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US 9,810,460 B2Granted
Reversible flow electric expansion valve
AssigneeTrane International Inc.
InventorStuart Means
Life of this patent
Estimating the term…
Abstract
An HVAC system includes an electronic expansion valve, a motor, an obturator connected to the motor, the obturator being selectively movable in response to operation of the motor, a removable seat selectively received within a complementary portion of the electronic expansion valve, the removable seat being selectively movable in response to operation of the motor.
Claims17
An HVAC system, comprising:
- an electronic expansion valve, comprising:
- a motor;
- an obturator connected to the motor, the obturator being selectively movable in response to operation of the motor;
- a removable seat selectively received within a complementary portion of the electronic expansion valve;
- and
- a retraction rod extending from the obturator and through at least a portion of the removable seat, the retraction rod being slidably received through a retraction hole of the removable seat, the removable seat being captured along the retraction rod between the obturator and a seat catch of the retraction rod, and the removable seat being selectively removable from the complementary portion in response to operation of the motor.
3 more elements
An electronically controlled expansion valve, comprising:
- a motor;
- a movable obturator connected to the motor;
- a removable seat selectively received within a complementary portion of the electronically controlled expansion valve, the removable seat comprising a meter bore configured to selectively receive at least a portion of the obturator;
- and
- a retraction rod extending from the obturator and through at least a portion of the removable seat, the refraction rod being slidably received through a retraction hole of the removable seat, and the removable seat being captured along the refraction rod between the obturator and a seat catch of the refraction rod;
- wherein the removable seat is selectively removable from the complementary portion in response to operation of the motor.
3 more elements
A method of operating a heat pump HVAC system, comprising:
- providing an electronically controlled expansion valve comprising a motor, an obturator movable by the motor, a removable seat movable by the motor, a complementary portion for selectively receiving the removable seat, and
- a retraction rod extending from the obturator and through at least a portion of the removable seat, the retraction rod being slidably received through a retraction hole of the removable seat, and the removable seat being captured along the retraction rod between the obturator and a seat catch of the retraction rod, wherein the removable seat is selectively removable from the complementary portion in response to operation of the motor;
- and
- locating the obturator relative to the removable seat to selectively allow operation of the electronically controlled expansion valve in at least one of a closed state with substantially no fluid flow through the valve, a metered state with fluid flow through the valve in a first direction, and an unmetered state with fluid flow through the valve in a first direction.
1 more element
Dependencies are inferred from the claim text.