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, and the crankshaft is provided with a first oil way channel communicating with the oil pool. The first cylinder is provided with a first suction port. The second cylinder is provided with a second air suction port. The middle partition plate is arranged between the first air cylinder and the second air cylinder and provided with a second oil way channel. 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, and oil at the bottom of the compressor shell is stably drained to the first air suction port and the second air suction port under the action of the first throttling valve and the second throttling valve by utilizing the pressure difference in the compressor shell, so that the oil suction efficiency is improved. And then the oil flows to other moving parts of the pump body assembly, so that reliable lubrication of the moving parts is ensured, and the reliability of the compressor is enhanced. 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, and the reliable lubrication of the moving parts of the pump body assembly cannot be guaranteed, thereby 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 and a compressor for a compressor. The pump body assembly for the compressor includes a crankshaft, a first cylinder, a second cylinder and a middle partition. A first oil circuit channel connected to an oil pool at the bottom of a compressor housing is arranged on the crankshaft, and a second oil circuit channel is arranged on the middle partition, so that the first oil circuit channel is connected to 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, a first throttle valve is arranged at the connection between the second end of the second oil circuit channel and the first air intake port, and a second throttle valve is arranged at the connection between the second end of the second oil circuit channel and the second air intake port, so that the oil in the oil pool at the bottom of the compressor housing is stably guided to the first air intake port and the second air intake port, 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 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 an intermediate 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 intermediate partition is sleeved on the crankshaft, and the intermediate partition is arranged between the first cylinder and the second cylinder, and the intermediate 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, a first throttle valve is provided at the connection between the second end of the second oil passage and the first air intake port, and / or a second throttle valve is provided at the connection between the second end of the second oil passage and the second air intake port.

[0009] In some embodiments, when a first throttle valve is provided at the connection between the second end of the second oil circuit channel and the first air intake port, the first cylinder is provided with a first cylinder connecting hole, and the middle partition is provided with a partition connecting hole. The first end of the first cylinder connecting hole is connected to the first air intake port, and the second end is connected to the partition connecting hole. The partition connecting hole is connected to the first oil circuit channel, and the first cylinder connecting hole and the partition connecting hole form a first throttle valve cavity, and the first throttle valve is provided in the first throttle valve cavity.

[0010] In some embodiments, when a second throttle valve is provided at the connection between the second end of the second oil circuit channel and the second air intake port, the second cylinder is provided with a second cylinder connecting hole, the middle partition is provided with a partition connecting hole, the first end of the second cylinder connecting hole is connected to the second air intake port, the second end is connected to the partition connecting hole, the partition connecting hole is connected to the first oil circuit channel, and the second cylinder connecting hole and the partition connecting hole form a second throttle valve cavity, and the second throttle valve is provided in the second throttle valve cavity.

[0011] In some optional embodiments, the first cylinder connecting hole includes a first throttling section and a first connecting section, the first end of the first connecting section is connected to the first air intake port, the second end is connected to the first end of the first throttling section, and the second end of the first throttling section is connected to the partition connecting hole to form a first throttling valve cavity. The first throttling valve includes a first piston head and a first elastic member, the first piston head includes a first throttling part and a first guide part, the first guide part is provided with a first guide hole, the first end of the first guide hole is connected to the first end of the partition connecting hole, and the second end is connected to the first cylinder connecting hole. Wherein, the first throttling part is arranged in the first throttling section, the first guide part is partially arranged in the partition connecting hole, and the first guide hole is at least partially located outside the partition connecting hole, and the width of the first throttling section is greater than the width of the first throttling part.

[0012] In some optional embodiments, the second cylinder connecting hole includes a second throttling section and a second connecting section, the first end of the second connecting section is connected to the second air intake port, the second end is connected to the first end of the second throttling section, and the second end of the second throttling section is connected to the partition connecting hole to form a second throttling valve cavity. The second throttling valve includes a second piston head and a second elastic member, the second piston head includes a second throttling part and a second guide part, the second guide part is provided with a second guide hole, the first end of the second guide hole is connected to the first end of the partition connecting hole, and the second end is connected to the second cylinder connecting hole. The second throttling part is provided in the second throttling section, the second guide part is partially provided in the partition connecting hole, and the second guide hole is at least partially located outside the partition connecting hole, and the width of the second throttling section is greater than the width of the second throttling part.

[0013] In some optional embodiments, an absolute value of a difference between a width of the first throttling section and a width of the first throttling portion is greater than or equal to 10 μm and less than or equal to 200 μm.

[0014] In some optional embodiments, the middle partition is further provided with a partition inner hole, wherein the first end of the partition inner hole is connected to the partition connecting hole to form a second oil passage, the second end is connected to the first oil passage, the first end of the partition connecting hole is connected to the first air intake port, and the second end is connected to the second air intake port.

[0015] In some optional embodiments, the inner hole of the partition includes a pressure-stabilizing channel, a pressure reducing valve cavity and a pressure-inducing channel. The first end of the pressure-stabilizing channel is connected to the partition communication hole, and the second end is connected to the pressure reducing valve cavity. The first end of the pressure-inducing channel is connected to the pressure reducing valve cavity, and the second end is connected to the first oil channel. The pressure reducing valve is arranged in the pressure reducing valve cavity.

[0016] 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 chamber, and the second end of the pressure induction channel is connected to the oil induction and oil storage chamber, and the oil induction and oil storage chamber is connected to the first oil passage.

[0017] In some optional embodiments, the crankshaft includes a crankshaft inner hole and a crankshaft connecting hole provided in the rod body, wherein a first end of the crankshaft inner hole is connected to the crankshaft connecting hole to form a first oil passage, a second end is connected to an oil pool at the bottom of the compressor housing, and the crankshaft connecting hole is connected to the oil inlet and oil storage chamber.

[0018] In some optional embodiments, the pump body assembly further includes an oil guide member, which is disposed on 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.

[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 channel, 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 channel. 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 two end faces of the middle partition are respectively connected to the first cylinder and the second cylinder. The middle partition is provided with a second oil channel, and the first end of the second oil channel is connected to the first oil channel, and the second end is connected to the first air intake port and the second air intake port. In this way, the first oil path channel, the second oil path channel, the first air inlet and the second air inlet are connected to form an internal oil path circulation channel of the pump body assembly, and the oil in the oil pool at the bottom of the compressor housing is drained to the first air inlet and the second air inlet by utilizing the pressure difference inside the compressor housing. Furthermore, by providing a first throttle valve at the connection point between the second end of the second oil path channel and the first air inlet, and providing a second throttle valve at the connection point between the second end of the second oil path channel and the second air inlet, the oil in the oil pool at the bottom of the compressor housing can be stably drained to the first air inlet and the second air inlet, and then flow to other moving parts of the pump body assembly, thereby ensuring the 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 region, in which the pressure reducing valve is in the first state;

[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 Yes Yes Figure 2 A partial enlarged schematic diagram of the middle Y region;

[0030] Figure 7 yes Figure 1 Another partial enlarged schematic diagram of the middle X area, in which the pressure reducing valve is in the second state;

[0031] Figure 8 is a schematic structural diagram of a crankshaft in a pump assembly for a compressor provided by an embodiment of the present disclosure;

[0032] Fig. 9 It is a schematic structural diagram of a first piston head of a first throttle valve in a pump body assembly for a compressor provided in an embodiment of the present disclosure.

[0033] Reference numerals:

[0034] 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;

[0035] 20: first cylinder; 21: first air intake port; 22: first cylinder communication hole; 221: first throttling section; 222: first communication section;

[0036] 30: second cylinder; 31: second air intake port; 32: second cylinder communication hole; 321: second throttling section; 322: second communication section;

[0037] 40: middle partition; 411: pressure stabilizing channel; 412: pressure reducing valve chamber; 413: pressure guiding channel; 42: partition communicating hole;

[0038] 51: first throttle valve; 511: first piston head; 5111: first throttle portion; 5112: first flow guide portion; 51121: first flow guide hole; 512: first elastic member;

[0039] 52: second throttle valve; 521: second piston head; 5211: second throttle portion; 5212: second flow guide portion; 52121: second flow guide hole; 522: second elastic member;

[0040] 61: first roller; 62: second roller;

[0041] 70: pressure reducing valve; 71: blocking member; 72: third elastic member;

[0042] 80: oil inlet and oil storage chamber;

[0043] 91: compressor housing; 92: oil pool. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Unless otherwise stated, the term "plurality" means two or more.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] At present, during the operation of the compressor, the moving parts of the pump body 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 a low suction volume or low temperature, the oil inside the compressor has a low solubility in the refrigerant, and the suction oil volume is sharply reduced, which easily leads to the lack of oil lubrication and wear of the rollers and vanes, affecting the reliability of the compressor. In the related art, 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, and 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. In the related art, an external circulation flow path of oil is added to the outside of the compressor. 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, and the reliable lubrication of the moving parts of the pump body assembly cannot be guaranteed, thereby affecting the reliability of the compressor.

[0053] 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 circuit channel connected to an oil pool 92 at the bottom of a compressor housing 91 is provided on the crankshaft 10, and a second oil circuit channel is provided on the middle partition 40, so that the first oil circuit channel is connected to the second oil circuit channel to form an internal oil circuit circulation channel of the pump body assembly, and utilizing the pressure difference inside the compressor housing 91, a first throttle valve 51 is provided at the connection between the second end of the second oil circuit channel and the first air intake port 21, and a second throttle valve 52 is provided at the connection between the second end of the second oil circuit channel and the second air intake port 31, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 is stably diverted 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 the reliable lubrication of the moving parts of the pump body assembly and enhancing the reliability of the compressor.

[0054] Combination Figures 1 to 8As shown, a pump body assembly for a compressor provided by an 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, 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. A first throttle valve 51 is provided at the connection between the second end of the second oil passage and the first air intake port 21 , and / or a second throttle valve 52 is provided at the connection between the second end of the second oil passage and the second air intake port 31 .

