Heat control system
First Claim
1. A heat control system comprisinga heat generator in which heat is generated during operation and a temperature is maintained in a predetermined range,a vapor compression type refrigerator having a compressor, a radiator, an evaporator and a pressure reducing means to transfer heat from a lower temperature side to a higher temperature side,a heat exchanger for exchanging heat between refrigerant discharged from the compressor and prior to being fed into the radiator and medium for exchanging heat with the heat generator, anda bypass connected between the outlet of the radiator and the outlet of the compressor to cause the refrigerant prior to being fed into the evaporator to flow serially through the heat exchanger and the radiator while detouring the evaporator and the compressor, whereinthe heat control system includes means for operating in a heating mode for heating the medium with the high-temperature refrigerant discharged from the compressor, and a heat dissipation mode for cooling the medium with the refrigerant discharged from the compressor and dissipating heat absorbed from the medium via the radiator, andduring the heat dissipation mode, at least a part of the refrigerant flowing out from the radiator is made to pass through the bypass.
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Accused Products
Abstract
There are provided a water-refrigerant heat exchanger 30 for exchanging heat between refrigerant discharged from a compressor 21 and engine-cooling water circulating an engine-cooling water circuit 10, prior to being fed into the radiator 22, and a bypass 25 for guiding the refrigerant prior to being fed into the evaporator 24 to the water-coolant heat exchanger 30 while bypassing the evaporator 24 and the compressor 21. When it is desired to accelerate the warming-up of the engine 11, the bypass 25 is closed to operate the compressor 21 to heat the engine-cooling water by high-pressure refrigerant, and when it is desired to complement the capacity of the radiator 12, the bypass 25 is open to guide the liquid-phase refrigerant to the water-refrigerant heat exchanger 30 to effectively cool the refrigerant by using the phase change of the refrigerant.
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Citations
6 Claims
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1. A heat control system comprising
a heat generator in which heat is generated during operation and a temperature is maintained in a predetermined range, a vapor compression type refrigerator having a compressor, a radiator, an evaporator and a pressure reducing means to transfer heat from a lower temperature side to a higher temperature side, a heat exchanger for exchanging heat between refrigerant discharged from the compressor and prior to being fed into the radiator and medium for exchanging heat with the heat generator, and a bypass connected between the outlet of the radiator and the outlet of the compressor to cause the refrigerant prior to being fed into the evaporator to flow serially through the heat exchanger and the radiator while detouring the evaporator and the compressor, wherein the heat control system includes means for operating in a heating mode for heating the medium with the high-temperature refrigerant discharged from the compressor, and a heat dissipation mode for cooling the medium with the refrigerant discharged from the compressor and dissipating heat absorbed from the medium via the radiator, and during the heat dissipation mode, at least a part of the refrigerant flowing out from the radiator is made to pass through the bypass.
Specification