CN214577726U - Air supplement unit and compressor - Google Patents

Abstract

The utility model belongs to the technical field of air condition compressor, a air supplement unit and compressor are disclosed. This air supplement unit includes: the valve disc is arranged in the rear cover, and a through hole is formed in the valve disc; the injection disc is arranged in the rear cover, one side of the injection disc, which is close to the valve disc, is provided with an avoidance groove, one side of the injection disc, which is far away from the valve disc, is convexly provided with a guide post, the guide post is inserted and connected to a static disc of the compressor, an injection channel is arranged in the guide post, and an air supplementing and air inlet cavity is formed among the rear cover, the valve disc and the static disc; and the injection valve plate is arranged between the valve disc and the injection disc and is attached to the valve disc, a movable plate is arranged on the injection valve plate, the movable plate, the valve disc and the avoidance groove form a one-way valve structure, so that an air supplementing refrigerant entering from the air supplementing port sequentially passes through the air supplementing air inlet cavity, the through hole and the one-way valve structure and enters the static disc through the injection channel. The air supply device directly guides the refrigerant into the compression cavity of the compressor through the air supply device, so that the compressor obtains higher heating capacity in a low-temperature environment.

Description

Air supplement unit and compressor

Technical Field

The utility model relates to an air condition compressor technical field especially relates to an air supplement unit and compressor.

Background

The automobile field generally utilizes a compressor as equipment for compressing a refrigerant, and is different from the traditional fuel oil automobile, because an electric automobile does not have an engine, most of the electric automobiles adopt PTC heating, and the heating efficiency is low. Therefore, a heat pump system is required to meet the heating requirement of the vehicle in a low-temperature environment, so that the low-temperature heat pump electric compressor is required to provide larger heating quantity and higher efficiency in the low-temperature environment besides the refrigerating requirement. However, in the low temperature environment below-20 ℃, the conventional electric scroll compressor has the problems of insufficient heating capacity due to too low suction pressure, too high exhaust temperature, low working efficiency, increased abrasion among mechanical parts due to long-term operation, failure of refrigerating oil and the like.

In order to solve the problem, the conventional compressor realizes the air supplementing function by utilizing an air supplementing assembly, the air supplementing assembly comprises a cover plate, a one-way valve, a sealing gasket and a bolt, the structure is complex, the volume and the mass of the compressor are increased, the assembly performance is poor, the number of production processes is large, and the production cost is high. Meanwhile, the one-way valve structure causes overlarge pressure drop, and causes air supplement delay to influence the efficiency of the compressor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air supplement unit and compressor to guarantee the compression effect under low temperature environment, simple structure, manufacturing cost is lower.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an air supplement unit for the tonifying qi of compressor cover after the compressor is provided with the tonifying qi mouth, air supplement unit includes:

the valve disc is arranged in the rear cover, and a through hole is formed in the valve disc;

the injection disc is arranged in the rear cover, an avoidance groove is formed in one side, close to the valve disc, of the injection disc, a guide post is convexly arranged on one side, far away from the valve disc, of the injection disc, the guide post is inserted into a static disc of the compressor, an injection channel is arranged in the guide post, and an air supplementing and intaking cavity is formed among the rear cover, the valve disc and the static disc;

the injection valve block, it set up in between the valve disc with the injection dish and with the valve disc is laminated mutually be provided with the movable plate on the injection valve block, the movable plate the valve disc reaches dodge the groove and form the check valve structure, make follow the tonifying qi refrigerant that the tonifying qi mouth got into loops through tonifying qi admit air chamber, via hole and the check valve structure, and pass through injection passage gets into in the quiet dish.

Preferably, a movable gap is arranged between the movable plate and the injection valve plate, and the movable gap is of a U-shaped structure.

Preferably, the spraying device further comprises a first sealing ring, wherein the first sealing ring is sleeved on the spraying disc and is positioned between the spraying disc and the inner wall of the rear cover.

