Compressor shell and compressor

Abstract

The utility model provides a compressor shell and a compressor. The compressor shell comprises a shell body with a containing cavity, a partition piece and a heating piece. The containing cavity is divided into a first cavity body and a second cavity body which are sequentially arranged along the flowing path of the refrigerant by the partition part, the first cavity body is used for installing the motor assembly, the second cavity body is used for installing the compression assembly, the installed compression assembly can divide the second cavity body into an isolation cavity and a compression cavity, the isolation cavity is close to the first cavity body, and the compression cavity is close to the second cavity body. A vent hole used for communicating the first cavity with the isolation cavity is formed in the partition piece, a refrigerant can pass through the vent hole, and the heating piece is arranged in the isolation cavity. According to the compressor shell, refrigerants are heated through the heating piece in winter, the exhaust temperature of the compressor is increased, the heating capacity and comfort of the compressor are improved, when liquid impact happens to the compressor, the heating piece can also facilitate gasification of the liquid refrigerants, the problem of liquid impact is solved, and the compressor shell is suitable for being used for the compressor. And the reliability of the compressor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, and in particular to a compressor housing; at the same time, the utility model also relates to a compressor provided with the compressor housing. Background Art

[0002] In the existing technology, the housing of the electric compressor is equipped with three parts: a controller, a motor assembly, and a compression assembly. The controller drives the motor assembly to rotate, driving the compression assembly to do work, and promoting the circulation of the refrigerant in the air-conditioning system. The refrigerant flows in from the air inlet on the housing, passes through the side of the controller and the motor, and then flows into the air intake of the compression assembly for compression, thereby increasing the pressure and temperature of the refrigerant.

[0003] When a heat pump operates in winter, the evaporator is located outside the vehicle. Due to the low ambient temperature, suction pressure and temperature are low, gas density is also low, and compressor input power is also low. This results in low compressor exhaust flow and temperature, resulting in insufficient heating capacity, which in turn affects air conditioning comfort. Furthermore, when frost forms on the evaporator surface, its surface thermal resistance increases, making it difficult for the refrigerant to absorb heat from the environment. As a result, the liquid refrigerant flowing into the evaporator from the expansion valve is unable to absorb heat and evaporates into gas. This forces the compressor to directly draw in liquid refrigerant, which can easily cause liquid hammer, affecting compressor reliability. Utility Model Content

[0004] In view of this, the present invention aims to provide a compressor housing to improve the performance of the compressor.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A compressor housing comprises a shell body having a cavity, and a partition and a heating element arranged in the cavity; the partition divides the cavity into a first cavity and a second cavity arranged in sequence along the flow path of the refrigerant, the first cavity is used to install a motor assembly, and the second cavity is used to install a compression assembly, and the installed compression assembly can separate the second cavity into an isolation cavity and a compression cavity, the isolation cavity is close to the first cavity, and an air vent for connecting the first cavity and the isolation cavity is provided on the partition, and the air vent can allow the refrigerant to pass through; the heating element is arranged in the isolation cavity for heating the refrigerant.

[0007] Furthermore, it also includes a guide structure, which is used to guide the liquid refrigerant in the isolation cavity to the first cavity to cool the motor assembly in the first cavity.

[0008] Furthermore, the diversion structure includes a diversion channel provided below the first cavity, and a diversion hole provided at the bottom of the partition, and the diversion hole is used to connect the diversion channel and the isolation cavity.

[0009] Furthermore, a liquid blocking portion is provided in the isolation cavity and is located between the vent hole and the heating element. The liquid blocking portion is used to block the liquid refrigerant flowing into the vent hole from flowing toward the heating element.

[0010] Furthermore, the ventilation holes are in an arc shape extending along the circumference of the partition; and / or, the ventilation holes are multiple and spaced apart along the circumference of the partition.

[0011] Furthermore, the vent hole is provided at the top of the partition; and / or the heating element is provided with a temperature detection portion for detecting the temperature of the heating element.

