Heat exchanger

Abstract

Disclosed herein is a heat exchanger according to the spirit of the present disclosure which includes an inlet pipe, an outlet pipe and a connection pipe configured to connect a first header with a second header. In the heat exchanger, since a refrigerant exchanges heat while flowing in only one of an upward direction and a downward direction, circulation of the refrigerant may be improved, and since each of the first header and the second header includes a plurality of divided chambers formed therein, and the refrigerant may be repeatedly distributed according to a flow of the refrigerant passing through each chamber, distribution and mixing of the refrigerant may be improved.

What is claimed is: 
     
         1 . A heat exchanger comprising:
 tubes configured to permit a flow of refrigerant and to permit the refrigerant to exchange heat with external air, wherein the tubes are arranged in a plurality of rows having a first row and a second row;   a first header connected to one end of each of the tubes;   a second header connected to another end of each of the tubes;   an inlet pipe configured to introduce the refrigerant into the first header from an outside;   an outlet pipe configured to discharge the refrigerant from the second header to the outside; and   a connection pipe configured to permit the refrigerant to bypass the tubes and flow from the second header to the first header.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the first header comprises a first chamber configured to enable the refrigerant to flow through the tubes in the first row, a second chamber configured to enable the refrigerant to flow through the tubes in the second row, a third chamber configured to distribute the refrigerant to the first chamber, and a fourth chamber configured to distribute the refrigerant to the second chamber. 
     
     
         3 . The heat exchanger according to  claim 2 , wherein the first chamber comprises a first sub-chamber configured to introduce the refrigerant from the inlet pipe, and a second sub-chamber configured to introduce the refrigerant from the third chamber and configured to enable the refrigerant to flow to the tubes in the first row, and
 the second chamber comprises a first sub-chamber configured to introduce the refrigerant from the connection pipe, and a second sub-chamber configured to introduce the refrigerant from the fourth chamber and configured to enable the refrigerant to flow to the tubes in the second row.   
     
     
         4 . The heat exchanger according to  claim 3 , wherein the third chamber comprises a through-hole through configured to introduce the refrigerant from the first sub-chamber of the first chamber, and a plurality of distribution holes which are disposed to be spaced apart from each other at a predetermined distance in a lengthwise direction of the third chamber and configured to distribute the refrigerant to the second sub-chamber of the first chamber, and
 the fourth chamber comprises a through-hole configured to introduce the refrigerant from the first sub-chamber of the second chamber, and a plurality of distribution holes which are disposed to be spaced apart from each other at a predetermined distance in a lengthwise direction of the fourth chamber and configured to distribute the refrigerant to the second sub-chamber of the second chamber.   
     
     
         5 . The heat exchanger according to  claim 4 , wherein each of the distribution holes of the third chamber and the fourth chamber is formed so that a length thereof in a lengthwise direction of the first header is longer than a length thereof in a width direction of the first header. 
     
     
         6 . The heat exchanger according to  claim 4 , wherein each of the third chamber and the fourth chamber has three distribution holes. 
     
     
         7 . The heat exchanger according to  claim 4 , wherein each of the distribution holes of the third chamber is formed so that a length thereof in a lengthwise direction of the third chamber is longer than a length thereof in a width direction of the third chamber, and
 the distribution holes of the fourth chamber are formed so that a diameter of the distribution hole located at a side of the through-hole is smaller than a diameter of the distribution hole located at another side.   
     
     
         8 . The heat exchanger according to  claim 7 , wherein each of the third chamber and the fourth chamber has two distribution holes, and
 the distribution hole of the fourth chamber which is located at the side of the through-hole has a diameter of 5 mm or less.   
     
     
         9 . The heat exchanger according to  claim 2 , wherein the first header comprises cover baffles which are coupled to both ends of the first header to seal both opened ends of the first chamber and the second chamber. 
     
     
         10 . The heat exchanger according to  claim 2 , wherein the first header comprises caps which are coupled to both ends of the first header to seal both opened ends of the third chamber and the fourth chamber. 
     
     
         11 . The heat exchanger according to  claim 3 , wherein the first header comprises a partition baffle which divides the first sub-chamber and the second sub-chamber of the first chamber, and a partition baffle which divides the first sub-chamber and the second sub-chamber of the second chamber. 
     
     
         12 . The heat exchanger according to  claim 1 , wherein the first header comprises a first chamber which is in communication with the inlet pipe and the tubes in the first row, a second chamber which is in communication with the connection pipe and the tubes in the second row, a third chamber which is in communication with the first chamber, and a fourth chamber which is in communication with the second chamber, and
 the second header comprises a fifth chamber which is in communication with the connection pipe and the tubes in the first row, a sixth chamber which is in communication with the outlet pipe and the tubes in the second row, a seventh chamber which is in communication with the fifth chamber, and an eighth chamber which is in communication with the sixth chamber.   
     
     
         13 . The heat exchanger according to  claim 12 , wherein the first chamber comprises a first sub-chamber which is in communication with the inlet pipe, and a second sub-chamber which is in communication with the tubes in the first row,
 the second chamber comprises a first sub-chamber which is in communication with the connection pipe, and a second sub-chamber which is in communication with the tubes in the second row, and the fifth chamber comprises a first sub-chamber which is in communication with the connection pipe, and   a second sub-chamber which is in communication with the tubes in the first row, and the sixth chamber comprises a first sub-chamber which is in communication with the outlet pipe, and a second sub-chamber which is in communication with the tubes in the second row.   
     
     
         14 . The heat exchanger according to  claim 13 , wherein the third chamber comprises a through-hole which is in communication with the first sub-chamber of the first chamber, and a plurality of distribution holes which are disposed to be spaced apart from each other at a predetermined distance in a lengthwise direction of the first header, and are in communication with the second sub-chamber of the first chamber,
 the fourth chamber comprises a through-hole which is in communication with the first sub-chamber of the second chamber, and a plurality of distribution holes which are disposed to be spaced apart from each other at a predetermined distance in the lengthwise direction of the first header, and are in communication with the second sub-chamber of the second chamber,   the seventh chamber comprises a through-hole which is in communication with the first sub-chamber of the fifth chamber, and a plurality of distribution holes which are disposed to be spaced apart from each other at a predetermined distance in a lengthwise direction of the second header, and are in communication with the second sub-chamber of the fifth chamber, and   the eighth chamber comprises a through-hole which is in communication with the first sub-chamber of the sixth chamber, and a plurality of distribution holes which are disposed to be spaced apart from each other at a predetermined distance in the lengthwise direction of the second header, and are in communication with the second sub-chamber of the sixth chamber.   
     
     
         15 . The heat exchanger according to  claim 14 , wherein each of the distribution holes of the third chamber and the fourth chamber is formed so that a length thereof in the lengthwise direction of the first header is longer than a length thereof in a width direction of the first header,
 each of the distribution holes of the seventh chamber is formed so that a length thereof in a lengthwise direction of the seventh chamber is longer than a length thereof in a width direction of the seventh chamber, and   the distribution holes of the eighth chamber are formed so that a diameter of the distribution hole located at a side of the through-hole is smaller than a diameter of the distribution hole located at another side.   
     
     
         16 . The heat exchanger according to  claim 1 , wherein the first header comprises a body and a cover,
 the cover is coupled with the body, and forms a first chamber configured to enable the refrigerant to flow through the tubes in the first row and a second chamber configured to enable the refrigerant to flow through the tubes in the second row, and   the body comprises a third chamber configured to distribute the refrigerant to the first chamber, and a fourth chamber that distributes the refrigerant to the second chamber.   
     
     
         17 . The heat exchanger according to  claim 16 , wherein the body comprises a central partition wall which divides the first chamber and the second chamber, and
 the cover comprises a coupling hole through which a part of the central partition wall passes.   
     
     
         18 . The heat exchanger according to  claim 16 , wherein the body of the first header comprises a wall which forms an internal space, and a tube stopper which protrudes from the wall toward the tubes so as to restrict an insertion depth of the tubes. 
     
     
         19 . The heat exchanger according to  claim 16 , wherein the body of the first header is formed of an extruded material of aluminum,
 the cover of the first header is formed of a clad material of aluminum, and   the cover is bonded to the body by brazing.   
     
     
         20 . The heat exchanger according to  claim 16 , wherein the cover comprises a first cover which forms the first chamber, and a second cover which forms the second chamber. 
     
     
         21 . A heat exchanger comprising:
 tubes configured to permit a flow of refrigerant and to permit the refrigerant to exchange heat with external air, and wherein the tubes are arranged in a plurality of rows having a first row and a second row;   a first header connected to one end of each of the tubes and includes a plurality of chambers which are divided to distribute the refrigerant;   a second header connected to another end of each of the tubes and includes a plurality of chambers which are divided to distribute the refrigerant;   an inlet pipe configured to introduce the refrigerant into the first header from an outside; and   an outlet pipe configured to discharge the refrigerant from the second header to the outside.   
     
     
         22 . The heat exchanger according to  claim 21 , wherein each of the first header and the second header is divided into four chambers. 
     
     
         23 . The heat exchanger according to  claim 22 , wherein the first header and the second header are connected with each other by a connection pipe provided to enable the refrigerant to bypass the tubes,
 the first header comprises a first chamber configured to enable the refrigerant to flow through the inlet pipe and the tubes in the first row, a second chamber configured to enable the refrigerant to flow through the connection pipe and the tubes in the second row, a third chamber configured to enable the refrigerant to flow through the first chamber, and a fourth chamber configured to enable the refrigerant to flow through the second chamber, and   the second header comprises a fifth chamber configured to enable the refrigerant to flow through the connection pipe and the tubes in the first row, a sixth chamber configured to enable the refrigerant to flow through the outlet pipe and the tubes in the second row, a seventh chamber configured to enable the refrigerant to flow through the third chamber, and an eighth chamber configured to enable the refrigerant to flow through the fourth chamber.   
     
     
         24 . A heat exchanger comprising:
 tubes arranged in a plurality of rows having a first row and a second row and configured to permit a flow of refrigerant in the tubes in the first row and the tubes in the second row in a same direction and to permit the exchange of heat with external air;   a first header connected to one end of each of the tubes and including a plurality of chambers which are divided to distribute the refrigerant;   a second header connected to the other end of each of the tubes and including a plurality of chambers which are divided to distribute the refrigerant;   an inlet pipe configured to introduce the refrigerant into the first header from an outside; and   an outlet pipe configured to discharge the refrigerant from the second header to the outside.