CN212566293U - Phase-change heat accumulating type water heater - Google Patents
Phase-change heat accumulating type water heater Download PDFInfo
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- CN212566293U CN212566293U CN202022081743.XU CN202022081743U CN212566293U CN 212566293 U CN212566293 U CN 212566293U CN 202022081743 U CN202022081743 U CN 202022081743U CN 212566293 U CN212566293 U CN 212566293U
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Abstract
The utility model provides a phase-change heat accumulating type water heater, which relates to the technical field of water heaters and comprises a compressor, a first heat exchange structure for exchanging heat with an external heat source, a second heat exchange structure and a third heat exchange structure for exchanging heat with a user demand end, a refrigerant loop for connecting the compressor and the three heat exchange structures, a switching component arranged on the refrigerant loop and a water loop connected with the second heat exchange structure; the third heat exchange structure has the triple functions of condensation, evaporation and heat storage; when the switching component is switched to different states, the refrigerant in the refrigerant loop flows in different directions or different flow paths, so that the first heat exchange structure, the second heat exchange structure and the third heat exchange structure participate in the heat exchange process in an alternative, two-selective or three-selective mode, and the function switching of the phase-change heat storage type water heater is realized. The utility model has the characteristics of use nimble changeable, energy-conserving, high-efficient, phase change material utilization efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of the water heater technique and specifically relates to a phase change heat accumulation formula water heater is related to.
Background
The air source heat pump water heater is widely popularized and applied due to the characteristics of energy conservation, environmental protection, safety and the like, but a water storage tank of the conventional air source heat pump water heater stores heat by using sensible heat of water, the heat storage density is low, the volume of the water tank is large, and the further popularization and application of the water tank are restricted.
The phase-change energy storage technology is to utilize phase-change material to absorb and release heat in the process of state change to achieve the purpose of transferring energy supply and demand in time and space. The phase-change energy storage technology is applied to the air source heat pump water heater, the latent heat of the phase-change material can be used for storing and releasing heat, and the phase-change heat storage water heater has the advantages of large energy storage density, small volume and stable heat release temperature due to the large heat storage density and stable phase-change temperature of the heat storage material.
The applicant has found that the prior art has at least the following technical problems:
at present, a phase change heat storage water heater adopts a mode that a refrigerant directly charges a heat storage material and the heat storage material releases heat to tap water, for example, in the patents with application numbers of 201710978187.6 and 201720777226.1, the refrigerant and water cannot share a heat exchanger pipeline, so that part of the heat exchanger pipeline in a heat accumulator flows away the refrigerant and part of the heat exchanger pipeline flows away water, the heat charging and discharging efficiency is reduced, and the system energy efficiency is influenced; meanwhile, the heat accumulator is used as a condenser when heat is charged, and water directly takes heat from the heat accumulation tank when heat is discharged, so that the phase change temperature of the heat accumulation material is limited to be not too high or too low, the phase change temperature is too high to cause the COP of heat charge to be reduced, and the phase change temperature is too low to cause the effective water taking amount to be too small.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a phase-change heat storage water heater to solve the problems of the prior art that the heat storage density of an air source heat pump water heater is small and the volume of a water tank is large; the heat accumulator of the phase-change heat accumulation water heater cannot be fully utilized, so that the charge and discharge efficiency is low and the system energy efficiency is low; the phase change temperature range of the heat storage material is too narrow, and the heat release efficiency is low.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a phase change heat accumulating type water heater, which comprises a compressor, a first heat exchange structure for exchanging heat with an external heat source, a second heat exchange structure and a third heat exchange structure for exchanging heat with a user demand end, a refrigerant loop for connecting the compressor and the three heat exchange structures, a switching component arranged on the refrigerant loop, and a water loop connected with the second heat exchange structure; the third heat exchange structure has the triple functions of condensation, evaporation and heat storage; when the switching component is switched to different states, the refrigerant in the refrigerant loop flows in different directions or different flow paths, so that the first heat exchange structure, the second heat exchange structure and the third heat exchange structure participate in a heat exchange process in a one-way, two-way or three-way mode, and the function switching of the phase-change heat storage type water heater is realized.
