Compressor integrated system, air conditioner outdoor unit and heating and ventilation equipment

Abstract

The invention belongs to the technical field of refrigeration, and particularly relates to a compressor integrated system, an air conditioner outdoor unit and heating and ventilation equipment, the compressor integrated system comprises a compressor body, the compressor body comprises a tank body and two compression cavities formed in the tank body, and the two compression cavities are arranged in the axial direction of the tank body at intervals; two air return joints communicated with the two compression cavities respectively are arranged on the side wall of the tank body; one end of the first air return pipe is connected with the two air return connectors, and the other end of the first air return pipe is provided with two air inlet ends. The possibility of gas snatching of the two gas return connectors can be effectively reduced, and the gas return efficiency of the compressor is improved.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and more particularly, to a compressor integrated system, an outdoor unit of an air conditioner, and a heating and ventilation device. Background Art

[0002] In the related art, the compressor system of an outdoor unit of an air conditioner includes a compressor, a low-pressure tank, a gas-liquid separator, connecting pipelines, etc. Among them, a twin-rotor compressor arranges two cylinder assemblies distributed 180 degrees on the same crankshaft, overcoming a series of problems such as capacity limitation and poor cylinder sealing caused by the unbalanced load torque of a single-rotor compressor. The compression chambers of the cylinder assemblies are communicated with the suction joints, and refrigerant is introduced into the corresponding compression chambers through the suction pipelines. Since there is only one suction port in the suction pipeline, the two suction joints are prone to gas robbing problems, resulting in a low suction efficiency of the compressor. Summary of the Invention

[0003] The purpose of this application is to provide a compressor integrated system, an outdoor unit of an air conditioner, and a heating and ventilation device, which can effectively reduce the possibility of gas robbing between the two suction joints and improve the suction efficiency of the compressor.

[0004] A first aspect of this application proposes a compressor integrated system, including: a compressor body, including a tank body and two compression chambers arranged in the tank body, the two compression chambers are arranged at intervals along the axial direction of the tank body, and two suction joints respectively communicated with the two compression chambers are arranged on the side wall of the tank body; a first suction pipeline, one end of the first suction pipeline is connected to the two suction joints, and the other end of the first suction pipeline has two intake ends.

[0005] According to the compressor integrated system provided by the embodiments of this application, the compressor body includes a tank body and two compression chambers arranged in the tank body, two suction joints respectively communicated with the two compression chambers are arranged on the side wall of the tank body, one end of the first suction pipeline is connected to the two suction joints, and the other end of the first suction pipeline has two intake ends. By providing sufficient intake air volume for the first suction pipeline through the two intake ends, the possibility of gas robbing between the two suction joints can be effectively reduced, and the suction efficiency of the compressor can be improved.

[0006] In addition, according to the compressor integrated system of this application, the following additional technical features may also be provided:

[0007] In some embodiments of this application, the first suction pipeline includes two first pipe segments arranged at intervals and a second pipe segment connected between the ends of the two first pipe segments. The first pipe segment is a straight segment parallel to the axial direction of the tank body, the second pipe segment is an arc segment, the two suction joints are arranged axially aligned along the tank body and are respectively communicated with one of the first pipe segments, and the end of the first pipe segment far from the second pipe segment is the intake end.

[0008] In some embodiments of the present application, the first return air pipe includes two separately arranged pipe sections, the pipe sections include a straight pipe section and an inclined pipe section connected in sequence, the straight pipe section is arranged parallel to the axial direction of the tank body, the straight pipe sections of the two pipe sections are arranged at intervals, the inclined pipe sections of the two pipe sections are arranged at a preset angle, the two return air joints are arranged to be aligned along the axial direction of the tank body, the inclined pipe section of one pipe section is connected to a return air joint, and the end of the straight pipe section away from the inclined pipe section is the air inlet end.

[0009] In some embodiments of the present application, the first return air pipe includes a main pipe and two branch pipes arranged at one end of the main pipe, each branch pipe is connected to a return air joint, a partition is arranged in the main pipe, the partition divides the inner cavity of the main pipe into two chambers, one branch pipe is connected to one chamber, and the end of the chamber away from the branch pipe is the air inlet end.

[0010] In some embodiments of the present application, the first air return pipe is a plastic pipe, and the branch pipe is connected to the air return connector by a snap-fit ​​connection.

[0011] In some embodiments of the present application, a connecting piece is further provided on the side wall of the tank body, and the connecting piece is respectively connected to the two air inlet ends of the first air return pipe.

[0012] In some embodiments of the present application, the compressor integrated system also includes a shell and a second return air pipe, the shell has relative top and bottom ends along its own height direction, a return air port is provided at the top, the compressor body is arranged in the shell along the vertical direction, one end of the second return air pipe extends from the return air port, and the other end of the second return air pipe is located in the shell and is spaced apart from the two air inlet ends.

[0013] In some embodiments of the present application, an oil pool is provided on the inner side of the bottom end of the shell; the compressor integrated system also includes an oil return capillary, one end of which is connected to the first air return pipe, and the other end of the oil return capillary extends into the oil pool; or, an oil return hole is provided on the side of the first air return pipe toward the bottom end, and the oil return hole is located within the liquid surface of the oil pool.

[0014] In some embodiments of the present application, the second air return pipe is a straight pipe or a curved pipe.

[0015] In some embodiments of the present application, in the circumferential direction of the shell, an end of the second air return pipe located inside the shell and an end of the first air return pipe away from the air return joint are staggered.

[0016] In some embodiments of the present application, the compressor integrated system also includes an exhaust pipe, an exhaust port is provided at the top of the shell, and an exhaust joint is provided at the top of the tank body. One end of the exhaust pipe is connected to the exhaust joint, and the other end of the exhaust pipe extends from the exhaust port.

