Pump body for compressor, compressor and refrigeration equipment

Abstract

The utility model relates to the technical field of compressors, and discloses a pump body for a compressor, comprising: a cylinder comprising a first end and a second end opposite to each other; the main bearing is arranged at the first end of the air cylinder; the auxiliary bearing is arranged at the second end of the air cylinder, and the auxiliary bearing, the main bearing and the air cylinder jointly define a compression space used for compressing refrigerants. The exhaust assembly is arranged on the side, away from the air cylinder, of the main bearing and comprises a valve seat and a valve block, one end of the valve seat and one end of the valve block are connected with the main bearing, a fixing part is formed at the joint, and the valve block is arranged on the side, away from the air cylinder, of the valve seat. An exhaust hole penetrating through the thickness of the valve seat is formed in the other end of the valve seat, the exhaust hole is configured to be communicated with the compression space and the side space, away from the air cylinder, of the main bearing, and the valve block is configured to move between the position attached to the exhaust hole and the position away from the exhaust hole so as to close or open the exhaust hole; wherein the depth of the exhaust hole is gradually reduced in the direction close to the fixing part. Therefore, exhaust resistance is reduced, pump body efficiency is improved, and compressor energy efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a pump body for a compressor, a compressor and a refrigeration device. Background Art

[0002] At present, refrigeration equipment such as air conditioners have increasingly higher requirements for the energy efficiency of compressors, and the pump efficiency of the compressor is a key factor affecting the energy efficiency of the compressor.

[0003] The related art discloses a compressor, including a pump body assembly, a motor and a housing, wherein the pump body assembly includes a crankshaft, a muffler, a main bearing assembly, a cylinder, a roller, a sliding vane and a secondary bearing. The main bearing assembly includes a main bearing and an exhaust assembly, wherein the exhaust assembly includes a valve seat, a valve plate and a baffle, and the valve seat is provided with an exhaust hole. The valve seat at the exhaust hole is parallel to the horizontal plane.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The valve seat at the exhaust hole is parallel to the horizontal plane, and the valve plate is attached to the horizontal exhaust hole. There is a pressure difference on both sides of the valve plate. The exhaust pressure required to lift the valve plate is large, the exhaust process is laborious, the pump body efficiency is low, and the energy efficiency of the compressor is low. Moreover, the exhaust direction of the exhaust hole is perpendicular to the valve plate, and the impact force of the gas on the valve plate is large. Under long-term influence, the valve plate may break, affecting the normal operation of the compressor.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a pump body for a compressor, a compressor and a refrigeration device, so as to improve the energy efficiency of the compressor and extend the service life of a valve plate.

[0009] According to the first aspect of the embodiment of the utility model, a pump body for a compressor is provided, comprising: a cylinder, comprising a first end and a second end opposite to each other; a main bearing, arranged at the first end of the cylinder; a secondary bearing, arranged at the second end of the cylinder, and together with the main bearing and the cylinder, defining a compression space for compressing refrigerant; an exhaust assembly, arranged on the side of the main bearing away from the cylinder, comprising a valve seat and a valve plate, one end of the valve seat and the valve plate are both connected to the main bearing and a fixed portion is formed at the connection, and the valve plate is arranged on the side of the valve seat away from the cylinder; the other end of the valve seat is provided with an exhaust hole running through the thickness thereof, the exhaust hole is configured to connect the compression space and the space on the side of the main bearing away from the cylinder, and the valve plate is configured to move between a position fitting the exhaust hole and a position away from the exhaust hole to close or open the exhaust hole; wherein the depth of the exhaust hole gradually decreases in a direction approaching the fixed portion.

[0010] Optionally, the valve seat includes: a first side, facing the cylinder; a second side, facing away from the cylinder and arranged opposite to the first side, including a first inclined section; wherein the first side coincides with the horizontal plane, the exhaust hole is arranged in the first inclined section, and the first inclined section is inclined downward in a direction close to the fixed part.

[0011] Optionally, the angle between the first inclined section and the horizontal plane is a, where 0° <a≤30°。

[0012] Optionally, the exhaust assembly also includes: a baffle, which is arranged on the side of the valve sheet away from the exhaust hole, one end of which is connected to the fixed part, and the other end of which is provided with a second inclined section; wherein the second inclined section corresponds to the exhaust hole, and the second inclined section is inclined toward the direction where the cylinder is located along the direction close to the fixed part.

