CN101571330B - Multifunctional frost-free solar-assisted heat pump system - Google Patents

Multifunctional frost-free solar-assisted heat pump system Download PDF

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Publication number
CN101571330B
CN101571330B CN2009100994020A CN200910099402A CN101571330B CN 101571330 B CN101571330 B CN 101571330B CN 2009100994020 A CN2009100994020 A CN 2009100994020A CN 200910099402 A CN200910099402 A CN 200910099402A CN 101571330 B CN101571330 B CN 101571330B
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China
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interface
refrigerating medium
stop valve
links
water
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CN2009100994020A
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Chinese (zh)
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CN101571330A (en
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王勤
徐英杰
陈光明
梁国峰
陈曦
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浙江大学
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Abstract

The invention discloses a multifunctional frost-free solar-assisted heat pump system which comprises a refrigerant loop, a first secondary refrigerant loop, a second secondary refrigerant loop and a domestic hot-water bypass. The refrigerant circulating system of the invention comprises a compressor, a refrigerant stop valve, a four-way valve, a first one-way stop valve, a second one-way stop valve, a first throttling element, a second throttling element, a high-pressure liquid storage tank and a gas-liquid separator which are connected in sequence; the first secondary refrigerant loop comprises a first secondary refrigerant tank, a first secondary refrigerant pump and an indoor heat exchanger which are connected in sequence; the second secondary refrigerant loop comprises a second secondary refrigerant tank, a second secondary refrigerant pump, a cooling tower, a solar heat collector, a first secondary refrigerant stop valve, a second secondary refrigerant stop valve, a third secondary refrigerant stop valve and a fourth secondary refrigerant stop valve. The invention thoroughly solves the problems that the conventional cold/hot water heat pump and air-cooled heat pump can be frosted in winter, therefore, the invention is particularly suitable for places which are rich in solar-energy resources and in need of numerous cooling/heating air-conditioners and hot-water supply at the same time.

Description

A kind of multifunctional frost-free solar-assisted heat pump system
Technical field
The invention belongs to heat pump type air conditioner, Teat pump boiler and field of solar energy utilization, relate in particular to a kind of multifunctional frost-free solar-assisted heat pump system.
Background technology
Fossil fuel accounts for great ratio in the at present human energy that uses, and fossil fuel is faced with exhausted predicament as a kind of non-renewable energy resources, and the environmental problem that the burning fossil energy causes especially serious threat human environment of depending on for existence.Solar energy is considered to the energy that 21 century has development potentiality most as a kind of reproducible clean energy resource, but its energy density is low, and instability is the problem of maximum when using solar energy at present, and solar-assisted heat pump is a kind of good solar utilization technique.Along with the raising of people's living standard, indoor heating, indoor refrigeration and heat water and more and more become the necessary living condition of modern comfortable life, but realize that at present these living conditions all need to consume a large amount of valuable fossil fuels.Therefore, utilize solar-assisted heat pump to reduce fossil fuel consumption and have more and more great social significance.
Existing multifuctional solar assisted heat pump is many with indirect expansion type (swollen formula between abbreviation), no matter be small-sized air cooling system or medium-and-large-sized water-cooling system, all has frosting in winter problem, influences the performance of system.Particularly medium-and-large-sized system, the common more complicated of structure.In recent years, the fast development of solar water heater technology provides wide development space for an expanding solar heat-pump, combined solar thermal hydrophone technology of the present invention and hot and cold water heat pump techniques, with freeze proof refrigerating medium as heat transfer medium, utilize the heat transfer temperature difference of cooling tower minimizing refrigerating medium and air and utilize solar energy to carry out the regeneration of refrigerating medium, adopt very succinct refrigerating medium system, thoroughly solve frosting in the winter problem of traditional cold hot water heat pump and air-cooled heat pump.It is abundant to be specially adapted to solar energy resources, needs the occasion of a large amount of air conditioners and hot water supply simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of multifunctional frost-free solar-assisted heat pump system is provided.
