CN113237245A - Photovoltaic phase change energy storage cascade heat pump - Google Patents
Photovoltaic phase change energy storage cascade heat pump Download PDFInfo
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- CN113237245A CN113237245A CN202110591204.7A CN202110591204A CN113237245A CN 113237245 A CN113237245 A CN 113237245A CN 202110591204 A CN202110591204 A CN 202110591204A CN 113237245 A CN113237245 A CN 113237245A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/20—Arrangements for moving or orienting solar heat collector modules for linear movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
- F24S80/65—Thermal insulation characterised by the material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Photovoltaic Devices (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
Abstract
The invention discloses a photovoltaic phase-change energy-storage cascade heat pump which comprises a cascade heat pump main body and a photovoltaic heat collector, wherein the photovoltaic heat collector is arranged on the top surface of the cascade heat pump main body, an energy storage box is fixedly arranged in front of the front vertical surface of the cascade heat pump main body, an energy storage pipe is arranged in the energy storage box, a heat exchange pipe is arranged on the surface of the energy storage pipe in a surrounding mode, the heat exchange pipe is attached to the energy storage pipe, phase-change energy storage materials are contained in the energy storage pipe, an inlet pipe is connected to one side of the cascade heat pump main body in a penetrating mode, an outlet pipe is connected to one side of the inlet pipe in a penetrating mode, a water outlet end of the photovoltaic heat collector is connected in a penetrating mode, and the other end of the water outlet pipe is connected with a first connecting hose in a flange mode. Has the advantages that: according to the invention, sufficient illumination in the daytime is utilized to store heat energy, and at night, the precooled water is heated through the heat radiation of the phase-change energy storage material, so that the electric heating workload of the cascade heat pump main body is reduced, the energy consumption is reduced, the utilization rate of solar energy is greatly improved, and the cascade heat pump is more environment-friendly.
Description
Technical Field
The invention relates to the technical field of energy-saving heat pumps, in particular to a photovoltaic phase-change energy-storage cascade heat pump.
Background
The heat pump technology is a new energy technology which is paid much attention in the world in recent years, a pump is a mechanical device which can improve potential energy, for example, a water pump mainly pumps water from a low level to a high level, and a heat pump is a device which can obtain low level heat energy from air, water or soil in the nature and provide high level heat energy which can be used by people through electric energy to do work.
The heat pumps are various in types, including a cascade heat pump, the energy utilization efficiency is higher, the heat pumps are matched with a photovoltaic heat collector for use, the heat pumps are more energy-saving and environment-friendly, but the photovoltaic heat collector is high in efficiency of heating water when the sunlight is sufficient in daytime, the efficiency of heating water is low when the sunlight is at night, the heat pumps are mainly heated by the cascade heat pump in an electric heating mode at night, the electricity is consumed, the residual heat energy in daytime cannot be stored for use, a large amount of energy is wasted, the energy-saving performance can be further improved, meanwhile, the photovoltaic heat collector is installed outdoors, the wind area is large, the wind resistance is weak, once the strong wind is blown up outdoors, the photovoltaic heat collector has the risk of damage, the service life is shortened, the safety is not high enough, in addition, the energy storage columns are installed inside the photovoltaic heat collector at the current stage, the replacement and maintenance are inconvenient, and the universality is not strong, the installation and the disassembly are troublesome, and the improvement can be further made.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a photovoltaic phase-change energy-storage cascade heat pump which has the advantages of improving the utilization efficiency of heat energy, being more environment-friendly, long in service life, convenient to install, dismantle and maintain and strong in universality, and further solves the problems in the background art.
(II) technical scheme
In order to realize the advantages of improving the heat energy utilization efficiency, environmental protection, long service life, convenient assembly and disassembly and maintenance and strong universality, the invention adopts the following specific technical scheme:
a photovoltaic phase change energy storage cascade heat pump comprises a cascade heat pump main body and a photovoltaic heat collector, wherein the photovoltaic heat collector is arranged on the top surface of the cascade heat pump main body, an energy storage box is fixedly arranged in front of the front vertical surface of the cascade heat pump main body, an energy storage pipe is arranged in the energy storage box, a heat exchange pipe is wound on the surface of the energy storage pipe, the heat exchange pipe is attached to the energy storage pipe, phase change energy storage materials are contained in the energy storage pipe, one side of the cascade heat pump main body is connected with an inlet pipe in a penetrating way, one side of the inlet pipe is connected with an outlet pipe in a penetrating way, the water outlet end of the photovoltaic heat collector is connected with a water outlet pipe in a penetrating way, the other end of the water outlet pipe is connected with a first connecting hose in a flange way, the other end of the first connecting hose is communicated with a small circulating pump, the water outlet end of the small circulating pump is connected with a water pipe in a penetrating way, the other end of the water pipe is connected with the heat exchange pipe in a penetrating way, and the water pipe is connected with the inlet pipe through a tee joint, the photovoltaic heat collector is characterized in that a second electromagnetic valve is installed at the other end of the water delivery pipe, a first electromagnetic valve is installed on the surface of the water inlet pipe, the water inlet end of the photovoltaic heat collector is connected with a water feeding pipe in a penetrating mode, a second connecting hose is connected to the other end of the water feeding pipe in a flange mode, a connecting pipe is connected to the other end of the second connecting hose in a flange mode, a one-way valve is installed on the surface of the connecting pipe, and a water replenishing pipe is connected to the connecting pipe in a penetrating mode through a tee.
Further, overlapping formula heat pump main part top surface other end fixed mounting has the mounting panel, and mounting panel one side fixed surface installs screw rod lift to screw rod lift output installs the screw rod, the spout has been seted up to photovoltaic heat collector's base bottom surface, and the inside sliding connection of spout has the slider, the screw rod runs through the mounting panel, and screw rod other end fixedly connected with ball seat to the inside roll connection of ball seat has the spin, spin skin weld has the connecting rod, and the connecting rod other end and slider outer wall fixed connection, the base bottom surface one end of photovoltaic heat collector is passed through the hinge and is articulated with overlapping formula heat pump main part.
Furthermore, the top surface of the energy storage box is fixedly connected with an upper cover through screws, and two ends of the energy storage pipe are spirally connected with end covers.
Further, the water storage tank internally mounted of photovoltaic heat collector has temperature controller, and temperature controller output and first solenoid valve, second solenoid valve and small-size circulating pump input electric connection.
Further, the energy storage pipe equidistance is provided with a plurality ofly, energy storage incasement wall and upper cover inner wall are pasted and are had aerogel insulation material.
Furthermore, the heat exchange tube is made of a thin-wall copper tube, and the energy storage tube is made of a thin-wall copper tube.
Furthermore, the cross sections of the sliding block and the sliding groove are both in a convex shape, and the sliding block is subjected to polishing treatment.
Furthermore, a ball groove for rolling the ball is formed in the ball seat, the depth of the ball groove is larger than the diameter of the ball, and the diameter of the ball groove is equal to the diameter of the ball.
Furthermore, the first connecting hose and the second connecting hose are both metal braided tubes, and the lengths of the first connecting hose and the second connecting hose are both larger than 50 cm.
Furthermore, supporting legs are installed at the corners of the bottom surface of the energy storage tank, and the bottom surfaces of the supporting legs and the bottom surface of the cascade heat pump main body are located on the same installation surface.
(III) advantageous effects
Compared with the prior art, the invention provides a photovoltaic phase change energy storage cascade heat pump, which has the following beneficial effects:
(1) the invention adopts a photovoltaic heat collector and an energy storage box, when the sunshine is sufficient in daytime, hot water in the photovoltaic heat collector is pumped into a water delivery pipe through a small circulating pump, enters a heat exchange pipe through the water delivery pipe, transfers heat in the hot water to the energy storage pipe through heat conduction, transfers the heat to a phase-change energy storage material through the energy storage pipe through heat conduction, completes heat transfer and storage, returns the hot water which completes heat transfer and storage through a connecting pipe, enters the photovoltaic heat collector through a water feeding pipe, completes circulating heating, completes multiple circulating transfer and energy storage through pumping of the small circulating pump, converts solar energy collected by the photovoltaic heat collector into heat energy to be stored in the phase-change energy storage material, at the moment, a first electromagnetic valve is closed, a second electromagnetic valve is opened, and when the temperature of the phase-change energy storage material is saturated, the second electromagnetic valve is closed, the first electromagnetic valve is opened, and the hot water enters a heat insulation water tank in a cascade type main body of a compound heat pump for storage, when the temperature is low at night and hot water is needed, firstly, the hot water in a heat preservation water tank in the main body of the cascade heat pump is used, at the moment, a first electromagnetic valve is closed, a second electromagnetic valve is opened, meanwhile, a water supplementing pipe supplements cold water, the cold water enters a photovoltaic heat collector along a second connecting hose, the cold water enters a first connecting hose through the photovoltaic heat collector, the cold water enters a water conveying pipe through the first connecting hose and then enters a heat exchange pipe, the heat exchange pipe is contacted with an energy storage pipe for heat exchange, heat in a phase change energy storage material is transferred to the cold water, the cold water is preheated, the cold water is circulated and preheated, after the cold water is preheated to a certain temperature, the second electromagnetic valve is closed, the first electromagnetic valve is opened, the preheated cold water enters a water tank in the main body of the cascade heat pump through an inlet pipe, the cold water is electrically heated and then conveyed to a user, and the heat energy is stored by utilizing sufficient illumination in the daytime, at night, the precooled water is heated through the heat radiation of the phase-change energy storage material, so that the workload of electric heating of the cascade heat pump main body is reduced, the energy consumption is reduced, the utilization rate of solar energy is greatly improved, and the heat pump is more environment-friendly.
(2) According to the photovoltaic heat collector, the screw rod lifter, the screw rod and the sliding block are adopted, when weather is severe and outdoor wind power is large, a worker can start the screw rod lifter to drive the screw rod to move outwards, the screw rod moves outwards to pull the photovoltaic heat collector to fold downwards along the hinge, and meanwhile, the sliding block is driven to move, so that the wind area of the photovoltaic heat collector is reduced, the damage of strong wind to the photovoltaic heat collector is reduced, the capability of the device for resisting the strong wind weather is improved, the effect of protecting the device is achieved, unnecessary loss is reduced, and the service life is prolonged.
(3) The invention adopts the energy storage box and the energy storage pipe, the worker can open the upper cover, pull out the energy storage pipe upwards, and rotate to take off the end cover, so that the phase change energy storage material in the energy storage pipe can be replaced, the replacement and the maintenance can be completed, and the invention is more convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a photovoltaic phase change energy storage cascade heat pump according to an embodiment of the invention;
figure 2 is a front view of a photovoltaic phase change energy storage cascade heat pump according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of an energy storage tank according to an embodiment of the present invention;
FIG. 4 is a top view of the interior of an energy storage tank according to an embodiment of the invention;
figure 5 is a schematic view of a connection of a photovoltaic thermal collector and a cascade heat pump body according to an embodiment of the invention;
FIG. 6 is a schematic view of the connection of a photovoltaic thermal collector and a slider according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a construction of an accumulator tube according to an embodiment of the invention;
fig. 8 is a schematic structural view of a ball seat according to an embodiment of the present invention.
In the figure:
1. a cascade heat pump main body; 2. a photovoltaic heat collector; 3. a water outlet pipe; 4. a first connecting hose; 5. a small-sized circulation pump; 6. a tee joint; 7. feeding a pipe; 8. a first solenoid valve; 9. a water delivery pipe; 10. discharging a pipe; 11. a second solenoid valve; 12. an energy storage tank; 13. an upper cover; 14. a water feeding pipe; 15. a second connecting hose; 16. a connecting pipe; 17. a water replenishing pipe; 18. a one-way valve; 19. an energy storage tube; 20. a heat exchange pipe; 21. mounting a plate; 22. a screw elevator; 23. a screw; 24. a ball seat; 25. rolling a ball; 26. a connecting rod; 27. a slider; 28. a hinge; 29. a chute; 30. an end cap; 31. and (3) a phase-change energy storage material.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to an embodiment of the invention, a photovoltaic phase change energy storage cascade heat pump is provided.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, as shown in fig. 1 to 8, a photovoltaic phase change energy storage cascade heat pump according to an embodiment of the present invention includes a cascade heat pump main body 1 and a photovoltaic heat collector 2, the photovoltaic heat collector 2 is mounted on a top surface of the cascade heat pump main body 1, which are common devices, and will not be described herein in detail, an energy storage tank 12 is fixedly mounted in front of a front vertical surface of the cascade heat pump main body 1, an energy storage tube 19 is mounted inside the energy storage tank 12, a heat exchange tube 20 is wound around a surface of the energy storage tube 19, the heat exchange tube 20 is attached to the energy storage tube 19, so as to facilitate heat conduction, a phase change energy storage material 31 is contained inside the energy storage tube 19, which is common material, and will not be described herein in detail, an inlet tube 7 is connected to one side of the cascade heat pump main body 1 in a penetrating manner, an outlet tube 10 is connected to one side of the inlet tube 7 in a penetrating manner, and the outlet tube 10 is connected to a domestic hot water device, the water outlet end of the photovoltaic heat collector 2 is connected with a water outlet pipe 3 in a through way, the other end of the water outlet pipe 3 is connected with a first connecting hose 4 in a flange way, the other end of the first connecting hose 4 is communicated with a small circulating pump 5, the water outlet end of the small circulating pump 5 is connected with a water delivery pipe 9 in a through way, the other end of the water delivery pipe 9 is connected with an inlet pipe 7 in a through way through a tee joint 6, the other end of the water delivery pipe 9 is provided with a second electromagnetic valve 11, the surface of the inlet pipe 7 is provided with a first electromagnetic valve 8, the water inlet end of the photovoltaic heat collector 2 is connected with a water feeding pipe 14 in a through way, the other end of the water feeding pipe 14 is connected with a second connecting hose 15 in a flange way, the other end of the second connecting hose 15 is connected with a connecting pipe 16 in a flange way, the surface of the connecting pipe 16 is provided with a one-way valve 18 to prevent cold water from flowing back into the heat exchange pipe 20, the connecting pipe 16 is connected with a water replenishing pipe 17 in a through way through the tee joint 6, the water replenishing pipe 17 is connected with a cold water source, wherein a temperature controller is installed inside a water storage tank of the photovoltaic heat collector 2, the output end of the temperature controller is electrically connected with the input ends of the first electromagnetic valve 8, the second electromagnetic valve 11 and the small-sized circulating pump 5, the temperature controller is a common temperature control structure and is not described in detail herein, when sunlight is sufficient in daytime, hot water in the photovoltaic heat collector 2 is pumped into the water delivery pipe 9 through the small-sized circulating pump 5, enters the heat exchange pipe 20 through the water delivery pipe 9, heat in the hot water is transferred to the energy storage pipe 19 through heat conduction, the energy storage pipe 19 transfers heat to the phase change energy storage material 31 through heat conduction, heat transfer storage is completed, hot water which is subjected to heat transfer storage flows back through the connecting pipe 16, enters the photovoltaic heat collector 2 through the water feeding pipe 14, circulation heating is completed, and multiple times of circulation transfer energy storage are completed through pumping of the small-sized circulating pump 5, so as to convert solar energy collected by the photovoltaic heat collector 2 into heat energy to be stored in the phase-change energy storage material 31, at the moment, the first electromagnetic valve 8 is closed, the second electromagnetic valve 11 is opened, when the phase-change energy storage material is saturated in temperature, the water temperature in the photovoltaic heat collector 2 is not reduced, the second electromagnetic valve 11 is closed, the first electromagnetic valve 8 is opened, hot water enters the heat-preservation water tank in the cascade heat pump main body 1 to be stored, when the temperature is low at night and hot water is needed, the hot water in the heat-preservation water tank in the cascade heat pump main body 1 is firstly used, at the moment, the controller of the cascade heat pump main body 1 controls the first electromagnetic valve 8 to be closed, the second electromagnetic valve 11 is opened, meanwhile, the water replenishing pipe 17 replenishes cold water, the cold water enters the photovoltaic heat collector 2 along the second connecting hose 15, enters the first connecting hose 4 through the photovoltaic heat collector 2, and enters the water conveying pipe 9 through the first connecting hose 4, thereby in entering into heat exchange tube 20, heat exchange tube 20 and energy storage tube 19 contact carry out the heat transfer, heat transfer in the phase change energy storage material 31 is for cold water, thereby preheat cold water, the cold water circulation preheats, preheat to behind the uniform temperature, second solenoid valve 11 closes, first solenoid valve 8 opens, cold water through preheating enters into the inside water tank of overlapping formula heat pump main part 1 through advancing pipe 7, carry for the user after the electrical heating, store heat energy through utilizing daytime sufficient illumination, when night, heat radiation through phase change energy storage material 31 is precooling water heating, the work load of overlapping formula heat pump main part 1 with electric heating has been reduced, thereby energy consumption has been reduced, solar energy's utilization ratio has been improved greatly, environmental protection more.
In one embodiment, the other end of the top surface of the cascade heat pump main body 1 is fixedly provided with a mounting plate 21, the mounting plate 21 is installed obliquely, and one side surface of the mounting plate 21 is fixedly provided with a screw lifter 22, and the output end of the screw lifter 22 is provided with a screw 23, which is a common device and not described in more detail herein, the bottom surface of the base of the photovoltaic heat collector 2 is provided with a chute 29, and a slide block 27 is slidably connected inside the chute 29, the screw 23 penetrates through the mounting plate 21, and the other end of the screw 23 is fixedly connected with a ball seat 24, and a ball 25 is rotatably connected inside the ball seat 24, a connecting rod 26 is welded on the surface of the ball 25, and the other end of the connecting rod 26 is fixedly connected with the outer wall of the slide block 27, one end of the bottom surface of the base of the photovoltaic heat collector 2 is hinged with the cascade heat pump main body 1 through a hinge 28, when the weather is bad, and the outdoor wind is large, a worker can start the screw lifter 22 to drive the screw 23 to move outwards, thereby screw 23 outwards removes pulling photovoltaic heat collector 2 and folds along hinge 28 downwards, drives slider 27 simultaneously and removes, reduces photovoltaic heat collector 2's area that receives the wind to reduce the damage of strong wind to photovoltaic heat collector 2, improve equipment resists the ability of strong wind weather, thereby played the effect of protective apparatus, reduced unnecessary loss, increase of service life.
In one embodiment, the top surface of the energy storage box 12 is fixedly connected with the upper cover 13 through screws, the two ends of the energy storage tube 19 are spirally connected with the end covers 30, an operator can open the upper cover 13, the energy storage tube 19 is upwards extracted, and the end covers 30 are rotated and taken down, so that the phase change energy storage material 31 in the energy storage tube 19 can be replaced, replacement and maintenance are completed, and the solar heat collector is more convenient.
In one embodiment, the energy storage pipes 19 are arranged at equal intervals, and aerogel thermal insulation materials are adhered to the inner wall of the energy storage box 12 and the inner wall of the upper cover 13, so that heat loss is reduced, and thermal insulation efficiency is improved.
In one embodiment, the heat exchange tube 20 is made of a thin-wall copper tube, and the energy storage tube 19 is made of a thin-wall copper tube, so that the heat conduction efficiency is higher, and the heat exchange is faster.
In one embodiment, the cross sections of the sliding block 27 and the sliding groove 29 are convex, so that the sliding block 27 is prevented from falling off, and the sliding block 27 is polished to facilitate the movement of the sliding block 27.
In one embodiment, a ball groove for rolling the ball 25 is formed in the ball seat 24, the depth of the ball groove is greater than the diameter of the ball 25, the diameter of the ball groove is equal to the diameter of the ball 25, the ball 25 is prevented from falling off, the screw 23 rotates to drive the ball seat 24 to rotate, the ball seat 24 and the ball 25 rotate relatively, and the screw 23 is prevented from moving.
In one embodiment, the first connection hose 4 and the second connection hose 15 are both made of metal braided tubes, and the lengths of the first connection hose 4 and the second connection hose 15 are both greater than 50cm, which does not affect the folding of the overlapping heat pump main body 1.
In one embodiment, the bottom corners of the energy storage tank 12 are provided with the support legs, and the bottom surfaces of the support legs and the bottom surface of the overlapping heat pump body 1 are located on the same installation surface, so that the arrangement and installation are convenient.
