Pump assemblies, compressors and air conditioners

Abstract

The present application provides a pump body assembly, a compressor and an air conditioner, comprising a cylinder and a roller, wherein the roller is arranged in the cylinder and can move circumferentially along the inner wall of the cylinder, and at least one silencer cavity is arranged on the side wall of the roller, and the opening of the silencer cavity is a first opening, and an exhaust port is arranged on the inner wall of the cylinder, and when the silencer cavity moves to the exhaust port, the first opening is aligned with the exhaust port, and the silencer cavity is communicated with the exhaust port. A pump body assembly provided in an embodiment of the present application can effectively improve the cylinder exhaust clearance volume and improve the compressor capacity.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning, and specifically relates to a pump assembly, a compressor and an air conditioner. Background Art

[0002] A compressor is a device that raises low-pressure gas to high-pressure gas. Under the compression of the compressor, the gas forms high-temperature and high-pressure gas, which generates strong impact force and air flow pulsation during the exhaust process, causing a lot of noise. In order to solve the noise in the exhaust process, the current method is to set a resonance cavity in the exhaust port of the cylinder. Although it can effectively reduce the noise peak of certain frequency bands, the increase in the clearance volume causes the attenuation of the compressor capacity. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present application is to provide a pump body assembly, a compressor and an air conditioner, which can effectively improve the cylinder exhaust clearance volume and enhance the compressor capacity.

[0004] In order to solve the above problems, the present application provides a pump body assembly, including a cylinder and a roller, wherein the roller is arranged in the cylinder and can move circumferentially along the inner wall of the cylinder, and at least one silencing chamber is arranged on the side wall of the roller, and the opening of the silencing chamber is a first opening. An exhaust port is arranged on the inner wall of the cylinder, and when the silencing chamber moves to the exhaust port, the first opening is aligned with the exhaust port, and the silencing chamber is communicated with the exhaust port.

[0005] Preferably, the silencer cavity is a symmetrical structure, and the symmetry axis of the silencer cavity is a first symmetry axis, and the first symmetry axis extends along the radial direction of the roller.

[0006] Preferably, the exhaust port comprises an exhaust inlet, an exhaust channel and an exhaust outlet which are connected in sequence; when the silencing chamber moves to the exhaust port, the first opening is aligned with the exhaust inlet; the exhaust channel has a symmetrical structure; the symmetry axis of the exhaust channel is the second symmetry axis, and the second symmetry axis is arranged at an obtuse angle to the first symmetry axis.

[0007] Preferably, a sliding plate is slidably provided on the cylinder, a first end of the sliding plate is connected to the roller, and an opening of an obtuse angle formed by the second symmetry axis and the first symmetry axis faces a side away from the sliding plate.

[0008] Preferably, the first end of the sliding sheet is hinged to the roller.

[0009] Preferably, the silencing chamber comprises a first chamber, a silencing channel and a second chamber which are connected in sequence, and the first opening is located on the second chamber.

[0010] Preferably, the plane in which the first symmetry axis and the second symmetry axis jointly lie is the first plane, the projection of the exhaust inlet in the first plane includes an arc segment, and the radius of the arc segment is R1, the length of the exhaust channel along the first direction is B1, and the length of the exhaust channel along the second direction is H1, the projection of the second chamber in the first plane is an arc, and the radius of the arc is R2, the length of the silencer channel along the first direction is B2, and the length of the silencer channel along the second direction is H2, R2=1 / 3R1, H2=1 / 3H1.

[0011] Preferably, H2 is 0.5-1 mm and B2 is 1-2 mm.

[0012] Another aspect of the present invention provides a compressor, comprising the above-mentioned pump body assembly.

[0013] Another aspect of the present invention provides an air conditioner, comprising the above-mentioned pump body assembly.

[0014] Beneficial Effects

[0015] A pump body assembly provided in an embodiment of the present invention can effectively improve the cylinder exhaust clearance volume and enhance the compressor capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0017] Figure 2 for Figure 1 A partial enlarged view of

[0018] Figure 3 A schematic diagram of the structure of a roller according to an embodiment of the present application;

[0019] Figure 4 for Figure 3 A partial enlarged view of

[0020] Figure 5 A schematic diagram of characteristic angles of a compressor according to an embodiment of the present application;

[0021] Figure 6 This is a graph showing the compressor working volume and gas pressure changing with the rotation angle according to an embodiment of the present application.

