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OwnerUwe MAYWALD, Simon Ahrens LASSEN +1inventors
InventorsUwe MAYWALD, Simon Ahrens LASSEN, Bjarke Skovgård DAM
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The present disclosure pertains to a valve for a refrigeration application, in particular a shut-off and/or regulating valve. The valve includes a bonnet connected to a housing with two fluid openings, a spindle fully penetrating the bonnet and reaching inside the housing, and a piston with an upper guiding and sealing portion with a seal section, a bottom closing portion for opening and closing a fluid passage between the two fluid openings, and a piston tube between the upper guiding and sealing portion and the bottom closing portion. The spindle engages the piston for moving it between a closed position and an open position of the valve and a pressure balancing chamber is provided above and within the piston. The piston is sealed against the bonnet at the upper guiding and sealing portion. An inner surface of the bonnet guiding the upper guiding and sealing portion and/or an outer surface of the piston has a smaller diameter at a bottom portion than at an upper portion.
A valve for a refrigeration application, in particular a shut-off and/or regulating valve, comprising a bonnet connected to a housing with two fluid openings, a spindle fully penetrating the bonnet and reaching inside the housing, and a piston with an upper guiding and sealing portion with a seal section, a bottom closing portion for opening and closing a fluid passage between the two fluid openings, and a piston tube between the upper guiding and sealing portion and the bottom closing portion, wherein the spindle engages the piston for moving it between a closed position and an open position of the valve, wherein a pressure balancing chamber is provided above and within the piston, wherein the piston is sealed against the bonnet at the upper guiding and sealing portion, and wherein an inner surface of the bonnet guiding the upper guiding and sealing portion and/or an outer surface of the piston has a smaller diameter at a bottom portion than at an upper portion.
The valve according to claim 4, wherein the inner protrusion abuts the spindle in a fully open position of the valve for sealing the valve against the outside.
Dependencies are inferred from the claim text.