CN111637658A - Load-adjustable solar energy and heat recovery composite heat pump system - Google Patents
Load-adjustable solar energy and heat recovery composite heat pump system Download PDFInfo
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- CN111637658A CN111637658A CN202010593223.9A CN202010593223A CN111637658A CN 111637658 A CN111637658 A CN 111637658A CN 202010593223 A CN202010593223 A CN 202010593223A CN 111637658 A CN111637658 A CN 111637658A
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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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
- F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or 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
- Y02E10/44—Heat exchange systems
Abstract
The invention discloses a load-adjustable solar energy and heat recovery composite heat pump system, which comprises a fluorine path system, a solar energy heat collection and exchange system, a hot water tank and an air conditioning water tank, wherein the fluorine path system is connected with the solar energy heat collection and exchange system; the fluorine path system comprises a compressor, a four-way valve, a first heat exchange coil, a second heat exchange coil, a throttling device, an outdoor heat exchanger, a gas-liquid separator and a communicating pipeline; the solar heat collection and exchange system comprises a solar heat collection pipe, a water pump, a one-way valve, a proportional electromagnetic valve, a first solar coil, a second solar coil and a communication pipeline; the first solar coil and the first heat exchange coil are positioned in the hot water tank; and the second solar coil and the second heat exchange coil are positioned in the air-conditioning water tank. According to the invention, the solar coil pipes are added in the hot water tank and the air-conditioning water tank, the water in the hot water tank is heated by the high-temperature hot water generated by the solar heat collecting pipe, the heating capacity and the energy efficiency of the unit are increased, and the hot water and the air-conditioning capacity are adjusted by adjusting the flow of the solar coil pipes, so that the unit is more energy-saving and efficient.
Description
Technical Field
The invention relates to the technical field of air source heat pumps, in particular to a load-adjustable solar energy and heat recovery composite heat pump system.
Background
The air source heat pump is characterized in that a high-temperature and high-pressure refrigerant generated by compression of a compressor enters a condenser to perform phase change heat exchange to heat water in a water system through circulation of the refrigerant in the system, the high-temperature and high-pressure refrigerant coming out of the compressor has high superheat degree, the refrigerant directly enters the condenser to perform heat exchange and only uses phase change latent heat, sensible heat is not recycled, sensible heat of the refrigerant is low in heat exchange efficiency, and the recycling effect is poor.
To solve this problem, the present invention is hereby proposed.
Disclosure of Invention
The invention aims to provide a load-adjustable solar energy and heat recovery composite heat pump system, which is additionally provided with a hot water tank, solar coils are added in the hot water tank and an air conditioning water tank, and high-temperature hot water generated by a solar heat collecting pipe is used for heating water in the water tank, so that the heating capacity and energy efficiency of a unit are improved.
The purpose of the invention can be realized by the following technical scheme:
a load-adjustable solar energy and heat recovery composite heat pump system comprises a fluorine path system, a solar energy heat collection and exchange system, a hot water tank and an air conditioning water tank; the fluorine path system comprises a compressor, a four-way valve, a first heat exchange coil, a second heat exchange coil, a throttling device, an outdoor heat exchanger, a gas-liquid separator and a communicating pipeline; the compressor is connected with the first heat exchange coil pipe through a pipeline, the other end of the first heat exchange coil pipe is connected with the four-way valve, one end of the second heat exchange coil pipe is connected with the four-way valve, the other end of the second heat exchange coil pipe is connected with the throttling device, the other end of the throttling device is connected with the outdoor heat exchanger, the other end of the outdoor heat exchanger is connected with the four-way valve, and the gas-liquid separator is connected with the four-way valve; the solar heat collection and exchange system comprises a solar heat collection pipe, a water pump, a one-way valve, a proportional electromagnetic valve, a first solar coil, a second solar coil and a communication pipeline;
one end of the solar heat collecting pipe is connected with the first solar coil pipe and the second solar coil pipe, and the other end of the solar heat collecting pipe is connected with the other ends of the first solar coil pipe and the second solar coil pipe through a water pump, a one-way valve and an electromagnetic valve;
the first solar coil and the first heat exchange coil are positioned in the hot water tank; and the second solar coil and the second heat exchange coil are positioned in the air-conditioning water tank.
Preferably, the check valve comprises a first check valve and a second check valve; the solenoid valves include a first proportional solenoid valve and a second proportional solenoid valve.
Preferably, one end of the first solar coil is connected with the solar heat collecting pipe through a first proportional electromagnetic valve, a first one-way valve and a water pump.
