Heat exchanger system

Abstract

A heat exchanger system is disclosed by embodiments of the present invention. The heat exchanger system comprises an upper manifold, a middle manifold and a lower manifold arranged successively from top to bottom, wherein a first heat-exchanging tube is arranged between the upper manifold and the middle manifold, and a second heat-exchanging tube is arranged between the middle manifold and the lower manifold. The middle manifold has a first chamber and a second chamber separated from each other. During circulation of refrigerant, the refrigerant in the upper manifold flows through the first heat-exchanging tube down to the first chamber, and flows via a first communicating part into the chamber of the lower manifold, and subsequently the refrigerant flows through the second heat-exchanging tube up into the second chamber and then returns via a second communicating part to the upper manifold.

What is claimed is: 
     
         1 . A heat exchanger system, comprising an upper manifold, a middle manifold and a lower manifold arranged successively from top to bottom, wherein a first heat-exchanging tube is arranged between the upper manifold and the middle manifold, and a second heat-exchanging tube is arranged between the middle manifold and the lower manifold,
 wherein, the middle manifold has a first chamber and a second chamber separated from each other; and that during circulation of refrigerant, the refrigerant in the upper manifold flows through the first heat-exchanging tube down to the first chamber, and flows via a first communicating part into a chamber of the lower manifold, and subsequently the refrigerant flows through the second heat-exchanging tube up into the second chamber and then returns via a second communicating part to the upper manifold.   
     
     
         2 . The heat exchanger system of  claim 1 , wherein the first communicating part is a communicating or connecting tube with a communication function. 
     
     
         3 . The heat exchanger system of  claim 1 , wherein the second communicating part is a communicating or connecting tube with a communication function. 
     
     
         4 . The heat exchanger system of  claim 1 , wherein the first communicating part is at least one round or flat tube arranged between the lower manifold and the middle manifold, and the round or flat tube and the second heat-exchanging tube are arranged in a row between the lower manifold and the middle manifold; and/or
 the second communicating part is at least one round or flat tube arranged between the upper manifold and the middle manifold, and the round or flat tube and the first heat-exchanging tube are arranged in a row between the upper manifold and the middle manifold.   
     
     
         5 . The heat exchanger system of  claim 1 , wherein the upper manifold, the middle manifold and the first heat-exchanging tube arranged therebetween constitute a first heat exchanger, preferably a condenser, and the middle manifold, the lower manifold and the second heat-exchanging tube arranged therebetween constitute a second heat exchanger, preferably an evaporator. 
     
     
         6 . The heat exchanger system of  claim 5 , wherein the middle manifold is divided into the first chamber and the second chamber by a main partition extending obliquely, vertically, curvedly or windingly from an upper portion to a lower portion of the middle manifold. 
     
     
         7 . The heat exchanger system of  claim 5 , wherein the middle manifold is divided into the first chamber and the second chamber by a main partition extending in a longitudinal direction of the middle manifold from one of its ends to the other. 
     
     
         8 . The heat exchanger system of  claim 7 , wherein a first opening and a second opening are provided in the main partition, the refrigerant coming from the first heat exchanger enters from the first chamber via the first opening into the second heat exchanger, and the refrigerant flowing out of the second heat exchanger flows into the second chamber and via the second opening enters into the first heat exchanger. 
     
     
         9 . The heat exchanger system of  claim 8 , wherein a communicating flat or round tube in the second heat exchanger, situated between the middle manifold and the lower manifold, serves as the first communicating part, one end of the communicating flat or round tube in the second heat exchanger inserts through the first opening into the first chamber, and the other end communicates with a chamber of the lower manifold; and/or
 a communicating flat or round tube in the first heat exchanger, situated between the middle manifold and the upper manifold, serves as the second communicating part, one end of the communicating flat or round tube in the first heat exchanger inserts through the second opening into the second chamber, and the other end communicates with the chamber of the upper manifold.   
     
     
         10 . The heat exchanger system of  claim 7 , wherein the first communicating part is a first connecting tube communicating the chamber of the lower manifold with the first chamber of the middle manifold, and/or the second communicating part is a second connecting tube communicating the chamber of the upper manifold with the second chamber of the middle manifold. 
     
     
         11 . The heat exchanger system of  claim 10 , wherein a liquid distributing structure for distribution of the fluid coming from the first connecting tube is provided in the chamber of the lower manifold. 
     
     
         12 . The heat exchanger system of  claim 11 , wherein the liquid distributing structure is a fluid guiding tube connected to or integrally formed with the first connecting tube, on which fluid guiding tube spaced openings are provided. 
     
     
         13 . The heat exchanger system of  claim 8 , wherein the middle manifold further comprises at least one auxiliary baffle provided between the main partition and an upper and/or lower wall of the middle manifold, so as to divide a chamber of the middle manifold into at least one communicating chamber with a communication function, at least one said first chamber and at least one said second chamber. 
     
     
         14 . The heat exchanger system of  claim 13 , wherein the first chamber and the second chamber communicate with the at least one communicating chamber via respectively the first opening and the second opening in the main partition, and the at least one communicating chamber communicates with the corresponding first or second communicating part. 
     
     
         15 . The heat exchanger system of  claim 5 , wherein the first heat exchanger and/or the second heat exchanger, preferably the first heat-exchanging tube and/or the second heat-exchanging tube of the first heat exchanger and/or the second heat exchanger, are bent; or
 the first heat-exchanging tube and the second heat-exchanging tube are inserted respectively into the middle manifold in directions oblique to each other.   
     
     
         16 . A heat exchanger system, comprising an upper manifold, a first middle manifold, a second middle manifold and a lower manifold arranged successively from top to bottom, wherein a first heat-exchanging tube is arranged between the upper manifold and the first middle manifold, and a second heat-exchanging tube is arranged between the second middle manifold and the lower manifold,
 the first middle manifold is provided with a first partition by which the first middle manifold is divided into at least one first chamber and at least one first communicating chamber separated from each other, and the second middle manifold is provided with a second partition by which the second middle manifold is divided into at least one second chamber and at least one second communicating chamber separated from each other;   during circulation of refrigerant, the refrigerant in the upper manifold flows through the first heat-exchanging tube down to the first chamber and via a first connecting tube into the second communicating chamber, and flows via a first communicating part into a chamber of the lower manifold; subsequently, the refrigerant flows through the second heat-exchanging tube up into the second chamber and via a second connecting tube into the first communicating chamber, and then returns via a second communicating part to the upper manifold.   
     
     
         17 . The heat exchanger system of  claim 16 , wherein the first communicating part is a communicating or connecting tube with a communication function. 
     
     
         18 . The heat exchanger system of  claim 16 , wherein the second communicating part is a communicating or connecting tube with a communication function. 
     
     
         19 . The heat exchanger system of  claim 16 , wherein the first communicating part is at least one round or flat tube arranged between the lower manifold and the second middle manifold, and the round or flat tube and the second heat-exchanging tube are arranged in a row between the lower manifold and the second middle manifold; and/or
 the second communicating part is at least one round or flat tube arranged between the upper manifold and the first middle manifold, and the round or flat tube and the first heat-exchanging tube are arranged in a row between the upper manifold and the first middle manifold.   
     
     
         20 . The heat exchanger system  claim 16 , wherein the upper manifold and the first middle manifold and the first heat-exchanging tube arranged therebetween constitute a first heat exchanger, preferably a condenser, and the second middle manifold and the lower manifold and the second heat-exchanging tube arranged therebetween constitute a second heat exchanger, preferably an evaporator. 
     
     
         21 . The heat exchanger system of  claim 20 , wherein the first heat exchanger and/or the second heat exchanger, preferably the first heat-exchanging tube and/or the second heat-exchanging tube of the first heat exchanger and/or the second heat exchanger, are bent; or
 the first heat-exchanging tube and the second heat-exchanging tube are inserted respectively into the first middle manifold and the second middle manifold in directions oblique to each other.