As a further improvement of the present invention, the first heat exchange structure includes a first heat exchanger installed outdoors to exchange heat with air.
As a further improvement of the present invention, the phase change heat storage type water heater has six functional modes.
As the utility model discloses a further improvement, six kinds of functional modes of phase change heat accumulation formula water heater include the heat-retaining mode of non-water demand, the exothermic water supply mode of single heat-retaining source, heat storage source and air source jointly supply water mode, single air source water supply mode, the exothermic defrosting mode of single heat-retaining source and single heat-retaining source cooling mode.
As a further improvement of the present invention, the third heat exchange structure comprises a heat storage box, a third heat exchanger in the heat storage box, and a heat storage material in the heat storage box, wherein the inlet and outlet ends of the third heat exchanger are connected to the refrigerant circuit.
As a further improvement of the present invention, the switching assembly includes a four-way valve, a first three-way valve, a second three-way valve and a third three-way valve, the four-way valve is disposed on the refrigerant circuit between the compressor and the three heat exchange structures, and the first three-way valve is disposed on the refrigerant circuit between the four-way valve, the first heat exchange structure and the third heat exchange structure; the third three-way valve is arranged on the refrigerant loop among the four-way valve, the second heat exchange structure and the third heat exchange structure; the second three-way valve is disposed on the refrigerant circuit between the third heat exchange structure, the second heat exchange structure, and the third three-way valve.
As a further improvement, the phase change heat storage type water heater is still including setting up the first throttling arrangement and the setting of first heat transfer structure one end are in the second throttling arrangement of second heat transfer structure one end.
As a further improvement of the utility model, the heat storage density of the heat storage material is not less than 160kJ/L, and the phase change temperature is 20-50 ℃.
As a further improvement of the present invention, the third heat exchanger has a Z-shaped pipe.
As a further improvement of the present invention, the third heat exchanger is a fin-tube heat exchanger, a spiral coil heat exchanger or a serpentine tube heat exchanger.
The utility model provides a phase change heat accumulation formula water heater carries out the application method of changes in temperature supply, including following step:
step 100: starting the phase-change heat storage type water heater, and switching the function modes according to the requirements of users;
step 200: when the heat storage mode is in a non-water-demand heat storage mode, a sliding valve of the four-way valve moves downwards, the C end and the S end of the four-way valve are communicated, the D end and the E end of the four-way valve are communicated, the first three-way valve is communicated with the first heat exchanger, the second three-way valve is communicated with the third heat exchanger, and the third three-way valve is communicated with the second three-way valve; refrigerant gas discharged from the compressor enters a D end of the four-way valve, passes through an E end of the four-way valve, a third three-way valve and a second three-way valve, enters a heat storage box, heats heat storage materials packaged in the heat storage box, the heat storage materials absorb heat and rise in temperature, the refrigerant turns into high-pressure low-temperature liquid after giving out heat, the high-pressure low-temperature liquid enters a first heat exchanger after being throttled and depressurized by a first throttling device, absorbs heat in air in the first heat exchanger to be evaporated, and then enters the compressor through the first three-way valve, a C end and an S end of the four-way valve to; after multiple heat charging cycles, when the temperature of the heat storage material reaches the target temperature, the whole heat charging process is completed;
step 300: when the heat storage and supply device is in a single heat storage source heat release and water supply mode, a slide valve of the four-way valve moves downwards, the end C of the four-way valve is communicated with the end S of the four-way valve, the end D of the four-way valve is communicated with the end E of the four-way valve, the first three-way valve is communicated with the third heat exchanger, the second three-way valve is communicated with the third heat exchanger, and the third three; refrigerant gas discharged from the compressor enters the end D of the four-way valve, passes through the end E of the four-way valve and the third three-way valve, enters the second heat exchanger, releases heat in the refrigerant, heats cold water to a target temperature for a user to use, is condensed and cooled, is throttled and depressurized by the second throttling device, enters the heat storage tank through the second three-way valve, absorbs heat in a heat storage material in the heat storage tank to be evaporated, then passes through the first three-way valve, the end C of the four-way valve and the end S of the four-way valve, enters the compressor, and completes a heat release cycle; after multiple heat release cycles, when the temperature of the heat storage material reaches the target temperature, the whole heat release process is completed;
