Compressor and refrigerating system

Abstract

The invention discloses a compressor and a refrigerating system. The compressor comprises a machine shell, a motor and a pump body assembly. A cavity is defined by the machine shell. The motor is mounted in the cavity; the pump body assembly is installed in the cavity and comprises a crankshaft, a static scroll plate, a support and a movable scroll plate. Wherein the crankshaft sequentially penetrates through the motor, the static scroll plate, the movable scroll plate and the support, a first scroll tooth part is arranged on the side, close to the movable scroll plate, of the static scroll plate, and a second scroll tooth part meshed with the first scroll tooth part is arranged on the movable scroll plate. And the motor is configured to drive the crankshaft to rotate so as to drive the movable scroll plate and the eccentric part of the crankshaft to synchronously rotate and translate. According to the scroll compressor, the problems of high noise and vibration of the scroll compressor can be solved, meanwhile, the exhaust pressure loss in the compression process of the compressor is reduced, and it is ensured that the performance of the structure and the performance of a traditional scroll reach the same level or above.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a compressor and a refrigeration system. Background Art

[0002] Compressors, as core components of heat exchange equipment such as air conditioners and refrigerators, are mainly divided into piston, rotor, and scroll types. Scroll compressors are primarily composed of components such as a motor, crankshaft, rotor plate, stator plate, cross ring, and mainframe. Conventional scroll compressors are mainly divided into two types: pump-mounted and pump-mounted. These two types of scroll compressors have a scroll tooth section on one side of the rotor plate and a bearing section on the other. The bearing section houses an eccentric crankshaft. The rotation of the eccentric crankshaft drives the rotor plate, which then engages with the stator plate to complete a series of processes, including suction, compression, and exhaust.

[0003] At present, the movable scroll of a conventional scroll compressor is mainly arranged at the end of the crankshaft, wherein the eccentric part of the crankshaft and the scroll tooth part of the movable scroll or the fixed scroll are not at the same height. During the operation of the scroll compressor, a certain amount of overturning will occur, and the noise and vibration of the scroll compressor are relatively high. Summary of the Invention

[0004] The main purpose of the present invention is to provide a compressor and a refrigeration system to solve the problem of high noise and vibration of the scroll compressor in the prior art.

[0005] According to one aspect of the present invention, there is provided a compressor comprising:

[0006] a casing, the casing being arranged to form a cavity;

[0007] a motor, the motor being mounted in the cavity;

[0008] A pump body assembly is installed in the cavity, and the pump body assembly includes a crankshaft, a fixed scroll, a bracket, and a movable scroll;

[0009] Among them, the crankshaft passes through the motor, the fixed scroll, the movable scroll and the bracket in sequence, the fixed scroll is provided with a first scroll tooth portion on the side close to the movable scroll, and the movable scroll is provided with a second scroll tooth portion meshing with the first scroll tooth portion, and the motor is configured to drive the crankshaft to rotate so as to drive the movable scroll and the eccentric portion of the crankshaft to rotate and translate synchronously.

[0010] Furthermore, an exhaust hole and a pressure relief hole are provided on the fixed scroll disk, the sum of the cross-sectional area of ​​the exhaust hole involved in exhaust and the cross-sectional area of ​​the pressure relief hole is A, the displacement of the compressor is B, wherein 0.009≤A / B≤0.015.

[0011] Furthermore, the displacement B of the compressor satisfies the relationship: 5000mm 3 ≤B≤16000mm 3 .

[0012] Furthermore, an exhaust pipe is provided on the top of the casing, and the exhaust pipe is connected to the cavity. The motor is located on the side of the static scroll disk close to the exhaust pipe, and the static scroll disk is closer to the exhaust pipe than the bracket. The gas discharged from the exhaust hole directly enters the exhaust pipe from the cavity.

[0013] Furthermore, the exhaust hole includes a main hole and an exhaust auxiliary groove. The main hole is arranged to pass through the thickness direction of the fixed scroll plate. The exhaust auxiliary groove is arranged on a side of the fixed scroll plate close to the bracket and is connected to the main hole.

[0014] Furthermore, the first scroll tooth portion and the second scroll tooth portion have a first compression chamber and a second compression chamber, and a line segment passing through the respective suction closing points of the first compression chamber and the second compression chamber and perpendicular to the axis of the eccentric portion of the crankshaft is a first line segment. Along the circumference of the crankshaft, the fixed scroll plate has a first area rotated by -60° to 60° around the first line segment, and the pressure relief hole is provided in at least the first area.