Multifunctional frost-free solar-assisted heat pump system comprises refrigerant loop, first refrigerating medium loop, second refrigerating medium loop and four parts of domestic hot-water's branch road.Refrigerant loop is: the compressor high-pressure outlet links to each other with first interface of cold-producing medium stop valve, heat exchanger first interface of water tank respectively.Second interface of cold-producing medium stop valve links to each other with second interface of water tank heat exchanger and first interface of cross valve respectively.The 4th interface of cross valve links to each other with heat exchanger first interface of the first refrigerating medium case, and heat exchanger second interface of the first refrigerating medium case links to each other with first interface of first unidirectional stop valve and second interface of second restricting element respectively.Second interface of first unidirectional stop valve links to each other with first interface of high pressure fluid reservoir and second interface of second unidirectional stop valve respectively, and second interface of high pressure fluid reservoir links to each other with first interface of first throttle element with first interface of second restricting element respectively.Second interface of first throttle element links to each other with heat exchanger first interface of the second refrigerating medium case with first interface of second unidirectional stop valve respectively.Heat exchanger second interface of the second refrigerating medium case links to each other with the 3rd interface of cross valve, and second interface of cross valve links to each other with the compressor low pressure inlet through vapour liquid separator.First refrigerating medium loop: the 4th interface of the first refrigerating medium case links to each other with first interface of indoor heat exchanger, second interface of indoor heat exchanger links to each other with first interface of first coolant pump, and second interface of first coolant pump links to each other with the 3rd interface of the first refrigerating medium case.Second refrigerating medium loop: the 4th interface of the second refrigerating medium case links to each other with first interface of second coolant pump, second interface of second coolant pump links to each other with first interface of the second refrigerating medium stop valve and first interface of solar thermal collector respectively, second interface of the second refrigerating medium stop valve links to each other with first interface of cooling tower, and second interface of cooling tower links to each other with first interface of the first refrigerating medium stop valve.Second interface of solar thermal collector links to each other with second interface of the 3rd refrigerating medium stop valve and second interface of the 4th refrigerating medium stop valve respectively, and first interface of the 3rd refrigerating medium stop valve links to each other with second interface of the second refrigerating medium stop valve and the 3rd interface of the second refrigerating medium case respectively.First interface of the 4th refrigerating medium stop valve links to each other with first interface of refrigerating medium-water-to-water heat exchanger, and second interface of refrigerating medium-water-to-water heat exchanger links to each other with the 5th interface of the second refrigerating medium case.Domestic hot-water's branch road: cooling water inlet links to each other with the 3rd interface of refrigerating medium-water-to-water heat exchanger, and the 4th interface of refrigerating medium-water-to-water heat exchanger links to each other with the 3rd interface of water tank, and the 4th interface of water tank links to each other with indoor delivery port.
Described first throttle element or the 3rd restricting element are manual throttle valve, automatic throttle or capillary.First unidirectional stop valve or second unidirectional stop valve are hand stop valve or automatic stop valve.First unidirectional stop valve or second unidirectional stop valve can be replaced by two-way shut-off valve.Cold-producing medium stop valve, the first refrigerating medium stop valve, the second refrigerating medium stop valve, the 3rd refrigerating medium stop valve, the 4th refrigerating medium stop valve, the 5th refrigerating medium stop valve are two-way shut-off valve.
Refrigerating medium-water-to-water heat exchanger is double pipe heat exchanger or plate type heat exchanger.Water tank, the first refrigerating medium case and the second refrigerating medium case are the airtight pressure-bearing cool-bags that heat exchanger is equipped with in inside, and heat exchanger is light pipe immersion heat exchanger or nest plate pipe immersion heat exchanger in water tank, the first refrigerating medium case and the second refrigerating medium case.Indoor heat exchanger is an air cooling heat exchanger, is connected with the first refrigerating medium case by first coolant pump.Solar energy heat collector is in parallel with the second refrigerating medium case by second coolant pump with cooling tower.
The beneficial effect that the present invention compared with prior art has:
1) energy saving.The present invention can effectively utilize solar energy as the cold-producing medium evaporation energy, improves the efficient that system moves in the winter time widely, remedies common air-conditioning and there is the very low shortcoming of efficient in ordinary hot pump water heater winter operation.General room refrigerating efficiency of the present invention is equivalent to common handpiece Water Chilling Units, far above common air-cooled unit.Common heating efficiency of the present invention is equivalent to common water resource heat pump, and far above air-cooled heat pump, but the auxiliary heating efficiency of solar energy of the present invention is greater than common water resource heat pump.Ordinary hot heat pump heating water efficient of the present invention is equivalent to the ordinary hot pump water heater, but solar-assisted heat pump of the present invention heats water and solar energy hot water efficient greater than the ordinary hot pump water heater.