Preferably, one end of the second solar coil is connected with the solar heat collecting pipe through a second proportional electromagnetic valve, a second one-way valve and a water pump; one end of the second solar coil is connected with the solar heat collecting pipe through a second proportional electromagnetic valve, a second one-way valve and a water pump.
Preferably, the hot water tank is provided with a first water inlet pipe and a first water outlet pipe; the air conditioning water tank is provided with a second water inlet pipe and a second water outlet pipe.
Preferably, the control method of the heat pump system comprises a single hot water mode, wherein the single hot water mode is that the water path of the air conditioning water tank is closed, the water path of the hot water tank is opened, heat release and heat exchange are carried out on refrigerant compressed by the compressor in the hot water tank to heat water in the hot water tank, heat exchange is carried out between high-temperature hot water in the solar heat collecting pipe and the water in the hot water tank, and meanwhile, the heat exchange amount of the air conditioning water tank is adjusted through judgment on unit load.
Preferably, the system further comprises a single heating mode, wherein the single heating mode is a single heating mode, a water path of the hot water tank is closed, a water path of the air-conditioning water tank is opened, heat release latent heat exchange is carried out on a refrigerant compressed by the compressor in the second heat exchange coil to heat water in the air-conditioning water tank, heat exchange is carried out between high-temperature hot water in the solar heat collecting pipe and water with lower temperature in the air-conditioning water tank to heat water in the air-conditioning water tank, and meanwhile, the heat exchange quantity of the air-conditioning water tank is adjusted through judgment on unit load.
Preferably, the air conditioner further comprises a single refrigeration mode, wherein the single refrigeration mode is a single refrigeration mode, a water path of the hot water tank is closed, a water path of the air conditioner water tank is opened, the refrigerant compressed by the compressor releases heat in the outdoor heat exchanger, and the refrigerant enters the second heat exchange coil pipe for heat absorption and latent heat exchange to reduce the temperature of water in the air conditioner water tank through throttling of the throttling device.
Preferably, the system further comprises a heating and hot water combined mode, wherein the heating and hot water combined mode is that the water paths of the hot water tank and the air conditioning tank are simultaneously opened, sensible heat exchange is carried out on refrigerant compressed by the compressor in the hot water tank to heat water in the hot water tank, high-temperature hot water in the solar heat collecting pipe is respectively subjected to heat exchange with water with lower temperature in the hot water tank and the air conditioning tank through the water pump, and the heat exchange amount of the water paths of the hot water tank and the air conditioning tank is adjusted through judgment of unit load.
Preferably, the system also comprises a refrigeration and hot water combined mode, wherein the refrigeration and hot water combined mode is that a hot water tank and an air-conditioning water tank are opened simultaneously, the refrigerant compressed by a compressor performs sensible heat exchange in the hot water tank to heat water in the water tank, the refrigerant enters an outdoor heat exchanger through a four-way valve after heat exchange to release heat and condense, and enters the air-conditioning water tank through throttling of a throttling device to perform latent heat exchange to reduce the temperature of the water in the air-conditioning water tank; meanwhile, high-temperature hot water in the solar heat collecting pipe enters water with lower temperature in the hot water tank through the water pump for heat exchange, and the heat exchange amount of the hot water tank is adjusted through judging the load of the unit.
The invention has the beneficial effects that:
the solar coils are added into the hot water tank and the air-conditioning tank, the high-temperature hot water generated by the solar heat collecting pipe heats the water in the hot water tank, the unit heating capacity and energy efficiency are increased, the hot water and air-conditioning capacity can be adjusted by adjusting the flow proportion of the two solar coils, the unit is more energy-saving and efficient, and the application is more flexible.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a structural block diagram of a solar energy and heat recovery composite heat pump system of the invention.
Fig. 2 is a flow chart of a control method of the compound heat pump system of the invention.
FIG. 3 is a flow chart of a single hot water mode control and regulation method of the present invention.
FIG. 4 is a flow chart of a single heating mode control and adjustment method of the present invention.
Reference numerals:
1-a compressor; 2-a four-way valve; 3-solar heat collecting pipe; 4-a throttling device; 5-outdoor side fin heat exchanger; 6-gas-liquid separator; 7-a hot water tank; 71-a first solar coil; 72-a first heat exchange coil; 73-a first inlet pipe; 74-first outlet pipe; 75-a first proportional solenoid valve; 76-a first one-way valve; 8-air conditioning water tank; 81-a second solar coil; 82-a second heat exchange coil; 83-a second water inlet pipe; 84-a second water outlet pipe; 85-a second proportional solenoid valve; 86-second one-way valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the load-adjustable solar energy and heat recovery combined heat pump system comprises a fluorine path system, a solar energy heat collection and exchange system, a hot water tank 7 and an air conditioning water tank 8.
