CN104295780A - Pressure actuated valve - Google Patents
Pressure actuated valve Download PDFInfo
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- CN104295780A CN104295780A CN201410334840.1A CN201410334840A CN104295780A CN 104295780 A CN104295780 A CN 104295780A CN 201410334840 A CN201410334840 A CN 201410334840A CN 104295780 A CN104295780 A CN 104295780A
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- Prior art keywords
- mentioned
- valve
- metal parts
- film metal
- teat
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Classifications
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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
- F16K27/0236—Diaphragm cut-off apparatus
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
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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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
- F16K7/17—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
- Diaphragms And Bellows (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Pens And Brushes (AREA)
Abstract
The invention provides a pressure actuated valve which can inhibit the vibration of a film. The pressure actuated valve (1) is formed by laminating multiple thin film metal parts (51). Each of the multiple thin film metal parts (51) has a ring-shaped plate part (53) and a V-shaped protruding part (54) connected with the inner rim of the plate part (53). A valve opening (16) is opened and closed in correspondence with movement of a center part (C) of the protruding part (54) of the thin film metal part (51) closest to the valve opening (16). During the valve closed period when the valve opening (16) is closed, preset deformation is performed to form a following shape that the center part (C) of the protruding part (54) of the thin film metal part (51A) closest to the valve opening (16) is configured to exceed a position, corresponding to the center part (C), of a turnover motion start position (P1) towards a turnover motion direction side, while the reset part, apart from the center part (C), of the protruding part (54) is configured to be in front of a position corresponding to the part, apart from the center part (C), of the turnover motion start position (P1).
Description
Technical field
The present invention relates to have and by the pressure of fluid, membrane body be out of shape and valve port carried out to the pressure-operated valve of the structure of opening and closing.
Background technique
As shown in figure 11, the pressure-operated valve 801 disclosed in patent documentation 1 has: the seat portion 818 being located at the surrounding of valve port 817; And as the turnover board 823 of membrane body, the central authorities of this turnover board 823 are formed as roughly hemispherical and the pressure that induced action is in plate face and carry out rotary movement with snap-type (being slowly deformed into certain amount of deformation according to pressure, being then deformed into the form of regulation amount of deformation when exceeding this amount of deformation once) and have elasticity.Namely, turnover board 823 is the spring constant (positive spring constant) in direction for returning original shape before certain amount of deformation, then becomes for the spring constant (negative spring constant) to rotary movement Direction distortion to the direction of regulation amount of deformation when exceeding this amount of deformation.This turnover board 823 is configured to, and in the scope of positive spring constant, is out of shape a little in advance with the degree of not carrying out rotary movement and is pressed against seat portion.Thus, the elasticity of turnover board 823 is utilized the middle body of this turnover board 823 to be pressed into seat portion 818 to guarantee valve cutout property.
According to this pressure-operated valve 801, be pressed against seat portion owing to being out of shape a little in advance with the degree of not carrying out rotary movement, therefore, it is possible to realize the action of good snap-type, the good valve characteristic reliably switching open and-shut mode fast can be obtained.
Prior art document
Patent documentation 1: Japanese Unexamined Patent Publication 2002-71037 publication
Summary of the invention
Invent problem to be solved
But in above-mentioned pressure-operated valve 801, because turnover board 823 carries out rotary movement with snap-type, therefore when turnover board 823 has carried out rotary movement, the hydrodynamic pressure accommodated in the valve chamber of this turnover board 823 sharply declines.And, due to the decline of this hydrodynamic pressure, turnover board 823 restores from rollover states, because of this recovery, hydrodynamic pressure in valve chamber raises, turnover board 823 carries out rotary movement again, and therefore there are the following problems: repeat rotary movement and restoring action thereof, flow likely produces the vibration action repeatedly increased and decreased within the short period.
Therefore, problem of the present invention is to provide a kind of pressure-operated valve that can suppress the vibration action of membrane body.
