Thermostatic valve for a fluid flow circuit and method for manufacturing such a thermostatic valve

Abstract

The valve comprises a sleeve (20) regulating the flow of fluid in the housing of the valve between openings of the housing, the sleeve being movable along its central axis (X‑X). The valve also includes a thermostatic element (30) comprising a heat sensitive part and a moving part capable of translating relative to the heat sensitive part along a central axis under the effect of expansion of a thermally expandable material contained in the heat sensitive part move. A first part of the thermostatic element, among its heat-sensitive and moving parts, is kinematically connected to the housing by a stirrup (50), while a second part is kinematically connected to the sleeve so that the heat-sensitive and moving parts The displacement between the parts controls the adjustment action of the sleeve through the displacement of the sleeve. To make the valve more compact and reliable, the stirrup comprises at least one arm (52) extending lengthwise parallel to the central axis and connecting the first part of the thermostatic element to the housing via the inside of the sleeve an attachment part (18), and the at least one arm is provided at its longitudinal end (52C) ​​opposite the first part of the thermostatic element with means for fixing to the attachment part, these fixing means being designed to pass through the fixing means Plastic deformation of at least one component is locked to the attached component.

Description

technical field [0001] The invention relates to a thermostatic valve for a fluid circulation circuit. The invention also relates to a method for producing such a thermostatic valve. The invention more particularly relates to thermostatic valves, i.e. valves within a housing, the flow of fluid from the housing between the inlet and outlet holes is regulated by the sleeve, the movement of which is controlled by a thermostatic element, the thermostatic The temperature of the element is pressurized by the fluid. Background technique [0002] Valves with sleeves are commonly used in high displacement heat engines, especially those used to equip trucks or certain motor vehicles, which require a higher coolant flow rate than heat engines with lower displacement Higher coolant flow rates are used to run, and for these heat engines, thermostatic valves with gates are commonly used. In fact, the use of casings can often have so-called balanced baffles, ie, baffles in which the pres...

AI Technical Summary

Problems solved by technology

Such a stirrup can be easily and effectively secured to the thermostatic element, for example by fitting, crimping, welding, etc., but the fastening of the stirrup to the housing, usually made of plastic, can prove to be more problematic: Especially due to the presence of the sleeve and the assembly constraints of the valve, the stirrup is usually fastened to the housing by gripping or using a similar arrangement which has to be arranged within the geometric envelope defined by the outer side of the sleeve. externally, which significantly increases the outer diameter of the valve and which presents a risk of untimely release of the stirrup during initial installation of the valve, use of the valve and / or maintenance of the valve

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