JPH0370838U

JPH0370838U -

Info

Publication number: JPH0370838U
Application number: JP13224989U
Authority: JP
Priority date: 1989-11-13
Filing date: 1989-11-13
Publication date: 1991-07-17
Also published as: JPH0451000Y2

Description

[Brief explanation of drawings]

第１図は本願の第１の考案の蒸発器とアキユム
レータの連結構造の第１実施例を示す縦断面図、
第２図は第１実施例の形成に用いる治具を示す斜
視図、第３図は第１実施例の形成の一工程を示す
縦断面図、第４図は第２実施例を示す縦断面図、
第５図は第３実施例を示す縦断面図、第６図は第
４実施例を示す縦断面図、第７図は第５実施例を
示す縦断面図、第８図は第６実施例を示す縦断面
図、第９図は第６実施例で用いるインナーパイプ
の組立前の状態を示す斜視図、第１０図は同じく
組立後の状態を示す斜視図、第１１図は本願の第
２の考案の蒸発器とアキユムレータの連結構造の
一実施例を示す縦断面図、第１２図は冷蔵庫の冷
凍サイクルを示す図、第１３図、第１４図は蒸発
器とアキユムレータの連結構造の第１従来例を示
す縦断面図、第１５図は同じく第２従来例を示す
縦断面図である。１……蒸発器、２……アキユム
レータ、３……冷媒流通管、３ａ……端部、１１
……アキユムレータ本体、１２……インナーパイ
プ、１３……開口、１２ａ，１３ａ……凹部、４
０……裏当て用パイプ、４１……外向き凸部。 FIG. 1 is a longitudinal sectional view showing a first embodiment of the evaporator and accumulator connection structure of the first invention of the present application;
Fig. 2 is a perspective view showing a jig used for forming the first embodiment, Fig. 3 is a longitudinal sectional view showing one step of forming the first embodiment, and Fig. 4 is a longitudinal sectional view showing the second embodiment. figure,
FIG. 5 is a longitudinal sectional view showing the third embodiment, FIG. 6 is a longitudinal sectional view showing the fourth embodiment, FIG. 7 is a longitudinal sectional view showing the fifth embodiment, and FIG. 8 is a longitudinal sectional view showing the sixth embodiment. FIG. 9 is a perspective view showing the state before assembly of the inner pipe used in the sixth embodiment, FIG. 10 is a perspective view similarly showing the state after assembly, and FIG. 11 is the second embodiment of the present application. FIG. 12 is a diagram showing the refrigeration cycle of a refrigerator, and FIGS. 13 and 14 are a first embodiment of the evaporator and accumulator connection structure devised by FIG. 15 is a vertical cross-sectional view showing a conventional example, and FIG. 15 is a vertical cross-sectional view showing a second conventional example. DESCRIPTION OF SYMBOLS 1... Evaporator, 2... Accumulator, 3... Refrigerant flow pipe, 3a... End, 11
...accumulator body, 12...inner pipe, 13...opening, 12a, 13a...recess, 4
0...Backing pipe, 41...Outward convex portion.

Claims

[Scope of Claim for Utility Model Registration] (1) The end of the refrigerant flow pipe of the evaporator is defined as the portion of the stainless steel inner pipe inserted through the cylindrical opening in the aluminum accumulator body that protrudes from the opening. In a structure in which the evaporator and the accumulator are connected by welding the peripheral edge of the tip of the opening and the peripheral edge of the tip of the end of the refrigerant flow pipe, the part of the inner pipe facing the welded part is The tip surface of the opening is butt-welded to the tip surface of the end of the refrigerant flow pipe, and the inner pipe is fixed to the accumulator body or the refrigerant flow pipe using another part of the inner pipe. Connecting structure of evaporator and accumulator. (2) Insert an aluminum inner pipe into the aluminum accumulator body through one cylindrical opening, and make the end of the inner pipe slightly protrude from the tip of the opening, and form an outward convex approximately at the center of the lengthwise direction. Insert one end of the stainless steel backing pipe with a section into the end of the inner pipe up to the outward convex part, and insert the end of the evaporator refrigerant flow pipe into the stainless steel backing pipe. Fit the other end up to the outward convex portion, and weld the tip periphery of the opening of the accumulator body, the tip periphery of the inner pipe, and the tip periphery of the refrigerant flow pipe. A connecting structure of an evaporator and an accumulator.