Compressor assembly with liquid separator and air conditioner

Abstract

The utility model provides a compressor assembly and air conditioner with dispenser, compressor assembly includes: compressor casing, dispenser and pump body subassembly, dispenser is provided on the peripheral wall of compressor casing, pump body subassembly is provided in the compressor casing, and the pump body subassembly is provided with the compressor casing. And the height of the bottom of the liquid separator is higher than that of the upper end of the pump body assembly. According to the compressor, the pump body assembly can be prevented from being influenced by a low-temperature refrigerant in the liquid separator, the pump body assembly and even lubricating oil in an oil pool at the bottom of the compressor shell are prevented from being cooled by the low-temperature refrigerant, and the situation that the pump body assembly cannot meet the required lubricating condition due to the fact that the lubricating oil is cooled to generate supercooling is avoided; the lubrication performance of the pump body assembly is prevented from being reduced, and normal air suction and normal and reliable operation of the compressor are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly relates to a compressor assembly and an air conditioner with a liquid distributor. Background Art

[0002] Rotary compressors are widely used in refrigeration systems such as air conditioners, heat pumps, and refrigeration and cold storage. The liquid distributor on the compressor is one of the essential components of the rotary compressor, which plays the roles of stabilizing pressure, separating oil, separating liquid, and filtering. In the conventional design of the compressor, the liquid distributor is located on one side of the compressor, which not only increases the overall radial size of the compressor but also causes a series of problems such as the up-and-down swing of the liquid distributor and excessive refrigerant pneumatic noise. For a long time, this has been a difficult problem that scientific research scholars urgently need to solve. Most existing patents place the liquid distributor above, below, or inside the compressor, trying to make the center of gravity of the whole machine on the central axis of the compressor to reduce the abnormal vibration noise caused by the offset of the liquid distributor. Based on the relative position between the liquid distributor and the compressor, it can be roughly divided into an upper liquid distributor, a lower liquid distributor, an annular liquid distributor, etc.

[0003] To reduce the overall radial size of the compressor and solve the problem of the up-and-down swing of the liquid distributor, the patent with the patent number CN217873276U discloses a new type of compressor. In this compressor, the pump body is placed above the motor, and the liquid distributor covers the outer surface of the compressor housing to form a liquid distributor cavity. The upper and lower ends of the liquid distributor housing are provided with necked-in openings. There are suction holes processed on the upper half of the compressor housing, and the suction holes are connected to the liquid distributor cavity through a transfer pipe. However, during the operation of this compressor, the lower motor rotor will stir the oil pool, increasing the frictional loss and accompanied by liquid hammer phenomenon. At the same time, since the liquid distributor completely covers the outer surface of the compressor housing, it causes the oil pool to be supercooled, resulting in a decrease in the lubrication performance of the whole machine and bringing the problem of suction overheating. The filter screen is set on the intake pipe and cannot block the impurities in the liquid distributor cavity from damaging the pump body.

[0004] The patent with the patent number CN209621613U discloses a new type of compressor, which forms a new liquid distributor structure by combining an inner shell, an outer shell, a top cover, and a bottom cover. The compressor and the liquid distributor structure are integrally formed. However, this compressor does not achieve the functions of filtering, separating oil, and separating liquid of the conventional liquid distributor. The impurities and a large amount of liquid-carrying phenomenon in the suction cause great damage to the pump body and are extremely unreliable. And its liquid distributor also basically completely covers the outer surface of the compressor housing, which also causes the oil pool to be supercooled, resulting in a decrease in the lubrication performance of the whole machine and bringing the problem of suction overheating.

[0005] Due to the technical problems in the existing compressors with annular liquid distributors, such as the lubricating oil being supercooled due to the influence of the liquid distributor on the pump body or the oil pool, resulting in a decrease in the lubrication performance of the compressor and causing suction overheating, etc., the present utility model researches and designs a compressor assembly and an air conditioner with a liquid distributor. Content of the Utility Model

[0006] Therefore, the technical problem to be solved by the present utility model is to overcome the problem in the prior art that in a compressor with an annular liquid distributor, the pump body or the oil sump is affected by the liquid distributor, resulting in overcooling of the lubricating oil, which reduces the lubrication performance of the compressor. Thus, a compressor assembly and an air conditioner with a liquid distributor are provided.

[0007] To solve the above problems, the present utility model provides a compressor assembly with a liquid distributor, which includes:

[0008] A compressor housing, a liquid distributor, and a pump body assembly. The liquid distributor is disposed on the outer peripheral wall of the compressor housing, the pump body assembly is disposed inside the compressor housing, and the height of the bottom of the liquid distributor is higher than the height of the upper end of the pump body assembly.

[0009] In some embodiments,

[0010] The liquid distributor includes an upper plate, a lower plate, and a housing. The upper end of the housing is connected to the upper plate, and the lower end of the housing is connected to the lower plate;

[0011] A liquid distributor cavity of the liquid distributor is formed between the upper plate, the lower plate, the housing, and the outer peripheral wall of the compressor housing; alternatively, the liquid distributor further includes an inner shell, the inner shell is disposed in a fitting manner on the outer peripheral wall of the compressor housing, and a liquid distributor cavity of the liquid distributor is formed between the upper plate, the lower plate, the housing, and the inner shell.

[0012] In some embodiments,

[0013] The pump body assembly includes a cylinder, an upper flange, and a lower flange. The upper flange is disposed at the upper end of the cylinder, the lower flange is disposed at the lower end of the cylinder, and the bottom end height of the lower plate of the liquid distributor is higher than the top end height of the upper flange.

