CN221322705U - Scroll assembly, compressor and air conditioner - Google Patents

Abstract

The utility model relates to the technical field of compressors, and particularly discloses a vortex disc assembly, which comprises a static vortex disc and an movable vortex disc, wherein static disc teeth of the static vortex disc are matched with movable disc teeth of the movable vortex disc, the movable vortex disc can eccentrically rotate relative to the static vortex disc, a compression cavity is formed between the static disc teeth and the movable disc teeth, an exhaust cavity is arranged on the back surface of the static vortex disc, an exhaust hole is formed in the static vortex disc and is used for communicating the compression cavity and the exhaust cavity, an air baffle is arranged in the exhaust cavity and is positioned below the exhaust hole, the static vortex disc is further provided with an oil return channel communicated with the exhaust cavity, one end of the oil return channel communicated with the exhaust cavity is positioned below the air baffle, and the other end of the oil return channel extends to a static disc tooth top of the static disc teeth. The air baffle is arranged below the exhaust hole, one end of the oil return channel, which is communicated with the exhaust cavity, is positioned below the oil return channel, and most of high-pressure refrigerant is discharged from the exhaust hole and then blown onto the air baffle, so that the oil return channel below the air baffle can be provided with sufficient oil supply.

Description

Scroll assembly, compressor and air conditioner

Technical Field

The utility model relates to the technical field of compressors, in particular to a vortex disc assembly, a compressor and an air conditioner.

Background

Scroll assemblies are an important component in scroll compressors. The device comprises a pair of movable vortex disk and a fixed vortex disk, wherein the volumes of compression cavities formed by the movable disk teeth and the fixed disk teeth in the relative movement process are gradually reduced, so that the effect of compressing the refrigerant is achieved. In the gas compression process, the dynamic vortex plate and the static vortex plate are subjected to the action of gas force to generate a mutual separation trend due to the gradual rise of pressure. The mating surfaces of the two produce a tiny axial gap, and gas leaks from a high pressure position to a low pressure position through the axial gap, so that the performance of the compressor is affected.

In the prior art, an oil return structure of refrigerating machine oil is designed at an exhaust cavity of a fixed vortex disk, the refrigerating machine oil in the exhaust cavity is sent into a groove of a tooth top of the fixed vortex disk through pressure difference, and an axial gap of a contact surface of the two is sealed by utilizing an oil film. However, the device still has the following problems:

1. The high-pressure refrigerant entering the exhaust cavity directly blows the refrigerating machine oil in the exhaust cavity, so that the severe disturbance of the oil pool can be caused, the oil level of the oil pool is temporarily or continuously lower than the position of the oil return structure, and the sealing effect on the axial gap between the movable vortex disc and the fixed vortex disc is weakened or disabled.

2. There is a risk that the refrigerant and the refrigerating machine oil in the oil pool are not thoroughly separated due to the fact that the refrigerating machine oil in the oil pool is carried again by the refrigerant with high speed and high pressure and then discharged.

Disclosure of utility model

The utility model aims to provide a scroll assembly compressor and an air conditioner, which are used for solving the problem that the existing device is used for directly blowing refrigerating machine oil in a discharge cavity by a high-pressure refrigerant.

The utility model provides a vortex disc assembly, which comprises a static vortex disc and a movable vortex disc, wherein static disc teeth of the static vortex disc are matched with movable disc teeth of the movable vortex disc, the movable vortex disc can eccentrically rotate relative to the static vortex disc, a compression cavity is formed between the static disc teeth and the movable disc teeth, an exhaust cavity is arranged on the back surface of the static vortex disc, an exhaust hole is formed in the static vortex disc and is used for communicating the compression cavity with the exhaust cavity, a gas baffle is arranged in the exhaust cavity, the gas baffle is positioned below the exhaust hole, the static vortex disc is further provided with an oil return channel communicated with the exhaust cavity, one end of the oil return channel communicated with the exhaust cavity is positioned below the gas baffle, and the other end of the oil return channel extends to a static disc tooth top of the static disc teeth.

As the preferable technical scheme of the vortex disc assembly, an oil pool is formed at the bottom of the exhaust cavity, the oil pool is communicated with the oil return channel, and the air baffle is arranged above the oil pool.

