Scroll compressor and vehicle-mounted air conditioning system

Abstract

The utility model provides a scroll compressor and a vehicle-mounted air conditioning system, a separation pad is arranged in a shell of the scroll compressor, and the interior of the shell is divided into a first chamber and a second chamber by the separation pad; the first cavity is communicated with a refrigerant inlet in the shell, the second cavity is communicated with an air suction port of a compression unit in the scroll compressor, a communicating hole for communicating the first cavity with the second cavity is formed in the separation pad, and the communicating hole is located in the upper portion of the separation pad. The scroll compressor has the advantages that gas-liquid separation of refrigerants is realized, and a structure with gas-liquid separation capability is integrated in the scroll compressor, so that an external independent gas-liquid separator and a pipeline required for connecting the external gas-liquid separator and the scroll compressor are omitted; and the effects of simplifying the assembly process and reducing the occupied space of the vehicle-mounted air conditioning system are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a scroll compressor. The utility model also relates to a vehicle-mounted air-conditioning system with the scroll compressor. Background Art

[0002] The compressor is a fluid machine that boosts low-pressure gas to high-pressure gas. It plays an important role in the refrigeration system and is often called the heart of the refrigeration system.

[0003] In a vehicle's air conditioning and refrigeration system, under the control of the compressor controller, the refrigerant is compressed by the compressor and then flows into the condenser in the form of a high-temperature, high-pressure gas. After dissipating heat in the condenser, the refrigerant flows into the throttling capillary tube in the form of a low-temperature, high-pressure liquid. After passing through the throttling capillary tube, the refrigerant changes from a low-temperature, high-pressure liquid to a low-temperature, low-pressure liquid and flows into the evaporator. The refrigerant in the evaporator absorbs external heat, cooling the vehicle's air conditioning system, and then flows into the compressor in the form of a low-temperature, low-pressure gas, thus completing the refrigerant cycle in the air conditioning and refrigeration system. However, before the refrigerant is passed into the compressor, it must be passed into a gas-liquid separator to prevent liquid refrigerant from flowing into the compressor and causing compressor liquid hammer.

[0004] In the related art, it is necessary to first select a gas-liquid separator suitable for the compressor, and then connect the air intake of the compressor to the outlet of the gas-liquid separator. This arrangement results in more parts in the air-conditioning system, a more complicated assembly process, and the pipes connecting the compressor and the gas-liquid separator will take up a large space. Utility Model Content

[0005] In view of this, the present invention aims to provide a scroll compressor to reduce the space occupied by a vehicle air-conditioning system.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A scroll compressor, wherein a separator is provided in a housing of the scroll compressor, and the separator separates the housing into a first chamber and a second chamber;

[0008] The first chamber is connected to the refrigerant inlet on the shell, the second chamber is connected to the intake port of the compression unit in the scroll compressor, and a connecting hole connecting the first chamber and the second chamber is provided on the separation pad, and the connecting hole is located at the upper part of the separation pad.

[0009] Furthermore, the housing includes a first housing and a second housing butted together along the axial direction of the rotating shaft of the scroll compressor;

[0010] The separation pad is fixed between the first shell and the second shell, the first chamber is located in the first shell, the second chamber and the compression unit are located in the second shell, and the motor in the compression unit is located on the refrigerant flow path between the second chamber and the air intake of the compression unit.

[0011] Furthermore, one end of the rotating shaft passes through the separation pad and is rotatably mounted on the first shell; and / or,

[0012] The controller of the scroll compressor is mounted on the first housing.

[0013] Furthermore, a bearing portion arranged close to the separation pad is provided in the second shell;

[0014] One end of the rotating shaft is rotatably mounted on the bearing part, and the bearing part is provided with a gas-liquid separation structure connected with the communicating hole, and the bearing part is provided with a through hole connecting the gas-liquid separation structure with the second chamber.

[0015] Furthermore, the gas-liquid separation structure includes a gas-guiding flange provided in the bearing portion;

[0016] A U-shaped winding air intake channel is formed in the air guide flange. One end of the air intake channel is connected to the communicating hole through the inner cavity of the bearing portion, and the other end of the air intake channel is connected to the through hole.

