Heat pump air-conditioning system for electric or hybrid vehicle
A technology for hybrid electric vehicles and heat pump air conditioners, which is applied in the field of heat pump air conditioner systems and air conditioning devices, and can solve the problems of large heating efficiency conversion loss, impact on vehicle cruising range, and large energy consumption
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[0018] The present invention will be described in further detail below through specific examples.
[0019] Such as figure 1 As shown, a heat pump air-conditioning system for an electric or hybrid vehicle includes a compressor 1 with supplementary air to increase enthalpy, a four-way valve 3, an external heat exchanger 4, a two-way thermal expansion valve 5, an intermediate heat exchanger 6, Expansion valve 7, cut-off valve 8, in-vehicle heat exchanger 10, return air pipeline 11, air supply pipeline and blower 14, the four-way valve 3 is provided with an air inlet 3a, an air return port 3d, a cooling flow port 3b, Heating flow port 3c, the intermediate heat exchanger 6 is provided with a first heat exchange medium passage and a second heat exchange medium passage, the exhaust port 1a of the compressor 1 communicates with the intake port 3a of the four-way valve 3 , the air return port 3d of the four-way valve 3 is connected to the air suction port 1b of the compressor 1 throug...
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