CN1126890C - Valve for overhauling air conditioner - Google Patents
Valve for overhauling air conditioner Download PDFInfo
- Publication number
- CN1126890C CN1126890C CN97104927A CN97104927A CN1126890C CN 1126890 C CN1126890 C CN 1126890C CN 97104927 A CN97104927 A CN 97104927A CN 97104927 A CN97104927 A CN 97104927A CN 1126890 C CN1126890 C CN 1126890C
- Authority
- CN
- China
- Prior art keywords
- valve
- nut
- air conditioner
- hole
- valve rod
- 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 - Fee Related
Links
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000012856 packing Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010719 annulation reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/504—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating means being rotable, rising, and having internal threads which co-operate with threads on the outside of the valve body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
- F16K31/602—Pivoting levers, e.g. single-sided
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
A service valve having a high safety characteristic in which when a valve stem is operated, the stem can be operated without removing a cap nut, a caulking step of a main body of the valve can be eliminated and the valve stem is prevented from coming off. A truncated-cone-like tapered part 14 is arranged at an outer circumferential edge at a top part of a valve stem 13 provided with a hexagonal hole 19 for rotating operation at a central part of an upper portion. An inversely truncated-cone-like tapered part 9 corresponding to the -shaped and tapered part 14 is arranged at an inner circumferential edge of the upper end of a main body of the valve to which the valve stem 13 an screwed. A through hole 22 is arranged at the center of an upper wall of a cap nut 20 screwed into the upper part of the main body of the valve and at the same time the outer circumferential part of the through hole 22 at the bottom surface of the top wall is provided with a ring-shaped protrusion 23 in contact with over both -shaped and tapered part 14 and the inversely truncated-cone-like tapered part 9.
Description
Technical field
The present invention relates to a kind of service valve air conditioner, that can switch on and off a refrigerant circuit that is used for,
Background technique
At present, known a kind of Japanese utility model application publication number (KOKAI) by the present patent application people application is a kind of as the traditional service valve that is used for air conditioner for the service valve that is used for air conditioner that No.4-43773 disclosed.
This service valve has a kind of structure as shown in Figure 3, and it comprises:
One valve body part 8, described valve body comprise that partly one is positioned at the fluid inlet 2 on its bottom, have a valve seat 1 on the top of described fluid inlet; One valve chamber or lobe chamber 3 on described valve seat is formed with an internal thread 4 on the inner peripheral wall of described valve chamber or lobe chamber; One is formed on the last hole 5 of described valve chamber or top, lobe chamber; One is formed on the FLUID TRANSPORTATION mouth 6 and the test hole 7 on the next door, top of described valve chamber or lobe chamber 3; And
One valve rod 13, described valve rod mat forms the outside thread 11 on the part of cydariform therebetween and is screwed in the internal thread 4 of described valve chamber or lobe chamber 3, and it comprises that one is used for sealing the described valve body 10 that is located at the fluid inlet 2 on its lower end, also can under pressure, keep around one mounted thereto circumference and the contacted O shape circle 12 of an inner circumference wall in last hole 5, one is formed on the hex shaped groove 19 at its top center place, one is formed on the groove 15 of the above valve rod top of inner circumference wall in hole 5, one has all ends and is arranged on annulation 16 and in the described groove and is positioned at packing part 17 on the described upper circumferential edge that goes up the hole.
In order to prevent that foreign matter from entering inside by the described hole 5 of going up, described service valve normally seals with the nut 20 of a hexagonal axis shape, be screwed on the top cover of described valve body part 8 over top as it, so-called metallic seal forms by screwing described nut 20, and the outer circumferential edges on the top that protrudes out thing 21 and described valve body part 8 that is formed on the upper inside wall of described nut 20 is contacted.
Therefore, this service valve need disassemble nut from valve body part 8, and place the hex wrench in the described hex shaped groove 19 to rotate described valve rod with one, could after being connected in an air conditioner, refrigeration agent be supplied to described delivery port 6 by fluid inlet 2 with pipe.If described valve rod 13 has revolved head in this step, described valve rod 13 will eject the hole 5 on described under the effect of injection of refrigerant pressure.Therefore, described annulation 16 with all ends is installed in the described inner circumference wall of going up hole 5 and keeps engagement with an edge part 18 of described valve rod 13, limit moving up of described valve rod 13 thus, described packing part 17 is formed on the described upper circumferential edge to improve Security.
Above-mentioned this traditional service valve needs annoying operation to regulate the opening of a valve, because described nut 20 must be disassembled, and must place the described hex shaped groove 19 interior hex wrench that are formed on its top to rotate described valve rod 13 with one, and after finishing described adjusting operation, must tighten described nut 20 with the moment of a pre-sizing.
Owing to may have the inside that a high pressure puts on described service valve, thereby the ejection phenomenon that can produce described valve rod 13 under a kind of like this internal high pressure power may produce danger, and therefore the upper limb of described valve body part 8 has described packing part 17 and to prevent described valve rod 13 the ejection phenomenon takes place in normal operation.But behind described valve rod complete opening, the breaking strength of described service valve depends on shape before the packing of described valve body part and the variation that is taken place to a great extent in the packing step.
In addition, when described valve rod complete opening, if with the described valve body part of a big torque operation, described packing part 17 is easily deformable or split.In order to prevent the variation of this distortion or minimizing packing, must thicken the packing precision of described packing part 17 or raising valve body part or before packing, improve machining accuracy.Improve precision or take these measures to need strict control and higher manufacture cost.
In addition, described service valve is to be used in the refrigerant circuit of air conditioner, and normally the tightness of described refrigerant circuit is checked unloading lower nut 20 and valve rod 13 opened fully.Because in this inspection, the tightness of described valve rod only is to be kept by an O shape circle (the O shape circle that rubber is made) of installing within it, therefore in the process of carrying out airtight test, removable being sealed with of utilizing described O shape circle to form has temporary transient, a spot of leakage phenomenon, described airtight test carries out when described valve rod is remained on complete opening, though described service valve is designed to form a metallic seal and is to use for a long time when it is not worked.Though this small leakage phenomenon is not the problem that occurs owing to service valve self,, this small leakage phenomenon can become the reason with the judgement of making the mistake property of checking apparatus.
Summary of the invention
Therefore, a purpose of the present invention is to provide a kind of service valve, it construct can operating valve lever but do not need to unload lower nut, can save valve body is partly carried out the step of packing and nut is played preventing the effect that valve rod ejects.
According to the present invention, above-mentioned purpose is achieved in that provides a kind of service valve that is used for air conditioner, it comprises a valve rod, described valve rod has one and is positioned at its top center place, be used for rotating the hex shaped groove of described valve rod, an and conical section that is positioned on the outer circumferential edges at top, one valve body part, described valve rod is screwed in the described valve body part, described valve body partly have one with described conical section corresponding, be positioned at the inverted cone part on the inner circumferential edge at its top, and one by on the top that is screwed on described valve body part, be used for covering the nut of described valve body part, described nut has a through hole that is positioned at a roof center, and one be formed on the lower surface of described roof, the excircle part ring-type on every side that is positioned at described through hole protrudes out thing, and described ring-type protrudes out thing on described cone and inverted cone.
Service valve of the present invention helps the opening and closing of valve, just can operating valve lever because it does not need to unload the nut that constitutes a metallic seal, and when the valve rod complete opening,, therefore refrigeration agent is leaked owing to form described metallic seal between nut and the valve rod.
In addition, described service valve does not need to carry out the packing operation, because the top of described valve body part does not have the anxiety of making variation and can have the breaking strength of enhancing when described valve rod complete opening.
One outer peripheral portion of described nut is preferably circular, and has a plurality of concave portions that are used for rotating described nut.
The dust-proof cover that best, that described nut has is one dismountable, be made of plastics.
From below in conjunction with the specific descriptions of accompanying drawing to preferred embodiment of the present invention, other purpose of the present invention and advantage will become more clear.
Description of drawings
Fig. 1 is the longitudinal sectional view of service valve of the present invention;
Fig. 2 is a plan view of having removed the service valve of the present invention of dust-proof cover; And
Fig. 3 is the longitudinal sectional view of traditional service valve.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described.
Service valve of the present invention has a basic structure identical substantially with traditional service valve.This basic structure has been shown in Fig. 1 and Fig. 2, wherein, be arranged in the main valve member 8 be one its top have a valve seat 1 and be arranged on a bottom fluid inlet 2, one the valve chamber on the described valve seat or lobe chamber 3, be formed on internal thread 4, on the inner circumferential surface of described valve chamber or lobe chamber 3 be formed on described valve chamber or the lobe chamber 3 on hole 5, and the FLUID TRANSPORTATION mouth 6 and the test hole 7 that are formed on the top avris of described valve chamber or lobe chamber 3; Be arranged in described valve chamber or the lobe chamber 3 is a valve rod 13, described valve rod has that a valve body 10, that is positioned at its lower end forms that cydariform is therebetween partly gone up and the outside thread 11 that is meshed with described internal thread 4, one disposed thereon excircle around and the O shape that can keep under pressure contact with the described inner circumference of going up hole 5 enclose 12, an and hex shaped groove 19 that is formed on its top center place; One nut 20 is screwed on the top of described valve body part 8, as depicted in figs. 1 and 2.The top of the top of described valve body part 8, valve rod 13 and nut 20 are to make up with following correlation:
Be specifically described in conjunction with Fig. 1, be formed on the inner circumferential edge at described valve body part 8 tops is an inverted cone 9, thereby be formed on the inner circumferential edge at described valve rod 13 tops be one with the described inverted cone 9 corresponding cones 14 that when described valve rod 13 is opened fully, can form a V-shaped groove, be formed on described nut 20 a roof center be a through hole 22, the diameter of described through hole is greater than the diameter that is formed on the hex shaped groove in the described valve rod 13, be formed on described through hole 22 around to be positioned on the bottom surface of described roof be that a ring-type on described inverted cone 9 and the cone 14 protrudes out thing 23.
External form as for nut 20, it can have a circular cross-section to replace hexagonal section, and a plurality of grooves 24, these grooves are vertically formed and are used for carrying out rotating operation in its excircle, so mat one common wrench or an adjustable spanner can not arbitrarily rotate described nut.
In order to prevent that foreign matter from entering described through hole 22, a described dust-proof cover 25 is arranged, for example, a kind of dust-proof cover that is made of plastics can be installed on the described nut 20 with pulling down.This dust-proof cover 25 can have a zone that is enough to cover nut 20 tops fully or only covers through hole 22.
Because service valve of the present invention has adopted said structure, therefore in that being disassembled, described dust-proof cover 25 do not need to pull down nut 20 when rotating described valve rod 13, when valve rod 13 complete openings, service valve of the present invention can keep tightness by metallic seal, because be formed on cone 14 on described valve rod 13 tops can keep under pressure be formed on nut 20 internal surfaces on the ring-type inner circumferential edge that protrudes out thing 23 contact, and when valve rod 13 unexpectedly is unscrewed, can prevent that valve rod 13 from ejecting from valve body part 8.
In addition, service valve of the present invention does not worry that nut 20 can be disassembled carelessly by the babe in the wood, because nut 20 is configured to have a circular cross-section, therefore can not it be unscrewed with a common wrench or an adjustable spanner.
The present invention can also have a lot of different, do not deviate from the embodiment of spirit of the present invention and protection domain.Should be understood that: the present invention is not subjected to the restriction of the specific embodiment described in the specification, and protection scope of the present invention should be determined by appending claims.
Claims (6)
1. service valve that is used for air conditioner, it comprises:
One valve rod, described valve rod have the hex shaped groove that is positioned at its top center place, is used for rotating described valve rod, and a conical section that is positioned on the outer circumferential edges at top;
One valve body part, described valve rod are screwed in the described valve body part, and described valve body has an inverted cone part, and this inverted cone part is corresponding with the conical section on the inner circumferential edge that is positioned at the valve rod top; And
One by on the top that is screwed on described valve body part, be used for covering the nut of described valve body part, described nut has a through hole that is positioned at a roof center, and one be formed on the lower surface of described roof, the ring-type that is positioned at around the excircle part of described through hole protrudes out thing, the described thing that protrudes out is on described cone and described inverted cone.
2. the service valve that is used for air conditioner as claimed in claim 1 is characterized in that the outer peripheral portion of described nut is circular, and has a plurality of concave portions that are used for rotating described nut.
3. the service valve that is used for air conditioner as claimed in claim 1 is characterized in that, the dust-proof cover that described nut has is dismountable, be made of plastics.
4. the service valve that is used for air conditioner as claimed in claim 1 is characterized in that the diameter of described through hole is greater than the size of described hex shaped groove.
5. the service valve that is used for air conditioner as claimed in claim 3 is characterized in that, described dismountable dust-proof cover covers a upper surface of described nut.
