CN206944474U - A kind of new more cisten mechanism wall hanging type heat pump water heaters - Google Patents
A kind of new more cisten mechanism wall hanging type heat pump water heaters Download PDFInfo
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- CN206944474U CN206944474U CN201720405321.9U CN201720405321U CN206944474U CN 206944474 U CN206944474 U CN 206944474U CN 201720405321 U CN201720405321 U CN 201720405321U CN 206944474 U CN206944474 U CN 206944474U
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Abstract
The utility model discloses a kind of new more cisten mechanism wall hanging type heat pump water heaters,Multiple water tanks are provided with by water pipe serial communication inside the housing,Compressor by refrigerant pipe connection into a circulation loop,Four-way valve,Evaporator,Reservoir,Throttle part and heat exchanger,Heat exchanger has been arranged in parallel multiple,Magnetic valve is provided with the refrigerant pipe branch road for connecting each heat exchanger,Multiple magnetic valves are controlled by solenoid valve controller,Multiple heat exchangers are respectively wound around the outside wall surface of multiple water tanks or placed inside water tank,Compressor is set before wherein one end or enclosure inside the housing,Evaporator is set before inside the housing,Cross flow fan is additionally provided with before inside the housing,Formed with the corresponding air inlet of flowing wind direction with cross flow fan and air outlet on shell,The utility model effectively increases the scope of air circulation,Improve the operating efficiency of Teat pump boiler,Reduce noise,Improve the comfortableness of people's living environment.
Description
Technical field
It the utility model is related to a kind of Teat pump boiler, more particularly to a kind of new more cisten mechanism wall hanging type heat pump hot water
Device, belong to Teat pump boiler technical field.
Background technology
Existing wall hanging type heat pump water heater is all single cisten mechanism, main or same using vertical type Teat pump boiler
Part and structure type, simply made vertical type Teat pump boiler into tiled configuration, integral space utilization ratio is poor, volume and
Weight is all very big, and firing rate is slow, moreover, the air inlet/outlet mode of existing wall hanging type heat pump water heater, causes existing wall hanging
Formula Teat pump boiler requires higher to installation environment, and existing wall hanging type heat pump water heater air circulation scope is small, Heat Pump
The thermal efficiency of hydrophone work is not high, meanwhile, blower fan in existing wall hanging type heat pump water heater typically all using centrifugal blower or
Axial flow blower, noise is larger, influences the comfortableness of people's living environment.
The content of the invention
To solve the deficiencies in the prior art, the utility model provides a kind of new more cisten mechanism wall hanging type heat pump hot water
Device, it is easily installed and uses, effectively increases the scope of air circulation, improve the operating efficiency of Teat pump boiler, firing rate is fast,
Noise is reduced, improves the comfortableness of people's living environment.
Technical scheme is used by the utility model：
A kind of new more cisten mechanism wall hanging type heat pump water heaters, including heat pump main frame inside the housing and water are set
Case, the water tank inside the housing behind transverse horizontal be provided with multiple, rear shell vertical plane of the multiple water tank along shell
Setting is spaced substantially equidistant up and down, the multiple water tank is by water pipe serial communication, wherein water tank and water inlet positioned at series connection head end
Pipe connects, and the water tank positioned at series connection end connects with outlet pipe, in the outer surface of water tank covered with foaming layer, the heat pump main frame
Including connecting into the compressor of a circulation loop, four-way valve, evaporator, reservoir, throttle part and changing by refrigerant pipe
Hot device, the heat exchanger have been arranged in parallel multiple, and the multiple heat exchanger is identical with multiple water tank quantity, in each heat exchange of connection
Magnetic valve is provided with the refrigerant pipe branch road of device, multiple magnetic valves are controlled by solenoid valve controller, the multiple heat exchanger point
The outside wall surface of multiple water tanks is not wrapped in or is placed inside water tank, passes through the break-make of solenoid valve control refrigerant pipe branch road, refrigerant pipe
The break-make of branch road determines whether the heat exchanger on the refrigerant pipe branch road works, i.e., whether the heat exchanger on the refrigerant pipe branch road is to institute
The water tank of winding is heated, and the compressor is arranged on before wherein one end or enclosure of the enclosure, institute
State evaporator to set before inside the housing, be above additionally provided with cross flow fan inside the housing, the evaporator with pass through
Flow fan is parallel to each other and set along the axis direction of shell, and the evaporator and cross flow fan are located at before enclosure
Centre, formed with the corresponding air inlet of flowing wind direction with the cross flow fan and air outlet on the shell.
As it is of the present utility model further preferably, be used to be provided with water pipe on the water pipe that connects between water tank and water tank
Magnetic valve or check valve, the water solenoid valve are controlled by described solenoid valve controller, when outlet pipe is closed,
Solenoid valve controller control water solenoid valve is closed, and the water in water tank and water tank is in not circulation status, when water outlet pipe part in
Open mode, solenoid valve controller control water solenoid valve are opened, and water tank is in circulation status with the water in water tank.
As it is of the present utility model further preferably, described heat exchanger is micro-channel heat exchanger, the Thermal Performance of Micro Channels
Device is wrapped in the outside wall surface of water tank, improves the heat exchange efficiency and service life of heat exchanger.
Further preferably described evaporator is flat type, c-type or L-type evaporator as of the present utility model, described flat
Straight type, c-type or L-type evaporator are located at the air inlet side of cross flow fan, and c-type or L-type evaporator inleakage are small, heat exchange efficiency
Height, make full use of overall structure space.
As it is of the present utility model further preferably, described evaporator is the tubular type that metallic aluminium or metallic copper material make
Evaporator or micro-channel evaporator, effectively mitigate the weight of evaporator, the heat transfer effect and work for further improving evaporator are imitated
Rate, efficient energy-saving.
As it is of the present utility model further preferably, described compressor is horizontal compressor or vertical compressor, works as pressure
Contracting machine selects vertical compressor when setting wherein one end inside the housing, is selected when compressor is set before inside the housing
With horizontal compressor, realize compact-sized, reduce volume, make full use of overall structure space.
As it is of the present utility model further preferably, described cross flow fan is provided with multiple, described cross flow fan bags
Include Dual-output shaft motor and be arranged on Dual-output shaft motor both ends and export axis connection with two of Dual-output shaft motor respectively
Two through-flow fan blades, Dual-output shaft motor drive two through-flow fan blades to rotate, are effectively increased air quantity and its mobility.
As it is of the present utility model further preferably, described Dual-output shaft motor is double output shaft DC brushless motor,
Effective noise reduction function, and working condition is adjustable, realizes the multi gear switching of cross flow fan discharge quantity of fan.
As it is of the present utility model further preferably, under the flowing wind direction of the cross flow fan is bottom in and top out or is enterprising
Go out, the air inlet/outlet mode of manufacture Teat pump boiler can be selected according to installation environment.
As it is of the present utility model further preferably, described water inlet pipe and outlet pipe is extended respectively to outside the bottom of shell
Side, it is easy to more cisten mechanism wall hanging type heat pump water heaters to be connected with exterior line.
The beneficial effects of the utility model are：Selective heating, phase can be carried out to the water in water tank according to water consumption
For traditional single cisten mechanism, water in whole water tank need not all be heated when water consumption is few, it is more in water consumption
When the water in water tank can be heated in batches, therefore the utility model is relative to traditional single water tank Teat pump boiler
Faster, water tank capacity can suitably increase more energy efficient, firing rate according to installation environment, water tank, compressor, evaporator and through-flow
The arrangement of blower fan, integrally-built space is taken full advantage of, reduce volume, mitigate weight, be easily installed use and the later stage is examined
The arrangement of maintenance, wherein evaporator and cross flow fan is repaiied, effectively increases heat exchange area, the scope of air circulation is increased, carries
The high operating efficiency of Teat pump boiler, and the DC brushless motor in cross flow fan effectively reduces noise, improves people
The comfortableness of living environment.
Brief description of the drawings：
Fig. 1 is the positive structure schematic of embodiment one；
Fig. 2 is the cross-sectional view of embodiment one；
Fig. 3 is the heat pump main frame principle schematic of embodiment one；
Main Reference Numerals implication is as follows in figure：
1- shells, 2- foaming layers, 3- water tanks, 4- water pipes, 5- outlet pipes, 6- water inlet pipes, 7- compressors, 8- four-way valves, 9-
Evaporator, 10- reservoirs, 11- throttle parts, 12- heat exchangers, 13- magnetic valves, 14- cross flow fans, 15- air inlets, 16- go out
Air port, 17- water solenoid valves, 18- refrigerant pipes, 31- water tanks one, 32- water tanks two, 121- heat exchangers one, 122- heat exchangers two,
131- magnetic valves one, 132- magnetic valves two.
Embodiment：
Specific introduction is done to the utility model with reference to the accompanying drawings and examples.
Embodiment one
As Figure 1-3：The present embodiment is a kind of new more cisten mechanism wall hanging type heat pump water heaters, including is arranged on outer
Heat pump main frame and water tank 3 inside shell 1, water tank 3 inside the shell 1 behind transverse horizontal be provided with two, two edges of water tank 3
The rear shell vertical plane of shell 1 is arranged above and below setting, and the left end of two water tanks 3 is interconnected by water pipe 4, wherein positioned at upper
Side water tank 3 connected with outlet pipe 5, underlying water tank 3 connects with water inlet pipe 6, the outer surface of two water tanks 3 covered with
Foaming layer 2, foaming layer are used to be incubated, and heat pump main frame includes connecting into the compressor 7, four of a circulation loop by refrigerant pipe 18
Port valve 8, evaporator 9, reservoir 10, throttle part 11 and heat exchanger 12, heat exchanger 12 have been arranged in parallel two, every in connection
Magnetic valve 13 is provided with the refrigerant pipe branch road of individual heat exchanger 12, two magnetic valves 13 are controlled by solenoid valve controller, two
Heat exchanger 12 is respectively wound around the outside wall surface of two water tanks 3, and during practical application, heat exchanger 12 can also be placed on the interior of water tank 3
Portion, the break-make of refrigerant pipe branch road is controlled by magnetic valve 13, and the break-make of refrigerant pipe branch road determines the heat exchange on the refrigerant pipe branch road
Whether device 12 is worked, i.e., whether the heat exchanger 12 on the refrigerant pipe branch road is heated to the water tank 3 that is wound, and compressor 7 is set
Put the right-hand end inside shell 1, before evaporator 9 is arranged on inside shell 1, inside the shell 1 before also set up
There is a cross flow fan 14, evaporator 9 and cross flow fan 14 are parallel to each other and set along the axis direction of shell 1, and evaporator 9 and pass through
Flow fan 14 is corresponding formed with the flowing wind direction with cross flow fan 14 on shell 1 before two intervals of water tank 3
Air inlet 15 and air outlet 16, the flowing wind direction of cross flow fan 14 is upper entering and lower leaving in the present embodiment, certainly, during practical application
Bottom in and top out can be selected, the air inlet/outlet mode of manufacture Teat pump boiler can be selected according to installation environment.
The present embodiment is provided with water solenoid valve 17 on the water pipe 4 for connecting two water tanks 3, and water solenoid valve 17 passes through electricity
Magnetic valve controller is controlled, and when outlet pipe 5 is closed, solenoid valve controller control water solenoid valve 17 is closed, and makes two
Water in water tank 3 is in not circulation status, when outlet pipe 5 is in open mode, solenoid valve controller control water solenoid valve 17
Open, the water in two water tanks 3 is in circulation status.
Heat exchanger 12 in the present embodiment is micro-channel heat exchanger, and micro-channel heat exchanger is wrapped in the outside wall surface of water tank 3, carried
The heat exchange efficiency and service life of high heat exchanger.
Evaporator 9 in the present embodiment is made up of three pieces of flat type evaporators, and positioned at the air inlet of cross flow fan 14
Side, in practical application, evaporator 9 can also select c-type or L-type evaporator, c-type or L-type evaporator inleakage are small, heat exchange
Efficiency high, makes full use of overall structure space, and the evaporator 9 in the present embodiment is the tubular evaparator that metallic aluminum material makes,
In practical application, the tubular evaparator or micro-channel evaporator that metallic aluminium or metallic copper material make can also be selected, effectively
Mitigate the weight of evaporator, further improve the heat transfer effect and operating efficiency of evaporator, efficient energy-saving.
Compressor 7 in the present embodiment is vertical compressor, during practical application, when compressor is arranged on inside shell 1
Above then select horizontal compressor, realize it is compact-sized, reduce volume, make full use of overall structure space.
Cross flow fan 14 in the present embodiment is provided with one, and cross flow fan 14 includes Dual-output shaft motor and is arranged on double
Export spindle motor both ends and export two through-flow fan blades of axis connection, Dual-output shaft motor with two of Dual-output shaft motor respectively
Drive two through-flow fan blades to rotate, be effectively increased air quantity and its mobility, and the Dual-output shaft motor in the present embodiment is lose-lose
Shaft DC brushless motor, effective noise reduction function, and working condition is adjustable, realizes the multi gear switching of cross flow fan discharge quantity of fan,
During practical application, multiple cross flow fans can also be arranged as required to.
The right-hand end of water tank 3 above connects with outlet pipe 5 in the present embodiment, the bottom of underlying water tank 3
Portion connects with water inlet pipe 6, and water inlet pipe 6 and outlet pipe 5 extend respectively to the bottom outside of shell 1, are easy to more cisten mechanism wall hangings
Formula Teat pump boiler is connected with exterior line.
In the present embodiment, user-friendly electric-control board is arranged in its right end face of shell 1, certainly, actual to answer
Used time, it can also be arranged in the left end face of shell 1 or before shell 1.
Fig. 3 is the utility model heat pump main frame principle schematic, and with reference to figure 3, the operation principle of the present embodiment is as follows：
When water consumption is few, solenoid valve controller control magnetic valve 1 is opened, and magnetic valve 2 132 is closed, and now, is changed
The hot heating water tank 1 of device 1, heating water tank 2 32, the water inside water tank 1 do not reach setting to heat exchanger 2 122
Heat exchanger 1 stops heating after temperature, and user can use the water for having reached design temperature in water tank 1, when water tank one
Reached in 31 design temperature water it is not enough when, solenoid valve controller control magnetic valve 1 close, magnetic valve 2 132
Open, now, not heating water tank 1 of heat exchanger 1, the heating water tank 2 32 of heat exchanger 2 122, be heated in water tank 2 32
Water be used for the water consumption that consumes in subsidiary water tank 1.
When water consumption is more, solenoid valve controller control magnetic valve 1 is opened, and magnetic valve 2 132 is closed, and now, is changed
The hot heating water tank 1 of device 1, heating water tank 2 32, the water inside water tank 1 do not reach setting to heat exchanger 2 122
Heat exchanger 1 stops heating after temperature, and then solenoid valve controller control magnetic valve 1 is closed, magnetic valve 2 132 dozens
Open, now, not heating water tank 1 of heat exchanger 1, the heating water tank 2 32 of heat exchanger 2 122, until the inside of water tank 2 32
Heat exchanger 2 122 stops heating after water reaches design temperature, and user, which begins to use in two water tanks, has reached design temperature
Water, when the water for reaching design temperature is not enough, solenoid valve controller control magnetic valve 1 is closed, magnetic valve 2 132 dozens
Open, now, not heating water tank 1 of heat exchanger 1, the heating water tank 2 32 of heat exchanger 2 122, be heated in water tank 2 32
Water is used in subsidiary water tank 1 water consumption consumed.
For the present embodiment when water outlet pipe part is in open mode, i.e. user is when with water, solenoid valve controller Synchronization Control water
Pipe magnetic valve is opened, and the water in two water tanks is in circulation status；When outlet pipe is closed, i.e. the unused water of user
When, solenoid valve controller control water solenoid valve is closed, and the water in two water tanks is in not circulation status；The present embodiment can be with
Selective heating is carried out to the water in water tank according to water consumption, relative to traditional single water tank, is not required to when water consumption is few
Water in whole water tank is all heated, water in water tank can be heated in batches when water consumption is more, therefore this
Embodiment relative to traditional single water tank Teat pump boiler is more energy efficient, firing rate faster.
For water solenoid valve in the present embodiment in practical application, check valve can also be selected, check valve can allow water
Flowed from water tank two into water tank one, without allowing water to be flowed from water tank one into water tank two, effectively avoid the water in water tank one
Generation adverse current or backflow.
Two water tank rotation heating in the present embodiment, the thermal efficiency is higher, more energy efficient, and water tank capacity can be according to installation environment
Appropriate increase, water tank, compressor, the arrangement of evaporator and cross flow fan, takes full advantage of integrally-built space, reduces body
Product, mitigate weight, be easily installed the arrangement of use and later stage repair and maintenance, wherein evaporator and cross flow fan, be effectively increased
Heat exchange area, the scope of air circulation is increased, improve the operating efficiency of Teat pump boiler, and direct current in cross flow fan
Brushless electric machine effectively reduces noise, improves the comfortableness of people's living environment.
The utility model can also be implemented in practical application by embodiments described below：
A kind of new more cisten mechanism wall hanging type heat pump water heaters, including heat pump main frame inside the housing and water are set
Case, water tank inside the housing behind transverse horizontal be provided with multiple, rear shell vertical plane of multiple water tanks along shell is equidistant up and down
From spread configuration, multiple water tanks are by water pipe serial communication, wherein the water tank positioned at series connection head end connects with water inlet pipe, positioned at string
The water tank of connection end connects with outlet pipe, and in the outer surface of water tank covered with foaming layer, heat pump main frame includes connecting by refrigerant pipe
Lead into compressor, four-way valve, evaporator, reservoir, throttle part and the heat exchanger of a circulation loop, heat exchanger parallel connection is set
It is equipped with multiple, multiple heat exchangers are identical with multiple water tank quantity, and electricity is provided with the refrigerant pipe branch road for connecting each heat exchanger
Magnet valve, multiple magnetic valves are controlled by solenoid valve controller, and multiple heat exchangers are respectively wound around the outside wall surface of multiple water tanks or put
Put inside water tank, by the break-make of solenoid valve control refrigerant pipe branch road, the break-make of refrigerant pipe branch road is determined on the refrigerant pipe branch road
Heat exchanger whether work, i.e., whether the heat exchanger on the refrigerant pipe branch road is heated to the water tank that is wound, and compressor is set
Put before wherein one end or enclosure inside the housing, evaporator is set before inside the housing, inside the housing
Before be additionally provided with cross flow fan, evaporator and cross flow fan are parallel to each other and set along the axis direction of shell, and evaporate
Device and cross flow fan are located at the centre before enclosure, formed with the corresponding air intake of flowing wind direction with cross flow fan on shell
Mouth and air outlet；Water solenoid valve or check valve, water pipe electromagnetism are provided with the water pipe for being used to connect between water tank and water tank
Valve is controlled by solenoid valve controller, and when outlet pipe is closed, solenoid valve controller control water solenoid valve is closed, and is made
Water tank is in not circulation status with the water in water tank, when water outlet pipe part is in open mode, solenoid valve controller control water pipe electromagnetism
Valve is opened, and water tank is in circulation status with the water in water tank, check valve can allow the water in multiple water tanks to be connected by water tank
The regulation flow direction flowing of order, prevents adverse current.
Multiple water tanks described in the present embodiment can be three water tanks, four water tanks, five water tanks or other quantity
Water tank.
Described above is only the preferred embodiment of the utility model patent, it is noted that for the general of the art
For logical technical staff, on the premise of the utility model patent principle is not departed from, some improvements and modifications can also be made, this
A little improvements and modifications also should be regarded as the protection domain of the utility model patent.
Claims (10)
1. a kind of new more cisten mechanism wall hanging type heat pump water heaters, including heat pump main frame inside the housing and water tank are set,
It is characterized in that：The water tank inside the housing behind transverse horizontal be provided with multiple, the multiple water tank is along after shell
Shell vertical plane is spaced substantially equidistant setting up and down, and the multiple water tank is by water pipe serial communication, wherein the water positioned at series connection head end
Case connects with water inlet pipe, and the water tank positioned at series connection end connects with outlet pipe, described in the outer surface of water tank covered with foaming layer
Heat pump main frame includes connecting into the compressor of a circulation loop, four-way valve, evaporator, reservoir, restriction by refrigerant pipe
Part and heat exchanger, the heat exchanger have been arranged in parallel multiple, and the multiple heat exchanger is identical with multiple water tank quantity, is connecting
Magnetic valve is provided with the refrigerant pipe branch road of each heat exchanger, multiple magnetic valves are controlled by solenoid valve controller, the multiple
Heat exchanger is respectively wound around the outside wall surface of multiple water tanks or placed inside water tank, and the compressor is arranged on the enclosure
Wherein before one end or enclosure, the evaporator is set before inside the housing, inside the housing before also set
Cross flow fan is equipped with, the evaporator and cross flow fan are parallel to each other and set along the axis direction of shell, and the evaporator
It is located at the centre before enclosure with cross flow fan, it is corresponding formed with the flowing wind direction with the cross flow fan on the shell
Air inlet and air outlet.
2. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 1, it is characterised in that in water tank
Water solenoid valve or check valve are provided with the water pipe for being used to connect between water tank, the water solenoid valve passes through described electricity
Magnetic valve controller controls.
3. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 1, it is characterised in that described
Heat exchanger is micro-channel heat exchanger, and the micro-channel heat exchanger is wrapped in the outside wall surface of water tank.
4. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 1, it is characterised in that described
Evaporator is flat type, c-type or L-type evaporator, and the flat type, c-type or L-type evaporator are located at the air inlet one of cross flow fan
Side.
A kind of 5. new more cisten mechanism wall hanging type heat pump water heaters according to claim 1 or 4, it is characterised in that institute
The evaporator stated is the tubular evaparator or micro-channel evaporator that metallic aluminium or metallic copper material make.
6. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 1, it is characterised in that described
Compressor is horizontal compressor or vertical compressor.
7. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 1, it is characterised in that described
Cross flow fan, which is provided with multiple, described cross flow fans, to be included Dual-output shaft motor and is arranged on Dual-output shaft motor both ends and divides
Two through-flow fan blades of axis connection are not exported with two of Dual-output shaft motor.
8. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 7, it is characterised in that described
Dual-output shaft motor is double output shaft DC brushless motor.
9. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 1, it is characterised in that described to pass through
The flowing wind direction of flow fan is bottom in and top out or upper entering and lower leaving.
10. the new more cisten mechanism wall hanging type heat pump water heaters of one kind according to claim 1, it is characterised in that described
Water inlet pipe and outlet pipe extend respectively to the bottom outside of shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720405321.9U CN206944474U (en) | 2017-04-18 | 2017-04-18 | A kind of new more cisten mechanism wall hanging type heat pump water heaters |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720405321.9U CN206944474U (en) | 2017-04-18 | 2017-04-18 | A kind of new more cisten mechanism wall hanging type heat pump water heaters |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954794A (en) * | 2018-08-31 | 2018-12-07 | 四川长虹空调有限公司 | A kind of Air-Conditioning Straflo Fan heat-exchanging component |
| CN109237784A (en) * | 2018-08-17 | 2019-01-18 | 佛山市澳霆环境设备制造有限公司 | A kind of energy conservation swimming pool heat pump system |
| CN109724248A (en) * | 2019-03-06 | 2019-05-07 | 合肥美的暖通设备有限公司 | Water heater |
-
2017
- 2017-04-18 CN CN201720405321.9U patent/CN206944474U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237784A (en) * | 2018-08-17 | 2019-01-18 | 佛山市澳霆环境设备制造有限公司 | A kind of energy conservation swimming pool heat pump system |
| CN109237784B (en) * | 2018-08-17 | 2021-03-26 | 佛山市澳霆环境设备制造有限公司 | Energy-conserving swimming pool heat pump system |
| CN108954794A (en) * | 2018-08-31 | 2018-12-07 | 四川长虹空调有限公司 | A kind of Air-Conditioning Straflo Fan heat-exchanging component |
| CN108954794B (en) * | 2018-08-31 | 2023-11-10 | 四川长虹空调有限公司 | Heat exchange assembly of air conditioner cross-flow fan |
| CN109724248A (en) * | 2019-03-06 | 2019-05-07 | 合肥美的暖通设备有限公司 | Water heater |
| CN109724248B (en) * | 2019-03-06 | 2023-12-26 | 合肥美的暖通设备有限公司 | water heater |
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