As the preferable technical scheme of the vortex disc assembly, the fixed disc tooth top is provided with a vortex groove, and the other end of the oil return channel is communicated with the vortex groove.

As a preferable technical scheme of the scroll assembly, the other end of the oil return passage extends to the inner end position of the stationary disc tooth top.

As the preferable technical scheme of vortex disk subassembly, keep off the gas board and set up to rectangle structure and keep off the both ends of gas board and the inside wall formation clearance in exhaust chamber.

As the preferable technical scheme of vortex disk subassembly, keep off the air board and set up to protruding arc structure and keep off both ends of air board and the inside wall formation clearance of exhaust chamber.

As the preferable technical scheme of vortex disk subassembly, keep off the gas board and set up to triangle-shaped structure and keep off the both ends of gas board and the inside wall formation clearance in exhaust chamber.

The utility model provides a compressor, which comprises a compressor rear cover and a vortex disc assembly in any scheme, wherein the compressor rear cover is fixedly connected with the vortex disc assembly, and a gap exists between a gas baffle plate and the compressor rear cover.

As the preferable technical scheme of the compressor, a sealing ring is arranged between the vortex disc assembly and the compressor rear cover, and two ends of the sealing ring are respectively abutted with the vortex disc assembly and the compressor rear cover.

The utility model provides an air conditioner which comprises a condenser, an evaporator and a compressor in the scheme, wherein the output end of the condenser is connected with the input end of the evaporator, the input end of the condenser is connected with the output end of the compressor, and the output end of the evaporator is connected with the input end of the compressor.

The beneficial effects of the utility model are as follows:

The utility model provides a vortex disc assembly, which comprises a static vortex disc and a movable vortex disc, wherein static disc teeth of the static vortex disc are matched with movable disc teeth of the movable vortex disc, the movable vortex disc can eccentrically rotate relative to the static vortex disc, a compression cavity is formed between the static disc teeth and the movable disc teeth, an exhaust cavity is arranged on the back surface of the static vortex disc, an exhaust hole is formed in the static vortex disc and is used for communicating the compression cavity with the exhaust cavity, a gas baffle is arranged in the exhaust cavity, the gas baffle is positioned below the exhaust hole, the static vortex disc is further provided with an oil return channel communicated with the exhaust cavity, one end of the oil return channel communicated with the exhaust cavity is positioned below the gas baffle, and the other end of the oil return channel extends to a static disc tooth top of the static disc teeth. The air baffle is arranged below the exhaust hole, one end of the oil return channel, which is communicated with the exhaust cavity, is positioned below the oil return channel, and most of high-pressure refrigerant is discharged from the exhaust hole and then blown onto the air baffle, so that the oil return channel below the air baffle can be provided with sufficient oil supply.

Drawings

FIG. 1 is a cross-sectional view of a scroll assembly in accordance with an embodiment of the present utility model;

FIG. 2 is a front view of a fixed scroll in an embodiment of the present utility model;

FIG. 3 is a rear view of a fixed scroll in accordance with an embodiment of the present utility model;

FIG. 4 is a rear view of a fixed scroll in a second embodiment of the present utility model;

Fig. 5 is a rear view of a fixed scroll in the third embodiment of the present utility model.

In the figure:

1. A fixed scroll; 2. an exhaust chamber; 3. a gas baffle; 4. an oil return passage; 5. tooth tops of the static disc; 6. a vortex groove; 7. a movable disc tooth bottom; 8. a compressor rear cover; 9. a movable scroll; 10. an exhaust hole; 11. a compression chamber; 12. and (5) an oil pool.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Example 1

As shown in fig. 1-3, the utility model provides a vortex disc assembly, which comprises a static vortex disc 1 and a movable vortex disc 9, wherein the static disc teeth of the static vortex disc 1 are matched with the movable disc teeth of the movable vortex disc 9, the movable vortex disc 9 can eccentrically rotate relative to the static vortex disc 1, a compression cavity 11 is formed between the static disc teeth and the movable disc teeth, an exhaust cavity 2 is arranged on the back surface of the static vortex disc 1, an exhaust hole 10 is arranged on the static vortex disc 1, the exhaust hole 10 is used for communicating the compression cavity 11 and the exhaust cavity 2, a gas baffle 3 is arranged in the exhaust cavity 2, the gas baffle 3 is positioned below the exhaust hole 10, an oil return channel 4 communicated with the exhaust cavity 2 is also arranged on the static vortex disc 1, one end of the oil return channel 4 communicated with the exhaust cavity 2 is positioned below the gas baffle 3, and the other end of the oil return channel 4 extends to a static disc tooth top 5 of the static disc teeth. The air baffle plate 3 is arranged below the exhaust hole 10, one end of the oil return channel 4, which is communicated with the exhaust cavity 2, is positioned below the air baffle plate, and most of high-pressure refrigerant is discharged from the exhaust hole 10 and then blown onto the air baffle plate 3, so that the oil return channel 4 below the air baffle plate 3 can be provided with sufficient oil.

Further, as shown in fig. 1 to 2, as the orbiting scroll 9 eccentrically rotates with respect to the fixed scroll 1, the volume of the compression chamber 11 between the fixed and orbiting scroll teeth decreases, and thus the pressure of the refrigerant increases. The high-pressure refrigerant is mixed with the refrigerating machine oil, the refrigerating machine oil enters the exhaust cavity 2 from the exhaust hole 10, and after entering the exhaust cavity 2, the refrigerating machine oil is separated from the high-pressure refrigerant and deposited at the bottom of the exhaust cavity 2 to form an oil pool 12. The oil sump 12 is communicated with the oil return channel 4, namely, one end of the oil return channel 4, which is communicated with the exhaust cavity 2, is positioned below the oil surface of the oil sump 12, so that the oil sump 12 can always supply refrigerating machine oil to the oil return channel 4. In order to avoid the high-pressure refrigerant directly blowing the oil pool 12 to the greatest extent, the air baffle plate 3 is arranged above the oil pool 12, namely the oil surface of the oil pool 12 is always positioned below the air baffle plate 3. Most of the high-pressure refrigerant discharged from the exhaust hole 10 directly acts on the air baffle plate 3, and the disturbance to the oil pool 12 below the air baffle plate 3 is small, so that the oil supply of the oil pool 12 to the oil return channel 4 is ensured.

Still further, the stationary plate tooth top 5 is provided with a scroll 6, and the other end of the oil return passage 4 communicates with the scroll 6 provided with the stationary plate tooth top 5. Under the pressure of the exhaust cavity 2, the refrigerating machine oil in the oil sump 12 is pressed into the oil return passage 4, and enters the scroll 6 of the stationary disc tooth top 5 through the oil return passage 4. Along with the relative movement of the movable scroll 9 and the fixed scroll 1, the refrigerating machine oil fills the scroll groove 6 of the fixed scroll tooth crest 5, so that an oil film is formed between the movable scroll 9 and the fixed scroll 1 to seal the axial gap between the movable scroll 9 and the fixed scroll 1 and ensure the compression effect.

Specifically, in order that the refrigerator oil can more rapidly fill the scroll 6, the other end of the oil return passage 4 is provided at the center portion of the fixed scroll 1, that is, the other end of the oil return passage 4 extends to the inner end position of the fixed-scroll tip 5. It can be understood that the static disc teeth on the static vortex disc 1 are of vortex structures from inside to outside, the inner ends of the static disc teeth are positioned at the central part, and the outer ends of the static disc teeth are positioned at the edge parts. The other end of the oil return channel 4 extends to the inner end position of the outer end of the fixed disc tooth top 5, the refrigerating machine oil is outwards diffused along the vortex direction of the vortex groove 6, and the diffusion direction and the movement direction of the refrigerating machine oil are consistent in the eccentric rotation process of the movable vortex disc 9 relative to the fixed vortex disc 1, so that the vortex groove 6 can be filled with the refrigerating machine oil more quickly, and better sealing and lubricating effects can be obtained.

