CN216199006U - Rotary compressor and refrigeration equipment - Google Patents
Rotary compressor and refrigeration equipment Download PDFInfo
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- CN216199006U CN216199006U CN202122733002.XU CN202122733002U CN216199006U CN 216199006 U CN216199006 U CN 216199006U CN 202122733002 U CN202122733002 U CN 202122733002U CN 216199006 U CN216199006 U CN 216199006U
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Abstract
The utility model discloses a rotary compressor and refrigeration equipment, wherein the rotary compressor comprises an outer shell, an inner shell and an elastic assembly, a partition plate is arranged in the outer shell, and an inner cavity of the outer shell is divided into an upper cavity and a lower cavity by the partition plate; interior casing is located the epicoele, interior casing internally mounted has pump body portion and motor portion, interior casing is equipped with first support frame and second support frame respectively along axial both ends, elastic component is provided with first elastic component and second elastic component, first elastic component is located between first support frame and the baffle, the second elastic component is located between second support frame and the shell body, thereby make the vibration of installing in the inside pump body portion of interior casing and motor portion production, pass to the shell body again after the damping of first elastic component and second elastic component, thereby can reduce the amplitude of shell body vibration, reduce the radiation noise that rotary compressor during operation produced, the travelling comfort that improves the use.
Description
Technical Field
The utility model relates to the field of compressors, in particular to a rotary compressor and refrigeration equipment.
Background
In the related art, the rotary compressor generally includes a housing, a pump body portion and a motor portion, the pump body portion and the motor portion are both disposed in the housing, and the motor portion drives a crankshaft of the pump body portion to rotate, so as to drive a piston mounted at an end portion of the crankshaft to compress refrigerant gas in a compression cavity of the pump body portion. However, because the motor portion and the pump portion are usually fixed to the inner wall of the casing by welding or hard connection such as shrink fit, the vibration generated by the motor portion and the pump portion during operation can be directly transmitted to the casing, which causes the casing to generate large vibration and outward radiation noise, so that the operating noise of the rotary compressor is large, and the comfort of use is affected.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a rotary compressor, which can reduce the vibration transmitted to an outer shell by a motor part and a pump body part, is beneficial to reducing the radiation noise of the rotary compressor and improves the use comfort.
The utility model also provides refrigeration equipment with the rotary compressor.
According to an embodiment of a first aspect of the present invention, a rotary compressor includes:
the inner cavity of the outer shell is divided into an upper cavity and a lower cavity by the partition plate;
the inner shell is positioned in the upper cavity, the pump body part and the motor part are installed in the inner shell, and a first support frame and a second support frame are respectively arranged at two ends of the inner shell along the axial direction;
the elastic assembly comprises a first elastic piece and a second elastic piece and is used for arranging the inner shell and the outer shell at intervals;
the first elastic piece is arranged between the first support frame and the partition plate and can enable the first support frame to be far away from the partition plate along the axial direction;
the second elastic piece is arranged between the second support frame and the outer shell and can enable the second support frame to be far away from the outer shell along the axial direction.
The rotary compressor according to the embodiment of the first aspect of the present invention has at least the following advantages:
this rotary compressor is through being provided with interior casing, shell body and elastic component, interior casing is fixed with first support frame and second support frame along axial both ends, elastic component is provided with first elastic component and second elastic component, first elastic component is located between first support frame and the baffle, the second elastic component is located between second support frame and the shell body, thereby make the vibration of installing in the inside pump body portion of interior casing and motor portion production, pass to the shell body again after the damping of first elastic component and second elastic component, thereby can reduce the amplitude of shell body vibration, reduce the radiation noise that rotary compressor during operation produced, the travelling comfort that improves the use.
According to some embodiments of the utility model, an end of the first support frame facing away from the inner shell is provided with a mounting portion, and an end of the first elastic member is mounted to the mounting portion.
According to some embodiments of the present invention, the first elastic member is a spring, the mounting portion is a mounting post, and one end of the spring is sleeved on the mounting post.
