JPS6454183A - Two stage type expansion valve - Google Patents
Two stage type expansion valveInfo
- Publication number
- JPS6454183A JPS6454183A JP63098262A JP9826288A JPS6454183A JP S6454183 A JPS6454183 A JP S6454183A JP 63098262 A JP63098262 A JP 63098262A JP 9826288 A JP9826288 A JP 9826288A JP S6454183 A JPS6454183 A JP S6454183A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- valve
- chamber
- refrigerant
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Safety Valves (AREA)
Abstract
PURPOSE: To defrost an outdoor heat exchanger without adding special piping or the like, by constructing the second stop valve to be opened or closed with the fluid pressure at a junction between an expansion valve and a fixed throttle channel as pilot pressure. CONSTITUTION: In a heating operation, the pressurized refrigerant of an indoor heat exchanger B enters the lower valve chamber 1b from the second fluid passage 4, and then reaches a back pressure chamber 1g via a fixed throttle passage 6a. The flow rate of the pressurized refrigerant is controlled by a needle valve body 3, and it flows to an outdoor heat exchanger A via the upper valve chamber 2a, an interconnecting passage 1f, the first stop valve chamber 1e, and the first fluid passage 5. If the needle valve is opened successively from this condition, the flow rate of the refrigerant is increased. Further, the pressure in the back pressure chamber 1g is decreased by the circulation resistance of the fixed throttle channel 6a, and the second valve body 6 moves upward while compressing a valve spring 7 by the vertical pressure difference to open the second stop valve. Therefore, the large part of the high temperature refrigerant in an incomplete condensed condition in the indoor heat exchanger B flows into the outdoor heat exchanger A directly from the second fluid passage 4 to perform defrosting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63098262A JP2645854B2 (en) | 1987-05-08 | 1988-04-22 | Two-stage expansion valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-110849 | 1987-05-08 | ||
| JP11084987 | 1987-05-08 | ||
| JP63098262A JP2645854B2 (en) | 1987-05-08 | 1988-04-22 | Two-stage expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6454183A true JPS6454183A (en) | 1989-03-01 |
| JP2645854B2 JP2645854B2 (en) | 1997-08-25 |
Family
ID=26439455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63098262A Expired - Fee Related JP2645854B2 (en) | 1987-05-08 | 1988-04-22 | Two-stage expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2645854B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511636A (en) * | 2012-06-27 | 2014-01-15 | 浙江三花股份有限公司 | Electronic expansion valve |
| WO2023143202A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
-
1988
- 1988-04-22 JP JP63098262A patent/JP2645854B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511636A (en) * | 2012-06-27 | 2014-01-15 | 浙江三花股份有限公司 | Electronic expansion valve |
| WO2023143202A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2645854B2 (en) | 1997-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |