| Patent Number |
Title Of Patent |
Date Issued |
| 7063137 |
Heat pump with secondary loop air-conditioning system |
June 20, 2006 |
| A chiller-condenser is disposed downstream of a condenser and a chiller-evaporator is disposed downstream of the chiller-condenser. A main three-way valve is disposed between the compressor and the condenser for directing flow from the compressor to the condenser in the air-condition |
| 7007493 |
Front-end integral air-conditioning unit |
March 7, 2006 |
| A sub-unit for a vehicle air conditioning system is shipped with a condenser, chiller and fluid lines. Snap together couplings are placed on free ends of the fluid lines whereby the sub-unit can be pre-charged, shipped, installed into the front end of a vehicle engine compartment and |
| 6968706 |
HVAC system with refrigerant venting |
November 29, 2005 |
| Each blow-off valve includes a valve body with a first movable wall defining a portion of the liquid fluid passage therein and a second movable wall defining a portion of the suction fluid passage therein. An actuator interconnects the movable walls for simultaneously moving the wall |
| 6915646 |
HVAC system with cooled dehydrator |
July 12, 2005 |
| An air conditioning system for a vehicle includes an accumulator/dehydrator (A/D) disposed in the suction fluid line for accumulating refrigerant and a heat transfer jacket surrounds the A/D for exchanging heat with the A/D and the refrigerant therein. The heat transfer jacket may define |
| 6907748 |
HVAC system with refrigerant venting |
June 21, 2005 |
| Each blow-off valve includes a valve body with a first movable wall defining a portion of the liquid fluid passage therein and a second movable wall defining a portion of the suction fluid passage therein. An actuator interconnects the movable walls for simultaneously moving the wall |
| 6837061 |
HVAC system shutdown sequence |
January 4, 2005 |
| A first solenoid-operated, discharge-line control valve (26) is moved between open and closed positions to control fluid flow in the discharge fluid line (18) between the compressor (12) and the condenser (14). A second solenoid-operated, liquid-line control valve (28) is moved between |
| 6758052 |
HVAC system with post-shut down isolation and venting of evaporator using H-shaped valve |
July 6, 2004 |
| An air conditioning system for a vehicle including an integral valve block (32) having a liquid line bore (42) extending therethrough and a suction line bore (44) extending therethrough with a transverse by-pass passage (34). The by-pass check valve (38) of the first system of FIGS. 1 an |
| 6748761 |
HVAC system with evaporator warming |
June 15, 2004 |
| An air conditioning system for a vehicle includes an evaporator for evaporating the refrigerant and including a predetermined portion in which refrigerant pools. A device for directing the flow of air to the predetermined portion to minimize the pooling of refrigerant in the predeter |
| 6748756 |
HVAC system with periodic override of evaporator control |
June 15, 2004 |
| An air conditioning system for a vehicle includes a controller for periodically increasing the stroke and output of the pistons in a variable stroke compressor for periodically reducing the amount of refrigerant resident in the evaporator. The controller includes a timer for establis |
| 6679084 |
Expansion device with shutoff mechanism |
January 20, 2004 |
| An expansion device that is able to perform the functions of refrigerant expansion, flow control and shut-off. A cage extends from the ends of a body and supports a screen cover. An orifice tube extends through the body and a conical shaped valve seat forms an outwardly flared inlet to t |
| 6405793 |
Secondary loop system for passenger compartment heating and cooling |
June 18, 2002 |
| A vehicle climate control system having a separate control for first and second separate areas of the vehicle. The climate control system includes a three-fluid heat exchanger having a first path with a first inlet and first outlet, and a second path with a second inlet and second outlet |
| 6230508 |
Automotive secondary loop air conditioning system |
May 15, 2001 |
| An automotive air conditioning system includes a primary, refrigerant loop (10,12,14) and a low pressure secondary loop (22, 24, 26, 28) across which heat is exchanged by a chiller (16). A liquid coolant reservoir (24, 42) in the secondary loop has a provision to allow the majority of it |
| 5898995 |
Method of manufacture of a primary heat exchanger jacketed by a secondary heat exchanger |
May 4, 1999 |
| A composite heat exchanger has an inner, serpentine circuit fluidly isolated from a surrounding outer, parallel flow circuit, allowing two different heat exchange media to be in thermal contact without physical mixing. A series of longer, inner tubes are bent into a U shape, with the |
