CN102840716A - Heat pump system and control method thereof - Google Patents
Heat pump system and control method thereof Download PDFInfo
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- CN102840716A CN102840716A CN2011101739017A CN201110173901A CN102840716A CN 102840716 A CN102840716 A CN 102840716A CN 2011101739017 A CN2011101739017 A CN 2011101739017A CN 201110173901 A CN201110173901 A CN 201110173901A CN 102840716 A CN102840716 A CN 102840716A
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 claims description 55
- 239000012530 fluid Substances 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 abstract description 35
- 230000000694 effects Effects 0.000 abstract description 17
- 238000001816 cooling Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 40
- 239000003507 refrigerant Substances 0.000 description 24
- 238000005057 refrigeration Methods 0.000 description 24
- 125000004122 cyclic group Chemical group 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- 230000009102 absorption Effects 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 12
- 238000009833 condensation Methods 0.000 description 12
- 230000005494 condensation Effects 0.000 description 12
- 239000002826 coolant Substances 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 11
- 230000001105 regulatory effect Effects 0.000 description 10
- 230000009182 swimming Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 7
- 238000007791 dehumidification Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a heat pump system and a control method thereof. The heat pump system includes: a compressor (1); a first four-way valve (2); a second four-way valve (3); a third four-way valve (4); a first heat exchanger (5); a second heat exchanger (6); a third heat exchanger (7); a fourth heat exchanger (8); a first throttling assembly; a second throttling assembly; a third throttling assembly; the fourth throttling component enables the heating or cooling effect of the heat pump system to be better through the invention.
Description
Technical field
The present invention relates to art of heat pumps, in particular to a kind of heat pump and control method thereof.
Background technology
Swimming pool air-conditioning product is a lot of in the market, and its major function comprises the indoor air constant temperature of swimming pool, dehumidifying and the heating of pond water termostat.More advanced swimming pool heat pump product is Ji Chishui heating, indoor air dehumidification and room air refrigeration, heats in one.But there is following shortcoming in this heat pump: at first; When pool water within heats for the first time; Unit is realized the Chi Shui heating through the air heat energy in the extraction chamber; This mode of heating has reduced indoor air temperature when heating by the unit pool water within, and indoor temperature descends gradually, can influence the heats of Chi Shui; The swimming pool that has adds the thermal recovery alternate manner at first Chi Shui and heats, and such as high-temperature steam heating, auxiliary electrical heating etc., these mode of heating power consumptions are big, can not realize purpose of energy saving; Secondly, when summer, pond water temperature was higher, unit can't be realized directly lowering the temperature to Chi Shui; Can only realize the indirect cooling of Chi Shui through freezing to air cooling-down; Adopt this mode to make that easily air themperature is lower, when the swimmer when Chi Shuizhong comes out, catch a cold easily even catch a cold; The 3rd, sometimes need auxiliary electrical firing equipment to provide heat just can keep indoor temperature when heating to Chi Shui winter; At last, the low and systemic-function of unit internal unit utilization rate causes unit utilization scope narrow and small less.
Heat or the problem of poor refrigerating efficiency to heat pump in the correlation technique, do not propose effective solution at present as yet.
Summary of the invention
Main purpose of the present invention is to provide a kind of heat pump and control method thereof, and heat pump heats or the problem of poor refrigerating efficiency to solve.
To achieve these goals, according to an aspect of the present invention, a kind of heat pump is provided.
Heat pump according to the present invention comprises: compressor; First cross valve has first connector, second connector, the 3rd connector, the 4th connector, and wherein, first connector is connected with first end of compressor, and second connector is connected with second end of compressor; Second cross valve has the 5th connector, the 6th connector, the 7th connector, the 8th connector, and wherein, the 5th connector is connected with the 3rd connector, and the 6th connector is connected with second end of compressor; The 3rd cross valve has the 9th connector, the tenth connector, the 11 connector, the 12 connector, and wherein, the 9th connector is connected with the 4th connector, and the tenth connector is connected with second end of compressor; First heat exchanger, first end is connected with the 7th connector; Second heat exchanger carries out heat exchange with outdoor air or cooling water, and first end is connected with the 11 connector; The 3rd heat exchanger, first end is connected with the 8th connector; The 4th heat exchanger, first end is connected with the 12 connector; The first throttle assembly, first end links to each other with second end of first heat exchanger; Second orifice union, first end links to each other with second end of second heat exchanger; The 3rd orifice union, first end links to each other with second end of the 3rd heat exchanger; The 4th orifice union, first end links to each other with second end of the 4th heat exchanger; And second end conducting in twos of first throttle assembly, second orifice union, the 3rd orifice union, the 4th orifice union.
Further, the first throttle assembly is to close first electric expansion valve that ends and the parallel-connection structure of first check valve; Second orifice union is to close second electric expansion valve that ends and the parallel-connection structure of second check valve; The 3rd orifice union is to close the 3rd electric expansion valve that ends and the parallel-connection structure of the 3rd check valve; The 4th orifice union is the parallel-connection structure of quadrielectron expansion valve and the 4th check valve.
Further, also comprise the multitube system high pressure fluid reservoir that two-way circulates, be connected with second end of first throttle assembly, second orifice union, the 3rd orifice union, the 4th orifice union according to heat pump of the present invention.
Further, heat pump according to the present invention also comprises: gas-liquid separator, and an end is connected with compressor second end, and the other end is connected with second connector, the 6th connector and the tenth connector.
To achieve these goals, according to another aspect of the present invention, a kind of heat pump control method is provided.
This heat pump control method is used to control any one heat pump provided by the invention, comprising: control the conversion of the stream of heat pump through the open and-shut mode of controlling any two cross valves in first cross valve, second cross valve, the 3rd cross valve; And through controlling any two electric expansion valves are in closed condition in first electric expansion valve, second electric expansion valve, the 3rd electric expansion valve and the quadrielectron expansion valve, another electric expansion valve is in the switching degree that automatic adjusting aperture state is controlled the stream of heat pump arbitrarily.
To achieve these goals, according to another aspect of the present invention, a kind of heat pump control method is provided.
This heat pump control method is used to control any one heat pump provided by the invention, comprising: control the conversion of the stream of heat pump through the open and-shut mode of controlling any two cross valves in first cross valve, second cross valve, the 3rd cross valve; And through controlling any electric expansion valve is in closed condition in first electric expansion valve, second electric expansion valve, the 3rd electric expansion valve and the quadrielectron expansion valve, arbitrarily in addition two electric expansion valves are in the switching degree that automatic adjusting aperture state is controlled the stream of heat pump.
To achieve these goals, according to another aspect of the present invention, a kind of heat pump control method is provided.
This heat pump control method is used to control any one heat pump provided by the invention, comprising: control the conversion of heat pump stream through the open and-shut mode of controlling any two cross valves in first cross valve, second cross valve, the 3rd cross valve; And through controlling any three electric expansion valves are in the switching degree that automatic adjusting aperture state is controlled the heat pump stream in first electric expansion valve, second electric expansion valve, the 3rd electric expansion valve and the quadrielectron expansion valve.
Further, in any one heat pump control method provided by the invention, in first cross valve, second cross valve and the 3rd cross valve by the cross valve state that keeps shut of control open and-shut mode.
Further; In any one heat pump control method provided by the invention, the electric expansion valve that is not in automatic adjusting aperture state in first electric expansion valve, second electric expansion valve, the 3rd electric expansion valve and the quadrielectron expansion valve and is not in closed condition keeps full-gear.
Through the present invention, adopt to comprise heat pump: compressor with the lower part; First cross valve has first connector, second connector, the 3rd connector, the 4th connector, and wherein, first connector is connected with first end of compressor, and second connector is connected with second end of compressor; Second cross valve has the 5th connector, the 6th connector, the 7th connector, the 8th connector, and wherein, the 5th connector is connected with the 3rd connector, and the 6th connector is connected with second end of compressor; The 3rd cross valve has the 9th connector, the tenth connector, the 11 connector, the 12 connector, and wherein, the 9th connector is connected with the 4th connector, and the tenth connector is connected with second end of compressor; First heat exchanger, first end is connected with the 7th connector; Second heat exchanger, first end is connected with the 11 connector; The 3rd heat exchanger, first end is connected with the 8th connector; The 4th heat exchanger, first end is connected with the 12 connector; The first throttle assembly, first end links to each other with second end of first heat exchanger; Second orifice union, first end links to each other with second end of second heat exchanger; The 3rd orifice union, first end links to each other with second end of the 3rd heat exchanger; The 4th orifice union, first end links to each other with second end of the 4th heat exchanger; And second end conducting in twos of first throttle assembly, second orifice union, the 3rd orifice union, the 4th orifice union, solved that heat pump heats or the problem of poor refrigerating efficiency, so make heat pump heat or refrigeration better.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structure chart according to the heat pump of the embodiment of the invention.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Fig. 1 is the structure chart according to the heat pump of the embodiment of the invention.
