CN113739601A - Novel heat exchanger structure and refrigerating system thereof - Google Patents
Novel heat exchanger structure and refrigerating system thereof Download PDFInfo
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- CN113739601A CN113739601A CN202110899126.7A CN202110899126A CN113739601A CN 113739601 A CN113739601 A CN 113739601A CN 202110899126 A CN202110899126 A CN 202110899126A CN 113739601 A CN113739601 A CN 113739601A
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- fluid
- flow
- tube body
- spiral
- heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/14—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically both tubes being bent
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a novel heat exchanger structure and a refrigerating system thereof, wherein the novel heat exchanger structure comprises a heat exchange tube, the heat exchange tube comprises an outer tube body and an inner tube body, the outer tube body is sleeved outside the inner tube body, and the outer tube body and the inner tube body are fixedly connected at intervals through a support body which does not influence the flow of fluid; the outer body is a hollow straight pipe, the inner body is a spiral pipe, the spiral pipe is of a solid or hollow structure, the inner wall of the outer body is provided with a spiral thread groove for screwing the spiral pipe, and a gap is reserved between the outer wall of the spiral pipe and the thread groove. The threaded structure on the inner wall of the outer pipe body increases the fluid circulation area and increases the heat exchange capacity; when fluid passes through the branch channel between the outer layer pipe body and the inner layer pipe body, the formed strong turbulent flow can enhance the heat exchange between the fluid and the wall surface, namely, the heat exchange coefficient inside is increased, the pressure drop can also be increased, and the effect of throttling and heat exchange at the same time is realized.
Description
Technical Field
The invention belongs to the technical field of heat exchangers, and particularly relates to a novel heat exchanger structure and a refrigerating system thereof.
Background
The heat exchanger is widely applied to various industrial departments of oil refining, chemical engineering, environmental protection, power generation, refrigeration, food processing, new energy utilization and the like as a general thermal process. However, many heat exchangers still have the problems that the heat exchange between media cannot be realized fully, the heat exchange area is not high, the heat exchange temperature difference between cold and hot media is not large, and the heat exchange efficiency is poor.
The refrigerator and the refrigerator products in the market at present mostly use light tube type heat exchangers, and only a few evaporators use threaded tube type evaporators. Industry is also actively seeking and developing more efficient heat exchanger structures, but has not advanced much in the last decade.
Disclosure of Invention
In order to solve the problems, the invention provides a novel heat exchanger structure and a refrigerating system thereof, which are reasonable in design, overcome the defects of the prior art and have good effects.
In order to achieve the above object 1, the present invention adopts the following technical solutions:
a novel heat exchanger structure comprises a heat exchange tube, wherein the heat exchange tube comprises an outer tube body and an inner tube body, the outer tube body is sleeved outside the inner tube body, and the outer tube body and the inner tube body are fixedly connected with each other in various places through a support body which does not influence the flow of fluid;
the outer body is a hollow straight pipe, the inner body is a spiral pipe, the spiral pipe is of a solid or hollow structure, the inner wall of the outer body is provided with a spiral thread groove for screwing the spiral pipe, and a gap is reserved between the outer wall of the spiral pipe and the thread groove.
Further, the spiral pipe is solid construction, is equipped with the first runner that supplies fluid flow between outer body inner wall and the inlayer body outer wall, and first runner includes mainstream passageway and tributary passageway.
Further, the spiral pipe is of a hollow structure, a second flow channel for fluid to flow is arranged between the inner wall of the outer pipe body and the outer wall of the inner pipe body, the second flow channel comprises a main flow channel and a branch flow channel, and a third flow channel for fluid to flow is arranged in the inner cavity of the inner pipe body.
Further, the main flow channel is a central axial channel formed by the annular spiral pipe, the branch flow channel is a channel formed by a gap between the spiral pipe and the thread groove, when the fluid flows through the branch flow channel, the flow direction of the fluid is forced to change, and the fluid flows out of the branch flow channel and is opposite to the fluid in the main flow channel, so that strong turbulent flow is formed.
Further, the flow direction of the fluid in the first flow channel is opposite to the flow direction of the fluid in the second flow channel.
Further, the cross section of the inner-layer pipe body is spindle-shaped or oval.
