CN101280941A - Double-cold source heat pump centralized type air conditioner device - Google Patents
Double-cold source heat pump centralized type air conditioner device Download PDFInfo
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- CN101280941A CN101280941A CNA2008100347581A CN200810034758A CN101280941A CN 101280941 A CN101280941 A CN 101280941A CN A2008100347581 A CNA2008100347581 A CN A2008100347581A CN 200810034758 A CN200810034758 A CN 200810034758A CN 101280941 A CN101280941 A CN 101280941A
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Abstract
The invention relates to a double-cold source heat pump centralized air conditioning apparatus, pertaining to air conditioner system energy efficient technology field. The inventive system includes a cooling water system, a secondary refrigerant water system, a chilled water system, an end air-processing system, a double-cold source heat pump air conditioning apparatus, and a plate heat exchanger. The cooling water system connects to the water cooling condenser in the double-cold source heat pump air conditioning apparatus. The secondary refrigerant water system respectively connects to the evaporator, plate heat exchanger of the double-cold source heat pump air conditioning apparatus, separately used for heat exchange with the cooling water system and chilled water system. The chilled water system connects to the plate type heat exchanger for heat exchange with the secondary refrigerant water system and conveying energy to air conditioner wind system by the end air-processing system. Finally the energy is conveyed to desired position by air pipes. The inventive system can avoid energy consumption height, which reduces operation electric charge and reduce peak load of electric network, thus excellent social benefit and economic benefit are obtained.
Description
Technical field
The present invention relates to a kind of system of central air-conditioning system field of energy-saving technology, specifically is a kind of double-cold source heat pump centralized air-conditioning device.
Background technology
The central air-conditioning system heat pump main frame of Shi Yonging all is the single type of cooling in the market, with air source, water source or source, ground is the device of the type of cooling, wherein air source heat pump is because it is energy-conservation, easy for installation, do not need special-purpose machine room, unit arrange to take up an area of advantages such as little, therefore is used widely in the office building in area, down town, market, hotel etc.Consumed power during the air source heat pump operation; If adopt air source heat pump as the main frame in the ice-storage system,, can't promote because efficient is lower, economical poor when the ice-reserving operating mode is moved.And ice cold-storage centralized air-conditioning device in the market can only provide the low-temperature receiver of summer operation, and the thermal source of winter operation can not be provided.So the central air-conditioning system heat pump assembly is carried out comprehensive application and reducing energy consumption, very big social benefit and economic benefit is just arranged.
Prior art is introduced: as shown in Figure 1, composition for heat pump apparatus of air source in the present normally used central air-conditioning system, critical piece comprises: heat pump air conditioner compressor 51, four-way change-over valve 57, air-cooled condenser 53, condensation fan 54, evaporimeter 56, chilled water pump PU, end-equipment G are formed by connecting by water system, wind system.Air source heat pump air-conditioner compressor 51 is in service, is carrying cold-producing medium, is transported to different heat exchangers by the flow process of four-way change-over valve 57 control and carries out neither endothermic nor exothermic.Air-cooled condenser 53 discharges used heat or absorbs heat to atmospheric environment.Evaporimeter 56 is connected with end-equipment G, wind system by water system, absorbs with air conditioning area or emits heat to need, provides comfortable air ambient to air conditioning area.
Central air-conditioning systems such as general office building and market all are to use by day, use the period to be in the mains supply peak time, and the air-conditioning system electricity consumption is the key factor that causes the electrical network peak load.Summer temperature is soaring year by year, Air-Cooled Heat Pump Unit raises along with ambient air temperature and descends, descends with chilled water temperature in summer operation efficient, when causing Air-Cooled Heat Pump Unit as the operation ice-reserving, and operational efficiency decline, lost the value that is applied to ice-storage system, this is an one; Its two, what ice-chilling air conditioning system in the market mainly used is Worm type water-cooled handpiece Water Chilling Units, it can only run on the summer cooling operating mode, winter heating operation needs other distribution firing equipment and thermal storage equipment; Its three, also can see a spot of earth source heat pump unit in the market and be applied to ice-chilling air conditioning system, it can solve the summer cooling operating mode, winter heating's operating mode; But because it needs very big place to arrange buried heat exchanger tube, this just can not use for the relatively more nervous user in soil, big city; Generally only in small-sized central air-conditioning system, saw application.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of double-cold source heat pump centralized air-conditioning device is provided, efficiency when effectively having improved air source heat pump air-conditioner main frame ice-reserving, refrigerating operaton has solved the problem that the ice-storage air-conditioning device can not provide the heating thermal source winter.System of the present invention can dodge peak of power consumption, and " peak load shifting " reduces the operation electricity charge, has reduced the peak load of electrical network, and good social benefit and economic benefit are arranged.
The present invention is achieved through the following technical solutions, and band double-cold source heat pump centralized air-conditioning device of the present invention comprises: cooling water system, refrigerating medium water system, chilled water system, terminal air treatment system, double-cold source heat pump aircondition, plate type heat exchanger.Water-cooled condenser in cooling water system and the double-cold source heat pump aircondition is connected.The refrigerating medium water system is connected to evaporimeter, the plate type heat exchanger of double-cold source heat pump aircondition, is used for respectively carrying out carrying out heat exchange with cooling water system, chilled water system.Thereby chilled water system connects plate type heat exchanger can carry out heat exchange and send energy to air conditioning duct system by terminal air treatment system with the refrigerating medium water system, and being transported to by airduct at last needs the place.
Described cooling water system comprises: cooling water pump, cooling tower, recuperation of heat water pump, hot water return water tank.Cooling water pump and recuperation of heat water pump one end directly link to each other with water-cooled condenser in the double-cold source heat pump aircondition, the cooling water pump other end and cooling tower, and the recuperation of heat water pump other end links to each other with the recuperation of heat water tank, forms pipe-line system in parallel.By cooling tower or hot water return water tank the heat in the water-cooled condenser is discharged to the external world.
Described refrigerating medium water system comprises: refrigerating medium water pump, ice storage unit, refrigerating medium expansion tank, automatic valve V1, automatic valve V2, automatic valve V3, automatic valve V4.Refrigerating medium water pump one end links to each other with the evaporimeter of double-cold source heat pump aircondition, contact successively with plate type heat exchanger, ice storage unit respectively then and be connected, its other end is connected with refrigerating medium expansion tank, plate type heat exchanger respectively, thus water route circulation of whole refrigerating medium system's formation.Automatic valve V1 is the stop valve that enters ice storage unit, and an end connects the ice storage unit import, and the other end connects evaporator outlet; Automatic valve V2 connects the import and export of ice storage unit respectively as the by-passing valve of ice storage unit; Automatic valve V3 is the by-passing valve of plate type heat exchanger, connects the import and export of plate type heat exchanger respectively; Automatic valve V4 is the stop valve that enters plate type heat exchanger, and an end connects the ice storage unit outlet, and the other end connects the plate type heat exchanger import; By the conversion of automatic valve V1, V2, V3, V4, realize the variation in water route, reach ice-reserving and put cold purpose.
Described chilled water system comprises: chilled water pump, water knockout drum, water collector, expansion tank.Chilled water pump one end links to each other with plate type heat exchanger, and the other end links to each other with water knockout drum, and the other end of water knockout drum is connected to the import of end-equipment, and the outlet of end-equipment is connected with water collector, and the other end of water collector is communicated with expansion tank and forms a water route circulation.
End-equipment, airduct, air outlet that described terminal air treatment system is served as reasons and connected successively also comprise parts such as return air inlet, form the air-treatment circulatory system.
Described double-cold source heat pump aircondition comprises: compressor, stop valve, air-cooled condenser, condensation fan, water-cooled condenser, evaporimeter, cross valve, heating power expansion valve, liquid-sighting glass, cold-producing medium device for drying and filtering, reservoir, air-breathing gas-liquid separator, some check-valves are formed.Compressor air-discharging is connected with cross valve, the water-cooled condenser of parallel connection respectively.Cross valve one end connects air-cooled condenser, and an end connects evaporimeter, and intermediate ends is connected in the suction end of compressor again via air-breathing gas-liquid separator.Reservoir, cold-producing medium device for drying and filtering, liquid-sighting glass, heating power expansion valve connects in turn, and outlet is connected reservoir one end with water-cooled condenser with the air-cooled condenser outlet, and outlet is connected its other end of heating power expansion valve with air-cooled condenser with evaporator.Condensation fan and air-cooled condenser are staggered relatively.
The present invention possesses refrigeration, ice-reserving, heats three big functions, can utilize air source and water source as the exchange heat medium, possesses higher Energy Efficiency Ratio when realizing function, thereby reaches energy-conservation and balance electrical network peak load.Owing to the influence of environment temperature, its average efficiency is less than the water-cooled handpiece Water Chilling Units during air-cooled heat pump formula handpiece Water Chilling Units refrigeration, if as the ice-reserving main frame, its service efficiency has not possessed the instructions for use on the economic implications, and meaning only possesses skills; Though benefit when the water-cooled handpiece Water Chilling Units can satisfy refrigeration, ice-reserving can't realize the heat pump heat-production functions, need realize Winter heat supply with other heat form devices such as boilers.The function of the multiple refrigerating plant of integrated application of the present invention in same air-conditioning system, by in the source pump refrigeration system, increasing a heat exchanger, make this heat exchanger possess condensation and heat recovery function simultaneously, take into full account the reliable of refrigeration system and efficient again, utilize that automatic technology realizes freezing, heats, the conversion of ice-reserving; Use the water-cooled pattern during refrigeration, can freeze, recuperation of heat and ice-reserving; Use air-cooled pattern when heating, can carry out heat supply and use.
The present invention can be applicable to the technological air conditioning system of comfort air conditioning system systems such as office building, market and some factory.
Compared with prior art, the present invention has following beneficial effect: improved air source heat pump air-conditioner main frame ice-reserving operational efficiency, and easy to utilize; Heat pump air conditioner main frame, ice storage unit and system automatic control three parts have obtained reasonably system matches; Make the air source heat pump air-conditioner main frame realize the requirement of summer cooling and ice-reserving, Winter heat supply efficiently; Guaranteed that whole system according to the operation of load prediction scheme, makes it to become the higher energy-efficient central air-conditioning system of automaticity; Making the ice-chilling air conditioning system of being made up of the air source heat pump air-conditioner main frame have more wide popularization and application is worth.
Description of drawings
Fig. 1 is the principle process schematic diagram of heat pump type air conditioning system of the prior art;
Fig. 2 is the principle schematic of double-cold source heat pump aircondition in the system of the present invention;
Fig. 3 is the overall structure schematic diagram of system of the present invention;
Fig. 4 is the daily load figure of typical ice-storage air-conditioning system in the prior art.
Description of symbols:
Cooling water system-1, refrigerating medium water system-2, chilled water system-3, terminal air treatment system-4, double-cold source heat pump aircondition-5, plate type heat exchanger-6, cooling water pump-11, cooling tower-12, recuperation of heat water pump-13, hot water return water tank-14, refrigerating medium water pump-21, ice storage unit-23, refrigerating medium expansion tank-24, chilled water pump 31-, water knockout drum-32, water collector-33, expansion tank-34, end-equipment-41, airduct-42, air outlet-43, return air inlet-44, compressor-51, stop valve-52, air-cooled condenser-53, condensation fan-54, water-cooled condenser-55, evaporimeter-56, cross valve-57, heating power expansion valve-58, liquid-sighting glass-59, cold-producing medium device for drying and filtering-510, reservoir-511, air-breathing gas-liquid separator-512, check-valves-513.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 3, system architecture of the present invention comprises: cooling water system 1, refrigerating medium water system 2, chilled water system 3, terminal air treatment system 4, double-cold source heat pump aircondition 5, plate type heat exchanger 6.Their annexation is: the water-cooled condenser 55 in cooling water system 1 and the double-cold source heat pump aircondition 5 is connected.Refrigerating medium water system 2 is connected to evaporimeter 56, the plate type heat exchanger 6 of double-cold source heat pump aircondition 5, is used for respectively carrying out carrying out heat exchange with cooling water system 1, chilled water system 3.Thereby chilled water system 3 connects plate type heat exchangers 6 can carry out heat exchange and send energy to air conditioning duct system by terminal air treatment system 4 with refrigerating medium water system 2, and being transported to by airduct at last needs the place.
Described cooling water system 1 comprises: cooling water pump 11, cooling tower 12, recuperation of heat water pump 13, hot water return water tank 14, cooling water pump 11 and recuperation of heat water pump 13 1 ends directly link to each other with water-cooled condenser 55 in the double-cold source heat pump aircondition 5, cooling water pump 11 other ends and cooling tower 12, recuperation of heat water pump 13 other ends link to each other with recuperation of heat water tank 14, form pipe-line system in parallel.By cooling tower 12 or hot water return water tank 14 heat in the water-cooled condenser 55 is discharged to the external world.