The fluorine path system comprises a compressor 1, a four-way valve 2, a first heat exchange coil 72, a second heat exchange coil 82, a throttling device 4, an outdoor heat exchanger 5, a gas-liquid separator 6 and a communicating pipeline.
The compressor 1 is connected with a first heat exchange coil 72 through a pipeline, the other end of the first heat exchange coil 72 is connected with a four-way valve 2, one end of a second heat exchange coil 82 is connected with the four-way valve 2, the other end of the second heat exchange coil is connected with a throttling device 4, the other end of the throttling device 4 is connected with an outdoor heat exchanger 5, the other end of the outdoor heat exchanger 5 is connected with the four-way valve 2, and a gas-liquid separator 6 is connected with the four-way valve 2.
Specifically, the hot water tank 7 includes a first heat exchange coil 72 therein, one end of the first heat exchange coil 72 is connected to the compressor 1, and the other end is connected to the four-way valve 2.
The air conditioning water tank 8 comprises a second heat exchange coil 82, one end of the second heat exchange coil 82 is connected with the four-way valve 2, and the other end of the second heat exchange coil 82 is connected with the throttling device 4.
The solar heat collection and exchange system comprises a solar heat collection pipe 3, a water pump 9, a one-way valve, a proportional solenoid valve, a first solar coil 71, a second solar coil 81 and a communicating pipeline.
One end of the solar heat collection pipe 3 is connected with the first solar coil 71 and the second solar coil 81, and the other end of the solar heat collection pipe 3 is connected with the other ends of the first solar coil 71 and the second solar coil 81 through the water pump 9, the one-way valve and the electromagnetic valve.
The first solar coil 71 and the first heat exchange coil 72 are positioned in the hot water tank 7; the second solar coil 81 and the second heat exchange coil 82 are located in the air conditioning water tank 8.
The check valves include a first check valve 76 and a second check valve 86; the solenoid valves include a first proportional solenoid valve 75 and a second proportional solenoid valve 85.
One end of the first solar coil 71 is connected with the solar heat collecting pipe 3 through a first proportional solenoid valve 75, a first one-way valve 76 and a water pump 9.
One end of the second solar coil 81 is connected with the solar heat collecting pipe 3 through a second proportional electromagnetic valve 85, a second one-way valve 86 and a water pump 9.
The hot water tank 7 is provided with a first inlet pipe 73 and a first outlet pipe 74.
Specifically, the first heat exchange coil 72 is respectively connected with the compressor 1 and the four-way valve 2 in the fluorine path system; the first solar coil 71 is respectively connected with a first proportional electromagnetic valve 75 and the solar heat collecting pipe 3 in the solar heat collecting and exchanging system.
The air-conditioning water tank 8 is provided with a second inlet pipe 83 and a second outlet pipe 84.
And temperature sensors are arranged on the first water inlet pipe 73 and the second water inlet pipe 83 and are respectively used for measuring the water inlet temperature of the first water inlet pipe 73 and the water inlet temperature of the second water inlet pipe 83.
During heating, a refrigerant is compressed by the compressor 1, undergoes sensible heat exchange in the hot water tank 7, undergoes latent heat exchange in the four-way valve 2 and then in the air-conditioning water tank 8, and returns to the compressor 1 through the throttling device 4, the outdoor heat exchanger 5, the four-way valve 2 and the gas-liquid separator 6.
During refrigeration, a refrigerant is compressed by the compressor 1, undergoes sensible heat exchange in the hot water tank 7, undergoes latent heat exchange in the air-conditioning water tank 8 through the four-way valve 2, the outdoor heat exchanger 5 and the throttling device 4, and returns to the compressor 1 through the four-way valve 2 and the gas-liquid separator 6.
Hot water in the solar heat collecting pipe 3 is pumped by a water pump 9 and is divided into two paths, wherein one path exchanges heat in the hot water tank 7 through a first one-way valve 76, a first proportional solenoid valve 75 and a first solar coil 71 and returns to the solar heat collecting pipe 3; and the other path exchanges heat in the air conditioning water tank 8 through a second check valve 86, a second proportional electromagnetic valve 85 and a second solar coil 81 and returns to the solar heat collecting pipe 3.
A control method of a load-adjustable solar energy and heat recovery composite heat pump system comprises three basic modes and two combined modes, wherein the basic modes comprise a single hot water mode, a single heating mode and a single refrigerating mode; the two combined modes include a heating and hot water combined mode and a cooling and hot water combined mode.
