Air conditioning device for vehicle
The present invention is provided with: an evaporator ( 6 ) in which a compressed refrigerant is vaporized; an expansion valve expanding the refrigerant before the refrigerant flows into the evaporator ( 6 ); refrigerant pipes ( 26, 27 ) that connect the evaporator ( 6 ) and the expansion valve to each other; and a unit case ( 3 ) housing the evaporator ( 6 ), the expansion valve, and the refrigerant pipes ( 26, 27 ), and including an air flow channel ( 4 ) for passing air through the evaporator ( 6 ). A refrigerant pipe housing chamber ( 31 ) is disposed in the unit case ( 3 ), and housing the refrigerant pipes ( 26, 27 ). The refrigerant pipe housing chamber ( 31 ) is partitioned while being isolated from the housing section for the evaporator ( 6 ) and the air flow channel ( 4 ). The outer circumferential surfaces of the refrigerant pipes ( 26, 27 ) are separated from the inner wall surface of the refrigerant pipe housing chamber ( 31 ). Furthermore, the thickness (t 1 ) of the wall of the refrigerant pipe housing chamber ( 31 ) is greater than the thickness (t 2 ) of the wall of the unit case ( 3 ).
1. A vehicular air conditioning device comprising:
an evaporator in which a refrigerant that is compressed is vaporized;
an expansion valve expanding the refrigerant before the refrigerant flows into the evaporator;
a refrigerant pipe connecting the evaporator and the expansion valve to each other;
a unit case housing the evaporator, the expansion valve, and the refrigerant pipe and comprising an air flow channel configured to pass air through the evaporator; and
a refrigerant pipe housing chamber disposed in the unit case and housing the refrigerant pipe,
the refrigerant pipe housing chamber being partitioned while being isolated from a housing section for the evaporator and the air flow channel; and
the refrigerant pipe housing chamber comprising a wall surface separated inward away from a wall surface of the unit case facing the wall surface of the refrigerant pipe housing chamber.
2. The vehicular air conditioning device according to claim 1 , wherein the refrigerant pipe comprises an outer circumferential surface separated from an inner wall surface of the refrigerant pipe housing chamber.
3. The vehicular air conditioning device according to claim 2 , wherein the refrigerant pipe housing chamber comprises a wall having a thickness greater than a thickness of a wall of the unit case.
4. The vehicular air conditioning device according to claim 2 , wherein the refrigerant pipe housing chamber houses the expansion valve together with the refrigerant pipe.
5. The vehicular air conditioning device according to claim 2 , wherein the refrigerant pipe housing chamber has a divided structure comprising a plurality of divided members, at least one of the plurality of divided members being formed integrally with a component of the unit case.
6. The vehicular air conditioning device according to claim 1 , wherein the refrigerant pipe housing chamber comprises a wall having a thickness greater than a thickness of a wall of the unit case.
7. The vehicular air conditioning device according to claim 6 , wherein the refrigerant pipe housing chamber houses the expansion valve together with the refrigerant pipe.
8. The vehicular air conditioning device according to claim 6 , wherein the refrigerant pipe housing chamber has a divided structure comprising a plurality of divided members, at least one of the plurality of divided members being formed integrally with a component of the unit case.
9. The vehicular air conditioning device according to claim 1 , wherein the refrigerant pipe hot sing chamber houses the expansion valve together with the refrigerant pipe.
10. The vehicular air conditioning device according to claim 9 , wherein the refrigerant pipe housing chamber has a divided structure comprising a plurality of divided members, at least one of the plurality of divided members being formed integrally with a component of the unit case.
11. The vehicular air conditioning device according to claim 1 , wherein the refrigerant pipe housing chamber has a divided structure comprising a plurality of divided members, at least one of the plurality of divided members being formed integrally with a component of the unit case.