As shown in Figure 1, this heat pump comprises: compressor 1; First cross valve 2 has the first connector D1, the second connector S1, the 3rd connector C1, the 4th connector E1, and wherein, the first connector D1 is connected with first end of compressor 1, and the second connector S1 is connected with second end of compressor 1; Second cross valve 3 has the 5th connector D2, the 6th connector S2, the 7th connector C2, the 8th connector E2, and wherein, the 5th connector D2 is connected with the 3rd connector C1, and the 6th connector S2 is connected with second end of compressor 1; The 3rd cross valve 4 has the 9th connector D3, the tenth connector S3, the 11 connector C3, the 12 connector E3, and wherein, the 9th connector D3 is connected with the 4th connector E1, and the tenth connector S3 is connected with second end of compressor 1; First heat exchanger, 5, the first ends are connected with the 7th connector C2; Second heat exchanger, 6, the first ends are connected with the 11 connector C3; The 3rd heat exchanger 7, the first ends are connected with the 8th connector E2; The 4th heat exchanger 8, the first ends are connected with the 12 connector E3; The first throttle assembly, first end links to each other with second end of first heat exchanger 5; Second orifice union, first end links to each other with second end of second heat exchanger 6; The 3rd orifice union, first end links to each other with second end of the 3rd heat exchanger 7; The 4th orifice union, first end links to each other with second end of the 4th heat exchanger 8; And second end of first throttle assembly, second orifice union, the 3rd orifice union and the 4th orifice union connects and conducting in twos.
In this embodiment; System adopts three cross valves to connect four heat exchangers, and wherein first heat exchanger 5 can be the hot water condenser, and second heat exchanger 6 can be outdoor condenser; The 3rd heat exchanger 7 can be indoor evaporator; The 4th heat exchanger 8 can be air reheater, simultaneously, adopts the quadruplet orifice union perhaps to regulate the equipment of refrigerant flow direction as throttling.This heat pump can adopt different running mode according to actual needs, thereby makes the refrigeration of heat pump or heating effect better, adopts parts still less to realize multi-mode operation simultaneously; Optimized the machine set system structure, made unit compact more, efficient, it can be produced a desired effect and can increase multiple function; Improve usage ratio of equipment, practice thrift cost of manufacture, and when heating or freeze, do not need other auxiliary equipment; Save the energy, low-carbon environment-friendly.With respect to magnetic valve break-make control capillary-compensated, the present invention's control is simpler, the stability of a system is higher, unit self-regulation is accurate, more can adapt to different operating conditions.Adopt the heat pump of this embodiment, characteristics such as make source pump have practicality, energy saving, the feature of environmental protection and to be widely used.
Preferably, the first throttle assembly is to close first electric expansion valve 9 that ends and the parallel-connection structure of first check valve 10; Second orifice union is to close second electric expansion valve 11 that ends and the parallel-connection structure of second check valve 12; The 3rd orifice union is to close the 3rd electric expansion valve 13 that ends and the parallel-connection structure of the 3rd check valve 14; The 4th orifice union is to close the quadrielectron expansion valve 15 that ends and the parallel-connection structure of the 4th check valve 16.
Adopt the orifice union of the parallel-connection structure of electric expansion valve and check valve, limit, realize throttling or the purpose of regulating refrigerant flow direction through the different conditions of electric expansion valve and the direction of passage of check valve as heat pump.The large-scale Flow-rate adjustment characteristic of electric expansion valve can accurately be controlled the flow of cold-producing medium, thereby makes the refrigeration of heat pump or heating effect better.
Preferably, also comprise the multitube system high pressure fluid reservoir 17 that two-way circulates, be connected with second end of first throttle assembly, second orifice union, the 3rd orifice union, the 4th orifice union according to the heat pump of the embodiment of the invention.
Alternatively; This high pressure fluid reservoir is two-way multitube system high pressure fluid reservoir, can regulate the circulating mass of refrigerant difference that exists between the various operational modes of heat pump, when circulating mass of refrigerant is big; The high pressure fluid reservoir provides cold-producing medium; At circulating mass of refrigerant hour, unnecessary cold-producing medium is stored in the high pressure fluid reservoir, thereby makes the refrigeration of heat pump or heating effect better.
Preferably, comprise also that according to the heat pump of the embodiment of the invention gas-liquid separator 18, one ends are connected with compressor 1 second end, the other end is connected with the second connector S1, said the 6th connector S2 and said the tenth connector S3.
Through gas-liquid separator is set, can prevent that the compressor inlet inspiration liquid refrigerants of heat pump from producing liquid hammer damage compressor, simultaneously; The good separating effect of gas-liquid separator; Adapt to the segregational load wide ranges, operating efficiency is stable, thereby makes the refrigeration of heat pump or heating effect better.
For realizing the control of heat pump of the present invention, the invention provides the control method of multiple heat pump, through the Different control method, realize the plurality of operating modes of heat pump.
Control method 1: control the conversion of the stream of heat pump through the open and-shut mode of controlling any two cross valves in first cross valve 2, second cross valve 3, the 3rd cross valve 4; And through controlling any two electric expansion valves are in closed condition in first electric expansion valve 9, second electric expansion valve 11, the 3rd electric expansion valve 13 and the quadrielectron expansion valve 15, another electric expansion valve is in the switching degree that automatic adjusting aperture state is controlled the stream of heat pump arbitrarily.
Adopt this control method, make and insert a condenser and an evaporimeter in the refrigerant circulation loop,, realize the multiple refrigeration or the heat-production functions of heat pump through the combinations of states of different cross valves and different electric expansion valves.
Example 1: the first cross valve 2, second cross valve 3 are closed condition; The 3rd electric expansion valve 13, quadrielectron expansion valve 15 are closed condition; Second electric expansion valve 11 is that heat pump runs on and heats aqueous mode when regulating the aperture state automatically, and wherein, the cyclic process of cold-producing medium is:
Condensation heat release in the first connector D1 of compressor 1 discharge high temperature and high pressure gas → first cross valve 2 and the 5th connector D2 of the 3rd connector C1 → second cross valve 3 and the 7th connector C2 → hot water condenser 5; Discharge highly pressurised liquid → first check valve 10 → two-way multitube system high pressure fluid reservoir 17 → become low-temp low-pressure liquid →, discharge in the 4th connector E1 and the second connector S1 → gas-liquid separator 18 of the 11 connector C3 and the 9th connector D3 → first cross valve 2 of low-pressure gas → the 3rd cross valve 4 and separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in outdoor condenser 6 heat absorptions in 11 throttlings of second electric expansion valve.
When heat pump is used for the Chi Shui heating of swimming pool, adopt this to heat aqueous mode and directly Chi Shui is heated, do not influence the temperature of room air, heating effect is good, and does not need other assistant heating equipment such as auxiliary steam, auxiliary electrical heating, has saved the energy.
Example 2: when heat pump was used for chilled water, first cross valve 2 was an open mode, and the 3rd cross valve 4 is a closed condition; The 3rd electric expansion valve 13, quadrielectron expansion valve 15 are closed condition; First electric expansion valve 9 is the aperture state of regulating automatically.Heat pump runs on the chilled water pattern, and the cyclic process of cold-producing medium is:
Chilled water: compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 9th connector D3 and the 11 connector C3 → condensation heat release in outdoor condenser 6 of the 4th connector E1 → the 3rd cross valve 4; Discharge highly pressurised liquid → second check valve 12 → two-way multitube system high pressure fluid reservoir 17 → become low-temp low-pressure liquid → heat absorption in hot water condenser 5, discharge in the 3rd connector C1 and the second connector S1 → gas-liquid separator of the 7th connector C2 and the 5th connector D2 → first cross valve 2 of low-pressure gas → second cross valve 3 18 and separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in 9 throttlings of first electric expansion valve.
When summer, pond water temperature was higher; Heat pump can be used in the pond water for cooling of swimming pool, adopts this chilled water pattern directly Chi Shui to be freezed, and does not influence the temperature of room air; Good refrigeration effect; The swimmer is cool and comfortable in water, and indoor temperature is suitable after coming out from Chi Shuizhong, can not catch a cold or catch a cold.
3: the first cross valves 2 of example are open mode, and the 3rd cross valve 4 is a closed condition; First electric expansion valve 9, quadrielectron expansion valve 15 are closed condition; The 3rd electric expansion valve 13 is the aperture state of regulating automatically.Heat pump runs on indoor refrigeration mode, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 9th connector D3 and the 11 connector C3 → condensation heat release in outdoor condenser 6 of the 4th connector E1 → the 3rd cross valve 4; Discharge highly pressurised liquid → second check valve 12 → two-way multitube system high pressure fluid reservoir 17 → become low-temp low-pressure liquid → heat absorption in indoor evaporator 7, separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in the 8th connector E2 that discharges low-pressure gas → second cross valve 3 and the 6th connector S2 → gas-liquid separator 18 in 13 throttlings of the 3rd electric expansion valve.
4: the first cross valves 2 of example are open mode, and the 3rd cross valve 4 is a closed condition; First electric expansion valve 9, the 3rd electric expansion valve 13 are closed condition; Quadrielectron expansion valve 15 is an auto state.Heat pump runs on indoor refrigeration mode, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 9th connector D3 and the 11 connector C3 → condensation heat release in outdoor condenser 6 of the 4th connector E1 → the 3rd cross valve 4; Discharge highly pressurised liquid → second check valve 12 → two-way four control high pressure fluid reservoirs 17 → become low-temp low-pressure liquid → heat absorption in air reheater 8, separate gas in the 12 connector E3 that discharges low-pressure gas → the 3rd cross valve 4 and the tenth connector S3 → gas-liquid separator 18, liquid refrigerants → gaseous coolant gets into compressor 1 in 15 throttlings of quadrielectron expansion valve.