Preferably, the inner wall of the rear cover is divided into the air supply and intake cavity and the exhaust high-pressure cavity by the first sealing ring.

Preferably, the injection device further comprises a second sealing ring, wherein the second sealing ring is sleeved on the guide column and is positioned between the injection disc and the static disc.

Preferably, the valve further comprises positioning pieces, and the positioning pieces penetrate through the injection disc, the injection valve plate and the valve disc respectively.

Preferably, the spraying device further comprises a clamp spring, wherein the clamp spring is sleeved on the spraying disc, is positioned between the spraying disc and the rear cover and is used for axially limiting the spraying disc.

In order to achieve the above object, the utility model also provides a compressor, including body, driving disk, quiet dish, back lid and foretell air supplement unit that connects gradually be provided with the induction port on the body this internal being provided with the driving disk, the driving disk can for quiet dish rotates quiet dish with be provided with between the back lid air supplement unit, air supplement unit be used for right quiet dish carries out the tonifying qi.

Preferably, a static vortex plate is arranged on one side, close to the movable disc, of the static disc, a movable vortex plate is arranged on one side, close to the static disc, of the movable disc, a compression cavity is formed between the static vortex plate and the movable vortex plate, and the compression cavity is communicated with the air suction port and the air supplementing device.

Preferably, the bottom of the static vortex plate is provided with an injection hole, and the air supplementing device is communicated with the injection hole.

The utility model has the advantages that:

the utility model provides an air supplement unit, when needs tonifying qi, the tonifying qi refrigerant gets into tonifying qi air inlet chamber and flows into the via hole of valve disc via the tonifying qi mouth, there is the pressure differential in the both sides of spraying the valve block, makes the movable plate on the injection valve block open towards spraying the dish direction, and during the tonifying qi refrigerant got into the injection dish, the guide post in the injection dish got into the compression intracavity with the leading-in jet orifice of tonifying qi refrigerant in the quiet dish, by jet orifice injection to carry out the secondary compression. And the direct butt joint mode of the guide column and the static disc is adopted, so that the transmission reliability of the air-supplementing refrigerant is ensured. The injection channel is arranged in the guide column, so that the optimization of a gas flow channel is realized, the injection channel is of a linear structure, and the bending of the air supplementing refrigerant in the flow is reduced, so that the pressure drop is reduced, and the higher air supplementing efficiency is obtained.

One side through being close to the valve disc at the injection dish is provided with dodges the groove, dodges the groove and has played the effect of dodging to the movable plate, and the free end of movable plate removes to the direction of keeping away from the injection valve block, makes the tonifying qi refrigerant that flows from the via hole of valve disc can get into the movable plate and spray between the valve block, dodges the groove and provides the removal space for the movable plate to guarantee that the movable plate opens to the direction that is close to the injection dish. Set up between valve disc and injection dish and laminate mutually with the valve disc through the injection valve block, the valve disc plays limiting displacement to the opening direction of movable piece, if the free end of movable piece removes to the direction that is close to the valve disc, the valve disc is the flat structure, is difficult to provide for the movable piece and removes the space for the movable piece can only open towards injection dish direction, avoids the gaseous backward flow of compression intracavity to tonifying qi air inlet intracavity. Compared with the spring type one-way valve in the prior art, the one-way valve structure formed by the movable plate, the valve disc and the avoiding groove does not need to be provided with parts such as springs and bolts, the number and complexity of the parts are reduced, the part structure is simplified, the cost is reduced, and meanwhile, the sensitivity and the stability are improved.

The air supplementing opening is formed in the rear cover of the compressor, and a part of medium-high pressure refrigerants in the system are directly guided into the compression cavity of the compressor through the air supplementing opening, so that the flow of the refrigerants is increased, and the compressor can obtain higher heating capacity in a low-temperature environment.

The utility model provides a compressor, air supplement unit are used for carrying out the tonifying qi to the quiet dish, under tonifying qi mouth and air supplement unit's combined action, realize admitting air the supplementary function of gas to the gas suction port to guarantee that the refrigerant can be sufficient supply, thereby solve the not enough problem of heating under the low temperature environment, guarantee the work efficiency of compressor.

Drawings

Fig. 1 is a schematic structural diagram of the compressor of the present invention;

fig. 2 is an exploded schematic view of the compressor of the present invention;

FIG. 3 is a cross-sectional view of the moving and stationary disks of the compressor of the present invention;

FIG. 4 is a partial cross-sectional view of the air supply device of the present invention;

fig. 5 is a schematic structural view of the injection plate in the air supplement device of the present invention.

In the figure:

100. a body; 101. an air suction port;

200. a movable plate; 201. a movable scroll plate; 300. a stationary disc; 301. a static scroll plate; 302. an injection hole;

400. a rear cover; 401. an exhaust port; 402. an air supplement port; 500. a compression chamber;

1. a valve disc; 2. a spray tray; 3. an injection valve plate; 4. a gas supply and inlet cavity; 5. a first seal ring; 6. a second seal ring; 7. a positioning member; 8. a clamp spring; 9. an exhaust high pressure chamber;

11. a via hole;

21. an avoidance groove; 22. a guide post; 221. an injection channel;

31. a movable plate.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The present embodiment provides a compressor, as shown in fig. 1, the compressor includes a body 100 and a back cover 400 connected to each other, a suction port 101 is provided on the body 100, a discharge port 401 is provided on the back cover 400, the suction port 101 is a main air inlet channel, a refrigerant is sucked into the body 100 from the suction port 101, and is discharged from the discharge port 401 after the gas compression is completed. In order to sufficiently compress gas, as shown in fig. 2, a receiving cavity for receiving a motor, a movable plate 200 and a stationary plate 300 is formed between a body 100 and a rear cover 400, and the motor drives the movable plate 200 to rotate relative to the stationary plate 300 through a crankshaft to compress a refrigerant.

Specifically, as shown in fig. 3, a fixed scroll plate 301 is disposed on one side of the fixed disc 300 close to the movable disc 200, the fixed scroll plate 301 extends outward from the center of the fixed disc 300 along a spiral structure, a movable scroll plate 201 is disposed on one side of the movable disc 200 close to the fixed disc 300, the movable scroll plate 201 extends outward from the center of the fixed disc 300 along the spiral structure, a compression cavity 500 is formed between the fixed scroll plate 301 and the movable scroll plate 201, the compression cavity 500 is communicated with the suction port 101, refrigerant sucked from the suction port 101 enters the compression cavity 500, and the refrigerant is guided to the center of the fixed disc 300 along the side walls of the two scroll plates under the guiding action of the fixed scroll plate 301 and the movable scroll plate 201. An exhaust hole is formed at the center of the stationary disc 300 and is communicated with the exhaust port 401 to discharge the compressed refrigerant.

Because the compressor is in the low temperature environment, the situation of insufficient heating caused by small suction pressure, as shown in fig. 1-2, the back cover 400 is provided with the air supplement port 402, the air supplement device is arranged between the static disc 300 and the back cover 400, the air supplement port 402 is communicated with the air supplement device, the air supplement device is used for supplementing air to the static disc 300, and under the combined action of the air supplement port 402 and the air supplement device, the function of air intake supplement of the air supplement port 101 is realized, so that sufficient supply of an air source is ensured, the problem of insufficient heating in the low temperature environment is solved, and the working efficiency of the compressor is ensured.

In order to realize the air supplement device to supplement air to the static disc 300, it is preferable that, as shown in fig. 3, an injection hole 302 is provided at the bottom of the static scroll plate 301, and the air supplement device is communicated with the injection hole 302. The injection hole 302 is added at the bottom of the static scroll plate 301, and the air-supplementing refrigerant enters the compression cavity 500 through the injection hole 302, so that the compression of the secondary refrigerant is realized. It can be understood that, in the present embodiment, the size of the aperture of the injection hole 302 is not limited, and the aperture of the injection hole 302 can be adjusted according to the actual heating capacity requirement, so as to meet the user requirement.

Aiming at the problems of complex structure and poor air supply effect of the existing air supply component, the embodiment provides an air supply device for supplying air to a compressor. As shown in fig. 2 and 4, the air supplement device comprises a valve disc 1, an injection disc 2 and an injection valve plate 3, wherein the valve disc 1, the injection valve plate 3 and the injection disc 2 are sequentially overlapped and arranged inside a rear cover 400, and the rear cover 400 plays a role in accommodating and integrally supporting. An avoiding groove 21 (shown in fig. 5) is arranged on one side of the injection disc 2 close to the valve disc 1, a guide post 22 is convexly arranged on one side of the injection disc 2 far away from the valve disc 1, the guide post 22 is of a cylindrical structure, the guide post 22 is inserted into a static disc 300 of the compressor, the guide post 22 is preferably inserted into an injection hole 302 of the static disc 300,

as shown in fig. 2 and 4, an injection passage 221 is provided in the guide post 22. The injection valve plate 3 is arranged between the valve disc 1 and the injection disc 2 and is attached to the valve disc 1, the movable plate 31 is arranged on the injection valve plate 3, and the movable plate 31, the valve disc 1 and the avoidance groove 21 form a one-way valve structure. The valve disc 1 is provided with a through hole 11, an air supply inlet cavity 4 is formed among the rear cover 400, the valve disc 1 and the static disc 300, so that air entering from the air supply port 402 sequentially passes through the air supply inlet cavity 4, the through hole 11 and the one-way valve structure and enters the static disc 300 through the injection channel 221.

When gas is needed to be supplemented, the gas supplementing refrigerant enters the gas supplementing inlet cavity 4 through the gas supplementing opening 402 and flows into the through hole 11 of the valve disc 1, pressure difference exists between two sides of the injection valve plate 3, so that the movable plate 31 on the injection valve plate 3 is opened towards the direction of the injection disc 2, the gas supplementing refrigerant enters the injection disc 2, the gas supplementing refrigerant is guided into the injection hole 302 in the static disc 300 by the guide column 22 in the injection disc 2 and is injected into the compression cavity 500 through the injection hole 302 to be secondarily compressed. The direct butt joint mode of guide post 22 and quiet dish 300 is adopted, guarantees the reliability of tonifying qi refrigerant transmission. The injection channel 221 is arranged in the guide column 22, so that the optimization of a gas flow channel is realized, the injection channel 221 is of a linear structure, the bending of the air supplementing refrigerant in the flow process is reduced, the pressure drop is reduced, and the higher air supplementing efficiency is obtained.

Through being provided with in one side that sprays dish 2 and be close to valve disc 1 and dodge groove 21, dodge groove 21 and played the effect of dodging movable plate 31, the free end of movable plate 31 removes to the direction of keeping away from injection valve block 3, make the tonifying qi refrigerant that flows out from the via hole 11 of valve disc 1 can get into between movable plate 31 and the injection valve block 3, dodge groove 21 and provide the removal space for movable plate 31 to guarantee that movable plate 31 opens to the direction that is close to and sprays dish 2. Wherein, the tank bottom of avoiding the groove 21 is preferred to be provided with the slope of certain inclination, can play spacing effect to the opening size of activity piece 31. Set up between valve disc 1 and injection dish and laminate mutually with valve disc 1 through injection valve block 3, valve disc 1 plays limiting displacement to the opening direction of movable plate 31, if the free end of movable plate 31 removes to the direction that is close to valve disc 1, valve disc 1 is the flat structure, is difficult to provide the removal space for movable plate 31 can only open towards injection dish 2 direction, avoids the gas reverse flow in the compression chamber 500 to the tonifying qi chamber of admitting air 4 in. Compare with prior art's spring check valve, the check valve structure that activity piece 31, valve disc 1 and dodge groove 21 to form need not to set up parts such as spring, bolt, reduces spare part quantity and complexity, has simplified part structure and has reduced the cost, has improved sensitivity and stability simultaneously.

