CN203052983U - Instant-heat type air energy heat pump water heater - Google Patents
Instant-heat type air energy heat pump water heater Download PDFInfo
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- CN203052983U CN203052983U CN 201220723636 CN201220723636U CN203052983U CN 203052983 U CN203052983 U CN 203052983U CN 201220723636 CN201220723636 CN 201220723636 CN 201220723636 U CN201220723636 U CN 201220723636U CN 203052983 U CN203052983 U CN 203052983U
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Abstract
The utility model discloses an instant-heat type air energy heat pump water heater which comprises a first heat pump cycle loop, a second heat pump cycle loop, a water path pipeline part module, an electric heating module and a control module. Compressors and condensers are respectively arranged in the two heat pump cycle loops. The water path pipeline part module comprises a water inlet pipeline, a heat pump heating pipeline and a water outlet pipeline which are sequentially communicated. Water flow adjusting valves are arranged in the communicated pipelines, the electric heating module is positioned on the water outlet pipeline, the condensers in the heat pump cycle loops and the heat pump heating pipeline are integrated in a plate-type heat exchanger or a sleeve type heat exchanger, and the control module can control work states of the two compressors, a second compressor, the electric heating module and the water flow adjusting valve. The instant-heat type air energy heat pump water heater removes a water tank, can be used when being turned on, guarantees constant-temperature outlet water, is simple in structure and can improve running stability and running reliability of a heat pump machine set.
Description
Technical field
The utility model relates to the Teat pump boiler field, relates in particular to a kind of Instant heating type air energy heat pump water heater.
Background technology
Traditional air energy heat pump water heater generally is made up of two parts, and the one, host machine part is the water tank part in addition; For the domestic type water tank, 1, capacity is generally at 150-320L, water tank is bulky, need occupy construction area greatly during installation, even the water tank that has uses support to be installed on outside the wall, because water tank itself adds the weight of water, this type of mounting means is quite dangerous.2, the material and the technology that adopt of inner water tank itself, no matter be stainless steel inner container or enamel inner container, because the defective of manufacturing process, radiator leak is difficult to avoid; 3, the heat exchanger of water tank inside generally adopts copper pipe or stainless steel tube, and in the relatively poor area of water quality, heat exchanger tube can be corroded and bore a hole, and causes coolant leakage, in case leak, will be fatefulue for unit; 4, need tube connector to link to each other between main frame and the water tank, the artificial coolant leakage phenomenon that produces when being difficult to avoid installing like this; 5, because the characteristic of storage-type heat pump need water temperature is risen to higher temperature, and required time is longer, can not satisfy instant water requirement, and to the water later stage, fluctuating temperature is bigger the comfortableness that influence is used; In addition, the height of condensation temperature determines the energy consumption of unit, and the unit of tradition band water tank moves under high condensation temperature and high condensing pressure for a long time, to life-span of compressor will be a very big test; 6, adopting the water tank of storage-type, generally all need during water to mix water, several problems, 1 can occur like this) the hot water utilization rate of water tank the inside is not high; 2) water tank is in insulating process, and descending inevitably appears in water temperature, increases energy consumption; When 3) user's house ornamentation is used water valve, must need to install mixed water valve, increase material cost.
The utility model content
At defective and the deficiency that above-mentioned technology exists, the utility model proposes a kind of plug and play formula Tempeerature-constant air energy Teat pump boiler, thereby overcome above technological deficiency, improve the comfort level of water and the service life of unit greatly.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of Instant heating type air energy heat pump water heater is provided, comprises the first heat pump cycle loop, the second heat pump cycle loop, water route pipeline fitting module, electrical heating module and control module; Have first compressor and first condenser in the described first heat pump cycle loop; Have second compressor and second condenser in the described second heat pump cycle loop; Described water route pipeline fitting module comprises inlet pipeline, heat pump pipeline, the outlet pipeline that is communicated with successively; In the pipeline of above-mentioned connection, be provided with Water flow adjusting valve; Described electrical heating module is arranged on the described outlet pipeline; Described first condenser, second condenser and described heat pump pipeline are integrated in a plate type heat exchanger or the double pipe heat exchanger; Refrigerant in water in the described heat pump pipeline and described first condenser and/or second condenser carries out heat exchange; Described control module is connected with described first compressor, second compressor, electrical heating module, Water flow adjusting valve, be used for carrying out synthetic determination according to design temperature, inflow temperature, environment temperature and leaving water temperature, control the duty of described two compressors, electrical heating module and Water flow adjusting valve.
