Pump assemblies, compressors and air conditioners

Abstract

The present application provides a pump body assembly, a compressor and an air conditioner, comprising a compression part and an oil channel; the compression part comprises a compression chamber, and the compression chamber comprises an air intake port; at least a portion of the oil channel is arranged on the compression part to lubricate the compression part, and the oil channel comprises a cooling section, and the refrigerant flowing through the air intake port can exchange heat with the oil flowing through the cooling section to cool the oil flowing through the cooling section. A pump body assembly provided in an embodiment of the present application can reduce the temperature of the oil in the oil channel, so that the oil can be lubricated and cooled in a good state.

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] The internal oil circulation channels of existing high-pressure chamber scroll compressors all supply the oil at the bottom of the compressor to the top pump body of the compressor through the oil supply parts to lubricate the surface of the pump body. After the high-pressure chamber compressor has been running for a period of time, the oil temperature at the bottom of the oil pool will be affected by the compressor compression and motor temperature. As the oil temperature rises, the viscosity of the oil decreases, resulting in a decrease in the lubrication effect. 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 reduce the oil temperature in the oil channel so that the oil can be lubricated and cooled in a good state.

[0004] In order to solve the above problems, the present application provides a pump body assembly, including a compression part and an oil channel;

[0005] The compression part includes a compression chamber, and the compression chamber includes an air suction port;

[0006] At least a portion of the oil channel is arranged on the compression part to lubricate the compression part. The oil channel includes a cooling section. The refrigerant flowing through the air intake port can exchange heat with the oil flowing through the cooling section to cool the oil flowing through the cooling section.

[0007] Preferably, the cooling section is arranged in a circumferential direction of the air intake port.

[0008] Preferably, the cooling section comprises an oil storage tank, the oil storage tank is arc-shaped, and the oil storage tank is arranged in the circumferential direction of the air intake port.

[0009] Preferably, the oil storage tank comprises an inlet and a discharge port, and the cross-sectional area of ​​the inlet and the cross-sectional area of ​​the discharge port are smaller than the cross-sectional area of ​​the oil storage tank.

[0010] Preferably, the oil channel further comprises a connecting section, the connecting section is arranged on the compression part, the connecting section is located at the upstream side of the cooling section along the oil flow direction, and a throttling member is arranged in the connecting section.

[0011] Preferably, the oil channel further includes a medium-pressure zone oil groove and a high-pressure zone oil groove, and the medium-pressure zone oil groove and the high-pressure zone oil groove are arranged on the compression part and are located on the downstream side of the cooling section along the oil flow direction.

[0012] Preferably, the medium-pressure zone oil groove and the high-pressure zone oil groove are arc-shaped, and the medium-pressure zone oil groove and the high-pressure zone oil groove are arranged along the circumference of the compression chamber.

[0013] Preferably, the pump body assembly further includes an oil pumping portion, and the oil pumping portion is communicated with the oil channel to drive the oil to flow in the oil channel.

[0014] Preferably, the pump body assembly also includes a crankshaft, and the oil pump part includes an oil supply part, which is arranged on the crankshaft. The oil supply part is provided with a first channel and a second channel, the first channel is connected to the oil channel, and the second channel extends along the extension direction of the crankshaft.

[0015] Preferably, the oil channel further includes a drainage tube, one end of which is connected to the first channel, and the other end of which is connected to the connecting section.

[0016] Another aspect of the present invention provides a compressor, comprising the pump body assembly as described above.

[0017] Preferably, the compressor includes a shell and an oil pool. When the oil channel includes a drainage pipe and the cooling section includes an oil storage tank, at least a section of the drainage pipe is located outside the shell, and the oil outlet end of the drainage pipe penetrates into the shell from the side of the compression part away from the oil pool and is connected to the oil storage tank.

[0018] Another aspect of the present invention provides an air conditioner, comprising the pump assembly as described above.

[0019] Beneficial Effects

[0020] A pump assembly, a compressor and an air conditioner provided in the embodiments of the present invention can reduce the temperature of the oil in the oil channel so that the oil can be lubricated and cooled in a good state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a pump assembly according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a bracket according to an embodiment of the present application;

[0023] Figure 3 A first structural schematic diagram of a static disk according to an embodiment of the present application;

[0024] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0025] Figure 5 for Figure 3 Sectional view at the middle BB;

[0026] Figure 6 A second structural schematic diagram of the static disk of the embodiment of the present application;

[0027] Figure 7 This is a schematic diagram of the structure of the oil supply component of an embodiment of the present application;

[0028] Figure 8 This is a schematic diagram of the structure of the throttling device according to an embodiment of the present application.

