CN103900139A - Air energy heat pump heat supply and heating system with water tank inside - Google Patents
Air energy heat pump heat supply and heating system with water tank inside Download PDFInfo
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- CN103900139A CN103900139A CN201210574799.6A CN201210574799A CN103900139A CN 103900139 A CN103900139 A CN 103900139A CN 201210574799 A CN201210574799 A CN 201210574799A CN 103900139 A CN103900139 A CN 103900139A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air energy heat pump heat supply and heating system with a water tank inside. The air energy heat pump heating system comprises a machine unit part, a heat supply part, a heating part and an intelligent control part. The machine unit part comprises an air energy heat pump heating part, an electric heating part, a water way pipeline part and a control circuit part, the control circuit part is used for starting a compressor for heat supply when the temperature of the small-volume water tank is smaller than the starting temperature difference of the compressor, and when the temperature of the small-volume water tank reaches the set temperature, the electric heating part is controlled not to output electric heating power; when the temperature of the small-volume water tank can not reach the set temperature, according to the detected temperature difference of going-in water and going-out water and flow detected by the water way pipeline part, the electric heating part is controlled to output needed electric heating power; when the air energy heat pump heating part and the electric heating part both output power in a full-power mode and the temperature of the small-volume water tank does not reach the set temperature, according to the detected temperature, the water way pipeline part is controlled to regulate water flow through a water flow regulating valve to enable water temperature to be constant.
Description
Technical field
The present invention relates to inner water-tank air energy heat pump heat supply heating field, relate in particular to a kind of plug and play formula inner water-tank air energy heat pump heating system with Based Intelligent Control.
Background technology
Traditional inner water-tank air energy heat pump heating system is generally made up of three parts, and the one, host machine part, the 2nd, water tank part, the 3rd, heating system part; For domestic type water tank, 1, capacity is generally at 150-320L, water tank is bulky, when installation, need occupy construction area greatly, even if some water tanks use support to be installed on outside wall, due to the weight that water tank itself adds water, this type of mounting means is quite dangerous; 2, inner water tank itself adopts material and technique, no matter be stainless steel inner container or enamel inner container, due to the defect 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 poor area of water quality, heat exchanger tube can be corroded and bore a hole, and causes coolant leakage, once leak, will be fatefulue for unit; 4, between main frame and water tank, need tube connector to be connected, the artificial coolant leakage phenomenon producing while being difficult to avoid installing like this; 5, due to the hot pump characteristics of storage-type, water temperature need be risen to higher temperature, and required time is longer, can not meets instant water requirement, and to the water later stage, fluctuating temperature is larger, the comfortableness that impact is used; In addition, the height of condensation temperature determines the energy consumption of unit, and the unit of tradition with water tank moves for a long time under high condensation temperature and high condensing pressure, and the life-span of compressor will be a very large test; 6, adopting the water tank of storage-type, when water, generally all need mixed water, there will be so several problems, 1) the hot water utilization rate of water tank the inside is not high; 2) water tank is in insulating process, and declining inevitably appears in water temperature, increases energy consumption; 3) when user's house ornamentation is used water valve, must need to install mixed water valve, increase material cost.7, when general heating system is taked the heat in water tank, all need to, at a heat exchange coil of the inner installation of water tank, with grounding heat coil tube or radiator and water circulating pump formation closed-loop path, increase like this difficulty of water tank production technology, also occupy water tank capacity; 8, traditional heating system is without Based Intelligent Control, can not carry out various remote monitoring to heating system, cannot meet the more hommization demand of modern people: 1) such as user's needs in advance or time opening heating, but family nobody time, cannot realize; 2) user's long period outside, forget and close heating or heat supply water, cannot carry out long-range close heating or heat supply operation; 3) there is some fault in traditional heating system, need to carry out field assay eliminating, and particularly site is weak or from far-off regions after sale, and after-sale service promptness and user satisfaction reduce greatly.
Summary of the invention
The defect and the deficiency that exist for above-mentioned technology, propose a kind of inner water-tank plug and play formula air energy heat pump heating system, and it also can meet heating requirement in supplying hot water.
For solving the problems of the technologies described above, a technical scheme provided by the invention is:
A kind of inner water-tank air energy heat pump heating system is provided, comprise unit part, heat supply part, heating part and intelligent control part, described unit part comprises air energy heat pump heating part, heating partial, water route pipeline fitting part and control circuit part; Described control circuit part, for starting compressor heat supply according to the low capacity water tank temperature that detects during lower than the compressor start temperature difference, is controlled heating partial and is not exported in the time detecting that low capacity water tank temperature reaches design temperature; Described control circuit part is also with in the time detecting that low capacity water tank temperature can not reach design temperature, and the flow detecting according to the Inlet and outlet water temperature difference detecting and water route pipeline fitting part, controls heating partial and export needed electrical heating power; Described control circuit part is also for when air energy heat pump heating part and heating partial being all total power output low capacity water tank temperature while also not reaching design temperature, according to the temperature controlled water road pipeline fitting part detecting by Water flow adjusting valve regulating water flow so that coolant-temperature gage is constant; Described control circuit is also in the time receiving heating requirement command; judge whether to carry out heating instruction according to the temperature of the indoor environment temperature detecting or grounding heat coil tube; in the time that the temperature of indoor environment temperature or grounding heat coil tube reaches unlatching heating demand temperature, carry out heating function, in the time detecting that the temperature of indoor environment temperature or grounding heat coil tube reaches shutdown temperature, close heating function.
Wherein, described air energy heat pump heating part comprises compressor, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve, low capacity water tank, heating plate type heat exchanger, filter, expansion valve, evaporimeter, release condenser, release throttle capillary tube, gas-liquid separator, fan blade, motor, defrosting capillary, after connecting by pipeline with upper-part, form the heat pump heat supply heating system of sealing; Wherein, compressor, the first magnetic valve, low capacity water tank, heating plate type heat exchanger, filter, expansion valve, evaporimeter, gas-liquid separator, the compressor connecting successively forms compressor assembly the first heat supply heating path; Connected compressor, the 4th magnetic valve, heating plate type heat exchanger, filter, expansion valve, evaporimeter, gas-liquid separator, compressor form compressor assembly the second heat supply heating path successively; Connected compressor, the 3rd magnetic valve, release condenser, release throttle capillary tube, evaporimeter, gas-liquid separator, compressor form compressor assembly release path successively; Connected compressor, the second magnetic valve, defrosting capillary, evaporimeter, gas-liquid separator, compressor form compressor assembly defrosting path successively.
Wherein, described low capacity water tank is coated with a masking foil heating tape, and described masking foil heating tape is provided with temperature controller, and described temperature controller is for judging whether to open described masking foil heating tape according to environment temperature and water tank temperature.
Wherein, heating partial comprises heating unit assembly, silicon controlled component, the first temperature controller, the second temperature controller, casing, heating unit assembly water inlet pipe, heating unit assembly outlet pipe, terminal board etc.
Wherein, described water route pipeline fitting part comprises connected successively water flow switch, low capacity water tank, water ga(u)ge, Water flow adjusting valve, and wherein, Water flow adjusting valve is connected with described heating partial.
Wherein, described control circuit comprises master control borad and guidance panel, and described master control borad comprises MCU, temperature sensing circuit and electrical heating power control circuit.
Wherein, described intelligent control part comprises described control circuit and control terminal, server, wireless communication module; Described server is connected with described control terminal and wireless communication module respectively by wireless network, described guidance panel connects master control borad by a RS485/232 communicating circuit, described wireless communication module by wireless network taking server as terminal and control terminal carry out communication, described wireless communication module is connected with described master control borad by the 2nd RS485/232 communicating circuit.
Wherein, described wireless communication module and described guidance panel are integrated.
Wherein, described wireless communication module and master control borad are integrated.
The invention has the beneficial effects as follows, a kind of inner water-tank plug and play formula Tempeerature-constant air energy heat pump heat supply heating system with Based Intelligent Control is proposed, integrated design, produce and install more convenient, and provide heating function when can improving water comfort level, thereby realize the diversity of unit function, and realize network-enabled intelligent Long-distance Control, meet the more hommization demand of modern people.
Brief description of the drawings
Fig. 1 is the schematic diagram of a kind of inner water-tank air energy heat pump heating system in first embodiment of the invention;
Fig. 2 is that the present invention is the structural representation of heating partial of the present invention;
Fig. 3 is that the present invention is the schematic diagram of intelligent control part in an embodiment.
Main element symbol description
Compressor 1; The first magnetic valve 2; Low capacity water tank 4; Gas-liquid separator 9; Filter 10;
Expansion valve 11; The second magnetic valve 12; Defrosting capillary 13; The 3rd magnetic valve 14; Motor 15;
Heating plate type heat exchanger 23; Water flow switch 8; Water ga(u)ge 5;
Water flow adjusting valve 6; Heating partial 7; Heating unit assembly outlet pipe 71; Heating unit assembly 72;
The first temperature controller 73; Casing 74; The second temperature controller 75; Terminal board 76; Silicon controlled component 77;
Heating unit assembly water inlet pipe 78; Showerhead 201; Bathtub 202; Water circulating pump 24;
Water flow switch 25; Grounding heat coil tube or fin 22; Masking foil heating tape 3.
Detailed description of the invention
By describing technology contents of the present invention, structural feature in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1, for the schematic diagram of a kind of inner water-tank air energy heat pump heating system in first embodiment of the invention, inner water-tank air energy heat pump heating system comprises unit part, heat supply part, heating part and intelligent control part, described unit part comprises air energy heat pump heating part, heating partial, water route pipeline fitting part and control circuit part.
Described control circuit part, for starting compressor heat supply according to the low capacity water tank temperature that detects during lower than the compressor start temperature difference, is controlled heating partial and is not exported in the time detecting that low capacity water tank temperature reaches design temperature; Described control circuit part is also with in the time detecting that low capacity water tank temperature can not reach design temperature, and the flow detecting according to the Inlet and outlet water temperature difference detecting and water route pipeline fitting part, controls heating partial and export needed electrical heating power; Described control circuit part is also for when air energy heat pump heating part and heating partial being all total power output low capacity water tank temperature while also not reaching design temperature, according to the temperature controlled water road pipeline fitting part detecting by Water flow adjusting valve regulating water flow so that coolant-temperature gage is constant; Described control circuit is also in the time receiving heating requirement command; judge whether to carry out heating instruction according to the temperature of the indoor environment temperature detecting or grounding heat coil tube; in the time that reaching unlatching heating demand temperature, the temperature of indoor environment temperature or grounding heat coil tube carries out heating function, when detecting that the temperature of indoor environment temperature or grounding heat coil tube reaches shutdown temperature and closes heating function.
Described unit part comprises air energy heat pump heating part, heating partial 7, water route pipeline fitting part and control circuit part.Particularly, described air energy heat pump heating part comprises compressor 1, the first magnetic valve 2, low capacity water tank 4, gas-liquid separator 9, filter 10, expansion valve 11, the second magnetic valve 12, defrosting capillary 13, the 3rd magnetic valve 14, motor 15, fan blade 16, release capillary 17, evaporimeter 18, release condenser 19, the 4th magnetic valve 21, heating plate type heat exchanger 23.
Wherein, compressor 1, the first magnetic valve 2, low capacity water tank 4, heating plate type heat exchanger 23, filter 10, expansion valve 11, evaporimeter 18, gas-liquid separator 9, the compressor 1 connecting successively forms compressor assembly the first heat supply heating path; Connected compressor 1, the 4th magnetic valve 21, heating plate type heat exchanger 23, filter 10, expansion valve 11, evaporimeter 18, gas-liquid separator 9, compressor 1 form compressor assembly the second heat supply heating path successively; Connected compressor 1, the 3rd magnetic valve 14, release condenser 19, release capillary 17, evaporimeter 18, gas-liquid separator 9, compressor 1 form compressor assembly release path successively; Connected compressor 1, the second magnetic valve 12, defrosting capillary 13, evaporimeter 18, gas-liquid separator 9, compressor 1 form compressor assembly defrosting path successively.Above system flow is in service, and motor 15 fan blades 16 will be opened with out of service according to demand.
Described control circuit part comprises master control borad and guidance panel, and described master control borad comprises MCU, temperature sensing circuit and electrical heating power control circuit.Described control circuit part also in the time selecting to occur overheating problem after correct compressor combination according to the 4th magnetic valve or the 5th electromagnetic valve work described in the leaving water temperature control detecting.Described control circuit part also for passing through electronic mixed water valve, the turnover ratio of adjusting heat pump water outlet and cold water in the time there is overheating problem after the correct compressor combination of selection.
Described water route pipeline fitting part comprises connected successively water flow switch 8, low capacity water tank 4, water ga(u)ge 5, Water flow adjusting valve 6, and wherein, Water flow adjusting valve 6 is connected with described heating partial 7.Because water tank volume is very little, consider in the lower situation of environment temperature, water temperature declines very fast, for avoiding under without regimen condition, compressor start, described low capacity water tank 4 is coated with a masking foil heating tape, and described masking foil heating tape is provided with temperature controller, and described temperature controller is for judging whether to open described masking foil heating tape 3 according to environment temperature and water tank temperature.
Referring to Fig. 2, is the structural representation of heating partial of the present invention.Heating partial comprises heating unit assembly outlet pipe 71, heating unit assembly 72, the first temperature controller 73, casing 74, the second temperature controller 75, terminal board 76, silicon controlled component 77, heating unit assembly water inlet pipe 78.Heating partial operation principle is: detect coolant-temperature gage and in comparing with design temperature by leaving water temperature sensor, information is fed back to MCU, judge whether to open heating partial, control heating unit assembly 72 electric after, MCU accurately controls silicon controlled component 77, and required heating power is provided, thereby ensures that water outlet is constant.
Referring to Fig. 3, is the schematic diagram of intelligent control part in an embodiment of the present invention.Described intelligent control part comprises described control circuit and control terminal, server, wireless communication module, described server is connected with described control terminal and wireless communication module respectively by wireless network, described guidance panel connects master control borad by a RS485/232 communicating circuit, described wireless communication module by wireless network taking server as terminal and control terminal carry out communication, described wireless communication module is connected with described master control borad by the 2nd RS485/232 communicating circuit.Wherein, in the present embodiment, described wireless communication module and described guidance panel are integrated, and in another embodiment, described wireless communication module and master control borad are integrated.
Described heating part divides and comprises showerhead 201, bathtub 202, and its configuration is determined according to actual finishing and the installation situation of user family, can meet the water requirements of multiple use water spots with water end (W.E.) simultaneously.Described heating part comprises water circulating pump 24, water flow switch 25, grounding heat coil tube or fin 22.Can, according to user to the demand heating, meet the use of grounding heat coil tube and fin simultaneously.
Adopt the advantage of such scheme to be: 1, to adopt the built-in design of water tank, save installing space, easy for installation and use safety; 2, because inner water-tank capacity is little, generally only have 15L left and right, welding and processing technology are easy to guarantee, and also relatively little for the leak detection workload of integrated water tank, therefore substantially can stop the phenomenon that water tank leaks; 3,, owing to adopting corrosion-resistant degree very high titanium pipe, even if water quality is poor again, also can ensure, in the inner coil pipe perforation that is not corroded service life, to cause the situation that unit is scrapped; 4, owing to having reduced the link that uses tube connector, greatly reduced the probability of coolant leakage; 5, the designed unit of this programme, can accomplish plug and play, saves the time of waiting for water, ensures constant-temperature effluent, improves the comfortableness of water, and can ensure the continuation of water; Unit is in this water situation, and efficiency is higher, more energy-conservation, and be conducive to source pump and safely and steadily run, thus the service life of guarantee unit; 6, water tank volume own is very little, can not have the problem that hot water utilization rate is low, adds and adopts tinfoil paper heating tape, more there will not be because heat insulation effect is not good, causes the problem of energy waste, can reduce in addition the use cost of user's valve class; 7, use release condenser by design, in avoiding leaving water temperature too high, can reduce the operating load of unit, thereby greatly reduce units consumption, meet the requirement that national energy-saving reduces discharging; 8, according to dump power, in the situation that the judgement increase water yield can also ensure that water outlet is constant, by electronic mixed water valve, carry out the mixed water of bypass, can make so total water flow larger, water will be more comfortable; 9, adopt built-in little waterbox design, solve compressor during not stopping, can ensure to continue water demand; 10, meeting under the prerequisite of hot-water supply requirement, can select heating mode by guidance panel, realize room heating demand; 11, the water tank of this heating system is built-in, and has thermostat hot water supply function and heating function; 12, adopt remote control function, user can use control terminal, and as mobile phone or other equipment that can network, heating system is carried out to intellectuality and control, thus the human oriented design of the system of embodiment.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. an inner water-tank air energy heat pump heating system, is characterized in that, comprises unit part, heat supply part, heating part and intelligent control part, and described heating part comprises water circulating pump, water flow switch, grounding heat coil tube or fin.Described unit part comprises air energy heat pump heating part, heating partial, water route pipeline fitting part and control circuit part; Described control circuit part, for starting compressor heat supply according to the low capacity water tank temperature that detects during lower than the compressor start temperature difference, is controlled heating partial and is not exported in the time detecting that low capacity water tank temperature reaches design temperature; Described control circuit part is also with in the time detecting that low capacity water tank temperature can not reach design temperature, and the flow detecting according to the Inlet and outlet water temperature difference detecting and water route pipeline fitting part, controls heating partial and export needed electrical heating power; Described control circuit part is also for when air energy heat pump heating part and heating partial being all total power output low capacity water tank temperature while also not reaching design temperature, according to the temperature controlled water road pipeline fitting part detecting by Water flow adjusting valve regulating water flow so that coolant-temperature gage is constant; Described control circuit is also in the time receiving heating requirement command; judge whether to carry out heating instruction according to the temperature of the indoor environment temperature detecting or grounding heat coil tube; in the time that reaching unlatching heating demand temperature, the temperature of indoor environment temperature or grounding heat coil tube carries out heating function, when detecting that the temperature of indoor environment temperature or grounding heat coil tube reaches shutdown temperature and closes heating function.
2. a kind of inner water-tank air energy heat pump heating system according to claim 1, it is characterized in that, described air energy heat pump heating part comprises compressor, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve, low capacity water tank, heating plate type heat exchanger, filter, expansion valve, evaporimeter, release condenser, release throttle capillary tube, gas-liquid separator, fan blade, motor, defrosting capillary, after connecting by pipeline with upper-part, form the heat pump heat supply heating system of sealing; Wherein,
Compressor, the first magnetic valve, low capacity water tank, heating plate type heat exchanger, filter, expansion valve, evaporimeter, gas-liquid separator, the compressor connecting successively forms compressor assembly the first heat supply heating path;
Connected compressor, the 4th magnetic valve, heating plate type heat exchanger, filter, expansion valve, evaporimeter, gas-liquid separator, compressor form compressor assembly the second heat supply heating path successively;
Connected compressor, the 3rd magnetic valve, release condenser, release throttle capillary tube, evaporimeter, gas-liquid separator, compressor form compressor assembly release path successively;
Connected compressor, the second magnetic valve, defrosting capillary, evaporimeter, gas-liquid separator, compressor form compressor assembly defrosting path successively.
3. a kind of inner water-tank air energy heat pump heating system according to claim 1, it is characterized in that, described low capacity water tank is coated with a masking foil heating tape, described masking foil heating tape is provided with temperature controller, and described temperature controller is for judging whether to open described masking foil heating tape according to environment temperature and water tank temperature.
4. a kind of inner water-tank air energy heat pump heating system according to claim 1, it is characterized in that, heating partial comprises heating unit assembly, silicon controlled component, the first temperature controller, the second temperature controller, casing, heating unit assembly water inlet pipe, heating unit assembly outlet pipe, terminal board etc.
5. a kind of inner water-tank air energy heat pump heating system according to claim 1, it is characterized in that, described water route pipeline fitting part comprises connected successively water flow switch, low capacity water tank, water ga(u)ge, Water flow adjusting valve, wherein, Water flow adjusting valve is connected with described heating partial.
6. a kind of inner water-tank air energy heat pump heating system according to claim 1, is characterized in that, described control circuit comprises master control borad and guidance panel, and described master control borad comprises MCU, temperature sensing circuit and electrical heating power control circuit.
7. a kind of inner water-tank air energy heat pump heating system according to claim 6, is characterized in that, described intelligent control part comprises described control circuit and control terminal, server, wireless communication module; Described server is connected with described control terminal and wireless communication module respectively by wireless network, described guidance panel connects master control borad by a RS485/232 communicating circuit, described wireless communication module by wireless network taking server as terminal and control terminal carry out communication, described wireless communication module is connected with described master control borad by the 2nd RS485/232 communicating circuit.
8. a kind of inner water-tank air energy heat pump heating system according to claim 7, is characterized in that, described wireless communication module and described guidance panel are integrated.
9. a kind of inner water-tank air energy heat pump heating system according to claim 7, is characterized in that, described wireless communication module and master control borad are integrated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210574799.6A CN103900139B (en) | 2012-12-25 | 2012-12-25 | A kind of inner water-tank air energy heat pump heating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210574799.6A CN103900139B (en) | 2012-12-25 | 2012-12-25 | A kind of inner water-tank air energy heat pump heating system |
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| CN103900139A true CN103900139A (en) | 2014-07-02 |
| CN103900139B CN103900139B (en) | 2016-06-29 |
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| CN201210574799.6A Expired - Fee Related CN103900139B (en) | 2012-12-25 | 2012-12-25 | A kind of inner water-tank air energy heat pump heating system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104296375A (en) * | 2014-11-03 | 2015-01-21 | 广州德能热源设备有限公司 | Hot water machine unit with air source heat pump |
| CN107062373A (en) * | 2017-05-12 | 2017-08-18 | 朱广艺 | Heating Special water pump water tank integration apparatus and its heating method |
| CN107676858A (en) * | 2017-10-20 | 2018-02-09 | 暖卫仕（北京）热能科技发展有限公司 | heating system |
| CN112359958A (en) * | 2020-11-02 | 2021-02-12 | 钱小进 | Low-rise building wall with external solar heating structure |
| CN113944951A (en) * | 2021-10-22 | 2022-01-18 | 中铁第四勘察设计院集团有限公司 | Modular water heating device and control method |
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| CN203052802U (en) * | 2012-12-25 | 2013-07-10 | 福州斯狄渢电热水器有限公司 | Air-energy heat-pump heat supply heating system with built-in water tank |
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| CN107062373A (en) * | 2017-05-12 | 2017-08-18 | 朱广艺 | Heating Special water pump water tank integration apparatus and its heating method |
| CN107676858A (en) * | 2017-10-20 | 2018-02-09 | 暖卫仕（北京）热能科技发展有限公司 | heating system |
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| CN112359958A (en) * | 2020-11-02 | 2021-02-12 | 钱小进 | Low-rise building wall with external solar heating structure |
| CN113944951A (en) * | 2021-10-22 | 2022-01-18 | 中铁第四勘察设计院集团有限公司 | Modular water heating device and control method |
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|---|---|
| CN103900139B (en) | 2016-06-29 |
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