CN1451935A - Combined air-cooled heat pump unit - Google Patents
Combined air-cooled heat pump unit Download PDFInfo
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- CN1451935A CN1451935A CN 02111436 CN02111436A CN1451935A CN 1451935 A CN1451935 A CN 1451935A CN 02111436 CN02111436 CN 02111436 CN 02111436 A CN02111436 A CN 02111436A CN 1451935 A CN1451935 A CN 1451935A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 146
- 238000005057 refrigeration Methods 0.000 claims abstract description 29
- 239000002131 composite material Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 42
- 238000004378 air conditioning Methods 0.000 abstract description 27
- 238000001704 evaporation Methods 0.000 abstract description 7
- 230000008020 evaporation Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 33
- 239000007788 liquid Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 238000009833 condensation Methods 0.000 description 13
- 230000005494 condensation Effects 0.000 description 13
- 238000001816 cooling Methods 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 125000004122 cyclic group Chemical group 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 230000009897 systematic effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention relates to an air-cooled heat pump unit. When the traditional air-cooled heat pump unit heats at a low temperature (usually Ta & lt-5 ℃), the evaporation temperature of the unit is too low, the exhaust temperature is too high, and the lubricating and sealing performances of a bearing and a rotor are seriously influenced; the heating energy efficiency ratio is very low, and the heating capacity is seriously insufficient. The present invention features that the water source heat pump unit and the air cooled heat pump unit form one organic whole and the water circulating unit is changed to realize different functions. In summer, the air-cooled heat pump unit and the water source heat pump unit can be used for refrigeration respectively; when the air temperature of the external environment is too low in winter, hot water with intermediate temperature (about 21 ℃) is prepared by an air-cooled heat pump unit, then the water source heat pump unit absorbs heat from the hot water, a high-temperature water source (about 45 ℃) is further prepared by applying work through a compressor, and the heat is transferred to a building air-conditioning area through a water-air coil pipe, so that the aim of heating the air in a room is fulfilled.
Description
[technical field]
The present invention relates to a kind of Air-Cooled Heat Pump Unit that has refrigeration, heats dual-use function.
[background technology]
Air-cooled heat pump is to be cold (heat) source with air, with water is the central air-conditioning unit of cooling (heat) medium, integration apparatus as the cold and heat source dual-purpose type, Air-Cooled Heat Pump Unit has been omitted many auxiliaries such as cooling tower, water pump, boiler and corresponding pipeline system, its system architecture is simple, and it is little to take up space, and maintenance management is convenient, energy savings is particularly useful for the water scarcity area.Therefore, Air-Cooled Heat Pump Unit is normally many had not both had heating boiler, did not have heating network or other reliable and stable thermal source again, but the scheme of preferentially selecting for use when requiring to carry out throughout the year the heating and ventilation project design of air conditioning.
Traditional Air-Cooled Heat Pump Unit air-conditioning system as shown in Figure 1, wherein 17 is Air-Cooled Heat Pump Unit, 18 for air conditioning cabinet (also can be other air conditioning terminals such as fan coil), and water-air-coil is arranged in it, 19 is the building air conditioning zone.Its operation principle is:
1, refrigeration mode
The refrigeration mode system flow of tradition Air-Cooled Heat Pump Unit 1 is shown in the solid line arrow: the high-temperature high-pressure refrigerant steam that compressor 1 is discharged enters the air side heat exchanger 10 (this moment, function was a condenser) that is in the external environment through cross valve 2, take away a large amount of heats that cold-producing medium is produced by the axial flow blower ventilation in condensation process, condensed high pressure is crossed cold refrigerant liquid through non-return valve 4, reservoir 5, device for drying and filtering 6 and magnetic valve 7 enter expansion valve 8 throttling expansions, low-temperature low-pressure refrigerant gas-fluid two-phase mixture after the expansion enters water-side heat 3 (this moment, function was an evaporimeter) through non-return valve 9, absorb stream and behind air conditioner water backwater (about about 12 ℃ of the temperature) heat of air conditioning cabinet 18, become superheated steam, flowing to gas-liquid separator 11 through cross valve 2 again separates, isolated refrigerant vapour is compressed after getting back to compressor 1 more again, begins new cold-producing medium cyclic process.Air conditioner water (temperature is reduced to about 7 ℃) in water-side heat 3 after the heat release cooling is then got back to air conditioning cabinet 18, circulating air by the water-air-coil and the air conditioning cabinet 18 of flowing through carries out heat exchange, water temperature rising (about about 12 ℃) behind the heat of absorption circulating air, then got back to water-side heat 3 again, begin new air conditioner water cyclic process by water pump 16 superchargings; Simultaneously, circulating air is cooled, and delivers to building air conditioning zone 19 through air diffuser 21, reaches the purpose of cool room air.
2, heating mode
The heating mode system flow of tradition Air-Cooled Heat Pump Unit 1 is shown in dotted arrow: the high-temperature high-pressure refrigerant steam that compressor 1 is discharged enters water-side heat 3 (this moment, function was a condenser) through cross valve 2, carry out exchange heat with stream from the air conditioner water backwater (about about 40 ℃ of temperature) of air conditioning cabinet 18, a large amount of heat transferred air conditioner waters that refrigerant vapour is produced in condensation process, enter air conditioning cabinet 18 after making air conditioner water temperature rising (about about 45 ℃), carry out heat exchange by the circulating air in the water-air-coil and the air conditioning cabinet of flowing through, heat is discharged to water temperature decline (about about 40 ℃) behind the circulating air, and come back to water-side heat 3 after water pump 16 superchargings, begin new air conditioner water circulation; Circulating air is heated in air conditioning cabinet therebetween, and delivers to building air conditioning zone 19 through air diffuser 21, reaches the purpose of heat rooms air.Simultaneously, the high pressure that is condensed in the water-side heat is crossed cold refrigerant liquid through non-return valve 12, reservoir 5, device for drying and filtering 6 and magnetic valve 15 enter expansion valve 14 throttling expansions, low-temperature low-pressure refrigerant gas-fluid two-phase mixture after the expansion enters the air side heat exchanger 10 (this moment, function was an evaporimeter) that is in the external environment through non-return valve 13, by becoming superheated steam behind the axial flow blower ventilation absorption air heat, then flowing to gas-liquid separator 11 through cross valve 2 again separates, again be compressed again after refrigerant vapour after liquid refrigerant separated is got back to compressor 1, begin new cold-producing medium cyclic process.
From aforementioned workflow as can be seen, from the external environment air, absorb heat by cold-producing medium under the Air-Cooled Heat Pump Unit heating mode, and by to compressor work done (consumed power or mechanical energy) and with the air conditioner water of heat transferred circulation to reach purpose to the heating of building air conditioning zone.Unit then absorbs heat under the refrigeration mode from the air conditioner water of circulation, reaches the purpose in cooling building air conditioning zone, unit then equally must be by heat that cold-producing medium absorbed to compressor work and the most at last heat be dispersed into surrounding air.The heat transmission that wherein is in the air side heat exchanger in the external environment is to lean on the temperature difference of surrounding air and cold-producing medium to drive, and under identical air conditioner water water inlet or leaving water temperature situation, the temperature of external environment air is low more, unit heating demand Q ' is big more, Q is then more little for the unit heating capacity, its relativeness can be with reference to Fig. 4: wherein Ta is the temperature of external environment air, T
0Be balance point temperature, Ta＞T
0The time, Q＞Q ', the unit heating capacity can satisfy the heating demand demand; Ta＜T
0The time, Q＜Q ', unit heating capacity are less than the heating demand demand, and air-conditioning system must increase the auxiliary heat supplying facility.So the temperature of external environment air is the extremely important physical quantity that influences the Air-Cooled Heat Pump Unit performance, wherein balance point temperature T
0Height depend primarily on unit capacity size and heating performance thereof.
