Valve actuator for water heating/cooling and sanitary systems

Abstract

An improved valve actuator (1) for water heating / cooling and sanitation systems, comprising a small DC motor with a mechanical clutch element (4), a first motor reduction unit (6) comprising a high gear A planetary reduction unit, a second reduction unit (14) for converting rotational motion into reciprocating axial motion, and a support frame (29, 7, 9, 26) for supporting the components, a circuit board (37) is used to control and drive the motor (2). Multiple connection adapters (33) allow the modified actuator (1) to be connected to valve boxes from different manufacturers.

Description

technical field [0001] The present invention relates to an improved valve actuator for water heating / cooling and sanitation systems. Background technique [0002] In the field of heating and sanitary systems, so-called "electrothermal" gates consist of an element that actually expands thermally, such as a wax vessel, which expands when heated from a solid to a molten state, allowing the valve, valve A box or similar gate is actuated from a closed position to an open position and vice versa. [0003] The described known electrothermal actuators also have small dimensions corresponding to the small dimensions of their expansion material containers. Thus, they can be assembled both to a single component, such as a valve, and to a valve box comprising a plurality of gates usually spaced less than 50 mm apart. [0004] However, while said prior actuators operate reliably in their opening / closing operations, they suffer from several drawbacks and disadvantages. First, their gat...

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Problems solved by technology

On the other hand, the overall size of existing electric actuators is relatively large, therefore, they cannot be properly miniaturized to effectively replace said existing electrothermal actuators

[0009] Moreover, electric actuators comprise many parts and have a rather high cost, therefore, they cannot be used in water heating / cooling and sanitary system valve boxes that include spaced apart gates, which increases the size, and furthermore, to the proposed to the mounting of components that adversely affect the

[0010] The need to replace existing electrothermal actuators with other types of actuators that allow continuous modulation of the controlled flow and provide shorter actuation times has been known in the field for 20 years and has not yet been Other actuators suitable to meet the above requirements

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