2) practicality.The present invention adopts very succinct mode that hot and cold water source pump and solar water heater are combined, and only can realize multiple function of use with a spot of electrically operated valve, has reduced the control difficulty, has improved reliability of operation.
3) economy.The invention solves handpiece Water Chilling Units idle problem in winter, improved utilization rate of equipment and installations, tangible economic advantages are arranged, be very beneficial for promoting.
4) security.The present invention produces the leaky that electric heater can not appear in the hot water time spent, does not also have the gassing danger of gas heater.
5) stability.Under cold winter conditions, the present invention can effectively utilize solar energy, reduces common air-conditioning and crosses the low all kinds of faults that cause because of evaporating temperature.Particularly the present invention adopts very succinct refrigerating medium system, has thoroughly solved frosting in the winter problem of traditional cold hot water heat pump and air-cooled heat pump, has improved reliability of system operation.
Description of drawings
Accompanying drawing is the system flow chart of apparatus of the present invention;
Among the figure: compressor 1, cold-producing medium stop valve 2, cross valve 3, the first refrigerating medium case 4, first unidirectional stop valve 5, second unidirectional stop valve 6, first throttle element 7, second restricting element 8, high pressure fluid reservoir 9, the second refrigerating medium case 10, water tank 11, indoor heat exchanger 12, first coolant pump 13, refrigerating medium-water-to-water heat exchanger 14, vapour liquid separator 15, the first refrigerating medium stop valve 16, the second refrigerating medium stop valve 17, the 3rd refrigerating medium stop valve 18, the 4th refrigerating medium stop valve 19, second coolant pump 20, cooling tower 21, solar thermal collector 22.
The specific embodiment
As shown in drawings, multifunctional frost-free solar-assisted heat pump system comprises refrigerant loop, first refrigerating medium loop, second refrigerating medium loop and four parts of domestic hot-water's branch road.
Refrigerant loop is: compressor 1 high-pressure outlet 1b respectively with the first interface 2a of cold-producing medium stop valve 2, the heat exchanger first interface 11a of water tank 11 links to each other, the second interface 2b of cold-producing medium stop valve 2 respectively with the second interface 11b of water tank 11 heat exchangers, the first interface 3a of cross valve 3 links to each other, the 4th interface 3d of cross valve 3 links to each other with the heat exchanger first interface 4a of the first refrigerating medium case 4, the heat exchanger second interface 4b of the first refrigerating medium case 4 respectively with the first interface 5a of first unidirectional stop valve 5, the second interface 8b of second restricting element 8 links to each other, the second interface 5b of first unidirectional stop valve 5 respectively with the first interface 9a of high pressure fluid reservoir 9, the second interface 6b of second unidirectional stop valve 6 links to each other, the second interface 9b of high pressure fluid reservoir 9 respectively with the first interface 8a of second restricting element 8, the first interface 7a of first throttle element 7 links to each other.The second interface 7b of first throttle element 7 links to each other with the first interface 6a of second unidirectional stop valve 6, the heat exchanger first interface 10a of the second refrigerating medium case 10 respectively.The heat exchanger second interface 10b of the second refrigerating medium case 10 links to each other with the 3rd interface 3c of cross valve 3, and the second interface 3b of cross valve 3 links to each other with compressor 1 low pressure inlet 1a through vapour liquid separator 15.
First refrigerating medium loop: the 4th interface 4d of the first refrigerating medium case 4 links to each other with the first interface 12a of indoor heat exchanger 12, the second interface 12b of indoor heat exchanger 12 links to each other with the first interface 13a of first coolant pump 13, and the second interface 13b of first coolant pump 13 links to each other with the 3rd interface 4c of the first refrigerating medium case 4.