[0012] Furthermore, there is one heating element, and the heating element is in a ring shape arranged along the circumference of the isolation cavity, or there are multiple heating elements arranged at intervals along the circumference of the isolation cavity.

[0013] Furthermore, the shell body includes a first part, a second part and a third part connected in sequence; the first part and the second part form the first cavity, the second part and the third part form the second cavity, and the compression assembly is arranged in the third part, and the partition and the heating element are arranged in the second part.

[0014] Furthermore, the separator and the second part are integrally formed.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The compressor housing of this utility model uses a partition to separate the volume into a first cavity and a second cavity. The compression assembly divides the second cavity into an isolation cavity and a compression cavity. A heater is provided in the isolation cavity. In winter, the heater heats the refrigerant, thereby increasing the compressor's exhaust temperature. The partition also reduces the heater's impact on the motor assembly, thereby improving the compressor's heating capacity and comfort. If evaporator frosting causes liquid hammer in the compressor, the heater can also help vaporize the liquid refrigerant, thereby alleviating the problem of liquid hammer and further improving the compressor's reliability.

[0017] In addition, the liquid refrigerant in the isolation cavity is diverted to the first cavity through the diversion structure to cool the motor assembly, which is beneficial to improving the performance of the motor assembly and also beneficial to the vaporization of the liquid refrigerant, thereby further improving the problem of liquid hammer. The structure of the diversion channel and the road hole is simple and easy to arrange and implement. By providing a liquid blocking portion, it is beneficial to prevent the liquid refrigerant from blowing directly onto the heating element, thereby improving the heating efficiency of the gaseous refrigerant and reducing the probability of liquid refrigerant flowing into the compression assembly. The arc-shaped vent has the advantages of simple structure and easy implementation; the ventilation efficiency of multiple vents is high.

[0018] Furthermore, the placement of a vent hole at the top of the separator reduces the passage of liquid refrigerant. A temperature sensor monitors the temperature of the heating element, providing a basis for adjusting the heating element's operating status. A single, ring-shaped heating element improves refrigerant heating efficiency; combining multiple heating elements further enhances heating efficiency. The arrangement of the first, second, and third sections facilitates the arrangement and installation of the separator and heating element. The integral molding of the separator and second section improves processing efficiency and provides superior connection strength.

[0019] In addition, another object of the present invention is to provide a compressor comprising the compressor housing as described above.

[0020] The compressor of the present invention is advantageous in improving the performance of the compressor by providing the compressor housing as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 This is a schematic structural diagram of the compressor housing according to an embodiment of the present utility model in a use state;

[0023] Figure 2 This is a schematic structural diagram of a compressor housing according to an embodiment of the present utility model;

[0024] Figure 3 A cross-sectional view of the separator and the second part according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic structural diagram of the separator described in an embodiment of the present utility model.

[0026] Description of reference numerals:

[0027] 1. Shell body; 2. Motor assembly; 3. Compression assembly; 4. Rotating shaft; 5. Heating element; 6. Separator;

[0028] 100, first cavity; 200, second cavity; 300, third cavity;

[0029] 101, first part; 1011, flow guide channel; 102, second part; 1021, liquid blocking part; 103, third part;

[0030] 201, isolation chamber; 202, compression chamber;

[0031] 301. Medium body;

[0032] 600, separation groove; 601, ventilation hole; 602, guide hole; 603, installation groove; 604, annular protrusion; 605, separation rib; 606, connection protrusion. DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "back" appear, they are based on the orientations 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.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0036] The present embodiment relates to a compressor housing, which is used to improve the problems of low exhaust temperature and liquid hammer in the compressor in the prior art in winter.

[0037] The compressor housing comprises a housing 1 with a cavity, a partition 6 and a heater 5 disposed within the cavity. The partition 6 divides the cavity into a first cavity 100 and a second cavity 200, arranged sequentially along the refrigerant flow path. The first cavity 100 houses the motor assembly 2, while the second cavity 200 houses the compression assembly 3. Once installed, the compression assembly 3 divides the second cavity 200 into an isolation cavity 201 and a compression cavity 202. The isolation cavity 201 is adjacent to the first cavity 100, and a vent 601 is provided on the partition 6 to connect the first cavity 100 and the isolation cavity 201. The vent 601 allows refrigerant to pass through. The heater 5 is disposed within the isolation cavity 201 to heat the refrigerant.

[0038] The compressor housing described in this embodiment has a partition 6 that divides the chamber into a first cavity 100 and a second cavity 200. The compression assembly 3 divides the second cavity 200 into an isolation cavity 201 and a compression cavity 202. A heater 5 is provided in the isolation cavity 201. In winter, the heater 5 heats the refrigerant, which helps increase the compressor's exhaust temperature. The partition 6 also reduces the heater 5's impact on the motor assembly 2, thereby improving the compressor's heating capacity and comfort. If evaporator frosting causes liquid hammer in the compressor, the heater 5 can also help vaporize the liquid refrigerant, thereby improving the liquid hammer problem and enhancing the compressor's reliability.

[0039] Based on the above introduction, the structure of the compressor housing in this embodiment is as follows Figure 1 and Figure 2 As shown in Figure 1 and Figure 2 Based on the diagram in FIG, the compressor's air inlet is located at the left end of the entire housing 1, and the air outlet is located at the right end of the housing 1. Refrigerant flows from left to right after entering through the air inlet. In winter, the cooler refrigerant is heated by the heater 5 in the isolation chamber 201, which helps to raise the temperature of the refrigerant flowing into the compression assembly 3, thereby increasing the exhaust temperature of the refrigerant after compression by the compression assembly 3.

[0040] The compressor's rotating shaft 4 passes through the first cavity 100 and the second cavity 200 to transmit the rotational drive force output by the motor assembly 2 to the movable scroll in the compression assembly 3. A bearing is provided on the partition 6, and the rotating shaft 4 passes through the bearing on the partition 6 to rotate relative to the partition 6.

[0041] As a preferred embodiment, refer to Figure 2 and Figure 3 As shown in , the housing body 1 in this embodiment includes a first portion 101, a second portion 102, and a third portion 103 connected in sequence. The first portion 101 and the second portion 102 enclose a first cavity 100, and the second portion 102 and the third portion 103 enclose a second cavity 200. The compression assembly 3 is disposed within the third portion 103, and the partition 6 and the heating element 5 are disposed within the second portion 102. The arrangement of the first portion 101, the second portion 102, and the third portion 103 facilitates the arrangement and installation of the partition 6 and the heating element 5.

[0042] Among them, the middle body 301 in the compression assembly 3 is located between the third part 103 of the second part 102, and the second cavity 200 is divided into the above-mentioned isolation cavity 201 and compression cavity 202 by the middle body 301. Here, the various parts in the shell body 1 and the middle body 301 can be connected by connecting parts, as long as the connection requirements between the various components are met. In some embodiments, the partition 6 and the second part 102 are integrally formed. This not only helps to improve processing efficiency, but also makes the partition 6 and the second part 102 have better connection strength, and also helps to improve the assembly efficiency of the compressor housing. In other embodiments, the partition 6 and the second part 102 can also be processed and formed separately, and then the partition 6 is installed on the second part 102, which can also meet the use requirements.

[0043] like Figure 2 As shown in , as a preferred arrangement, the partition 6 and the heating element 5 are spaced apart in the axial direction of the shell body 1. This further increases the spacing between the heating element 5 and the motor assembly 2, further preventing the motor assembly 2 from being heated by the heating element 5 and affecting its performance. Considering that a gas-liquid mixed refrigerant is easily introduced into the air inlet during winter, this embodiment allows the refrigerant to flow into the isolation chamber 201 only through the vent 601, which helps reduce the amount of liquid refrigerant flowing into the isolation chamber 201. Even if liquid refrigerant does flow in, it can be vaporized by the heating element 5, thereby improving the impact of liquid hammer.

[0044] As a preferred embodiment, the vent hole 601 is provided on the top of the partition 6, which helps to further reduce the flow of liquid refrigerant into the isolation chamber 201. Figure 4 As shown in FIG, the vent holes 601 are arc-shaped and extend along the circumference of the separator 6. The arc-shaped vent holes 601 have the advantages of simple structure and ease of implementation, and also facilitate increasing the area of ​​each vent hole 601. Furthermore, multiple vent holes 601 are spaced apart along the circumference of the separator 6. The combined ventilation efficiency of multiple vent holes 601 is higher. For example, three vent holes 601 are spaced apart at the top of the separator 6. Of course, in actual implementation, the shape and number of vent holes 601 can also be adaptively adjusted according to usage requirements.

[0045] To facilitate the installation of the bearing on the separator 6, as shown Figure 3 and Figure 4 As shown in FIG, an annular protrusion 604 extending circumferentially and outwardly is provided on the side of the separator 6 facing the first cavity 100. The annular protrusion 604 is surrounded by a mounting groove 603 for mounting a bearing. In the installed state, a groove is formed between the shell body 1, the separator 6, and the annular protrusion 604, located outside the annular protrusion 604.

[0046] To enhance the structural strength of the separator 6, a plurality of dividing ribs 605 are provided circumferentially within the tank body, connecting the annular protrusion 604 and the shell body 1. The ribs 605 divide the tank body into a plurality of dividing slots 600. The aforementioned vents 601 are located at the bottom of each of the top dividing slots 600. The placement of the vents 601 at the bottom of the dividing slots 600 allows the dividing slots 600 to collect refrigerant, thereby improving refrigerant ventilation efficiency at the vents 601.

[0047] As a preferred embodiment, a liquid barrier 1021 is provided in the isolation chamber 201 between the vent 601 and the heating element 5. The liquid barrier 1021 is used to prevent the liquid refrigerant flowing into the vent 601 from flowing toward the heating element 5. In specific use, the refrigerant flowing in from the vent 601 will first be blown onto the liquid barrier 1021. At this time, the gaseous refrigerant will continue to flow backward after bypassing the liquid barrier 1021, while the liquid refrigerant will be blocked by the liquid barrier 1021 and will gather and drip to the bottom of the isolation chamber 201 during the downward flow. The liquid barrier 1021 here helps prevent the liquid refrigerant from blowing directly toward the heating element 5, thereby improving the heating efficiency of the heating element 5 for the gaseous refrigerant and reducing the probability of the liquid refrigerant flowing into the compression assembly 3.

[0048] As an example of a structure of the liquid blocking portion 1021, Figure 3 As shown in , the liquid-blocking portion 1021 includes a liquid-blocking protrusion that is arranged on the second part 102 and is convex inwardly convex in the radial direction. The liquid-blocking protrusions are multiple and correspond to the vent holes 601. In order to ensure the use effect of the liquid-blocking portion 1021, the projection of the vent hole 601 in the axial direction of the shell body 1 is located on the liquid-blocking protrusion. The liquid-blocking protrusion here has the advantages of simple structure, easy molding and good liquid-blocking effect. Of course, the liquid-blocking portion 1021 can also be arranged on the partition 6, or part of the liquid-blocking portion 1021 can be arranged on the second part 102, and the other part of the liquid-blocking portion 1021 can be arranged on the partition 6, as long as the liquid-blocking requirements are met.

[0049] like Figure 2 and Figure 3 As shown in FIG, in this embodiment, there is only one heating element 5, which is annular and arranged along the circumference of the isolation chamber 201. Providing a single annular heating element 5 facilitates layout and implementation, and increases the contact area with the refrigerant, thereby improving the refrigerant heating efficiency. In specific implementations, the heating element 5 can be a PTC, electric heating wire, induction heating tube, or other heating device.