The air supplement port 402 is arranged on the rear cover 400 of the compressor, so that a part of medium-high pressure refrigerant in the system is directly led into the compression cavity 500 of the compressor through the air supplement device, the flow of the refrigerant is increased, and the compressor obtains higher heating capacity in a low-temperature environment.

Further, an exhaust high-pressure cavity 9 is arranged between the static disc 300 and the rear cover 400, the exhaust high-pressure cavity 9 is communicated with the exhaust port 401, and an exhaust hole communicated with the exhaust high-pressure cavity 9 is formed in the center of the static disc 300, so that gas gathered on the static disc 300 enters the exhaust high-pressure cavity 9 through the exhaust hole after the refrigerant compression is completed, and is finally exhausted from the exhaust port 401.

Because the quiet dish 300 not only has the exhaust high pressure chamber 9 with back lid 400 between, still has the tonifying qi and admit air chamber 4, in order to avoid appearing revealing between the two, this tonifying qi device still includes first sealing washer 5, and first sealing washer 5 cover is located on spouting the dish 2 and is located between the inner wall of spouting dish 2 and back lid 400. Radial seal between injection dish 2 and back lid 400 is realized to first sealing washer 5, and it is sealed to seal traditional sealed pad optimization for the sealing washer, has reduced sealed installation location of filling up and the spacing condition of axial, has increased assemblability, and need not to increase the axial pretightning force, reduces assembly precision demand and process, and sealed face need not to process the seal groove, and part structure is simple, and manufacturing procedure reduces. Meanwhile, the inner wall of the rear cover 400 is divided into the air supply inlet cavity 4 and the exhaust high-pressure cavity 9 by the first sealing ring 5, and the air supply inlet cavity 4 and the exhaust high-pressure cavity 9 are isolated by the first sealing ring 5.

Further, the air supply device further comprises a second sealing ring 6, and the second sealing ring 6 is sleeved on the guide column 22 and is positioned between the injection disc 2 and the static disc 300. The radial sealing of the sealing ring is adopted between the injection disc 2 and the static disc 300, the axial pretightening force does not need to be increased, the installation is more convenient, the sealing surface does not need to be processed into a sealing groove, the structure of parts is simple, and the processing procedures are reduced. Wherein, do not need axial rigidity spacing between injection dish 2 and quiet dish 300, do not adopt the mode of general bolt fastening.

First sealing washer 5 and second sealing washer 6 all adopt radial seal, do not have the axial seal pressure demand, have avoided bolt installation and bolt moment of torsion requirement, have reduced man-hour and detection process.

It can be understood that no sealing requirement exists between the injection valve plate 3 and the injection disc 2, so that parts are reduced, and the assembly performance is improved.

Further, this air supplement unit still includes jump ring 8, and jump ring 8 cover is located on spraying dish 2 and is located between spraying dish 2 and back lid 400 for it is spacing to spray the axial of dish 2. The spraying disc 2 and the rear cover 400 are axially limited by the clamp spring 8, and the requirement of axial pretightening force is avoided. Preferably, an annular groove is formed in the inner wall of the rear cover 400, the annular groove is used for mounting the clamp spring 8, a limiting step surface is formed in the outer wall of the injection disc 2, and the clamp spring 8 is inserted into the annular groove and abuts against the limiting step surface to limit the injection disc 2.

In order to ensure that the injection disc 2, the injection valve plate 3 and the valve disc 1 can be well positioned, the air supplementing device further comprises a positioning piece 7, wherein the positioning piece 7 is specifically a positioning pin, and the positioning piece 7 is respectively arranged on the injection disc 2, the injection valve plate 3 and the valve disc 1 in a penetrating manner to realize the positioning function. The injection disc 2 and the rear cover 400 are positioned by the two positioning pins, one end of each positioning pin is inserted into the rear cover 400, the other end of each positioning pin penetrates through the valve disc 1, the injection valve plate 3 and the injection disc 2, the positioning pins play a role in preventing dislocation, the installation angle is guaranteed, the possibility of dislocation in the assembly process is reduced, and then the pressure drop in an airflow channel is reduced.

