Valve arrangement with expansion valve
AssigneeDanfoss A/S
InventorLars Bo Kjøng-Rasmussen
Life of this patent
Estimating the term…
Abstract
In a valve arrangement for closing off a working line in a refrigeration system, the working line includes a high and a low-pressure section. An expansion valve is coupled to the working line and has a working pressure chamber forming part of the valve. A control line system that includes a control device is coupled to the expansion valve and defines a connection that is in full communication with the high and low pressure sections of the working line. A closure element forming part of the control device is positioned in the connection line and arranged in the pressure equalizing configuration that couples the working pressure chamber of the expansion valve to the low-pressure section of the working line.
Claims11
A valve arrangement for closing off a working line in a refrigeration system, comprising:
- a working line having a high pressure section and a low pressure section;
- an expansion valve coupled to the working line and including a diaphragm capsule having a diaphragm located therein and defining a working pressure chamber adjacent the diaphragm;
- the expansion valve having a pressure equalizing connection extending between and in fluid communication with the working pressure chamber and the low pressure section of the working line;
- a control line system including, the pressure equalizing connection and a control device having a closure element arranged in the pressure equalizing connection, the control line system connecting the high and low pressure sections of the working line, and wherein
- the control line system is configured to provide a closing pressure in the expansion valve by means of the control device.
Dependencies are inferred from the claim text.