CN1128316C - Cold and heat accumulation type air conditioner with heat pump - Google Patents
Cold and heat accumulation type air conditioner with heat pump Download PDFInfo
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- CN1128316C CN1128316C CN99109661A CN99109661A CN1128316C CN 1128316 C CN1128316 C CN 1128316C CN 99109661 A CN99109661 A CN 99109661A CN 99109661 A CN99109661 A CN 99109661A CN 1128316 C CN1128316 C CN 1128316C
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- 238000009825 accumulation Methods 0.000 title abstract description 7
- 238000005338 heat storage Methods 0.000 claims description 80
- 230000008676 import Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 17
- 238000005057 refrigeration Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 238000001704 evaporation Methods 0.000 description 8
- 230000001172 regenerating effect Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention belongs to a cool and heat accumulation hot pump air conditioner, which is composed of an outdoor machine, a heat accumulation groove module and an indoor unit. The structure is characterized in that an electromagnetic valve and an electronic expansion valve are controlled to be opened according to certain program control through the combination of components and structural connection relations. The present invention can realize three operation modes, which are cool and heat accumulation operation, cool and heat taking operation and cool and heat making operation. The present invention has the advantages of simple structure, convenient assembly and low cost. Great social benefits and economic benefits can be generated for decreasing the configuration capacity of an electric power system and electric power load equilibrium and realizing 'peak shifting and valley filling 'for a power supply network.
Description
Affiliated field
The invention belongs to cold-storage and thermal storage type heat pump air conditioner field.
Background technology
Along with the high speed development of economic construction, countries in the world face the power supply shortage situation.Therefore, online " peak load shifting " of power supply is problem anxious to be solved.Along with the enforcement of worldwide time-of-use tariffs, the cold-storage and thermal storage type air conditioner begins developed, has been applied in the pump type heat variable refrigerant volume air-conditioning system since nineteen ninety-five.HIT has delivered " ice heat accumulating type PVC Le マ Le チ ェ ァ コ ソ " system at the freezing magazine Vol.70 of nineteen ninety-five among the No808.As shown in accompanying drawing 1, it is made up of off-premises station, heat storage tank module and indoor units.Night when indoor set all quits work, close heat storage tank module magnetic valve E1, opens solenoid valve E2, this system is by electric expansion valve V1 throttling, to the heat storage medium cold-storage.Get by day when cold, close heat storage tank module magnetic valve E1, magnetic valve E2, electric expansion valve V1 standard-sized sheet.Cold-producing medium is condensation and cold excessively in outdoor heat converter C, heat storage tank, and the condensing pressure of reduction system increases the degree of superheat, reduces the compressor power consumption, improves refrigerating capacity, thereby reaches the effect that electric power network is realized " peak load shifting ", equal permanent load.This system simple in structure, cost is lower, assembly unit is convenient, can realize cold-storage, get cold operation and heating operation.But there is following shortcoming: 1. can only after indoor set is out of service fully, could begin the cold-storage operation, can not realize the operation of part cold-storage.2. can not realize accumulation of heat, part regenerative operation in the winter time.For this reason, Mitsubishi Electric Co. was at Mitsubishi Electric's skill newspaper in 1996, and Vol.70 discloses " the hot マ Le チ ェ ァ コ ソ of ice storage " system among the No8.As shown in accompanying drawing 2, it is on the system-based that Hitachi, Ltd proposes, and has set up a refrigerated medium pump D, a subcooler F, three magnetic valve E and two electric expansion valve V.Refrigerated medium pump D is actually the compressor of a low compression ratio.Make this system can be implemented in refrigeration and during heating operation, all respectively have three kinds of operational modes, i.e. cold-storage, regenerative operation are got cold, heat-obtaining operation and compressor cooling, heating operation.This type systematic is utilize to reduce condensation temperature or improve evaporating temperature, reduces compression ratio, the compressor power consumption when reducing the operation of compressor peak power and realize " peak load shifting ".Adopt the shortcoming of this type systematic to be: complex structure, it is more that magnetic valve, electric expansion valve are used, and need set up compressor, subcooler, and cost is risen significantly, and not quick detachable assembly unit.
Summary of the invention
The objective of the invention is the shortcoming that exists in the above-mentioned prior art, provide a kind of both simple in structure, cost is low, assembly unit is convenient, can realize freezing, get cold, cold-storage simultaneously again, heat, the cold-storage and thermal storage type heat pump air conditioner of heat-obtaining, accumulation of heat.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows: a kind of cold-storage and thermal storage type heat pump air conditioner, it is made up of off-premises station, heat storage tank module and indoor units.Off-premises station mainly comprises frequency-changeable compressor, cross valve, heat exchanger and outdoor electric expansion valve, the heat storage tank module comprises heat storage tank, first electric expansion valve, second electric expansion valve and first magnetic valve, second magnetic valve, the 3rd magnetic valve, heat exchanger and phase-transition heat-storage medium are housed in heat storage tank, and indoor units is to be made of a plurality of indoor heat converters and the indoor electric expansion valve that equates with its quantity.Its design feature is: the compressor exhaust pipe of described off-premises station and cross valve import are joined, cross valve outlet respectively with heat exchanger, compressor suction duct and heat storage tank module on incoming interface join, the heat exchanger other end and outdoor electric expansion valve join, and incoming interface joins under the outdoor electric expansion valve other end and the heat storage tank module.On the described heat storage tank module incoming interface and on it outgoing interface and the 3rd magnetic valve be connected, the 3rd magnetic valve other end joins with second magnetic valve, first electric expansion valve, the first electric expansion valve other end inserts heat storage tank, the heat storage tank other end and second electric expansion valve join, incoming interface, first magnetic valve join under the second electric expansion valve other end and the heat storage tank module, and outgoing interface joins under the first magnetic valve other end and second magnetic valve, the heat storage tank module.A plurality of indoor heat converters of described indoor units are connected in series the back upper and lower outgoing interface with the heat storage tank module in parallel respectively and join with each indoor electric expansion valve.
According to technique scheme, the upper and lower incoming interface and the upper and lower outgoing interface thereof of described heat storage tank module are equipped with stop valve.
The present invention is owing to adopt the said structure type of attachment, can make this system utilize night cheap electric power to freeze, heat, and hot and cold amount is stored in the phase-transition heat-storage medium.In the peak electricity consumption phase, draw in cold heat from heat storage medium.Reduce the condensation temperature of system in refrigeration, when getting cold mode operation, increase degree of supercooling.Evaporating temperature heating, improve during the heat-obtaining mode operation system reduces the compressor air suction specific volume, increases circulating mass of refrigerant.Reduce condensation temperature or improve the compression ratio that evaporating temperature all can reduce system, under refrigeration, heating operation pattern, all can reduce the operation energy consumption of system, improve the cooling and warming ability, realized " peak load shifting " of power system.Compare with prior art, not only simple in structure, assembly unit makes things convenient for, cost can descend significantly, and guarantee the repertoire of cold-storage and thermal storage type heat pump air conditioner.All will have a tremendous social and economic benefits to configuration capacity and the equal permanent electric load that reduces power system.Has the value of extensively promoting the use of.
Description of drawings
Fig. 1 is the heat-pump air-conditioner structure catenation principle figure of HIT " ice heat accumulating type PVC Le マ Le チ ェ ァ コ ソ ";
Fig. 2 is the heat-pump air-conditioner structure catenation principle figure of MIT " the hot マ Le チ ェ ァ コ ソ of ice storage ";
Fig. 3 is structure catenation principle figure of the present invention.
The specific embodiment
Fig. 1 and Fig. 2 have made brief description in above-mentioned background technology section, repeat no more.Referring to Fig. 3, cold-storage and thermal storage type heat pump air conditioner of the present invention, it is made up of off-premises station 1, heat storage tank module 13 and indoor units 10.Off-premises station 1 mainly comprises frequency-changeable compressor 4, cross valve 16, heat exchanger 2 and outdoor electric expansion valve 3.Heat storage tank module 13 comprises heat storage tank 14, first electric expansion valve 12, second electric expansion valve 15 and first magnetic valve 6, second magnetic valve 7, the 3rd magnetic valve 11, heat exchanger and phase-transition heat-storage medium are housed in heat storage tank 14, and indoor units 10 is to be made of a plurality of indoor heat converters 9 and the indoor electric expansion valve 8 that equates with its quantity.Its design feature is: compressor 4 blast pipes and cross valve 16 imports of described off-premises station 1 are joined, cross valve 16 outlet respectively with heat exchanger 2, compressor 4 air intake ducts and heat storage tank module 13 on incoming interface join, heat exchanger 2 other ends and outdoor electric expansion valve 3 join.Outdoor electric expansion valve 3 other ends and 13 times incoming interfaces of heat storage tank module join, on the described heat storage tank module 13 incoming interface and on it outgoing interface and the 3rd magnetic valve 11 be connected, the 3rd magnetic valve 11 other ends and second magnetic valve 7, first electric expansion valve 12 joins, first electric expansion valve, 12 other ends insert heat storage tank 14, heat storage tank 14 other ends and second electric expansion valve 15 join, 13 times incoming interfaces of second electric expansion valve, 15 other ends and heat storage tank module, first magnetic valve 6 joins, first magnetic valve, 6 other ends and second magnetic valve 7,13 times outgoing interfaces of heat storage tank module join, a plurality of indoor heat converters 9 of described indoor units 10 be connected in series with each indoor electric expansion valve 8 respectively the back in parallel with heat storage tank module 13 on, following outgoing interface joins.
Use the present invention that three kinds of operational modes are respectively arranged when cooling and warming.The refrigerating operaton pattern has: (1) refrigeration comprises and gets cold operation; (2) cold-storage operation fully; (3) part cold-storage operation.The heating operation pattern has: (4) heat, and comprise the heat-obtaining operation; (5) complete regenerative operation; (6) part regenerative operation.Narrated respectively according to six kinds of operational modes below.Do not piecing together the situation of changing heat storage tank module 13, each stop valve 5 is always standard-sized sheet.
(1) refrigerating operaton, air conditioner comprises when getting cold operation in refrigeration, second electric expansion valve 15, first electric expansion valve 12 and outdoor electric expansion valve 3 standard-sized sheets, first magnetic valve 6, the 3rd magnetic valve 11 are closed, and second magnetic valve 7 is opened.Compressor 4 flows into indoor units 10 with the low-pressure refrigerant vapor compression after blast pipe advances cross valve 16, outdoor heat converter 2, outdoor electric expansion valve 3, second electric expansion valve 15, heat storage tank 14, first electric expansion valve 12, second magnetic valve 7.Cold-producing medium is through indoor each indoor electric expansion valve 8 throttling step-down, and heat absorption flashes to low-pressure gas in indoor units 10 each heat exchanger 9, and compressed machine 4 air intake ducts flow back to compressor 4, finish kind of refrigeration cycle.Refrigeration, when getting cold operation, 14 series connection of outdoor heat exchanger 2 and heat storage tank are used as the condenser of refrigeration system.By day the peak electricity consumption phase, adopt the cold operation pattern of getting.At this moment, the cooling fan of outdoor heat converter 2 stops or low cruise, cold-producing medium obtains cooling and partial condensation in heat exchanger 2, enter heat storage tank 14 again, the phase transition temperature of heat storage medium is lower than outdoor environment temperature, the heat of absorption refrigeration agent is converted into liquid phase by solid phase gradually, and makes high-pressure gaseous refrigerant continue condensation and cold excessively.Its effect is: the condensation temperature of system is reduced significantly, reduced the compressor wasted work; 2. increase the degree of supercooling of high pressure liquid refrigerant, reduced the liquid refrigerant enthalpy, improved refrigerating capacity; 3. reduced the power of outdoor fan; 4. improved Energy Efficiency Ratio; 5. can enlarge cooling area.After heat storage medium all is converted into liquid phase by solid phase, the temperature of heat storage medium will rise gradually, and increase the rotation speed of the fan of outdoor heat converter 2 this moment, and air-conditioning system enters conventional refrigerating operaton pattern.When the temperature of heat storage medium still is lower than through the condensed liquid refrigeration temperature of heat exchanger 2, liquid refrigerant will obtain further cold excessively in heat storage tank 14, to reduce the enthalpy of liquid refrigerant, improve refrigerating capacity.
(2) cold-storage operation fully, when night, indoor set was all out of service, the indoor electric expansion valve 8 of all indoor sets is all closed, close first magnetic valve 6, second magnetic valve 7 this moment, open the 3rd magnetic valve 11, first electric expansion valve 12, outdoor electric expansion valve 3 standard-sized sheets, air conditioner enters complete cold-storage operational mode.When complete cold-storage operational mode, compressor 4 compresses low-pressure refrigerant vapor, advance cross valve 16 inflow heat exchangers 2 through blast pipe, refrigerant vapour is condensed into liquid in heat exchanger 2 after, by outdoor electric expansion valve 3 through the 15 throttling step-downs of second electric expansion valve, in heat storage tank 14, absorb the heat of heat storage medium and flash to low-pressure gas, behind the 3rd magnetic valve 11, flow back to compressor 4, finish kind of refrigeration cycle by first electric expansion valve 12.Heat storage medium in the heat storage tank 14 loses heat, and temperature reduces gradually, until condensing into solid state medium fully, cold is stored in the heat storage medium, uses for peak times of power consumption on daytime.
(3) part cold-storage operation, when having only the operation of part indoor set night, the indoor electric expansion valve 8 of withdraw from service indoor heat converter 9 is closed.The indoor heat converter 9 of working still freezes.Different is opens first magnetic valve 6 for this moment and complete cold-storage pattern.After the 15 throttling step-downs of second electric expansion valve, in heat storage tank 14, absorb the heat of heat storage medium and flash to low-pressure gas through outdoor heat converter 2 condensed liquid refrigerant parts, cold is stored in the heat storage medium.Another part enters indoor heat converter 9 heat absorption evaporations through first magnetic valve 6 and the indoor electric expansion valve 8 of indoor set of working, to indoor released cold quantity.The cold-producing medium that two parts are evaporated together flows back to compressor 4, finishes kind of refrigeration cycle.
(4) heating operation, air conditioner comprise heat-obtaining when operation heating, second electric expansion valve 15, outdoor electric expansion valve 3 standard-sized sheets, and first magnetic valve 6, the 3rd magnetic valve 11 are closed, and second magnetic valve 7 is opened.Compressor 4 compresses low-pressure refrigerant vapor, each heat exchanger 9 in cross valve 16 inlet chambers, and be condensed into liquid refrigerant at this, indoor each indoor electric expansion valve 8, second magnetic valve 7 of liquid refrigerant by opening, throttling step-down in first electric expansion valve 12, flow into heat storage tank 14, cold-producing medium is drawn the heat of heat storage medium and is flashed to low-pressure gas in heat storage tank 14, second electric expansion valve 15, outdoor electric expansion valve 3, cross valve 16 through standard-sized sheet flows back to compressor 4 again, finishes kind of refrigeration cycle.Heat, heat-obtaining when operation, outdoor heat exchanger 2 and heat storage tank 14 series connection are used as the evaporimeter of refrigeration system.By day the peak electricity consumption phase, adopt the heat-obtaining operational mode.At this moment, the cooling fan of outdoor heat converter 2 stops or low cruise, cold-producing medium is drawn the heat that is stored in night in the heat storage medium in heat storage tank 14, because the temperature of heat storage medium is higher than outdoor environment temperature, the evaporating temperature that makes system is with respect to the direct heat-obtaining and being improved from environment of no heat storage tank, reduce the inspiratory volume of compressor 4, improved the circular flow of cold-producing medium, improved heating capacity.With no heat storage tank directly from environment heat-obtaining compare, under identical heating capacity condition, reduced the power consumption of compressor 4.After the temperature of heat storage medium reduced, increased the rotation speed of the fan of outdoor heat converter 2 this moment, and air-conditioning system enters conventional heating operation pattern.Cold-producing medium is from outdoor heat converter 2 and heat storage tank 14 heat-obtaining and evaporating simultaneously, because heat exchange area increases, the evaporating temperature of air-conditioning system also will be improved.
(5) complete regenerative operation, when night, indoor set was all out of service, the indoor electric expansion valve 8 of all indoor sets is all closed, close first magnetic valve 6, second magnetic valve 7 this moment, open the 3rd magnetic valve 11, second electric expansion valve 15, first electric expansion valve, 12 standard-sized sheets, air-conditioning system enters complete regenerative operation pattern.When complete regenerative operation pattern, compressor 4 compresses low-pressure refrigerant vapor, enter in the heat storage tank 14 through the 3rd magnetic valve 11, heat is stored in the heat storage medium, heat use for peak times of power consumption on daytime, condensed liquid refrigerant flows back to compressor 4 after the heat absorption evaporation through outdoor electric expansion valve 3 throttling step-downs in outdoor heat converter 2 in heat storage tank 14, finishes heating circulation.
(6) part regenerative operation has only part indoor set when operation when night, and the indoor electric expansion valve 8 of withdraw from service indoor set is closed, and the indoor set of working still heats, and different is to open first magnetic valve 6 for this moment and complete accumulation of heat pattern.Condensed liquid refrigerant converges through first magnetic valve 6 with through heat storage tank 14 condensed liquid state in indoor heat converter 9, inlet chamber outer heat-exchanger 2 after outdoor electric expansion valve 3 throttling step-downs, the heat of vaporization of cold-producing medium absorbing environmental air in heat exchanger 2 is got back to compressor 4 then.
According to above-mentioned embodiment, the technical scheme as if the quantity of the heat exchanger 9 of indoor units 10 being replaced by one or more formation also all belongs to protection scope of the present invention.
Claims (2)
1. cold-storage and thermal storage type heat pump air conditioner, it is by off-premises station (1), heat storage tank module (13) and indoor units (10) are formed, off-premises station (1) mainly comprises frequency-changeable compressor (4), cross valve (16), heat exchanger (2) and outdoor electric expansion valve (3), heat storage tank module (13) comprises heat storage tank (14), first electric expansion valve (12), second electric expansion valve (15) and first magnetic valve (6), second magnetic valve (7), the 3rd magnetic valve (11), heat exchanger and phase-transition heat-storage medium are housed in heat storage tank (14), indoor units (10) is to be made of a plurality of indoor heat converters (9) and the electric expansion valve (8) that equates with its quantity, it is characterized in that: compressor (4) blast pipe of described off-premises station (1) and cross valve (16) import are joined, cross valve (16) outlet respectively with heat exchanger (2), compressor (4) air intake duct and heat storage tank module (13) go up incoming interface joins, heat exchanger (2) other end and outdoor electric expansion valve (3) join, outdoor electric expansion valve (3) other end and heat storage tank module (13) incoming interface are down joined, described heat storage tank module (13) go up incoming interface and on it outgoing interface and the 3rd magnetic valve (11) be connected, the 3rd magnetic valve (11) other end and second magnetic valve (7), first electric expansion valve (12) joins, first electric expansion valve (12) other end inserts heat storage tank (14), heat storage tank (14) other end and second electric expansion valve (15) join, second electric expansion valve (15) other end and heat storage tank module (13) be incoming interface down, first magnetic valve (6) joins, first magnetic valve (6) other end and second magnetic valve (7), heat storage tank module (13) down outgoing interface is joined, a plurality of indoor heat converters (9) of described indoor units (10) be connected in series with each indoor electric expansion valve (8) respectively in parallel the and heat storage tank module (13) in back on, following outgoing interface joins.
2. according to claim 1 or 2 described a kind of cold-storage and thermal storage type heat pump air conditioners, it is characterized in that: the upper and lower incoming interface of described heat storage tank module (13) and upper and lower outgoing interface thereof are equipped with stop valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109661A CN1128316C (en) | 1999-07-05 | 1999-07-05 | Cold and heat accumulation type air conditioner with heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109661A CN1128316C (en) | 1999-07-05 | 1999-07-05 | Cold and heat accumulation type air conditioner with heat pump |
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| CN1281128A CN1281128A (en) | 2001-01-24 |
| CN1128316C true CN1128316C (en) | 2003-11-19 |
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| CN99109661A Expired - Fee Related CN1128316C (en) | 1999-07-05 | 1999-07-05 | Cold and heat accumulation type air conditioner with heat pump |
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1999
- 1999-07-05 CN CN99109661A patent/CN1128316C/en not_active Expired - Fee Related
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| CN1281128A (en) | 2001-01-24 |
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