U.S. patent application number 17/058657 was filed with the patent office on 2021-07-01 for pump body assembly, compressor and air conditioner.
The applicant listed for this patent is GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI. Invention is credited to Liying DENG, Shebing LIANG, Guoliang LIU, Xixing LIU, Pengkai WAN, Huijun WEI, Jia XU, Guomang YANG.
Application Number | 20210199113 17/058657 |
Document ID | / |
Family ID | 1000005504245 |
Filed Date | 2021-07-01 |
United States Patent
Application |
20210199113 |
Kind Code |
A1 |
WEI; Huijun ; et
al. |
July 1, 2021 |
PUMP BODY ASSEMBLY, COMPRESSOR AND AIR CONDITIONER
Abstract
A pump body assembly, a compressor and an air conditioner are
provided. The pump body assembly includes a cylinder assembly,
which is connected to a first flange and a second flange
respectively and is disposed between the first flange and the
second flange; a rotation shaft, which is provided and passes
through the first flange, the cylinder assembly and the second
flange in sequence, and which is provided thereon with sliding vane
grooves; and a sliding vane, which is provided inside the sliding
vane groove and fits the cylinder assembly to form a working cavity
in the cylinder assembly. The first flange is provided thereon with
an exhaust channel which is in communication with the working
cavity, and the second flange is provided thereon with a gas flow
balance portion.
Inventors: |
WEI; Huijun; (Zhuhai,
CN) ; YANG; Guomang; (Zhuhai, CN) ; XU;
Jia; (Zhuhai, CN) ; DENG; Liying; (Zhuhai,
CN) ; LIANG; Shebing; (Zhuhai, CN) ; WAN;
Pengkai; (Zhuhai, CN) ; LIU; Xixing; (Zhuhai,
CN) ; LIU; Guoliang; (Zhuhai, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI |
Zhuhai |
|
CN |
|
|
Family ID: |
1000005504245 |
Appl. No.: |
17/058657 |
Filed: |
December 12, 2018 |
PCT Filed: |
December 12, 2018 |
PCT NO: |
PCT/CN2018/120667 |
371 Date: |
November 25, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04C 14/12 20130101;
F04C 2/3448 20130101; F04C 2240/60 20130101; F04C 2240/56
20130101 |
International
Class: |
F04C 14/12 20060101
F04C014/12; F04C 2/344 20060101 F04C002/344 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 31, 2018 |
CN |
201811012720.4 |
Claims
1. A pump body assembly, comprising: a first flange; a second
flange; a cylinder assembly connected to the first flange and the
second flange respectively, and the cylinder assembly being
disposed between the first flange and the second flange; a rotation
shaft provided and passing through the first flange, the cylinder
assembly and the second flange in sequence, and a sliding vane
groove being provided on the rotation shaft; and a sliding vane
provided inside the sliding vane groove, and the sliding vane
fitting the cylinder assembly to form a working cavity inside the
cylinder assembly; wherein an exhaust channel is provided in the
first flange and is in communication with the working cavity, and a
gas flow balance portion is provided on the second flange; when the
working cavity is in an exhausting state, a gas flow in the
cylinder assembly generates a force of a torque (F) at the gas flow
balance portion; the force is applied to an end of the sliding
vane, and the end of the sliding vane is away from the exhaust
channel; and the sliding vane does not tilt during a working
process of the working cavity.
2. The pump body assembly according to claim 1, wherein the gas
flow balance portion is disposed at a position of the second
flange, and the position of the second flange is opposite to the
exhaust channel.
3. The pump body assembly according to claim 1, wherein the gas
flow balance portion is a groove; the groove is provided on a
surface of the second flange; and the surface of the second flange
faces the exhaust channel.
4. The pump body assembly according to claim 3, wherein a
projection of the exhaust channel on the second flange coincides
with the groove.
5. The pump body assembly according to claim 1, wherein the gas
flow balance portion is an exhaust through hole; the exhaust
through hole is provided in and passes through the second flange;
and the exhaust through hole is arranged opposite to the exhaust
channel.
6. The pump body assembly according to claim 5, wherein a
cross-sectional profile line of the exhaust through hole is
identical with a cross-sectional profile line of the exhaust
channel.
7. The pump body assembly according to claim 1, wherein an annular
protrusion is provided on a part of outer peripheral surface of the
rotation shaft, and the annular protrusion is disposed inside the
cylinder assembly; the sliding vane groove is provided on the
annular protrusion, and extends along a radial direction of the
annular protrusion.
8. The pump body assembly according to claim 7, wherein a plurality
of the sliding vane grooves are provided, and the plurality of the
sliding vane grooves are arranged at intervals along a
circumferential direction of the annular protrusion; a plurality of
sliding vanes are provided, and the plurality of sliding vanes are
arranged to correspond to the plurality of the sliding vane grooves
one-to-one; and the plurality of the sliding vanes divide an inside
of the cylinder assembly into a plurality of independent working
cavities.
9. The pump body assembly according to claim 8, wherein the
cylinder assembly comprises: a cylinder; a rolling member provided
inside the cylinder and sleeved on the rotation shaft, the
plurality of the sliding vane grooves fitting an inner wall surface
of the rolling member to divide space between the inner wall
surface of the rolling member and the rotation shaft into the
plurality of independent working cavities; and a bearing sleeve
sleeved on the rolling member, at least a part of the bearing
sleeve being located between an inner wall surface of the cylinder
and an outer peripheral surface of the rolling member, and a
rolling body being provided between the rolling member and the
bearing sleeve.
10. The pump body assembly according to claim 1, wherein a cross
section of the exhaust channel is in a shape of a rhombus.
11. A compressor, comprising a pump body assembly, wherein the pump
body assembly is the pump body assembly of claim 1.
12. An air conditioner, comprising a pump body assembly, wherein
the pump body assembly is the pump body assembly of claim 1.
13. The pump body assembly according to claim 2, wherein the gas
flow balance portion is a groove; the groove is provided on a
surface of the second flange; and the surface of the second flange
faces the exhaust channel.
14. The pump body assembly according to claim 2, wherein the gas
flow balance portion is an exhaust through hole; the exhaust
through hole is provided in and passes through the second flange;
and the exhaust through hole is arranged opposite to the exhaust
channel.
15. The pump body assembly according to claim 1, wherein the
working cavity comprises a compression cavity and an intake
cavity.
16. The pump body assembly according to claim 4, wherein a shape
and a size of the projection of the exhaust channel are the same as
a shape and a size of the groove.
17. The pump body assembly according to claim 6, wherein a ratio of
a length to a width of the exhaust channel is less than or equal to
4.
18. The pump body assembly according to claim 9, wherein three
sliding vanes are provided, and the three sliding vanes and an
inner ring of the rolling member divide an entire crescent cavity
into three independent cavities.
19. The compressor according to claim 11, wherein an oil pump is
provided on a lower part of the pump body assembly and immersed in
an oil pool disposed at a bottom of the compressor.
20. The compressor according to claim 19, wherein the pump body
assembly further comprises a baffle, a valve sheet and a cover
plate, and the oil pump is connected to the cover plate.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims all benefits accruing under 35
U.S.C. .sctn. 119 from China Patent Application No. 201811012720.4,
filed on Aug. 31, 2018 in the China National Intellectual Property
Administration, the entire content of which is hereby incorporated
by reference. This application is a national phase under 35 U.S.C.
.sctn. 120 of international patent application PCT/CN2018/120667,
entitled "PUMP BODY ASSEMBLY, COMPRESSOR AND AIR CONDITIONER" filed
on Dec. 12, 2018, the content of which is also hereby incorporated
by reference.
FIELD
[0002] The present disclosure relates to a field of air conditioner
equipment technology, and more particularly, to a pump body
assembly, a compressor and an air conditioner.
BACKGROUND
[0003] In the related technology, in order to ensure a uniform
exhaust speed of a compressor prototype, exhaust ports are
generally arranged in staggered positions. In addition, due to an
influence of special forms of the exhaust ports and a structure of
the compressor itself, forces exerted on a sliding vane 50' will be
affected to a certain extent at a time of exhausting. As shown in
FIG. 1, the sliding vane 50' is subjected to two forces F1 and F2
in different directions. The two forces generate a rotating torque.
The sliding vane will overturn under an action of the rotating
torque, which will cause the sliding vane 50' to collide with end
surfaces of an upper flange and a lower flange, and a cylinder,
thus reducing service life of the sliding vane 50', and reducing
usage reliability of the compressor.
SUMMARY
[0004] The present disclosure provides a pump body assembly, a
compressor and an air conditioner, to solve a problem of low
reliability of the compressor in the related technology.
[0005] In some embodiments, according to an aspect of the present
disclosure, a pump body assembly is provided and includes: a first
flange; a second flange; a cylinder assembly connected to the first
flange and the second flange respectively, and the cylinder
assembly being disposed between the first flange and the second
flange; and a rotation shaft provided and passing through the first
flange, the cylinder assembly and the second flange in sequence,
and a sliding vane groove being provided on the rotation shaft; and
a sliding vane provided inside the sliding vane groove, and the
sliding vane fitting the cylinder assembly to form a working cavity
inside the cylinder assembly; where an exhaust channel is provided
in the first flange and is in communication with the working
cavity, and a gas flow balance portion is provided on the second
flange; when the working cavity is in an exhausting state, a gas
flow in the cylinder assembly generates a force of a torque (F) at
the gas flow balance portion; the force is applied to an end of the
sliding vane, and the end of the sliding vane is away from the
exhaust channel; and the sliding vane does not tilt during a
working process of the working cavity.
[0006] Further the gas flow balance portion is disposed at a
position of the second flange, and the position of the second
flange is opposite to the exhaust channel.
[0007] Further the gas flow balance portion is a groove; the groove
is provided on a surface of the second flange; and the surface of
the second flange faces the exhaust channel.
[0008] Further a projection of the exhaust channel on the second
flange coincides with the groove.
[0009] Further the gas flow balance portion is an exhaust through
hole; the exhaust through hole is provided in and passes through
the second flange; and the exhaust through hole is arranged
opposite to the exhaust channel.
[0010] Further a cross-sectional profile line of the exhaust
through hole is identical with a cross-sectional profile line of
the exhaust channel.
[0011] Further an annular protrusion is provided on a part of outer
peripheral surface of the rotation shaft, and the annular
protrusion is disposed inside the cylinder assembly; the sliding
vane groove is provided on the annular protrusion, and extends
along a radial direction of the annular protrusion.
[0012] Further a plurality of the sliding vane grooves are
provided, and the plurality of sliding vane grooves are arranged at
intervals along a circumferential direction of the annular
protrusion; a plurality of sliding vanes are provided, and the
plurality of sliding vanes are arranged to correspond to the
plurality of sliding vane grooves one-to-one; and the plurality of
the sliding vanes divide an inside of the cylinder assembly into a
plurality of independent working cavities.
[0013] Further the cylinder assembly includes: a cylinder; a
rolling member provided inside the cylinder and sleeved on the
rotation shaft, the sliding vane grooves fitting an inner wall
surface of the rolling member to divide space between the inner
wall surface of the rolling member and the rotation shaft into the
working cavities; and a bearing sleeve sleeved on the rolling
member, at least a part of the bearing sleeve being located between
an inner wall surface of the cylinder and an outer peripheral
surface of the rolling member, and a rolling body being provided
between the rolling member and the bearing sleeve.
[0014] Further a cross section of the exhaust channel is in a shape
of a rhombus.
[0015] In some embodiments, the working cavity comprises a
compression cavity and an intake cavity.
[0016] In some embodiments, a shape and a size of the projection of
the exhaust channel are the same as a shape and a size of the
groove.
[0017] In some embodiments, a ratio of a length to a width of the
exhaust channel is less than or equal to 4.
[0018] In some embodiments, three sliding vanes are provided, and
the three sliding vanes and an inner ring of the rolling member
divide an entire crescent cavity into three independent
cavities.
[0019] According to another aspect of the present disclosure, a
compressor is provided and includes a pump body assembly. The pump
body assembly is the pump body assembly described above.
[0020] In some embodiments, an oil pump is provided on a lower part
of the pump body assembly and immersed in an oil pool disposed at a
bottom of the compressor.
[0021] In some embodiments, the pump body assembly further
comprises a baffle, a valve sheet and a cover plate, and the oil
pump is connected to the cover plate.
[0022] According to another aspect of the present disclosure, an
air conditioner is provided and includes a pump body assembly. The
pump body assembly is the pump body assembly described above.
