CN219083453U

CN219083453U - Gas-liquid separation reservoir, air conditioning system and heat pump system

Info

Publication number: CN219083453U
Application number: CN202320012191.8U
Authority: CN
Inventors: 柳龙飞; 刘小强
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-05-26
Anticipated expiration: 2033-01-04

Abstract

The utility model relates to the technical field of compressors, and particularly discloses a gas-liquid separation liquid reservoir, an air conditioning system and a heat pump system. The gas-liquid separation liquid storage device comprises a shell, an air inlet pipe and an air outlet pipe which are communicated with the shell, and a gas-liquid separation pipe which is arranged in the shell and is communicated with the air outlet pipe; still include the U-shaped liquid pipe, at least part of U-shaped liquid pipe is located inside the casing to contact with the liquid refrigerant in the casing, the inlet and the liquid outlet of U-shaped liquid pipe all stretch out to the casing outside, and the inlet is used for the liquid outlet of intercommunication condenser, and the liquid outlet is used for the inlet of intercommunication evaporimeter. The U-shaped liquid pipe is additionally arranged in the gas-liquid separation liquid accumulator and is used for flowing high-pressure medium-temperature liquid refrigerant flowing out through the condenser, and the liquid refrigerant in the gas-liquid separation liquid accumulator can absorb heat of the U-shaped liquid pipe and then evaporate into gaseous refrigerant, so that the liquid impact problem of the compressor can be effectively prevented.

Description

Gas-liquid separation reservoir, air conditioning system and heat pump system

Technical Field

The utility model relates to the technical field of compressors, in particular to a gas-liquid separation liquid reservoir, an air conditioning system and a heat pump system.

Background

As shown in fig. 1, the conventional air conditioning system or heat pump system mainly includes four main components including a compressor 2, a condenser 3, a throttle element 5, and an evaporator 4, and auxiliary components such as a refrigerant circulation medium. During operation, the refrigerant is compressed by the compressor 2 to become a high-temperature high-pressure overheated gaseous refrigerant, the overheated gaseous refrigerant is cooled by the condenser 3 to become a high-pressure middle-temperature supercooled liquid refrigerant, the refrigerant is throttled by the throttling element 5 to generate phase change, the refrigerant enters the evaporator 4 in a gas-liquid two-phase low-temperature low-pressure state to absorb heat and raise temperature, and the low-temperature overheated gaseous refrigerant after temperature raising returns to the compressor 2.

The compressor is the core of the whole air conditioner or heat pump system and is also a source spring of power output, and the liquid storage device of the compressor is used as one of core components of the rotor type compressor, so that the performance and the service life of the compressor are directly influenced by the liquid storage quantity of the liquid storage device and the quality of gas-liquid separation.

When the compressor is in operation in an air conditioning system or a heat pump system, refrigerant is not completely evaporated in the evaporator 4 due to various reasons, so that liquid refrigerant continuously enters the compressor liquid reservoir through the air suction pipe, and when the liquid storage of the compressor liquid reservoir is insufficient or abnormal, the liquid refrigerant continuously enters the cavity of the compressor 2, and a vaporous refrigerant state is formed in the cavity of the compressor 2 and is sucked into the compression cavity, and the phenomenon is called liquid shock. As shown in fig. 2, the conventional liquid reservoir generally comprises an air inlet pipe 12, a filter screen 16, a liquid reservoir body 11, a partition plate 17, an oil return hole 141, an air outlet pipe 13, etc., but the liquid reservoir formed by the above structure still has a liquid impact phenomenon.

Disclosure of Invention

The utility model aims at: a liquid accumulator for gas-liquid separation is disclosed to solve the problem of liquid impact of compressor in running process.

A gas-liquid separation reservoir comprising:

the device comprises a shell, an air inlet pipe and an air outlet pipe which are communicated with the shell, and a gas-liquid separation pipe which is arranged in the shell and is communicated with the air outlet pipe;

further comprises:

the liquid inlet and the liquid outlet of the U-shaped liquid pipe extend out of the shell, the liquid inlet is used for being communicated with the liquid outlet of the condenser, and the liquid outlet is used for being communicated with the liquid inlet of the evaporator.

As the preferable technical scheme of the gas-liquid separation liquid reservoir, the part of the U-shaped liquid pipe positioned in the shell is spiral.

As the preferable technical scheme of the gas-liquid separation reservoir, the liquid inlet and the liquid outlet of the U-shaped liquid pipe are arranged on the same side of the air inlet pipe.

As the preferred technical scheme of gas-liquid separation reservoir, still include the filter, the filter screen install in inside the casing, and set up in the intake pipe with between the gas-liquid separation pipe, the filter screen is used for filtering by the gaseous refrigerant that the intake pipe got into.

As the preferred technical scheme of gas-liquid separation reservoir, still include the baffle, the baffle install in inside the casing, gas-liquid separation pipe and U-shaped liquid pipe wears to locate the baffle, the baffle is provided with the air vent.

As the preferable technical scheme of the gas-liquid separation liquid reservoir, the gas-liquid separation pipe is provided with an oil return hole.

As the preferable technical scheme of the gas-liquid separation liquid reservoir, a filtering piece is arranged at the orifice of the oil return hole. The utility model also provides an air conditioning system, which comprises the gas-liquid separation liquid storage device and

the air inlet pipe of the air-liquid separation liquid storage device is communicated with the evaporator through a pipeline, the air outlet pipe of the air-liquid separation liquid storage device is communicated with the compressor body, the compressor body is communicated with the condenser through a pipeline, the condenser is communicated with the liquid inlet of the air-liquid separation liquid storage device through a pipeline, and the liquid outlet of the air-liquid separation liquid storage device is communicated with the evaporator through a pipeline.

The utility model also provides a heat pump system, which comprises the gas-liquid separation liquid accumulator and

As the preferable technical scheme of the air conditioning system or the heat pump system, the air conditioning system further comprises a throttling element, wherein the throttling element is arranged on a communication pipeline between the liquid outlet and the evaporator.

The beneficial effects of the utility model are as follows:

the utility model provides a gas-liquid separation liquid storage device, which comprises a shell, an air inlet pipe and an air outlet pipe which are communicated with the shell, and a gas-liquid separation pipe which is arranged in the shell and is communicated with the air outlet pipe; still include the U-shaped liquid pipe, at least part of U-shaped liquid pipe is located inside the casing to contact with the liquid refrigerant in the casing, the inlet and the liquid outlet of U-shaped liquid pipe all stretch out to the casing outside, and the inlet is used for the liquid outlet of intercommunication condenser, and the liquid outlet is used for the inlet of intercommunication evaporimeter. The U-shaped liquid pipe is used for flowing high-pressure medium-temperature liquid refrigerant flowing out through the condenser, and the liquid refrigerant in the gas-liquid separation liquid reservoir can absorb heat of the U-shaped liquid pipe and evaporate into gaseous refrigerant, so that the superheat degree in the gas-liquid separation liquid reservoir is ensured.

The utility model also provides an air conditioning system and a heat pump system, which comprise a compressor body, a condenser, an evaporator and the gas-liquid separation liquid storage device, wherein the U-shaped liquid pipes of the gas-liquid separation liquid storage device are respectively connected with the condenser and the evaporator, and the superheat degree in the gas-liquid separation liquid storage device is ensured by utilizing the high-pressure medium-temperature liquid refrigerant flowing out of the condenser under the condition of not increasing an external structure, so that the liquid impact problem of the compressor is effectively prevented, and the safety of the system is improved while the production cost is not increased.

Drawings

FIG. 1 is a schematic diagram of the principle of operation of a prior art air conditioning or heat pump system;

FIG. 2 is a schematic diagram of the internal structure of a prior art reservoir;

FIG. 3 is a schematic diagram of the internal structure of the gas-liquid separation liquid storage tank provided by the utility model;

fig. 4 is a schematic diagram of the working principle of the air conditioning system or the heat pump system provided by the utility model.

In the figure:

11. a housing; 12. an air inlet pipe; 13. an air outlet pipe; 14. a gas-liquid separation pipe; 141. an oil return hole; 15. a U-shaped liquid pipe; 16. a filter screen; 17. a partition plate;

2. a compressor body; 3. a condenser; 4. an evaporator; 5. a throttling element.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 3, an embodiment of the present utility model provides a gas-liquid separation reservoir, specifically including a housing 11, an air inlet pipe 12 and an air outlet pipe 13 which are communicated with the housing 11, and a gas-liquid separation pipe 14 which is provided inside the housing 11 and is communicated with the air outlet pipe 13, in order to ensure the tightness of the gas-liquid separation reservoir and to prevent loosening caused by vibration when the system is in operation, optionally, the air inlet pipe 12 and the air outlet pipe 13 are fixed with the housing 11 by welding; the gas-liquid separation liquid storage device further comprises a U-shaped liquid pipe 15, at least part of the U-shaped liquid pipe 15 is located inside the shell 11 and is in contact with liquid refrigerant in the shell 11, a liquid inlet and a liquid outlet of the U-shaped liquid pipe 15 are both extended out of the shell 11, the liquid inlet is used for being communicated with a liquid outlet of the condenser 3, the liquid outlet is used for being communicated with a liquid inlet of the evaporator 4, and specifically, the U-shaped liquid pipe 15 is welded and fixed with the shell 11. In this embodiment, the air inlet pipe 12, the air outlet pipe 13, the gas-liquid separation pipe 14 and the U-shaped liquid pipe 15 may be made of copper or aluminum, so as to transfer heat better. Further, the portion of the U-shaped liquid tube 15 located in the housing 11 is in a spiral shape, and the spiral structure can increase the contact area between the U-shaped liquid tube 15 and the liquid refrigerant in the gas-liquid separation reservoir, so as to improve the heat conduction effect of the U-shaped liquid tube 15.

Optionally, the liquid inlet and the liquid outlet of the U-shaped liquid pipe 15 are both arranged on the same side as the air inlet pipe 12. In this embodiment, the advantage of placing the liquid inlet, the liquid outlet and the air inlet pipe 12 of the U-shaped liquid pipe 15 on the same side is that: the arrangement of system pipelines is facilitated, and the installation space is saved. Of course, in other embodiments, the liquid inlet and the liquid outlet of the U-shaped liquid pipe 15 may be further disposed at other positions of the gas-liquid separation liquid storage device, and the specific installation position may be adjusted according to practical situations.

Preferably, the gas-liquid separation liquid storage device further comprises a filter screen 16, the filter screen 16 is mounted inside the housing 11 and is disposed between the air inlet pipe 12 and the gas-liquid separation pipe 14, the filter screen 16 is used for filtering the gaseous refrigerant entering from the air inlet pipe 12, specifically, the filter screen 16 is provided with a plurality of meshes, the meshes can be round, oval or fan-shaped, and the like, the meshes on the filter screen 16 can filter the refrigerant entering from the air inlet pipe 12, in addition, the meshes can further throttle and evaporate the refrigerant, and the evaporated refrigerant gas enters the air outlet pipe 13.

Preferably, the gas-liquid separation reservoir further comprises a partition plate 17, the partition plate 17 is mounted inside the housing 11, the gas-liquid separation tube 14 and the U-shaped liquid tube 15 penetrate through the partition plate 17, and the partition plate 17 is provided with a vent hole. In certain cases, the liquid refrigerant in the gas-liquid separation reservoir may generate bubbles, which may enter the compressor body 2 through the gas outlet pipe 13, thereby damaging the lubrication of the compressor body 2 and causing the compressor body 2 to throw oil. The baffle 17 is arranged in the gas-liquid separation liquid reservoir, so that the problems can be well solved, and the normal operation of the compressor body 2 is ensured.

Preferably, the gas-liquid separation pipe 14 is provided with oil return holes 141, and alternatively, the number of the oil return holes 141 may be one or more. In the running process of the air conditioning system or the heat pump system, certain lubricating oil can be fused into the liquid refrigerant in the gas-liquid separation liquid reservoir, so that the lubricating oil returns to the compressor body 2, and the working state of the compressor body 2 can be ensured. Further, in order to ensure that the lubricating oil returned into the compressor body 2 is free from foreign substances, a filter member, which may be a filter screen in particular, is provided at the 141 orifice of the oil return hole.

As shown in fig. 4, an embodiment of the present utility model provides an air conditioning system and a heat pump system, which specifically includes a compressor body 2, a condenser 3, an evaporator 4, and a gas-liquid separation liquid reservoir, wherein an air inlet pipe 12 of the gas-liquid separation liquid reservoir is communicated with the evaporator 4 through a pipeline, an air outlet pipe 13 of the gas-liquid separation liquid reservoir is communicated with the compressor body 2, the compressor body 2 is communicated with the condenser 3 through a pipeline, the condenser 3 is communicated with a liquid inlet of the gas-liquid separation liquid reservoir through a pipeline, and a liquid outlet of the gas-liquid separation liquid reservoir is communicated with the evaporator 4 through a pipeline. Specifically, when the air conditioning system or the heat pump system works, the refrigerant is compressed by the compressor body 2, the compressed refrigerant becomes a high-temperature and high-pressure overheated gaseous refrigerant, the overheated gaseous refrigerant flows into the condenser 3 through a pipeline, the high-pressure and middle-temperature supercooled liquid refrigerant is cooled by the condenser 3, the high-pressure and middle-temperature supercooled liquid refrigerant flows into the liquid inlet of the gas-liquid separation liquid storage device through the pipeline, flows out of the liquid outlet through the U-shaped liquid pipe 15, and then enters the evaporator 4 through the pipeline to absorb heat and raise temperature, becomes a low-temperature overheated gas refrigerant after being heated, and enters the low-temperature overheated gas refrigerant through the pipeline and the air inlet pipe 12 of the gas-liquid separation liquid storage device, and returns to the compressor body 2 through the air outlet pipe 13. In this embodiment, the U-shaped liquid tube 15 of the gas-liquid separation liquid reservoir is respectively communicated with the condenser 3 and the evaporator 4, and when the high-pressure medium-temperature liquid refrigerant flowing out through the condenser 3 flows through the U-shaped liquid tube 15, heat is transferred to the U-shaped liquid tube 15 to raise the temperature of the liquid refrigerant, and the liquid refrigerant in the gas-liquid separation liquid reservoir contacts with the U-shaped liquid tube 15, so that the heat of the U-shaped liquid tube 15 is absorbed to evaporate into a gaseous refrigerant, and the superheat degree in the gas-liquid separation liquid reservoir is ensured. In this embodiment, only one U-shaped liquid pipe 15 is added to communicate with the condenser 3 and the evaporator 4 without increasing the external structure, i.e., the liquid impact problem of the compressor is effectively prevented, and the safety of the system is improved while the production cost is not increased.

As shown in fig. 4, the air conditioning system or the heat pump system further includes a throttling element 5, and the throttling element 5 is disposed in a communication pipeline between a liquid outlet of the gas-liquid separation liquid reservoir and the evaporator 4. The throttling element 5 can reduce the pressure of the high-pressure liquid refrigerant flowing out from the liquid outlet so that the liquid refrigerant entering the evaporator 4 absorbs heat and evaporates under low pressure, and in addition, the throttling element 5 can also adjust the flow of the liquid refrigerant entering the evaporator 4 so as to adapt to the load change of the evaporator 4 and ensure the normal operation of the system. Further, the throttling element 5 is a capillary tube, which is commonly used in smaller refrigeration devices; the above-mentioned throttling element 5 may furthermore be a throttle valve, which is commonly used in larger refrigeration devices, in particular a manual expansion valve, a floating ball regulating valve or a thermal expansion valve.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A gas-liquid separation reservoir comprising:

a housing (11), an air inlet pipe (12) and an air outlet pipe (13) which are communicated with the housing, and a gas-liquid separation pipe (14) which is arranged inside the housing (11) and is communicated with the air outlet pipe (13);

characterized by further comprising:

the liquid cooling device comprises a U-shaped liquid pipe (15), wherein at least part of the U-shaped liquid pipe (15) is located inside the shell (11) and is in contact with liquid refrigerant in the shell (11), a liquid inlet and a liquid outlet of the U-shaped liquid pipe (15) are both extended out of the shell (11), the liquid inlet is used for being communicated with a liquid outlet of the condenser (3), and the liquid outlet is used for being communicated with a liquid inlet of the evaporator (4).

2. A gas-liquid separation reservoir according to claim 1, characterized in that the portion of the U-shaped liquid tube (15) located in the housing (11) is helical.

3. The gas-liquid separation reservoir according to claim 1, characterized in that the liquid inlet and the liquid outlet of the U-shaped liquid pipe (15) are both arranged on the same side as the air inlet pipe (12).

4. The gas-liquid separation reservoir according to claim 1, further comprising a filter screen (16), wherein the filter screen (16) is mounted inside the housing (11) and is disposed between the gas inlet pipe (12) and the gas-liquid separation pipe (14), and wherein the filter screen (16) is configured to filter a gaseous refrigerant entering from the gas inlet pipe (12).

5. The gas-liquid separation reservoir according to claim 1, further comprising a partition plate (17), wherein the partition plate (17) is installed inside the housing (11), the gas-liquid separation tube (14) and the U-shaped liquid tube (15) penetrate through the partition plate (17), and the partition plate (17) is provided with a vent hole.

6. The gas-liquid separation reservoir according to claim 1, characterized in that the gas-liquid separation tube (14) is provided with an oil return hole (141).

7. The gas-liquid separation reservoir according to claim 6, characterized in that a filter is provided at the orifice of the oil return hole (141).

8. An air conditioning system comprising the gas-liquid separation reservoir according to any one of claims 1 to 7, and

compressor body (2), condenser (3) and evaporimeter (4), gas-liquid separation reservoir intake pipe (12) pass through the pipeline with evaporimeter (4) intercommunication, gas-liquid separation reservoir outlet duct (13) with compressor body (2) intercommunication, compressor body (2) pass through the pipeline with condenser (3) intercommunication, condenser (3) pass through the pipeline with gas-liquid separation reservoir inlet intercommunication, gas-liquid separation reservoir the liquid outlet pass through the pipeline with evaporimeter (4) intercommunication.

9. A heat pump system comprising the gas-liquid separation reservoir according to any one of claims 1 to 7, and

10. The heat pump system according to claim 9, further comprising a throttling element (5), the throttling element (5) being arranged in a communication line of the liquid outlet and the evaporator (4).