Air Conditioning System For a Motor Vehicle

Abstract

An air conditioning system for a motor vehicle having a coolant circuit ( 1 ) that contains an electrically driven compressor ( 2 ), a condenser ( 4 ), an expansion valve ( 10 ) and a latent cold accumulator ( 12 ). Heat is removed from the latent cold accumulator ( 12 ) by the cooling circuit ( 1 ); this is referred to as the charging of the latent cold accumulator ( 12 ). The system is also equipped with an arrangement for cooling air, which are configured in such a way that heat is removed from the air and supplied to the latent cold accumulator ( 12 ). Thus, a cost-effective, efficient air conditioning system can be used, in particular, when the vehicle is stationary.

1 . An air conditioning system for a vehicle having a refrigerant circuit (l) which comprises an electrically driven compressor ( 2 ), a condenser ( 4 ), an expansion valve ( 10 ) and a latent cold storage ( 12 ) from which heat is drawn by means of the refrigerant circuit ( 1 ), and having means for cooling air which is formed such that heat is drawn from the air and the heat is supplied to the latent cold storage ( 12 ). 
   
   
       2 . The air conditioning system according to  claim 1 , wherein the means for cooling air comprises a refrigerant circuit ( 30 ) which comprises a pump ( 34 ), the latent cold storage ( 12 ) and a heat exchanger ( 32 ) by means of which heat is drawn from the air which is then supplied to the latent cold storage ( 12 ). 
   
   
       3 . The air conditioning system according to  claim 2 , wherein a blower ( 32 ) is assigned to the heat exchanger ( 32 ) which influences an air flow through the heat exchanger ( 32 ) and simultaneously influences the air flow through a heating element. 
   
   
       4 . The air conditioning system according to  claim 3 , wherein the heating element is a heating heat exchanger ( 44 ), wherein a fluid flows through the latter which can be heated by means of a fuel heating device ( 46 ). 
   
   
       5 . The air conditioning system according to  claim 1 , wherein the latent cold storage ( 12 ) is disposed such that the air to be cooled flows through the latent cold storage ( 12 ) and, in this way, is cooled. 
   
   
       6 . The air conditioning system according to  claim 5 , wherein the refrigerant circuit ( 1 ) comprises a plurality of latent cold storages ( 12 ). 
   
   
       7 . The air conditioning system according to any of the preceding claims, wherein a generator ( 24 ) is assigned thereto which is driven by a driving shaft ( 26 ) of a drive ( 28 ) of the vehicle and, thus, provides the electrical energy for driving the electrical driven compressor ( 2 ).