[0050] To facilitate installation of the heater 5, a protruding connecting protrusion 606 is provided on the side of the partition 6 facing the isolation chamber 201. The heater 5 can be secured to the connecting protrusion 606 via a connector. The power lead for the heater 5 can be drawn from the side or end of the housing 1 and directly connected to the controller within the housing 1. A third cavity 300 is provided on the housing 1, located on the other side of the first cavity 100, relative to the second cavity 200. This third cavity 300 is used to mount the controller.

[0051] In this embodiment, the heating element 5 is provided with a temperature detection unit for detecting the temperature of the heating element 5. The temperature detection unit here can be electrically connected to the controller, and the temperature detected by the temperature detection unit is transmitted to the controller, which controls the operating state of the heating element 5 according to demand. For example, the controller can adjust the power and temperature of the heating element 5 to prevent the heating element 5 from burning due to excessive temperature, and the temperature in the isolation chamber 201 and the exhaust temperature from being too high. It also helps to prevent the heating element 5 from being too low, resulting in poor heating effect. The temperature detection unit here can adopt a product with temperature detection function, such as a temperature sensor.

[0052] It is understandable that the heating element 5 in this embodiment can also be provided in the isolation cavity 201, and a plurality of heating elements 5 are arranged at intervals along the circumference of the isolation cavity 201. In this case, the cooperation of multiple heating elements 5 is also conducive to improving the heating efficiency of the refrigerant. In addition, the maximum power of the heating element 5 can be selected according to the use requirements, for example, the maximum power of the heating element 5 is 2KW to 8KW. At the same time, the heating power of the heating element 5 can be continuously adjusted or adjusted in steps, as long as the use requirements are met. In this embodiment, the temperature detection part can also be directly provided in the isolation cavity 201, or on the power line electrically connected to the heating element 5, and the actual temperature of the heating element 5 can also be collected at this time.

[0053] In addition, to facilitate the reuse of the liquid refrigerant collected at the bottom of the isolation chamber 201, the compressor housing in this embodiment also includes a diversion structure for directing the liquid refrigerant in the isolation chamber 201 to the first cavity 100 to cool the motor assembly 2 within the first cavity 100. The absorption of heat generated by the motor assembly 2 by the liquid refrigerant not only helps to reduce the temperature of the motor assembly 2 and improve the performance of the motor assembly 2, but also facilitates the vaporization of the liquid refrigerant, thereby further improving the problem of liquid hammer.

[0054] As a preferred embodiment, Figure 2 and Figure 3As shown in , the flow guide structure includes a flow guide channel 1011 provided below the first cavity 100, and a flow guide hole 602 provided at the bottom of the partition 6. The flow guide hole 602 is used to connect the flow guide channel 1011 with the isolation cavity 201. The flow guide channel 1011 is provided at the bottom of both the first part 101 and the second part 102, and extends along the length direction of the shell body 1. The right end of the flow guide channel 1011 is connected to the flow guide hole 602, and the left end is located at the left end of the first cavity 100. This is conducive to extending the length of the flow guide channel 1011 and facilitating the transport of liquid refrigerant between the motor assembly 2 and the controller, thereby also absorbing the heat of the control box. The flow guide channel 1011 and the flow guide hole 602 in this embodiment have simple structures and are easy to arrange and implement.

[0055] It should be noted that, to facilitate the flow of liquid refrigerant from the guide hole 602 into the guide channel 1011 by its own gravity and to flow along the guide channel 1011, the guide channel 1011 is arranged obliquely along the length direction of the shell body 1. That is, the distance between the guide channel 1011 and the centerline of the shell body 1 is gradually increased in the direction away from the partition 6. In addition, the guide channel 1011 in this embodiment can be formed on the shell body 1, or a separate liquid guide tube can be used. As a structural example, in this embodiment, the diameter of the guide hole 602 is 0.5mm to 3mm, for example, the diameter of the guide hole 602 is 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, or 3mm.

