Pump body assembly, air conditioner

Abstract

The present application provides a pump body assembly, an air conditioner, a compression part and a pressure relief assembly; a compression cavity is arranged in the compression part; the pressure relief assembly is arranged on the compression part, and the pressure relief assembly includes a first channel and a pressure relief channel. The first channel is selectively communicated with the compression cavity. The inlet end of the first channel is connected to the compression cavity. The first end of the pressure relief channel is communicated with the first channel, and the second end of the pressure relief channel is communicated with the external space of the compression part. When the pressure in the compression cavity is greater than the pressure relief threshold, the inlet end is opened so that the pressure relief channel is communicated with the compression cavity. When the pressure in the compression cavity is less than the pressure relief threshold, the inlet end is closed. In the embodiments of the present application, a pump body assembly and an air conditioner can reduce the clearance volume and improve the volumetric efficiency when the pressure relief valve plate is in the closed state.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioning, and particularly relates to a pump body assembly and an air conditioner. Background Art

[0002] When the actual operating conditions of a conventional scroll compressor deviate from the design conditions, in order to solve the additional energy loss caused by over-compression of the compressor, a pressure relief passage is usually opened on the stationary scroll to allow the compression chamber to exhaust in advance, reducing the impact of over-compression on the indicated efficiency. When the compressor is operating normally and does not require pressure relief, the pressure relief valve plate is in the closed state, but the pressure relief passage between the pressure relief valve plate and the pump body compression chamber constitutes a certain clearance volume, which affects the suction of the compressor and results in a decrease in volumetric efficiency. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this application is to provide a pump body assembly and an air conditioner that can reduce the clearance volume and improve the volumetric efficiency when the pressure relief valve plate is in the closed state.

[0004] To solve the above problems, this application provides a pump body assembly, including a compression part and a pressure relief assembly;

[0005] A compression chamber is provided inside the compression part;

[0006] The pressure relief assembly is provided on the compression part. The pressure relief assembly includes a first passage and a pressure relief passage. The first passage is selectively connected to the compression chamber. The inlet end of the first passage is connected to the compression chamber. The first end of the pressure relief passage is connected to the first passage, and the second end of the pressure relief passage is connected to the external space of the compression part;

[0007] When the pressure in the compression chamber is greater than the pressure relief threshold, the inlet end opens to connect the pressure relief passage to the compression chamber;

[0008] When the pressure in the compression chamber is less than the pressure relief threshold, the inlet end closes.

[0009] Preferably, a blocking member is provided in the first passage, and the blocking member is slidably provided in the first passage;

[0010] When the pressure in the compression chamber is greater than the pressure relief threshold, the blocking member slides in a direction away from the inlet end to connect the pressure relief passage to the compression chamber;

[0011] When the pressure in the compression chamber is less than the pressure relief threshold, the blocking member closes the inlet end.

[0012] Preferably, when the blocking member closes the inlet end, the blocking member closes the first end of the pressure relief passage.

[0013] Preferably, the first channel further includes a discharge port end, and the discharge port end is in communication with the external space of the compression part.

[0014] Preferably, the external space is a back pressure chamber.

[0015] Preferably, the pressure relief component further includes a pressure relief valve plate, a valve plate baffle and a connecting piece. The pressure relief valve plate and the valve plate baffle are arranged on the compression part through the connecting piece. The pressure relief valve plate can close or open the second end of the pressure relief channel, and the valve plate baffle is arranged on the side of the pressure relief valve plate away from the compression part.

[0016] Preferably, the connecting piece is arranged in the first channel, and a second channel is arranged on the connecting piece. The first channel is in communication with the external space through the second channel.

[0017] Preferably, a second channel is arranged on the valve plate baffle, and the first channel is in communication with the external space through the second channel.

[0018] Preferably, the pressure relief channel includes a first section and a second section. The first section is perpendicular to the first channel, and the second section is parallel to the first channel.

[0019] Preferably, the first channel includes a first section and a second section. The first section is perpendicular to the pressure relief channel, and the second section is parallel to the pressure relief channel.

[0020] Preferably, a limiting cavity is arranged in the first section, and the plugging piece is slidably arranged in the limiting cavity.

[0021] On the other hand, the present application provides an air conditioner, including the pump body assembly as described above.

[0022] Beneficial effects

[0023] In the embodiments of the present invention, a pump body assembly and an air conditioner can reduce the clearance volume and improve the volumetric efficiency when the pressure relief valve plate is in the closed state. Description of the drawings

[0024] Figure 1 is a schematic structural diagram of Embodiment 1 of the present application;

[0025] Figure 2 is a schematic structural diagram when the pressure in the compression cavity of Embodiment 1 of the present application is less than the pressure relief threshold;

[0026] Figure 3 is a schematic structural diagram when the pressure in the compression cavity of Embodiment 1 of the present application is greater than the pressure relief threshold;

[0027] Figure 4Schematic diagram of Embodiment 2 of the present application;

[0028] Figure 5 Schematic diagram of Embodiment 3 of the present application.

[0029] The reference signs are shown as:

[0030] 1, stationary disk; 11, compression chamber; 12, first channel; 121, inlet end; 122, installation section; 13, pressure relief channel; 14, machining process hole; 2, connecting piece; 3, valve plate baffle; 4, pressure relief valve plate; 5, plugging piece; 6, process plug. Detailed implementation manners

[0031] Referring to Figures 1 to 3 As shown, according to Embodiment 1 of the present application, a pump body assembly includes a compression part and a pressure relief assembly; a compression chamber 11 is provided in the compression part; the pressure relief assembly is arranged on the compression part, and the pressure relief assembly includes a first channel 12 and a pressure relief channel 13. The first channel 12 is selectively communicated with the compression chamber 11. The inlet end 121 of the first channel 12 is connected to the compression chamber 11. The first end of the pressure relief channel 13 is communicated with the first channel 12, and the second end of the pressure relief channel 13 is communicated with the external space of the compression part; when the pressure in the compression chamber 11 is greater than the pressure relief threshold, the inlet end 121 is opened so that the pressure relief channel 13 is communicated with the compression chamber 11; when the pressure in the compression chamber 11 is less than the pressure relief threshold, the inlet end 121 is closed. By providing the first channel 12, the pressure relief channel 13 is communicated with the first channel 12, and the first channel 12 is selectively communicated with the compression chamber 11, that is, the inlet end 121 can be opened or closed, and the clearance volume can be reduced and the volumetric efficiency can be improved when the pressure relief valve plate 4 is in the closed state.

[0032] Furthermore, in this embodiment, the pump body assembly is the pump body assembly of a scroll compressor. The compression part includes a stationary disk 1 and a moving disk, and the pressure relief assembly is arranged on the stationary disk 1, that is, the first channel 12 and the pressure relief channel 13 are opened on the stationary disk 1.

[0033] Furthermore, at least a part of the overpressure gas in the compression chamber 11 is discharged out of the compression chamber 11 through the pressure relief channel 13. The overpressure gas in the compression chamber 11 enters the pressure relief channel 13 from the first section and is discharged from the second end of the pressure relief channel 13 into the external space of the compression part.

[0034] Furthermore, the inlet end 121 of the first channel 12 is the connection part of the first channel 12 and the compression chamber 11. The inlet end 121 can be opened or closed, and the clearance volume can be reduced and the volumetric efficiency can be improved when the pressure relief valve plate 4 is in the closed state.

[0035] A blocking member 5 is arranged in the first channel 12, and the blocking member 5 is slidably arranged in the first channel 12; when the pressure in the compression chamber 11 is greater than the pressure relief threshold, the blocking member 5 slides in a direction away from the inlet end 121, so that the pressure relief channel 13 is communicated with the compression chamber 11; when the pressure in the compression chamber 11 is less than the pressure relief threshold, the blocking member 5 closes the inlet end 121. By arranging the blocking member 5 in the first channel 12, the opening or closing of the inlet end 121 is realized through the blocking member 5, and further, when the pressure relief valve plate 4 is in a closed state, the clearance volume is reduced and the volumetric efficiency is improved.

[0036] Further, in this embodiment, the first channel 12 extends linearly, and the blocking member 5 is in the shape of a cylinder and can slide along the extending direction of the first channel 12.

[0037] Further, the inlet end 121 of the first channel 12 has a necking structure to limit the blocking member 5 in the first channel 12 and prevent the blocking member 5 from disengaging from the inlet end 121. The opening diameter of the necking structure is smaller than the diameter of the first channel 12, so that the blocking member 5 can completely close the inlet end 121.

[0038] When the blocking member 5 closes the inlet end 121, the blocking member 5 closes the first end of the pressure relief channel 13, further ensuring that the pressure relief channel 13 is separated from the compression chamber 11.

[0039] Further, when the blocking member 5 closes the inlet end 121, one end face of the blocking member 5 closes the inlet end 121, and the side wall of the blocking member 5 closes the first end.

[0040] The first channel 12 further includes a discharge port end, and the discharge port end is communicated with the external space of the compression part, ensuring that the blocking member 5 can slide towards the discharge port end, and further opening the inlet end 121 and the first end, so that the inlet end 121 is communicated with the first end.

[0041] The external space is a back pressure chamber, ensuring that there is a certain pressure outside the discharge port end of the first channel 12 and the second end of the pressure relief channel 13, and ensuring that when the compression part works normally, the blocking member 5 can close the inlet end 121.

[0042] Further, the back pressure chamber is the back pressure chamber of the pump body assembly, and the back pressure chamber has a certain pressure.

[0043] The pressure relief assembly further includes a pressure relief valve plate 4, a valve plate baffle 3 and a connecting member 2. The pressure relief valve plate 4 and the valve plate baffle 3 are arranged on the compression part through the connecting member 2. The pressure relief valve plate 4 can close or open the second end of the pressure relief channel 13, and the valve plate baffle 3 is arranged on the side of the pressure relief valve plate 4 away from the compression part. By arranging the pressure relief valve plate 4, the valve plate baffle 3 and the connecting member 2, the normal pressure relief operation is ensured.

[0044] In this embodiment, the connecting member 2 is disposed within the first passage 12. The connecting member 2 is provided with a second passage, and the first passage 12 is in communication with the external space through the second passage, reducing the number of openings on the stationary disk 1 and ensuring the stability of the stationary disk 1.

[0045] Further, the first passage 12 and the second passage are coaxially arranged.

[0046] Further, the first passage 12 includes a mounting section 122, and the inner wall of the mounting section 122 is provided with threads. The connecting member 2 is disposed within the mounting section 122 by means of the threads.

[0047] The pressure relief passage 13 includes a first section and a second section. The first section is perpendicular to the first passage 12, and the second section is parallel to the first passage 12.

[0048] Further, the first passage 12 and the second section are perpendicular to the compression chamber 11.

[0049] Further, a processing technology hole 14 is also formed on the stationary disk 1. The processing technology hole 14 is coaxially arranged with the first section and is used for forming the first section. After the first section is formed, the processing technology hole 14 is closed by inserting a process plug 6 to prevent gas from discharging through the processing technology hole 14.

[0050] Embodiment 2

[0051] As Figure 4 shown, the difference between this embodiment and Embodiment 1 is that the valve plate baffle 3 is provided with a second passage, and the first passage 12 is in communication with the external space through the second passage.

[0052] Further, the first passage 12 and the second passage are coaxially arranged.

[0053] Embodiment 3

[0054] As Figure 5 shown, the difference between this embodiment and Embodiments 1 and 2 is that the first passage 12 includes a first section and a second section. The first section is perpendicular to the pressure relief passage 13, and the second section is parallel to the pressure relief passage 13.

[0055] In this embodiment, the pressure relief passage 13 and the second section are perpendicular to the compression chamber 11.

[0056] A limiting cavity is provided within the first section, and the blocking member 5 is slidably disposed within the limiting cavity to ensure the blocking effect of the blocking member 5.

[0057] On the other hand, this embodiment provides an air conditioner including the pump body assembly as described above.

[0058] In the embodiments of the present application, a pump body assembly and an air conditioner are provided, which can reduce the clearance volume and improve the volumetric efficiency when the pressure relief valve disc 4 is in the closed state.

[0059] Those skilled in the art can easily understand that, on the premise of no conflict, the above advantageous ways can be freely combined and superimposed.

[0060] The above are only the 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 is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art in the technical field of the present application, several improvements and variations can be made without departing from the technical principle 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 body assembly, characterized in that, Compression part and pressure relief component; A compression chamber (11) is provided inside the compression part; The pressure relief component is arranged on the compression part. The pressure relief component includes a first channel (12) and a pressure relief channel (13). The first channel (12) is selectively connected to the compression chamber (11). The inlet end (121) of the first channel (12) is connected to the compression chamber (11). The first end of the pressure relief channel (13) is connected to the first channel (12), and the second end of the pressure relief channel (13) is connected to the external space of the compression part; When the pressure in the compression chamber (11) is greater than the pressure relief threshold, the inlet end (121) opens to connect the pressure relief channel (13) to the compression chamber (11); When the pressure in the compression chamber (11) is less than the pressure relief threshold, the inlet end (121) closes. The pressure relief component further includes a pressure relief valve plate (4), a valve plate baffle (3), and a connecting piece (2). The pressure relief valve plate (4) and the valve plate baffle (3) are arranged on the compression part through the connecting piece (2). The pressure relief valve plate (4) can close or open the second end of the pressure relief channel (13). The valve plate baffle (3) is arranged on the side of the pressure relief valve plate (4) away from the compression part. The connecting piece (2) is arranged in the first channel (12), and a second channel is arranged on the connecting piece (2). The first channel (12) is connected to the external space through the second channel. A second channel is arranged on the valve plate baffle (3), and the first channel (12) is connected to the external space through the second channel.

2. The pump body assembly according to claim 1, wherein A blocking piece (5) is arranged in the first channel (12), and the blocking piece (5) is slidably arranged in the first channel (12); When the pressure in the compression chamber (11) is greater than the pressure relief threshold, the blocking piece (5) slides in a direction away from the inlet end (121) to connect the pressure relief channel (13) to the compression chamber (11); When the pressure in the compression chamber (11) is less than the pressure relief threshold, the blocking piece (5) closes the inlet end (121).

3. The pump body assembly according to claim 2, characterized in that, When the blocking piece (5) closes the inlet end (121), the blocking piece (5) closes the first end of the pressure relief channel (13).

4. The pump body assembly according to claim 1, characterized in that, The first channel (12) further includes a discharge port end, and the discharge port end is connected to the external space of the compression part.

5. The pump body assembly according to claim 4, wherein, The external space is a back pressure chamber.

6. The pump body assembly according to claim 1, characterized in that, The pressure relief channel (13) includes a first section and a second section. The first section is perpendicular to the first channel (12), and the second section is parallel to the first channel (12).

7. The pump body assembly according to claim 2, characterized in that, The first channel (12) includes a first section and a second section. The first section is perpendicular to the pressure relief channel (13), and the second section is parallel to the pressure relief channel (13).

8. The pump body assembly according to claim 7, characterized in that, A limiting chamber is arranged in the first section, and the blocking piece (5) is slidably arranged in the limiting chamber.

9. An air conditioner, characterized in that, Including the pump body assembly according to any one of claims 1-8.

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