Pump assembly with refrigerating machine oil drainage channel and compressor

Abstract

The invention relates to the technical field of compressors, and discloses a pump assembly with a refrigerating machine oil drainage channel and a compressor, the pump assembly comprises an upper support and a silencing cover, the upper support comprises a base and a shaft sleeve, one end of the shaft sleeve is connected to the middle of the base, and the other end of the shaft sleeve is connected to the silencing cover; a first through hole communicated with the shaft sleeve is formed in the position, corresponding to the shaft sleeve, of the base, a second through hole used for being connected with a flange is formed in the edge of the base, the base is covered with the noise reduction cover, the second through hole is not covered with the noise reduction cover, and the noise reduction cover covers the second through hole. A third through hole for the shaft sleeve to penetrate through is formed in the position, corresponding to the shaft sleeve, of the silencing cover. The compressor has the following technical effects that refrigerating machine oil brought out by rotation of the inner shaft of the shaft sleeve is drained to the bottom of the compressor through the drainage channel, the atomization amount and the oil discharge amount of the refrigerating machine oil are reduced, and the energy efficiency of a refrigerating system and the reliability of the compressor are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a pump assembly and a compressor with a refrigeration oil drainage channel. Background Art

[0002] Typically, a rotary compressor is composed of a pump assembly, a motor assembly, a housing assembly, refrigeration oil, a filter bottle and other components; wherein the pump assembly is composed of an upper support, a cylinder body, a shaft, a spiral vane, a ring, a silencer cover and the like, and the shaft is installed in a sleeve on the upper support. When the compressor is working, the refrigeration oil is sucked in from the lower part of the shaft, flows into the pump through the shaft oil hole, and finally flows out from the gap between the sleeve on the upper support and the shaft, flows through the outer periphery of the sleeve, and flows to the refrigerant exhaust port, where it is atomized to form a mixture after combining with the gaseous refrigerant discharged from the exhaust port. After the mixture passes through the refrigerant channel of the motor assembly, part of the refrigeration oil is discharged from the compressor along with the refrigerant.

[0003] However, a large amount of refrigeration oil is discharged from the compressor along with the refrigerant and reaches the condenser, which will not only seriously affect its heat exchange efficiency and reduce the energy efficiency of the whole machine, but also insufficient refrigeration oil will cause the pump to be unable to be lubricated, and in severe cases it may even cause the pump to get stuck and damage the compressor. Summary of the invention

[0004] In order to address the deficiencies of the prior art, the present invention provides a pump assembly and a compressor with a refrigeration oil drainage channel, which enables the refrigeration oil brought out by the rotation of the inner shaft of the sleeve to be drained to the bottom of the compressor through the drainage channel, thereby reducing the amount of refrigeration oil atomization and oil discharge, and improving the energy efficiency of the refrigeration system and the reliability of the compressor.

[0005] The technical objectives to be achieved by the present invention are achieved through the following technical solutions:

[0006] The present invention provides a pump assembly with a refrigeration oil drainage channel, the pump assembly comprising an upper support and a muffler cover;

[0007] The upper support includes a base and a sleeve, one end of the sleeve is connected to the middle of the base, a first through hole connected to the sleeve is formed on the base at a position corresponding to the sleeve, and a second through hole for flange connection is formed at the edge of the base;

[0008] The muffler cover is arranged on the base, and the muffler cover does not cover the second through hole, and a third through hole for the shaft sleeve to pass through is formed on the muffler cover at a position corresponding to the shaft sleeve;

[0009] A drainage channel for circulating refrigeration oil is formed between the shaft sleeve, the muffler cover and the second through hole.

[0010] In some implementations, the drainage channel includes a first drainage portion located on the sleeve and a second drainage portion located on the outer surface of the muffler, the first drainage portion is connected to the second drainage portion, and the second drainage portion is connected to the second through hole;

[0011] The first drainage portion is used to drain the refrigeration oil brought out by the rotation of the shaft in the sleeve, so as to achieve the purpose of draining the refrigeration oil to the bottom of the compressor through the drainage channel.

[0012] In some implementations, the first drainage portion includes an oil storage groove formed downwardly on the upper end surface of the sleeve and a communication groove located on the outer surface of the sleeve;

[0013] One end of the connecting groove is connected to the oil storage tank, and the other end of the connecting groove is connected to the second drainage part. The oil storage tank cooperates with the structural design of the connecting groove to better lead the refrigeration oil out from between the sleeve and the shaft. The existence of the oil storage tank can reduce the load pressure of the shaft and improve the reliability of the compressor.

[0014] In some implementations, the soundproof cover includes a panel and a cover body protruding upward from the middle of the panel, the edge of the panel is connected to the base, and the third through hole is formed on the cover body;

[0015] The cover body is also formed with a fourth through hole for gas to pass through, and the second drainage portion is not connected to the fourth through hole, so as to prevent the refrigeration oil from atomizing and forming a mixture after combining with the gaseous refrigerant discharged from the fourth through hole, thereby reducing the atomization amount of the refrigeration oil and reducing the oil discharge amount.

[0016] In some implementations, the pump assembly further includes a cylinder connected to the base, wherein the base is located between the muffler cover and the cylinder;

[0017] A blade groove for installing a blade is opened at a position corresponding to the second through hole on the cylinder body, and the blade groove is connected to the second through hole, so that the refrigeration oil drawn out through the drainage channel flows through the blade groove, improving the lubrication of the blades in the blade groove and the cylinder body, and improving the performance of the compressor.

[0018] In some implementations, the drainage channel includes a first drainage portion and a second drainage portion, the first drainage portion is formed on the sleeve, and the second drainage portion is a bracket mounted between the sleeve and an edge of the base;

[0019] One end of the bracket is connected to the first drainage part, and the other end of the bracket is connected to the second through hole;

[0020] The first drainage portion is used to drain the refrigeration oil brought out by the rotation of the shaft in the sleeve, and the bracket is used to drain the refrigeration oil at the first drainage portion to the second through hole, so as to achieve the purpose of draining the refrigeration oil to the bottom of the compressor through the drainage channel.

[0021] In some implementations, an inner chamfer is formed at the upper end of the sleeve, and the inner chamfer is connected to the first drainage portion. Forming the inner chamfer at the upper end of the sleeve can better guide the refrigeration oil out from between the sleeve and the shaft.

[0022] In some implementations, the first drainage portion includes a horizontal groove formed on the upper end surface of the sleeve and a vertical groove formed on the outer surface of the sleeve, one end of the horizontal groove is connected to the inner chamfer, and the other end of the horizontal groove is connected to the vertical groove;

[0023] The vertical groove is connected to the second drainage part, so as to achieve the effect of connecting the first drainage part with the second drainage part.

[0024] In some implementations, the bracket is a U-shaped bracket, and a fifth through hole is opened on the bracket at a position corresponding to the second through hole, so that the refrigeration oil flows into the second through hole through the fifth through hole and then into the cylinder body and the bottom of the compressor, reducing the oil discharge amount.

[0025] The present application also provides a compressor, comprising any of the pump components described above, which can prevent a large amount of refrigeration oil from being atomized and discharged from the compressor, thereby improving the performance of the compressor.

[0026] In summary, the present invention has at least the following benefits:

[0027] 1. The pump assembly provided by the present invention forms a drainage channel for the circulation of refrigeration oil between the shaft sleeve, the silencer cover and the second through hole, so that the refrigeration oil brought out by the rotation of the shaft in the shaft sleeve can be drained to the bottom of the compressor through the drainage channel, thereby reducing the amount of refrigeration oil atomization and oil discharge, ensuring the lubrication effect, and improving the energy efficiency and reliability of the refrigeration system.

[0028] 2. The compressor provided by the present invention, after applying the pump assembly with the refrigeration oil drainage channel, can prevent a large amount of refrigeration oil from being atomized and discharged from the compressor, thereby improving the performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a pump assembly provided in Example 1 of the present invention;

[0030] Figure 2 and Figure 3 A schematic structural diagram of an upper support from different viewing angles provided in Example 1 of the present invention;

[0031] Figure 4 A schematic diagram of the structure of a soundproof cover provided in Embodiment 1 of the present invention;

[0032] Figure 5 A cross-sectional view of a pump assembly provided in Example 1 of the present invention;

[0033] Figure 6 A schematic diagram of the structure of a pump assembly provided in Example 2 of the present invention;

[0034] Figure 7 A schematic diagram of the structure of a cylinder provided in Example 2 of the present invention;

[0035] Figure 8 and Fig. 9 A schematic diagram of the structures of two pump assemblies provided in Example 3 of the present invention;

[0036] Fig.10 A schematic diagram of the structure of an upper support provided in Example 3 of the present invention;

[0037] Fig.11 A schematic diagram of the structure of a soundproof cover provided in Embodiment 3 of the present invention;

[0038] Fig.12 A schematic diagram of the structure of the second drainage part provided in Example 3 of the present invention;

[0039] Fig.13 A schematic diagram of the structure of a compressor provided in Example 4 of the present invention;

[0040] 100. Pump assembly;

[0041] 200, upper support; 210, base; 211, first through hole; 212, second through hole; 220, shaft sleeve; 221, inner chamfer;

[0042] 300, muffler cover; 310, third through hole; 320, panel; 330, cover body; 340, fourth through hole;

[0043] 400, drainage channel; 410, first drainage portion; 411, oil storage tank; 412, connecting groove; 413, horizontal groove; 414, vertical groove; 420, second drainage portion; 421, fifth through hole;

[0044] 500, cylinder body; 510, blade groove;

[0045] 600. Compressor. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of them.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Embodiment 1:

[0049] See also Figure 1-Figure 5 A pump assembly with a refrigeration oil drainage channel is understood in combination with the structure of a traditional pump assembly. It can be known that the pump assembly usually includes an upper support, a cylinder body, a shaft, a spiral sheet, a ring and a silencer cover, etc., and the part involving the refrigeration oil drainage channel 400 in this embodiment is mainly the innovation of the upper support 200 and the silencer cover 300. Therefore, for other components not mentioned in this embodiment, the structure of the traditional pump assembly and the connection relationship between the components can be referred to for understanding, and this will not be repeated in this embodiment.

[0050] The pump assembly 100 includes an upper support 200 and a silencer cover 300. The upper support 200 includes a base 210 and a sleeve 220. One end of the sleeve 220 is connected to the middle of the base 210. A first through hole 211 connected to the sleeve 220 is formed at a position corresponding to the sleeve 220 on the base 210. A second through hole 212 for flange connection is formed at the edge of the base 210.

[0051] See also Figure 2 and Figure 3 In this embodiment, the base 210 adopts a circular base 210 structure, the sleeve 220 is a hollow structure, the sleeve 220 includes two openings opposite to each other along its axial direction, one end opening of the sleeve 220 is connected to the middle of the base 210, and correspondingly, a first through hole 211 connected to the sleeve 220 is formed at a position on the base 210 connected to the sleeve 220. Combined with the overall structure of the pump assembly, it can be understood that one end of the shaft passes through the first through hole 211 and the sleeve 220 in sequence and is exposed outside the sleeve 220. The first through hole 211 and the sleeve 220 limit the position and rotation of the shaft.

[0052] The silencer cover 300 is disposed on the base 210. Specifically, the connection between the silencer cover 300 and the base 210 can be sealed to improve the silencer cover 300's noise reduction effect on the noise generated during the operation of the pump assembly.

[0053] The silencer cover 300 does not cover the second through hole 212 . On the one hand, the silencer cover 300 is prevented from affecting the flange connection function of the second through hole 212 . On the other hand, the size of the silencer cover 300 can be reduced accordingly, thereby reducing the material cost.

[0054] A third through hole 310 for the shaft sleeve 220 to pass through is formed on the silencer cover 300 at a position corresponding to the shaft sleeve 220 , thereby establishing a positional relationship between the silencer cover 300 and the base 210 and the shaft sleeve 220 .

[0055] A drainage channel 400 for circulating the refrigeration oil is formed between the shaft sleeve 220 , the muffler cover 300 and the second through hole 212 .

[0056] It can be known that in the complete pump assembly structure, one end of the shaft passes through the first through hole 211 and the sleeve 220 in sequence and is exposed outside the sleeve 220. When the compressor is working, the refrigeration oil is sucked from the lower part of the shaft, flows into the pump through the shaft oil hole, and finally flows out from the gap between the sleeve 220 and the shaft on the upper support 200, flows through the outer periphery of the sleeve 220, flows to the refrigerant exhaust port, and is atomized to form a mixture after combining with the gaseous refrigerant discharged from the exhaust port. After the mixture passes through the refrigerant channel of the motor assembly, part of the refrigeration oil is discharged from the compressor along with the refrigerant, thereby affecting the energy efficiency of the refrigeration system and the reliability of the compressor.

[0057] In response to the above problems, in this embodiment, a drainage channel 400 for the circulation of refrigeration oil is formed between the sleeve 220, the silencer 300 and the second through hole 212, so that when the compressor is working, the refrigeration oil is sucked from the lower part of the shaft, flows into the pump through the shaft oil hole, flows out from the gap between the sleeve 220 and the shaft, and passes through the sleeve 220, the silencer 300 and the drainage channel 400 corresponding to the second through hole 212 in sequence, and finally flows into the bottom of the compressor from the second through hole 212, thereby achieving the purpose of reducing the atomization amount and oil discharge amount of the refrigeration oil and improving the energy efficiency of the refrigeration system and the reliability of the compressor.

[0058] See also Figure 2 , Figure 4 and Figure 5 In some embodiments, the drainage channel 400 includes a first drainage portion 410 located on the sleeve 220 and a second drainage portion 420 located on the outer surface of the silencer 300, the first drainage portion 410 is connected to the second drainage portion 420, and the second drainage portion 420 is connected to the second through hole 212, wherein the first drainage portion 410 is used to drain the refrigeration oil brought out by the rotation of the inner shaft of the sleeve 220.

[0059] Since the refrigeration oil led out by the drainage channel 400 comes from the gap between the sleeve 220 and the shaft when the shaft rotates, and flows out to the outer periphery of the sleeve 220, the first drainage part 410 is arranged on the sleeve 220 to lead the refrigeration oil out from the source to avoid leakage at the source, thereby achieving the purpose of better reducing the amount of refrigeration oil atomization and oil discharge.

[0060] In combination with the foregoing content, it can be known that a third through hole 310 for the sleeve 220 to pass through is formed at a position on the silencer 300 corresponding to the sleeve 220. Therefore, it can be understood that after the refrigeration oil flows out from the gap between the sleeve 220 and the shaft to the periphery of the sleeve 220, it will gradually disperse to the outer surface of the silencer 300. Here, the second drainage part 420 is arranged on the outer surface of the silencer 300, and the first drainage part 410 and the second drainage part 420 are connected. In this way, the refrigeration oil in the first drainage part 410 can be drained through the second drainage part 420 and drained to the second through hole 212, thereby achieving the purpose of draining the refrigeration oil to the bottom of the compressor through the drainage channel 400.

[0061] Furthermore, the first drainage portion 410 includes an oil storage groove 411 formed downwardly on the upper end surface of the sleeve 220 and a connecting groove 412 located on the outer surface of the sleeve 220 , one end of the connecting groove 412 is connected to the oil storage groove 411 , and the other end of the connecting groove 412 is connected to the second drainage portion 420 .

[0062] Specifically, the circumferential cross-section of the sleeve 220 is an annular structure. When the shaft rotates, the refrigeration oil flowing out from the gap between the sleeve 220 and the shaft will flow out along the circumference of the sleeve 220. In this way, an oil storage groove 411 is formed downward on the upper end surface of the sleeve 220. The circumferential cross-section of the oil storage groove 411 is also an annular structure. The oil storage groove 411 with this structural design can circumferentially collect and drain the refrigeration oil flowing out along the circumference of the sleeve 220, effectively avoiding the situation where part of the refrigeration oil flows out through the drainage channel 400.

[0063] The connecting grooves 412 are distributed along the circumference of the outer surface of the sleeve 220 so as to drain the refrigeration oil in the oil storage tank 411 located at the upper end of the sleeve 220 to the lower end of the sleeve 220, and finally flow into the bottom of the compressor through the second drainage part 420 through the second through hole 212.

[0064] In this embodiment, the oil storage tank 411 cooperates with the structural design of the connecting groove 412 to better draw out the refrigeration oil from between the sleeve 220 and the shaft. The existence of the oil storage tank 411 can reduce the load pressure of the shaft and improve the reliability of the compressor.

[0065] See also Figure 4In some embodiments, the soundproof cover 300 includes a panel 320 and a cover body 330 protruding upward from the middle of the panel 320 , the edge of the panel 320 is connected to the base 210 , and the third through hole 310 is formed on the cover body 330 .

[0066] A fourth through hole 340 for gas to pass through is also formed on the cover body 330. The second drainage portion 420 is not connected to the fourth through hole 340, so as to prevent the refrigeration oil from atomizing and forming a mixture after combining with the gaseous refrigerant discharged from the fourth through hole 340, thereby reducing the amount of refrigeration oil atomization and the amount of oil discharged.

[0067] It should be noted that, in this embodiment, there is no specific restriction on the specific position of the second drainage part 420 on the outer surface of the silencer 300, and the number and size of the second drainage part 420. It is only necessary to ensure that the second drainage part 420 is used to connect the first drainage part 410 and the second through hole 212, while avoiding the position of the fourth through hole 340. The specific position, number and size of the second drainage part 420 can be adjusted according to actual needs.

[0068] Combined with the background technology, it can be understood that the fourth through hole 340 is the exhaust port in the background technology. Under conventional design, the refrigeration oil will flow to the exhaust port through the periphery of the sleeve 220, and after combining with the gaseous refrigerant discharged from the exhaust port, it will be atomized to form a mixture, and finally discharged from the compressor. In this embodiment, the second drainage part 420 and the fourth through hole 340 are avoided to ensure that the refrigeration oil passing through the second drainage part 420 will not flow to the exhaust port. At the same time, the second drainage part 420 is connected to the first drainage part 410, that is, the entire drainage channel 400 does not involve the exhaust port, ensuring the effect of reducing the atomization amount of the refrigeration oil and the oil discharge amount.

[0069] The pump assembly provided in this embodiment forms a drainage channel 400 for the circulation of refrigeration oil between the sleeve 220, the silencer cover 300 and the second through hole 212. The refrigeration oil brought out by the rotation of the shaft in the sleeve 220 can be drained to the bottom of the compressor through the drainage channel 400, thereby reducing the amount of refrigeration oil atomization and oil discharge, ensuring the lubrication effect, and improving the energy efficiency and reliability of the refrigeration system.

[0070] Embodiment 2:

[0071] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the pump assembly of the present invention, see Figure 6 and Figure 7 .

[0072] The pump assembly also includes a cylinder body 500 connected to the base 210, and the base 210 is located between the silencer cover 300 and the cylinder body 500. For example, the base 210 includes a first surface and a second surface arranged opposite to each other, the sleeve 220 and the silencer cover 300 are connected to the first surface of the base 210, and the cylinder body 500 is connected to the second surface of the base 210, that is, the base 210 is located between the silencer cover 300 and the cylinder body 500.

[0073] A blade groove 510 for installing blades is opened at a position corresponding to the second through hole 212 on the cylinder body 500. The blade groove 510 is connected to the second through hole 212, so that the refrigeration oil drawn out through the drainage channel 400 flows through the blade groove 510, thereby improving the lubrication of the blades in the blade groove 510 and the cylinder body 500 and improving the performance of the compressor.

[0074] Embodiment 3:

[0075] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the drainage channel 400 of the present invention, see Figure 8-Figure 12 .

[0076] See also Figure 8 and Fig. 9 The drainage channel 400 includes a first drainage portion 410 and a second drainage portion 420 . The first drainage portion 410 is formed on the sleeve 220 , and the second drainage portion 420 is a bracket mounted between the sleeve 220 and the edge of the base 210 .

[0077] Since the refrigeration oil led out by the drainage channel 400 comes from the gap between the sleeve 220 and the shaft when the shaft rotates, and flows out to the outer periphery of the sleeve 220, the first drainage part 410 is arranged on the sleeve 220 to lead the refrigeration oil out from the source to avoid leakage at the source, thereby achieving the purpose of better reducing the amount of refrigeration oil atomization and oil discharge.