The single hot water mode is that the water path of the air-conditioning water tank 8 is closed, the water path of the hot water tank 7 is opened, the refrigerant compressed by the compressor 1 releases heat in the hot water tank 7 and heats water in the hot water tank 7 through heat exchange, and the high-temperature hot water in the solar heat collection pipe 3 exchanges heat with the water in the hot water tank 7.
The single heating mode is a single heating mode, the water way of the hot water tank 7 is closed, the water way of the air-conditioning water tank 8 is opened, heat releasing latent heat exchange is carried out on a refrigerant compressed by the compressor 1 in the second heat exchange coil 82 to heat water in the air-conditioning water tank 8, heat exchange is carried out between high-temperature hot water in the solar heat collecting pipe 3 and water with lower temperature in the air-conditioning water tank 8, and the water in the air-conditioning water tank 8 is heated.
The single refrigeration mode is a single refrigeration mode, namely the waterway of the hot water tank 7 is closed, the waterway of the air-conditioning water tank 8 is opened, the refrigerant compressed by the compressor 2 releases heat in the outdoor heat exchanger 5, and enters the second heat exchange coil 82 for heat absorption and latent heat exchange to reduce the temperature of water in the air-conditioning water tank 8 through throttling of the throttling device 4.
The heating and hot water combined mode is that the hot water tank 7 and the air-conditioning water tank water path 8 are opened simultaneously, the refrigerant compressed by the compressor 1 performs sensible heat exchange in the hot water tank 7 to heat water in the hot water tank 7, and the high-temperature hot water in the solar heat collecting pipe performs heat exchange with water with lower temperature in the hot water tank 7 and the air-conditioning water tank 8 respectively through the water pump 9.
The refrigeration and hot water combined mode is that a hot water tank 7 and an air-conditioning water tank 8 are simultaneously opened, a refrigerant compressed by a compressor 1 performs sensible heat exchange in the hot water tank 7 to heat water in the water tank 7, enters an outdoor heat exchanger 5 through a four-way valve 2 after heat exchange to release heat and condense, is throttled by a throttling device 4, and enters the air-conditioning water tank 8 to perform latent heat exchange to reduce the temperature of the water in the air-conditioning water tank 8; meanwhile, high-temperature hot water in the solar heat collecting pipe 3 enters water with lower temperature in the hot water tank 7 through the water pump 9 for heat exchange.
Referring to fig. 2, the specific flow of the control method of the load-adjustable solar energy and heat recovery composite heat pump system is as follows:
s1: acquiring a target mode, and turning to S2;
s2: judging whether the mode is the single hot water mode, if so, switching to S3, and if not, switching to S4;
s3: closing the water way of the air conditioning water tank, opening the water way of the hot water tank, and performing single hot water mode control;
s4: judging whether the heating mode is the single heating mode or not, if so, switching to S5, and if not, switching to S6;
s5: closing the hot water tank waterway, opening the air-conditioning water tank waterway and performing heating control on the air-conditioning water tank waterway;
s6: judging whether the single refrigeration mode is adopted, if so, turning to S7, otherwise, turning to S8;
s7: closing the hot water tank waterway, opening the air conditioning water tank waterway, performing refrigeration control on the air conditioning water tank waterway, closing the water pump, and not participating in heat exchange by the solar heat collection and exchange system;
s8: judging whether the mode is a heating and hot water combined mode, if so, turning to S9, and if not, turning to S10;
s9: opening a hot water tank water path and an air conditioner water tank water path, wherein the hot water tank provides hot water, and the air conditioner water tank water path performs heating control;
s10: judging whether the mode is a refrigeration and hot water combined mode, if so, turning to S11, and if not, turning to S1;
s11: and opening a hot water tank water path and an air conditioner water tank water path, wherein the hot water tank provides hot water, and the air conditioner water tank water path performs refrigeration control.
Preferably, the target obtaining mode can be obtained by obtaining user input, and the user input can be obtained by the interaction module.
The specific control and regulation method of the single hot water mode comprises the following steps: firstly, the water path of the air conditioning water tank 8 is closed, the refrigerant compressed by the compressor 1 releases heat in the first heat exchange coil 72 of the hot water tank 7 and heats the water in the hot water tank 7 through heat exchange, the second proportional electromagnetic valve 85 is closed, the water pump 9 is opened, the high-temperature hot water in the solar heat collection pipe 3 enters the first solar coil 71 through the water pump 9, the first check valve 76 and the first proportional electromagnetic valve 75 to exchange heat with the water at a lower temperature in the hot water tank 7, and the water in the hot water tank 7 is heated.
