CN115095893B - Intelligent green low-carbon phase change heating system - Google Patents
Intelligent green low-carbon phase change heating system Download PDFInfo
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- CN115095893B CN115095893B CN202210765946.1A CN202210765946A CN115095893B CN 115095893 B CN115095893 B CN 115095893B CN 202210765946 A CN202210765946 A CN 202210765946A CN 115095893 B CN115095893 B CN 115095893B
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- 230000008859 change Effects 0.000 title claims abstract description 82
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 15
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 141
- 239000003507 refrigerant Substances 0.000 claims abstract description 109
- 230000001502 supplementing effect Effects 0.000 claims abstract description 95
- 239000007788 liquid Substances 0.000 claims description 34
- 238000010992 reflux Methods 0.000 claims description 33
- 238000005192 partition Methods 0.000 claims description 25
- 238000004146 energy storage Methods 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- 239000002826 coolant Substances 0.000 description 11
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
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- 230000005484 gravity Effects 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
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- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention discloses an intelligent green low-carbon phase change heat supply system, which comprises a heat pump unit, a heat medium circulation loop, a water supplementing pipeline, a refrigerant circulation loop, a heater and two phase change heat devices, wherein the heat source side of an evaporator of the heat pump unit and the phase change heat devices are arranged in the refrigerant circulation loop, and the heater and the phase change heat devices are arranged in the heat medium circulation loop; the phase change heat exchange device comprises a double-layer heat exchange shell and a hollow heat exchange bottom plate, wherein a phase change cold storage cavity with a downward opening is arranged on the inner side of the double-layer heat exchange shell, and the hollow heat exchange bottom plate is hinged with the double-layer heat exchange shell and can open and close the phase change cold storage cavity. The phase-change heat supply system adopts phase-change energy storage, has high ice energy storage density, reduces water source consumption, has low requirements on heat source water quality, and is very suitable for areas with shortage of water sources; the phase-change heat exchanger has high heat exchange efficiency, can rapidly make ice, melt ice and take ice, and the ice blocks after ice melting are directly dispersed into small blocks, so that the step of breaking ice is not needed, the ice blocks can be conveniently collected and transported, and the secondary utilization is convenient.
Description
Technical Field
The invention relates to the technical field of heat pump air conditioners, in particular to an intelligent green low-carbon phase-change heating system.
Background
In recent years, chinese economy is rapidly developed, the industrialization process is accelerated, and the energy consumption is increased. In order to respond to the call of the national energy conservation and emission reduction, the sustainable development road is kept. The application of new energy and novel energy-saving materials is not well-known in China.
When the traditional heat pump unit is operated, particularly in winter, the frosting phenomenon can occur on the evaporator due to low ambient temperature, so that the heat absorption capacity of the heat exchanger is reduced, and the operation efficiency of the heat pump unit is reduced.
When the traditional heat pump unit is used for defrosting the evaporator, the cold source of the evaporator cannot be used for storing energy, so that energy waste is caused. The ice storage is a mode of making water into ice, and the latent heat of phase change of the ice is utilized for storing cold energy. If the ice can be stored in the heat pump unit for use, the evaporator of the heat pump unit can be defrosted, and meanwhile, the cold energy of the heat pump unit can be collected to make secondary use of ice, so that the purposes of green and energy saving can be achieved. In the traditional ice energy storage mode, a host computer adopts glycol medium for refrigeration, cold energy is stored in a cold storage tank in summer, and energy in the cold storage tank is released when needed to supply to terminal equipment of a user for refrigerating a room. The ice storage mode is not easy to take out, the utilization rate is low, a large amount of heat energy is consumed for taking out the ice, resources are not fully utilized, and the economic benefit is poor.
Disclosure of Invention
The invention aims to solve the problems, and designs an intelligent green low-carbon phase-change heating system.
The technical scheme includes that the intelligent green low-carbon phase-change heat supply system comprises a heat pump unit, a first circulating pump, a water separator, a water collector and a tail end heat supply circulating loop, wherein a condenser, the first circulating pump, the water separator and the water collector of the heat pump unit are connected in series in the tail end heat supply circulating loop, the intelligent green low-carbon phase-change heat supply system further comprises a heat medium circulating loop, a water supplementing pipeline, a refrigerant circulating loop, a heater and two phase-change heat devices, the heat source side of an evaporator of the heat pump unit and the phase-change heat devices are arranged in the refrigerant circulating loop, and the two phase-change heat devices are arranged in the refrigerant circulating loop in parallel; the heater and the phase change heat exchange device are arranged in the heat medium circulation loop, the two phase change heat exchange devices are arranged in the heat medium circulation loop in parallel, the water supplementing pipeline is used for supplementing hot water to the phase change heat exchange device, and the two phase change heat exchange devices alternately work, so that the hot water in the phase change heat exchange device is supplemented by the water supplementing pipeline to exchange heat with a low-temperature medium of the refrigerant circulation loop and change into ice.
Preferably, the phase change heat exchange device comprises a double-layer heat exchange shell and a hollow heat exchange bottom plate, wherein the inner side of the double-layer heat exchange shell is provided with a phase change cold storage cavity with a downward opening, the hollow heat exchange bottom plate is hinged with the double-layer heat exchange shell and can open and close the phase change cold storage cavity, a closed heat exchange cavity is arranged between the inner layer shell and the outer layer shell of the double-layer heat exchange shell, a partition plate is fixedly arranged in the phase change cold storage cavity, and the partition plate divides the phase change cold storage cavity into a plurality of ice making chambers which are communicated.
Preferably, the refrigerant circulation loop comprises a refrigerant main output pipeline, a refrigerant branch output pipeline, a refrigerant main reflux pipeline and a refrigerant branch reflux pipeline, wherein the two refrigerant branch output pipelines and the two refrigerant branch reflux pipelines are arranged in parallel and are connected with the refrigerant main output pipeline, and the two refrigerant branch reflux pipelines are arranged in parallel and are connected with the refrigerant main reflux pipeline; the heat medium circulation loop comprises a heat medium main output pipeline, a heat medium branch output pipeline, a heat medium main reflux pipeline and a heat medium branch reflux pipeline, wherein the heat medium branch output pipeline and the heat medium branch reflux pipeline are both arranged in two, the two heat medium branch output pipelines are communicated and connected in parallel, the two heat medium branch output pipelines are connected in parallel and connected with the heat medium main output pipeline, and the two heat medium branch reflux pipelines are connected in parallel and connected with the heat medium main reflux pipeline.
Preferably, the hollow heat exchange bottom plate is provided with a first liquid inlet and a first liquid outlet which are communicated with the inner cavity of the hollow heat exchange bottom plate, the upper part of the double-layer heat exchange shell is provided with a second liquid inlet and a second liquid outlet which are communicated with the heat exchange cavity, and the first liquid inlet is communicated with a refrigerant branch output pipeline and a heating medium branch output pipeline; the first liquid outlet is communicated with the second liquid inlet through a conduction hose, and the second liquid outlet is communicated with a refrigerant branch return pipeline and a heating medium branch return pipeline.
Preferably, the upper part of the double-layer heat exchange shell is provided with a water supplementing port and an overflow port, the water supplementing port and the overflow port are communicated with the phase-change cold storage cavity, and the tops of the water supplementing port and the overflow port extend to the upper part of the double-layer heat exchange shell.
Preferably, the water supplementing pipeline comprises a main water supplementing pipe and two branch water supplementing pipes communicated with the main water supplementing pipe, the two branch water supplementing pipes are arranged in parallel, the main water supplementing pipe is provided with a water supplementing pump and a water supplementing main electromagnetic valve, the branch water supplementing pipe is provided with a water supplementing branch electromagnetic valve, the branch water supplementing pipes are in one-to-one correspondence with the heat exchange devices, and the branch water supplementing pipes are communicated with corresponding water supplementing ports.
Preferably, the second circulating pump is arranged on the main heat medium return pipeline, the heat medium branch output electromagnetic valve is arranged on the heat medium branch output pipeline, and the heat medium branch return electromagnetic valve is arranged on the heat medium branch return pipeline.
Preferably, the refrigerant main output pipeline is provided with a third circulating pump and a refrigerant main output electromagnetic valve, the refrigerant branch output electromagnetic valve is arranged on the refrigerant branch output pipeline, the refrigerant main return pipeline is provided with a refrigerant main return electromagnetic valve, and the refrigerant branch return pipeline is provided with a refrigerant branch return electromagnetic valve.
Preferably, a cavity is arranged in the partition board, and the cavity of the partition board is communicated with the heat exchange cavity.
Preferably, the double-layer heat exchange device further comprises a support, wherein the double-layer heat exchange shell is fixed on the support, an electric hydraulic push rod is hinged to the support, and the telescopic end of the electric hydraulic push rod is hinged to the hollow heat exchange bottom plate.
