US 5,626,166 A · Temperature control valve without moving parts

Abstract

The present invention relates to a temperature control valve having no mog parts. The temperature control valve has a fluid inlet and a fluid outlet. A fluidic amplifier communicates with the fluid inlet and is characterized by a first outlet port for distributing a flow of fluid to an external device such as a heat exchanger, a second outlet port in communication with the fluid outlet, and two control ports. A feedback loop is used to control the fluidic amplifier. The feedback loop has a first channel with a temperature sensitive element connected to one of the control ports and a second channel with a bias resistor for setting a desired output temperature for fluid flowing through the fluid outlet. The first and second channels create a pressure difference between the control ports of the fluidic amplifier corresponding to the desired outlet temperature.

Claims16

Dependent claims

A temperature control valve comprising:

a fluid inlet and a fluid outlet;
a fluidic amplifier communicating with said fluid inlet, said fluidic amplifier having a first outlet port for distributing a flow of fluid directly to an external device, a second outlet port in communication with said fluid outlet, and two control ports;
means for controlling said fluidic amplifier comprising a feedback loop having a first channel with a temperature sensitive element and a second channel with means for setting a desired output temperature for fluid flowing through said fluid outlet;
and
said first and second channels being in fluid communication with said control ports and creating a desired head difference between said control ports, which head difference corresponds to the desired output temperature.

2 more elements

A control valve for use in a fluid system containing a heat exchanger for regulating the temperature of a fluid, said valve comprising:

a fluid inlet for receiving a flow of fluid at a first temperature;
an outlet joined to said heat exchanger for discharging fluid at a second temperature, a fluidic amplifier in communication with said fluid inlet, said fluidic amplifier having a first outlet port in direct fluid communication with said heat exchanger so that fluid at said first temperature enters said heat exchanger and a second outlet port in fluid communication with said outlet;
and
means for controlling the flow of fluid exiting said fluidic amplifier which is transferred to said heat exchanger through said first outlet port in order to regulate the temperature of said fluid exiting said outlet.

1 more element

Dependencies are inferred from the claim text.

Temperature control valve without moving parts

Life of this patent

Temperature control valve without moving parts

Life of this patent

Abstract

Claims16