Active balancing valve for a refrigeration and/or air-conditioning application
AssigneeDanfoss A/S
InventorsSigurd Larsen, Jens Boesen Pawlik, Clemens Fock
Life of this patent
Estimating the term…
Abstract
An active balancing valve for a refrigeration and/or air-conditioning application having a valve housing with an inlet orifice, an outlet orifice and a mounting portion, a main valve element with a main pressure balance orifice and a control element at least partially defining a pressure balance passage. Each element is slidable inside the valve housing and comprises a control surface for controlling a fluid flow between the inlet orifice and the outlet orifice. The control element closes the main pressure balance orifice of the main valve element in a closed state of the valve.
Claims20
An active balancing valve for a refrigeration and/or air-conditioning application, comprising
- a valve housing with an inlet orifice, an outlet orifice and a mounting portion,
- a main valve element with a main pressure balance orifice, and
- a control element at least partially defining a pressure balance passage,
- wherein each element is slidable inside the valve housing and comprises a control surface for controlling a fluid flow between the inlet orifice and the outlet orifice,
- wherein the main pressure balance orifice of the main valve element is closed by the control element in a closed state of the valve,
- wherein the pressure balance passage provides a fluid connection between a fluid chamber at the top of the control element and the bottom of the control element,
- wherein the fluid chamber is only in fluid communication with the pressure balance passage,
- wherein a linear actuator or a portion of a linear actuator for actuating the control element is provided at the mounting portion, and
- wherein the fluid chamber is provided between the linear actuator on the one side and the control element and the main valve element on the other side.
An active balancing valve for a refrigeration and/or air-conditioning application, comprising
- a valve housing with an inlet orifice, an outlet orifice and a mounting portion,
- a main valve element with a main pressure balance orifice, and
- a control element at least partially defining a pressure balance passage,
- wherein each element is slidable inside the valve housing and comprises a control surface for controlling a fluid flow between the inlet orifice and the outlet orifice,
- wherein the main pressure balance orifice of the main valve element is closed by the control element in a closed state of the valve,
- wherein the pressure balance passage provides a fluid connection between a fluid chamber at the top of the control element and the bottom of the control element, and
- wherein the control element is slidable relative to the main valve element, wherein the sliding distance corresponds to the distance between the position at which a secondary control surface of the control element contacts the main pressure balance orifice and the position at which a secondary stopper of the control element contacts a main stopper of the main valve element.
Dependencies are inferred from the claim text.