[0029] The reference numerals are:

[0030] 1. Compression chamber; 2. Static disk; 21. Intake port; 22. Oil storage tank; 23. Medium-pressure zone oil tank; 24. High-pressure zone oil tank; 3. Bracket; 31. Connecting section; 32. Throttle element; 4. Oil supply element; 41. First channel; 42. Oil storage area; 5. Drainage pipe; 6. Crankshaft. DETAILED DESCRIPTION

[0031] See also Figures 1 to 8 As shown, according to an embodiment of the present application, a pump body assembly includes a compression portion and an oil channel;

[0032] The compression part includes a compression chamber 1, and the compression chamber 1 includes an air intake port 21;

[0033] At least a portion of the oil channel is disposed on the compression part to lubricate the compression part, and the oil channel includes a cooling section, and the refrigerant flowing through the air intake port 21 can exchange heat with the oil flowing through the cooling section to cool the oil flowing through the cooling section. By arranging the cooling section near the air intake port 21, the air intake port 21 inhales a refrigerant with a relatively low temperature, so that the low-temperature refrigerant flowing through the air intake port 21 and the oil with a higher temperature flowing through the cooling section perform a liquid heat exchange, thereby cooling the oil. The cooled oil can ensure a good state to lubricate and cool the components in the compression part that need to be lubricated and cooled.

[0034] Furthermore, in this embodiment, the compression part includes a stator plate 2 and a bracket 3 , the stator plate 2 is disposed on the bracket 3 , and the cooling section is disposed on the stator plate 2 .

[0035] Furthermore, the low-temperature refrigerant flowing through the air intake 21 and the oil flowing through the cooling section indirectly transfer heat through the stator 2 .

[0036] Furthermore, the oil channel is not connected to the air intake port 21 .

[0037] Furthermore, the oil channel is connected to the compressor oil pool to form an oil circulation.

[0038] The cooling section is arranged in the circumferential direction of the air intake port 21, so as to increase the heat exchange area between the oil and the refrigerant.

[0039] The cooling section includes an oil storage tank 22 which is arc-shaped and arranged in the circumferential direction of the air intake port 21 so that the refrigerant flowing through the air intake port 21 can fully exchange liquid heat with the oil flowing through the cooling section.

[0040] Furthermore, in this embodiment, the curvature of the oil storage tank 22 is 180°, and the center of the air intake port 21 is located at the center of the circle where the oil storage tank 22 is located.

[0041] Furthermore, in this embodiment, the pump body assembly is in a single-layer flat wall state, and the formula obtained by transforming Fourier's law is: Where δ is the shortest distance between the oil tank 2 and the air intake 21, λ is the thermal conductivity of the material, △t is the temperature difference, and q is the heat flux density. Specifically, in order to achieve the purpose of cooling the oil, the temperature difference is set to 40°C, the heat consumption is 10000W / m2, the thermal conductivity of the cast iron material is 7.9W / (m·k), and the calculated thickness is 3.16mm.

[0042] The oil storage tank 22 includes an inlet and a discharge port. The cross-sectional areas of the inlet and the discharge port are smaller than the cross-sectional area of ​​the oil storage tank 22, so that the oil storage tank 22 has a larger volume and can ensure that the oil is fully cooled.

[0043] Furthermore, the inlet and the outlet are located on both sides of the oil storage tank 22 along the axial direction of the stator plate 2 .

[0044] The oil channel also includes a connecting section 31, which is arranged on the compression part. The connecting section 31 is located on the upstream side of the cooling section along the oil flow direction. A throttling device 32 is arranged in the connecting section 31. By setting the throttling device 32, the incoming oil can be guaranteed to be at a certain amount to avoid affecting the use of the system.

[0045] Further, such as Figure 8 As shown, the throttle element 32 has a helical structure.

[0046] Furthermore, the throttling member 32 is located at the inlet of the connecting section 31 .

[0047] The oil channel also includes a medium-pressure zone oil groove 23 and a high-pressure zone oil groove 24. The medium-pressure zone oil groove 23 and the high-pressure zone oil groove 24 are arranged on the compression part and are located on the downstream side of the cooling section along the oil flow direction. The medium-pressure zone oil groove 23 and the high-pressure zone oil groove 24 are arranged on the downstream side of the cooling section along the oil flow direction, so that the cooled oil can enter the medium-pressure zone oil groove 23 and the high-pressure zone oil groove 24, ensuring that the oil has good cooling and lubrication functions.

[0048] Furthermore, the medium-pressure zone oil groove 23 and the high-pressure zone oil groove 24 are located on the stator plate 2 .

[0049] The medium-pressure zone oil groove 23 and the high-pressure zone oil groove 24 are arc-shaped and are arranged along the circumference of the compression chamber 1 to ensure cooling and lubrication effects.

[0050] Furthermore, the arc-shaped openings formed by the medium-pressure zone oil groove 23 and the high-pressure zone oil groove 24 are arranged opposite to each other.

[0051] The pump body assembly also includes an oil pumping part, which is connected with the oil channel to drive the oil to flow in the oil channel.

[0052] The pump body assembly also includes a crankshaft 6, and the oil pumping part includes an oil supply member 4, which is arranged on the crankshaft 6. The oil supply member 4 is provided with a first channel 41 and a second channel, the first channel 41 is connected to the oil channel, and the second channel extends along the extension direction of the crankshaft 6. By providing the oil supply member 4, when the crankshaft 6 rotates, the crankshaft 6 drives the oil supply member 4 to start pumping oil, part of the oil enters the oil channel through the first channel 41, and part of the oil enters the second channel, so as to cool the crankshaft 6 and other components.