Described refrigerating medium water system 2 comprises: refrigerating medium water pump 21, ice storage unit 23, refrigerating medium expansion tank 24, automatic valve V1, automatic valve V2, automatic valve V3, automatic valve V4.Refrigerating medium water pump 21 one ends link to each other with the evaporimeter 56 of double-cold source heat pump aircondition 5, be connected successively with plate type heat exchanger 6, ice storage unit 23 respectively then, its other end is connected with refrigerating medium expansion tank 24, plate type heat exchanger 6 respectively, thereby whole refrigerating medium water system 2 constitutes a water route circulation.Automatic valve V1 is the stop valve that enters ice storage unit 23, and an end connects ice storage unit 23 imports, and the other end connects evaporimeter 56 outlets; Automatic valve V2 connects the import and export of ice storage unit 23 respectively as the by-passing valve of ice storage unit 23; Automatic valve V3 is the by-passing valve of plate type heat exchanger 6, connects the import and export of plate type heat exchanger 6 respectively; Automatic valve V4 is the stop valve that enters plate type heat exchanger 6, and an end connects ice storage unit 23 outlets, and the other end connects plate type heat exchanger 6 imports; By the conversion of automatic valve V1, V2, V3, V4, realize the variation in water route, reach ice-reserving and put cold purpose.
The ice bucket that described ice storage unit 23 is made up of staving, heat transfer coils.When fluid temperature in the heat transfer coils was lower than 0 ℃, water was congealed into ice, and when temperature was higher in the heat transfer coils, ice was converted to water again after melting.
Described chilled water system 3 comprises: chilled water pump 31, water knockout drum 32, water collector 33, expansion tank 34.Chilled water pump 31 1 ends link to each other with plate type heat exchanger 6, the other end links to each other with water knockout drum 32, the other end of water knockout drum 32 is connected to the import of end-equipment 41, and the outlet of end-equipment 41 is connected with water collector 33, and the other end of water collector 33 is communicated with expansion tank 34 and forms a water route circulation.
End-equipment 41, airduct 42, air outlet 43 that described terminal air treatment system 4 is served as reasons and connected successively also comprise return air inlet 44 parts such as grade, form the air-treatment circulatory system.
As shown in Figure 2, described double-cold source heat pump aircondition 5 comprises: compressor 51, stop valve 52, air-cooled condenser 53, condensation fan 54, water-cooled condenser 55, evaporimeter 56, cross valve 57, heating power expansion valve 58, liquid-sighting glass 59, cold-producing medium device for drying and filtering 510, reservoir 511, air-breathing gas-liquid separator 512, some check-valves 513 are formed.Compressor 51 exhausts are connected with cross valve 57, the water-cooled condenser 55 of parallel connection respectively.Cross valve 57 1 ends connect air-cooled condenser 53, one ends and connect evaporimeter 56, and intermediate ends is connected in the suction end of compressor 51 again via air-breathing gas-liquid separator 512.Reservoir 511, cold-producing medium device for drying and filtering 510, liquid-sighting glass 59, heating power expansion valve 58 connects in turn, 55 outlets are connected reservoir 511 one ends with water-cooled condenser with air-cooled condenser 53 outlets, and 53 outlets are connected heating power expansion valve 58 its other ends with air-cooled condenser with evaporimeter 56 imports.Condensation fan 54 is staggered relatively with air-cooled condenser 53.Under the effect of check-valves 513, pass through reservoir 511, cold-producing medium device for drying and filtering 510, liquid-sighting glass 59 through the cold-producing medium behind the water-cooled condenser 55 successively, heating power expansion valve 58 arrives evaporimeter 56 then.
The operation principle process of described double-cold source heat pump aircondition 5 is:
Under the ice-reserving operating mode, the high temperature and high pressure gas that compressor 51 is discharged directly arrives water-cooled condenser 55, be transported to reservoir 511 after being cooled to high-temp liquid, pass through cold-producing medium device for drying and filtering 510, liquid-sighting glass 59 again, heating power expansion valve 58, finish heat absorption work to evaporimeter 56 then, pass through cross valve 57, air-breathing gas-liquid separator 512 again, the course of work of getting back to compressor 51 suction ends at last.In evaporimeter 56, refrigerating medium solution is cooled to-6 ℃, as the ice-reserving cooling;
Under air conditioning condition, the high temperature and high pressure gas that compressor 51 is discharged, identical cooling flow route is got back to compressor 51 suction ends when process and ice-reserving operating mode, and difference is the course of work that produces 5 ℃ of refrigerating medium solution in the evaporimeter 56;
Under the heat pump operating mode, the high temperature and high pressure gas that compressor 51 is discharged at first passes through cross valve 57, in evaporimeter 56, carry out heat release then, cold-producing medium is transported to reservoir 511 after being cooled into high-temp liquid, pass through device for drying and filtering 510, liquid-sighting glass 59 again, heating power expansion valve 58 arrives air-cooled condenser 53 then, pass through cross valve 57 air-breathing gas-liquid separators 512, the course of work of getting back to compressor 51 suction ends at last again.In evaporimeter 56, refrigerating medium solution is heated to 45 ℃ as heat supply.
