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Valve cap

A technology of bonnet and motor, applied in the direction of non-electric variable control, instrument, temperature control, etc., can solve the problems of high power consumption, reducer noise, bonnet efficiency drop, etc., and achieve the effect of low noise

Inactive Publication Date: 2010-06-16
DANFOSS AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction gear reduces the efficiency of the valve cover, resulting in a relatively high power consumption during the adjustment movement
In addition, the reducer usually brings noise, which is especially undesirable when such a valve cover should be used in residential areas or in bedrooms

Method used

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Examples

Experimental program
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Embodiment Construction

[0033] figure 1 A valve cover 1 is schematically shown. The valve cover 1 has a housing 2 provided with fastening means 3 . The housing is basically designed as a hollow cylinder. It has an end wall 4 .

[0034] The motor 5 is housed in the casing 2 and has a stator 6 and a rotor 7 . During operation, the rotor 7 rotates and at the same time moves a transmission element 8 with an internal thread 9 . The internal thread 9 is screwed onto an external thread 10 provided on the stator extension 11 , which in turn is supported on the end wall 4 of the housing 2 .

[0035] The transmission element 8 is connected with an actuating element 13 having an actuating surface 14, and in the assembled state, a valve tappet 15 ( image 3 ) rests on the operating surface 14. Normally the tappet 15 is under spring preload in the open position. When the transmission part 8 and thus also the actuating part 13 are moved, the tappet 15 is pressed more or less into the valve in order to close...

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PUM

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Abstract

Disclosed is a valve attachment (1) for a valve, especially a heater valve or radiator valve. Said valve attachment (1) comprises a housing (2), an actuating element (8) that is movable in an actuating direction inside the housing (2), and an electric motor (5) which acts upon the actuating element (8) via a spindle drive (8, 27). In order to create a compact electrically controllable valve attachment, the motor (5) is connected directly to a rotating element (8) of the spindle drive (8, 11 ; 8, 27).

Description

technical field [0001] The invention relates to a valve cover for a heating or cooling valve, which comprises a shell, an operating member movable in the outer shell along the operating direction and an electric motor, and the electric motor acts on the operating member through a screw drive. Background technique [0002] The present invention is described below in conjunction with a heater valve. In a corresponding manner, however, the invention can also be used for a valve that controls the flow of refrigerant through the cooling surface or through the heat exchanger used for cooling. [0003] The heater valve is usually controlled by a thermostat valve cover that operates at a constant temperature. A thermostat bonnet contains a thermostatic element whose rate of expansion changes with temperature. If the temperature measured by the thermostatic element increases, the expansion rate of the thermostatic element increases. This then acts throttled on the heater valve. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/275
CPCG05D23/19
Inventor 布贾尼·弗雷德里克森
Owner DANFOSS AS