Thermostat valve for controlling temperature of e.g. cooling fluid, in automobile engine, has butterfly valve releasing reduced flow through slight opened valve gap between valve seat and control surfaces and passages of butterfly valve

摘要

#CMT# #/CMT# The valve (10) has a thermostatic operating element (20) for operating a main valve (5) and a bypass valve (6). The main valve comprises a main valve link (22) with a control surface (23) that cooperates with a valve seat surface (24) of a valve opening (14) of a valve housing (12). A butterfly valve (30) is arranged adjacent to the main valve, and releases a reduced flow through a slight opened valve gap between the valve seat and control surfaces and passages (39) of the butterfly valve. The butterfly valve has a throttle disk (31) arranged on a piston (25) of the operating element. #CMT#USE : #/CMT# Thermostat valve for controlling temperature of coolant i.e. cooling fluid, in a combustion engine i.e. automobile engine (claimed). #CMT#ADVANTAGE : #/CMT# The butterfly valve is arranged adjacent to the main valve, and releases the reduced flow through the slight opened valve gap between the valve seat surface and the control surface and the passages of the butterfly valve, so that oscillations of the main valve link can be prevented while eliminating uncomfortable humming noises, thus avoiding generation of damages caused by pressure pulsations. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic vertical sectional view of a thermostat valve with a closed main valve and an opened bypass valve. 5 : Main valve 6 : Bypass valve 10 : Thermostat valve 12 : Valve housing 14 : Valve opening 20 : Thermostatic operating element 22 : Main valve link 23 : Control surface 24 : Valve seat surface 25 : Piston 30 : Butterfly valve 31 : Throttle disk 39 : Passages.