Internal cooling apparatus for automobiles
View Patent ↗An internal cooling apparatus for automobiles includes a first expansion valve for spraying a coolant to a main evaporator through a high-pressure pipe, a compressor receiving the coolant evaporated in the main evaporator through a low-pressure pipe, a condenser receiving the coolant compressed in the compressor, and a plurality of sub-evaporators each being installed inside of a seat to contact an automobile passenger. One end of each of the sub-evaporators is communicated with the high-pressure pipe and the other end thereof is communicated with the low-pressure pipe such that part of the coolant sprayed through the first expansion valve is supplied to the compressor via each of the sub-evaporators.
1. An internal cooling apparatus for automobiles, the apparatus comprising:
a first expansion valve;
a main evaporator configured to receive a refrigerant from the first expansion valve through a high-pressure pipe;
a compressor configured to receive the refrigerant evaporated in the main evaporator through a low-pressure pipe;
a condenser configured to receive the refrigerant compressed in the compressor;
a plurality of sub-evaporators formed of a resin tube, each configured to be installed inside a seat to contact with an automobile passenger; and
a second expansion valve configured to receive a part of the refrigerant passing through the condenser;
wherein the second expansion valve and the sub-evaporator are connected in parallel with the first expansion valve and the main evaporator,
wherein the plurality of sub-evaporators are connected in parallel with one another, and
wherein one end of each of the sub-evaporators is communicated with the second expansion valve and the other end thereof is communicated with the low-pressure pipe such that the refrigerant sprayed through the second expansion valve is supplied to the compressor through each of the sub-evaporators.
2. The apparatus according to claim 1 , wherein a housing is wrapped around the resin tube.
3. The apparatus according to claim 2 , wherein the resin tube is sewn or bonded to the housing.
4. The apparatus according to claim 2 , wherein the housing is provided with a filler material holding the resin tube.
5. The apparatus according to claim 1 , wherein the sub-evaporator is formed of a resin tube and a plurality of prominences and depressions are formed in the inner diameter of the resin tube in radial directions.
6. The apparatus according to claim 1 , wherein the sub-evaporator is formed of a resin tube and a plurality of prominences and depressions are formed in the resin tube in circumferential directions.
7. The apparatus according to claim 1 , wherein each of the sub-evaporators is provided with an operation valve capable of turning on or off flow of the refrigerant.
8. The apparatus according to claim 1 , further comprising:
a sub-evaporator for a steering wheel configured to be installed in a steering wheel to contact with an automobile passenger,
wherein one end of the sub-evaporator for the steering wheel is communicated with the second expansion valve, and the other end thereof is communicated with the low-pressure pipe such that the refrigerant sprayed through the second expansion valve is supplied to the compressor through the sub-evaporator for the steering wheel.
9. The apparatus according to claim 8 , wherein the sub-evaporator for the steering wheel is a resin tube wrapping around a handle portion of the steering wheel.
10. The apparatus according to claim 1 , further comprising a sensor for detecting seating of a passenger, and a control unit for controlling on or off of the operation valve according to signals from the sensor.