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Thermostatic element, in particular, for a cooling circuit and a method for the production thereof

A technology of constant temperature components and components, applied in the field of manufacturing such components, to achieve the effect of small extrusion

Inactive Publication Date: 2008-04-02
VERNET SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, in the above three documents, from the point of view of the sealing of the thermostatic elements, the dimensions and production of this housing part are decisive, making the assembly of these elements along the automatic assembly line contradictory to high reliability

Method used

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  • Thermostatic element, in particular, for a cooling circuit and a method for the production thereof
  • Thermostatic element, in particular, for a cooling circuit and a method for the production thereof
  • Thermostatic element, in particular, for a cooling circuit and a method for the production thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0030] Figure 1 shows a thermostatic element 1 comprising:

[0031] - an approximately cylindrical metal cup 2 with a circular base and a longitudinal axis X-X,

[0032] - intumescent wax 3 stored in a cup 2, if necessary filled with a powder with good thermal conductivity, such as copper powder,

[0033] - a metal piston 4 generally cylindrical and substantially coaxial with the cup 2, one end 4A of which protrudes into the wax 3, the opposite end 4B of which is only partially shown; relative to the cup along axis X-X under the action of translation, and

[0034] - An integral assembly 5 adapted to guide the translation of the piston 4 relative to the cup 2 and to seal the wax 3 on the outside of the thermostatic element 1 .

[0035] For convenience, the remainder of the specification provides that the terms "lower" or "downward" refer to a direction towards the bottom of Figures 1 and 2, while the terms "top" and "upward" refer to the opposite direction. The same is true ...

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Abstract

A thermostatic element (1) comprises a cup (2) containing a thermo-expandable substance (3) and a piston (4) which is axially displaceable with respect to the cup by the action of the thermo-expandable substance produced during the expansion thereof. The guiding of the piston with respect to the cup and the sealing of the thermo-expandable substance are provided by the same arrangement of a single-piece holder (5) comprising a rigid insert (51) for guiding the piston which is embedded into a flexible envelop (52) impermeable to the thermo-expandable substance and is interposed between the insert, the piston and the cup. In order to provide a reliable sealing between the insert and the cup, including the case of assembling on an automatic line, the insert is provided with an abutment (51) which positions the single piece holder and projectingly extends towards the thermo-expandable substance away from the substantially flat part (51A) of the rest of the insert in a direction which is substantially parallel to the piston axis (X-X) and a space limited on the insert side oriented towards the thermo-expandable substance between the abutment and the flat part of the insert is filled with a corresponding part (52D) of the envelop which is pressed against the cup in a sealing manner.

Description

technical field [0001] The present invention relates to a thermostatic element which converts thermal energy into mechanical energy through the use of thermally expandable materials. The invention also relates to methods of manufacturing such elements. Background technique [0002] These elements are commonly used in the field of fluid conditioning, since they make it possible to supply a line of fluid to one or more distribution lines in steps according to the heat of the fluid to be conditioned and / or of other heat sources. These elements are therefore arranged in a cooling circuit in which a cooling fluid flows, in particular in a cooling circuit of an internal combustion engine of a motor vehicle or the like. [0003] Typically, a thermostatic element comprises a generally cylindrical metal cup containing an intumescent material such as wax. The element also includes a piston generally coaxial with the cup, the piston being able to translate relative to the cup under t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/02
CPCG05D23/021Y10T29/49105
Inventor R·马斯
Owner VERNET SA
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