step 400: when the water supply device is in a heat storage source and air source combined water supply mode, a sliding valve of the four-way valve moves downwards, the end C of the four-way valve is communicated with the end S of the four-way valve, the end D of the four-way valve is communicated with the end E of the four-way valve, the first three-way valve is communicated with the first heat exchanger, the second three-way valve is communicated with the third heat exchanger, the third three-way valve is communicated with the second heat exchanger, and the; refrigerant gas discharged from the compressor enters a D end of the four-way valve, passes through an E end of the four-way valve and a third three-way valve, enters a second heat exchanger, releases heat in the refrigerant, heats cold water to a target temperature for a user to use, is subjected to condensation cooling, is subjected to throttling and pressure reduction by a second throttling device, sequentially enters a heat storage tank, a first throttling device and a first heat exchanger through the second three-way valve, absorbs heat in a heat storage material in the heat storage tank, absorbs heat in air in the first heat exchanger to evaporate, then passes through the first three-way valve, a C end of the four-way valve and an S end, and enters the compressor to complete a heat release cycle; after multiple heat release cycles, when the temperature of the heat storage material reaches the target temperature, the whole heat release process is completed;
step 500: when the water supply device is in a single air source water supply mode, a slide valve of the four-way valve moves downwards, the end C of the four-way valve is communicated with the end S of the four-way valve, the end D of the four-way valve is communicated with the end E of the four-way valve, the first three-way valve is communicated with the first heat exchanger, the second three-way valve is communicated with the first heat exchanger, the third three-way valve is communicated with the second heat exchanger, and the first; refrigerant gas discharged from the compressor enters the end D of the four-way valve, passes through the end E of the four-way valve and the third three-way valve, enters the second heat exchanger, releases heat in the refrigerant, heats cold water to a target temperature for a user to use, is subjected to condensation cooling, is subjected to throttling and pressure reduction by the second throttling device, enters the first heat exchanger through the second three-way valve and the first throttling device, absorbs heat in air in the first heat exchanger to be evaporated, then passes through the first three-way valve, the end C of the four-way valve and the end S of the four-way valve, and enters the compressor to finish circulation;
step 600: when the defrosting mode is in a single heat storage source heat release defrosting mode, a sliding valve of the four-way valve moves upwards, the end E of the four-way valve is communicated with the end S of the four-way valve, the end D of the four-way valve is communicated with the end C of the four-way valve, the first three-way valve is communicated with the first heat exchanger, the second three-way valve is communicated with the third heat exchanger, and the third three-way valve is communicated with; refrigerant gas discharged from the compressor enters a D end of the four-way valve, passes through a C end of the four-way valve and a first three-way valve, enters a first heat exchanger, releases heat and defrosts in the refrigerant, enters a heat storage tank after being throttled and depressurized by a first throttling device, absorbs heat in a heat storage material in the heat storage tank, then enters the compressor through a second three-way valve, a third three-way valve, an E end of the four-way valve and an S end of the four-way valve, and completes circulation;
step 700: when the heat storage and cold supply device is in a single heat storage source cold supply mode, a slide valve of the four-way valve moves upwards, the E end and the S end of the four-way valve are communicated, the D end and the C end of the four-way valve are communicated, the first three-way valve is communicated with the third heat exchanger, the second three-way valve is communicated with the third heat exchanger, and the third three-way valve is communicated with the second heat exchanger; refrigerant gas discharged from the compressor enters the end D of the four-way valve, passes through the end C of the four-way valve and the first three-way valve, enters the heat storage tank, the heat storage material absorbs heat emitted by the refrigerant in the heat storage tank, then the refrigerant enters the second heat exchanger after being throttled and depressurized by the second three-way valve and the second throttling device, absorbs heat in water in the second heat exchanger to generate cold water suitable for users, and then enters the compressor through the third three-way valve, the end E of the four-way valve and the end S of the four-way valve to complete circulation.
Compared with the prior art, the utility model following beneficial effect has:
the utility model provides a phase change heat accumulating type water heater, which comprises a compressor, a first heat exchange structure for exchanging heat with an external heat source, a second heat exchange structure and a third heat exchange structure for exchanging heat with a user demand end, a refrigerant loop for connecting the compressor and the three heat exchange structures, a switching component arranged on the refrigerant loop, and a water loop connected with the second heat exchange structure; the third heat exchange structure has the triple functions of condensation, evaporation and heat storage; when the switching component is switched to different states, the refrigerant in the refrigerant loop flows in different directions or flow paths, so that the first heat exchange structure, the second heat exchange structure and the third heat exchange structure participate in a heat exchange process in a one-way, two-way or three-way mode, and the function switching of the phase-change heat storage type water heater is realized; the utility model discloses a third heat transfer structure also is exactly that the heat accumulator is as the condenser when filling heat, uses as the evaporator when releasing heat, can effectively reduce the phase transition temperature of heat accumulation material, improves heat-filling COP and release efficiency, has improved the utilization efficiency of phase transition material, makes phase transition material also can emit effective heat under the great condition of super-cooled rate; the utility model discloses a water heater has six kinds of functional mode, also has multiple heat filling and discharging mode promptly, can be nimble changeable, energy-conserving suitable for user's different water requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 these drawings without creative efforts.
Fig. 1 is a logic wiring diagram of the phase change heat storage type water heater of the invention;
fig. 2 is a line diagram of the phase change heat storage type water heater according to the present invention in the first operation mode;
fig. 3 is a line diagram of the phase change heat storage type water heater according to the present invention in the second operation mode;
fig. 4 is a line diagram of the phase change heat storage type water heater according to the present invention in the third operation mode;
fig. 5 is a line diagram of the phase change heat storage type water heater according to the present invention in the fourth operation mode;
fig. 6 is a line diagram of the phase change heat storage type water heater according to the present invention in the fifth operation mode;
fig. 7 is the line graph when the phase change heat storage type water heater of the utility model is in the sixth mode of operation.
FIG. 1, a compressor; 2. a first three-way valve; 3. a first heat exchanger; 4. a first throttling device; 5. a heat storage tank; 6. a heat storage material; 7. a second three-way valve; 8. a second throttling device; 9. a second heat exchanger; 10. a third three-way valve; 11. a C terminal; 12. an S end; 13. an E end; 14. and D end.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a phase change heat accumulating type water heater, which comprises a compressor 1, a first heat exchange structure for exchanging heat with an external heat source, a second heat exchange structure and a third heat exchange structure for exchanging heat with a user demand end, a refrigerant loop for connecting the compressor 1 and the three heat exchange structures, a switching component arranged on the refrigerant loop, and a water loop connected with the second heat exchange structure; the third heat exchange structure has the triple functions of condensation, evaporation and heat storage; when the switching component is switched to different states, the refrigerant in the refrigerant loop flows in different directions or different flow paths, so that the first heat exchange structure, the second heat exchange structure and the third heat exchange structure participate in the heat exchange process in an alternative, two-selective or three-selective mode, and the function switching of the phase-change heat storage type water heater is realized. It should be noted that the external heat source may be an air source, a ground source, or a water source. The following description will be made specifically by taking an external heat source as an air source.
The utility model discloses well heat accumulation material and water system separate each other, can prevent effectively that the heat accumulation material from leaking the water potential safety hazard problem that leads to. The utility model discloses the third heat transfer structure uses as the condenser when filling heat, and the third heat transfer structure uses as the evaporimeter when releasing heat in the well, can effectively reduce heat storage material phase transition temperature, improves and fills hot COP and release heat efficiency; when heat is released, the heat storage material in the heat storage box is used as a heat source, and the heat in the material can be extracted even if the heat release temperature is low, so that the requirement range of the supercooling degree of the material is wider, the material can normally extract heat after the repeated cycle performance is attenuated, the utilization efficiency of the phase change material is improved, and the service life is prolonged.
Specifically, the first heat exchange structure includes a first heat exchanger 3 installed outdoors to exchange heat with air.
The air source heat pump absorbs heat in the air and stores the heat in the heat storage material, and high-density heat storage is performed by utilizing the characteristic of large latent heat of the heat storage material, so that the heat storage box is smaller in volume and less in heat loss.
