Summary of the invention
The above-mentioned defect existed in order to overcome the prior art field, the purpose of this utility model is, provide a kind of direct-expansion type double effect heat reclamation heat pump air-conditioning system, the energy of recyclable indoor exhaust wind, the part by indoor exhaust wind as off-premises station heat exchange air, improve off-premises station heat exchange air quality, improve unit performance, simultaneously, indoor set, off-premises station are arranged on integrated casing inside, be placed on indoor, the occasion that is applied to place off-premises station and cooling tower.
The direct-expansion type double effect heat reclamation heat pump air-conditioning system that the utility model provides, comprise compressor, cross valve, gas-liquid separator, check valve, expansion valve, reservoir, the heat pump that indoor finned heat exchanger and outside finned heat exchanger form, compressor, cross valve, gas-liquid separator, check valve, expansion valve, reservoir, the indoor finned heat exchanger is connected by refrigerant line with the outside finned heat exchanger, it also comprises supply air system and the exhaust system be communicated with heat pump, pressure fan, air heat exchange core body and indoor finned heat exchanger form supply air system, exhaust blower, air heat exchange core body and outside finned heat exchanger form exhaust system, described exhaust blower and pressure fan are to take out flow fan, or centrifugal blower or other air conveyance devices, described indoor finned heat exchanger and outside finned heat exchanger adopt straight swollen structure coil pipe, described indoor finned heat exchanger is one or one group of heat exchanger, and described outside finned heat exchanger is one or one group of heat exchanger.
The direct-expansion type double effect heat reclamation heat pump air-conditioning system that the utility model provides, its beneficial effect is, when air conditioner refrigerating (heating) mode operation, outdoor new wind and indoor exhaust wind are carried out a heat exchange in air heat exchange core body inside, reclaim the cold (heat) of indoor exhaust wind 65%-70%, reach energy-conservation purpose, improve unit performance; Indoor finned heat exchanger and outside finned heat exchanger are installed in internal body, not only can be used as condenser but also can be used as evaporimeter, are applicable to area or occasion that cooling tower, air-cooled off-premises station etc. can not be installed, and applicability is stronger, and comprehensive energy efficiency is than higher.
The specific embodiment
With reference to the accompanying drawings, in conjunction with two embodiment, the direct-expansion type double effect heat reclamation heat pump air-conditioning system that the utility model is provided is described in detail.
Embodiment mono-
See figures.1.and.2, the direct-expansion type double effect heat reclamation heat pump air-conditioning system of the present embodiment, comprise compressor 1, cross valve 2, gas-liquid separator 3, indoor finned heat exchanger 4, outside finned heat exchanger 5, check valve I-IV 6-9, the heat pump that reservoir 10 and expansion valve 11 form, be provided with gas-liquid separator 3 between described compressor 1 gas returning port and cross valve 2, described indoor finned heat exchanger 4 and outside finned heat exchanger 5 are communicated with compressor 1 gas outlet by cross valve 2 respectively, 5 of indoor finned heat exchanger 4 and outside finned heat exchangers pass through refrigeration, heating the exchange pipeline connects, described refrigeration, heat the exchange pipeline and comprise the branch road I be composed in series by check valve I 6 and check valve II 7, and the branch road II be composed in series by check valve III 8 and check valve IV 9, described branch road I is in parallel with the branch road II, described refrigeration, heat the exchange pipeline also comprise be serially connected between branch road I and branch road II check valve I 6 is in parallel with check valve III 8, reservoir 10 and expansion valve 11 that check valve II 7 is in parallel with check valve IV 9, it also comprises supply air system and the exhaust system be communicated with heat pump, exhaust blower 12, air heat exchange core body 13 form exhaust system with outside finned heat exchanger 5, and pressure fan 14, air heat exchange core body 13 form supply air system with indoor finned heat exchanger 4, described exhaust blower 12 and pressure fan 14 are to take out flow fan, or centrifugal blower or other air conveyance devices, described indoor finned heat exchanger 4 and outside finned heat exchanger 5 adopt straight swollen structure coil pipe, described indoor finned heat exchanger 4 is one or one group of heat exchanger, and described outside finned heat exchanger 5 is one or one group of heat exchanger.
See figures.1.and.2, Fig. 1 direction of arrow is wind direction, Fig. 2 direction of arrow is refrigerant flow direction, when direct-expansion type double effect heat reclamation heat pump air-conditioning system refrigerating operaton, start compressor 1, exhaust blower 12 and pressure fan 14, cold-producing medium is from compressor 1 is discharged, through cross valve 2 enter outside finned heat exchanger 5(now outside finned heat exchanger 5 as condenser) be condensed into liquid, the refrigeration of flowing through again, heat the exchange pipeline enter indoor finned heat exchanger 4(now indoor finned heat exchanger 4 as evaporimeter) evaporation endothermic, refrigeration, enter gas-liquid separator 3 separation through cross valve 2 after becoming liquid-vapor mixture, enter again compressor 1.
