JPS6037779U

JPS6037779U - refrigerator evaporator

Info

Publication number: JPS6037779U
Application number: JP12938783U
Authority: JP
Inventors: 松居　明; 阿部　優二; 亨梶村
Original assignee: 富士電機株式会社
Priority date: 1983-08-22
Filing date: 1983-08-22
Publication date: 1985-03-15

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の蒸発器を含む逆サイクルホットガス除霜
方式を採用した冷凍機の冷媒回路図、第２図および第４
図はそれぞれこの考案の異なる実施例の蒸発器回路図、
第３図は第２図実施例の除霜運転時における動作説明の
ための等価回路図である。１・・・・・・圧縮器、２・・・・・・凝縮器、３・・
・・・・膨張弁、４・・・・・・蒸発器、６・・・・・
・四方弁、１３・・・・・・蒸発器の冷却管、１４・・
・・・・フィン、１５，１８・・・・・・逆止弁、１６
・・・・・・ホットガス回路、１７・・・・・・Ｕ字ト
ラップ、１９・・・・・・油戻し管路、Ｐ・・・・・・
コイル入口、Ｑ・・・・・・コイル出口。Figure 1 is a refrigerant circuit diagram of a refrigerator that uses a reverse cycle hot gas defrosting system that includes a conventional evaporator, Figures 2 and 4
The figures are evaporator circuit diagrams of different embodiments of this invention,
FIG. 3 is an equivalent circuit diagram for explaining the operation of the embodiment shown in FIG. 2 during defrosting operation. 1... Compressor, 2... Condenser, 3...
...Expansion valve, 4...Evaporator, 6...
・Four-way valve, 13...Evaporator cooling pipe, 14...
...Fin, 15, 18...Check valve, 16
...Hot gas circuit, 17...U-shaped trap, 19...Oil return pipe, P...
Coil inlet, Q... Coil outlet.

Claims

[Scope of utility model registration request]

(1) It has a finned coil type, and during cooling operation, liquid refrigerant is supplied from the top coil inlet through an expansion valve, while during defrosting, hot gas is supplied through the coil outlet using a reverse cycle method to operate the evaporator. In the evaporator of a refrigerator that operates as a condenser, the coil of the evaporator is divided into an upper coil and a lower coil, and the uppermost coil is the coil inlet. A check valve with a check valve connected in series to draw out an outlet pipe from the top of the lower coil, and bypassing the upper coil and the expansion valve by spanning between the bottom of the lower coil and the refrigerant circuit on the inlet side of the upper coil. An evaporator for a refrigerator characterized by being equipped with a hot gas circuit.

(2) Scope of Utility Model Registration In the evaporator described in claim 1, the diameter of the pipe having a U-shaped trap and check valve extending between the lowest stage of the lower coil and the coil outlet is smaller than the diameter of the coil pipe. An evaporator for a refrigerator, characterized in that an oil return pipe with a sufficiently small diameter is connected to the evaporator.