CN101650102A - Heating power expansion valve - Google Patents
Heating power expansion valve Download PDFInfo
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- CN101650102A CN101650102A CN200810131392A CN200810131392A CN101650102A CN 101650102 A CN101650102 A CN 101650102A CN 200810131392 A CN200810131392 A CN 200810131392A CN 200810131392 A CN200810131392 A CN 200810131392A CN 101650102 A CN101650102 A CN 101650102A
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- bar
- expansion valve
- heating power
- spherical spool
- power expansion
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Abstract
The invention provides a heating power expansion valve. The head of a gas tank acting according to a cooling medium pressure and a temperature is arranged on a valve body; a ball valve core contactingan orifice is driven according to the action of the head of the gas tank; the orifice is arranged in the valve body; a rod is arranged between the ball valve core and the head of the gas tank; the end face of the rod connected with the ball valve core is provided with a concave part; and the ball valve core is connected with and fixed in the concave part. When the ball valve core is welded with the end face of the rod, the heating power expansion valve can implement the welding correctly when the ball valve core and the central axis of the rod are easy to be consistent; besides, the slope ofthe rod can be restricted; furthermore, the ball valve core can be driven accurately based on the stable action of the rod.
Description
Technical field
The relevant heating power expansion valve of the present invention, particularly relevant a kind of control are sent to the cold medium flux in the evaporimeter of freeze cycle and make the heating power expansion valve of the heat insulation expansion of refrigerant.
Background technology
Expansion valve of a great variety, general comparatively widely used expansion valve is to make the valve body switch motion according to the low pressure refrigerant temperature and pressure that evaporimeter is sent; In the way of the high pressure refrigerant flow that the high pressure refrigerant that is sent to evaporimeter passes through, dispose relative formation throttling valve seat orifice and with the upstream side subtend.
This expansion valve by the corresponding action of low pressure refrigerant temperature and pressure sent with evaporimeter air tank head and at the axis direction bar freely of advancing and retreat, make valve body carry out switch motion.
But be sent to the high pressure refrigerant of expansion valve, owing to some reasons, at upstream side pressure oscillation take place sometimes, its pressure oscillation conveys to expansion valve with the high pressure refrigerant as medium.
By passing on, when spool was spherical spool, spool might produce with bar and separate, and when producing separation, the phenomenon of contact lever and declutcher control lever then might appear in spool, or the position of spool produces skew.
Thereby the action of spool occurs unstable, produces vebrato, and then becomes the reason that heating power expansion valve produces noise.
In order to suppress vebrato or to prevent the root that noise produces, the Patent Document 1 that the spy opens flat 11-182984 communique discloses the structure that a kind of spherical spool and bar weld mutually.
In addition, the Patent Document 3 of the Patent Document 2 of Te Kaiping 9-257341 communique and Te Kai 2001-01107 communique also discloses a kind of when spherical spool contacts with the end face of bar respectively, the contact of bar lower end connects the position by forming cone shape recess and make valve body be pressed into the structure in the recess and valve body being constrained in structure in the recess.
But, the heating power expansion valve of above-mentioned Patent Document 1, when the end face of bar welded mutually with spherical spool, the corresponding to center of the central shaft of spherical spool and bar was difficult to control, thereby might produce the problem that is difficult to correct welding.
Moreover, the heating power expansion valve that described Patent Document 2 and Patent Document 3 are showed, though consider the location of above-mentioned center, about making spherical spool be fixed on the bar this point then not consider by welding spherical spool and bar.
Summary of the invention
The objective of the invention is provides a kind of heating power expansion valve for addressing the above problem, when spherical spool welds mutually with rod end surface, can the central shaft of spherical spool and bar than be easier to obtain consistent in, the also above-mentioned welding of enforcement that can be correct; In addition, also can suppress the inclination of bar; Moreover, also can carry out the accurate driving of spherical spool based on the operating stably of bar.
In order to reach described purpose, a kind of heating power expansion valve provided by the invention, gas tank head according to refrigerant pressure and temperature action is arranged on the valve body, according to the action of gas tank head drive with throttle orifice join from spherical spool, throttle orifice is arranged in the described valve body, is provided with bar between described spherical spool and the described gas tank head; The end face of the described bar that is connected with described spherical spool is provided with recess, and described spherical spool is fastened in the described recess.
