Power element and expansion valve using same
US-2023012455-A1 · Jan 12, 2023 · US
Bulbless thermostatic expansion valve containing a thermal separation slot
US12487014B1 · US · B1
| Field | Value |
|---|---|
| Publication number | US-12487014-B1 |
| Application number | US-202418601184-A |
| Country | US |
| Kind code | B1 |
| Filing date | Mar 11, 2024 |
| Priority date | Mar 17, 2023 |
| Publication date | Dec 2, 2025 |
| Grant date | Dec 2, 2025 |
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- Title
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Abstract
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A bulbless thermostatic expansion valve includes a valve body having an inlet and an outlet, a suction line that is fluidly isolated from the inlet and the outlet, a valve member movable relative to the valve body for controlling flow of an operating fluid through the valve body, and a power element mounted to the valve body adjacent to the suction line and that senses temperature and pressure of the suction line. To account for potential temperature variations among components of the valve and ambient variations, the valve body has a thermal separation slot that is positioned between the inlet and the suction line to provide thermal separation of the power element relative to the inlet. The valve body may have a second thermal separation slot that is positioned between the outlet and the suction line to provide thermal separation of the power element relative to the outlet.
First claim
Opening claim text (preview).
What is claimed is: 1 . A bulbless thermostatic expansion valve comprising: a valve body having an inlet and an outlet, and a suction line that is fluidly isolated from the inlet and the outlet; a valve member movable relative to the valve body for controlling flow of an operating fluid through the valve body from the inlet to the outlet; and a power element mounted to the valve body adjacent to the suction line and that senses temperature and pressure of the suction line; wherein the valve body has a thermal separation slot that is positioned between the inlet and the suction line on an inlet side of the valve body to provide thermal separation of the power element relative to the inlet. 2 . The bulbless thermostatic expansion valve of claim 1 , wherein the thermal separation slot is configured as a groove that is formed into the valve body. 3 . The bulbless thermostatic expansion valve of claim 1 , wherein the valve body has a second thermal separation slot that is positioned between the outlet and the suction line on an outlet side of the valve body to provide thermal separation of the power element relative to the outlet. 4 . The bulbless thermostatic expansion valve of claim 3 , wherein the second thermal separation slot is configured as a groove that is formed into the valve body. 5 . The bulbless thermostatic expansion valve of claim 3 , wherein the thermal separation slot and the second thermal separation slot are configured as one contiguous thermal separation slot that wraps around the valve body from the inlet side to the outlet side. 6 . The bulbless thermostatic expansion valve of claim 3 , wherein the thermal separation slot and the second thermal separation slot are configured as one contiguous thermal separation slot that wraps around an entirety of the valve body. 7 . The bulbless thermostatic expansion valve of claim 1 , further comprising: a flange portion mounted on the inlet side of the valve body and that is configured to receive fluid conduits fluidly connected to the inlet and the suction line; and a thermal separation gasket that is positioned between the valve body and the flange portion to provide thermal separation of the valve body relative to the flange portion. 8 . The bulbless thermostatic expansion valve of claim 3 , further comprising: a flange portion mounted on the inlet side of the valve body and that is configured to receive fluid conduits fluidly connected to the inlet and the suction line; and a thermal separation gasket that is positioned between the valve body and the flange portion to provide thermal separation of the valve body relative to the flange portion.
Assignees
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Classifications
- F25B41/335Primary
via diaphragms · CPC title
at the suction side of the compressor · CPC title
Suction pressures · CPC title
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Frequently asked questions
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- What does patent US12487014B1 cover?
- A bulbless thermostatic expansion valve includes a valve body having an inlet and an outlet, a suction line that is fluidly isolated from the inlet and the outlet, a valve member movable relative to the valve body for controlling flow of an operating fluid through the valve body, and a power element mounted to the valve body adjacent to the suction line and that senses temperature and pressure …
- Who is the assignee on this patent?
- Parker Hannifin Corp
- What technology area does this patent fall under?
- Primary CPC classification F25B41/335. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 02 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).