Pump body assembly for compressor and compressor

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a pump body assembly for a compressor, which comprises a crankshaft, a first cylinder, a second cylinder and a middle partition plate. The end of the crankshaft extends to an oil pool at the bottom of the compressor shell, the crankshaft is provided with a first oil way channel communicating with the oil pool, and the first air cylinder is provided with a first air suction port. The second cylinder is provided with a second air suction port. The middle partition plate is provided with a second oil way channel, the first end of the second oil way channel is communicated with the first oil way channel, and the second end of the second oil way channel is communicated with the first air suction port and the second air suction port. The first oil way channel and the second oil way channel are communicated to form an internal oil way circulation channel of the pump body assembly, the pressure difference in the compressor shell is utilized, a pressure reducing device is arranged in the second oil way channel, oil in an oil pool is stably drained to the first air suction port and the second air suction port, and then the oil flows to a moving part of the pump body assembly. Therefore, reliable lubrication of moving parts is ensured. The invention further discloses the compressor.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, for example, to a pump body assembly for a compressor and a compressor. Background Art

[0002] At present, during the operation of the compressor, the moving parts of the pump assembly, such as rollers and vanes, are mainly lubricated by suction oil to ensure the normal movement of moving parts such as rollers and vanes. When the compressor is running at low suction volume or low temperature, the solubility of the oil in the compressor and the refrigerant is low, and the amount of suction oil is sharply reduced, which can easily lead to lack of oil lubrication and wear of the rollers and vanes, affecting the reliability of the compressor. In the related technology, an external circulation flow path composed of an oil-gas separator, an oil reservoir, a pressure reducing valve and other components is added to the outside of the compressor, so that the oil discharged from the compressor exhaust port is returned from the outside of the compressor to the inside of the compressor to ensure the lubrication of the moving parts inside the compressor.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] In the related art, an external oil circulation flow path is added outside the compressor, and the oil storage capacity of the oil reservoir depends on the oil separation efficiency of the oil-gas separator. When the oil separation efficiency is low, the oil storage capacity of the oil reservoir may be small, thereby failing to ensure reliable lubrication of the moving parts of the pump body assembly, affecting the reliability of the compressor.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiment provides a pump body assembly for a compressor and a compressor, wherein the pump body assembly for the compressor includes a crankshaft, a first cylinder, a second cylinder and a middle partition, wherein a first oil path channel connected to an oil pool at the bottom of a compressor housing is provided on the crankshaft, a second oil path channel having a pressure reducing device is provided on the middle partition, and the first oil path channel is connected to the second oil path channel to form an internal oil path circulation channel of the pump body assembly, and the pressure difference inside the compressor housing is utilized to stably guide the oil in the oil pool at the bottom of the compressor housing to the moving parts of the pump body assembly, thereby ensuring reliable lubrication of the moving parts of the pump body assembly and enhancing the reliability of the compressor.

[0008] In some embodiments, a pump body assembly for a compressor includes a crankshaft, a first cylinder, a second cylinder, and a middle partition. The end of the crankshaft extends to the oil pool at the bottom of the compressor housing, and the crankshaft is provided with a first oil passage, and the first oil passage is connected to the oil pool. The first cylinder is sleeved on the crankshaft, and the first cylinder is provided with a first air intake port. The second cylinder is sleeved on the crankshaft, and the second cylinder is provided with a second air intake port. The middle partition is sleeved on the crankshaft, and the middle partition is arranged between the first cylinder and the second cylinder, and the middle partition is provided with a second oil passage, and the first end of the second oil passage is connected to the first oil passage, and the second end is connected to the first air intake port and the second air intake port, wherein the second oil passage is provided with a pressure reducing device.

[0009] In some optional embodiments, the pressure reducing device includes a first pressure reducing valve. The first pressure reducing valve is arranged at the connection point between the second end of the second oil passage and the first air inlet.

[0010] In some optional embodiments, the pressure reducing device includes a second pressure reducing valve. The second pressure reducing valve is arranged at the connection point between the second end of the second oil passage and the second air inlet.

[0011] In some optional embodiments, the pressure reducing device includes a first pressure reducing valve and a second pressure reducing valve. The first pressure reducing valve is arranged at the connection between the second end of the second oil passage and the first air inlet. The second pressure reducing valve is arranged at the connection between the second end of the second oil passage and the second air inlet.