Usually, the refrigeration performance of unit is to be that nominal condition is demarcated with 35 ℃ of external environment air themperatures, the water inlet of 12 ℃ of air conditioner waters, 7 ℃ of air conditioner water water outlets; Heating performance is that nominal condition is demarcated with 7 ℃ of DB (dry-bulb temperature)/6 ℃ WB (wet-bulb temperature) external environment air themperature, 40 ℃ of air conditioner water water inlets, 45 ℃ of air conditioner water water outlets then.Generally when the temperature of external environment air is lower than 13～15 ℃, just need carry out heat supply, and in the autumn and winter season of northern area, the temperature of external environment air will be far below the temperature of 7 ℃ of DB/6 ℃ of WB of this nominal condition; As previously mentioned, make the unit heating capacity can satisfy heating demand demand (being Q＞Q '), just must reduce the balance point temperature T of unit
0, its result will produce a series of influences to the normal heating operation of Air-Cooled Heat Pump Unit, and very easily cause the unit fault;
A, evaporating temperature are low excessively.Under the Air-Cooled Heat Pump Unit heating mode, cold-producing medium absorbs heat from the external environment air, its evaporating temperature is lower than wants the external environment air themperature, the external environment air themperature is low more, the evaporating temperature of unit is low more, compressor is big more with oil viscosity, and the also just easy more pipe arrangement inwall that freezes in the air side heat exchanger that sticks to causes compressor to lose oil.
B, excessive discharge temperature.Air-Cooled Heat Pump Unit design compression ratio generally only about 3.5, and its compression ratio surpasses 7 when low-temperature heating, even reach 9.Compression ratio is high more, and delivery temperature is high more, and oil viscosity is also just more little in the compressor, and extremely difficulty forms normal oil film thickness at rubbing surface, and has a strong impact on the lubricated and sealing property of bearing, rotor.Too high delivery temperature also can cause the deterioration of oil simultaneously.
C, heating capacity wretched insufficiency.Because the unit compression ratio is very high, refrigerant system capacity decay serious (need select for use the unit of big specification capacity to satisfy the heat supply needs) with regard to meaning, heating energy efficiency ratio is very low.
D, motor radiating worsening condition.Evaporating temperature is low more, and the compressor air suction specific volume is big more, and refrigerant mass fluxes is more little, and the motor radiating condition is also just poor more, and motor very easily burns.
When the external environment air themperature was reduced to 5 ℃, air side heat exchanger surface frosting was accelerated, and the unit heating capacity descends and aggravates; When the external environment air themperature be in-5 ℃～below-10 ℃ the time, common Air-Cooled Heat Pump Unit just is difficult to run well, and influences the application of Air-Cooled Heat Pump Unit in cold district (to the north of the Huanghe valley).Therefore, the low-temperature heating performance becomes the important technology index of weighing Air-Cooled Heat Pump Unit performance quality usually.
[summary of the invention]
The technical assignment of the technical problem to be solved in the present invention and proposition is to overcome the defective that prior art exists, a kind of composite wind-cooled heat pump unit is provided, under low excessively external environment air themperature (below 5 ℃), still can run well, effectively heat supply is carried out in the building air conditioning zone, avoided Air-Cooled Heat Pump Unit to cause the unit fault simultaneously because of low excessively external environment air themperature.
The technical scheme that the present invention takes is: the composite wind-cooled heat pump unit comprises:
One Air-Cooled Heat Pump Unit comprises the A compressor, four way solenoid valve, air side heat exchanger, expansion gear and the water-side heat that are connected by the refrigeration pipe arrangement;
It is characterized in that a water source heat pump units cooperates with described Air-Cooled Heat Pump Unit through water circle device:
Described water source heat pump units comprises B compressor, condenser 19, C expansion valve and the evaporimeter that is connected by the refrigeration pipe arrangement;
Described water circle device comprises through water pipe and is connected on B water pump and V3 valve between water-side heat and the evaporimeter, V7 valve in parallel on the B water pump, the water pipe of connecting on the condenser, the two ends of water pipe are provided with the M mouth of a river and the N mouth of a river, one end of one V2 valve is connected with the M mouth of a river, and its other end is connected between V3 valve and the water-side heat, and an end of another V6 valve is connected with the N mouth of a river, its other end is connected between V7 valve and the B water pump, and the water pipe of condenser one end is provided with the V4 valve.
During use,, V3 valve, V4 valve, water source heat pump units, B water pump are closed, can make unit operation in normal heating mode with V2 valve, V6 valve, V7 opening of valves; V3 valve, V4 valve, water source heat pump units, B water pump are opened, V2 valve, V6 valve, V7 valve are closed, can make unit operation in the low-temperature heating pattern.Because the particularity of water circulation, in order to reach the purpose of heat exchange, heat-carrying, the concrete installation site of water circle device element has multiple connectivity scenario, such as can be as required B water pump and V3 valve being assemblied in the same side of water-side heat, also can be connected to the both sides of water-side heat; And, spatially both Air-Cooled Heat Pump Unit and water source heat pump units can be combined; Be removably installed, the present invention does not all limit this yet.