The working principle is as follows:
when the sunlight is sufficient in daytime, hot water in the photovoltaic heat collector 2 is pumped into the water delivery pipe 9 through the small-sized circulating pump 5, enters the heat exchange pipe 20 through the water delivery pipe 9, heat in the hot water is transferred to the energy storage pipe 19 through heat conduction, the energy storage pipe 19 transfers the heat to the phase-change energy storage material 31 through heat conduction, heat transfer and storage are completed, the hot water after heat transfer and storage flows back through the connecting pipe 16, enters the photovoltaic heat collector 2 through the water feeding pipe 14, circular heating is completed, meanwhile, multiple times of circular transfer and energy storage are completed through pumping of the small-sized circulating pump 5, so that solar energy collected by the photovoltaic heat collector 2 is converted into heat energy which is stored in the phase-change energy storage material 31, at the moment, the first electromagnetic valve 8 is closed, the second electromagnetic valve 11 is opened, when the temperature of the phase-change energy storage material is saturated, the water temperature in the photovoltaic heat collector 2 is not reduced any more, the second electromagnetic valve 11 is closed, the first electromagnetic valve 8 is opened, hot water enters the heat preservation water tank in the cascade heat pump main body 1 to be stored, when the temperature is low at night and hot water is needed, the hot water in the heat preservation water tank in the cascade heat pump main body 1 is used firstly, at the moment, the controller of the cascade heat pump main body 1 controls the first electromagnetic valve 8 to be closed, the second electromagnetic valve 11 is opened, meanwhile, the water supplementing pipe 17 supplements cold water, the cold water enters the photovoltaic heat collector 2 along the second connecting hose 15, enters the first connecting hose 4 through the photovoltaic heat collector 2 and enters the water conveying pipe 9 through the first connecting hose 4, and then enters the heat exchanging pipe 20, the heat exchanging pipe 20 is in contact with the energy storage pipe 19 to exchange heat, heat in the phase change energy storage material 31 is transferred to the cold water, the cold water is preheated, the cold water is circularly preheated, after the cold water is preheated to a certain temperature, the second electromagnetic valve 11 is closed, the first electromagnetic valve 8 is opened, preheated cold water enters the water tank in the cascade heat pump main body 1 through the inlet pipe 7, is electrically heated and then is conveyed to a user, heat energy is stored by utilizing sufficient illumination in the daytime, at night, the precooled water is heated through the heat radiation of the phase change energy storage material 31, the workload of the cascade heat pump main body 1 for electric heating is reduced, so that the energy consumption is reduced, the utilization rate of solar energy is greatly improved, the environment is more environment-friendly, meanwhile, when the weather is severe and outdoor wind power is high, a worker can start the screw rod lifter 22 to drive the screw rod 23 to move outwards, the screw rod 23 moves outwards to pull the photovoltaic heat collector 2 to fold downwards along the hinge 28, and simultaneously drive the slide block 27 to move, the wind area of the photovoltaic heat collector 2 is reduced, the damage of strong wind to the photovoltaic heat collector 2 is reduced, and the capability of the device for resisting the strong wind weather is improved, thereby the effect of protective apparatus has been played, reduce the unnecessary loss, increase of service life, in addition, the staff can open upper cover 13, energy storage pipe 19 upwards extracts, and rotate and take off end cover 30, can change the phase transition energy storage material 31 in the energy storage pipe 19, accomplish to change and maintain, and is more convenient, and simultaneously, the staff only need put energy storage case 12, install photovoltaic heat collector 2 and connect the pipeline can accomplish with overlapping formula heat pump main part 1's installation, the repacking is with low costs, be suitable for and the heat pump use of multiple model, and the commonality is stronger, it is more convenient to install and tear open.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The photovoltaic phase change energy storage cascade heat pump is characterized by comprising a cascade heat pump main body (1) and a photovoltaic heat collector (2), wherein the photovoltaic heat collector (2) is installed on the top surface of the cascade heat pump main body (1), an energy storage box (12) is fixedly installed in front of the front vertical surface of the cascade heat pump main body (1), an energy storage pipe (19) is installed inside the energy storage box (12), a heat exchange pipe (20) is wound on the surface of the energy storage pipe (19), the heat exchange pipe (20) is attached to the energy storage pipe (19), a phase change energy storage material (31) is contained inside the energy storage pipe (19), an inlet pipe (7) is connected to one side of the cascade heat pump main body (1) in a penetrating manner, an outlet pipe (10) is connected to one side of the inlet pipe (7) in a penetrating manner, a water outlet pipe (3) is connected to the water outlet end of the photovoltaic heat collector (2) in a penetrating manner, and a first connecting hose (4) is connected to the other end of the outlet pipe (3) in a flange manner, the other end of the first connecting hose (4) is communicated with a small-sized circulating pump (5), the water outlet end of the small-sized circulating pump (5) is connected with a water delivery pipe (9) in a penetrating way, the other end of the water delivery pipe (9) is connected with a heat exchange pipe (20) in a penetrating way, the water delivery pipe (9) is communicated with the inlet pipe (7) through a tee joint (6), the other end of the water delivery pipe (9) is provided with a second electromagnetic valve (11), the surface of the inlet pipe (7) is provided with a first electromagnetic valve (8), the water inlet end of the photovoltaic heat collector (2) is connected with a water feeding pipe (14) in a run-through way, and the other end of the water feeding pipe (14) is connected with a second connecting hose (15) by a flange, and the other end of the second connecting hose (15) is connected with a connecting pipe (16) in a flange way, and the surface of the connecting pipe (16) is provided with a one-way valve (18), and the connecting pipe (16) is connected with a water replenishing pipe (17) through a tee joint (6).
2. The photovoltaic phase-change energy-storage cascade heat pump according to claim 1, wherein a mounting plate (21) is fixedly mounted at the other end of the top surface of the cascade heat pump body (1), and a screw lifter (22) is fixedly mounted on the surface of one side of the mounting plate (21), and the output end of the screw lifter (22) is provided with a screw (23), the bottom surface of the base of the photovoltaic heat collector (2) is provided with a chute (29), a slide block (27) is connected in the sliding groove (29) in a sliding way, the screw rod (23) penetrates through the mounting plate (21), the other end of the screw rod (23) is fixedly connected with a ball seat (24), a rolling ball (25) is connected inside the ball seat (24) in a rolling way, a connecting rod (26) is welded on the surface of the rolling ball (25), and the other end of the connecting rod (26) is fixedly connected with the outer wall of the sliding block (27), and one end of the bottom surface of the base of the photovoltaic heat collector (2) is hinged with the cascade heat pump main body (1) through a hinge (28).
3. The photovoltaic phase-change energy-storage overlapping type heat pump according to claim 1, wherein an upper cover (13) is fixedly connected to the top surface of the energy storage tank (12) through screws, and end covers (30) are spirally connected to two ends of the energy storage pipe (19).
4. The photovoltaic phase-change energy-storage cascade heat pump according to claim 1, wherein a temperature controller is installed inside a water storage tank of the photovoltaic heat collector (2), and an output end of the temperature controller is electrically connected with input ends of the first electromagnetic valve (8), the second electromagnetic valve (11) and the small-sized circulating pump (5).
5. The photovoltaic phase-change energy-storage overlapping type heat pump according to claim 3, wherein a plurality of energy-storage pipes (19) are arranged at equal intervals, and aerogel thermal insulation materials are adhered to the inner wall of the energy-storage box (12) and the inner wall of the upper cover (13).
6. The photovoltaic phase-change energy-storage cascade heat pump according to claim 1, characterized in that the heat exchange tube (20) is made of a thin-walled copper tube, and the energy storage tube (19) is made of a thin-walled copper tube.
7. The photovoltaic phase-change energy-storage cascade heat pump according to claim 2, characterized in that the cross-sections of the sliding block (27) and the sliding groove (29) are both in a convex shape, and the sliding block (27) is polished.
8. The photovoltaic phase-change energy-storage cascade heat pump according to claim 2, wherein a ball groove for rolling the rolling ball (25) is formed in the ball seat (24), the depth of the ball groove is greater than the diameter of the rolling ball (25), and the diameter of the ball groove is equal to the diameter of the rolling ball (25).
9. The photovoltaic phase-change energy-storage cascade heat pump according to claim 1, characterized in that the first connection hose (4) and the second connection hose (15) are both metal braided tubes, and the lengths of the first connection hose (4) and the second connection hose (15) are both greater than 50 cm.
10. The photovoltaic phase-change energy-storage cascade heat pump according to claim 1, characterized in that the corners of the bottom surface of the energy storage tank (12) are provided with support legs, and the bottom surfaces of the support legs and the bottom surface of the cascade heat pump body (1) are located on the same installation surface.
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| CN202110591204.7A CN113237245A (en) | 2021-05-28 | 2021-05-28 | Photovoltaic phase change energy storage cascade heat pump |
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| CN202110591204.7A CN113237245A (en) | 2021-05-28 | 2021-05-28 | Photovoltaic phase change energy storage cascade heat pump |
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