System of the present invention also comprises automatic control system, automatic control system is the refrigeration station central controller, by industrial computer, control software, sensor and executing agency (as various motor-driven valves, water pump) etc. a cover complex control system of forming, can start handpiece Water Chilling Units, water pump, electrically operated valve and end-equipment automatically, and following the tracks of the duty that ruuning situation adjusts three operating mode units (being double-cold source heat pump aircondition 5) at any time, the assurance system is operation efficiently reliably.
As shown in Figure 3, the double-cold source heat pump central air-conditioning system of band recuperation of heat of the present invention ice cold-storage heat, freeze, ice the cold-storage effect and workflow as follows:
One, the water cooled refrigeration pattern:
Self-con-tained unit is set in refrigerating state; Close condensation fan, confirm cooling water pump 11 and chilled water pump 31 operations normal back start, double-cold source heat pump aircondition 5 promptly operates in the water cooled refrigeration pattern.
(1) ice-reserving operating mode operation: utilize time-consuming section of low-price electricity in night, double-cold source heat pump aircondition 5 runs on the water cooled refrigeration pattern, finishes refrigerating medium solution through evaporimeter 56, refrigerating medium water pump 21, do the cold-storage operation to ice storage unit 23; Double-cold source heat pump aircondition 5 also can be moved in higher efficiency section.
(2) air conditioning condition operation: by day the peak value electricity price period, stop or partly stopping 5 operations of double-cold source heat pump aircondition; Cold with ice storage unit 23 stores moves to the air-conditioning system cooling through ice storage unit 23, refrigerating medium water pump 21, plate type heat exchanger 6, chilled water pump 31 by refrigerating medium; Thereby reduce 5 operations of peak of power consumption period by day of double-cold source heat pump aircondition, reduced the electricity charge of air-conditioning system operation; Reduce the peak value electric weight of electrical network on daytime, had good social benefit.
Two, air-cooled heating mode:
Close water-cooled condenser refrigerant inlet pipeline ball valve, open the air-cooled condenser cold-producing medium and import and export the pipeline ball valve, self-con-tained unit is set in the state of heating; Open the condenser fan switch, confirm refrigerating medium water pump 21 operations normal back start, double-cold source heat pump aircondition 5 promptly operates under the air-cooled heat pump heating mode, unit absorbs heat from air-cooled condenser 53, pass to refrigerating medium solution by evaporimeter 56, through plate type heat exchanger 6 heat is transferred to chilled water system 3, to the air-conditioning system heat supply.In contrast to electrical heating to the air-conditioning system heat supply, the heating efficiency of Air-Cooled Heat Pump Unit is greater than more than 2 times, has energy-saving effect preferably.
As shown in Figure 4, with the explanation of load as the effect of ice-reserving peak load shifting:
Need the air-conditioning load for example with 10:00-11:00, this period needs cold 860KW altogether, and needing power consumption according to the conventional water-cooling screw rod machine unit interval is 860KW/4.8=179KW, and annotating 4.8 is water-cooling screw rod machine Cop value; If adopt de-icing technology of the present invention, only need airborne 520KW cold, rely on ice-melt 340KW, water-cooling screw rod machine unit interval power consumption: 520KW/4.8=108KW; Deduction ice-melt pump operation 18.5KW; Can lack power consumption 52.5KW in unit interval; Save 30% aggregate demand approximately.
The explanation of ice-reserving economic benefit:
According to 0.97 yuan/KW of 10:00-11:00 electricity price, night, 0.26 yuan/KW electricity price was to the period is done calculating for example: night, ice-making capacity 340KW needed consumes power equally: 340KW/4.8/0.6=118KW, and annotate: 0.6 is efficiency factor; Need electricity charge 118KW * 0.26 yuan/KW=30.68 unit; If directly produce 340K cold with handpiece Water Chilling Units daytime, needing the electricity charge is 340KW/4.8 * 0.97 yuan/KW=68.7 unit; Can reduce expenses 38.02 yuan.