As further optimization to technique scheme, make Air-Cooled Heat Pump Unit and water source heat pump units respectively can isolated operation in refrigeration mode, on the water pipe of the condenser other end, be provided with the V5 valve, be provided with the V1 valve between water-side heat and the V3 valve.
In order to improve the operational effect of Air-Cooled Heat Pump Unit, expansion gear is designed to two groups, one group of A magnetic valve, A expansion valve, D non-return valve by connection is successively formed, another group is made up of the B magnetic valve, B expansion valve, the C non-return valve that connect successively, wherein the outlet of D non-return valve is connected with the refrigeration pipe arrangement of water-side heat 3, the outlet of C non-return valve is connected with the refrigeration pipe arrangement of air side heat exchanger, and the A magnetic valve is connected with the B magnetic valve by the refrigeration pipe arrangement; The A non-return valve that two outlets are relative and the inlet of B non-return valve are connected to and reach between D non-return valve and the water-side heat between C non-return valve and the air side heat exchanger; The reservoir of series connection and the arrival end of device for drying and filtering are connected between the outlet of A non-return valve and B non-return valve, and its port of export is connected between A magnetic valve and the B magnetic valve.
The present invention is the composite wind-cooled heat pump unit with traditional Air-Cooled Heat Pump Unit and water source heat pump units combination, and in summer, Air-Cooled Heat Pump Unit and water source heat pump units can be used for respectively freezing; And when the external environment air themperature is too low in the winter time, produce the hot water (about about 21 ℃) of medium temperature earlier with Air-Cooled Heat Pump Unit, from this hot water, absorb heat with water source heat pump units then, further produce high-temp water source (about about 45 ℃) by the compressor work done, with heat transferred building air conditioning zone, reach purpose by water-air-coil to the space air heating.Have following advantage in the actual moving process:
1, expanded the operating temperature range of source pump, its minimum external environment air themperature that heats can be extended to about-25 ℃ from-5～-10 ℃ always, thereby can effectively solve vast cold region autumn, winter heating problems such as northeast, northwest, North China.
2, can open Air-Cooled Heat Pump Unit and water source heat pump units simultaneously summer, increase the refrigerating capacity of combined heat-pump unit, and when air-conditioning system is in underload, can open Air-Cooled Heat Pump Unit or water source heat pump units separately, so have higher part load performance; Simultaneously, Air-Cooled Heat Pump Unit and water source heat pump units be backup mutually, in case wherein a unit breaks down, just can open another unit.
3, reduce compressor exhaust temperature, improved the heating energy efficiency ratio of unit, improved the motor radiating condition.
4, increased the unit heating capacity, different comparable traditional Air-Cooled Heat Pump Unit that its unit heating capacity is looked the external environment air themperature increases about 30%～50%.
[description of drawings]
Fig. 1 is traditional Air-Cooled Heat Pump Unit systematic schematic diagram.
Fig. 2 is a cooling flow schematic diagram of the present invention.
Fig. 3 is a low-temperature heating schematic flow sheet of the present invention.
Fig. 4 is heating demand and the unit heating capacity variation trend graph with the external environment air themperature.
Fig. 2, in 3: 1-A compressor, 2-four way solenoid valve, 3-water-side heat, the 4-A non-return valve, 5-reservoir, 6-device for drying and filtering, the 7-A non-return valve, 8-A expansion valve, 9-D non-return valve, the 10-air side heat exchanger, 11-gas-liquid separator, 12-B non-return valve, the 13-C non-return valve, 14-B expansion valve, 15-B magnetic valve, the 16-B water pump, 17-evaporimeter, 18-B compressor, the 19-condenser, 20-C expansion valve, 21-cooling tower, the 22-C water pump, 23-A water pump, 24-water-air-coil, the 25-Air-Cooled Heat Pump Unit, 26-composite wind-cooled heat pump unit, 27-water source heat pump units, the 28-V1 valve, 29-V2 valve, 30-V3 valve, the 31-V4 valve, 32-V5 valve, 33-V6 valve, the 34-V7 valve, the 35-M mouth of a river, the 36-N mouth of a river.
