[특허]Combined heating and air conditioning system for vehicles

Bergstrom, Inc.

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특허 상세정보

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Combined heating and air conditioning system for vehicles

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60H-001/00 F25B-013/00
미국특허분류(USC)	165/202; 062/324.1; 062/324.2; 062/324.6
출원번호	US-0676870 (2007-02-20)
등록번호	US-8517087 (2013-08-27)
발명자 / 주소	Zeigler, Terry A. Bracey, John S. Connell, Brett Sean Sloan, Scott
출원인 / 주소	Bergstrom, Inc.
대리인 / 주소	Reinhart Boerner Van Deuren P.C.
인용정보	피인용 횟수 : 13 인용 특허 : 125

초록
▼

An HVAC system for heating and cooling a passenger compartment of a vehicle includes a first heat exchanger that transfers heat between a primary loop and a secondary loop. The primary loop is a reversible loop and uses high pressure refrigerant. A compressor pressurizes the refrigerant. A second heat exchanger selectively transfers heat energy to and from the passenger compartment. The secondary loop is a low pressure liquid coolant loop that passes through the first heat exchanger. A pump moves fluid through the secondary loop. A third heat exchanger transfers heat to and from an external medium from the fluid passing through the secondary loop. A secondary heat source adds heat to the secondary loop during a heating mode. A bypass means selectively bypasses the secondary heat source during a cooling mode.

대표
청구항
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1. A heating and air conditioning system of a passenger compartment of a vehicle, comprising: a first heat exchanger;a primary loop passing through the first heat exchanger and further comprising a compressor, a second heat exchanger, a flow reversing means for reversing the fluid flow through the first heat exchanger, and a first refrigerant metering device;a secondary loop passing through the first heat exchanger and further comprising a liquid pump, a third heat exchanger, a secondary heat source, and a bypass means for selectively bypassing the secondary heat source;wherein the secondary loop is thermally coupled to the primary loop by the first heat exchanger and the second heat exchanger is thermally coupled to an interior of the passenger compartment; and, further comprising a first air movement device disposed proximate the second heat exchanger so as to circulate air from the interior of the passenger compartment through the second heat exchanger. 2. The heating and air condition system of claim 1, wherein the secondary heat source is the engine of the vehicle. 3. The heating and air condition system of claim 1, wherein the secondary heat source and the third heat exchanger are remote from the primary loop and from the passenger compartment of the vehicle. 4. The heating and air conditioning system of claim 3, wherein the second heat exchanger is positioned in direct fluid communication with the interior of the passenger compartment. 5. The heating and air conditioning system of claim 1, wherein the first heat exchanger is a refrigerant-to-liquid heat exchanger, the second heat exchanger is a refrigerant-to-air heat exchanger, and the third heat exchanger is a liquid-to-air heat exchanger. 6. The heating and air condition system of claim 5, wherein the second and third heat exchangers are coils, and wherein the flow metering device is an expansion valve, the system further comprising a second air movement device disposed proximate the third heat exchanger. 7. The heating and air condition system of claim 1, wherein the compressor is a direct current motor-driven compressor. 8. The heating and air conditioning system of claim 1, wherein the secondary heat source is a fuel-fired heater. 9. The heating and air conditioning system of claim 1, wherein the primary loop is a high-pressure refrigerant circuit and the secondary loop is a low-pressure coolant circuit. 10. The heating and air conditioning system of claim 9, wherein the compressor, the first heat exchanger, the second heat exchanger, the flow reversing means, and the first refrigerant metering device are coupled by fixed connections. 11. The heating and air conditioning system of claim 10, wherein the primary loop is a modular self-contained unit adapted to be connected to the secondary loop. 12. A heating and air conditioning system of a passenger compartment of a vehicle, comprising: a first heat exchanger;a primary loop passing through the first heat exchanger and further comprising a compressor, a second heat exchanger, a flow reversing means for reversing the fluid flow through the primary loop, including the first heat exchanger, and a first refrigerant metering device;a secondary loop passing through the first heat exchanger and further comprising a liquid pump, a third heat exchanger, a secondary heat source, and a bypass means for selectively bypassing the secondary heat source;wherein the secondary loop is thermally coupled to the primary loop by the first heat exchanger and the second heat exchanger is thermally coupled to an interior of the passenger compartment; and, wherein, during a heating mode, liquid in the secondary loop passes through the secondary heat source and the flow reversing means directs refrigerant from the first heat exchanger directly to the compressor and refrigerant from the compressor directly to the second heat exchanger, and, during a cooling mode, the liquid in the secondary loop bypasses the secondary heat source and the flow reversing means directs refrigerant from the second heat exchanger directly to the compressor and refrigerant from the compressor directly to the first heat exchanger. 13. A heating and air conditioning system of a passenger compartment of a vehicle, the heating and air conditioning system comprising: a primary loop comprising a compressor, a first heat exchanger, a second heat exchanger, and a flow reversing means for selectively directing a fluid flow from the compressor to one of the first heat exchanger and the second heat exchanger and a fluid flow to the compressor from the other of the first heat exchanger and the second heat exchanger, wherein the flow reversing means is operable to reverse the flow through at least one of the first and second heat exchangers; the primary loop further comprising refrigerant metering device such that the compressor, the first heat exchanger, the second heat exchanger, the flow reversing means, and the refrigerant metering device are coupled by fixed tubing having permanent connections to form a high pressure closed fluid circuit;a secondary loop having a low pressure liquid coolant, the secondary loop passing through the first heat exchanger and thereby thermally communicating with the primary loop, the secondary loop further comprising a liquid pump, a third heat exchanger, a secondary heat source, and a bypass means for selectively bypassing the secondary heat-source; and, further comprising a first air movement device disposed proximate the second heat exchanger so as to circulate air from the interior of the passenger compartment through the second heat exchanger. 14. The heating and air conditioning system of claim 13, wherein the first primary loop is a self-contained unit. 15. The heating and air conditioning system of claim 14, wherein the secondary loop is coupled to the first heat exchanger with removable couplings. 16. The heating and air conditioning system of claim 13, wherein the third heat exchanger and secondary heat source are remote from the primary loop. 17. The heating and air condition system of claim 13, wherein the secondary heat source is at least one of an engine of the vehicle, a fuel fired heater, and an electrically resistive heater. 18. The heating and air condition system of claim 13, wherein the first heat exchanger is a refrigerant-to-liquid heat exchanger, the second heat exchanger is a refrigerant-to-air heat exchanger, and the third heat exchanger is a liquid-to-air heat exchanger. 19. The heating and air condition system of claim 13, wherein the compressor is a direct current motor-driven compressor, and the liquid pump is a direct current motor driven pump. 20. The heating and air conditioning system of claim 19, wherein the secondary heating source is at least one of a fuel-fired heater and an electrically resistive heater, and wherein the system further comprises electrically driven first and second air movement devices proximate to the second and third heat exchangers, respectively.

이 특허에 인용된 특허 (125)

이 특허를 인용한 특허 (13)

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특허 상세정보

Combined heating and air conditioning system for vehicles

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이 특허에 인용된 특허 (125)

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Combined heating and air conditioning system for vehicles

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이 특허에 인용된 특허 (125)

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