Example 3 all runs on indoor refrigeration mode with the heat pump of example 4, and is similar with the room conditioning refrigeration of routine, but has the circulation canal of two kinds of cold-producing mediums; Because indoor evaporator 7 is different with the position that air reheater 8 is installed; Thereby adopt different circulation canals can realize the difference of adjacent or close different places or simultaneously the refrigeration, make refrigeration better, and utilize identical outdoor condenser 6; Save cost, improve utilization rate of equipment and installations.
5: the first cross valves 2 of example are closed condition, and second cross valve 3 is an open mode; First electric expansion valve 9, quadrielectron expansion valve 15 are closed condition; Second electric expansion valve 11 is an auto state.Heat pump runs on the indoor heating pattern, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 5th connector D2 and the 8th connector E2 → condensation heat release in indoor evaporator 7 of the 3rd connector C1 → second cross valve 3; Discharge highly pressurised liquid → the 3rd check valve 14 → two-way multitube system high pressure fluid reservoir 17 → become low-temp low-pressure liquid → heat absorption in outdoor condenser 6, discharge in the 4th connector E1 and the second connector S1 → gas-liquid separator 18 of the 11 connector C3 and the 9th connector D3 → first cross valve 2 of low-pressure gas → the 3rd cross valve 4 and separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in 11 throttlings of second electric expansion valve.
6: the first cross valves 2 of example and the 3rd cross valve 4 are open mode; First electric expansion valve 9 and the 3rd electric expansion valve 13 are closed condition; Second electric expansion valve 11 is the aperture state of regulating automatically.Heat pump runs on the indoor heating pattern, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 9th connector D3 and the 12 connector E3 → condensation heat release in air reheater 8 of the 4th connector E1 → the 3rd cross valve 4; Discharge highly pressurised liquid → the 4th check valve 16 → two-way multitube system high pressure fluid reservoir 17 → become low-temp low-pressure liquid → heat absorption in outdoor condenser 6, separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in the 11 connector C3 that discharges low-pressure gas → the 3rd cross valve 4 and the tenth connector S3 → gas-liquid separator 18 in 11 throttlings of the 3rd electric expansion valve.
Example 5 all runs on the indoor heating pattern with example 6 heat pump, heats similarly with the room conditioning of routine, but has the circulation canal of two kinds of cold-producing mediums; Because indoor evaporator 7 can be different with the position of air reheater 8 installations; Thereby adopt different circulation canals can realize heating respectively of adjacent or close different places, make heating effect better, and utilize identical outdoor condenser 6; Save cost, improve utilization rate of equipment and installations.
Example 7: the first cross valves 2, second cross valves 3 are closed condition; Second electric expansion valve 11, quadrielectron expansion valve 15 are closed condition; The 3rd electric expansion valve 13 is an auto state.Heat pump runs on and heats water and indoor refrigeration mode, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 5th connector D2 the 7th connector C2 → condensation heat release in hot water condenser 5 of the 3rd connector C1 → second cross valve 3; Discharge highly pressurised liquid → first check valve 10 → two-way four control high pressure fluid reservoirs 17 → become low-temp low-pressure liquid → heat absorption in indoor evaporator 7, separate gas in the 8th connector E2 that discharges low-pressure gas → second cross valve 3 and the 6th connector S2 → gas-liquid separator 18, liquid refrigerants → gaseous coolant gets into compressor 1 in 13 throttlings of the 3rd electric expansion valve.
Example 8: the first cross valves 2, second cross valves 3 are closed condition; Second electric expansion valve 11, the 3rd electric expansion valve 13 are closed condition; Quadrielectron expansion valve 15 is an auto state.Heat pump runs on and heats water and indoor refrigeration mode, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 5th connector D2 and the 7th connector C2 → condensation heat release in hot water condenser 5 of the 3rd connector C1 → second cross valve 3; Discharge highly pressurised liquid → first check valve 10 → two-way four control high pressure fluid reservoirs 17 → become low-temp low-pressure liquid → heat absorption in air reheater 8, separate gas in the 12 capillary E3 that discharges low-pressure gas → the 3rd cross valve 4 and the tenth capillary S3 → gas-liquid separator 18, liquid refrigerants → gaseous coolant gets into compressor 1 in 15 throttlings of quadrielectron expansion valve.
Example 7 all runs on routine 8 heat pumps and heats water and indoor refrigeration mode.On the hot summer days in summer of sweltering heat, room temperature is often very high, needs suitable cooling; Simultaneously, consider the comfort level of human body, when swimming pool changes water, need carry out suitable heating newly changing water; The heat pump of employing present embodiment runs on and heats water and indoor refrigeration mode; Can suitably heat and reduce room temperature to a certain extent Chi Shui, and have the circulation canal of two kinds of cold-producing mediums, because indoor evaporator 7 can be different with the position of air reheater 8 installations; Thereby that adopts that different circulation canals can realize adjacent or close different places reaches the effect that heats water and indoor refrigeration respectively or simultaneously; And utilize identical hot water condenser 5, save cost, improve utilization rate of equipment and installations.
9: the first cross valves 2 of example are closed condition, and second cross valve 3 is an open mode; Second electric expansion valve 11, quadrielectron expansion valve 15 are closed condition; First electric expansion valve 9 is the aperture state of regulating automatically; Heat pump runs on chilled water and indoor heating pattern, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 5th connector D2 and the 8th connector E2 → condensation heat release in indoor evaporator 7 of the 3rd connector C1 → second cross valve 3; Discharge highly pressurised liquid → the 3rd check valve 14 → two-way multitube system high pressure fluid reservoir 17 → become low-temp low-pressure liquid → heat absorption in hot water condenser 5, separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in the 7th connector C2 that discharges low-pressure gas → second cross valve 3 and the 6th connector S2 → gas-liquid separator 18 in 9 throttlings of first electric expansion valve.
10: the first cross valves 2 of example and the 3rd cross valve 4 are open mode; Second electric expansion valve 11 and the 3rd electric expansion valve 13 are closed condition; And first electric expansion valve 9 is the aperture state of regulating automatically.Heat pump runs on chilled water and indoor heating pattern, and the cyclic process of cold-producing medium is:
Compressor 1 is discharged the first connector D1 of high temperature and high pressure gas → first cross valve 2 and the 9th connector D3 and the 12 connector E3 → condensation heat release in air reheater 8 of the 4th connector E1 → the 3rd cross valve 4; Discharge highly pressurised liquid → the 4th check valve 16 → two-way multitube system high pressure fluid reservoir 17 → become low-temp low-pressure liquid → heat absorption in hot water condenser 5, discharge in the 3rd connector C1 and the second connector S1 → gas-liquid separator 18 of the 7th connector C2 and the 5th connector D2 → first cross valve 2 of low-pressure gas → second cross valve 3 and separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in 9 throttlings of first electric expansion valve.
When example 9 all runs on chilled water and indoor heating pattern with routine 10 heat pumps; When occurring the lower and pond water temperature condition with higher of indoor temperature in the swimming pool, run on chilled water and indoor heating pattern through the heat pump that adopts this embodiment, can be when reducing pond water temperature the rising indoor temperature; And the circulation canal that has two kinds of cold-producing mediums; Because indoor evaporator 7 can be different with the position of air reheater 8 installations, thereby adopt different circulation canals can realize the effect that reaches chilled water and indoor heating respectively of adjacent or close different places, and utilize identical hot water condenser 5; Save cost, improve utilization rate of equipment and installations.
Example 11: the first cross valves 2, the 3rd cross valves 4 are open mode; First electric expansion valve 9, second electric expansion valve 11 are closed condition; The 3rd electric expansion valve 13 is the aperture state of regulating automatically.Heat pump runs on room air constant temperature dehumidification mode, and the cyclic process of cold-producing medium is:
First connector D1 of compressor 1 discharge high temperature and high pressure gas → first cross valve 2 and the 9th connector D3 of the 4th connector E1 → the 3rd cross valve 4 and the 12 connector E3 → the condensation heat release realizes air heat again in air reheater 8; Discharge highly pressurised liquid → the 4th check valve 16 → two-way multitube system high pressure fluid reservoir 17 → and become that low-temp low-pressure liquid → heat absorption realizes the air cooling-down dehumidifying in indoor evaporator 7, separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in the 8th connector E2 that discharges low-pressure gas → second cross valve 3 and the 6th connector S2 → gas-liquid separator 18 in 13 throttlings of the 3rd electric expansion valve.
12: the first cross valves 2 of example are closed condition, and second cross valve 3 is an open mode; First electric expansion valve 9, second electric expansion valve 11 are closed condition; Quadrielectron expansion valve 15 is the aperture state of regulating automatically.Heat pump runs on room air constant temperature dehumidification mode, and the cyclic process of cold-producing medium is:
First connector D1 of compressor 1 discharge high temperature and high pressure gas → first cross valve 2 and the 5th connector D2 of the 3rd connector C1 → second cross valve 3 and the 8th connector E2 → the condensation heat release realizes air heat again in indoor evaporator 7; Discharge highly pressurised liquid → the 3rd check valve 14 → two-way multitube system high pressure fluid reservoir 17 → and become that low-temp low-pressure liquid → heat absorption realizes the air cooling-down dehumidifying in air reheater 8, separate gas, liquid refrigerants → gaseous coolant entering compressor 1 in the 12 connector E3 that discharges low-pressure gas → the 3rd cross valve 4 and the tenth connector S3 → gas-liquid separator 18 in 15 throttlings of quadrielectron expansion valve.
Reason owing to weather and special geographical position; Have a humid climate the spring of some region, temperature is lower; As, the southern most of areas of China, indoor not only there was dampness in the air but also temperature is on the low side in the spring of these regions; Therefore carry out heat again in the time of need be to indoor air dehumidification, to guarantee the dehumidifying of room air constant temperature.Through the heat pump of this embodiment, not only reach the purpose that reduces indoor humidity, and, can reach the air purpose of heat again according to the requirement of indoor air temperature.Thereby adopt the heat pump of present embodiment not need special dehumidification equipment, greatly improved usage ratio of equipment.
Adopt the control method of this embodiment; Heat pump can move the cyclic process of different patterns through multiple different refrigerants to reach following multiple effects; Comprise: heat water, chilled water, indoor refrigeration, indoor heating, heat water+indoor refrigeration, chilled water+indoor heating, constant indoor temperature dehumidifying or the like, the summary of the on off state of cross valve and electric expansion valve is as shown in the table in the part cyclic process:
Need to prove that in this table, "/" representative state is irrelevant, for example when heating water, irrelevant, but from the service life of energy-conservation angle and cross valve, should close with the state of the 3rd cross valve 4, i.e. no power; " standard-sized sheet " is in order SR to be reached minimum, in fact the electric expansion valve of " standard-sized sheet " be in any aperture state can, comprise buttoned-up status.
Control method 2: control the conversion of the stream of heat pump through the open and-shut mode of controlling any two cross valves in first cross valve 2, second cross valve 3, the 3rd cross valve 4; And through controlling any electric expansion valve is in closed condition in first electric expansion valve 9, second electric expansion valve 11, the 3rd electric expansion valve 13 and the quadrielectron expansion valve 15, two electric expansion valves are in the switching degree that automatic adjusting aperture state is controlled the stream of heat pump in addition arbitrarily.
Adopt this control method, make and insert a condenser and two evaporimeters in the refrigerant circulation loop,, realize the multiple refrigeration or the heat-production functions of heat pump through the combinations of states of different cross valves and different electric expansion valves.
The concrete course of work is similar with control method 1, enumerates no longer one by one here, and the on off state that only provides cross valve and electric expansion valve in the cyclic process is summed up as shown in the table:
Control method 3: control the conversion of heat pump stream through the open and-shut mode of controlling any two cross valves in first cross valve 2, second cross valve 3, the 3rd cross valve 4; And state through control that any three electric expansion valves are in the switching degree that automatic adjusting aperture state is controlled the heat pump stream in first electric expansion valve 9, second electric expansion valve 11, the 3rd electric expansion valve 13 and the quadrielectron expansion valve 15.
Adopt this control method, make and insert a condenser and three evaporimeters in the refrigerant circulation loop,, realize the multiple refrigeration or the heat-production functions of heat pump through the combinations of states of different cross valves and different electric expansion valves.
The concrete course of work is similar with control method 1, enumerates no longer one by one here, and the on off state that only provides cross valve and electric expansion valve in the cyclic process is summed up as shown in the table:
Through three kinds of above control methods; Open or close the trend of regulating cold-producing medium through what regulate cross valve and electric expansion valve and check valve; Regulate the circulating mass of refrigerant difference that exists between the plurality of operating modes by two-way multitube system high pressure fluid reservoir, system can realize multimodal operation, according to the difference of physical condition; Heat pump adopts suitable operational mode, satisfies various operating modes and can run on different places.
In any one heat pump control method provided by the invention, in first cross valve, second cross valve and the 3rd cross valve by the cross valve state that keeps shut of control open and-shut mode.Adopt closed condition can save the life-span of the energy and prolongation cross valve.The electric expansion valve that is not in automatic adjusting aperture state in first electric expansion valve, second electric expansion valve, the 3rd electric expansion valve and the quadrielectron expansion valve and is not in closed condition keeps full-gear, SR to reach minimum.
Compare with constant temperature and humidity swimming pool air-conditioning in the past; Heat pump of the present invention has improved existing swimming pool heat pump set system, under the prerequisite that does not change its original function, increases multiple other function, through the cyclic process of multiple different refrigerants; Make pond water cooling and warming, room air cooling and warming independently to realize or to adopt the mode of recuperation of heat to make up realization; Make that the cooling or heating effect of heat pump is better, and unit adopts the split design can also be applied to a plurality of different spaces air-treatments, the realization associating use of different water system; The recuperation of heat method of operation under the various modes can be so that unit operation be more efficient, stable; Both strengthen the cooling or heating effect of heat pump, improved usage ratio of equipment again, and made source pump have advantages such as practicality, energy saving, the feature of environmental protection and widespread popularity.
