CN216281661U - Coupling phase change energy storage heating device - Google Patents

Abstract

The utility model relates to the technical field of heating, and discloses a coupling phase change energy storage heating device. The coupling phase-change energy-storage heating device comprises an evaporator, a condenser and a heat utilization terminal, wherein the evaporator is connected with the high-temperature side of the condenser in series through a first pipeline, a heat exchange medium flows through the first pipeline, the heat utilization terminal is connected with the low-temperature side of the condenser in series through a second pipeline, and water flows through the second pipeline; the condenser comprises a first condenser and a second condenser, the high-temperature side of the first condenser and the high-temperature side of the second condenser are communicated in parallel through a first pipeline, the low-temperature side of the first condenser and the low-temperature side of the second condenser are communicated in parallel through a second pipeline, an energy storage unit is arranged in the second condenser, and a phase change energy storage material is arranged in the energy storage unit. The coupling phase-change energy storage heating device reduces the intermediate heat exchange link, has higher energy storage and energy efficiency, is more in applicable phase-change materials, and saves the heating cost.

Description

Coupling phase change energy storage heating device

Technical Field

The utility model relates to the technical field of heating, in particular to a coupling phase change energy storage heating device.

Background

Along with the development of economy, the demand for supplying heat to coal is also increasing, and a series of environmental problems caused by the demand are also increasingly highlighted, especially the haze problem. The electric heating is a safe, clean and comfortable heating mode, avoids the storage and the transportation of coal, and avoids the threats of coal ash discharge and coal gas poisoning. However, the electric heating has large electricity consumption, the existing electric heating has low energy efficiency, and the energy storage technology is a key support technology for promoting the development of a multi-energy complementary system, and can play a plurality of roles of shifting peaks and filling valleys, smoothing treatment, planned output tracking, assisting service, solving electricity abandonment, constructing a friendly power supply, increasing the operation flexibility of the system and the like. However, in the existing air source heat pump, the COP only reaches about 1.5 in extremely cold weather, and the effect of high efficiency and energy saving is difficult to achieve.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model aims to provide a coupling phase-change energy-storage heating device, which reduces the intermediate heat exchange link, has high energy storage and energy efficiency, is suitable for more phase-change materials, and saves the heating cost.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a coupling phase-change energy-storage heating device comprises an evaporator, a condenser and a heat-consuming terminal, wherein the evaporator is connected with the high-temperature side of the condenser in series through a first pipeline, a heat exchange medium flows through the first pipeline, the heat-consuming terminal is connected with the low-temperature side of the condenser in series through a second pipeline, and water flows through the second pipeline;

the condenser includes first condenser and second condenser, the high temperature side of first condenser with the high temperature side of second condenser passes through the parallelly connected intercommunication of first pipeline, the low temperature side of first condenser with the low temperature side of second condenser passes through the parallelly connected intercommunication of second pipeline, be provided with the energy storage unit in the second condenser, be provided with phase change energy storage material in the energy storage unit.

As a preferred scheme of a coupled phase-change energy-storage heating device, the first condenser comprises a first shell and a first heat exchange tube, the first heat exchange tube is arranged in the first shell, the first shell is provided with a first water inlet and a first water outlet which are communicated with the second pipeline, and two ends of the first heat exchange tube are respectively penetrated through the first shell and communicated with the first pipeline; or

And a first heat exchange medium inlet and a first heat exchange medium outlet which are communicated with the first pipeline are formed in the first shell, and two ends of the first heat exchange pipe are respectively penetrated through the first shell and are communicated with the second pipeline.

As a preferred scheme of the coupling phase-change energy-storage heating device, the second condenser comprises a second shell and a second heat exchange tube, the second heat exchange tube is arranged in the second shell, the second shell is provided with a second water inlet and a second water outlet which are communicated with the second pipeline, two ends of the second heat exchange tube are respectively penetrated through the second shell and communicated with the first pipeline, and the energy storage unit is arranged on the periphery of the second heat exchange tube and attached to the outer wall of the second heat exchange tube; or

The second shell is provided with a second heat exchange medium inlet and a second heat exchange medium outlet which are communicated with the first pipeline, two ends of the second heat exchange tube are respectively penetrated through the second shell and communicated with the second pipeline, and the energy storage unit is arranged on the periphery of the second heat exchange tube and is attached to the outer wall of the second heat exchange tube.

As an optimal scheme of the coupling phase-change energy-storage heating device, the second condenser further comprises a third heat exchange tube, the third heat exchange tube is sleeved outside the second heat exchange tube, and the phase-change energy-storage material is arranged between the third heat exchange tube and the second heat exchange tube to form the energy-storage unit.

As a preferable scheme of the coupled phase-change energy-storage heating device, the evaporator comprises a first evaporator and a second evaporator, and the first evaporator and the second evaporator are communicated in parallel through the first pipeline.

As a preferred scheme of the coupled phase-change energy-storage heating device, the first evaporator includes an air heat-collecting coil, the air heat-collecting coil is communicated with the first pipeline, and the heat exchange medium circulating in the air heat-collecting coil can absorb heat in the air.

As an optimal scheme of the coupling phase-change energy-storage heating device, the second evaporator comprises a shell and a solar heat-collecting coil, the solar heat-collecting coil is arranged in the shell, two ends of the solar heat-collecting coil are respectively penetrated through the shell and communicated with the first pipeline, and the heat exchange medium circulating in the solar heat-collecting coil can absorb heat in sunlight.

As a preferred scheme of the coupled phase-change energy-storage heating device, the second evaporator further comprises a heat-insulating layer, and the heat-insulating layer is arranged between the shell and the solar heat-collecting coil pipe.

The optimal scheme of the coupled phase-change energy-storage heating device further comprises a compressor and an expansion valve, wherein the compressor and the expansion valve are communicated with the first pipeline and are respectively arranged at the outlet end and the inlet end of the heat exchange medium of the evaporator.

As a preferred scheme of the coupling phase-change energy-storage heating device, the coupling phase-change energy-storage heating device further comprises a steam-water separator, a liquid storage tank and a filter, wherein the steam-water separator is communicated with the first pipeline and arranged between the compressor and the evaporator, and the liquid storage tank and the filter are both communicated with the first pipeline and are sequentially arranged between the condenser and the expansion valve.

The utility model has the beneficial effects that:

the utility model provides a coupling phase-change energy-storage heating device which comprises an evaporator, a condenser and a heat utilization terminal, wherein the evaporator and the high-temperature side of the condenser are connected in series through a first pipeline in which a heat exchange medium flows, the heat utilization terminal is connected in series and communicated with the low-temperature side of the condenser through a second pipeline in which water flows, the heat exchange medium is heated and heated in the evaporator and then enters the condenser to exchange heat with the water, heat is transferred to the water to heat the water, and the heated water enters the heat utilization terminal to be used by a user to complete a heating cycle. And the condenser is parallelly connected by first condenser and second condenser and forms to set up the energy storage unit in the second condenser, make can pass through the energy storage unit energy storage or by the heat supply of energy storage unit when the heating as required. When the heat supplied by the evaporator is larger than the heat required by the heat using terminal, the heat can be stored through the energy storage unit; when the heat supplied by the evaporator is less than the heat required by the heat using terminal, the heat stored in the energy storage unit can be utilized to ensure normal heat supply to the heat using terminal; when the inconvenient use of evaporimeter, the heat of storing in can the exclusive use heat-retaining unit improves this change energy storage heating system's application scope, improves the practicality to guarantee under the multiple condition homoenergetic normally to heat supply terminal. Under the structure, the energy-saving heat pump can be freely adjusted according to the external environment and the heat consumption, the energy is saved, the operation is simple, and the energy efficiency is higher. And because the heat exchange medium directly exchanges heat with the energy storage unit in the condenser, the heat exchange of intermediate-stage water is reduced, the energy efficiency can be improved by about 10 percent, and the heating cost is comprehensively saved by not less than 50 percent. Meanwhile, the condition that the phase-change material selection area is narrowed due to the existence of the supercooling degree is avoided, and more phase-change material selection modes can be provided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic diagram of a coupled phase change energy storage heating system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a first condenser according to an embodiment of the present invention;

fig. 3 is a schematic diagram of the internal structure of a second condenser according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an air heat collecting coil according to an embodiment of the present invention;

fig. 5 is a schematic view of the internal structure of a second evaporator according to an embodiment of the present invention.

In the figure:

10. a first conduit; 20. a second conduit;

1. an evaporator; 11. a first evaporator; 111. an air heat collection coil; 12. a second evaporator; 121. a housing; 122. a solar heat collection coil; 2. a condenser; 21. a first condenser; 211. a first housing; 212. a first heat exchange tube; 22. a second condenser; 221. a second housing; 222. a second heat exchange tube; 223. a third heat exchange tube; 3. a heat-using terminal;

4. a compressor; 5. an expansion valve; 6. a steam-water separator; 7. a liquid storage tank; 8. and (3) a filter.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 5, the present embodiment provides a coupled phase-change energy-storage heating apparatus, which includes an evaporator 1, a condenser 2, and a heat-consuming terminal 3, wherein the evaporator 1 is connected in series with the high-temperature side of the condenser 2 through a first pipe 10, a heat-exchanging medium flows through the first pipe 10, the heat-consuming terminal 3 is connected in series with the low-temperature side of the condenser 2 through a second pipe 20, and water flows through the second pipe 20. Specifically, condenser 2 includes first condenser 21 and second condenser 22, and the high temperature side of first condenser 21 and the high temperature side of second condenser 22 are through first pipeline 10 parallel communication, and the low temperature side of first condenser 21 and the low temperature side of second condenser 22 are through second pipeline 20 parallel communication, are provided with the energy storage unit in the second condenser 22, are provided with phase change energy storage material in the energy storage unit.

High temperature side through evaporimeter 1 and condenser 2 has heat transfer medium's first pipeline 10 series connection via inside circulation, and it has the second pipeline 20 of water and the low temperature side series connection intercommunication of condenser 2 to circulate with hot terminal 3 via inside for heat transfer medium is heated in evaporimeter 1 and is heated the back and get into in condenser 2 with the water heat transfer, and make the water intensification with heat transfer feedwater, and the water after the intensification gets into with hot terminal 3 with the user use, accomplishes the heating circulation. And the condenser 2 is formed by connecting the first condenser 21 and the second condenser 22 in parallel, and an energy storage unit is arranged in the second condenser 22, so that energy can be stored by the energy storage unit or heat can be supplied by the energy storage unit according to the requirement during heating. When the heat supplied by the evaporator 1 is larger than the heat required by the heat using terminal 3, the heat can be stored through the energy storage unit; when the heat supplied by the evaporator 1 is less than the heat required by the heat using terminal 3, the heat stored in the energy storage unit can be utilized to ensure the normal heat supply of the heat using terminal 3; when 1 inconvenient uses of evaporimeter, the heat of storing in the heat-retaining unit of exclusive use can improve this coupling phase change energy storage heating system's application scope, improves the practicality to guarantee under the multiple condition homoenergetic to 3 normal heat supplies of heat terminal. Under the structure, the energy-saving heat pump can be freely adjusted according to the external environment and the heat consumption, the energy is saved, the operation is simple, and the energy efficiency is higher.

Under the structure, because the heat exchange medium directly exchanges heat with the energy storage unit in the second condenser 22, the heat exchange of the intermediate-stage water is reduced, the energy efficiency can be improved by about 10 percent, and the comprehensive heating cost is saved by not less than 50 percent. Meanwhile, the condition that the phase-change material selection area is narrowed due to the existence of the supercooling degree is avoided, and more phase-change material selection modes can be provided. Optionally, the phase change material may be selected from phase change energy storage materials with different phase change points such as 41 ℃, 43 ℃, 47 ℃, 52 ℃ or 58 ℃ according to the difference of the heat terminal 3.

Optionally, the second condenser 22 may be configured with different volumes according to different heat terminals 3, and the energy storage unit in the second condenser 22 may be filled with different phase change energy storage materials to adapt to the heat consumption of different heat terminals 3, so as to improve the application range and the practicability of the coupled phase change energy storage heating apparatus.

Specifically, the phase change heating apparatus further includes a compressor 4 and an expansion valve 5, and the compressor 4 and the expansion valve 5 are communicated in the first pipe 10 and are respectively disposed at the outlet end and the inlet end of the heat exchange medium of the evaporator 1. The heat exchange medium absorbs heat in the evaporator 1, is gasified, then enters the compressor 4 to be heated and boosted to form high-temperature and high-pressure gas, then enters the condenser 2 along the first pipeline 10 to exchange heat with water and be liquefied, and the heat exchange medium which transfers heat to water and is liquefied enters the expansion valve 5 to be cooled and decompressed and then enters the evaporator 1 again to carry out the next circulation. Through the above process, heat supply to the heat using terminal 3 is realized.

Preferably, a steam-water separator 6 is further arranged in the first pipeline 10, the steam-water separator 6 is located between the compressor 4 and the evaporator 1, the heat exchange medium is subjected to gas-liquid separation before entering the compressor 4, damage caused by the fact that part of water vapor carried after the heat exchange medium is gasified enters the compressor 4 is avoided, and normal operation and service life of the compressor 4 and the whole heating device are improved.

Further preferably, a liquid storage tank 7 and a filter 8 are sequentially arranged in a first pipeline 10 between the condenser 2 and the expansion valve 5, the heat exchange medium enters the liquid storage tank 7 after being subjected to heat exchange, condensation and liquefaction in the condenser 2, the liquid storage tank 7 plays a role in buffering, the phenomenon that the flow of the liquefied heat exchange medium is heavy to cause burden is avoided, meanwhile, the liquid heat exchange medium is filtered by the filter 8 before entering the expansion valve 5, impurities are prevented from entering the filter 8 and even the evaporator 1, the compressor 4 and the like at the back, the operation safety and the reliability of the heating device are improved, and therefore the stability of heating is guaranteed.

Further, as shown in fig. 2, the first condenser 21 includes a first housing 211 and a first heat exchange tube 212, the first heat exchange tube 212 is disposed in the first housing 211, the first housing 211 is provided with a first water inlet and a first water outlet, which are communicated with the second pipeline 20, and two ends of the first heat exchange tube 212 respectively penetrate through the first housing 211 and are communicated with the first pipeline 10. High-temperature and high-pressure heat exchange media enter the first heat exchange tube 212 along the first pipeline 10, water in the second pipeline 20 enters the first shell 211 from the first water inlet, exchanges heat with the heat exchange media, is heated, flows out from the first water outlet, and finally flows to the heat utilization terminal 3. In other embodiments, the first shell 211 may also be provided with a first heat exchange medium inlet and a first heat exchange medium outlet which are communicated with the first pipeline 10, and two ends of the first heat exchange pipe 212 respectively penetrate through the first shell 211 and are communicated with the second pipeline 20. In heat transfer medium got into first casing 211 from first heat transfer medium import promptly, first heat exchange tube 212 internal flow water, heat transfer medium can wrap first heat exchange tube 212 completely for it is very fast that water is heated and heaies up, improves user experience.

Preferably, the first heat exchanging pipe 212 is provided in plurality, the plurality of first heat exchanging pipes 212 are arranged at intervals along the first direction and are sequentially communicated, and the first heat exchanging pipes 212 are arranged inside the first housing 211 to extend in a winding manner along the second direction. That is, inside the first heat exchange tube 212 occupies the first housing 211 in space, the heat exchange area is increased, so that the heat exchange medium and water can exchange heat sufficiently, and the heat exchange efficiency and the energy efficiency are improved. More preferably, the first heat exchange pipe 212 is provided at the outer circumference thereof with fins to enhance heat exchange, further improve heat exchange efficiency, and thus improve heating energy efficiency.

Further, as shown in fig. 3, the second condenser 22 includes a second casing 221 and a second heat exchange tube 222, the second heat exchange tube 222 is disposed in the second casing 221, the second casing 221 is provided with a second water inlet and a second water outlet which are communicated with the second pipeline 20, two ends of the second heat exchange tube 222 penetrate through the second casing 221 and are communicated with the first pipeline 10, and the energy storage unit is disposed on the periphery of the second heat exchange tube 222 and attached to the outer wall of the second heat exchange tube 222. The high-temperature and high-pressure heat exchange medium enters the second heat exchange tube 222 along the first pipeline 10, and water enters the second shell 221 from the second water inlet, exchanges heat with the heat exchange medium, is heated, flows out from the second water outlet, and finally flows to the heat utilization terminal 3. Meanwhile, in the process, the energy storage unit is attached to the outer wall of the second heat exchange tube 222, so that the heat of the heat exchange medium in the second heat exchange tube 222 can be absorbed for storage; if the second condenser 22 is not needed for heating, and only the second condenser 22 is needed for storing heat, the second water inlet and the second water outlet are closed, so that the heat of the heat exchange medium entering the second heat exchange tube 222 is stored in the energy storage unit; if only the heat in the energy storage unit needs to be used, the second water inlet and the second water outlet are opened, the second heat exchange tube 222 is disconnected, and the low-temperature water enters the second shell 221, exchanges heat with the energy storage unit, is heated, and then enters the heat utilization terminal 3. Specifically, the second condenser 22 further includes a third heat exchange tube 223, the third heat exchange tube 223 is sleeved outside the second heat exchange tube 222, and a phase change energy storage material is arranged between the third heat exchange tube 223 and the second heat exchange tube 222 to form an energy storage unit. When the heat exchange medium flows through the second heat exchange tube 222, the phase change energy storage material located between the tube wall of the second heat exchange tube 222 and the tube wall of the third heat exchange tube 223 can absorb heat of the heat exchange medium to store energy, that is, the phase change energy storage material can exchange heat with water in the second shell 221 and can exchange heat with the phase change energy storage material, so that heating and energy storage functions are realized.

In the process of absorbing heat in the heat exchange medium, the phase-change energy storage material is changed from a solid state to a liquid state to store the absorbed heat, namely, the absorbed heat is converted into latent heat to be stored; when the energy storage unit is needed for heating, the phase change energy storage material transfers heat to water, and in the process, the phase change energy storage material is changed from a liquid state to a solid state, namely, the phase change energy storage material is used for heating through latent heat. In the process, the sensible heat and the latent heat are used for storing and heating, so that the energy storage efficiency and the heating efficiency can be effectively improved, the energy is saved, and the energy efficiency is improved. Preferably, the two ends of the third heat exchange tube 223 extend out of the second shell 221, and the two ends of the third heat exchange tube 223 are respectively provided with a phase change energy storage material inlet and a phase change energy storage material outlet, so that the phase change energy storage material in the third heat exchange tube 223 can be conveniently replaced through the phase change energy storage material inlet and the phase change energy storage material outlet, and the energy storage rate of the phase change energy storage unit can be ensured. More preferably, heat preservation covers are arranged at the phase change energy storage material inlet and the phase change energy storage material outlet, and when the phase change energy storage material needs to be replaced, the heat preservation covers are opened, and the phase change energy storage material inlet and the phase change energy storage material outlet are communicated for replacement; the heat preservation cover can avoid heat loss in the phase change energy storage material, and the energy storage efficiency of the energy storage unit is improved.

In other embodiments, a second heat exchange medium inlet and a second heat exchange medium outlet which are communicated with the first pipeline 10 may be further formed in the second shell 221, two ends of the second heat exchange tube 222 respectively penetrate through the second shell 221 and are communicated with the second pipeline 20, the third heat exchange tube 223 is sleeved on the periphery of the second shell 221, and a phase change energy storage material is arranged between the third heat exchange tube 223 and the second heat exchange tube 222 to form an energy storage unit. That is, the heat exchange medium enters the second shell 221 from the second heat exchange medium inlet to exchange heat with the phase change energy storage material and the water in the second heat exchange tube 222, and the third heat exchange tube 223 can be completely wrapped by the heat exchange medium, so that the water and the phase change energy storage material are heated and heated quickly, and the user experience is improved.

Preferably, the second heat exchange tube 222 is coiled inside the second shell 221, so as to increase the heat exchange area, so that the heat exchange medium and water can exchange heat sufficiently, and the heat exchange efficiency and energy efficiency are improved.

Preferably, fins are provided at the outer circumference of the second heat exchange pipe 222 to improve heat exchange efficiency, thereby improving heating efficiency.

Referring again to fig. 1, in the present embodiment, the evaporator 1 includes a first evaporator 11 and a second evaporator 12, and the first evaporator 11 and the second evaporator 12 are in parallel communication through a first pipe 10. That is, the first evaporator 11 and the second evaporator 12 are used for heating the heat transfer medium, and the first evaporator 11 and the second evaporator 12 can be selectively opened or simultaneously opened, specifically opened or closed according to actual requirements.

Specifically, as shown in fig. 4, the first evaporator 11 includes an air heat collecting coil 111, the air heat collecting coil 111 is communicated in the first pipe 10, and a heat exchange medium circulating in the air heat collecting coil 111 can absorb heat in the air. When the outside air heat is higher, the heat transfer medium in the first evaporator 11 can absorb heat gasification from the air to provide heat for the heat using terminal 3, save the energy, obtain the clean high efficiency of the energy, and simple structure, the heat obtains the convenience.

Further specifically, as shown in fig. 5, the second evaporator 12 includes a housing 121 and a solar heat collecting coil 122, the solar heat collecting coil 122 is disposed in the housing 121, two ends of the solar heat collecting coil 122 respectively penetrate through the housing 121 and are communicated with the first pipeline 10, and a heat exchange medium circulating in the solar heat collecting coil 122 can absorb solar heat. Absorb solar thermal energy through solar energy collection pipe to with heat transfer to heat transfer medium, thereby for providing heat with hot terminal 3, the energy can be saved obtains the clean high efficiency of the energy, and simple structure, the heat obtains the convenience. Through first evaporimeter 11 and second evaporimeter 12, all acquire the heat from nature, both the environmental protection is high-efficient, can be suitable for multiple operating mode simultaneously. When the outside temperature is high but the sunlight is insufficient, the first evaporator 11 can be started to heat and store energy; when the outside temperature is not high but the sunlight is sufficient, the second evaporator 12 can be started to heat and store energy; when the external environment temperature is high and the sunlight is sufficient, the first evaporator 11 and the second evaporator 12 can be simultaneously started to heat and store energy. Under above-mentioned structure, can guarantee under multiple operating mode, realize the heating with hot terminal 3 through first evaporimeter 11, second evaporimeter 12 and energy storage unit, guarantee heating stability.

Preferably, the second evaporator 12 further comprises an insulation layer disposed between the housing 121 and the solar collecting coil 122. The solar energy utilization rate is improved, and the heat exchange efficiency is improved, so that the energy is saved, and the energy efficiency is improved.

Preferably, the coupled phase-change energy-storage heating device further comprises a plurality of valves, and the valves are respectively arranged at two ends of the first condenser 21, the second condenser 22, the first evaporator 11 and the second evaporator 12. The flow-through routes of the heat exchange medium and the water are controlled by controlling the opening and closing of different valves, so that the operation condition of the coupling phase change energy storage heating device is selected according to the external environment, the energy is saved, the energy efficiency is improved, and the heat stability of the heat utilization terminal 3 is ensured.

The operation process of the coupled phase-change energy-storage heating device provided by the embodiment is as follows:

when illumination is sufficient, only the two-end valves on the low-temperature side of the second condenser 22 are closed, the heat exchange medium absorbs heat from the air side in the first evaporator 11, the heat of solar energy is absorbed in the second evaporator 12, and then the heat exchange is performed between the high-temperature side of the first condenser 21 and the water on the low-temperature side, so that the temperature of the water on the low-temperature side is increased, and the water is used by the heating terminal 3, and meanwhile, the heat exchange medium exchanges heat with the energy storage unit on the high-temperature side of the second condenser 22, so that the energy storage unit stores heat.

When there is not illumination night, during valley electricity period promptly, close the both ends valve of the low temperature side of second condenser 22 and the both ends valve of second evaporimeter 12, heat transfer medium absorbs the heat from the air side in first evaporimeter 11, then the water heat transfer of high temperature side and low temperature side at first condenser 21 for the water of low temperature side heaies up, use for hot terminal 3, heat transfer medium exchanges with the energy storage unit in the high temperature side of second condenser 22 simultaneously, make the energy storage unit carry out heat storage.

When the illumination is insufficient in the daytime, only the valves at the two ends of the low-temperature side of the second condenser 22 are opened, and the low-temperature water absorbs the heat of the energy storage unit in the second condenser 22 to heat up, so that heating is realized.

In rainy days, only valves at two ends of the first evaporator 11 and valves at two ends of the low-temperature side and the high-temperature side of the first condenser 21 are opened, the heat exchange medium absorbs heat in the air in the first evaporator 11, then heat exchange is carried out between the high-temperature side of the first condenser 21 and water at the low-temperature side, and the low-temperature water absorbs heat and is used by the heat terminal 3 after being heated.

The coupling phase change energy storage heating device that this embodiment provided can select the most energy-conserving efficient operating condition according to external environment, and practicality and suitability are wider, and through the mode of two evaporimeter 1 and two condenser 2 system coupling phase change energy storage for evaporimeter 1 is long-time at energy-efficient district work, has subtracted the power cost at peak electricity moment. The method has very high economical efficiency for areas with good lighting conditions or areas with peak and valley electricity prices and needing heating.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. The coupling phase-change energy-storage heating device is characterized by comprising an evaporator (1), a condenser (2) and a heat utilization terminal (3), wherein the evaporator (1) is connected with the high-temperature side of the condenser (2) in series through a first pipeline (10), a heat exchange medium flows through the first pipeline (10), the heat utilization terminal (3) is connected with the low-temperature side of the condenser (2) in series through a second pipeline (20), and water flows through the second pipeline (20);

condenser (2) include first condenser (21) and second condenser (22), the high temperature side of first condenser (21) with the high temperature side of second condenser (22) passes through first pipeline (10) intercommunication that connects in parallel, the low temperature side of first condenser (21) with the low temperature side of second condenser (22) passes through second pipeline (20) intercommunication that connects in parallel, be provided with the energy storage unit in second condenser (22), be provided with phase change energy storage material in the energy storage unit.

2. The coupling phase-change energy-storage heating device according to claim 1, wherein the first condenser (21) comprises a first shell (211) and a first heat exchange pipe (212), the first heat exchange pipe (212) is arranged in the first shell (211), a first water inlet and a first water outlet which are communicated with the second pipeline (20) are formed in the first shell (211), and two ends of the first heat exchange pipe (212) respectively penetrate through the first shell (211) and are communicated with the first pipeline (10); or

A first heat exchange medium inlet and a first heat exchange medium outlet which are communicated with the first pipeline (10) are formed in the first shell (211), and two ends of the first heat exchange pipe (212) penetrate through the first shell (211) and are communicated with the second pipeline (20) respectively.

3. The coupling phase-change energy-storage heating device according to claim 1, wherein the second condenser (22) comprises a second shell (221) and a second heat exchange tube (222), the second heat exchange tube (222) is arranged in the second shell (221), a second water inlet and a second water outlet which are communicated with the second pipeline (20) are formed in the second shell (221), two ends of the second heat exchange tube (222) are respectively arranged through the second shell (221) and communicated with the first pipeline (10), and the energy storage unit is arranged on the periphery of the second heat exchange tube (222) and attached to the outer wall of the second heat exchange tube (222); or

A second heat exchange medium inlet and a second heat exchange medium outlet which are communicated with the first pipeline (10) are formed in the second shell (221), two ends of the second heat exchange pipe (222) penetrate through the second shell (221) respectively and are communicated with the second pipeline (20), and the energy storage unit is arranged on the periphery of the second heat exchange pipe (222) and attached to the outer wall of the second heat exchange pipe (222).

4. The coupled phase-change energy-storage heating device as claimed in claim 3, wherein the second condenser (22) further comprises a third heat exchange tube (223), the third heat exchange tube (223) is sleeved outside the second heat exchange tube (222), and the phase-change energy-storage material is arranged between the third heat exchange tube (223) and the second heat exchange tube (222) to form the energy-storage unit.

5. The coupled phase-change energy-storage heating device according to claim 1, wherein the evaporator (1) comprises a first evaporator (11) and a second evaporator (12), and the first evaporator (11) and the second evaporator (12) are communicated in parallel through the first pipe (10).

6. The coupled phase-change energy-storage heating device as claimed in claim 5, wherein the first evaporator (11) comprises an air heat-collecting coil (111), the air heat-collecting coil (111) is communicated with the first pipe (10), and the heat exchange medium circulating in the air heat-collecting coil (111) can absorb heat in the air.

7. The coupling phase-change energy-storage heating device as claimed in claim 5, wherein the second evaporator (12) comprises a housing (121) and a solar heat-collecting coil (122), the solar heat-collecting coil (122) is arranged in the housing (121), two ends of the solar heat-collecting coil (122) are respectively arranged in the housing (121) in a penetrating manner and communicated with the first pipeline (10), and the heat exchange medium circulating in the solar heat-collecting coil (122) can absorb heat in sunlight.

8. The coupled phase change energy-storage heating apparatus according to claim 7, wherein the second evaporator (12) further comprises an insulation layer disposed between the housing (121) and the solar heat collecting coil (122).

9. A coupled phase-change energy-storage heating device according to any one of claims 1-8, further comprising a compressor (4) and an expansion valve (5), wherein the compressor (4) and the expansion valve (5) are communicated with the first pipeline (10) and are respectively arranged at the heat exchange medium outlet end and the heat exchange medium inlet end of the evaporator (1).

10. The coupling phase-change energy-storage heating device according to claim 9, further comprising a steam-water separator (6), a liquid storage tank (7) and a filter (8), wherein the steam-water separator (6) is communicated with the first pipeline (10) and is disposed between the compressor (4) and the evaporator (1), and the liquid storage tank (7) and the filter (8) are both communicated with the first pipeline (10) and are sequentially disposed between the condenser (2) and the expansion valve (5).

Images