Second, detect first inlet tube 73 temperature, when detecting the temperature difference rate of change of intaking and crescent, judge that heat pump set load reduces, reduce 75 apertures of first proportional solenoid valve, it is corresponding, the water flow reduces in the first solar coil 71, first solar coil 71 heat transfer volume reduces, through a period of time, if the temperature difference rate of change of intaking that detects hot water tank 7 is still increased, then reduce compressor 1 rotational speed, reduce first heat transfer coil 72 heat transfer volume, in order to reach energy-conserving effect.
When detecting hot water tank 7's the temperature difference rate of change of intaking reduces gradually, judge the unit load increase, then increase first proportion solenoid valve 75 apertures, water flow increases in first solar coil 71, the increase of first solar coil 71 heat transfer volume, through a period of time, if detect the temperature difference rate of change of intaking and still reduce, then the 1 rotational speed of compressor risees, the increase of first heat transfer coil 72 heat transfer volume to reach increase heat pump set ability, promote user experience's effect.
Referring to fig. 3, the flow of the single hot water mode control and adjustment method includes the following steps:
s31, the compressed refrigerant and the high-temperature hot water in the solar heat collecting pipe release heat and exchange heat in the hot water tank, and S32 is turned;
s32, detecting the water temperature T of the first water inlet pipe, calculating the temperature difference change rate delta T of the inlet water, and turning to S33;
s33, judging whether the delta T is gradually increased, if so, turning to S34, if not, turning to S38;
s34, reducing the opening of the first proportional solenoid valve, and turning to S35;
s35, converting to S36 after the time T1;
s36, judging whether the delta T is continuously and gradually increased, if so, turning to S37, if not, turning to S32;
s37, reducing the rotating speed of the compressor;
s38, judging whether the delta T is gradually reduced, if so, turning to S39, if not, turning to S32;
s39, increasing the opening of the first proportional solenoid valve, and turning to S310;
s310, converting to S311 after the time T2;
s311, judging whether the delta T is continuously and gradually reduced, if so, turning to S312, if not, turning to S32;
and S312, increasing the rotation speed of the compressor.
The control and regulation method of the single heating mode comprises the following steps: firstly, the water channel of the hot water tank 7 is closed, heat release latent heat exchange is carried out on a refrigerant compressed by the compressor 1 in the second heat exchange coil 82 to heat water in the air conditioning water tank 8, the first proportional electromagnetic valve 75 is closed, the water pump 9 is opened, high-temperature hot water in the solar heat collecting pipe 3 enters the second solar coil 81 through the water pump 9, the second one-way valve 86 and the second proportional electromagnetic valve 85 to exchange heat with water at a lower temperature in the air conditioning water tank 8 to heat water in the air conditioning water tank 8.
Second, detect second inlet tube 83 temperature, when detecting into water temperature difference rate of change crescent, judge that the unit load reduces, then reduce second proportion solenoid valve 85 aperture, the water flow reduces among the second solar coil 81, second solar coil 81 heat transfer volume reduces, and through a period, it still increases to detect into water temperature difference rate of change, then the rotational speed of compressor 1 reduces, and second heat transfer coil 82 heat transfer volume reduces to reach energy-conserving effect.
When detecting 8 temperature difference rate of change that intake water of air conditioning water tank reduces gradually, judge the unit load increase, then increase second proportion solenoid valve 85 aperture, the water flow increase in second solar coil 81, the increase of second solar coil 81 heat transfer volume, through a period of time, if detect the temperature difference rate of change that intake water still reduces, then rise compressor 1 rotational speed, the increase of second heat transfer coil 82 heat transfer volume to reach increase unit ability, promote user experience's effect.
Referring to fig. 4, the flow of the single heating mode control and adjustment method includes the following steps:
s51, the compressed refrigerant and the high-temperature hot water in the solar heat collecting pipe release heat and exchange heat in the hot water tank, and S52 is turned;
s52, detecting the water temperature ST of the second water inlet pipe, calculating the temperature difference change rate Delta ST of the inlet water, and turning to S53;
s53, judging whether the Delta ST is gradually increased, if so, turning to S54, if not, turning to S58;
s54, reducing the opening of the second proportional solenoid valve, and turning to S55;
s55, converting to S56 after the time T3;
s56, judging whether the Delta ST is continuously and gradually increased, if so, turning to S57, if not, turning to S52;
s57, reducing the rotating speed of the compressor;
s58, judging whether the Delta ST is gradually reduced, if so, turning to S59, if not, turning to S52;
s59, increasing the opening of the second proportional solenoid valve, and turning to S510;
s510, turning to S511 after time T4;
s511, judging whether the Delta ST is continuously and gradually reduced, if so, turning to S512, if not, turning to S52;
and S512, increasing the rotating speed of the compressor.