[0017] Furthermore, the communicating hole and the end of the air suction channel communicating with the inner cavity of the bearing portion are both located at the top of the inner cavity of the bearing portion; and / or,

[0018] The communicating hole and the end of the air suction channel communicating with the inner cavity of the bearing portion are arranged on two sides of the air guide flange facing away from each other.

[0019] Furthermore, a liquid return hole is provided at the bottom of the air guide flange, and a reflux hole is provided on the separation pad, and the liquid return hole is connected to the first chamber through the reflux hole.

[0020] Furthermore, the shell is provided with an expansion cavity which is in communication with the first cavity;

[0021] The expansion cavity is located at the side or bottom of the shell, or the expansion cavity is an annular cavity arranged circumferentially around the shell.

[0022] Furthermore, the separation pad includes a main body made of a steel plate, and a rubber layer provided on at least one side surface of the main body.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The scroll compressor described in the present invention divides the space inside the shell into a first chamber and a second chamber by arranging a separator gasket inside the scroll compressor. When the refrigerant in a gas-liquid mixed state enters the shell from the refrigerant inlet, it first enters the first chamber, and the refrigerant in a gaseous state enters the second chamber from the connecting hole and enters the air intake of the compression unit, while the refrigerant in a liquid state is blocked in the first chamber by the action of the separator gasket. The above arrangement realizes the gas-liquid separation of the refrigerant, and the structure with gas-liquid separation capability is integrated inside the scroll compressor, thereby eliminating the need for an external separate gas-liquid separator and the pipeline required for connecting the external gas-liquid separator to the scroll compressor, which has the effect of simplifying the assembly process and reducing the space occupied by the vehicle air-conditioning system.

[0025] By arranging the separation gasket between the first shell and the second shell, it is convenient to assemble the compression unit and other components of the scroll compressor in the second chamber, and then the separation gasket is fixed and sealed to the first shell and the second shell, so as to facilitate the assembly of the scroll compressor; the motor in the compression unit is located on the refrigerant flow path and contacts the refrigerant, and heat exchange occurs between the motor and the refrigerant. When the weather is cold, the refrigerant absorbs the heat generated by the motor to prevent the gaseous refrigerant from being cooled and converted into liquid, thereby avoiding liquid hammer on the compression unit; when the weather is hot, the refrigerant absorbs the heat generated by the motor, further cooling the motor, thereby improving the stability of the motor operation.

[0026] By providing a rotating shaft extending through the separator, the first and second chambers are separated only by the separator. Heat generated by the motor of the compression unit in the second chamber is then transferred to the first chamber through the separator, thereby facilitating the conversion of the liquid refrigerant in the first chamber into a gaseous state, which then enters the air conditioning and refrigeration system. This reduces the likelihood of excessive accumulation of liquid refrigerant in the first chamber and improves the safety of the scroll compressor. When the controller is mounted on the first housing, the scroll compressor controller and the scroll compressor are integrated, further reducing the footprint of the vehicle air conditioning system.

[0027] By setting a bearing part and connecting one end of the rotating shaft to the bearing part, a gas-liquid separation structure is set between the separation pad and the bearing plate, so that the refrigerant after gas-liquid separation by the separation pad can be separated again by gas and liquid, and then passed to the air intake of the compression unit through the through hole to improve the separation ability of the liquid refrigerant, thereby reducing the possibility of the compression unit of the scroll compressor being subjected to liquid hammer.

[0028] By providing the air guide flange, the refrigerant, separated from the gas and liquid phases by the separator pad, passes through the connecting hole and enters the cavity formed by the carrier and the separator pad. It then enters the intake channel formed by the air guide flange and leads through the through hole to the intake port of the compression unit. The air guide flange and intake channel further separate the liquid refrigerant, reducing the possibility of liquid refrigerant entering the compression unit and causing liquid hammer in the scroll compressor, thereby improving the operational stability of the scroll compressor.

[0029] By setting the connecting hole and the end of the air intake channel connected to the inner cavity of the bearing part at the top of the cavity of the bearing part, the gas-liquid separation ability of the cavity for the refrigerant is improved, and the possibility of liquid refrigerant passing into the air intake channel is reduced, thereby improving the gas-liquid separation ability of the gas-liquid separation structure. On this basis, the connecting hole and the end of the air intake channel connected to the inner cavity of the bearing part are arranged back to back on both sides of the air guide flange. At this time, the refrigerant leading to the inner cavity from the connecting hole needs to first fill the inner cavity, and then enter the air intake channel from the entrance of the air intake channel. At this time, the refrigerant first contacts the outer edge of the air guide flange. If there is liquid refrigerant, the refrigerant first contacts the outer edge of the air guide flange and is deposited in the inner cavity, thereby further improving the gas-liquid separation ability of the air guide flange.

[0030] By opening a return liquid hole at the bottom end of the air guide flange and opening a reflux hole connecting the return liquid hole and the first chamber on the separation pad, the liquid refrigerant passing through the gas-liquid separation structure is returned to the first chamber, thereby avoiding the accumulation of liquid refrigerant in the intake channel, and further ensuring the gas-liquid separation capability of the gas-liquid separation structure.

[0031] By providing an expansion cavity communicated with the first chamber, the refrigerant accommodating capacity of the shell is improved, so that the scroll compressor is suitable for vehicle air-conditioning refrigeration systems of different specifications.

[0032] The separation pad has pressure bearing capacity by providing a main body made of a steel plate.

[0033] The utility model also provides a vehicle-mounted air-conditioning system, in which the scroll compressor as described above is provided.

[0034] The vehicle air-conditioning system described in the present invention eliminates the need for a gas-liquid separator to be arranged outside the scroll compressor by integrating the gas-liquid separator into the scroll compressor, and does not require the use of pipelines to connect the gas-liquid separator and the scroll compressor, thereby facilitating the layout and assembly of the vehicle air-conditioning system and reducing the space occupied by the vehicle air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0037] Figure 2 This is a parts diagram showing the separator pad according to the first embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram showing that the expansion cavity is located on one side of the housing according to the first embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram showing the expansion cavity surrounding the shell according to the first embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram showing that the expansion chamber is located at the lower part of the housing according to the first embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0042] Figure 7 For the second embodiment of the present utility model Figure 6 Cross-sectional view at AA in the middle;

[0043] Figure 8 For the second embodiment of the present utility model Figure 6 Cross-sectional view at the middle BB;

[0044] Figure 9 For the second embodiment of the present utility model Figure 6 Cross-sectional view at CC.

[0045] Description of reference numerals:

[0046] 1. Scroll compressor;

[0047] 2. Shell;

[0048] 2a, first chamber; 2b, second chamber; 2c, refrigerant inlet;

[0049] 201, first shell; 202, second shell;

[0050] 3. Separator pad;

[0051] 301, connecting hole; 302, reflux hole;

[0052] 3a, main body; 3b, rubber layer;

[0053] 4. Compression unit;

[0054] 401, motor;

[0055] 5. Rotating shaft;

[0056] 6. Controller;

[0057] 7. Bearing part;

[0058] 701, through hole;

[0059] 8. Gas-liquid separation structure;

[0060] 8a, air intake channel; 8b, inner cavity; 801, air guide flange; 8011, liquid return hole;

[0061] 9. Expansion cavity. DETAILED DESCRIPTION

[0062] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0063] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0064] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connection," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0065] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0066] Example 1

[0067] This embodiment relates to a scroll compressor, in which an external gas-liquid separator is integrated into the scroll compressor, reducing the space occupied by the pipes connecting the scroll compressor and the gas-liquid separator, thereby reducing the space occupied by the vehicle air-conditioning system.

[0068] In terms of overall structure, Figure 1As shown, a separation gasket 3 is provided in the shell 2 of the scroll compressor 1, and the separation gasket 3 divides the shell 2 into a first chamber 2a and a second chamber 2b; the first chamber 2a is connected to the refrigerant inlet 2c on the shell 2, and the second chamber 2b is connected to the intake port of the compression unit 4 in the scroll compressor 1, and a connecting hole 301 connecting the first chamber 2a and the second chamber 2b is provided on the separation gasket 3, and the connecting hole 301 is located at the upper part of the separation gasket 3.

