초록 ▼

The present invention provides an air-condition heat pump system and two-stage defrosting control method for continuous operation under an environment temperature range from 20 degree to negative 40 degree Celsius or lower. The heat pump system employs different defrosting methods under different te

The present invention provides an air-condition heat pump system and two-stage defrosting control method for continuous operation under an environment temperature range from 20 degree to negative 40 degree Celsius or lower. The heat pump system employs different defrosting methods under different temperature and humidity conditions. A ventilation and humidity control system is also provided for implementing the cross defrosting heat pump system within an indoor dimension.

대표청구항 ▼

The invention claimed is: 1. A multi-range cross-reverse air-conditioning system comprising: a) a main refrigeration circuit for the air-conditioning, said main refrigeration circuit consisting a main compressor for pressurizing refrigerant, a main condenser for condensing refrigerant and releasing

The invention claimed is: 1. A multi-range cross-reverse air-conditioning system comprising: a) a main refrigeration circuit for the air-conditioning, said main refrigeration circuit consisting a main compressor for pressurizing refrigerant, a main condenser for condensing refrigerant and releasing heat, at least two evaporators for evaporating refrigerant and absorbing heat energy, a main expansion valve for regulating the refrigerant pressure difference between said main condenser and said two evaporators; b) each of said two evaporators including flow control means for disabling the evaporation process individually by blocking the refrigerant passage from said main expansion valve; c) each of said two evaporators including flow control means for providing a refrigerant passage from said main compressor to said two evaporators individually; d) each of said two evaporators including a heat insulated space, and said heat insulated space including individual outdoor-air-intake means and indoor-air-intake means; e) a control system for selecting defrosting methods and controlling all said flow control means and outdoor-air-intake means and indoor-air-intake means; f) during the full capacity heating operation, all said evaporators will operate with the evaporation process by receiving the refrigerant-flow from said main expansion valve, while all refrigerant passages from said main compressor to each evaporator will be blocked to disable the refrigerant-flow associated with the high speed cross-reverse defrosting process, a controlled flow of outdoor air is admitted into the heat insulated space of each evaporator by its associated outdoor-air-intake means, meanwhile all said indoor-air-intake means are disabled to block the air passage between the indoor space and the heat insulated space of each evaporator; g) said multi-range cross-reverse air-conditioning system is capable of defrosting each evaporator by a defrost-cycle of the high speed cross-reverse defrosting process, wherein each of said evaporator will alternately operate with the high speed cross-reverse defrosting process and the refrigerant evaporation process; h) during the high speed cross-reverse defrosting process of each evaporator, said outdoor-air-intake means will stop inhaling outdoor air into the heat insulated space of the evaporator that is defrosting, a controlled flow of indoor air will be transferred into the heat insulated space of the evaporator that is defrosting, and at the same time a controlled amount of the pressurized refrigerant will be distributed into the evaporator that is defrosting, the accumulated frost on said evaporator will be melted by the heat generated from the condensation process therein and the heat energy of the indoor air, therefore the indoor air will be ventilated during this process, the other evaporator will continue the evaporation process with a flow of outdoor air, the main compressor and the main condenser will continue their operation to generate the heat energy for the air-conditioning; i) during the high speed cross-reverse defrosting process of each evaporator, the evaporator that is defrosting with the high speed cross-reverse defrosting process will receive a flow of pressurized refrigerant from said main compressor, and said flow of pressurized refrigerant will condense in said defrosting evaporator and exit via its associated pressure regulating means into the other evaporator that is operating with the evaporation process. 2. A multi-range cross-reverse air-conditioning system as defined in claim 1, which further comprises additional evaporators; wherein each of said additional evaporators includes individual flow control means for initiating the high speed cross-reverse defrosting process; during the defrost-cycle of the high speed cross-reverse defrosting process, the evaporator that is defrosting will receive a portion of the pressurized refrigerant from the main compressor, said evaporator will defrost with the heat energy of the indoor-air-flow and the condensation process therein, meanwhile the other evaporators will continue the evaporation process with a flow of outdoor air, the main compressor and the main condenser will continue their operation to generate the heat energy for the air-conditioning. 3. A multi-range cross-reverse air-conditioning system as defined in claim 1, wherein; each evaporator can further comprise sensor means for detecting the progress of the high speed cross-reverse defrosting process; and said control system can adjust the defrost-cycle accordingly for optimum heating efficiency. 4. A multi-range cross-reverse air-conditioning system as defined in claim 1; said control system can further comprise a forced-ventilation mode, wherein a controlled flow of the outdoor-air and a controlled flow of the indoor-air are admitted into the heat insulated space of the evaporators that are operating with the evaporation process, therefore the indoor air will be drawn out of the indoor space for the ventilation purpose, while the heat insulated space of each evaporator will have an air flow of higher temperature, thus ventilating the indoor air with a high energy recovery rate. 5. A multi-range defrost-condenser type air-conditioning system comprising: a) a main refrigeration circuit for the air-conditioning, said main refrigeration circuit consisting a main compressor for pressurizing refrigerant, a main condenser for condensing refrigerant and releasing heat, at least two evaporators for evaporating refrigerant and absorbing heat energy, a main expansion valve for regulating the refrigerant pressure difference between said main condenser and said two evaporators; b) each of said two evaporators including flow control means for disabling the evaporation process individually by blocking the refrigerant passage from said main expansion valve; c) each of said two evaporators including a defrost-condenser for transferring the heat energy during the high speed cross defrosting process; each defrost-condenser includes flow control means to receive a flow of pressurized refrigerant from the main compressor during the high speed cross defrosting process of its associated evaporator; d) each of said two evaporators including a heat insulated space, and said heat insulated space including individual outdoor-air-intake means and indoor-air-intake means; e) a control system for selecting defrosting methods and controlling all said flow control means and outdoor-air-intake means and indoor-air-intake means; f) said multi-range defrost-condenser type air-conditioning system is capable of defrosting each evaporator by a defrost-cycle of the high speed cross-defrosting process, wherein each of said evaporator will alternately operate with the high speed cross defrosting process and the refrigerant evaporation process; g) during the high speed cross defrosting process of each evaporator, said outdoor-air-intake means will stop inhaling outdoor air into the heat insulated space of the evaporator that is defrosting, a controlled flow of indoor air will be transferred into the heat insulated space of the evaporator that is defrosting, a controlled flow of the pressurized refrigerant from the main compressor will be distributed to the defrost condenser associated with the evaporator that is defrosting, the accumulated frost on said evaporator will melt by the heat generated from the condensation process therein and the heat energy of the indoor air, meanwhile the other evaporator will continue the evaporation process with a flow of outdoor air provided by said outdoor-air-intake means, the main compressor and the main condenser will continue their operation to generate the heat energy for the air-conditioning. 6. A multi-range defrost-condenser type air-conditioning system as defined in claim 5, which further comprises additional evaporators; wherein each of said additional evaporators includes individual flow control means and a defrost-condenser for initiating the high speed cross defrosting process; during the defrost-cycle of the high speed cross-defrosting process, the defrost-condenser associated with the evaporator that is defrosting will receive a portion of the pressurized refrigerant from the main compressor, said evaporator will defrost with the heat energy of the indoor-air-flow and the condensation process of its associated defrost-condenser, meanwhile the other evaporators will continue the evaporation process with a flow of outdoor air, the main compressor and the main condenser will continue their operation to generate the heat energy for the air-conditioning. 7. A multi-range defrost-condenser type air-conditioning system as defined in claim 5, wherein; each defrost-condenser has pressure regulating means and a refrigerant passage to another evaporator; during the high speed cross defrosting process, the defrost-condenser associated with the defrosting evaporator will transfer the refrigerant therein to another evaporator through said pressure regulating means and said refrigerant passage. 8. A multi-range defrost-condenser type air-conditioning system as defined in claim 5, wherein; each defrost-condenser and evaporator can further comprise individual sensor means for detecting the progress of the defrosting process; and said control system can adjust the defrost-cycle accordingly for optimum heating efficiency. 9. A multi-range cross-reverse air-conditioning system comprising: a) a refrigeration circuit comprising of four sections, which are a refrigerant-compressing section, a refrigerant-condensing section, a refrigerant-evaporating section, and a cross-reverse section; said refrigerant-compressing section provides a flow of pressurized-refrigerant to said refrigerant-condensing section and said cross-reverse section; said refrigerant-condensing section will condense said flow of pressurized-refrigerant therein, and release the heat energy for air-conditioning; said refrigerant-condensing section will provide a flow of refrigerant to said refrigerant-evaporating section; said refrigerant-evaporating section absorbs heat from the outdoor environment and evaporates said flow of refrigerant therein, and then produces a flow of evaporated-refrigerant into said refrigerant-compressing section; b) said refrigerant-compressing section comprises at least one compressor (101); c) said refrigerant-condensing section comprises at least one main condenser (102); d) said refrigerant-evaporating section comprises at least two evaporator units, which are first-evaporator (121) and second-evaporator (122); each of said evaporator units has an individual heat insulated space and outdoor-air-intake means and indoor-air-intake means; e) flow control means for independently controlling the refrigerant passage from said refrigerant-condensing section to said first-evaporator (121); f) flow control means for independently controlling the refrigerant passage from said refrigerant-condensing section to said second-evaporator (122); g) said cross-reverse section comprises a controlled refrigerant passage to each of said evaporator in said refrigerant-evaporating section; a first reverse-flow valve (151) for distributing a flow of pressurized refrigerant to said first evaporator (121) during the high speed cross-reverse defrosting process of said first evaporator (121); a second reverse-flow valve (152) for distributing a flow of pressurized refrigerant to said second evaporator (122) during the high speed cross-reverse defrosting process of said second evaporator (122); i) a control system for commencing a defrost-cycle of the high speed cross-reverse defrosting process by controlling said flow control means and outdoor-air-intake means and indoor-air-intake means; j) said multi-range cross-reverse air-conditioning system is capable of defrosting each evaporator by a defrost-cycle of the high speed cross-reverse defrosting process, wherein each of said evaporator will alternately operate with the high speed cross-reverse defrosting process and the refrigerant evaporation process. 10. A multi-range cross-reverse air-conditioning system as defined in claim 9, wherein; during the full capacity heating operation, all said evaporators will operate with the evaporation process; said cross-reverse section will be disabled by shutting said first reverse-flow valve (151) and said second reverse-flow valve (152); a controlled flow of outdoor air is admitted into the heat insulated space of said first evaporator (121) and the heat insulated space of said second evaporator (122) by their associated outdoor-air-intake means; all said indoor-air-intake means will block the air passage between the indoor space and the heat insulated space of each evaporator. 11. A multi-range cross-reverse air-conditioning system as defined in claim 9, wherein; during the high speed cross-reverse defrosting process of said first evaporator (121), the refrigerant passage of said first evaporator (121) will be isolated from said refrigerant-evaporating section by its associated flow control means, and first reverse-flow valve (151) will open to provide a flow of pressurized refrigerant into said first evaporator (121), and said heat insulated space of first evaporator (121) will be filled with the indoor air by its associated indoor-air-intake means, therefore, the accumulated frost on said first evaporator (121) will melt by the heat energy of the indoor air and the condensation process therein, meanwhile said second evaporator (122) will operate with the evaporation process by absorbing the heat of the outdoor-air-flow, said main compressor (101) and said main condenser (102) will continue operation for the air-conditioning. 12. A multi-range cross-reverse air-conditioning system as defined in claim 9, wherein; during the high speed cross-reverse defrosting process of said second evaporator (122), the refrigerant passage of said second evaporator (122) will be isolated from said refrigerant-evaporating section by its associated flow control means, and said second reverse-flow valve (152) will open to provide a flow of pressurized refrigerant into said second evaporator (122), and said heat insulated space of second evaporator (122) will be filled with the indoor air by its associated indoor-air-intake means, therefore, the accumulated frost on said second evaporator (122) will melt by the heat energy of the indoor air and the condensation process therein, meanwhile said first evaporator (121) will operate with the evaporation process by absorbing the heat of the outdoor-air-flow, said main compressor (101) and said main condenser (102) will continue operation for the air-conditioning. 13. A multi-range cross-reverse air-conditioning system as defined in claim 9, which can further comprise additional evaporators; wherein each of said additional evaporators includes individual flow control means and reverse-flow valve and indoor-air-intake means and outdoor-air-intake means for initiating the high speed cross-reverse defrosting process. 