In order to achieve the above object 2, the present invention adopts the following technical solutions:
the utility model provides a refrigerating system, includes compressor, condenser, expansion valve, evaporimeter and throttle regenerator, throttle regenerator adopts as above, the spiral pipe is hollow structure's novel heat exchanger structure, condenser and expansion valve are connected gradually to the gas vent of compressor, the expansion valve with throttle regenerator's first runner entry linkage, first runner export and evaporimeter entry linkage, the evaporimeter export is connected with throttle regenerator's second runner entry, second runner export is connected with the induction port of compressor.
Furthermore, the throttled refrigerant flowing out of the expansion valve flows into a first flow channel of the throttling heat regenerator, the low-temperature low-pressure refrigerant flowing out of the evaporator flows into a second flow channel of the throttling heat regenerator, and heat exchange is carried out between the throttled refrigerant and the low-temperature low-pressure refrigerant, so that the temperature of the throttled refrigerant is further reduced.
The invention has the following beneficial technical effects:
1. the threaded structure of the inner wall of the outer pipe body increases the fluid circulation area and increases the heat exchange capacity.
2. When fluid passes through the branch channel between the outer layer pipe body and the inner layer pipe body, the formed strong turbulence can enhance the heat exchange between the fluid and the wall surface, namely, the heat exchange coefficient inside is increased, the pressure drop can also be increased, on one hand, the throttling length of the capillary tube can be shortened, on the other hand, the outlet temperature of the evaporator can be greatly reduced, and the effect of heat exchange while throttling is realized.
Drawings
FIG. 1 is a schematic cross-sectional view of an outer pipe body according to example 1 of the present invention;
FIG. 2 is a schematic view of an inner pipe body according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the fluid passage of the novel heat exchanger in example 1 of the present invention;
FIG. 4 is a schematic cross-sectional view of a novel heat exchanger in example 2 of the present invention;
FIG. 5 is a schematic view of the fluid passage of the novel heat exchanger in example 2 of the present invention;
FIG. 6 is a schematic view of a refrigeration system according to embodiment 3 of the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
example 1:
a novel heat exchanger structure comprises a heat exchange tube, wherein the heat exchange tube comprises an outer tube body and an inner tube body, the outer tube body is sleeved outside the inner tube body, and the outer tube body and the inner tube body are fixedly connected at intervals through a supporting body which does not influence the flow of fluid;
as shown in fig. 1-3, the outer tube is a hollow straight tube, the inner tube is a spiral tube, the spiral tube is a solid structure, the inner wall of the outer tube is provided with a spiral thread groove for screwing the spiral tube in, and a gap is left between the outer wall of the spiral tube and the thread groove.
Specifically, a first flow channel for fluid to flow is arranged between the inner wall of the outer-layer pipe body and the outer wall of the inner-layer pipe body, and the first flow channel comprises a main flow channel and a branch flow channel; the main flow channel is a central axis channel formed by a spiral pipe in a ring mode, the branch flow channel is a channel formed by a gap between the spiral pipe and the thread groove, when fluid flows through the branch flow channel, the flow direction of the fluid is forced to be changed, and the fluid is opposite to the fluid in the main flow channel after flowing out of the branch flow channel, so that strong turbulent flow is formed.
Specifically, the cross section of the inner-layer pipe body is oval.
Example 2:
a novel heat exchanger structure comprises a heat exchange tube, wherein the heat exchange tube comprises an outer tube body and an inner tube body, the outer tube body is sleeved outside the inner tube body, and the outer tube body and the inner tube body are fixed at intervals;
as shown in fig. 4-5, the outer tube is a hollow straight tube, the inner tube is a spiral tube, the spiral tube is of a hollow structure, the inner wall of the outer tube is provided with a spiral thread groove for screwing the spiral tube in, and a gap is left between the outer wall of the spiral tube and the thread groove.
Specifically, the outer layer pipe body and the inner layer pipe body are fixedly connected through a support body which does not influence the flow of the fluid.
Specifically, a first flow channel for fluid to flow is arranged between the inner wall of the outer-layer pipe body and the outer wall of the inner-layer pipe body, and the first flow channel comprises a main flow channel and a branch flow channel; the main flow channel is a central axial channel formed by a spiral pipe in a ring mode, the branch flow channel is a channel formed by a gap between the spiral pipe and the thread groove, when fluid flows through the branch flow channel, the flow direction of the fluid is forced to be changed, and the fluid is opposite to the fluid in the main flow channel after flowing out of the branch flow channel, so that strong turbulent flow is formed.
Specifically, the inner cavity of the inner-layer tube body is provided with a second flow passage for fluid to flow.
Specifically, the flow direction of the fluid in the first flow channel is opposite to the flow direction of the fluid in the second flow channel
Specifically, the cross section of the inner-layer pipe body is oval.
Example 3:
as shown in fig. 6, a refrigeration system further includes a compressor, a condenser, an expansion valve, an evaporator, and a throttling heat regenerator, where the throttling heat regenerator adopts the novel heat exchanger structure of embodiment 2, an exhaust port of the compressor is sequentially connected to the condenser and the expansion valve, the expansion valve is connected to a first flow channel inlet of the throttling heat regenerator, a first flow channel outlet is connected to an evaporator inlet, an evaporator outlet is connected to a second flow channel inlet of the throttling heat regenerator, and a second flow channel outlet is connected to an air suction port of the compressor.
Specifically, the throttled refrigerant flowing out of the expansion valve flows into a first flow channel of the throttling heat regenerator, the low-temperature low-pressure refrigerant flowing out of the evaporator flows into a second flow channel of the throttling heat regenerator, heat exchange is carried out between the throttled refrigerant and the low-temperature low-pressure refrigerant, the temperature of the throttled refrigerant is further reduced, and the throttling heat regeneration function can be realized due to the fact that large pressure drop exists at an inlet and an outlet of the heat regenerator.
The above is a complete implementation process of the present embodiment.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. A novel heat exchanger structure is characterized by comprising a heat exchange tube, wherein the heat exchange tube comprises an outer tube body and an inner tube body, the outer tube body is sleeved outside the inner tube body, and the outer tube body and the inner tube body are fixedly connected at intervals through a supporting body which does not influence the flow of fluid;
the outer pipe body is a hollow straight pipe, the inner pipe body is a spiral pipe, the spiral pipe is of a solid or hollow structure, a spiral thread groove for screwing the spiral pipe is formed in the inner wall of the outer pipe body, and a gap is reserved between the outer wall of the spiral pipe and the thread groove.
2. The novel heat exchanger structure of claim 1, wherein the spiral tube is a solid structure, a first flow passage for fluid to flow is arranged between the inner wall of the outer tube body and the outer wall of the inner tube body, and the first flow passage comprises a main flow passage and a branch flow passage.
3. The novel heat exchanger structure as claimed in claim 1, wherein the spiral tube is a hollow structure, a first flow passage for fluid to flow is provided between the inner wall of the outer tube body and the outer wall of the inner tube body, the first flow passage comprises a main flow passage and a branch flow passage, and a second flow passage for fluid to flow is provided in the inner cavity of the inner tube body.
4. A novel heat exchanger construction according to claim 2 or 3, characterized in that the primary flow passage is a central axial passage encircled by spiral tubes; the branch channel is formed by a gap between the spiral pipe and the thread groove, and when fluid flows through the branch channel, the flow direction of the fluid is forced to change, and the fluid flows out of the branch channel and is opposite to the fluid in the main channel, so that strong turbulent flow is formed.
5. The novel heat exchanger structure of claim 4, wherein the flow direction of the fluid in the first flow channel is opposite to the flow direction of the fluid in the second flow channel.
6. The novel heat exchanger structure as claimed in claim 1, wherein the cross section of the inner tube body is spindle-shaped or oval.
7. A refrigerating system is characterized by comprising a compressor, a condenser, an expansion valve, an evaporator and a throttling heat regenerator, wherein the throttling heat regenerator adopts the novel heat exchanger structure as claimed in claim 1, 3, 4 or 5, an exhaust port of the compressor is sequentially connected with the condenser and the expansion valve, the expansion valve is connected with a first flow channel inlet of the throttling heat regenerator, a first flow channel outlet is connected with an evaporator inlet, an evaporator outlet is connected with a second flow channel inlet of the throttling heat regenerator, and a second flow channel outlet is connected with an air suction port of the compressor.
8. The refrigeration system of claim 7, wherein the throttled refrigerant flowing from the expansion valve flows into a first flow channel of the throttle regenerator, the low-temperature and low-pressure refrigerant flowing from the evaporator flows into a second flow channel of the throttle regenerator, and heat exchange is performed between the throttled refrigerant and the low-temperature and low-pressure refrigerant, thereby further reducing the temperature of the throttled refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110899126.7A CN113739601B (en) | 2021-08-06 | 2021-08-06 | Heat exchanger structure and refrigerating system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110899126.7A CN113739601B (en) | 2021-08-06 | 2021-08-06 | Heat exchanger structure and refrigerating system thereof |
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| Publication Number | Publication Date |
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| CN113739601A true CN113739601A (en) | 2021-12-03 |
| CN113739601B CN113739601B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110899126.7A Active CN113739601B (en) | 2021-08-06 | 2021-08-06 | Heat exchanger structure and refrigerating system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440664A (en) * | 2021-12-30 | 2022-05-06 | 中国科学院宁波材料技术与工程研究所 | Heat exchanger device based on carbon-carbon composite material |
Citations (10)
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|---|---|---|---|---|
| CA936855A (en) * | 1971-05-12 | 1973-11-13 | Remcor Products Company | Water cooler heat exchanger |
| JPH07218159A (en) * | 1994-01-31 | 1995-08-18 | Sanyo Electric Co Ltd | Heat exchanger |
| CA2326558A1 (en) * | 1999-02-01 | 2000-08-10 | Ford-Werke Aktiengesellschaft | Integrated collector-heat transfer unit |
| JP2010185599A (en) * | 2009-02-10 | 2010-08-26 | Furukawa Electric Co Ltd:The | Heat exchanger, heat exchange system, and method for manufacturing heat exchanger |
| CN202109788U (en) * | 2011-06-08 | 2012-01-11 | 上海科米钢管有限公司 | Heat exchange equipment adopting spiral oval heat exchange tubes |
| CN204346219U (en) * | 2014-12-18 | 2015-05-20 | 海德尔节能技术股份有限公司 | A kind of heat exchange jackets |
| CN204787936U (en) * | 2015-05-28 | 2015-11-18 | 杭州职业技术学院 | Turbulent formula heat exchanger in two |
| CN105953434A (en) * | 2016-06-15 | 2016-09-21 | 佛山光腾新能源股份有限公司 | Heat exchanger of heat pump water heater |
| CN206222726U (en) * | 2016-08-03 | 2017-06-06 | 马明辉 | Heat exchanger tube |
| CN108413663A (en) * | 2018-04-25 | 2018-08-17 | 珠海格力电器股份有限公司 | Dispenser and air conditioner |
-
2021
- 2021-08-06 CN CN202110899126.7A patent/CN113739601B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA936855A (en) * | 1971-05-12 | 1973-11-13 | Remcor Products Company | Water cooler heat exchanger |
| JPH07218159A (en) * | 1994-01-31 | 1995-08-18 | Sanyo Electric Co Ltd | Heat exchanger |
| CA2326558A1 (en) * | 1999-02-01 | 2000-08-10 | Ford-Werke Aktiengesellschaft | Integrated collector-heat transfer unit |
| JP2010185599A (en) * | 2009-02-10 | 2010-08-26 | Furukawa Electric Co Ltd:The | Heat exchanger, heat exchange system, and method for manufacturing heat exchanger |
| CN202109788U (en) * | 2011-06-08 | 2012-01-11 | 上海科米钢管有限公司 | Heat exchange equipment adopting spiral oval heat exchange tubes |
| CN204346219U (en) * | 2014-12-18 | 2015-05-20 | 海德尔节能技术股份有限公司 | A kind of heat exchange jackets |
| CN204787936U (en) * | 2015-05-28 | 2015-11-18 | 杭州职业技术学院 | Turbulent formula heat exchanger in two |
| CN105953434A (en) * | 2016-06-15 | 2016-09-21 | 佛山光腾新能源股份有限公司 | Heat exchanger of heat pump water heater |
| CN206222726U (en) * | 2016-08-03 | 2017-06-06 | 马明辉 | Heat exchanger tube |
| CN108413663A (en) * | 2018-04-25 | 2018-08-17 | 珠海格力电器股份有限公司 | Dispenser and air conditioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440664A (en) * | 2021-12-30 | 2022-05-06 | 中国科学院宁波材料技术与工程研究所 | Heat exchanger device based on carbon-carbon composite material |
| CN114440664B (en) * | 2021-12-30 | 2023-11-24 | 中国科学院宁波材料技术与工程研究所 | Heat exchanger device based on carbon-carbon composite material |
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| CN113739601B (en) | 2023-03-14 |
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