[0014] In some embodiments,

[0015] An air inlet pipe is further included. One end of the air inlet pipe is communicated with the inside of the liquid distributor, and the other end is communicated with the pump body assembly inside the compressor housing to supply air to the pump body assembly. The end of the air inlet pipe communicated with the liquid distributor extends into the inside of the liquid distributor from the upper plate at the top of the liquid distributor, or the end of the air inlet pipe communicated with the liquid distributor extends into the inside of the liquid distributor from the housing on the side of the liquid distributor.

[0016] In some embodiments,

[0017] A second oil return hole is formed in the lower plate, and the second oil return hole penetrates through the upper and lower end faces of the lower plate. A first oil return hole is further provided on the intake pipe, and the first oil return hole penetrates from the outer wall of the intake pipe to its interior. The first oil return hole is communicated with the second oil return hole through an oil return pipe.

[0018] In some embodiments,

[0019] The outer diameter of the housing of the liquid distributor is 1.2 to 1.5 times the outer diameter of the compressor housing, the height of the liquid distributor is 0.5 to 1 times the height of the compressor housing, the cavity volume of the liquid distributor is 30 to 40 times the compressor displacement, and the wall thickness of the housing of the liquid distributor is 1 to 2 mm; in the projection plane of the horizontal plane, the connection line between the second oil return hole and the central axis of the compressor is the first connection line, and the connection line between the suction port of the pump body assembly and the central axis of the compressor is the second connection line, and the included angle between the first connection line and the second connection line is 30° to 50°.

[0020] In some embodiments,

[0021] An intake pipe is further included. One end of the intake pipe can be communicated with the internal cavity of the liquid distributor to supply refrigerant fluid to the liquid distributor; in the projection plane of the horizontal plane, the circumferential angle between the intake pipe and the intake pipe is less than 90°, that is, the intake pipe and the intake pipe are located on the same side of the compressor housing.

[0022] In some embodiments,

[0023] When the liquid distributor cavity of the liquid distributor is formed between the outer circumferences of the upper plate, the lower plate, the housing and the compressor housing, a flow guiding groove and / or a flow guiding protrusion is provided on the outer wall of the compressor housing and / or the inner wall of the housing of the liquid distributor.

[0024] In some embodiments,

[0025] The upper plate, the lower plate and the housing of the liquid distributor are integrally formed, or the upper plate, the lower plate and the housing of the liquid distributor are all split structures and are connected to each other as a whole;

[0026] When an inner housing is further included, the upper plate, the lower plate, the housing and the inner housing of the liquid distributor are integrally formed, or the upper plate, the lower plate, the housing and the inner housing of the liquid distributor are all split structures and are connected to each other as a whole.

[0027] In some embodiments,

[0028] The liquid distributor and the compressor housing are integrally formed, that is, when a liquid distributor cavity of the liquid distributor is formed between the upper plate, the lower plate, the outer shell and the outer periphery of the compressor housing, the upper plate, the lower plate and the outer shell of the liquid distributor are integrally formed with the compressor housing; when the liquid distributor further includes an inner shell, the upper plate, the lower plate, the outer shell and the inner shell of the liquid distributor are integrally formed with the compressor housing.

[0029] In some embodiments,

[0030] In the projection plane of the horizontal plane, the outer shell is a circular structure or a structure of an arc segment;

[0031] A coating made of a heat-insulating material is coated on the outer peripheral wall and / or the inner peripheral wall of the compressor housing;

[0032] The radially inner end of the upper plate is in sealed connection with the outer peripheral wall of the compressor housing, and there is no gap between them; the radially inner end of the lower plate is in sealed connection with the outer peripheral wall of the compressor housing, and there is no gap between them.

[0033] The present invention also provides an air conditioner, which includes the aforementioned compressor assembly with a liquid distributor.

[0034] A compressor assembly with a liquid distributor and an air conditioner provided by the present invention have the following beneficial effects:

[0035] 1. By setting the bottom height of the liquid distributor provided on the outer periphery of the compressor housing to be higher than the upper end height of the pump assembly inside the compressor housing, the present invention can prevent the low-temperature refrigerant in the liquid distributor from affecting the pump assembly, prevent the lubricating oil in the pump assembly or even the oil sump at the bottom of the compressor housing from being cooled by the low-temperature refrigerant, avoid the lubricating oil from being cooled and supercooled, so that the pump assembly cannot reach the required lubrication conditions, prevent the lubrication performance of the pump assembly from decreasing, and at the same time prevent the high-temperature lubricating oil from heating the inhaled refrigerant to prevent the occurrence of suction overheating, ensuring that the compressor can inhale normally and operate normally and reliably.

[0036] 2. By inserting the end of the intake pipe of the pump assembly communicating with the liquid distributor into the interior of the liquid distributor from the top of the liquid distributor, the present invention can further suck gas from the top of the liquid distributor, further avoid the pump assembly from sucking liquid with gas, and thus further improve the compressor efficiency; the present invention also opens a second oil return hole on the lower plate of the liquid distributor and a first oil return hole on the intake pipe, and connects the first and second oil return holes through an oil return pipe, so as to introduce the lubricating oil at the bottom of the annular liquid distributor into the compressor pump assembly, ensure the normal and reliable operation of the compressor pump, and avoid the occurrence of oil shortage.