Wherein, also respectively be connected with the release branch road in the described first heat pump cycle loop and the second heat pump cycle loop, described release branch road comprises release condenser and the release throttling arrangement that connects successively, the import of described release condenser is connected to the exhaust outlet of described the first/the second compressor by a magnetic valve, the outlet of described release throttling arrangement connects the evaporator in described the first/the second heat pump cycle loop, described magnetic valve is controlled by described control module, is used for ending or the described release branch road of conducting.
Wherein, also be provided with an electronic mixed water valve on the described outlet pipeline, described inlet pipeline is provided with a bypass pipe road and is connected to described electronic mixed water valve, and described electronic mixed water valve is controlled by described control module.
Wherein, also be connected with the defrosting branch road in the described first heat pump cycle loop and/or the second heat pump cycle loop, described defrosting branch road comprises the defrosting throttling arrangement, the import of described defrosting throttling arrangement connects the exhaust outlet of described the first/the second compressor by a magnetic valve, the outlet of defrosting throttling arrangement connects the evaporator in described the first/the second heat pump cycle loop, described magnetic valve is controlled by described control module, is used for ending or the described defrosting branch road of conducting.
The beneficial effects of the utility model are: with respect to existing Teat pump boiler, the advantage of employing the utility model scheme is: 1, adopt the water tank free design, save installing space, easy for installation and use safety; 2, stop the phenomenon that water tank leaks; 3, avoid the perforation that is corroded of coil pipe in the water tank, cause the risk that unit is scrapped; 4, owing to reduced the link of using tube connector, greatly reduce the probability of coolant leakage; 5, the designed unit of this programme can be accomplished plug and play, saves the time of waiting for water, guarantees constant-temperature effluent, improves the comfortableness of water, and can guarantee the continuation of water; Unit is under this water situation, and efficiency is higher, and is more energy-conservation, and be conducive to source pump and safely and steadily run, thus the service life of guarantee unit; 6, owing to adopt no water tank design, the low problem of hot water utilization rate can not occur, more can not occur causing the problem of energy waste because heat insulation effect is not good, can reduce the use cost of user's valve class in addition.In addition, in this water heater, heat pump part and electrical heating partly be that independence is controlled, when one of them breaks down, and so long as not the common signal fault, all can isolated operation, thus satisfy unit at the water demand that occurs under the situation of partial fault.Heat pump has partly adopted independently heat pump circulating system of double-compressor formation two, in use, carry out different compressor combination according to demand, or separate unit operation or operation simultaneously, water inlet is carried out heat exchange with different condenser combinations, and the satisfied temperature demand does not need the electrical heating module to operate at full capacity as far as possible, embody energy-saving effect, and can solve the use under low temperature environment low temperature flooded condition.When a compressor was shut down or broken down, other one can be continued to use, thereby guarantee the water requirement.
Description of drawings
Fig. 1 is the structural representation of the utility model first embodiment;
Fig. 2 is the structural representation of electrical heating module among the utility model first embodiment;
Fig. 3 is the structural representation of the utility model second embodiment.
Label declaration:
1, first compressor; 2, magnetic valve; 3, heat exchanger; 4, electronic mixed water valve; 5, water ga(u)ge; 6, Water flow adjusting valve; 7, electrical heating module; 71, heating unit assembly outlet pipe; 72, heating unit assembly; 73, temperature controller; 74, casing; 75, temperature controller; 76, terminal board; 77, silicon controlled component; 78, heating unit assembly water inlet pipe; 8, water flow switch; 9, gas-liquid separator; 10, filter; 11, expansion valve; 12, magnetic valve; 13, defrosting capillary; 14, motor; 15, fan blade; 16, the first release capillary; 17, the second release capillary; 18, capillary; 19, filter; 20, second evaporimeter; 21, the second release condenser; 22, first evaporimeter; 23, the first release condenser; 24, second compressor; 25, magnetic valve; 26, magnetic valve; 27, magnetic valve.
The specific embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1, in the present embodiment, first compressor 1, heat exchanger 3, expansion valve 11, first evaporimeter 22 constitute the main body in the first heat pump cycle loop, as accessory, also be provided with filter 10 before the expansion valve 11 to filter the impurity in the refrigerant, prevent from stopping up expansion valve 11, before first compressor, 1 air entry, also be provided with independently gas-liquid separator 9 in addition, prevent that compressor from sucking liquid refrigerants and producing " liquid hammer " phenomenon.Second compressor 24, heat exchanger 3, capillary 18, second evaporimeter 20 constitute the main body in the second heat pump cycle loop, similarly, for preventing that capillary 18 from stopping up, before capillary 18, also be provided with filter 19, this second compressor 24 itself has the gas-liquid separation part, therefore, independent gas-liquid separator additionally is not set again in the second heat pump cycle loop.
During operate as normal, the flow passage of refrigerant is: compressor (refrigerant is compressed) → condenser (extraneous fluid is heated in the refrigerant heat release) → throttling arrangement (expansion valve or capillary are to the refrigerant decrease temperature and pressure) → evaporimeter (refrigerant absorbs heat from extraneous fluid) → compressor.
For the first heat pump cycle loop and the second heat pump cycle loop, the refrigerant of its vaporizer side and outside air carry out heat exchange, relatively be provided with motor 14 and fan blade 15 with first, second evaporimeter 22,20, drive fan blade 15 rotations and make Forced Air Convection pass evaporimeter and refrigerant heat exchange by motor 14.The refrigerant of condenser side and water carry out heat exchange, and cold water heating back is discharged for using.
Particularly, water route pipeline fitting module comprises inlet pipeline, heat pump pipeline and the outlet pipeline that is communicated with successively, and wherein, the heat pump pipeline is arranged in heat exchanger 3.Heat exchanger 3 is plate type heat exchanger or double pipe heat exchanger, be provided with two fluid passages that can carry out heat exchange mutually in it, the heat pump pipeline of a fluid channel setting for supply water flowing wherein, an other fluid path be divided into again two independently path distribute to the first heat pump cycle loop and the second heat pump cycle loop respectively as condenser.When normal the use, water is entered in the heat exchanger 3 by inlet pipeline like this, by after the refrigerant heating again from discharging for use (shown in the direction of arrow among Fig. 1) the outlet pipeline.Because plate type heat exchanger and double pipe heat exchanger have compact conformation, heat exchange efficiency height, discharge can satisfy user demand, and by the systematic parameter in heat pump cycle loop rationally is set, can make water temperature reach user demand.
Inlet pipeline is provided with water flow switch 8, also can be simultaneously as the master switch of water heater, in order to start or to close water heater.Also be provided with water ga(u)ge 5 and Water flow adjusting valve 6 on the outlet pipeline, in order to metering and adjusting discharge.
Also be provided with electrical heating module 7 on the outlet pipeline, consult Fig. 2, electrical heating module 7 comprises heating unit assembly 72, the heating unit assembly water inlet pipe 78 and the heating unit assembly outlet pipe 71 that connect heating unit assembly 72 imports and outlet respectively, be arranged at the temperature controller 73,75 on heating unit assembly 72 exits and the housing respectively, be arranged at the silicon controlled component 77 at heating unit assembly water inlet pipe 78 places, above-mentioned each assembly places in the casing 74, and casing 74 is provided with terminal board 76.Heating unit assembly water inlet pipe 78 and heating unit assembly outlet pipe 71 are serially connected with in the outlet pipeline.
First compressor 1, second compressor 24, electrical heating module 7, Water flow adjusting valve 6, electronic mixed water valve 4 all are electrically connected control module by the unified control of control module.
During use: control module is determined to open first compressor or second compressor, or is opened two compressors simultaneously according to detected inflow temperature and environment temperature synthetic determination;
Detect the leaving water temperature after compressor is opened, judge whether to reach design temperature, if leaving water temperature can reach design temperature, then do not start the electrical heating module; If leaving water temperature can not reach design temperature, control module is judged needed electrical heating power according to the Inlet and outlet water temperature difference and flow, the required electrical heating power of control controllable silicon output;
When compressor and electrical heating module are total power output and leaving water temperature and also do not reach design temperature, judge that according to detected temperature the control Water flow adjusting valve is regulated discharge, guarantees that leaving water temperature remains on design temperature.
