CN212006316U - Heat exchanger, gas-liquid separator and refrigerating system - Google Patents
Heat exchanger, gas-liquid separator and refrigerating system Download PDFInfo
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- CN212006316U CN212006316U CN202020505740.1U CN202020505740U CN212006316U CN 212006316 U CN212006316 U CN 212006316U CN 202020505740 U CN202020505740 U CN 202020505740U CN 212006316 U CN212006316 U CN 212006316U
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Abstract
The utility model relates to a heat exchanger, a gas-liquid separator and a refrigerating system, wherein the heat exchanger comprises a container body with an inlet pipe and an outlet pipe and a heat exchange assembly arranged in the container body, the heat exchange assembly comprises a plurality of heat exchange pipes, the heat exchange pipes are in annular column shape, and the plurality of heat exchange pipes are sleeved with the inner and outer sleeves; the fins are connected to the outer surface of the outermost heat exchange tube, between two adjacent heat exchange tubes and on the inner surface of the innermost heat exchange tube; the distribution tube group is communicated with a plurality of heat exchange tubes. The gas-liquid separator comprises a heat exchanger, the innermost heat exchange tube is plugged towards one end of the inlet tube through a sealing cover, and the outlet tube extends into the inner side of the innermost heat exchange tube. The refrigerating system comprises a compressor, a condenser, an expansion valve, an evaporator and a gas-liquid separator. The utility model has greatly improved heat exchange performance, compact structure and reduced cost; the refrigeration performance is improved; 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 heat exchanger, vapour and liquid separator, refrigerating system.
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 heat exchanger.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a heat exchanger comprises a container body, an inlet pipe and an outlet pipe which are communicated with the container body, and a heat exchange assembly arranged in the container body, wherein the inlet pipe and the outlet pipe are respectively positioned at two sides of the heat exchange assembly;
the heat exchange tubes are in an annular column shape and are sleeved with the inside and the outside;
the fins are connected to the outer surface of the heat exchange tube on the outermost side, between two adjacent heat exchange tubes and on the inner surface of the heat exchange tube on the innermost side;
and the distribution pipe group is communicated with the plurality of heat exchange pipes.
Preferably, the dispensing tube set comprises:
the upper ends and the lower ends of the heat exchange tubes are respectively provided with the end tubes, and the end tubes are communicated with the heat exchange tubes;
the distributor is communicated with the end pipe at one end;
one end of the connecting pipe is communicated with the distributor, and the other end of the connecting pipe extends out of the container body.
Preferably, the heat exchange assembly further comprises an inner cylinder, the inner cylinder is located in the heat exchange tube at the innermost side, and the fins are connected between the heat exchange tube at the innermost side and the inner cylinder.
Further preferably, one end of the inner cylinder facing the inlet pipe is sealed by a sealing cover.
Further preferably, the cover is a flat cover or a convex cover protruding to one side of the inlet pipe.
Preferably, the heat exchange assembly further comprises an outer barrel, the outer barrel is positioned outside the heat exchange tube on the outermost side, and the fins are connected between the heat exchange tube on the outermost side and the outer barrel.
Preferably, the axis of the heat exchange tube is consistent with the extending direction of the axis of the container body.
Further preferably, the plurality of heat exchange tubes are concentrically sleeved and are in a circular ring shape.
The heat exchange tube is a micro-channel heat exchange tube; the fins are window opening plates, corrugated plates or bridge plates.
A heat exchanger comprises a container body, an inlet pipe and an outlet pipe which are communicated with the container body, and a heat exchange assembly arranged in the container body, wherein the inlet pipe and the outlet pipe are respectively positioned at two sides of the heat exchange assembly;
the heat exchange tube is in a spiral column shape;
the fins are connected to the outer surface of the outermost circle of heat exchange tubes, between two adjacent circles of heat exchange tubes and on the inner surface of the innermost circle of heat exchange tubes;
and the distribution pipe group is communicated with the heat exchange pipe.
An object of the utility model is to provide a vapour and liquid separator.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the gas-liquid separator comprises the heat exchanger, wherein the innermost heat exchange tube faces one end of the inlet tube and is sealed by a sealing cover, and the outlet tube extends into the innermost heat exchange tube.
Preferably, the heat exchange assembly further comprises an inner cylinder, the inner cylinder is located in the innermost heat exchange tube, the outlet tube extends into the innermost inner side of the inner cylinder, and the tube diameter of the outlet tube is 1/2 of the inner diameter of the inner cylinder.
Preferably, the distance between the outlet pipe and the sealing cover is 1-2 times of the outer diameter of the air outlet pipe.
It is an 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, 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.
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.
Further preferably, the outlet superheat degree 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.
Preferably, the inlet or the outlet of the gas-liquid separator is provided with a saturation temperature monitoring component for monitoring the saturation temperature.
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 first schematic diagram of a heat exchanger according to the present embodiment;
FIG. 2 is a schematic top view of the heat exchange assembly of this embodiment (without the outer cartridge);
FIG. 3 is a schematic top view of the heat exchange assembly (including the outer tube) in this embodiment;
FIG. 4 is a schematic view of the connection between the end pipe and the heat exchange pipe in this embodiment;
FIG. 5 is a schematic view of a gas-liquid separator in the present embodiment;
FIG. 6 is a schematic diagram of the refrigeration system of the present embodiment;
fig. 7 is a schematic diagram of a heat exchanger in the present embodiment.
Wherein: 1. a container body; 10. an inlet pipe; 11. an outlet pipe; 20. a heat exchange pipe; 21. an inner barrel; 210. sealing the cover; 22. an outer cylinder; 23. a fin; 240. an end tube; 241a, 241b, a distributor; 242a, 242b, connecting tubes; 3. a gas-liquid separator 4 and a compressor; 5. a condenser; 6. an expansion valve; 7. an evaporator.
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.
A heat exchanger as shown in fig. 1-4 comprises a cylindrical container body 1, an inlet pipe 10 and an outlet pipe 11 communicated with the container body 1, and a heat exchange assembly arranged inside the container body 1, wherein the inlet pipe 10 and the outlet pipe 11 are respectively positioned at two sides of the heat exchange assembly, the inlet pipe 10 is positioned at the upper part of the container body 1, and the outlet pipe 11 is positioned at the lower part of the container body 1.
The heat exchange assembly comprises a plurality of heat exchange tubes 20, an inner cylinder 21, an outer cylinder 22, fins 23 and a distribution tube group. The inner cylinder 21 and the outer cylinder 22 can be arranged as required, and specifically:
the plurality of heat exchange tubes 20 are cylindrical and are concentrically sleeved with each other. As for the direction in which the axis of the heat exchange tube 20 inside the container body 1 coincides with the direction in which the axis of the container body 1 extends, this embodiment is coincident. The heat exchange tube 20 is formed by extrusion molding through a die and is formed by rolling a flat plate having a heat exchange flow passage, and the flat plate may be formed by combining a plurality of small flat plates. The heat exchange tube 20 is a micro-channel heat exchange tube, the flow channels are parallel, and the thickness is 1-3 mm, preferably 1.5 mm.
The inner cylinder 21 and the outer cylinder 22 are both cylindrical, the inner cylinder 21 is positioned in the innermost heat exchange tube 20, and the outer cylinder 22 is positioned outside the outermost heat exchange tube 20. The end of the inner cylinder 21 facing the inlet pipe 10 is closed by a cover 210, and the cover 210 is a flat cover or a convex cover protruding to the inlet pipe 10 side.
The fins 23 are connected between the outer tube 22 and the outermost heat exchange tube 20, between two adjacent heat exchange tubes 20, and between the innermost heat exchange tube 20 and the inner tube 22. The fins 23 are corrugated, preferably sinusoidal, or are louvered or louvered-like bridges.
The distribution tube group is in communication with a plurality of heat exchange tubes 20. The dispensing tube set includes an end tube 240, dispensers 241a, 241b, and connecting tubes 242a, 242 b. The upper and lower ends of the plurality of heat exchange tubes 20 are respectively provided with an end tube 240, the end tube 240 is communicated with the heat exchange tubes 20, distributors 241a and 241b are communicated with the end tube 240 at one end, one ends of connection tubes 242a and 242b are communicated with the distributors 241a and 241b, and the other ends of the connection tubes 241a and 241b are protruded out of the container body 1.
The heat exchanger of the embodiment has another extension structure: wherein the heat exchange tube 20 is spirally columnar, and the fins 23 are connected to the outer surface of the outermost heat exchange tube 20, between two adjacent turns of the heat exchange tube 20, and the inner surface of the innermost heat exchange tube 20, as shown in fig. 7.
The following describes the manufacturing method of the heat exchanger in this embodiment specifically:
s1: a bottom tool is adopted, the bottom tool is provided with a circular groove for placing the heat exchange tube 20, the inner cylinder 21 and the outer cylinder 22, the heat exchange tube 20, the inner cylinder 21 and the outer cylinder 22 are fixed in the groove of the bottom tool,
s2: fins 23 of corresponding lengths are arranged between the outer tube 22 and the outermost heat exchange tube 20, between two adjacent heat exchange tubes 20, between the innermost heat exchange tube 20 and the inner tube 21,
s3: a distribution pipe group is connected to the heat exchange pipe 20, specifically: the slotted end tube 240 is fitted over the heat exchange tube 20, the manifolded dispenser 24 is inserted into the opening of the end tube 240,
s4: taking down the bottom tooling, putting the heat exchange assembly into a brazing furnace to be welded into a whole,
s5: the heat exchange unit is installed in the vessel body 1 having the inlet pipe 10 and the outlet pipe 11, and the other ends of the connection pipes 241a and 241b are led out of the vessel body 1.
When in use: the heat exchanger 20 is filled with cooling water, the container body 1 is filled with high-temperature air which can be used for cooling compressed air, the heat exchanger 20 is filled with refrigerant liquid, and the container body 1 is filled with refrigerant gas which can be used for a heat regenerator of a refrigerant system.
As shown in FIG. 5, the gas-liquid separator comprises a heat exchanger, several innermost heat exchange tubes 20 in the heat exchange assembly can be removed, so that the inner diameter of the innermost heat exchange tubes 20 is 2 times of the outer diameter of an outlet tube 11, one end of the innermost heat exchange tubes 20 facing an inlet tube 10 is sealed by a sealing cover 210, so that the outlet tube 11 extends to the inner side of the innermost heat exchange tubes 20, and the distance between the outlet tube 11 and the sealing cover 210 is 1-2 times of the outer diameter of the outlet tube 11.
As shown in fig. 6, a refrigeration system includes a compressor 4, a condenser 5, an expansion valve 6, an evaporator 7, and a gas-liquid separator 3, an outlet of the compressor 4 is communicated with the condenser 5, an outlet of the condenser 5 is communicated with an inlet connection pipe 242a of a heat exchange assembly, an outlet connection pipe 242b of the heat exchange assembly 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 3, and an outlet of the gas-liquid separator 3 is communicated with an inlet of the compressor 4.
The inlet and the outlet of the gas-liquid separator 3 are respectively provided with temperature monitoring components, such as temperature sensors, for monitoring the temperature of the inlet and the outlet. The inlet and the outlet of the gas-liquid separator 3 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 3 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.
The inlet connection pipe 242a and the outlet connection pipe 242b of the heat exchange unit may be provided with temperature detection means for detecting the inlet and outlet temperatures, respectively. The temperature difference values of the inlet connecting pipe 242a and the outlet connecting pipe 242b of the heat exchange assembly are X in a standard test, and when the unit runs, if the temperature difference value of the inlet and the outlet is lower than X/2, a fault warning is carried out: lack of refrigerant.
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 (18)
1. The utility model provides a heat exchanger, includes container body, with the container body be linked together import pipe and outlet pipe and set up and be in the inside heat exchange assemblies of container body, import pipe, outlet pipe be located respectively heat exchange assemblies's both sides, its characterized in that: the heat exchange assembly comprises;
the heat exchange tubes are in an annular column shape and are sleeved with the inside and the outside;
the fins are connected to the outer surface of the heat exchange tube on the outermost side, between two adjacent heat exchange tubes and on the inner surface of the heat exchange tube on the innermost side;
and the distribution pipe group is communicated with the plurality of heat exchange pipes.
