CN107883574A - Using the air energy heat pump water heater of simultaneously pipe heat exchanger - Google Patents
Using the air energy heat pump water heater of simultaneously pipe heat exchanger Download PDFInfo
- Publication number
- CN107883574A CN107883574A CN201711257556.9A CN201711257556A CN107883574A CN 107883574 A CN107883574 A CN 107883574A CN 201711257556 A CN201711257556 A CN 201711257556A CN 107883574 A CN107883574 A CN 107883574A
- Authority
- CN
- China
- Prior art keywords
- heat transfer
- transfer medium
- heat exchanger
- evaporator
- air cooler
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 230000008676 import Effects 0.000 claims abstract description 22
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003507 refrigerant Substances 0.000 claims abstract description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 4
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000010257 thawing Methods 0.000 claims description 5
- 239000002470 thermal conductor Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 4
- 229960004424 carbon dioxide Drugs 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010219 correlation analysis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention uses and the air energy heat pump water heater of pipe heat exchanger,Including shell,The heat pump circulating system that controller connects with controller is provided with shell,Controller is arranged on the top of shell,Controller is used for the startup for controlling heat pump circulating system,Heat pump circulating system includes compressor,Air cooler,Intermediate Heat Exchanger,Evaporator and electric expansion valve,The air cooler and the Intermediate Heat Exchanger are using simultaneously pipe heat exchanger,The outlet of compressor is divided into two branch roads,One is connected with the import of air cooler,Another is connected with the import of evaporator,Intermediate Heat Exchanger is located in the middle part of the plate-like of air cooler,And it is fixed on the top of shell,Evaporator is connected with blade motor,And compressor is fixed on the bottom of shell,Compressor and evaporator are respectively positioned on the lower section of air cooler,Check valve is connected with the pipeline of electric expansion valve,The refrigerant being arranged in heat pump circulating system is carbon dioxide.
Description
Technical field
The present invention relates to Teat pump boiler technical field, and in particular to a kind of independently-powered use and pipe heat exchanger
Air energy heat pump water heater.
Background technology
With current rapid development of economy and the raising of living standards of the people, the energy needed for building air conditioning, bath hot water
Loss-rate example is increasing.Into after 21 century, energy-conservation already turns into a Long-term Development Strategy of China's sustainable development, profit
It is to solve the maximally efficient one kind of domestic hot water's high energy consumption issues with low-grade green energy resources such as solar energy, air energy, geothermal energies
Approach.As a kind of efficient energy-saving device, air source hot pump water heater will be in water heater market in occupation of critical positions.Its work
It is to consume a part of electric energy as cost as principle, is absorbed by thermodynamic cycle aerial heat is stored,
So as to produce domestic hot-water, its Energy Efficiency Ratio is 3 ~ 4 times of electric heater.Air source hot pump water heater whole year operating condition changes model
Enclose larger, thermal source air side circumstance temperature is typically at -7 ~ 43 DEG C, and in general, circumstance temperature is higher, and system energy efficiency and heating capacity are also accordingly got over
It is high.
The heat storage water tank of air source hot pump water heater is all larger, typically in the range of 150L ~ 450L.When system is completed to heat
Afterwards, it can obtain the hot water of a whole courage.At present, market survey is passed through, it is thus understood that user is after big flow water to the quick of hot water
Recovery has certain demand, and such as more people are largely with there is 1 people to be badly in need of having a bath again after water, and now system can only pass through electrical heating or heat pump
Realize demand of the hot water to user with reference to electrically heated mode, that is, reheat a whole gallbladder-heat water, the time required to this process compared with
It is long.But for some other users, usually their demands to hot water are smaller, simply needed under festivals or holidays or specific occasion
The hot water of larger capacity, especially combine the auxiliary hot mode of heating of electricity in cold zone heat pump and also be difficult to meet user's request.
In addition, through Market Feedback, conventional heat exchanger using the long-term corrosion of medium in use because put corruption
Erosion or spot corrosion cause heat exchanger and complete machine to scrap, and indirect way of contact heat exchange because middle heat transferring medium aging or because
Two contact surfaces that expand with heat and contract with cold become it is big cause heat transfer effect reduce and can not normal use, will with the development R477 working medium in market
It is widely used, but is greatly improved in the bearing requirements of high-pressure working medium application while heat exchanger, if sleeve pipe/plate type heat exchanger is because adding
The material cost of work shaping is high and easily causes deformation or rupture potential safety hazard under elevated pressure conditions, increases unit fault rate
And repair rate.
The content of the invention
It is an object of the invention to for deficiency of the prior art, and a kind of use that can quickly heat is provided and managed
The air energy heat pump water heater of formula heat exchanger.
The purpose of the present invention is achieved through the following technical solutions：
The air energy heat pump water heater using simultaneously pipe heat exchanger is provided, using the air energy heat pump hot water of simultaneously pipe heat exchanger
Device, it is characterised in that：Including shell, the heat pump circulating system that controller connects with the controller is provided with the shell,
The controller is arranged on the top of the shell, and the controller is used for the startup for controlling the heat pump circulating system, described
Heat pump circulating system includes compressor, air cooler, Intermediate Heat Exchanger, evaporator and electric expansion valve；The air cooler and institute
State Intermediate Heat Exchanger using and pipe heat exchanger, including at least one heat transfer medium pipe and at least one by heat transfer medium pipe,
The heat transfer medium pipe and by heat transfer medium pipe parallel set and integrally welded or global formation, the tube wall of heat transfer medium pipe
And be bonded to each other by the gap between the tube wall of heat transfer medium pipe by integrally welded or global formation thermal conductor, conduct heat
Heat transfer medium in medium tube and by heat transfer medium pipe by heat transfer medium reverse counterflow；The outlet of the compressor is divided into two
Individual branch road, one is connected with the heat transfer medium pipe import of the air cooler, and another is connected with the import of the evaporator, described
The magnetic valve for defrosting, the heat transfer medium pipe of the air cooler are provided between the connection of the pipe arrangement of compressor and the evaporator
Outlet is connected with the heat transfer medium pipe import of the Intermediate Heat Exchanger, the outlet of the evaporator and the quilt of the Intermediate Heat Exchanger
The import of heat transfer medium pipe connects, the import that the compressor is connected by the outlet of heat transfer medium pipe of the Intermediate Heat Exchanger, middle
The import that the electric expansion valve is connected by the outlet of heat transfer medium pipe of heat exchanger, the air cooler by heat transfer medium pipe import
It is respectively water inlet and delivery port with outlet, the water inlet is connected with the flow control valve of control water-carrying capacity, the air cooling
Device is coiled spiral setting, and the water inlet and the delivery port are located at the upper and lower part of the air cooler, and the air cooling
Device is arranged on the side of the control, and is located at the disk of the air cooler positioned at the top of the shell, the Intermediate Heat Exchanger
In the middle part of shape, and the top of the shell is fixed on, the lower section of the air cooler sets the evaporator, and the evaporator is connected with
Blade motor, the evaporator are positioned close to the one side of the outer side, and the compressor is located at the one of the evaporator
Side, and the compressor is fixed on the bottom of the shell, the compressor and the evaporator are respectively positioned on the air cooler
Lower section, check valve is connected with the pipeline of the electric expansion valve, the refrigerant being arranged in the heat pump circulating system is two
Carbonoxide.
Beneficial effects of the present invention：The use of the present invention and the air energy heat pump water heater of pipe heat exchanger, utilize dioxy
Change carbon as refrigerant, can quickly heat, evaporator is positioned close to the side of shell, air inlet structure after air-out before formation
System, provided with multistage supercooling and intermediate heat transfer mode, automatic defrosting switching is carried out using magnetic valve, enables flow electric control valve
It is precisely controlled water-carrying capacity to be adjusted according to hot water demand, greatly promotes the efficiency of heating surface, while also can guarantee that system can be stablized
Continuous heating operates, and is used as throttle part by the use of electric expansion valve, under different operating conditions, to the performance of this system and reliably
Property has carried out correlation analysis, to ensure the reliable in quality of product；Air cooler and the Intermediate Heat Exchanger are using simultaneously pipe type heat transfer
Device, heat transfer medium pipe can use welding or other monolithic molding modes, between tube wall with parallel by heat transfer medium pipe between two pipes
Gap be bonded to each other by integrally welded or global formation thermal conductor, two pipes are exchanged heat using reverse counterflow, monoblock type
Frame mode evaded indirect heat exchange effect difference problem generation, several heat transfer medium pipes and several by heat transfer medium pipe simultaneously
OK, the problem of spot corrosion causes heat exchanger and complete machine to scrap is avoided；And sleeve pipe/plate type heat exchanger is avoided because shaping
Material cost is high and easily causes the problem of deforming or rupturing potential safety hazard under elevated pressure conditions.
Brief description of the drawings
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not form any limit to the present invention
System, for one of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to the following drawings
Other accompanying drawings.
Fig. 1 is the front view of the air energy heat pump water heater of the use of the present invention and pipe heat exchanger；
Fig. 2 is the top view of the air energy heat pump water heater of the use of the present invention and pipe heat exchanger；
Fig. 3 is the right view of the air energy heat pump water heater of the use of the present invention and pipe heat exchanger；
Fig. 4 is in Fig. 1 and the lateral cross section structural representation of pipe heat exchanger；
Fig. 5 is in Fig. 1 and the longitudinal cross-section structural representation of pipe heat exchanger；
Fig. 6 is the heat pump circulating system heat pump schematic diagram of the present invention；
Include in Fig. 1-Fig. 6：
1- shells；
2- controllers；
3- heat pump circulating systems, compressor 30, air cooler 31, Intermediate Heat Exchanger 32, evaporator 33, blade motor 330, electronics are swollen
Swollen valve 34, check valve 340, magnetic valve 35, heat transfer medium pipe 100, by heat transfer medium pipe 200 ,-thermal conductor 300.
Embodiment
The invention will be further described with the following Examples.
The use of the present invention and the embodiment of the air energy heat pump water heater of pipe heat exchanger, such as Fig. 1-Fig. 6 institutes
Show, the air energy heat pump water heater using simultaneously pipe heat exchanger includes shell 1, and the He of controller 2 is provided with the shell 1
The heat pump circulating system 3 that the controller 2 connects, the controller 2 are arranged on the top of the shell 1, and the controller 2 is used
In the startup for controlling the heat pump circulating system 3, the heat pump circulating system 3 includes compressor 30, air cooler 31, intermediate heat transfer
Device 32, evaporator 33 and electric expansion valve 34, the outlet of the compressor 30 are divided into two branch roads, one and the air cooler
31 import connection, another is connected with the import of the evaporator 33, the pipe arrangement of the compressor 30 and the evaporator 33
The magnetic valve 35 for defrosting is provided between connection, automatic defrosting switching, the Intermediate Heat Exchanger are carried out using magnetic valve 35
32 are provided with two imports and two outlets, and the outlet of the air cooler 31 is connected with an import of the Intermediate Heat Exchanger 32,
The outlet of the evaporator 33 is connected with another import of the Intermediate Heat Exchanger 32, and two of the Intermediate Heat Exchanger 32 go out
Mouthful, the outlet of an Intermediate Heat Exchanger 32 connects the import of the compressor 30, another Intermediate Heat Exchanger 32
Outlet connects the import of the electric expansion valve 34, and the air cooler 31 is provided with the water inlet and delivery port of current disengaging, institute
The flow control valve that water inlet is connected with control water-carrying capacity is stated, flow control valve is enabled and is precisely controlled water-carrying capacity according to hot water need
Ask and be adjusted, greatly promote the efficiency of heating surface, while also can guarantee that system can stablize continuous heating operating, the air cooler 31
Set for coiled spiral, the water inlet and the delivery port are located at the upper and lower part of the air cooler 31, and the air cooling
Device 31 is arranged on the side of the control, and is located at the air cooler positioned at the top of the shell 1, the Intermediate Heat Exchanger 32
In the middle part of 31 plate-like, and the top of the shell 1 is fixed on, the lower section of the air cooler 31 sets the evaporator 33, described
Evaporator 33 is connected with blade motor 330, and the evaporator 33 is positioned close to the one side in the outside of shell 1, by the steaming
Hair device 33 is positioned close to the side of shell 1, air intake structural system after air-out before formation, and the compressor 30 is located at the evaporation
The side of device 33, and the compressor 30 is fixed on the bottom of the shell 1,33 equal position of the compressor 30 and the evaporator
In being connected with check valve 340 on the lower section of the air cooler 31, the pipeline of the electric expansion valve 34, with the electric expansion valve
34 are used as throttle part, under different operating conditions, correlation analysis have been carried out to the Performance And Reliability of this system, to ensure to produce
The reliable in quality of product, the refrigerant being arranged in the heat pump circulating system 3 is carbon dioxide, utilizes carbon dioxide as refrigeration
Agent, it can quickly heat, meet the needs of user.
Wherein, air cooler 31 and Intermediate Heat Exchanger 32 using and pipe heat exchanger, including heat transfer medium pipe 100 and passed
Thermal medium pipe 200, the heat transfer medium pipe 100 and by heat transfer medium pipe 200 parallel set and it is integrally welded or integral into
Type, the tube wall of heat transfer medium pipe 100 and is passed through integrally welded or overall by the gap between the tube wall of heat transfer medium pipe 200
The thermal conductor 300 of shaping is bonded to each other, heat transfer medium in heat transfer medium pipe and by anti-by heat transfer medium in heat transfer medium pipe
To adverse current
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than model is protected to the present invention
The limitation enclosed, although being explained with reference to preferred embodiment to the present invention, one of ordinary skill in the art should manage
Solution, can modify or equivalent substitution to technical scheme, without departing from technical solution of the present invention essence and
Scope.
Claims (1)
1. using the air energy heat pump water heater of simultaneously pipe heat exchanger, it is characterised in that：Including shell, it is provided with the shell
The heat pump circulating system that controller connects with the controller, the controller are arranged on the top of the shell, the control
Device is used for the startup for controlling the heat pump circulating system, and the heat pump circulating system includes compressor, air cooler, intermediate heat transfer
Device, evaporator and electric expansion valve；The air cooler and the Intermediate Heat Exchanger are using simultaneously pipe heat exchanger, including at least
One heat transfer medium pipe and it is at least one by heat transfer medium pipe, the heat transfer medium pipe and by heat transfer medium pipe parallel set and weld
Be connected into one or global formation, the tube wall of heat transfer medium pipe and by the gap between the tube wall of heat transfer medium pipe by being welded into
The thermal conductor of one or global formation is bonded to each other, and heat transfer medium in heat transfer medium pipe and is passed in heat transfer medium pipe
Thermal medium reverse counterflow；The outlet of the compressor is divided into two branch roads, one with the heat transfer medium pipe import of the air cooler
Connection, another is connected with the import of the evaporator, is provided between the pipe arrangement connection of the compressor and the evaporator
For the magnetic valve of defrosting, the outlet of heat transfer medium pipe and the heat transfer medium pipe import of the Intermediate Heat Exchanger of the air cooler connect
Connect, the outlet of the evaporator is connected with the Intermediate Heat Exchanger by heat transfer medium pipe import, the quilt of the Intermediate Heat Exchanger
The outlet of heat transfer medium pipe connects the import of the compressor, Intermediate Heat Exchanger to connect the electronics by the outlet of heat transfer medium pipe swollen
The import of swollen valve, the air cooler is respectively water inlet and delivery port by heat transfer medium pipe inlet and outlet, the water inlet
Place is connected with the flow control valve of control water-carrying capacity, and the air cooler is set for coiled spiral, the water inlet and the water outlet
Mouth is located at the upper and lower part of the air cooler, and the air cooler is arranged on the side of the control, and is located at the shell
Top, the Intermediate Heat Exchanger is located in the middle part of the plate-like of the air cooler, and is fixed on the top of the shell, the air cooling
The lower section of device sets the evaporator, and the evaporator is connected with blade motor, and the evaporator is positioned close to the shell
The one side in outside, the compressor is located at the side of the evaporator, and the compressor is fixed on the bottom of the shell, institute
State compressor and the evaporator is respectively positioned on the lower section of the air cooler, be connected with the pipeline of the electric expansion valve unidirectional
Valve, the refrigerant being arranged in the heat pump circulating system are carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711257556.9A CN107883574A (en) | 2017-12-04 | 2017-12-04 | Using the air energy heat pump water heater of simultaneously pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711257556.9A CN107883574A (en) | 2017-12-04 | 2017-12-04 | Using the air energy heat pump water heater of simultaneously pipe heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107883574A true CN107883574A (en) | 2018-04-06 |
Family
ID=61772865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711257556.9A Pending CN107883574A (en) | 2017-12-04 | 2017-12-04 | Using the air energy heat pump water heater of simultaneously pipe heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107883574A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782419A (en) * | 2009-10-14 | 2012-11-14 | 开利公司 | Dehumidification control in refrigerant vapor compression systems |
| CN202869321U (en) * | 2012-11-13 | 2013-04-10 | 中国扬子集团滁州扬子空调器有限公司 | Coaxial type double-pipe heat exchanger |
| CN203224030U (en) * | 2013-04-23 | 2013-10-02 | Tcl空调器(中山)有限公司 | Circulation type heat pump water heater |
| JP2014231942A (en) * | 2013-05-29 | 2014-12-11 | リンナイ株式会社 | Water heater |
| JP2015045425A (en) * | 2013-08-27 | 2015-03-12 | 株式会社ノーリツ | Heat pump hot water supply device |
| CN105509377A (en) * | 2015-12-22 | 2016-04-20 | 珠海格力电器股份有限公司 | Trans critical co2Circulating system, heat pump water heater and defrosting method |
| CN207649101U (en) * | 2017-12-04 | 2018-07-24 | 广东纽恩泰新能源科技发展有限公司 | A kind of air energy heat pump water heater using simultaneously pipe heat exchanger |
-
2017
- 2017-12-04 CN CN201711257556.9A patent/CN107883574A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782419A (en) * | 2009-10-14 | 2012-11-14 | 开利公司 | Dehumidification control in refrigerant vapor compression systems |
| CN202869321U (en) * | 2012-11-13 | 2013-04-10 | 中国扬子集团滁州扬子空调器有限公司 | Coaxial type double-pipe heat exchanger |
| CN203224030U (en) * | 2013-04-23 | 2013-10-02 | Tcl空调器(中山)有限公司 | Circulation type heat pump water heater |
| JP2014231942A (en) * | 2013-05-29 | 2014-12-11 | リンナイ株式会社 | Water heater |
| JP2015045425A (en) * | 2013-08-27 | 2015-03-12 | 株式会社ノーリツ | Heat pump hot water supply device |
| CN105509377A (en) * | 2015-12-22 | 2016-04-20 | 珠海格力电器股份有限公司 | Trans critical co2Circulating system, heat pump water heater and defrosting method |
| CN207649101U (en) * | 2017-12-04 | 2018-07-24 | 广东纽恩泰新能源科技发展有限公司 | A kind of air energy heat pump water heater using simultaneously pipe heat exchanger |
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| PB01 | Publication | ||
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Application publication date: 20180406 |
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