CN211781353U - Double-energy composite efficient multifunctional integrated device - Google Patents

Double-energy composite efficient multifunctional integrated device Download PDF

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Publication number
CN211781353U
CN211781353U CN202020461766.0U CN202020461766U CN211781353U CN 211781353 U CN211781353 U CN 211781353U CN 202020461766 U CN202020461766 U CN 202020461766U CN 211781353 U CN211781353 U CN 211781353U
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heat
water
air
pipeline
dual
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付梦菲
杜永恒
孙旭灿
常建国
孟照峰
苏甦
冯育魁
李�杰
郭猛
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Henan Provincial Academy Of Building Research Co ltd
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Henan Provincial Academy Of Building Research Co ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

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Abstract

The utility model belongs to the field of new energy equipment, in particular to a double-energy composite high-efficiency multifunctional integrated device, which comprises a solar dual-purpose heat collector, a warm air auxiliary component, a heat storage water tank, a water supplementing tank and an air source heat pump component, wherein the warm air auxiliary component connects the solar dual-purpose heat collector and a user side in series to form a warm air loop; the heat storage water tank is provided with a water tank heat exchanger which is communicated with the solar dual-purpose heat collector; the heat storage water tank is communicated with the water replenishing tank through a pipeline; the multifunctional integrated device enables green renewable energy sources to realize village and town family heating, improves the combination degree and the utilization rate of solar energy and air energy in the use process, improves the heating level of users in winter, and reduces the heating cost of the users in winter to a certain extent.

