CN101644483A - Heat-pump water heater based on solar energy auxiliary air source - Google Patents

Heat-pump water heater based on solar energy auxiliary air source Download PDF

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Publication number
CN101644483A
CN101644483A CN200910034230A CN200910034230A CN101644483A CN 101644483 A CN101644483 A CN 101644483A CN 200910034230 A CN200910034230 A CN 200910034230A CN 200910034230 A CN200910034230 A CN 200910034230A CN 101644483 A CN101644483 A CN 101644483A
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heat exchanger
heat
solar
magnetic valve
output
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CN200910034230A
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CN101644483B (en
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梁彩华
张小松
杜垲
朱霞
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Southeast University
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Southeast University
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Abstract

The invention provides a heat-pump water heater based on a solar energy auxiliary air source, relating to a high-efficiency water heater which organically combines solar energy and an air source heatpump, uses solar energy as an auxiliary heat source and also can use air as a heat source of a heat pump system simultaneously. A refrigeration circulation loop comprises a compressor (1), a first heat exchanger (2), a liquid accumulator (3), a filter (4), a first electronic expansion valve (5), a fin tubular heat exchanger (6), a second electronic expansion valve (7), a second heat exchanger (8),a check valve (9), a hot air electromagnetic valve (10) and a defrost electronic expansion valve (11); a solar energy auxiliary heat source loop comprises a solar energy hear collector (19), a secondheat exchanger (2), a second water pump (21), a fifth electromagnetic valve (18), a sixth electromagnetic valve (20); and a solar energy direct-heating water loop comprises a hot water accumulator (12), a first water pump (13), a first heat exchanger (2), a solar energy heat collector (19), a first electromagnetic valve (14), a second electromagnetic valve (15), a third electromagnetic valve (16)and a fourth electromagnetic valve (17).

Description

Heat-pump water heater based on solar auxiliary air source
Technical field
The present invention relates to a kind of solar energy and air source heat pump be organically combined, solar energy also can utilize the efficient hot water device for making of air as the heat pump thermal source simultaneously as auxiliary thermal source.The technical field that belongs to solar energy utilization, refrigerated air-conditioning system design and make.
Background technology
Along with improving constantly of expanding economy and people's living standard, health level, in the building energy consumption that increases fast, the shared proportion of domestic hot-water constantly increases.The domestic hot-water mainly relies on various water heaters to produce at present, and the kind of water heater mainly contains electric heater, gas heater, solar water heater etc.From the science and the reasonability of using energy source, electric heater is converted into heat energy with high-grade electric energy and produces hot water, and existing usefulness can be unreasonable greatly.Gas heater is produced hot water by the natural gas of combustion cleaning, also has the not high problem of efficient.Solar water heater is produced hot water with solar energy as the energy, from the cascaded utilization of energy angle, compare electric heater and gas heater has more reasonability, solar energy is as a kind of regenerative resource of cleaning simultaneously, the extensive application of solar energy is significant to alleviating the energy shortage problem that is faced at present, also is simultaneously one of effective way.
But solar energy has characteristics such as intermittent and thin property, makes the use of solar water heater be subjected to the influence of Changes in weather bigger, the instability that causes solar water heater to use.Air source heat pump have use flexibly, convenient, can realize heating throughout the year, being subjected to advantages such as weather effect is less, air source heat pump and solar energy combination can if can be solved the instability problem of solar energy.At present, in the solar auxiliary air source heat pump hot-water heating system, all be only as the thermal source of air source heat pump with solar energy, further promote by the grade of heat pump wasted work solar energy, produce hot water, perhaps solar energy utilization and air source heat pump are got up independently of one another, only when not enough replenishes heat pump as solar energy, the advantage of solar energy and heat pump combination be can not give full play to, the utilization ratio of solar energy and the performance of heat pump improved.There is the defrosting problem in air source heat pump when heating water in the winter time, and the defrost process complexity of present air source heat pump system influences heating water-based energy, security reliability and life-span of air source heat pump.
Therefore, how solar energy and air source heat pump are combined, realize the efficient utilization of solar energy and the high-performance of heat pump, the defrosting problem when resolution system is produced hot water winter preferably becomes the technical barrier that those skilled in the art press for solution.
Summary of the invention
Technical problem: the objective of the invention is solar energy and air source heat pump are combined, realize the efficient utilization of solar energy and the high-performance of heat pump, defrosting problem when resolution system is produced hot water winter, develop a kind of simple in structure, reliably based on the heat-pump water heater of solar auxiliary air source.
Technical scheme: the heat-pump water heater that the present invention is based on solar auxiliary air source comprises that refrigeration cycle, solar-assisted heat resource loop, solar energy directly heat water loop three parts.Refrigeration cycle comprises compressor, first heat exchanger, reservoir, filter, first electric expansion valve, fin-tube heat exchanger, second electric expansion valve, second heat exchanger, check valve, hot gas solenoid valve, defrosting electric expansion valve and relevant connection pipeline thereof.After coming out, divides compressor output end two-way, one the tunnel meets the first heat exchanger first input end 2a, lead up to hot gas solenoid valve in addition, the defrosting electric expansion valve connects the fin-tube heat exchanger input, first heat exchanger, the first output 2b is through reservoir, be divided into two-way behind the filter, first electric expansion valve of leading up to connects the fin-tube heat exchanger input, the fin-tube heat exchanger output connects the compressor input by check valve, second electric expansion valve of leading up in addition meets the second heat exchanger first input end 8a, and second heat exchanger, the first output 8b also connects the compressor input.
The solar-assisted heat resource loop comprises solar thermal collector, second heat exchanger, second water pump, the 5th magnetic valve, the 6th magnetic valve and relevant connection pipeline thereof.Second heat exchanger, the second output 8d connects the second water pump input, and the second water pump output connects the solar thermal collector input by the 6th magnetic valve, and the solar thermal collector output meets second heat exchanger, the second input 8c by the 5th magnetic valve; Solar energy directly heats water loop and comprises hot water tank, first water pump, first heat exchanger, solar thermal collector, first magnetic valve, second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve and relevant connection pipeline thereof.The hot water tank output termination first water pump input, the first water pump output minute two-way that comes out, one the tunnel meets first heat exchanger, the second input 2c, other one the tunnel through merging with first heat exchanger, the second output 2d behind first magnetic valve, divide two-way after the merging again, second magnetic valve of leading up to connects the input of hot water tank, and the 3rd magnetic valve of leading up in addition connects the solar thermal collector input, and the solar thermal collector output also connects the hot water tank input through the 4th magnetic valve.
The first output 8b is equipped with first temperature sensor, first pressure sensor at second heat exchanger.At the fin-tube heat exchanger output second temperature sensor is housed, second pressure sensor.On near the fin the fin-tube heat exchanger output, three-temperature sensor is housed, experiences the fin surface temperature.
The novel heat-pump water heater that the present invention is based on solar auxiliary air source comprises three closed circuits: refrigeration cycle, solar-assisted heat resource loop, solar energy directly heat water loop.Concrete grammar of the present invention is:
When there not being the solar time, refrigeration cycle, solar energy directly heat water loop work, and the solar-assisted heat resource loop is not worked.In the refrigeration cycle, cold-producing medium is sucked the compression back by compressor and discharges, enter first heat exchanger, cold-producing medium condensation is therein emitted heat, coolant-temperature gage is raise, cold-producing medium is after pass through reservoir, filter successively after first heat exchanger comes out, entered fin-tube heat exchanger by (this moment, second electric expansion valve was closed fully) after the first electric expansion valve throttling step-down, cold-producing medium absorbs heat therein, evaporates, fully after the evaporation, come out to be sucked by compressor compression once more, so circulation through check valve from fin-tube heat exchanger.Solar energy directly heats in the water loop, hot water pressurizes through first water pump after the hot water tank output flows out, enter in first heat exchanger,, absorb heat with the cold-producing medium heat exchange, temperature raises, get back to hot water tank once more through second magnetic valve after coming out from first heat exchanger then, so circulation constantly raises the hot water temperature in the hot water tank, up to the upper limit of design temperature, whole device will quit work.In the solar-assisted heat resource loop, the 5th magnetic valve, the 6th magnetic valve are all closed, and second water pump is not worked.
Hour (be that the solar radiation available heat is less than or equal to the radiation loss of hot water in solar thermal collector in the hot water tank, the solar radiation available heat refers to hot water absorbent heat in solar thermal collector when intensity of solar radiation.When being higher than environment temperature because of the hot water tank hot water temperature, there is radiation loss in hot water in solar thermal collector), refrigeration cycle, solar-assisted heat resource loop, solar energy directly heat water loop and all work.In the refrigeration cycle, cold-producing medium is sucked the compression back by compressor and discharges, enter first heat exchanger, cold-producing medium is emitted the heat condensation therein, the hot water temperature is raise, cold-producing medium passes through reservoir successively then, behind the filter, be divided into two-way, one the tunnel enters fin-tube heat exchanger through first electric expansion valve, cold-producing medium evaporates therein, heat absorption, sucked by compressor through check valve after the evaporation fully, other one road cold-producing medium enters second heat exchanger after by the second electric expansion valve throttling, cold-producing medium therein with the solar-assisted heat resource loop in water carry out the heat exchange evaporation, absorb the heat in the water, fully evaporation back from second heat exchanger, come out with other one tunnel refrigerant mixed after sucked compression once more, so circulation by compressor.In the solar-assisted heat resource loop, water absorbs solar energy from solar thermal collector, temperature enters second heat exchanger through the 5th magnetic valve after raising, water therein with the cold-producing medium heat exchange, emit heat, temperature reduces, and water enters solar thermal collector through second water pump, the 6th magnetic valve after coming out from second heat exchanger, absorb heat once more, so circulation.Solar energy directly heats in the water loop, hot water pressurizes through first water pump after the hot water tank output flows out, enter in first heat exchanger, with the cold-producing medium heat exchange, absorb heat, temperature raises, and gets back to hot water tank once more through second magnetic valve after coming out from first heat exchanger then, so circulation.
When intensity of solar radiation is big (solar radiation available heat greater than hot water tank in the radiation loss of hot water in solar thermal collector), refrigeration cycle, solar energy directly heat water loop work, and the solar-assisted heat resource loop is not worked.In the refrigeration cycle, cold-producing medium is sucked the compression back by compressor and discharges, enter first heat exchanger, cold-producing medium condensation is therein emitted heat, coolant-temperature gage is raise, cold-producing medium is after pass through reservoir, filter successively after first heat exchanger comes out, entered fin-tube heat exchanger by the first electric expansion valve throttling step-down (this moment, second electric expansion valve was closed fully), cold-producing medium absorbs heat therein, evaporates, fully after the evaporation, come out to be sucked by compressor compression once more, so circulation through check valve from fin-tube heat exchanger.Solar energy directly heats in the water loop, after flowing out from the hot water tank output, hot water, enters in first heat exchanger, with the cold-producing medium heat exchange through the pressurization of first water pump, absorb heat, temperature raises, and enters solar thermal collector through the 3rd magnetic valve after coming out from first heat exchanger then, and hot water absorbs solar energy, after temperature further raises, flow out from the solar thermal collector output, through entering hot water tank behind the 4th magnetic valve, so circulation.In the solar-assisted heat resource loop, the 5th magnetic valve, the 6th magnetic valve are all closed, and second water pump is not worked.
When intensity of solar radiation is enough big (solar thermal collector can be in official hour in hot water when being heated to design temperature) separately with hot water tank, refrigeration cycle, solar-assisted heat resource loop are not worked, and solar energy directly heats water loop work.Solar energy directly heats in the water loop, hot water pressurizes through first water pump after the hot water tank output flows out, by entering solar thermal collector behind first magnetic valve, the 3rd magnetic valve, hot water absorbs solar energy, temperature flows out from the solar thermal collector output, through entering hot water tank behind the 4th magnetic valve after further raising, so circulation makes the hot water temperature in the hot water tank constantly be increased to setting value.
When winter air source heat pump when the frosting phenomenon occurring than low ambient temperature operation, need to defrost behind the air source heat pump operation certain hour.When heat pump defrosts, in the refrigeration cycle, first electric expansion valve, second electric expansion valve is all closed fully, the superheated vapor that becomes HTHP after cold-producing medium is compressed by the compressor suction is discharged, the superheated vapor of HTHP is through hot gas solenoid valve with by after the throttling of defrosting electric expansion valve, the superheated vapor that becomes low-voltage high-temperature enters fin-tube heat exchanger, cold-producing medium carries out heat exchange by frost layer on tube wall and fin and the fin in fin-tube heat exchanger, emit heat, melt the frost layer, self temperature reduces, after cold-producing medium comes out from fin-tube heat exchanger through being sucked by compressor behind the check valve, compression is circulation once more.All remove (when three-temperature sensor is experienced the fin temperature and is higher than a certain temperature up to the fin surface of fin-tube heat exchanger frost layer, as 10 ℃, think that fin surface frost layer eliminates), air source heat pump is closed hot gas solenoid valve then, the defrosting electric expansion valve finishes defrosting, open first electric expansion valve or first electric expansion valve, second electric expansion valve, switch back and normally heat water running.
First temperature sensor, first pressure sensor are experienced the temperature and pressure of the second heat exchanger exit cold-producing medium, carry out the parameter of flow-control as second electric expansion valve after being translated into the refrigerant superheat degree, thereby guarantee that the second heat exchanger exit degree of superheat is constant.Second temperature sensor, second pressure sensor are experienced the refrigerant temperature and the pressure of fin-tube heat exchanger outlet, by being translated into the parameter of carrying out flow-control as first electric expansion valve behind the refrigerant superheat degree, thereby guarantee that the fin-tube heat exchanger outlet degree of superheat is constant.
The present invention is based on the novel heat-pump water heater of solar auxiliary air source, when solar radiation intensity less, during the work of solar-assisted heat resource loop, the fin-tube heat exchanger and second heat exchanger are worked simultaneously, because the existence of solar energy, the temperature that flows into water in second heat exchanger also raises, make that the evaporating temperature of cold-producing medium is improved in second heat exchanger, because the existence of check valve, make that the evaporating temperature of cold-producing medium also improves in the fin-tube heat exchanger thereupon, thereby the efficient of system is improved.
During this device winter operation, the key of defrost cycle operation is, by regulating the refrigerant flow that the valve regulation of defrosting electronic expansion enters fin-tube heat exchanger, pressure when promptly regulating refrigerant pressure in the fin-tube heat exchanger and being lower than normal operation, make cold-producing medium cooling in fin-tube heat exchanger cool off and condensation not occur, thereby guarantee reliability service in the whole defrost cycle.
Beneficial effect: the present invention relates to a kind of novel heat-pump water heater, can realize the associating of solar energy and air source heat pump, no matter the height of solar radiation intensity all can utilize solar energy to produce hot water efficiently, easily based on solar auxiliary air source.Taked a kind of novel Defrost mode simultaneously, simplified the process of air source heat pump hot water device defrosting, have simple in structure, the reliability advantages of higher.
Description of drawings
Fig. 1 is the heat-pump water heater schematic diagram that the present invention is based on solar auxiliary air source.
Have among Fig. 1: compressor 1; First heat exchanger 2; The first heat exchanger first input end 2a; First heat exchanger, the first output 2b; First heat exchanger, the second input 2c; First heat exchanger, the second output 2d; Reservoir 3; Filter 4; First electric expansion valve 5; Fin-tube heat exchanger 6; Second electric expansion valve 7; Second heat exchanger 8; The second heat exchanger first input end 8a; Second heat exchanger, the first output 8b; Second heat exchanger, the second input 8c; Second heat exchanger, the second output 8d; Check valve 9; Hot gas solenoid valve 10; Defrosting electric expansion valve 11; Hot water tank 12; First water pump 13; First magnetic valve 14; Second magnetic valve 15; The 3rd magnetic valve 16; The 4th magnetic valve 17; The 5th magnetic valve 18; Solar thermal collector 19; The 6th magnetic valve 20; Second water pump 21; First temperature sensor 22; First pressure sensor 23; Second temperature sensor 24; Second pressure sensor 25; Three-temperature sensor 26.
The specific embodiment
1 further specify the specific embodiment of the present invention in conjunction with the accompanying drawings, the heat-pump water heater that the present invention is based on solar auxiliary air source comprises that refrigeration cycle, solar-assisted heat resource loop, solar energy directly heat water loop.Concrete method of attachment is: divide two-way after compressor 1 output comes out, one the tunnel meets the first heat exchanger first input end 2a, lead up to hot gas solenoid valve 10 in addition, defrosting electric expansion valve 11 connects fin-tube heat exchanger 6 inputs, first heat exchanger, the first output 2b is through reservoir 3, be divided into two-way behind the filter 4, first electric expansion valve 5 of leading up to connects fin-tube heat exchanger 6 inputs, fin-tube heat exchanger 6 outputs connect compressor 1 input by check valve 9, second electric expansion valve 7 of leading up in addition meets the second heat exchanger first input end 8a, and second heat exchanger, the first output 8b also connects compressor 1 input.Second heat exchanger, the second output 8d connects second water pump, 21 inputs, and second water pump, 21 outputs connect solar thermal collector 19 inputs by the 6th magnetic valve 20, and solar thermal collector 19 outputs meet second heat exchanger, the second input 8c by the 5th magnetic valve 18.Hot water tank 12 output terminations first water pump 13 inputs, first water pump, the 13 outputs minute two-way that comes out, one the tunnel meets first heat exchanger, the second input 2c, other one the tunnel through first magnetic valve, 14 backs and first heat exchanger, second output 2d merging, divide two-way after the merging again, second magnetic valve 15 of leading up to connects the input of hot water tank 12, the 3rd magnetic valve 16 of leading up in addition connects solar thermal collector 19 inputs, and solar thermal collector 19 outputs also connect hot water tank 12 inputs through the 4th magnetic valve 17.
At second heat exchanger, the first output 8b first temperature sensor 22, first pressure sensor 23 are housed.At fin-tube heat exchanger 6 outputs second temperature sensor, 24, the second pressure sensors 25 are housed.On near the fin fin-tube heat exchanger 6 outputs, three-temperature sensor 26 is housed, experiences the fin surface temperature.
The hot-water heating system operation, when there not being the solar time, refrigeration cycle, solar energy directly heat water loop work, and the solar-assisted heat resource loop is not worked.In the refrigeration cycle, cold-producing medium is sucked the compression back by compressor 1 and discharges, enter first heat exchanger 2 (this moment, hot gas solenoid valve 10 was closed), cold-producing medium condensation is therein emitted heat, coolant-temperature gage is raise, cold-producing medium passes through reservoir 3 successively after first heat exchanger 2 comes out, behind the filter 4, entered fin-tube heat exchanger 6 by (this moment, second electric expansion valve 7 was closed) after the 5 throttling step-downs of first electric expansion valve, cold-producing medium absorbs heat therein, evaporation, fully after the evaporation, come out to be sucked by compressor 1 compression once more, so circulation through check valve 9 from fin-tube heat exchanger 6.Solar energy directly heats in the water loop, after flowing out from hot water tank 12 outputs, hot water pressurizes through first water pump 13, enter (this moment, first magnetic valve 14 cut out) in first heat exchanger 2, with the cold-producing medium heat exchange, absorb heat, temperature raises, get back to hot water tank (the 3rd magnetic valve 16, the 4th magnetic valve 17 are closed at this moment) once more through second magnetic valve 15 after from first heat exchanger 2, coming out then, so circulation, hot water temperature in the hot water tank 12 is constantly raise, up to the upper limit of design temperature, whole device will quit work.In the solar-assisted heat resource loop, the 5th magnetic valve 18, the 6th magnetic valve 20 are all closed, and second water pump 21 is not worked.
The hot-water heating system operation, when intensity of solar radiation hour (is that the solar radiation available heat is less than or equal to the radiation loss of hot water in solar thermal collector 19 in the hot water tank 12, the solar radiation available heat refers to hot water absorbent heat in solar thermal collector 19, when being higher than environment temperature because of hot water tank 12 hot water temperatures, there is radiation loss in hot water in solar thermal collector 19), refrigeration cycle, solar-assisted heat resource loop, solar energy directly heat water loop and all work.In the refrigeration cycle, cold-producing medium is sucked the compression back by compressor 1 and discharges, enter first heat exchanger 2 (this moment, hot gas solenoid valve 10 was closed), cold-producing medium is emitted the heat condensation therein, the hot water temperature is raise, cold-producing medium passes through reservoir 3 successively then, behind the filter 4, be divided into two-way, one the tunnel enters fin-tube heat exchanger 6 through first electric expansion valve 5, cold-producing medium evaporates therein, heat absorption, sucked by compressor 1 through check valve 9 after the evaporation fully, other one road cold-producing medium enters second heat exchanger 8 after by 7 throttlings of second electric expansion valve, cold-producing medium therein with the solar-assisted heat resource loop in water carry out the heat exchange evaporation, absorb the heat in the water, fully evaporation back from second heat exchanger 8, come out with other one tunnel refrigerant mixed after sucked compression once more, so circulation by compressor 1.In the solar-assisted heat resource loop, water absorbs solar energy from solar thermal collector 19, after raising, temperature enters second heat exchanger 8 (this moment, the 4th magnetic valve 17 cut out) through the 5th magnetic valve 18, water therein with the cold-producing medium heat exchange, emit heat, temperature reduces, and enters solar thermal collector 19 (this moment, the 3rd magnetic valve 16 cut out) through second water pump 21, the 6th magnetic valve 20 after water comes out from second heat exchanger 8, absorb heat once more, so circulation.Solar energy directly heats in the water loop, after flowing out from hot water tank 12 outputs, hot water pressurizes through first water pump 13, enter (this moment, first magnetic valve 14 cut out) in first heat exchanger 2, with the cold-producing medium heat exchange, absorb heat, temperature raises, and gets back to hot water tank 12 (the 3rd magnetic valve 16, the 4th magnetic valve 17 are closed at this moment), so circulation once more through second magnetic valve 15 after coming out from first heat exchanger 2 then.
The hot-water heating system operation, when intensity of solar radiation is big (solar radiation available heat greater than hot water tank 12 in the radiation loss of hot water in solar thermal collector 19), refrigeration cycle, solar energy directly heat water loop work, and the solar-assisted heat resource loop is not worked.In the refrigeration cycle, cold-producing medium is sucked the compression back by compressor 1 and discharges, enter first heat exchanger 2, cold-producing medium condensation is therein emitted heat, coolant-temperature gage is raise, cold-producing medium is after pass through reservoir 3, filter 4 successively after first heat exchanger 2 comes out, entered fin-tube heat exchanger 6 by first electric expansion valve, 5 throttling step-downs (this moment, second electric expansion valve 7 was closed), cold-producing medium absorbs heat therein, evaporates, fully after the evaporation, come out to be sucked by compressor 1 compression once more, so circulation through check valve 9 from fin-tube heat exchanger 6.Solar energy directly heats in the water loop, after flowing out from hot water tank 12 outputs, hot water pressurizes through first water pump 13, enter (this moment, first magnetic valve 14 cut out) in first heat exchanger 2, with the cold-producing medium heat exchange, absorb heat, temperature raises, enter solar thermal collector 19 (this moment, second magnetic valve 15 cut out) through the 3rd magnetic valve 16 after from first heat exchanger 2, coming out then, hot water absorbs solar energy, after temperature further raises, flow out from solar thermal collector 19 outputs, through entering hot water tank 12 behind the 4th magnetic valve 17, so circulation.In the solar-assisted heat resource loop, the 5th magnetic valve 18, the 6th magnetic valve 20 are all closed, and second water pump 21 is not worked.
The hot-water heating system operation, when intensity of solar radiation is enough big (solar thermal collector 19 can be in official hour in hot water when being heated to design temperature) separately with hot water tank 12, refrigeration cycle, solar-assisted heat resource loop are not worked, and solar energy directly heats water loop work.Solar energy directly heats in the water loop, after flowing out from hot water tank 12 outputs, hot water pressurizes through first water pump 13, by entering solar thermal collector 19 (this moment, second magnetic valve 15 cut out) behind first magnetic valve 14, the 3rd magnetic valve 16, hot water absorbs solar energy, after temperature further raises, flow out from solar thermal collector 19 outputs, through entering hot water tank 12 (the 5th magnetic valve 18, the 6th magnetic valve 20 are all closed at this moment) behind the 4th magnetic valve 17, so circulation makes the hot water temperature in the hot water tank 12 constantly be increased to setting value.
The hot-water heating system winter operation, in the time of need defrosting, in the refrigeration cycle, first electric expansion valve 5, second electric expansion valve 7 is all closed fully, the superheated vapor that becomes HTHP after cold-producing medium is compressed by compressor 1 suction is discharged, the superheated vapor of HTHP is through hot gas solenoid valve 10 with by after 11 throttlings of defrosting electric expansion valve, the superheated vapor that becomes low-voltage high-temperature enters fin-tube heat exchanger 6, cold-producing medium carries out heat exchange by frost layer on tube wall and fin and the fin in fin-tube heat exchanger 6, emit heat, melt the frost layer, self temperature reduces, and cold-producing medium is sucked by compressor 1 through check valve 9 after fin-tube heat exchanger 6 comes out, compression is circulation once more.All remove (when three-temperature sensor 26 is experienced the fin temperature and is higher than a certain temperature up to the fin surface of fin-tube heat exchanger 6 frost layer, as 10 ℃, think that fin surface frost layer eliminates), air source heat pump is closed hot gas solenoid valve 10 then, defrosting electric expansion valve 11 finishes defrosting, open first electric expansion valve 5 or first electric expansion valve 5, second electric expansion valve 7, switch back and normally heat water running.

Claims (5)

1. the heat-pump water heater based on solar auxiliary air source is characterized in that this device comprises that refrigeration cycle, solar-assisted heat resource loop, solar energy directly heat water loop; Refrigeration cycle comprises compressor (1), first heat exchanger (2), reservoir (3), filter (4), first electric expansion valve (5), fin-tube heat exchanger (6), second electric expansion valve (7), second heat exchanger (8), check valve (9), hot gas solenoid valve (10), defrosting electric expansion valve (11) and relevant connection pipeline thereof; Two-way is divided in compressor (1) the output back of coming out, and one the tunnel connects the first heat exchanger first input end (2a), leads up to hot gas solenoid valve (10), defrosting electric expansion valve (11) in addition to connect fin-tube heat exchanger (6) input; First heat exchanger, first output (2b) is divided into two-way through reservoir (3), filter after (4), first electric expansion valve (5) of leading up to connects fin-tube heat exchanger (6) input, fin-tube heat exchanger (6) output connects compressor (1) input by check valve (9), second electric expansion valve (7) of leading up in addition connects the second heat exchanger first input end (8a), and second heat exchanger, first output (8b) also connects compressor (1) input;
The solar-assisted heat resource loop comprises solar thermal collector (19), second heat exchanger (2), second water pump (21), the 5th magnetic valve (18), the 6th magnetic valve (20) and relevant connection pipeline thereof, second heat exchanger, second output (8d) connects second water pump (21) input, second water pump (21) output connects solar thermal collector (19) input by the 6th magnetic valve (20), and solar thermal collector (19) output connects second heat exchanger, second input (8c) by the 5th magnetic valve (18);
Solar energy directly heats water loop and comprises hot water tank (12), first water pump (13), first heat exchanger (2), solar thermal collector (19), first magnetic valve (14), second magnetic valve (15), the 3rd magnetic valve (16), the 4th magnetic valve (17) and relevant connection pipeline thereof; Hot water tank (12) output termination first water pump (13) input, first water pump (13) the output minute two-way that comes out, one the tunnel connects first heat exchanger, second input (2c), other one the tunnel through first magnetic valve (14) back and first heat exchanger, second output (2d) merging, divide two-way after the merging again, second magnetic valve (15) of leading up to connects the input of hot water tank (12), the 3rd magnetic valve (16) of leading up in addition connects solar thermal collector (19) input, and solar thermal collector (19) output also connects hot water tank (12) input through the 4th magnetic valve (17).
2. the heat-pump water heater based on solar auxiliary air source according to claim 1, first heat exchanger (2) and practicable being connected in series of solar thermal collector (19) that it is characterized in that air source heat pump system, first heat exchanger (2) is preceding, solar thermal collector (19) after.
3. the heat-pump water heater based on solar auxiliary air source according to claim 1 is characterized in that at second heat exchanger, first output (8b) first temperature sensor (22), first pressure sensor (23) being housed.
4. the heat-pump water heater based on solar auxiliary air source according to claim 1, it is characterized in that second temperature sensor (24) being housed at fin-tube heat exchanger (6) output, second pressure sensor (25) is equipped with three-temperature sensor (26) near the fin the fin-tube heat exchanger output.
5. the heat-pump water heater based on solar auxiliary air source according to claim 1 is characterized in that compressor (1) is a variable displacement compressor.
CN2009100342309A 2009-08-26 2009-08-26 Heat-pump water heater based on solar energy auxiliary air source Expired - Fee Related CN101644483B (en)

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CN103335454A (en) * 2013-06-21 2013-10-02 安徽中家智锐科技有限公司 Air source heat pump device with solar hot water auxiliary defrosting function and use method thereof
CN104061763A (en) * 2014-06-30 2014-09-24 广东都灵新能源科技有限公司 Multi-heat-source drying room system with geothermal pipe and double dehumidification devices
CN105333480A (en) * 2015-11-30 2016-02-17 佛山欧思丹热能科技有限公司 Multi-energy combined heating system
CN106288426A (en) * 2016-11-01 2017-01-04 山东华临新能源设备有限公司 The foolproof heat pump of efficient and convenient installation
CN108302838A (en) * 2017-08-15 2018-07-20 东北电力大学 A kind of heat-storage solar energy coupling air source heat pump system and its control method
CN110243007A (en) * 2019-06-13 2019-09-17 科希曼电器有限公司 A kind of air source heat pump system of solar energy auxiliary

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CN102200349A (en) * 2011-04-24 2011-09-28 何斌 Comprehensive heating device with water temperature gradient
CN102200349B (en) * 2011-04-24 2012-10-10 何斌 Comprehensive heating device with water temperature gradient
CN103335454A (en) * 2013-06-21 2013-10-02 安徽中家智锐科技有限公司 Air source heat pump device with solar hot water auxiliary defrosting function and use method thereof
CN103335454B (en) * 2013-06-21 2015-07-29 安徽中家智锐科技有限公司 The heat pump apparatus of air source of solar water assisting defrosting and using method thereof
CN104061763A (en) * 2014-06-30 2014-09-24 广东都灵新能源科技有限公司 Multi-heat-source drying room system with geothermal pipe and double dehumidification devices
CN104061763B (en) * 2014-06-30 2016-01-20 广东都灵新能源科技有限公司 The barn system of multi-heat source band geothermal tube and two dehydrating unit
CN105333480A (en) * 2015-11-30 2016-02-17 佛山欧思丹热能科技有限公司 Multi-energy combined heating system
CN105333480B (en) * 2015-11-30 2020-01-21 佛山欧思丹热能科技有限公司 Multi-energy composite heating system
CN106288426A (en) * 2016-11-01 2017-01-04 山东华临新能源设备有限公司 The foolproof heat pump of efficient and convenient installation
CN108302838A (en) * 2017-08-15 2018-07-20 东北电力大学 A kind of heat-storage solar energy coupling air source heat pump system and its control method
CN110243007A (en) * 2019-06-13 2019-09-17 科希曼电器有限公司 A kind of air source heat pump system of solar energy auxiliary

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