According to some embodiments of the utility model, the mounting posts are provided in plurality, and the mounting posts are circumferentially distributed at intervals at the end of the first support frame, and each mounting post is provided with one spring.
According to some embodiments of the utility model, the number of springs is n, the static stiffness is k, and the sum of the masses of the pump part, the motor part and the inner housing is M, satisfying the following relationship: m x g/(n x k) is less than or equal to 2mm, wherein g is the gravity acceleration.
According to some embodiments of the utility model, a limiting part is arranged at one end of the partition board facing the inner shell, and one end of the first elastic element facing away from the first support frame is mounted at the limiting part.
According to some embodiments of the utility model, the first support frame and/or the second support frame is an annular plate.
According to some embodiments of the utility model, the lower chamber is a reservoir chamber, and the pump body portion is provided with an air return pipe communicating with the reservoir chamber.
According to some embodiments of the utility model, the partition plate is provided with a mounting hole communicated with the liquid storage cavity, and the air return pipe is inserted into the mounting hole.
The refrigeration equipment according to the second aspect embodiment of the utility model comprises the rotary compressor of the first aspect embodiment of the utility model.
The refrigeration equipment according to the embodiment of the second aspect of the utility model has at least the following advantages:
the refrigeration equipment comprises the rotary compressor provided by the embodiment of the first aspect of the utility model, the rotary compressor is provided with the inner shell, the outer shell and the elastic component, the first support frame and the second support frame are fixed at two ends of the inner shell along the axial direction, the elastic component is provided with the first elastic part and the second elastic part, the first elastic part is arranged between the first support frame and the partition plate, and the second elastic part is arranged between the second support frame and the outer shell, so that the vibration generated by the pump body part and the motor part which are arranged inside the inner shell is transmitted to the outer shell after being subjected to vibration reduction by the first elastic part and the second elastic part, the vibration amplitude of the outer shell can be reduced, the radiation noise generated during the operation of the rotary compressor is reduced, the working noise of the refrigeration equipment is reduced, and the use comfort of the refrigeration equipment is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
Fig. 1 is a schematic sectional view illustrating a rotary compressor according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
fig. 4 is a schematic structural diagram of a first support frame according to an embodiment of the utility model;
fig. 5 is a schematic cross-sectional view of the first support frame according to the embodiment of the present invention.
Reference numerals:
an outer case 100; an upper case portion 110; an upper chamber 111; a lower cavity 112; a main housing portion 120; a lower housing portion 130; a partition 140; a stopper 141; mounting holes 142;
an inner case 200; a first support frame 210; a mounting portion 211; a second support frame 220;
an elastic member 300; a first elastic member 310; a second elastic member 320;
a motor part 400;
a pump body portion 500; an air return pipe 510.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as set, mounted, connected, assembled, matched and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention by combining the specific contents of the technical solutions.
In the related art, the rotary compressor generally includes a housing, a pump body portion and a motor portion, the pump body portion and the motor portion are both disposed in the housing, and the motor portion drives a crankshaft of the pump body portion to rotate, so as to drive a piston mounted at an end portion of the crankshaft to compress refrigerant gas in a compression cavity of the pump body portion. However, since the motor part and the pump body part are usually fixed on the inner wall of the casing by hard connection methods such as welding/shrink fit, the vibration generated by the motor part and the pump body part during operation can be directly transmitted to the casing, which causes the casing to generate larger vibration and radiate noise outwards, so that the operating noise of the rotary compressor is larger, and the comfort of use is affected.
In order to solve at least one of the above technical problems, the present invention provides a rotary compressor, which can reduce the vibration transmitted from a motor part and a pump body part to an outer casing, thereby being beneficial to reducing the radiation noise of the rotary compressor and improving the comfort of use.