[0017] A second aspect of the present application provides an air-conditioning outdoor unit, comprising a compressor integrated system according to an embodiment of the present application.

[0018] A third aspect of the present application provides a heating, ventilation, and air conditioning (HVAC) device, including an indoor air conditioner and the outdoor air conditioner of the embodiments of the present application. The outdoor air conditioner is connected to the indoor air conditioner through pipelines.

[0019] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the following specific embodiments of the present application are specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them:

[0021] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them:

[0022] Figure 1 is a schematic structural diagram of a compressor integration system according to an embodiment of the present application;

[0023] Figure 2 is a schematic structural diagram of a compressor integration system according to another embodiment of the present application;

[0024] Figure 3 is a schematic structural diagram of a compressor integration system according to another embodiment of the present application;

[0025] Figure 4 is Figure 3 a schematic assembly structure diagram of the first suction pipe and the suction joint shown;

[0026] Figure 5 is a schematic structural diagram of a compressor integration system according to another embodiment of the present application;

[0027] Figure 6 is Figure 5 a partial sectional view of the compressor integration system shown;

[0028] Figure 7 is Figure 5 a top view of the compressor integration system shown;

[0029] Figure 8 is Figure 6Schematic structural diagram of the exhaust pipe in the compressor integration system shown;

[0030] Figure 9 Schematic structural diagram of the outdoor unit of the air conditioner according to an embodiment of the present application;

[0031] Figure 10 Schematic electrical structure diagram of the heating and ventilation equipment according to an embodiment of the present application.

[0032] The reference numerals in the drawings are represented as follows:

[0033] 1000, heating and ventilation equipment;

[0034] 100, outdoor unit of the air conditioner; 10, compressor integration system; 20, chassis; 40, outdoor heat exchanger; 50, fan;

[0035] 60, four-way valve; 61, first valve port; 62, second valve port; 63, third valve port; 64, fourth valve port;

[0036] 200, indoor unit of the air conditioner; 210, indoor heat exchanger;

[0037] 1, housing; 11, suction port; 12, exhaust port; 13, top end; 14, bottom end; 15, oil sump;

[0038] 2, compressor body; 21, tank body; 22, suction joint; 221, U-shaped pin; 23, exhaust joint; 24, connecting piece;

[0039] 3, first suction pipe; 3a, intake end; 31, first pipe section; 32, second pipe section; 321, oil return hole; 33, straight pipe section; 34, inclined pipe section; 35, main pipe; 36, branch pipe; 361, interface end; 362, through hole; 363, buckle; 37, partition; 38, chamber;

[0040] 4, second suction pipe; 5, exhaust pipe; 51, first pipe section; 52, second pipe section; 53, third pipe section; 54, fourth pipe section; 55, fifth pipe section; 6, oil return capillary tube. Detailed implementation manners

[0041] Hereinafter, the exemplary embodiments of the present application will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be completely conveyed to those skilled in the art.

[0042] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0043] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly dictates otherwise, terms such as "first", "second", and other numerical terms when used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0044] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures, such as "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature will then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can include both an orientation above and below. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are to be interpreted accordingly.

[0045] In the related art, the compressor system of an air conditioner outdoor unit includes a compressor, a low-pressure tank, a gas-liquid separator, connecting pipelines, etc. Among them, a twin-rotor compressor arranges two cylinder assemblies distributed 180 degrees on the same crankshaft, overcoming a series of problems such as capacity limitation caused by unbalanced load torque of a single-rotor compressor and poor cylinder sealing. The compression chamber of the cylinder assembly is communicated with a suction connection, and refrigerant is introduced into the corresponding compression chamber through a suction pipeline. Since there is only one suction port in the suction pipeline, the two suction connections are prone to gas robbing problems, resulting in low suction efficiency of the compressor.

[0046] Therefore, the embodiment of the present application provides a compressor integrated system 10, which can effectively reduce the possibility of gas robbing between the two suction connections and improve the suction efficiency of the compressor.

[0047] Figure 1 It is a schematic structural diagram of the compressor integrated system according to an embodiment of the present application.

[0048] Referring to Figure 1 , a compressor integrated system 10 provided by the embodiment of the present application includes a compressor body 2 and a first suction pipeline 3.

[0049] The compressor body 2 includes a tank body 21 and two compression chambers arranged in the tank body 21. The two compression chambers are arranged at intervals along the axial direction of the tank body 21. Two suction connections 22 communicated with the two compression chambers respectively are arranged on the side wall of the tank body 21. One end of the first suction pipeline 3 is connected to the two suction connections 22, and the other end of the first suction pipeline 3 has two intake ends 3a.

[0050] The compressor body 2 further includes two cylinder assemblies arranged in the tank body 21. The two cylinder assemblies are arranged at intervals along the axial direction of the tank body 21. Each cylinder assembly forms a compression chamber, and a rotor and a piston (not shown in the figure) are arranged in the compression chamber. The rotor is used to drive the piston to compress gas to do work. Two suction connections 22 communicated with the two compression chambers respectively are arranged on the side wall of the tank body 21. One end of the first suction pipeline 3 is respectively connected to the two suction connections 22, and the other end of the first suction pipeline 3 has two intake ends 3a. Since the first suction pipeline 3 has two intake ends 3a, the two intake ends 3a can simultaneously inhale low-temperature gaseous refrigerant under the negative pressure of the compressor body 2, and then the low-temperature gaseous refrigerant enters the two compression chambers of the compressor body 2 through the two suction connections 22 respectively, so that the two compression chambers can alternately compress the low-temperature gaseous refrigerant to generate high-temperature and high-pressure gaseous refrigerant. Since the intake volume of the low-temperature gaseous refrigerant is sufficient, the possibility of gas robbing between the two compression chambers can be reduced, and the suction efficiency of the compressor body 2 can be improved.