[0015] Furthermore, the pressure relief hole is provided through the thickness direction of the fixed scroll, and the cross section of the pressure relief hole is circular, annular, U-shaped, V-shaped or long strip.

[0016] Furthermore, an oil supply channel is provided on the crankshaft, and the oil supply channel extends from the end of the second section toward a direction close to the eccentric portion.

[0017] Furthermore, the pump assembly further comprises:

[0018] a cross ring installed between the orbiting scroll and the bracket; and / or

[0019] A silencer cover is provided on the static scroll disk and covers the exhaust hole, and an air outlet is provided on the silencer cover.

[0020] On the other hand, the present application also provides a refrigeration system, which includes the above-mentioned compressor.

[0021] In the present invention, the crankshaft is sequentially threaded through the motor, the fixed scroll, the orbiting scroll, and the bracket. The orbiting scroll is at the same height as the eccentric portion, and the motor is connected to the first section of the crankshaft. When the motor drives the crankshaft to rotate, it can drive the orbiting scroll to rotate in a translational manner, thereby driving the first scroll tooth portion to rotate relative to the second scroll tooth portion to compress the refrigerant inside the compression channel. During the rotation of the crankshaft, since the two ends of the crankshaft are respectively threaded through the fixed scroll and the bracket, the orbiting scroll rotates synchronously with the eccentric portion and is not prone to overturning, which can reduce the noise and vibration of the pump assembly and the compressor to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A cross-sectional view of a compressor disclosed in an embodiment of the present application;

[0024] Figure 2 This is a front view of the pump assembly disclosed in an embodiment of the present application;

[0025] Figure 3 A cross-sectional view of a pump assembly disclosed in an embodiment of the present application;

[0026] Figure 4 This is an exploded view of the pump assembly (minus the crankshaft) disclosed in an embodiment of the present application;

[0027] Figure 5 A cross-sectional view of the movable scroll of the pump assembly disclosed in an embodiment of the present application when the movable scroll moves to a first position;

[0028] Figure 6 A cross-sectional view of the movable scroll of the pump assembly disclosed in an embodiment of the present application when the movable scroll moves to the second position;

[0029] Figure 7 This is a three-dimensional structural diagram of the fixed scroll plate disclosed in an embodiment of the present application at a first viewing angle;

[0030] Figure 8 A cross-sectional view of a fixed scroll according to an embodiment of the present application;

[0031] Figure 9 A bottom view of the fixed scroll disclosed in an embodiment of the present application;

[0032] Figure 10 This is a three-dimensional structural diagram of the fixed scroll disk disclosed in an embodiment of the present application at a second viewing angle;

[0033] Figure 11A cross-sectional view of the movable scroll of the pump assembly disclosed in an embodiment of the present application when the movable scroll moves to a third position;

[0034] Figure 12 This is a cross-sectional view of the movable scroll of the pump body assembly disclosed in an embodiment of the present application when it moves to the fourth position.

[0035] The above drawings include the following reference numerals:

[0036] 10. Crankshaft; 11. First section; 12. Eccentric part; 13. Second section; 14. Oil supply channel; 101. Oil supply hole; 102. Cavity; 103. First compression chamber; 104. Second compression chamber; 20. Stationary scroll; 21. First scroll tooth; 22. Exhaust hole; 23. Pressure relief hole; 221. Main body hole; 222. Exhaust auxiliary groove; 24. Inlet hole; 30. Bracket; 40. Orbital scroll; 41. Second scroll tooth; 50. Cross ring; 60. Muffler; 70. Casing; 71. Cavity; 72. Exhaust pipe; 73. Inlet pipe; 80. Motor; 90. Sealing ring. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorized specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0040] As mentioned in the background technology, the geometric centers of the tooth height direction of the eccentric portion of the crankshaft of the existing scroll compressor and the scroll teeth of the orbiting scroll plate and the static scroll plate are not at the same height, and the scroll compressor will produce a certain amount of overturning during operation, and the noise and vibration of the scroll compressor are relatively high. To this end, the present application provides a new type of compressor, and improves the pump body assembly of the compressor to solve the problem of relatively high noise and vibration of the pump body of the existing scroll compressor, while optimizing the proportional relationship between exhaust and pressure relief and displacement, ensuring that the performance of the compressor can reach the traditional level or above. The following will be a detailed introduction to the compressor and its pump body assembly of the present application in conjunction with the accompanying drawings.

[0041] Combine Figures 1 to 4 As shown, according to an embodiment of the present application, a compressor is provided, which may be a vertical compressor (such as Figure 1 The compressor in this embodiment includes a casing 70, a motor 80 and a pump assembly.

[0042] Among them, the casing 70 is surrounded to form a cavity 71, and the pump body assembly and the motor 80 are both installed in the cavity 71. The motor 80 is connected to the pump body assembly to drive the pump body assembly to compress the refrigerant and discharge it into the cavity 71. The casing 70 is provided with an air inlet pipe 73 and an exhaust pipe 72. The air inlet pipe 73 is arranged on the side wall of the casing 70, and the exhaust pipe 72 is arranged on the top of the casing 70. The refrigerant enters the pump body assembly from the air inlet pipe 73, and is discharged to the outside of the compressor through the exhaust pipe 72 after being compressed by the pump body assembly.

[0043] Furthermore, the pump assembly in this embodiment includes a crankshaft 10, a fixed scroll 20, a bracket 30 and an orbiting scroll 40, wherein the crankshaft 10 passes through the motor 80, the fixed scroll 20, the orbiting scroll 40 and the bracket 30 in sequence.

[0044] Specifically, the crankshaft 10 in this embodiment includes a first section 11, an eccentric portion 12 and a second section 13, and the first section 11, the eccentric portion 12 and the second section 13 are arranged in sequence along the axial direction of the crankshaft 10. The first section 11 is connected to the motor 80, that is, the motor is connected; the fixed scroll 20 is sleeved on the side of the first section 11 close to the eccentric portion 12, and the fixed scroll 20 is close to the movable scroll 40. A first scroll tooth portion 21 is provided; the bracket 30 is sleeved on the side of the second section 13 close to the eccentric portion 12 and is surrounded by the fixed scroll 20 to form a cavity 102; the movable scroll 40 is located in the cavity 102 and is sleeved on the eccentric portion 12, and a second scroll tooth portion 41 is provided on the movable scroll 40, and the second scroll tooth portion 41 is meshed with the first scroll tooth portion 21. The motor 80 is configured to drive the crankshaft 10 to rotate so that the orbiting scroll 40 and the eccentric portion 12 of the crankshaft 10 rotate and translate synchronously, so as to compress the refrigerant entering the interior of the pump assembly.

[0045] In the present application, since the fixed scroll 20 is mounted on the side of the first section 11 close to the eccentric portion 12, the bracket 30 is sleeved on the side of the second section 13 close to the eccentric portion 12, and the orbiting scroll 40 is sleeved on the eccentric portion 12, that is, after the pump body assembly is assembled, the crankshaft 10 is sequentially passed through the motor 80, the fixed scroll 20, the orbiting scroll 40, and the bracket 30. The orbiting scroll 40 is at the same height as the eccentric portion 12, and the motor 80 is drivingly connected to the first section 11 of the crankshaft 10. When the motor 80 drives the crankshaft 10 to rotate, it can drive the orbiting scroll 40 to rotate, thereby driving the first scroll tooth portion 21 to rotate relative to the second scroll tooth portion 41 to compress the refrigerant and the like inside the pump body assembly.

[0046] When the crankshaft 10 rotates, since the two ends of the crankshaft 10, namely the first section 11 and the second section 13, are respectively inserted into the fixed scroll 20 and the bracket 30, the movable scroll 40 rotates synchronously with the eccentric portion 12. The load-bearing center of the eccentric portion 12 and the center distance in the high direction of the second scroll tooth portion 41 on the movable scroll 40 and the first scroll tooth portion 21 on the fixed scroll 20 are greatly reduced to close to zero compared with the traditional structure, the overturning moment is greatly reduced, and overturning is not easy to occur. The noise and vibration of the pump body assembly and the compressor can be reduced to a certain extent, the bending stress of the first scroll tooth portion 21 and the second scroll tooth portion 41 can be reduced, and the reliability of the scroll compressor can be improved.

[0047] When the pump body assembly is actually installed, the bracket 30 is fixed to the inner wall of the cavity 71. Specifically, it can be fixed to the casing 70 by welding, fasteners (such as fastening pins or screws), etc. The fixed scroll 20 is fixed to the bracket 30 by screws, etc., and the movable scroll 40 is installed between the bracket 30 and the fixed scroll 20. When the compressor is a vertical compressor, the bracket 30 is set on one side close to the bottom of the cavity 71, and the motor 80 is driven and connected to the first section 11 of the crankshaft 10, that is, the pump body assembly is installed in a downward position. An oil supply channel 14 is provided on the crankshaft 10. When the pump body assembly is installed in a downward position, the oil delivery distance of the oil supply channel 14 can be shortened, so that the lubricating oil can quickly reach the friction moving part of the pump body assembly during the startup or start-up phase, which can reduce the production and manufacturing costs of the pump body assembly and the compressor, and facilitate the miniaturization and high speed of the pump body assembly and the compressor.

[0048] Specifically, the second section 13 of the crankshaft 10 in this embodiment is located at the bottom of the vertical compressor, and the oil supply channel 14 extends from the end of the second section 13 of the crankshaft 10 toward the direction close to the eccentric portion 12. This arrangement facilitates the transportation of oil in the oil pool at the bottom of the vertical compressor from the end of the second section 13 toward the direction close to the eccentric portion 12, thereby facilitating lubrication of the pump body assembly.

[0049] To facilitate oil delivery, the compressor in this embodiment may also be provided with an oil pump (not shown), the oil outlet of which is connected to the oil supply passage 14. To facilitate processing and ensure the structural strength and operational reliability of the crankshaft 10 in this embodiment, the oil supply passage 14 is configured as a straight channel in this embodiment and is located on the axis of the crankshaft 10. A plurality of oil supply holes 101 are provided in the radial direction of the crankshaft 10. These plurality of oil supply holes 101 are spaced apart along the length of the crankshaft 10 and are connected to the oil supply passage 14, so as to facilitate delivery of lubricating oil to various parts to lubricate the various structures of the pump assembly.

[0050] Combine Figures 1 to 10 As shown, the fixed scroll 20 in this embodiment is provided with an exhaust hole 22, a pressure relief hole 23 and an air inlet hole 24. In order to facilitate the delivery of external refrigerant to the pump body assembly, the air inlet pipe 73 on the casing 70 in this embodiment is connected to the air inlet hole 24. After the refrigerant enters the pump body assembly from the air inlet pipe 73 through the air inlet hole 24, the motor 80 drives the crankshaft 10 to rotate, which in turn drives the movable scroll 40 to rotate in a translational manner to compress the refrigerant, and finally discharge it from the exhaust hole 22. At the same time, since the fixed scroll 20 in this embodiment is provided with a pressure relief hole 23, the refrigerant in the pump body assembly can be depressurized and exhausted through the action of the pressure relief hole 23, which can improve the energy efficiency of the pump body assembly under partial load and the reliability under high load conditions.

[0051] In addition, in this embodiment, the bracket 30 is arranged close to the bottom of the cavity 71, and an exhaust hole 22 is correspondingly provided on the static scroll 20. During actual installation, the motor 80 is located on the side of the static scroll 20 close to the exhaust pipe 72, and the static scroll 20 is closer to the exhaust pipe 72 than the bracket 30. In this way, compared with the method of arranging the static scroll 20 close to the bottom of the cavity 71, in this embodiment, the refrigerant discharged from the static scroll 20 can be directly discharged to the top chamber of the cavity 71 and discharged from the exhaust pipe 72. There is no need to set a drainage channel or other structure on the static scroll 20 to discharge the compressed refrigerant to the top of the cavity 71. The exhaust channel is smoother, which can not only reduce the production cost of the compressor, but also reduce the energy consumption of the compressor and improve the energy efficiency of the compressor.

[0052] Combine Figure 11 and Figure 12 As shown, during the operation of the compressor, the orbiting scroll 40 can rotate and translate under the drive of the crankshaft 10. At this time, a first compression chamber 103 and a second compression chamber 104 are formed between the second volute portion 41 on the orbiting scroll 40 and the first volute portion 21 on the fixed scroll 20. The first compression chamber 103 and the second compression chamber 104 each have an air intake closing point ( Figure 11 and Figure 12The line segment perpendicular to the axis of the eccentric portion 12 of the crankshaft 10 is the first line segment ( Figure 11 and Figure 12 Centerline segments C1 and C2). Along the circumference of the crankshaft 10, the fixed scroll 20 has a first region (this first region is a sector-shaped region, with the angle bisector of this region being the first line segment) that extends from -60° to 60° around the first line segment. During actual processing, at least the pressure relief holes 23 described above are provided within this first region. Because the refrigerant pressure within the pump assembly begins to increase at the suction closing point, the provision of pressure relief holes 23 within this first region in this embodiment effectively relieves the refrigerant pressure within the pump assembly, thereby improving the operational reliability and stability of the pump assembly in this embodiment.

