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

Abstract

The invention relates to the technical field of air conditioners, and discloses a compressor system, an air conditioner outdoor unit and heating and ventilation equipment.The compressor system comprises a shell, a compressor body and a first air return pipe, the compressor body is arranged in the shell in a suspended mode and comprises a tank body, and an air return connector is arranged on the side wall of the tank body; an installation space is formed between the bottom of the tank body and the bottom of the shell, one end of the first air return pipe is connected with the air return connector, and the other end of the first air return pipe is bent towards the bottom of the shell, passes through the installation space and then extends towards the top of the shell. According to the compressor system, the first air return pipe passes through the mounting space formed between the bottom of the tank body and the bottom of the shell, the length of the first air return pipe is increased, the propagation distance of sound waves in the pipe is increased, the propagation path is prolonged, meanwhile, the longer first air return pipe can reduce the flow speed of gas in the pipe, and the heat dissipation efficiency is improved. The airflow flows more stably in the pipe, the turbulence phenomenon of the airflow is reduced, and the air return noise of the first air return pipe is lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a compressor system, an air conditioning outdoor unit and heating and ventilation equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] During the operation of the compressor, due to the unbalanced mass of the compressor rotor, the inertia force and inertia moment of the high-speed rotation of the compressor cause the compressor to vibrate. This vibration will be transmitted to the return air pipe rigidly connected to the compressor, causing vibration and noise of the gas in the return air pipe. Summary of the Invention

[0004] The purpose of the present invention is to at least solve the problem of high return air noise in the return air duct. This purpose is achieved through the following technical solutions:

[0005] A first aspect of the present invention provides a compressor system, comprising:

[0006] case;

[0007] A compressor body is suspended in the shell, the compressor body includes a tank body, a return air joint is provided on the side wall of the tank body, and an installation space is formed between the bottom of the tank body and the bottom of the shell;

[0008] One end of the first air return pipe is connected to the air return joint, and the other end is bent toward the bottom of the shell and extends toward the top of the shell after passing through the installation space.

[0009] The compressor system of the present invention increases the length of the first return air pipe by allowing the first return air pipe to pass through the installation space formed between the bottom of the tank body and the bottom of the shell. The propagation path of the sound wave in the first return air pipe becomes longer, and after more reflection, refraction and absorption processes, the energy gradually weakens. In addition, the longer first return air pipe can reduce the flow rate of the gas in the pipeline, making the airflow flow more smoothly in the pipe and reducing the turbulence of the airflow, so that the noise intensity reaching the end of the first return air pipe away from the return air joint is greatly reduced, thereby reducing the return air noise of the first return air pipe.

[0010] In addition, the compressor system according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, oil is provided in the installation space, the pipe section of the first return air pipe located in the installation space is the first pipe section, and an oil return hole is provided on the first pipe section, and the oil return hole is located below the liquid level line of the oil.

[0012] In some embodiments of the present invention, the oil return hole is provided at the bottom of the first pipe section and / or at the side of the first pipe section.

[0013] In some embodiments of the present invention, a filtering device is provided at the oil return hole, and the filtering device is used to filter the oil entering the first air return pipe through the oil return hole.

[0014] In some embodiments of the present invention, the filtering device includes a filter element, which is disposed at the oil return hole. The cross-sectional area of the filter element is greater than or equal to the cross-sectional area of the oil return hole.

[0015] In some embodiments of the present invention, the filter device further includes a connecting bracket, one end of the connecting bracket is connected to the oil return hole, and the other end of the connecting bracket is connected to the filter element.

[0016] In some embodiments of the present invention, the first air return pipe further includes a second pipe segment and a third pipe segment, one end of the second pipe segment is connected to the air return joint, the other end of the second pipe segment is connected to the first pipe segment, one end of the third pipe segment is connected to an end of the first pipe segment facing away from the second pipe segment, and the other end of the third pipe segment extends toward the top of the housing;

[0017] An end of the third pipe section away from the first pipe section is located above the height center of the tank body.

[0018] In some embodiments of the present invention, the second pipe segment and the third pipe segment are respectively arranged at opposite ends of the tank body, the axis of the second pipe segment is parallel to the axis of the tank body, the axis of the first pipe segment is perpendicular to the axis of the second pipe segment, and the axis of the third pipe segment is perpendicular to the axis of the first pipe segment.

[0019] In some embodiments of the present invention, there are two return air joints, and the two return air joints are arranged at intervals on the side wall of the tank body along the height direction of the tank body. The number of the second pipe section is one, and one second pipe section is connected to the two return air joints respectively.

[0020] In some embodiments of the present invention, the compressor system also includes a second return air pipe, a return air port is provided on the top of the shell, 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 inside the shell and is spaced apart from the end of the first return air pipe away from the return air joint.

[0021] In some embodiments of the present invention, the compressor system further includes an oil separation device and a pipe assembly, the oil separation device including an oil separation chamber connected to the outside of the top of the shell, an exhaust joint is provided on the top of the tank body, one end of the pipe assembly is connected to the exhaust joint, and the other end of the pipe assembly extends into the oil separation chamber and bends toward the side wall of the oil separation chamber.

[0022] In some embodiments of the present invention, a plane where the axis of one end of the tube assembly extending into the oil separation chamber lies is perpendicular to a wall surface of an inner side wall of the oil separation chamber.

[0023] A second aspect of the present invention provides an air-conditioning outdoor unit, comprising a compressor system as described in any one of the above items.

[0024] A third aspect of the present invention provides a HVAC device, comprising an air-conditioning indoor unit and an air-conditioning outdoor unit as described above, wherein the air-conditioning outdoor unit is connected to the air-conditioning indoor unit via a pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0026] Figure 1 Schematically shows a structural diagram of a compressor system according to an embodiment of the present invention;

[0027] Figure 2 Schematically shows a cross-sectional view of a compressor system according to an embodiment of the present invention Figure 1 ;

[0028] Figure 3 Schematically shows a cross-sectional view of a compressor system according to an embodiment of the present invention Figure 2 ;

[0029] Figure 4 Schematically shows a partial structural diagram of a compressor system according to an embodiment of the present invention Figure 1 ;

[0030] Figure 5 Schematically shows a partial structural diagram of a compressor system according to an embodiment of the present invention Figure 2 ;

[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0032] Figure 7The structural diagram of the HVAC equipment according to the embodiment of the present invention is schematically shown.

[0033] The reference numerals are as follows:

[0034] 1000. HVAC equipment;

[0035] 100, air conditioner outdoor unit; 10, compressor system; 20, outdoor heat exchanger; 30, fan; 200, air conditioner indoor unit; 201, indoor heat exchanger;

[0036] 1. Shell; 11. First subshell; 12. Second subshell; 13. Air return port;

[0037] 2. Compressor body; 21. Tank body; 211. Exhaust connector; 212. Return air connector; 22. Cover; 23. Connector; 24. Muffler; 25. Installation space;

[0038] 3. First air return pipe; 31. First pipe section; 311. Oil return hole; 32. Second pipe section; 33. Third pipe section; 34. Branch pipe; 35. Transition pipe section;

[0039] 4. Filter device; 41. Filter element; 42. Connecting bracket;

[0040] 5. Second air return pipe;

[0041] 61. Oil separation chamber; 611. Exhaust port; 62. First exhaust pipe; 63. Separation pipe; 631. First branch pipe; 632. Second branch pipe; 633. Transition pipe;

[0042] 7. Second exhaust pipe;

[0043] 8. Vibration damping device; 81. Vibration damping plate; 82. Elastic vibration damping member;

[0044] 9. Four-way valve; 91. First interface; 92. Second interface; 93. Third interface; 94. Fourth interface. DETAILED DESCRIPTION

[0045] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, 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 specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0047] Although the terms first, second, third, etc. can be used in the text 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 can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0048] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass 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 over, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0049] During the operation of the compressor, due to the unbalanced mass of the compressor rotor, the inertia force and inertia moment of the high-speed rotation of the compressor cause the compressor to vibrate. This vibration will be transmitted to the return air pipe rigidly connected to the compressor, causing vibration and noise of the gas in the return air pipe.

[0050] In view of this, the present embodiment provides a compressor system 10 which increases the length of the first return air pipe 3 by passing the first return air pipe 3 through the installation space 25 formed between the bottom of the tank body 21 and the bottom of the shell 1, thereby extending the propagation path while reducing the air flow velocity and reducing the return air noise of the first return air pipe 3, thereby solving the above-mentioned technical problems.

[0051] like Figures 1 to 6 As shown, according to an embodiment of the present invention, a compressor system 10 is proposed. The compressor system 10 includes a shell 1 , a compressor body 2 and a first air return pipe 3 .

[0052] The housing 1 has a top and a bottom relative to each other along its height. The housing 1 may include a cylindrical body, a top shell, and a bottom shell, which are separately arranged. The top shell is mounted on the top of the cylindrical body, and the bottom shell is mounted on the bottom of the cylindrical body. The cylindrical body and the top shell may also be an integral structure, with the top of the cylindrical body being the top of the housing 1. The cylindrical body and the bottom shell may also be an integral structure, with the bottom of the cylindrical body being the bottom of the housing 1.

[0053] The compressor body 2 is arranged in the shell 1, and the compressor body 2 includes a tank body 21. The tank body 21 and the shell 1 are both cylindrical structures. A return air joint 212 is provided on the side wall of the tank body 21. The axis of the tank body 21 coincides with the axis of the shell 1, and the axes of both are arranged in the vertical direction. In the vertical direction, there is a certain distance between the outer bottom of the tank body 21 and the inner bottom of the shell 1, so that an installation space 25 for installing the first return air pipe 3 is formed between the bottom of the tank body 21 and the bottom of the shell 1.

[0054] One end of the first air return pipe 3 is connected to the air return connector 212, and the other end extends toward the installation space 25 by a preset length, then extends toward the top of the shell 1. That is, the path of the first air return pipe 3 passes through the installation space 25, rationally utilizing the space between the outer bottom of the tank body 21 and the inner bottom of the shell 1 while extending the length of the first air return pipe 3. The air return connector 212 and the first air return pipe 3 are both made of stainless steel, which has the advantages of high strength, high temperature resistance, and corrosion resistance. One end of the first air return pipe 3 is welded to the air return connector 212, and the other end of the first air return pipe 3 is bent toward the bottom of the shell 1 and extends toward the installation space 25. After passing through the installation space 25, the first air return pipe 3 extends toward the top of the shell 1.

[0055] The compressor system 10 of the present invention increases the length of the first return air pipe 3 by allowing the first return air pipe 3 to pass through the installation space 25 formed between the bottom of the tank body 21 and the bottom of the shell 1. The propagation path of the sound wave in the first return air pipe 3 becomes longer, and after more reflection, refraction and absorption processes, the energy gradually weakens. In addition, the longer first return air pipe 3 can reduce the flow rate of the gas in the pipeline, making the air flow in the pipe flow more smoothly and reducing the turbulence of the air flow, so that the noise intensity reaching the end of the first return air pipe 3 away from the return air joint 212 is greatly reduced, thereby reducing the return air noise of the first return air pipe 3.

[0056] In some embodiments of the present invention, oil is provided within the installation space 25. The first return air pipe 3 comprises a first pipe section 31 within the installation space 25. An oil return hole 311 is provided on the first pipe section 31, and the oil return hole 311 is located below the oil level. Specifically, an oil pool is provided at the bottom of the installation space 25, storing oil. The oil return hole 311 can be provided at the bottom of the first pipe section 31, on the side of the first pipe section 31, or both at the bottom and on the side of the first pipe section 31. In this embodiment, the oil return hole 311 is provided on the side of the first pipe section 31. The bottom of the housing 1 is provided with an oil pool, and the oil return hole 311 on the first pipe section 31 passing through the installation space 25 is immersed in the oil within the oil pool. Due to the provision of the oil return hole 311, when the compressor system 10 is operating, the oil in the oil pool returns to the compressor body 2 through the oil return hole 311, lubricating the compressor body 2 and ensuring the normal operation of the compressor system 10.

[0057] In some embodiments of the present invention, a filter device 4 is provided at the oil return hole 311. The filter device 4 is used to filter the oil entering the first air return pipe 3 through the oil return hole 311. By providing the filter device 4 at the oil return hole 311, during oil return, the filter device 4 filters the oil in the oil pool. The filtered oil then returns to the compressor body 2 through the oil return hole 311, thereby reducing the problem of blockage of the oil return hole 311, ensuring smooth oil return of the compressor system 10, and further improving the stability and reliability of the operation of the compressor system 10.

[0058] In some embodiments of the present invention, the filter device 4 includes a filter element 41, which is positioned at the oil return hole 311. The cross-sectional area of the filter element 41 is greater than or equal to the cross-sectional area of the oil return hole 311. Specifically, the filter element 41 can be configured as a filter screen in the shape of a sheet or cylinder, etc., made of stainless steel with high strength and good corrosion resistance. The cross-sectional area of the filter screen refers to the cross-sectional area of the filter screen perpendicular to its filtering direction. The filter screen is welded to the oil return hole 311 and completely covers the oil return hole 311. This ensures that during oil return, the oil must first be filtered by the filter screen before entering the oil return hole 311, thereby improving the filtering effect.

[0059] In some embodiments of the present invention, the filter device 4 further includes a connecting bracket 42, one end of which is connected to the oil return hole 311, and the other end of the connecting bracket 42 is connected to the filter element 41. Specifically, the connecting bracket 42 is made of stainless steel, which has high strength and good corrosion resistance. The connecting bracket 42 is a trumpet-shaped structure, having a first end and a second end relative to each other along its axial direction. The outer diameter of the first end is adapted to the oil return hole 311, so that the first end can be inserted into the oil return hole 311 or welded to the oil return hole 311. The second end is in a gradually expanding shape. From the first end to the second end, the cross-sectional shape of the trumpet-shaped structure gradually increases. The cross-sectional shape of the second end is adapted to the cross-sectional shape of the filter screen, so that the filter screen can be welded to the second end of the connecting bracket 42. By providing the connecting bracket 42, the filter screen can be supported and the installation of the filter screen is facilitated.

[0060] In some embodiments of the present invention, the first air return pipe 3 further includes a second pipe section 32 and a third pipe section 33. One end of the second pipe section 32 is connected to the air return connector 212, and the other end of the second pipe section 32 is connected to the first pipe section 31. One end of the third pipe section 33 is connected to the end of the first pipe section 31 facing away from the second pipe section 32, and the other end of the third pipe section 33 extends toward the top of the shell 1. The end of the third pipe section 33 away from the first pipe section 31 is located above the height center of the tank body 21. The end of the first pipe section 31 away from the air return connector 212 is the air return end. The air return end extends toward the top of the shell 1 and is located above the height center of the tank body 21. The height center is the height centerline. The height of the air return end is higher than half the height of the tank body 21. This ensures that the air return end is located in the gaseous refrigerant separated from the gas-liquid mixed refrigerant, facilitating the suction of the gaseous refrigerant into the compressor body 2 through the negative pressure of the compressor body 2.

[0061] In some embodiments of the present invention, the second pipe segment 32 and the third pipe segment 33 are respectively disposed at opposite ends of the tank body 21, the axis of the second pipe segment 32 is parallel to the axis of the tank body 21, the axis of the first pipe segment 31 is perpendicular to the axis of the second pipe segment 32, and the axis of the third pipe segment 33 is perpendicular to the axis of the first pipe segment 31. Specifically, the tank body 21 is cylindrical, the second pipe segment 32 and the third pipe segment 33 are respectively disposed at radial ends of the tank body 21, the second pipe segment 32 extends in a vertical direction, the axis of the third pipe segment 33 is parallel to the axis of the second pipe segment 32, a transition pipe segment 35 is connected between the first and second pipe segments 31, the angle between the transition pipe segment 35 and the first pipe segment 31 is an obtuse angle, the first and third pipe segments 31 and 33 are perpendicular to each other, and the first pipe segment 31 extends radially along the tank body 21. Through the above arrangement, pipelines can be saved and the space occupied by the first return air pipe 3 can be reduced. At the same time, the distance the first return air pipe 3 passes through the installation space 25 can be longer, reducing the return air noise. In addition, there are no large bends in the layout of the first return air pipe 3, ensuring the smoothness of the return air.

[0062] In some embodiments, the compressor body 2 includes a rotor and a stator disposed in the tank body 21 , the number of the rotors is one or two, and the number of the return air connectors 212 is the same as the number of the rotors.

[0063] Normally, a compression chamber is provided in the tank body 21 of the compressor body 2, and a rotor and a piston (not shown in the figure) are provided in the compression chamber. The rotor is used to drive the piston to compress the gas to do work, so as to compress the low-temperature and low-pressure gaseous refrigerant sucked from the inlet into a high-temperature and high-pressure gaseous refrigerant, and discharge the high-temperature and high-pressure gaseous refrigerant from the outlet. A compression chamber and a rotor can be provided in the tank body 21, and accordingly, the number of return air connectors 212 is one. Two compression chambers and two rotors can also be provided in the tank body 21, and a rotor is provided in each compression chamber, and accordingly, the number of return air connectors 212 is two. For a compressor body 2 with two rotors, the two rotors operate alternately in their respective compression chambers, so that the gaseous refrigerant can be continuously compressed, thereby improving the energy efficiency of the compressor body 2.

[0064] In some embodiments, there are two return air connectors 212, and the two return air connectors 212 are spaced apart on the side wall of the tank body 21 along the height direction of the tank body 21. There is one second pipe section 32, and one second pipe section 32 is connected to the two return air connectors 212 respectively. Specifically, the first return air pipe 3 is in an "F" shape, and the first return air pipe 3 also includes two branch pipes 34. The two branch pipes 34 are connected to the two return air connectors 212 in a one-to-one correspondence. The two branch pipes 34 are parallel to each other and perpendicular to the side wall of the tank body 21. The two branch pipes 34 are both connected to the second pipe section 32. By providing two branch pipes 34, the low-temperature gaseous refrigerant sucked in from the first return air can enter the two compression chambers in the compressor body 2 through the two return air connectors 212 at the same time. The two compression chambers alternately compress the gaseous refrigerant, thereby improving the energy efficiency of the compressor body 2.

[0065] In some embodiments, a connector 23 is further provided on the side of the compressor body 2, and the connector 23 is connected to the end of the first return air pipe 3 away from the return air connector 212. Specifically, one end of the connector 23 is connected to the side of the tank body 21, and the other end of the connector 23 is arranged around the outer periphery of the end of the first return air pipe 3 away from the return air connector 212, further reducing the vibration of the first return air pipe 3 and reducing noise. The shape of the connector 23 is not limited, as long as it can fix a section of the first return air pipe 3. One end of the connector 23 can be welded to the side of the tank body 21, and one end of the connector 23 can 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.

[0066] In some embodiments, the compressor body 2 also includes a cover body 22 covering the top of the tank body 21, and a muffler 24 is provided on the cover body 22. The muffler 24 can effectively reduce the noise generated by vibration during the operation of the compressor body 2, further reduce the system noise, and improve the operating efficiency of the compressor and extend its service life.

[0067] In some embodiments of the present invention, the compressor system 10 further includes a second air return pipe 5, which can be a straight pipe or a curved pipe. A return port 13 is provided at the top of the housing 1. One end of the second air return pipe 5 extends from the return port 13, and the other end of the second air return pipe 5 is located within the housing 1 and spaced apart from the end of the first air return pipe 3 away from the return joint 212. By arranging the compressor body 2 within the housing 1 and arranging the first air return pipe 3 and the second air return pipe 5 separately and spaced apart from each other, the inertial force and moment of inertia of the high-speed rotation of the compressor body 2 during operation cause the compressor body 2 to vibrate, and the vibration is transmitted to the first air return pipe 3. As a result, the vibration between the compressor body 2 and the first air return pipe 3 gradually dissipates and attenuates within the housing 1, and is not transmitted to the second air return pipe 5 connected to the housing 1. At the same time, the housing 1 covering the outside of the compressor body 2 also shields the noise generated by the compressor body 2 and the first air return pipe 3 during operation, thereby reducing low-frequency vibration and noise and improving the user's hearing experience.

[0068] In some embodiments, in the circumferential direction of the shell 1, the end of the second return air pipe 5 located inside the shell 1 is staggered with the end of the first return air pipe 3 away from the return air connector 212. Specifically, the shell 1 and the compressor body 2 are both cylindrical. The compressor body 2 can stand upright inside the shell 1, or it can lie on its side inside the shell 1. This embodiment is described by taking the compressor body 2 standing upright inside the shell 1 as an example. The low-temperature gas-liquid mixed refrigerant entering the shell 1 from the second return air pipe 5 contains liquid refrigerant. The end of the first return air pipe 3 away from the return air connector 212 is the return air end. The end of the second return air pipe 5 located inside the shell 1 is staggered with the return air end of the first return air pipe 3 instead of facing each other. This can prevent the liquid refrigerant from entering the first return air pipe 3 from the return air end under the action of its own gravity, thereby reducing the possibility of liquid hammer problems in the compressor body 2.

[0069] In some embodiments of the present invention, the compressor system 10 further includes an oil separation device and a pipe assembly. The oil separation device includes an oil separation chamber 61 connected to the top outside of the shell 1. An exhaust connector 211 is provided at the top of the tank body 21. One end of the pipe assembly is connected to the exhaust connector 211, and the other end of the pipe assembly extends into the oil separation chamber 61 and bends toward the side wall of the oil separation chamber 61. By integrating the oil separation device on the top outside of the shell 1, the oil and refrigerant high-pressure mixed gas can be separated. During oil separation, the oil and refrigerant high-pressure mixed gas enter the oil separation chamber 61 through the pipe assembly, and the oil is separated by the cyclone separation principle. An oil hole is provided at the top of the shell 1, and the separated oil is collected at the bottom of the shell 1 through the oil hole, thereby achieving the effect of oil separation. Integrating the oil separation device with the compressor body 2 has a compact structure, saves pipelines and components, occupies little space, and realizes the oil separation function while saving costs and improving the degree of integration.

[0070] In some embodiments of the present invention, the axis of one end of the tube assembly extending into the oil separation chamber 61 lies in a plane perpendicular to the inner wall of the oil separation chamber 61. Specifically, the tube assembly includes a first exhaust pipe 62 and a separation pipe 63. The separation pipe 63 has an inlet and an outlet along its extension direction. The inlet end of the separation pipe 63 is connected to the first exhaust pipe 62, and the outlet end of the separation pipe 63 extends into the oil separation chamber 61. The axis of the outlet end is perpendicular to the inner wall of the oil separation chamber 61. This can change the direction of movement of the high-pressure mixed gas of oil and refrigerant entering the oil separation chamber 61, so that the high-pressure mixed gas of oil and refrigerant enters the oil separation chamber 61 instead of moving in a vertical direction to moving tangentially along the oil separation chamber 61. This quickly forms a stable vortex in the oil separation chamber 61, separating the oil from the gas under the action of centrifugal force. This also prolongs the residence time of oil droplets in the separation pipe 63, increases the chances of oil droplet collision and aggregation, and effectively reduces the possibility of separated oil droplets being re-entered into the fluid, reducing back-mixing and improving separation effect and efficiency. The oil and refrigerant high-pressure mixed gas are separated by the cyclone separation principle. The separated oil is adsorbed by the inner wall of the shell 1 and falls along the inner wall of the oil separation chamber 61 under the action of gravity. It enters the shell 1 through the oil hole and gathers at the bottom of the shell 1, achieving the oil separation effect.

[0071] In some embodiments, the separation pipe 63 includes a first branch pipe 631, a second branch pipe 632, and a transition pipe 633 connected between the first branch pipe 631 and the second branch pipe 632. The axis of the first branch pipe 631 and the axis of the second branch pipe 632 are perpendicular to each other, the axis of the second branch pipe 632 is perpendicular to the inner wall of the oil separation chamber 61, and the transition pipe 633 is an arc-shaped pipe. Specifically, the separation pipe 63 is an L-shaped pipe, which includes the first branch pipe 631, the second branch pipe 632, and the arc-shaped transition pipe 633. The arc-shaped structure can smoothly transfer the fluid from the first branch pipe 631 to the second branch pipe 632, avoiding fluid impact and turbulence caused by the right-angle connection. The arc-shaped pipe design can also effectively reduce the turbulence intensity of the fluid at the bend, making the fluid flow more stable, dispersing the impact force of the fluid on the pipe wall, extending the service life of the separation pipe 63, and reducing the maintenance cost of the equipment.

[0072] In some embodiments, the compressor system 10 also includes a second exhaust pipe 7, and an exhaust port 611 is provided on the top of the oil separation chamber 61. One end of the second exhaust pipe 7 extends into the oil separation chamber 61, and the other end is discharged from the exhaust port 611. The end of the separation pipe 63 away from the first exhaust pipe 62 is lower than the end of the second exhaust pipe 7 extending into the oil separation chamber 61. This can prevent the oil and refrigerant high-pressure mixed gas entering the oil separation chamber 61 from the outlet of the separation pipe 63 from being directly sucked into the second exhaust pipe 7 for discharge, and can ensure that the fluid has sufficient residence time in the oil separation chamber 61 to complete the separation process and ensure the separation effect of the oil and refrigerant high-pressure mixed gas.