2. The heat exchanger of claim 1, wherein: the dispensing tube set includes:
the upper ends and the lower ends of the heat exchange tubes are respectively provided with the end tubes, and the end tubes are communicated with the heat exchange tubes;
the distributor is communicated with the end pipe at one end;
one end of the connecting pipe is communicated with the distributor, and the other end of the connecting pipe extends out of the container body.
3. The heat exchanger of claim 1, wherein: the heat exchange assembly further comprises an inner barrel, the inner barrel is located at the innermost side in the heat exchange tube, and the fins are connected between the heat exchange tube at the innermost side and the inner barrel.
4. The heat exchanger of claim 3, wherein: one end of the inner cylinder, which faces the inlet pipe, is sealed by a sealing cover.
5. The heat exchanger of claim 4, wherein: the sealing cover is a flat cover or a convex cover protruding towards one side of the inlet pipe.
6. The heat exchanger of claim 1, wherein: the heat exchange component further comprises an outer barrel, the outer barrel is located outside the heat exchange tube on the outermost side, and the fins are connected between the heat exchange tube on the outermost side and the outer barrel.
7. The heat exchanger of claim 1, wherein: the axial lead of the heat exchange tube is consistent with the extension direction of the axial lead of the container body.
8. The heat exchanger of claim 1, wherein: the heat exchange tubes are concentrically sleeved and are in a ring shape.
9. The heat exchanger of claim 1, wherein: the heat exchange tube is a micro-channel heat exchange tube; the fins are window opening plates, corrugated plates or bridge plates.
10. The utility model provides a heat exchanger, includes container body, with the container body be linked together import pipe and outlet pipe and set up and be in the inside heat exchange assemblies of container body, import pipe, outlet pipe be located respectively heat exchange assemblies's both sides, its characterized in that: comprises the following steps of;
the heat exchange tube is in a spiral column shape;
the fins are connected to the outer surface of the outermost circle of heat exchange tubes, between two adjacent circles of heat exchange tubes and on the inner surface of the innermost circle of heat exchange tubes;
and the distribution pipe group is communicated with the heat exchange pipe.
11. A gas-liquid separator characterized by: the gas-liquid separator comprises the heat exchanger as claimed in any one of claims 1 to 9, one end, facing the inlet pipe, of the innermost heat exchange pipe is sealed by a sealing cover, and the outlet pipe extends into the inner side of the innermost heat exchange pipe.
12. The gas-liquid separator of claim 11, wherein: the heat exchange assembly further comprises an inner barrel, the inner barrel is located at the innermost side in the heat exchange tube, the outlet tube extends into the innermost side of the inner barrel, and the diameter of the outlet tube is 1/2 of the inner diameter of the inner barrel.
13. The gas-liquid separator of claim 11, wherein: the distance between the outlet pipe and the sealing cover is 1-2 times of the outer diameter of the outlet pipe.
14. 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 as claimed in any one of claims 11 to 13, 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.
15. The refrigeration system of claim 14, 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.
16. The refrigeration system of claim 15, 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.
17. The refrigeration system of claim 16, 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.
18. The refrigeration system of claim 14, 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020505740.1U CN212006316U (en) | 2020-04-09 | 2020-04-09 | Heat exchanger, gas-liquid separator and refrigerating system |
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| CN202020505740.1U CN212006316U (en) | 2020-04-09 | 2020-04-09 | Heat exchanger, gas-liquid separator and refrigerating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365905A (en) * | 2020-04-09 | 2020-07-03 | 上海泰达冷暖科技有限公司 | Heat exchanger, gas-liquid separator, refrigerating system, manufacturing method and application of heat exchanger |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365905A (en) * | 2020-04-09 | 2020-07-03 | 上海泰达冷暖科技有限公司 | Heat exchanger, gas-liquid separator, refrigerating system, manufacturing method and application of heat exchanger |
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