[0053] It can be understood that the pressure relief hole 23 in the first area of ​​the present embodiment can be a through hole located as a whole in the first area and passing through the static scroll plate 20 along the thickness direction of the static scroll plate 20 (i.e., the axial direction of the crankshaft 10), or it can be an inclined hole inclined to the axial direction of the crankshaft 10, as long as the inlet end of the pressure relief hole 23 is located in the first area.

[0054] In some embodiments of the present application, the pressure relief hole 23 may be provided not only in the first region, but also in other locations of the fixed scroll 20 .

[0055] Optionally, the pressure relief hole 23 in this embodiment may be one, two, or more than two. The cross-section of the pressure relief hole 23 may be circular, annular, U-shaped, V-shaped, or elongated, etc., and the specific shape may be selected based on actual use and pressure relief requirements. It should be noted that the cross-section of the pressure relief hole 23 in this embodiment refers to the cross-section obtained by cutting the pressure relief hole 23 in a direction perpendicular to the extension of the pressure relief hole 23.

[0056] Furthermore, in this embodiment, the sum of the cross-sectional area of ​​the exhaust hole 22 and the cross-sectional area of ​​the pressure relief hole 23 is A (unit: mm). 2 ), the displacement of the compressor using the pump assembly in this embodiment is B (unit: mm 3 ), the range of which satisfies the relationship: 5000mm 3 ≤B≤16000mm 3 , where 0.009≤A / B≤0.015, for example, A / B can be 0.009, 0.010, 0.011, 0.012, 0.013, 0.014 or 0.015, etc. It should be noted that the units of A and B in this embodiment are different. When comparing the two, as long as A is in mm, 2 , B is mm 3 When making measurements, only specific data needs to be taken for comparison.

[0057] Compared with the rotary compressor, the scroll compressor in the present application has a structural feature that the suction and exhaust process is continuous, and the volume change inside the pump body assembly is relatively slow. Therefore, the exhaust resistance loss of the scroll compressor is low. The exhaust resistance loss of a traditional scroll compressor is about 5%-15% of that of a rotary compressor. In the present application, since the crankshaft 10 is set through the pump body assembly, the overturning moment is reduced and the noise and vibration are low. In the structure of the present application, in order to reduce the overturning moment during the movement of the movable scroll 40, the center distance between the movable scroll 40 and the fixed scroll 20 in the compressor height direction, that is, the axial direction of the crankshaft 10 is shortened. At this time, the eccentric part 12, the first scroll tooth part 21 and the second scroll tooth part 41 are concentrated as a whole at the same height of the pump body assembly. Without changing the volume of the pump body assembly, it brings about the problem of difficulty in arranging the exhaust hole 22 and the pressure relief hole 23.

[0058] In this application, in order to meet the use requirements of miniaturized scroll compressors and minimize the exhaust resistance loss of the compressor, it is necessary to optimize the area of ​​the exhaust hole 22 and the pressure relief hole 23 as much as possible, while maintaining the displacement B of the compressor at 5000mm. 3 Up to 16000mm 3 Under this condition, the sum A of the cross-sectional area of ​​the exhaust hole 22 participating in the exhaust and the cross-sectional area of ​​the pressure relief hole 23 and the displacement B of the compressor satisfy the relationship 0.009≤A / B≤0.015, which can reduce the exhaust pressure loss of the compressor during the compression process and improve the energy efficiency of the compressor.

[0059] In the present application, when A / B=0.009, the exhaust resistance loss of the compressor of the present application is 15%-25% of that of a conventional single-cylinder rotary compressor; when A / B=0.012, the exhaust resistance loss of the compressor of the present application is 10%-20% of that of a conventional single-cylinder rotary compressor; when A / B=0.015, the exhaust resistance loss of the compressor of the present application is 5%-15% of that of a conventional single-cylinder rotary compressor. In other words, as the ratio of A / B increases, the exhaust resistance loss of the compressor in this embodiment will become smaller, but at the same time it will bring about structural problems such as the exhaust holes 22 and the pressure relief holes 23 being difficult to arrange and the excessive number and high cost. That is, in the present application, by making the displacement B of the compressor 5000mm 3 Up to 16000mm 3 Under this condition, the sum A of the cross-sectional area of ​​the exhaust hole 22 participating in the exhaust and the cross-sectional area of ​​the pressure relief hole 23 and the displacement B of the compressor satisfy the relationship 0.009≤A / B≤0.015, which can reduce the exhaust pressure loss of the compressor during the compression process, improve the energy efficiency of the compressor, and take into account the use requirements of miniaturization, low noise, low vibration and high energy efficiency of the compressor.

[0060] It can be understood that the cross-sectional area of ​​the pressure relief hole 23 described in this embodiment refers to the sum of the cross-sectional areas of all the pressure relief holes 23 in the pump body assembly, and the cross-sectional area of ​​the pressure relief hole 23 refers to the area of ​​the cross section obtained by cutting the pressure relief hole 23 in a direction perpendicular to the extension of the pressure relief hole 23. The exhaust hole 22 in this embodiment includes a main body hole 221 and an exhaust auxiliary groove 222, wherein the main body hole 221 is arranged through along the thickness direction of the fixed scroll plate 20 (i.e., in a direction parallel to the axial direction of the crankshaft 10), and the exhaust auxiliary groove 222 is arranged on the side of the fixed scroll plate 20 close to the bracket 30 and is connected to the main body hole 221. In this structure, the cross-sectional area of ​​the exhaust hole 22 participating in the exhaust is the area of ​​the one with the smaller cross-sectional area between the exhaust auxiliary groove 222 and the main body hole 221. Specifically, the cross-sectional area of ​​the exhaust auxiliary groove 222 in this embodiment is Figure 8 The cross-sectional area of ​​the main body hole 221 is Figure 5 The cross-sectional area of ​​the main body hole 221 in the cross section shown in , that is, the cross-sectional area of ​​the main body hole 221.

[0061] In addition, by providing an auxiliary exhaust groove 222 in this embodiment, after the refrigerant is compressed, it can flow along the auxiliary exhaust groove 222 into the main body hole 221 and be discharged from the pump body assembly. The auxiliary exhaust groove 222 in this embodiment can serve as a guide, facilitating the rapid discharge of refrigerant. Of course, in other embodiments of the present application, the exhaust hole 22 can also be provided without the auxiliary exhaust groove 222, and only the main body hole 221 portion can be provided. In this case, the cross-sectional area of ​​the exhaust hole 22 participating in the exhaust is the cross-sectional area of ​​the main body hole 221.

[0062] Furthermore, the pump body assembly in this embodiment also includes an Oldham ring 50, which is installed between the orbiting scroll 40 and the bracket 30 to facilitate limiting the position of the orbiting scroll 40. In order to facilitate sealing the gap between the Oldham ring 50 and the orbiting scroll 40, a sealing ring 90 is also provided between the Oldham ring 50 and the orbiting scroll 40. Of course, in other embodiments of the present application, the Oldham ring 50 can also be configured as a spherical coupling or a cylindrical pin coupling, etc. As long as it is other deformation methods based on the concept of the present application, they are all within the scope of protection of the present application.

[0063] Furthermore, the pump assembly in this embodiment also includes a muffler cover 60, which is arranged on the fixed scroll 20 and covers the exhaust hole 22. The muffler cover 60 is provided with an air outlet (not shown in the figure). After the compressed refrigerant is discharged from the exhaust hole 22, it can enter the muffler cover 60, be silenced by the muffler cover 60, and then be discharged into the cavity 71, and finally be discharged from the compressor through the exhaust pipe 72.

[0064] In combination with the above embodiments, it can be known that:

[0065] The pump body assembly of the compressor of the present application is arranged on the side of the compressor close to the oil pool, and the motor 80 is arranged on the side away from the oil pool. The pump body assembly is in contact with the oil pool, which can shorten the oiling time when the compressor starts and improve the lubrication effect of the pump body assembly. In addition, the crankshaft 10 of the present application is arranged to pass through the fixed scroll 20, the movable scroll 40 and the bracket 30. The movable scroll 40 is not easy to overturn when rotating, which can reduce the vibration and noise during the operation of the compressor. At the same time, in the present application, by making the sum of the cross-sectional area of ​​the exhaust hole 22 participating in the exhaust and the cross-sectional area of ​​the pressure relief hole 23 A and the displacement of the compressor B satisfy the relationship: 0.009≤A / B≤0.015, the exhaust pressure loss of the compressor can be reduced and the energy efficiency of the compressor can be improved. The fixed scroll 20 of the entire compressor is above the pump body assembly, and the exhaust channel is smoother, meeting the exhaust pressure relief area ratio relationship, thereby improving the energy efficiency of the compressor.

