CN201391676Y - Thermal expansion valve - Google Patents
Thermal expansion valve Download PDFInfo
- Publication number
- CN201391676Y CN201391676Y CN200920116587U CN200920116587U CN201391676Y CN 201391676 Y CN201391676 Y CN 201391676Y CN 200920116587 U CN200920116587 U CN 200920116587U CN 200920116587 U CN200920116587 U CN 200920116587U CN 201391676 Y CN201391676 Y CN 201391676Y
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- conical valve
- valve core
- conical
- thermostatic expansion
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000003507 refrigerant Substances 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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- Temperature-Responsive Valves (AREA)
Abstract
A thermostatic expansion valve belongs to the technical field of throttling of a vapor compression type refrigerating system and is suitable for thermostatic expansion valves working in various single directions and two directions, small holes (3-2) are radially arranged at the small end of a conical valve core (3), and the small holes (3-2) are communicated with an axial hole (3-1) of the conical valve core. When the bellows temperature sensing system (1) of the thermostatic expansion valve leaks, a conical annular channel between the conical valve hole (2-1) and the conical valve core (3) is closed, and high-pressure normal-temperature liquid refrigerant is throttled and depressurized through a channel formed by the axial hole (3-1) of the conical valve core and the small hole (3-2), so that a certain circulation amount of the refrigerating system is still ensured, and the compressor can still work normally.
Description
Technical field
The utility model relates to a kind of heating power expansion valve, belongs to the throttling technology field in the vapour compression refrigeration system, is applicable to the heating power expansion valve of various one-way only operations and two-way working.
Background technique
The existing heating power expansion valve that is used for refrigeration system, behind bellows temperature-sensitive system leak, the heating power expansion valve valve port will be in closed condition, and the circulating load of refrigeration system is zero, and the refrigeration system for relying on the return-air cooling compressor will cause compressor damage.
Summary of the invention
The purpose of this utility model provides a kind of reasonable in design, simple in structure, behind thermostatic expansion valve bellows temperature-sensitive system leak, still can guarantee the heating power expansion valve of compressor proper functioning.
Heating power expansion valve of the present utility model, form by bellows temperature-sensitive system, valve body, conical valve opening, cone plug, cone plug axial bore, balance spring etc., the top end diameter that it is characterized in that cone plug is to being provided with aperture, and aperture is connected with the cone plug axial bore.
Description of drawings
Fig. 1 is the embodiment of the utility model in two-way heating power expansion valve.
Fig. 2 is the refrigerating system figure of heat pump type air regulator.
Shown in Figure 1:
1-bellows temperature-sensitive system, 2-valve body, the conical valve opening of 2-1-, 3-cone plug, 3-1-cone plug axial bore, 3-2-aperture, 4-balance spring.
Shown in Figure 2:
The 21-compressor, 22-four-way electromagnetic reversing valve, 23-outdoor heat converter, 24-two-way heating power expansion valve, 25-indoor heat converter.
Embodiment
Refrigeration system by embodiment shown in Figure 1 and heat pump type air regulator shown in Figure 2:
Under cooling condition, compressed machine 21 is collapsed into the high pressure-temperature gaseous refrigerant, by four-way electromagnetic reversing valve 22 inlet chamber outer heat-exchangers 23, carry out becoming high normal pressure and temperature liquid refrigerant after the heat exchange with outdoor air and enter two-way heating power expansion valve 24, throttling step-down therein becomes the low-pressure low-temperature liquid refrigerant, the low-pressure low-temperature liquid refrigerant absorbs indoor air in indoor heat converter 25 heat of vaporization becomes low-pressure gaseous refrigerant, get back to compressor 21 through four-way electromagnetic reversing valve 22, finish refrigeration cycle.
When the bellows temperature-sensitive system 1 of two-way heating power expansion valve 24 does not leak, the pressure P 1 of temperature sensing agent in the bellows temperature-sensitive system 1, be in state of equilibrium with back pressure P2 and balance spring force P3, be P1=P2+P3, two-way heating power expansion valve 24 remains on a certain aperture, be in normal working, circular cone annular pass and cone plug axial bore 3-1 and the aperture 3-2 passage throttling step-down that form of high normal pressure and temperature liquid refrigerant between conical valve opening 2-1 and cone plug 3 becomes the low-pressure low-temperature liquid refrigerant.
When the bellows temperature-sensitive system 1 of two-way heating power expansion valve 24 takes place to leak, the pressure P 1 of temperature sensing agent is zero in the bellows temperature-sensitive system 1, under the effect of balance spring power P3, cone plug 3 moves up, until the circular cone annular pass of closing between conical valve opening 2-1 and the cone plug 3, this moment, high normal pressure and temperature liquid refrigerant still can be by the passage throttling step-down of cone plug axial bore 3-1 and aperture 3-2 formation, make refrigeration system still have certain circulating load, guarantee that compressor 21 still can proper functioning under cooling condition.
Under heating condition, although refrigeration agent is a reverse flow, but working principle is identical with cooling condition, when the bellows temperature-sensitive system 1 of two-way heating power expansion valve 24 takes place to leak, the passage throttling step-down that high normal pressure and temperature liquid refrigerant oppositely forms by cone plug axial bore 3-1 and aperture 3-2, make refrigeration system still have certain circulating load, guarantee that compressor 21 still can proper functioning under heating condition.
Claims (1)
1. heating power expansion valve, form by bellows temperature-sensitive system (1), valve body (2), conical valve opening (2-1), cone plug (3), cone plug axial bore (3-1), balance spring (4) etc., the top end diameter that it is characterized in that cone plug (3) is to being provided with aperture (3-2), and aperture (3-2) is connected with cone plug axial bore (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116587U CN201391676Y (en) | 2009-03-30 | 2009-03-30 | Thermal expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116587U CN201391676Y (en) | 2009-03-30 | 2009-03-30 | Thermal expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391676Y true CN201391676Y (en) | 2010-01-27 |
Family
ID=41598501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920116587U Expired - Lifetime CN201391676Y (en) | 2009-03-30 | 2009-03-30 | Thermal expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391676Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852307B (en) * | 2009-03-30 | 2011-09-28 | 浙江春晖智能控制股份有限公司 | Thermostatic expansion valve |
| CN103375951A (en) * | 2012-04-28 | 2013-10-30 | 浙江三花股份有限公司 | Thermostatic expansion valve with unilateral control function |
| CN104696557A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航***工程研究所 | Pressure adjuster |
| CN105822770A (en) * | 2015-01-09 | 2016-08-03 | 艾默生环境优化技术(苏州)有限公司 | Two-way thermal expansion valve |
| US9631850B2 (en) | 2012-04-28 | 2017-04-25 | Zhejiang Sanhua Co., Ltd. | Thermal expansion valve with one-way control function |
-
2009
- 2009-03-30 CN CN200920116587U patent/CN201391676Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852307B (en) * | 2009-03-30 | 2011-09-28 | 浙江春晖智能控制股份有限公司 | Thermostatic expansion valve |
| CN103375951A (en) * | 2012-04-28 | 2013-10-30 | 浙江三花股份有限公司 | Thermostatic expansion valve with unilateral control function |
| US9631850B2 (en) | 2012-04-28 | 2017-04-25 | Zhejiang Sanhua Co., Ltd. | Thermal expansion valve with one-way control function |
| CN104696557A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航***工程研究所 | Pressure adjuster |
| CN104696557B (en) * | 2013-12-04 | 2017-03-01 | 上海宇航***工程研究所 | A kind of pressure regulator |
| CN105822770A (en) * | 2015-01-09 | 2016-08-03 | 艾默生环境优化技术(苏州)有限公司 | Two-way thermal expansion valve |
| CN105822770B (en) * | 2015-01-09 | 2019-10-29 | 艾默生环境优化技术(苏州)有限公司 | Two-way thermal expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100127 Effective date of abandoning: 20090330 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100127 Effective date of abandoning: 20090330 |
|
| DD01 | Delivery of document by public notice |
Addressee: Luo Panpan Document name: Notification that Application Deemed not to be Proposed |