One preferred embodiment in, described bar has the end face that forms described recess inclined plane.
One preferred embodiment in, the inclined plane that is formed on described recess is the angle of 90 °～120 ° of scopes.
According to such scheme, the present invention is significant with respect to the effect of existing structure: heating power expansion valve of the present invention, spherical spool is owing to be arranged in the recess that is provided with on the end face of bar, and be fixed on the corresponding to central shaft of the central shaft of bar on, so even the high pressure refrigerant produces pressure oscillation, spherical spool does not tilt it by fixing described bar, thereby prevented with valve body in the contacting of the valve seat inner face that is provided with, and then prevented noise, moreover, by the operating stably of spherical spool also can be correct the control cold medium flux.
In addition, spherical spool since with recess that rod end surface forms in the inclined plane on the surface of spherical spool contact fixingly, be configured in the recess so spherical spool can be stable.
Moreover the inclined plane is owing to be the angle of 90 °～120 ° of scopes, so the angle of the angle of this scope with below 90 ° the time compared, the end face of bar can be not impaired, and recess can be set; In addition, the angle of the angle of its scope with more than 120 ° the time compared, and the spherical spool in the recess instability can not occur, can realize that therefore the axle center of the central shaft of spherical spool and bar is consistent.
Thereby spherical spool can be fixed in the recess set on the end face of bar fully.This shows, do not need significantly to change the formation of heating power expansion valve, just spherical spool can be fixed in the recess set on the end face of bar, and then reach the effect that suppresses the heating power expansion valve noise.
Description of drawings
Fig. 1 is the longitudinal section of the heating power expansion valve of embodiment of the present invention 1.
Fig. 2 is the enlarged drawing of the embodiment king-rod of Fig. 1.
Fig. 3 is the part enlarged drawing of Fig. 2 king-rod.
The specific embodiment
Below, with reference to the embodiment of graphic detailed description heating power expansion valve of the present invention.
Fig. 1 is the heating power expansion valve 10 of the present invention's the 1st embodiment.For example, be useful in the freeze cycle of air conditioning for automobiles.Fig. 1 is the heating power expansion valve longitudinal section; Among Fig. 11 is evaporimeter, and 2 is compressor, and 3 is condenser, and 4 is liquid reservoir; The formation of freeze cycle comprises: the inlet side end 12a of formed low pressure refrigerant stream 12 on the valve body 11 of formation expansion valve 10, link to each other with the outlet of evaporimeter 1, and the outlet side end 13a of refrigerant flow 13 links to each other with the import of evaporimeter 1; And the outlet side end 12b of low pressure refrigerant stream 12 links to each other with the import of compressor 2, the import of condenser 3 links to each other with the outlet of compressor 2, the outlet of condenser 3 links to each other with the import of liquid reservoir 4, and the outlet of liquid reservoir 4 links to each other with the inlet end 13b of high pressure refrigerant flow 13.
Low pressure refrigerant stream 12 and high pressure refrigerant flow 13 are parallel to each other and form, and its vertical through hole 14 connects between low pressure refrigerant stream 12 and high pressure refrigerant flow 13.In addition, lead to outer opening portion from low pressure refrigerant stream 12 temperature-sensitive chamber 30 is installed.
The middle part branch of high pressure refrigerant flow 13 is formed with the tiny throttle orifice 15 of sectional area of circular section shape, and the mouth limit that is formed on the upstream side peristome of the throttle orifice 15 on the same axis with through hole 14 forms taper valve seat 21.And dispose on the valve seat 21 from the spool 20 of upstream side and throttle orifice 15 subtends.
In addition, spool 20 forms spherical spool, and removable in the direction that connects from valve seat 21, the gap portion between valve body 20 and the valve seat 21 is the restriction of high pressure refrigerant flow 13, arrives the refrigerant of the heat insulation expansion of flowing in the stream of downstream side of evaporimeter 1 by its restriction.
Mark 18 is for being screwed on the adjusting nut that is used for regulating compression helical spring 17 pretightning forces on the valve body 11, and mark 19 is the O shape circle between sealed high pressure refrigerant flow 13 and the outside.
