摘要:
According to the present invention, in a gas injection type heat pump apparatus, the high-pressure side pressure of refrigeration cycle (21) is detected in a heating operation, and an upper limit value (BP) of an amount of air passing through an inside heat exchanger (14) is determined based on the detection value. The upper limit value (BP) and a set air amount (BO) set by an air amount switching lever (51) are compared. When the set air amount (BO) is larger than the upper limit value, the amount of the air passing through the inside heat exchanger is restricted within the upper limit value. In this way, the high-pressure side pressure increases, and an intermediate pressure in a gas-liquid separator also increases. Therefore, the gas injection amount can be increased, and a heating capacity can be effectively improved.
摘要:
According to the present invention, in a heating operation where a heating indoor heat exchanger (12) function as a condenser and an outdoor heat exchanger (22) functions as an evaporator, an air amount supplied by a blower (4) is reduced when a predetermined amount of frost is or may be deposited on the outdoor heat exchanger (22) in an outside air introduction mode where an outside air is supplied into a passenger compartment. Accordingly, a heating load is reduced to thereby reduce an endothermic amount in the outdoor heat exchanger (22). As a result, a frost deposition speed is reduced, and a deposited frost limit is increased, thereby extending a heating operation period.
摘要:
L'invention concerne un dispositif de chauffage-climatisation de l'habitacle d'un véhicule automobile à moteur électrique. Le dispositif comprend une boucle principale (10) contenant un échangeur de chaleur intérieur (18) propre à échanger de la chaleur avec un flux d'air envoyé dans l'habitacle (H), un échangeur de chaleur extérieur (34) propre à échanger de la chaleur avec un flux d'air extérieur à l'habitacle (H) et un détendeur (32) interposé entre l'échangeur de chaleur intérieur et l'échangeur de chaleur extérieur; une boucle secondaire (12) contenant un compresseur (54) et un évaporateur (60) relié à un circuit de refroidissement (62) du circuit de puissance (64) associé au moteur électrique du véhicule, et une vanne de commutation (14) entre la boucle principale (10) et la boucle secondaire (12) pour faire circuler le fluide frigorigène dans la boucle principale (10) dans un sens de circulation choisi. Application aux véhicules automobiles à moteur électrique.
摘要:
An air conditioner for a vehicle includes a heat pump system for heating and cooling. The air conditioner includes a ventilation passage (14) for ventilating air from a passenger compartment (13) of the vehicle outside of the vehicle. An accelerating system is provided with the heat pump system for accelerating the evaporation of a refrigerant during air cooling or the condensation of a refrigerant during air heating by using involved energy recovered from air exhausted outside of said vehicle through the ventilation passage (14). Thereby, the air conditioner increases the heating and cooling ability and reduces the energy necessary for maintaining a constant temperature in the passenger compartment (13).
摘要:
L'invention concerne un système (1) de pompe à chaleur comprenant un circuit de fluide frigorigène principal (10) comprenant un échangeur de chaleur froid (110), un compresseur (120) placé en aval de l'échangeur de chaleur froid (110), dans le sens de chauffage (10A) du flux, et un échangeur de chaleur chaud (140) placé en aval du compresseur (120) et en amont du détendeur (150), ledit détendeur (150) placé en amont de l'échangeur de chaleur froid (110), dans le sens de chauffage (10A) du flux, le circuit de fluide frigorigène principal (10) comprend un réchauffeur (130) couplé à la sortie du compresseur (120), placé dans le flux de fluide frigorigène et configuré pour chauffer le fluide frigorigène haute pression sortant dudit compresseur (120).
摘要:
The present invention relates to an air conditioner in an electric vehicle, and more particularly to an air conditioner in an electric vehicle, which can make continuous heating operation even in defrosting operation, can enhance heating efficiency and performance even in the defrosting operation, and can recover heat discharged from various components of the electric vehicle even in the defrosting operation for preventing liquid refrigerant from being introduced to a compressor.
摘要:
In a vehicular air conditioner in which a cooling operation and a heating operation are switched by switching a four-way valve, a pressure accumulator is provided in which a coolant, which is related to a discharge pressure or an aspiration pressure of a compressor , is accumulated when the compressor is operated, and a differential pressure, which is required for switching the four-way valve, between piston rooms is maintained, and the differential pressure, which is required for switching the four-way valve, is generated between the piston rooms of the four-way valve even after the compressor is stopped.
摘要:
A heat pump device 20 includes an air conditioning control device 22 configured to switch the heat pump device 20 among a plurality of operation modes including an air-heating operation mode in which an indoor heat exchanger 32 serves as a radiator and an outdoor heat exchanger 33 serves as a heat absorber, and an air-cooling operation mode in which the indoor heat exchanger 32 serves as a heat absorber and the outdoor heat exchanger 33 serves as a radiator. The air conditioning control device 22 switch a refrigerant pipe such that refrigerant is, in the air-cooling operation mode, supplied to part of the outdoor heat exchanger 33 serving as a refrigerant inlet in the air-heating operation mode.