[0013] Optionally, the angle between the second inclined section and the horizontal plane is b, where 0° <b≤30°。

[0014] Optionally, the distance from the center of the side surface of the exhaust hole facing away from the cylinder to the center of the side surface of the second inclined section facing the valve plate is the lift height h, and the displacement of the compressor is n, wherein h≥n / 5.

[0015] Optionally, the baffle further includes: an arc segment, one end of which is connected to the fixing portion, and the other end of which is connected to the second inclined segment, and is bent in a direction away from the cylinder.

[0016] Optionally, the diameter of the exhaust hole is d, and the displacement of the compressor is n, wherein,

[0017] According to a second aspect of an embodiment of the utility model, a compressor is provided, comprising: a housing; and a pump body for the compressor, disposed in the housing.

[0018] According to a third aspect of an embodiment of the utility model, a refrigeration device is provided, including: a refrigeration system for refrigeration, including the above-mentioned compressor.

[0019] The pump body for a compressor, the compressor, and the refrigeration equipment provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The depth of the exhaust hole gradually decreases in the direction close to the fixed part, and it can be inferred that the exhaust hole is inclined toward the direction where the cylinder is located in the direction close to the fixed part. Compared with the horizontal exhaust hole, the exhaust pressure required for the gas in the compression space to lift the valve plate through the inclined exhaust hole is reduced, the exhaust resistance is reduced, the exhaust is smoother, the pump body efficiency is improved, and thus the overall energy efficiency of the compressor is improved. Moreover, the exhaust direction of the exhaust hole is not perpendicular to the valve plate, and the impact force of the gas on the valve plate is small, which reduces the risk of the valve plate breaking, extends the service life of the valve plate, and ensures the normal operation of the compressor. In addition, the depth of the exhaust hole gradually decreases in the direction close to the fixed part, which can reduce the clearance volume of the exhaust hole, thereby improving the efficiency of the pump body, thereby improving the energy efficiency of the compressor.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a partial structural schematic diagram of a compressor provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic structural diagram of a main bearing provided by an embodiment of the present disclosure;

[0025] Figure 3 yes Figure 2 Schematic diagram of the cross section along the AA direction;

[0026] Figure 4 is a schematic structural diagram of an exhaust assembly provided by an embodiment of the present disclosure;

[0027] Figure 5 It is a schematic diagram of the structure of an exhaust assembly in the prior art.

[0028] Reference numerals:

[0029] 10: compressor; 11: housing;

[0030] 20: pump body; 21: crankshaft;

[0031] 30: Cylinder;

[0032] 40: Main bearing;

[0033] 50: auxiliary bearing;

[0034] 60: exhaust assembly; 61: valve seat; 611: first side; 612: second side; 6121: first inclined section; 6122: first horizontal section; 6123: annular protrusion; 62: valve plate; 621: second horizontal section; 622: third inclined section; 63: fixing portion; 64: exhaust hole; 65: baffle; 651: second inclined section; 652: arc section. DETAILED DESCRIPTION

[0035] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0036] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate for the disclosed embodiments described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] Unless otherwise stated, the term "plurality" means two or more.

[0040] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0041] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0043] At present, the pump body 20 of the compressor 10 is mainly composed of an upper cylinder head, a cylinder 30, a crankshaft 21, a piston, and a lower cylinder head, and forms a closed structure of the cylinder 30 cavity. A valve plate exhaust structure is provided on the upper cylinder head and / or the lower cylinder head, and the valve plate exhaust structure includes a valve plate 62, a baffle 65, and an exhaust hole 64. In the initial state, the inside of the cylinder 30 is in a suction pressure under a low pressure state, and the outside of the cylinder 30 is in a discharge pressure under a higher pressure state. At this time, the valve plate 62 is in a closed state under the action of the pressure difference between the inside and outside of the cylinder 30. When the compressor 10 starts working, the motor drives the crankshaft 21 to rotate, and the crankshaft 21 drives the piston to compress the refrigerant in the cylinder 30. When the internal pressure of the cylinder 30 is greater than the exhaust pressure outside the cylinder 30, the valve plate 62 is impacted and bent under the action of the exhaust pressure difference, the exhaust hole 64 opens, and the refrigerant is discharged from the exhaust hole 64; when the crankshaft 21 rotates to the initial position, the exhaust is completed, the refrigerant in the cylinder 30 returns to the initial low-pressure state, while the outside of the cylinder 30 is still in a higher pressure state. Under the action of the pressure difference between the inside and outside of the cylinder 30, the valve plate 62 closes again, and the next intake and exhaust cycle starts again.