[0066] In another aspect, the present application further provides a refrigeration system comprising the compressor of the aforementioned embodiment. Therefore, the refrigeration system includes all the technical effects of the compressor of the aforementioned embodiment. Since the technical effects of the compressor have been described in detail above, they will not be repeated here.

[0067] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0068] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0069] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A compressor, characterized in that: include: A housing (70), wherein the housing (70) is enclosed to form a cavity (71); a motor (80), the motor (80) being mounted in the cavity (71); A pump body assembly is installed in the cavity (71), and the pump body assembly includes a crankshaft (10), a fixed scroll (20), a bracket (30), and a movable scroll (40); The crankshaft (10) passes through the motor (80), the fixed scroll (20), the movable scroll (40) and the bracket (30) in sequence. A first vortex tooth portion (21) is provided on a side of the fixed scroll (20) close to the movable scroll (20). A second vortex tooth portion (22) meshing with the first vortex tooth portion (21) is provided on the movable scroll (40). The motor (80) is configured to drive the crankshaft (10) to rotate so as to drive the movable scroll (40) and the eccentric portion (12) of the crankshaft (10) to rotate and translate synchronously.

2. The compressor according to claim 1, characterized in that The static scroll (20) is provided with an exhaust hole (22) and a pressure relief hole (23), the sum of the cross-sectional area of ​​the exhaust hole (22) and the cross-sectional area of ​​the pressure relief hole (23) participating in the exhaust is A, and the displacement of the compressor is B, wherein 0.009≤A / B≤0.

015.

3. The compressor according to claim 2, characterized in that The displacement B of the compressor satisfies the relationship: 5000mm 3 ≤B≤16000mm 3 .

4. The compressor according to claim 2, characterized in that An exhaust pipe (72) is provided on the top of the casing (70), and the exhaust pipe (72) is communicated with the cavity (71). The motor (80) is located on a side of the fixed scroll (20) close to the exhaust pipe (72), and the fixed scroll (20) is closer to the exhaust pipe (72) than the bracket (30). The gas discharged from the exhaust hole (22) directly enters the exhaust pipe (72) from the cavity (71).

5. The pump assembly according to claim 2, characterized in that: The exhaust hole (22) comprises a main hole (221) and an exhaust auxiliary groove (222), wherein the main hole (221) is provided through the thickness direction of the fixed scroll (20), and the exhaust auxiliary groove (222) is provided on a side of the fixed scroll (20) close to the bracket (30) and communicates with the main hole (221).

6. The pump assembly according to claim 2, characterized in that The first vortex tooth portion (41) and the second vortex tooth portion (21) have a first compression chamber (103) and a second compression chamber (104), and a line segment passing through the respective suction closing points of the first compression chamber (103) and the second compression chamber (104) and perpendicular to the axis of the eccentric portion (12) of the crankshaft (10) is a first line segment. Along the circumference of the crankshaft (10), the fixed scroll (20) has a first area rotated by -60° to 60° around the first line segment, and the pressure relief hole (23) is provided in at least the first area.

7. The compressor according to claim 2, characterized in that The pressure relief hole (23) is provided through the static scroll (20) in a thickness direction, and the cross section of the pressure relief hole (23) is circular, annular, U-shaped, V-shaped or elongated.

8. The compressor according to any one of claims 1 to 7, characterized in that An oil supply channel (14) is provided on the crankshaft (10), and the oil supply channel (14) extends from the end of the second section (13) toward a direction close to the eccentric portion (12).

9. The compressor according to any one of claims 2 to 7, characterized in that The pump assembly further comprises: a cross ring (50), the cross ring (50) being installed between the orbiting scroll (40) and the bracket (30); and / or, A silencer cover (60) is provided on the static scroll (20) and covers the exhaust hole (22), and an exhaust hole is provided on the silencer cover (60).

10. A refrigeration system, characterized in that: The refrigeration system comprises the compressor according to any one of claims 1 to 9.

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