[0037] 3. The present utility model also effectively reduces the overall radial dimension of the compressor assembly by setting the suction pipe of the liquid distributor to be less than 90° apart from the intake pipe within the horizontal plane projection surface (i.e., the axial projection surface); the present utility model also provides diversion grooves and / or diversion protrusions on the outer wall of the compressor housing and / or the inner wall of the liquid distributor housing, which can play a role in guiding the refrigerant fluid, preventing the refrigerant fluid entering the liquid distributor from being subject to a large resistance, improving the flow efficiency of the refrigerant fluid in the liquid distributor, and reducing the flow loss; the outer peripheral wall and / or the inner peripheral wall of the compressor housing of the present utility model is coated with a heat insulation material coating, which can reduce the heat exchange between the inside of the compressor housing and the liquid distributor, prevent the inside of the compressor housing from being cooled by the liquid distributor, reduce the lubricating performance of the lubricating oil, and at the same time prevent the high-temperature lubricating oil from heating the inhaled refrigerant, so as to prevent the occurrence of suction overheating and ensure the normal and reliable operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a longitudinal sectional view of the compressor assembly with a liquid distributor of the present utility model;

[0039] Figure 2 is Figure 1 a partially enlarged view of the solution where an oil return pipe is provided between the lower plate of the liquid distributor and the intake pipe (the liquid distributor is split);

[0040] Figure 3 is Figure 1 a partially enlarged view of the solution where an oil return pipe is provided between the lower plate of the liquid distributor and the intake pipe (the liquid distributor is integrated);

[0041] Figure 4 is Figure 1 a structure enlarged view of the suction pipe part of the liquid distributor in

[0042] Figure 5 is Figure 1 a top view of

[0043] Figure 6 is Figure 1 a dimensional structure diagram of the liquid distributor in

[0044] Figure 7 is a longitudinal sectional view of another embodiment of the compressor assembly with a liquid distributor of the present utility model (the intake pipe intakes air from the top of the liquid distributor);

[0045] Figure 8 is a schematic structural diagram of the liquid distributor + intake pipe + suction pipe of the present utility model.

[0046] The reference numerals are shown as:

[0047] 01. Upper cover assembly; 02. Compressor housing; 03. Liquid distributor; 04. Motor assembly; 05. Pump body assembly; 51. Cylinder; 52. Upper flange; 53. Lower flange; 06. Lower cover assembly; 11. Outer shell; 12. Suction pipe; 13. Filter screen; 14. Inlet pipe; 15. Upper plate; 16. Lower plate; 17. Liquid distributor cavity; 18. First oil return hole; 19. Second oil return hole; 21. Pump body suction port; 22. Housing suction pipe; 23. Oil sump; 24. Oil return pipe; 30. Integrated annular liquid distributor; 31. Support pipe; 32. Connecting pipe. Detailed implementation manners

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0050] Unless otherwise specifically stated, the relative arrangements of the components and steps set forth in these embodiments, numerical expressions and values do not limit the scope of the present invention. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanations, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0052] For the sake of convenience in description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the drawings for the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0053] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0054] As Figure 1-8 shown, the present utility model provides a compressor assembly having an annular liquid distributor, which includes:

[0055] a compressor housing 02, a liquid distributor 03 and a pump body assembly 05. The liquid distributor 03 is disposed on the outer peripheral wall of the compressor housing 02, the pump body assembly 05 is disposed inside the compressor housing 02, and the height of the bottom of the liquid distributor 03 is higher than the height of the upper end of the pump body assembly 05.

[0056] In the present utility model, by setting the bottom height of the liquid distributor disposed on the outer periphery of the compressor housing to be higher than the upper end height of the pump assembly inside the compressor housing, it is possible to prevent the low-temperature refrigerant in the liquid distributor from affecting the pump assembly, prevent the lubricating oil in the pump assembly or even the oil sump at the bottom of the compressor housing from being cooled by the low-temperature refrigerant, avoid the lubricating oil being cooled to generate supercooling, resulting in the pump assembly not reaching the required lubrication conditions, prevent the lubrication performance of the pump assembly from decreasing, and at the same time prevent the high-temperature lubricating oil from heating the inhaled refrigerant, so as to prevent the occurrence of suction overheating and ensure that the compressor can inhale normally and operate normally and reliably.

[0057] In some embodiments,

[0058] The liquid distributor 03 includes an upper plate 15, a lower plate 16 and a housing 11. The upper end of the housing 11 is connected to the upper plate 15, and the lower end of the housing 11 is connected to the lower plate 16.

[0059] A liquid distributor cavity 17 of the liquid distributor 03 is defined between the upper plate 15, the lower plate 16, the housing 11 and the outer peripheral wall of the compressor housing 02; alternatively, the liquid distributor 03 further includes an inner shell, the inner shell is arranged in close contact with the outer peripheral wall of the compressor housing 02, and a liquid distributor cavity 17 of the liquid distributor 03 is defined between the upper plate 15, the lower plate 16, the housing 11 and the inner shell.

[0060] This is a preferred structural form of the liquid distributor of the present utility model, that is, a structure including an upper plate, a lower plate and a housing. The upper end of the housing is connected to the outer periphery of the upper plate, and the lower end of the housing is connected to the outer periphery of the lower plate. The inner peripheries of the upper plate and the lower plate extend to be connected to the outer peripheral wall of the compressor housing (preferably by welding), so that the liquid distributor is fixed on the outer peripheral wall of the compressor housing. The liquid distributor of the present utility model may have the structure of an inner shell or may not have the structure of an inner shell. When having the structure of an inner shell, the upper end of the inner shell is connected to the inner periphery of the upper plate, the lower end of the inner shell is connected to the inner periphery of the lower plate, and the inner side of the inner shell is arranged in close contact with the outer wall of the compressor housing. Preferably, the inner shell and the compressor housing are welded into one body. A sealed cavity, that is, the liquid distributor cavity, can be defined by the upper plate, the lower plate, the housing and the compressor housing, and a sealed cavity, that is, the liquid distributor cavity, can also be defined by the upper plate, the lower plate, the housing and the inner shell.

[0061] In some embodiments,

[0062] The pump assembly 05 includes a cylinder 51, an upper flange 52 and a lower flange 53. The upper flange 52 is arranged at the upper end of the cylinder 51, the lower flange 53 is arranged at the lower end of the cylinder 51, and the bottom end height of the lower plate 16 of the liquid distributor 03 is higher than the top end height of the upper flange 52.

[0063] This is the preferred structural form of the pump body assembly of the present utility model, that is, it includes a cylinder and the structure of upper and lower flanges, and the bottom end height of the lower plate of the liquid distributor is higher than the top end height of the upper flange, so as to ensure to the greatest extent that the bottom end height of the liquid distributor is higher than the top end of the pump body, further effectively ensuring that the pump body assembly will not be affected by the cooling of the refrigerant inside the liquid distributor, ensuring that the lubricating oil inside the pump body assembly can be normally lubricated, avoiding abnormal lubricating oil resulting in too high suction temperature of the pump body, and ensuring the normal and reliable operation of the compressor.

[0064] Since the lubricating oil will boil upward to near the upper flange when the pump body is working, in order to avoid overheating of the suction, the present utility model can further raise the bottom end of the outer shell 11 of the annular liquid distributor, and only the volume of the liquid distributor cavity 17 needs to reach the volume required for the pressure stabilization condition of this type of compressor.

[0065] In some embodiments,

[0066] It further includes an intake pipe 14. One end of the intake pipe 14 is communicated with the inside of the liquid distributor 03, and the other end is communicated with the pump body assembly 05 inside the compressor housing 02 to intake air for the pump body assembly 05. And the end of the intake pipe 14 communicated with the liquid distributor 03 extends into the inside of the liquid distributor 03 from the upper plate 15 at the top of the liquid distributor 03, or the end of the intake pipe 14 communicated with the liquid distributor 03 extends into the inside of the liquid distributor 03 from the outer shell 11 on the side of the liquid distributor 03.

[0067] The present utility model can further suck gas from the top of the liquid distributor by inserting the end of the intake pipe of the pump body assembly communicated with the liquid distributor into the inside of the liquid distributor from the top, further avoiding liquid carry - over during suction of the pump body assembly, thereby further improving the efficiency of the compressor; the present utility model can also suck air by extending the intake pipe into the liquid distributor from the outer shell on the side of the liquid distributor.

[0068] Combined with Figure 7 As shown, the intake pipe 14 preferably extends into the inside of the liquid distributor cavity 17 from the upper plate 15 of the liquid distributor, further preventing liquid carry - over during suction and enhancing the efficiency of the compressor.

[0069] In some embodiments,

[0070] A second oil return hole 19 is opened on the lower plate 16. The second oil return hole 19 penetrates through the upper and lower end faces of the lower plate 16. A first oil return hole 18 is also provided on the intake pipe 14. The first oil return hole 18 penetrates from the outer wall of the intake pipe 14 to its inside. The first oil return hole 18 is communicated with the second oil return hole 19 through an oil return pipe 24.

[0071] The utility model also opens a second oil return hole on the lower plate of the liquid distributor and a first oil return hole on the air inlet pipe, and connects the first and second oil return holes through an oil return pipe, so as to introduce the lubricating oil at the bottom of the annular liquid distributor into the compressor pump body assembly, ensure the normal and reliable operation of the compressor pump body, and avoid the occurrence of oil shortage.

[0072] As Figure 2 shown, the lower edge of the outer shell 11 of the annular liquid distributor of the utility model is higher than the top of the pump body suction port 21. When the compressor operates normally, the lubricating oil can submerge the upper flange. This design of the utility model can prevent the low-temperature and low-pressure refrigerant from reducing the temperature of the lubricating oil in the oil sump 23. The viscosity of the lubricating oil increases with the decrease of temperature. The greater the viscosity of the lubricating oil, the poorer its lubricating performance for the components in the pump body assembly 05. The inner sides of the upper and lower ends of the outer shell 11 of the annular liquid distributor are processed with steps, and the upper plate 15 and the lower plate 16 of the liquid distributor are also processed with steps matching the outer shell 11. The outer diameter of the outer circle of the upper plate 15 and the lower plate 16 of the liquid distributor is more than 5 mm larger than the outer diameter of the outer circle of the annular liquid distributor's outer shell 11, which is convenient for welding the outer shell 11 with the upper plate 15 and the lower plate 16. One end of the air inlet pipe 14 is inserted into the inside of the liquid distributor cavity 17, and the other end is inserted into the inside of the pump body suction port 21, so as to transport the refrigerant in the liquid distributor cavity 17 to the pump body suction port 21, and then compress the refrigerant into a high-temperature and high-pressure gas through the compression of the pump body assembly 05. When installing the compressor, first use a steel ring to tightly connect the housing suction pipe 22 and the cylinder, and secondly, preferably use the ring welding / TIG welding process to weld points B and C, so that the housing suction pipe 22 is connected to the air inlet pipe 14. A first oil return hole 18 is processed on the air inlet pipe 14, and a second oil return hole 19 is processed on the lower plate 16 of the liquid distributor. One end of the oil return pipe 24 is inserted into the liquid lubricating oil and refrigerant in the liquid distributor cavity 17 and flows through the oil return pipe 24 into the air inlet pipe 14, and then flows into the cylinder of the pump body assembly 05. A gap should be left between the upper plate 15 of the liquid distributor and the compressor housing 02, and a gap should also be left between the lower plate 16 of the liquid distributor and the compressor housing 02 to offset the coaxiality deviation of each part (by reserving a larger machining gap to ensure the coaxiality requirement). The compressor of the utility model solves the problem of unstable center of gravity of the traditional rotary compressor, and the center of gravity is approximately located at the center of gravity of the compressor body, which is beneficial to reducing the offset vibration noise of the compressor. Here, the gap means that this gap needs to be reserved during the installation process of the liquid distributor and the compressor housing. After adjusting the coaxiality and other processes, the liquid distributor and the compressor housing need to be fixedly installed as a whole (preferably by welding). At this time, it is necessary to ensure that there is no gap between the liquid distributor and the compressor housing as much as possible and ensure sealing as much as possible.