[0069] By arranging a separation gasket 3 in the scroll compressor 1, the space inside the shell 2 is divided into a first chamber 2a and a second chamber 2b. When the refrigerant in a gas-liquid mixture enters the shell 2 from the refrigerant inlet 2c, it first enters the first chamber 2a, and the gaseous refrigerant enters the second chamber 2b from the connecting hole 301 and enters the air intake of the compression unit 4, while the liquid refrigerant is blocked in the first chamber 2a by the separation gasket 3. The above arrangement realizes the gas-liquid separation of the refrigerant, and the structure with gas-liquid separation capability is integrated inside the scroll compressor 1, thereby eliminating the need for an external separate gas-liquid separator and the pipeline required to connect the external gas-liquid separator to the scroll compressor 1, which has the effect of simplifying the assembly process and reducing the space occupied by the vehicle air-conditioning system.

[0070] Based on the above overall introduction, Figure 1 As shown, it can be understood that the communication hole 301 described in this embodiment is located above the separator 3. This means that when the scroll compressor 1 is assembled in the vehicle air conditioning system and fixed to the connecting components, the separator 3 is in a vertical position. At this time, the communication hole 301 is located above the separator 3 to reduce the possibility of liquid refrigerant passing through the communication hole 301 and entering the second chamber 2b, thereby blocking the liquid refrigerant. As an operative embodiment, the diameter of the communication hole 301 does not exceed 20 mm, and can be, for example, 11 mm, 13 mm, 15 mm, or 17 mm, with the preferred diameter being 15 mm.

[0071] The chamber of the shell 2 is divided into a first chamber 2a and a second chamber 2b based on the separation gasket 3, in order to facilitate the assembly of the scroll compressor 1; the shell 2 includes a first shell 201 and a second shell 202 that are connected together along the axial direction of the rotating shaft 5 of the scroll compressor 1; the separation gasket 3 is fixed between the first shell 201 and the second shell 202, the first chamber 2a is located in the first shell 201, the second chamber 2b and the compression unit 4 are located in the second shell 202, and the motor 401 in the compression unit 4 is located on the refrigerant flow path between the second chamber 2b and the intake port of the compression unit 4.

[0072] By arranging the separation gasket 3 between the first shell 201 and the second shell 202, it is convenient to assemble the compression unit 4 and other components of the scroll compressor 1 in the second chamber 2b, and then fix and seal the separation gasket 3 with the first shell 201 and the second shell 202, so as to facilitate the assembly of the scroll compressor 1; and, the motor 401 in the compression unit 4 is located on the refrigerant flow path and contacts the refrigerant, and the motor 401 and the refrigerant exchange heat. When the weather is cold, the refrigerant absorbs the heat generated by the motor 401 to prevent the gaseous refrigerant from being cooled and converted into liquid, thereby avoiding liquid hammer on the compression unit 4; when the weather is hot, the refrigerant absorbs the heat generated by the motor 401, further cooling the motor 401, thereby improving the operating stability of the motor 401.

[0073] As an implementable method, one end of the rotating shaft 5 passes through the separation pad 3 and is rotatably mounted on the first shell 201; the arrangement is such that the rotating shaft 5 is perpendicular to the separation pad 3, that is, after the scroll compressor 1 is assembled in the vehicle air-conditioning system, the connecting hole 301 is located above the rotating shaft 5; and the rotating shaft 5 passes through the separation pad 3 and is rotatably and sealedly connected to the separation pad 3. For example, the contact between the separation pad 3 and the rotating shaft 5 can be avoided by adjusting the gap between the rotating shaft 5 and the separation pad 3, and leakage of refrigerant between the separation pad 3 and the rotating shaft 5 can be prevented; or a sealed bearing is provided between the separation pad 3 and the rotating shaft 5 to realize the rotation and sealed connection of the rotating shaft 5 and the separation pad 3.

[0074] By setting the rotating shaft 5 to pass through the separation pad 3, the first chamber 2a and the second chamber 2b are separated only by the separation pad 3. At this time, the heat generated by the motor 401 of the compression unit 4 located in the second chamber 2b can be transferred to the first chamber 2a through the separation pad 3, thereby facilitating the liquid refrigerant in the first chamber 2a to be heated and converted into gaseous refrigerant, thereby entering the air-conditioning refrigeration system, reducing the possibility of excessive accumulation of liquid refrigerant in the first chamber 2a, and improving the safety of the scroll compressor 1.

[0075] On the basis that the shell 2 includes a first shell 201 and a second shell 202, in order to further reduce the space occupied by the vehicle air-conditioning system, a controller 6 of the scroll compressor 1 is installed on the first shell 201. When the controller 6 is installed on the first shell 201, the integration of the controller 6 of the scroll compressor 1 and the scroll compressor 1 is realized, further reducing the space occupied by the vehicle air-conditioning system.

[0076] In order to improve the capacity of the first chamber 2a to accommodate liquid refrigerant, Figures 1 to 5As shown, the shell 2 is provided with an expansion chamber 9 that is connected to the first chamber 2a; the expansion chamber 9 is located on the side or bottom of the shell 2, or the expansion chamber 9 is an annular chamber arranged circumferentially around the shell 2. By providing the expansion chamber 9 that is connected to the first chamber 2a, the refrigerant holding capacity in the shell 2 is improved, so that the scroll compressor 1 is suitable for vehicle air-conditioning refrigeration systems of different specifications. As an practicable manner, when the expansion chamber 9 is located on the side or bottom of the shell 2, the side or bottom surface of the expansion chamber 9 is flat. Such a setting can facilitate the expansion chamber 9 to abut against the vehicle air-conditioning system or other components of the vehicle, thereby improving the space utilization rate of the vehicle air-conditioning system.

[0077] As an implementable approach, Figures 1 to 2 As shown, the separator 3 includes a main body 3a made of steel plate and a rubber layer 3b provided on at least one side of the main body 3a. Preferably, the rubber layer 3b is provided on both sides of the main body 3a. The separator 3 is disposed between the first shell 201 and the second shell 202, connecting the first shell 201 and the second shell 202. The provision of the rubber layer 3b ensures a seal at the connection between the first shell 201 and the second shell 202 and provides the separator 3 with pressure-bearing capacity. The rubber material of the rubber layer 3b can be made from commonly available rubbers, such as natural rubber, styrene-butadiene rubber, or butyl rubber.

[0078] When the scroll compressor described in Example 1 of the present application is in use, after the refrigerant in a gas-liquid mixed state enters the shell 2 from the refrigerant inlet 2c, it first enters the first chamber 2a, and the gaseous refrigerant enters the second chamber 2b from the connecting hole 301 and enters the air intake of the compression unit 4, while the liquid refrigerant settles and is blocked in the first chamber 2a under the action of the separation pad 3; the above setting realizes the gas-liquid separation of the refrigerant, and the structure with gas-liquid separation capability is integrated inside the scroll compressor 1, thereby eliminating the need for an external separate gas-liquid separator and the pipeline required to connect the external gas-liquid separator to the scroll compressor 1, which has the effect of simplifying the assembly process and reducing the space occupied by the vehicle air-conditioning system.

[0079] Example 2

[0080] The difference between the second embodiment and the first embodiment is that Figures 6 to 9As shown, a support portion 7 is disposed within the second housing 202 and positioned adjacent to the separator pad 3. One end of the rotating shaft 5 is rotatably mounted on the support portion 7. A gas-liquid separation structure 8 is disposed within the support portion 7 and communicates with the communication hole 301. A through-hole 701 is also provided on the support portion 7, connecting the gas-liquid separation structure 8 with the second chamber 2b. By providing the support portion 7 and connecting one end of the rotating shaft 5 to the support portion 7, the gas-liquid separation structure 8 is disposed between the separator pad 3 and the support plate. This allows the refrigerant, after gas-liquid separation by the separator pad 3, to undergo further gas-liquid separation before being directed to the intake port of the compression unit 4 through the through-hole 701. This improves the separation capability of the liquid refrigerant and reduces the likelihood of liquid hammer in the compression unit 4 of the scroll compressor 1. In one embodiment, the diameter of the through-hole 701 does not exceed 20 mm, and may be, for example, 11 mm, 13 mm, 15 mm, or 17 mm, with a preferred diameter of 15 mm.

[0081] For the purpose of further separating the refrigerant passing through the connecting hole 301 into gas and liquid, as shown in FIG. Figures 7 to 9 As shown, as an implementable method, the gas-liquid separation structure 8 includes an air guide flange 801 provided in the bearing portion 7; a "U"-shaped and circuitous air intake channel 8a is formed in the air guide flange 801, and one end of the air intake channel 8a is connected to the connecting hole 301 through the inner cavity 8b of the bearing portion 7, and the other end of the air intake channel 8a is connected to the through hole 701.