Further, as shown in fig. 1, since one end of the oil return passage 4 communicating with the oil pool 12 is farther from the center of the fixed scroll 1, and the other end communicating with the scroll groove 6 is closer to the center of the fixed scroll 1. Therefore, the oil return channel 4 is provided as a channel with bending, during machining, a first section of hole is machined at the position where the oil return channel 4 is communicated with the oil pool 12 along the direction towards the center of the fixed vortex disc 1, and a second section of hole is machined at the position where the other end of the oil return channel 4 corresponds to the tooth tip 5 of the fixed vortex disc along the axial direction of the fixed vortex disc 1, so that the first section of hole and the second section of hole are communicated and jointly form the oil return channel 4 with bending.

Alternatively, as shown in fig. 3, the air baffle 3 is provided in a rectangular structure. The length direction of the air baffle 3 is parallel to the oil surface of the oil pool 12, two ends of the air baffle 3 are close to the inner side wall of the exhaust cavity 2, and two ends of the air baffle 3 are respectively in clearance with the inner side wall of the exhaust cavity 2. The high-pressure refrigerant direct-blowing oil tank 12 is effectively avoided, and meanwhile, the separated refrigerating machine oil can be guaranteed to flow back into the oil tank 12 more rapidly through gaps formed between the two ends of the air baffle plate 3 and the inner side wall of the exhaust cavity 2, and the oil level of the oil tank 12 is guaranteed.

The present utility model provides a compressor, in particular a scroll compressor, comprising a compressor back cover 8 and a scroll assembly in this embodiment. The compressor rear cover 8 is fixedly connected with the fixed vortex disc 1 of the vortex disc assembly, a refrigerant output channel is arranged on the compressor rear cover 8, and the refrigerant output channel is communicated with the exhaust cavity 2 after the compressor rear cover 8 is connected with the fixed vortex disc 1. The position where the refrigerant output channel is communicated with the exhaust cavity 2 is located above the exhaust hole 10. A clearance along the axial direction of the fixed scroll 1 exists between the compressor rear cover 8 and the air baffle 3. When the compressor is in operation, high-pressure refrigerant is mixed with refrigerating machine oil, the refrigerating machine oil enters the exhaust cavity 2 from the exhaust port, the refrigerating machine oil is separated in the exhaust cavity 2, the refrigerating machine oil flows downwards to the oil pool 12, and the high-pressure refrigerant is discharged through the refrigerant output channel. A gap is arranged between the rear cover 8 of the compressor and the air baffle 3, so that the refrigerating machine oil can flow downwards along the inner side wall of the exhaust cavity 2 and also can flow downwards along the rear cover of the compressor. So that the speed of the return of the refrigerating machine oil is more rapid.

Optionally, in order to avoid leakage of refrigerating machine oil or refrigerant, a sealing ring is further arranged between the fixed scroll 1 and the rear cover 8 of the compressor, and an annular groove is arranged on the fixed scroll 1 for accommodating the sealing ring. When the fixed vortex disc 1 is connected with the compressor rear cover 8, two ends of the sealing ring are respectively abutted against the fixed vortex disc 1 and the compressor rear cover 8 so as to seal the fixed vortex disc 1 and the compressor rear cover 8. The sealing ring is preferably made of nitrile rubber.

The present utility model provides an air conditioner including a condenser, an evaporator, and a compressor in the present embodiment. The output of the condensing gas is connected with the input of the evaporator, the input of the condenser is connected with the output of the compressor, and the output of the evaporator is connected with the input of the compressor. Through setting up the compressor in this embodiment, guarantee the sealed effect of compressor movable vortex dish 9 and quiet vortex dish 1, guarantee the high-efficient operation of compressor, and then promote the heat exchange efficiency of air conditioner, reduce the energy consumption.

Example two

To avoid redundancy, this embodiment describes only the differences from the first embodiment. The present embodiment is different from the first embodiment in that: the structure of the air baffle 3 is arranged into an upward convex arc structure.

As shown in fig. 4, the air baffle 3 is provided in an upwardly convex arc-shaped structure. The direction of the chord length corresponding to the air baffle plate 3 with the arc-shaped structure is parallel to the oil surface of the oil pool 12, two ends of the air baffle plate 3 are close to the inner side wall of the exhaust cavity 2, and two ends of the air baffle plate 3 respectively form a gap with the inner side wall of the exhaust cavity 2. Effectively avoid high-pressure refrigerant to blow oil tank 12 directly simultaneously, owing to set up to upwards protruding, also can guarantee that the refrigerator oil of separation can form the clearance more quick backward flow to oil tank 12 through the both ends of keeping off gas board 3 respectively with the inside wall of exhaust chamber 2 to can not gather on keeping off gas board 3, guarantee the oil level height of oil tank 12.

Example III

To avoid redundancy, this embodiment describes only the differences from the first embodiment. The present embodiment is different from the first embodiment in that: the structure of the air baffle 3 is arranged into a triangle structure.

As shown in fig. 5, the air baffle 3 is provided in an isosceles triangle structure. The bottom edge of the triangular structure air baffle 3 is parallel to the oil surface of the oil pool 12, two ends of the air baffle 3 are close to the inner side wall of the exhaust cavity 2, and two ends of the air baffle 3 are respectively in clearance with the inner side wall of the exhaust cavity 2. The high-pressure refrigerant direct-blowing oil tank 12 is effectively avoided, and meanwhile, refrigerating machine oil can more rapidly flow back into the oil tank 12 through gaps formed between the two ends of the air baffle plate 3 and the inner side wall of the exhaust cavity 2 respectively under the guiding action of the side edges of the triangular structure, so that the oil level of the oil tank 12 is ensured.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A scroll assembly, comprising:

The device comprises a fixed vortex disc (1) and a movable vortex disc (9), wherein fixed disc teeth of the fixed vortex disc (1) are matched with movable disc teeth of the movable vortex disc (9), the movable vortex disc (9) can eccentrically rotate relative to the fixed vortex disc (1), and a compression cavity (11) is formed between the fixed disc teeth and the movable disc teeth;

The back of quiet vortex dish (1) is provided with exhaust chamber (2), be provided with exhaust hole (10) on quiet vortex dish (1), exhaust hole (10) are used for the intercommunication compression chamber (11) with exhaust chamber (2), be provided with in exhaust chamber (2) and keep off gas board (3), keep off gas board (3) are located the below of exhaust hole (10), quiet vortex dish (1) still be provided with oil return channel (4) of exhaust chamber (2) intercommunication, oil return channel (4) with the one end of exhaust chamber (2) intercommunication is located the below that keeps off gas board (3), the other end of oil return channel (4) extends to quiet dish tooth top (5).

2. The scroll assembly according to claim 1, wherein an oil sump (12) is formed at the bottom of the exhaust chamber (2), the oil sump (12) is in communication with the oil return passage (4), and the air baffle (3) is disposed above the oil sump (12).

3. A scroll assembly according to claim 2, wherein the stationary disc tooth top (5) is provided with a scroll groove (6), and the other end of the oil return passage (4) communicates with the scroll groove (6).

4. A scroll assembly according to claim 3, wherein the other end of the oil return passage (4) extends to a position of an inner end of the stationary disc tooth top (5).

5. A scroll assembly according to any one of claims 1-4, wherein the gas barrier (3) is provided in a rectangular configuration and both ends of the gas barrier (3) form a gap with the inner side wall of the exhaust chamber (2).

6. A scroll assembly according to any one of claims 1-4, wherein the gas barrier (3) is provided in an upwardly convex arc-shaped configuration and both ends of the gas barrier (3) form a gap with the inner side wall of the exhaust chamber (2).

7. A scroll assembly according to any one of claims 1-4, wherein the gas barrier (3) is arranged in a triangular configuration and both ends of the gas barrier (3) form a gap with the inner side wall of the exhaust chamber (2).

8. Compressor, comprising a compressor rear cover (8), characterized in that it further comprises a scroll assembly according to any one of claims 1-7, said compressor rear cover (8) being fixedly connected to said scroll assembly, a gap being present between said gas barrier (3) and said compressor rear cover (8).

9. Compressor according to claim 8, characterized in that a sealing ring is arranged between the scroll assembly and the compressor rear cover (8), both ends of the sealing ring being in abutment with the scroll assembly and the compressor rear cover (8), respectively.

10. An air conditioner comprising a condenser and an evaporator, wherein the output of the condenser is connected to the input of the evaporator, characterized in that the air conditioner further comprises a compressor according to any one of claims 8-9, wherein the input of the condenser is connected to the output of the compressor, and wherein the output of the evaporator is connected to the input of the compressor.