HVLP spray unit
AssigneeJ. Wagner GmbH
InventorsThorsten Schnittger, Björn Freisinger
Life of this patent
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Abstract
A HVLP spray unit with an electric fan comprising a needle valve for metering the paint which is fed to an air cap, the needle valve comprising a valve body with an elongate interior space, a valve needle, a compression spring and a seal, the interior space between the seal and a nozzle opening of the valve body being configured as a paint chamber, into which a feed channel for the paint opens and which is flowed through by the paint during spray operation of the HVLP spray unit. Here, the interior space of the valve body is tapered between the feed channel and the seal in such a way that a needle guide is formed, and that, in a manner which lies opposite the paint chamber, the seal is arranged so as to bear against the needle guide.
Claims18
A HVLP spray unit with an electric fan comprising:
- a needle valve for metering paint which is fed to an air cap,
- the needle valve comprising a valve body with an elongate interior space, a valve needle, a compression spring, and a seal component having a groove,
- the elongate interior space between the seal component and a nozzle opening of the valve body being configured as a paint chamber, into which a feed channel for the paint opens and which is flowed through by the paint during spray operation of the HVLP spray unit,
- wherein the elongate interior space of the valve body is tapered between the feed channel and the seal component in such a way that a needle guide is formed,
- wherein the seal component lies opposite to the paint chamber and is arranged so as to bear against the needle guide,
- wherein the needle guide comprises a circumferential collar having a circumferential flange that receives the groove of the seal component, and
- wherein the groove of the seal component comprises an outer web and an inner web, and the circumferential flange receives the outer web and the inner web.
A HVLP spray unit with an electric fan comprising:
- a needle valve configured to meter a flow of paint which is fed to an air cap, the needle valve including a valve body with an elongate interior space, a needle, a compression spring, and a seal component having a groove;
- a paint chamber formed within the elongate interior space between the seal component and a nozzle opening of the valve body, wherein the flow of paint travels through a feed channel of the paint chamber during a spray operation of the HVLP spray unit;
- a needle guide formed by a portion of the elongate interior space that tapers toward the nozzle opening;
- wherein the needle guide comprises a circumferential collar having a circumferential flange;
- wherein the circumferential flange is configured to receive the groove of the seal component;
- and
- wherein the groove of the seal component includes an outer web and an inner web, and wherein the circumferential flange is configured to receive the outer web and the inner web.
A HVLP spray unit with an electric fan comprising:
- a needle valve for metering paint which is fed to an air cap;
- the needle valve comprising a valve body with an elongate interior space, a valve needle, a compression spring, and a seal component having a groove;
- the elongate interior space between the seal component and a nozzle opening of the valve body being configured as a paint chamber, into which a feed channel for the paint opens and which is flowed through by the paint during spray operation of the HVLP spray unit;
- wherein the elongate interior space of the valve body is tapered between the feed channel and the seal component in such a way that a needle guide is formed;
- wherein the seal component lies opposite to the paint chamber and is arranged so as to bear against the needle guide;
- wherein the needle guide comprises a circumferential collar having a circumferential flange that receives the groove of the seal component;
- and
- wherein an annularly circumferential receptacle is configured by way of the needle guide.
Dependencies are inferred from the claim text.