IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0312547
(2002-03-30)
|
우선권정보 |
DE-101 23 830(2001-05-16) |
국제출원번호 |
PCT/DE02/001164
(2002-03-30)
|
§371/§102 date |
20021231
(20021231)
|
국제공개번호 |
WO02/092368
(2002-11-21)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
7 |
초록
▼
The invention is based on a climate control system for a vehicle that is driven by an internal combustion engine (10), having a heating heat exchanger (24) which is connected to a coolant loop (12) of the engine (10) and is preceded upstream of a blower (48) by an evaporator (44), and a compressor (
The invention is based on a climate control system for a vehicle that is driven by an internal combustion engine (10), having a heating heat exchanger (24) which is connected to a coolant loop (12) of the engine (10) and is preceded upstream of a blower (48) by an evaporator (44), and a compressor (50) in a refrigerant loop (40), during a cooling mode, pumps a refrigerant via a gas cooler (42) and via an expansion valve (54) to the evaporator (44) and during a heating mode pumps it to the evaporator bypassing the gas cooler ( 42), and between the coolant loop (12) and the refrigerant loop (40) a coupling heat exchanger (38) is provided. It is proposed that the coupling heat exchanger (38) is disposed upstream of the gas cooler (42) on the side of the refrigerant loop (40) on the compression side of the compressor (50); that a bypass line (60) is connected parallel to the gas cooler (42), and the flow through the gas cooler (42) and the bypass line (60) is controlled as a function of operating parameters via a switching valve (62) in the bypass line (60 ) and one switching valve (64, 66) each at the inlet and outlet, respectively, of the gas cooler (42); and that in the heating mode, the evaporator (44) serves as a heat source.
대표청구항
▼
What is claimed is: 1. A climate control system for a vehicle that is driven by an internal combustion engine (10), having a heating heat exchanger (24) which is connected to a coolant loop (12) of the engine (10) and is preceded upstream of a blower (48) by an evaporator (44), and a compressor (50
What is claimed is: 1. A climate control system for a vehicle that is driven by an internal combustion engine (10), having a heating heat exchanger (24) which is connected to a coolant loop (12) of the engine (10) and is preceded upstream of a blower (48) by an evaporator (44), and a compressor (50) in a refrigerant loop (40), during a cooling mode, pumps a refrigerant via a gas cooler (42) and via an expansion valve (54) to the evaporator (44) and during a heating mode pumps it to the evaporator bypassing the gas cooler (42), and between the coolant loop (12) and the refrigerator loop (40) a coupling heat exchanger (38) is provided, characterized in that the coupling heat exchanger (38) is disposed upstream of the gas cooler ( 42) on the side of the refrigerant loop (40) on the compression side of the compressor (50); that a bypass line ( 60) is connected parallel to the gas cooler (42), and the flow through the gas cooler (42) and the bypass line (60) is controlled as a function of operating parameters via a switching valve (62) in the bypass line (60) and one switching valve ( 64, 66) each at the inlet and outlet, respectively, of the gas cooler (42); and that in the heating mode, the evaporator ( 44) serves as a heat source. 2. The climate control system of claim 1, characterized in that the refrigerant is a medium in which the heat output is effected at supercritical pressure. 3. The climate control system of claim 2, characterized in that the refrigerator is carbon dioxide. 4. The climate control system of claim 1, characterized in that the switching valve (64) at the outlet of the gas cooler ( 42) is embodied as a check valve. 5. The climate control system of claim 1, characterized in that the switching valve (62) in the bypass line (26) assigned to the gas cooler (42) and the switching valve (66) at the inlet to the gas cooler (42) are combined into one 3/2-way valve (82) (FIG. 5) . 6. The climate control system of claim 1, characterized in that the coupling heat exchanger (38) on the side of the coolant loop (12) is connected between the engine (10) and the heating heat exchanger (24). 7. The climate control system of claim 6, characterized in that the heating heat exchanger (24) is bypassed by a bypass line (26), at the branching point of which a heat regulating valve ( 28) controlled by the temperature of the heating air is disposed. 8. The climate control system of claim 1, characterized in that a throttle valve (74) is provided on the side of the refrigerant loop (40) upstream of the coupling heat exchanger ( 38). 9. The climate control system of claim 5, characterized in that upstream of the throttle valve (74), a bypass line (76) branches off that bypasses the coupling heat exchanger (38) and has a switching valve (68). 10. The climate control system of claim 9, characterized in that the switching valve (62) in the bypass line (26) assigned to the gas cooler (42) the switching valve (66) at the inlet to the gas cooler (42), and the switching valve ( 68) in the bypass line (76) assigned to the coupling heat exchanger (38) are combined into one 4/2-way valve (84). 11. The climate control system of claim 1, characterized in that the coupling heat exchanger (38) operates by the countercurrent principle. 12. The climate control system of claim 1, characterized in that the coupling heat exchanger (38) is produced in microstructured form. 13. The climate control system of claim 1, characterized in that downstream of the gas cooler (42), an inner heat exchanger (52) is disposed, which on the countercurrent principle experiences a flow through it on the one hand of the compressed refrigerant and on the other of the depressurized refrigerant downstream of the evaporator (44), and a bypass line (56) with a safety valve (58) is connected parallel to the inner heat exchanger (52). 14. The climate control system of claim 1, characterized in that parallel to the evaporator (44), a further evaporator ( 78) is provided, which is exposed to the outside air. 15. A method for operating a climate control system of claim 1, characterized in that upon a change from the cooling mode to the heating mode, the switching valve (66) at the inlet to the gas cooler (42) and the switching valve (62) in the bypass line (60) of the gas cooler (42) are closed, while the switching valve (64) at the outlet of the gas cooler (42) and the expansion valve (54) are opened, until such time as the pressure at the outlet of the compressor (50) has reached an upper set-point value, whereupon the switching valve (62) in the bypass line (60) opens and the switching valve (64) at the outlet of the gas cooler. (42) closes, until the pressure at the outlet of the compressor (50) has dropped to a lower set-point value.
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