[0073] In some embodiments,

[0074] The outer diameter of the housing 11 of the liquid distributor 03 is 1.2 to 1.5 times the outer diameter of the compressor housing 02. The height of the liquid distributor 03 is 0.5 to 1 times the height of the compressor housing 02. The cavity volume of the liquid distributor 03 is 30 to 40 times the compressor displacement. The wall thickness of the housing 11 of the liquid distributor 03 is 1 to 2 mm. In the projection plane of the horizontal plane, the connection line between the second oil return hole 19 and the compressor central axis is the first connection line, and the connection line between the suction port of the pump body assembly 05 and the compressor central axis is the second connection line. The included angle between the first connection line and the second connection line is 30° to 50°.

[0075] Combined with Figure 6 and Figure 7 As shown, the outer diameter S11 of the housing 11 of the annular liquid distributor of the present invention is greater than the outer diameter S12 of the compressor housing 02. For a single-cylinder rotary compressor, the outer diameter S11 of the housing 11 of the annular liquid distributor is more than 9 mm greater than the outer diameter S12 of the compressor housing 02. For compressors such as double-cylinder and triple-cylinder compressors, the outer diameter S11 of the housing 11 of the annular liquid distributor is different and needs to be calculated according to the minimum volume of suction pressure stabilization, and the minimum should not be less than 9 mm.

[0076] The suction pipe 12 and the intake pipe 14 of the present invention are distributed on both sides of the liquid distributor 03, and the included angle between them is preferably 180° (which can increase the effect of gas-liquid separation). The outer diameter of the housing 11 of the annular liquid distributor is preferably 1.2 to 1.5 times the outer diameter of the compressor housing 02. The height of the housing 11 is preferably 0.5 to 1 times the height of the compressor housing 02. The volume of the liquid distributor cavity 17 is preferably 30 to 40 times the compressor displacement. The wall thickness of the housing 11 of the annular liquid distributor is preferably 1 to 5 mm. Both suction holes (the inlet of the suction pipe and the outlet of the intake pipe) of the housing 11 of the annular liquid distributor are preferably located in the upper half of the housing 11 of the annular liquid distributor. The diameter of the second oil return hole 18 is φ1 mm to φ3 mm. The annular liquid distributor structure of the present invention can reduce the radial dimension of the whole compressor without increasing its axial dimension; solve the problem of the up-and-down swing of the liquid distributor, reduce the noise radiation intensity of the whole compressor, and is beneficial to the heat dissipation of the compressor; reduce the volume of the whole machine and save the production, manufacturing and transportation costs.

[0077] Combined with Figure 6 and Figure 7 As shown, the outer diameter S11 of the housing 11 of the annular liquid distributor of the present invention is greater than the outer diameter S12 of the compressor housing 02. For a single-cylinder rotary compressor, the outer diameter S11 of the housing 11 of the annular liquid distributor is preferably more than 9 mm greater than the outer diameter S12 of the compressor housing 02. For compressors such as double-cylinder and triple-cylinder compressors, the outer diameter S11 of the housing 11 of the annular liquid distributor is different and needs to be calculated according to the minimum volume of suction pressure stabilization, and the minimum should not be less than 9 mm.

[0078] Combined Figure 8 As shown, the outer shell 11 of the annular liquid distributor is wrapped outside the compressor housing 02.

[0079] In addition to the oil return through the oil return pipe, the capillary oil return method and the siphon oil return method can also be adopted in the present utility model.

[0080] Through the above size relationship, the present utility model can significantly reduce the motor electromagnetic noise and the yaw noise of the liquid distributor of the rotary compressor, and can reduce the noise and vibration of the whole compressor to less than 50% of that of the conventional compressor.

[0081] The present utility model can reduce the overall radial dimension of the whole compressor by more than 28%.

[0082] In some embodiments,

[0083] It further includes an intake pipe 12. One end of the intake pipe 12 can communicate with the internal cavity of the liquid distributor 03 to supply refrigerant fluid to the liquid distributor 03; in the projection plane of the horizontal plane, the angle between the intake pipe 12 and the intake air pipe 14 in the circumferential direction is less than 90°, that is, the intake pipe 12 and the intake air pipe 14 are located on the same side of the compressor housing 02. Preferably, the intake pipe 12 is located directly above the intake air pipe 14 in the vertical direction (as long as the two do not interfere).

