Heat exchanger

Abstract

A heat exchanger ( 100 ) is provided, including a first manifold ( 10 ) and a distributing pipe ( 40 ). The distributing pipe ( 40 ) includes an elbow portion ( 41 ) configured for introducing a refrigerant, the elbow portion extends out of the first manifold ( 10 ), and along a direction perpendicular to an axis of the first manifold (10), a projection of the elbow portion ( 41 ) is located on the first manifold (10). The first manifold (10) includes a positioning portion ( 11 ), and the positioning portion ( 11 ) cooperates with the elbow portion ( 41 ) to lock the distributing pipe ( 40 ) onto the first manifold ( 10 ).

1 . A heat exchanger, comprising a first manifold and a distributing pipe, wherein the distributing pipe is partially inserted into the first manifold along an axis of the first manifold; and
 the distributing pipe comprises an elbow portion configured for introducing a refrigerant, the elbow portion extends out of the first manifold, and along a direction perpendicular to the axis of the first manifold, a projection of the elbow portion is located on the first manifold, wherein the first manifold comprises a positioning portion, and the positioning portion cooperates with the elbow portion to lock the distributing pipe onto the first manifold.   
     
     
         2 . The heat exchanger of  claim 1 , wherein the positioning portion is configured as a positioning groove that is provided on the first manifold, the distributing pipe is locked onto the first manifold by clamping between the elbow portion and the positioning groove. 
     
     
         3 . The heat exchanger of  claim 2 , wherein the positioning groove comprises a first groove portion and a second groove portion, the second groove portion is in communication with the first groove portion; the distributing pipe is capable of driving the elbow portion to be clamped into the first manifold along a direction of the first groove portion, and the distributing pipe is locked onto the first manifold by clamping between the second groove portion and the elbow portion. 
     
     
         4 . The heat exchanger of  claim 3 , wherein a depth direction of the second groove portion is perpendicular to a depth direction of the first groove portion. 
     
     
         5 . The heat exchanger of  claim 2 , wherein the positioning groove is configured as a V-shaped structure, and the distributing pipe is capable of driving the elbow portion to be clamped to a groove bottom of the positioning groove. 
     
     
         6 . The heat exchanger of  claim 5 , wherein the groove bottom of the positioning groove is configured as an arc surface to fit with a pipe wall of the elbow portion. 
     
     
         7 . The heat exchanger of  claim 1 , wherein a cover plate is mounted in the first manifold, and the distributing pipe passes through the cover plate and extends into the first manifold; and
 an assembly between the distributing pipe and the cover plate is sealed, so that the cover plate and the first manifold are enclosed to form an independent chamber.   
     
     
         8 . The heat exchanger of  claim 7 , wherein a buffer member is filled between the first manifold and the distributing pipe, and the buffer member is disposed outside the independent chamber. 
     
     
         9 . The heat exchanger of  claim 8 , wherein the buffer member is configured as a pearl cotton. 
     
     
         10 . The heat exchanger of  claim 1 , further comprising a second manifold and a plurality of heat exchange pipes, wherein the plurality of heat exchange pipes are disposed between the first manifold and the second manifold, and the plurality of heat exchange pipes are in communication with the distributing pipe and the second manifold, respectively. 
     
     
         11 . The heat exchanger of  claim 10 , wherein a distance between pipe ports of the plurality of heat exchange pipes and the distributing pipe is defined as N, which satisfies the following relationship: 2 mm≤N≤3 mm. 
     
     
         12 . The heat exchanger of  claim 1 , wherein an inner diameter of the distributing pipe is defined as D 1 , which satisfies the following relationship: D 1 >5 mm. 
     
     
         13 . The heat exchanger of  claim 1 , wherein an outer diameter of the distributing pipe is defined as OD 1 , an inner diameter of the first manifold is defined as D 2 , and the outer diameter OD 1  of the distributing pipe and the inner diameter D 2  of the first manifold satisfy the following relationship: 0.2*D2<OD 1 <0.5*D 2 . 
     
     
         14 . The heat exchanger of  claim 10 , wherein a distance between the distributing pipe and an inner wall of the first manifold that is relatively proximal to the plurality of heat exchange pipes is defined as H, and a distance between the distributing pipe and an inner wall of the first manifold that is relatively away from the plurality of heat exchange pipes is defined as h, an outer diameter of the distributing pipe is defined as OD 1 , and the distance H between the distributing pipe and the inner wall of the first manifold that is relatively proximal to the plurality of heat exchange pipes, the distance h between the distributing pipe and the inner wall of the first manifold that is relatively away from the plurality of heat exchange pipes, and the outer diameter OD 1  of the distributing pipe satisfy the following relationship: h+OD 1 <H. 
     
     
         15 . The heat exchanger of  claim 1 , wherein a bending radius of the elbow portion is defined as R, a distance between the distributing pipe and an inner wall of the first manifold that is relatively proximal to the plurality of heat exchange pipes is defined as H, and the bending radius R of the elbow portion and the distance H between the distributing pipe and the inner wall of the first manifold that is relatively proximal to the plurality of heat exchange pipes satisfy the following relationship: R<H.