Description

Double-energy composite efficient multifunctional integrated device
Technical Field
The utility model relates to a new forms of energy equipment field, a compound high-efficient multi-functional integrated device of dual energy specifically says so.
Background
In rural areas in northern China, people adopt modes such as charcoal, coal and electric heating to warm in winter, the heating mode is backward and single, the energy utilization rate is low, the air pollution is serious, and the indoor heating effect is unsatisfactory. In the face of the problem of increasingly shortage of energy in China, how to utilize green renewable energy to realize efficient, environment-friendly and energy-saving heating and research a heating mode suitable for village and town buildings is a problem to be solved urgently at present.
The problem of difficult heating generally exists in rural residences in northern areas, the heating mode is single, the energy utilization rate is low, and the requirement of people on heating in winter is difficult to meet; the requirement of heating by heating air conditioners in winter also needs to consume great energy, and is not in accordance with the direction of sustainable development of renewable energy sources, although the northern area adopts independent solar energy or air energy heat pump heating equipment, the combination degree of the two is not high, the heating structure is more traditional, and the heating energy consumption is relatively high, so that how to overcome the technical problems and defects in the prior art becomes the problem to be solved.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to overcome the drawbacks described in the background art, and thus to realize a dual-energy composite high-efficiency multifunctional integrated device, which makes it possible to realize the heating of village and town families by green renewable energy, and improves the combination degree and utilization rate of solar energy and air energy in the using process, improves the level of heating in winter by users, and reduces the cost of heating in winter by users to a certain extent.
In order to achieve the purpose of the invention, the technical scheme of the utility model is as follows: a dual-energy composite high-efficiency multifunctional integrated device comprises a solar dual-purpose heat collector, a warm air auxiliary assembly, a heat storage water tank, a water supplementing tank and an air source heat pump assembly, wherein the solar dual-purpose heat collector is used for heating water and simultaneously heating air; the solar dual-purpose heat collector is connected with a user side in series by the warm air auxiliary assembly to form a warm air loop; the heat storage water tank is provided with a water tank heat exchanger, and the water tank heat exchanger is communicated with the solar dual-purpose heat collector through a pipeline with a solar circulating pump; the water replenishing tank is externally connected with a tap water source, the heat storage water tank is communicated with the water replenishing tank through a pipeline, and the water replenishing tank supplies water for the heat storage water tank; the air source heat pump assembly is communicated with the heat storage water tank through a pipeline with a circulating water pump, and the air source heat pump assembly is further communicated with the water replenishing tank through a pipeline with a circulating water pump. Tap water in the water replenishing tank can timely replenish domestic hot water in the heat storage water tank, and can also provide cooling water for the air source heat pump unit in summer, so that the operation efficiency of the heat pump unit is improved.
Further, dual-purpose heat collector of solar energy includes shell, glass apron, heat medium branch pipe, heat medium trunk, fin, heat-sink shell, air intake and air outlet, fin parallel arrangement is in the shell, the perpendicular fin of heat-sink shell sets up in fin outside end, the heat medium branch pipe passes and the setting that is parallel to each other in the shell from radiating fin, and the heat medium trunk is perpendicular and the intercommunication with heat medium branch pipe, the glass apron is fixed to be set up on the shell lateral wall, and air intake and air outlet set up respectively in the both ends of shell, the both ends pipeline of warm braw auxiliary assembly communicates with air intake and air outlet respectively.
Furthermore, the warm air auxiliary assembly comprises an air inlet pipeline, an air return pipeline, a fan and a temperature control valve, the air inlet pipeline and the air return pipeline are respectively communicated with an air outlet and an air inlet of the solar dual-purpose heat collector, the fan is serially arranged on the air inlet pipeline, and the start and stop of the fan are controlled by the temperature control valve.
Further, still be provided with electrical heating in the hot water storage tank for the auxiliary heating of hot water in the hot water storage tank, when the hot water in the hot water storage tank can not satisfy the demand winter, can heat the hot water in the hot water storage tank through electrical heating, in order to supply user end domestic water.
Furthermore, the air source heat pump comprises a sleeve fin heat exchanger, a four-way reversing valve, a user side heat exchanger and a throttle valve which are arranged in series, and a compressor communicated with the four-way reversing valve, wherein two ends of the sleeve fin heat exchanger are communicated with a heat storage water tank through a pipeline with a circulating water pump.
Furthermore, the water supplementing tank is communicated with the air source heat pump pipeline and is connected with the heat storage water tank and is communicated with the air source heat pump pipeline in parallel to share the circulating water pump, the circulating water pump is connected in series with the air source heat pump water inlet pipe, a water outlet electromagnetic valve and a water return electromagnetic valve are respectively arranged on a water outlet and a water return port of the heat storage water tank, which are communicated with the air source heat pump component, and a cooling electromagnetic valve is connected in series with the pipeline between the water supplementing tank and the circulating water pump.
Furthermore, the sleeve fin heat exchanger comprises an outer sleeve, an inner sleeve arranged in the cavity of the outer sleeve and an outward-extending fin fixedly arranged on the outer wall of the outer sleeve; the inner cavity of the inner sleeve is communicated with the heat storage water tank through a pipeline with a circulating water pump, a cavity between the outer sleeve and the inner sleeve is a heat pump working medium cavity, and a heat pump working medium of the air source heat pump circularly penetrates through the heat pump working medium cavity of the sleeve fin heat exchanger; the purpose of design like this, the water in the solar heating heat storage water tank winter, the interior sleeve pipe of sleeve pipe fin heat exchanger is flowed through again to the water of heating in the heat storage water tank, and at this moment, interior sheathed tube hot water carries out the heat exchange with the intraductal heat pump working medium of overcoat, and the heat storage water tank can provide auxiliary heat source again for air source heat pump unit's sleeve pipe fin heat exchanger promptly, realizes the synchronous compound heat transfer of heat pump working medium and the outer air of pipe wall and the water in the interior sleeve pipe in the sleeve pipe heat exchanger, has the dual function of tube fin heat exchanger and.
The utility model discloses a compound high-efficient multi-functional integrated device of dual energy's beneficial effect:
the utility model discloses a compound high-efficient multi-functional integrated device of dual-energy, winter both can be directly through the indoor of the dual-purpose heat collector heated air of solar energy direct supply user side, the water supply air source heat pump in can utilizing solar energy heating heat storage water tank again, regard solar energy as the auxiliary heat source of air source heat pump heat supply, the efficiency of air source heat pump at winter heating has been improved, the complementation of the energy has been realized, can satisfy user heating in winter, the refrigerated demand in summer, can satisfy the supply of user life hot water all the year round again, the daily life of giving people has brought very big convenience. The energy is greatly saved in the whole operation process, no pollutant is discharged in the operation process, the energy is saved, the environment is protected, the device is economical and practical, a high-efficiency multifunctional integrated device can be really realized, and the bearable energy demand of residents is met; has good economic benefit and social benefit, and is suitable for popularization and use.
Drawings
Fig. 1 is a schematic structural diagram of a dual-energy composite high-efficiency multifunctional integrated device of the present invention;
FIG. 2 is a schematic structural diagram of a tube-in-tube fin heat exchanger;
FIG. 3 is a schematic structural view of a solar dual-purpose heat collector;
fig. 4 is a schematic left sectional view of fig. 3.
In the figure: 1-solar dual-purpose heat collector, 101-shell, 102-glass cover plate, 103-heat medium branch pipe, 104-heat medium main pipe, 105-fin, 106-heat absorption layer, 107-air inlet, 108-air outlet, 2-warm air auxiliary component, 201-air inlet pipe, 202-air return pipe, 203-fan, 204-temperature control valve, 3-heat storage water tank, 301-water tank heat exchanger, 302-electric heating, 4-water supplement tank, 5-air source heat pump component, 501-sleeve pipe fin heat exchanger, 511-outer sleeve pipe, 512-inner sleeve pipe, 513-outward fin, 502-four-way reversing valve, 503-user side heat exchanger, 504-throttle valve, 505-compressor, 6-water outlet electromagnetic valve, 7-water return electromagnetic valve, 8-cooling electromagnetic valve, 9-user end.
Detailed Description
The dual-energy composite high-efficiency multifunctional integrated device of the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, 3 and 4, the dual-energy composite high-efficiency multifunctional integrated device of the embodiment comprises a dual-purpose solar heat collector, a warm air auxiliary assembly, a heat storage water tank, a water replenishing tank and an air source heat pump assembly, wherein the dual-purpose solar heat collector is used for heating water, meanwhile, the solar dual-purpose heat collector can also heat air, and comprises a shell, a glass cover plate, a heating medium branch pipe, a heating medium main pipe, fins, a heat absorption layer, an air inlet and an air outlet, the fins are arranged in the shell in parallel, the heat absorption layer is vertical to the fins and is arranged at the outer side end part of the fins, the heat medium branch pipes penetrate through the radiating fins and are arranged in the shell in parallel, the heat medium main pipes are perpendicular to and communicated with the heat medium branch pipes, the glass cover plate is fixedly arranged on the outer side wall of the shell, and the air inlet and the air outlet are respectively arranged at two ends of the shell, and pipelines at two ends of the warm air auxiliary assembly are respectively communicated with the air inlet and the air outlet.
Referring to fig. 1, in this embodiment, the solar dual-purpose heat collector and the user side are connected in series by the warm air auxiliary assembly to form a warm air loop, the warm air auxiliary assembly includes an air inlet duct, an air return duct, a fan and a temperature control valve, the air inlet duct and the air return duct are respectively communicated with an air outlet and an air inlet of the solar dual-purpose heat collector, the fan is connected in series to the air inlet duct, and the start and stop of the fan are controlled by the temperature control valve.
In this embodiment, referring to fig. 1, the hot water storage tank is provided with a water tank heat exchanger, the water tank heat exchanger is communicated with a hot heat medium main pipe of the solar dual-purpose heat collector through a pipeline with a solar circulating pump, the hot water storage tank is also internally provided with electric heating, the heating power of the electric heating is selected from 800W to 2000W, the electric heating is used for auxiliary heating of water in the hot water storage tank, and when hot water in the hot water storage tank cannot meet the requirement in winter, the hot water in the hot water storage tank can be heated through the electric heating to supply domestic water to a user end.
The water replenishing tank is externally connected with a tap water source, the heat storage water tank is communicated with the water replenishing tank through a pipeline, and the water replenishing tank supplies water for the heat storage water tank; the air source heat pump assembly is communicated with the heat storage water tank through a pipeline with a circulating water pump, and is also communicated with the water supplementing tank through a pipeline with a circulating water pump, tap water in the water supplementing tank can timely supplement domestic hot water in the heat storage water tank, and cooling water can be provided for the air source heat pump assembly in summer, so that the operation efficiency of the heat pump assembly is improved; the air source heat pump comprises a sleeve fin heat exchanger, a four-way reversing valve, a user side heat exchanger and a throttle valve which are arranged in series, and further comprises a compressor communicated with the four-way reversing valve, wherein two ends of the sleeve fin heat exchanger are communicated with a heat storage water tank through a pipeline with a circulating water pump.
The air source heat pump is a relatively mature prior art, the language description and the drawings in this patent only describe or describe the structural features related to this application, and do not draw or describe other structural features of the air source heat pump of the prior art that are not related to this application, for example, neither the double-pipe fin heat exchanger nor the user-side heat exchanger draws the technical features of the blower fan, etc., and further description about other prior art features of the air source heat pump is omitted here.
In the implementation, in order to save installation and use cost, the water supplementing tank communicated air source heat pump pipeline and the heat storage tank communicated air source heat pump pipeline are connected in parallel and share the circulating water pump, and the circulating water pump is connected in series and arranged on the water inlet pipe of the air source heat pump, so that one circulating water pump is saved, and manufacturing cost is saved. Referring to fig. 1, a water outlet solenoid valve and a water return solenoid valve are respectively arranged on a water outlet and a water return port of the heat storage water tank, which are communicated with the air source heat pump assembly, and a cooling solenoid valve is arranged in series on a pipeline between the water supply tank and the circulating water pump.
In the present implementation, referring to fig. 2, the tube-fin heat exchanger includes an outer tube, an inner tube disposed in a lumen of the outer tube, and an extended fin fixedly disposed on an outer wall of the outer tube; the inner cavity of the inner sleeve is communicated with the heat storage water tank through a pipeline with a circulating water pump, a cavity between the outer sleeve and the inner sleeve is a heat pump working medium cavity, and a heat pump working medium of the air source heat pump circularly penetrates through the heat pump working medium cavity of the sleeve fin heat exchanger; the purpose of design like this, the water in the solar heating heat storage water tank winter, the interior sleeve pipe of sleeve pipe fin heat exchanger is flowed through again to the water of heating in the heat storage water tank, and at this moment, interior sheathed tube hot water carries out the heat exchange with the intraductal heat pump working medium of overcoat, and the heat storage water tank can provide auxiliary heat source again for air source heat pump unit's sleeve pipe fin heat exchanger promptly, realizes the synchronous compound heat transfer of heat pump working medium and the outer air of pipe wall and the water in the interior sleeve pipe in the sleeve pipe heat exchanger, has the dual function of tube fin heat exchanger and.
The utility model discloses a high-efficient multi-functional integrated device's of dual-energy complex theory of operation:
when solar energy is used as a main source of domestic hot water, the solar dual-purpose heat collector absorbs the solar energy and heats a heating medium in a heating medium branch pipe, a circulating pipeline is formed by the pipeline, the water tank heat exchanger and the solar circulating pump, and heat is continuously transferred to water in the heat storage water tank.
When the air source heat pump is used as a main source of domestic hot water, water in the inner sleeve of the sleeve-fin heat exchanger enters the water supplementing tank from tap water in the water supplementing tank through the pipeline, the cooling electromagnetic valve and the circulating water pump, exchanges heat with heat pump working media in the outer sleeve of the sleeve-fin heat exchanger or exchanges heat with outdoor air between the outer wall and the outward-extending fins, and the water after heat exchange returns to the heat storage water tank through the pipeline and the water return electromagnetic valve, so that heat is transferred to the water in the heat storage water tank.
Solar energy and air source heat pump can also work together and provide life hot water, and three kinds of mode can all obtain life hot water. When the domestic hot water can not be prepared in the three modes, the water in the heat storage water tank can be heated by the electric heating in the heat storage water tank.
Under the condition of sufficient sunlight in winter, the solar dual-purpose heat collector absorbs solar energy and heats air between fins of the solar dual-purpose heat collector, the heated air conveys hot air to a user end for direct heating through a fan and an air inlet pipeline of the warm air auxiliary assembly, and the start and stop of the fan are automatically controlled by an outdoor temperature control valve.
When the hot air in the solar dual-purpose heat collector can not meet the requirement of heating in winter, the air source heat pump starts to operate. The heat pump working medium in the outer sleeve of the sleeve-fin heat exchanger can exchange heat with outdoor air between the outer wall of the heat exchanger and the outward-extending fins to carry out heat pump heating; the heat pump working medium in the outer sleeve of the sleeve-fin heat exchanger can exchange heat with hot water in the inner sleeve to perform heat pump heating, the hot water in the inner sleeve of the sleeve-fin heat exchanger enters the pipe from hot water in a heat storage water tank through a water outlet electromagnetic valve and a circulating water pump, the hot water in the inner sleeve of the sleeve-fin heat exchanger flows from bottom to top and forms countercurrent sufficient heat exchange with the heat pump working medium flowing from top to bottom in the outer sleeve of the sleeve-fin heat exchanger, the hot water in the heat storage water tank provides an auxiliary heat source for the air source heat pump, the winter heating running performance of the air source heat pump is improved, and the heating effect. The heat pump working medium in the outer sleeve of the sleeve fin heat exchanger can exchange heat with outdoor air between the outer wall and the extended fins and low-temperature hot water in the inner sleeve simultaneously to heat the heat pump. The three operation modes can work through the electric control unit, so that the heating effect in winter is guaranteed, the electric control unit is a PLC and the like in the prior art, and the conventional electric control technology is omitted for further description.
When refrigeration needs exist in summer, heat pump working media in the user side heat exchanger exchange heat with indoor hot air, the heat pump working media are brought into the sleeve fin heat exchanger through the pipeline, the water outlet electromagnetic valve is in a closed state at the moment, tap water in the water replenishing tank enters the sleeve fin heat exchanger through the pipeline, the cooling electromagnetic valve and the circulating water pump, heat exchange between the heat pump working media in the outer sleeve and the tap water in the inner pipe or between the tap water and the air outside the outer pipe is achieved, and therefore the indoor refrigeration needs in summer are achieved.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments without departing from the concept of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention.

Claims (8)

1. The utility model provides a compound high-efficient multi-functional integrated device of dual energy which characterized in that: comprises that
The solar dual-purpose heat collector is used for heating water and heating air simultaneously;
the solar dual-purpose heat collector is connected with a user side in series to form a warm air loop;
the heat storage water tank is provided with a water tank heat exchanger, and the water tank heat exchanger is communicated with the solar dual-purpose heat collector through a pipeline with a solar circulating pump;
the water replenishing tank is externally connected with a tap water source, the heat storage water tank is communicated with the water replenishing tank through a pipeline, and the water replenishing tank supplies water to the heat storage water tank; and
and the air source heat pump assembly is communicated with the heat storage water tank through a pipeline with a circulating water pump, and is also communicated with the water replenishing tank through a pipeline with a circulating water pump.
2. The dual-energy composite high-efficiency multifunctional integrated device according to claim 1, characterized in that: the dual-purpose heat collector of solar energy includes shell, glass apron, heat medium branch pipe, heat medium main pipe, fin, heat-sink shell, air intake and air outlet, fin parallel arrangement is in the shell, the perpendicular fin of heat-sink shell sets up in fin outside end portion, the heat medium branch pipe passes and the setting that is parallel to each other in the shell from radiating fin, and the heat medium main pipe is perpendicular and the intercommunication with the heat medium branch pipe, the glass apron is fixed to be set up on the shell lateral wall, and air intake and air outlet set up respectively in the both ends of shell, the both ends pipeline of warm braw auxiliary assembly communicates with air intake and air outlet respectively.
3. The dual-energy composite high-efficiency multifunctional integrated device according to claim 2, characterized in that: the warm air auxiliary assembly comprises an air inlet pipeline, an air return pipeline, a fan and a temperature control valve, the air inlet pipeline and the air return pipeline are respectively communicated with an air outlet and an air inlet of the solar dual-purpose heat collector, the fan is serially connected with the air inlet pipeline, and the start and stop of the fan are controlled by the temperature control valve.
4. The dual-energy composite high-efficiency multifunctional integrated device according to claim 1, characterized in that: and the heat storage water tank is also internally provided with electric heating for auxiliary heating of water in the heat storage water tank.
5. The dual-energy composite high-efficiency multifunctional integrated device according to claim 1, characterized in that: the air source heat pump comprises a sleeve fin heat exchanger, a four-way reversing valve, a user side heat exchanger and a throttle valve which are arranged in series, and further comprises a compressor communicated with the four-way reversing valve, wherein two ends of the sleeve fin heat exchanger are communicated with a heat storage water tank through a pipeline with a circulating water pump.
6. The dual-energy composite high-efficiency multifunctional integrated device according to claim 5, characterized in that: the water supplementing tank is communicated with the air source heat pump pipeline and the heat storage tank is communicated with the air source heat pump pipeline, the pipelines are connected in parallel and then share the circulating water pump, and the circulating water pump is serially connected to the air source heat pump water inlet pipe.
7. The dual-energy composite high-efficiency multifunctional integrated device according to claim 5, characterized in that: the sleeve fin heat exchanger comprises an outer sleeve, an inner sleeve arranged in the cavity of the outer sleeve and an outward-extending fin fixedly arranged on the outer wall of the outer sleeve; the inner cavity of the inner sleeve is communicated with the heat storage water tank through a pipeline with a circulating water pump, and a cavity between the outer sleeve and the inner sleeve is a heat pump working medium cavity.
8. The dual-energy composite high-efficiency multifunctional integrated device according to claim 6, characterized in that: and a water outlet electromagnetic valve and a water return electromagnetic valve are respectively arranged on a water outlet and a water return port which are communicated with the air source heat pump assembly on the heat storage water tank, and a cooling electromagnetic valve is serially arranged on a pipeline between the water replenishing tank and the circulating water pump.
CN202020461766.0U 2020-04-02 2020-04-02 Double-energy composite efficient multifunctional integrated device Active CN211781353U (en)

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Application Number Priority Date Filing Date Title
CN202020461766.0U CN211781353U (en) 2020-04-02 2020-04-02 Double-energy composite efficient multifunctional integrated device

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Application Number Priority Date Filing Date Title
CN202020461766.0U CN211781353U (en) 2020-04-02 2020-04-02 Double-energy composite efficient multifunctional integrated device

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CN211781353U true CN211781353U (en) 2020-10-27

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