[0078] The first drainage portion 410 is used to draw out the refrigeration oil brought out by the rotation of the shaft in the sleeve 220. After the refrigeration oil is drawn out through the first drainage portion 410, in order to prevent the refrigeration oil from flowing to the refrigerant exhaust port, in this embodiment, a bracket is set between the edge of the sleeve 220 and the base 210 to form a second drainage portion 420, and one end of the bracket is connected to the first drainage portion 410, and the other end of the bracket is connected to the second through hole 212. The bracket is used to drain the refrigeration oil at the first drainage portion 410 to the second through hole 212, thereby achieving the purpose of draining the refrigeration oil to the bottom of the compressor through the drainage channel 400.

[0079] See also Fig.10In some embodiments, an inner chamfer 221 is formed at the upper end of the sleeve 220, and the inner chamfer 221 is connected to the first drainage portion 410. The inner chamfer 221 is formed at the upper end of the sleeve 220, which can better draw out the refrigeration oil from between the sleeve 220 and the shaft.

[0080] Specifically, the circumferential cross-section of the sleeve 220 is an annular structure. When the shaft rotates, the refrigeration oil flowing out from the gap between the sleeve 220 and the shaft will flow out along the circumference of the sleeve 220. In this way, an inner chamfer 221 is formed at the upper end of the sleeve 220. Utilizing the structure of the inner chamfer 221, the refrigeration oil flowing out along the circumference of the sleeve 220 is gathered at the inner chamfer 221 and led out to the first drainage portion 410, thereby effectively preventing part of the refrigeration oil from flowing out without passing through the drainage channel 400.

[0081] Furthermore, the first drainage portion 410 includes a horizontal groove 413 formed on the upper end surface of the sleeve 220 and a vertical groove 414 formed on the outer surface of the sleeve 220, one end of the horizontal groove 413 is connected to the inner chamfer 221, and the other end of the horizontal groove 413 is connected to the vertical groove 414, and the vertical groove 414 is connected to the second drainage portion 420, thereby achieving the effect of connecting the first drainage portion 410 with the second drainage portion 420.

[0082] See also Fig.12 In some embodiments, the bracket is a U-shaped bracket, and a fifth through hole 421 is opened on the bracket at a position corresponding to the second through hole 212, so that the refrigeration oil flows into the second through hole 212 through the fifth through hole 421, and then enters the cylinder body 500 and the bottom of the compressor, reducing the oil discharge amount.

[0083] It should be noted that the bracket can also be a V-shaped bracket or other structure that can form a flow channel to achieve the function of draining the refrigeration oil in the first drainage part 410 to the second through hole 212. The specific structure of the bracket is not limited in this example.

[0084] like Figure 8 and Fig. 9 As shown, the whole bracket can be in a curved state or a straight state, which can be adjusted according to actual needs and is not limited here. The bracket can be made of sheet metal, such as stainless steel, and the slope and tension of the stainless steel material can be used to better install and fix the bracket. Specifically, one end of the bracket is connected to the vertical groove 414, and the other end of the bracket is fixed to the edge of the base 210.

[0085] It can be seen from the content of Example 2 that the pump assembly provided in this embodiment can also connect the second through hole 212 with the blade groove on the cylinder body, so that the refrigeration oil drawn out through the drainage channel 400 flows through the blade groove, improving the lubrication of the blades in the blade groove and the cylinder body, and improving the performance of the compressor.

[0086] Embodiment 4:

[0087] This embodiment provides a compressor based on the above embodiment. Fig.13 .

[0088] A compressor, the compressor 600 includes the pump assembly 100 in any of the above embodiments. After applying the pump assembly with a refrigeration oil drainage channel, a large amount of refrigeration oil can be prevented from being atomized and discharged from the compressor, thereby improving the performance of the compressor.

[0089] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0091] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0092] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0093] Although the present invention is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes according to the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A pump assembly with a refrigeration oil drainage channel, It is characterized in that The pump assembly (100) comprises an upper support (200) and a silencer cover (300); The upper support (200) comprises a base (210) and a sleeve (220), one end of the sleeve (220) is connected to the middle of the base (210), a first through hole (211) connected to the sleeve (220) is formed at a position on the base (210) corresponding to the sleeve (220), and a second through hole (212) for flange connection is formed at an edge of the base (210); The muffler cover (300) is disposed on the base (210), and the muffler cover (300) does not cover the second through hole (212); a third through hole (310) for the shaft sleeve (220) to pass through is formed on the muffler cover (300) at a position corresponding to the shaft sleeve (220); A drainage channel (400) for circulating refrigeration oil is formed between the shaft sleeve (220), the silencer cover (300) and the second through hole (212).

2. The pump assembly with a refrigeration oil drainage channel according to claim 1, It is characterized in that The drainage channel (400) comprises a first drainage portion (410) located on the shaft sleeve (220) and a second drainage portion (420) located on the outer surface of the muffler cover (300), the first drainage portion (410) being connected to the second drainage portion (420), and the second drainage portion (420) being connected to the second through hole (212); The first drainage portion (410) is used to drain the refrigeration oil brought out by the rotation of the shaft inside the sleeve (220).

3. The pump assembly with a refrigeration oil drainage channel according to claim 2, It is characterized in that The first drainage portion (410) comprises an oil storage groove (411) formed downwardly on the upper end surface of the shaft sleeve (220) and a connecting groove (412) located on the outer surface of the shaft sleeve (220); One end of the communicating groove (412) is connected to the oil storage groove (411), and the other end of the communicating groove (412) is connected to the second drainage portion (420).

4. The pump assembly with a refrigeration oil drainage channel according to claim 2, It is characterized in that The muffler cover (300) comprises a panel (320) and a cover body (330) protruding upward from the middle of the panel (320), the edge of the panel (320) is connected to the base (210), and the third through hole (310) is formed on the cover body (330); The cover body (330) is also formed with a fourth through hole (340) for gas to pass through, and the second drainage portion (420) is not connected to the fourth through hole (340).

5. The pump assembly with a refrigeration oil drainage channel according to claim 1, It is characterized in that The pump assembly further comprises a cylinder body (500) connected to the base (210), wherein the base (210) is located between the muffler cover (300) and the cylinder body (500); A blade groove (510) for installing a blade is provided on the cylinder body (500) at a position corresponding to the second through hole (212), and the blade groove (510) is connected to the second through hole (212).

6. The pump assembly with a refrigeration oil drainage channel according to claim 1, It is characterized in that The drainage channel (400) comprises a first drainage portion (410) and a second drainage portion (420), wherein the first drainage portion (410) is formed on the shaft sleeve (220), and the second drainage portion (420) is a bracket mounted between the shaft sleeve (220) and the edge of the base (210); One end of the bracket is connected to the first drainage portion (410), and the other end of the bracket is connected to the second through hole (212); The first drainage portion (410) is used to drain the refrigeration oil brought out by the rotation of the shaft inside the sleeve (220), and the bracket is used to drain the refrigeration oil at the first drainage portion (410) to the second through hole (212).

7. The pump assembly with a refrigeration oil drainage channel according to claim 6, It is characterized in that An inner chamfer (221) is formed at the upper end of the sleeve (220), and the inner chamfer (221) is connected to the first drainage portion (410).

8. The pump assembly with a refrigeration oil drainage channel according to claim 7, It is characterized in that The first drainage portion (410) comprises a horizontal groove (413) formed on the upper end surface of the shaft sleeve (220) and a vertical groove (414) formed on the outer surface of the shaft sleeve (220), one end of the horizontal groove (413) is connected to the inner chamfer (221), and the other end of the horizontal groove (413) is connected to the vertical groove (414); The vertical groove (414) is connected to the second drainage portion (420).

9. The pump assembly with a refrigeration oil drainage channel according to claim 7, It is characterized in that The bracket is a U-shaped bracket, and a fifth through hole (421) is provided on the bracket at a position corresponding to the second through hole (212).

10. A compressor, It is characterized in that The compressor (600) comprises the pump assembly (100) according to any one of claims 1-9.

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