[0022] The reference numerals are:

[0023] 1. Roller; 11. First chamber; 12. Silence channel; 13. Second chamber; 2. Cylinder; 21. Exhaust inlet; 22. Exhaust channel; 23. Exhaust outlet; 3. Sliding vane; φ, exhaust start angle; γ is the rear edge angle; β, compression start angle; α, intake start angle; λ, rotation angle. DETAILED DESCRIPTION

[0024] See also Figures 1 to 6 As shown, according to an embodiment of the present application, a pump body assembly includes a cylinder 2 and a roller 1, the roller 1 is arranged in the cylinder 2 and can move circumferentially along the inner wall of the cylinder 2, at least one silencer cavity is arranged on the side wall of the roller 1, the opening of the silencer cavity is a first opening, and an exhaust port is arranged on the inner wall of the cylinder 2. When the silencer cavity moves to the exhaust port, the first opening is aligned with the exhaust port, and the silencer cavity is communicated with the exhaust port, so that the silencer cavity has the function of replenishing air and recovering gas, and has the function of reducing the exhaust clearance, which can effectively improve the exhaust clearance volume of the cylinder 2 and improve the capacity of the compressor.

[0025] Furthermore, the roller 1 is sleeved on the crankshaft of the compressor, and the crankshaft drives the roller 1 to perform periodic circular motion in the cylinder 2 to compress the gas in the cylinder 2. In this embodiment, the roller 1 performs periodic circular motion in the cylinder 2, but the roller 1 does not rotate relative to the crankshaft, that is, the roller 1 does not rotate on its own, so as to ensure that the roller 1 can align the first opening with the exhaust port in each cycle.

[0026] The silencer cavity is a symmetrical structure, and the symmetry axis of the silencer cavity is a first symmetry axis, which extends along the radial direction of the roller 1. By setting the silencer cavity as a symmetrical structure, it is possible to ensure that the silencer cavity has the best silencing effect.

[0027] Furthermore, the silencer cavity is a rotationally symmetrical structure.

[0028] The exhaust port includes an exhaust inlet 21, an exhaust channel 22 and an exhaust outlet 23 which are connected in sequence. When the silencing chamber moves to the exhaust port, the first opening is aligned with the exhaust inlet 21. The exhaust channel 22 has a symmetrical structure. The symmetry axis of the exhaust channel 22 is the second symmetry axis. The second symmetry axis is set at an obtuse angle to the first symmetry axis. By setting the second symmetry axis to an obtuse angle with the first symmetry axis, a pressure difference can be formed between the gas in the silencing chamber and the gas at the exhaust port, thereby maintaining a low-pressure chamber state.

[0029] A slide vane 3 is slidably arranged on the cylinder 2, and the first end of the slide vane 3 is connected to the roller 1. The opening of the obtuse angle formed by the second symmetry axis and the first symmetry axis faces the side away from the slide vane 3, ensuring that the exhaust port does not interfere with the slide vane 3, thereby ensuring a smaller clearance space.

[0030] The first end of the slide 3 is hinged on the roller 1, which ensures that the roller 1 can align the first opening with the exhaust port in each cycle.

[0031] Further, such as Figure 5As shown, φ is the exhaust start angle, λ is the rotation angle, and exhaust starts when λ=4π+φ. The gas in cylinder 2 is compressed. During the compression process, the gas in the muffler chamber flows back into the compression chamber, and the pressure of the elementary volume itself is slightly higher than the pressure in the exhaust pipe. Compared with the traditional compressor, the gas flowing back into the compression chamber will overcome the exhaust valve resistance in advance and do work to push open the exhaust valve plate, so the exhaust resistance will be greatly reduced.

[0032] Furthermore, γ is the rear edge angle, and the rotation angle λ changes from 2π+φ to 4π-γ. When exhaust is completed, Figure 6 As shown, β is the compression start angle, and α is the suction start angle. The volume between 2π+φ and 4π-γ is the clearance volume, and the pressure is relatively high. When λ changes from 4π-γ to 4π-φ, it is the gas expansion process in the clearance volume, which is connected to the exhaust port of the low-pressure elementary volume behind it, so that the suction volume is reduced, and the expansion work of the high-pressure gas cannot be recovered. After the silencer cavity is opened in roller 1, part of the expansion work of the clearance volume will be recovered to reduce the suction resistance. The high-temperature and high-pressure gas in the silencer cavity enters the low-pressure elementary volume in advance during the movement of roller 1. Since the temperature of the high-temperature and high-pressure gas in the silencer cavity is slightly higher than that of the newly inhaled gas, part of the liquid in it will be integrated, greatly reducing the liquid hammer phenomenon during the gas compression process.

[0033] The silencing chamber includes a first chamber 11, a silencing channel 12 and a second chamber 13 which are connected in sequence. The first opening is located on the second chamber 13. The first chamber 11, the silencing channel 12 and the second chamber 13 are arranged at the same time, which ensures that the silencing chamber has a good silencing effect.