[0056] The compressor housing of this embodiment optimizes the structure of the shell body 1 and provides a partition 6 and a heating element 5. When used in winter, the heating element 5 can be started to heat the liquid and gaseous refrigerant entering the isolation chamber 201, so that more liquid is heated and evaporated into gas, and the temperature of the refrigerant flowing into the suction port of the compression component 3 is increased, thereby increasing the exhaust temperature of the compressor.

[0057] When the evaporator is frosted and liquid hammer occurs in the air-conditioning system, the heating element 5 can also heat the liquid refrigerant and convert the liquid refrigerant into gaseous refrigerant, effectively improving the impact of liquid hammer. The motor assembly 2 is also cooled through the guide hole 602 and the guide channel 1011, which not only improves the performance of the motor, but also facilitates the vaporization of the refrigerant, thereby improving the performance of the compressor.

[0058] In addition, this embodiment also relates to a compressor, comprising the compressor housing as described above.

[0059] The compressor of this embodiment is provided with the above-mentioned compressor housing, which helps to improve the performance and safety of the compressor in winter.

[0060] 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 compressor housing, characterized in that: It comprises a shell body (1) having a cavity, and a partition (6) and a heating element (5) arranged in the cavity; The partition (6) divides the chamber into a first chamber (100) and a second chamber (200) which are sequentially arranged along a flow path of the refrigerant, the first chamber (100) being used to install the motor assembly (2), the second chamber (200) being used to install the compression assembly (3), and the installed compression assembly (3) is capable of dividing the second chamber (200) into an isolation chamber (201) and a compression chamber (202), the isolation chamber (201) being close to the first chamber (100), and a vent (601) for connecting the first chamber (100) and the isolation chamber (201) is provided on the partition (6), and the vent (601) is capable of allowing the refrigerant to pass through; The heating element (5) is arranged in the isolation cavity (201) and is used to heat the refrigerant.

2. The compressor housing according to claim 1, wherein: It also includes a flow guiding structure, which is used to guide the liquid refrigerant in the isolation cavity (201) to the first cavity (100) to cool the motor component (2) in the first cavity (100).

3. The compressor housing according to claim 2, wherein: The flow guiding structure comprises a flow guiding channel (1011) provided below the first cavity (100), and a flow guiding hole (602) provided at the bottom of the partition (6), wherein the flow guiding hole (602) is used to connect the flow guiding channel (1011) and the isolation cavity (201).

4. The compressor housing according to claim 1, wherein: A liquid blocking portion (1021) is provided in the isolation cavity (201) and is located between the vent hole (601) and the heating element (5). The liquid blocking portion (1021) is used to block the liquid refrigerant flowing into the vent hole (601) from flowing toward the heating element (5).

5. The compressor housing according to claim 1, wherein: The vent hole (601) is in an arc shape extending along the circumference of the partition (6); and / or, The vent holes (601) are multiple and spaced apart along the circumference of the partition (6).

6. The compressor housing according to claim 1, wherein: The vent hole (601) is provided at the top of the partition (6); and / or, The heating element (5) is provided with a temperature detection portion for detecting the temperature of the heating element (5).

7. The compressor housing according to claim 1, wherein: There is one heating element (5), and the heating element (5) is in a ring shape arranged along the circumference of the isolation cavity (201); alternatively, there are multiple heating elements (5) arranged at intervals along the circumference of the isolation cavity (201).

8. The compressor housing according to any one of claims 1 to 7, characterized in that: The shell body (1) comprises a first part (101), a second part (102) and a third part (103) which are connected in sequence; The first part (101) and the second part (102) form the first cavity (100), the second part (102) and the third part (103) form the second cavity (200), and the compression component (3) is arranged in the third part (103), and the partition (6) and the heating element (5) are arranged in the second part (102).

9. The compressor housing according to claim 8, characterized in that: The separator (6) and the second portion (102) are integrally formed.

10. A compressor, characterized in that: A compressor housing comprising the compressor housing according to any one of claims 1 to 9.

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