Second refrigerating medium loop: the 4th interface 10d of the second refrigerating medium case 10 links to each other with the first interface 20a of second coolant pump 20, the second interface 20b of second coolant pump 20 links to each other with the first interface 17a of the second refrigerating medium stop valve 17, the first interface 22a of solar thermal collector 22 respectively, the second interface 17b of the second refrigerating medium stop valve 17 links to each other with the first interface 21a of cooling tower 21, and the second interface 21b of cooling tower 21 links to each other with the first interface 16a of the first refrigerating medium stop valve 16.The second interface 22b of solar thermal collector 22 links to each other with the second interface 18b of the 3rd refrigerating medium stop valve 18, the second interface 19b of the 4th refrigerating medium stop valve 19 respectively, and the first interface 18a of the 3rd refrigerating medium stop valve 18 links to each other with the second interface 16b of the second refrigerating medium stop valve 16, the 3rd interface 10c of the second refrigerating medium case 10 respectively.The first interface 19a of the 4th refrigerating medium stop valve 19 links to each other with the first interface 14a of refrigerating medium-water-to-water heat exchanger 14, and the second interface 14b of refrigerating medium-water-to-water heat exchanger 14 links to each other with the 5th interface 10e of the second refrigerating medium case 10.
Domestic hot-water's branch road: cooling water inlet links to each other with the 3rd interface 14c of refrigerating medium-water-to-water heat exchanger 14, and the 4th interface 14d of refrigerating medium-water-to-water heat exchanger 14 links to each other with the 3rd interface 11c of water tank 11, and the 4th interface 11d of water tank 11 links to each other with indoor delivery port.
Described first throttle element 7 or the 3rd restricting element 8 are manual throttle valve, automatic throttle or capillary.First unidirectional stop valve 5 or second unidirectional stop valve 6 are hand stop valve or automatic stop valve.First unidirectional stop valve 5 or second unidirectional stop valve 6 can be replaced by two-way shut-off valve.Cold-producing medium stop valve 2, the first refrigerating medium stop valve 15, the second refrigerating medium stop valve 16, the 3rd refrigerating medium stop valve 17, the 4th refrigerating medium stop valve 18, the 5th refrigerating medium stop valve 19 are two-way shut-off valve.
Refrigerating medium-water-to-water heat exchanger 14 is double pipe heat exchanger or plate type heat exchanger.Water tank 11, the first refrigerating medium case 4 and the second refrigerating medium case 10 are airtight pressure-bearing cool-bags that heat exchanger is equipped with in inside, and heat exchanger is light pipe immersion heat exchanger or nest plate pipe immersion heat exchanger in water tank 11, the first refrigerating medium case 4 and the second refrigerating medium case 10.Indoor heat exchanger 12 is air cooling heat exchangers, is connected with the first refrigerating medium case 4 by first coolant pump 13.Solar energy heat collector 22 is in parallel with the second refrigerating medium case 10 by second coolant pump 20 with cooling tower 21.
The present invention adopts split-type structural, indoor heat exchanger 12 need be installed in indoor, refrigerating medium-water-to-water heat exchanger 14, cooling tower 21 and compressor can be installed on outdoor from first coolant pump 13, second coolant pump 20, water tank 11, the first refrigerating medium case 4 and the not far place of the second refrigerating medium case 10, cooling tower 21, water tank 11, the first refrigerating medium case 4, the second refrigerating medium case 10, first coolant pump 13, second coolant pump 20, refrigerating medium-water-to-water heat exchanger and compressor also can be used as a global facility and are installed on the roof, and heat collector 22 is installed in the places such as roof of the strongest and maximum duration of outdoor solar radiation.Indoor set is connected with the refrigerating medium pipeline with outdoor location.The water inlet pipe of water tank 11 is connected with the building supply system, and the domestic hot-water in the water tank 11 emits for using by delivery port.
The major function pattern that the present invention can realize has: general room heats, the auxiliary indoor heating of solar energy, general room refrigeration, indoor refrigeration are held concurrently heat pump heats water, the indoor refrigeration solar-assisted heat pump of holding concurrently heats that water, ordinary hot heat pump heating water, solar-assisted heat pump heat water, regular solar heats water and refrigerating medium regeneration.Below be the detailed operation flow process of these nine kinds of functional modes:
1) general room heats
Rainy weather in the winter time or night, the water temperature that need not domestic hot-water or domestic hot-water's case has reached design temperature, but indoorly still needs heat supply.