[0055] 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 provided between the first cylinder 20 and the second cylinder 30, and the two end faces of the middle partition 40 are respectively connected to the first cylinder 20 and the second cylinder 30. The middle partition plate 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 inlet 21 and the second air inlet 31. In this way, the first oil passage, the second oil passage, the first air inlet 21 and the second air inlet 31 are connected to form an internal oil circulation passage of the pump body assembly, and the oil in the oil pool 92 at the bottom of the compressor housing 91 is drained to the first air inlet 21 and the second air inlet 31 by using the pressure difference inside the compressor housing 91. Further, by providing a first throttle valve 51 at the connection between the second end of the second oil passage and the first air inlet 21, and providing a second throttle valve 52 at the connection between the second end of the second oil passage and the second air inlet 31, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the first air inlet 21 and the second air inlet 31, and then flow to other moving parts of the pump body assembly, thereby ensuring the reliable lubrication of the moving parts of the pump body assembly and enhancing the reliability of the compressor.

[0056] In some optional embodiments, a first throttle valve 51 is provided at the connection point between the second end of the second oil passage and the first air intake port 21 .

[0057] In this way, the first throttle valve 51 is set at the connection between the second end of the second oil circuit channel 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 throttle valve 51, 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.

[0058] In some optional embodiments, a second throttle valve 52 is provided at the connection point between the second end of the second oil passage and the second air intake port 31 .

[0059] In this way, the second throttle valve 52 is arranged at the connection between the second end of the second oil circuit channel 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 throttle valve 52, 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.

[0060] In some optional embodiments, a first throttle valve 51 is provided at the connection between the second end of the second oil passage and the first air intake port 21 , and a second throttle valve 52 is provided at the connection between the second end of the second oil passage and the second air intake port 31 .

[0061] In this way, the first throttle valve 51 and the second throttle valve 52 are respectively arranged at the connection point between the second end of the second oil circuit and the first air intake port 21 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. 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 throttle valve 51 and the second throttle valve 52, 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.

[0062] In some optional embodiments, when a first throttle valve 51 is provided at the connection between the second end of the second oil circuit channel and the first air intake port 21, the first cylinder 20 is provided with a first cylinder connecting hole 22, and the middle partition 40 is provided with a partition connecting hole 42. The first end of the first cylinder connecting hole 22 is connected to the first air intake port 21, and the second end is connected to the partition connecting hole 42. The partition connecting hole 42 is connected to the first oil circuit channel, and the first cylinder connecting hole 22 and the partition connecting hole 42 form a first throttle valve cavity, and the first throttle valve 51 is provided in the first throttle valve cavity.

[0063] Combination Figure 3 and Figure 5 As shown, in the case where the first throttle valve 51 is provided at the connection point 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 cylinder connecting hole 22, and the middle partition 40 is provided with a partition connecting hole 42. By making the first end of the first cylinder connecting hole 22 connected to the first air intake port 21, the second end connected to the first end of the partition connecting hole 42, and the partition connecting hole 42 connected to the first oil passage, the first cylinder connecting hole 22 and the partition connecting hole 42 are connected to the first oil passage, 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 first oil passage and the partition connecting hole 42. Furthermore, the first cylinder connecting hole 22 and the first end of the partition connecting hole 42 form a first throttle valve cavity, and the first throttle valve 51 is arranged in the first throttle valve cavity, so that under the action of the first throttle valve 51, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the first intake port 21 through the first oil passage and the partition connecting hole 42.

[0064] In some optional embodiments, when a second throttle valve 52 is provided at the connection between the second end of the second oil circuit channel and the second air intake port 31, the second cylinder 30 is provided with a second cylinder connecting hole 32, and the middle partition 40 is provided with a partition connecting hole 42. The first end of the second cylinder connecting hole 32 is connected to the second air intake port 31, and the second end is connected to the partition connecting hole 42. The partition connecting hole 42 is connected to the first oil circuit channel, and the second cylinder connecting hole 32 and the partition connecting hole 42 form a second throttle valve cavity, and the second throttle valve 52 is provided in the second throttle valve cavity.

[0065] Combination Figure 4 and Figure 5As shown, in the case where the second throttle valve 52 is provided at the connection point between the second end of the second oil passage and the second air intake port 31, the second cylinder 30 is provided with a second cylinder connecting hole 32, and the middle partition 40 is provided with a partition connecting hole 42. By making the first end of the second cylinder connecting hole 32 connected to the second air intake port 31, the second end connected to the second end of the partition connecting hole 42, and the partition connecting hole 42 connected to the first oil passage, the second cylinder connecting hole 32 and the partition connecting hole 42 are connected to the first oil passage, 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 first oil passage and the partition connecting hole 42. Furthermore, the second cylinder connecting hole and the second end of the partition connecting hole 42 form a second throttle valve cavity, and the second throttle valve 52 is arranged in the second throttle valve cavity, so that under the action of the second throttle valve 52, the oil in the oil pool 92 at the bottom of the compressor housing 91 can be stably drained to the second intake port 31 through the first oil passage and the partition connecting hole 42.

[0066] In some optional embodiments, the first cylinder connecting hole 22 includes a first throttling section 221 and a first connecting section 222, the first end of the first connecting section 222 is connected to the first air inlet 21, the second end is connected to the first end of the first throttling section 221, and the second end of the first throttling section 221 is connected to the partition connecting hole 42 to form a first throttle valve cavity. The first throttle valve 51 includes a first piston head 511 and a first elastic member 512, the first piston head 511 includes a first throttling portion 5111 and a first guide portion 5112, the first guide portion 5112 is provided with a first guide hole 51121, the first end of the first guide hole 51121 is connected to the partition connecting hole 42, and the second end is connected to the first cylinder connecting hole 22. Among them, the first throttling part 5111 is arranged in the first throttling section 221, the first guide part 5112 is partially arranged in the partition connecting hole 42, and the first guide hole 51121 is at least partially located outside the partition connecting hole 42, and the width of the first throttling section 221 is greater than the width of the first throttling part 5111.

[0067] Combination Figure 2 , Figure 6 and Fig. 9 As shown, the first cylinder connecting hole 22 includes a first throttling section 221 and a first connecting section 222. The first end of the first connecting section 222 is connected to the first air inlet 21, and the second end is connected to the first end of the first throttling section 221. The second end of the first throttling section 221 is connected to the first end of the partition connecting hole 42 to form a first throttling valve cavity. The first throttling valve 51 includes a first piston head 511 and a first elastic member 512. The first elastic member 512 is arranged on the first piston head 511. The first piston head 511 includes a first throttling portion 5111 and a first guide portion 5112, as shown in FIG. Fig. 9As shown, the first guide part 5112 is provided with a first guide hole 51121, and the first guide hole 51121 is provided inside the first guide part 5112. The first end of the first guide hole 51121 is connected to the partition connecting hole 42, and the second end is connected to the first cylinder connecting hole 22, so that the first cylinder connecting hole 22 is connected to the partition connecting hole 42 through the first guide hole 51121. The first throttle part 5111 is provided in the first throttle section 221, and the first guide part 5112 is partially provided in the partition connecting hole 42, so that the first throttle valve 51 can be stably installed in the first throttle valve cavity. The first guide hole 51121 is at least partially located outside the partition connecting hole 42, so that the first guide hole 51121 can be connected to the partition connecting hole 42 and the first cylinder connecting hole 22. Furthermore, the width of the first throttling section 221 is set to be larger than the width of the first throttling portion 5111, so as to ensure that the oil drained from the partition connecting hole 42 can pass through the annular gap between the first throttling portion 5111 and the first throttling section 221. Under the throttling action of the annular gap, that is, under the action of the first throttle valve 51 and the first cylinder connecting hole 22, the oil in the oil pool 92 at the bottom of the compressor housing 91 drained from the first oil circuit channel can flow steadily into the first suction port 21, and then flow to other moving parts of the pump body assembly.

[0068] In some optional embodiments, the first guide hole 51121 is in a T-shaped structure, and the transverse guide hole of the first guide hole 51121 of the T-shaped structure is connected to the throttling section and the longitudinal guide hole of the first cylinder connecting hole 22, and the longitudinal guide hole is connected to the partition connecting hole 42. The structure of the first guide hole 51121 is not limited here, and the first guide hole 51121 can be a T-shaped structure or a Y-shaped structure.

[0069] For ease of understanding, the surface pressure of the oil in the oil pool 92 at the bottom of the compressor housing 91 is Pv, and the pressure of the oil drained to the partition connecting hole 42 is Pw. When the suction pressure of the first suction port 21 is Ps1, according to the annular gap throttling calculation formula, the flow rate of the oil flowing into the first suction port 21 satisfies the following formula:

[0070]

[0071] Among them, Q1 is the flow rate of oil flowing into the first intake port 21; η is the viscosity of the oil; L1 is the throttling length of the annular gap between the first throttling portion 5111 of the first piston head 511 of the first throttle valve 51 and the first throttling section 221 of the first cylinder connecting hole 22; d1 is the width of the first throttling portion 5111 of the first piston head 511 of the first throttle valve 51; d2 is the width of the first throttling section 221 of the first cylinder connecting hole 22.

[0072] In some optional embodiments, the absolute value of the difference between the width of the first throttling section 221 and the width of the first throttling portion 5111 is greater than or equal to 10 μm and less than or equal to 200 μm.

[0073] In this configuration, the width of the annular gap formed between the first throttle portion 5111 and the first throttle section 221 is half of the absolute value of the difference between the width of the first throttle section 221 and the width of the first throttle portion 5111, that is, the value range of the width of the annular gap formed between the first throttle portion 5111 and the first throttle section 221 is greater than or equal to 5μm and less than or equal to 100μm. In this way, the width of the annular gap formed between the first throttle portion 5111 and the first throttle section 221 can make the first throttle valve 51 have a good throttling effect, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 can be better guided to the first air intake port 21 of the first cylinder 20. Exemplarily, the width of the annular gap formed between the first throttling portion 5111 and the first throttling section 221 may be 5 μm, 15 μm, 25 μm, 35 μm, 45 μm, 55 μm, 65 μm, 75 μm, 85 μm, 95 μm, or 100 μm.

