Temperature control system for a fuel tank and a canister of a vehicle using an acoustic refrigerator

Abstract

A temperature control system for a fuel tank and a canister of a vehicle includes: an acoustic refrigerator; a low temperature circulation line transmitting a low temperature circulation fluid cooled by the low temperature heat exchanging portion to the fuel tank; a low temperature heat exchanger installed within the fuel tank and connected to the low temperature circulation line so as to transfer heat within the fuel tank to the low temperature circulation fluid; a high temperature circulation line sending the high temperature circulation fluid heated by the high temperature heat exchanging portion to the canister; a high temperature heat exchanger installed to the canister and connected to the high temperature circulation line, so as to transfer heat of the high temperature circulation fluid to the canister; and a control unit controlling the acoustic refrigerator.

1 . A temperature control system for a fuel tank and a canister of a vehicle, comprising:
 an acoustic refrigerator comprising an acoustic wave generator, a resonator for converting an acoustic wave generated by the acoustic wave generator to a standing wave, a stack disposed between the acoustic wave generator and the resonator so asor to transmit the acoustic wave to the resonator, a low temperature heat exchanging portion formed at an end portion of the stack toward the resonator so as to transfer heat depending on compression and expansion of gas medium, and a high temperature heat exchanging portion formed at an end portion of the stack toward the acoustic generator so as to receive the heat transferred from the low temperature heat exchanging portion;   a low temperature circulation line wherein one end of which is connected to the low temperature heat exchanging portion and the other end is connected to the fuel tank so as to transmit a low temperature circulation fluid cooled by the low temperature heat exchanging portion to the fuel tank;   a low temperature heat exchanger installed within the fuel tank and connected to the low temperature circulation line so as to transfer heat within the fuel tank to the low temperature circulation fluid;   a high temperature circulation line wherein one end of which is connected to the high temperature heat exchanging portion and the other end is connected to the canister  20 , so as to send the high temperature circulation fluid heated by the high temperature heat exchanging portion to the canister;   a high temperature heat exchanger installed to the canister and connected to the high temperature circulation line, so as to transfer heat of the high temperature circulation fluid to the canister; and   a control unit controlling the acoustic refrigerator.   
   
   
       2 . The temperature control system of  claim 1 , further comprising a temperature sensor for detecting a temperature within the fuel tank and outputting a corresponding signal, and wherein the control unit controls the acoustic refrigerator on the basis of the signal of the temperature sensor. 
   
   
       3 . A temperature control system for a fuel tank of a vehicle, comprising:
 an acoustic refrigerator;   a low temperature circulation line wherein one end of which is connected to the low temperature heat exchanging portion and the other end of which is connected to the fuel tank so as to transmit a low temperature circulation fluid cooled by the low temperature heat exchanging portion to the fuel tank;   a low temperature heat exchanger installed within the fuel tank and connected to the low temperature circulation line so as to transfer heat within the fuel tank to the low temperature circulation fluid;   a high temperature circulation line wherein one end of which is connected to the high temperature heat exchanging portion and the other end is connected to the canister, so as to send the high temperature circulation fluid heated by the high temperature heat exchanging portion to the canister;   a high temperature heat exchanger installed to the canister and connected to the high temperature circulation line, so as to transfer heat of the high temperature circulation fluid to the canister; and   a control unit controlling the acoustic refrigerator.   
   
   
       4 . The temperature control system of  claim 3 , wherein the acoustic refrigerator further comprises:
 an acoustic wave generator;   a resonator for converting an acoustic wave generated by the acoustic wave generator to a standing wave;   a stack disposed between the acoustic wave generator and the resonator;   a low temperature heat exchanging portion formed at an end portion of the stack toward the resonator so as to transfer heat depending on compression and expansion of gas medium; and   a high temperature heat exchanging portion formed at an end portion of the stack toward the acoustic generator so as to receive the heat transferred from the low temperature heat exchanging portion.   
   
   
       5 . The temperature control system of  claim 4 , further comprising a temperature sensor for detecting a temperature within the fuel tank and outputting a corresponding signal, and wherein the control unit controls the acoustic refrigerator on the basis of the signal of the temperature sensor.