Compression assembly, compressor and refrigeration equipment

Abstract

The utility model provides a compression assembly, a compressor and refrigeration equipment. The compression assembly comprises a crankshaft, a pump assembly, a first silencer and a second silencer; the pump assembly is arranged on the crankshaft in a sleeving mode and provided with a first exhaust port, a second exhaust port and a communicating channel. The first silencer is arranged on the first side, in the axial direction, of the pump assembly and covers the first exhaust port, and a first silencing cavity is defined by the first silencer and the pump assembly; the second silencer is arranged on the second side, in the axial direction, of the pump assembly and covers the second exhaust port, a second silencing cavity is defined by the second silencer and the pump assembly, and the second silencing cavity communicates with the first silencing cavity through a communicating channel; the pump assembly is provided with a pressure relief channel, one end of the pressure relief channel communicates with the communicating channel, and the other end of the pressure relief channel communicates with the outer space of the pump assembly. Part of the refrigerant flowing through the communicating channel can be discharged out of the pump assembly through the pressure relief channel, axial impact caused by flowing of the refrigerant is reduced, and axial vibration of the compressor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and in particular to a compression component, a compressor and a refrigeration device. Background Art

[0002] At present, in the relevant technology, the compressor includes a pump body, and a first exhaust port and a second exhaust port are respectively provided on both sides of the axial direction of the pump body. The refrigerant discharged from the first exhaust port will enter the first silencer chamber, and the refrigerant discharged from the second exhaust port will enter the second silencer chamber. The refrigerant in the second silencer chamber will then flow to the first silencer chamber through a connecting channel provided in the pump body. The refrigerant flowing into the first silencer chamber through the connecting channel will mix with the refrigerant entering the first silencer chamber through the first exhaust port, and the mixed gas will be discharged from the exhaust port of the first silencer. However, the axial impact of the refrigerant flowing into the first silencer chamber through the connecting channel and the refrigerant entering the first silencer chamber through the first exhaust port will also be superimposed in the first silencer chamber, thereby increasing the axial vibration of the compressor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To this end, a first aspect of the present invention provides a compression assembly.

[0005] A second aspect of the present invention provides a compressor.

[0006] A third aspect of the present invention provides a refrigeration device.

[0007] In view of this, the first aspect of the present invention provides a compression assembly, including a crankshaft, a pump assembly, a first muffler and a second muffler; the pump assembly is sleeved on the crankshaft, and the pump assembly is provided with a first exhaust port, a second exhaust port and a connecting channel; the first muffler is arranged on the first side of the pump assembly in the axial direction, and the cover is arranged on the first exhaust port, and the first muffler and the pump assembly enclose a first muffler chamber; the second muffler is arranged on the second side of the pump assembly in the axial direction, and the cover is arranged on the second exhaust port, and the second muffler and the pump assembly enclose a second muffler chamber, and the second muffler chamber is connected to the first muffler chamber through the connecting channel; wherein, the pump assembly is provided with a pressure relief channel, one end of the pressure relief channel is connected to the connecting channel, and the other end is connected to the external space of the pump assembly.

[0008] The compression assembly provided in the present application includes a crankshaft and a pump assembly. The pump assembly is sleeved on the crankshaft. A compression chamber is provided in the pump assembly. The crankshaft drives the cam to move in the compression chamber, thereby achieving compression of the refrigerant.

[0009] The compression assembly also includes a first silencer and a second silencer, and the first silencer and the pump assembly are arranged on the end face of the first side in the axial direction to form a first silencer chamber, and the second silencer and the pump assembly are arranged on the end face of the second side in the axial direction to form a second silencer chamber; the pump assembly is provided with a first exhaust port and a second exhaust port, and the first exhaust port and the second exhaust port are both connected to the compression chamber, and there can be two compression chambers. The refrigerant compressed in one of the two compression chambers can be discharged into the first silencer chamber through the first exhaust port, and the refrigerant compressed in the other of the two compression chambers can be discharged into the second silencer chamber through the second exhaust port; the second silencer chamber is connected to the first silencer chamber through a connecting channel, and the refrigerant in the second silencer chamber can enter the first silencer chamber through the connecting channel and mix with the refrigerant entering the first silencer chamber from the first exhaust port.

[0010] Since the pump assembly is provided with a pressure relief channel, one end of the pressure relief channel is connected to the connecting channel, and the other end is connected to the external space of the pump assembly. Part of the refrigerant flowing through the connecting channel will be discharged from the pump assembly through the pressure relief channel, thereby changing the axial vibration frequency of the refrigerant flowing through the connecting channel. The axial impact of the refrigerant flowing into the first silencer chamber through the connecting channel and the refrigerant entering the first silencer chamber through the first exhaust port will not be completely superimposed, thereby reducing the axial impact caused by the refrigerant flow and the axial vibration of the compressor. This can effectively reduce the gas pulsation phenomenon inside the pump assembly and reduce the noise of the compressor caused by the axial impact of the refrigerant.

[0011] By setting up a pressure relief channel, the cavity mode of the refrigerant flow path can also be changed, which can effectively reduce the gas pulsation phenomenon inside the compression component, thereby reducing the vibration and noise generated by the compression component.

[0012] In addition, the compression assembly in the above technical solution provided by the present invention may also have the following additional technical features:

[0013] In some technical solutions of the present invention, optionally, the pump assembly includes a first bearing, a first pump body, a partition, a second pump body and a second bearing; the first bearing is sleeved on the crankshaft, and the first muffler is connected to the first bearing; the first pump body is arranged on the side of the first bearing away from the first muffler; the partition is arranged on the side of the first pump body away from the first bearing; the second pump body is arranged on the side of the partition away from the first pump body; the second bearing is arranged on the side of the second pump body away from the partition, and the second muffler is connected to the second bearing; the connecting channel axially passes through the first bearing, the first pump body, the partition, the second pump body and the second bearing.

[0014] In this technical solution, the pump assembly includes a first bearing and a second bearing. The first bearing is sleeved on the crankshaft, the first muffler is connected to the first bearing, the second bearing is arranged on the side of the second pump body away from the partition, and the second muffler is connected to the second bearing. Then, the first bearing, the second bearing and the crankshaft cooperate to support the pump assembly and improve the stability of the pump assembly during the operation of the compressor.

[0015] The pump assembly also includes a first pump body, a partition and a second pump body. The first pump body is arranged on the side of the first bearing away from the first muffler, the partition is arranged on the side of the first pump body away from the first bearing, and the second pump body is arranged on the side of the partition away from the first pump body, that is, the partition is arranged between the first pump body and the second pump body, thereby separating the first compression chamber arranged in the first pump body and the second compression chamber arranged in the second pump body, so that the first compression chamber and the second compression chamber alternately compress the refrigerant, and the refrigerant in the first compression chamber is discharged from the first exhaust port to the first muffler chamber after compression, and the refrigerant in the second compression chamber is discharged from the second exhaust port to the second compression chamber after compression. The connecting channel axially penetrates the first bearing, the first pump body, the partition, the second pump body and the second bearing, thereby enabling the first muffler chamber and the second muffler chamber to be connected through the connecting channel, thereby improving the smoothness of the exhaust of the pump assembly.

[0016] Furthermore, the first exhaust port is provided on the first bearing, and the first exhaust port is communicated with the first compression chamber.

[0017] The second exhaust port is arranged on the second bearing, and the second exhaust port is communicated with the second compression chamber.

[0018] In some technical solutions of the present invention, optionally, the pressure relief channel is provided on the partition.

[0019] In this technical solution, a pressure relief channel is provided on the partition. The refrigerant in the second silencer chamber passes through the connecting channel. When the refrigerant flows through the pressure relief channel, the pressure can be relieved by the pressure relief channel, thereby changing the pulsation of the refrigerant in the connecting channel, so that the pulsation frequency of the refrigerant flowing into the first silencer chamber through the connecting channel is different from the pulsation frequency of the refrigerant entering the first silencer chamber through the first exhaust port. As a result, the pulsation frequency of the refrigerant flowing into the first silencer chamber through the connecting channel and the pulsation frequency of the refrigerant entering the first silencer chamber through the first exhaust port will not completely overlap in the first silencer chamber, thereby reducing the vibration and impact of the refrigerant in the first silencer chamber and improving the stability and quietness of the compressor during operation.

[0020] The pressure relief channel is located on the bulkhead. The bulkhead's structure is relatively simple among the various components of the pump assembly, allowing for flexible placement of the pressure relief channel. The probability of interference with other structures on the bulkhead is also reduced, minimizing the pressure relief channel's impact on the overall structure of the pump assembly. The bulkhead also withstands less pressure and requires less structural strength than other components of the pump assembly. Therefore, the impact of the pressure relief channel on the bulkhead on the overall structural strength of the pump assembly is minimal, improving the pump assembly's stability during the refrigerant compression process.

[0021] In some technical solutions of the present invention, optionally, the pressure relief channel is a through hole that passes through the connecting channel and the external space of the pump assembly; or the pressure relief channel is a groove on the axial end face of the partition, one end of the groove is connected to the connecting channel, and the other end is connected to the external space of the pump assembly.

[0022] In this technical solution, the pressure relief channel can be configured as a through hole with a smoother inner wall, allowing for smoother exhaust. The pressure relief channel can also be configured as a groove provided on the axial end surface of the partition. The groove on the axial end surface can be integrally die-cast with the partition or machined on processing equipment, making the processing of the pressure relief channel more convenient, thereby simplifying the processing process and improving the processing efficiency of the pressure relief channel.

[0023] In some technical solutions of the present invention, optionally, the pressure relief channel extends radially of the partition.

[0024] In this technical solution, the pressure relief channel extends radially along the partition, so that the pressure relief channel can be arranged linearly, thereby making the exhaust of the pressure relief channel smoother.

[0025] In some technical solutions of the present invention, optionally, the pressure relief channel includes a first channel and a second channel; the first channel extends radially along the pump assembly, and the first end of the first channel is connected to the connecting channel; the second channel extends axially along the pump assembly, the first end of the second channel is connected to the second end of the first channel, and the second end of the second channel extends to the axial end face of the partition.

[0026] In this technical solution, the pressure relief channel includes a first channel and a second channel; the first channel extends radially along the pump assembly, and the second channel extends axially along the pump assembly. The connecting channel communicates with the external space of the pump assembly through the first and second channels. The refrigerant in the connecting channel passes through the first and second channels in sequence and then enters the external space of the pump assembly, thereby achieving pressure relief. Because the first channel extends radially along the pump assembly and the second channel extends axially along the pump assembly, the refrigerant in the connecting channel changes flow direction in the second channel after passing through the first channel, and is then buffered by the second channel, further reducing the impact and vibration of the refrigerant passing through the pressure relief channel, and reducing the noise generated by the pressure relief channel.

[0027] In some technical solutions of the present invention, optionally, the pressure relief channel is provided on the first bearing, the first pump body, the second pump body and / or the second bearing.

[0028] In this technical solution, the pressure relief channel is arranged on the first bearing, the first pump body, the second pump body and / or the second bearing, so that the arrangement of the pressure relief channel is more flexible, and the pressure relief channel can also be adapted to more types of pump components, thereby improving the applicability of the pressure relief channel.