[specific embodiment]
Shown in Fig. 3,4: composite wind-cooled heat pump unit 26 is organic combinations of Air-Cooled Heat Pump Unit 25 and water source heat pump units 27, its inside has comprised water pump, water valve and corresponding water pipe, forms central air conditioner system with the water pump and the air-conditioner tail end equipment capable water-air-coil of outside simultaneously:
Air-Cooled Heat Pump Unit 25 comprises A compressor 1, four way solenoid valve 2, air side heat exchanger 10, expansion gear, water-side heat 3 and the gas-liquid separator 11 that is connected by the refrigeration pipe arrangement; Expansion gear is two groups, one group of A magnetic valve 7, A expansion valve 8, D non-return valve 9 by connection is successively formed, another group is made up of the B magnetic valve 15, B expansion valve 14, the C non-return valve 13 that connect successively, wherein the outlet of D non-return valve 9 is connected with the refrigeration pipe arrangement of water-side heat 3, the outlet of C non-return valve 13 is connected with the refrigeration pipe arrangement of air side heat exchanger 10, and A magnetic valve 7 is connected with B magnetic valve 15 by the refrigeration pipe arrangement; The outlet of A non-return valve 4 and B non-return valve 12 is connected relatively and by the refrigeration pipe arrangement, and its inlet is connected to and reaches between D non-return valve 9 and the water-side heat 3 between C non-return valve 13 and the air side heat exchanger 10; The reservoir 5 of series connection and the arrival end of device for drying and filtering 6 are connected between the outlet of A non-return valve 4 and B non-return valve 12, and its port of export is connected between A magnetic valve 7 and the B magnetic valve 15.
Water source heat pump units 27 is made up of the B compressor 18, condenser 19, C expansion valve 20 and the evaporimeter 17 that connect successively through the refrigeration pipe arrangement.
Water circle device comprises the M mouth of a river 35, V2 valve 29, V1 valve 28, water-side heat 3, B water pump 16, V6 valve 33, the N mouth of a river 36, V5 valve 32, condenser 19 and the V4 valve 31 that is connected successively by water pipe, and V4 valve 31 also is connected with the M mouth of a river 35; Wherein: V7 valve 34 in parallel on the B water pump 16, and an end of evaporimeter 17 is connected between V6 valve 33 and B water pump 16, the V7 valve 34 through water pipe, and its other end is connected between V2 valve 29 and the V1 valve 28 through V3 valve 30 by water pipe.
In addition, connect water-air-coil 24 and A water pump 23 successively from the N mouth of a river 36 by water pipe, the delivery port of A water pump 23 is connected with the M mouth of a river 35; The delivery port of C water pump is connected through the water inlet of water pipe with cooling tower 21, and the water inlet of C water pump is connected between V5 valve and the condenser 19 by water pipe, and the delivery port of cooling tower 21 is connected between V4 valve and the condenser 19 by water pipe.
The workflow of the central air conditioner system that is made of the composite wind-cooled heat pump unit is as follows:
1, refrigeration mode
As shown in Figure 2, the composite wind-cooled heat pump unit both can be opened Air-Cooled Heat Pump Unit or water source heat pump units separately under refrigeration mode, also both can be put into operation simultaneously; Under this pattern, the B water pump is in closed condition all the time.
(a), when water source heat pump units and Air-Cooled Heat Pump Unit put into operation simultaneously, A water pump 23, C water pump 22, V1 valve 28, V2 valve 29, V3 valve 30, V6 valve 33, V7 valve 34 are opened; V4 valve 31, V5 valve 32 are closed.Wherein two units that are set to of cooling tower 21 and C water pump 22 are provided by the condition that provides simultaneously.
This moment, Air-Cooled Heat Pump Unit ran on refrigeration mode: the high-temperature high-pressure refrigerant steam that A compressor 1 is discharged enters the air side heat exchanger 10 that is in the external environment through four way solenoid valve 2, take away a large amount of heats that cold-producing medium is produced by the axial flow blower ventilation in condensation process, condensed high pressure is crossed cold refrigerant liquid through A non-return valve 4, reservoir 5, device for drying and filtering 6 and A magnetic valve 7 enter 8 throttling expansions of A expansion valve, low-temperature low-pressure refrigerant gas-fluid two-phase mixture after the expansion enters water-side heat 3 through D non-return valve 9, absorb stream and behind air conditioner water backwater (about about 12 ℃ of the temperature) heat of water-air-coil 24, become superheated steam, flowing to gas-liquid separator 11 through four way solenoid valve 2 again separates, isolated refrigerant vapour is compressed after getting back to A compressor 1 more again, begins new cold-producing medium cyclic process.
For water source heat pump units, the high-temperature high-pressure refrigerant steam that B compressor 18 is discharged enters condenser 19 condensations, the condensation heat that is discharged in the condensation process is passed to the cooling water (about about 30 ℃) of stream from cooling tower 21, water temperature rising (about about 35 ℃) after the cooling water absorption condensation heat, enter cooling tower 21 heat radiations after 22 superchargings of C water pump, water temperature comes back to condenser 19 after reducing (about about 30 ℃).Condensed high pressure is crossed cold refrigerant liquid and is entered 20 throttling expansions of C expansion valve, and the low-temperature low-pressure refrigerant vapour-liquid two-phase mixture after the expansion enters the heat that evaporimeter 17 absorbs air conditioner water (about 12 ℃ of temperature), makes air conditioner water cooling (about about 7 ℃).Superheated refrigerant steam after the heat absorption evaporation is then got back to B compressor 18, begins new circulation.
Stream is from the air conditioner water (about 12 ℃ of temperature) of water-air-coil 24, after 23 superchargings of A water pump, pass through V2 valve 29 earlier, then be divided into two-way, wherein one the tunnel enter the evaporimeter 17 of water source heat pump units through V3 valve 30, heat is discharged to the low-temperature low-pressure refrigerant vapour-liquid two-phase mixture after expanding, temperature decline (about about 7 ℃); Another Lu Zejing V1 valve 28 enters the water-side heat 3 of Air-Cooled Heat Pump Unit, temperature decline (about about 7 ℃) behind the absorption refrigeration agent institute released cold quantity; Afterwards, the two-way air conditioner water enters V6 valve 33 jointly, flows to water-air-coil 24 and convection current is cooled off from the space air of building air conditioning area.
(b), the Air-Cooled Heat Pump Unit isolated operation when refrigeration mode, A water pump 23, V1 valve 28, V2 valve 29, V6 valve 33, V7 valve 34 opened; C water pump 22, V3 valve 30, V4 valve 31, V5 valve 32 are closed.Its cold-producing medium circulation is identical with aforementioned 1 (a), air conditioner water by 23 superchargings of A water pump after successively through V2 valve 29, V1 valve 28 release heat in water-side heat 3, water temperature is reduced to about 7 ℃ from about 12 ℃, lead to water-air-coil 24 and convection current is cooled off from the room circulating air of building air conditioning area through V7 valve 34, V6 valve 33 afterwards, get back to the new circulation of A water pump 23 beginnings at last.
(c), the water source heat pump units isolated operation when refrigeration mode, A water pump 23, C water pump 22, V2 valve 29, V3 valve 30, V6 valve 33 opened; V1 valve 28, V4 valve 31, V5 valve 32, V7 valve 34 are closed.Its cold-producing medium circulation is identical with aforementioned 1 (a) with the cooling water circulation; Air conditioner water by 23 superchargings of A water pump after successively through V2 valve 29, V3 valve 30 release heat in evaporimeter 17, water temperature is reduced to about 7 ℃ from about 12 ℃, lead to water-air-coil 24 and convection current is cooled off from the space air of building air conditioning area through V6 valve 33 afterwards, get back to the new circulation of A water pump 23 beginnings at last.
2, heating mode
The combined heat pump unit is divided into normally and heats (Ta 〉=-5 ℃) usually and two kinds of operational modes of low-temperature heating (common Ta＜-5 ℃) according to the height of the temperature T a of external environment air.
(a), normal heating mode
When the composite wind-cooled heat pump unit moved under normal heating mode, A water pump 23, V1 valve 28, V2 valve 29, V6 valve 33, V7 valve 34 were opened; Water source heat pump units, B water pump 16, C water pump 22, V3 valve 30, V4 valve 31, V5 valve 32 are closed.
