CN111637775A - Phase change heat exchanger - Google Patents
Phase change heat exchanger Download PDFInfo
- Publication number
- CN111637775A CN111637775A CN202010402542.7A CN202010402542A CN111637775A CN 111637775 A CN111637775 A CN 111637775A CN 202010402542 A CN202010402542 A CN 202010402542A CN 111637775 A CN111637775 A CN 111637775A
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- China
- Prior art keywords
- heat exchange
- heat
- phase change
- energy storage
- exchange flow
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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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a phase-change heat transfer device, comprising: a housing; the phase change energy storage plate is used for absorbing or releasing heat to carry out solid-solid phase change; the first heat exchange flow channel is used for conveying a first heat exchange medium and exchanging heat with the phase change energy storage plate; the second heat exchange flow channel is used for conveying a second heat exchange medium and exchanging heat with the phase change energy storage plate; the phase change energy storage plate, the first heat exchange flow channel and the second heat exchange flow channel are located in the shell, and the phase change energy storage plate is in heat conduction with the first heat exchange flow channel and the second heat exchange flow channel respectively. The invention adopts the phase-change energy storage plate to conduct heat and store energy so as to improve the heat exchange efficiency.
Description
Technical Field
The invention belongs to the technical field of household appliances, and particularly relates to a phase-change heat exchange device.
Background
At present, a heat exchanger is widely applied to heat exchange of different media, and is widely applied to the fields of household heating, industrial heat exchange and the like. The heat exchanger is generally provided with two flow paths for different heat exchange media to flow, and the two flow paths can exchange heat with each other to realize heat exchange between two different heat exchange media.
The conventional heat exchanger is generally classified into a plate heat exchanger or a double pipe heat exchanger, and the working principle of the heat exchanger is that heat exchange media flow in different heat exchange pipelines, and the flowing heat exchange media transfer heat with each other to realize exchange. Taking a heat pump heating system as an example, a refrigerant in a heat pump unit in the heat pump heating system enters one heat exchange pipeline of a heat exchanger to flow, and water in a radiator enters the other heat exchange pipeline to flow. The refrigerant flowing into the heat exchanger cannot fully exchange heat with water due to the high flow speed, so that the heat exchange efficiency is low.
In view of this, how to design a heat exchange technology with high heat exchange efficiency is a technical problem to be solved by the invention.
Disclosure of Invention
The invention provides a phase-change heat exchange device, which adopts a phase-change energy storage plate to conduct heat and store energy so as to improve the heat exchange efficiency.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides a phase change thermal device comprising:
a housing;
the phase change energy storage plate is used for absorbing or releasing heat to carry out solid-solid phase change;
the first heat exchange flow channel is used for conveying a first heat exchange medium and exchanging heat with the phase change energy storage plate;
the second heat exchange flow channel is used for conveying a second heat exchange medium and exchanging heat with the phase change energy storage plate;
the phase change energy storage plate, the first heat exchange flow channel and the second heat exchange flow channel are located in the shell, and the phase change energy storage plate is in heat conduction with the first heat exchange flow channel and the second heat exchange flow channel respectively.
Furthermore, the phase change energy storage plate is arranged between the first heat exchange flow channel and the second heat exchange flow channel.
Furthermore, a first mounting groove is formed in a first surface of the phase change energy storage plate, a second mounting groove is formed in a second surface of the phase change energy storage plate, the first heat exchange flow channel is arranged in the first mounting groove, and the second heat exchange flow channel is arranged in the second mounting groove; wherein the first face and the second face are oppositely arranged.
Further, the first heat exchange flow channel and the second heat exchange flow channel are both coil pipes, the first mounting groove and the second mounting groove are both circuitous grooves, and the coil pipes are located in the circuitous grooves.
Furthermore, the first heat exchange runner and the second heat exchange runner are both microchannel heat exchangers, the first mounting groove and the second mounting groove are both strip-shaped grooves, and microchannel flat tubes of the microchannel heat exchangers are located in the strip-shaped grooves.