This shows, utilize the electricity of low ebb price in night to produce cold and be stored into the peak value period on daytime and use not only have good economic benefits, also have good social benefit simultaneously;
System of the present invention possesses heat-production functions simultaneously, can save heat supply in winter boiler one cover, and its comprehensive benefit is fairly obvious.
Claims (6)
1. double-cold source heat pump centralized air-conditioning device, comprise: cooling water system, refrigerating medium water system, chilled water system, terminal air treatment system, double-cold source heat pump aircondition, plate type heat exchanger, it is characterized in that, water-cooled condenser in cooling water system and the double-cold source heat pump aircondition is connected, the refrigerating medium water system is connected to evaporimeter, the plate type heat exchanger of double-cold source heat pump aircondition, chilled water system connects plate type heat exchanger, and sends energy to air conditioning duct system by terminal air treatment system.
2. double-cold source heat pump centralized air-conditioning device as claimed in claim 1, it is characterized in that, described cooling water system comprises: cooling water pump, cooling tower, recuperation of heat water pump, hot water return water tank, cooling water pump and recuperation of heat water pump one end directly link to each other with water-cooled condenser in the double-cold source heat pump aircondition, the cooling water pump other end and cooling tower, the recuperation of heat water pump other end links to each other with the recuperation of heat water tank, forms pipe-line system in parallel.
3. double-cold source heat pump centralized air-conditioning device as claimed in claim 1, it is characterized in that, described refrigerating medium water system comprises: refrigerating medium water pump, ice storage unit, refrigerating medium expansion tank, automatic valve V1, automatic valve V2, automatic valve V3, automatic valve V4, refrigerating medium water pump one end links to each other with the evaporimeter of double-cold source heat pump aircondition, contact successively with plate type heat exchanger, ice storage unit respectively then and be connected, its other end is connected with refrigerating medium expansion tank, plate type heat exchanger respectively, thus water route circulation of whole refrigerating medium system's formation;
Automatic valve V1 is the stop valve that enters ice storage unit, and an end connects the ice storage unit import, and the other end connects evaporator outlet; Automatic valve V2 connects the import and export of ice storage unit respectively as the by-passing valve of ice storage unit; Automatic valve V3 is the by-passing valve of plate type heat exchanger, connects the import and export of plate type heat exchanger respectively; Automatic valve V4 is the stop valve that enters plate type heat exchanger, and an end connects the ice storage unit outlet, and the other end connects the plate type heat exchanger import.
4. double-cold source heat pump centralized air-conditioning device as claimed in claim 1, it is characterized in that, described chilled water system comprises: chilled water pump, water knockout drum, water collector, expansion tank, chilled water pump one end links to each other with plate type heat exchanger, the other end links to each other with water knockout drum, the other end of water knockout drum is connected to the import of end-equipment, and the outlet of end-equipment is connected with water collector, and the other end of water collector is communicated with expansion tank and forms a water route circulation.
5. double-cold source heat pump centralized air-conditioning device as claimed in claim 1 is characterized in that, end-equipment, airduct, air outlet that described terminal air treatment system is served as reasons and connected successively also comprise return air inlet, forms the air-treatment circulatory system.
6. double-cold source heat pump centralized air-conditioning device as claimed in claim 1, it is characterized in that, described double-cold source heat pump aircondition comprises: compressor, stop valve, air-cooled condenser, condensation fan, water-cooled condenser, evaporimeter, cross valve, heating power expansion valve, liquid-sighting glass, cold-producing medium device for drying and filtering, reservoir, air-breathing gas-liquid separator, some check-valves, compressor air-discharging are connected with cross valve, the water-cooled condenser of parallel connection respectively; Cross valve one end connects air-cooled condenser, and an end connects evaporimeter, and intermediate ends is connected in the suction end of compressor again via air-breathing gas-liquid separator; Reservoir, cold-producing medium device for drying and filtering, liquid-sighting glass, heating power expansion valve connects in turn, and outlet is connected reservoir one end with water-cooled condenser with the air-cooled condenser outlet, and outlet is connected its other end of heating power expansion valve with air-cooled condenser with evaporator; Condensation fan and air-cooled condenser are staggered relatively.
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| CNA2008100347581A CN101280941A (en) | 2008-03-18 | 2008-03-18 | Double-cold source heat pump centralized type air conditioner device |
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