[0023] In the embodiments of the present disclosure, since the
working cavity includes an intake cavity and a compression cavity,
a part of high-pressure gas remains in the exhaust channel during
an exhausting process of the working cavity. When the sliding vane
is about to sweep through the exhaust channel, the high-pressure
gas stored in the exhaust channel communicates with the intake
cavity of the working cavity. Because a pressure of the part of the
high-pressure gas is higher than that of the sucked gas, an
over-expansion phenomenon will occur in the working cavity, and an
gas flow direction in the working cavity points to the intake
cavity, which causes a resultant force exerted on an intake side of
the sliding vane to point to an end of the sliding vane away from
the exhaust channel. Under actions of these two resultant forces,
the sliding vane will be subjected to a rotating torque. Under an
action of this torque, the sliding vane will turnover, and then it
will collide with fine finished surfaces of the first flange and
the second flange to generate an impact. Since this impact changes
the force exerted on the sliding vane, it will also cause the
sliding vane to hit the cylinder, thus generating negative
vibration and noise of the compressor. By arranging the exhaust
channel in the first flange and arranging the gas flow balance
portion on the second flange, the rotating torque opposite to the
torque generated at the exhaust channel of the first flange is
generated at the gas flow balance portion to balance the torque
generated at the exhaust channel of the first flange, so that after
the rotating torque of the sliding vane is balanced, the forces
exerted on the sliding vane will be in a balanced state, preventing
the sliding vane from overturning, ensuring reliable operation of
the compressor, and effectively reducing the vibration and noise of
the compressor.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings attached to the specification form
a part of the present disclosure and are intended to provide a
further understanding of the present disclosure. The illustrative
embodiments of the present disclosure and the description thereof
are used for explanations of the present disclosure, and do not
constitute improper limitations of the present disclosure. In the
accompanying drawings:
[0025] FIG. 1 is a schematic diagram illustrating forces exerted on
a sliding vane in the related technology during an exhausting
process;
[0026] FIG. 2 shows an exploded structure diagram of a pump body
assembly according to some embodiments of the present
disclosure;
[0027] FIG. 3 is a schematic diagram illustrating forces exerted on
a sliding vane of a pump body assembly during an exhausting process
according to the present disclosure;
[0028] FIG. 4 shows a schematic structural view of the pump body
assembly from a first view angle according to a first embodiment of
the present disclosure;
[0029] FIG. 5 shows a schematic structural cross-sectional view in
an A-A direction in FIG. 4;
[0030] FIG. 6 shows a schematic structural cross-sectional view in
a B-B direction in FIG. 4;
[0031] FIG. 7 shows a schematic structural view of a pump body
assembly from a second view angle according to a second embodiment
of the present disclosure;
[0032] FIG. 8 shows a schematic structural cross-sectional view in
a C-C direction in FIG. 7;
[0033] FIG. 9 shows a schematic structural view of a second flange
of a pump body assembly according to some embodiments of the
present disclosure.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0034] It should be noted that the embodiments in the present
disclosure and the features in the embodiments can be combined with
each other if no conflicts occur. The present disclosure will be
described in detail below with reference to the accompanying
drawings in combination with the embodiments.
[0035] It should be noted that terms used herein are only for the
purpose of describing specific embodiments and not intended to
limit the exemplary embodiments of the disclosure. The singular of
a term used herein is intended to include the plural of the term
unless the context otherwise specifies. In addition, it should also
be appreciated that when terms "include" and/or "comprise" are used
in the description, they indicate the presence of features, steps,
operations, devices, components and/or their combination.
[0036] It should be noted that the terms "first", "second", and the
like in the description, claims and drawings of the present
disclosure are used to distinguish similar objects, and are not
necessarily used to describe a specific order or order. It should
be appreciated that such terms can be interchangeable if
appropriate, so that the embodiments of the disclosure described
herein can be implemented, for example, in an order other than
those illustrated or described herein. In addition, the terms
"comprise", "have" and any deformations thereof, are intended to
cover a non-exclusive inclusion, for example, a process, a method,
a system, a product, or a device that includes a series of steps or
units is not necessarily limited to explicitly list those steps or
units, but can include other steps or units that are not explicitly
listed or inherent to such a process, a method, a product or a
device.
[0037] For convenience of description, spatially relative terms
such as "above", "over", "on a surface of", "upper", etc., may be
used herein to describe the spatial position relationships between
one device or feature and other devices or features as shown in the
drawings. It should be appreciated that the spatially relative term
is intended to include different directions during using or
operating the device other than the directions described in the
drawings. For example, if the device in the drawings is inverted,
the device is described as the device "above other devices or
structures" or "on other devices or structures" will be positioned
"below other devices or structures" or "under other devices or
structures". Thus, the exemplary term "above" can include both
"above" and "under". The device can also be positioned in other
different ways (rotating 90 degrees or at other orientations), and
the corresponding description of the space used herein is
interpreted accordingly.
[0038] Now, the exemplary embodiments of the disclosure will be
further described in detail with reference to the accompanying
drawings. However, these exemplary embodiments can be implemented
in many different forms and should not be construed as only
limitation of the embodiments described herein. It should be
appreciated that the embodiments are provided to make the present
disclosure disclosed thoroughly and completely, and to fully convey
the concepts of the exemplary embodiments. In the accompanying
drawings, for the sake of clarity, the thicknesses of layers and
regions are enlarged, and a same reference sign is used to indicate
a same device, thus the description thereof will be omitted.
[0039] As shown in FIGS. 2-9, according to some embodiments of the
present disclosure, a pump body assembly is provided.
[0040] In one embodiment, the pump body assembly includes a first
flange 10, a second flange 20, a cylinder assembly 30, a rotation
shaft 40 and a sliding vane 50. The cylinder assembly 30 is
connected to the first flange 10 and the second flange 20
respectively. The cylinder assembly 30 is disposed between the
first flange 10 and the second flange 20. The rotation shaft 40 is
provided and passes through the first flange 10, the cylinder
assembly 30 and the second flange 20 in sequence. A sliding vane
groove 41 is provided on the rotation shaft 40. The sliding vane 50
is disposed inside the sliding vane groove 41. The sliding vane 50
fits the cylinder assembly 30 to form a working cavity inside the
cylinder assembly 30. An exhaust channel 11 is provided in the
first flange 10 and is in communication with the working cavity,
and a gas flow balance portion is provided on the second flange 20.
When the working cavity is in the exhausting state, a gas flow in
the cylinder assembly 30 generates a force of a torque F at the gas
flow balance portion, and the force is applied to an end of the
sliding vane 50, which is away from the exhaust channel 11, so that
the sliding vane 50 does not tilt during a working process of the
working cavity.
[0041] In this embodiment, since the working cavity includes an
intake cavity and a compression cavity, a part of high-pressure gas
remains in the exhaust channel during an exhausting process of the
working cavity. When the sliding vane is about to sweep through the
exhaust channel, the high-pressure gas stored in the exhaust
channel communicates with the intake cavity of the working cavity.
Because a pressure of the part high-pressure gas is higher than
that of the sucked gas, an over-expansion phenomenon will occur in
the working cavity, and a gas flow direction in the working cavity
points to the intake cavity, which causes a resultant force exerted
on an intake side of the sliding vane to point to an end of the
sliding vane away from the exhaust channel. Under actions of these
two resultant forces, the sliding vane will be subjected to a
rotating torque. Under an action of this torque, the sliding vane
will turnover, and then it will collide with fine finished surfaces
of the first flange and the second flange to generate an impact.
Since this impact changes the force exerted on the sliding vane, it
will also cause the sliding vane to hit the cylinder, thus
generating negative vibration and noise of the compressor. By
arranging the exhaust channel in the first flange and arranging the
gas flow balance portion on the second flange, the rotating torque
opposite to the torque generated at the exhaust channel of the
first flange is generated at the gas flow balance portion to
balance the torque generated at the exhaust channel of the first
flange, so that after the rotating torque of the sliding vane is
balanced, the forces exerted on the sliding vane will be in a
balanced state, preventing the sliding vane from overturning,
ensuring reliable operation of the compressor, and effectively
reducing the vibration and noise of the compressor.
[0042] The gas flow balance portion is disposed at a position of
the second flange 20, and the position is opposite to the exhaust
channel 11. This arrangement can further improve the stability and
reliability of the compressor.
[0043] In some embodiments, the gas flow balance portion is a
groove 21, and the groove 21 is provided on a surface of the second
flange 20, which faces the exhaust channel 11. This arrangement
enables the gas flow in the working cavity to generate a torque at
the groove 21 and apply the torque to the sliding vane during the
exhaust process of the working cavity, so that the sliding vane is
always in an equilibrium position and does not tilt. The working
cavity includes a compression cavity and an intake cavity. The
working cavity performs suction simultaneously performs
compression. In some embodiments, the first flange is an upper
flange, and the second flange is a lower flange. In some
embodiments, the first flange is a lower flange, and the second
flange is an upper flange.
[0044] In order to enable the torque generated at the groove 21 to
counteract the torque generated at the exhaust channel, a
projection of the exhaust channel 11 on the second flange 20
coincides with the groove 21. It should be noted that the
"coincide" used herein means that a shape and a size of the
projection of the exhaust channel 11 are exactly the same as a
shape and a size of the groove.
[0045] Further, the gas flow balance portion is an exhaust through
hole; the exhaust through hole is provided in and passes through
the second flange 20; and the exhaust through hole is arranged
opposite to the exhaust channel 11. This arrangement also plays a
role of balancing the sliding vane. Further, a cross-sectional
profile line of the exhaust through hole is identical with a
cross-sectional profile line of the exhaust channel.
[0046] An annular protrusion 42 is provided on a part of outer
peripheral surface of the rotation shaft 40, and the annular
protrusion 42 is disposed inside the cylinder assembly 30. The
sliding vane groove 41 is provided on the annular protrusion 42,
and extends along a radial direction of the annular protrusion 42.
A plurality of sliding vane grooves 41 are provided, and the
plurality of sliding vane grooves 41 are arranged at intervals
along a circumferential direction of the annular protrusion 42. A
plurality of sliding vanes 50 are provided, and the plurality of
sliding vanes 50 are arranged to correspond to the plurality of
sliding vane grooves 41 one-to-one. The plurality of sliding vanes
50 divide an inside of the cylinder assembly 30 into a plurality of
independent working cavities. This arrangement can improve the
performance of the compressor.
[0047] Further, the cylinder assembly 30 includes a cylinder 31, a
rolling member 32 and a bearing sleeve 33. The rolling member 32 is
arranged inside the cylinder 31 and sleeved on the rotation shaft
40. The sliding vane grooves 41 fit the inner wall surface of the
rolling member 32 to divide space between the inner wall surface of
the rolling member 32 and the rotation shaft 40 into the working
cavities. The bearing sleeve 33 is sleeved on the rolling member
32; at least a part of the bearing sleeve 33 is located between an
inner wall surface of the cylinder 31 and an outer peripheral
surface of the rolling member 32; and a rolling body 34 is provided
between the rolling member 32 and the bearing sleeve 33.
[0048] The above-mentioned embodiments can also be used in the
field of compressor equipment, that is, according to another aspect
of the present disclosure, a compressor is provided. The compressor
includes a pump body assembly, which is the pump body assembly of
any one of the above embodiments.
[0049] The above embodiments can also be used in the field of air
conditioner equipment, that is, according to yet another aspect of
the present disclosure, an air conditioner is provided, and
includes a pump body assembly, which is the pump body assembly of
any one of the above embodiments.
[0050] In one embodiment, the gas flow balance portion is provided
on the lower flange opposite to the exhaust channel, thus balancing
a pressure fluctuation at an exhaust port of the upper flange,
reducing a pressure disturbance to the sliding vane, and weakening
an impact of the sliding vane on the upper and lower flanges and on
the bearing. A vibration and noise level of a sliding vane
compressor is effectively improved. In this embodiment, the
cross-sectional profile line of the exhaust through hole is the
same as the cross-sectional profile line of the exhaust channel 11.
A ratio of a length to a width of the exhaust channel 11 is less
than or equal to 4. In some embodiments, the cross section of the
exhaust channel 11 is in a shape of a rhombus.
[0051] When the compressor is operating, the motor drives the
rotation shaft to rotate, and under the action of a centrifugal
force, the sliding vane extends from the sliding vane groove and
contacts an inner wall surface of an inner ring of the rolling
member. Along with a smooth operation of the compressor, the
sliding vane starts to perform a reciprocating motion in the
sliding vane groove, and a head of the sliding vane contacts the
inner wall surface and drives the inner ring to rotate. Three
sliding vanes are provided, and the three sliding vanes and the
inner ring of the rolling member divide the entire crescent cavity
into three independent cavities. These three cavities are
periodically enlarged and reduced to realize the intake and exhaust
of the compressor. During the movement of the compressor, the
sliding vane and the sliding vane groove form a closed space, which
is called a sliding vane back pressure cavity. There are also three
sliding vane back pressure cavities, and as the compressor
operates, the back pressure cavities are periodically enlarged and
reduced. An oil pump is provided on a lower part of the pump body
assembly and immersed in an oil pool disposed at a bottom of the
compressor. The rotation shaft rotates to drive the oil pump to
rotate. The oil pump is a positive displacement pump. In addition
to providing lubricating oil for friction pairs of the pump body,
the oil pump also provides the sliding vane back pressure cavities
with oil of a certain pressure.
[0052] As shown in FIGS. 4 to 6, the position of the sliding vane
when the compressor is exhausting is shown. At this time, the
compressor is exhausting, and the gas at the exhaust port has an
exhaust pressure Pd. At this time, the direction of the gas flow is
from the inside of the cylinder to the outside of the flange, and
gas is exhausted towards the upper part of the sliding vane. Due to
the high speed of the gas flow at the exhaust port, according to
the principle of dynamic and static energy conversion, the pressure
at the exhaust port is low, while the pressure at the lower part of
the sliding vane is high, therefore the direction of the resultant
force exerted on the exhaust side of the sliding vane is
upward.
[0053] As shown in FIGS. 7 and 8, the position of the sliding vane
after the compressor exhausts is shown. At this time, the sliding
vane will sweep through the exhaust port of the exhaust channel.
After the compressor exhausts, a part of the high-pressure gas will
remain at the exhaust port. However, when the sliding vane is about
to sweep the exhaust port, the high-pressure gas stored at the
exhaust port also communicates with the intake cavity. Because the
pressure of this part of the high-pressure gas is much higher than
that of the sucked gas, the over-expansion phenomenon will occur,
and the gas flow direction points to the intake cavity, thus the
resultant force exerted on the intake side of the sliding vane will
point to the lower part of the sliding vane. The schematic diagram
of the forces exerted on the sliding vane is shown in FIG. 1. In
this case, under the action of these two resultant forces (F1, F2),
the sliding vane will be subjected to a rotating torque. Under the
action of this rotating torque, the sliding vane will turnover, and
then will collide with the fine finished surfaces of the upper and
lower flanges to cause an impact. Since this impact changes the
forces exerted on the sliding vane, it will also cause the sliding
vane to hit the cylinder, thus generating negative vibration and
noise of the compressor.
[0054] As shown in FIG. 9, a groove is provided on the lower
flange. The position of the groove is symmetrically arranged with
the upper flange, but the groove does not penetrate the lower
flange. According to analysis of the forces relationship, a
rotating torque opposite to the torque generated at the exhaust
port of the upper flange will be generated to balance the torque
generated at the exhaust of the upper flange. In this case, after
the rotating torque of the sliding vane is balanced, the forces
exerted on the sliding vane will be balanced, avoiding the
overturning of the sliding vane, ensuring the reliable operation of
the compressor, and reducing the vibration and noise of the
compressor.
[0055] Where the pump body assembly also includes a baffle 61, a
valve sheet 62 and a cover plate 63. Where the oil pump 64 is
connected to the cover plate 63.
[0056] In addition to the above description, it also should be
noted that "one embodiment", "another embodiment", "an embodiment"
and the like in the description refer to that a specific feature, a
structure or a characteristic described in combination with the
embodiments is included in at least one embodiment of the general
description of the present disclosure. The same expression in
various locations in the specification does not necessarily refer
to the same embodiment. Furthermore, when a specific feature, a
structure, or a characteristic are described in combination with
any embodiments, what is claimed is that other embodiments which
are combined to implement such a feature, a structure, or a
characteristic are also included in the scope of the present
disclosure.
[0057] In the above embodiments, the descriptions of the various
embodiments have different emphases, and any portions that are not
detailed in certain embodiments can be seen in the related
descriptions of other embodiments.
* * * * *