[0029] Furthermore, the pressure relief channel is provided in the first pump body, and the pressure relief channel can be a through hole provided on the first pump body, which passes through the communicating channel and the circumferential wall of the first pump body, thereby allowing the pressure in the communicating channel to be released.

[0030] The pressure relief channel is arranged in the first pump body. The pressure relief channel can be a groove arranged on the end surface of the first pump body, for example, a groove arranged on the end surface of the first pump body close to the first bearing, or a groove arranged on the end surface of the first pump body close to the partition.

[0031] Furthermore, the pressure relief channel is provided in the second pump body, and the pressure relief channel can be a through hole provided on the second pump body, which passes through the communicating channel and the circumferential wall of the second pump body, thereby allowing the pressure in the communicating channel to be released.

[0032] The pressure relief channel is arranged in the second pump body. The pressure relief channel can be a groove arranged on the end surface of the second pump body, for example, a groove arranged on the end surface of the second pump body close to the second bearing, or a groove arranged on the end surface of the second pump body close to the partition.

[0033] Furthermore, the pressure relief channel is provided with the first pump body and the partition at the same time, a groove is provided on the end face of the first pump body on the side close to the partition, and a groove is also provided on the end face of the partition on the side close to the first pump body. The groove provided on the first pump body is opposite to the groove provided on the partition, and together they enclose a pressure relief channel.

[0034] Furthermore, the pressure relief channel is provided with a second pump body and a partition at the same time, a groove is provided on the end face of the second pump body close to the partition, and a groove is also provided on the end face of the partition close to the second pump body. The groove provided on the second pump body is opposite to the groove provided on the partition, and together they enclose a pressure relief channel.

[0035] In some technical solutions of the present invention, optionally, the cross-section of the pressure relief channel is circular, semicircular, elliptical, triangular, rectangular or square.

[0036] In this technical solution, the cross-section of the pressure relief channel is circular, semicircular, elliptical, triangular, rectangular or square, so that the cross-section of the pressure relief channel can be set according to processing needs, thereby improving the convenience of processing the pressure relief channel.

[0037] Furthermore, when the pressure relief channel is a through hole, the cross section of the pressure relief channel is circular, and the pressure relief channel can be processed by a drilling process.

[0038] When the pressure relief channel is a groove, the cross-section of the pressure relief channel is semicircular, rectangular or square, and the groove can be processed by the channel milling process. In addition, when milling the groove, the axial end faces of each component of the pump assembly can be used as processing planes, and there is no need to additionally process the process planes required for processing, making the processing of the pressure relief channel more convenient.

[0039] Furthermore, the cross section of the pressure relief channel may also be an irregular shape.

[0040] In some technical solutions of the present invention, optionally, the ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the first exhaust port is less than or equal to 0.1; or the ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the second exhaust port is less than or equal to 0.1; or the sum of the flow area of ​​the first exhaust port and the flow area of ​​the second exhaust port is the first area, and the ratio of the flow area of ​​the pressure relief channel to the first area is less than or equal to 0.1.

[0041] In this technical solution, the ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the first exhaust port is less than or equal to 0.1, thereby preventing the area of ​​the pressure relief channel from being too large and affecting the exhaust volume of the pump assembly, thereby ensuring the pump assembly's compression efficiency of the refrigerant. The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the second exhaust port is less than or equal to 0.1, or the sum of the flow areas of the first exhaust port and the second exhaust port is the first area, and the ratio of the flow area of ​​the pressure relief channel to the first area is less than or equal to 0.1. This can also prevent the area of ​​the pressure relief channel from being too large and affecting the exhaust volume of the pump assembly, thereby ensuring the pump assembly's compression efficiency of the refrigerant.

[0042] Specifically, the flow area of ​​the pressure relief channel is the area of ​​the cross section of the pressure relief channel, the flow area of ​​the first exhaust port is the area of ​​the cross section of the first exhaust port, and the flow area of ​​the second exhaust port is the area of ​​the cross section of the second exhaust port.

[0043] When there are multiple pressure relief channels, the flow area of ​​the pressure relief channels is the sum of the cross-sectional areas of the multiple pressure relief channels.

[0044] Furthermore, a ratio of a flow area of ​​the pressure relief channel to a flow area of ​​the first exhaust port is greater than or equal to 0.01.

[0045] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the first exhaust port is 0.01.

[0046] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the first exhaust port is 0.03.

[0047] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the first exhaust port is 0.07.

[0048] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the first exhaust port is 0.1.

[0049] Furthermore, a ratio of a flow area of ​​the pressure relief channel to a flow area of ​​the second exhaust port is greater than or equal to 0.01.

[0050] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the second exhaust port is 0.01.

[0051] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the second exhaust port is 0.03.

[0052] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the second exhaust port is 0.07.

[0053] The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the second exhaust port is 0.1.

[0054] Furthermore, the sum of the flow area of ​​the first exhaust port and the flow area of ​​the second exhaust port is a first area, and the ratio of the flow area of ​​the pressure relief channel to the first area is greater than or equal to 0.01.

[0055] The ratio of the flow area of ​​the pressure relief channel to the first area is 0.01.

[0056] The ratio of the flow area of ​​the pressure relief channel to the first area is 0.03.

[0057] The ratio of the flow area of ​​the pressure relief channel to the first area is 0.07.

[0058] The ratio of the flow area of ​​the pressure relief channel to the first area is 0.1.

[0059] In some technical solutions of the present invention, optionally, the number of pressure relief channels is greater than or equal to 1 and less than or equal to 6.

[0060] In this technical solution, the number of pressure relief channels is greater than or equal to 1 and less than or equal to 6, so that the pressure relief channels can be arranged according to the needs of the pressure relief flow, and can also be arranged according to the structure of each component of the pump assembly itself, further improving the flexibility of the pressure relief channel arrangement.

[0061] Furthermore, there are multiple communicating channels, which are arranged along the circumference of the pump assembly, and each communicating channel is provided with a pressure relief channel or multiple pressure relief channels; or at least one communicating channel among the multiple communicating channels may be provided with at least one pressure relief channel.

[0062] The number of the communication channel is one. Along the axial direction of the pump assembly, one communication channel can be provided with one pressure relief channel, or multiple pressure relief channels can be provided.

[0063] The second aspect of the present invention provides a compressor comprising a compression assembly according to any of the above technical solutions. Therefore, the compressor has all the beneficial effects of the compression assembly according to any of the above technical solutions.

[0064] Furthermore, the compressor includes a housing and a motor. The compression assembly is arranged in the housing. The motor is connected to the crankshaft, thereby driving the pump assembly to compress the refrigerant.

[0065] The external space of the pump assembly is the suction chamber of the compressor.

[0066] A third aspect of the present invention provides a refrigeration device, comprising a compression assembly according to any of the above technical solutions, or a compressor according to any of the above technical solutions.

[0067] Refrigeration equipment includes air conditioners, refrigerators, wine cabinets, display cabinets or freezers.

[0068] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0070] Figure 1 shows a cross-sectional view of a compression assembly according to one embodiment of the present invention;

[0071] Figure 2 A bar graph showing the noise percentage of a compression component in various frequency bands according to an embodiment of the present invention;

[0072] Figure 3 One of the cross-sectional views of a partition according to one embodiment of the present invention is shown;

[0073] Figure 4 A schematic structural diagram of a partition according to an embodiment of the present utility model is shown;

[0074] Figure 5 Shows a structural schematic diagram of a first pump body according to an embodiment of the present utility model;

[0075] Figure 6 FIG2 shows a second cross-sectional view of a partition according to an embodiment of the present invention;

[0076] Figure 7 A structural schematic diagram of a first bearing according to an embodiment of the present utility model is shown.

[0077] in, Figures 1 to 7 The corresponding relationship between the reference numerals and component names is as follows:

[0078] 100 compression assembly, 110 crankshaft, 130 first muffler, 132 first muffler chamber, 140 second muffler, 142 second muffler chamber, 200 pump assembly, 210 communicating channel, 220 pressure relief channel, 222 first channel, 224 second channel, 226 through hole, 228 groove, 230 first bearing, 232 first exhaust port, 240 first pump body, 250 partition, 260 second pump body, 270 second bearing, 234 second exhaust port. DETAILED DESCRIPTION

[0079] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0080] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0081] Refer to the following Figures 1 to 7 The following describes a compression assembly 100 , a compressor, and a refrigeration device according to some embodiments of the present invention.

[0082] In one embodiment of the present invention, Figure 1 As shown, a compression assembly 100 is provided, including a crankshaft 110, a pump assembly 200, a first muffler 130 and a second muffler 140; the pump assembly 200 is sleeved on the crankshaft 110, and the pump assembly 200 is provided with a first exhaust port 232, a second exhaust port 234 and a communication channel 210; the first muffler 130 is provided on the pump assembly 200 in the axial direction ( Figure 1The first side of the pump assembly 200 in the axial direction is covered with a cover on the first exhaust port 232, and the first muffler 130 and the pump assembly 200 enclose a first muffler chamber 132; the second muffler 140 is provided on the second side of the pump assembly 200 in the axial direction, and the cover is provided on the second exhaust port 234, and the second muffler 140 and the pump assembly 200 enclose a second muffler chamber 142, and the second muffler chamber 142 is connected with the first muffler chamber 132 through the connecting channel 210; wherein, the pump assembly 200 is provided with a pressure relief channel 220, one end of the pressure relief channel 220 is connected with the connecting channel 210, and the other end is connected with the external space of the pump assembly 200.

[0083] In this embodiment, the compression assembly 100 includes a crankshaft 110 and a pump assembly 200. The pump assembly 200 is sleeved on the crankshaft 110. A compression chamber is provided in the pump assembly 200. The crankshaft 110 drives the cam to move in the compression chamber, thereby achieving compression of the refrigerant.

[0084] The compression assembly 100 further includes a first muffler 130 and a second muffler 140. The first muffler 130 and the pump assembly 200 are arranged on the end surface of the first side in the axial direction to form a first muffler cavity 132. The second muffler 140 and the pump assembly 200 are arranged on the end surface of the second side in the axial direction to form a second muffler cavity 142. The pump assembly 200 is provided with a first exhaust port 232 and a second exhaust port 234. Both the first exhaust port 232 and the second exhaust port 234 are connected to the compression cavity. There may be two compression cavities, one of which is connected to the other. The refrigerant compressed in each compression chamber can be discharged into the first silencer chamber 132 through the first exhaust port 232, and the refrigerant compressed in the other compression chamber of the two compression chambers can be discharged into the second silencer chamber 142 through the second exhaust port 234; the second silencer chamber 142 is connected to the first silencer chamber 132 through the connecting channel 210, and the refrigerant in the second silencer chamber 142 can enter the first silencer chamber 132 through the connecting channel 210 and mix with the refrigerant entering the first silencer chamber 132 through the first exhaust port 232.