[0073] In some embodiments, the compressor system 10 further includes a vibration damping device 8, which is disposed between the compressor body 2 and the shell 1 and is located at one end of the tank body 21 near the cover 22 or in the middle of the tank body 21. Specifically, the shell 1 is an entire cylindrical structure and includes a first subshell 11 and a second subshell 12, which are interconnected along the height direction of the shell 1. The vibration damping device 8 includes a vibration damping plate 81 and a plurality of elastic vibration dampers 82. The vibration damping plate 81 is disposed on the outside of the tank body 21 along the circumference of the tank body 21, and the plurality of elastic vibration dampers 82 are spaced apart on the annular vibration damping plate 81 along the extension direction of the vibration damping plate 81. The elastic vibration dampers 82 may be rubber pads or springs, etc. When vibration is transmitted to the vibration damping device 8, the elastic vibration dampers 82 undergo elastic deformation (such as compression, stretching, or bending). This deformation can absorb vibration energy, thereby reducing the vibration amplitude and improving the stability and reliability of the system.

[0074] A second aspect of the present invention provides an air-conditioning outdoor unit 100 , comprising a chassis and the aforementioned compressor system 10 , wherein the compressor system 10 is mounted on the chassis.

[0075] In this embodiment, multiple vibration damping assemblies are installed between the casing 1 and the chassis of the compressor system 10. Each vibration damping assembly includes a mounting member and a vibration damping pad. The mounting member can be mounted on the bottom of the casing 1 or on a sidewall near the bottom. The mounting member can be a metal bracket, bolt, nut, etc. The vibration damping pad can be made of rubber, springs, airbags, or other elastic materials to absorb and dissipate vibration energy. The multiple vibration damping assemblies are evenly spaced between the casing 1 and the chassis. During installation, ensure that the vibration damping assemblies are evenly stressed to avoid uneven stress or deformation of the vibration damping pads due to improper installation.

[0076] The third aspect of the present invention provides a HVAC device 1000, such as Figure 7 As shown, the HVAC equipment 1000 is an air conditioner, including an air-conditioning indoor unit 200 and the above-mentioned air-conditioning outdoor unit 100. The air-conditioning outdoor unit 100 also includes an outdoor heat exchanger 20, a four-way valve 9, a fan 30 and a circulation loop, etc. An indoor heat exchanger 201 is provided in the air-conditioning indoor unit 200. The four-way valve 9 includes a first interface 91, a second interface 92, a third interface 93 and a fourth interface 94. The first interface 91 is connected to the second exhaust pipe 7, the second interface 92 is connected to the outdoor heat exchanger 20, the third interface 93 is connected to the second return air pipe 5 of the compressor body 2, and the fourth interface 94 is connected to the indoor heat exchanger 201. The four-way valve 9 is used to control the flow path of the refrigerant of the HVAC equipment 1000.

[0077] The HVAC equipment 1000 has a cooling mode and a cooling mode. In the heating mode, the first interface 91 is connected to the fourth interface 94, and the second interface 92 is connected to the third interface 93. The second exhaust pipe 7 of the compressor body 2 is connected to the indoor heat exchanger 201, and the second return air pipe 5 of the compressor body 2 is connected to the outdoor heat exchanger 20. The indoor heat exchanger 201 is connected to the outdoor heat exchanger 20, thereby forming a heating circuit for the refrigerant. In the heating mode, the high-temperature refrigerant flowing out of the compressor body 2 flows along the refrigerant pipe to the indoor heat exchanger 201. The refrigerant flowing through the indoor heat exchanger 201 exchanges heat with the indoor environment to achieve heating of the indoor environment; after heating, the low-temperature refrigerant flows to the outdoor heat exchanger 20, and then flows to the second return air pipe 5 of the compressor body 2 through the outdoor heat exchanger 20. During the oil separation process in this mode, the high-pressure mixed gas of oil and refrigerant enters the oil separation chamber 61 through the first exhaust pipe 62 and the separation pipe 63 in turn. In the oil separation chamber 61, the cyclone separation principle is used to throw the lubricating oil to the inner wall and flows into the bottom of the shell 1 by gravity sedimentation. The lubricating oil returns to the compressor body 2 through the return oil capillary, and the separated refrigerant gas is discharged through the second exhaust pipe 7 at the top of the oil separation chamber 61.

[0078] In cooling mode, the first interface 91 is connected to the second interface 92, and the third interface 93 is connected to the fourth interface 94. The second exhaust pipe 7 of the compressor body 2 is connected to the outdoor heat exchanger 20, and the second return air pipe 5 of the compressor body 2 is connected to the indoor heat exchanger 201. The indoor heat exchanger 201 is connected to the outdoor heat exchanger 20, thereby forming a cooling return flow of the refrigerant. The high-temperature refrigerant flowing out of the compressor body 2 flows along the refrigerant pipe to the outdoor heat exchanger 20. After cooling through the outdoor heat exchanger 20, the refrigerant continues to flow to the indoor heat exchanger 201 to exchange heat with the indoor environment to achieve cooling of the indoor environment. After cooling, the refrigerant finally flows to the second return air pipe 5 of the compressor body 2. The oil separation process in this mode is the same as the oil separation process in heating mode and is not repeated here.

[0079] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A compressor system, characterized in that: include: case; A compressor body is suspended in the shell, the compressor body includes a tank body, a return air joint is provided on the side wall of the tank body, and an installation space is formed between the bottom of the tank body and the bottom of the shell; One end of the first air return pipe is connected to the air return joint, and the other end is bent toward the bottom of the shell and extends toward the top of the shell after passing through the installation space.

2. The compressor system according to claim 1, wherein Oil is arranged in the installation space. The first air return pipe includes a first pipe section located in the installation space. The first pipe section is provided with an oil return hole. The oil return hole is located below the liquid level line of the oil.

3. The compressor system according to claim 2, wherein: The oil return hole is arranged at the bottom of the first pipe section and / or at the side of the first pipe section.

4. The compressor system according to claim 2, wherein: The oil return hole is provided with a filtering device, and the filtering device is used to filter the oil entering the first air return pipe through the oil return hole.

5. The compressor system according to claim 4, characterized in that The filtering device includes a filter element, which is arranged at the oil return hole. The cross-sectional area of the filter element is greater than or equal to the cross-sectional area of the oil return hole.

6. The compressor system according to claim 5, wherein: The filter device further includes a connecting bracket, one end of which is connected to the oil return hole, and the other end of which is connected to the filter element.

7. The compressor system according to claim 2, wherein: The first air return pipe further includes a second pipe section and a third pipe section, one end of the second pipe section is connected to the air return joint, the other end of the second pipe section is connected to the first pipe section, one end of the third pipe section is connected to an end of the first pipe section facing away from the second pipe section, and the other end of the third pipe section extends toward the top of the housing; An end of the third pipe section away from the first pipe section is located above the height center of the tank body.

8. The compressor system according to claim 7, wherein: The second pipe segment and the third pipe segment are respectively arranged at opposite ends of the tank body, the axis of the second pipe segment is parallel to the axis of the tank body, the axis of the first pipe segment is perpendicular to the axis of the second pipe segment, and the axis of the third pipe segment is perpendicular to the axis of the first pipe segment.

9. The compressor system according to claim 7, wherein: There are two return air connectors, which are spaced apart on the side wall of the tank along the height direction of the tank. There is one second pipe segment, which is connected to the two return air connectors respectively.

10. The compressor system according to any one of claims 1 to 9, characterized in that The compressor system also includes a second return air pipe, a return air port is provided on the top of the shell, one end of the second return air pipe extends from the return air port, the other end of the second return air pipe is located in the shell, and is spaced apart from the end of the first return air pipe away from the return air joint.

11. The compressor system according to any one of claims 1 to 9, characterized in that The compressor system also includes an oil separation device and a pipe assembly. The oil separation device includes an oil separation chamber connected to the outside of the top of the shell. An exhaust joint is provided on the top of the tank body. One end of the pipe assembly is connected to the exhaust joint, and the other end of the pipe assembly extends into the oil separation chamber and bends toward the side wall of the oil separation chamber.

12. The compressor system according to claim 11, wherein The plane where the axis of one end of the pipe assembly extending into the oil separation chamber lies is perpendicular to the wall surface of the inner side wall of the oil separation chamber.

13. An air conditioner outdoor unit, characterized in that: Comprising the compressor system according to any one of claims 1 to 12.

14. A HVAC equipment, characterized in that: It comprises an air-conditioning indoor unit and an air-conditioning outdoor unit as claimed in claim 13, wherein the air-conditioning outdoor unit is connected to the air-conditioning indoor unit through a pipeline.

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