6. the service valve that is used for air conditioner as claimed in claim 3 is characterized in that, described dismountable dust-proof cover only covers described through hole.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP178479/1996 | 1996-06-18 | ||
| JP178479/96 | 1996-06-18 | ||
| JP8178479A JPH109717A (en) | 1996-06-18 | 1996-06-18 | Service valve for room cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1174952A CN1174952A (en) | 1998-03-04 |
| CN1126890C true CN1126890C (en) | 2003-11-05 |
Family
ID=16049210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97104927A Expired - Fee Related CN1126890C (en) | 1996-06-18 | 1997-03-26 | Valve for overhauling air conditioner |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH109717A (en) |
| KR (1) | KR980003105A (en) |
| CN (1) | CN1126890C (en) |
| MY (1) | MY124238A (en) |
| TW (1) | TW501686U (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109717A (en) * | 1996-06-18 | 1998-01-16 | Taiheiyo Seiko Kk | Service valve for room cooler |
| KR100320086B1 (en) * | 1998-12-17 | 2002-04-22 | 박정규 | Prefabricated Culvert Facility |
| US6546952B1 (en) * | 1999-11-02 | 2003-04-15 | Parker-Hannifiin Corporation | Stem cap for air conditioning service valve |
| KR100508117B1 (en) * | 2002-12-30 | 2005-08-18 | 손열삼 | Globe Valve |
| KR200448275Y1 (en) | 2007-09-04 | 2010-03-29 | 김종철 | Structure for connection between disk and stem |
| EP2488775A1 (en) * | 2009-10-15 | 2012-08-22 | Parker-Hannifin Corporation | High flow service valve |
| JP5533999B1 (en) | 2012-12-26 | 2014-06-25 | ダイキン工業株式会社 | Refrigeration unit heat source unit |
| JP5601367B2 (en) * | 2012-12-26 | 2014-10-08 | ダイキン工業株式会社 | valve |
| CN103195932B (en) * | 2013-03-27 | 2015-02-25 | 广东美的制冷设备有限公司 | Check valve for air conditioner pipe control |
| CN103410983A (en) * | 2013-07-18 | 2013-11-27 | 吴江市黎里建兴铸件厂 | Valve |
| CN105805371B (en) * | 2014-12-29 | 2018-09-28 | 浙江三花智能控制股份有限公司 | Valve gear |
| JP6428530B2 (en) * | 2015-08-20 | 2018-11-28 | 三菱電機株式会社 | Switching valve and water heater |
| CN214305495U (en) * | 2020-12-16 | 2021-09-28 | 浙江盾安人工环境股份有限公司 | Stop valve and air conditioning system with same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS637739A (en) * | 1986-06-26 | 1988-01-13 | エーピーブイ ベイカー プロプライエタリー リミテッド | Dough dividing method and machine |
| JPH08135802A (en) * | 1994-11-08 | 1996-05-31 | Sanyo Electric Co Ltd | Service valve of air conditioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0234523Y2 (en) * | 1985-06-05 | 1990-09-17 | ||
| US4899783A (en) * | 1988-09-30 | 1990-02-13 | Whitey Co. | Pinch valve |
| KR970000643Y1 (en) * | 1993-12-27 | 1997-01-30 | 주식회사 유니온금속 | Valve for air conditioner |
| JPH109717A (en) * | 1996-06-18 | 1998-01-16 | Taiheiyo Seiko Kk | Service valve for room cooler |
-
1996
- 1996-06-18 JP JP8178479A patent/JPH109717A/en active Pending
-
1997
- 1997-03-10 MY MYPI97000996A patent/MY124238A/en unknown
- 1997-03-11 TW TW089207396U patent/TW501686U/en unknown
- 1997-03-21 KR KR1019970009716A patent/KR980003105A/en not_active Application Discontinuation
- 1997-03-26 CN CN97104927A patent/CN1126890C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS637739A (en) * | 1986-06-26 | 1988-01-13 | エーピーブイ ベイカー プロプライエタリー リミテッド | Dough dividing method and machine |
| JPH08135802A (en) * | 1994-11-08 | 1996-05-31 | Sanyo Electric Co Ltd | Service valve of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1174952A (en) | 1998-03-04 |
| TW501686U (en) | 2002-09-01 |
| KR980003105A (en) | 1998-03-30 |
| JPH109717A (en) | 1998-01-16 |
| MY124238A (en) | 2006-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |