Stacking type header, heat exchanger and air-conditioning apparatus

Patent metadata

Field	Value
Publication number	US-2016202000-A1
Application number	US-201314915276-A
Country	US
Kind code	A1
Filing date	Oct 1, 2013
Priority date	Oct 1, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A stacking type header according to the present invention includes a first plate shaped body having a plurality of first outlet flow paths and a second plate shaped body stacked on the first plate shaped body and having a distribution flow path so that refrigerant flowing from a first inlet flow path is distributed and flows out to the plurality of first outlet flow paths. A branch flow path of the distribution flow path is formed to allow refrigerant flowing into a branch section to flow out in an upwardly declined or downwardly declined direction.

First claim

1 . A stacking type header comprising:
a first plate shaped body having a plurality of first outlet flow paths; and a second plate shaped body attached to the first plate shaped body and having a first inlet flow path, the second plate shaped body having at least a part of a distribution flow path to allow refrigerant flowing from the first inlet flow path to be distributed and flow out to the plurality of first outlet flow paths, the distribution flow path including at least one branch flow path having an inflow flow path, a branch section communicating with the inflow flow path, and a plurality of outflow flow paths communicating with the branch section, the inflow flow path including a partial flow path unparallel and non-perpendicular to a gravity direction to allow the refrigerant to flow into the branch section via the partial flow path, at least one outflow flow path of the plurality of outflow flow paths allowing the refrigerant to flow out in a direction being upwardly or downwardly inclined from a direction extending through the center of the branch section and perpendicular to the partial flow path at an end communicating with the branch section.

2 . The stacking type header of claim 1 , wherein the at least one outflow flow path comprises two outflow flow paths, each of the two outflow flow paths having each of the upwardly and downwardly inclined directions being opposite to each other.

3 . The stacking type header of claim 2 , wherein the two outflow flow paths linearly communicate with the branch section.

4 . The stacking type header of claim 2 , wherein, in one of the two outflow flow paths, an end that does not communicate with the branch section is located at a position higher in the gravity direction than an end communicating with the branch section, and in an other of the two outflow flow paths, an end that does not communicate with the branch section is located at a position lower in the gravity direction than an end communicating with the branch section.

5 . The stacking type header of claim 2 , wherein each of the two outflow flow paths is formed to allow the refrigerant to flow in a direction inclined upwardly or downwardly by 40 degrees or less from a direction extending through the center of the branch section and perpendicular to the gravity direction at an end communicating with the branch section.

6 . The stacking type header of claim 2 , wherein each of the two outflow flow paths is formed to allow the refrigerant to flow in a direction that is parallel to the partial flow path and is inclined to a straight line extending through the center of the branch section by an angle of 50 degrees or more and 90 degrees or less at an end communicating with the branch section.

7 . The stacking type header of claim 1 , wherein the second plate shaped body includes at least one plate shaped member having a recess, and the at least one branch flow path is formed by closing an area of the recess other than an area into which the refrigerant flows and an area from which the refrigerant flows out.

8 . The stacking type header of claim 1 , wherein the refrigerant branched flows into the inflow flow path, or the refrigerant flowing out of the at least one outflow flow path is branched.

9 . A heat exchanger comprising:
the stacking type header of claim 1 ; and a plurality of heat-transfer tubes connected to each of the plurality of first outlet flow paths.

10 . The heat exchanger of claim 9 , wherein each of the plurality of heat-transfer tubes is a flat tube.

11 . The heat exchanger of claim 9 , wherein each of the plurality of heat-transfer tubes is a circular tube.

12 . An air-conditioning apparatus comprising the heat exchanger of claim 9 , wherein the distribution flow path allows the refrigerant to flow into the plurality of first outlet flow paths when the heat exchanger operates as an evaporator.

Assignees

• Mitsubishi Electric Corp

Inventors

• Higashiiue Shinya
• Matsui Shigeyoshi
• Okazaki Takashi
• Ishibashi Akira
• Ito Daisuke
• Mochizuki Atsushi

Classifications

• F28F9/0275

  with multiple branch pipes · CPC title

• F28F3/086

  having one or more openings therein forming tubular heat-exchange passages · CPC title

• F28F9/0265 Primary

  by using guiding means or impingement means inside the header box · CPC title

• F28F9/0221

  Header boxes or end plates formed by stacked elements · CPC title

• F28F1/32

  the means having portions engaging further tubular elements · CPC title