U.S. patent application number 11/731199 was filed with the patent office on 2007-11-15 for hermetic compressor.
This patent application is currently assigned to SAMSUNG GWANGJU ELECTRONICS CO., LTD.. Invention is credited to Seung Park.
Application Number | 20070264137 11/731199 |
Document ID | / |
Family ID | 38685329 |
Filed Date | 2007-11-15 |
United States Patent
Application |
20070264137 |
Kind Code |
A1 |
Park; Seung |
November 15, 2007 |
Hermetic compressor
Abstract
Disclosed is a hermetic compressor capable of reducing the
number of parts and increasing working efficiency in the assembling
process. The hermetic compressor includes a cylinder block having a
compression chamber, and an assembly having a main body that
includes an intake hole through which a refrigerant is drawn into
the compression chamber and an exhaust hole through which the
refrigerant is exhausted from the compression chamber and is
coupled to one side of the cylinder block, and a cover that is
coupled with the main body and includes a first resonant chamber
communicating with the intake hole and a second resonant chamber
communicating with the exhaust hole.
Inventors: |
Park; Seung; (Jeonnam,
KR) |
Correspondence
Address: |
Charles N.J. Ruggiero, Esq.;Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
10th Floor, One Landmark Square
Stamford
CT
06901-2682
US
|
Assignee: |
SAMSUNG GWANGJU ELECTRONICS CO.,
LTD.
|
Family ID: |
38685329 |
Appl. No.: |
11/731199 |
Filed: |
March 30, 2007 |
Current U.S.
Class: |
417/313 |
Current CPC
Class: |
F04B 39/122 20130101;
F04B 39/125 20130101; F04B 39/0061 20130101; F04B 39/0066 20130101;
F04B 39/14 20130101 |
Class at
Publication: |
417/313 |
International
Class: |
F04B 39/00 20060101
F04B039/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 10, 2006 |
KR |
2006-42120 |
Claims
1. A hermetic compressor comprising: a cylinder block having a
compression chamber; and an assembly having a main body that
includes an intake hole through which a refrigerant is drawn into
the compression chamber and an exhaust hole through which the
refrigerant is exhausted from the compression chamber and is
coupled to one side of the cylinder block, and a cover that is
coupled with the main body and includes a first resonant chamber
communicating with the intake hole and a second resonant chamber
communicating with the exhaust hole.
2. The hermetic compressor as claimed in claim 1, wherein: the main
body further includes a flat part having the intake and exhaust
holes, a first recess recessed from the flat part at a
predetermined depth and forming part of the first resonant chamber,
and a second recess recessed from the flat part at a predetermined
depth and forming part of the second resonant chamber; and the
cover includes a third recess having an intake chamber
communicating the intake hole and forming the first resonant
chamber together with the first recess, and a fourth recess having
an exhaust chamber communicating the exhaust hole and forming the
second resonant chamber together with the second recess.
3. The hermetic compressor as claimed in claim 2, wherein the cover
further includes a first connecting channel connecting the intake
chamber with the first resonant chamber, and a second connecting
channel connecting the exhaust chamber with the second resonant
chamber.
4. The hermetic compressor as claimed in claim 2, wherein the cover
further includes a partition that partitions between the intake
chamber and exhaust chamber and between the third recess and the
fourth recess.
5. The hermetic compressor as claimed in claim 1, wherein the first
and second resonant chambers are disposed on the same side in
relation to the axis of the compression chamber.
6. The hermetic compressor as claimed in claim 1, wherein the main
body and the cover are coupled to each other by brazing.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of Korean Patent
Application No. 2006-42120, filed on May 10, 2006, in the Korean
Intellectual Property Office, the disclosure of which is
incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates generally to a hermetic
compressor, and more particularly to a hermetic compressor in which
an intake muffler and an exhaust muffler are integrally formed with
a cylinder head.
[0004] 2. Description of the Prior Art
[0005] A hermetic compressor forms a part of refrigerating cycle
used in a refrigerator, an air conditioner, or the like. This
hermetic compressor includes a closed casing forming an external
appearance, a compressing unit compressing a refrigerant in the
closed casing, and a driving unit providing the compressing unit
with driving force.