The high-temperature high-pressure refrigerant steam that A compressor 1 is discharged enters water-side heat 3 (this moment, function was a condenser) through four way solenoid valve 2, carry out exchange heat and be condensed into high pressure and cross cold refrigerant liquid from the air conditioner water backwater (about about 40 ℃ of temperature) of water-air-coil 24 with stream, afterwards through B non-return valve 12, reservoir 5, device for drying and filtering 6 and B magnetic valve 15 enter 14 throttling expansions of B expansion valve, low-temperature low-pressure refrigerant gas-fluid two-phase mixture after the expansion enters the air side heat exchanger 10 (this moment, function was an evaporimeter) that is in the external environment through C non-return valve 13, by becoming superheated steam behind the axial flow blower ventilation absorption air heat, then flowing to gas-liquid separator 11 through four way solenoid valve 2 again separates, again be compressed again after refrigerant vapour after liquid refrigerant separated is got back to A compressor 1, begin new cold-producing medium cyclic process.Therebetween, stream from the air conditioner water (about 40 ℃) of water-air-coil 24 through 23 superchargings of A water pump after V2 valve 29, V1 valve 28 enter the water-side heat 3 of Air-Cooled Heat Pump Unit, temperature rising (about 45 ℃) after the condensation heat that absorption high-temperature high-pressure refrigerant steam is discharged in the water-side heat condensation process, then getting back to 24 convection current of water-air-coil through V7 valve 34, V6 valve 33 heats from the space air of building air conditioning area, its water temperature descends (about 40 ℃) after the release heat, reenters the new circulation of A water pump 23 beginnings afterwards.
(b), low-temperature heating pattern
When the combined heat pump unit moved under low temperature mode, Air-Cooled Heat Pump Unit, water source heat pump units, A water pump 23, B water pump 16, V1 valve 28, V3 valve 30, V4 valve 31 and V5 valve 32 were opened, and C water pump 22, V2 valve 29, V6 valve 33 and V7 valve 34 are closed.
The Air-Cooled Heat Pump Unit running is identical with aforementioned 2 (a).The recirculated water inflow temperature of different is water-side heat 3 is only about 16 ℃, water temperature rises to about 21 ℃ after the condensation heat that absorption high-temperature high-pressure refrigerant steam is discharged in water-side heat 3 condensation processes, then enter water source heat pump units evaporimeter 17 through V1 valve 28, V3 valve 30, water temperature drops to about 16 ℃ behind the cold that the low-temperature low-pressure refrigerant vapour-liquid two-phase mixture of absorption water source heat pump units is discharged in evaporation process, comes back to the water-side heat 3 of Air-Cooled Heat Pump Unit after 16 superchargings of B water pump.Meanwhile, the water source heat pump units low-temperature low-pressure refrigerant absorbs in the water-side heat 3 of Air-Cooled Heat Pump Unit and enters B compressor 18 after the recirculated water heat becomes superheated steam and be compressed into high temperature and high pressure steam, entering condenser 19 afterwards is condensed, condensed high pressure is crossed cold refrigerant liquid and is then flow to 20 throttling expansions of C expansion valve, the back low-temperature low-pressure refrigerant vapour-liquid two-phase mixture that expands is then got back to evaporimeter 17 again, begins new circulation.Then will the flow through air-conditioner circulating water temperature of A water pump 23 and V4 valve 31 of a large amount of condensation heat that high-temperature high-pressure refrigerant steam is discharged in condensation process is heated to about 45 ℃ from about 40 ℃, air-conditioner circulating water after temperature rises enters water-air-coil 24 through V5 valve 32, and stream heats from the space air of building air conditioning area.
