Pump structures, compressors and air conditioners

Abstract

The present application provides a pump body structure, a compressor, and an air conditioner. The pump body structure comprises a cylinder (1) and a flange, wherein the flange has an air intake hole (2) and a sealed cavity (3), the cylinder (1) has an air intake cavity and a compression cavity, and the flange has a partition wall on the side close to the cylinder (1). A preset interval is formed between the sealed cavity (3) and the cylinder (1) by the partition wall, and a connecting hole (4) is provided on the partition wall. The sealed cavity (3) is connected to the air intake cavity through the connecting hole (4), and the refrigerant can enter the sealed cavity (3) through the air intake hole (2), and then enter the air intake cavity through the sealed cavity (3) and the connecting hole (4). According to the pump body structure of the present application, the influence of the heat generated during the exhaust process on the air intake can be reduced, the volumetric efficiency of compression can be guaranteed, and the energy efficiency of the compressor can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a pump body structure, a compressor and an air conditioner. Background Art

[0002] Rolling rotor compressors are increasingly used in air conditioners, heat pump water heaters, refrigeration equipment, car air conditioners and other fields due to their simple structure, low cost and high reliability.

[0003] The primary function of a rolling rotor compressor in air conditioners is to cyclically compress the refrigerant, converting low-temperature, low-pressure refrigerant into high-temperature, high-pressure refrigerant, which then circulates within the air conditioner. During this cyclic compression and exhaust process, the high-temperature, high-pressure gas within the pump body and the heat generated during the compression and exhaust process heat the low-temperature, low-pressure gas in the intake pipe. This results in the gas entering the cylinder having a higher temperature and pressure than expected, reducing intake volume, degrading the pump's volumetric efficiency, and lowering the compressor's energy efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present application is to provide a pump body structure, a compressor and an air conditioner that can reduce the impact of the heat generated during the exhaust process on the intake air, ensure the volumetric efficiency of compression, and improve energy efficiency.

[0005] In order to solve the above problems, the present application provides a pump body structure, including a cylinder and a flange, the flange has an intake hole and a sealing cavity, the cylinder has an intake cavity and a compression cavity, the flange has a partition wall close to the cylinder side, a preset gap is formed between the sealing cavity and the cylinder through the partition wall, a connecting hole is provided on the partition wall, the sealing cavity is connected with the intake cavity through the connecting hole, and the refrigerant can enter the sealing cavity through the intake hole, and then enter the compression cavity through the sealing cavity and the connecting hole.

[0006] Preferably, on a cross section perpendicular to the central axis of the flange, the line between the center of the communicating hole and the center of the flange is the first structural line, the center line of the suction hole is the second structural line, and the angle between the first structural line and the second structural line is greater than 90°.

[0007] Preferably, the angle between the first construction line and the second construction line is 160° to 170°.

[0008] Preferably, a throttling structure is provided in the sealed cavity, the throttling structure is located on the refrigerant flow path between the air suction hole and the communicating hole, and a throttling hole is provided on the throttling structure.

[0009] Preferably, the throttling structure is a throttling baffle.

[0010] Preferably, the throttling structure is integrally formed with the flange, or the throttling structure is fixedly installed in the sealing cavity.

[0011] Preferably, a groove is provided on a side of the flange away from the cylinder, and a cover plate is fixedly provided on the side of the flange where the groove is provided. The cover plate is sealed in cooperation with the flange, so that the groove forms a sealed cavity.

[0012] Preferably, the flange includes an upper flange and a lower flange. When the sealing chamber is arranged on the lower flange, the pump body structure is upward exhaust. When the sealing chamber is arranged on the upper flange, the pump body structure is downward exhaust.

[0013] Preferably, the refrigerant entering the sealed cavity through the air suction hole is a liquid refrigerant.

[0014] According to another aspect of the present application, a compressor is provided, comprising a pump body structure, which is the above-mentioned pump body structure.

[0015] According to another aspect of the present application, an air conditioner is provided, comprising the above-mentioned pump structure or compressor.

[0016] The present application provides a pump body structure, comprising a cylinder and a flange, wherein the flange has an air intake hole and a sealed cavity, the cylinder has an air intake cavity and a compression cavity, the flange has a partition wall on the side close to the cylinder, a predetermined interval is formed between the sealed cavity and the cylinder by the partition wall, a connecting hole is provided on the partition wall, the sealed cavity is connected to the air intake cavity through the connecting hole, and refrigerant can enter the sealed cavity through the air intake hole, and then enter the compression cavity through the sealed cavity and the connecting hole. The pump body structure adjusts the air intake hole from the cylinder to the flange, and makes the sealed cavity on the flange and the cylinder separated by a certain distance through the partition wall, and the sealed cavity and the cylinder air intake cavity are connected through the connecting hole. While ensuring normal air intake of the cylinder, the air intake hole on the flange can be separated from the original air intake hole on the cylinder, thereby increasing the distance between the air intake hole on the flange and the original air intake hole on the cylinder, reducing the heating effect of the heat generated during the compressor exhaust process on the low-temperature and low-pressure refrigerant in the intake pipe, so that the refrigerant entering the flange through the intake pipe can maintain a low-temperature and low-pressure state, ensuring the volumetric efficiency of compression, and improving the energy efficiency of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a compressor according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the refrigerant flow structure of the pump body structure of one embodiment of the present application;

[0019] Figure 3 This is a diagram showing the refrigerant flow structure in the lower flange of the pump body structure according to one embodiment of the present application;

[0020] Figure 4 This is a schematic structural diagram of the lower flange of the pump body structure according to one embodiment of the present application;

[0021] Figure 5 This is a three-dimensional structural diagram of the lower flange of the pump body structure of an embodiment of the present application.

[0022] The reference numerals indicate:

[0023] 1. Cylinder; 2. Intake hole; 3. Sealing chamber; 4. Connecting hole; 5. Throttle baffle; 6. Throttle hole; 7. Cover plate; 8. Upper flange; 9. Lower flange. DETAILED DESCRIPTION

[0024] In the related technology, the low-temperature and low-pressure refrigerant coming out of the refrigeration system directly enters the low-pressure suction chamber through the suction hole on the cylinder. Because the gas is directly sucked into the cylinder, the refrigerant is easily heated during the suction process. After the gas is heated, the volume of the gas will increase. Therefore, when the gas is sucked into the suction chamber, the temperature, pressure and volume of the refrigerant will be higher than expected. This will cause the suction volume of the compressor to become lower during operation, the volumetric efficiency to decrease, and indirectly lead to a decrease in the energy efficiency of the compressor.

[0025] To solve this problem, refer to Figures 1 to 5 As shown, according to an embodiment of the present application, the pump body structure includes a cylinder 1 and a flange, the flange has an intake hole 2 and a sealing chamber 3, the cylinder 1 has an intake chamber and a compression chamber, the flange has a partition wall on the side close to the cylinder 1, and a preset interval is formed between the sealing chamber 3 and the cylinder 1 through the partition wall. A connecting hole 4 is provided on the partition wall, and the sealing chamber 3 is connected with the intake chamber through the connecting hole 4. The refrigerant can enter the sealing chamber 3 through the intake hole 2, and then enter the intake chamber through the sealing chamber 3 and the connecting hole 4.

[0026] The pump body structure adjusts the suction hole 2 from the cylinder 1 to the flange, and makes the sealing cavity 3 on the flange and the cylinder 1 separated by a certain distance through a partition wall, and the sealing cavity 3 and the suction cavity of the cylinder 1 are connected through a connecting hole 4. While ensuring the normal suction of the cylinder 1, the suction hole 2 on the flange can be away from the original suction hole 2 on the cylinder 1, thereby increasing the distance between the suction hole 2 on the flange and the original suction hole 2 on the cylinder 1, making it difficult for the refrigerant to be heated in the process of entering the sealing cavity 3 through the suction hole 2, reducing the heating effect of the heat generated during the exhaust process of the compressor on the low-temperature and low-pressure refrigerant in the suction pipe, so that the refrigerant entering the flange through the suction pipe can maintain a low-temperature and low-pressure state, ensuring the volumetric efficiency of compression and improving the energy efficiency of the compressor.

[0027] In one embodiment, on a cross section perpendicular to the central axis of the flange, the line between the center of the connecting hole 4 and the center of the flange is the first construction line, the center line of the suction hole 2 is the second construction line, and the angle between the first construction line and the second construction line is greater than 90°.

[0028] As a preferred embodiment, the angle between the first construction line and the second construction line is 160° to 170°. When the angle is 170°, the effect is best.

[0029] In one embodiment, the flange includes an upper flange 8 and a lower flange 9. When the sealed chamber 3 is disposed on the lower flange 9, the pump body structure is top exhaust. When the sealed chamber 3 is disposed on the upper flange 8, the pump body structure is bottom exhaust. In this embodiment, the sealed chamber 3 is disposed on the lower flange 9, and the pump body structure is top exhaust.

[0030] As a preferred embodiment, the refrigerant entering the sealed cavity 3 through the air suction hole 2 is a liquid refrigerant.

[0031] In this embodiment, the pump body structure is modified, the suction hole on the cylinder 1 is cancelled, the suction hole 2 is opened to the lower flange 9, and a connecting hole 4 is set at the bottom of the cylinder 1 and the large plane of the lower flange 9. The two positions overlap, and the center line projection of the original cylinder suction hole coincides with the center line projection of the connecting hole 4 on the lower flange 9. The angle between the first construction line and the second construction line is 160°~170°, which means that the angle between the center line of the suction hole 2 on the lower flange 9 and the center line of the suction hole on the original cylinder is 160°~170°. At the same time, as a preferred embodiment, the sealing chamber 3 is an annular chamber.

[0032] The angle between the center line of the air intake hole 2 on the lower flange 9 and the center line of the air intake hole on the original cylinder is 160°~170°, which can make the air intake hole 2 and the connecting hole 4 staggered with the rivet hole to avoid structural conflict. At the same time, it can also make the air intake hole 2 on the lower flange 9 staggered as much as possible from the air intake position of the cylinder 1 to ensure that the refrigerant has the largest heat exchange area during the flow process.

[0033] In one embodiment, a groove is provided on the side of the flange away from the cylinder 1. A cover plate 7 is fixedly provided on the side of the flange where the groove is provided. The cover plate 7 seals with the flange, forming a sealed cavity 3 in the groove. In this embodiment, the groove is provided on the side away from the cylinder 1. On the one hand, it can prevent the refrigerant from directly contacting the cylinder 1 during flow, which could lead to heat transfer problems. On the other hand, by controlling the thickness of the bottom of the flange groove, it can effectively isolate the heat transfer between the cylinder 1 and the flange, reducing the impact of the heat from the pump body on the suction temperature. In addition, the groove is open on one side. The use of the cover plate 7 to fix and seal the flange makes it easier to process the groove and reduces the processing difficulty.

[0034] In one embodiment, a throttling structure is provided in the sealed cavity 3. The throttling structure is located on the refrigerant flow path between the air intake hole 2 and the connecting hole 4. The throttling structure is provided with a throttling hole 6. In this embodiment, by providing the throttling structure in the sealed cavity 3, the space inside the sealed cavity 3 can be divided into two halves. At the same time, the throttling hole 6 is provided on the throttling structure, and the throttling hole 6 can be used to throttle the refrigerant flowing from the air intake hole 2 to the connecting hole 4. In this way, the liquid refrigerant entering the sealed cavity 3 will be converted into a gaseous refrigerant through throttling in the sealed cavity 3 of the flange, and then enter the cylinder 1 through the connecting hole 4, effectively avoiding the liquid hammer phenomenon caused by the uncontrollable amount of liquid refrigerant entering the cylinder during the refrigerant liquid carrying process.

[0035] In one embodiment, the throttling structure is a throttling baffle 5. In this embodiment, a throttling baffle 5 is provided in each channel of the sealed cavity 3 to ensure that the refrigerant enters the cylinder 1 only after being throttled by the throttling baffle 5. Using the throttling baffle 5 as the throttling structure has a simpler structure, is more convenient to manufacture, has lower manufacturing costs, and is easier to implement.

[0036] In one embodiment, the throttling structure is integrally formed with the flange.

[0037] In one embodiment, the throttling structure is fixedly installed in the sealed chamber 3 .

[0038] The working process of the pump body structure is described below by taking the sealing chamber 3 arranged on the lower flange 9 as an example.

[0039] During the process of suctioning through the suction hole 2 on the lower flange 9, the refrigerant can be made to carry liquid by adjusting the working conditions. The liquid refrigerant is sucked into the lower flange 9 through the suction hole 2. Since the lower flange 9 and the cover plate 7 are sealed to form a sealed cavity 3, the liquid refrigerant will enter the cavity of the sealed cavity 3. Since the lower flange 9 is connected to the cylinder 1 through the connecting hole 4, the refrigerant passes through the lower flange 9. Figure 3 In the motion trajectory shown, the refrigerant will be heated by the pump body. During this process, the liquid refrigerant is vaporized into a low-temperature, low-pressure gas, ensuring the required suction temperature and suction pressure, increasing the suction volume, and effectively reducing the useless work done by cylinder 1 due to the excessive gas volume during operation, thereby improving the volumetric efficiency of the compressor.

[0040] In addition, since the projection of the center line of the flange suction position and the center line of the connecting hole 4 is 160°~170°, the heat exchange area is increased in the process of the refrigerant from the suction pipe to the connecting hole 4, so that the gas entering the suction side is a low-temperature and low-pressure gas. In the process of heating the refrigerant, the heat of the cylinder 1 can also be reduced, and the problems of lubricating oil coking and excessive pump body temperature caused by high temperature can be reduced, so as to achieve the purpose of increasing the suction volume, ensure the volumetric efficiency of compression, and improve the working energy efficiency of the compressor.

[0041] When the projection of the center line of the flange suction position and the center line of the communicating hole 4 is 160° to 170°, the structural performance parameters of the compressor of the embodiment of the present application and the compressor of the related art are compared as shown in the following table:

[0042]

[0043] It can be seen from the above table that after adopting the pump body structure of the embodiment of the present application, the APF (Annual Performance Factor) comprehensive energy efficiency of the compressor is improved by 1.5%, and the energy efficiency is significantly improved.

[0044] According to an embodiment of the present application, the compressor includes a pump body structure, which is the above-mentioned pump body structure.

[0045] In this compressor, the outer circle of the roller fits tightly with the head of the sliding vane, so that the cavity formed by the inner circle of the cylinder 1 and the outer circle of the roller is divided into two by the sliding vane, forming an intake chamber and a compression chamber. The low-temperature and low-pressure refrigerant from the refrigeration system passes through the lower flange 9, and then enters the intake low-pressure chamber through the connecting hole 4 between the lower flange 9 and the cylinder 1. Driven by the motor rotor, the crankshaft rotates synchronously, and the roller on the eccentric part of the crankshaft also rotates accordingly. The low-temperature and low-pressure refrigerant in the intake low-pressure chamber of the cylinder 1 is gradually compressed under the change of volume, and then after being compressed into a high-temperature and high-pressure refrigerant, it flows from the oblique cut of the compression high-pressure chamber of the cylinder 1 through the flange exhaust hole and is discharged after the valve plate is opened, and finally returns to the refrigeration system, completing the refrigerant compression process of the entire refrigeration cycle.

[0046] According to an embodiment of the present application, an air conditioner includes the above-mentioned pump structure or the above-mentioned compressor.

[0047] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0048] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A pump body structure, characterized in that: The invention comprises a cylinder (1) and a flange, wherein the flange has an air intake hole (2) and a sealing cavity (3), the cylinder (1) has an air intake cavity and a compression cavity, the flange has a partition wall on the side close to the cylinder (1), a preset interval is formed between the sealing cavity (3) and the cylinder (1) through the partition wall, a connecting hole (4) is provided on the partition wall, the sealing cavity (3) is connected with the air intake cavity through the connecting hole (4), and the refrigerant can enter the sealing cavity (3) through the air intake hole (2), and then enter the air intake cavity through the sealing cavity (3) and the connecting hole (4); a throttling structure is provided in the sealing cavity (3), the throttling structure is located on the refrigerant flow path between the air intake hole (2) and the connecting hole (4), a throttling hole (6) is provided on the throttling structure, and the refrigerant entering the sealing cavity (3) through the air intake hole (2) is a liquid refrigerant; The flange comprises an upper flange (8) and a lower flange (9); when the sealed cavity (3) is arranged on the lower flange (9), the pump body structure is upper exhaust; when the sealed cavity (3) is arranged on the upper flange (8), the pump body structure is lower exhaust.

2. The pump structure according to claim 1, characterized in that: On a cross section perpendicular to the central axis of the flange, a line connecting the center of the communicating hole (4) and the center of the flange is a first construction line, a center line of the air intake hole (2) is a second construction line, and an angle between the first construction line and the second construction line is greater than 90°.

3. The pump structure according to claim 2, characterized in that: The angle between the first construction line and the second construction line is 160° to 170°.

4. The pump structure according to claim 1, characterized in that: The throttling structure is a throttling baffle (5).

5. The pump structure according to claim 1, characterized in that: The throttling structure is integrally formed with the flange, or the throttling structure is fixedly installed in the sealing cavity (3).

6. The pump structure according to claim 1, characterized in that: A groove is provided on a side of the flange away from the cylinder (1), and a cover plate (7) is fixedly provided on the side of the flange where the groove is provided. The cover plate (7) is sealed with the flange so that the groove forms the sealed cavity (3).

7. A compressor, comprising a pump body structure, characterized in that: The pump body structure is the pump body structure according to any one of claims 1 to 6.

8. An air conditioner, characterized in that: The invention comprises the pump body structure according to any one of claims 1 to 6 or the compressor according to claim 7.

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