Further, a movable gap is arranged between the movable plate 31 and the injection valve plate 3, and the movable gap is of a U-shaped structure, so that one end of the movable plate 31 is connected to the injection valve plate 3, and the other end of the movable plate is a free end, thereby forming a shape similar to a tongue. With such a structure, the movable piece 31 has certain elasticity and can move, and the opening and closing of the movable piece 31 are realized.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. An air supplement device for supplementing air of a compressor, wherein an air supplement port (402) is arranged on a rear cover (400) of the compressor, the air supplement device is characterized by comprising:

the valve disc (1) is arranged in the rear cover (400), and a through hole (11) is formed in the valve disc (1);

the injection disc (2) is arranged in the rear cover (400), an avoidance groove (21) is formed in one side, close to the valve disc (1), of the injection disc (2), a guide column (22) is convexly arranged on one side, far away from the valve disc (1), of the injection disc (2), the guide column (22) is inserted into a static disc (300) of the compressor, an injection channel (221) is arranged in the guide column (22), and an air supply and intake cavity (4) is formed among the rear cover (400), the valve disc (1) and the static disc (300);

injection valve block (3), its set up in between valve disc (1) and injection dish (2) and with valve disc (1) is laminated mutually injection valve block (3) are last to be provided with movable plate (31), movable plate (31) valve disc (1) reach dodge groove (21) and form the check valve structure, make the follow tonifying qi refrigerant that tonifying qi mouth (402) got into loops through tonifying qi admit air chamber (4), via hole (11) reach the check valve structure, and pass through injection passage (221) get into in quiet dish (300).

2. The gas supplementing device according to claim 1, characterized in that a movable gap is arranged between the movable plate (31) and the injection valve plate (3), and the movable gap is of a U-shaped structure.

3. The gas supplementing device according to claim 1, further comprising a first sealing ring (5), wherein the first sealing ring (5) is sleeved on the injection disk (2) and is located between the injection disk (2) and the inner wall of the rear cover (400).

4. The gas supplementing device according to claim 3, characterized in that the first sealing ring (5) divides the inner wall of the rear cover (400) into the gas supplementing inlet chamber (4) and the exhaust high pressure chamber (9).

5. The gas supplementing device according to claim 1, further comprising a second sealing ring (6), wherein the second sealing ring (6) is sleeved on the guide post (22) and is located between the injection disc (2) and the static disc (300).

6. The gas supplementing device according to claim 1, further comprising a positioning member (7), wherein the positioning member (7) is respectively arranged on the injection disc (2), the injection valve plate (3) and the valve disc (1) in a penetrating manner.

7. The air supplement unit according to claim 1, further comprising a clamp spring (8), wherein the clamp spring (8) is sleeved on the injection disc (2) and located between the injection disc (2) and the rear cover (400) for axial limiting of the injection disc (2).

8. The compressor is characterized by comprising a body (100), a movable disc (200), a static disc (300), a rear cover (400) and the air supplementing device as claimed in any one of claims 1 to 7, wherein the body (100) is provided with an air suction port (101), the movable disc (200) is arranged in the body (100), the movable disc (200) can rotate relative to the static disc (300), the air supplementing device is arranged between the static disc (300) and the rear cover (400), and the air supplementing device is used for supplementing air to the static disc (300).

9. The compressor according to claim 8, wherein a static scroll plate (301) is disposed on a side of the static disc (300) close to the movable disc (200), a movable scroll plate (201) is disposed on a side of the movable disc (200) close to the static disc (300), a compression chamber (500) is formed between the static scroll plate (301) and the movable scroll plate (201), and the compression chamber (500) is communicated with the suction port (101) and the air supply device.

10. The compressor according to claim 9, wherein an injection hole (302) is provided at the bottom of the fixed scroll (301), and the air supplement device is communicated with the injection hole (302).

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