Further, the first heat exchange flow channels are all coil pipes, and the first mounting groove is a roundabout groove; the second heat exchange runner is a micro-channel heat exchanger, the second mounting grooves are all strip-shaped grooves, and micro-channel flat tubes of the micro-channel heat exchanger are located in the strip-shaped grooves.
Furthermore, a third mounting groove is formed in the edge of the phase change energy storage plate, and a collecting pipe of the micro-channel heat exchanger is located in the third mounting groove.
Further, the phase-change heat exchange device comprises a plurality of phase-change energy storage plates, a plurality of first heat exchange flow channels and a plurality of second heat exchange flow channels; the first heat exchange flow channels and the second heat exchange flow channels are alternately arranged, and the phase change energy storage plate is arranged between the adjacent first heat exchange flow channels and the adjacent second heat exchange flow channels.
Furthermore, the phase change heat exchange device also comprises a first total inlet pipe, a first total outlet pipe, a second total inlet pipe and a second total outlet pipe; the first heat exchange flow channel is connected between the first total inlet pipe and the first total outlet pipe, and the second heat exchange flow channel is connected between the second total inlet pipe and the second total outlet pipe.
Furthermore, the inner wall of the shell is provided with a heat insulation layer.
Compared with the prior art, the invention has the advantages and positive effects that: through dispose phase change energy storage board between first heat transfer runner and second heat transfer runner, utilize phase change energy storage board to transmit heat on the one hand, on the other hand can also utilize phase change energy storage board to come the stored energy, in the in-service use in-process, first heat transfer medium and second heat transfer medium carry out the heat exchange with phase change energy storage board respectively, wherein hotter medium release heat and heat phase change energy storage board, and colder medium then absorbs the heat that phase change energy storage board conducts, and utilize phase change energy storage board to carry out solid-solid phase change, can the heat that fast and efficient released hotter medium absorb fast, can prolong the time of heating colder medium again, and then improve heat exchange efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a phase change heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic view of a phase change heat exchanger according to an embodiment of the present invention with the outer shell removed;
FIG. 3 is a cross-sectional view of one embodiment of a phase change heat transfer device of the present invention;
FIG. 4 is a partial exploded view of one embodiment of a phase-change heat transfer device in accordance with the present invention;
fig. 5 is a partial cross-sectional view of a phase change energy storage plate in an embodiment of the phase change heat exchanger according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element 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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 5, the present embodiment proposes a phase-change thermal device, including: the heat exchanger comprises a shell 1, a phase change energy storage plate 2, a first heat exchange flow channel 3 and a second heat exchange flow channel 4.
The shell is used as an external protection component for installing and containing the phase change energy storage plate 2, the first heat exchange flow channel 3 and the second heat exchange flow channel 4. The phase change energy storage plate is used for absorbing or releasing heat to perform solid-solid phase change, for example: the phase-change energy storage plate can be made of materials such as sodium acetate trihydrate and the like to realize solid-solid phase change, namely, the powdery sodium acetate trihydrate is pressed to form a plate-shaped structure to obtain the phase-change energy storage plate. The first heat exchange flow channel is used for conveying a first heat exchange medium and exchanging heat with the phase change energy storage plate, and the second heat exchange flow channel is used for conveying a second heat exchange medium and exchanging heat with the phase change energy storage plate.
The phase change energy storage plate, the first heat exchange flow channel and the second heat exchange flow channel are located in the shell, a first heat exchange medium flows in the first heat exchange flow channel and exchanges heat with the phase change energy storage plate, and similarly, a second heat exchange medium flows in the second heat exchange flow channel and exchanges heat with the phase change energy storage plate.
In an actual use process, the first heat exchange flow channel and the second heat exchange flow channel are correspondingly connected in circulation flow channels through which different heat exchange media flow, so that the first heat exchange medium and the second heat exchange medium exchange heat through the phase change energy storage plate arranged in the middle in the flowing process.
For the phase change energy storage plate between the first heat exchange flow channel and the second heat exchange flow channel, the phase change energy storage plate can transfer heat between the first heat exchange flow channel and the second heat exchange flow channel and can store the heat by utilizing the solid-solid phase change principle. Therefore, in the heat exchange process, the heat exchange medium with higher temperature can exchange heat with the phase change energy storage plate quickly and efficiently, on one hand, the heat exchange medium with lower temperature is heated through the phase change energy storage plate, on the other hand, heat is further stored through the phase change energy storage plate, the heating time is prolonged, and the heat exchange efficiency is improved.
Taking a heat pump heating system as an example, a high-temperature refrigerant output by a compressor in a heat pump unit is used as a first heat exchange medium, and a heat exchange liquid flowing in a radiator in a user's home is used as a second heat exchange medium. The first heat exchange flow channel is connected with a compressor, a throttling device and a heat exchanger in the heat pump unit to form a refrigerant loop, and the first heat exchange flow channel is connected with a radiator to form a heat dissipation loop.
After the compressor is started, the refrigerant is driven to circularly flow in the refrigerant loop, the refrigerant flows through the first heat exchange flow channel and releases heat to heat the phase change energy storage plate, and more heat can be stored by utilizing the phase change characteristic of the phase change energy storage plate so as to improve the heat exchange efficiency of the refrigerant in the first heat exchange flow channel. Meanwhile, the heat exchange liquid flowing in the radiator flows through the second heat exchange flow channel and absorbs the heat transferred by the phase change energy storage plate. More importantly, in the running process of the compressor, the phase change energy storage plate can absorb more heat and store the heat, so that the heat of the heat exchange liquid in the second heat exchange flow channel is maintained to be heated for a long time by the aid of the heat released by the phase change energy storage plate when the compressor is in a shutdown state, and further the heat exchange efficiency of the heat exchange liquid in the second heat exchange flow channel is improved.
In the actual assembling process, the phase change energy storage plate 2, the first heat exchange flow channel 3 and the second heat exchange flow channel 4 are all positioned in the shell 1. The shell 1 can be used for installing the phase change energy storage plate 2, the first heat exchange flow channel 3 and the second heat exchange flow channel 4 and protecting the phase change energy storage plate 2, the first heat exchange flow channel 3 and the second heat exchange flow channel 4. In order to improve the heat insulating performance, a heat insulating layer (not shown) is provided on the inner wall of the housing 1 so as to improve the heat insulating performance of the housing 1.
Meanwhile, the first external connection port 300 of the first heat exchange flow channel 3 and the second external connection port 400 of the second heat exchange flow channel 4 are exposed outside the housing 1, so as to be conveniently connected with an external pipeline.
In some embodiments, in order to improve the heat exchange efficiency more effectively, the first heat exchange flow channel 3 comprises a plurality of microchannel heat exchangers 31, a first inlet pipe 32 and a first outlet pipe 33, wherein the microchannel heat exchangers 31 are connected between the first inlet pipe 32 and the first outlet pipe 33; similarly, the second heat exchange flow channel 4 includes a plurality of heat exchange tubes 41, a second inlet tube 42 and a second outlet tube 43, and the heat exchange tubes 41 are connected between the second inlet tube 42 and the second outlet tube 43; wherein, microchannel heat exchanger 31 and heat exchange tube 41 are arranged in turn, and phase change energy storage plate 2 is arranged between microchannel heat exchanger 31 and heat exchange tube 41. In addition, the ports of the first inlet pipe 32 and the first outlet pipe 33 extending out of the housing 1 form a first external port 300, and the ports of the second inlet pipe 42 and the second outlet pipe 43 extending out of the housing 1 form a second external port 400.
Specifically, in the actual assembling process, the adjacent microchannel heat exchanger 31 and the heat exchange tube 41 are spaced by the phase change energy storage plate 2, so that the microchannel heat exchanger 31, the phase change energy storage plate 2 and the heat exchange tube 41 form a unit, and the plurality of units are correspondingly attached together in sequence to form a module, thereby realizing efficient and sufficient heat exchange and improving the heat exchange efficiency.
In some embodiments, in order to facilitate accurate assembly, a first surface of the phase change energy storage plate 2 is used for mounting the microchannel heat exchanger 31, a second surface of the phase change energy storage plate 2 is used for mounting the heat exchange tube 41, the first surface is provided with a first mounting groove 21, the microchannel heat exchanger 31 is located in the first mounting groove 21, the second surface is provided with a second mounting groove 22, and the heat exchange tube 41 is located in the second mounting groove 22; wherein the first face and the second face are oppositely arranged.
In the actual assembly process, an operator positions and installs the microchannel flat tubes 311 of the microchannel heat exchanger 31 through the first installation grooves 21, and also positions and installs the heat exchange tubes 41 through the second installation grooves 22. Taking the micro-channel heat exchanger 31 as an example, the micro-channel heat exchanger 31 is placed in the first mounting groove 21, and in order to improve the heat conduction efficiency and the assembling reliability, a heat-conducting glue may be further applied to the first mounting groove 21, so that the micro-channel heat exchanger 31 is more firmly positioned and mounted through the heat-conducting glue, and meanwhile, the heat conduction efficiency between the micro-channel heat exchanger 31 and the phase change energy storage plate 2 is improved.
In another embodiment, the heat exchanging pipes 41 may have a serpentine coil structure to increase the contact heat exchanging area, which is more beneficial to improve the heat exchanging efficiency.
In one embodiment, in order to facilitate the installation of the microchannel heat exchanger 31, a third installation groove 23 is further disposed on the edge of the first surface, and the collecting pipe 312 of the microchannel heat exchanger 31 is located in the third installation groove 23. Specifically, since the pipe diameter of the collecting pipe 312 of the microchannel heat exchanger 31 is much larger than the thickness of the microchannel flat pipe 311, in order to meet the design requirement of the phase change heat exchanger 3 for compact structure, the third mounting groove 23 is formed at the edge of the first surface of the phase change energy storage plate 2 to mount and receive the collecting pipe 312, so that the overall structure is more compact.
In some embodiments, in order to improve the energy storage capacity, the phase change energy storage plates 2 are arranged on both sides of the microchannel heat exchanger 31; similarly, the two sides of the heat exchange tube are provided with the phase change energy storage plates 2.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A phase change thermal apparatus comprising:
a housing;
the phase change energy storage plate is used for absorbing or releasing heat to carry out solid-solid phase change;
the first heat exchange flow channel is used for conveying a first heat exchange medium and exchanging heat with the phase change energy storage plate;
the second heat exchange flow channel is used for conveying a second heat exchange medium and exchanging heat with the phase change energy storage plate;
the phase change energy storage plate, the first heat exchange flow channel and the second heat exchange flow channel are located in the shell, and the phase change energy storage plate is in heat conduction with the first heat exchange flow channel and the second heat exchange flow channel respectively.
2. The phase-change heat exchange device according to claim 1, wherein the phase-change energy storage plate is disposed between the first heat exchange flow passage and the second heat exchange flow passage.
3. The phase change heat exchanger according to claim 1, wherein a first mounting groove is formed on a first surface of the phase change energy storage plate, a second mounting groove is formed on a second surface of the phase change energy storage plate, the first heat exchange flow passage is disposed in the first mounting groove, and the second heat exchange flow passage is disposed in the second mounting groove; wherein the first face and the second face are oppositely arranged.
4. The phase change heat transfer device of claim 3, wherein the first heat transfer flow channel and the second heat transfer flow channel are both coils, and the first mounting groove and the second mounting groove are both circuitous grooves in which the coils are located.
5. The phase-change heat exchange device according to claim 3, wherein the first heat exchange flow channel and the second heat exchange flow channel are both microchannel heat exchangers, the first mounting groove and the second mounting groove are both bar-shaped grooves, and microchannel flat tubes of the microchannel heat exchangers are located in the bar-shaped grooves.
6. The phase change heat exchange device according to claim 3, wherein the first heat exchange flow channels are all coil pipes, and the first mounting grooves are circuitous grooves; the second heat exchange runner is a micro-channel heat exchanger, the second mounting grooves are all strip-shaped grooves, and micro-channel flat tubes of the micro-channel heat exchanger are located in the strip-shaped grooves.
7. The phase-change heat exchange device according to claim 5 or 6, wherein the edge of the phase-change energy storage plate is provided with a third mounting groove, and the collecting pipe of the microchannel heat exchanger is positioned in the third mounting groove.
8. The phase-change heat exchange device according to claim 1, wherein the phase-change heat exchange device comprises a plurality of the phase-change energy storage plates, a plurality of the first heat exchange flow passages, and a plurality of the second heat exchange flow passages; the first heat exchange flow channels and the second heat exchange flow channels are alternately arranged, and the phase change energy storage plate is arranged between the adjacent first heat exchange flow channels and the adjacent second heat exchange flow channels.
9. The phase change heat transfer device according to claim 8, further comprising a first inlet manifold, a first outlet manifold, a second inlet manifold, and a second outlet manifold; the first heat exchange flow channel is connected between the first total inlet pipe and the first total outlet pipe, and the second heat exchange flow channel is connected between the second total inlet pipe and the second total outlet pipe.
10. A phase-change heat-exchange device according to claim 1, wherein the inner wall of the case is provided with an insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010402542.7A CN111637775A (en) | 2020-05-13 | 2020-05-13 | Phase change heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010402542.7A CN111637775A (en) | 2020-05-13 | 2020-05-13 | Phase change heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN111637775A true CN111637775A (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010402542.7A Pending CN111637775A (en) | 2020-05-13 | 2020-05-13 | Phase change heat exchanger |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279901A (en) * | 2013-07-02 | 2015-01-14 | 樊建华 | Heat accumulation module and heat accumulator |
| CN106017168A (en) * | 2016-07-11 | 2016-10-12 | 江苏科技大学 | LNG vaporizer utilizing phase-change heat transfer technology and vaporization method |
| US20180017337A1 (en) * | 2016-07-15 | 2018-01-18 | Neothermal Energy Storage Inc. | Thermal energy storage apparatus |
| CN208910121U (en) * | 2018-06-08 | 2019-05-31 | 广东美的厨房电器制造有限公司 | Heat-exchanger rig, heat pump system and washing electric appliance |
| CN111637662A (en) * | 2020-04-27 | 2020-09-08 | 青岛海尔新能源电器有限公司 | Heat pump apparatus |
-
2020
- 2020-05-13 CN CN202010402542.7A patent/CN111637775A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279901A (en) * | 2013-07-02 | 2015-01-14 | 樊建华 | Heat accumulation module and heat accumulator |
| CN106017168A (en) * | 2016-07-11 | 2016-10-12 | 江苏科技大学 | LNG vaporizer utilizing phase-change heat transfer technology and vaporization method |
| US20180017337A1 (en) * | 2016-07-15 | 2018-01-18 | Neothermal Energy Storage Inc. | Thermal energy storage apparatus |
| CN208910121U (en) * | 2018-06-08 | 2019-05-31 | 广东美的厨房电器制造有限公司 | Heat-exchanger rig, heat pump system and washing electric appliance |
| CN111637662A (en) * | 2020-04-27 | 2020-09-08 | 青岛海尔新能源电器有限公司 | Heat pump apparatus |
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