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Reduced length pressure compensating liquid flow regulator

A technology of pressure compensation and length reduction, applied in the field of regulators, which can solve problems such as inability to regulate liquid flow and flow regulators that are not completely satisfactory

Inactive Publication Date: 2008-05-21
MINEBEA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Prior art flow regulators have not been entirely satisfactory in use because they do not regulate liquid flow to a tight enough range to be useful for specific demanding customer applications

Method used

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  • Reduced length pressure compensating liquid flow regulator
  • Reduced length pressure compensating liquid flow regulator
  • Reduced length pressure compensating liquid flow regulator

Examples

Experimental program
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Embodiment Construction

[0019] Briefly, a pressure compensated fluid flow control valve or regulator directs high velocity fluid flow through a restrictor of a biased poppet valve, thereby creating a pressure differential across the poppet valve. The force created by the pressure differential moves the biased poppet valve against the biasing device and narrows the inlet or metering area into the valve, thereby reducing the differential pressure across the restrictor. The differential pressure across the restrictor can thus be controlled to maintain a constant liquid flow regardless of the inlet pressure of the fluid delivered to the regulator.

[0020] Referring now to the drawings, and in particular to Figures 1A and 1B, there is shown generally at 10 a flow regulator in accordance with the present invention. As shown, the flow regulator 10 includes a poppet valve, generally indicated at 20, a biasing device, generally indicated at 22, a seat, generally indicated at 24, and a support, generally indi...

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PUM

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Abstract

A reduced length, pressure compensating liquid flow regulator includes a poppet defining a longitudinally extending hollow cylinder having a front sense orifice and a rear orifice. A retainer maintains a biasing spring disposed at least partially within the cylinder, the retainer including a front sidewall defining a central aperture and a rear sidewall surface defining rear side slots, the retainer front sidewall forming an annular space between the cylinder rear orifice and the retainer front sidewalls. A seat has a closed front face spaced from and facing the cylinder, side passages rearwardly of the seat front face, and a downstream passage. The biasing spring biases the cylinder rear orifice longitudinally away from the seat. A hollow housing slidably receives the cylinder and fixedly receives the retainer means and the seat, the housing directing liquid flow from the retainer side slots into the seat side passages. The magnitude of the spacing between the seat front face and the cylinder rear orifice is self-adjusting as an inverse function of the magnitude of the flow rate, thereby to provide a substantially constant flow rate through the regulator by compensating for variations in the pressure differential across the sense orifice.

Description

field of invention [0001] This invention relates to a pressure compensated liquid flow regulator and, more particularly, to such a regulator having a reduced length. Background technique [0002] The prior art teaches a liquid flow regulator which controls hydraulic flow to a predetermined level regardless of the pressure differential across the regulator. For example, such a flow conditioner is commercially available from Westbrook Corporation of Connecticut under the trade mark 500 Flosert. This product controls hydraulic flow at a predetermined level by maintaining a constant pressure drop across a fixed or sensing orifice, regardless of the pressure differential across the regulator. The spring or bias of the flow regulator is external to the metering poppet, thus limiting the use of the regulator in situations where only limited length regulators can be accommodated. For example, a slot for a flow regulator may have a mounting hole length of less than 25.4 mm (1 inch)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D7/01
CPCG05D7/0133Y10T137/7792
Inventor 鲁赛尔·D·威尔费特
Owner MINEBEA CO LTD