Compressor assembly and refrigeration equipment

Abstract

The utility model discloses a compressor assembly and refrigeration equipment, and the compressor assembly comprises a compressor body which is provided with an air suction port; the liquid storage tank is located outside the compressor body; one end of the air return pipe is connected with the air suction port, and the other end is communicated with the upper part of the inner volume of the liquid storage tank; one end of the liquid return pipe is connected with the bottom of the liquid storage tank, the other end of the liquid return pipe is communicated with the air suction port, a control valve is arranged on the liquid return pipe, and the opening degree of the control valve is adjustable. According to the compressor assembly disclosed by the utility model, the flow of the liquid in the liquid return pipe can be controlled, so that the liquid return amount can be accurately controlled, and the compressor assembly has different liquid return amounts in different working conditions, so that the compressor assembly has different refrigerant operation amounts in different working conditions; therefore, stable operation of the compressor assembly is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a compressor component and refrigeration equipment. Background Art

[0002] The existing technology controls the amount of liquid refrigerant stored at the bottom of the liquid storage tank by controlling the height and size of the oil return hole on the liquid storage tank. Low-temperature heating and maximum refrigeration conditions require that the liquid storage tank store a small amount of refrigerant to maximize the system capacity and meet the maximum refrigeration and low-temperature heating capacity requirements; however, if the oil return hole is too large, the system will inhale too much liquid under rated refrigeration and low-temperature intermediate refrigeration conditions, seriously affecting the performance of the compressor.

[0003] The liquid storage tank in the prior art has technical problems such as being unable to simultaneously ensure that a small amount of refrigerant is stored at the bottom of the liquid storage tank during low-temperature heating conditions and maximum cooling conditions, and a large amount of refrigerant is stored at the bottom of the liquid storage tank during rated cooling and low-temperature intermediate cooling conditions. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a compressor assembly, which enables the compressor assembly to have different refrigerant running amounts in different working conditions, thereby ensuring stable operation of the compressor assembly.

[0005] The utility model also provides a refrigeration device, comprising the compressor assembly mentioned above.

[0006] According to the compressor assembly of the embodiment of the utility model, it includes: a compressor body, the compressor body has an air intake port; a liquid storage tank, the liquid storage tank is located outside the compressor body; a return pipe, one end of the return pipe is connected to the air intake port, and the other end is connected to the upper part of the inner volume of the liquid storage tank; a liquid return pipe, one end of the liquid return pipe is connected to the bottom of the liquid storage tank, and the other end is connected to the air intake port, and a control valve is provided on the liquid return pipe, and the opening of the control valve is adjustable.

[0007] According to the compressor assembly of the embodiment of the utility model, one end of the return pipe is connected to the air inlet of the compressor, and the other end is connected to the upper part of the inner volume of the liquid storage tank; one end of the return pipe is connected to the bottom of the liquid storage tank, and the other end is connected to the air inlet. A control valve is provided on the return pipe, and the opening of the control valve is adjustable. The flow rate of the liquid in the return pipe is controlled, so that the return liquid amount can be accurately controlled, so that the compressor assembly can have different return liquid amounts in different working conditions, so that the compressor assembly can have different refrigerant running amounts in different working conditions, thereby ensuring the stable operation of the compressor assembly.

[0008] In some embodiments of the present invention, the control valve is an expansion valve.

[0009] In some embodiments of the present invention, one end of the liquid return pipe away from the liquid storage tank is communicated with a portion of the air return pipe located outside the liquid storage tank.

[0010] In some embodiments of the present invention, one end of the liquid return pipe is connected to the portion of the air return pipe located inside the liquid storage tank, and the other end is connected to the bottom of the internal volume of the liquid storage tank.

[0011] In some embodiments of the present invention, one end of the liquid return pipe away from the liquid storage tank is directly connected to the air intake port.

[0012] In some embodiments of the utility model, there are multiple liquid storage tanks, and the return air pipes are multiple corresponding to the multiple liquid storage tanks, and the return liquid pipe is connected between at least one of the liquid storage tanks and the air intake port.

[0013] In some embodiments of the utility model, the compressor assembly further includes: a bypass pipe, the bypass pipe is connected between the liquid storage tank and the air intake port and is arranged in parallel with the liquid return pipe, and a throttling device is provided on the bypass pipe.

[0014] In some embodiments of the present invention, the throttling device is an expansion valve, a capillary tube or a throttling short tube.

[0015] In some embodiments of the present invention, the bypass pipe is connected to the lower end of the liquid storage tank.

[0016] The refrigeration equipment according to the embodiment of the utility model includes the above-mentioned compressor assembly.

[0017] According to the refrigeration equipment of the embodiment of the utility model, by setting the above-mentioned compressor assembly, one end of the return pipe is connected to the air intake of the compressor, and the other end is connected to the upper part of the internal volume of the liquid storage tank; one end of the return pipe is connected to the bottom of the liquid storage tank, and the other end is connected to the air intake, and a control valve is provided on the return pipe, and the opening of the control valve is adjustable. In this way, the flow rate of the liquid in the return pipe can be controlled, so that the return liquid amount can be accurately controlled, so that the compressor assembly can have different return liquid amounts in different working conditions, so that the compressor assembly can have different refrigerant running amounts in different working conditions, thereby ensuring the stable operation of the compressor assembly.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a stereoscopic diagram of a compressor assembly according to an embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of pipeline connection of a compressor assembly according to an embodiment of the utility model;

[0022] Figure 3 is a three-dimensional diagram of a compressor assembly according to another embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of pipeline connection of a compressor assembly according to another embodiment of the utility model.

[0024] Reference numerals:

[0025] 10. Compressor components;

[0026] 1. Compressor body; 11. Air intake;

[0027] 2. Liquid storage tank;

[0028] 3. Air return pipe;

[0029] 4. Liquid return pipe; 41. Control valve;

[0030] 5. Bypass pipe; 51. Throttling device. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The compressor assembly 10 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0035] like Figure 1-Figure 4 As shown, the compressor assembly 10 according to the embodiment of the utility model includes: a compressor body 1, a liquid storage tank 2, an air return pipe 3 and a liquid return pipe 4.

[0036] Specifically, refer to Figure 1-Figure 4 The compressor body 1 has an air inlet 11; the liquid storage tank 2 is located outside the compressor body 1; one end of the return pipe 3 is connected to the air inlet 11, and the other end is connected to the upper part of the inner volume of the liquid storage tank 2; one end of the return pipe 4 is connected to the bottom of the liquid storage tank 2, and the other end is connected to the air inlet 11. The return pipe 4 is provided with a control valve 41, and the opening of the control valve 41 is adjustable. It should be noted that when the mixed refrigerant enters the liquid storage tank 2, the gaseous refrigerant can enter the return pipe 3 through the separation effect of the liquid storage tank 2, and the liquid refrigerant is separated to the bottom of the liquid storage tank 2. In this way, most of the liquid refrigerant can be prevented from entering the compressor body 1 and causing damage to the compressor body 1, thereby improving the service life of the compressor body 1. When the compressor body 1 is working, the gaseous refrigerant will flow to the air inlet 11 through the return pipe 3, and at the same time, part of the liquid refrigerant in the liquid storage tank 2 can flow to the air inlet 11 through the return pipe 4, so that the compressor assembly 10 can work normally.

[0037] It is understandable that the control valve 41 can be an electric control valve 41, and the opening of the control valve 41 can be adjusted by an external control system. The external control system can include a sensor for detecting the pressure or temperature at the air inlet 11 of the compressor body 1, and automatically adjusting the opening of the control valve 41 according to the detection result. When the compressor assembly 10 is running, the external control system can determine the operating condition of the compressor assembly 10 at this time according to the pressure and temperature at the air inlet 11 and the liquid level information in the liquid storage tank 2, so as to automatically adjust the opening of the control valve 41, thereby controlling the return liquid amount.

[0038] For example, in low-temperature heating and high-frequency refrigeration conditions, when the pressure or temperature at the air inlet 11 is too high, the external control system can appropriately increase the opening of the control valve 41, increase the return liquid volume, and increase the amount of refrigerant in the system to reduce the pressure and temperature at the air inlet 11, thereby increasing the system capacity. For example, in rated refrigeration, low-temperature intermediate refrigeration, and low-temperature deposition startup conditions, when the pressure or temperature at the air inlet 11 is too low, the external control system can appropriately reduce the opening of the control valve 41, reduce the return liquid volume, and reduce the amount of refrigerant in the system to increase the pressure and temperature at the air inlet 11, thereby increasing the system capacity.

[0039] In addition, a liquid level detection device may be provided in the liquid storage tank 2 to detect the liquid level in the liquid storage tank 2 and send the liquid level information to the external control system so that the external control system can adjust the opening of the control valve 41 according to the liquid level information. When the liquid level in the liquid storage tank 2 is too low, the external control system can appropriately reduce the opening of the control valve 41 to reduce the amount of liquid return to avoid the liquid in the liquid storage tank 2 being completely emptied.

[0040] Therefore, by adjusting the opening of the control valve 41, the flow rate of the liquid in the return liquid pipe 4 can be controlled, so that the precise control of the return liquid amount can be achieved, so that the compressor assembly 10 can have different return liquid amounts in different working conditions, and the compressor assembly 10 can have different refrigerant operating amounts in different working conditions, thereby ensuring the stable operation of the compressor assembly 10.

[0041] Furthermore, if Figure 1 and Figure 3 As shown, one end of the liquid return pipe 4 is connected to the bottom of the liquid storage tank 2. Thus, the liquid refrigerant automatically flows into the liquid return pipe 4 by gravity, so there is no need to set up an additional power device, simplifying the structure.

[0042] According to the compressor assembly 10 of the embodiment of the utility model, one end of the return pipe 3 is connected to the air inlet 11 of the compressor, and the other end is connected to the upper part of the inner volume of the liquid storage tank 2; one end of the return pipe 4 is connected to the bottom of the liquid storage tank 2, and the other end is connected to the air inlet 11. The return pipe 4 is provided with a control valve 41, and the opening of the control valve 41 is adjustable. Thus, the flow rate of the liquid in the return pipe 4 is controlled, so that the return liquid amount can be accurately controlled, so that the compressor assembly 10 can have different return liquid amounts in different working conditions, so that the compressor assembly 10 can have different refrigerant running amounts in different working conditions, thereby ensuring the stable operation of the compressor assembly 10.

[0043] In some embodiments of the utility model, the control valve 41 is an expansion valve. It is understandable that the setting of the expansion valve can accurately control the refrigerant flow from the liquid storage tank 2 to the compressor body 1, ensuring that the refrigerant flow sucked by the compressor body 1 matches the working requirements of the system. At the same time, when the throttling degree is large enough, the expansion valve can also throttle and reduce the pressure of the high-temperature and high-pressure refrigerant flowing to the air intake port 11 to form a low-temperature and low-pressure gaseous refrigerant, thereby reducing the liquid hammer phenomenon in the compressor body 1.

[0044] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, one end of the liquid return pipe 4 away from the liquid storage tank 2 is connected to the portion of the gas return pipe 3 located outside the liquid storage tank 2, thereby making the liquid return pipe 4 and the expansion valve disposed outside the liquid storage tank 2, thereby facilitating the maintenance and installation of the liquid return pipe 4 and the expansion valve;

[0045] In some embodiments of the present invention, one end of the liquid return pipe 4 is communicated with the portion of the gas return pipe 3 located inside the liquid storage tank 2, and the other end is communicated with the bottom of the internal volume of the liquid storage tank 2. Thus, the liquid return pipe 4 can be arranged in the liquid storage tank 2, thereby fully utilizing the space inside the liquid storage tank 2, which is beneficial to saving the volume of the compressor assembly 10.

[0046] In some embodiments of the present invention, one end of the liquid return pipe 4 away from the liquid storage tank 2 is directly connected to the air intake port 11, thereby avoiding interference between the refrigerant in the liquid return pipe 4 and the refrigerant in the air return pipe 3.

[0047] In some embodiments of the utility model, there are multiple liquid storage tanks 2, and the return pipes 3 are multiple corresponding to the multiple liquid storage tanks 2, and a return pipe 4 is connected between at least one liquid storage tank 2 and the air intake port 11. It can be understood that multiple liquid storage tanks 2 are conducive to storing more liquid refrigerant, and at least one liquid storage tank 2 is connected to the return pipe 4 between the air intake port 11, so that the compressor assembly 10 can transport the refrigerant according to different working conditions, so as to facilitate the compressor assembly 10 to work more efficiently.

[0048] Furthermore, among the multiple return air pipes 3, one end of one of the return air pipes 3 is connected to the upper part of the inner volume of the corresponding liquid storage tank 2, and the other end is connected to the inlet of the next adjacent liquid storage tank 2 along the refrigerant flow direction. Thus, the multiple return air pipes 3 can be connected, so that the refrigerant passes through the separation effect of the liquid storage tank 2 multiple times, so that the gaseous refrigerant in the return air pipe 3 is purer, thereby further reducing the liquid refrigerant entering the compressor body 1 and causing damage to the compressor body 1, thereby increasing the service life of the compressor body 1.

[0049] In some embodiments of the present invention, Figure 3 and Figure 4As shown, the compressor assembly 10 further includes: a bypass pipe 5, the bypass pipe 5 is connected between the liquid storage tank 2 and the air inlet 11 and is arranged in parallel with the liquid return pipe 4, and a throttling device 51 is arranged on the bypass pipe 5. It can be understood that by arranging the bypass pipe 5, the liquid refrigerant can flow from the return pipe and the bypass pipe 5 to the compressor body 1 at the same time, thereby increasing the return speed of the refrigerant, thereby improving the operating efficiency of the compressor assembly 10.

[0050] Among them, when the throttling degree is large enough, the throttling device 51 can throttle and reduce the pressure of the high-temperature and high-pressure refrigerant to form a low-temperature and low-pressure gaseous refrigerant, thereby reducing the liquid hammer phenomenon in the compressor body 1.

[0051] In some embodiments of the utility model, the throttling device 51 is an expansion valve, a capillary tube or a throttling short tube. It can be understood that the expansion valve, the capillary tube and the throttling short tube have simple structures and mature technologies, thereby facilitating cost savings. Among them, there can be multiple bypass pipes 5, and multiple bypass pipes 5 are arranged in parallel. When there are multiple bypass pipes 5, the throttling devices 51 on the multiple bypass pipes 5 can be the same or different.

[0052] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the bypass pipe 5 is connected to the lower end of the liquid storage tank 2. Thus, the liquid refrigerant automatically flows into the bypass pipe 5 by gravity, so there is no need to set up an additional power device, simplifying the structure.

[0053] The refrigeration device according to the present utility model is described below.

[0054] The refrigeration device according to the embodiment of the utility model includes the compressor assembly 10 mentioned above.

[0055] According to the refrigeration equipment of the embodiment of the utility model, by setting the above-mentioned compressor assembly 10, one end of the return pipe 3 is connected to the air inlet 11 of the compressor, and the other end is connected to the upper part of the inner volume of the liquid storage tank 2; one end of the return pipe 4 is connected to the bottom of the liquid storage tank 2, and the other end is connected to the air inlet 11. The return pipe 4 is provided with a control valve 41, and the opening of the control valve 41 is adjustable. In this way, the flow rate of the liquid in the return pipe 4 is controlled, so that the precise control of the return liquid amount can be achieved, so that the compressor assembly 10 can have different return liquid amounts in different working conditions, so that the compressor assembly 10 can have different refrigerant running amounts in different working conditions, thereby ensuring the stable operation of the compressor assembly 10.

[0056] The following describes a compressor assembly 10 according to specific embodiments 1 and 2 of the present invention. It is worth noting that the following description is merely exemplary and is intended to be used to explain the present invention, but should not be construed as a limitation on the present invention.

[0057] Embodiment 1:

[0058] like Figure 1 and Figure 2 As shown, the compressor assembly 10 according to the embodiment of the utility model includes: a compressor body 1, a liquid storage tank 2, an air return pipe 3 and a liquid return pipe 4.

[0059] Furthermore, if Figure 1 and Figure 2 As shown, the compressor body 1 has an air intake port 11 ; the liquid storage tank 2 is located outside the compressor body 1 ; one end of the return air pipe 3 is connected to the air intake port 11 , and the other end is connected to the upper part of the inner volume of the liquid storage tank 2 .

[0060] Furthermore, if Figure 1 and Figure 2 As shown, one end of the liquid return pipe 4 is connected to the lower end of the liquid storage tank 2, and the other end is connected to the air intake port 11. The end of the liquid return pipe 4 away from the liquid storage tank 2 is connected to the part of the air return pipe 3 located outside the liquid storage tank 2. The liquid return pipe 4 is provided with a control valve 41, which is an expansion valve, and the opening of the control valve 41 is adjustable. There are multiple liquid storage tanks 2, and the air return pipes 3 are multiple corresponding to the multiple liquid storage tanks 2. The end of each air return pipe 3 away from the liquid storage tank 2 is connected to the air intake port 11, and a liquid return pipe 4 is connected between at least one liquid storage tank 2 and the air intake port 11.

[0061] Thus, one end of the return pipe 3 is connected to the air inlet 11 of the compressor, and the other end is connected to the upper part of the inner volume of the liquid storage tank 2; one end of the return pipe 4 is connected to the liquid storage tank 2, and the other end is connected to the air inlet 11. The return pipe 4 is provided with a control valve 41, and the opening of the control valve 41 is adjustable. Thus, the flow of the liquid in the return pipe 4 is controlled, so that the return liquid amount can be accurately controlled, so that the compressor assembly 10 can have different return liquid amounts in different working conditions, so that the compressor assembly 10 can have different refrigerant running amounts in different working conditions, thereby ensuring the stable operation of the compressor assembly 10.

[0062] Embodiment 2:

[0063] like Figure 3 and Figure 4 As shown, most structures of the second embodiment and the first embodiment are the same, wherein the same parts are indicated by the same reference numerals in the figure, and the only difference is that the compressor assembly 10 further includes: a bypass pipe 5, the bypass pipe 5 is connected between the lower end of the liquid storage tank 2 and the air intake port 11 and is arranged in parallel with the liquid return pipe 4, and a throttling device 51 is arranged on the bypass pipe 5. The throttling device 51 is an expansion valve, a capillary tube or a throttling short tube.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A compressor assembly, characterized in that: include: A compressor body, the compressor body having an air intake port; A liquid storage tank, wherein the liquid storage tank is located outside the compressor body; An air return pipe, one end of which is connected to the air inlet, and the other end of which is connected to the upper part of the inner volume of the liquid storage tank; A liquid return pipe, one end of which is connected to the bottom of the liquid storage tank, and the other end of which is communicated with the air intake port. A control valve is provided on the liquid return pipe, and the opening of the control valve is adjustable.

2. The compressor assembly according to claim 1, characterized in that The control valve is an expansion valve.

3. The compressor assembly according to claim 1, characterized in that One end of the liquid return pipe away from the liquid storage tank is communicated with a portion of the air return pipe located outside the liquid storage tank.

4. The compressor assembly according to claim 1, characterized in that One end of the liquid return pipe is communicated with the portion of the air return pipe located inside the liquid storage tank, and the other end is communicated with the bottom of the internal volume of the liquid storage tank.

5. The compressor assembly according to claim 1, characterized in that One end of the liquid return pipe away from the liquid storage tank is directly connected to the air intake port.

6. The compressor assembly according to claim 1, characterized in that There are a plurality of the liquid storage tanks, and there are a plurality of the air return pipes corresponding one to one with the plurality of the liquid storage tanks. The liquid return pipe is connected between at least one of the liquid storage tanks and the air intake port.

7. The compressor assembly according to claim 1, characterized in that Also includes: A bypass pipe is connected between the liquid storage tank and the air intake port and is arranged in parallel with the liquid return pipe. A throttling device is provided on the bypass pipe.

8. The compressor assembly according to claim 7, characterized in that The throttling device is an expansion valve, a capillary tube or a throttling short tube.

9. The compressor assembly according to claim 7, characterized in that The bypass pipe is connected to the lower end of the liquid storage tank.

10. A refrigeration device, characterized in that: Comprising a compressor assembly according to any one of claims 1-9.

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