Referring to fig. 1 to 3, in the rotary compressor according to the embodiment of the first aspect of the present invention, the shell of the rotary compressor is a double-shell structure formed by an outer shell 100 and an inner shell 200, a partition plate 140 is installed in an inner cavity of the outer shell 100, the partition plate 140 is located in an area of the inner cavity near a lower end of the outer shell 100, so as to axially divide the inner cavity of the outer shell 100 into an upper cavity 111 and a lower cavity 112, and the inner shell 200 is disposed in the upper cavity 111. Specifically, the partition plate 140 may be made of steel and fixedly mounted on the inner wall of the outer housing 100 by welding, bonding, riveting, or the like, so as to divide the inner cavity into the upper cavity 111 and the lower cavity 112.
It is understood that, in some embodiments of the present invention, the outer case 100 includes an upper case part 110, a main case part 120, and a lower case part 130, and the upper case part 110 and the lower case part 130 are hermetically coupled to both ends of the main case part 120 in an axial direction, respectively. Thus, when the outer case 100 is manufactured, the main case part 120, the upper case part 110, and the lower case part 130 may be separately manufactured, which is advantageous to improve the efficiency of processing.
Referring to fig. 1, of course, the rotary compressor further includes a pump body part 500 and a motor part 400, and the pump body part 500 and the motor part 400 are installed in the inner cavity of the inner casing 200. Specifically, the pump part 500 is located at a lower end in the inner cavity, and the motor part 400 is located at an upper end in the inner cavity.
The motor part 400 includes a rotor and a stator, the stator is fixed to an inner wall of the inner housing 200, and the rotor is rotatable with respect to the stator. The rotor is connected to the crankshaft of the pump body 500, which can drive the crankshaft to rotate.
The pump body 500 includes a cylinder, an upper bearing, a lower bearing, a muffler and a crankshaft, the upper bearing is mounted on the upper end surface of the cylinder in a matching manner, and the lower bearing is mounted on the lower end surface of the cylinder in a matching manner, so that a compression chamber is formed inside the cylinder. The silencer is arranged at the upper end of the upper bearing and used for reducing airflow noise generated when the compression cavity exhausts.
One end of the crankshaft is connected with the rotor, the other end of the crankshaft is sleeved with a piston, the piston is located in the compression cavity, and the piston is driven by the crankshaft to do eccentric rotation motion in the compression cavity, so that the working volume of the compression cavity generates periodic change. The piston and the matched slide sheet divide the compression cavity into a low-pressure cavity and a high-pressure cavity.
The rotary compressor is generally further provided with a liquid storage part connected to the pump body part 500 to provide a refrigerant to the pump body part 500, a crankshaft of the pump body part 500 is driven by a rotor of the motor part 400 to rotate, so that the pump body part 500 can perform processes of air suction, compression and exhaust, and the refrigerant is compressed by the pump body part 500, discharged through an exhaust pipe of the outer shell 100, and then enters a refrigeration device cycle.
Referring to fig. 1, when the rotary compressor works, the motor part 400 and the pump body part 500 generate vibration, and the vibration is transmitted to the outer shell 100 through the inner shell 200, so that the outer shell 100 generates radiation noise, and the working noise of the rotary compressor is relatively high, which affects the comfort of use. For this reason, the rotary compressor further includes an elastic assembly 300, and the elastic assembly 300 has good elasticity, and the elastic assembly separates the inner casing 200 and the outer casing 100, and can reduce vibration of the inner casing 200 and then transmit the vibration to the outer casing 100, thereby reducing radiation noise caused by vibration of the outer casing 100.
Referring to fig. 1, specifically, the first support frame 210 and the second support frame 220 are respectively installed at two ends of the inner casing 200 along the axial direction, and the first support frame 210 and the second support frame 220 may be made of steel and may be fixed to an inner wall of an end of the inner casing 200 by welding or the like.
The elastic assembly 300 includes a first elastic member 310 and a second elastic member 320, the first elastic member 310 is disposed between the first support frame 210 and the partition plate 140, and at this time, two ends of the first elastic member 310 respectively abut against an end surface of the first support frame 210 and an end surface of the partition plate 140 and are deformed by compression, so that the first elastic member 310 has a tendency to push the first support frame 210 to drive the inner housing 200 to move away from the partition plate 140 along the axial direction. When the inner housing 200 vibrates and moves toward the partition 140, the first elastic member 310 is pushed by the inner housing 200 through the first supporting member 210, so that the first elastic member 310 deforms to absorb the energy of the vibration, thereby damping the vibration transmitted from the inner housing 200 to the outer housing 100 and achieving the vibration damping effect.
The second elastic element 320 is disposed between the second supporting frame 220 and the outer casing 100, and two ends of the second elastic element 320 respectively abut against an end surface of the second supporting frame 220 and an inner wall of the outer casing 100 and are pressed to deform, so that the second elastic element 320 has a tendency to push the second supporting frame 220 to drive the inner casing 200 to move away from the outer casing 100 along the axial direction. When the inner housing 200 vibrates and moves toward the end of the outer housing 100, the inner housing 200 pushes the second elastic member 320 through the second supporting member 220, so that the second elastic member 320 deforms to absorb the energy of the vibration, thereby damping the vibration transmitted from the inner housing 200 to the outer housing 100 and achieving the vibration damping effect.
Specifically, the first elastic member 310 and the second elastic member 320 may be made of a material having good elasticity, which may achieve a good vibration damping effect. For example, the first elastic member 310 and the second elastic member 320 may be made of an elastic material such as a spring or rubber.
This rotary compressor is through being provided with interior casing 200, outer casing 100 and elastic component 300, interior casing 200 is fixed with first support frame 210 and second support frame 220 along axial both ends, elastic component 300 is provided with first elastic component 310 and second elastic component 320, first elastic component 310 is located between first support frame 210 and baffle 140, second elastic component 320 is located between second support frame 220 and outer casing 100, thereby make the vibration that installs in the inside pump body portion 500 of interior casing 200 and motor portion 400 and produce, pass to outer casing 100 after the damping of first elastic component 310 and second elastic component 320, thereby can reduce the amplitude of outer casing 100 vibration, reduce the radiation noise that rotary compressor during operation produced, improve the travelling comfort of using.
Referring to fig. 2, it can be understood that, in some embodiments of the present invention, the first support frame 210 has a mounting portion 211, the mounting portion 211 is located at an end of the first support frame 210 facing away from the inner housing 200, and one end of the first elastic member 310 can be mounted on the mounting portion 211, so that one end of the first elastic member 310 can be connected to an end surface of the first support frame 210 in a limited manner, and the one end of the first elastic member 310 is prevented from shaking an excessive distance relative to the end surface of the first support frame 210 to affect a degree of deformation of the first elastic member 310, thereby affecting a vibration damping effect. It is understood that the second supporting frame 220 has a similar structure to the first supporting frame 210, and an end of the second supporting frame 220 facing away from the inner housing 200 may also be provided with a mounting portion 211, and an end of the second elastic element 320 is mounted on the mounting portion 211.
Referring to fig. 2, it can be appreciated that, in some embodiments of the present invention, the first elastic member 310 is configured as a spring, which may be a compression spring or the like type of spring. The installation portion 211 is arranged as an installation column matched with the spring, and one end of the spring is sleeved on the outer side of the installation column, so that one end of the spring can be limited on the end face of the first support frame 210. When the spring is pressed, the end part of the spring is sleeved on the outer side of the mounting column, so that the end part of the spring is prevented from transversely shaking relative to the first support frame 210 to influence the vibration reduction effect.
Referring to fig. 2, 4 and 5, it should be noted that, in order to improve the vibration reduction effect, in some embodiments of the present invention, a plurality of mounting posts may be provided, the plurality of mounting posts are circumferentially distributed at intervals at an end of the first support frame 210, and each mounting post is provided with a spring, so that a plurality of spring support points are distributed between the first support frame 210 and the partition plate 140, and thus, when the inner housing 200 vibrates, the plurality of springs can be stressed at the same time to deform and absorb the vibration energy, thereby greatly improving the vibration reduction effect.
Referring to fig. 4, specifically, the plurality of mounting posts are uniformly arranged along the circumferential direction of the first support frame 210, so that the stress points of the first support frame 210 are distributed more uniformly, which is beneficial to further improving the vibration reduction effect.
Referring to fig. 2, similarly, in some embodiments of the present invention, the partition plate 140 may further be provided with a limiting portion 141, the limiting portion 141 is disposed at an end of the partition plate 140 facing the inner housing 200, the limiting portion 141 is in a cylindrical structure, the first elastic member 310 is a spring, and an end of the spring away from the first support frame 210 is mounted at the limiting portion 141, so that an end of the first elastic member 310 may be limited by the limiting portion 141, and an end of the first elastic member 310 is prevented from shaking an excessive distance relative to an end surface of the partition plate 140 to affect a degree of deformation of the first elastic member 310, thereby affecting a vibration reduction effect.
It will be appreciated that in order to reduce the amplitude of the axial movement of the inner housing 200 when it vibrates in the upper chamber 111, the spring needs to have a high static stiffness so that when the spring is subjected to a large pressure, the deformation of the spring is not so great as to cause the inner housing 200 to move a large distance.
To this end, in some embodiments of the present invention, the number of springs between the first support and the partition 140 is n, the static stiffness of the springs is k, and the sum of the masses of the pump part 500, the motor part 400, and the inner housing 200 is M, satisfying the relation: m x g/(n x k) is less than or equal to 2mm, wherein g is the gravity acceleration. At this time, the spring has a high static stiffness, and under the action of the self-gravity of the pump body part 500, the motor part 400 and the inner shell 200, the deformation degree of the spring is less than or equal to 2mm, so that the inner shell 200 is prevented from moving an excessive distance when vibrating, and the damage of the compressor caused by collision between the inner shell 200 and the outer shell 100 can be avoided as much as possible.
Referring to fig. 4, it can be appreciated that, in order to reduce material cost, in some embodiments of the present invention, the first support frame 210 and/or the second support frame 220 are configured as an annular plate, and a through hole is formed in a middle portion of the plate, so that material consumption can be greatly reduced, material cost can be reduced, and the through hole can facilitate discharging a refrigerant inside the inner shell 200 into the inner cavity of the outer shell 100.
Referring to fig. 1 and 3, a rotary compressor is generally provided with a liquid reservoir. In the related art, the liquid storage portion is configured as a liquid storage tank, and the liquid storage tank is disposed outside the outer housing 100 and connected to the pump body portion 500 through a pipeline, and at this time, the liquid storage tank needs to occupy a large installation space. In order to reduce the space occupied by the liquid storage portion and simultaneously make full use of the space inside the outer shell 100, in some embodiments of the present invention, the lower cavity 112 of the outer shell 100 is provided as a liquid storage cavity for storing low-pressure refrigerant, and the liquid storage cavity constitutes the liquid storage portion of the compressor. The pump body 500 is provided with an air return pipe 510, and the air return pipe 510 is communicated with the liquid storage cavity. The low-pressure refrigerant enters the pump body part 500 through the air return pipe 510, then the pump body part 500 compresses the low-pressure refrigerant under the driving of the motor part 400, so that the low-pressure refrigerant is changed into the high-pressure refrigerant and is discharged through the exhaust pipe of the outer shell 100, and the high-pressure refrigerant is changed into the low-pressure refrigerant after entering the refrigeration device for circulation and enters the liquid storage cavity again.
Referring to fig. 3, it can be understood that the partition plate 140 is provided with a mounting hole 142, the mounting hole 142 is communicated with the reservoir chamber, and one end of the air return pipe 510 passes through a through hole in the middle of the first support frame 210 and is inserted into the mounting hole 142 of the partition plate 140 to communicate with the reservoir chamber. Through setting up as above for the tip of muffler 510 can obtain the spacing of mounting hole 142, avoids the tip of muffler 510 to rock easily under the vibration effect of pump body portion 500 and influence the return air.