[0044] Since the exhaust direction of the exhaust hole 64 is perpendicular to the valve plate 62 , the impact force of the gas on the valve plate 62 is large, which may cause the valve plate 62 to break under long-term influence, affecting the normal operation of the compressor 10 .

[0045] Combination Figure 5As shown, in the related art, the valve seat 61 at the exhaust hole 64 is parallel to the horizontal plane, the valve plate 62 is attached to the horizontal exhaust hole 64, there is a pressure difference on both sides of the valve plate 62, the exhaust pressure required to lift the valve plate 62 is large, the exhaust process is relatively laborious, the pump body 20 is inefficient, and the energy efficiency of the compressor 10 is low.

[0046] Combination Figure 1-4 As shown, the embodiment of the present disclosure provides a pump body 20 for a compressor 10, including a cylinder 30, a main bearing 40, a secondary bearing 50 and an exhaust assembly 60. The cylinder 30 includes a first end and a second end opposite to each other, the main bearing 40 is arranged at the first end of the cylinder 30, the secondary bearing 50 is arranged at the second end of the cylinder 30, and the secondary bearing 50, the main bearing 40 and the cylinder 30 together define a compression space for compressing refrigerant. The exhaust assembly 60 is arranged on the side of the main bearing 40 away from the cylinder 30, and the exhaust assembly 60 includes a valve seat 61 and a valve plate 62, one end of the valve seat 61 and the valve plate 62 are both connected to the main bearing 40 and a fixing portion 63 is formed at the connection, and the valve plate 62 is arranged on the side of the valve seat 61 away from the cylinder 30. The other end of the valve seat 61 is provided with an exhaust hole 64 penetrating the thickness thereof, and the exhaust hole 64 is configured to communicate the compression space with the space on the side of the main bearing 40 away from the cylinder 30, and the valve plate 62 is configured to move between a position close to the exhaust hole 64 and a position away from the exhaust hole 64 to close or open the exhaust hole 64. The depth of the exhaust hole 64 gradually decreases in the direction close to the fixing portion 63.

[0047] With the pump body 20 for the compressor 10 provided by the embodiment of the present disclosure, the depth of the exhaust hole 64 gradually decreases in the direction close to the fixed portion 63, and it can be inferred that the exhaust hole 64 is inclined toward the direction where the cylinder 30 is located in the direction close to the fixed portion 63. Compared with the horizontal exhaust hole 64, the exhaust pressure required for the gas in the compression space to lift the valve plate 62 through the inclined exhaust hole 64 is reduced, the exhaust resistance is reduced, the exhaust is smoother, and the efficiency of the pump body 20 is improved, thereby improving the overall energy efficiency of the compressor 10. Moreover, the exhaust direction of the exhaust hole 64 is not perpendicular to the valve plate 62, the impact force of the gas on the valve plate 62 is small, the risk of the valve plate 62 breaking is reduced, the service life of the valve plate 62 is extended, and the normal operation of the compressor 10 is ensured. In addition, the depth of the exhaust hole 64 gradually decreases in the direction close to the fixed portion 63, which can reduce the clearance volume of the exhaust hole 64, thereby improving the efficiency of the pump body 20, thereby improving the energy efficiency of the compressor 10.

[0048] Optionally, combined Figure 3 and Figure 4As shown, the valve seat 61 includes a first side 611 and a second side 612. The first side 611 faces the cylinder 30, the second side 612 faces away from the cylinder 30, and the second side 612 is arranged opposite to the first side 611. The second side 612 includes a first inclined section 6121, wherein the first side 611 coincides with the horizontal plane, the exhaust hole 64 is arranged in the first inclined section 6121, and the first inclined section 6121 is inclined downward in a direction close to the fixing portion 63.

[0049] The first side 611 of the valve seat 61 is fitted with the upper surface of the cylinder 30, and the sealing is better. The second side 612 of the valve seat 61 is located above the first side 611, and includes a first horizontal section 6122 and a first inclined section 6121. One end of the first horizontal section 6122 is connected to the fixing portion 63, and the other end of the first horizontal section 6122 is connected to the first inclined section 6121, and the angle between the first horizontal section 6122 and the horizontal plane is zero. The first inclined section 6121 is inclined downward along the direction of the first horizontal section 6122, and the first inclined section 6121 is provided with an exhaust hole 64 that runs through its thickness, that is, the depth of the exhaust hole 64 gradually decreases along the direction close to the first horizontal section 6122, so that the clearance volume of the exhaust hole 64 can be reduced, thereby improving the efficiency of the pump body 20, thereby improving the energy efficiency of the compressor 10.

[0050] Optionally, the angle between the first inclined section 6121 and the horizontal plane is a, where 0° <a≤30°。

[0051] The angle between the first inclined section 6121 and the horizontal plane is set to be less than or equal to 30° to avoid a significant decrease in the sealing between the valve plate 62 and the exhaust hole 64 due to an excessively large inclination angle, thereby affecting the normal operation of the compressor 10.

[0052] Optionally, the second side 612 of the valve seat 61 is provided with an annular protrusion 6123 around the exhaust hole 64 , and when the valve plate 62 closes the exhaust hole 64 , the valve plate 62 fits on the annular protrusion 6123 .

[0053] Since the annular protrusion 6123 protrudes upward from the top of the exhaust hole 64, when the valve plate 62 closes the exhaust hole 64, the valve plate 62 can better stop at the annular protrusion 6123, thereby improving the sealing performance of the valve plate 62 closing the exhaust hole 64 and preventing the valve plate 62 from closing the exhaust hole 64 loosely.

[0054] Optionally, the exhaust assembly 60 further includes a baffle 65. The baffle 65 is disposed on a side of the valve plate 62 away from the exhaust hole 64, one end of the baffle 65 is connected to the fixing portion 63, and the other end of the baffle 65 is provided with a second inclined section 651. The second inclined section 651 corresponds to the exhaust hole 64, and is inclined toward the direction where the cylinder 30 is located along the direction close to the fixing portion 63.

[0055] The baffle 65 is arranged on the side of the valve plate 62 away from the exhaust hole 64, and is used to limit the lift of the valve plate 62, and exert a rebound force on the valve plate 62 after abutting against the valve plate 62, so that the valve plate 62 falls back to the exhaust hole 64, and the cycle repeats until the exhaust process is completed. One end of the baffle 65 is connected to the fixing portion 63, and the fixing portion 63 includes a rivet, so that the valve seat 61, the valve plate 62 and the baffle 65 are all fixed to the main bearing 40 by rivets, or the rivet penetrates the main bearing 40 and fixes the valve seat 61, the valve plate 62 and the baffle 65 to the wall of the cylinder 30. A second inclined section 651 is provided at the other end of the baffle 65. The second inclined section 651 is inclined toward the direction of the cylinder 30 along the direction close to the fixing portion 63. The second inclined section 651 corresponds to the exhaust hole 64, that is, the second inclined section 651 is arranged corresponding to the first inclined section 6121. The valve plate 62 moves between the first inclined section 6121 and the second inclined section 651 to realize the opening and closing of the exhaust hole 64.

[0056] Optionally, the included angle between the second inclined section 651 and the horizontal plane is b, where 0° <b≤30°。

[0057] The included angle between the second inclined section 651 and the horizontal plane is set to be less than or equal to 30°, so as to avoid the valve plate 62 from being broken due to an excessively large inclination angle, thereby extending the service life of the valve plate 62.

[0058] Optionally, the distance from the center of the side surface of the exhaust hole 64 facing away from the cylinder 30 to the center of the side surface of the second inclined section 651 facing the valve plate 62 is the lift height h, and the displacement of the compressor 10 is n, where h≥n / 5, and the unit of the displacement n of the compressor 10 is cubic centimeters.

[0059] The valve plate 62 moves between the first inclined section 6121 and the second inclined section 651. The distance between the center of the upper surface of the first inclined section 6121 and the center of the lower surface of the second inclined section 651 is the lift height of the valve plate 62. The relationship between the lift height and the displacement of the compressor 10 is obtained based on empirical values. The lift height is positively correlated with the displacement of the compressor 10. In this way, a suitable lift height can be designed according to the displacement of the compressor 10 to improve the efficiency of the pump body 20, thereby improving the energy efficiency of the compressor 10.

[0060] Alternatively, the displacement of the compressor 10 is increased.

[0061] In this way, the lift height is increased, the speed at which the valve plate 62 falls back is reduced, and the time for the gas in the cylinder 30 to be discharged to the outside is increased, thereby improving the efficiency of the pump body 20.

[0062] Optionally, the baffle 65 further includes an arc segment 652 , one end of the arc segment 652 is connected to the fixing portion 63 , the other end of the arc segment 652 is connected to the second inclined segment 651 , and the arc segment 652 is bent in a direction away from the cylinder 30 .

[0063] Optionally, the valve plate 62 includes a second horizontal section 621 and a third inclined section 622, one end of the second horizontal section 621 is connected to the fixing portion 63, and the other end of the second horizontal section 621 is connected to the third inclined section 622. The third inclined section 622 is inclined downward in a direction close to the second horizontal section 621.

[0064] In this way, the arc segment 652 bends in the direction away from the cylinder 30, that is, there is a gap between the arc segment 652 and the first horizontal segment 6122, and the second horizontal segment 621 can move up and down in this gap. The third inclined segment 622 can move up and down between the first inclined segment 6121 and the second inclined segment 651, thereby reducing the bending angle of the third inclined segment 622 relative to the second horizontal segment 621, and the valve plate 62 is not easy to break, thereby extending the service life of the valve plate 62.

[0065] Optionally, the diameter of the exhaust hole 64 is d, and the displacement of the compressor 10 is n, wherein,

[0066] Thus, according to the relationship between the diameter of the exhaust hole 64 and the displacement of the compressor 10, the diameter of the exhaust hole 64 is positively correlated with the displacement of the compressor 10. Thus, the diameter of the exhaust hole 64 can be designed appropriately according to the displacement of the compressor 10 to meet the exhaust demand, improve the efficiency of the pump body 20, and thus improve the energy efficiency of the compressor 10.

[0067] Alternatively, the displacement of the compressor 10 is increased.

[0068] In this way, the diameter of the exhaust hole 64 increases accordingly, the flow area of ​​the exhaust hole 64 increases, the exhaust is smoother, and the efficiency of the pump body 20 is improved.

[0069] Combination Figure 1 As shown, an embodiment of the present disclosure provides a compressor 10 , including a housing 11 and a pump body 20 for the compressor 10 , wherein the pump body 20 is disposed in the housing 11 .

[0070] In the compressor 10 provided by the embodiment of the present disclosure, the depth of the exhaust hole 64 gradually decreases in the direction close to the fixed portion 63. It can be inferred that the exhaust hole 64 is inclined toward the direction where the cylinder 30 is located in the direction close to the fixed portion 63. Compared with the horizontal exhaust hole 64, the exhaust pressure required for the gas in the compression space to lift the valve plate 62 through the inclined exhaust hole 64 is reduced, the exhaust resistance is reduced, the exhaust is smoother, the efficiency of the pump body 20 is improved, and the overall energy efficiency of the compressor 10 is improved. Moreover, the exhaust direction of the exhaust hole 64 is not perpendicular to the valve plate 62, the impact force of the gas on the valve plate 62 is small, the risk of the valve plate 62 breaking is reduced, the service life of the valve plate 62 is extended, and the normal operation of the compressor 10 is ensured. In addition, the depth of the exhaust hole 64 gradually decreases in the direction close to the fixed portion 63, which can reduce the clearance volume of the exhaust hole 64, thereby improving the efficiency of the pump body 20, thereby improving the energy efficiency of the compressor 10.

[0071] The embodiment of the present disclosure provides a refrigeration device, including a refrigeration system, the refrigeration system is used for refrigeration. The refrigeration system includes the above-mentioned compressor 10.

[0072] The refrigeration equipment is an air conditioner, a refrigerator or a freezer. The air conditioner, the refrigerator or the freezer comprises a compressor 10, an evaporator and a condenser connected by pipelines. The air conditioner, the refrigerator or the freezer also comprises a refrigerant, and the refrigerant flows in the above-mentioned pipelines.

[0073] Optionally, the refrigeration system further includes an evaporator, a condenser and a throttling device.

[0074] The compressor 10 in the refrigeration system mainly absorbs the low-temperature and low-pressure refrigerant from the evaporator, which is eventually converted into a high-temperature and high-pressure refrigerant after adiabatic compression by the compressor 10 .

[0075] The role of the condenser in the refrigeration system is to introduce the high-temperature and high-pressure refrigerant in the compressor 10 into the condenser, condense the refrigerant under the same pressure, and dissipate heat to the surrounding medium, turning it into a high-pressure and low-temperature refrigerant cold liquid.

[0076] The role of throttling devices such as capillary tubes in refrigeration systems is mainly to convert high-pressure and low-temperature refrigerant cold liquid into low-temperature and low-pressure refrigerant after isenthalpic throttling, and then send the refrigerant into the evaporator.

[0077] The main function of the evaporator in the refrigeration system is to boil the low-temperature and low-pressure refrigerant that has passed through the throttling device under the condition of equal pressure in the evaporator. During the boiling process, the refrigerant will absorb the heat of the surrounding medium and eventually become a low-temperature and low-pressure refrigerant.

[0078] In summary, the refrigerant gas in the compression refrigeration system is compressed into a high-temperature and high-pressure superheated refrigerant when passing through the compressor 10, and enters the condenser. The high-temperature and high-pressure refrigerant is condensed into a high-pressure and low-temperature liquid in the condenser. After that, this liquid enters the filter and passes through the throttling device, etc., and is throttled in the capillary tube to become a low-temperature and low-pressure refrigerant at equal enthalpy. After that, this low-temperature and low-pressure refrigerant boils in the isobaric evaporator and absorbs a large amount of external heat to become a gas, realizing the refrigeration process. Finally, the refrigerant is sucked into the compressor 10 again for the refrigeration cycle.

[0079] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A pump body for a compressor, characterized in that: include: a cylinder including opposing first and second ends; A main bearing, disposed at a first end of the cylinder; The auxiliary bearing is disposed at the second end of the cylinder and defines a compression space for compressing the refrigerant together with the main bearing and the cylinder; An exhaust assembly is arranged on the side of the main bearing away from the cylinder, comprising a valve seat and a valve plate, one end of the valve seat and the valve plate are both connected to the main bearing and a fixed portion is formed at the connection, and the valve plate is arranged on the side of the valve seat away from the cylinder; the other end of the valve seat is provided with an exhaust hole penetrating the thickness thereof, the exhaust hole is configured to communicate with the compression space and the space on the side of the main bearing away from the cylinder, and the valve plate is configured to move between a position close to the exhaust hole and a position away from the exhaust hole to close or open the exhaust hole; The depth of the exhaust hole gradually decreases in a direction approaching the fixing portion.

2. The pump body according to claim 1, characterized in that: The valve seat includes: The first side, towards the cylinder; A second side, facing away from the cylinder and disposed opposite to the first side, includes a first inclined section; The first side coincides with the horizontal plane, the exhaust hole is arranged in the first inclined section, and the first inclined section is inclined downward in a direction close to the fixing portion.

3. The pump body according to claim 2, characterized in that: The angle between the first inclined section and the horizontal plane is a, where 0° <a≤30°。 4. The pump body according to claim 1, characterized in that: The exhaust assembly also includes: The baffle is arranged on the side of the valve sheet away from the exhaust hole, one end of which is connected to the fixing part and the other end of which is provided with a second inclined section; The second inclined section corresponds to the exhaust hole, and along the direction close to the fixing portion, the second inclined section is inclined toward the direction where the cylinder is located.

5. The pump body according to claim 4, characterized in that: The angle between the second inclined section and the horizontal plane is b, where 0° <b≤30°。 6. The pump body according to claim 4, characterized in that: The distance from the center of the side surface of the exhaust hole facing away from the cylinder to the center of the side surface of the second inclined section facing the valve plate is the lift height h, and the displacement of the compressor is n, where h≥n / 5.

7. The pump body according to claim 4, characterized in that: The bezel also includes: The arc segment has one end connected to the fixing portion and the other end connected to the second inclined segment, and is bent in a direction away from the cylinder.

8. The pump body according to any one of claims 1 to 7, characterized in that: The diameter of the exhaust hole is d, and the displacement of the compressor is n, where 9. A compressor, characterized in that: include: case; The pump body according to any one of claims 1 to 8 is arranged in a housing.

10. A refrigeration device, characterized in that: include: A refrigeration system for refrigeration, comprising the compressor according to claim 9.

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