14. A multi-range defrost-condenser type air-conditioning system comprising: a) a refrigeration circuit comprising of four sections, which are a refrigerant-compressing section, a refrigerant-condensing section, a refrigerant-evaporating section, and a cross-defrosting section; said refrigerant-compressing section provides a flow of pressurized-refrigerant to said refrigerant-condensing section and said cross-defrosting section; said refrigerant-condensing section will condense said flow of pressurized-refrigerant therein, and release the heat energy for air-conditioning; said refrigerant-condensing section provides a flow of refrigerant to said refrigerant-evaporating section; said refrigerant-evaporating section absorbs heat from the outdoor environment and evaporates said flow of refrigerant therein, and then produces a flow of evaporated-refrigerant into said refrigerant-compressing section; b) said refrigerant-compressing section comprises at least one compressor (201); c) said refrigerant-condensing section comprises at least one main condenser (202); d) said refrigerant-evaporating section comprises at least two evaporator units, which are first-evaporator (221) and second-evaporator (222); each of said evaporator units has individual heat insulation and outdoor-air-intake means and indoor-air-intake means; e) flow control means for independently controlling the refrigerant passage from said refrigerant-condensing section to said first-evaporator (221); f) flow control means for independently controlling the refrigerant passage from said refrigerant-condensing section to said second-evaporator (222); g) said cross-defrosting section comprises one defrost-condenser for each evaporator of said refrigerant-evaporating section; a first defrost-condenser (223) for complementing with said first-evaporator, a second defrost-condenser (224) for complementing with said second-evaporator (222); h) a first defrost-flow valve (251) for controlling the flow rate of pressurized-refrigerant from said refrigerant-compressing section into said first defrost-condenser (223); i) a second defrost-flow valve (252) for controlling the flow rate of pressurized-refrigerant from said refrigerant-compressing section into said second defrost-condenser (224); j) a control system for commencing a defrost-cycle of the high speed cross-defrosting process by controlling said flow control means and outdoor-air-intake means and indoor-air-intake means; k) said multi-range defrost-condenser type air-conditioning system is capable of defrosting each evaporator by a defrost-cycle of the high speed cross-defrosting process, wherein each of said evaporator will alternately operate with the high speed cross-defrosting process and the refrigerant evaporation process. 15. A multi-range defrost condenser type air-conditioning system as defined in claim 14, wherein; during the full capacity heating operation, all said evaporators will operate with the evaporation process; said cross-defrosting section will be disabled by shutting said first defrost-flow valve (251) and said second defrost-flow valve (252); a controlled flow of outdoor air is admitted into the heat insulated space of said first evaporator (221) and the heat insulated space of said second evaporator (222); all said indoor-air-intake means will block the air passages between the indoor space and the heat insulated space of each evaporator. 16. A multi-range defrost condenser type air-conditioning system as defined in claim 14, wherein; during the high speed cross-defrosting process of said first evaporator (221), said first evaporator (221) will stop the evaporation process therein by blocking the refrigerant passage from said main expansion valve (203); said first defrost-condenser (223) will initiate a flow of pressurized refrigerant with said first defrost-flow valve (251); said heat insulated space of first evaporator (221) will be filled with the indoor air by its associated indoor-air-intake means, therefore, the accumulated frost on said first evaporator (221) will melt by the heat energy of the indoor air and the heat energy conducted from said first defrost-condenser (223); meanwhile said second evaporator (222) will operate with the evaporation process by absorbing the heat of the outdoor-air-flow, said main compressor (201) and said main condenser (202) will continue operation for the air-conditioning. 17. A multi-range defrost condenser type air-conditioning system as defined in claim 14, wherein; during the high speed cross-defrosting process of said second evaporator (222), said second evaporator (222) will stop the evaporation process therein by blocking the refrigerant passage from said main expansion valve (203); said second defrost-condenser (224) will initiate a flow of pressurized refrigerant with said second defrost-flow valve (251); said heat insulated space of second evaporator (222) will be filled with the indoor air by its associated indoor-air-intake means, therefore, the accumulated frost on said second evaporator (222) will melt by the heat energy of the indoor air and the heat energy conducted from said second defrost-condenser (224); meanwhile said first evaporator (221) will operate with the evaporation process by absorbing the heat of the outdoor-air-flow, said main compressor (201) and said main condenser (202) will continue operation for the air-conditioning. 18. A multi-range defrost condenser type air-conditioning system as defined in claim 14, which can further comprises additional evaporators; wherein each of said additional evaporators includes individual flow control means and defrost-flow valve and indoor-air-intake means and outdoor-air-intake means for initiating the high speed cross-defrosting process. 19. A multi-range defrost condenser type air-conditioning system as defined in claim 14, wherein; said control system can employ a combination of the high speed cross-defrosting process and the cross-air defrosting process to maximize the heating efficiency of the air-conditioning. 20. A multi-range cross-reverse air-conditioning system as defined in claim 9, wherein; said control system can employ a combination of the high speed cross-reverse defrosting process and the cross-air defrosting process to maximize the heating efficiency of the air-conditioning.