[0053] Furthermore, the first channel 41 is arranged perpendicular to the central axis of the crankshaft 6 .

[0054] Furthermore, an oil storage area 42 is provided in the oil supply member 4 , and the oil first enters the oil storage area 42 , and then enters the first channel 41 or the second channel from the oil storage area 42 .

[0055] Furthermore, the cooling and lubrication of the oil through the second channel in the crankshaft 6 belongs to the prior art and will not be described in detail here.

[0056] The oil channel further includes a drainage tube 5 , one end of which is connected to the first channel 41 , and the other end of which is connected to the connecting section 31 .

[0057] As an implementation mode, the inlet of the connecting section 31 is located on an end surface of the bracket 3 away from the stator 2 , and the drainage pipe 5 extends radially along the crankshaft 6 and then extends axially along the crankshaft 6 to the inlet of the connecting section 31 .

[0058] In another aspect of the present embodiment, a compressor is provided, comprising the pump body assembly as described above.

[0059] As another embodiment, the compressor includes a shell and an oil pool. When the oil channel includes a drainage pipe 5 and the cooling section includes an oil storage tank 22, at least a section of the drainage pipe 5 is located outside the shell, and the oil outlet end of the drainage pipe 5 penetrates into the shell from the side of the compression part away from the oil pool and is connected to the oil storage tank 22, thereby solving the problem of the drainage pipe 5 affecting other parts due to limited internal space of the compressor.

[0060] In this embodiment, the connecting section 31 is disposed on the static plate 2 . The connecting section 31 is located at the upstream side of the cooling section along the oil flow direction. The oil enters the oil storage tank 22 through the connecting section 31 .

[0061] Furthermore, the oil pool is arranged at the bottom of the compressor, that is, the oil outlet end of the drainage pipe 5 penetrates into the shell from the top and is connected with the oil storage tank 22.

[0062] In another aspect of the present embodiment, an air conditioner is provided, comprising the pump body assembly as described above.

[0063] A pump assembly, a compressor, and an air conditioner provided in the embodiments of the present application can reduce the temperature of the oil in the oil channel so that the oil can be lubricated and cooled in a good state.

[0064] 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.

[0065] 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: It includes a compression part and an oil channel; The compression part comprises a compression chamber (1), and the compression chamber (1) comprises an air intake port (21); At least a portion of the oil channel is arranged on the compression part to lubricate the compression part, and the oil channel includes a cooling section, and the refrigerant flowing through the air intake port (21) can exchange heat with the oil flowing through the cooling section to cool the oil flowing through the cooling section; the cooling section is arranged in the circumferential direction of the air intake port (21); the cooling section includes an oil storage tank (22), the oil storage tank (22) is arc-shaped, and the oil storage tank (22) is arranged in the circumferential direction of the air intake port (21); the oil storage tank (22) includes an inlet and an outlet, and the cross-sectional area of ​​the inlet and the cross-sectional area of ​​the outlet are smaller than the cross-sectional area of ​​the oil storage tank (22).

2. The pump assembly according to claim 1, characterized in that: The oil channel also includes a connecting section (31), the connecting section (31) is arranged on the compression part, the connecting section (31) is located on the upstream side of the cooling section along the oil flow direction, and a throttling member (32) is arranged in the connecting section (31).

3. The pump assembly according to claim 1, characterized in that: The oil channel also includes a medium-pressure zone oil groove (23) and a high-pressure zone oil groove (24), wherein the medium-pressure zone oil groove (23) and the high-pressure zone oil groove (24) are arranged on the compression part and are located on the downstream side of the cooling section along the oil flow direction.

4. The pump assembly according to claim 3, characterized in that: The medium-pressure zone oil groove (23) and the high-pressure zone oil groove (24) are arc-shaped, and the medium-pressure zone oil groove (23) and the high-pressure zone oil groove (24) are arranged along the circumference of the compression chamber (1).

5. The pump assembly according to claim 2, characterized in that: The pump body assembly also includes an oil pumping portion, which is connected to the oil channel to drive the oil to flow in the oil channel.

6. The pump assembly according to claim 5, characterized in that: The pump body assembly also includes a crankshaft (6), and the oil pump part includes an oil supply member (4). The oil supply member (4) is arranged on the crankshaft (6), and a first channel (41) and a second channel are arranged on the oil supply member (4). The first channel (41) is connected to the oil channel, and the second channel extends along the extension direction of the crankshaft (6).

7. The pump assembly according to claim 6, characterized in that: The oil channel also includes a drainage tube (5), one end of which is connected to the first channel (41), and the other end of which is connected to the connecting section (31).

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

9. The compressor according to claim 8, characterized in that The compressor comprises a shell and an oil pool. When the oil channel comprises a drainage pipe (5) and the cooling section comprises an oil storage tank (22), at least one section of the drainage pipe (5) is located outside the shell, and the oil outlet end of the drainage pipe (5) penetrates into the shell from a side of the compression part away from the oil pool and is communicated with the oil storage tank (22).

10. An air conditioner, characterized in that: Comprising a pump body assembly as described in any one of claims 1-7.

Images