Now, indoor temperature is well below outdoor temperature, indoor exhaust wind 15 is carried to outdoor air draft 16 through exhaust blower 12, outdoor new wind 17 is carried to system air-supply 18 through pressure fan 14, through air heat exchange core body 13, indoor exhaust wind 15 is carried out a heat exchange with outdoor new wind 17, recovery indoor exhaust wind 15(65-70) cold of %, indoor exhaust wind 15 is after 13 heat exchanges of air heat exchange core body, temperature rises, but indoor exhaust wind 15 temperature are also lower than outdoor temperature after a heat exchange, by indoor exhaust wind 15 be delivered to outside finned heat exchanger 5 again absorb heat after heating up drain into outdoor.Because of indoor exhaust wind 15 temperature after a heat exchange, also lower than outdoor air draft 16 temperature, so that condensation temperature is now carried out heat exchange than direct utilization outdoor air is low, the refrigeration system Energy Efficiency Ratio will be higher than directly using outdoor air carry out heat exchange.
Meanwhile, outdoor new wind 17 is after 13 heat exchanges of air heat exchange core body, temperature descends, but outdoor new wind 17 temperature can not meet the room temperature lowering requirement after a heat exchange, send into indoor functional areas after outdoor new wind 17 is delivered to the 4 heat release coolings of indoor finned heat exchanger, reach the refrigeration purpose.Because reclaim indoor exhaust wind 15(65-70 after a heat exchange) cold of %, outdoor new wind 17 temperature descend, and have reached energy-conservation purpose.
Embodiment bis-
With reference to Fig. 1 and Fig. 3, the direct-expansion type double effect heat reclamation heat pump air-conditioning system of the present embodiment, comprise compressor 1, cross valve 2, gas-liquid separator 3, indoor finned heat exchanger 4, outside finned heat exchanger 5, check valve I-IV 6-9, the heat pump that reservoir 10 and expansion valve 11 form, be provided with gas-liquid separator 3 between described compressor 1 gas returning port and cross valve 2, described indoor finned heat exchanger 4 and outside finned heat exchanger 5 are communicated with compressor 1 gas outlet by cross valve 2 respectively, 5 of indoor finned heat exchanger 4 and outside finned heat exchangers pass through refrigeration, heating the exchange pipeline connects, described refrigeration, heat the exchange pipeline and comprise the branch road I be composed in series by check valve I 6 and check valve II 7, and the branch road II be composed in series by check valve III 8 and check valve IV 9, described branch road I is in parallel with the branch road II, described refrigeration, heat the exchange pipeline also comprise be serially connected between branch road I and branch road II check valve I 6 is in parallel with check valve III 8, reservoir 10 and expansion valve 11 that check valve II 7 is in parallel with check valve IV 9, it also comprises supply air system and the exhaust system be communicated with heat pump, exhaust blower 12, air heat exchange core body 13 form exhaust system with outside finned heat exchanger 5, and pressure fan 14, air heat exchange core body 13 form supply air system with indoor finned heat exchanger 4, described exhaust blower 12 and pressure fan 14 are to take out flow fan, or centrifugal blower or other air conveyance devices, described indoor finned heat exchanger 4 and outside finned heat exchanger 5 adopt straight swollen structure coil pipe, described indoor finned heat exchanger 4 is one or one group of heat exchanger, and described outside finned heat exchanger 5 is one or one group of heat exchanger.
With reference to Fig. 1 and Fig. 3, Fig. 1 direction of arrow is wind direction, Fig. 2 direction of arrow is refrigerant flow direction, when direct-expansion type double effect heat reclamation heat pump air-conditioning system heating operation, start compressor 1, exhaust blower 12 and pressure fan 14, cold-producing medium is from compressor 1 is discharged, through cross valve 2 enter indoor finned heat exchanger 4(now indoor finned heat exchanger 4 as condenser) be condensed into liquid after, the refrigeration of flowing through again, heat the exchange pipeline enter outside finned heat exchanger 5(now outside finned heat exchanger 5 as evaporimeter) evaporation endothermic, enter gas-liquid separator 3 separation by cross valve 2 after becoming gas, enter again compressor 1.
Now, indoor temperature is far away higher than outdoor temperature, indoor exhaust wind 15 is carried to outdoor air draft 16 through exhaust blower 12, outdoor new wind 17 is carried to system air-supply 18 through pressure fan 14, through air heat exchange core body 13, indoor exhaust wind 15 is carried out a heat exchange with outdoor new wind 17, recovery indoor exhaust wind 15(65-70) heat of %, indoor exhaust wind 15 is after 13 heat exchanges of air heat exchange core body, temperature descends, but indoor exhaust wind 15 temperature are also higher than outdoor temperature after a heat exchange, indoor exhaust wind 15 is delivered to outside finned heat exchanger 5 to be drained into after heat release cooling outdoor again.Because of indoor exhaust wind 15 temperature after a heat exchange also higher than outdoor air draft 16 temperature, so it is high that evaporating temperature is now carried out heat exchange than direct utilization outdoor air, improve evaporating temperature, the heating Energy Efficiency Ratio will be higher than directly using outdoor air carry out heat exchange and be difficult for frosting.
Meanwhile, outdoor new wind 17 is after 13 heat exchanges of air heat exchange core body, temperature rises, but outdoor new wind 17 temperature can not meet the heating of house requirement after a heat exchange, outdoor new wind 17 is delivered to after finned heat exchanger 4 heat absorptions in indoor heat up and sends into indoor functional areas, reach and heat purpose.Because reclaim indoor exhaust wind 15(65-70 after a heat exchange) heat of %, outdoor new wind 17 temperature rise, and have reached energy-conservation purpose.