[0085] Since the pump assembly 200 is provided with a pressure relief channel 220, one end of the pressure relief channel 220 is connected to the connecting channel 210, and the other end is connected to the external space of the pump assembly 200. Part of the refrigerant flowing through the connecting channel 210 will be discharged from the pump assembly 200 through the pressure relief channel 220, thereby changing the axial vibration frequency of the refrigerant flowing through the connecting channel 210. The axial impact of the refrigerant flowing into the first silencer chamber 132 through the connecting channel 210 and the refrigerant entering the first silencer chamber 132 through the first exhaust port 232 will not be completely superimposed, thereby reducing the axial impact caused by the refrigerant flow, reducing the axial vibration of the compressor, and being able to effectively reduce the gas pulsation phenomenon inside the pump assembly and reduce the noise of the compressor caused by the axial impact of the refrigerant.

[0086] By providing the pressure relief channel 220 , the cavity mode of the refrigerant flow path can be changed, which can effectively reduce the gas pulsation phenomenon inside the compression component 100 , thereby reducing the vibration and noise generated by the compression component 100 .

[0087] As shown in Table 1 and Figure 2 As shown, the average value (RMS) of the axial vibration of the shell of the compressor with the pressure relief channel 220 (pump pressure relief exhaust) is 1.5m / s compared with the compressor without the pressure relief channel 220 (base). 2 The average axial vibration of the compressor shell without the pressure relief channel 220 is 5.1 m / s 2 The axial vibration of the compressor shell is significantly improved. Especially when the compressor is at the third-order frequency (3f, 270Hz), the improvement of the axial vibration of the compressor shell is most obvious, effectively reducing the vibration and noise of the compressor during operation, especially the improvement of the low-frequency noise of the compressor. Figure 2 The horizontal axis is the frequency band and the vertical axis is the noise percentage.

[0088] Table 1

[0089]

[0090] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0091] like Figure 1 As shown, the pump assembly 200 includes a first bearing 230, a first pump body 240, a partition 250, a second pump body 260 and a second bearing 270; the first bearing 230 is sleeved on the crankshaft 110, and the first muffler 130 is connected to the first bearing 230; the first pump body 240 is arranged on the side of the first bearing 230 away from the first muffler 130; the partition 250 is arranged on the side of the first pump body 240 away from the first bearing 230; the second pump body 260 is arranged on the side of the partition 250 away from the first pump body 240; the second bearing 270 is arranged on the side of the second pump body 260 away from the partition 250, and the second muffler 140 is connected to the second bearing 270; the connecting channel 210 axially penetrates the first bearing 230, the first pump body 240, the partition 250, the second pump body 260 and the second bearing 270.

[0092] In this embodiment, the pump assembly 200 includes a first bearing 230 and a second bearing 270. The first bearing 230 is sleeved on the crankshaft 110. The first muffler 130 is connected to the first bearing 230. The second bearing 270 is arranged on the side of the second pump body 260 away from the partition 250. The second muffler 140 is connected to the second bearing 270. Then, the first bearing 230, the second bearing 270 cooperate with the crankshaft 110 to support the pump assembly 200 and improve the stability of the pump assembly 200 during the operation of the compressor.

[0093] The pump assembly 200 also includes a first pump body 240, a partition 250 and a second pump body 260. The first pump body 240 is arranged on the side of the first bearing 230 away from the first muffler 130, the partition 250 is arranged on the side of the first pump body 240 away from the first bearing 230, and the second pump body 260 is arranged on the side of the partition 250 away from the first pump body 240, that is, the partition 250 is arranged between the first pump body 240 and the second pump body 260, thereby separating the first compression chamber arranged in the first pump body 240 and the second compression chamber arranged in the second pump body 260, so that the first compression chamber and the second compression chamber alternately compress the refrigerant, and the refrigerant in the first compression chamber is discharged from the first exhaust port 232 to the first muffler chamber 132 after compression, and the refrigerant in the second compression chamber is discharged from the second exhaust port 234 to the second compression chamber after compression. The connecting channel 210 axially passes through the first bearing 230 , the first pump body 240 , the partition 250 , the second pump body 260 and the second bearing 270 , thereby enabling the first silencer chamber 132 and the second silencer chamber 142 to be connected through the connecting channel 210 , thereby improving the smoothness of the exhaust of the pump assembly 200 .

[0094] Furthermore, the first exhaust port 232 is provided on the first bearing 230 , and the first exhaust port 232 is communicated with the first compression chamber.

[0095] The second exhaust port 234 is disposed on the second bearing 270 , and the second exhaust port 234 is communicated with the second compression chamber.

[0096] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0097] like Figure 3 As shown, the pressure relief channel 220 is provided on the partition plate 250 .

[0098] In this embodiment, the pressure relief channel 220 is arranged on the partition 250. When the refrigerant in the second silencer chamber 142 passes through the connecting channel 210 and flows through the pressure relief channel 220, the pressure can be relieved by the pressure relief channel 220, thereby changing the pulsation of the refrigerant in the connecting channel 210, so that the pulsation frequency of the refrigerant flowing into the first silencer chamber 132 through the connecting channel 210 is different from the pulsation frequency of the refrigerant entering the first silencer chamber 132 through the first exhaust port 232, thereby making the pulsation frequency of the refrigerant flowing into the first silencer chamber 132 through the connecting channel 210 and the pulsation frequency of the refrigerant entering the first silencer chamber 132 through the first exhaust port 232 not completely overlap in the first silencer chamber 132, thereby reducing the vibration and impact of the refrigerant in the first silencer chamber 132 and improving the stability and quietness of the compressor during operation.

[0099] The pressure relief channel 220 is provided on the partition 250. The structure of the partition 250 is relatively simple among the various components of the pump assembly 200. This allows for more flexible arrangement of the pressure relief channel 220 on the partition 250 and reduces the probability of interference with other structures on the partition 250, thereby reducing the impact of the pressure relief channel 220 on the overall structure of the pump assembly 200. Among the various components of the pump assembly 200, the partition 250 is required to withstand less pressure and requires less structural strength. Therefore, the provision of the pressure relief channel 220 on the partition 250 has a minimal impact on the overall structural strength of the pump assembly 200, thereby improving the stability of the pump assembly 200 during the refrigerant compression process.

[0100] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0101] like Figure 3 As shown, the pressure relief passage 220 is a through hole 226 that passes through the communication passage 210 and the external space of the pump assembly 200 .

[0102] like Figure 4 and Figure 5 As shown, the pressure relief channel 220 is a groove 228 on the axial end surface of the partition 250 , one end of the groove 228 is communicated with the communication channel 210 , and the other end is communicated with the external space of the pump assembly 200 .

[0103] In this embodiment, the pressure relief channel 220 can be configured as a through hole 226. The inner wall of the through hole 226 is smoother, allowing for smoother exhaust from the pressure relief channel 220. The pressure relief channel 220 can also be configured as a groove 228 provided on the axial end surface of the partition 250. The groove 228 on the axial end surface can be integrally die-cast with the partition 250 or can be machined on processing equipment, making the processing of the pressure relief channel 220 more convenient, thereby simplifying the processing technology of the pressure relief channel 220 and improving the processing efficiency of the pressure relief channel 220.

[0104] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0105] like Figure 1 and Figure 3 As shown, the pressure relief passage 220 extends in the radial direction of the partition plate 250 .

[0106] In this embodiment, the pressure relief channel 220 extends along the radial direction of the partition plate 250 , so that the pressure relief channel 220 can be arranged linearly, thereby making the exhaust of the pressure relief channel 220 smoother.

[0107] Specifically, the radial direction of the partition plate 250 is the same as the radial direction of the pump assembly 200 ( Figure 1 The direction indicated by the arrow B in the figure is the same direction.

[0108] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0109] like Figure 6 As shown, the pressure relief channel 220 includes a first channel 222 and a second channel 224; the first channel 222 extends radially along the pump assembly 200, and the first end of the first channel 222 is connected to the connecting channel 210; the second channel 224 extends axially along the pump assembly 200, and the first end of the second channel 224 is connected to the second end of the first channel 222, and the second end of the second channel 224 extends to the axial end face of the partition 250.

[0110] In this embodiment, the pressure relief passage 220 includes a first passage 222 and a second passage 224; the first passage 222 extends radially along the pump assembly 200, and the second passage 224 extends axially along the pump assembly 200. The connecting passage 210 communicates with the external space of the pump assembly 200 through the first and second passages 222, 224. The refrigerant within the connecting passage 210 passes through the first and second passages 222, 224, and then enters the external space of the pump assembly 200, thereby achieving pressure relief. Because the first passage 222 extends radially along the pump assembly 200 and the second passage 224 extends axially along the pump assembly 200, the refrigerant within the connecting passage 210 changes its flow direction in the second passage 224 after passing through the first passage 222. This, in turn, is buffered by the second passage 224, further reducing the impact and vibration of the refrigerant passing through the pressure relief passage 220 and reducing the noise generated by the pressure relief passage 220.

[0111] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0112] The pressure relief passage 220 is provided at the first bearing 230 , the first pump body 240 , the second pump body 260 and / or the second bearing 270 .

[0113] In this embodiment, the pressure relief channel 220 is arranged on the first bearing 230, the first pump body 240, the second pump body 260 and / or the second bearing 270, so that the arrangement of the pressure relief channel 220 is more flexible, and the pressure relief channel 220 can also be adapted to more models of pump assemblies 200, thereby improving the applicability of the pressure relief channel 220.

[0114] Furthermore, the pressure relief channel 220 is provided in the first pump body 240. The pressure relief channel 220 can be a through hole 226 provided on the first pump body 240. The through hole 226 passes through the connecting channel 210 and the circumferential wall of the first pump body 240, thereby allowing the pressure in the connecting channel 210 to be released.

[0115] like Figure 5 As shown, the pressure relief channel 220 is arranged in the first pump body 240. The pressure relief channel 220 can be a groove 228 arranged on the end surface of the first pump body 240, for example, a groove 228 arranged on the end surface of the first pump body 240 close to the first bearing 230, or a groove 228 arranged on the end surface of the first pump body 240 close to the partition 250.

[0116] Furthermore, the pressure relief channel 220 is provided in the second pump body 260. The pressure relief channel 220 can be a through hole 226 provided on the second pump body 260. The through hole 226 passes through the connecting channel 210 and the circumferential wall of the second pump body 260, thereby allowing the pressure in the connecting channel 210 to be released.

[0117] The pressure relief channel 220 is arranged in the second pump body 260. The pressure relief channel 220 can be a groove 228 arranged on the end surface of the second pump body 260, for example, a groove 228 arranged on the end surface of the second pump body 260 close to the second bearing 270, or a groove 228 arranged on the end surface of the second pump body 260 close to the partition 250.

[0118] Furthermore, the pressure relief channel 220 is provided with a first pump body 240 and a partition 250 at the same time, a groove 228 is provided on the end face of the first pump body 240 close to the partition 250, and a groove 228 is also provided on the end face of the partition 250 close to the first pump body 240. The groove 228 provided on the first pump body 240 is opposite to the groove 228 provided on the partition 250, and together encloses the pressure relief channel 220.

[0119] Furthermore, the pressure relief channel 220 is provided with a second pump body 260 and a partition 250 at the same time, and a groove 228 is provided on the end face of the second pump body 260 on the side close to the partition 250, and a groove 228 is also provided on the end face of the partition 250 on the side close to the second pump body 260. The groove 228 provided on the second pump body 260 is opposite to the groove 228 provided on the partition 250, and together encloses the pressure relief channel 220.

[0120] Furthermore, if Figure 7 As shown, the pressure relief channel 220 is provided at the first bearing 230 .

[0121] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0122] The cross section of the pressure relief channel 220 is circular, semicircular, elliptical, triangular, rectangular or square.

[0123] In this embodiment, the cross-section of the pressure relief channel 220 is circular, semicircular, elliptical, triangular, rectangular or square, so that the cross-section of the pressure relief channel 220 can be set according to processing requirements, thereby improving the convenience of processing the pressure relief channel 220.

[0124] Furthermore, when the pressure relief channel 220 is a through hole 226 , the cross section of the pressure relief channel 220 is circular, and the pressure relief channel 220 can be processed by a drilling process.

[0125] When the pressure relief channel 220 is a groove 228, the cross-section of the pressure relief channel 220 is semicircular, rectangular or square, and the groove 228 can be processed by the channel milling process. When milling the groove 228, the axial end faces of each component of the pump assembly 200 can be used as processing planes, and there is no need to additionally process the process planes required for processing, making the processing of the pressure relief channel 220 more convenient.

[0126] Furthermore, the cross section of the pressure relief channel 220 may also be an irregular shape.

[0127] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0128] like Figure 1 and Figure 3 As shown, the ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the first exhaust port 232 is less than or equal to 0.1.

[0129] The ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the second exhaust port 234 is less than or equal to 0.1.

[0130] The sum of the flow area of ​​the first exhaust port 232 and the flow area of ​​the second exhaust port 234 is a first area, and the ratio of the flow area of ​​the pressure relief channel 220 to the first area is less than or equal to 0.1.

[0131] In this embodiment, the ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the first exhaust port 232 is less than or equal to 0.1, thereby preventing the area of ​​the pressure relief channel 220 from being too large and affecting the exhaust volume of the pump assembly 200, thereby ensuring the refrigerant compression efficiency of the pump assembly 200. The ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the second exhaust port 234 is less than or equal to 0.1, or the sum of the flow area of ​​the first exhaust port 232 and the flow area of ​​the second exhaust port 234 is the first area, and the ratio of the flow area of ​​the pressure relief channel 220 to the first area is less than or equal to 0.1. This can also prevent the area of ​​the pressure relief channel 220 from being too large and affecting the exhaust volume of the pump assembly 200, thereby ensuring the refrigerant compression efficiency of the pump assembly 200.

[0132] Specifically, the flow area of ​​the pressure relief channel 220 is the area of ​​the cross section of the pressure relief channel 220. Figure 3 The direction indicated by the arrow D is the cross section of the pressure relief channel 220 , and the area of ​​the cross section is the flow area of ​​the pressure relief channel 220 .

[0133] The flow area of ​​the first exhaust port 232 is the cross-sectional area of ​​the first exhaust port 232 . Specifically, the cross-sectional area of ​​the first exhaust port 232 along the radial direction of the pump assembly 200 is the flow area of ​​the first exhaust port 232 . Alternatively, the flow area of ​​the first exhaust port 232 can be calculated by projecting the first exhaust port 232 onto a radial cross-sectional area of ​​the pump assembly 200 along the axial direction of the pump assembly 200 .

[0134] The flow area of ​​the second exhaust port 234 is the area of ​​the cross section of the second exhaust port 234 , that is, the area of ​​the cross section of the second exhaust port 234 along the radial direction of the pump assembly 200 is the flow surface of the second exhaust port 234 . Alternatively, the second exhaust port 234 is projected onto a radial cross section of the pump assembly 200 along the axial direction of the pump assembly 200, and the projected area is the flow area of ​​the second exhaust port 234 .

[0135] When there are multiple pressure relief channels 220 , the flow area of ​​the pressure relief channels 220 is the sum of the cross-sectional areas of the multiple pressure relief channels 220 .

[0136] Furthermore, the ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the first exhaust port 232 is greater than or equal to 0.01.

[0137] The ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the first exhaust port 232 is 0.01.

[0138] The ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the first exhaust port 232 is 0.03.

[0139] The ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the first exhaust port 232 is 0.07.

[0140] The ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the first exhaust port 232 is 0.1.

[0141] Furthermore, the ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the second exhaust port 234 is greater than or equal to 0.01.

[0142] The ratio of the flow area of ​​the pressure relief channel 220 to the flow area of ​​the second exhaust port 234 is 0.01.

[0143] The ratio of the flow area of ​​the pressure relief passage 220 to the flow area of ​​the second exhaust port 234 is 0.03.

[0144] The ratio of the flow area of ​​the pressure relief passage 220 to the flow area of ​​the second exhaust port 234 is 0.07.

[0145] The ratio of the flow area of ​​the pressure relief passage 220 to the flow area of ​​the second exhaust port 234 is 0.1.

[0146] Furthermore, the sum of the flow area of ​​the first exhaust port 232 and the flow area of ​​the second exhaust port 234 is a first area, and the ratio of the flow area of ​​the pressure relief channel 220 to the first area is greater than or equal to 0.01.

[0147] The ratio of the flow area of ​​the pressure relief channel 220 to the first area is 0.01.

[0148] The ratio of the flow area of ​​the pressure relief channel 220 to the first area is 0.03.

[0149] The ratio of the flow area of ​​the pressure relief channel 220 to the first area is 0.07.

[0150] The ratio of the flow area of ​​the pressure relief channel 220 to the first area is 0.1.

[0151] This embodiment provides a compression assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0152] The number of the pressure relief channels 220 is greater than or equal to one and less than or equal to six.

[0153] In this embodiment, the number of pressure relief channels 220 is greater than or equal to 1 and less than or equal to 6, so that the pressure relief channels 220 can be arranged according to the needs of pressure relief flow, and can also be arranged according to the structure of each component of the pump assembly 200, further improving the flexibility of the arrangement of the pressure relief channels 220.

[0154] Furthermore, the number of the communication channels 210 is multiple, and the multiple communication channels 210 are arranged along the circumference of the pump assembly 200 ( Figure 4 Each communicating channel 210 is provided with a pressure relief channel 220 or multiple pressure relief channels 220; or at least one communicating channel 210 among the multiple communicating channels 210 may be provided with at least one pressure relief channel 220.

[0155] There is one communication channel 210 . Along the axial direction of the pump assembly 200 , one communication channel 210 may be provided with one pressure relief channel 220 , or multiple pressure relief channels 220 may be provided.

[0156] In one embodiment of the present invention, a compressor is provided, comprising the compression assembly 100 as described in any of the above embodiments. Therefore, the compressor has all the beneficial effects of the compression assembly 100 as described in any of the above embodiments.

[0157] Furthermore, the compressor includes a housing and a motor. The compression assembly 100 is disposed in the housing. The motor is connected to the crankshaft 110, thereby driving the pump assembly 200 to compress the refrigerant.

[0158] The external space of the pump assembly 200 is the suction chamber of the compressor.

[0159] In one embodiment of the present invention, a refrigeration device is provided, comprising the compression assembly 100 according to any one of the above embodiments, or the compressor according to any one of the above embodiments.

[0160] Refrigeration equipment includes air conditioners, refrigerators, wine cabinets, display cabinets or freezers.

[0161] In the claims, specification and drawings of the present invention, the term "plurality" refers to two or more. Unless otherwise expressly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of more conveniently describing the present invention and making the description process simpler. It is not intended to indicate or imply that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions cannot be understood as limiting the present invention. The terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0162] In the claims, specification, and drawings of the present invention, the terms "one embodiment," "some embodiments," "a specific embodiment," and the like mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification, and drawings of the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0163] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A compression assembly, characterized in that: include: crankshaft; a pump assembly, the pump assembly being sleeved on the crankshaft, the pump assembly being provided with a first exhaust port, a second exhaust port and a communication channel; a first muffler, the first muffler being arranged on a first side of the pump assembly in the axial direction and covered with a cover at the first exhaust port, the first muffler and the pump assembly enclosing a first muffler cavity; a second muffler, the second muffler being arranged on a second side of the pump assembly in the axial direction and having a cover disposed on the second exhaust port, the second muffler and the pump assembly enclosing a second muffler cavity, the second muffler cavity being connected to the first muffler cavity through the communicating channel; Wherein, the pump assembly is provided with a pressure relief channel, one end of the pressure relief channel is communicated with the communication channel, and the other end of the pressure relief channel is communicated with the external space of the pump assembly.

2. The compression assembly according to claim 1, wherein The pump assembly comprises: a first bearing, wherein the first bearing is sleeved on the crankshaft, and the first muffler is connected to the first bearing; a first pump body, the first pump body being arranged on a side of the first bearing away from the first muffler; a partition plate, the partition plate being arranged on a side of the first pump body away from the first bearing; a second pump body, the second pump body being arranged on a side of the partition away from the first pump body; a second bearing, the second bearing being arranged on a side of the second pump body away from the partition, and the second muffler being connected to the second bearing; The communication passage axially penetrates the first bearing, the first pump body, the partition plate, the second pump body, and the second bearing.

3. The compression assembly according to claim 2, wherein: The pressure relief channel is provided on the partition plate.

4. The compression assembly according to claim 3, wherein The pressure relief channel is a through hole that passes through the communication channel and the external space of the pump assembly; or The pressure relief channel is a groove on the axial end surface of the partition plate, one end of the groove is communicated with the communication channel, and the other end is communicated with the external space of the pump assembly.

5. The compression assembly according to claim 3, wherein: The pressure relief channel extends in a radial direction of the partition plate.

6. The compression assembly according to claim 2, wherein: The pressure relief channel includes: a first channel extending in a radial direction of the pump assembly, wherein a first end of the first channel is in communication with the communication channel; The second channel extends in the axial direction of the pump assembly, a first end of the second channel is communicated with the second end of the first channel, and a second end of the second channel extends to the axial end surface of the partition.

7. The compression assembly according to claim 2, wherein: The pressure relief channel is provided on the first bearing, the first pump body, the second pump body and / or the second bearing.

8. The compression assembly according to claim 1, wherein The cross section of the pressure relief channel is circular, semicircular, elliptical, triangular, rectangular or square.

9. The compression assembly according to any one of claims 1 to 8, characterized in that The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the first exhaust port is less than or equal to 0.1; or The ratio of the flow area of ​​the pressure relief channel to the flow area of ​​the second exhaust port is less than or equal to 0.1; or The sum of the flow area of ​​the first exhaust port and the flow area of ​​the second exhaust port is a first area, and the ratio of the flow area of ​​the pressure relief channel to the first area is less than or equal to 0.

1.

10. The compression assembly according to any one of claims 1 to 8, characterized in that The number of the pressure relief channels is greater than or equal to 1 and less than or equal to 6.

11. A compressor, characterized in that: Comprising a compression assembly as claimed in any one of claims 1 to 10.

12. A refrigeration device, characterized in that: include: A compression assembly as claimed in any one of claims 1 to 10; or The compressor of claim 11.

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