U.S. patent application number 16/480073 was filed with the patent office on 2019-12-05 for co-rotating scroll compressor and method of assembling the same.
This patent application is currently assigned to MITSUBISHI HEAVY INDUSTRIES, LTD.. The applicant listed for this patent is MITSUBISHI HEAVY INDUSTRIES, LTD.. Invention is credited to Hirofumi HIRATA, Takahide ITO, Takuma YAMASHITA.
Application Number | 20190368492 16/480073 |
Document ID | / |
Family ID | 62979342 |
Filed Date | 2019-12-05 |
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United States Patent
Application |
20190368492 |
Kind Code |
A1 |
HIRATA; Hirofumi ; et
al. |
December 5, 2019 |
CO-ROTATING SCROLL COMPRESSOR AND METHOD OF ASSEMBLING THE SAME
Abstract
A scroll accommodation portion (3b) for accommodating a
driving-side scroll member (70), a driven-side scroll member (90),
a first support member (33), and a second support member (35) is
provided. The first driving-side scroll portion (71) and a second
driving-side scroll portion (72) are fixed by a wall fixing bolt
(31). The driven-side scroll member (90) and the second support
member (35) are fixed by a second support fixing bolt (36). The
scroll accommodation portion (3b) is formed with an access hole
(3b1) accessible to the wall fixing bolt (31) and the second
support fixing bolt (36).
Inventors: |
HIRATA; Hirofumi; (Tokyo,
JP) ; ITO; Takahide; (Tokyo, JP) ; YAMASHITA;
Takuma; (Tokyo, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
Tokyo |
|
JP |
|
|
Assignee: |
MITSUBISHI HEAVY INDUSTRIES,
LTD.
Tokyo
JP
|
Family ID: |
62979342 |
Appl. No.: |
16/480073 |
Filed: |
January 25, 2018 |
PCT Filed: |
January 25, 2018 |
PCT NO: |
PCT/JP2018/002294 |
371 Date: |
July 23, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04C 18/023 20130101;
F04C 23/008 20130101; F04C 2240/805 20130101; F04C 2240/40
20130101; F04C 27/009 20130101; F04C 2240/50 20130101; F04C
2230/604 20130101; F04C 29/02 20130101; F04C 18/0223 20130101 |
International
Class: |
F04C 29/02 20060101
F04C029/02; F04C 18/02 20060101 F04C018/02; F04C 23/00 20060101
F04C023/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 27, 2017 |
JP |
2017-013324 |
Claims
1.-7. (canceled)
8. A co-rotating scroll compressor, comprising: a driving-side
scroll member that is rotationally driven by a driving unit and
includes a spiral driving-side wall disposed on a driving-side end
plate; a driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, wherein the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, wherein the co-rotating
scroll compressor includes a first support member and a second
support member, the first support member being disposed with the
first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall to rotate with the
first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, wherein a hole
accessible to the wall fixing part and/or the first support fixing
part and/or the second support fixing part is formed in the
housing.
9. The co-rotating scroll compressor according to claim 8,
comprising a sealing body sealing the hole.
10. The co-rotating scroll compressor according to claim 8, wherein
the co-rotating scroll compressor is provided with two or more
holes.
11. The co-rotating scroll compressor according to claim 8, wherein
the hole is formed at an end part opposite to an openable end part
of the housing.
12. The co-rotating scroll compressor according to claim 8, wherein
the hole is accessible to the wall fixing part fixed to a radially
outwardly projecting flange portion of the first driving-side wall
and the second driving-side wall and/or the first support fixing
part fixed to the front end on the outer peripheral side of the
first driven-side wall and/or the second support fixing part fixed
to the front end on the outer peripheral side of the second
driven-side wall.
13. A method of assembling a co-rotating scroll compressor, the
co-rotating scroll compressor comprising: a driving-side scroll
member that is rotationally driven by a driving unit and includes a
spiral driving-side wall disposed on a driving-side end plate; a
driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, wherein the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, wherein the co-rotating
scroll compressor includes a first support member and a second
support member, the first support member being disposed with the
first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall to rotate with the
first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, wherein the first
support fixing part or the second support fixing part is fixed,
after the first support member or the second support member is
assembled to the housing, using a hole accessible to the first
support fixing part or the second support fixing part formed in the
housing.
14. A method of assembling a co-rotating scroll compressor, the
co-rotating scroll compressor comprising: a driving-side scroll
member that is rotationally driven by a driving unit and includes a
spiral driving-side wall disposed on a driving-side end plate; a
driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, wherein the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, wherein the co-rotating
scroll compressor includes a first support member and a second
support member, the first support member being disposed with the
first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall to rotate with the
first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, wherein the wall
fixing part is fixed, after the first driving-side scroll portion
and the second driving-side scroll portion are assembled to the
housing, using a hole accessible to the wall fixing part formed in
the housing.
15. A method of assembling a co-rotating scroll compressor, the
co-rotating scroll compressor comprising: a driving-side scroll
member that is rotationally driven by a driving unit and includes a
spiral driving-side wall disposed on a driving-side end plate; a
driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, wherein the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, wherein the co-rotating
scroll compressor includes a first support member and a second
support member, the first support member being disposed with the
first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall to rotate with the
first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, wherein after the
first driving-side scroll portion and the second driving-side
scroll portion, the first support member and the second support
member are integrated to form an assembly, the assembly is
assembled to the housing.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a co-rotating scroll
compressor and a method of assembling the same.
BACKGROUND ART
[0002] A co-rotating scroll compressor has been known (see PTL 1).
The co-rotating scroll compressor includes a driving-side scroll
and a driven-side scroll that rotates in synchronization with the
driving-side scroll, and causes a drive shaft causing the
driving-side scroll to rotate and a driven-shaft supporting
rotation of the driven-side scroll to rotate in the same direction
at the same angular velocity while the driven-shaft is offset by a
revolving radius from the drive shaft.
CITATION LIST
Patent Literature
[0003] [PTL 1] the Publication of Japanese Patent No. 5443132
SUMMARY OF INVENTION
Technical Problem
[0004] In the co-rotating type scroll compressor, each rotation
around different rotation axes of the driving-side scroll member
and the driven-side scroll member makes it difficult to assemble
the two scroll members into the housing.
[0005] The present disclosure is made in consideration of such
circumstances, and an object of the present disclosure is to
provide a co-rotating scroll compressor that facilitates assembly
work and an assembly method thereof.
Solution to Problem
[0006] To solve the above-described issues, a co-rotating scroll
compressor and an assembly method thereof according to the present
disclosure adopt the following solutions.
[0007] A co-rotating scroll compressor according to an aspect of
the present disclosure includes: a driving-side scroll member that
is rotationally driven by a driving unit and includes a spiral
driving-side wall disposed on a driving-side end plate; a
driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, in which the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, in which the
co-rotating scroll compressor includes a first support member and a
second support member, the first support member being disposed with
the first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall to rotate with the
first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, in which a hole
accessible to the wall fixing part and/or the first support fixing
part and/or the second support fixing part is formed in the
housing.
[0008] The driving-side wall disposed on the end plate of the
driving-side scroll member is engaged with the corresponding
driven-side wall of the driven-side scroll member. The driving-side
scroll member is rotationally driven by the driving unit, and the
driving force transmitted to the driving-side scroll member is
transmitted to the driven-side scroll member through the
synchronous driving mechanism. As a result, the driven-side scroll
member rotates as well as performs rotational movement in the same
direction at the same angular velocity with respect to the
driving-side scroll member. As described above, the co-rotating
scroll compressor in which both of the driving-side scroll member
and the driven-side scroll member rotate is provided.
[0009] The housing is provided with a hole accessible to the wall
fixing part and/or the first support fixing part and/or the second
support fixing part. A tool can be inserted through this hole to
access the wall fixing part and/or the first support fixing part
and/or the second support fixing part. As a result, after the
driving-side scroll member and the support member are incorporated
into the housing, access can be performed from the outside of the
housing, and work can be performed, which facilitates assembly
work.
[0010] The hole may also be used for access to the reference pin or
positioning pin of each component incorporated in the housing, or
for passing a stopper to prevent rotation of the scroll member
during assembly, as another application.
[0011] Further, the co-rotating scroll compressor according to one
aspect of the present disclosure includes a sealing body that seals
the hole.
[0012] The sealing body is attached to the hole and sealed after
the work is performed using the hole. Therefore, the housing can be
closely sealed.
[0013] Further, in the co-rotating scroll compressor according to
one aspect of the present disclosure, a plurality of the holes are
provided.
[0014] Multiple holes are formed. This enables various works to be
performed at desired positions.
[0015] Further, in the co-rotating scroll compressor according to
one aspect of the present disclosure, the hole is provided at end
part opposite to the end part that is openable of the housing.
[0016] When the end part of the housing is openable, each component
may be inserted into the housing from the openable end part during
assembly. However, it may be necessary to access each component
after each component is inserted into the housing and assembled in
the housing. Therefore, providing a hole at the end part opposite
to the openable end part enables access to each component assembled
in the housing.
[0017] Further, a method of assembling a co-rotating scroll
compressor according to an aspect of the present disclosure, the
co-rotating scroll compressor including: a driving-side scroll
member that is rotationally driven by a driving unit and includes a
spiral driving-side wall disposed on a driving-side end plate; a
driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, in which the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, in which the
co-rotating scroll compressor includes a first support member and a
second support member, the first support member being disposed with
the first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall to rotate with the
first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, in which the first
support fixing part or the second support fixing part is fixed,
after the first support member or the second support member is
assembled to the housing, using a hole accessible to the first
support fixing part or the second support fixing part formed in the
housing.
[0018] The housing is formed with the hole that allows access to
the first support fixing part or the second support fixing part. A
tool can be inserted through the hole accessible to the first
support fixing part or the second support fixing part. Thus, after
the support member is incorporated into the housing, access can be
performed from the outside of the housing, and the complexity of
the assembly process can be reduced.
[0019] Further, a method of assembling a co-rotating scroll
compressor according to an aspect of the present disclosure, the
co-rotating scroll compressor including: a driving-side scroll
member that is rotationally driven by a driving unit and includes a
spiral driving-side wall disposed on a driving-side end plate; a
driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, in which the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, in which the
co-rotating scroll compressor includes a first support member and a
second support member, the first support member being disposed with
the first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall body to rotate with
the first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, in which the wall
fixing part is fixed, after the first driving-side scroll portion
or the second driving-side scroll portion are assembled to the
housing, using a hole accessible to the wall fixing part formed in
the housing.
[0020] The housing is formed with the hole accessible to the wall
fixing part. A tool can be inserted through this hole to access to
the wall fixing part. As a result, after the driving-side scroll
member is incorporated into the housing, access can be performed
from the outside of the housing, and the complexity of the assembly
process can be reduced.
[0021] In addition, an assembling method of the co-rotating scroll
compressor as a reference example, the co-rotating scroll
compressor including: a driving-side scroll member that is
rotationally driven by a driving unit and includes a spiral
driving-side wall disposed on a driving-side end plate; a
driven-side scroll member that includes a driven-side wall
corresponding to the driving-side wall, the driven-side wall being
disposed on a driven-side end plate and engaging with the
driving-side wall to form a compression space; a synchronous
driving mechanism that transmits driving force from the
driving-side scroll member to the driven-side scroll member to
cause the driving-side scroll member and the driven-side scroll
member to perform rotational movement in a same direction at a same
angular velocity; and a housing accommodating the driving-side
scroll member, the driven-side scroll member and the synchronous
driving mechanism, in which the driving-side scroll member includes
a first driving-side scroll portion, a second driving-side scroll
portion, and a wall fixing part, the first driving-side scroll
portion including a first driving-side end plate and a first
driving-side wall and being driven by the driving unit, the second
driving-side scroll portion including a second driving-side end
plate and a second driving-side wall, and the wall fixing part
performing fixing while a front end in an axial direction of the
first driving-side wall and a front end in an axial direction of
the second driving-side wall face each other, and the driven-side
scroll member includes a first driven-side wall and a second
driven-side wall, the first driven-side wall being provided on one
side surface of the driven-side end plate and engaging with the
first driving-side wall, and the second driven-side wall being
provided on another side surface of the driven-side end plate and
engaging with the second driving-side wall, in which the
co-rotating scroll compressor includes a first support member and a
second support member, the first support member being disposed with
the first driving-side end plate interposed therebetween and being
fixed by a first support fixing part to the front end side in the
axial direction of the first driven-side wall to rotate with the
first driven-side wall, and the second support member being
disposed with the second driving-side end plate interposed
therebetween and being fixed by a second support fixing part to the
front end side in the axial direction of the second-driven side
wall to rotate with the second driven-side wall, in which after the
first driving-side scroll portion and the second driving-side
scroll portion, the first support member and the second support
member are integrated to form an assembly, the assembly is
assembled to the housing.
[0022] Before being inserted into the housing, the first
driving-side scroll portion and the second driving-side scroll
portion, the first support member and the second support member are
integrated to form an assembly. Thus, centering of both scroll
members can be performed before being incorporated into the
housing, so that both scroll members can be accurately assembled.
In addition, the hole and the sealing body described above become
unnecessary, and the number of parts can be reduced.
Advantageous Effects of Invention
[0023] A hole is provided in the housing to allow access to the
driving-side scroll member and the support member. This can
facilitate assembly.
BRIEF DESCRIPTION OF DRAWINGS
[0024] FIG. 1 is a longitudinal sectional view showing a
co-rotating scroll compressor according to an embodiment of the
present disclosure.
[0025] FIG. 2A is a longitudinal sectional view showing a first
process of an assembly of the co-rotating scroll compressor of FIG.
1.
[0026] FIG. 2B is a longitudinal sectional view showing a second
process of the assembly of the co-rotating scroll compressor of
FIG. 1.
[0027] FIG. 2C is a longitudinal sectional view showing a third
process of the assembly of the co-rotating scroll compressor of
FIG. 1.
[0028] FIG. 2D is a longitudinal sectional view showing a fourth
process of the assembly of the co-rotating scroll compressor of
FIG. 1.
[0029] FIG. 2E is a longitudinal sectional view showing a fifth
process of the assembly of the co-rotating scroll compressor of
FIG. 1.
[0030] FIG. 3A is a longitudinal cross-sectional view showing a
first process of assembly of the co-rotating scroll compressor
according to the reference embodiment.
[0031] FIG. 3B is a longitudinal cross-sectional view showing a
second process of the assembly of the co-rotating scroll compressor
according to the reference embodiment.
DESCRIPTION OF EMBODIMENTS
[0032] An embodiment of the present disclosure is described below
with reference to FIG. 1 and FIG. 2.
[0033] FIG. 1 illustrates a co-rotating scroll compressor (scroll
compressor) 1. The co-rotating scroll compressor 1 can be used as,
for example, a supercharger that compresses combustion air (fluid)
to be supplied to an internal combustion engine such as a vehicle
engine.
[0034] The co-rotating scroll compressor 1 includes a housing 3, a
motor (driving unit) 5 accommodated on one end side in the housing
3, and a driving-side scroll member 70 and a driven-side scroll
member 90 that are accommodated on the other end side in the
housing 3.
[0035] The housing 3 has a substantially cylindrical shape, and
includes a motor accommodation portion 3a that accommodates the
motor 5, and a scroll accommodation portion 3b that accommodates
the scroll members 70 and 90.
[0036] A cooling fin 3c to cool the motor 5 is provided on an outer
periphery of the motor accommodation portion 3a. A discharge
opening 3d from which compressed air (working fluid) is discharged
is provided at an end part of the scroll accommodation portion 3b.
Note that, although not illustrated in FIG. 1, the housing 3
includes an air suction opening from which air (working fluid) is
sucked in. Further, an access hole 3b1 that is a through hole is
formed at an end part of the scroll accommodation portion 3b. The
plurality of access holes 3b1 are provided, and are formed in
accordance with the position of the object to be accessed. The
number of access holes 3b1 may be one.
[0037] A sealing bolt (sealing body) 40 for sealing is provided in
the access hole 3b1. The sealing bolt 40 is attached after the
assembly is completed. In addition, when it is not necessary to
seal the inside of the housing 3, the sealing bolt 40 may be
omitted. In this case, the through hole by the access hole 3b1
remains open.
[0038] The motor 5 is driven by being supplied with power from an
unillustrated power supply source. Rotation of the motor 5 is
controlled by an instruction from an unillustrated control unit. A
stator 5a of the motor 5 is fixed to an inner periphery of the
housing 3. A rotor 5b of the motor 5 rotates around a driving-side
rotation axis CL1. A driving shaft 6 that extends on the
driving-side rotation axis CL1 is connected to the rotor 5b. The
driving shaft 6 is connected to a first driving-side shaft portion
7c of the driving-side scroll member 70.
[0039] The driving-side scroll member 70 includes a first
driving-side scroll portion 71 on the motor 5 side, and a second
driving-side scroll portion 72 on the discharge opening 3d
side.
[0040] The first driving-side scroll portion 71 includes a first
driving-side end plate 71a and first driving-side walls 71b.
[0041] The first driving-side end plate 71a is connected to the
first driving-side shaft portion 7c connected to the driving shaft
6, and extends in a direction orthogonal to the driving-side
rotation axis CL1. The first driving-side shaft portion 7c is
provided so as to be rotatable with respect to the housing 3
through a first driving-side bearing 11 that is a ball bearing.
[0042] The first driving-side end plate 71a has a substantially
disc shape in a planar view. The plurality of first driving-side
walls 71b formed in a spiral shape are provided on the first
driving-side end plate 71a. The first driving-side walls 71b are
disposed at an equal interval around the driving-side rotation axis
CL1.
[0043] The second driving-side scroll portion 72 includes a second
driving-side end plate 72a and a second driving-side walls 72b. The
plurality of second driving-side walls 72b each formed in a spiral
shape are provided similarly to the above-described first
driving-side walls 71b.
[0044] A second driving-side shaft portion 72c in a cylindrical
shape that extends in the driving-side rotation axis CL1 is
connected to the second driving-side end plate 72a. The second
driving-side shaft portion 72c is provided so as to be rotatable
with respect to the housing 3 through a second driving-side bearing
14 that is a ball bearing. The second driving-side end plate 72a
includes a discharge port 72d extending along the driving-side
rotation axis CL1.
[0045] Two seal members 16 are provided on a front end side (left
side in FIG. 1) of the second driving-side shaft portion 72c
relative to the second driving-side bearing 14, between the second
driving-side shaft portion 72c and the housing 3. The two seal
members 16 and the second driving-side bearing 14 are disposed to
include a predetermined interval in the driving side rotation axis
CL1 direction. For example, a lubricant that is a grease as a
semi-solid lubricant is sealed between the two seal members 16.
Note that only one seal member 16 may be provided. In this case,
the lubricant is sealed between the seal member 16 and the second
driving-side bearing 14.
[0046] The first driving-side scroll portion 71 and the second
driving-side scroll portion 72 are fixed while the front ends (free
ends) of the walls 71b and 72b face each other. The first
driving-side scroll portion 71 and the second driving-side scroll
portion 72 are fixed by wall fixing bolts (wall fixing parts) 31
that are fastened to flange portions 73 provided at a plurality of
positions in the circumferential direction. The flange portions 73
are provided so as to protrude outward in the radial direction. The
wall fixing bolt 31 is in a position accessible by a tool from the
access hole 3b1 formed in the scroll accommodation portion 3b.
[0047] The driven-side scroll member 90 includes a driven-side end
plate 90a that is located at a substantially center in the axial
direction (horizontal direction in figure). The through hole 90h is
provided at a center of the driven-side end plate 90a, and causes
the compressed air to flow toward the discharge port 72d.
[0048] A first driven-side walls 91b are provided on one side
surface of the driven-side end plate 90a, and a second driven-side
walls 92b are provided on the other side surface of the driven-side
end plate 90a. The first driven-side walls 91b provided on the
motor 5 side from the driven-side end plate 90a engage with the
first driving-side walls 71b of the first driving-side scroll
portion 71. The second driven-side walls 92b provided on the
discharge opening 3d side from the driven-side end plate 90a engage
with the second driving-side walls 72b of the second driving-side
scroll portion 72.
[0049] A first support member 33 and a second support member 35 are
provided at both ends of the driven-side scroll member 90 in the
axial direction (horizontal direction in the figure). The first
support member 33 is disposed on the motor 5 side, and the second
support member 35 is disposed on the discharge opening 3d side.
[0050] The first support member 33 is fixed to the front ends (free
ends) on the outer peripheral side of the first driven-side walls
91b by a first support fixing bolt (first support fixing part) 34,
and a second support member 35 is fixed to the front ends (free
ends) on the outer peripheral side of the second driven-side walls
92b by a second support fixing bolt (second support fixing part)
36. The second support fixing bolt 36 is in a position accessible
by a tool from the access hole 3b1 formed in the scroll housing
3b.
[0051] A shaft portion 33a is provided on the center axis side of
the first support member 33, and the shaft portion 33a is fixed to
the housing 3 through a first support member bearing 37. A shaft
portion 35a is provided on the center axis side of the second
support member 35, and the shaft portion 35a is fixed to the
housing 3 through a second support member bearing 38. As a result,
the driven-side scroll member 90 rotates around a driven-side
center axis CL2 through the support members 33 and 35.
[0052] A pin-ring mechanism (synchronous driving mechanism) 15 is
provided between the first support member 33 and the first
driving-side end plate 71a. More specifically, a rolling bearing
(ring) is provided in the first driving-side end plate 71a, and a
pin member 15b is provided on the first support member 33. The
pin-ring mechanism 15 transmits the driving force from the
driving-side scroll member 70 to the driven-side scroll member 90,
and causes the scroll members 70 and 90 to perform rotational
movement in the same direction at the same angular velocity.
[0053] The co-rotating scroll compressor 1 including the
above-described configuration operates in the following manner.
[0054] When the driving shaft 6 rotates around the driving-side
rotation axis CL1 by the motor 5, the first driving-side shaft
portion 7c connected to the driving shaft 6 also rotates, and the
driving-side scroll member 70 accordingly rotates around the
driving-side rotation axis CL1. When the driving-side scroll member
70 rotates, the driving force is transmitted from the support
members 33 and 35 to the driven-side scroll member 90 through the
pin-ring mechanisms 15, and the driven-side scroll member 90
rotates around the driven-side rotation axis CL2. At this time,
when the pin members 15b of the pin-ring mechanisms 15 move while
being in contact with the inner periphery surface of the circular
hole, the both scroll members 70 and 90 perform rotational movement
at the same angular velocity in the same direction.
[0055] When the scroll members 70 and 90 perform oscillating
revolving movement, the air sucked through the air suction. opening
of the housing 3 is sucked in from the outer peripheral side of
each of the scroll members 70 and 90, and is taken into compression
chambers formed by the scroll members 70 and 90. Further,
compression is separately performed in compression chambers formed
by the first driving-side walls 71b and the first driven-side walls
91b and in compression chambers formed by the second driving-side
walls 72b and the second driven-side walls 92b. A volume of each of
the compression chambers is reduced as each of the compression
chambers moves toward the center, which compresses the air. The air
compressed by the first driving-side walls 71b and the first
driven-side walls 91b passes through the through hole 90h provided
in the driven-side end plate 90a, and is joined with the air
compressed by the second driving-side walls 72b and the second
driven-side walls 92b. The resultant air passes through the
discharge port 72d and is discharged to outside from the discharge
opening 3d of the housing 3. The discharged compressed air is
guided to an unillustrated internal combustion engine, and is used
as combustion air.
Assembly Method
[0056] Next, referring to FIGS. 2A to 2E, a method of assembling
the co-rotating scroll compressor 1 is described.
[0057] First, as shown in FIG. 2A, after the second driving-side
bearing 14 and the second support member bearing 38 are attached to
the scroll accommodation portion 3b, the second support member 35
is inserted from the open end side of the scroll accommodation
portion 3b and assembled. Specifically, the shaft portion 35a of
the second support member 35 is inserted into the inner periphery
of the inner ring of the second support member bearing 38. At this
time, the sealing bolt 40 (see FIG. 1) is not attached to the
access hole 3b1 formed in the scroll accommodation portion 3b.
[0058] Next, as shown in FIG. 2B, the second driving-side scroll
portion 72 is assembled. Specifically, the second driving-side
shaft portion 72c of the second driving-side scroll portion 72 is
inserted into the inner periphery of the inner ring of the second
driving-side bearing 14.
[0059] Then, as shown in FIG. 2C, the driven-side scroll member 90
is assembled. Specifically, after the front end of the second
driven-side wall 92b of the driven-side scroll member 90 and the
front end of the second support member 35 are butted, the
driven-side scroll member 90 and the second support member 35 are
fixed using the second support fixing bolt 36. This fixing work is
performed by inserting a tool from the access hole 3b1 and rotating
the second support fixing bolt 36 about its axis. When the second
support fixing bolt 36 is fixed at a plurality of positions, the
fixing work may be performed by rotating the driven-side scroll
member 90 and the second support member 35 by a predetermined angle
using the same access hole 3b1 or the fixing work may be performed
using a plurality of access holes 3b1 provided at corresponding
angular positions without the driven-side scroll member 90 and the
second support member 35 being rotated.
[0060] Then, as shown in FIG. 2D, the first driving-side scroll
portion 71 is assembled. Specifically, after the first driving-side
wall 71b is butted to the second driving-side wall 72b of the
second driving-side scroll portion 72, the first driving-side
scroll portion 71 and the second driving-side scroll portion 72 are
fixed using the wall fixing bolt 31. This fixing work is performed
by inserting a tool from the access hole 3b1 and rotating the wall
fixing bolt 31 about its axis. When the wall fixing bolt 31 is
fixed at a plurality of positions, the fixing work may be performed
by rotating the driving-side scroll member 70 by a predetermined
angle using the same access hole 3b1, or the fixing work may be
performed using a plurality of access holes 3b1 provided at
corresponding angular positions without the driving-side scroll
member 70 being rotated.
[0061] Then, as shown in FIG. 2E, the first support member 33 is
assembled. Specifically, after the front end of the first
driven-side wall 91b of the driven-side scroll member 90 and the
front end of the first support member 33 are abutted, the
driven-side scroll member 90 and the first support member 33 are
fixed using the first support fixing bolt 34. This fixing work is
performed by accessing from the open end (right side end part in
the same Figure) side of the scroll accommodation portion 3b.
[0062] Then, the sealing bolt 40 is fixed to the access hole 3b1.
Thereby, the inside of the housing 3 can be closely sealed.
[0063] The fixing work of the second support fixing bolt 36
described with reference to FIG. 2C may be performed after the
driven-side scroll member 90 is temporarily fixed to the second
support member 35, and may be performed after the process of FIG.
2D or FIG. 2E, for example.
[0064] Further, the fixing work of the wall fixing bolt 31
described with reference to FIG. 2D may be performed by accessing
from the open end side of the scroll accommodation portion 3b
without using the access hole 3b1.
[0065] The present embodiment achieves the following action
effects.
[0066] A tool can be inserted through the access hole 3b1 to access
the second support fixing bolt 36 and the wall fixing bolt 31. As a
result, after the second support member 35 and the driving-side
scroll member 70 are incorporated into the scroll accommodation
portion 3b, access can be performed from the outside of the housing
3, and work can be performed, which facilitates assembly work.
[0067] After working using the access hole 3b1, the sealing bolt 40
is attached to the access hole 3b1 and sealed. This allows the
housing 3 to be closely sealed.
[0068] The access hole 3b1 is provided at the end part opposite to
the end part openable of the scroll accommodation portion 3b.
Therefore, the second support member 35 and the driving-side scroll
member 70 can be accessed after being assembled in the scroll
accommodation portion 3b.
[0069] In the embodiment described above, although the co-rotating
scroll compressor is used as the supercharger, the present
disclosure is not limited to this, and it is possible to widely use
it as long as it compresses fluid. It can also be used, for
example, as a refrigerant compressor used in air conditioning
machines. Moreover, it is also possible to apply the scroll
compressor 1 of the invention to the air control apparatus using
air force as a brake system for rail vehicles.
[0070] Also, the access hole 3b1 can also be used for accessing the
reference pins and positioning pins of each component incorporated
in the scroll accommodation portion 3b or passing a stopper to
prevent the scroll members 70 and 90 from rotating during assembly
as another application.
Reference Embodiment
[0071] Reference embodiments are shown in FIGS. 3A and 3B.
[0072] If the scroll accommodation portion 3b is not provided with
the access hole 3b1 (see FIG. 1), the assembly is performed as
follows. That is, as shown in FIG. 3A and FIG. 3B, the first
driving-side scroll portion 71 and the second driving-side scroll
portion 72 are fixed by the wall fixing bolt 31, and the first
support member 33 and the driven-side scroll member 90 are fixed by
the first support fixing bolt 34, and, the second support member 35
and the driven-side scroll member 90 are fixed by the second
support fixing bolt 36, then these are integrated to form a
cartridge (assembly). Thereafter, the cartridge is inserted from
the open end side of the scroll accommodation portion 3b and
assembled.
[0073] The cartridge is formed before being inserted into the
scroll accommodation portion 3b, which allows both scroll members
70 and 90 to be centered before the cartridge is inserted into the
scroll accommodation portion 3b. Therefore, the both scroll members
70 and 90 can be accurately assembled. Further, the access hole 3b1
and the sealing bolt 40 described above become unnecessary, and the
number of parts can be reduced.
REFERENCE SIGNS LIST
[0074] 1 Co-rotating scroll compressor (scroll compressor) [0075] 3
Housing [0076] 3a Motor accommodation portion [0077] 3b Scroll
accommodation portion (housing) [0078] 3b1 Access hole [0079] 3c
Cooling fins [0080] 3d Discharge opening [0081] 5 Motor (driving
unit) [0082] 5a Stator [0083] 5b Rotor [0084] 6 Driving shaft
[0085] 7c First driving-side shaft portion [0086] 11 First
driving-side bearing [0087] 14 Second driving-side bearing [0088]
15 Pin-ring mechanism (synchronous driving mechanism) [0089] 15b
Pin member [0090] 16 Seal member [0091] 31 Wall fixing bolt (wall
fixing part) [0092] 33 First support member [0093] 33a Shaft
portion [0094] 34 First support fixing bolt (first support fixing
portion) [0095] 35 Second support member [0096] 35a Shaft portion
[0097] 36 Second support fixing bolt (second support fixing
portion) [0098] 37 First support member bearing [0099] 38 Second
support member bearing [0100] 40 Sealing bolt (sealed body) [0101]
70 Driving-side scroll member [0102] 71 First driving-side scroll
portion [0103] 71a First driving-side end plate [0104] 71b First
driving-side wall [0105] 72 Second driving-side scroll portion
[0106] 72a Second driving-side end plate [0107] 72b Second
driving-side wall [0108] 72c Second driving-side shaft portion
[0109] 72d Discharge port [0110] 73 Flange portion [0111] 90
Driven-side scroll member [0112] 90a Driven-side end plate [0113]
90h Through hole [0114] 91b First driven-side wall [0115] 92b
Second driven-side wall [0116] CL1 Driving-side rotation axis
[0117] CL2 Driven-side rotation axis
* * * * *