For solving the scheme of problem
The action of inventor of the present invention to membrane body has re-started found that of studying with keen determination, form by carrying out multiple film metal parts of the action of snap-type under being layered in free state and make it be deformed into specific shape (being out of shape in advance) in advance, thus when hydrodynamic pressure puts on membrane body, this membrane body carries out the deformed movement (also become " action of slow motion formula ") corresponding to pressure, this completes the present invention.
In order to solve above-mentioned problem, the invention described in scheme 1 is a kind of pressure-operated valve, valve casing, membrane body, it divides valve chamber together with above-mentioned valve casing, and consists of stacked multiple elastic film metal parts of being out of shape because of the hydrodynamic pressure in this valve chamber, and seat portion, it is located at above-mentioned valve casing, and be formed with the distortion of above-mentioned membrane body and the valve port of opening and closing that cause with above-mentioned hydrodynamic pressure, the feature of above-mentioned pressure-operated valve is, each of above-mentioned multiple film metal parts has annular plate portion, and to be connected integratedly with the inner edge in this annular plate portion overlook rounded shape and bulge into the teat of mountain shape to a direction, be formed as under free state, above-mentioned teat is overall from original shape towards the rotary movement Direction distortion contrary with an above-mentioned direction to when arriving the shape of the rotary movement initial position specified, this teat carries out the rotary movement of snap-type, and above-mentioned teat is with mutually stacked towards unidirectional mode respectively, the periphery of this membrane body is fixed on above-mentioned valve casing to make each teat of above-mentioned multiple film metal parts towards the mode of above-mentioned valve port side by above-mentioned membrane body, the movement correspondingly opening and closing of above-mentioned valve port and the middle body of the teat from the nearest above-mentioned film metal parts of this valve port, when the pent valve closing of above-mentioned valve port, be deformed into following shape in advance, middle body from the teat of the nearest above-mentioned film metal parts of above-mentioned valve port is configured to the position corresponding with this middle body exceeding above-mentioned rotary movement initial position to side, above-mentioned rotary movement direction, and being partly arranged at beyond the middle body of this teat more leans on front than the position corresponding with the part beyond this middle body of above-mentioned rotary movement initial position.
The invention of invention described in scheme 2 according to scheme 1, it is characterized in that, above-mentioned teat possesses with same heart shaped configuration and the multiple component parts connected successively in the radial direction, each of above-mentioned multiple component part is formed as, the degree of crook of radial direction or mutually different from other adjacent above-mentioned component parts relative to the inclined degree in above-mentioned annular plate portion.
The invention of invention described in scheme 3 according to scheme 2, is characterized in that also possessing: the valve body above-mentioned valve port being carried out to opening and closing; And so that with the distortion of above-mentioned membrane body, the mode of the above-mentioned valve port of opening and closing links the columned valve rod of this membrane body and above-mentioned valve body, the diameter of the end face on the above-mentioned diaphragm side of above-mentioned valve rod is less than the diameter being positioned at the above-mentioned component part of the central authorities of the teat from the nearest above-mentioned film metal parts of above-mentioned valve port of above-mentioned membrane body.
Invention described in scheme 4, according to the invention described in any one of scheme 1 ~ 3, is characterized in that, between above-mentioned multiple film metal parts, be filled with incompressible fluid.
Invention described in scheme 5 is according to the invention described in any one of scheme 1 ~ 3, it is characterized in that, the central authorities that at least one from above-mentioned multiple film metal parts removing after the nearest above-mentioned film metal parts of above-mentioned valve port remaining one or more above-mentioned film metal parts states teat are thereon formed with through hole.
Effect of the present invention is as follows.
Invention according to scheme 1, each of multiple film metal parts forming membrane body there is annular plate portion and be connected integratedly with the inner edge in this annular plate portion overlook rounded shape and bulge into the teat of mountain shape to a direction.Each of multiple film metal parts is formed as, under free state, teat is overall from original shape towards the rotary movement Direction distortion contrary with an above-mentioned direction to when arriving the shape of the rotary movement initial position specified, this teat carries out the rotary movement of snap-type.Multiple film metal parts are mutually stacked towards unidirectional mode with each teat.The periphery of this membrane body, in the mode of each teat of multiple film metal parts towards valve port side, is fixed on valve casing by membrane body.The movement correspondingly opening and closing of valve port and the middle body of the teat from the nearest film metal parts of this valve port.And, when the pent valve closing of valve port, be out of shape in advance as follows, middle body from the teat of the nearest film metal parts of valve port is configured to the position corresponding with this middle body exceeding rotary movement initial position to side, rotary movement direction, and the front being partly arranged at the position corresponding with the part beyond this middle body of rotary movement initial position beyond the middle body of this teat.
Like this, i each of multiple film metal parts that () forms membrane body carries out the action of snap-type under free state, these multiple film metal parts stacked and form membrane body, therefore between film metal parts, slip resistance is produced during distortion, (ii) and, when the valve closing of valve port, middle body from the teat of the nearest film metal parts of this valve port is configured to exceed rotary movement initial position in advance, therefore the middle body of each teat of multiple film metal parts becomes state contacting one another, the slip resistance produced between film metal parts becomes large further, inhibit snap-type action.Therefore, by suppressing each snap-type action of multiple film metal parts, the deformed movement (action of slow motion formula) corresponding to hydrodynamic pressure is become as membrane body, therefore compared with the action of snap-type, can the pressure oscillation sharply of check valve indoor, can vibration action be suppressed.
(iii) in addition, if because the slip resistance between film metal parts inhibits the pressure exceeding regulation, the action of the snap-type be once out of shape, therefore be out of shape by membrane body, even if distortion as each film metal parts is that free state is when then carrying out the degree of action of snap-type, the autologous spring constant of membrane body also can not become negative value, this spring constant become 0 or close to 0 positive value.Therefore, larger amount of deformation can be obtained relative to the change of pressure.Therefore, even if the variable quantity of hydrodynamic pressure is little, membrane body is also out of shape significantly, thus can guarantee larger flow when valve opening.
Invention according to scheme 2, the teat forming multiple film metal parts of membrane body has with same heart shaped configuration and the multiple component parts connected successively in the radial direction, each of these multiple component parts is formed as, the degree of crook of radial direction or mutually different from other adjacent component parts relative to the inclined degree in annular plate portion.Like this, such as, compared with the teat of bending continuously smoothly with entirety semi-spherical shape etc., if each component part is bending shape, then can adjust the degree of crook of each component part independently, or, if each component part is in the upper smooth shape of a direction (such as radial direction), then can adjust the inclined degree relative to annular plate portion independently, thereby, it is possible to adjust in scope by a larger margin the deformation characteristic of the teat be made up of multiple component part.Therefore, it is possible to easily obtain the membrane body of desired deformation characteristic.
Invention according to scheme 3, also possesses: valve body valve port being carried out to opening and closing; And so that with the distortion of membrane body, the mode of opening and closing valve port links the columned valve rod of this membrane body and valve body.Further, the diameter of the end face on the diaphragm side of valve rod is less than the diameter being positioned at the component part of the central authorities of the teat from the nearest film metal parts of valve port of membrane body.Like this, be positioned at the second component part of the central authorities of the teat of film metal parts due to the low easy distortion of rigidity, therefore this second component part easily contacts with other film metal parts, therefore, it is possible to increase surface friction drag.Thereby, it is possible to suppress the action of snap-type further, become the deformed movement (action of slow motion formula) corresponding to hydrodynamic pressure.
Invention according to scheme 4, is filled with incompressible fluid between multiple film metal parts.Like this, even if there is small space between stacked film metal parts, also because the distortion of film metal parts passes to other adjacent film metal parts via incompressible fluid, therefore, it is possible to improve the reactivity relative to the valve opening and closing of hydrodynamic pressure, therefore small pressure is changed to the amount of deformation that also can obtain greatly.