Through control switching assembly, make the refrigerant carry out the heat transfer through one of them, two or three heat transfer structure to make, phase change heat accumulation formula water heater has six kinds of functional mode.
Specifically, the six functional modes of the phase-change heat storage type water heater comprise a heat storage mode without water demand, a single heat storage source heat release water supply mode, a heat storage source and air source combined water supply mode, a single air source water supply mode, a single heat storage source heat release defrosting mode and a single heat storage source cold supply mode. Through switching of different modes, heat storage and cold energy supply can be realized, and comprehensive utilization of energy is realized; the heat storage tank or the air source heat pump can be used for supplying heat alone, and the heat storage tank or the air source heat pump can be used for supplying heat jointly.
The heat storage mode of the non-water demand absorbs heat in the air through the air source heat pump and stores the heat in the heat storage material, and the heat storage mode is suitable for the non-water situation of a user, particularly, the heat is charged during valley electricity, the heat is released during peak electricity in the daytime, the peak electricity shifting and valley filling of electric power can be achieved, the operation cost is reduced, and the electric power configuration is optimized. The single heat storage source heat release water supply mode extracts heat in the heat storage material and releases the heat to a user side for use, and is suitable for the condition that the user has hot water demand, particularly heat extraction at peak power; the heat storage source and air source combined water supply mode extracts heat in the heat storage material and releases the heat to a user side for use, and the heat storage device is suitable for the conditions that the hot water demand of the user side is high or the heat storage tank is insufficient in heat storage; the single air source water supply mode is suitable for the situation that the heat in the heat storage tank is completely released and the hot water is required on the user side; the single heat storage source heat release defrosting mode is suitable for the frosting condition of the first heat exchanger, and heat in the heat storage tank is extracted for defrosting; the single heat storage source cold supply mode is suitable for users with cold water requirements, extracts heat in water and stores the heat in the heat storage material, and can effectively improve the comprehensive utilization efficiency of energy.
As an optional embodiment of the present invention, the third heat exchange structure includes a heat storage box 5, a third heat exchanger disposed in the heat storage box 5, a heat storage material 6 filled in the heat storage box 5, and an inlet and an outlet of the third heat exchanger are connected to the refrigerant circuit. The utility model discloses a third heat exchanger only has one to advance pipe and an exit tube, and the heat accumulation incasement only has refrigerant system's pipeline process, and one set of pipe-line system of heat charging process and exothermic process sharing, heat storage material heat charge and heat release all be with the refrigerant exchange heat, can make full use of heat exchanger's heat transfer area, improve the charge and discharge efficiency of energy storage incasement, improve the system efficiency.
As an optional embodiment of the present invention, the switching component includes a four-way valve, a first three-way valve 2, a second three-way valve 7 and a third three-way valve 10, the four-way valve is disposed on the refrigerant loop between the compressor 1 and the three heat exchange structures, and the first three-way valve 2 is disposed on the refrigerant loop between the four-way valve, the first heat exchange structure and the third heat exchange structure; the third three-way valve 10 is arranged on a refrigerant loop among the four-way valve, the second heat exchange structure and the third heat exchange structure; the second three-way valve 7 is arranged on the refrigerant circuit between the third heat exchange structure, the second heat exchange structure and the third three-way valve 10.
Furthermore, the phase change heat storage type water heater also comprises a first throttling device 4 arranged at one end of the first heat exchange structure and a second throttling device 8 arranged at one end of the second heat exchange structure.
In order to improve the energy storage capacity and reduce the volume of the heat storage box 5, the heat storage density of the heat storage material 6 is not less than 160kJ/L, and the phase change temperature is 20-50 ℃. The phase change material with high phase change latent heat or the composite phase change material can be adopted. The utility model discloses an adopt the higher phase change material of phase transition latent heat, heat-retaining density is big, and the heat accumulator volume is compared traditional water tank littleer, and the heat loss is littleer.
In order to further improve the heat exchange effect, the space in the heat storage box 5 is fully utilized, and the pipeline of the third heat exchanger is arranged in a Z shape. By adopting the Z-shaped arrangement, the influence of reheating in the heat charging and discharging process can be effectively reduced, and the heat transfer efficiency is improved; the heat exchange water flows in a countercurrent mode, so that the heat exchange temperature difference is reduced, and the heat transfer efficiency is improved.
Furthermore, the third heat exchanger can adopt a fin tube type heat exchanger, a spiral coil type heat exchanger and a serpentine tube type heat exchanger, and can also adopt other types of heat exchangers, wherein refrigerant flows in the tubes, and heat storage materials are sealed on the outer sides of the tubes.
The utility model provides a phase change heat accumulation formula water heater carries out the application method of changes in temperature supply, including following step:
step 100: starting the phase-change heat storage type water heater, and switching the function modes according to the requirements of users;
step 200: as shown in fig. 2, when in the heat storage mode of non-water demand, the slide valve of the four-way valve moves downwards, the C end 11 and the S end 12 of the four-way valve are communicated, the D end 14 and the E end 13 of the four-way valve are communicated, the first three-way valve 2 is communicated with the first heat exchanger 3, the second three-way valve 7 is communicated with the third heat exchanger, and the third three-way valve 10 is communicated with the second three-way valve 7; refrigerant gas discharged from the compressor 1 enters a D end 14 of the four-way valve, passes through an E end 14 of the four-way valve, a third three-way valve 10 and a second three-way valve 7, enters a heat storage tank 5, heat storage materials 6 arranged in the heat storage tank 5 are heated and sealed, the heat storage materials 6 absorb heat and rise in temperature, the refrigerant turns into high-pressure low-temperature liquid after giving out heat, the high-pressure low-temperature liquid is throttled and decompressed by a first throttling device 4, enters a first heat exchanger 3, absorbs heat in air in the first throttling device to be evaporated, and then enters the compressor 1 through a first three-way valve 2, a C end 11 of the four-way valve and an S end 12; after multiple heat charging cycles, when the temperature of the heat storage material 6 reaches a target temperature (a certain value higher than the phase change temperature), the whole heat charging process is completed;
step 300: as shown in fig. 3, when in the single heat storage source heat release water supply mode, the slide valve of the four-way valve moves downwards, the C end 11 and the S end 12 of the four-way valve are communicated, the D end 14 and the E end 13 of the four-way valve are communicated, the first three-way valve 2 is communicated with the third heat exchanger, the second three-way valve 7 is communicated with the third heat exchanger, and the third three-way valve 10 is communicated with the second heat exchanger 9; refrigerant gas discharged from the compressor 1 enters a D end 14 of the four-way valve, passes through an E end 13 of the four-way valve and a third three-way valve 10, enters a second heat exchanger 9, releases heat in the refrigerant, heats cold water to a target temperature for a user to use, is condensed and cooled, is throttled and depressurized by a second throttling device 8, enters a heat storage tank 5 through a second three-way valve 7, absorbs heat in a heat storage material 6 in the heat storage tank to be evaporated, then passes through a first three-way valve 2, a C end 11 of the four-way valve and an S end 12 of the four-way valve, enters the compressor 1, and completes a heat release cycle; after a plurality of heat release cycles, when the temperature of the heat storage material reaches a target temperature (a certain value lower than the phase change temperature), the whole heat release process is completed;
step 400: as shown in fig. 4, when in the combined heat source and air source water supply mode, the four-way valve slide valve moves downwards, the C end 11 and the S end 12 of the four-way valve are communicated, the D end 14 and the E end 13 of the four-way valve are communicated, the first three-way valve 2 is communicated with the first heat exchanger 3, the second three-way valve 7 is communicated with the third heat exchanger, the third three-way valve 10 is communicated with the second heat exchanger 9, and the first throttling device 4 is opened to the maximum; refrigerant gas discharged from the compressor 1 enters a D end 14 of the four-way valve, passes through an E end 13 of the four-way valve and a third three-way valve 10, enters a second heat exchanger 9, releases heat in the refrigerant, heats cold water to a target temperature for a user to use, is subjected to condensation cooling, is subjected to throttling and pressure reduction by a second throttling device 8, sequentially enters a heat storage tank 5, a first throttling device 4 and a first heat exchanger 3 through a second three-way valve 7, absorbs heat in a heat storage material 6 in the heat storage tank 5, absorbs heat in air in the first heat exchanger 3 to evaporate, then enters the compressor 1 through a first three-way valve 2, a C end 11 of the four-way valve and an S end 12, and completes a heat release cycle; after a plurality of heat release cycles, when the temperature of the heat storage material 6 reaches a target temperature (a certain value lower than the phase change temperature), the whole heat release process is completed;
step 500: as shown in fig. 5, when in the single air source water supply mode, the four-way valve slide valve moves downwards, the C end 11 and the S end 12 of the four-way valve are communicated, the D end 14 and the E end 13 of the four-way valve are communicated, the first three-way valve 2 is communicated with the first heat exchanger 3, the second three-way valve 7 is communicated with the first heat exchanger 3, the third three-way valve 10 is communicated with the second heat exchanger 9, and the first throttling device 4 is opened to the maximum; refrigerant gas discharged from the compressor 1 enters a D end 14 of the four-way valve, passes through an E end 13 of the four-way valve and a third three-way valve 10, enters a second heat exchanger 9, releases heat in the refrigerant, heats cold water to a target temperature for a user to use, is subjected to condensation cooling, is subjected to throttling and pressure reduction by a second throttling device 8, enters a first heat exchanger 3 through a second three-way valve 7 and a first throttling device 4, absorbs heat in air in the first heat exchanger to be evaporated, then passes through a first three-way valve 2, a C end 11 of the four-way valve and an S end 12, and enters the compressor 1 to complete circulation;
step 600: as shown in fig. 6, when in the single heat storage source heat release defrosting mode, the four-way valve slide valve moves upwards, the E end 13 and the S end 12 of the four-way valve are communicated, the D end 14 and the C end 11 of the four-way valve are communicated, the first three-way valve 2 is communicated with the first heat exchanger 3, the second three-way valve 7 is communicated with the third heat exchanger, and the third three-way valve 10 is communicated with the second three-way valve 7; refrigerant gas discharged from the compressor 1 enters a D end 14 of the four-way valve, passes through a C end 11 of the four-way valve and a first three-way valve 2, enters a first heat exchanger 3, releases heat and defrosts in the refrigerant, is throttled and depressurized by a first throttling device 4, enters a heat storage tank 5, absorbs heat in a heat storage material 6, passes through a second three-way valve 7, a third three-way valve 10, an E end 13 of the four-way valve and an S end 12, enters the compressor 1, and completes circulation;
step 700: as shown in fig. 7, when in the single heat storage source cooling mode, the four-way valve slide valve moves up, the E end 13 and the S end 12 of the four-way valve are communicated, the D end 14 and the C end 11 of the four-way valve are communicated, the first three-way valve 2 is communicated with the third heat exchanger, the second three-way valve 7 is communicated with the third heat exchanger, and the third three-way valve 10 is communicated with the second heat exchanger 9; refrigerant gas discharged from the compressor 1 enters a D end 14 of the four-way valve, passes through a C end 11 of the four-way valve and a first three-way valve 2, enters a heat storage tank 5, a heat storage material 6 absorbs heat emitted by the refrigerant in the heat storage tank, then the refrigerant is throttled and depressurized by a second three-way valve 7 and a second throttling device 8, enters a second heat exchanger 9, absorbs heat in water to generate cold water suitable for users, and then enters the compressor 1 through a third three-way valve 10, an E end 13 of the four-way valve and an S end 12 to complete circulation.
The utility model provides a phase-change heat storage type water heater, which comprises a compressor, a first heat exchange structure for exchanging heat with an external heat source, a second heat exchange structure and a third heat exchange structure for exchanging heat with a user demand end, a refrigerant loop for connecting the compressor and the three heat exchange structures, a switching component arranged on the refrigerant loop, and a water loop connected with the second heat exchange structure; the third heat exchange structure has the triple functions of condensation, evaporation and heat storage; when the switching component is switched to different states, the refrigerant in the refrigerant loop flows in different directions or different flow paths, so that the first heat exchange structure, the second heat exchange structure and the third heat exchange structure participate in the heat exchange process in an alternative, alternative or alternative mode, and the function switching of the phase-change heat storage type water heater is realized; the utility model discloses a second heat exchange structure also is exactly that the heat accumulator is as the condenser when filling heat, uses as the evaporator when releasing heat, can effectively reduce the phase transition temperature of heat accumulation material, improves heat-filling COP and release efficiency, has improved the utilization efficiency of phase transition material, makes phase transition material also can emit effective heat under the great condition of super-cooled rate; the utility model discloses a water heater has six kinds of functional mode, also has multiple heat filling and discharging mode promptly, can be nimble changeable, energy-conserving suitable for user's different water requirements.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element 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.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The phase-change heat accumulating type water heater is characterized by comprising a compressor, a first heat exchange structure for exchanging heat with an external heat source, a second heat exchange structure and a third heat exchange structure for exchanging heat with a user demand end, a refrigerant loop for connecting the compressor and the three heat exchange structures, a switching assembly arranged on the refrigerant loop, and a water loop connected with the second heat exchange structure; the third heat exchange structure has the triple functions of condensation, evaporation and heat storage; when the switching component is switched to different states, the refrigerant in the refrigerant loop flows in different directions or different flow paths, so that the first heat exchange structure, the second heat exchange structure and the third heat exchange structure participate in a heat exchange process in a one-way, two-way or three-way mode, and the function switching of the phase-change heat storage type water heater is realized.
2. A phase change regenerative water heater as claimed in claim 1 wherein the first heat exchange structure includes a first heat exchanger installed outdoors to exchange heat with air.
3. A phase change regenerative water heater as claimed in claim 1 or 2, characterized in that it has six functional modes.
4. A phase change regenerative water heater as claimed in claim 3 wherein the six modes of operation of the phase change regenerative water heater include a non-water demand heat storage mode, a single heat storage source heat release water supply mode, a combined heat storage source and air source water supply mode, a single heat storage source heat release defrost mode and a single heat storage source cold supply mode.
5. A phase change regenerative water heater according to claim 1, wherein the third heat exchange structure includes a heat storage tank, a third heat exchanger disposed in the heat storage tank, and a heat storage material filled in the heat storage tank, and an inlet and outlet end of the third heat exchanger is connected to the refrigerant circuit.
6. A phase change regenerative water heater as claimed in claim 1 wherein said switching assembly includes a four-way valve disposed on said refrigerant circuit between said compressor and three heat exchange structures, a first three-way valve disposed on said refrigerant circuit between said four-way valve, said first heat exchange structure and said third heat exchange structure; the third three-way valve is arranged on the refrigerant loop among the four-way valve, the second heat exchange structure and the third heat exchange structure; the second three-way valve is disposed on the refrigerant circuit between the third heat exchange structure, the second heat exchange structure, and the third three-way valve.
7. A phase change regenerative water heater as claimed in claim 6 further comprising a first throttling means disposed at one end of the first heat exchange structure and a second throttling means disposed at one end of the second heat exchange structure.
8. A phase change regenerative water heater as claimed in claim 5 wherein the heat storage material has a heat storage density of not less than 160kJ/L and a phase change temperature of 20-50 ℃.
9. A phase change regenerative water heater as claimed in claim 5 wherein the third heat exchanger has a zigzag line.
10. The phase change regenerative water heater of claim 5, wherein the third heat exchanger is a finned tube heat exchanger, a spiral coil heat exchanger, or a serpentine tube heat exchanger.
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| CN202022081743.XU CN212566293U (en) | 2020-09-21 | 2020-09-21 | Phase-change heat accumulating type water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082270A (en) * | 2020-09-21 | 2020-12-15 | 珠海格力电器股份有限公司 | Phase-change heat accumulating type water heater and using method thereof |
| CN112082270B (en) * | 2020-09-21 | 2024-05-31 | 珠海格力电器股份有限公司 | Phase-change heat accumulating type water heater and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082270A (en) * | 2020-09-21 | 2020-12-15 | 珠海格力电器股份有限公司 | Phase-change heat accumulating type water heater and using method thereof |
| CN112082270B (en) * | 2020-09-21 | 2024-05-31 | 珠海格力电器股份有限公司 | Phase-change heat accumulating type water heater and use method thereof |
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