The control method of the single refrigeration mode comprises the following steps: the water path of the hot water tank 7 is closed, the four-way valve 2 is reversed, the refrigerant compressed by the compressor 2 releases heat in the outdoor heat exchanger 5, the refrigerant is throttled by the throttling device 4 and enters the second heat exchange coil 82 to absorb heat and exchange latent heat to reduce the temperature of the water in the air conditioning water tank 8, at the moment, the proportional first proportional electromagnetic valve 75, the proportional second electromagnetic valve 85 and the water pump 9 are closed, and the solar heat collection and exchange system does not participate in heat exchange.
The control and regulation method for the combined heating and hot water mode comprises the following steps: firstly, the hot water tank 7 and the air-conditioning water tank water path 8 are opened, the refrigerant compressed by the compressor 1 performs sensible heat exchange in the first heat exchange coil 72 of the hot water tank 7 to heat the water in the hot water tank 7, and enters the second heat exchange coil 82 of the air-conditioning water tank 8 through the four-way valve 2 after heat exchange to perform latent heat exchange to heat the water in the air-conditioning water tank 8. At this time, the water pump 9 is opened, the first proportional solenoid valve 75 and the second proportional solenoid valve 85 are opened, and the high-temperature hot water in the solar heat collecting pipe enters the first solar coil 71 and the second solar coil 81 through the water pump 9 respectively to exchange heat with the water with lower temperature in the hot water tank 7 and the air-conditioning water tank 8, so as to heat the water in the hot water tank 7 and the air-conditioning water tank 8.
Second, detect first inlet tube 73 and second inlet tube 83 temperature, when detecting first inlet tube 73 temperature difference rate of change of intaking gradually, when second inlet tube 83 temperature difference rate of change of intaking gradually reduces, the system judges that unit hot water load reduces, the load of heating increases, then 75 apertures of first proportion solenoid valve reduce, water flow reduces in first solar coil 71, first solar coil 71 heat transfer volume reduces, 85 apertures of second proportion solenoid valve increase, water flow increases in second solar coil 81, second solar coil 81 heat transfer volume increases, in order to reach and reduce hot water tank 7 heat transfer volumes, increase air-conditioning water tank 8 heat transfer volumes, complete machine energy control's effect.
Thirdly, when detecting that the temperature difference change rate of the water inlet of the first water inlet pipe 73 is gradually reduced, the temperature difference change rate of the water inlet of the second water inlet pipe 83 is gradually increased, the hot water load of the unit is increased, the heating load is reduced, then the opening of the first proportional solenoid valve 75 is increased, the water flow in the first solar coil 71 is increased, the heat exchange amount of the first solar coil 71 is increased, the opening of the second proportional solenoid valve 85 is reduced, the water flow in the second solar coil 81 is reduced, the heat exchange amount of the second solar coil 81 is reduced, so that the heat exchange amount of the hot water tank 7 is increased, the heat exchange amount of the air conditioning water tank 8 is reduced, and the energy of the whole machine is adjusted.
Fourthly, when detecting that the temperature difference change rate of the inlet water of the first water inlet pipe 73 and the second water inlet pipe 83 is gradually reduced, the system judges that the hot water load of the unit and the heating load are increased, the opening degree of the first proportional solenoid valve 75 and the opening degree of the second proportional solenoid valve 85 are increased, the water flow in the first solar coil 71 and the second solar coil 81 is increased, the heat exchange quantity of the hot water tank 7 and the air-conditioning water tank 8 is increased, the energy regulation of the whole machine is achieved, and the energy consumption is reduced.
When the temperature difference change rate of the inlet water of the first water inlet pipe 73 and the inlet water of the second water inlet pipe 83 is gradually increased, the system judges that the hot water load and the heating load of the unit are reduced, the opening degrees of the first proportional solenoid valve 75 and the second proportional solenoid valve 85 are reduced, the water flow in the first solar coil 71 and the second solar coil 81 is reduced, the heat exchange quantity of the hot water tank and the air-conditioning water tank is reduced, the energy regulation of the whole machine is achieved, and the energy consumption is reduced.