[0084] By setting the intake pipe of the liquid distributor to be less than 90° apart from the intake air pipe in the projection plane of the horizontal plane (i.e., the axial projection plane), the present utility model can effectively reduce the overall radial dimension of the compressor assembly.

[0085] The present utility model provides an annular liquid distributor housing covering a part of the outer wall of the compressor. The cavity formed by the housing and the outer wall of the compressor and the components in the cavity play the roles of filtering, pressure stabilizing, oil separation and liquid separation; the inner wall of the liquid distributor cavity and the outer wall of the compressor housing are the same wall surface, or can be a separate wall surface. After the motor and exhaust noise are transmitted through the compressor housing, they are further attenuated through the liquid distributor cavity, reducing the overall noise radiation intensity of the machine; the pump body is located below the motor, and the intake air pipe (bent pipe) is located outside the annular liquid distributor cavity, connecting the suction port of the pump body and the suction hole of the liquid distributor housing; the bottom end of the annular liquid distributor housing should be slightly higher than the suction port of the pump body to prevent the refrigerant gas from cooling the oil sump and avoid the oil sump from being supercooled; the filter screen is designed at the middle position of the intake pipe to prevent impurities in the newly inhaled refrigerant from entering the liquid distributor cavity; the side wall of the intake air pipe is designed with an offset oil return hole / oil return device.

[0086] The utility model cancels the cylindrical liquid distributor structure on one side of the compressor, and covers a new type of housing on the outer wall of the compressor. The cavity formed between the housing and the outer wall of the compressor and the components in the cavity perform the four functions of filtering, pressure stabilizing, oil separating, and liquid separating of the liquid distributor. Through the utility model, first, the radial dimension of the whole compressor can be reduced without increasing its axial dimension; second, the problem of offset swing of the liquid distributor is solved; third, the noise can be further attenuated in the liquid distributor cavity, reducing the noise radiation intensity of the whole machine, and at the same time being beneficial to the heat dissipation of the compressor; fourth, it can prevent liquid carry - over in suction and over - cooling of the oil pool.

[0087] Combined with Figure 4 As shown, the lower end of the suction pipe 12 is also sequentially connected to the support pipe 31 and the connecting pipe 32. The filter screen 13 presents a downward - concave curved arch shape, and the refrigerant enters the inside of the support pipe 31. Impurities in the newly inhaled refrigerant are blocked by the filter screen 13 and cannot enter the inside of the liquid distributor cavity 17, and thus cannot damage the pump body assembly 05. The suction pipe 12, the support pipe 31, and the connecting pipe 32 are preferably welded to each other.

[0088] Combined with Figure 5 As shown, the optimal relative angle between the suction pipe 12 and the intake pipe 14 of the utility model is 180°, but it is not necessary to be 180° along the circumferential direction, that is, the angle S10 can be 0° - 90°. As long as the liquid refrigerant inhaled by the suction pipe 12 is not directly injected into the intake pipe 14, the circumferential angle between the suction pipe 12 and the intake pipe 14 under this condition belongs to the protection scope of the compressor of the utility model. The optimal inner diameter of the suction pipe 12 and the intake pipe 14 is φ16mm, and different inner diameter sizes can also be set according to different displacements of the compressor.

[0089] In some embodiments,

[0090] When the liquid distributor cavity 17 of the liquid distributor 03 is formed between the upper plate 15, the lower plate 16, the outer shell 11, and the outer periphery of the compressor housing 02, a flow - guiding groove and / or a flow - guiding protrusion is provided on the outer wall of the compressor housing 02 and / or the inner wall of the outer shell 11 of the liquid distributor 03.

[0091] The utility model also can play a role in guiding the refrigerant fluid by providing a flow - guiding groove and / or a flow - guiding protrusion on the outer wall of the compressor housing and / or the inner wall of the liquid distributor outer shell, preventing the refrigerant fluid entering the liquid distributor from being subject to a large resistance, improving the flow efficiency of the refrigerant fluid in the liquid distributor, and reducing the flow loss.

[0092] In some embodiments,

[0093] The upper plate 15, the lower plate 16 and the outer shell 11 of the liquid distributor 03 are integrally formed, or the upper plate 15, the lower plate 16 and the outer shell 11 of the liquid distributor 03 are all split structures and are connected to form an integral body;

[0094] When an inner shell is further included, the upper plate 15, the lower plate 16, the outer shell 11 and the inner shell of the liquid distributor 03 are integrally formed, or the upper plate 15, the lower plate 16, the outer shell 11 and the inner shell of the liquid distributor 03 are all split structures and are connected to form an integral body.

[0095] In some embodiments,

[0096] The liquid distributor 03 and the compressor housing 02 are integrally formed: that is, when the upper plate 15, the lower plate 16, the outer shell 11 and the outer periphery of the compressor housing 02 enclose the liquid distributor cavity 17 of the liquid distributor 03, the upper plate 15, the lower plate 16 and the outer shell 11 of the liquid distributor 03 and the compressor housing 02 are integrally formed; when the liquid distributor 03 further includes an inner shell, the upper plate 15, the lower plate 16, the outer shell 11 and the inner shell of the liquid distributor 03 and the compressor housing 02 are integrally formed.

[0097] As Figure 1 shown, the present utility model provides a novel compressor assembly, including an upper cover assembly 01, a compressor housing 02, a liquid distributor 03, a motor assembly 04, a pump body assembly 05, and a lower cover assembly 06. The liquid distributor 03 is composed of an outer shell 11, a suction pipe 12, a filter screen 13, an intake pipe 14 (bent pipe), an upper plate 15 and a lower plate 16; the liquid distributor 03 covers the outer wall surface of the compressor housing 02 and is preferably connected to the compressor housing 02 by circumferential welding; preferably, the outer shell 11, the upper plate 15, the lower plate 16 and the compressor housing 02 enclose a liquid distributor cavity 17, which functions to stabilize the suction pressure, separate the liquid refrigerant, and separate the lubricating oil; the filter screen 13 functions to filter impurities and is cold-pressed into the suction pipe 12; the liquid distributor cavity 17 is connected to the cylinder in the pump body assembly 05 through the intake pipe 14, and the low-temperature and low-pressure gaseous refrigerant is compressed into a high-temperature and high-pressure gas by the pump body assembly 05; the upper end and the lower end of the outer shell 11 of the liquid distributor are welded to the upper plate 15 and the lower plate 16 respectively, and the upper plate 15 and the lower plate 16 are respectively matched with the compressor housing 02, and the outer shell 11, the upper plate 15, the lower plate 16 and the compressor housing 02 of the annular liquid distributor are connected by circumferential welding technology.

[0098] As Figure 2As shown, when installing the annular liquid distributor of the present utility model, it is preferably to first weld the upper plate 15 and the lower plate 16 of the liquid distributor on the outer shell 11 of the annular liquid distributor, and then perform circumferential welding connection between the welded liquid distributor component and the compressor. The welding process of the compressor in the embodiment of the present utility model is as follows: First, assemble the upper cover assembly 01, the compressor housing 02, the motor assembly 04, the pump body assembly 05, and the lower cover assembly 06 of the compressor. Second, clean the welding slag and oil stain on the outer wall surface of the assembled compressor housing 02. Third, weld the outer shell 11, the upper plate 15, and the lower plate 16 of the annular liquid distributor. Fourth, circumferentially weld the welded liquid distributor assembly to the outside of the compressor housing 02. Fifth, weld the intake pipe 14 and the suction pipe 12 assembly. The sum of the heights of the upper plate 15, the lower plate 16, and the outer shell 11 of the liquid distributor is a fixed value. According to different models of the compressor, the volume inside the liquid distributor cavity is different, and the minimum volume that can achieve liquid storage in the liquid distributor belongs to the protection scope of the present utility model.

[0099] As Figure 3 shown, in addition to the split annular liquid distributor housing structure, the liquid distributor can also be processed into an integral structure, that is, the outer shell 11, the upper plate 15, and the lower plate 16 of the annular liquid distributor are processed into an integral annular liquid distributor 30. This solution also has the same intake pipe 14, the first oil return hole 18, the second oil return hole 19, and the oil return pipe 24. The welding sequence of the integral annular liquid distributor type compressor is: first, put the annular liquid distributor on the compressor housing and perform circumferential welding connection, then weld the intake pipe 14 to the integral annular liquid distributor 30 and the pump body suction port 21, and finally weld the oil return pipe 24 to achieve complete sealing.

[0100] In some embodiments,

[0101] In the projection plane on the horizontal plane, the outer shell 11 is a circular structure or a structure of an arc segment;

[0102] A coating made of heat insulation material is coated on the outer peripheral wall and / or the inner peripheral wall of the compressor housing 02;

[0103] There is a sealed connection between the radially inner end of the upper plate 15 and the outer peripheral wall of the compressor housing 02, and there is no gap between them (after the liquid distributor upper plate and the compressor housing are installed), and there is a sealed connection between the radially inner end of the lower plate 16 and the outer peripheral wall of the compressor housing 02, and there is no gap between them (after the liquid distributor lower plate and the compressor housing are installed).

[0104] Coating the heat insulation material coating on the outer peripheral wall and / or the inner peripheral wall of the compressor housing of the present utility model can reduce the heat exchange between the inside of the compressor housing and the liquid distributor, prevent the inside of the compressor housing from being cooled by the liquid distributor, reduce the lubricating performance of the lubricating oil, and at the same time prevent the high-temperature lubricating oil from heating the inhaled refrigerant, so as to prevent the occurrence of suction overheating and ensure the normal and reliable operation of the compressor.

[0105] The present utility model further provides an air conditioner, which comprises the compressor assembly with a liquid distributor as described above.

[0106] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model. The above is only the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and variations can be made, as well as the mutual combination of multiple embodiments, etc. These improvements and variations should also be regarded as the protection scope of the present utility model.

Claims

1. A compressor assembly with a liquid distributor, characterized in that: Comprising: A compressor housing (02), a liquid distributor (03) and a pump body assembly (05). The liquid distributor (03) is arranged on the outer peripheral wall of the compressor housing (02), and the pump body assembly (05) is arranged inside the compressor housing (02), and the height of the bottom of the liquid distributor (03) is higher than the height of the upper end of the pump body assembly (05).

2. The compressor assembly with a liquid distributor according to claim 1, characterized in that: The liquid distributor (03) includes an upper plate (15), a lower plate (16) and a housing (11). The upper end of the housing (11) is connected to the upper plate (15), and the lower end of the housing (11) is connected to the lower plate (16); A liquid distributor cavity (17) of the liquid distributor (03) is formed between the upper plate (15), the lower plate (16), the housing (11) and the outer peripheral wall of the compressor housing (02); alternatively, the liquid distributor (03) further includes an inner shell, the inner shell is arranged in close contact with the outer peripheral wall of the compressor housing (02), and a liquid distributor cavity (17) of the liquid distributor (03) is formed between the upper plate (15), the lower plate (16), the housing (11) and the inner shell.

3. The compressor assembly with a liquid distributor according to claim 2, characterized in that: The pump body assembly (05) includes a cylinder (51), an upper flange (52) and a lower flange (53). The upper flange (52) is arranged at the upper end of the cylinder (51), the lower flange (53) is arranged at the lower end of the cylinder (51), and the height of the bottom end of the lower plate (16) of the liquid distributor (03) is higher than the height of the top end of the upper flange (52).

4. The compressor assembly with a liquid distributor according to claim 2, characterized in that: It further includes an air inlet pipe (14). One end of the air inlet pipe (14) is communicated with the inside of the liquid distributor (03), and the other end is communicated with the pump body assembly (05) inside the compressor housing (02) to supply air to the pump body assembly (05), and the end of the air inlet pipe (14) communicated with the liquid distributor (03) extends into the inside of the liquid distributor (03) from the upper plate (15) at the top of the liquid distributor (03), or the end of the air inlet pipe (14) communicated with the liquid distributor (03) extends into the inside of the liquid distributor (03) from the housing (11) on the side of the liquid distributor (03).

5. The compressor assembly with a liquid distributor according to claim 4, characterized in that: A second oil return hole (19) is formed in the lower plate (16), the second oil return hole (19) penetrates through the upper and lower end faces of the lower plate (16), and a first oil return hole (18) is further arranged on the air inlet pipe (14), the first oil return hole (18) penetrates from the outer wall of the air inlet pipe (14) to its inside, and the first oil return hole (18) is communicated with the second oil return hole (19) through an oil return pipe (24).

6. The compressor assembly with a liquid distributor according to claim 5, characterized in that: The outer diameter of the housing (11) of the liquid distributor (03) is 1.2 to 1.5 times the outer diameter of the compressor housing (02), the height of the liquid distributor (03) is 0.5 to 1 times the height of the compressor housing (02), the cavity volume of the liquid distributor (03) is 30 to 40 times the compressor displacement, and the wall thickness of the housing (11) of the liquid distributor (03) is 1 to 2 mm; in the projection plane of the horizontal plane, the connecting line between the second oil return hole (19) and the compressor central axis is the first connecting line, and the connecting line between the suction port of the pump body assembly (05) and the compressor central axis is the second connecting line, and the included angle between the first connecting line and the second connecting line is 30° to 50°.

7. The compressor assembly with a liquid distributor according to claim 4, characterized in that: It further includes a suction pipe (12), one end of the suction pipe (12) can communicate with the internal cavity of the liquid distributor (03) to supply refrigerant fluid to the liquid distributor (03); in the projection plane of the horizontal plane, the circumferential angle between the suction pipe (12) and the intake pipe (14) is less than 90°, that is, the suction pipe (12) and the intake pipe (14) are located on the same side of the compressor housing (02).

8. The compressor assembly with a liquid distributor according to claim 2, characterized in that: When the liquid distributor cavity (17) of the liquid distributor (03) is formed between the outer circumferences of the upper plate (15), the lower plate (16), the housing (11) and the compressor housing (02), a flow guiding groove and / or a flow guiding protrusion is provided on the outer wall of the compressor housing (02) and / or the inner wall of the housing (11) of the liquid distributor (03).

9. The compressor assembly with a liquid distributor according to claim 2, characterized in that: The upper plate (15), the lower plate (16) and the housing (11) of the liquid distributor (03) are integrally formed, or the upper plate (15), the lower plate (16) and the housing (11) of the liquid distributor (03) are all split structures and are connected to each other as a whole; When an inner housing is further included, the upper plate (15), the lower plate (16), the housing (11) and the inner housing of the liquid distributor (03) are integrally formed, or the upper plate (15), the lower plate (16), the housing (11) and the inner housing of the liquid distributor (03) are all split structures and are connected to each other as a whole.

10. The compressor assembly with a liquid distributor according to claim 2, characterized in that: The liquid distributor (03) is integrally formed with the compressor housing (02): that is, when a liquid distributor cavity (17) of the liquid distributor (03) is formed between the upper plate (15), the lower plate (16), the outer housing (11) and the outer periphery of the compressor housing (02), the upper plate (15), the lower plate (16) and the outer housing (11) of the liquid distributor (03) are integrally formed with the compressor housing (02); when the liquid distributor (03) further includes an inner housing, the upper plate (15), the lower plate (16), the outer housing (11) and the inner housing of the liquid distributor (03) are integrally formed with the compressor housing (02).

11. The compressor assembly with a liquid distributor according to claim 2, wherein: In the projection plane of the horizontal plane, the outer housing (11) has a circular structure or a structure of an arc segment; A coating made of a heat-insulating material is coated on the outer peripheral wall and / or the inner peripheral wall of the compressor housing (02); The radially inner end of the upper plate (15) is in sealed connection with the outer peripheral wall of the compressor housing (02), and there is no gap therebetween. The radially inner end of the lower plate (16) is in sealed connection with the outer peripheral wall of the compressor housing (02), and there is no gap therebetween.

12. An air conditioner, characterized in that: It includes the compressor assembly with a liquid distributor according to any one of claims 1-11.

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