CN112146496A - Radiator with liquid phase change and microporous structure - Google Patents

Radiator with liquid phase change and microporous structure Download PDF

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Publication number
CN112146496A
CN112146496A CN202011069725.8A CN202011069725A CN112146496A CN 112146496 A CN112146496 A CN 112146496A CN 202011069725 A CN202011069725 A CN 202011069725A CN 112146496 A CN112146496 A CN 112146496A
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CN
China
Prior art keywords
shell
phase change
microporous
temperature difference
micro pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011069725.8A
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Chinese (zh)
Inventor
王建伟
尚玉坤
邢江涛
尚彦伟
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Henan Hanguang Technology Co ltd
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Henan Hanguang Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Hanguang Technology Co ltd filed Critical Henan Hanguang Technology Co ltd
Priority to CN202011069725.8A priority Critical patent/CN112146496A/en
Publication of CN112146496A publication Critical patent/CN112146496A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002Generators

Abstract

The invention relates to a radiator with a liquid phase change and micropore structure, which comprises a shell, a micropore plate, a flow guide pipe, temperature difference power generation sheets and a micropump, wherein the shell comprises an outer shell and an inner shell, a closed phase change cavity is formed between the inner wall of the outer shell and the outer wall of the inner shell, volatile liquid is filled in the phase change cavity, an installation section is arranged on one side of the outer shell, the micropore plate is positioned in the phase change cavity and is arranged on the inner side of the installation section of the outer shell, a plurality of temperature difference power generation sheets are arranged in an up-and-down array mode to form a temperature difference layer, the temperature difference layer is positioned between the micropore plate and the installation section of the outer shell, the upper end and the lower end of the flow guide pipe are respectively positioned on the upper portion and the bottom of the. The invention aims to solve or at least reduce the problem of low heat conduction rate of the existing heat radiator, and provides a heat radiator with a liquid phase change and microporous structure.

Description

Radiator with liquid phase change and microporous structure
Technical Field
The invention relates to the technical field of radiators, in particular to a radiator with a liquid phase change and microporous structure.
Background
At present, the heat dissipation principle of the heat radiator is that metal with high heat conductivity is mostly used for heat conduction and adhesion with a heating body to increase the heat dissipation area, so that the heat dissipation effect of the heating body is improved. However, this kind of heat dissipation is not ideal, if the heating element heats faster, the heat conduction rate of the heat sink is less than the heating rate of the heating element, and the heating element will accumulate a large amount of heat energy, and will be damaged in severe cases.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, solve or at least alleviate the problem of low heat conduction rate of the existing radiator, and provide a radiator with a liquid phase change and microporous structure.
The invention is realized by the following technical scheme:
a radiator with liquid phase change and microporous structure comprises a shell, a microporous plate, a flow guide pipe, a thermoelectric generation sheet and a micro pump;
the shell comprises an outer shell and an inner shell, wherein the outer shell and the inner shell are both in a tubular shape, the outer shell is sleeved outside the inner shell, a closed phase change cavity is formed between the inner wall of the outer shell and the outer wall of the inner shell, volatile liquid is filled in the phase change cavity, an installation section is arranged on one side of the outer shell, and the outer side of the installation section is in heat conduction fit with the heating body;
the microporous plate is positioned in the phase change cavity and is arranged on the inner side of the mounting section of the outer shell;
the temperature difference layer is arranged between the microporous plate and the mounting section of the outer shell, and two sides of the temperature difference layer are respectively in heat conduction fit with the microporous plate and the mounting section;
the upper end and the lower end of the flow guide pipe are respectively positioned at the upper part and the bottom of the phase change cavity;
the liquid inlet end of the micro pump is communicated with the upper end of the flow guide pipe, the liquid outlet end of the micro pump is abutted to the upper part of the microporous plate, and the micro pump is connected with the temperature difference power generation sheet.
In order to further implement the present invention, the following technical solutions may be preferably selected:
preferably, the outer side wall array of shell body is provided with a plurality of radiating fin, radiating fin is the sheet metal form, and radiating fin one end is laminated with the outer side wall heat conduction of shell body, and the other end outwards stretches out.
Preferably, the interior of the phase change cavity is in a vacuum state or a state close to the vacuum state.
Preferably, the volatile liquid is acetone liquid.
Preferably, the microporous plate is a plate body made of honeycomb aluminum or foamed aluminum.
Preferably, the inner side wall of the inner shell is provided with a spiral guide groove, the upper part of the inner shell is provided with a fan, and an air outlet of the fan is arranged corresponding to the guide groove of the inner shell.
Preferably, the lower part of the flow guide pipe is in a straight pipe shape, the upper part of the flow guide pipe is bent downwards smoothly, and the micro pump is a piezoelectric pump.
Preferably, an energy storage device is arranged between the micro pump and the thermoelectric generation piece, and the energy storage device is a lithium battery or a capacitor.
Preferably, the radiator further comprises a controller, wherein a signal input end of the controller is connected with the thermoelectric generation sheet in the thermoelectric layer, and a signal output end of the controller is connected with the micro pump;
the controller is configured to: when the difference value between the voltage signal value sent by the temperature difference power generation piece positioned on the upper part of the temperature difference layer and the voltage signal value sent by the temperature difference power generation piece positioned on the lower part of the temperature difference layer is larger than the preset value, the controller controls the micro pump to start and start timing, and when the preset value is reached, the controller controls the micro pump to be closed.
Through the technical scheme, the invention has the beneficial effects that:
the shell is tubular and is provided with an inner radiating surface and an outer radiating surface, so that the radiating area is increased; simultaneously, the lateral wall of shell body is provided with radiating fin, and interior casing inside wall is provided with spiral helicine guiding gutter, has further effectively improved heat radiating area to improve the radiating effect.
The phase change cavity is arranged between the outer shell and the inner shell, the volatile liquid is filled in the phase change cavity, the volatile liquid is heated and boiled and is converted into a gas phase from a liquid phase, a large amount of heat can be absorbed in the phase change process, and the heat is timely conducted to the radiating fins of the radiator body, so that the radiating effect is good, the heat conduction speed is greatly improved, and a large amount of heat energy is prevented from being accumulated at the heating body.
The phase change cavity is internally provided with the microporous plate, the volatile liquid is adsorbed on the surface of the microporous plate through the siphon principle to form a volatile liquid film, and the surface area of the volatile liquid is increased, so that the phase change rate of the volatile liquid is improved, the volatile liquid can be subjected to phase change more quickly and more when the radiator is heated, and the heat conduction rate is further improved.
The volatile liquid of liquid state is located phase transition chamber bottom mostly, and the volatile liquid of a small part liquid state shifts up and forms the volatile liquid film along the micropore board, and when the heat-generating body in the installation section outside evenly generated heat, the volatile liquid on phase transition chamber upper portion was less, and consequently the heat conduction rate of phase transition chamber lower part is greater than the heat conduction rate on phase transition chamber upper portion, and the corresponding heat that sets up on phase transition chamber upper portion can accumulate more heat, makes the heat-generating body heat unbalanced, can cause the harm to the heat-generating body when serious. The phase change micro-pump is provided with the flow guide pipe, the temperature difference power generation sheet and the micro-pump, the temperature difference power generation sheet provides electric energy for the micro-pump, and the volatile liquid in the liquid state at the bottom of the phase change cavity is conveyed to the upper part of the microporous plate through the flow guide pipe, so that more phase changes occur at the upper part in the phase change cavity, and the purposes of quickly radiating heat of a heating body at the lower part of the phase change cavity and a heating body at the upper part of the phase.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the transverse structure of the present invention;
FIG. 3 is an inverted view of the cross-sectional view of the structure of FIG. 2 at A-A in accordance with the present invention;
FIG. 4 is an enlarged view of the present invention at C of FIG. 3;
FIG. 5 is a cross-sectional view of the structure of FIG. 2 taken along line B-B in accordance with the present invention;
FIG. 6 is a schematic structural view of the housing of the present invention;
FIG. 7 is a schematic view of the structure of the draft tube of the present invention;
FIG. 8 is a schematic view of the structure of the temperature difference layer of the present invention;
wherein: 1-an outer shell; 2-an inner housing; 3-a phase change cavity; 4-a microporous plate; 5-a flow guide pipe; 6-thermoelectric power generation piece; 7-a micropump; 8-radiating fins; 9-a flow guide groove; 10-an installation section; 11-a fan.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1:
as shown in fig. 1-8, a heat sink with liquid phase change and microporous structure comprises a shell, a microporous plate 4, a flow guide pipe 5, a thermoelectric generation sheet 6 and a micro pump 7;
the heating device comprises a shell, a heating element and a heating element, wherein the shell comprises an outer shell 1 and an inner shell 2, the outer shell 1 and the inner shell 2 are both in a tubular shape, the outer shell 1 is sleeved outside the inner shell 2, a closed phase change cavity 3 is formed between the inner wall of the outer shell 1 and the outer wall of the inner shell 2, volatile liquid is filled in the phase change cavity 3, an installation section 10 is arranged on one side of the outer shell 1, and the outer side of the installation section 10 is in;
the microporous plate 4 is positioned in the phase change cavity 3 and is arranged on the inner side of the mounting section 10 of the outer shell 1, and the microporous plate 4 is a plate-shaped body made of honeycomb aluminum or foamed aluminum;
the thermoelectric generation pieces 6 are arranged in an up-and-down array to form a thermoelectric layer, the thermoelectric layer is positioned between the microporous plate 4 and the installation section 10 of the outer shell 1, two sides of the thermoelectric layer are respectively in heat conduction fit with the microporous plate 4 and the installation section 10, and the thermoelectric generation pieces 6 are semiconductor wafer thermoelectric generation pieces with the brands of Chuangguzhou and the models of TGM-287-1.4;
the upper end and the lower end of the flow guide pipe 5 are respectively positioned at the upper part and the bottom of the phase change cavity;
the liquid inlet end of the micro pump 7 is communicated with the upper end of the draft tube 5, the liquid outlet end of the micro pump is abutted to the upper part of the micropore plate 4, and the micro pump 7 is connected with the thermoelectric generation sheet 6.
In order to increase the heat dissipation area of the heat sink and improve the heat dissipation effect, the outer side wall array of the outer shell 1 is provided with a plurality of heat dissipation fins 8, the heat dissipation fins 8 are in a thin plate shape, one ends of the heat dissipation fins 8 are in heat conduction fit with the outer side wall of the outer shell 1, and the other ends of the heat dissipation fins extend outwards; the inside wall of the inner shell 2 is provided with a spiral diversion trench 9, the upper part of the inner shell 2 is provided with a fan 11, and an air outlet of the fan 11 is arranged corresponding to the diversion trench 9 of the inner shell 2.
In order to reduce the boiling point of the volatile liquid, the interior of the phase change cavity 3 is in a vacuum state or a state close to the vacuum state, and the volatile liquid is acetone liquid.
In order to enable the flow guide pipe 5 to be capable of automatically siphoning and reduce the working time of the micro pump 7, the lower part of the flow guide pipe 5 is in a straight pipe shape, the upper part of the flow guide pipe 5 is smoothly bent downwards, the micro pump 7 adopts a piezoelectric pump, an energy storage device is arranged between the micro pump 7 and the thermoelectric generation piece 6, and the energy storage device is a lithium battery or a capacitor.
The radiator also comprises a controller, wherein the signal input end of the controller is connected with the temperature difference power generation sheet 6 in the temperature difference layer, and the signal output end of the controller is connected with the micro pump 7;
the controller is configured to: when the difference value between the voltage signal value sent by the temperature difference power generation sheet 6 positioned on the upper part of the temperature difference layer and the voltage signal value sent by the temperature difference power generation sheet 6 positioned on the lower part of the temperature difference layer is larger than the preset value, the controller controls the micro pump 7 to start and start timing, and when the preset value is reached, the controller controls the micro pump 7 to be closed.
The shell is tubular and is provided with an inner radiating surface and an outer radiating surface, so that the radiating area is increased; simultaneously, the lateral wall of shell body 1 is provided with radiating fin 8, and 2 inside walls in interior casing are provided with spiral helicine guiding gutter 9, have further effectively improved heat radiating area to improve the radiating effect.
According to the invention, the phase change cavity 3 is arranged between the outer shell 1 and the inner shell 2, the phase change cavity 3 is filled with volatile liquid, the volatile liquid is heated and boiled to be converted from a liquid phase to a gas phase, a large amount of heat can be absorbed in the phase change process, and the heat is timely conducted to the radiating fins 8 of the radiator body, so that the radiating effect is good, the heat conduction rate is greatly improved, and a large amount of heat energy is prevented from being accumulated at a heating body.
A microporous plate 4 is arranged in a phase change cavity 3, the volatile liquid is adsorbed on the surface of the microporous plate 4 through a siphon principle to form a volatile liquid film, and the surface area of the volatile liquid is increased, so that the phase change rate of the volatile liquid is improved, the volatile liquid can be subjected to phase change more quickly and more when a radiator is heated, and the heat conduction rate is further improved.
The volatile liquid of liquid state is located 3 bottoms in phase transition chamber mostly, the volatile liquid of a small part liquid state moves up and forms the volatile liquid film along micropore board 4, when the heat-generating body in the installation section 10 outside evenly generates heat, the volatile liquid on 3 upper portions in phase transition chamber is less, therefore the heat conduction rate of 3 lower parts in phase transition chamber is greater than the heat conduction rate on 3 upper portions in phase transition chamber, the corresponding heat that sets up on 3 upper portions in phase transition chamber can accumulate more heat, it is unbalanced to make the heat-generating body heat, can cause the harm to the heat-generating body when serious. The phase change device is provided with a flow guide pipe 5, a temperature difference power generation sheet 6 and a micro pump 7, the temperature difference power generation sheet 6 supplies electric energy to the micro pump 7, and volatile liquid in a liquid state at the bottom of a phase change cavity 3 is conveyed to the upper part of a microporous plate 4 through the flow guide pipe 5, so that more phase changes occur at the upper part in the phase change cavity 3, and the purposes that a heating body at the lower part of the phase change cavity 3 and a heating body at the upper part of the phase change cavity 3 can both rapidly dissipate heat are achieved.
Finally, it should be noted that: 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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (9)

1. A radiator with liquid phase change and microporous structures is characterized by comprising a shell, a microporous plate (4), a flow guide pipe (5), a thermoelectric generation sheet (6) and a micro pump (7);
the heating device comprises a shell, wherein the shell comprises an outer shell (1) and an inner shell (2), the outer shell (1) and the inner shell (2) are both in a tubular shape, the outer shell (1) is sleeved outside the inner shell (2), a closed phase change cavity (3) is formed between the inner wall of the outer shell (1) and the outer wall of the inner shell (2), volatile liquid is filled in the phase change cavity (3), an installation section (10) is arranged on one side of the outer shell (1), and the outer side of the installation section (10) is in heat conduction fit with a heating body;
the microporous plate (4) is positioned in the phase change cavity (3) and is arranged on the inner side of the mounting section (10) of the outer shell (1);
the temperature difference layers are formed by the vertical array arrangement of the plurality of temperature difference power generation sheets (6), are positioned between the micro-porous plate (4) and the mounting section (10) of the outer shell (1), and are respectively in heat conduction fit with the micro-porous plate (4) and the mounting section (10) on two sides;
the upper end and the lower end of the flow guide pipe (5) are respectively positioned at the upper part and the bottom of the phase change cavity;
the liquid inlet end of the micro pump (7) is communicated with the upper end of the flow guide pipe (5), the liquid outlet end of the micro pump is abutted to the upper part of the microporous plate (4), and the micro pump (7) is connected with the thermoelectric generation sheet (6).
2. The heat sink with liquid phase change and microporous structure as claimed in claim 1, wherein the outer sidewall array of the outer shell (1) is provided with a plurality of heat dissipating fins (8), the heat dissipating fins (8) are thin plates, one end of each heat dissipating fin (8) is in heat conduction fit with the outer sidewall of the outer shell (1), and the other end of each heat dissipating fin extends outwards.
3. A liquid phase change and microporous structure heat sink according to claim 1, characterized in that the inside of the phase change chamber (3) is in vacuum or near vacuum state.
4. The heat sink with liquid phase change and microporous structure as claimed in claim 3, wherein the volatile liquid is acetone liquid.
5. The heat sink with liquid phase change and microporous structure as claimed in claim 1, wherein the microporous plate (4) is a plate made of honeycomb aluminum or foamed aluminum.
6. The heat sink with liquid phase change and microporous structure as claimed in claim 1, wherein the inner side wall of the inner shell (2) is provided with a spiral guiding groove (9), the upper part of the inner shell (2) is provided with a fan (11), and the air outlet of the fan (11) is arranged corresponding to the guiding groove (9) of the inner shell (2).
7. The heat sink with liquid phase transition and microporous structure as claimed in claim 1, wherein the lower part of the flow guide tube (5) is in the shape of straight tube, the upper part of the flow guide tube (5) is smoothly bent downwards, and the micro pump (7) is a piezoelectric pump.
8. The heat sink with liquid phase change and microporous structure as claimed in claim 7, wherein an energy storage device is arranged between the micro pump (7) and the thermoelectric generation sheet (6), and the energy storage device is a lithium battery or a capacitor.
9. The heat sink with liquid phase change and microporous structure as claimed in any one of claims 1-8, wherein the heat sink further comprises a controller, the signal input end of the controller is connected with the thermoelectric generation sheet (6) in the thermoelectric layer, and the signal output end is connected with the micro pump (7);
the controller is configured to: when the difference value between the voltage signal value sent by the temperature difference power generation sheet (6) positioned on the upper part of the temperature difference layer and the voltage signal value sent by the temperature difference power generation sheet (6) positioned on the lower part of the temperature difference layer is larger than the preset value, the controller controls the micro pump (7) to start and start timing, and when the preset value is reached, the controller controls the micro pump (7) to be closed.
CN202011069725.8A 2020-09-30 2020-09-30 Radiator with liquid phase change and microporous structure Pending CN112146496A (en)

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CN202011069725.8A CN112146496A (en) 2020-09-30 2020-09-30 Radiator with liquid phase change and microporous structure

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CN202011069725.8A CN112146496A (en) 2020-09-30 2020-09-30 Radiator with liquid phase change and microporous structure

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Citations (6)

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Publication number Priority date Publication date Assignee Title
US6237223B1 (en) * 1999-05-06 2001-05-29 Chip Coolers, Inc. Method of forming a phase change heat sink
CN2671129Y (en) * 2004-01-09 2005-01-12 杨洪武 Heat-pipe radiator of heating electronic component
CN103528035A (en) * 2013-11-05 2014-01-22 南京航空航天大学 Heat dissipation method and device for integrated heat pipe of large-power LED
CN206247927U (en) * 2016-10-20 2017-06-13 北京空间飞行器总体设计部 A kind of three-dimensional integrated structure vapor chamber heat-pipe radiator
CN107203253A (en) * 2017-06-30 2017-09-26 广东合新材料研究院有限公司 A kind of contact active Phase cooling structure and passive Phase cooling structure
CN111696937A (en) * 2020-06-30 2020-09-22 河南瀚光科技有限公司 Radiator based on carbon nanotube technology

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6237223B1 (en) * 1999-05-06 2001-05-29 Chip Coolers, Inc. Method of forming a phase change heat sink
CN2671129Y (en) * 2004-01-09 2005-01-12 杨洪武 Heat-pipe radiator of heating electronic component
CN103528035A (en) * 2013-11-05 2014-01-22 南京航空航天大学 Heat dissipation method and device for integrated heat pipe of large-power LED
CN206247927U (en) * 2016-10-20 2017-06-13 北京空间飞行器总体设计部 A kind of three-dimensional integrated structure vapor chamber heat-pipe radiator
CN107203253A (en) * 2017-06-30 2017-09-26 广东合新材料研究院有限公司 A kind of contact active Phase cooling structure and passive Phase cooling structure
CN111696937A (en) * 2020-06-30 2020-09-22 河南瀚光科技有限公司 Radiator based on carbon nanotube technology

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Title
彭芳等: "《化工设备》", 31 December 2012, 北京理工大学出版社 *

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