[0051] According to the compressor integration system 10 provided by the embodiments of the present application, the compressor body 2 includes a tank body 21 and two compression chambers arranged in the tank body 21. Two gas return joints 22 communicating with the two compression chambers respectively are arranged on the side wall of the tank body 21. One end of the first gas return pipe 3 is connected to the two gas return joints 22, and the other end of the first gas return pipe 3 has two air inlet ends, which can provide sufficient air intake for the first gas return pipe 3 through the two air inlet ends, effectively reducing the possibility of air robbing at the two gas return joints 22 and improving the gas return efficiency of the compressor.

[0052] In some embodiments, the first gas return pipe 3 includes two first pipe segments 31 arranged at intervals and a second pipe segment 32 connected between the ends of the two first pipe segments 31. The first pipe segment 31 is a straight segment parallel to the axial direction of the tank body 21, and the second pipe segment 32 is an arc segment. The two gas return joints 22 are arranged axially aligned along the tank body 21 and are respectively communicated with one of the first pipe segments 31. The end of the first pipe segment 31 far from the second pipe segment 32 is the air inlet end 3a.

[0053] As Figure 1 shown, the first gas return pipe 3 is of a "U" - shaped structure, which includes two first pipe segments 31 arranged at intervals and a second pipe segment 32 connected between the ends of the two first pipe segments 31. The end of the first pipe segment 31 far from the second pipe segment 32 is the air inlet end 3a. The two air inlet ends 3a simultaneously guide the inhaled gaseous refrigerant into the two gas return joints 22 of one of the first pipe segments 31, so as to continuously provide sufficient air intake, ensure smooth gas return, avoid air robbing in the two compression chambers, and further improve the gas return efficiency of the compressor body 2. The second pipe segment 32 is an arc segment, which can reduce the resistance when the gaseous refrigerant flows from one first pipe segment 31 to the other first pipe segment 31. In addition, the two gas return joints 22 are arranged axially aligned along the tank body 21, and the two gas return joints 22 are respectively communicated with one of the first pipe segments 31, which can reduce the overall size and occupied space of the first gas return pipe 3, further reduce the resistance during the flow of the gaseous refrigerant in the first gas return pipe 3, and improve the gas return efficiency of the compressor body 2.

[0054] Optionally, the first gas return pipe 3 is a metal pipe, such as a copper pipe. One first pipe segment 31 and the second pipe segment 32 are integrally formed, while the other first pipe segment 31 is separately manufactured, and two through - holes are arranged on this first pipe segment 31. The two gas return joints 22 are respectively welded and connected to the two through - holes, and then this first pipe segment 31 is welded and connected to the other end of the second pipe segment 32.

[0055] Figure 2 It is a schematic structural diagram of the compressor integration system according to another embodiment of the present application.

[0056] In some embodiments, the first return air pipe 3 includes two pipe segments arranged separately. The pipe segment includes a straight pipe segment 33 and an inclined pipe segment 34 connected in sequence. The straight pipe segment 33 is arranged parallel to the axial direction of the tank body 21. The straight pipe segments 33 of the two pipe segments are arranged at intervals. The inclined pipe segments 34 of the two pipe segments are arranged at a preset angle. The two return air connectors 22 are arranged axially aligned along the tank body 21. The inclined pipe segment 34 of one pipe segment is connected to one return air connector 22. The end of the straight pipe segment 33 away from the inclined pipe segment 34 is the air inlet end 3a.

[0057] As Figure 2 shown, the first return air pipe 3 is two pipe segments arranged in a "U" shape. Each pipe segment includes a straight pipe segment 33 and an inclined pipe segment 34 connected in sequence. The end of the straight pipe segment 33 away from the inclined pipe segment 34 is the air inlet end 3a. The two air inlet ends 3a simultaneously guide the inhaled gaseous refrigerant into one return air connector 22 of one first pipe segment 31 respectively, realizing independent air supply while increasing the air intake volume, ensuring sufficient air supply for each compression chamber, smooth return air, and avoiding air grabbing between the two compression chambers, thereby improving the return air efficiency of the compressor body 2. The two return air connectors 22 are arranged axially aligned along the tank body 21, so that the inclined pipe segments 34 of the two pipe segments are respectively inclined towards the return air connectors 22, avoiding structural interference, and being connected to the two return air connectors 22 in a one-to-one correspondence, which can reduce the overall size and occupied space of the first return air pipe 3, reduce the resistance during the flow of the gaseous refrigerant in the first return air pipe 3, and is beneficial to improving the return air efficiency of the compressor body 2.

[0058] Optionally, the first return air pipe 3 is a metal pipe, such as a copper pipe. Compared with the first return air pipe 3 with a "U" shape structure, it has a simple structure, each pipe segment is independently manufactured, and the cost is relatively low.

[0059] Figure 3 This is a schematic structural diagram of a compressor integration system according to another embodiment of the present application.

[0060] In some embodiments, the first return air pipe 3 includes a main pipe 35 and two branch pipes 36 arranged at one end of the main pipe 35. Each branch pipe 36 is connected to one return air connector 22. A partition 37 is arranged in the main pipe 35. The partition 37 divides the inner cavity of the main pipe 35 into two chambers 38. One branch pipe 36 communicates with one chamber 38. The end of the chamber 38 away from the branch pipe 36 is the air inlet end 3a.

[0061] As Figure 3As shown, the first return air pipe 3 is of an "F" shape, which includes a main pipe 35 and two branch pipes 36 provided at one end of the main pipe 35. Each branch pipe 36 is connected to a return air joint 22, and the main pipe 35 is separated by a partition 37 into two chambers 38. One branch pipe 36 communicates with one chamber 38, so that each chamber 38 can independently supply air to the compression chambers communicated with their respective return air joints 22, avoiding air grabbing between the two compression chambers, thereby improving the return air efficiency of the compressor body 2. In addition, compared with the "U"-shaped first return air pipe 3, the overall size is shorter and the occupied space is smaller, further reducing the resistance during the flow of the gaseous refrigerant in the first return air pipe 3, which is beneficial to improving the return air efficiency of the compressor body 2.

[0062] Since the structure of the first return air pipe 3 in this embodiment is relatively complex, the first return air pipe 3 can be a plastic pipe and is formed by an injection molding process, which is convenient for mass production.

[0063] Figure 4 For Figure 3 the schematic assembly structure diagram of the first return air pipe and the return air joint shown.

[0064] In some embodiments, the first return air pipe 3 is a plastic pipe, and the branch pipe 36 and the return air joint 22 are connected by snap connection.

[0065] As Figure 4 shown, each branch pipe 36 of the first return air pipe 3 is connected to a return air joint 22 by snap connection, which is convenient for assembly and disassembly. Exemplarily, the return air joint 22 is provided with a U-shaped pin 221 along its radial direction. The interface end 361 of the branch pipe 36 is sleeved on the outer peripheral side of the return air joint 22, and the interface end 361 is provided with a through hole 362, so that the U-shaped pin can pass through the through hole 362 to be connected to the return air joint 22 to limit the axial movement of the branch pipe 36 relative to the return air joint 22. At the same time, a buckle 363 is provided on one side of the interface end 361, and the buckle 363 can be snapped onto the U-shaped pin to prevent the branch pipe 36 from rotating relative to the return air joint 22, thereby detachably connecting the branch pipe 36 and the return air joint 22.

[0066] In some embodiments, a connecting member 24 is further provided on the side wall of the tank body 21, and the connecting member 24 is respectively connected to the two air inlet ends 3a of the first return air pipe 3.

[0067] As Figures 1 to 3As shown, a connector 24 may be provided on the side of the tank body 21, one end of the connector 24 is connected to the outer peripheral surface of the tank body 21, and the other end of the connector 24 is connected to the two air inlet ends 3a of the first air return pipe 3, so as to reduce the vibration of the first air return pipe 3 and reduce the noise. The shape of the connector 24 is not limited, as long as it can fix the two air inlet ends 3a of the first air return pipe 3. One end of the connector 24 may be welded to the side of the tank body 21, and one end of the connector 24 may also be connected to the side of the tank body 21 by fasteners such as screws and pins. The threaded hole or pin hole of the tank body 21 is a blind hole to ensure the airtightness of the tank body 21.

[0068] Figure 5 This is a schematic structural diagram of a compressor integration system according to another embodiment of the present application. Figure 6 for Figure 5 A partial cross-sectional view of the compressor integration system is shown.

[0069] like Figure 5 and Figure 6 As shown, the compressor integrated system 10 of the present application embodiment is the same as the above Figures 1 to 3 The compressor integrated system 10 shown has a similar structure, except that the compressor integrated system 10 further includes a shell 1 and a second air return pipe 4 , and the compressor body 2 is vertically arranged in the shell 1 .

[0070] Specifically, the compressor integrated system 10 also includes a shell 1 and a second air return pipe 4. The shell 1 has a top end 13 and a bottom end 14 relative to each other along its height direction. The top end 13 is provided with an air return port 11. The compressor body 2 is arranged in the shell 1 along the vertical direction. One end of the second air return pipe 4 extends from the air return port 11. The other end of the second air return pipe 4 is located in the shell 1 and is spaced apart from the two air inlet ends 3a. The shell 1 may include a cylinder, a cover shell and a bottom shell that are separately arranged. The top end 13 may be the end surface of the cover shell that covers the cylinder, and the bottom end 14 may be the bottom surface of the bottom shell that covers the cylinder; the cylinder and the cover shell may also be an integral structure, and the top end 13 is the top surface of the cylinder; the cylinder and the bottom shell may also be an integral structure, and the bottom end 14 is the bottom surface of the cylinder.

[0071] In the related art, a low-pressure tank is generally used to store a refrigerant refrigerant with a certain volume, and the volume is about 2L to 4L. The gas-liquid separator is used to separate the gaseous refrigerant and the liquid refrigerant in the gaseous mixed refrigerant, and the volume is about 1L. In this embodiment, the housing 1 can integrate the gas-liquid separator and the low-pressure tank into one body. The compressor body 2 is placed in the housing 1, and the volume of the housing 1 is about 4L to 5L. Alternatively, the low-pressure tank is omitted, and the housing 1 is only used as the function of the gas-liquid separator, and the volume is greater than 1L and less than 5L, or the size of the volume is determined according to the use scenario, as long as the housing 1 can accommodate the compressor body 2. Thus, in the embodiment of the present application, the compressor body 2, the gas-liquid separator, the low-pressure tank and the related pipelines are integrated in the housing 1, or the compressor body 2, the gas-liquid separator and the related pipelines are integrated in the housing 1. The compressor body 2 can stand upright in the housing 1 or be placed horizontally in the housing 1, with a compact structure and small occupied space.

[0072] Further, one end of the first return air pipe 3 is respectively connected to the two return air joints 22, and the other end of the first return air pipe 3 has two air inlet ends 3a, and the air inlet ends 3a extend towards the top end 13. The structure of the first return air pipe 3 can refer to Figures 1 to 3 the structure shown. One end of the second return air pipe 4 extends out of the return air port 11, and the other end of the second return air pipe 4 is located in the housing 1 and is arranged at an interval from the two air inlet ends 3a. In this way, the low-temperature gas-liquid mixed refrigerant entering from the second return air pipe 4 of the return air port 11 is separated into gas and liquid under the action of its own gravity. Since the density of the gaseous refrigerant is less than that of the liquid refrigerant, the liquid refrigerant will fall to the bottom end 14 of the housing 1, while the low-temperature gaseous refrigerant remains at the top end 13 of the housing 1. Since the first return air pipe 3 has two air inlet ends 3a, the two air inlet ends 3a can simultaneously suck in the low-temperature gaseous refrigerant under the negative pressure action of the compressor body 2, and then the low-temperature gaseous refrigerant enters the two compression chambers of the compressor body 2 through the two return air joints 22 respectively, so that the two compression chambers can alternately compress the low-temperature gaseous refrigerant to generate high-temperature and high-pressure gaseous refrigerant. Since the intake amount of the low-temperature gaseous refrigerant is sufficient, the possibility of the two compression chambers robbing air can be reduced, and the return air efficiency of the compressor body 2 can be improved.

[0073] In addition, one end of the second return air pipe 4 extends out of the return air port 11, and the other end of the second return air pipe 4 is located inside the housing 1 and is arranged at an interval from the intake end 3a of the first return air pipe 3. Since the first return air pipe 3 and the second return air pipe 4 are separated and arranged at an interval, on the one hand, the overall length of the return air pipeline can be shortened, the flow resistance in the return air pipeline can be effectively reduced, which is beneficial to improving the return air efficiency of the compressor body 2; on the other hand, when the compressor body 2 operates, the inertial force and inertial moment of high-speed rotation cause the vibration of the compressor body 2, and the vibration is transmitted to the first return air pipe 3, so that the vibration between the compressor body 2 and the first return air pipe 3 gradually dissipates and attenuates in the housing 1 and will not be transmitted to the second return air pipe 4 connected to the housing 1, thereby greatly reducing the low-frequency vibration and noise and improving the user's listening experience.

[0074] In some embodiments, an oil sump 15 is provided inside the bottom end 14 of the housing 1, and the compressor integrated system 10 further includes an oil return capillary 6. One end of the oil return capillary 6 is communicated with the first return air pipe 3, and the other end of the oil return capillary 6 extends into the oil sump 15; alternatively, an oil return hole 321 is provided on the side of the first return air pipe 3 facing the bottom end 14, and the oil return hole 321 is located within the liquid level of the oil sump.

[0075] As Figure 6 shown, an oil sump 15 is provided at the bottom end 14 of the housing 1, and the engine oil in the oil sump 15 is used to lubricate components such as the rotor of the cylinder assembly. During the process of the compressor body 2 discharging high-temperature and high-pressure gaseous refrigerant, it inevitably takes away part of the atomized engine oil, resulting in a reduction in the engine oil in the compressor body 2. If there is too much engine oil in the refrigerant in the circulation loop, it may cause a decrease in the refrigeration capacity of the system.

[0076] For Figure 1 the compressor integrated system 10 shown, the first return air pipe 3 is of a "U" - shaped structure, and an oil hole 321 is provided on the second pipe section 32 of the first return air pipe 3, and the oil return hole 321 is located within the liquid level of the oil sump. In this way, in the gas - liquid mixed refrigerant entering from the second return air pipe 4, the density of the engine oil is greater than that of the liquid refrigerant, and the density of the liquid refrigerant is greater than that of the gaseous refrigerant. Therefore, the refrigerant will be stratified under the action of its own gravity to separate the engine oil, liquid refrigerant and gaseous refrigerant, and the engine oil will fall into the oil sump 15 at the bottom layer of the housing 1. And the oil return hole 321 can introduce the engine oil in the oil sump into the compressor body 2 for oil replenishment, realizing the recycling of the engine oil.

[0077] For Figure 2For the compressor integration system 10 shown, the first suction pipe 3 is composed of two pipe segments arranged in a "U" shape. The compressor integration system 10 is also provided with two additional oil return capillary tubes 6. The inclined pipe segment 34 is provided with an oil hole (not shown in the figure). One end of the oil return capillary tube 6 is connected to the oil hole, and the other end of the oil return capillary tube 6 extends into the oil sump 15 at the bottom end 14 of the housing 1. In this way, in the gas-liquid mixed refrigerant entering from the second suction pipe 4, the density of the lubricating oil is greater than that of the liquid refrigerant, and the density of the liquid refrigerant is greater than that of the gaseous refrigerant. Therefore, the refrigerant will be stratified under the action of its own gravity to separate the lubricating oil, liquid refrigerant and gaseous refrigerant, and the lubricating oil will fall into the oil sump 15 at the bottom layer of the housing 1. The oil return capillary tube 6 can introduce the lubricating oil in the oil sump into the compressor body 2 for oil replenishment, realizing the recycling of the lubricating oil. The diameter of the oil return capillary tube 6 is generally 0.5 mm to 1.5 mm. Compared with the related art of separately adding an oil return device, the oil return capillary tube 6 reduces the manufacturing cost while realizing the oil separation function and improves the integration degree of the system.

