Refrigeration cycle device and heat cycle system
US-2018320942-A1 · Nov 8, 2018 · US
Air-conditioning apparatus
US12158294B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12158294-B2 |
| Application number | US-202017913537-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2020 |
| Priority date | May 25, 2020 |
| Publication date | Dec 3, 2024 |
| Grant date | Dec 3, 2024 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An air-conditioning apparatus includes a refrigerant circuit including a compressor, a strainer, and an expansion valve, and a controller configured to control the expansion valve in the refrigerant circuit. In the air-conditioning apparatus, in a case where the expansion valve is closed, the controller performs control to close the expansion valve after opening the expansion valve to cause an opening port diameter of the expansion valve to be greater than a mesh diameter of the strainer.
First claim
Opening claim text (preview).
The invention claimed is: 1. An air-conditioning apparatus, comprising: a refrigerant circuit including a compressor, a strainer, and an expansion valve; and a controller configured to control the expansion valve in the refrigerant circuit, wherein when a set opening degree of the expansion valve is defined as Ap, the controller performs control to measure an amount of time for which the opening degree A of the expansion valve is less than the set opening degree Ap, after operation of the air-conditioning apparatus starts, and responsive to determining that the measured time is greater than a threshold, the controller performs control to cause an opening port diameter of the expansion valve to be greater than a mesh diameter of the strainer and subsequently to close the expansion valve. 2. The air-conditioning apparatus of claim 1 , wherein, in a case where the mesh diameter of the strainer is P [mm], the set opening degree Ap of the expansion valve is f(p)×1.1 to 1.4, where f(p) is an expansion valve opening degree at which the opening port diameter of the expansion valve becomes P, and when the controller performs the control to cause the opening port diameter of the expansion valve to be greater than the mesh diameter of the strainer, the controller controls the opening port diameter of the expansion valve to the set opening degree Ap. 3. The air-conditioning apparatus of claim 1 , wherein the strainer is one of two strainers in the refrigerant circuit, and the expansion valve is located between the two strainers.
Assignees
Inventors
Classifications
Separators · CPC title
Damage · CPC title
Clogging · CPC title
Geometry problems, e.g. for reducing size · CPC title
Expansion valves · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12158294B2 cover?
- An air-conditioning apparatus includes a refrigerant circuit including a compressor, a strainer, and an expansion valve, and a controller configured to control the expansion valve in the refrigerant circuit. In the air-conditioning apparatus, in a case where the expansion valve is closed, the controller performs control to close the expansion valve after opening the expansion valve to cause an …
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification F25B41/31. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 03 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).