CN107990770A - A kind of gravity type heat exchanger of 2X2 groups module - Google Patents
A kind of gravity type heat exchanger of 2X2 groups module Download PDFInfo
- Publication number
- CN107990770A CN107990770A CN201711463001.XA CN201711463001A CN107990770A CN 107990770 A CN107990770 A CN 107990770A CN 201711463001 A CN201711463001 A CN 201711463001A CN 107990770 A CN107990770 A CN 107990770A
- Authority
- CN
- China
- Prior art keywords
- core
- heat exchanger
- gravity type
- type heat
- groups module
- 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
Links
Classifications
-
- 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
- F28D15/00—Heat-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
- F28D15/02—Heat-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
- F28D15/04—Heat-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 with tubes having a capillary structure
-
- 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
- F28D7/0008—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 for one medium being in heat conductive contact with the conduits for the other medium
- F28D7/0025—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 for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to a kind of gravity type heat exchanger of 2X2 groups module, including supporter and the first heat exchange group and the second heat exchange group that are connected with supporter；First heat exchange group includes the first core and the second core, and the second heat exchange group includes the 3rd core and the 4th core；First core and the 3rd core are arranged in low level, and the second core and the 4th are arranged in a high position, and the first core is connected with the second core by connecting pipe, and the 3rd core is connected with the 4th core by connecting pipe；Liquid refrigerant is filled with first core and the 3rd core, liquid refrigerant is set to start gasification when environment temperature reaches setting value；Second core and the 4th core are used to accommodate gaseous working medium, and gaseous working medium is converted into liquid refrigerant in the second core and the 4th core, and is back to the first core and the 3rd core under the effect of gravity.The present invention need not consume electric energy, simple in structure, and operational reliability is high, and without any discharge, will not cause environmental pollution.
Description
Technical field
The present invention relates to a kind of heat exchanger, more particularly to a kind of gravity type heat exchanger of 2X2 groups module.
Background technology
For the heat dissipation problem of communication base station interior of equipment cabinet, air-conditioning system that most of base stations heat dissipation of the prior art uses
System is common split-type air conditioner, using compressor cooling and heating, has following technological deficiency：
1) power consumption is big, is unfavorable for energy saving；
2) cabinet internal temperature process is balanced, high frequent starts, easy break-down, and operational reliability is poor；
3) compressor cooling can produce environment certain influence.
The content of the invention
It is an object of the invention to provide a kind of energy-saving and environmental protection, the gravity type heat exchange of stable 2X2 group modules
Device.
The present invention provides a kind of gravity type heat exchanger of 2X2 groups module, including supporter and it is connected with supporter
First heat exchange group and the second heat exchange group；First heat exchange group includes the first core and the second core, the second heat exchange group bag
Include the 3rd core and the 4th core；
First core and the 3rd core are arranged in low level, and the second core and the 4th core are arranged in a high position, the first core with
Second core is connected by connecting pipe, and the 3rd core is connected with the 4th core by connecting pipe；
Liquid refrigerant is filled with first core and the 3rd core, liquid refrigerant is set to reach setting in environment temperature
Start gasification during value, so that liquid refrigerant is converted into gaseous working medium；
Second core and the 4th core are used to accommodate gaseous working medium, and gaseous working medium is in the second core and the 4th core conversion in the body
For liquid refrigerant, and the first core and the 3rd core are back under the effect of gravity.
Further, the first core, the second core, the 3rd core and the 4th core include being used to accommodate the multigroup flat of working medium
Manage, be connected with fin between adjacent flat tube, the input terminal and output terminal of flat tube are connected with header.
Further, the inside aperture for being used for forming microchannel is equipped with inside flat tube along cross-wise direction.
Further, the quantity of inside aperture is greater than or equal to 11.
Further, header is connected with connecting pipe.
Further, connecting pipe is connected with the high pressure charging valve for filling liquid working medium.
Further, the first core, the second core, the 3rd core and the 4th core are further included for being connected with supporter
Side plate, side plate are connected by side plate with supporter, so that between the first core, the 3rd core and supporter, and the second core,
Insulating space is formed between four cores and supporter.
Further, supporter is rectangular slab, and the first core and the 3rd core are arranged in square along the length direction of rectangular slab
On a side in back-to-back two sides of shape plate, the second core and the 4th core are arranged on another side.
Further, liquid refrigerant R134a.
Further, liquid refrigerant is set to start gasification when environment temperature reaches 25 DEG C.
Compared with prior art the beneficial effects of the invention are as follows：Pass through the physic vaporization (heat absorption) and liquid of core internal working medium
Change changing to reach the effect of heat dissipation, without consuming electric energy for (heat release)；Heat exchanger is enclosed construction, working medium it is internal not
Disconnected changes into gaseous state by liquid, then changes into liquid by gaseous state, and lower part, structure letter are returned to by self gravitation afterwards into liquid
Single, operational reliability is high, and without any discharge, will not cause environmental pollution.
Brief description of the drawings
Fig. 1 is a kind of first three-dimensional view of the gravity type heat exchanger of 2X2 groups module of the present invention；
Fig. 2 is a kind of second three-dimensional view of the gravity type heat exchanger of 2X2 groups module of the present invention；
Fig. 3 is a kind of side view of the gravity type heat exchanger of 2X2 groups module of the present invention；
Fig. 4 is a kind of structural representation of the first core of gravity type heat exchanger and the second core of 2X2 groups module of the present invention
Figure；
Fig. 5 is a kind of internal structure schematic diagram of the gravity type flat tube of heat exchanger of 2X2 groups module of the present invention；
Fig. 6 is a kind of sectional view of the gravity type flat tube of heat exchanger of 2X2 groups module of the present invention；
Fig. 7 is a kind of structure diagram of the gravity type heat-exchanger fin of 2X2 groups module of the present invention；
Fig. 8 is that a kind of gravity type heat exchanger connecting pipe of 2X2 groups module of the present invention and the connection of high pressure charging valve are shown
It is intended to.
Figure label：
11- supporters；12- side plates；
The first cores of 21-；The second cores of 22-；The 3rd cores of 23-；The 4th cores of 24-；25- connecting pipes；26- high pressures are filled
Note valve；
201- headers；202- end caps；203- side plates；204- flat tubes；205- fins；206- inside apertures.
Embodiment
The present invention is described in detail for shown each embodiment below in conjunction with the accompanying drawings, but it should explanation, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to these embodiment institute work energy, method,
Or equivalent transformation or replacement in structure, belong within protection scope of the present invention.
Join shown in Fig. 1 and Fig. 2, present embodiments provide a kind of gravity type heat exchanger of 2X2 groups module, including supporter
11 and the first heat exchange group and the second heat exchange group that are connected with supporter 11；First heat exchange group includes the first core 21 and the
Two cores 22, the second heat exchange group include the 3rd core 25 and the 4th core 26；First core 21 and the 3rd core 23 are arranged in
Low level, the second core 22 and the 4th core 24 are arranged in a high position, and the first core 21 is connected with the second core 22 by connecting pipe 25
Logical, the 3rd core 23 is connected with the 4th core 24 by connecting pipe；Liquid is filled with first core 21 and the 3rd core 23
Working medium (by filling 400g working medium after vacuumizing 0.684MPa), liquid refrigerant is set to when environment temperature reaches setting value
Start gasification, so that liquid refrigerant is converted into gaseous working medium；Second core 22 and the 4th core 24 are used to accommodate gaseous state work
Matter, gaseous working medium is converted into liquid refrigerant in the second core 22 and the 4th core 24, and is back to first under the effect of gravity
21 and the 3rd core 23 of core.
When environment temperature reaches design temperature in the cabinet of base station, the first core 21 and the 3rd core 23 are (equivalent to steaming
Hair device) in liquid refrigerant begin to boil off that (liquid refrigerant in the present embodiment the first core 21 and the 3rd core 23 is in environment temperature
Automatic start gasification when degree reaches 25 DEG C), it is changed into gaseous working medium, gaseous working medium is in the first core 21 and the 3rd core 23
Inside rises by capillarity, while heat is taken out of, and heat release so that the first core 21 and the 3rd core 23 become heat
End；When gaseous working medium is raised to the second core 22 and the 4th core 24 (equivalent to condenser), gaseous working medium starts to liquefy, and is changed into
Liquid refrigerant, while by heat absorption, reduce ambient temperature, and heat release, it is downward along connecting pipe 25 by gravity
Flow back into the first core 21 and the 3rd core 23.When environment temperature constantly changes, handed over by the first heat exchange group, the second heat
A group automatic start is changed, to ensure the cabinet temperature inside constant temperature of base station.
The heat exchanger reaches scattered by the physic vaporization (heat absorption) of core internal working medium and the transformation of liquefaction (heat release)
The effect of heat, without consuming electric energy；Heat exchanger is enclosed construction, and working medium constantly changes into gaseous state in inside by liquid,
Liquid is changed into by gaseous state again, returns to lower part by self gravitation afterwards into liquid, simple in structure, operational reliability is high, and does not have
There is any discharge, environmental pollution will not be caused.
Join shown in Fig. 3 to Fig. 7, the first core 21, the second core 22, the 3rd core 23 and the 4th core 24 include being used to hold
Receive multigroup flat tube 204 of working medium, fin 205, input terminal and the output terminal connection of flat tube 204 are connected between adjacent flat tube 204
There is header 201,201 both ends of header are provided with end cap 202.Header 201 is connected with connecting pipe 25.Working medium can be in flat tube
Flowing in 204, and realize gasification and liquefaction process, fin 205 is used for heat conduction.It is equipped with and is used for along cross-wise direction inside flat tube 204
Form the inside aperture 206 (as shown in figure 5, dimensional units are mm in figure) of microchannel.The quantity of inside aperture 206 is big in the present embodiment
In or equal to 11 (as shown in fig. 6, dimensional units are mm in figure).
In the present embodiment, connecting pipe 25 is connected with high pressure charging valve 26 (carrying special screw thread cap), can pass through high pressure
The liquid filling body working medium into the first core 21 and the 3rd core 23 of charging valve 26.
Join shown in Fig. 1 to Fig. 3, the first core 21, the second core 22, the 3rd core 23 and the 4th core 24 are further included and be used for
The side plate 203 being connected with supporter 11, side plate 203 are connected by side plate 12 with supporter 11, make the first core 21, the 3rd core
Between 23 and supporter, and insulating space is formed between the second core 22, the 4th core 24 and supporter 11, easy to exchange heat.This
Embodiment is by the first core 21 and 23 arranged stacked of the 3rd core, by the second core 22 and 24 arranged stacked of the 4th core, with section
About space.
In the present embodiment, supporter 11 uses rectangular slab, the length of the first core 21 and the 3rd core 23 along rectangular slab
Direction is arranged on a side in back-to-back two sides of rectangular slab, and the second core 22 and the 4th core 24 are arranged in separately
On one side, to improve stability.
In the present embodiment, supporter 11, side plate 12 can be made of metallic plate (such as galvanized sheet).
In the present embodiment, liquid refrigerant can use R134a (HFA 134a).
Originally the gravity type heat exchanger of the 2X2 group modules of offer is implemented, using micro channel heat tubular type structure, heat exchange efficiency
Up to 120W/K, and have the following technical effect that：
1) working medium inside core can voluntarily start when environment temperature reaches a certain temperature, without relying on external force and control
Signal enabling, it is therefore not necessary to be equipped with driving device and control device, saves the energy.
2) without outside condenser, working medium completes mutually converting for air-liquid state inside the core of closing, simple in structure,
Operational reliability is high.
3) without any discharge, and internal working medium will not be revealed and cause environmental pollution.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should all be included in the protection scope of the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Claims (10)
- A kind of 1. gravity type heat exchanger of 2X2 groups module, it is characterised in that including supporter (11) and with the supporter (11) the first heat exchange group and the second heat exchange group of connection；The first heat exchange group includes the first core (21) and the second core Body (22), the second heat exchange group include the 3rd core (25) and the 4th core (26)；First core (21) and the 3rd core (23) are arranged in low level, second core (22) and the 4th core (24) cloth A high position is placed in, first core (21) is connected with second core (22) by connecting pipe (25), the 3rd core (23) connected with the 4th core (24) by connecting pipe；Liquid refrigerant is filled with first core (21) and the 3rd core (23), the liquid refrigerant is set in environment Temperature starts gasification when reaching setting value, so that the liquid refrigerant is converted into gaseous working medium；Second core (22) and the 4th core (24) are used to accommodate the gaseous working medium, and the gaseous working medium is described second Be converted into liquid refrigerant in core (22) and the 4th core (24), and be back under the effect of gravity first core (21) and 3rd core (23).
- A kind of 2. gravity type heat exchanger of 2X2 groups module according to claim 1, it is characterised in that first core Body (21), the second core (22), the 3rd core (23) and the 4th core (24) include being used for the multigroup flat tube for accommodating the working medium (204), fin (205), input terminal and the output terminal connection of the flat tube (204) are connected between the adjacent flat tube (204) There is header (201).
- A kind of 3. gravity type heat exchanger of 2X2 groups module according to claim 2, it is characterised in that the flat tube (204) it is internal that the inside aperture (206) for being used for forming microchannel is equipped with along cross-wise direction.
- A kind of 4. gravity type heat exchanger of 2X2 groups module according to claim 3, it is characterised in that the inside aperture (206) quantity is greater than or equal to 11.
- A kind of 5. gravity type heat exchanger of 2X2 groups module according to claim 3, it is characterised in that the header (201) connected with the connecting pipe (25).
- A kind of 6. gravity type heat exchanger of 2X2 groups module according to claim 5, it is characterised in that the connecting tube Part (25) is connected with the high pressure charging valve (26) for filling the liquid refrigerant.
- A kind of 7. gravity type heat exchanger of 2X2 groups module according to claim 6, it is characterised in that first core Body (21), the second core (22), the 3rd core (23) and the 4th core (24) are further included for being connected with the supporter (11) Side plate (203), the side plate (203) is connected by side plate (12) with the supporter (11), so that first core (21), formed and isolated between the 3rd core (23), and second core (22), the 4th core (24) and the supporter (11) Space.
- A kind of 8. gravity type heat exchanger of 2X2 groups module according to claim 7, it is characterised in that the supporter (11) it is rectangular slab, the length direction of first core (21) and the 3rd core (23) along the rectangular slab is arranged in the square On a side in back-to-back two sides of shape plate, second core (22) and the 4th core (24) are arranged in another On side.
- A kind of 9. gravity type heat exchanger of 2X2 groups module according to claim 1, it is characterised in that the liquid work Matter is R134a.
- A kind of 10. gravity type heat exchanger of 2X2 groups module according to claim 9, it is characterised in that the liquid work Matter is set to start gasification when environment temperature reaches 25 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463001.XA CN107990770A (en) | 2017-12-28 | 2017-12-28 | A kind of gravity type heat exchanger of 2X2 groups module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463001.XA CN107990770A (en) | 2017-12-28 | 2017-12-28 | A kind of gravity type heat exchanger of 2X2 groups module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107990770A true CN107990770A (en) | 2018-05-04 |
Family
ID=62043240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711463001.XA Pending CN107990770A (en) | 2017-12-28 | 2017-12-28 | A kind of gravity type heat exchanger of 2X2 groups module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107990770A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819000A (en) * | 2010-04-23 | 2010-09-01 | 南京工业大学 | Disconnect-type phase transition heat exchanger |
| GB201110161D0 (en) * | 2010-06-18 | 2011-07-27 | Hitachi Plant Technologies Ltd | Refrigerant circulation apparatus |
| CN202126078U (en) * | 2011-06-24 | 2012-01-25 | 北京万禾创新高新技术有限公司 | Microcirculation gravity type heat-pipe heat exchange device |
| CN202350223U (en) * | 2011-12-12 | 2012-07-25 | 苏州朗吉温控系统有限公司 | Air conditioner and heat pipe all-in-one machine of engine room |
| CN202814179U (en) * | 2012-08-22 | 2013-03-20 | 浙江康盛热交换器有限公司 | Heat pipe heat exchanger used in cooling system of communication machine room |
| CN103307658A (en) * | 2012-03-13 | 2013-09-18 | 华为技术有限公司 | Heat exchanger and machine cabinet |
| CN105066273A (en) * | 2015-08-21 | 2015-11-18 | 国网上海市电力公司 | Heat exchanger suitable for capacitor and reactor chamber |
| CN207850145U (en) * | 2017-12-28 | 2018-09-11 | 江西鑫田车业有限公司 | A kind of gravity type heat exchanger of 2X2 groups module |
-
2017
- 2017-12-28 CN CN201711463001.XA patent/CN107990770A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819000A (en) * | 2010-04-23 | 2010-09-01 | 南京工业大学 | Disconnect-type phase transition heat exchanger |
| GB201110161D0 (en) * | 2010-06-18 | 2011-07-27 | Hitachi Plant Technologies Ltd | Refrigerant circulation apparatus |
| CN202126078U (en) * | 2011-06-24 | 2012-01-25 | 北京万禾创新高新技术有限公司 | Microcirculation gravity type heat-pipe heat exchange device |
| CN202350223U (en) * | 2011-12-12 | 2012-07-25 | 苏州朗吉温控系统有限公司 | Air conditioner and heat pipe all-in-one machine of engine room |
| CN103307658A (en) * | 2012-03-13 | 2013-09-18 | 华为技术有限公司 | Heat exchanger and machine cabinet |
| CN202814179U (en) * | 2012-08-22 | 2013-03-20 | 浙江康盛热交换器有限公司 | Heat pipe heat exchanger used in cooling system of communication machine room |
| CN105066273A (en) * | 2015-08-21 | 2015-11-18 | 国网上海市电力公司 | Heat exchanger suitable for capacitor and reactor chamber |
| CN207850145U (en) * | 2017-12-28 | 2018-09-11 | 江西鑫田车业有限公司 | A kind of gravity type heat exchanger of 2X2 groups module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | A review on thermosyphon and its integrated system with vapor compression for free cooling of data centers | |
| CN103090583A (en) | Magnetic refrigeration device and magnetic heating module thereof | |
| CN101886836B (en) | Machine room heat removal device for evaporation cooling type heat-pipe heat exchange | |
| CN207235339U (en) | Thermal Performance of Micro Channels equipment | |
| CN201989796U (en) | Micro-channel heat exchange condensing type rail transit air conditioning unit | |
| CN207850145U (en) | A kind of gravity type heat exchanger of 2X2 groups module | |
| CN207763550U (en) | A kind of gravity type heat exchanger of 1X1 groups module | |
| CN204630441U (en) | A kind of separated high-efficiency heat pipe heat exchanger | |
| CN107990770A (en) | A kind of gravity type heat exchanger of 2X2 groups module | |
| CN207763549U (en) | A kind of gravity type heat exchanger | |
| CN203561015U (en) | Multi-layer heat pipe heat-exchange-type semiconductor refrigeration system | |
| CN103557570B (en) | A kind of multilayer heat pipe heat exchange type semiconductor refrigeration system | |
| CN108088293A (en) | A kind of gravity type heat exchanger of 1X1 groups module | |
| CN203605514U (en) | Air-cooling compression condensing unit of microchannel heat exchanger | |
| CN206094638U (en) | Hot electric refrigeration device of heat pipe cooled | |
| CN202792717U (en) | All aluminum parallel flow evaporator | |
| CN202143338U (en) | Machine room device parallel-connection cooling system | |
| CN207763548U (en) | A kind of gravity type heat exchanger | |
| CN105509527B (en) | Mixed cold storage system based on liquid and solid-liquid working medium | |
| CN210772878U (en) | Air source heat pump energy station | |
| CN111542203B (en) | T-shaped pipeline chip radiator based on impingement cooling and complete device | |
| CN201751772U (en) | Air conditioner and pipe diameter heat exchanger thereof | |
| CN203431797U (en) | Self-circulating cooling system for heat dissipation of LED lamp | |
| CN202511384U (en) | Top air conditioner for passenger vehicle | |
| CN202813668U (en) | Variable frequency air conditioner with novel chip cooling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |