Patent ID: 7669647

Claim:
An air conditioning system for cooling or heating an air, and for feeding the heated or cooled air to predetermined portions, comprising: a first circulating circuit circulating a first heating medium; a second circulating circuit circulating a second heating medium; a first heat exchanger executing heat exchange between the first and second heating media; a second heat exchanger for executing heat exchange between the second heating medium and the heated or cooled air; a compressor pressurizing the first heating medium; an expander distributing the pressurized first heating medium, connected with the first heat exchanger; a first heat storing device having a storing material which is heated or cooled by the first heating medium, executing heat exchange among the first heating medium, the second heating medium, and the heat storing material; a three-way valve arranged in the second circulating circuit and connected with the first heat exchanger, the first heat storing device, and the second heat exchanger; a controller connected with the three-way valve and executing a switching operation of the three-way valve on the basis of an air conditioning demand, the controller comprising a microcomputer having a central processing unit, a memory unit, an input, and an output; and a pump pressurizing and flowing the second heating medium; wherein the controller comprises a means for controlling an output of the pump on the basis of a deviation between the air temperature and a target temperature at a predetermined position in the outlet side of the second heat exchanger; wherein the second circulating circuit comprises a first sub-circuit flowing the second heating medium through the first heat exchanger, a second sub-circuit flowing the second heating medium through the first heat storing device, and the three-way valve communicating the second heat exchanger selectively to the first sub-circuit and the second sub-circuit; wherein the first heat exchanger is arranged on an upstream side of the first heat storing device in a flowing direction of the low-temperatured first heating medium; wherein the three-way valve executes a switching operation to flow the second heating medium into the first heat exchanger through the first sub-circuit in case the rapid cooling is demanded, and executes a switching operation to flow the second heating medium into the first heat storing device through the second sub-circuit in case the normal cooling is demanded; wherein a second heat storing device having a heat storage material which receives heat from the first heating medium and stores the heat therein is arranged in the first circulating circuit; and wherein the controller operates the first circulating circuit in accordance with a temperature of at least one of the first and second heat storing devices and operates the second circulating circuit in accordance with the air temperature.