JPH0220064U

JPH0220064U -

Info

Publication number: JPH0220064U
Application number: JP9741188U
Authority: JP
Priority date: 1988-07-25
Filing date: 1988-07-25
Publication date: 1990-02-09

Description

[Brief explanation of drawings]

第１図は考案の一実施例による膨張弁３０の断
面図、第２図は従来の冷凍サイクル１およびブロ
ツク型の膨張弁２の断面図である。１……冷凍サイクル、２……ブロツク型の膨張
弁、３……コンプレツサ、４……コンデンサ、５
……リキツドタンク、６……エバポレータ、７…
…冷媒配管、８……弁本体、９……第１の流路、
１０……弁室、１１……第２の流路、１２……第
３の流路、１３……感温作動室、１４……第４の
流路、１５……スプリング押え、１６……調節用
スプリング、１７……弁体、１８……半円球状の
ケース、１９……ストツパ、２０……ダイヤフラ
ム、２１……パワーエレメント（圧力発生手段）
、２２……受け具、２３……作動杆、３０……膨
張弁、３１……弁本体、３２……第１の流路、３
３……弁室、３４……第２の流路、３５……装着
口、３６……パワーエレメント（圧力発生手段）
、３７……ケース、３７Ａ……ケース３７の段部
、３８……連結用パイプ、３８Ａ……連結用パイ
プ３８のフランジ、３９……配管ブロツク、３９
Ａ……配管ブロツク３９の装着部、４０……Ｏリ
ング、４１……押えプレート、４２……ボルト、
４３……ハンダ付け。 FIG. 1 is a sectional view of an expansion valve 30 according to an embodiment of the invention, and FIG. 2 is a sectional view of a conventional refrigeration cycle 1 and a block type expansion valve 2. 1... Refrigeration cycle, 2... Block type expansion valve, 3... Compressor, 4... Condenser, 5
...Liquid tank, 6...Evaporator, 7...
... Refrigerant piping, 8 ... Valve body, 9 ... First flow path,
10...Valve chamber, 11...Second channel, 12...Third channel, 13...Temperature sensitive operating chamber, 14...Fourth channel, 15...Spring retainer, 16... Adjustment spring, 17...Valve body, 18...Semi-spherical case, 19...Stopper, 20...Diaphragm, 21...Power element (pressure generating means)
, 22... Receiver, 23... Operating rod, 30... Expansion valve, 31... Valve body, 32... First flow path, 3
3... Valve chamber, 34... Second flow path, 35... Mounting port, 36... Power element (pressure generating means)
, 37... Case, 37A... Step part of case 37, 38... Connection pipe, 38A... Flange of connection pipe 38, 39... Piping block, 39
A... Mounting part of piping block 39, 40... O-ring, 41... Holding plate, 42... Bolt,
43...Soldering.

Claims

[Scope of claim for utility model registration] Disposed between the liquid tank and evaporator of a refrigeration cycle to reduce the refrigerant pressure, and
An expansion valve having a temperature-sensing section that senses the temperature of refrigerant in a low-pressure side refrigerant pipe between the evaporator and the compressor, wherein a connecting pipe for accommodating the temperature-sensing section is provided, and the connecting pipe is connected to the connecting pipe. An expansion valve, characterized in that the expansion valve is fixed to the refrigerant pipe via a piping block so as to open into the refrigerant pipe on the low pressure side.