The refrigeration equipment of the embodiment of the second aspect of the utility model comprises the rotary compressor of the embodiment of the first aspect of the utility model. The refrigerating equipment can be a refrigerator or an air conditioner, and can be other types of refrigerating devices.
The refrigeration equipment of the second aspect of the present invention includes the rotary compressor of the first aspect of the present invention, the rotary compressor is provided with the inner casing 200, the outer casing 100 and the elastic component 300, the first support frame 210 and the second support frame 220 are fixed at two ends of the inner casing 200 along the axial direction, the elastic component 300 is provided with the first elastic member 310 and the second elastic member 320, the first elastic member 310 is arranged between the first support frame 210 and the partition plate 140, the second elastic member 320 is arranged between the second support frame 220 and the outer casing 100, so that the vibration generated by the pump body part 500 and the motor part 400 installed inside the inner casing 200 is transmitted to the outer casing 100 after being damped by the first elastic member 310 and the second elastic member 320, thereby the vibration amplitude of the outer casing 100 can be reduced, the radiation noise generated when the rotary compressor works can be reduced, and the working noise of the refrigeration equipment can be reduced, the comfort of the refrigeration equipment is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A rotary compressor, comprising:
the inner cavity of the outer shell is divided into an upper cavity and a lower cavity by the partition plate;
the inner shell is positioned in the upper cavity, the pump body part and the motor part are installed in the inner shell, and a first support frame and a second support frame are respectively arranged at two ends of the inner shell along the axial direction;
the elastic assembly comprises a first elastic piece and a second elastic piece and is used for arranging the inner shell and the outer shell at intervals; the first elastic piece is arranged between the first support frame and the partition plate and can enable the first support frame to be far away from the partition plate along the axial direction; the second elastic piece is arranged between the second support frame and the outer shell and can enable the second support frame to be far away from the outer shell along the axial direction.
2. The rotary compressor of claim 1, wherein: first support frame deviates from the one end of interior casing is equipped with the installation department, the one end of first elastic component install in the installation department.
3. The rotary compressor of claim 2, wherein: the first elastic piece is a spring, the installation part is an installation column, and one end of the spring is sleeved on the installation column.
4. The rotary compressor of claim 3, wherein: the mounting post is equipped with a plurality ofly, and is a plurality of the mounting post is in along circumference interval distribution in the tip of first support frame, every the mounting post all installs one the spring.
5. The rotary compressor of claim 4, wherein: the number of the springs is n, the static stiffness is k, the sum of the masses of the pump body part, the motor part and the inner shell is M, and the following relations are satisfied: m x g/(n x k) is less than or equal to 2mm, wherein g is the gravity acceleration.
6. The rotary compressor of claim 1, wherein: the baffle orientation the one end of interior casing is equipped with spacing portion, the one end that first elastic component deviates from first support frame install in spacing portion.
7. The rotary compressor of any one of claims 1 to 6, wherein: the first support frame and/or the second support frame are annular plates.
8. The rotary compressor of claim 7, wherein: the lower cavity is a liquid storage cavity, and the pump body part is provided with an air return pipe communicated with the liquid storage cavity.
9. The rotary compressor of claim 8, wherein: the baffle is provided with a mounting hole communicated with the liquid storage cavity, and the air return pipe is inserted in the mounting hole.
10. A refrigerating apparatus comprising the rotary compressor of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122733002.XU CN216199006U (en) | 2021-11-08 | 2021-11-08 | Rotary compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122733002.XU CN216199006U (en) | 2021-11-08 | 2021-11-08 | Rotary compressor and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199006U true CN216199006U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122733002.XU Active CN216199006U (en) | 2021-11-08 | 2021-11-08 | Rotary compressor and refrigeration equipment |
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| CN (1) | CN216199006U (en) |
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2021
- 2021-11-08 CN CN202122733002.XU patent/CN216199006U/en active Active
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