Claims (3)
1, composite wind-cooled heat pump unit comprises:
One Air-Cooled Heat Pump Unit comprises the A compressor (1), four way solenoid valve (2), air side heat exchanger (10), expansion gear and the water-side heat (3) that are connected by the refrigeration pipe arrangement;
It is characterized in that a water source heat pump units cooperates with described Air-Cooled Heat Pump Unit through water circle device:
Described water source heat pump units comprises B compressor (18), condenser (19), C expansion valve (20) and the evaporimeter (17) that is connected by the refrigeration pipe arrangement;
Described water circle device comprises through water pipe and is connected on B water pump (16) and V3 valve (30) between water-side heat (3) and the evaporimeter (17), B water pump (16) is gone up V7 valve in parallel (34), condenser (19) is gone up the series connection water pipe, the two ends of water pipe are provided with the M mouth of a river (35) and the N mouth of a river (36), one end of one V2 valve (29) is connected with the M mouth of a river (35), its other end is connected between V3 valve (30) and the water-side heat (3), one end of another V6 valve (33) is connected with the N mouth of a river (35), its other end is connected between V7 valve (34) and the B water pump (16), and the water pipe of condenser (19) one ends is provided with V4 valve (31).
2, composite wind-cooled heat pump unit according to claim 1 is characterized in that V4 valve (31) is positioned between the M mouth of a river (35) and the condenser (19), is provided with V5 valve (32) between condenser (19) and the N mouth of a river (36); Be provided with V1 valve (28) between water-side heat (3) and the V3 valve (30).
3, composite wind-cooled heat pump unit according to claim 1 and 2, it is characterized in that described expansion gear is two groups, one group of A magnetic valve (7), A expansion valve (8), D non-return valve (9) by connection is successively formed, another group is made up of the B magnetic valve (15), B expansion valve (14), the C non-return valve (13) that connect successively, wherein the outlet of D non-return valve (9) is connected with the refrigeration pipe arrangement of water-side heat 3, the outlet of C non-return valve (13) is connected with the refrigeration pipe arrangement of air side heat exchanger (10), and A magnetic valve (7) is connected with B magnetic valve (15) by the refrigeration pipe arrangement; The A non-return valve (4) that two outlets are relative and the inlet of B non-return valve (12) are connected to and reach between D non-return valve (9) and the water-side heat (3) between C non-return valve (13) and the air side heat exchanger (10); The reservoir (5) of series connection and the arrival end of device for drying and filtering (6) are connected between the outlet of A non-return valve (4) and B non-return valve (12), and its port of export is connected between A magnetic valve (7) and the B magnetic valve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111436 CN1228588C (en) | 2002-04-20 | 2002-04-20 | Combined air-cooled heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111436 CN1228588C (en) | 2002-04-20 | 2002-04-20 | Combined air-cooled heat pump unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1451935A true CN1451935A (en) | 2003-10-29 |
| CN1228588C CN1228588C (en) | 2005-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02111436 Expired - Fee Related CN1228588C (en) | 2002-04-20 | 2002-04-20 | Combined air-cooled heat pump unit |
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| Country | Link |
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| CN (1) | CN1228588C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465542C (en) * | 2004-07-01 | 2009-03-04 | 大金工业株式会社 | Hot-water supply device |
| CN102434923A (en) * | 2011-12-30 | 2012-05-02 | 泰豪科技股份有限公司 | Air conditioner cooling device with refrigerant serving as intermediate cooling medium |
| CN105241145A (en) * | 2015-11-24 | 2016-01-13 | 广东申菱环境系统股份有限公司 | Control method of compensation type dual-source heat pump cold and hot water unit |
| CN106288506A (en) * | 2015-05-18 | 2017-01-04 | 重庆通用贝园制冷空调设备有限责任公司 | A kind of air conditioning system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922820A (en) * | 2010-09-15 | 2010-12-22 | 北京永源热泵有限责任公司 | Two-stage condensation air-water heat pump device |
-
2002
- 2002-04-20 CN CN 02111436 patent/CN1228588C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465542C (en) * | 2004-07-01 | 2009-03-04 | 大金工业株式会社 | Hot-water supply device |
| US7640763B2 (en) | 2004-07-01 | 2010-01-05 | Daikin Industries, Ltd. | Hot water supply system |
| CN102434923A (en) * | 2011-12-30 | 2012-05-02 | 泰豪科技股份有限公司 | Air conditioner cooling device with refrigerant serving as intermediate cooling medium |
| CN106288506A (en) * | 2015-05-18 | 2017-01-04 | 重庆通用贝园制冷空调设备有限责任公司 | A kind of air conditioning system |
| CN105241145A (en) * | 2015-11-24 | 2016-01-13 | 广东申菱环境系统股份有限公司 | Control method of compensation type dual-source heat pump cold and hot water unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1228588C (en) | 2005-11-23 |
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