The bar 23 of the formation drive link that inserts in the through hole 14, advance and retreat are arranged on axis direction freely, and its lower end is by the fixing described spherical spool 20 of welding.In addition, pass through between the internal face of throttle orifice 15 in order to make refrigerant, bar 23 is compared carefully with the internal diameter of throttle orifice 15, and with throttle orifice 15 arranged coaxial almost.
Therefore, spherical spool 20 is pushed to the opposite direction of compression helical spring 17 pretightning forces by bar 23, and when its spherical spool 20 breaks away from valve seat 21, the flow path area of high pressure refrigerant flow 13 is just big more.Therefore, the flow path area of high pressure refrigerant flow 13 can be according to the connecing from changing of spherical spool, thereby the high pressure coolant quantity that supplies to evaporimeter 1 also changes.
Mark 40 among Fig. 1 is a bolt hole.
Described bar 23 is that the stainless steel material of 6.4mm～3.2mm forms by diameter for example.
Be formed on the inclined plane angle of the described recess 231 of formation of bar 23 lower surfaces,, can make the lower surface of bar 23 not only can be not impaired, and the lower surface of bar 23 be easier that described recess 231 is set by forming more than 90 °.
Be arranged on the inclined plane of the recess 231 of bar 23 lower surfaces, by forming the angle more than 120 °, when spherical spool 20 is configured in the recess 231, can avoids the instability problem of its configuration, thereby can realize the purpose of the spherical spool 20 of stable configuration in the recess 231.And then the central shaft of spherical spool 20 and bar 23 forms consistent, in the set recess 231 in the lower surface that is fixed on bar 23 that described spherical spool 20 can be stable.
As shown in Figure 2, spherical spool 20 for example is the stainless steel steel ball of diameter 0.8mm, is inserted in the recess 231 of bar 23, is connected with the inclined plane of recess 231, for example fixes by spot welding.In addition, mark 232 is the welding position.Illustrated the structure in the formed recess 231 on the inclined plane that spherical spool 20 is fixed on 90 ° of angles among Fig. 2.
Be made of as can be known above-mentioned, spherical spool 20 in the formed recess 231, is fixed owing to pass through the inclined plane, so can guarantee bar 23 and the corresponding to connection status of spherical spool 20 central shafts on the lower surface of bar 23.Thereby when spherical spool 20 welded mutually with bar 23, enforcement welding position that can be correct can not departed from.Therefore, heating power expansion valve 10 shown in Figure 1, owing to be provided with the bar 23 and the spherical spool 20 of correct enforcement solder bond, so according to variation of refrigerant pressure and cold medium flux etc., even the vibration that spherical spool 20 produces transverse direction, spherical spool 20 can be prevented the inclination of stopping bar 23 by fixing with bar 23, has avoided the inner face contacted problem of bar 23 with throttle orifice 15.
Final heating power expansion valve of the present invention can realize preventing that heating power expansion valve 10 from producing the flow of noises and the correct spherical spool 20 of control.
Temperature-sensitive chamber 30, diaphragm 32 air-tightness of being made up of thick sheet metal system shell 31 and flexible metal making sheet are surrounded, metal system diaphragm supporting disk 33 central portion and disposing below diaphragm 32.
Be filled with in the temperature-sensitive chamber 30 and refrigerant flow 12, the 13 interior identical or kin saturated vapor state of the refrigerant character gases that flow, end socket 34 is passed through and obturation in the filled hole that gas charge is used.Mark 36 encloses with O shape for sealing.
Be embedded in the upper surface in the central portion below the diaphragm supporting disk 33 from inserting, the rod 37 below extending vertically up to passes in the low pressure refrigerant stream 12, and the upper surface of its other end and bar 23 quite connects.
Mark 39 is used the hole for the pressure that makes face portion in the diaphragm 32 and low pressure refrigerant stream 12 identical all pressures; Mark 24 encloses with O shape in the sealing of excellent 37 peripheries to the coolant leakage device of low pressure refrigerant stream 12 for preventing high pressure refrigerant flow 13.
This has the heating power expansion valve 10 of above-mentioned formation, when the low pressure refrigerant temperature that flows in the low pressure refrigerant stream 12 descends, pressure in the temperature-sensitive chamber 30 descends, diaphragm 32 is to the 30 inboard displacements of temperature-sensitive chamber, follow its displacement, diaphragm supporting disk 33 is because to the axis direction displacement that breaks away from bar 23, so bar 23 moves by compression helical spring 17.Thereby spherical spool 20 is to valve seat 21 side shiftings, and the flow path area of high pressure refrigerant diminishes, and has therefore reduced the cold medium flux that is sent in the evaporimeter 1.
When the low pressure refrigerant temperature that flows in the low pressure refrigerant stream 12 rises, according to above-mentioned opposite action,, valve body 20 breaks away from valve seat 21 because being influenced by bar 23, and the flow path area of high pressure refrigerant enlarges, so increased the high pressure cold medium flux that is sent in the evaporimeter 1.
As mentioned above, the spherical spool 20 that moves according to the action of temperature-sensitive chamber 30 and bar 23, the high pressure coolant quantity in the evaporimeter 1 is sent in the corresponding control of temperature of the low pressure refrigerant of sending with evaporimeter 1.
But be sent to the high pressure refrigerant in the expansion valve 10, owing to some reasons at upstream side pressure oscillation might take place, its pressure oscillation is communicated to expansion valve 10 with the high pressure refrigerant as medium.
The heating power expansion valve of embodiment of the present invention, as mentioned above, even passed on the pressure oscillation of high pressure refrigerant, spherical spool 20 is owing to the contact site in the formed cone shape recess 231 on the lower surface that is fixed on bar 23, so by fixing of bar 23, can avoid bar 23 and contact, thereby can realize the stable of spherical spool 20, carry out correct flow-control with the inner face that connects discharge orifice 15.
Claims (3)
1. heating power expansion valve, gas tank head according to refrigerant pressure and temperature action is arranged on the valve body, according to the action of gas tank head drive with throttle orifice join from spherical spool, throttle orifice is arranged in the described valve body, is provided with bar between described spherical spool and the described gas tank head; It is characterized in that: the end face of the described bar that is connected with described spherical spool is provided with recess, and described spherical spool is fastened in the described recess.
2. heating power expansion valve as claimed in claim 1 is characterized in that: described recess is formed with the inclined plane.
3. heating power expansion valve as claimed in claim 2 is characterized in that: described inclined plane is 90 °～120 ° angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810131392A CN101650102A (en) | 2008-08-11 | 2008-08-11 | Heating power expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810131392A CN101650102A (en) | 2008-08-11 | 2008-08-11 | Heating power expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101650102A true CN101650102A (en) | 2010-02-17 |
Family
ID=41672393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810131392A Pending CN101650102A (en) | 2008-08-11 | 2008-08-11 | Heating power expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101650102A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620491A (en) * | 2011-01-31 | 2012-08-01 | 浙江三花股份有限公司 | Refrigerating system and thermoexpension valve thereof |
-
2008
- 2008-08-11 CN CN200810131392A patent/CN101650102A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620491A (en) * | 2011-01-31 | 2012-08-01 | 浙江三花股份有限公司 | Refrigerating system and thermoexpension valve thereof |
| CN102620491B (en) * | 2011-01-31 | 2016-06-01 | 浙江三花股份有限公司 | Refrigeration system and heating power expansion valve thereof |
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| C06 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG SANHUA AUTOMOBILE COMPONENTS CO., LTD. Free format text: FORMER OWNER: ZHEJIANG SANHUA AUTOMOBILE CONTROL SYSTEM CO., LTD. Effective date: 20110429 |
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Free format text: CORRECT: ADDRESS; FROM: 310018 SANHUA INDUSTRIAL PARK, NO. 60, STREET 21, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, HANGZHOU CITY, ZHEJIANG PROVINCE TO: 310018 NO. 60, STREET 21, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, HANGZHOU CITY, ZHEJIANG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20110429 Address after: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 21 Avenue, No. 60 Applicant after: Zhejiang Sanhua Automobile Components Co., Ltd. Address before: 310018 three flower Industrial Park, No. 21, 60 Avenue, Hangzhou economic and Technological Development Zone, Zhejiang Applicant before: Zhejiang Sanhua Auto Control System Co., Ltd. |
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 301 Applicant after: Zhejiang Sanhua Auto Parts Co.,Ltd. Address before: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 21 Avenue, No. 60 Applicant before: Zhejiang Sanhua Auto Parts Co.,Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100217 |