From above description, can find out, adopt heat pump of the present invention, can make that refrigeration or heating effect are better, effect such as reached practical, energy-saving and environmental protection simultaneously and be widely used.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. heat pump is characterized in that comprising:
Compressor (1);
First cross valve (2); Have first connector (D1), second connector (S1), the 3rd connector (C1), the 4th connector (E1); Wherein, Said first connector (D1) is connected with first end of said compressor (1), and said second connector (S1) is connected with second end of said compressor (1);
Second cross valve (3); Have the 5th connector (D2), the 6th connector (S2), the 7th connector (C2), the 8th connector (E2); Wherein, Said the 5th connector (D2) is connected with said the 3rd connector (C1), and said the 6th connector (S2) is connected with second end of said compressor (1);
The 3rd cross valve (4); Have the 9th connector (D3), the tenth connector (S3), the 11 connector (C3), the 12 connector (E3); Wherein, Said the 9th connector (D3) is connected with said the 4th connector (E1), and said the tenth connector (S3) is connected with second end of said compressor (1);
First heat exchanger (5), first end is connected with said the 7th connector (C2);
Second heat exchanger (6), first end is connected with said the 11 connector (C3);
The 3rd heat exchanger (7), first end is connected with said the 8th connector (E2);
The 4th heat exchanger (8), first end is connected with said the 12 connector (E3);
The first throttle assembly, first end links to each other with second end of said first heat exchanger (5);
Second orifice union, first end links to each other with second end of said second heat exchanger (6);
The 3rd orifice union, first end links to each other with second end of said the 3rd heat exchanger (7);
The 4th orifice union, first end links to each other with second end of said the 4th heat exchanger (8); And
Second end of said first throttle assembly, said second orifice union, said the 3rd orifice union and said the 4th orifice union connects and conducting in twos.
2. heat pump according to claim 1 is characterized in that,
Said first throttle assembly is to close first electric expansion valve (9) that ends and the parallel-connection structure of first check valve (10);
Said second orifice union is to close second electric expansion valve (11) that ends and the parallel-connection structure of second check valve (12);
Said the 3rd orifice union is to close the 3rd electric expansion valve (13) that ends and the parallel-connection structure of the 3rd check valve (14);
Said the 4th orifice union is to close the quadrielectron expansion valve (15) that ends and the parallel-connection structure of the 4th check valve (16).
3. heat pump according to claim 1 is characterized in that, also comprises:
The multitube system high pressure fluid reservoir (17) that two-way circulates is connected with second end of said first throttle assembly, said second orifice union, said the 3rd orifice union, said the 4th orifice union.
4. heat pump according to claim 1 is characterized in that, also comprises:
Gas-liquid separator (18), an end is connected with said compressor (1) second end, and the other end is connected with said second connector (S1), said the 6th connector (S2) and said the tenth connector (S3).
5. the control method of a heat pump according to claim 2 is characterized in that:
Control the conversion of the stream of said heat pump through the open and-shut mode of controlling any two cross valves in said first cross valve (2), said second cross valve (3), said the 3rd cross valve (4); And
Any two electric expansion valves are in closed condition in said first electric expansion valve (9), said second electric expansion valve (11), said the 3rd electric expansion valve (13) and the said quadrielectron expansion valve (15) through controlling, and another electric expansion valve is in the switching degree that automatic adjusting aperture state is controlled the stream of said heat pump arbitrarily.
6. the control method of a heat pump according to claim 2 is characterized in that:
Control the conversion of the stream of said heat pump through the open and-shut mode of controlling any two cross valves in said first cross valve (2), said second cross valve (3), said the 3rd cross valve (4); And
Any electric expansion valve is in closed condition in said first electric expansion valve (9), said second electric expansion valve (11), said the 3rd electric expansion valve (13) and the said quadrielectron expansion valve (15) through controlling, and two electric expansion valves are in the switching degree that automatic adjusting aperture state is controlled the stream of said heat pump in addition arbitrarily.
7. the control method of a heat pump according to claim 2 is characterized in that:
Control the conversion of said heat pump stream through the open and-shut mode of controlling any two cross valves in said first cross valve (2), said second cross valve (3), said the 3rd cross valve (4); And
Any three electric expansion valves are in the switching degree that automatic adjusting aperture state is controlled said heat pump stream in said first electric expansion valve (9), said second electric expansion valve (11), said the 3rd electric expansion valve (13) and the said quadrielectron expansion valve (15) through controlling.
8. according to the control method of each described heat pump in the claim 5 to 7, it is characterized in that:
In said first cross valve (2), said second cross valve (3) and said the 3rd cross valve (4) by the cross valve state that keeps shut of control open and-shut mode.
9. according to the control method of each described heat pump in the claim 5 to 7, it is characterized in that:
The electric expansion valve that is not in automatic adjusting aperture state in said first electric expansion valve (9), said second electric expansion valve (11), said the 3rd electric expansion valve (13) and the said quadrielectron expansion valve (15) and is not in closed condition keeps full-gear.
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