Refrigerant loop: the cold-producing medium of HTHP comes out to enter cross valve 3 (water tank 11 is by short circuit) through cold-producing medium stop valve 2 from compressor interface 1b, flows out from cross valve interface 3d then to enter the first refrigerating medium case, 4 condensing heat-exchanges.Cold-producing medium flows out into first unidirectional stop valve 5 from interface 4b, flow to high pressure fluid reservoir 9 then, the high pressure liquid refrigerant that comes out from high pressure fluid reservoir 9 bottom interface 9b enters 7 throttlings of first throttle element, enter the second refrigerating medium case device 10 then and carry out boiling heat transfer, the gaseous refrigerant of low pressure flows out from interface 10a, returns compressor 1 after advancing cross valve 3 and vapour liquid separator 15.
First refrigerating medium loop: refrigerating medium flows out from interface 4d after cooled dose of heating in the first refrigerating medium case 4, enters indoor heat exchanger 12 and to indoor heating, cooled refrigerating medium is sent the first refrigerating medium case 4 back to after flowing through first coolant pump 13.
Second refrigerating medium loop: flow out from port one 0d after cooled dose of cooling of the refrigerating medium in the second refrigerating medium case 10, through entering cooling tower 21 and air heat exchange (this moment the 3rd refrigerating medium stop valve 18, the 4th refrigerating medium stop valve 19 close) behind second coolant pump 20 and the second refrigerating medium stop valve 17, refrigerating medium is got back to the second refrigerating medium case 10 after through the first refrigerating medium stop valve 16.
The domestic hot-water does not work in the loop.
2) the auxiliary indoor heating of solar energy
Fine in the winter time daytime, and the water temperature that need not domestic hot-water or domestic hot-water's case reached design temperature, but indoorly still need heat supply.
The refrigerant loop and first refrigerating medium loop are with scheme 1.
Second refrigerating medium loop: refrigerating medium flows out from interface 10d after cooled dose of cooling in the second refrigerating medium case 10, through entering solar thermal collector 22 behind second coolant pump, 20 pumps (this moment, the second refrigerating medium stop valve 17 was closed).Refrigerating medium here is heated, and flows out from interface 22b then, gets back to the second refrigerating medium case 10 (this moment, the first refrigerating medium stop valve 16 and the 4th refrigerating medium stop valve 19 were closed) through the 3rd refrigerating medium stop valve 18.
The domestic hot-water does not work in the loop.
3) general room refrigeration
Summer high temperature period only needs indoor refrigeration, enables when not needing the domestic hot-water.
Refrigerant loop: the high-temperature high-pressure refrigerant that comes out from compressor outlet 1b is flowed through and is flowed to cross valve 3 (water tank 11 is by short circuit) behind the cold-producing medium stop valve 2, and the interface 3c from cross valve 3 flows to the second refrigerating medium case 10 again.Second unidirectional stop valve 6 is flow through in cold-producing medium heat exchanger condensation heat release therein then, enters high pressure fluid reservoir 9.Liquid refrigerant flows to second restricting element 8 from the interface 9b of high pressure fluid reservoir 9 bottoms, low-temperature low-pressure refrigerant through throttling flows into the first refrigerating medium case, 4 boiling heat transfers, absorb the wherein heat of refrigerating medium, the cold-producing medium after the vaporization flows back to compressor 1 again through cross valve 3 and vapour liquid separator 15.
First refrigerating medium loop: refrigerating medium flows out from the outlet 13b of first coolant pump 13, enter 4 cooled doses of coolings of the first refrigerating medium case after, flow to indoor heat exchanger again, to indoor cooling, flow back to first coolant pump 13 at last again.
Second refrigerating medium loop: the refrigerating medium of high temperature flows out from the second refrigerating medium case 10, through flowing to the second refrigerating medium stop valve 17 (this moment, the 3rd refrigerating medium stop valve 18 was closed) after 20 pressurizations of second coolant pump, enters cooling tower 21 then.The refrigerating medium that is cooled flows out from cooling tower outlet 21b, gets back to the second refrigerating medium case 10 through the first refrigerating medium stop valve 16.
4) the indoor refrigeration heat pump of holding concurrently heats water
Summer high temperature period needs indoor refrigeration, also needs the domestic hot-water, but needs the hot water amount to enable more after a little while.
Refrigerant loop: the cold-producing medium of HTHP flows out from the outlet 1b of compressor 1, through the heat exchanger (cold-producing medium stop valve 2 is closed at this moment) of water tank 11, with partial condensation heat heating domestic water.Cold-producing medium flows out from the heat exchanger interface 11b of water tank 11 subsequently, enters cross valve 3, flows out from its interface 3c again, enters the second refrigerating medium case 10, the total condensation heat release.Cold-producing medium enters high pressure fluid reservoir 9 after through second unidirectional stop valve 6 then, the liquid refrigerant that flows out from its bottom interface 9b flows through the 8 back step-downs of second restricting element, and then enter the first refrigerating medium case, 4 boiling heat transfers, absorb the wherein heat of refrigerating medium, the cold-producing medium after the vaporization flows back to compressor 1 again through cross valve 3 and vapour liquid separator 15.
First refrigerating medium loop: the low temperature refrigerating medium of cooled dose of cooling flows out from the first refrigerating medium case 4, enters into indoor heat exchanger 12 to indoor cooling.Refrigerating medium flows to first coolant pump 13 from the outlet 12b of indoor heat exchanger 12 then, through flowing back into the first refrigerating medium case 4 again after 13 pressurizations of first coolant pump.
Second refrigerating medium loop: the high temperature refrigerating medium flows out from the second refrigerating medium case 10, to second coolant pump 20, enters into cooling tower 21 coolings through the second refrigerating medium stop valve 17 (this moment, the 3rd refrigerating medium stop valve 18 was closed), and heat is passed to air.Cooled refrigerating medium comes out from the outflow of cooling tower 21, gets back to the second refrigerating medium case 10 through the first refrigerating medium stop valve 16.
Domestic hot-water's branch road: cold water enters from the interface 14c of refrigerating medium-water-to-water heat exchanger 14 but does not heat, and flows into water tank 11 again, is heated to temperature required back here and flows out from interface 11d, for use.
5) the indoor refrigeration solar-assisted heat pump of holding concurrently heats water
When summer temp was low slightly, the solar energy abundance need be enabled when needing relatively large hot water again in indoor refrigeration.
Refrigerant loop, the first refrigerating medium loop flow process is with operational mode 4).
Second refrigerating medium loop: heated refrigerating medium flows out from the second refrigerating medium case 10, to second coolant pump 20, through the 3rd refrigerating medium stop valve 18, enters solar thermal collector 22.Refrigerating medium is further heated therein.Refrigerating medium is flowed through and is entered refrigerating medium-water-to-water heat exchanger behind the 4th refrigerating medium stop valve 19 then, carries out heat exchange with cold water.Cooled refrigerating medium flows out from interface 14b, gets back to the second refrigerating medium case 10.
Domestic hot-water's branch road: cold water enters from the interface 14c of refrigerating medium-water-to-water heat exchanger 14, by the refrigerating medium preheating from solar thermal collector 22, and then flows into water tank 11, is heated to temperature required then for using here.
6) ordinary hot heat pump heating water
Extremely low or overcast and rainy at temperature, solar thermal collector can not provide under the situation of heat fully, provides evaporimeter required heat by cooling tower.
Refrigerant loop: the cold-producing medium of HTHP flows out from compressor 3, enters water tank 11 (cold-producing medium stop valve 2 is closed at this moment) from interface 11a, the heating of condensation heat release here domestic hot-water.Cold-producing medium enters cross valve 3 then, flow out from cross valve interface 3d, through entering first unidirectional stop valve 5 behind the first refrigerating medium case 4, flow to high pressure fluid reservoir 9 then, the high pressure liquid refrigerant that comes out from high pressure fluid reservoir 9 bottom interface 9b enters 7 throttlings of first throttle element, enter the second refrigerating medium case 10 then and carry out boiling heat transfer, the gaseous refrigerant of low pressure flows out from interface 10a, flows back to compressor 1 again through cross valve 3 and vapour liquid separator 15.
First refrigerating medium loop is not worked.
Second refrigerating medium loop: flow out from port one 0d after cooled dose of cooling of the refrigerating medium in the second refrigerating medium case 10, through entering cooling tower 21 and air heat exchange (this moment, the 3rd refrigerating medium stop valve 18 was closed) behind second coolant pump 20 and the second refrigerating medium stop valve 17, refrigerating medium is got back to the second refrigerating medium case 10 (this moment, the 4th refrigerating medium stop valve 19 was closed) through the first refrigerating medium stop valve 16.
Domestic hot-water's branch road: cold water enters from the interface 14c of refrigerating medium-water-to-water heat exchanger 14 but does not heat, and flows into water tank 11 again, is heated to temperature required back here and flows out from interface 11d, for use.
7) solar-assisted heat pump heats water
In the lower or cloudy weather, solar energy can not directly be heated to the domestic hot-water required temperature, but plays auxiliary effect at temperature.
Refrigerant loop, first refrigerating medium loop are with operational mode 6).
Second refrigerating medium loop: flow out from port one 0d after cooled dose of cooling of the refrigerating medium in the second refrigerating medium case 10, through entering solar thermal collector 22 (this moment, the second refrigerating medium stop valve 17 was closed) after second coolant pump 20, here refrigerating medium is heated, and heating back refrigerating medium is got back to the second refrigerating medium case 10 (this moment, the first refrigerating medium stop valve 16 and the 4th refrigerating medium stop valve 19 were closed) after through the 3rd refrigerating medium stop valve 18.
Domestic hot-water's branch road: the interface 14c of cold water refrigerating medium-water-to-water heat exchanger 14 enters by refrigerating medium and heats, and flows out from interface 14d, enters domestic hot-water's case 11 then and continues to be heated.Water after the heating flows out from interface 11d, for using.
8) regular solar heats water
Transition season is in the daytime fine, the solar energy abundance.
The refrigerating circuit and first refrigerating medium loop are not worked.
Second refrigerating medium loop: refrigerating medium flows to second coolant pump 20 from the second refrigerating medium case 10, is sent to solar thermal collector 22 (the first refrigerating medium stop valve 16, the 3rd refrigerating medium stop valve 18 and the second refrigerating medium stop valve 17 are closed at this moment) then.Refrigerating medium is heated to the back here and flows out from interface 22b, enters refrigerating medium-water-to-water heat exchanger 14 and cold water heat exchange through the 4th refrigerating medium stop valve 19, so flows out from interface 14b, gets back to the second refrigerating medium case 10.
Domestic hot-water's branch road: cold water enters from the interface 14c of refrigerating medium-water-to-water heat exchanger 14, is heated by refrigerating medium, flows into water tank 11 storage then and for use.
9) refrigerating medium regeneration
If during the excess moisture that winter, refrigerating medium in use absorbed, start the moisture in this pattern removal refrigerating medium from air.Refrigerating circuit is not worked and first refrigerating medium loop is not worked.Domestic hot-water's branch road congenerous pattern 8).
Refrigerating medium flows to second coolant pump 20 from the second refrigerating medium case 10, a part is sent to solar thermal collector 22 then, and a part is sent to cooling tower 21 and air heat exchange and the moisture of removing in the refrigerating medium (this moment, the 4th refrigerating medium stop valve 19 was closed) through the second refrigerating medium stop valve 17.Refrigerating medium is heated to the back at solar thermal collector 22 and flows out from interface 22b, through the 3rd refrigerating medium stop valve 18, joins with the concentrated back refrigerating medium that flows out from the first refrigerating medium stop valve 16, gets back to the second refrigerating medium case 10 from interface 14b together.

Claims (6)

1. a multifunctional frost-free solar-assisted heat pump system is characterized in that comprising refrigerant loop, first refrigerating medium loop, second refrigerating medium loop and four parts of domestic hot-water's branch road; Refrigerant loop is: compressor (1) high-pressure outlet (1b) respectively with first interface (2a) of cold-producing medium stop valve (2), heat exchanger first interface (11a) of water tank (11) links to each other, second interface (2b) of cold-producing medium stop valve (2) respectively with second interface (11b) of water tank (11) heat exchanger, first interface (3a) of cross valve (3) links to each other, the 4th interface (3d) of cross valve (3) links to each other with heat exchanger first interface (4a) of the first refrigerating medium case (4), heat exchanger second interface (4b) of the first refrigerating medium case (4) respectively with first interface (5a) of first unidirectional stop valve (5), second interface (8b) of second restricting element (8) links to each other, second interface (5b) of first unidirectional stop valve (5) respectively with first interface (9a) of high pressure fluid reservoir (9), second interface (6b) of second unidirectional stop valve (6) links to each other, second interface (9b) of high pressure fluid reservoir (9) respectively with first interface (8a) of second restricting element (8), first interface (7a) of first throttle element (7) links to each other, second interface (7b) of first throttle element (7) respectively with first interface (6a) of second unidirectional stop valve (6), heat exchanger first interface (10a) of the second refrigerating medium case (10) links to each other, heat exchanger second interface (10b) of the second refrigerating medium case (10) links to each other with the 3rd interface (3c) of cross valve (3), second interface (3b) of cross valve (3) links to each other with compressor (1) low pressure inlet (1a) through vapour liquid separator (15), first refrigerating medium loop: the 4th interface (4d) of the first refrigerating medium case (4) links to each other with first interface (12a) of indoor heat exchanger (12), second interface (12b) of indoor heat exchanger (12) links to each other with first interface (13a) of first coolant pump (13), second interface (13b) of first coolant pump (13) links to each other with the 3rd interface (4c) of the first refrigerating medium case (4), second refrigerating medium loop: the 4th interface (10d) of the second refrigerating medium case (10) links to each other with first interface (20a) of second coolant pump (20), second interface (20b) of second coolant pump (20) respectively with first interface (17a) of the second refrigerating medium stop valve (17), first interface (22a) of solar thermal collector (22) links to each other, second interface (17b) of the second refrigerating medium stop valve (17) links to each other with first interface (21a) of cooling tower (21), second interface (21b) of cooling tower (21) links to each other with first interface (16a) of the first refrigerating medium stop valve (16), second interface (22b) of solar thermal collector (22) respectively with second interface (18b) of the 3rd refrigerating medium stop valve (18), second interface (19b) of the 4th refrigerating medium stop valve (19) links to each other, first interface (18a) of the 3rd refrigerating medium stop valve (18) respectively with second interface (16b) of the second refrigerating medium stop valve (16), the 3rd interface (10c) of the second refrigerating medium case (10) links to each other, first interface (19a) of the 4th refrigerating medium stop valve (19) links to each other with first interface (14a) of refrigerating medium-water-to-water heat exchanger (14), second interface (14b) of refrigerating medium-water-to-water heat exchanger (14) links to each other with the 5th interface (10e) of the second refrigerating medium case (10), domestic hot-water's branch road: cooling water inlet links to each other with the 3rd interface (14c) of refrigerating medium-water-to-water heat exchanger (14), the 4th interface (14d) of refrigerating medium-water-to-water heat exchanger (14) links to each other with the 3rd interface (11c) of water tank (11), and the 4th interface (11d) of water tank (11) links to each other with indoor delivery port.
2. a kind of multifunctional frost-free solar-assisted heat pump system according to claim 1 is characterized in that described first throttle element (7) or the 3rd restricting element (8) are manual throttle valve, automatic throttle or capillary.
3. a kind of multifunctional frost-free solar-assisted heat pump system according to claim 1 is characterized in that described first unidirectional stop valve (5) or second unidirectional stop valve (6) are hand stop valve or automatic stop valve.
4. a kind of multifunctional frost-free solar-assisted heat pump system according to claim 1 is characterized in that described first unidirectional stop valve (5) or second unidirectional stop valve (6) can be replaced by two-way shut-off valve.
5. a kind of multifunctional frost-free solar-assisted heat pump system according to claim 1, it is characterized in that described refrigerating medium-water-to-water heat exchanger (14) is double pipe heat exchanger or plate type heat exchanger, the interior heat exchanger of water tank (11), the first refrigerating medium case (4) or the second refrigerating medium case (10) is nest plate type heat exchanger or light pipe immersion heat exchanger.
6. a kind of multifunctional frost-free solar-assisted heat pump system according to claim 1 is characterized in that described indoor heat exchanger (12) is an air cooling heat exchanger.
CN2009100994020A 2009-06-11 2009-06-11 Multifunctional frost-free solar-assisted heat pump system CN101571330B (en)

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