Invention according to scheme 5, at least one from the multiple film metal parts removing forming membrane body after the nearest film metal parts of valve port remaining one or more film metal parts is formed with through hole in the central authorities of its teat.Like this, by changing the shape of this through hole, size or being provided with the quantity etc. of film metal parts of through hole, can adjust in scope by a larger margin the deformation characteristic of membrane body.Therefore, it is possible to easily obtain the membrane body of desired deformation characteristic.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of the pressure-operated valve of embodiments of the present invention.
Fig. 2 is the sectional view of the structure of the membrane body representing Fig. 1.
Fig. 3 (a) is the stereogram of the film metal parts of the membrane body of the Fig. 2 formed, and Fig. 3 (b) is the sectional view of the X-X line along Fig. 3 (a).
Fig. 4 is the figure of the deformation state of the teat of the film metal parts of the membrane body being shown schematically in pie graph 2 when being applied with pressure when being in free state, Fig. 4 (a) represents that teat is in the figure of the original state of initial position, Fig. 4 (b) represents that teat entirety is in the figure of the state of rotary movement initial position, and Fig. 4 (c) represents that teat is in the figure of the state of upturned position.
Fig. 5 is the figure of distortion and the deformed movement in advance of the membrane body schematically showing Fig. 2, Fig. 5 (a) is the figure of state when representing valve closing, Fig. 5 (b) represents that teat entirety is roughly in the figure of the state of rotary movement initial position, and Fig. 5 (c) represents that teat is in the figure of the state of upturned position.
Fig. 6 is the plotted curve schematically showing the relation putting on the hydrodynamic pressure of membrane body and the amount of movement of valve rod.
Fig. 7 is the sectional view (being provided with the structure of through hole in the central authorities of the teat eliminating the film metal parts beyond the film metal parts nearest from valve port) of the structure of the variation of the membrane body representing Fig. 2.
Fig. 8 (a) is the sectional view (having the structure of the second component part bent) of the structure of the 1st variation of the film metal parts representing Fig. 3 recessedly, Fig. 8 (b) is the sectional view (having the structure of the second bending projectedly component part) of the structure of the 2nd variation of the film metal parts representing Fig. 3, Fig. 8 (c) is the sectional view (having the structure of the overall teat of the semi-spherical shape of continuous bend smoothly) of the structure of the 3rd variation of the film metal parts representing Fig. 3, Fig. 8 (d) is the sectional view (having the structure of three component parts) of the structure of the 4th variation of the film metal parts representing Fig. 3.
Fig. 9 is the plotted curve of the relation of the amount of deformation relative to hydrodynamic pressure (amount of movement of the middle body of teat) of the film metal parts representing free state.
Figure 10 is the plotted curve representing the amount of movement of valve rod relative to the relation of the hydrodynamic pressure putting on membrane body.
Figure 11 is the longitudinal sectional view of existing pressure-operated valve.
In figure:
1-pressure-operated valve, 10-valve casing, 16-valve port, 19-seat portion, 25-valve chamber, 30-valve member, 31-valve rod, 32-ball valve (valve body), 40-helical spring, 50, 50A-membrane body, 51, 51A ~ 51G-film metal parts, 52-incompressible fluid, 53-annular plate portion, 54, 54F, 54G-teat, 55, 55G-the first component part, 56, 56D, 56E, 56G-the second component part, 57G-the 3rd component part, 58-through hole, the middle body of C-teat, the initial position of P0-teat, the rotary movement initial position of P1-teat, the upturned position of P2-teat, the initial position of Q0-teat and the position of the valve rod corresponding with rotary movement initial position, the position of the valve rod of Q2-corresponding with the upturned position of teat.
Embodiment
Below, be described with reference to the pressure-operated valve of Fig. 1 ~ Fig. 6 to an embodiment of the invention.
Fig. 1 is the longitudinal sectional view of the pressure-operated valve of embodiments of the present invention.Fig. 2 is the sectional view of the structure of the membrane body representing Fig. 1.Fig. 3 (a) is the stereogram of the film metal parts of the membrane body of pie graph 2, and Fig. 3 (b) is the sectional view of the X-X line along Fig. 3 (a).Fig. 4 is the figure of the deformation state of the teat of the film metal parts of the membrane body being shown schematically in pie graph 2 when being applied with pressure when being in free state, Fig. 4 (a) represents that teat is in the figure of the original state of initial position, Fig. 4 (b) represents that teat entirety is in the figure of the state of rotary movement initial position, and Fig. 4 (c) represents that teat is in the figure of the state of upturned position.Fig. 5 is the figure of distortion and the deformed movement in advance of the membrane body schematically showing Fig. 2, Fig. 5 (a) is the figure of state when representing valve closing, Fig. 5 (b) represents that teat entirety is in the figure of the state of roughly rotary movement initial position, and Fig. 5 (c) represents that teat is in the figure of the state of upturned position.Fig. 6 is the plotted curve of the relation of the amount of movement of the middle body of the teat schematically showing hydrodynamic pressure and these film metal parts putting on film metal parts.In addition, the concept of " up and down " in the following description and corresponding up and down in Fig. 1, represent the relative position relationship of each parts, do not represent absolute position relationship.
As shown in Figure 1, pressure-operated valve 1 possesses valve casing 10, valve member 30, helical spring 40, membrane body 50 and snubber 60.
Valve casing 10 possesses main part 11 and cap portion 20.
Main part 11 such as uses the metal such as brass, stainless steel to be formed as roughly cylindric, possesses first side joint attachment hole 12, second side joint attachment hole 13, valve holding space 14, first side mouth 15, valve port 16, spring housing 17, access 18 and seat portion 19.
First side joint attachment hole 12 is formed in the mode of the side face of break-through main part 11.Second side joint attachment hole 13 is formed in the mode of the end face of downside in the figure of break-through main part 11.The columned space that the end face that valve holding space 14 is formed as upside from the figure of main part 11 stretches out in main part 11.First side mouth 15 is formed as the figure middle and lower part being communicated with first side joint attachment hole 12 and valve holding space 14.Valve port 16 forms the figure middle and lower part being communicated with second side joint attachment hole 13 and valve holding space 14.Second side joint attachment hole 13, valve holding space 14 and valve port 16 configure in the mode coaxial with main part 11.The seat portion 19 that the part of the surrounding of the valve port 16 of main part 11 disseats as the ball valve 32 of valve member 30 described later, take a seat plays function.Spring housing 17 configures coaxially with the mode and this valve holding space 14 of surrounding valve holding space 14, the space of the roughly tubular that the end face being formed as upside from the figure of main part 11 stretches out in main part 11.In other words, spring housing 17 is formed as the deep trouth of ring-type around valve holding space 14.Access 18 is formed as being communicated with above-mentioned first side mouth 15 and spring housing 17.
Be provided with inlet attack 12a at first side joint attachment hole 12, inlet attack 12a is communicated with valve holding space 14 via first side mouth 15.In addition, be provided with outlet connection 13a at second side joint attachment hole 13, the opening end as valve port 16 side of the outlet connection 13a of second side mouth is communicated with valve holding space 14 via valve port 16.Thus, flow into fluid in main part 11 successively by first side mouth 15, valve holding space 14, valve port 16 from inlet attack 12a, flow out from outlet connection 13a.In addition, first side mouth 15 is communicated with spring housing 17 via access 18.Thus, the fluid flowed into from inlet attack 12a passes through first side mouth 15, access 18 successively, flow into spring housing 17.
Cap portion 20 is such as made up of metals such as stainless steels, the lip part 22 possessing roughly cylindric surrounding wall portion 21 and form as one with upper end in the figure of surrounding wall portion 21.Surrounding wall portion 21 is formed as the diameter cylindrical shape roughly the same with the external diameter of valve casing 10 (ring-type), and in its figure, lower end is fixedly installed in upper end portion in the figure of main part 11 by hard soldering.By configuring membrane body 50 described later on lip part 22 overlappingly, cap portion 20 divides the pressure chamber 23 as confined space together with membrane body 50, and this pressure chamber 23 is connected with the valve holding space 14 of main part 11 and forms valve chamber 25.