More than, by the control to two compressors, electrical heating module and Water flow adjusting valve duty, can guarantee the comfortableness of water, improve stability and the reliability of source pump operation.With respect to existing Teat pump boiler, the advantage of employing such scheme is: 1, adopt the water tank free design, save installing space, easy for installation and use safety; 2, stop the phenomenon that water tank leaks; 3, avoid the perforation that is corroded of coil pipe in the water tank, cause the risk that unit is scrapped; 4, owing to reduced the link of using tube connector, greatly reduce the probability of coolant leakage; 5, the designed unit of this programme can be accomplished plug and play, saves the time of waiting for water, guarantees constant-temperature effluent, improves the comfortableness of water, and can guarantee the persistence of water; Unit is under this water situation, and efficiency is higher, and is more energy-conservation, and be conducive to source pump and safely and steadily run, thus the service life of guarantee unit; 6, owing to adopt no water tank design, the low problem of hot water utilization rate can not occur, more can not occur causing the problem of energy waste because heat insulation effect is not good, can reduce the use cost of user's valve class in addition.In addition, in this water heater, heat pump part and electrical heating partly be that independence is controlled, when one of them breaks down, and so long as not the common signal fault, all can isolated operation, thus satisfy unit at the water demand that occurs under the situation of partial fault.Heat pump has partly adopted independently heat pump circulating system of double-compressor formation two, in use, carry out different compressor combination according to demand, or separate unit operation or operation simultaneously, water inlet is carried out heat exchange with different condenser combinations, and the satisfied temperature demand does not need the electrical heating module to operate at full capacity as far as possible, embody energy-saving effect, and can solve the use under low temperature environment low temperature flooded condition.When a compressor was shut down or broken down, other one can be continued to use, thereby guarantee the water requirement.
During actual the use, water heater may occur in the user family such as the bigger situation of current fluctuations, if during by above-mentioned normal use, overheating problem might occur, for guaranteeing still to keep the constant of water outlet in these cases, present embodiment has also been taked corresponding counter-measure.
In the first heat pump cycle loop, be provided with the first release branch road that is constituted by magnetic valve 26, the first release condenser 23 and the first release throttle capillary tube 16 between the import of first compressor, 1 exhaust outlet and first evaporimeter 22, between first compressor, 1 exhaust outlet and heat exchanger 3 imports, be provided with magnetic valve 2; During normal the use, magnetic valve 2 is in conducting state, and magnetic valve 26 ends, and 1 exhaust of first compressor normally enters 3 pairs of water heating of heat exchanger.
Equally, in the second heat pump cycle loop, be provided with the second release branch road that is constituted by magnetic valve 27, the second release condenser 21 and the second release throttle capillary tube 17 between second compressor, 24 exhaust outlets and 20 imports of second evaporimeter, between second compressor, 24 exhaust outlets and heat exchanger 3 imports, be provided with magnetic valve 25; During normal the use, magnetic valve 25 is in conducting state, and magnetic valve 27 ends, and 24 exhausts of second compressor normally enter 3 pairs of water heating of heat exchanger.
If after correct selection compressor combination, leaving water temperature exceeds design temperature, then control magnetic valve 26(and/or magnetic valve 27) conducting, make the first compressor 1(and/or second compressor 24) exhaust can be through the first release condenser 23(and/or the second release condenser 21) with outside air heat exchange condensation after, through the first release capillary 16(and/or the second release capillary 17) after enter the first evaporimeter 22(and/or second evaporimeter 20).In this stress-relief process, magnetic valve 2(and/or magnetic valve 25) keep conducting as required or switch to ending, because part even whole refrigerant all enter the release branch road, the coolant quantity of heat exchanger 3 of flowing through like this can reduce even not have fully, therefore water enters the heat minimizing that heat exchanger 3 backs obtain from the heat pump cycle loop, when leaving water temperature was lower than design temperature, the needed electrical heating power of control electrical heating module 7 outputs was guaranteed the constant of leaving water temperature.
By design release branch road, when avoiding leaving water temperature too high, also be conducive to alleviate the operating load of compressor, thereby reduce the unit energy consumption like this, meet the requirement of national energy-saving and emission-reduction.
Except the measure that the release branch road is set, in the present embodiment also outlet pipeline be provided with electronic mixed water valve 4, electronic mixed water valve 4 is a kind of three-port structure, inlet pipeline is provided with a bypass pipe road and is connected to this electronic mixed water valve 4, makes that like this cold water in the inlet pipeline can directly be entered in the outlet pipeline by bypass line.When after correct selection compressor combination, when leaving water temperature exceeds design temperature, can also adopt the electronic mixed water valve 4 of control to open bypass line, make the water in the inlet pipeline directly enter outlet pipeline, regulate the ratio of heat pump water outlet and cold water, reach the purpose of limit temperature.Control the purpose that electronic mixed water valve and control release branch road two kinds of measures all can reach the limit temperature, actually can take wherein a kind of measure or two kinds of measures to adopt simultaneously separately.When being provided with this electronic mixed water valve in the unit, under normal operating condition if when detecting the power of exporting and can satisfying bigger water inlet and require, also can control electronic mixed water valve and carry out the mixed water of bypass, the application of big yield is provided.
When preventing that winter from using because outdoor temperature is low excessively, frosting influences the heat pump use on the evaporimeter, in the first heat pump cycle loop, be connected with the defrosting branch road that is constituted by magnetic valve 12 and defrosting capillary 13 between the exhaust outlet of first compressor 1 and 22 imports of first evaporimeter.On detecting evaporimeter during frosting, control magnetic valve 12 is opened, and 1 exhaust of first compressor is entered in first evaporimeter 22, because 1 exhaust of first compressor is without condensation process through defrosting capillary 13, it still has higher relatively temperature through after the throttling, and the frost on the evaporimeter is melted away.The defrosting branch road also can be connected in the second heat pump cycle loop or all arrange in two heat pump cycle loops, and specifically situation is verified the evaporimeter of easy frosting and the specific aim setting by experiment.
Consult Fig. 3, second embodiment of the present utility model is similar to a last example structure, and difference only is not arrange electronic mixed water valve, except the corresponding control of having lacked electronic mixed water valve, other courses of work and principle are all identical with first embodiment, repeat no more herein.
In above-described embodiment, all adopt two compressors to constitute independently heat pump cycle, can also adopt more compressor in theory, but increase compressor and need increase pipeline fitting, heat exchanger components adaptively, therefore the corresponding volume that increases water heater, should rationally arrange as required.Compressor can be invariable frequency compressor, also can be frequency-changeable compressor, and control module is then done corresponding control design according to different compressors.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (4)
1. an Instant heating type air energy heat pump water heater is characterized in that, comprises the first heat pump cycle loop, the second heat pump cycle loop, water route pipeline fitting module, electrical heating module and control module;
Have first compressor and first condenser in the described first heat pump cycle loop; Have second compressor and second condenser in the described second heat pump cycle loop;
Described water route pipeline fitting module comprises inlet pipeline, heat pump pipeline, the outlet pipeline that is communicated with successively; In the pipeline of above-mentioned connection, be provided with Water flow adjusting valve;
Described electrical heating module is arranged on the described outlet pipeline;
Described first condenser, second condenser and described heat pump pipeline are integrated in a plate type heat exchanger or the double pipe heat exchanger; Refrigerant in water in the described heat pump pipeline and described first condenser and/or second condenser carries out heat exchange;
Described control module is connected with described first compressor, second compressor, electrical heating module, Water flow adjusting valve, be used for carrying out synthetic determination according to design temperature, inflow temperature, environment temperature and leaving water temperature, control the duty of described two compressors, electrical heating module and Water flow adjusting valve.
2. Instant heating type air energy heat pump water heater according to claim 1, it is characterized in that: also respectively be connected with the release branch road in the described first heat pump cycle loop and the second heat pump cycle loop, described release branch road comprises release condenser and the release throttling arrangement that connects successively, the import of described release condenser is connected to the exhaust outlet of described the first/the second compressor by a magnetic valve, the outlet of described release throttling arrangement connects the evaporator in described the first/the second heat pump cycle loop, described magnetic valve is controlled by described control module, is used for ending or the described release branch road of conducting.
3. Instant heating type air energy heat pump water heater according to claim 1, it is characterized in that: also be provided with an electronic mixed water valve on the described outlet pipeline, described inlet pipeline is provided with a bypass pipe road and is connected to described electronic mixed water valve, and described electronic mixed water valve is controlled by described control module.
4. according to each described Instant heating type air energy heat pump water heater of claim 1-3, it is characterized in that: also be connected with the defrosting branch road in the described first heat pump cycle loop and/or the second heat pump cycle loop, described defrosting branch road comprises the defrosting throttling arrangement, the import of described defrosting throttling arrangement connects the exhaust outlet of described the first/the second compressor by a magnetic valve, the outlet of defrosting throttling arrangement connects the evaporator in described the first/the second heat pump cycle loop, described magnetic valve is controlled by described control module, is used for ending or the described defrosting branch road of conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723636 CN203052983U (en) | 2012-12-25 | 2012-12-25 | Instant-heat type air energy heat pump water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723636 CN203052983U (en) | 2012-12-25 | 2012-12-25 | Instant-heat type air energy heat pump water heater |
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| CN203052983U true CN203052983U (en) | 2013-07-10 |
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| CN 201220723636 Expired - Fee Related CN203052983U (en) | 2012-12-25 | 2012-12-25 | Instant-heat type air energy heat pump water heater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103411308A (en) * | 2013-07-26 | 2013-11-27 | 广东美的暖通设备有限公司 | Heat insulation control method and device for heat pump water heater and heat pump water heater |
| CN103727677A (en) * | 2014-01-02 | 2014-04-16 | 福州斯狄渢电热水器有限公司 | Instant heating type water heater constant temperature control system and method |
| CN103759406A (en) * | 2014-01-24 | 2014-04-30 | 陈国良 | Single-tank, double-pipe and bidirectional electric heating device and air energy instant electric water heater |
| CN103900249A (en) * | 2012-12-25 | 2014-07-02 | 福州斯狄渢电热水器有限公司 | Instant air energy heat-pump water heater and control method thereof |
| CN104048407A (en) * | 2014-06-24 | 2014-09-17 | 马鞍山纽泽科技服务有限公司 | Air energy heat pump water heater |
| CN107084560A (en) * | 2016-02-16 | 2017-08-22 | 青岛海尔新能源电器有限公司 | Heat-pump water heater and its Defrost method |
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2012
- 2012-12-25 CN CN 201220723636 patent/CN203052983U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103900249A (en) * | 2012-12-25 | 2014-07-02 | 福州斯狄渢电热水器有限公司 | Instant air energy heat-pump water heater and control method thereof |
| CN103900249B (en) * | 2012-12-25 | 2017-08-11 | 福州斯狄渢电热水器有限公司 | Instant heating type air energy heat pump water heater and its control method |
| CN103411308A (en) * | 2013-07-26 | 2013-11-27 | 广东美的暖通设备有限公司 | Heat insulation control method and device for heat pump water heater and heat pump water heater |
| CN103411308B (en) * | 2013-07-26 | 2016-03-02 | 广东美的暖通设备有限公司 | The thermal-insulation control method of Teat pump boiler and device and Teat pump boiler |
| CN103727677A (en) * | 2014-01-02 | 2014-04-16 | 福州斯狄渢电热水器有限公司 | Instant heating type water heater constant temperature control system and method |
| CN103727677B (en) * | 2014-01-02 | 2016-06-15 | 福州斯狄渢电热水器有限公司 | A kind of control method of immediately heating water heater thermostatic control system |
| CN103759406A (en) * | 2014-01-24 | 2014-04-30 | 陈国良 | Single-tank, double-pipe and bidirectional electric heating device and air energy instant electric water heater |
| CN103759406B (en) * | 2014-01-24 | 2016-08-31 | 陈国良 | Single two-way electric heater unit of tank double-pipe body and air energy immediately heating water heater |
| CN104048407A (en) * | 2014-06-24 | 2014-09-17 | 马鞍山纽泽科技服务有限公司 | Air energy heat pump water heater |
| CN104048407B (en) * | 2014-06-24 | 2017-02-08 | 广东纽恩泰新能源科技发展有限公司 | Air energy heat pump water heater |
| CN107084560A (en) * | 2016-02-16 | 2017-08-22 | 青岛海尔新能源电器有限公司 | Heat-pump water heater and its Defrost method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20181225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |