CN212006322U - Gas-liquid separator with heat regeneration function and refrigerating system - Google Patents
Gas-liquid separator with heat regeneration function and refrigerating system Download PDFInfo
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- CN212006322U CN212006322U CN202020506477.8U CN202020506477U CN212006322U CN 212006322 U CN212006322 U CN 212006322U CN 202020506477 U CN202020506477 U CN 202020506477U CN 212006322 U CN212006322 U CN 212006322U
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Abstract
The utility model relates to a vapour and liquid separator with backheat function, including vessel, intake pipe and outlet duct and setting at the inside heat exchanger of vessel, at least partial heat exchanger is located between the export of intake pipe, the entry of outlet duct, and vapour and liquid separator is still including setting up at this internal water conservancy diversion subassembly of vessel, and water conservancy diversion subassembly sets up between vessel and heat exchanger. The refrigerating system comprises a compressor, a condenser, an expansion valve, an evaporator and a gas-liquid separator with a heat regeneration function, wherein an outlet of the condenser is communicated with an inlet of the heat exchanger, an outlet of the heat exchanger is communicated with an inlet of the expansion valve, an outlet of the evaporator is communicated with an inlet of the gas-liquid separator, and an outlet of the gas-liquid separator is communicated with an inlet of the compressor. The utility model has greatly improved heat exchange performance, compact structure and reduced cost; the pressure drop of the gas side is greatly reduced, which is beneficial to improving the refrigeration performance; the control is optimized, and the refrigeration performance is further improved.
Description
Technical Field
The utility model relates to a refrigeration technology field especially relates to a vapour and liquid separator and refrigerating system with backheat function.
Background
The heat regenerator can avoid liquid carried by a compressor, improves the refrigerating capacity and the energy efficiency ratio, and related companies adopt the plate heat exchanger as the heat regenerator, wherein one side of the plate heat exchanger is used for feeding liquid refrigerant, and the other side of the plate heat exchanger is used for feeding gas refrigerant. A preferred regenerator is in the form of a belt vessel. Liquid refrigerant flows through the heat exchange tube of the heat exchanger, and gaseous refrigerant flows through the large flow area outside the heat exchange tube. The arrangement of the regenerator and the gas-liquid separator together can make the structure more compact.
The conventional gas-liquid separator with the heat-returning function adopts a high-tooth pipe, high-temperature liquid refrigerant flows in the pipe, low-temperature gas refrigerant flows out of the pipe, and the return gas of a compressor cannot uniformly wash the high-tooth pipe, so that the heat exchange area of the high-tooth pipe is wasted. In addition, after the gas-liquid separator with the back heating function is adopted, the expansion valve is controlled by maintaining the superheat degree of the outlet of the existing evaporator, which is not optimal and needs to be further optimized according to the system.
Disclosure of Invention
An object of the utility model is to provide a vapour and liquid separator with backheat function.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the gas-liquid separator with the heat return function comprises a container body, an air inlet pipe, an air outlet pipe and a heat exchanger, wherein the air inlet pipe and the air outlet pipe are communicated with the container body, the heat exchanger is arranged in the container body, an inlet pipe and an outlet pipe of the heat exchanger penetrate out of the container body, at least part of the heat exchanger is positioned between an outlet of the air inlet pipe and an inlet of the air outlet pipe, the gas-liquid separator further comprises a flow guide assembly arranged in the container body, and the flow guide assembly is arranged between the container body and the heat exchanger.
Preferably, the flow guide assembly comprises a baffle.
Further preferably, when the container body is cylindrical, the baffle is semicircular.
Further preferably, the container body and the heat exchanger are horizontally arranged, the baffle plates are vertically arranged, and the baffle plates are respectively arranged above or below two ends of the heat exchanger.
Further preferably, the air inlet pipe and the air outlet pipe are arranged on the left side and the right side of the container body, and the outlet of the air inlet pipe is located between the baffles at the two ends of the heat exchanger.
Further preferably, the container body and the heat exchanger are arranged vertically, the baffles are arranged horizontally, the baffles are respectively arranged on two sides of the heat exchanger, and the baffles on two sides are arranged in a staggered manner in the vertical direction.
Further preferably, the air inlet pipe and the air outlet pipe are respectively arranged at the top or the upper part, the bottom or the lower part of the container body.
Preferably, the heat exchanger is a micro-channel heat exchanger, a finned tube heat exchanger or a light pipe heat exchanger.
Further preferably, when the heat exchanger is a microchannel heat exchanger or a finned tube heat exchanger, the cross section of the microchannel heat exchanger or the finned tube heat exchanger is square, and the length of a diagonal line of the square is equal to the length of the inner diameter of the container body.
Preferably, the bottom of the container body is provided with an oil return hole.
It is another object of the present invention to provide a refrigeration system.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a refrigerating system comprises a compressor, a condenser, an expansion valve and an evaporator, and further comprises a gas-liquid separator with a heat return function, wherein an outlet of the compressor is communicated with the condenser, an outlet of the condenser is communicated with an inlet of the heat exchanger, an outlet of the heat exchanger is communicated with an inlet of the expansion valve, an outlet of the expansion valve is communicated with an inlet of the evaporator, an outlet of the evaporator is communicated with an inlet of the gas-liquid separator, and an outlet of the gas-liquid separator is communicated with an inlet of the compressor.
Preferably, the inlet and the outlet of the gas-liquid separator are respectively provided with a temperature monitoring component for monitoring the temperature of the inlet and the outlet.
Preferably, the inlet and the outlet of the gas-liquid separator are respectively provided with a saturation temperature monitoring component for monitoring the saturation temperature of the inlet and the outlet.
Further preferably, the expansion valve is in communication connection with the temperature monitoring component and is used for monitoring the outlet superheat degree of the gas-liquid separator, and when the outlet superheat degree of the gas-liquid separator is in an optimal state and the inlet superheat degree of the gas-liquid separator is equal to 0, the opening degree of the expansion valve is controlled by taking the outlet superheat degree of the gas-liquid separator as a control target; and when the outlet superheat degree of the gas-liquid separator is in an optimal state and the inlet superheat degree of the gas-liquid separator is more than 0, controlling the opening degree of the expansion valve by taking the inlet superheat degree of the gas-liquid separator as a control target.
Preferably, the outlet superheat degree of the gas-liquid separator is in an optimal state, so that the energy efficiency ratio of the unit is optimal, the refrigerating capacity is optimal, or the heating capacity is optimal.
Because of the application of the technical scheme, compared with the prior art, the utility model have following advantage and effect:
1. the heat exchange performance is greatly improved, the structure is compact, and the cost is reduced;
2. the pressure drop of the gas side is greatly reduced, which is beneficial to improving the refrigeration performance;
3. the control is optimized, and the refrigeration performance is further improved.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
FIG. 2 is a schematic structural diagram of the second embodiment;
FIG. 3 is a schematic structural diagram of the third embodiment;
fig. 4 is a schematic diagram showing the relationship of the refrigeration system in this embodiment.
Wherein: 1. a container body; 10. an air inlet pipe; 11. an air outlet pipe; 12. an oil return hole; 2. a heat exchanger; 3. a baffle plate; 4. a compressor; 5. a condenser; 6. an expansion valve; 7. an evaporator; 8. a gas-liquid separator.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1, the gas-liquid separator with the heat recovery function includes a container body 1, an inlet pipe 10 and an outlet pipe 11 communicated with the container body 1, and a heat exchanger 2 disposed inside the container body 1, wherein an inlet pipe and an outlet pipe of the heat exchanger 2 penetrate through the container body 1, and at least a part of the heat exchanger 2 is located between an outlet of the inlet pipe 10 and an inlet of the outlet pipe 11.
The heat exchanger 2 is a micro-channel heat exchanger, or a finned tube heat exchanger, or a light pipe heat exchanger, etc. When the heat exchanger 2 is a micro-channel heat exchanger or a finned tube heat exchanger, the cross section of the micro-channel heat exchanger or the finned tube heat exchanger is square, and the length of a diagonal line of the square is equal to the length of the inner diameter of the container body 1; when the heat exchanger 2 is a light pipe heat exchanger, the turbulent flow of the air flow inside is realized through the baffle plate, and meanwhile, the oil flows down along the gravity. Therefore, the bottom of the container body 1 is provided with an oil return hole 12.
The gas-liquid separator also comprises a flow guide assembly arranged in the container body 1, the flow guide assembly is arranged between the container body 1 and the heat exchanger 2, the refrigerant uniformly penetrates through the heat exchanger 2 and is uniformly washed away, the heat exchange efficiency of the gas side is ensured, and the refrigerant flows out from the gas outlet pipe 11. In the embodiment, the flow guiding assembly comprises the baffle 3, the baffle 3 can be determined according to the shape of the container body 1 and the shape of the heat exchanger 2, and if the container body 1 is cylindrical, the baffle 3 can be semicircular.
Specifically, the method comprises the following steps: the container body 1 and the heat exchanger 2 are horizontally arranged, namely the gas-liquid separator is horizontal, the baffle 3 is vertically arranged (the surface where the baffle 3 is located extends along the vertical direction), the baffle 3 is respectively arranged above the two ends of the heat exchanger 2, and the upper half part of the container body 1, the heat exchanger 2 and the baffle 3 enclose an open space. The air inlet pipe 10 and the air outlet pipe 11 are arranged on the right side of the container body, the air inlet pipe 10 is located above the air outlet pipe 11, the air inlet pipe 10 penetrates through one baffle plate 3, the outlet of the air inlet pipe is located between the two baffle plates 3, and the inlet of the air outlet pipe 11 is close to the top of the container body 1. The air flow from the outlet of the inlet pipe 10 to the inlet of the outlet pipe 11 must pass through the heat exchanger 2, and the baffle 3 prevents the high-speed air flow from directly impacting the heat exchanger 2, so that the air flow on the heat exchanger 2 is not uniform. Of course, when the baffle plates 3 are respectively arranged below the two ends of the heat exchanger 2, the arrangement positions of the air inlet pipe 10 and the air outlet pipe 10 can be adjusted.
Example two:
as shown in fig. 2, the gas-liquid separator with the heat recovery function includes a container body 1, an inlet pipe 10 and an outlet pipe 11 communicated with the container body 1, and a heat exchanger 2 disposed inside the container body 1, wherein an inlet pipe and an outlet pipe of the heat exchanger 2 penetrate through the container body 1, and at least a part of the heat exchanger 2 is located between an outlet of the inlet pipe 10 and an inlet of the outlet pipe 11.
The heat exchanger 2 is a micro-channel heat exchanger, or a finned tube heat exchanger, or a light pipe heat exchanger, etc. When the heat exchanger 2 is a micro-channel heat exchanger or a finned tube heat exchanger, the cross section of the micro-channel heat exchanger or the finned tube heat exchanger is square, and the length of a diagonal line of the square is equal to the length of the inner diameter of the container body 1; when the heat exchanger 2 is a light pipe heat exchanger, the turbulent flow of the air flow inside is realized through the baffle plate, and meanwhile, the oil flows down along the gravity. Therefore, the bottom of the container body 1 is provided with an oil return hole 12.
The gas-liquid separator also comprises a flow guide assembly arranged in the container body 1, the flow guide assembly is arranged between the container body 1 and the heat exchanger 2, the refrigerant uniformly penetrates through the heat exchanger 2 and is uniformly washed away, the heat exchange efficiency of the gas side is ensured, and the refrigerant flows out from the gas outlet pipe 11. In the embodiment, the flow guiding assembly comprises the baffle 3, the baffle 3 can be determined according to the shape of the container body 1 and the shape of the heat exchanger 2, and if the container body 1 is cylindrical, the baffle 3 can be semicircular.
Specifically, the method comprises the following steps: the container body 1 and the heat exchanger 2 are vertically arranged, namely the gas-liquid separator is vertical, the baffle plates 3 are horizontally arranged (the surfaces where the baffle plates 3 are arranged extend along the horizontal direction), the baffle plates 3 are respectively arranged on two sides of the heat exchanger 2, and the baffle plates 3 on two sides are arranged in a staggered manner in the vertical direction. An air inlet pipe 10 is arranged at the upper part of the container body 1, and an inlet of an air outlet pipe 11 is arranged at the lower part of the heat exchanger 2. The airflow passes through the heat exchanger 2 from left to right under the baffling action of the baffle 3 and enters the lower part of the container body 1.
Example three:
as shown in fig. 3, the gas-liquid separator with the heat recovery function includes a container body 1, an inlet pipe 10 and an outlet pipe 11 communicated with the container body 1, and a heat exchanger 2 disposed inside the container body 1, wherein an inlet pipe and an outlet pipe of the heat exchanger 2 penetrate through the container body 1, and at least a part of the heat exchanger 2 is located between an outlet of the inlet pipe 10 and an inlet of the outlet pipe 11.
The heat exchanger 2 is a micro-channel heat exchanger, or a finned tube heat exchanger, or a light pipe heat exchanger, etc. When the heat exchanger 2 is a micro-channel heat exchanger or a finned tube heat exchanger, the cross section of the micro-channel heat exchanger or the finned tube heat exchanger is square, and the length of a diagonal line of the square is equal to the length of the inner diameter of the container body 1; when the heat exchanger 2 is a light pipe heat exchanger, the turbulent flow of the air flow inside is realized through the baffle plate, and meanwhile, the oil flows down along the gravity. Therefore, the bottom of the container body 1 is provided with an oil return hole 12.
The gas-liquid separator also comprises a flow guide assembly arranged in the container body 1, the flow guide assembly is arranged between the container body 1 and the heat exchanger 2, the refrigerant uniformly penetrates through the heat exchanger 2 and is uniformly washed away, the heat exchange efficiency of the gas side is ensured, and the refrigerant flows out from the gas outlet pipe 11. In the embodiment, the flow guiding assembly comprises the baffle 3, the baffle 3 can be determined according to the shape of the container body 1 and the shape of the heat exchanger 2, and if the container body 1 is cylindrical, the baffle 3 can be semicircular.
Specifically, the method comprises the following steps: the container body 1 and the heat exchanger 2 are vertically arranged, namely the gas-liquid separator is vertical, the baffle plates 3 are horizontally arranged (the surfaces where the baffle plates 3 are arranged extend along the horizontal direction), the baffle plates 3 are respectively arranged on two sides of the heat exchanger 2, and the baffle plates 3 on two sides are arranged in a staggered manner in the vertical direction. The air inlet pipe 10 is arranged at the bottom of the container body 1, and the inlet of the air outlet pipe 11 is arranged at the top of the container body 1. The airflow passes through the heat exchanger 2 from left to right through the baffling effect of the baffle 3 and enters the upper part of the container body 1.
As shown in fig. 4, a refrigeration system includes a compressor 4, a condenser 5, an expansion valve 6, an evaporator 7, and a gas-liquid separator 8 having a heat recovery function, an outlet of the compressor 4 is communicated with the condenser 5, an outlet of the condenser 5 is communicated with an inlet of the heat exchanger 2, an outlet of the heat exchanger 2 is communicated with an inlet of the expansion valve 6, an outlet of the expansion valve 6 is communicated with an inlet of the evaporator 7, an outlet of the evaporator 7 is communicated with an inlet of the gas-liquid separator 8, and an outlet of the gas-liquid separator 8 is communicated with an inlet of the compressor 4.
The inlet and the outlet of the gas-liquid separator 8 are respectively provided with temperature monitoring components, such as temperature sensors, for monitoring the inlet and outlet temperatures. The inlet and the outlet of the gas-liquid separator 8 are respectively provided with a saturation temperature monitoring component, such as a pressure sensor, for monitoring the saturation temperature of the inlet and the outlet. The expansion valve 6 is in communication connection with the temperature monitoring part and is used for monitoring the superheat degree of the outlet of the gas-liquid separator 8 so as to optimize the energy efficiency and the best superheat degree. When the inlet superheat degree is equal to 0 under the condition of the optimal outlet superheat degree, the opening degree of the expansion valve 6 is controlled by taking the outlet superheat degree as a control target; when the inlet superheat is greater than 0 in the case of the optimum outlet superheat, the opening degree of the expansion valve 6 is controlled with the inlet superheat as a control target.
When the gas-liquid separator with the heat regeneration function is used for freezing products, the pressure drop of air suction of a compressor is reduced, and the refrigerating capacity is improved; when the expansion valve is adjusted according to the suction superheat degree of the compressor, a small amount of liquid can be carried at the outlet of the evaporator, so that the superheat area is reduced, and the heat exchange effect is improved. By adopting the flow guide assembly, the refrigerant enters from the air inlet pipe and uniformly scours through the heat exchanger, so that the heat exchange efficiency of the air side is ensured, and the refrigerant flows out from the air outlet pipe.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (13)
1. The utility model provides a vapour and liquid separator with backheat function, includes the vessel, with the vessel be linked together intake pipe and outlet duct and set up and be in the inside heat exchanger of vessel, the import pipe of heat exchanger, outlet pipe wear out the vessel, its characterized in that: at least part of the heat exchanger is positioned between the outlet of the air inlet pipe and the inlet of the air outlet pipe, the gas-liquid separator also comprises a flow guide assembly arranged in the container body, and the flow guide assembly is arranged between the container body and the heat exchanger.
2. The gas-liquid separator with a heat recovery function according to claim 1, characterized in that: the flow guide assembly comprises a baffle plate.
3. The gas-liquid separator with a heat recovery function according to claim 2, characterized in that: the container body and the heat exchanger are horizontally arranged, the baffle plates are vertically arranged, and the baffle plates are respectively arranged above or below two ends of the heat exchanger.
4. The gas-liquid separator with a heat recovery function according to claim 3, characterized in that: the air inlet pipe and the air outlet pipe are arranged on the left side and the right side of the container body, and the outlet of the air inlet pipe is positioned between the baffles at the two ends of the heat exchanger.
5. The gas-liquid separator with a heat recovery function according to claim 2, characterized in that: the container body and the heat exchanger are vertically arranged, the baffles are horizontally arranged, the baffles are respectively arranged on two sides of the heat exchanger, and the baffles on two sides are arranged in a staggered mode in the vertical direction.
6. The gas-liquid separator with a heat recovery function according to claim 5, characterized in that: the air inlet pipe and the air outlet pipe are respectively arranged at the top or the upper part, the bottom or the lower part of the container body.
7. The gas-liquid separator with a heat recovery function according to claim 1, characterized in that: the heat exchanger is a micro-channel heat exchanger, or a finned tube heat exchanger, or a light pipe heat exchanger.
8. The gas-liquid separator with a heat recovery function according to claim 7, characterized in that: when the heat exchanger is a micro-channel heat exchanger or a finned tube heat exchanger, the cross section of the micro-channel heat exchanger or the finned tube heat exchanger is square, and the length of a diagonal line of the square is equal to the length of the inner diameter of the container body.
9. A refrigerating system comprises a compressor, a condenser, an expansion valve and an evaporator, and is characterized in that: the refrigeration system further comprises a gas-liquid separator with a heat recovery function according to any one of claims 1 to 8, wherein an outlet of the compressor is communicated with the condenser, an outlet of the condenser is communicated with an inlet of the heat exchanger, an outlet of the heat exchanger is communicated with an inlet of the expansion valve, an outlet of the expansion valve is communicated with an inlet of the evaporator, an outlet of the evaporator is communicated with an inlet of the gas-liquid separator, and an outlet of the gas-liquid separator is communicated with an inlet of the compressor.
10. The refrigeration system of claim 9, wherein: and the inlet and the outlet of the gas-liquid separator are respectively provided with a temperature monitoring component for monitoring the temperature of the inlet and the outlet.
11. The refrigeration system of claim 10, wherein: the expansion valve is in communication connection with the temperature monitoring part and is used for monitoring the outlet superheat degree of the gas-liquid separator, and when the outlet superheat degree of the gas-liquid separator is in an optimal state and the inlet superheat degree of the gas-liquid separator is equal to 0, the opening degree of the expansion valve is controlled by taking the outlet superheat degree of the gas-liquid separator as a control target; and when the outlet superheat degree of the gas-liquid separator is in an optimal state and the inlet superheat degree of the gas-liquid separator is more than 0, controlling the opening degree of the expansion valve by taking the inlet superheat degree of the gas-liquid separator as a control target.
12. The refrigeration system of claim 11, wherein: and the superheat degree of an outlet of the gas-liquid separator is in an optimal state, so that the energy efficiency ratio of a unit is optimal, the refrigerating capacity is optimal or the heating capacity is optimal.
13. The refrigeration system of claim 9, wherein: and a saturation temperature monitoring component for monitoring the saturation temperature is arranged at the inlet or the outlet of the gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020506477.8U CN212006322U (en) | 2020-04-09 | 2020-04-09 | Gas-liquid separator with heat regeneration function and refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020506477.8U CN212006322U (en) | 2020-04-09 | 2020-04-09 | Gas-liquid separator with heat regeneration function and refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212006322U true CN212006322U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020506477.8U Active CN212006322U (en) | 2020-04-09 | 2020-04-09 | Gas-liquid separator with heat regeneration function and refrigerating system |
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|---|---|
| CN (1) | CN212006322U (en) |
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2020
- 2020-04-09 CN CN202020506477.8U patent/CN212006322U/en active Active
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