The invention has the beneficial effects that:
1. the phase-change heat supply system can collect cold energy of the heat pump unit while defrosting the evaporator of the heat pump unit, so that ice can be reused, and the phase-change energy storage is adopted, so that the ice energy storage density is high, and the water source consumption is reduced;
2. the phase change heating system has low requirements on the quality of heat source water, and is very suitable for water source shortage areas;
3. the phase change heat exchanger has large heat exchange area and high heat exchange efficiency, and can rapidly make and melt ice;
4. the two phase change heat supply systems are arranged in the phase change heat supply system, and the two phase change heat supply systems work intelligently and alternately, so that the normal operation of the heat pump unit is ensured, meanwhile, the ice melting and taking can be facilitated, and the intelligent, green and low-carbon characteristics are realized;
5. the ice taking is convenient, the hollow heat exchange bottom plate is driven to downwards rotate by the electric hydraulic push rod, and under the action of gravity, ice cubes in the phase-change cold storage cavity can naturally fall down, so that the ice cubes can be rapidly discharged; through setting up the baffle, separate into a plurality of ice-making rooms with the cold chamber of phase transition storage, the ice-cube after the ice-melt is direct disperses into the fritter, need not the step of breaking ice, can be convenient for collect and transport ice-cube, the reutilization of being convenient for.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a phase change thermal device;
FIG. 3 is a left side view of the phase change thermic device;
FIG. 4 is a top cross-sectional view of a double layer heat exchange housing;
FIG. 5 is a rear partial view of the phase change thermic device;
in the figure, 1, a heat pump unit; 2. a first circulation pump; 3. a water separator; 4. a water collector; 5. a terminal heating circulation loop; 6. a heating medium circulation loop; 7. a water supplementing pipeline; 8. a refrigerant circulation circuit; 9. a heater; 10. a phase change thermal device; 11. a double-layer heat exchange shell; 12. a hollow heat exchange bottom plate; 13. a phase change cold storage cavity; 14. a heat exchange cavity; 15. a partition plate; 16. an ice making chamber; 17. a refrigerant main output pipe; 18. a refrigerant branch output pipe; 19. a refrigerant main return pipe; 20. a refrigerant branch return pipe; 21. a heating medium main output pipeline; 22. a heat medium branch output pipeline; 23. a heating medium main return pipeline; 24. a heat medium branch return pipeline; 25. a first liquid inlet; 26. a first liquid outlet; 27. a second liquid inlet; 28. a second liquid outlet; 29. conducting a hose; 30. a water supplementing port; 31. an overflow port; 32. a main water supplementing pipe; 33. branching water supplementing pipes; 34. a water supplementing pump; 35. a water supplementing main electromagnetic valve; 36. supplementing water to branch electromagnetic valves; 37. a heat medium source; 38. a second circulation pump; 39. a heat medium branch outputs an electromagnetic valve; 40. a heat medium branch return electromagnetic valve; 41. a third circulation pump; 42. a refrigerant main output electromagnetic valve; 43. a refrigerant branch output electromagnetic valve; 44. a refrigerant main return electromagnetic valve; 45. a refrigerant branch return electromagnetic valve; 46. a bracket; 47. an electro-hydraulic push rod.
Detailed Description
The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
In one embodiment, please refer to fig. 1-5: the intelligent green low-carbon phase-change heat supply system comprises a heat pump unit 1, a first circulating pump 2, a water separator 3, a water collector 4 and a tail end heat supply circulation loop 5, wherein a condenser of the heat pump unit 1, the first circulating pump 2, the water separator 3 and the water collector 4 are connected in series in the tail end heat supply circulation loop 5, and the first circulating pump 2 conveys heat in the condenser of the heat pump unit 1 to the water separator 3 through the tail end heat supply circulation loop 5 to supply heat to each tail end and then returns to the water collector 4 and the condenser of the heat pump unit 1 to complete the whole set of heat supply circulation; the heat pump unit further comprises a heating medium circulation loop 6, a water supplementing pipeline 7, a cooling medium circulation loop 8, a heater 9 and two phase change heat devices 10, wherein the heat source side of an evaporator of the heat pump unit 1 and the phase change heat devices 10 are arranged in the cooling medium circulation loop 8, and the two phase change heat devices 10 are arranged in the cooling medium circulation loop 8 in parallel; the heater 9 and the phase change heat exchanger 10 are arranged in the heat medium circulation loop 6, the two phase change heat exchangers 10 are arranged in parallel in the heat medium circulation loop 6, the water supplementing pipeline 7 is used for supplementing hot water to the phase change heat exchanger 10, the two phase change heat exchangers 10 work alternately, and the hot water supplemented into the phase change heat exchanger 10 by the water supplementing pipeline 7 exchanges heat with a low-temperature medium of the refrigerant circulation loop 8 and changes into ice. The refrigerant is a low freezing point medium, is not frozen below zero, such as antifreeze, after the hot water in the phase change heat device 10 changes into ice, the heater 9 is started, the heating medium circulation loop 6 starts to heat the refrigerant in the phase change heat device 10, and the temperature of the refrigerant rises after the heating, so that the refrigerant becomes a heating medium, and ice melting is performed.
For collecting the cold energy of the heat pump unit 1, please refer to fig. 2 to 5, the phase-change heat exchange device 10 includes a double-layer heat exchange shell 11 and a hollow heat exchange bottom plate 12, the inner side of the double-layer heat exchange shell 11 is provided with a phase-change cold storage cavity 13 with a downward opening, the hollow heat exchange bottom plate 12 is hinged with the double-layer heat exchange shell 11 and can open and close the phase-change cold storage cavity 13, the double-layer heat exchange shell 11 is of an inner-outer double-layer structure, a sealed heat exchange cavity 14 is arranged between the inner-layer shell and the outer-layer shell of the double-layer heat exchange shell 11, a partition 15 is fixedly arranged in the phase-change cold storage cavity 13, and the partition 15 divides the phase-change cold storage cavity 13 into a plurality of ice making chambers 16 which are communicated. The partition plate 15 is formed by connecting a longitudinal plate and a plurality of transverse plates, so that the partition plate is divided into a plurality of ice making chambers 16, when the hollow heat exchange bottom plate 12 seals the phase change cold storage cavity 13, a gap of 1-5 mm exists between the hollow heat exchange bottom plate 12 and the bottom of the partition plate 15, so that the ice making chambers 16 are communicated with each other, the water level of each ice making chamber 16 is the same when water is supplemented, ice formed at the gap between the partition plate 15 and the phase change cold storage cavity 13 can be melted firstly when ice is melted, and the situation that ice cubes cannot be decomposed is avoided; the refrigerant can enter the inner cavities of the heat exchange cavity 14 and the hollow heat exchange bottom plate 12, can exchange heat with water in the phase-change cold storage cavity 13 through the double-layer heat exchange shell 11, the hollow heat exchange bottom plate 12 and the partition plate 15, improves the heat exchange contact area, and after the water in the phase-change cold storage cavity 13 is frozen, the heat medium circulation loop 6 heats the phase-change heat exchange device 10, and can exchange heat and heat ice cubes in the phase-change cold storage cavity 13 through the double-layer heat exchange shell 11, the hollow heat exchange bottom plate 12 and the partition plate 15 to melt ice.
The refrigerant circulation loop 8 comprises a refrigerant main output pipeline 17, a refrigerant branch output pipeline 18, a refrigerant main reflux pipeline 19 and a refrigerant branch reflux pipeline 20, wherein the number of the refrigerant branch output pipeline 18 and the refrigerant branch reflux pipeline 20 is two, the two refrigerant branch output pipelines 18 are arranged in parallel and are connected with the refrigerant main output pipeline 17, and the two refrigerant branch reflux pipelines 20 are arranged in parallel and are connected with the refrigerant main reflux pipeline 19; the heat medium circulation loop 6 comprises a heat medium main output pipeline 21, a heat medium branch output pipeline 22, a heat medium main reflux pipeline 23 and a heat medium branch reflux pipeline 24, wherein the two heat medium branch output pipelines 22 and the two heat medium branch reflux pipelines 24 are respectively arranged in parallel, the two heat medium branch output pipelines 22 are communicated and arranged in parallel, the two heat medium branch output pipelines 22 are arranged in parallel and connected with the heat medium main output pipeline 21, and the two heat medium branch reflux pipelines 24 are arranged in parallel and connected with the heat medium main reflux pipeline 23.
Referring to fig. 5, a first liquid inlet 25 and a first liquid outlet 26 which are communicated with an inner cavity of the hollow heat exchange bottom plate 12 are arranged on the hollow heat exchange bottom plate 12, a second liquid inlet 27 and a second liquid outlet 28 which are communicated with the heat exchange cavity 14 are arranged on the upper part of the double-layer heat exchange shell 11, and the first liquid inlet 25 is communicated with a refrigerant branch output pipeline 18 and a heating medium branch output pipeline 22; the first liquid outlet 26 is communicated with the second liquid inlet 27 through a conduction hose 29, and the second liquid outlet 28 is communicated with the refrigerant branch return pipeline 20 and the heating medium branch return pipeline 24. The conducting hose 29 is a flexible hose, and can still keep the first liquid outlet 26 communicated with the second liquid inlet 27 when the hollow heat exchange partition plate 15 rotates relative to the double-layer heat exchange shell 11.
In order to facilitate water supplementing into the phase-change cold storage cavity 13 and discharge water extruded by volume expansion in the ice making process, a water supplementing port 30 and an overflow port 31 are arranged at the upper part of the double-layer heat exchange shell 11, the water supplementing port 30 and the overflow port 31 are communicated with the phase-change cold storage cavity 13, and the tops of the water supplementing port 30 and the overflow port 31 extend to the upper part of the double-layer heat exchange shell 11.
The water supplementing pipeline 7 comprises a main water supplementing pipe 32 and two branch water supplementing pipes 33 communicated with the main water supplementing pipe 32, the two branch water supplementing pipes 33 are arranged in parallel, a water supplementing pump 34 and a water supplementing main electromagnetic valve 35 are installed on the main water supplementing pipe 32, water supplementing branch electromagnetic valves 36 are installed on the branch water supplementing pipes 33, the branch water supplementing pipes 33 are in one-to-one correspondence with the heat exchanging devices, and the branch water supplementing pipes 33 are communicated with the corresponding water supplementing ports 30. The input end of the main water supplementing pipe 32 is connected with a heating medium source 37, the heating medium source 37 is a hot water tank, the water supplementing pump 34 provides power, the heating medium source 37 is conveyed to the branch water supplementing pipe 33 through the main water supplementing pipe 32, and then the phase-change cold storage cavity 13 is filled through the water supplementing port 30.
The second circulating pump 38 is installed on the heat medium main return pipe 23, the heat medium branch output electromagnetic valve 39 is installed on the heat medium branch output pipe 22, and the heat medium branch return electromagnetic valve 40 is installed on the heat medium branch return pipe 24.
The third circulating pump 41 and the main coolant output solenoid valve 42 are installed on the main coolant output pipeline 17, the branch coolant output solenoid valve 43 is installed on the branch coolant output pipeline 18, the main coolant return solenoid valve 44 is installed on the main coolant return pipeline 19, and the branch coolant return solenoid valve 45 is installed on the branch coolant return pipeline 20.
In order to improve the heat exchange effect and facilitate rapid ice melting, a cavity is arranged in the partition plate 15, and the cavity of the partition plate 15 is communicated with the heat exchange cavity 14. The refrigerant and the heating medium can enter the cavity of the partition plate 15 from the heat exchange cavity 14 to exchange heat with water or ice in the phase-change cold storage cavity 13.
In order to facilitate the installation of the double-layer heat exchange shell 11 and the collection of ice cubes, a support 46 is further arranged, the double-layer heat exchange shell 11 is fixed on the support 46, an electric hydraulic push rod 47 is hinged to the support 46, and the telescopic end of the electric hydraulic push rod 47 is hinged to the hollow heat exchange bottom plate 12. The electric hydraulic push rod 47 drives the hollow heat exchange bottom plate 12 to move, so that the hollow heat exchange bottom plate 12 is rotated upwards to be in a horizontal state, the phase-change cold storage cavity 13 is closed, or the hollow heat exchange bottom plate 12 is driven to be rotated downwards to be in a vertical state, the phase-change cold storage cavity 13 is opened, and ice cubes and molten water are discharged.
All the electrical components in the embodiment are connected with the power supply adapted to the electrical components through wires, and an appropriate controller should be selected according to actual situations so as to meet control requirements, specific connection and control sequences, and the electrical connection should be completed by referring to the following working principles, in which the electrical components are sequentially connected in working sequence, and the detailed connection means are known in the art, and the following main description of the working principles and processes will not be provided for electrical control.
Working procedure of this embodiment:
s1, in order to distinguish two phase change heat devices 10 conveniently, one of the phase change heat devices 10 is set to be a left-side phase change heat device 10, and the other one of the phase change heat devices 10 is set to be a right-side phase change heat device 10, when the left-side phase change heat device 10 works, the telescopic end of an electric hydraulic push rod 47 stretches out to push a hollow heat exchange bottom plate 12 to rotate upwards, and when a phase change cold storage cavity 13 is closed, a partition plate 15 is closely adjacent to the hollow heat exchange bottom plate 12, and water can pass through a gap between the partition plate 15 and the hollow heat exchange bottom plate 12;
s2, starting a water supplementing pump 34, a water supplementing main electromagnetic valve 35 and a water supplementing branch electromagnetic valve 36 of the same branch circuit with the left-side phase change heat exchange device 10, wherein the water supplementing pump 34 provides power, a heating medium source 37 is conveyed to a corresponding branch water supplementing pipe 33 through a main water supplementing pipe 32, the phase change cold storage cavity 13 is filled through a water supplementing port 30, and when water overflows from an overflow port 31, the water supplementing pump 34, the water supplementing main electromagnetic valve 35 and the water supplementing branch electromagnetic valve 36 are closed;
s3, starting a third circulating pump 41, a main refrigerant output electromagnetic valve 42, a main refrigerant return electromagnetic valve 44, a branch refrigerant output electromagnetic valve 43 and a branch refrigerant return electromagnetic valve 45 of the same refrigerant branch loop with the left-side phase-change heat device 10, circulating the refrigerant in a formed loop, enabling the refrigerant to sequentially enter the inner cavity of the hollow heat exchange bottom plate 12, the first liquid outlet 26, the conducting hose 29, the second liquid inlet 27, the heat exchange cavity 14 and the inner cavity of the partition plate 15 through the first liquid inlet 25, enabling the refrigerant to heat exchange with hot water in the phase-change cold storage cavity 13 in the inner cavity of the hollow heat exchange bottom plate 12, the inner cavity of the heat exchange cavity 14 and the inner cavity of the partition plate 15, then discharging the refrigerant to the branch refrigerant return pipeline 20 and the main refrigerant return pipeline 19 through the second liquid outlet 28, so as to convey heat in the left-side phase-change heat device 10 to the evaporator of the heat pump unit 1, heating the refrigerant of the evaporator, enabling the heated refrigerant to rise to a preset temperature under the action of the compressor, then entering the condenser of the heat pump unit 1, enabling the first circulating pump 2 to convey heat in the condenser of the heat pump unit 1 to the end 3 through the end circulating loop 5 to the end of the heat pump unit 1, and then returning the heat to the whole set of the heat pump unit 1 to the heat pump unit 4, and completing the heat supply cycle to the heat supply;
s4, as the heat pump unit 1 deepens the heat extraction degree of the left-side phase-change heat exchange device 10, the heat source water in the phase-change cold storage cavity 13 is subjected to phase-change icing, the volume is increased in the water icing process, and the excessive water can overflow the phase-change cold storage cavity 13 through the overflow port 31, so that the heat source water in the phase-change cold storage cavity 13 is frozen finally; during the period, the right-side phase change heat exchange device 10 is controlled to work, the same principle as the S1 and the S2 is adopted, the telescopic end of the electric hydraulic push rod 47 of the right-side phase change heat exchange device 10 stretches out to push the hollow heat exchange bottom plate 12 to rotate upwards, and the phase change cold storage cavity 13 is sealed; starting a water supplementing pump 34, a water supplementing main electromagnetic valve 35 and a water supplementing branch electromagnetic valve 36 of the same branch circuit with the right-side phase change heat exchange device 10, supplying power to the water supplementing pump 34, conveying a heating medium source 37 to a corresponding branch water supplementing pipe 33 from a main water supplementing pipe 32, injecting water into the phase change cold storage cavity 13 from the water supplementing port 30, and closing the water supplementing pump 34, the water supplementing main electromagnetic valve 35 and the water supplementing branch electromagnetic valve 36 when water overflows from the overflow port 31;
s5, closing a refrigerant branch output electromagnetic valve 43 and a refrigerant branch return electromagnetic valve 45 of the same refrigerant branch circuit with the left phase change heat exchange device 10, opening a heater 9, a second circulating pump 38, a heating medium branch output electromagnetic valve 39 and a heating medium branch return electromagnetic valve 40 of the same heating medium branch circuit with the left phase change heat exchange device 10, supplying power to the second circulating pump 38, circularly flowing and heating the refrigerant in the left phase change heat exchange device 10, and heating and melting ice of ice cakes in the phase change cold storage cavity 13; during the period, the right side phase change heat exchange device 10 is controlled to exchange heat, the same principle as the step S3, a third circulating pump 41, a main refrigerant output electromagnetic valve 42, a main refrigerant return electromagnetic valve 44, a branch refrigerant output electromagnetic valve 43 and a branch refrigerant return electromagnetic valve 45 of the same refrigerant branch circuit with the right side phase change heat exchange device 10 are started, the refrigerant circularly flows in a loop formed, the heat in the right side phase change heat exchange device 10 is conveyed to the evaporator of the heat pump unit 1 to heat the refrigerant of the evaporator, the heated refrigerant is heated to a preset temperature under the action of a compressor and subjected to phase change, then enters the condenser of the heat pump unit 1, the first circulating pump 2 conveys the heat in the condenser of the heat pump unit 1 to the water separator 3 through the tail end heat supply loop 5 to supply heat to each tail end, then returns to the water collector 4, and then returns to the whole set of condenser of the heat pump unit 1 to complete the heat supply cycle;
s6, after the wall surface and the port of the ice making chamber 16 of the left phase change heat exchange device 10 are melted, controlling the telescopic end of the electric hydraulic push rod 47 to shrink, driving the hollow heat exchange bottom plate 12 to rotate downwards by approximately 90 degrees, naturally falling ice cakes under the action of gravity, and arranging a collection trolley below the phase change heat exchange device 10, so that the ice cakes can be collected conveniently; s1, S2 are repeated after the ice cubes are emptied;
s7, when the heat source water in the phase-change cold storage cavity 13 of the right-side phase-change heat exchange device 10 is frozen, closing a refrigerant branch output electromagnetic valve 43 and a refrigerant branch return electromagnetic valve 45 of the same refrigerant branch circuit of the right-side phase-change heat exchange device 10, opening a heater 9, a second circulating pump 38, a heat medium branch output electromagnetic valve 39 and a heat medium branch return electromagnetic valve 40 of the same heat medium branch circuit of the right-side phase-change heat exchange device 10, wherein the second circulating pump 38 provides power, the refrigerant in the right-side phase-change heat exchange device 10 circularly flows and heats, and heats and thaws ice cubes in the phase-change cold storage cavity 13; meanwhile, the left-side phase change heat exchanger 10 performs step S3;
s8, after the wall surface and the port of the ice making chamber 16 of the right-side phase change heat exchange device 10 are melted, controlling the telescopic end of the electric hydraulic push rod 47 to shrink, driving the hollow heat exchange bottom plate 12 to downwards rotate approximately 90 degrees, naturally dropping ice cubes under the action of gravity, and arranging a collecting trolley below the phase change heat exchange device 10, so that the ice cubes can be conveniently collected; s4, after the ice cubes are emptied, repeating the step S4; the cycle is such that the two phase change thermic devices 10 are operated alternately.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used to distinguish one element from another.
The above technical solution only represents the preferred technical solution of the present invention, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present invention, and the technical solution falls within the scope of the present invention.
Claims (5)
1. The intelligent green low-carbon phase-change heat supply system comprises a heat pump unit (1), a first circulating pump (2), a water separator (3), a water collector (4) and a tail end heat supply circulating loop (5), wherein a condenser, the first circulating pump (2), the water separator (3) and the water collector (4) of the heat pump unit (1) are connected in series in the tail end heat supply circulating loop (5), and the intelligent green low-carbon phase-change heat supply system is characterized by further comprising a heating medium circulating loop (6), a water supplementing pipeline (7), a refrigerant circulating loop (8), a heater (9) and two phase-change heat devices (10), wherein the heat source side of an evaporator of the heat pump unit (1) and the phase-change heat devices (10) are arranged in the refrigerant circulating loop (8), and the two phase-change heat devices (10) are arranged in the refrigerant circulating loop (8) in parallel; the heater (9) and the phase change heat devices (10) are arranged in the heat medium circulation loop (6), the two phase change heat devices (10) are arranged in the heat medium circulation loop (6) in parallel, the water supplementing pipeline (7) is used for supplementing hot water to the phase change heat devices (10), the two phase change heat devices (10) work alternately, and the water supplementing pipeline (7) is used for supplementing the hot water in the phase change heat devices (10) and the low-temperature medium of the refrigerant circulation loop (8) to exchange heat and change into ice;
the phase change heat exchange device (10) comprises a double-layer heat exchange shell (11) and a hollow heat exchange bottom plate (12), wherein a phase change cold storage cavity (13) with a downward opening is arranged on the inner side of the double-layer heat exchange shell (11), the hollow heat exchange bottom plate (12) is hinged with the double-layer heat exchange shell (11) and can open and close the phase change cold storage cavity (13), a closed heat exchange cavity (14) is arranged between the inner shell and the outer shell of the double-layer heat exchange shell (11), a partition plate (15) is fixedly arranged in the phase change cold storage cavity (13), and the partition plate (15) divides the phase change cold storage cavity (13) into a plurality of ice making chambers (16) which are communicated;
the refrigerant circulation loop (8) comprises a refrigerant main output pipeline (17), a refrigerant branch output pipeline (18), a refrigerant main reflux pipeline (19) and refrigerant branch reflux pipelines (20), wherein the number of the refrigerant branch output pipeline (18) and the number of the refrigerant branch reflux pipelines (20) are two, the two refrigerant branch output pipelines (18) are arranged in parallel and are connected with the refrigerant main output pipeline (17), and the two refrigerant branch reflux pipelines (20) are arranged in parallel and are connected with the refrigerant main reflux pipeline (19); the heat medium circulation loop (6) comprises a heat medium main output pipeline (21), a heat medium branch output pipeline (22), a heat medium main reflux pipeline (23) and a heat medium branch reflux pipeline (24), wherein the number of the heat medium branch output pipeline (22) and the number of the heat medium branch reflux pipeline (24) are two, the two heat medium branch output pipelines (22) are communicated and connected in parallel, the two heat medium branch output pipelines (22) are connected in parallel and connected with the heat medium main output pipeline (21), and the two heat medium branch reflux pipelines (24) are connected in parallel and connected with the heat medium main reflux pipeline (23);
a first liquid inlet (25) and a first liquid outlet (26) which are communicated with the inner cavity of the hollow heat exchange bottom plate (12) are formed in the hollow heat exchange bottom plate, a second liquid inlet (27) and a second liquid outlet (28) which are communicated with the heat exchange cavity (14) are formed in the upper part of the double-layer heat exchange shell (11), and the first liquid inlet (25) is communicated with a refrigerant branch output pipeline (18) and a heating medium branch output pipeline (22); the first liquid outlet (26) is communicated with the second liquid inlet (27) through a conduction hose (29), and the second liquid outlet (28) is communicated with the refrigerant branch return pipeline (20) and the heating medium branch return pipeline (24);
the double-layer heat exchange shell (11) is provided with a water supplementing port (30) and an overflow port (31), the water supplementing port (30) and the overflow port (31) are communicated with the phase-change cold storage cavity (13), and the tops of the water supplementing port (30) and the overflow port (31) extend to the upper part of the double-layer heat exchange shell (11);
the water supplementing pipeline (7) comprises a main water supplementing pipe (32) and two branch water supplementing pipes (33) communicated with the main water supplementing pipe (32), the two branch water supplementing pipes (33) are arranged in parallel, a water supplementing pump (34) and a water supplementing main electromagnetic valve (35) are arranged on the main water supplementing pipe (32), water supplementing branch electromagnetic valves (36) are arranged on the branch water supplementing pipes (33), the branch water supplementing pipes (33) are in one-to-one correspondence with the heat exchange devices, and the branch water supplementing pipes (33) are communicated with corresponding water supplementing ports (30).
2. The intelligent green low-carbon phase-change heating system according to claim 1, wherein a second circulating pump (38) is installed on the heating medium main reflux pipeline (23), a heating medium branch output electromagnetic valve (39) is installed on the heating medium branch output pipeline (22), and a heating medium branch reflux electromagnetic valve (40) is installed on the heating medium branch reflux pipeline (24).
3. The intelligent green low-carbon phase-change heating system according to claim 1, wherein a third circulating pump (41) and a refrigerant main output electromagnetic valve (42) are installed on the refrigerant main output pipeline (17), a refrigerant branch output electromagnetic valve (43) is installed on the refrigerant branch output pipeline (18), a refrigerant main return electromagnetic valve (44) is installed on the refrigerant main return pipeline (19), and a refrigerant branch return electromagnetic valve (45) is installed on the refrigerant branch return pipeline (20).
4. The intelligent green low-carbon phase-change heat supply system according to claim 1, wherein a cavity is formed in the partition board (15), and the cavity of the partition board (15) is communicated with the heat exchange cavity (14).
5. The intelligent green low-carbon phase-change heat supply system according to claim 1, further comprising a bracket (46), wherein the double-layer heat exchange shell (11) is fixed on the bracket (46), an electric hydraulic push rod (47) is hinged on the bracket (46), and the telescopic end of the electric hydraulic push rod (47) is hinged with the hollow heat exchange bottom plate (12).
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| CN101236028A (en) * | 2008-03-04 | 2008-08-06 | 东南大学 | Solar energy-air source energy-saving type solution heat pump device |
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| FR2465963A1 (en) * | 1979-09-24 | 1981-03-27 | Dietrich & Cie De | Heat energy storage by phase transformation - forms ice blocks in heat recovery vessel during draw-off period |
| JP2005265249A (en) * | 2004-03-17 | 2005-09-29 | Osaka Gas Co Ltd | Hot-water supply/air conditioning system |
| CN101358784A (en) * | 2008-09-24 | 2009-02-04 | 天津大学 | Solar thermal storage and geothermal heat pump group system |
| CN101566410B (en) * | 2009-05-27 | 2010-08-25 | 湖南工程学院 | Method and system for reducing frosting degree of air-source heat pump hot water unit in winter |
| SE540259C2 (en) * | 2014-11-10 | 2018-05-15 | Energy Machines Aps | Heating system comprising three heat pumps |
| CN111457683B (en) * | 2020-05-19 | 2023-06-02 | 烟台大学 | Novel waste heat and condensate recovery freeze dryer and operation method thereof |
| CN111780303B (en) * | 2020-07-21 | 2021-07-27 | 南京工程学院 | Efficient heat source tower heat pump system for southern areas |
| CN111928389B (en) * | 2020-09-04 | 2021-10-01 | 南京工程学院 | Efficient cold and heat supply system based on combined operation of heat source tower and ice cold accumulation |
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