JPH0367968U

JPH0367968U -

Info

Publication number: JPH0367968U
Application number: JP12724089U
Authority: JP
Priority date: 1989-10-31
Filing date: 1989-10-31
Publication date: 1991-07-03

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る膨張弁の概略
断面図、第２図は同膨張弁の要部断面図、第３図
は同実施例で用いる調節ナツトの平面図、第４，
５，６図はそれぞれ他の実施例に係る膨張弁の要
部断面図、第７図は従来の膨張弁の概略断面図で
ある。６……スロート部、７……ボール弁、８，２１
，２６，２８……バルブホルダー、１１，２２…
…スプリング、１４，２３……調節ナツト、２７
……スプリング案内ロツド、２９……スリーブ。 Fig. 1 is a schematic sectional view of an expansion valve according to an embodiment of the present invention, Fig. 2 is a sectional view of essential parts of the expansion valve, Fig. 3 is a plan view of an adjustment nut used in the embodiment,
5 and 6 are sectional views of essential parts of expansion valves according to other embodiments, respectively, and FIG. 7 is a schematic sectional view of a conventional expansion valve. 6... Throat part, 7... Ball valve, 8, 21
, 26, 28... Valve holder, 11, 22...
... Spring, 14, 23 ... Adjustment nut, 27
...Spring guide rod, 29...Sleeve.

Claims

[Claims for Utility Model Registration] 1. A ball valve 7 for adjusting the opening degree of the throat portion 6 is provided in the throat portion 6 through which liquid refrigerant flows,
A valve holder 21 that holds this ball valve 7,
One end of the spring 22 is in contact with the spring 22 so as to elastically repel the elements 26 and 28 in the direction of the throat portion 6, and the other end of the spring 22 is in contact with an adjusting nut 23. In the expansion valve, the flow port 24 formed in the adjustment nut 23 is formed on the outer side of the outer diameter of the spring 22, and the flow port 24 is formed in the adjustment nut 23. An expansion valve characterized in that the refrigerant that has passed through flows through the outer peripheral side of the spring 22. 2. The expansion valve according to claim 1, further comprising a spring guide rod 27 at the lower end of the valve holder 26, which extends in the axial direction on the inner peripheral side of the spring 22 to a position near the adjustment nut 23. 3 At the lower end of the valve halter 28, a sleeve 29 is provided that covers the outer periphery of the spring 22 in the axial direction.
The expansion valve according to claim 1, having: 4. The expansion valve according to claim 1, further comprising a sleeve 29 at the upper end of the adjustment nut 23, which covers the outer periphery of the spring 22 in the axial direction.