[0034] Furthermore, the roller 1 is roughly annular, the first chamber 11, the silencer channel 12 and the second chamber 13 are coaxially arranged, the first chamber 11 is located on a side close to the center of the roller 1, and the first opening of the second chamber 13 is located on the side wall of the roller 1.

[0035] Furthermore, the length of the first chamber 11 along the circumferential direction of the roller 1 is greater than the length of the second chamber 13 along the circumferential direction of the roller 1 , and is greater than the length of the muffler channel 12 along the circumferential direction of the roller 1 .

[0036] The plane where the first axis of symmetry and the second axis of symmetry lie together is the first plane, the projection of the exhaust inlet 21 in the first plane includes an arc segment, and the radius of the arc segment is R1, the length of the exhaust channel 22 along the first direction is B1, and the length of the exhaust channel 22 along the second direction is H1, the projection of the second chamber 13 in the first plane is an arc, and the radius of the arc is R2, the length of the muffler channel 12 along the first direction is B2, and the length of the muffler channel 12 along the second direction is H2, R2=1 / 3R1, H2=1 / 3H1.

[0037] When no silencer cavity is provided at the exhaust port, H2 is 0.5-1mm and B2 is 1-2mm, the exhaust effect is optimal, and no additional clearance volume is generated.

[0038] The traditional pump body assembly changes the clearance volume by controlling the rear edge angle γ. In this embodiment, after the silencer cavity is opened on the roller 1, part of the high-pressure gas can be brought into the next cycle process. Therefore, the γ angle can be reduced by about 5 degrees compared with the traditional 30-35 degree design, and the utilization rate of the cylinder 2 can be increased by about 10%.

[0039] Another aspect of the present embodiment provides a compressor including the above-mentioned pump body assembly.

[0040] Another aspect of the present embodiment provides an air conditioner including the above-mentioned pump body assembly.

[0041] A pump body assembly provided in an embodiment of the present invention can effectively improve the exhaust clearance volume of the cylinder 2 and enhance the compressor capacity.

[0042] 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.

[0043] The above are only 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 in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A pump assembly, characterized in that: The invention comprises a cylinder (2) and a roller (1), wherein the roller (1) is arranged in the cylinder (2) and is capable of circumferentially moving along the inner wall of the cylinder (2), at least one silencer cavity is arranged on the side wall of the roller (1), the opening of the silencer cavity is a first opening, and an exhaust port is arranged on the inner wall of the cylinder (2), and when the silencer cavity moves to the exhaust port, the first opening is aligned with the exhaust port, and the silencer cavity is in communication with the exhaust port; The silencer cavity is a symmetrical structure, the symmetry axis of the silencer cavity is a first symmetry axis, and the first symmetry axis extends along the radial direction of the roller (1); The exhaust port comprises an exhaust inlet (21), an exhaust channel (22) and an exhaust outlet (23) which are connected in sequence; when the muffler cavity moves to the exhaust port, the first opening is aligned with the exhaust inlet (21); the exhaust channel (22) has a symmetrical structure; the symmetry axis of the exhaust channel (22) is a second symmetry axis, and the second symmetry axis is arranged at an obtuse angle to the first symmetry axis.

2. The pump assembly according to claim 1, characterized in that: A sliding plate (3) is slidably arranged on the cylinder (2), a first end of the sliding plate (3) is connected to the roller (1), and an opening of an obtuse angle formed by the second symmetry axis and the first symmetry axis faces a side away from the sliding plate (3).

3. The pump assembly according to claim 2, characterized in that: The first end of the sliding plate (3) is hinged on the roller (1).

4. The pump assembly according to claim 1, characterized in that: The silencing chamber comprises a first chamber (11), a silencing channel (12) and a second chamber (13) which are connected in sequence, and the first opening is located on the second chamber (13).

5. The pump assembly according to claim 4, characterized in that: The plane in which the first symmetry axis and the second symmetry axis are located together is a first plane, the projection of the exhaust inlet (21) in the first plane includes an arc segment, and the radius of the arc segment is R1, the length of the exhaust channel (22) along the first direction is B1, and the length of the exhaust channel (22) along the second direction is H1, the projection of the second chamber (13) in the first plane is an arc, and the radius of the arc is R2, the length of the muffler channel (12) along the first direction is B2, and the length of the muffler channel (12) along the second direction is H2, R2=1 / 3R1, H2=1 / 3H1.

6. The pump assembly according to claim 5, characterized in that: H2 is 0.5-1mm and B2 is 1-2mm.

7. A compressor, characterized in that: Comprising a pump body assembly as described in any one of claims 1-6.

8. An air conditioner, characterized in that: Comprising a pump body assembly as described in any one of claims 1-6.

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