US 6,615,610 B1Granted

Air conditioning system and tubing apparatus to prevent heat gain due to engine compartment heat

AssigneeDelphi Technologies, Inc.

InventorsEdward Douglas Pettitt, John Paul Telesz, Jing Zheng

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Abstract

A concentric tubing apparatus prevents heat gain in an air conditioning system. The heat gain results from heat generated in an engine compartment of a vehicle. To accomplish this, the tubing apparatus includes a first and second refrigerant tubes. The first refrigerant tube is in fluid communication with a receiver and an evaporator of the air conditioning system to accommodate the flow of the refrigerant from the receiver to the evaporator, and the second refrigerant tube is in fluid communication with the receiver and the evaporator to accommodate the flow of the refrigerant from the evaporator to the receiver. The second refrigerant tube is disposed concentrically about the first refrigerant tube such that the second refrigerant tube insulates the refrigerant flowing in the first refrigerant tube from the heat generated in the engine compartment. Thus, heat gain in the refrigerant flowing in the first refrigerant tube to the evaporator is prevented.

Claims15

Dependent claims

An air conditioning system for preventing heat gain due to heat generated in an engine compartment of a vehicle, said air conditioning system comprising:

a refrigerant compressor;
a condenser in fluid communication with an outlet of said refrigerant compressor;
a multi-function receiver comprising an outer cavity and an inner cavity wherein said outer cavity is in fluid communication with an outlet of said condenser for receiving the refrigerant from said condenser;
an evaporator in fluid communication with said outer cavity of said receiver for receiving the refrigerant from said receiver and with said inner cavity of said receiver for sending the refrigerant through said inner cavity and to an inlet of said refrigerant compressor;
a first refrigerant tube in fluid communication with said receiver and said evaporator to accommodate the flow of the refrigerant from said outer cavity of said receiver to said evaporator;
and
a second refrigerant tube in fluid communication with said receiver and said evaporator to accommodate the flow of the refrigerant from said evaporator to said inner cavity of said receiver;
wherein said second refrigerant tube is disposed concentrically about said first refrigerant tube such that said second refrigerant tube insulates the refrigerant flowing in said first refrigerant tube from the heat generated in the engine compartment thereby preventing heat gain in the refrigerant flowing in said first refrigerant tube to said evaporator.

5 more elements

A concentric tubing apparatus adapted for use in an air conditioning system wherein the air conditioning system includes refrigerant, a refrigerant compressor, a condenser in fluid communication with an outlet of the refrigerant compressor, a multi-function receiver in fluid communication with an outlet of the condenser for receiving the refrigerant from the condenser, and an evaporator in fluid communication an outer cavity of the receiver for receiving the refrigerant from the receiver and with an inner cavity of the receiver for sending the refrigerant to the receiver and to an inlet of the refrigerant compressor, wherein said concentric tubing apparatus prevents heat gain due to heat generated in an engine compartment of a vehicle and comprises:

a first refrigerant tube adapted to be in fluid communication with the receiver and the evaporator to accommodate the flow of the refrigerant from the receiver to the evaporator;
and
a second refrigerant tube adapted to be in fluid communication with the receiver and the evaporator to accommodate the flow of the refrigerant from the evaporator to the receiver;
wherein said second refrigerant tube is disposed concentrically about said first refrigerant tube such that said second refrigerant tube insulates the refrigerant flowing in said first refrigerant tube from the heat generated in the engine compartment thereby preventing heat gain in the refrigerant flowing in said first refrigerant tube to the evaporator.

1 more element

Dependencies are inferred from the claim text.