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A sub-cooled condenser for an air conditioning system includes a condenser portion, a sub-cooler portion located below that of the condenser portion, an integral receiver tank having an upper receiver first chamber with a first fluid port in hydraulic connection with the condenser portion and a lowe

A sub-cooled condenser for an air conditioning system includes a condenser portion, a sub-cooler portion located below that of the condenser portion, an integral receiver tank having an upper receiver first chamber with a first fluid port in hydraulic connection with the condenser portion and a lower receiver second chamber having a second fluid port in hydraulic connection with the sub-cooler portion, and a refrigerant conduit disposed in the receiver tank. The refrigerant conduit may include a top entry end extending into the upper receiver first chamber and a bottom discharge end extending in the lower receiver second chamber, wherein the bottom discharge end may extend below the second fluid port. The condenser portion may include multiple passes in which the refrigerant flows in an upward direction from the inlet of the condenser portion to the first fluid port that is in hydraulic connection to the upper receiver first chamber.

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1. A sub-cooled condenser for use in an air conditioning system, comprising: a first header having two header partitions dividing the first header into a lower first header chamber, an upper first header chamber above the lower first header chamber, and a second chamber below the lower first header

1. A sub-cooled condenser for use in an air conditioning system, comprising: a first header having two header partitions dividing the first header into a lower first header chamber, an upper first header chamber above the lower first header chamber, and a second chamber below the lower first header chamber with respect to the direction of gravity;a second header having two header partitions dividing the second header into a lower first header chamber, an upper first header chamber above the lower first header chamber, and a second chamber below the lower first header chamber with respect to the direction of gravity;three upstream groups of refrigerant tubes extending between and all of which are in hydraulic connection with the first header and said second header, a first one of the three upstream groups hydraulically connecting the lower first header chamber of the first header with the lower first header chamber of the second header, a second one of the three upstream groups hydraulically connecting the lower first header chamber of the second header with the upper first header chamber of the first header, and a third one of the three upstream groups hydraulically connecting the upper first header chamber of the first header with the upper first header chamber of the second header, thereby defining a condenser portion that condenses the refrigerant flowing therethrough to a liquid;an inlet opening of the sub-cooled condenser in fluid communication with the lower first header chamber of the first header;an outlet opening of the sub-cooled condenser in fluid communication with the second header chamber of the first header, the outlet opening located below the inlet opening with respect to the direction of gravity;a downstream group of refrigerant tubes extending between and in hydraulic connection with the second chamber of the first header and the second chamber of the second header, thereby defining a sub-cooler portion;the condenser portion is located above the sub-cooler portion with respect to the direction of gravity;an elongated receiver housing extending adjacently parallel to the second header, wherein the receiver housing includes a first fluid port in hydraulic connection with the upper first header chamber of the second header for receiving a liquid refrigerant from the upper first header chamber of the second header, and a second fluid port in hydraulic connection with the sub-cooler portion for discharging a liquid refrigerant to the sub-cooler portion; anda continuous refrigerant conduit disposed in the receiver housing, wherein the refrigerant conduit includes a top entry end and a bottom discharge end spaced from the top entry end, wherein the top entry end is in hydraulic communication with the first fluid port and the bottom discharge end is in hydraulic communication with the second fluid port, wherein the bottom discharge end extends below that of the second fluid port. 2. The sub-cooled condenser for use in an air conditioning system of claim 1, wherein the top entry end of refrigerant conduit is hydraulically coupled to the first fluid port such that the liquid refrigerant flows from the condenser portion through the first fluid port directly into the refrigerant conduit. 3. The sub-cooled condenser for use in an air conditioning system of claim 1, wherein the receiver housing includes a receiver separator dividing the receiver housing into a receiver first chamber having the first fluid port and a receiver second chamber having the second fluid port, andwherein the top entry end of refrigerant conduit extends into the receiver first chamber and the bottom discharge end of refrigerant conduit extends in the receiver second chamber. 4. The sub-cooled condenser for use in an air conditioning system of claim 3, wherein the bottom discharge end extends below that of the second fluid port. 5. The sub-cooled condenser for use in an air conditioning system of claim 4, wherein each of the first chamber of the first header and the first chamber of the second header includes at least one chamber partition dividing the condenser portion into multiple passes including a first-pass and a last-pass, wherein the first pass is below that of the last pass; andwherein the first chamber of the first header includes an inlet opening adjacent to and in hydraulic communication with the first-pass of the condenser portion; andwherein the first fluid port of the receiver first chamber is adjacent to and in hydraulic communication with the last-pass of the condenser portion. 6. The sub-cooled condenser for use in an air conditioning system of claim 5, wherein the second chamber of the first header includes an outlet opening adjacent to and in hydraulic communication with the sub-cooler portion. 7. The sub-cooled condenser for use in an air conditioning system of claim 6, wherein the first fluid port hydraulically connects the first chamber of the second header with the receiver first chamber for directing a condensed refrigerant from the condenser portion to the receiver tank. 8. The sub-cooled condenser for use in an air conditioning system of claim 7, wherein the second fluid port hydraulically connects the receiver second chamber with the second chamber of the second header for directing the condensed refrigerant from the receiver tank to the sub-cooler portion. 9. The sub-cooled condenser for use in an air conditioning system of claim 8, wherein the receiver second chamber is sized to contain sufficient refrigerant capacity to absorb fluctuations in the required amount of refrigeration caused through changes in operating conditions inside the refrigeration cycle and to safe-guard against the amount of refrigerant loss due to leakage over the life of the air-conditioning system, while maintaining a surface level of liquid refrigerant above that of the second fluid port.