Okvara in izboljšanje preklopnega ventila

The switching valve consists of a gas filter, a solenoid valve, and a three-way valve. When the time relay gives a signal and the solenoid valve 2 is energized, a small amount of compressed air enters the three-way valve cylinder B chamber through the filter and the solenoid valve. Under the pressure difference at both ends of the guide piston, the guide valve disc moves to the right, and the 5-6 valve disc presses the compressed air (positive flow) into the plate-type cold storage channel A→D. If the time relay gives an opposite signal to the solenoid valve again, the guide valve disc returns to the first working position (that is, the positive flow gas cannot enter the plate-type cold storage, and the reflux gas is discharged outside the stolp) . Na ta način dva preklopna ventila delujeta skupaj v ciklu, da bi dosegla namen kroženja in izmenjave plina pozitivnega pretoka in refluksa v hladnem skladišču plošče, da se vlago in ogljik dioksid v zraku, ki vstopa v stolp {{11}, na splošno preklopi v {.. minute .
Če je preklopni ventil zataknjen, to je, da tri-smernega kanala A → D in D → C kanala ni mogoče preklopiti (tri-smerni disk vodnika ventila je zataknjen na levi in desni skrajnosti) ali pa je kanal A → D in kanal D → C medsebojno povezan (tridelni vodnik ventila je v katerem Diski ventila niso povezani z mrtvim kanalom, ta pojav je najpogostejši), naprava za shranjevanje hladilnika na plošči ne more delovati normalno in delovno stanje bo uničeno .
Reduce the deformation of the three-way valve body. Since 1982, the wall thickness of the three-way valve body has been increased to increase the strength. In 1997, the hard connection of all channels of the three-way valve was changed to the hard connection of the D and C channels, and the A channel was connected to the bellows transition, which greatly reduced the deformation of the valve body and effectively preprečil pojav tridelnega ventila, zataknjenega v zgodnji fazi dela .
Spremenite mehka povezava pomožnega bata "v" trdo povezavo ", da se izognete popuščanju bata in nagib . Velikost batne palice se ustrezno poveča iz prvotnega premera 12 mm na 13 {{3} 4 mm, s čimer se poveča rama gredi; Pomožni bat se spremeni iz konkavne vrste v konveksni tip, tako da je pomožni bat neposredno povezan s ploščo ventila.