Air refrigerant type freezing and heating apparatus

Abstract

An object is to provide an apparatus which performs freezing and heating with a high efficiency. A compressor generates an air refrigerant with a high temperature and a high pressure by compressing the air refrigerant. As the air refrigerant is heated by a first heat exchanger and further heated by a heater, the temperature of the air refrigerant is increased to more than 200° C. in which bread and cookies can be baked, and the air refrigerant is supplied to an oven. Heat of the air refrigerant outputted from the oven is recovered by a second heat exchanger, and supplied to a high-temperature side of the first heat exchanger. The air outputted from the second heat exchanger is cooled by a cooler and a third heat exchanger, is adiabatically expanded by an expansion turbine to be cooled to −85° C., and is supplied to a freezer. The air of the freezer is recovered to be supplied to the low-temperature side of the third heat exchanger, and then is supplied to the compressor.

1 . An air refrigerant type freezing and heating apparatus comprising: 
 a compressing mechanism which compresses an air refrigerant;    a heating unit which heats a first object by said air refrigerant outputted from said compressing mechanism;    a heat exchanger which cools said air refrigerant outputted from said heating unit;    a turbine which expands said air refrigerant outputted from said heat exchanger; and    a cooler which cools a second object different from said first object by said air refrigerant outputted from said turbine.    
   
   
       2 . The air refrigerant type freezing and heating apparatus according to  claim 1 , wherein said compressing mechanism is composed of a single compressor.  
   
   
       3 . The air refrigerant type freezing and heating apparatus according to  claim 1 , further comprising: 
 a heat recovery unit which recovers heat of said air refrigerant outputted from said heating unit and heats said air refrigerant flowing between said compressing mechanism and said heating unit.    
   
   
       4 . The air refrigerant type freezing and heating apparatus according to  claim 3 , further comprising: 
 a second heating unit which heats an object by said air refrigerant flowing on a subsequent stage side of said heat recovery unit and on a prior stage side of the heat exchanger.    
   
   
       5 . The air refrigerant type freezing and heating apparatus according to  claim 1 , further comprising: 
 a heater which heats said air refrigerant flowing in said heating unit.    
   
   
       6 . The air refrigerant type freezing and heating apparatus according to  claim 1 , wherein said heater is an oven.  
   
   
       7 . An air refrigerant type cooling and heating system comprising: 
 an air refrigerant type freezing and heating apparatus according to  claim 1 , which includes:    a compressing mechanism which compresses an air refrigerant;    a heating unit which heats a first object by said air refrigerant outputted from said compressing mechanism;    a heat exchanger which cools said air refrigerant outputted from said heating unit;    a turbine which expands said air refrigerant outputted from said heat exchanger; and    a cooler which cools a second object different from said first object by said air refrigerant outputted from said turbine;    a regenerator which is filled with an absorbent absorbing a refrigerant different from the air refrigerant, heats and evaporates said refrigerant mixed in said absorbent by using said air refrigerant outputted from said compressing mechanism;    a condenser which condenses said refrigerant evaporated by said regenerator;    an evaporator which evaporates said refrigerant condensed by said condenser and cools a third object by heat of evaporation; and    an absorber which allows said absorbent outputted from said regenerator to absorb said refrigerant evaporated by said evaporator and outputs said absorbent to said regenerator.    
   
   
       8 . The air refrigerant type freezing and heating apparatus according to  claim 1 , wherein the compressing mechanism is a compressor which rotates coaxially with said turbine, 
 said air refrigerant taken in from said cooler is supplied to a low-temperature side flow passage of said heat exchanger, and    said air refrigerant outputted from said low-temperature side flow passage is directly supplied to said compressor.    
   
   
       9 . The air refrigerant type cooling and heating system according to  claim 7 , wherein said compressing mechanism is composed of a single compressor.  
   
   
       10 . The air refrigerant type cooling and heating system according to  claim 7 , wherein said air refrigerant type freezing and heating apparatus further includes: 
 a heat recovery unit which recovers heat of said air refrigerant outputted from said heating unit and heats said air refrigerant flowing between said compressing mechanism and said heating unit.    
   
   
       11 . The air refrigerant type cooling and heating system according to  claim 10 , wherein said air refrigerant type freezing and heating apparatus further includes: 
 a second heating unit which heats an object by said air refrigerant flowing on a subsequent stage side of said heat recovery unit and on a prior stage side of the heat exchanger.    
   
   
       12 . The air refrigerant type cooling and heating system according to  claim 7 , wherein said air refrigerant type freezing and heating apparatus further includes: 
 a heater which heats said air refrigerant flowing in said heating unit.    
   
   
       13 . The air refrigerant type cooling and heating system according to  claim 7 , wherein said heater is an oven.