Vehicle air conditioner

Abstract

A vehicle air conditioner includes a thermoelectric conversion module, a first heat exchanger, a second heat exchanger, a first air-conditioning heat exchanger, a second air-conditioning heat exchanger, a radiator, a first circuit connecting the first heat exchanger and the first air-conditioning heat exchanger and a second circuit connecting the second heat exchanger, the second air-conditioning heat exchanger and the radiator. The second circuit includes a bypass passage that bypasses the second air-conditioning heat exchanger and a first switching device switching selectively between a first position where heat exchange medium flows through the bypass passage without allowing the heat exchange medium to flow through the second air-conditioning heat exchanger and a second position where the heat exchange medium flows through the second air-conditioning heat exchanger.

1 . A vehicle air conditioner comprising:
 a thermoelectric conversion module including a thermoelectric conversion element, wherein flowing direction of electric current applied to the thermoelectric conversion element can be controllably reversed, the thermoelectric conversion module further including a first surface and a second surface,   a first heat exchanger provided on the first surface side;   a second heat exchanger provided on the second surface side;   a first air-conditioning heat exchanger;   a second air-conditioning heat exchanger;   a radiator;   a first circuit connecting the first heat exchanger and the first air-conditioning heat exchanger; and   a second circuit connecting the second heat exchanger, the second air-conditioning heat exchanger and the radiator, wherein the first circuit including:
 a first passage extending from the first heat exchanger to the first air-conditioning heat exchanger; and 
 a second passage extending from the first air-conditioning heat exchanger to the first heat exchanger, wherein heat exchange medium flows through the second circuit, wherein the second circuit includes: 
 a third passage extending from the second heat exchanger to the second air-conditioning heat exchanger; 
 a fourth passage extending from the second air-conditioning heat exchanger to the radiator; 
 a fifth passage extending from the radiator to the second heat exchanger; 
 a bypass passage connecting the third passage and the fourth passage; and 
 a first switching device switching selectively between a first position where the heat exchange medium flows through the bypass passage that bypasses the second air-conditioning heat exchanger and a second position where the heat exchange medium flows through the second air-conditioning heat exchanger. 
   
     
     
         2 . The vehicle air conditioner according to  claim 1 , further comprising:
 a power source driving a vehicle and provided in the second circuit.   
     
     
         3 . The vehicle air conditioner according to  claim 2 , wherein the second circuit further including:
 a second switching device switching selectively between a third position where the heat exchange medium flows through the third passage, the fourth passage and the fifth passage in this order and a fourth position where the heat exchange medium flows through the fifth passage, the fourth passage and the third passage in this order.   
     
     
         4 . The vehicle air conditioner according to  claim 1 , wherein the thermoelectric conversion module, the first heat exchanger, the second heat exchanger and the radiator are disposed outside a compartment room of a vehicle, wherein the first air-conditioning heat exchanger and the second air-conditioning heat exchanger are disposed in the compartment room. 
     
     
         5 . The vehicle air conditioner according to  claim 1 , wherein the first switching device is a three-way valve and disposed at a connection between the bypass passage and the third passage or between the bypass passage and the fourth passage. 
     
     
         6 . The vehicle air conditioner according to  claim 3 , wherein the second switching device is an electric pump and disposed in the second circuit.