[0078] Regarding Figure 3 For the compressor integration system 10 shown, the first suction pipe 3 has an "F" shape. The compressor integration system 10 is also provided with two additional oil return capillary tubes 6. The branch pipe 36 is provided with an oil hole (not shown in the figure). One end of the oil return capillary tube 6 is connected to the oil hole, and the other end of the oil return capillary tube 6 extends into the oil sump 15 at the bottom end 14 of the housing 1. In this way, in the gas-liquid mixed refrigerant entering from the second suction pipe 4, the density of the lubricating oil is greater than that of the liquid refrigerant, and the density of the liquid refrigerant is greater than that of the gaseous refrigerant. Therefore, the refrigerant will be stratified under the action of its own gravity to separate the lubricating oil, liquid refrigerant and gaseous refrigerant, and the lubricating oil will fall into the oil sump 15 at the bottom layer of the housing 1. The oil return capillary tube 6 can introduce the lubricating oil in the oil sump into the compressor body 2 for oil replenishment, realizing the recycling of the lubricating oil. The diameter of the oil return capillary tube 6 is generally 0.5 mm to 1.5 mm. Compared with the related art of separately adding an oil return device, the oil return capillary tube 6 reduces the manufacturing cost while realizing the oil separation function and improves the integration degree of the system.

[0079] In some embodiments, the second suction pipe 4 is a straight pipe or a bent pipe.

[0080] The second suction pipe 4 can be a straight pipe, which has a simple structure. The second suction pipe 4 can also be a bent pipe. Exemplarily, such as Figure 6As shown, the second return air pipe 4 is an L-shaped pipe. One end of the second return air pipe 4 extends out from the air return port 11, and the other end of the second return air pipe 4 is located inside the housing 1 and extends towards the inner wall of the housing 1. In this way, the gas-liquid mixed refrigerant entering from the second return air pipe 4 changes from vertical movement to tangential movement along the side wall of the housing 1 when entering the inner cavity of the housing 1, so as to quickly form a vortex in the inner cavity of the housing 1. Under the action of centrifugal force, the liquid refrigerant with a larger density will be thrown to the inner wall of the housing 1, while the gas refrigerant with a smaller density will float inside the top end 13 of the housing 1, improving the efficiency of gas-liquid separation.

[0081] Figure 7 is Figure 5 The top view of the compressor integrated system shown.

[0082] In some embodiments, in the circumferential direction of the housing 1, the end of the second return air pipe 4 located inside the housing 1 is arranged staggeredly with respect to the end of the first return air pipe 3 far from the air return joint 22.

[0083] Refer to Figure 7 , the low-temperature gas-liquid mixed refrigerant entering the housing 1 from the second return air pipe 4 contains liquid refrigerant. The end of the second return air pipe 4 located inside the housing 1 is arranged staggeredly rather than directly opposite to the air return end of the first return air pipe 3, which can prevent the liquid refrigerant from entering the first return air pipe 3 from the air return end under the action of its own gravity, reducing the possibility of liquid hammer problems occurring in the compressor body 2. Exemplarily, a first connection line is formed between the end of the second return air pipe 4 located inside the housing 1 and the central axis of the housing 1, and a second connection line is formed between the air return end of the first return air pipe 3 and the central axis of the housing 1. The first connection line and the second connection line are arranged at a preset angle θ. The larger the preset angle θ, the larger the stagger angle between the end of the second return air pipe 4 located inside the housing 1 and the air return end of the first return air pipe 3. When the preset angle θ = 180°, the possibility of liquid hammer problems occurring in the compressor body 2 is the smallest.

[0084] Figure 8 is Figure 6 The structural schematic diagram of the exhaust pipe in the compressor integrated system shown.

[0085] In some embodiments, the compressor integrated system 10 further includes an exhaust pipe 5. An exhaust port 12 is further provided at the top end 13 of the housing 1, and an exhaust joint 23 is further provided at the top of the tank body 21. One end of the exhaust pipe 5 is connected to the exhaust joint 23, and the other end of the exhaust pipe 5 extends out from the exhaust port 12.

[0086] The structural form of the exhaust pipe 5 is not limited and can be a straight pipe or a bent pipe. The position where the exhaust pipe 5 is connected to the exhaust joint 23 or other pipelines can be a rigid pipe, and the rest is a metal braided hose. The exhaust pipe 5 can also be an overall metal braided hose. The metal braided mesh can be woven into a mesh structure by metal wires of stainless steel, aluminum or other alloys, combining the characteristics of metal materials and the advantages of the braided structure, having excellent high-temperature resistance and corrosion resistance. Through a multi-directional braiding process (such as hexagonal mesh holes), while maintaining the compressive strength (MPa level), it has remarkable flexibility. Metal wires with a high elastic modulus can absorb energy through small deformations during vibration, reducing the risk of solder joint fatigue. After actual product verification, the metal braided hose is still intact after 100,000 vibration cycles.

[0087] The exhaust pipe 5 can also be a rubber hose, and its material can include nitrile rubber (NBR), ethylene propylene diene monomer rubber (EPDM), fluororubber (FKM), chloroprene rubber (CR), etc. It is light in weight and flexible, and can better absorb vibration energy. Among them, nitrile rubber and fluororubber have relatively excellent oil resistance as the exhaust pipe 5, but the cost is relatively high; while ethylene propylene diene monomer rubber and chloroprene rubber have limited oil resistance due to their own properties and are not as good as the former two, and there may be a risk of leakage during long-term use, and the cost is relatively low. Since in this embodiment, the compressor body 2 and the exhaust pipe 5 are both placed in the housing 1, even if there is a problem of refrigerant leakage in the exhaust pipe 5, the refrigerant can be retained in the housing 1 and be sucked into the tank body 21 of the compressor body 2 by the suction pipe and continue to circulate and be used without waste. In actual use, an appropriate rubber material can be selected according to the application occasion to eliminate the influence of vibration stress on the exhaust pipe 5 and improve the service life of the exhaust pipe 5.

[0088] Exemplarily, as Figure 8 shown, the exhaust pipe 5 is a bent pipe, its structure is flexible, and the material can be a metal pipe, which can reduce vibration stress while having a certain structural strength to prevent being scratched during transportation or use and affecting the service life. For example, the exhaust pipe 5 can be a copper pipe, and the copper pipe has good welding performance, which is convenient for connecting with other pipelines. The exhaust pipe 5 can also be a stainless steel pipe, and a copper section can be provided at both ends of the stainless steel pipe for welding connection with other pipelines.

[0089] Optionally, the exhaust pipe 5 includes a plurality of pipe segments sequentially connected in the space between the outer wall of the tank body 21 and the inner wall of the housing 1. Adjacent two pipe segments are bent at a preset angle, one of the pipe segments is connected to the exhaust joint 23, and the other pipe segment extends out from the exhaust port 12.

[0090] As Figure 8As shown in the figure, the exhaust pipe 5 has a first pipe section 51, a second pipe section 52, a third pipe section 53, a fourth pipe section 54, and a fifth pipe section 55 that are connected in sequence. The adjacent two pipe sections are bent at a 90° angle. The first pipe section 51 extends a first length toward the outer wall of the tank body 21 after being led out from the exhaust joint 23. The second pipe section 52 is bent 90° from the first pipe section 51 and extends a second length toward the bottom end 14. The third pipe section 53 is bent 90° from the second pipe section 52 and extends a third length along a direction parallel to the bottom end 14. The fourth pipe section 54 is bent 90° from the third pipe section 53 and extends a fourth length toward the top end 13, and then is bent and extended a fifth length in the direction of the exhaust joint 23 again. The fifth pipe section 55 is bent 90° from the fourth pipe section 54 and finally extends out from the exhaust port 12. Thus, the exhaust pipe 5 has high flexibility in structure, and the vibration received by the exhaust pipe 5 is dissipated through the movement between the pipe sections, reducing the vibration stress and increasing the service life. Since both the first pipe section 51 and the fifth pipe section 55 are directly or indirectly connected to the compressor body 2, and the tangential vibration of the compressor body 2 during operation is relatively large, the vibration stress received by the first pipe section 51 and the fifth pipe section 55 is relatively large. The first pipe section 51 and the fifth pipe section 55 can be made of copper pipes or stainless steel pipes to improve the structural strength. The remaining second pipe section 52, third pipe section 53, and fourth pipe section 54 are relatively free pipe sections and are all set as metal braided mesh hoses, which can greatly reduce the vibration stress.

[0091] Since the cost of the metal braided mesh hose is higher than that of the ordinary metal pipe, in this embodiment, the metal braided mesh hose and the ordinary metal pipe are used in combination, which can not only reduce the vibration stress of the exhaust pipe 5, but also save the manufacturing cost.

[0092] Figure 9 It is a schematic exploded view of the outdoor unit of the air conditioner according to the embodiment of the present application. Figure 10 It is a schematic electrical structure diagram of the heating and ventilation equipment according to the embodiment of the present application.

[0093] Refer to Figure 9 , the embodiment of the present application provides an outdoor unit 100 of an air conditioner, including the compressor integration system 10 of each embodiment of the present application. The outdoor unit 100 of the air conditioner further includes a chassis 20 and an outdoor heat exchanger 40, a fan 50, a four-way valve 60, and a circulation loop disposed on the chassis 20. The compressor integration system 10 is disposed on one side of the chassis 20.

[0094] Refer to Figure 10 , the embodiment of the present application provides a heating and ventilation equipment 1000, including an indoor unit 200 of an air conditioner and the outdoor unit 100 of the air conditioner according to the embodiment of the present application. The outdoor unit 100 of the air conditioner is connected to the indoor unit 200 of the air conditioner through a pipeline.

[0095] The air conditioner indoor unit 200 is installed indoors, and the air conditioner outdoor unit 100 is installed outdoors for refrigeration or heating. The refrigerant is transported through pipes and exchanges heat with the indoor air and the outdoor air respectively. The air conditioner indoor unit 200 is used to deliver cold air or hot air into the room to achieve the effect of cooling or heating.

[0096] As Figure 8 and Figure 9 shown, the four-way valve 60 includes a first valve port 61, a second valve port 62, a third valve port 63 and a fourth valve port 64. The first valve port 61 is communicated with the exhaust pipe 5 of the compressor body 2, the third valve port 63 is communicated with the second return pipe 4 of the compressor body 2, the second valve port 62 is communicated with the inlet of the outdoor heat exchanger 40, and the fourth valve port 64 is communicated with the outlet of the indoor heat exchanger 210.

[0097] Thus, the four-way valve 60 has two working states: when the four-way valve 60 is powered off, the heating and ventilation equipment 1000 operates normally and enters the refrigeration cycle mode. At this time, the first valve port 61 can be conducted with the second valve port 62, and the third valve port 63 is conducted with the fourth valve port 64, and the refrigerant flows in the first direction in the circulation loop. After the refrigerant is discharged from the exhaust pipe 5 of the compressor body 2, it flows through the four-way valve 60 to the outdoor heat exchanger 40 and the indoor heat exchanger 210 of the air conditioner outdoor unit 100 in sequence. At this time, the outdoor heat exchanger 40 is used as a condenser to condense the high-temperature and high-pressure refrigerant discharged from the compressor body 2, and the fan 50 can improve the heat exchange efficiency of the outdoor heat exchanger 40. The indoor heat exchanger 210 is used as an evaporator, and the cold refrigerant exchanges heat with the indoor air to output cold air into the room. Then the refrigerant returns to the compressor body 2 through the second return pipe 4 and the first return pipe 3.

[0098] When the four-way valve 60 is powered on, the heating and ventilation equipment 1000 enters the defrosting cycle mode. At this time, the first valve port 61 can be conducted with the fourth valve port 64, and the second valve port 62 is conducted with the third valve port 63. The refrigerant flows in the second direction in the circulation loop, and the second direction is opposite to the first direction. After the refrigerant is discharged from the exhaust pipe 5 of the compressor body 2, it flows through the four-way valve 60 to the indoor heat exchanger 210 and the outdoor heat exchanger 40 in sequence. At this time, the indoor heat exchanger 210 is used as a condenser, and the high-temperature and high-pressure refrigerant discharged from the exhaust pipe 5 of the compressor body 2 exchanges heat with the indoor heat exchanger 210 to output hot air into the room. The outdoor heat exchanger 40 is used as an evaporator, and then the refrigerant returns to the compressor body 2 through the second return pipe 4 and the first return pipe 3.

[0099] According to the air conditioner outdoor unit 100 and the heating and ventilation equipment 1000 provided by the embodiments of the present application, the compressor integration system 10 of the embodiments of the present application is adopted. The compressor body 2 includes a tank body 21 and two compression chambers arranged in the tank body 21. Two gas return joints 22 respectively communicating with the two compression chambers are arranged on the side wall of the tank body 21. One end of the first gas return pipe 3 is connected to the two gas return joints 22, and the other end of the first gas return pipe 3 has two air inlet ends 3a. By providing sufficient air intake volume for the first gas return pipe 3 through the two air inlet ends 3a, the possibility of gas robbing at the two gas return joints 22 can be effectively reduced, and the gas return efficiency of the compressor body 2 can be improved.

[0100] As used herein, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0101] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A compressor integrated system, characterized in that, include: The compressor body comprises a tank body and two compression chambers arranged in the tank body, wherein the two compression chambers are arranged at intervals along the axial direction of the tank body, and two return air joints respectively connected to the two compression chambers are arranged on the side wall of the tank body; A first air return pipe, one end of which is connected to the two air return joints, and the other end of which has two air inlet ends.

2. The compressor integration system according to claim 1, characterized in that, The first air return pipe includes two first pipe sections arranged at intervals and a second pipe section connected between the ends of the two first pipe sections, the first pipe section is a straight line section parallel to the axial direction of the tank body, the second pipe section is an arc section, the two air return joints are aligned along the axial direction of the tank body, and are respectively connected to one of the first pipe sections, and the end of the first pipe section away from the second pipe section is the air inlet end.

3. The compressor integration system according to claim 1, wherein The first air return pipe includes two pipe sections that are separately arranged, and the pipe sections include a straight pipe section and an inclined pipe section that are connected in sequence. The straight pipe section is arranged parallel to the axial direction of the tank body, the straight pipe sections of the two pipe sections are arranged at intervals, and the inclined pipe sections of the two pipe sections are arranged at a preset angle. The two air return joints are arranged to be aligned along the axial direction of the tank body, the inclined pipe section of one pipe section is connected to one air return joint, and the end of the straight pipe section away from the inclined pipe section is the air inlet end.

4. The compressor integration system according to claim 1, characterized in that The first air return pipe includes a main pipe and two branch pipes arranged at one end of the main pipe, each of the branch pipes is connected to one of the air return joints, a partition is arranged in the main pipe, the partition divides the inner cavity of the main pipe into two chambers, one of the branch pipes is connected to one of the chambers, and the end of the chamber away from the branch pipe is the air inlet end.

5. The compressor integration system according to claim 4, characterized in that, The first air return pipe is a plastic pipe, and the branch pipe is connected to the air return joint by a snap connection.

6. The compressor integration system according to any one of claims 1 to 5, characterized in that A connecting piece is also provided on the side wall of the tank body, and the connecting piece is respectively connected to the two air inlet ends of the first air return pipe.

7. The compressor integration system according to any one of claims 1 to 5, characterized in that The compressor integrated system also includes a shell and a second return air pipe, the shell has a relative top and bottom end along its own height direction, the top end is provided with a return air port, the compressor body is arranged in the shell along the vertical direction, one end of the second return air pipe extends out from the return air port, and the other end of the second return air pipe is located in the shell and is spaced apart from the two air inlet ends.

8. The compressor integration system according to claim 7, characterized in that, An oil pool is provided inside the bottom end of the shell; The compressor integrated system also includes an oil return capillary, one end of which is connected to the first air return pipe, and the other end of which extends into the oil pool; alternatively, an oil return hole is provided on one side of the first air return pipe toward the bottom end, and the oil return hole is located within the liquid surface of the oil pool.

9. The compressor integration system according to claim 7, characterized in that The second air return pipe is a straight pipe or a curved pipe.

10. The compressor integration system according to claim 7, characterized in that, In the circumferential direction of the shell, an end of the second air return pipe located in the shell is staggered with an end of the first air return pipe away from the air return joint.

11. The compressor integration system according to claim 7, characterized in that, The compressor integrated system further includes an exhaust pipe. An exhaust port is further provided at the top end of the housing, and an exhaust joint is further provided at the top of the tank body. One end of the exhaust pipe is connected to the exhaust joint, and the other end of the exhaust pipe extends out from the exhaust port.

12. An outdoor unit of an air conditioner, characterized in that, It includes the compressor integrated system according to any one of claims 1-11.

13. A heating, ventilation and air conditioning equipment, characterized in that, It includes an air-conditioning indoor unit and the air-conditioning outdoor unit according to claim 12. The air-conditioning outdoor unit is connected to the air-conditioning indoor unit through a pipeline.

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