[0012] In some optional embodiments, when the pressure reducing device includes a first pressure reducing valve, the first cylinder is provided with a first pressure reducing groove and a first throttling micro-hole, and the first end of the first throttling micro-hole is connected to the first air intake port. The end surface of the middle partition plate in contact with the first cylinder is provided with a second pressure reducing groove and a second throttling micro-hole connected to the second pressure reducing groove. The second throttling micro-hole corresponds to the second end connected to the first throttling micro-hole to form a first throttling micro-channel, the second pressure reducing groove and the first pressure reducing groove form a first pressure reducing valve cavity, the first pressure reducing valve cavity is connected to the second oil channel, and the first pressure reducing valve is arranged in the first pressure reducing valve cavity.

[0013] In some optional embodiments, when the pressure reducing device includes a second pressure reducing valve, the second cylinder is provided with a third pressure reducing groove and a third throttling microhole, and the first end of the third throttling microhole is connected to the second air intake port. The end surface of the middle partition plate in contact with the second cylinder is provided with a fourth pressure reducing groove and a fourth throttling microhole connected to the fourth pressure reducing groove. The fourth throttling microhole corresponds to the second end connected to the third throttling microhole to form a second throttling microchannel, the fourth pressure reducing groove and the third pressure reducing groove form a second pressure reducing valve cavity, the second pressure reducing valve cavity is connected to the second oil channel, and the second pressure reducing valve is arranged in the second pressure reducing valve cavity.

[0014] In some optional embodiments, the middle partition includes a radially arranged partition inner hole and an axially arranged partition connecting hole, wherein the first end of the partition inner hole is connected to the partition connecting hole to form a second oil passage, and the second end is connected to the first oil passage, and the first end of the partition connecting hole is connected to the second pressure reducing groove, and the second end of the partition connecting hole is connected to the fourth pressure reducing groove.

[0015] In some optional embodiments, the crankshaft includes a rod body and a first eccentric portion and a second eccentric portion disposed on the rod body. The pump body assembly also includes a first roller and a second roller, and the first roller and the second roller are respectively sleeved on the outside of the first eccentric portion and the second eccentric portion. The first cylinder, the first roller, the second cylinder, the second roller and the middle partition are enclosed to form an oil induction and oil storage cavity, and the second end of the inner hole of the partition is connected to the oil induction and oil storage cavity, and the oil induction and oil storage cavity is connected to the first oil passage.

[0016] In some optional embodiments, the crankshaft includes an axially arranged crankshaft inner hole and a radially arranged crankshaft communication hole arranged on the rod body, wherein a first end of the crankshaft inner hole is connected to the crankshaft communication hole to form a first oil passage, and a second end is connected to the oil pool at the bottom of the compressor housing, and the crankshaft communication hole is connected to the oil inlet and oil storage chamber.

[0017] In some optional embodiments, the pump body assembly further includes an oil guide member, which is disposed in the inner hole of the crankshaft and is used to guide the oil in the oil pool at the bottom of the compressor housing to the first oil passage.

[0018] In some optional embodiments, the first end of the oil guide member is located at the second end of the crankshaft inner hole, and the second end is located at the crankshaft communicating hole.

[0019] In some embodiments, a compressor includes the above-described pump body assembly for a compressor.

[0020] The pump body assembly for a compressor and the compressor provided in the embodiments of the present disclosure can achieve the following technical effects:

[0021] The pump body assembly for a compressor provided in an embodiment of the present disclosure includes a crankshaft, a first cylinder, a second cylinder and a middle partition. The end of the crankshaft extends to the oil pool at the bottom of the compressor housing, and the crankshaft is provided with a first oil passage, which is connected to the oil pool and is used to guide the oil in the oil pool at the bottom of the compressor housing to the moving parts of the pump body assembly through the first oil passage. The first cylinder is sleeved on the crankshaft, and the first cylinder is provided with a first air intake port. The second cylinder is sleeved on the crankshaft, and the second cylinder is provided with a second air intake port. The middle partition is sleeved on the crankshaft, and the middle partition is provided between the first cylinder and the second cylinder, and the middle partition is provided with a second oil passage, and the first end of the second oil passage is connected to the first oil passage, and the second end is connected to the first air intake port and the second air intake port. By arranging a pressure reducing device in the second oil passage and connecting the first oil passage with the second oil passage to form an internal oil circulation passage of the pump body assembly, the pressure difference inside the compressor housing is utilized to stably guide the oil in the oil pool at the bottom of the compressor housing to the first air intake port and the second air intake port, and then flow to other moving parts of the pump body assembly, thereby ensuring reliable lubrication of the moving parts of the pump body assembly and enhancing the reliability of the compressor.

[0022] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0024] Figure 1 is a structural schematic diagram of a compressor provided by an embodiment of the present disclosure;

[0025] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle X area;

[0026] Figure 3 is a structural schematic diagram of a first cylinder in a pump assembly for a compressor provided by an embodiment of the present disclosure;

[0027] Figure 4 is a schematic structural diagram of a second cylinder in a pump assembly for a compressor provided by an embodiment of the present disclosure;

[0028] Figure 5 It is a structural schematic diagram of a middle partition in a pump body assembly for a compressor provided by an embodiment of the present disclosure;

[0029] Figure 6 is a schematic structural diagram of a crankshaft in a pump assembly for a compressor provided by an embodiment of the present disclosure;

[0030] Figure 7 yes Figure 1 A partial enlarged schematic diagram of the Y area in the middle, in which the direction of the dotted arrow is a schematic diagram of the flow direction of the oil inside the pump body assembly.

[0031] Reference numerals:

[0032] 10: crankshaft; 11: rod body; 111: crankshaft inner hole; 112: crankshaft connecting hole; 12: first eccentric part; 13: second eccentric part; 14: oil guide member;

[0033] 20: first cylinder; 21: first air intake port; 22: first pressure relief groove; 23: first throttling micro-hole;

[0034] 30: second cylinder; 31: second air intake port; 32: third pressure relief groove; 33: third throttling micro-hole;

[0035] 40: middle partition; 41: inner hole of partition; 42: connecting hole of partition; 43: second pressure relief groove; 44: second throttling micropore; 45: fourth pressure relief groove; 46: fourth throttling micropore;

[0036] 51: first throttling microchannel; 52: second throttling microchannel;

[0037] 61: first roller; 62: second roller.

[0038] 71: first pressure reducing valve; 72: second pressure reducing valve;

[0039] 80: oil inlet and oil storage chamber;

[0040] 91: compressor housing; 92: oil pool. DETAILED DESCRIPTION

[0041] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0042] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0044] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0045] Unless otherwise stated, the term "plurality" means two or more.

[0046] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0047] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0049] At present, during the operation of the compressor, the moving parts of the pump assembly, such as rollers and vanes, are mainly lubricated by suction oil to ensure the normal movement of moving parts such as rollers and vanes. When the compressor is running at low suction volume or low temperature, the solubility of the oil in the compressor and the refrigerant is low, and the amount of suction oil is sharply reduced, which can easily lead to lack of oil lubrication and wear of the rollers and vanes, affecting the reliability of the compressor. In the related technology, an external circulation flow path composed of an oil-gas separator, an oil reservoir, a pressure reducing valve and other components is added to the outside of the compressor, so that the oil discharged from the compressor exhaust port is returned from the outside of the compressor to the inside of the compressor to ensure the lubrication of the moving parts inside the compressor.

[0050] In the related art, an external oil circulation flow path is added outside the compressor, and the oil storage capacity of the oil reservoir depends on the oil separation efficiency of the oil-gas separator. When the oil separation efficiency is low, the oil storage capacity of the oil reservoir may be small, thereby failing to ensure reliable lubrication of the moving parts of the pump body assembly, affecting the reliability of the compressor.

[0051] The disclosed embodiment provides a pump body assembly and a compressor for a compressor, wherein the pump body assembly for the compressor includes a crankshaft 10, a first cylinder 20, a second cylinder 30 and a middle partition 40, wherein a first oil path channel connected to an oil pool 92 at the bottom of a compressor housing 91 is provided on the crankshaft 10, a second oil path channel having a pressure reducing device is provided on the middle partition 40, and the first oil path channel is connected to the second oil path channel to form an internal oil path circulation channel of the pump body assembly, and the pressure difference inside the compressor housing 91 is utilized to stably guide the oil in the oil pool 92 at the bottom of the compressor housing 91 to the moving parts of the pump body assembly, thereby ensuring reliable lubrication of the moving parts of the pump body assembly and enhancing the reliability of the compressor.

[0052] Combination Figures 1 to 6 As shown, the embodiment of the present disclosure provides a pump body assembly for a compressor, including a crankshaft 10, a first cylinder 20, a second cylinder 30 and a middle partition 40. The end of the crankshaft 10 extends to the oil pool 92 at the bottom of the compressor housing 91, and the crankshaft 10 is provided with a first oil passage, and the first oil passage is connected to the oil pool 92. The first cylinder 20 is sleeved on the crankshaft 10, and the first cylinder 20 is provided with a first air intake port 21. The second cylinder 30 is sleeved on the crankshaft 10, and the second cylinder 30 is provided with a second air intake port 31. The middle partition 40 is sleeved on the crankshaft 10, and the middle partition 40 is arranged between the first cylinder 20 and the second cylinder 30, and the middle partition 40 is provided with a second oil passage, and the first end of the second oil passage is connected to the first oil passage, and the second end is connected to the first air intake port 21 and the second air intake port 31, wherein the second oil passage is provided with a pressure reducing device.

[0053] The pump body assembly for a compressor provided in the embodiment of the present disclosure includes a crankshaft 10, a first cylinder 20, a second cylinder 30 and a middle partition 40. The end of the crankshaft 10 extends to the oil pool 92 at the bottom of the compressor housing 91, and the crankshaft 10 is provided with a first oil passage, which is connected to the oil pool 92 and is used to guide the oil in the oil pool 92 at the bottom of the compressor housing 91 to the moving parts of the pump body assembly through the first oil passage. The first cylinder 20 is sleeved on the crankshaft 10, and the first cylinder 20 is provided with a first air intake port 21. The second cylinder 30 is sleeved on the crankshaft 10, and the second cylinder 30 is provided with a second air intake port 31. The middle partition 40 is sleeved on the crankshaft 10, and the middle partition 40 is arranged between the first cylinder 20 and the second cylinder 30, and the middle partition 40 is provided with a second oil passage, and the first end of the second oil passage is connected to the first oil passage, and the second end is connected to the first air intake port 21 and the second air intake port 31. An internal oil circulation channel of the pump body assembly is formed by connecting the first oil circuit channel with the second oil circuit channel, utilizing the pressure difference inside the compressor housing 91, and then setting a pressure reducing device in the second oil circuit channel, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 is stably drained to the first air intake port 21 and the second air intake port 31, and then flows to other moving parts of the pump body assembly, thereby ensuring reliable lubrication of the moving parts of the pump body assembly and enhancing the reliability of the compressor.

[0054] In some optional embodiments, the pressure reducing device includes a first pressure reducing valve 71. The first pressure reducing valve 71 is disposed at the connection point between the second end of the second oil passage and the first air intake port 21.

[0055] In this way, the first pressure reducing valve 71 is arranged at the connection point between the second end of the second oil circuit and the first air intake port 21, so that the first oil circuit channel and the second oil circuit channel are connected to form an internal oil circuit circulation channel of the pump body assembly, and the pressure difference inside the compressor housing 91 is utilized. Due to the action of the first pressure reducing valve 71, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably guided to the first air intake port 21, and the oil in the oil pool 92 at the bottom of the compressor housing 91 can be prevented from splashing at the first air intake port 21, and then flowing to other moving parts of the pump body assembly, thereby ensuring the reliable lubrication of the moving parts of the pump body assembly.

[0056] In some optional embodiments, the pressure reducing device includes a second pressure reducing valve 72. The second pressure reducing valve 72 is disposed at the connection point between the second end of the second oil passage and the second air intake port 31.

[0057] In this way, the second pressure reducing valve 72 is arranged at the connection point between the second end of the second oil circuit and the second air intake port 31, so that the first oil circuit channel and the second oil circuit channel are connected to form an internal oil circuit circulation channel of the pump body assembly, and the pressure difference inside the compressor housing 91 is utilized. Due to the action of the second pressure reducing valve 72, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably guided to the second air intake port 31, and the oil in the oil pool 92 at the bottom of the compressor housing 91 can be prevented from splashing at the second air intake port 31, and then flowing to other moving parts of the pump body assembly, thereby ensuring the reliable lubrication of the moving parts of the pump body assembly.

[0058] In some optional embodiments, the pressure reducing device includes a first pressure reducing valve 71 and a second pressure reducing valve 72. The first pressure reducing valve 71 is disposed at the connection between the second end of the second oil passage and the first air intake port 21. The second pressure reducing valve 72 is disposed at the connection between the second end of the second oil passage and the second air intake port 31.

[0059] In this way, the first pressure reducing valve 71 and the second pressure reducing valve 72 are respectively arranged at the connection between the second end of the second oil passage and the first air intake port 21 and the second air intake port 31. Figure 1 and Figure 2 As shown, the first oil circuit channel is connected with the second oil circuit channel to form an internal oil circuit circulation channel of the pump body assembly. By utilizing the pressure difference inside the compressor housing 91, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably guided to the first air intake port 21 and the second air intake port 31 due to the action of the first pressure reducing valve 71 and the second pressure reducing valve 72, thereby preventing the oil in the oil pool 92 at the bottom of the compressor housing 91 from splashing at the first air intake port 21 and the second air intake port 31, and then flowing to other moving parts of the pump body assembly, thereby ensuring the reliable lubrication of the moving parts of the pump body assembly.

[0060] In some optional embodiments, when the pressure reducing device includes the first pressure reducing valve 71, the first cylinder 20 is provided with a first pressure reducing groove and a first throttling micro-hole 23, and the first end of the first throttling micro-hole 23 is connected to the first air intake port 21. The end surface of the middle partition 40 in contact with the first cylinder 20 is provided with a second pressure reducing groove 43 and a second throttling micro-hole 44 connected to the second pressure reducing groove 43. Among them, the second throttling micro-hole 44 corresponds to the second end connected to the first throttling micro-hole 23 to form a first throttling micro-channel 51, the second pressure reducing groove 43 and the first pressure reducing groove constitute a first pressure reducing valve cavity, the first pressure reducing valve cavity is connected to the second oil channel, and the first pressure reducing valve 71 is arranged in the first pressure reducing valve cavity.

[0061] Combination Figure 3 and Figure 5As shown, when the pressure reducing device includes the first pressure reducing valve 71, the first pressure reducing valve 71 is arranged at the connection between the second end of the second oil passage and the first air intake port 21. The first cylinder 20 is provided with a first pressure reducing groove and a first throttling micro-hole 23, and the first end of the first throttling micro-hole 23 is connected to the first air intake port 21. The end surface of the middle partition 40 in contact with the first cylinder 20 is provided with a second pressure reducing groove 43 and a second throttling micro-hole 44 connected to the second pressure reducing groove 43, and the second throttling micro-hole 44 is connected to the bottom of the second pressure reducing groove 43. By making the second throttling micro-hole 44 correspondingly connected to the second end of the first throttling micro-hole 23 to form the first throttling micro-channel 51, the second pressure reducing groove 43 and the first pressure reducing groove constitute the first pressure reducing valve cavity, and the first pressure reducing valve cavity is connected to the second oil path channel, so that the first pressure reducing valve cavity and the first throttling micro-channel 51 are connected to the second oil path channel, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 can be drained to the first air intake port 21 through the second oil path channel. Further, the first pressure reducing valve 71 is arranged in the first pressure reducing valve cavity, and under the action of the first pressure reducing valve 71, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the first air intake port 21 through the second oil path channel.

[0062] In some optional embodiments, the first pressure reducing valve 71 includes a first elastic member and a first blocking member. The first elastic member is connected to the first blocking member. Here, the first blocking member, under the action of the first elastic member, connects or blocks the first throttling microchannel 51 with the partition connecting hole 42.

[0063] In some optional embodiments, when the pressure reducing device includes the second pressure reducing valve 72, the second cylinder 30 is provided with a third pressure reducing groove and a third throttling micro-hole 33, and the first end of the third throttling micro-hole 33 is connected to the second air intake port 31. The end surface of the middle partition 40 in contact with the second cylinder 30 is provided with a fourth pressure reducing groove 42 and a fourth throttling micro-hole 46 connected to the fourth pressure reducing groove 42. Among them, the fourth throttling micro-hole 46 corresponds to the second end connected to the third throttling micro-hole 33 to form a second throttling micro-channel 52, the fourth pressure reducing groove 42 and the third pressure reducing groove constitute a second pressure reducing valve cavity, the second pressure reducing valve cavity is connected to the second oil channel, and the second pressure reducing valve 72 is arranged in the second pressure reducing valve cavity.

[0064] Combination Figure 4 and Figure 5As shown, in the case where the pressure reducing device includes the second pressure reducing valve 72, the second pressure reducing valve 72 is arranged at the connection between the second end of the second oil passage and the first air intake port 21. The second cylinder 30 is provided with a third pressure reducing groove and a third throttling micro-hole 33, and the first end of the third throttling micro-hole 33 is connected to the second air intake port 31. The end surface of the middle partition 40 in contact with the second cylinder 30 is provided with a fourth pressure reducing groove 42 and a fourth throttling micro-hole 46 connected to the fourth pressure reducing groove 42, where the fourth throttling micro-hole 46 is connected to the bottom of the fourth pressure reducing groove 42. By making the fourth throttling micro-hole 46 correspondingly connected to the second end of the third throttling micro-hole 33 to form a second throttling micro-channel 52, the fourth pressure reducing groove 42 and the third pressure reducing groove constitute a second pressure reducing valve cavity, and the second pressure reducing valve cavity is connected to the second oil path channel, so that the second pressure reducing valve cavity and the second throttling micro-channel 52 are connected to the second oil path channel, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 can be drained to the second air intake port 31 through the second oil path channel. Further, the second pressure reducing valve 72 is arranged in the second pressure reducing valve cavity, and under the action of the second pressure reducing valve 72, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the second air intake port 31 through the second oil path channel.

[0065] In some optional embodiments, the second pressure reducing valve 72 includes a second elastic member and a second blocking member. The second elastic member is connected to the second blocking member. Here, the second blocking member, under the action of the second elastic member, connects or blocks the second throttling microchannel 52 with the partition connecting hole 42.

[0066] In some optional embodiments, the middle partition 40 includes a partition inner hole 41 arranged radially and a partition communication hole 42 arranged axially. The first end of the partition inner hole 41 is connected to the partition communication hole 42 to form a second oil passage, and the second end is connected to the first oil passage, and the first end of the partition communication hole 42 is connected to the second decompression groove 43, and the second end of the partition communication hole 42 is connected to the fourth decompression groove 42.

[0067] In this way, the middle partition 40 includes a partition inner hole 41 arranged radially and a partition connecting hole 42 arranged axially. Figure 5 As shown. Here, the first end of the partition inner hole 41 is connected to the partition connecting hole 42 to form a second oil channel, and the second end is connected to the first oil channel, so that the first oil channel is connected to the second oil channel. Further, the first end and the second end of the partition connecting hole 42 are connected to the second pressure reducing groove 43 and the fourth pressure reducing groove 42 respectively. That is, the two ends of the partition connecting hole 42 are connected to the first pressure reducing valve cavity and the second pressure reducing valve cavity respectively, so that the first oil channel is connected to the second oil channel, and then the oil in the oil pool 92 at the bottom of the compressor housing 91 is stably drained to the first air intake port 21 and the second air intake port 31 through the first throttling microchannel 51 and the second throttling microchannel 52.

[0068] In some optional embodiments, the crankshaft 10 includes a rod body 11 and a first eccentric portion 12 and a second eccentric portion 13 disposed on the rod body 11. The pump body assembly also includes a first roller 61 and a second roller 62, which are respectively sleeved on the outside of the first eccentric portion 12 and the second eccentric portion 13. The first cylinder 20, the first roller 61, the second cylinder 30, the second roller 62 and the middle partition 40 enclose an oil inlet storage chamber 80, and the second end of the partition inner hole 41 is connected to the oil inlet storage chamber 80, and the oil inlet storage chamber 80 is connected to the first oil passage.

[0069] Combination Figure 1 and 6 As shown, the crankshaft 10 includes a rod body 11 and a first eccentric portion 12 and a second eccentric portion 13 arranged on the rod body 11. The pump body assembly also includes a first roller 61 and a second roller 62, which are respectively sleeved on the outside of the first eccentric portion 12 and the second eccentric portion 13. Here, the first cylinder 20, the first roller 61, the second cylinder 30, the second roller 62 and the middle partition 40 enclose an oil inlet and oil storage chamber 80, and the second end of the partition inner hole 41 is connected to the oil inlet and oil storage chamber 80 by setting, and the oil inlet and oil storage chamber 80 is connected to the first oil passage, so that the oil inlet and oil storage chamber 80 are respectively connected to the first oil passage and the second oil passage, so that the first oil passage and the second oil passage are connected. Moreover, the oil in the oil pool 92 at the bottom of the compressor housing 91 guided from the first oil circuit can be stored in the oil induction storage chamber 80, and then transported to other moving parts of the pump body assembly through the second oil circuit, thereby ensuring reliable lubrication of the moving parts of the pump body assembly.

[0070] In some optional embodiments, the crankshaft 10 includes an axially arranged crankshaft inner hole 111 and a radially arranged crankshaft communication hole 112 arranged on the rod body 11. The first end of the crankshaft inner hole 111 is connected to the crankshaft communication hole 112 to form a first oil passage, and the second end is connected to the oil pool 92 at the bottom of the compressor housing 91, and the crankshaft communication hole 112 is connected to the oil inlet and oil storage chamber 80.

[0071] In this way, the crankshaft 10 includes an axially arranged crankshaft inner hole 111 and a radially arranged crankshaft connecting hole 112, as shown in FIG. Figure 6Here, the first end of the crankshaft inner hole 111 is connected to the crankshaft connecting hole 112 to form a first oil passage, and the second end is connected to the oil pool 92 at the bottom of the compressor housing 91, and the crankshaft connecting hole 112 is connected to the oil inlet and oil storage chamber 80, that is, the second oil passage is connected to the oil pool 92 at the bottom of the compressor housing 91, so that the oil at the bottom of the compressor housing 91 is guided to the oil inlet and oil storage chamber 80 through the first oil passage, and then transported to other moving parts of the pump assembly through the second oil passage.

[0072] In some optional embodiments, the pump assembly further includes an oil guide member 14. The oil guide member 14 is disposed in the crankshaft inner hole 111 and is used to guide the oil in the oil pool 92 at the bottom of the compressor housing 91 to the first oil passage.

[0073] The pump assembly for the compressor provided in the embodiment of the present disclosure further includes an oil guide member 14, which is disposed in the inner hole 111 of the crankshaft. Figure 1 The oil guide member 14 can more conveniently guide the oil in the oil pool 92 at the bottom of the compressor housing 91 to the first oil passage, then guide the oil to the oil guide storage chamber 80 through the first oil passage, and then transport the oil to other moving parts of the pump assembly through the second oil passage.

[0074] In some optional embodiments, the oil guide member 14 includes an oil guide plate. The oil guide plate is in a spiral structure and is arranged along the length direction of the crankshaft inner hole 111.

[0075] In some optional embodiments, the first end of the oil guide member 14 is located at the second end of the crankshaft inner hole 111 , and the second end is located at the crankshaft communicating hole 112 .

[0076] In this way, the first end of the oil guide member 14 is set at the second end of the crankshaft inner hole 111, and the second end is located at the crankshaft connecting hole 112, so that the oil guide member 14 can directly guide the oil in the oil pool 92 at the bottom of the compressor housing 91 to the crankshaft connecting hole 112, and then guide it to the oil induction storage chamber 80 through the crankshaft connecting hole 112, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 can be more easily guided to the oil induction storage chamber 80, and then transported to other moving parts of the pump body assembly through the second oil circuit.

[0077] The embodiment of the present disclosure further provides a compressor, which includes the above-mentioned pump body assembly for the compressor.

[0078] The embodiment of the present disclosure also provides a compressor, the compressor comprising the above-mentioned pump body assembly for the compressor, such as Figure 1The compressor further includes a compressor housing 91, an oil pool 92 is provided at the bottom of the compressor housing 91, the end of the crankshaft 10 of the pump body assembly extends to the oil pool 92 at the bottom of the compressor housing 91, and the oil in the oil pool 92 at the bottom of the compressor housing 91 is drained to the moving parts of the pump body assembly through the first oil passage provided on the crankshaft 10, thereby ensuring reliable lubrication of the moving parts of the pump body assembly.

[0079] It should be noted that during the operation of the compressor, the pressure inside the compressor housing 91 is the pressure applied to the oil pool 92 at the bottom of the compressor housing 91, which is greater than the pressure of the first air intake port 21 of the first cylinder 20 and the second air intake port 31 of the second cylinder 30. During the operation of the compressor, the oil flow path inside the pump assembly is as follows: Figure 7 As shown, Figure 7 The direction of the dotted arrow is the flow direction of the oil inside the pump assembly. During the rotation of the crankshaft 10, under the action of the oil guide 14, the oil in the oil pool 92 at the bottom of the compressor housing 91 is lifted up, and the lifted oil is transported to the crankshaft connecting hole 112 along the crankshaft inner hole 111, and then enters the oil induction storage chamber 80 through the crankshaft connecting hole 112. After that, it enters the partition inner hole 41 from the oil induction storage chamber 80, and then flows to the partition connecting hole 42 through the partition inner hole 41, and is divided by the partition connecting hole 42 to the first pressure reducing valve chamber and the second pressure reducing valve chamber. Here, after the oil guided here overcomes the elastic force of the first elastic part of the first pressure reducing valve 71 and the second elastic part of the second pressure reducing valve 72, the first sealing part of the first pressure reducing valve 71 and the second sealing part of the second pressure reducing valve 72 respectively connect the first throttling microchannel 51 and the second throttling microchannel 52 with the partition connecting hole 42, so that the oil enters the first pressure reducing valve cavity and the second pressure reducing valve cavity, and enters the first air intake port 21 and the second air intake port 31 from the first throttling microchannel 51 and the second throttling microchannel 52 respectively, and then flows to other moving parts of the pump body assembly, thereby ensuring the reliable lubrication of the moving parts of the pump body assembly and increasing the reliability of the compressor.