[0082] By providing air guide flange 801, the refrigerant, separated from the gas and liquid phases of separator pad 3, passes through communication hole 301 and enters the cavity formed by bearing portion 7 and separator pad 3. It then enters intake channel 8a formed by air guide flange 801 and leads to the intake port of compression unit 4 via through-hole 701. The provision of air guide flange 801 and intake channel 8a further separates the liquid refrigerant. This reduces the possibility of liquid refrigerant entering compression unit 4 and causing liquid hammer in scroll compressor 1, thereby improving the operational stability of scroll compressor 1.

[0083] In order to improve the separation ability of the air guide flange 801 for the refrigerant, the connecting hole 301 and the end of the air intake channel 8a connected to the inner cavity 8b of the load-bearing part 7 are all located at the top of the inner cavity 8b of the load-bearing part 7; by arranging the connecting hole 301 and the end of the air intake channel 8a connected to the inner cavity 8b of the load-bearing part 7 at the top of the cavity of the load-bearing part 7, the gas-liquid separation ability of the cavity for the refrigerant is improved, and the possibility of liquid refrigerant passing into the air intake channel 8a is reduced, thereby improving the gas-liquid separation ability of the gas-liquid separation structure 8.

[0084] On this basis, a connecting hole 301 and one end of the air intake channel 8a communicating with the inner cavity 8b of the bearing portion 7 can be further provided, and arranged on both sides of the air guide flange 801 facing away from each other. The connecting hole 301 and one end of the air intake channel 8a communicating with the inner cavity 8b of the bearing portion 7 are arranged on both sides of the air guide flange 801 facing away from each other. In this case, the refrigerant flowing from the connecting hole 301 to the inner cavity 8b needs to first fill the inner cavity 8b, and then enter the air intake channel 8a through the entrance of the air intake channel 8a. In this case, the refrigerant first contacts the outer edge of the air guide flange 801. If liquid refrigerant is present, the refrigerant first contacts the outer edge of the air guide flange 801 and is deposited in the inner cavity 8b, thereby further improving the gas-liquid separation capability of the air guide flange 801.

[0085] In order to return the liquid refrigerant passing through the gas-liquid separation structure 8 to the first chamber 2a, a liquid return hole 8011 is provided at the bottom of the gas guide flange 801, and a return hole 302 is provided on the separator 3. The liquid return hole 8011 communicates with the first chamber 2a through the return hole 302. By providing the liquid return hole 8011 at the bottom end of the gas guide flange 801 and providing the return hole 302 on the separator 3 connecting the liquid return hole 8011 and the first chamber 2a, the liquid refrigerant passing through the gas-liquid separation structure 8 is returned to the first chamber 2a, thereby preventing the accumulation of liquid refrigerant in the intake passage 8a and further ensuring the gas-liquid separation capability of the gas-liquid separation structure 8.

[0086] As a preferred practicable method, the diameter of the liquid return hole 8011 and the reflux hole 302 is no greater than 2 mm, and can be, for example, 1.6 mm, 1.8 mm, or 1.9 mm, with 2 mm being preferred. When the diameter of the liquid return hole 8011 and the reflux hole 302 is set to be no greater than 2 mm, the liquid refrigerant can flow back to the first chamber 2a through the reflux hole 302 and the liquid return hole 8011, while preventing the refrigerant in the first chamber 2a from flowing back into the air intake passage 8a due to the excessive opening. Of course, as another practicable method, the diameter of the liquid return hole 8011 and the reflux hole 302 can be greater than 2 mm, which can satisfy the requirement that the liquid refrigerant is discharged from the liquid return hole 8011 out of the air guide flange 801 and that the refrigerant flows from the reflux hole 302 into the first chamber 2a.

[0087] When the scroll compressor described in Example 2 of the present application is in use, after the refrigerant passes through the connecting hole 301 from the first chamber 2a and enters the air intake of the compression unit 4, it is again separated into gas and liquid by the gas-liquid separation structure 8. After the gas-liquid separation by the separation pad 3, the refrigerant passes through the connecting hole 301 and enters the cavity formed by the support portion 7 and the separation pad 3, enters the air intake channel 8a formed by the air guide flange 801, and is led to the air intake of the compression unit 4 through the through hole 701. The provision of the air guide flange 801 and the air intake channel 8a further separates the liquid refrigerant. This reduces the possibility of the scroll compressor 1 suffering from liquid hammer due to the liquid refrigerant passing through the compression unit 4, thereby improving the operating stability of the scroll compressor 1.

[0088] Example 3

[0089] This embodiment relates to a vehicle air-conditioning system, in which the scroll compressor 1 as described above is provided.

[0090] The vehicle air-conditioning system described in the present invention eliminates the need for a gas-liquid separator provided outside the scroll compressor 1 by integrating the gas-liquid separator into the scroll compressor 1, and does not require the use of pipelines to connect the gas-liquid separator and the scroll compressor 1, thereby facilitating the layout and assembly of the vehicle air-conditioning system and reducing the space occupied by the vehicle air-conditioning system.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A scroll compressor, characterized in that: A separation gasket (3) is provided in the housing (2) of the scroll compressor (1), and the separation gasket (3) separates the housing (2) into a first chamber (2a) and a second chamber (2b); The first chamber (2a) is connected to the refrigerant inlet (2c) on the shell (2), the second chamber (2b) is connected to the air intake of the compression unit (4) in the scroll compressor (1), and a connecting hole (301) connecting the first chamber (2a) and the second chamber (2b) is provided on the separation pad (3), and the connecting hole (301) is located at the upper part of the separation pad (3).

2. The scroll compressor according to claim 1, wherein: The housing (2) comprises a first housing (201) and a second housing (202) butted together along the axial direction of the rotating shaft (5) of the scroll compressor (1); The separation pad (3) is fixed between the first shell (201) and the second shell (202), the first chamber (2a) is located in the first shell (201), the second chamber (2b) and the compression unit (4) are located in the second shell (202), and the motor (401) in the compression unit (4) is located on the refrigerant flow path between the second chamber (2b) and the air intake of the compression unit (4).

3. The scroll compressor according to claim 2, wherein: One end of the rotating shaft (5) passes through the separation pad (3) and is rotatably mounted on the first shell (201); and / or, The controller (6) of the scroll compressor (1) is mounted on the first housing (201).

4. The scroll compressor according to claim 2, wherein: A bearing portion (7) is provided in the second shell (202) and is arranged close to the separation pad (3); One end of the rotating shaft (5) is rotatably mounted on the bearing portion (7), and a gas-liquid separation structure (8) communicating with the communicating hole (301) is provided in the bearing portion (7), and a through hole (701) communicating the gas-liquid separation structure (8) with the second chamber (2b) is provided on the bearing portion (7).

5. The scroll compressor according to claim 4, wherein: The gas-liquid separation structure (8) comprises a gas-guiding flange (801) provided in the bearing portion (7); A U-shaped winding air intake channel (8a) is formed in the air guide flange (801), one end of the air intake channel (8a) is connected to the communication hole (301) through the inner cavity (8b) of the bearing portion (7), and the other end of the air intake channel (8a) is connected to the through hole (701).

6. The scroll compressor according to claim 5, wherein: The communicating hole (301) and the end of the air suction channel (8a) communicating with the inner cavity (8b) of the bearing portion (7) are both located at the top of the inner cavity (8b) of the bearing portion (7); and / or, The communicating hole (301) and one end of the air suction channel (8a) communicating with the inner cavity (8b) of the bearing portion (7) are arranged on both sides of the air guide flange (801) facing away from each other.

7. The scroll compressor according to claim 5, wherein: A liquid return hole (8011) is provided at the bottom of the air guide flange (801), a reflux hole (302) is provided on the separation pad (3), and the liquid return hole (8011) is communicated with the first chamber (2a) through the reflux hole (302).

8. The scroll compressor according to claim 1, wherein: The housing (2) is provided with an expansion chamber (9) in communication with the first chamber (2a); The expansion cavity (9) is located at the side or bottom of the shell (2), or the expansion cavity (9) is an annular cavity circumferentially arranged around the shell (2).

9. The scroll compressor according to any one of claims 1 to 8, characterized in that: The separation pad (3) comprises a main body (3a) made of a steel plate, and a rubber layer (3b) provided on at least one side surface of the main body (3a).

10. A vehicle air conditioning system, characterized in that: The vehicle air-conditioning system is provided with the scroll compressor according to any one of claims 1 to 9.

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