초록 ▼

The invention relates to a magnetic valve for a refrigeration plant. The valve is of the type having a magnetic coil with a plug member of magnetic material projecting into a central bore thereof. The yoke has parallel limbs. A housing block member is mounted in fixed relation to the coil and in spa

The invention relates to a magnetic valve for a refrigeration plant. The valve is of the type having a magnetic coil with a plug member of magnetic material projecting into a central bore thereof. The yoke has parallel limbs. A housing block member is mounted in fixed relation to the coil and in spaced relation to the plug member to provide an armature space. A plunger type armature is disposed in the armature space where its stroke is limited at both ends thereof. The armature has a first end face magnetically pulled against the plug when the coil is energized and a return spring opposing the energizing force of the coil. The armature has a second end face at the other end thereof which is pushed into engagement with said housing block member by the return spring when the coil is deenergized. Layers of refrigerant-proof plastics such as polytetrafluoroethylene form one or both of the end faces of the engaging end faces between the plug member and the armature and between the armature and the housing block member. A resilient connection is provided between the plug member and the yoke to provide for cushioned relative movement therebetween.

대표청구항 ▼

A magnetic valve for a refrigerator plant, comprising, a magnetic coil unit having a central bore, a plug member of magnetic material projecting into said bore, a yoke, resilient means connecting said plug member to said yoke to provide for cushioned relative movement therebetween, a housing block m

A magnetic valve for a refrigerator plant, comprising, a magnetic coil unit having a central bore, a plug member of magnetic material projecting into said bore, a yoke, resilient means connecting said plug member to said yoke to provide for cushioned relative movement therebetween, a housing block member mounted in fixed relation to said coil unit and in spaced relation to said plug member to provide an armature space, said plug member and said housing block member having end faces bounding said armature space, a plunger type armature disposed in said bore in said armature space where its stroke is limited at both ends thereof, said armature having a first end face magnetically pulled against said plug when said coil unit is energized, return means opposing said energizing force of said coil unit, said armature having a second end face at the other end thereof which is pushed into engagement with said housing block member by said return means when said coil unit is de-energized, valve seat and valve seat closure means associated with at least one end of said armature and at least one of said members, a layer of refrigerant-proof plastics such as polytetrafluoroethylene forming one of said end faces of the engaging end faces between said plug member and said armature.