[0006] Among them, the compressing unit includes a cylinder block
that forms a compression chamber, a piston that compresses the
refrigerant while reciprocating in the compression chamber, a
cylinder head that is coupled to one side of the cylinder block to
hermetically close the compression chamber and has an intake
chamber and an exhaust chamber partitioned each other, and a valve
unit that is interposed between the cylinder block and the cylinder
head and regulates a flow of the refrigerant that is drawn from the
intake chamber into the compression chamber or is exhausted from
the compression chamber to the exhaust chamber.
[0007] Under this configuration, when the driving unit is driven,
the piston reciprocates in the compression chamber. Thereby, the
refrigerant is introduced into the intake chamber of the cylinder
head from the outside of the closed casing through an intake pipe,
is fed to the compression chamber, and is compressed in the
compression chamber. The refrigerant compressed in the compression
chamber is exhausted to the exhaust chamber of the cylinder head,
and then the outside of the closed casing through an exhaust
pipe.
[0008] The refrigerant that is drawn into and exhausted from the
compression chamber causes vibration and noise due to pulsation
cased by intermittent intake and exhaust operation thereof. In
order to reduce these vibration and noise, the cylinder head is
coupled with an intake muffler communicating with the intake
chamber as well as an exhaust muffler communicating with the
exhaust chamber.
[0009] However, in the conventional hermetic compressor, the intake
muffler and the exhaust muffler are fabricated independently of the
cylinder head, and communicate with the intake chamber and the
exhaust chamber through connecting pipes, respectively.
[0010] In this manner, because the intake muffler and the exhaust
muffler are fabricated independently of the cylinder head, the
separate parts such as connecting pipes are required, so that they
requires a lot of working procedures for fabrication.
[0011] Further, the intake muffler and the exhaust muffler are
assembled with the cylinder head by means of a lot of assembling
procedures, and thus working efficiency is reduced.
SUMMARY OF THE INVENTION
[0012] Accordingly, the present invention has been made to solve
above-mentioned problems occurring in the prior art, and an object
of the present invention is to provide a hermetic compressor, in
which intake and exhaust mufflers are integrally fabricated with a
cylinder head, thereby reducing the number of parts, increasing the
working efficiency in the assembling process, and ultimately saving
the cost of production.
[0013] In order to accomplish this object, according to an aspect
of the present invention, there is provided a hermetic compressor,
which includes a cylinder block having a compression chamber, and
an assembly having a main body that includes an intake hole through
which a refrigerant is drawn into the compression chamber and an
exhaust hole through which the refrigerant is exhausted from the
compression chamber and is coupled to one side of the cylinder
block, and a cover that is coupled with the main body and includes
a first resonant chamber communicating with the intake hole and a
second resonant chamber communicating with the exhaust hole.
[0014] Here, the main body may further include a flat part having
the intake and exhaust holes, a first recess recessed from the flat
part at a predetermined depth and forming part of the first
resonant chamber, and a second recess recessed from the flat part
at a predetermined depth and forming part of the second resonant
chamber. The cover may include a third recess having an intake
chamber communicating the intake hole and forming the first
resonant chamber together with the first recess, and a fourth
recess having an exhaust chamber communicating the exhaust hole and
forming the second resonant chamber together with the second
recess.
[0015] Further, the cover may further include a first connecting
channel connecting the intake chamber with the first resonant
chamber, and a second connecting channel connecting the exhaust
chamber with the second resonant chamber.
[0016] Furthermore, the cover may further include a partition that
partitions between the intake chamber and exhaust chamber and
between the third recess and the fourth recess.
[0017] Further, the first and second resonant chambers may be
disposed on the same side in relation to the axis of the
compression chamber.
[0018] In addition, the main body and the cover may be coupled to
each other by brazing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and other objects, features and advantages of the
present invention will be more apparent from the following detailed
description taken in conjunction with the accompanying drawings, in
which:
[0020] FIG. 1 is a sectional view illustrating a hermetic
compressor according to an embodiment of the present invention;
[0021] FIG. 2 is an exploded perspective view illustrating the
hermetic compressor of FIG. 1; and
[0022] FIG. 3 is a rear perspective view illustrating the cover of
the assembly of FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] Hereinafter, exemplary embodiments of the present invention
will be described with reference to the accompanying drawings.
[0024] As illustrated in FIG. 1, a hermetic compressor according to
one embodiment of the present invention includes a closed casing 1
formed by the connection of upper and lower casings 1a and 1b, a
compressing unit 10 compressing a refrigerant in the closed casing,
and a driving unit 20 providing the compressing unit with driving
force. The closed casing 1 is provided, at one side thereof, with
an intake pipe 2 guiding the refrigerant to the inside thereof, and
an exhaust pipe 3 discharging the refrigerant compressed by the
compressing unit 10 to the outside thereof.
[0025] Among them, the compressing unit 10 includes a cylinder
block 11 that is integrally formed with a frame 15 to thereby form
a compression chamber 11a compressing the refrigerant, a piston 12
that reciprocates in the compression chamber 11a to compress the
refrigerant, a cylinder head assembly 13 that is coupled to one
side of the cylinder block 11 to hermetically close the compression
chamber 11a and has an intake chamber 13a and an exhaust chamber
13b partitioned each other, and a valve unit 30 that is interposed
between the cylinder block 11 and the cylinder head assembly 13 and
regulates a flow of the refrigerant that is drawn from the intake
chamber 13a into the compression chamber 11a or is exhausted from
the compression chamber 11a to the exhaust chamber 13b.
[0026] The driving unit 20 functions to provide a driving force to
allow the piston 12 to reciprocate in the compression chamber 11a.
The driving unit 20 includes a stator 21 fixed in the closed casing
1, and a rotor 22 fitted in the stator 21 at an interval so as to
interact electro-magnetically with the stator 21. The rotor 22 is
provided with a rotating shaft 23 at the center thereof, thereby
rotating together with the rotating shaft 23. The rotating shaft 23
is provided, at a lower portion thereof, with an eccentric portion
24 that is subject to eccentric rotation, and a connecting rod 25
that is rotatably coupled to the eccentric portion 24 at one end
thereof and the piston 12 at the other end thereof so as to convert
the eccentric movement into the linear movement.
[0027] When the hermetic compressor is powered, the rotating shaft
23 is rotated by electromagnetic interaction between the stator 21
and the rotor 22, and the piston 12 connected with the eccentric
portion 24 through the connecting rod 25 performs the linear
reciprocation in the compression chamber 11a. Thereby, the
refrigerant of the outside of the closed casing 1 is introduced
into the intake chamber 13a of the cylinder head assembly 13
through the intake pipe 2, is transferred to the compression
chamber 11a, and is compressed in the compression chamber 11a. The
refrigerator compressed in the compression chamber 11a is exhausted
to the exhaust chamber 13b of the cylinder head assembly 13 and
then to the outside of the closed casing 1 through the exhaust pipe
3.
[0028] Meanwhile, as illustrated in FIG. 2, the valve unit 30
includes an exhaust valve plate 35 that has an intake hole 31 and
an exhaust hole (now shown) through which the compression chamber.
11a of the cylinder block 11 communicate with the intake and
exhaust chambers 13a and 13b of the cylinder head assembly 13, an
intake valve plate 40 that is assembled to the exhaust valve plate
35 on the side of the cylinder block 11 and is provided with an
intake valve 41 opening/closing the intake hole 31, and a gasket 45
that is installed between the intake valve plate 40 and the
cylinder block 11 to prevent the refrigerant from leaking.
[0029] As illustrated in FIGS. 2 and 3, the exhaust valve plate 35
on the side of the cylinder head assembly 13 is assembled with an
exhaust valve assembly 32, which opens/closes the exhaust hole (not
shown).
[0030] Each of the gasket 45, the intake valve plate 40, and the
exhaust valve plate 35 is provided with bolt holes at an outer
circumference thereof. The valve unit 30 is installed between the
cylinder block 11 and the cylinder head assembly 13 by means of
fixing bolts 48, each of which passes through each bolt hole from
the outside of the cylinder head assembly 13 to be bolted to the
cylinder block 11.
[0031] The cylinder head assembly 13 installed on one side of the
cylinder block 11 includes a main body 50 coupled to the cylinder
block 11 by means of the fixing bolts 48, and a cover 60 coupled to
the main body 50, for example, by brazing.
[0032] The main body 50 includes a flat part 51 having a flat
surface, and first and second recesses 55 and 56 recessed toward
the cylinder block 11 from the flat part 51 at a predetermined
depth.
[0033] The flat part 51 is provided with bolt holes 52 that allow
the fixing bolts 48 fixing the cylinder head assembly 13 to the
cylinder block 11 to pass therethrough, and an exhaust hole 54 that
is provided at a position corresponding to the exhaust valve
assembly 32 that opens/closes an intake hole 53 provided at a
position corresponding to the intake hole 31 of the exhaust valve
plate 35 so as to allow the refrigerant to be drawn as well as the
exhaust hole (not shown) of the exhaust valve plate 35.
[0034] The first recess 55 and the second recess 56 are partitioned
by a first partition 57. The first recess 55 forms part of a first
resonant chamber 58 reducing noise of the drawn refrigerant,
whereas the second recess 56 forms part of a second resonant
chamber 59 reducing noise of the exhausted refrigerant.
[0035] At this time, the first and second resonant chambers 58 and
59 are disposed on the same side in relation to the axis of the
compression chamber 11a. In this manner, because the first and
second resonant chambers 58 and 59 are disposed on the same side,
the internal space of the closed casing 1 can be efficiently
used.
[0036] The cover 60 coupled to the main body 50 of the cylinder
head assembly 13 includes an edge 61 that is a part coupled to the
main body 50, for example, by brazing, and third and fourth
recesses 62 and 63 that are recessed opposite to the cylinder block
11 from the edge 61 at a predetermined depth.
[0037] The third recess 62 and the fourth recess 63 are partitioned
by a second partition 64. At this time, the second partition 64 is
in surface contact with the first partition 57 when the cover 60 is
coupled to the main body 50.
[0038] A part of the third recess 62 serves as the intake chamber
13a at a position corresponding to the intake hole 53 of the main
body 50, and the other part serves as the first resonant chamber 58
at a position corresponding to the first recess 55 of the main body
50. The intake chamber 13a and the first resonant chamber 58 are
connected by a first connecting channel 67.
[0039] A part of the fourth recess 63 serves as the exhaust chamber
13b at a position corresponding to the exhaust hole 54 of the main
body 50, and the other part serves as the second resonant chamber
59 at a position corresponding to the second recess 56 of the main
body 50. The exhaust chamber 13b and the second resonant chamber 59
are connected by a second connecting channel 68.
[0040] Meanwhile, the third recess 62 is provided with an intake
pipe connecting hole 62a connected with the intake pipe 2, and the
fourth recess 63 is provided with an exhaust pipe connecting hole
63a connected with the exhaust pipe 3.
[0041] The operation and effects of the hermetic compressor
according to the present invention will be described below.
[0042] When the hermetic compressor is driven, a refrigerant is
drawn into the first resonant chamber 58 through the intake pipe 2.
The refrigerant drawn into the first resonant chamber 58 flows into
the intake chamber 13a through the first connecting channel 67. The
refrigerant flowing into the intake chamber 13a is introduced into
the compression chamber 11a by the intake valve 41, and is
compressed by the piston 12.
[0043] The refrigerant compressed in the compression chamber 11a is
exhausted to the exhaust chamber 13b by opening/closing the exhaust
valve assembly 32. The refrigerant exhausted to the exhaust chamber
13b flows to the second resonant chamber 59 through the second
connecting channel 68. The refrigerant compressed in the
compression chamber 11a is expanded when flowing to the second
resonant chamber 59, so that noise or vibration caused by pulsation
is reduced.
[0044] As described above, the intake and exhaust chambers formed
in the cylinder head assembly and the resonant chambers formed in
the intake and exhaust mufflers can be simply formed only by one
assembly in which the main body is assembled with the cover.
[0045] As can be seen from the foregoing, the hermetic compressor
according to the present invention forms an assembly in which the
intake and exhaust mufflers are integrally fabricated with the
cylinder head assembly, so that the number of parts can be reduced,
and the working efficiency is increased in the assembling process.
Ultimately, the cost of production can be saved.
[0046] Although exemplary embodiments of the present invention have
been described for illustrative purposes, those skilled in the art
will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and
spirit of the invention as disclosed in the accompanying
claims.
* * * * *