[0080] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A pump assembly for a compressor, characterized in that: include: A crankshaft, an end of which extends to the oil pool at the bottom of the compressor housing, and the crankshaft is provided with a first oil passage, the first oil passage being connected to the oil pool; A first cylinder is sleeved on the crankshaft, and the first cylinder is provided with a first intake port; A second cylinder is sleeved on the crankshaft, and the second cylinder is provided with a second intake port; The middle partition is sleeved on the crankshaft, the middle partition is arranged between the first cylinder and the second cylinder, the middle partition is provided with a second oil passage, and the first end of the second oil passage is connected to the first oil passage, and the second end is connected to the first air intake port and the second air intake port. Wherein, the second oil passage is provided with a pressure reducing device.

2. The pump assembly according to claim 1, characterized in that: Pressure relief devices include: a first pressure reducing valve, disposed at a connection point between the second end of the second oil passage and the first air intake port, and / or The second pressure reducing valve is arranged at the connection point between the second end of the second oil passage and the second air intake port.

3. The pump assembly according to claim 2, characterized in that: In the case where the pressure reducing device includes a first pressure reducing valve, the first cylinder is provided with a first pressure reducing groove and a first throttling micro-hole, and a first end of the first throttling micro-hole is connected to the first air intake port; The end surface of the middle partition plate in contact with the first cylinder is provided with a second pressure relief groove and a second throttling micro-hole connected to the second pressure relief groove. Among them, the second throttling microhole is connected to the second end of the first throttling microhole to form a first throttling microchannel, the second pressure reducing groove and the first pressure reducing groove constitute a first pressure reducing valve cavity, the first pressure reducing valve cavity is connected to the second oil channel, and the first pressure reducing valve is arranged in the first pressure reducing valve cavity.

4. The pump assembly according to claim 3, characterized in that: In the case where the pressure reducing device includes a second pressure reducing valve, the second cylinder is provided with a third pressure reducing groove and a third throttling micro-hole, and the first end of the third throttling micro-hole is connected to the second air intake port; The end surface of the middle partition plate in contact with the second cylinder is provided with a fourth pressure relief groove and a fourth throttling micro-hole connected to the fourth pressure relief groove. Among them, the fourth throttling microhole is connected to the second end of the third throttling microhole to form a second throttling microchannel, the fourth pressure reducing groove and the third pressure reducing groove constitute a second pressure reducing valve cavity, the second pressure reducing valve cavity is connected to the second oil channel, and the second pressure reducing valve is arranged in the second pressure reducing valve cavity.

5. The pump assembly according to claim 4, characterized in that: The middle partition includes a partition inner hole arranged radially and a partition connecting hole arranged axially. Among them, the first end of the inner hole of the partition is connected to the partition connecting hole to form a second oil passage, and the second end is connected to the first oil passage. In addition, the first end of the partition connecting hole is connected to the second pressure reducing groove, and the second end of the partition connecting hole is connected to the fourth pressure reducing groove.

6. The pump assembly according to claim 5, characterized in that: The crankshaft includes a rod body and a first eccentric portion and a second eccentric portion arranged on the rod body; The pump body assembly further includes a first roller and a second roller, wherein the first roller and the second roller are respectively sleeved on the outer sides of the first eccentric portion and the second eccentric portion. The first cylinder, the first roller, the second cylinder, the second roller and the middle partition form an oil inlet storage chamber, and the second end of the inner hole of the partition is connected to the oil inlet storage chamber, and the oil inlet storage chamber is connected to the first oil passage.

7. The pump assembly according to claim 6, characterized in that: The crankshaft includes an axially arranged crankshaft inner hole and a radially arranged crankshaft communicating hole arranged on the rod body. The first end of the crankshaft inner hole is connected to the crankshaft connecting hole to form a first oil passage, and the second end is connected to the oil pool at the bottom of the compressor housing, and the crankshaft connecting hole is connected to the oil inlet and oil storage chamber.

8. The pump assembly according to claim 7, characterized in that: Also includes: The oil guide member is arranged in the inner hole of the crankshaft and is used for guiding the oil in the oil pool at the bottom of the compressor housing to the first oil channel.

9. The pump assembly according to claim 8, characterized in that: The first end of the oil guide member is located at the second end of the crankshaft inner hole, and the second end is located at the crankshaft communicating hole.

10. A compressor, characterized in that: The invention comprises a pump body assembly for a compressor according to any one of claims 1 to 9.

Images