[0074] It should be noted that, during the operation of the compressor, the suction pressure Ps1 of the first suction port 21 of the first cylinder 20 changes with the change of the compressor operating conditions. Under the throttling and decompression effect of the first throttle valve 51, the pressure of the oil flowing through the first throttle valve 51 is balanced with the pressure of the first suction port 21, so that the oil can flow into the first suction port 21, that is, the pressure of the oil flowing before and after the first throttle valve 51 satisfies the following formula:

[0075]

[0076] Wherein, L2 is the pre-tightening compression amount of the first elastic member 512 ; K1 is the elastic coefficient of the first elastic member 512 .

[0077] Here, during the operation of the compressor, the suction pressure Ps1 of the first suction port 21 of the first cylinder 20 changes with the change of the operating conditions of the compressor. When the suction pressure Ps of the first suction port 21 increases with the operating conditions of the compressor, under the action of the first throttle valve 51, the first elastic member 512 of the first throttle valve 51 will push the first piston head 511 to move toward the direction of the partition connecting hole 42, thereby reducing the pre-tightening compression amount L2 of the first elastic member 512, and at the same time reducing the throttling length L1 of the annular gap, thereby reducing the flow resistance of the oil, and making the pressure of the oil after throttling by the first throttle valve 51 balanced with the suction pressure Ps1 of the first suction port 21, so that the oil can flow into the first suction port 21. When the suction pressure Ps1 of the first suction port 21 decreases with the operating condition of the compressor, under the action of the first throttle valve 51, the oil flowing through the first throttle valve 51 will push the first piston head 511 to move toward the first suction port 21, thereby increasing the pre-tightening compression amount L2 of the first elastic member 512, and at the same time increasing the throttling length L1 of the annular gap, thereby increasing the flow resistance of the oil, so that the pressure of the oil after throttling by the first throttle valve 51 is balanced with the suction pressure Ps1 of the first suction port 21, so that the oil can flow into the first suction port 21.

[0078] In some optional embodiments, the second cylinder connecting hole 32 includes a second throttling section 321 and a second connecting section 322, the first end of the second connecting section 322 is connected to the second air intake port 31, the second end is connected to the first end of the second throttling section 321, and the second end of the second throttling section 321 is connected to the partition connecting hole 42 to form a second throttle valve cavity. The second throttle valve 52 includes a second piston head 521 and a second elastic member 522, the second piston head 521 includes a second throttling portion 5211 and a second guide portion 5212, the second guide portion 5212 is provided with a second guide hole 52121, the first end of the second guide hole 52121 is connected to the first end of the partition connecting hole 42, and the second end is connected to the second cylinder connecting hole 32. Among them, the second throttling portion 5211 is arranged in the second throttling section 321, the second guide portion 5212 is partially arranged at the second end of the partition connecting hole 42, and the second guide hole 52121 is at least partially located outside the second end of the partition connecting hole 42, and the width of the second throttling section 321 is greater than the width of the second throttling portion 5211.

[0079] In this way, the second cylinder connecting hole 32 includes a second throttling section 321 and a second connecting section 322. The first end of the second connecting section 322 is connected to the second air intake port 31, and the second end is connected to the first end of the second throttling section 321. The second end of the second throttling section 321 is connected to the second end of the partition connecting hole 42 to form a second throttle valve cavity. The second throttle valve 52 includes a second piston head 521 and a second elastic member 522. The second elastic member 522 is arranged on the second piston head 521. The second piston head 521 includes a second throttling portion 5211 and a second guide portion 5212. The second guide portion 5212 is provided with a second guide hole 52121. The second guide hole 52121 is arranged inside the second guide portion 5212. The first end of the second guide hole 52121 is connected to the partition connecting hole 42, and the second end is connected to the second cylinder connecting hole 32, so that the second cylinder connecting hole 32 is connected to the partition connecting hole 42 through the second guide hole 52121. The second throttle portion 5211 is arranged in the second throttle section 321, and the second guide portion 5212 is partially arranged in the partition connecting hole 42, so that the second throttle valve 52 can be stably installed in the second throttle valve cavity. The second guide hole 52121 is at least partially located outside the partition connecting hole 42, so that the second guide hole 52121 can be connected to the partition connecting hole 42 and the second cylinder connecting hole 32. Furthermore, the width of the second throttling section 321 is set to be larger than the width of the second throttling portion 5211, so as to ensure that the oil drained from the partition connecting hole 42 can pass through the annular gap between the second throttling portion 5211 and the second throttling section 321. Under the throttling action of the annular gap, that is, under the action of the second throttle valve 52 and the second cylinder connecting hole 32, the oil in the oil pool 92 at the bottom of the compressor housing 91 drained from the second oil circuit channel can flow steadily into the second intake port 31, and then flow to other moving parts of the pump body assembly.

[0080] In some optional embodiments, the second guide hole 52121 is in a T-shaped structure, and the transverse guide hole of the second guide hole 52121 of the T-shaped structure is connected to the throttling section and the longitudinal guide hole of the second cylinder connecting hole 32, and the longitudinal guide hole is connected to the partition connecting hole 42. The structure of the second guide hole 52121 is not limited here, and the second guide hole 52121 can be a T-shaped structure or a Y-shaped structure.

[0081] When the suction pressure of the second suction port is Ps2, according to the annular gap throttling calculation formula, the flow rate of oil flowing into the second suction port 31 satisfies the following formula:

[0082]

[0083] Among them, Q2 is the flow rate of oil flowing into the second intake port 31; η is the viscosity of the oil; L3 is the throttling length of the annular gap between the second throttling portion 5211 of the second piston head 521 of the second throttle valve 52 and the second throttling section 321 of the second cylinder connecting hole 32; d3 is the width of the second throttling portion 5211 of the second piston head 521 of the second throttle valve 52; d4 is the width of the second throttling section 321 of the second cylinder connecting hole 32.

[0084] In some optional embodiments, the absolute value of the difference between the width of the second throttling section 321 and the width of the second throttling portion 5211 is greater than or equal to 10 μm and less than or equal to 200 μm.

[0085] In this configuration, the width of the annular gap formed between the second throttle portion 5211 and the second throttle section 321 is half of the absolute value of the difference between the width of the second throttle section 321 and the width of the second throttle portion 5211, that is, the value range of the width of the annular gap formed between the second throttle portion 5211 and the second throttle section 321 is greater than or equal to 5μm and less than or equal to 100μm. In this way, the width of the annular gap formed between the second throttle portion 5211 and the second throttle section 321 can make the second throttle valve 52 have a good throttling effect, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 can be better guided to the second air intake port 31 of the second cylinder 30. Exemplarily, the width of the annular gap formed between the second throttling portion 5211 and the second throttling section 321 may be 5 μm, 15 μm, 25 μm, 35 μm, 45 μm, 55 μm, 65 μm, 75 μm, 85 μm, 95 μm, or 100 μm.

[0086] It should be noted that, during the operation of the compressor, the suction pressure Ps2 of the second suction port 31 of the second cylinder 30 changes with the change of the compressor operating conditions. Under the throttling and decompression effect of the second throttle valve 52, the pressure of the oil flowing through the second throttle valve 52 is balanced with the pressure of the second suction port 31, so that the oil can flow into the second suction port 31, that is, the pressure of the oil flowing before and after the second throttle valve 52 satisfies the following formula:

[0087]

[0088] Wherein, L4 is the pre-tightening compression amount of the second elastic member 512 ; K2 is the elastic coefficient of the second elastic member 512 .

[0089] Here, during the operation of the compressor, the suction pressure Ps2 of the second suction port 31 of the second cylinder 30 changes with the change of the operating conditions of the compressor. When the suction pressure Ps of the second suction port 31 increases with the operating conditions of the compressor, under the action of the second throttle valve 52, the second elastic member 522 of the second throttle valve 52 will push the second piston head 521 to move toward the direction of the partition connecting hole 42, thereby reducing the pre-tightening compression amount L4 of the second elastic member 522, and at the same time reducing the throttling length L3 of the annular gap, thereby reducing the flow resistance of the oil, and making the pressure of the oil after throttling by the second throttle valve 52 remain balanced with the suction pressure Ps2 of the second suction port 31, so that the oil can flow into the second suction port 31. When the suction pressure Ps2 of the second suction port 31 decreases with the operating condition of the compressor, under the action of the second throttle valve 52, the oil flowing through the second throttle valve 52 will push the second piston head 521 to move in the direction of the second suction port 31, thereby increasing the pre-tightening compression amount L4 of the second elastic member 522, and at the same time increasing the throttling length L3 of the annular gap, thereby increasing the flow resistance of the oil, so that the pressure of the oil after throttling by the second throttle valve 52 is balanced with the suction pressure Ps2 of the second suction port 31, so that the oil can flow into the second suction port 31.

[0090] It should be noted that the structures of the first throttle valve 51 and the second throttle valve 52 may be the same or different, and the first cylinder connecting hole 22 and the second cylinder connecting hole 32 are respectively adapted to the first throttle valve 51 and the second throttle valve 52 .

[0091] In some optional embodiments, the middle partition 40 is further provided with a partition inner hole, wherein the first end of the partition inner hole is connected to the partition connecting hole 42 to form a second oil passage, and the second end is connected to the first oil passage, the first end of the partition connecting hole 42 is connected to the first air intake port 21, and the second end is connected to the second air intake port 31.

[0092] In this way, by setting a partition inner hole in the middle partition 40, the first end of the partition inner hole is connected to the partition connecting hole 42 to form a second oil circuit channel, and the second end is connected to the first oil circuit channel. The first end of the partition connecting hole 42 is connected to the first air intake port 21, and the second end is connected to the second air intake port 31, so that the first oil circuit channel and the second oil circuit channel are connected to the first air intake port 21 and the second air intake port 31, and 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 the reliable lubrication of the moving parts of the pump body assembly and enhancing the reliability of the compressor.

[0093] In some optional embodiments, the inner hole of the partition includes a pressure-stabilizing channel 411, a pressure-reducing valve cavity 412, and a pressure-inducing channel 413. The first end of the pressure-stabilizing channel 411 is connected to the partition communication hole 42, and the second end is connected to the pressure-reducing valve cavity 412. The first end of the pressure-inducing channel 413 is connected to the pressure-reducing valve cavity 412, and the second end is connected to the first oil channel. In addition, the pressure-reducing valve 70 is disposed in the pressure-reducing valve cavity 412.

[0094] Combination Figure 2 and Figure 7 As shown, the inner hole of the partition includes a pressure-stabilizing channel 411, a pressure-reducing valve cavity 412 and a pressure-inducing channel 413, and the first end of the pressure-stabilizing channel 411 is connected to the partition connecting hole 42, and the second end is connected to the pressure-reducing valve cavity 412, the first end of the pressure-inducing channel 413 is connected to the pressure-reducing valve cavity 412, and the second end is connected to the first oil channel, so that the partition connecting hole 42 is connected to the pressure-stabilizing channel 411, the pressure-reducing valve cavity 412 and the pressure-inducing channel 413 to form a second oil channel, so that the oil in the oil pool 92 at the bottom of the compressor housing 91 guided by the first oil channel enters the pressure-reducing valve cavity 412 from the pressure-inducing channel 413, and then enters the pressure-stabilizing channel 411 through the pressure-reducing valve cavity 412, and then flows from the pressure-stabilizing channel 411 through the partition connecting hole 42, and is diverted by the partition connecting hole 42 to flow to the first air intake port 21 and the second air intake port 31. Furthermore, a pressure reducing valve 70 is provided in the pressure reducing valve chamber 412, so that the oil drawn from the first oil circuit channel has its pressure reduced for the first time under the action of the pressure reducing valve 70, and then enters the pressure stabilizing channel 411 from the pressure reducing valve chamber 412, so that the pressure of the oil entering the partition connecting hole 42 can be more stable.

[0095] In some optional embodiments, the pressure reducing valve 70 includes a blocking member 71 and a third elastic member 72. The blocking member 71 can connect or block the pressure-inducing channel 413 with the pressure reducing valve chamber 412 under the action of the third elastic member 72.

[0096] It should be noted that, during the operation of the compressor, the surface pressure of the oil in the oil pool 92 at the bottom of the compressor housing 91 is Pv, that is, the pressure of the oil in the pressure-inducing channel 413 that is drained by the first oil path is Pv. Under the pressure-reducing effect of the pressure-reducing valve 70, the pressure of the oil drained to the partition connecting hole 42 is reduced to Pw. That is, the pressure of the oil in the pressure-inducing channel 413 is Pv, which is greater than the preload force of the third elastic member 72 of the pressure-reducing valve 70. The pressure of the oil pushes the sealing member 71 of the pressure-reducing valve 70 away from the end of the pressure-inducing channel 413 that is connected to the pressure-reducing valve cavity 412, so that the pressure-inducing channel 413 is connected to the pressure-reducing valve cavity 412. At this time, the third elastic member 72 interacts with the oil to reach a balanced state, that is, the pressure-reducing valve 70 is Figure 2 The first state shown is transformed into Figure 7The second state is shown, thereby reducing the pressure of the oil guided to the partition plate communication hole 42 to Pw.

[0097] Furthermore, during the operation of the compressor, the surface pressure Pv of the oil in the oil pool 92 at the bottom of the compressor housing 91 also changes with the change of the working conditions. When the surface pressure Pv of the oil increases, under the action of the pressure reducing valve 70, the pressure of the oil pushes the blocking member 71 to a distance away from the end of the pressure-inducing channel 413 connected to the pressure reducing valve cavity 412, and the preload force of the third elastic member 72 increases. When the surface pressure Pv of the oil decreases, under the action of the pressure reducing valve 70, the pressure of the oil pushes the blocking member 71 to a distance away from the end of the pressure-inducing channel 413 connected to the pressure reducing valve cavity 412, and the preload force of the third elastic member 72 decreases. That is, under the first pressure reducing action of the pressure reducing valve 70, the pressure of the oil drained to the partition connecting hole 42 is reduced to Pw, so that the pressure of the oil entering the partition connecting hole 42 can be more stable.

[0098] 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 pressure inlet channel 413 is connected to the oil inlet storage chamber 80, and the oil inlet storage chamber 80 is connected to the first oil passage.

[0099] Combination Figure 1 and 8 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 pressure inlet channel 413 of the inner hole of the partition 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 guide 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.

[0100] In some optional embodiments, the crankshaft 10 includes a crankshaft inner hole 111 and a crankshaft communicating hole 112 disposed on the rod body 11. The first end of the crankshaft inner hole 111 is connected to the crankshaft communicating 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 communicating hole 112 is connected to the oil inlet and oil storage chamber 80.

[0101] 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 8 Here, 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.

[0102] In some optional embodiments, the pump assembly further includes an oil guide member 14. The oil guide member 14 is disposed on the crankshaft 10 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.

[0103] The pump assembly for the compressor provided in the embodiment of the present disclosure further includes an oil guide member 14, which is disposed on the crankshaft 10. Figure 1 As shown, the oil guide is arranged in the crankshaft inner hole 111, and 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 channel, and then guide the oil to the oil induction storage chamber 80 through the first oil channel, and then transport it to other moving parts of the pump body assembly through the second oil channel.

[0104] 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.

[0105] 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 .

[0106] 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.

[0107] The embodiment of the present disclosure further provides a compressor, which includes the above-mentioned pump body assembly for the compressor.

[0108] It should be noted that during the operation of the compressor, the pressure inside the compressor housing 91, that is, the pressure of the oil pool 92 applied to the bottom of the compressor housing 91, 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 inside the pump assembly is diverted to the first air intake port 21 and the second air intake port 31 through the partition connecting hole 42 of the first oil passage and the second oil passage. The oil inside the pump assembly flows to the first air intake port 21 through the partition connecting hole 42 under the decompression throttling action of the first throttle valve 51, as shown in FIG. Figure 6 As shown, Figure 6 The direction of the dotted arrow is the flow direction of the oil through the annular gap. 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 pressure induction channel 413 of the partition inner hole from the oil induction storage chamber 80. Under the first pressure reduction action of the pressure reducing valve 70, after overcoming the preload elastic force of the third elastic member 72, the pressure induction channel 413 is connected with the pressure reducing valve cavity 412, so that the pressure of the oil entering the pressure stabilizing channel 411 through the pressure reducing valve cavity 412 is reduced to Pw. Then it flows to the partition connecting hole 42 through the pressure stabilizing channel 411, and is diverted by the partition connecting hole 42 to the first cylinder connecting hole 22 and the second cylinder connecting hole 32. Under the action of the first throttle valve 51 and the second throttle, the oil will enter the annular gap formed between the first throttle part 5111 and the first throttle section 221 and the annular gap formed between the second throttle part 5211 and the second throttle section 321 respectively through the first guide hole 51121 and the second guide hole 52121 for throttling and pressure reduction, and finally enter the first air intake port 21 and the second air intake port 31 from the first connecting section 222 of the through hole of the first cylinder 20 and the second connecting section 322 of the through hole of the second cylinder 30 respectively, and then flow 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.

[0109] 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. A first throttle valve is provided at the connection point between the second end of the second oil passage and the first air intake port, and / or a second throttle valve is provided at the connection point between the second end of the second oil passage and the second air intake port.

2. The assembly according to claim 1, characterized in that When a first throttle valve is provided at the connection between the second end of the second oil circuit channel and the first air intake port, the first cylinder is provided with a first cylinder connecting hole, and the middle partition is provided with a partition connecting hole. The first end of the first cylinder connecting hole is connected to the first air intake port, and the second end is connected to the partition connecting hole. The partition connecting hole is connected to the first oil circuit channel, and the first cylinder connecting hole and the partition connecting hole form a first throttle valve cavity. The first throttle valve is provided in the first throttle valve cavity.

3. The assembly according to claim 1, characterized in that When a second throttle valve is provided at the connection between the second end of the second oil circuit channel and the second air intake port, the second cylinder is provided with a second cylinder connecting hole, the middle partition is provided with a partition connecting hole, the first end of the second cylinder connecting hole is connected to the second air intake port, the second end is connected to the partition connecting hole, the partition connecting hole is connected to the first oil circuit channel, and the second cylinder connecting hole and the partition connecting hole form a second throttle valve cavity, and the second throttle valve is provided in the second throttle valve cavity.

4. The pump assembly according to claim 2, characterized in that: The first cylinder communication hole comprises a first throttling section and a first communication section, the first end of the first communication section is connected to the first air intake port, the second end is connected to the first end of the first throttling section, and the second end of the first throttling section is connected to the partition communication hole to form a first throttling valve cavity; The first throttle valve includes a first piston head and a first elastic member. The first piston head includes a first throttle portion and a first guide portion. The first guide portion is provided with a first guide hole. The first end of the first guide hole is connected to the first end of the partition connecting hole, and the second end is connected to the first cylinder connecting hole. Among them, the first throttling part is arranged in the first throttling section, the first guide part is partially arranged in the partition connecting hole, and the first guide hole is at least partially located outside the partition connecting hole, and the width of the first throttling section is greater than the width of the first throttling part.

5. The pump assembly according to claim 4, characterized in that: The middle partition is also provided with a partition inner hole, the first end of the partition inner hole is connected to the partition connecting hole to form a second oil passage, the second end is connected to the first oil passage, the first end of the partition connecting hole is connected to the first air intake port, and the second end is connected to the second air intake port.

6. The pump assembly according to claim 5, characterized in that: The inner hole of the partition includes a pressure stabilizing channel, a pressure reducing valve cavity and a pressure inducing channel. Among them, the first end of the pressure stabilizing channel is connected to the partition connecting hole, and the second end is connected to the pressure reducing valve cavity. The first end of the pressure-inducing channel is connected to the pressure reducing valve cavity, and the second end is connected to the first oil channel, and the pressure reducing valve is arranged in the pressure reducing valve cavity.

7. The pump assembly according to claim 6, 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. Among them, 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 pressure inlet channel is connected to the oil inlet storage chamber, and the oil inlet storage chamber is connected to the first oil channel.

8. The pump assembly according to claim 7, characterized in that: The crankshaft includes a crankshaft inner hole and a crankshaft communicating hole arranged in 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.

9. The pump assembly according to any one of claims 1 to 8, characterized in that: Also includes: The oil guide member is arranged on the crankshaft and is used for guiding the oil in the oil pool at the bottom of the compressor housing to the first oil passage.

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.

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