The control and regulation method for the combined refrigeration and hot water mode comprises the following steps: firstly, the water paths of the hot water tank 7 and the air-conditioning water tank 8 are opened, the refrigerant compressed by the compressor 1 performs sensible heat exchange in the first heat exchange coil 72 of the hot water tank 7 to heat the water in the water tank 7, enters the outdoor heat exchanger 5 through the four-way valve 2 after heat exchange to release heat and condense, and enters the second heat exchange coil 82 of the air-conditioning water tank 8 through throttling of the throttling device 4 to perform latent heat exchange to reduce the temperature of the water in the air-conditioning water tank 8 so as to achieve the refrigeration effect. At this time, the first proportional solenoid valve 75 and the water pump 9 are opened, the second proportional solenoid valve 85 is closed, and the high-temperature hot water in the solar heat collecting pipe 3 enters the first solar coil 71 through the water pump 9 to exchange heat with the water with a lower temperature in the hot water tank 7, so as to heat the water in the hot water tank 7.
Second, detect first inlet tube 73 temperature, when detecting into water temperature difference rate of change crescent, the system judges that the unit load reduces, then 75 apertures of first proportional solenoid valve reduce, and the water flow reduces in the first solar coil 71, and first solar coil 71 heat transfer volume reduces, through a period of time, if the system detects into water temperature difference rate of change and still increases, then the rotational speed of compressor 1 reduces, and first heat transfer coil 72 heat transfer volume reduces to reach energy-conserving effect.
Third, when detecting into water temperature difference rate of change and reducing gradually, the system judges the unit load increase, then 75 aperture increases of first proportional solenoid valve, and the water flow increases in first solar coil 71, and first solar coil 71 heat transfer volume increases, through a period of time, if the system detects into water temperature difference rate of change and still reduces, then 1 rotational speed of compressor risees, and first heat transfer coil 72 heat transfer volume increases to reach increase unit ability, promote user experience's effect.
According to the invention, the hot water tank is arranged at the exhaust end of the heat pump system, sensible heat of exhaust is recovered, the solar coils are added into the hot water tank and the air conditioning tank, high-temperature hot water generated by the solar heat collecting pipe heats water in the water tank, the heating capacity and energy efficiency of the unit are increased, and the hot water and air conditioning capacity can be adjusted by adjusting the flow ratio of the two solar coils, so that the unit is more energy-saving and efficient, and is more flexible to apply.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A load-adjustable solar energy and heat recovery composite heat pump system is characterized by comprising a fluorine path system, a solar energy heat collection and exchange system, a hot water tank (7) and an air conditioning water tank (8); the fluorine path system comprises a compressor (1), a four-way valve (2), a first heat exchange coil (72), a second heat exchange coil (82), a throttling device (4), an outdoor heat exchanger (5), a gas-liquid separator (6) and a communicating pipeline; the compressor (1) is connected with a first heat exchange coil (72) through a pipeline, the other end of the first heat exchange coil (72) is connected with a four-way valve (2), one end of a second heat exchange coil (82) is connected with the four-way valve (2), the other end of the second heat exchange coil is connected with a throttling device (4), an outdoor heat exchanger (5) at the other end of the throttling device (4) is connected, the other end of the outdoor heat exchanger (5) is connected with the four-way valve (2), and a gas-liquid separator (6) is connected with the four-way valve (2);
the solar heat collection and exchange system comprises a solar heat collection pipe (3), a water pump (9), a one-way valve, a proportional electromagnetic valve, a first solar coil (71), a second solar coil (81) and a communicating pipeline; one end of the solar heat collection pipe (3) is connected with the first solar coil pipe (71) and the second solar coil pipe (81), and the other end of the solar heat collection pipe (3) is connected with the other ends of the first solar coil pipe (71) and the second solar coil pipe (81) through a water pump (9), a one-way valve and an electromagnetic valve; the first solar coil (71) and the first heat exchange coil (72) are positioned in the hot water tank (7); the second solar coil (81) and the second heat exchange coil (82) are positioned in the air conditioning water tank (8).
2. The heat pump system of claim 1, wherein the check valve comprises a first check valve (76) and a second check valve (86); the solenoid valves include a first proportional solenoid valve (75) and a second proportional solenoid valve (85).
3. The heat pump system according to claim 2, wherein one end of the first solar coil (71) is connected to the solar heat collecting pipe (3) through a first proportional solenoid valve (75), a first check valve (76) and a water pump (9).
4. The heat pump system according to claim 2, wherein one end of the second solar coil (81) is connected with the solar heat collecting pipe (3) through a second proportional solenoid valve (85), a second one-way valve (86) and a water pump (9); one end of the second solar coil (81) is connected with the solar heat collecting pipe (3) through a second proportional electromagnetic valve (85), a second one-way valve (86) and a water pump (9).
5. Heat pump system according to claim 1, characterized in that the hot water tank (7) is provided with a first inlet pipe (73) and a first outlet pipe (74); the air conditioning water tank (8) is provided with a second water inlet pipe (83) and a second water outlet pipe (84).
6. The heat pump system according to claims 1-5, wherein the control method of the heat pump system comprises a single hot water mode, the single hot water mode is that the water path of the air conditioning water tank (8) is closed, the water path of the hot water tank (7) is opened, the refrigerant compressed by the compressor (1) releases heat in the hot water tank (7) and exchanges heat to heat the water in the hot water tank (7), the high-temperature hot water in the solar heat collecting pipe (3) exchanges heat with the water in the hot water tank (7), and the heat exchange amount of the air conditioning water tank (8) is adjusted by judging the unit load.
7. The heat pump system according to claim 6, further comprising a single heating mode, wherein the single heating mode is a single heating mode, a water path of the hot water tank (7) is closed, a water path of the air conditioning water tank (8) is opened, heat exchange between heat released from the refrigerant compressed by the compressor (1) and latent heat in the second heat exchange coil (82) is performed to heat water in the air conditioning water tank (8), heat exchange between high-temperature hot water in the solar heat collecting pipe (3) and water at a lower temperature in the air conditioning water tank (8) is performed to heat water in the air conditioning water tank (8), and meanwhile, the heat exchange amount of the air conditioning water tank (8) is adjusted by judging the unit load.
8. The heat pump system according to claim 7, further comprising a single refrigeration mode, wherein the single refrigeration mode is a hot water tank (7) water path closing mode, the air conditioning water tank (8) water path opening mode, the refrigerant compressed by the compressor (2) releases heat in the outdoor heat exchanger (5), throttles by the throttling device (4), and enters the second heat exchange coil (82) to exchange heat absorption latent heat to reduce the temperature of water in the air conditioning water tank (8).
9. The heat pump system according to claim 8, further comprising a heating and hot water combined mode, wherein the heating and hot water combined mode is that the hot water tank (7) and the air-conditioning water tank water path (8) are simultaneously opened, sensible heat exchange is performed in the hot water tank (7) by a refrigerant compressed by the compressor (1) to heat water in the hot water tank (7), high-temperature hot water in the solar heat collecting pipe is respectively subjected to heat exchange with water with lower temperature in the hot water tank (7) and the air-conditioning water tank (8) through the water pump (9), and heat exchange amount of the hot water tank (7) and the air-conditioning water tank water path (8) is adjusted by judging unit load.
10. The heat pump system according to claim 9, further comprising a combined cooling and heating mode, wherein the combined cooling and heating mode is that the hot water tank (7) and the air conditioning tank (8) are opened simultaneously, a refrigerant compressed by the compressor (1) performs sensible heat exchange in the hot water tank (7) to heat water in the water tank (7), enters the outdoor heat exchanger (5) through the four-way valve (2) after heat exchange to release heat for condensation, is throttled by the throttling device (4), and enters the air conditioning tank (8) to perform latent heat exchange to reduce the temperature of water in the air conditioning tank (8); meanwhile, high-temperature hot water in the solar heat collecting pipe (3) enters water with lower temperature in the hot water tank (7) through the water pump (9) for heat exchange, and the heat exchange amount of the hot water tank (7) is adjusted through judging the load of the unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010593223.9A CN111637658A (en) | 2020-06-26 | 2020-06-26 | Load-adjustable solar energy and heat recovery composite heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010593223.9A CN111637658A (en) | 2020-06-26 | 2020-06-26 | Load-adjustable solar energy and heat recovery composite heat pump system |
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| CN111637658A true CN111637658A (en) | 2020-09-08 |
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| CN202010593223.9A Pending CN111637658A (en) | 2020-06-26 | 2020-06-26 | Load-adjustable solar energy and heat recovery composite heat pump system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378096A (en) * | 2020-11-09 | 2021-02-19 | 青岛海信日立空调系统有限公司 | Solar energy and heating equipment linked water heater |
| CN113266946A (en) * | 2021-05-21 | 2021-08-17 | 银川艾尼工业科技开发股份有限公司 | Solar heat pump system with intelligent control of frequency conversion circulation |
-
2020
- 2020-06-26 CN CN202010593223.9A patent/CN111637658A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378096A (en) * | 2020-11-09 | 2021-02-19 | 青岛海信日立空调系统有限公司 | Solar energy and heating equipment linked water heater |
| CN113266946A (en) * | 2021-05-21 | 2021-08-17 | 银川艾尼工业科技开发股份有限公司 | Solar heat pump system with intelligent control of frequency conversion circulation |
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