Valve member 30 have be made up of metals such as stainless steels respectively valve rod 31, as the ball valve 32 of valve body and spring bracket 33.Valve rod 31 is formed as cylindric roughly the same with the internal diameter of the valve holding space 14 of valve casing 10 of external diameter.Valve rod 31 is the upper mode of sliding movement of above-below direction (namely, the axis of main part) can be contained in valve holding space 14 in the drawings.End face above in the figure of valve rod 31 and membrane body described later 50 (specifically, forming the second component part 56 of the teat 54 of the film metal parts 51 of membrane body 50) face contact.In the present embodiment, the diameter of this end face is less than the diameter of the second component part 56 of face contact with it.Ball valve 32 is formed as sphere-like, is fixedly installed in lower end in the figure of valve rod 31.Ball valve 32 together with valve rod 31 in the drawings upper and lower move up, disseat relative to the seat portion 19 of valve casing 10, take a seat, opening and closing is carried out to valve port 16.Spring bracket 33 is formed as circular identical with the external diameter of valve rod 31 of internal diameter, with the flange shape figure middle and upper part being fixedly installed in valve rod 31.
Helical spring 40 and spring housing 17 are contained in this spring housing 17 of valve casing 10 coaxially.Helical spring 40 is configured between the main part 11 (bottom surface of spring housing 17) of valve casing 10 and the spring bracket 33 of valve member 30 with compressive state.Helical spring 40 is by second component part 56 (middle body C) pressing of upper end in the figure of valve rod 31 to membrane body 50 described later.Thus, valve rod 31 follow membrane body 50 distortion in the drawings above-below direction move, be accompanied by this, ball valve 32 disseats relative to seat portion 19, takes a seat.Namely, valve rod 31 is so that with the distortion of membrane body 50, the mode of opening and closing valve port 16 links this membrane body 50 and ball valve 32.
Membrane body 50 such as stacked multiple film metal parts 51 and forming, these film metal parts 51 are made up of metals such as stainless steels, overlook rounded shape and have elasticity.Membrane body 50 is formed with the diameter roughly the same with the external diameter in cap portion 20 by stacked multiple film metal parts 51, and it is overlapping with the lip part 22 in cap portion 20 to be configured to its periphery, blocks the opening of upside in the figure in this cap portion 20.Membrane body 50 divides the pressure chamber 23 as confined space together with cap portion 20.Under the state that the valve rod 31 of valve member 30 is contained in valve holding space 14, this pressure chamber 23 is connected with valve holding space 14 via the spring housing 17 of valve casing 10, access 18 and first side mouth 15.In addition, membrane body 50 utilizes its elastic force to press ball valve 32 by valve rod 31 to seat portion 19 when valve closing.About this membrane body 50 in detail will in hereinafter describe.
Snubber 60 such as uses the metals such as stainless steel to be formed as the flat board overlooking rounded shape of diameter roughly the same with membrane body 50.Snubber 60 configures overlappingly with upside in the figure of membrane body 50, prevents the excessive deformation of membrane body 50.In addition, through hole 61 is formed with at the middle body of snubber 60.
The respective peripheral portion of the lip part 22 in the cap portion 20 of valve casing 10, membrane body 50 and snubber 60 to be interfixed installation in the mode becoming to be integrated by welding.
According to above structure, pressure-operated valve 1 flows into the refrigeration agents (fluid) such as the freon system of such as R410A etc. from inlet attack 12a, and this refrigeration agent applies pressure via first side mouth 15, access 18, spring housing 17 and pressure chamber 23 to membrane body 50.
When this refrigeration agent pressure (hydrodynamic pressure) for below the pressure that presets, membrane body 50 does not carry out the distortion to rotary movement direction (in figure top) side, but utilize membrane body 50 and press ball valve 32 via valve rod 31 to seat portion 19, thus become the valve closing state of valve port closedown.Now, the refrigeration agent flowed into from inlet attack 12a flows into valve holding space 14 from first side mouth 15, but under valve closing state, ball valve 32 close port 16, refrigeration agent can not flow to outlet connection 13a.
On the other hand, the pressure of refrigeration agent uprises, and more than the pressure preset if reach, then membrane body 50 is to rotary movement Direction distortion, and valve rod 31 and ball valve 32 are followed the distortion of membrane body 50 and moved because of the elastic force of helical spring 40.Thus, valve port 16 opens wide, and becomes valve opening state.
Then, the structure of membrane body 50 is described in detail.
As shown in Fig. 2, Fig. 3 (a), (b), membrane body 50 is consisted of the stacked multiple film metal parts 51 overlooking rounded shape that are made up of metals such as stainless steels, and the space between multiple film metal parts 51 is filled with the higher wet goods incompressible fluid 52 of such as ratio of viscosities.In fig. 2, for convenience of explanation, the space between multiple film metal parts 51 is recorded broader, but in the structure of reality, is the small space less than the thickness of film metal parts 51.
Each of multiple film metal parts 51 is formed as identical shape.Possess: overlook in circular annular plate portion 53; And to be connected integratedly with the inner edge in this annular plate portion 53 overlook rounded shape and swell the teat 54 for mountain shape to a direction (be below at Fig. 2 and Fig. 3 (b)).Teat 54 is formed as in not afterburning original shape in roughly semi-spherical shape.In addition, teat 54 possesses: the first component part 55 of the ring-type be connected integratedly with annular plate portion 53; And second component part 56 of overlooking rounded shape to be connected integratedly with the inner edge of the first component part 55.First component part 55 and the second component part 56 are also connected in the radial direction successively with same heart shaped configuration.First component part 55 is formed as bending projectedly laterally in its circumference and radial direction.Second component part 56 is formed as circular plate.Namely, the second component part 56 is formed as, and the degree of crook of radial direction is different from the first component part 55, and also different relative to the inclined degree in annular plate portion 53.Each of multiple film metal parts 51 is configured to teat 54 and protrudes towards the seat portion 19 (namely, valve port 16) of main part 11, and teat 54 is not fixed mutually while mutually stacked, and the state of annular plate portion 53 integration to interfix is installed on the cap portion 20 of valve casing 10.
Film metal parts 51 are formed as, and under free state (state of), teat 54 carries out the rotary movement (action of protrusion direction upset) of snap-type.Fig. 4 (a) ~ (c) schematically shows the rotary movement of this snap-type.Namely, film metal parts 51 are configured to, if apply power gradually to the entirety of teat 54, then teat 54 does not put on the original shape (Fig. 4 (a)) of the initial position P0 of teat 54 towards rotary movement direction (figure top) side distortion (being out of shape in the mode that overhang tails off) from the power from outside, when the shape of rotary movement initial position P1 (Fig. 4 (b)) that this teat 54 bulk deformation specifies to arrival, then carry out rotary movement once, be deformed into upturned position P2 (Fig. 4 (c)).
The rotary movement of the snap-type of this film metal parts 51 carries out with the distortion of teat 54.If be namely set to positive spring constant by from initial position P0 to rotary movement initial position P1, if teat 54 exceedes rotary movement initial position, P1 is out of shape, then the value of spring constant overturns and becomes negative spring constant, carries out rotary movement until upturned position P2.
Multiple film metal parts 51 are mutually stacked and interfixed in annular plate portion 53 under the state being filled with incompressible fluid 52 between which, are integrated thus and become membrane body 50.In the present embodiment, membrane body 50 is formed by stacked two film metal parts.
Be described with reference to the action of Fig. 5 to this membrane body 50.In Figure 5, represent the film metal parts 51 (namely, from the nearest film metal parts 51 of valve port 16) contacted with valve rod 31 with symbol 51A, represent other film metal parts 51 be laminated on film metal parts 51A with symbol 51B.
Membrane body 50 arranges with the state of being out of shape in advance when valve closing.Specifically, as Fig. 5 (a) schematically shown in, under the state that this teat 54 has been out of shape as follows, cap portion 20 is fixed in annular plate portion 53, namely, when ball valve 32 is seated at the valve closing of seat portion 19, the middle body C of the teat 54 of film metal parts 51A is configured to the position corresponding with this middle body C exceeding the rotary movement initial position P1 of these film metal parts 51A to rotary movement direction (in figure top) side, and, being partially configured to beyond the middle body C of this teat 54 more leans on front (Figure below) than the position corresponding with the part beyond middle body C of rotary movement initial position P1.Along with the distortion of film metal parts 51A, other film metal parts 51B stacked with it also becomes the state after distortion.In this state, film metal parts 51A is owing to carrying out rotary movement when its teat 54 entirety reaches rotary movement initial position P1, and therefore only middle body C is configured to exceed rotary movement initial position P1 and does not also carry out rotary movement.For other film metal parts 51B too.
In the present embodiment, the middle body C being configured to the teat 54 of film metal parts 51A is consistent with the second component part 56 of this teat 54.Self-evident, be not limited thereto, the size of middle body C, according to the structure, Pressure characteristics etc. of pressure-operated valve, suitably sets to the scope of 1/5 ~ 1/2 degree of the radius of this teat at the center from teat 54, to play as action effect valve port 16 being carried out to the membrane body of opening and closing.
And, when the valve closing shown in Fig. 5 (a), valve rod 31 is in position Q0, and, if the hydrodynamic pressure putting on membrane body 50 rises gradually from this state, then the part beyond the middle body C of the teat 54 of film metal parts 51A is out of shape gradually towards rotary movement initial position P1, but middle body C remains on this position, valve rod 31 does not move, and rests on position Q0.Then, as shown in Fig. 5 (b), if teat 54 entirety arrives rotary movement initial position P1 substantially, then teat 54 entirety comprising middle body C starts distortion towards rotary movement direction.Now, owing to being laminated with other film metal parts 51B on film metal parts 51A, therefore slip resistance is produced between which, and as described above, owing to there occurs distortion in advance, film metal parts 51A is pressed into other film metal parts 51B forcefully, and slip resistance becomes large further.Therefore, the action of the snap-type of each film metal parts 51A, 51B is suppressed by this slip resistance and can not be changed to upturned position P2 once, but is out of shape according to pressure.In addition, because the action of snap-type is suppressed by the slip resistance between film metal parts 51A, 51B, therefore membrane body distortion, even if distortion as each film metal parts is that free state is when then can carry out the degree of snap-type action, the spring constant of membrane body self also can not become negative value (direction for rotary movement Direction distortion), this spring constant becomes the value of 0 or just (for returning to the direction of original shape) close to 0, thus, the action relative to pressure change amount of deformation slow motion formula is greatly become.Therefore, valve rod 31 is also followed it and is moved, and as shown in Fig. 5 (c), is deformed into upturned position P2 at film metal parts 51A, valve rod 31 in-position Q2.In addition, in above-mentioned, be mainly conceived to film metal parts 51A and deformed movement is illustrated, but the distortion of adjoint film metal parts 51A, other film metal parts 51B be laminated on these film metal parts 51A is out of shape similarly.
Fig. 6 schematically show the above-mentioned structure of carrying out the action of slow motion formula and in the past carry out the plotted curve of the valve rod in each structure of the structure of the action of snap-type relative to the amount of movement (namely, the amount of deformation of the middle body C of film metal parts 51A) of hydrodynamic pressure.
Membrane body 50 is as described above by not being out of shape the structure in the past of carrying out the rotary movement of snap-type in advance, as shown in phantom in Figure 6, because membrane body 50 is not out of shape in advance, therefore the initial position of valve rod 31 is in the position (more the position of separate location Q2) lower than above-mentioned position Q0.If hydrodynamic pressure becomes large gradually from this state, then membrane body 50 is out of shape gradually according to this hydrodynamic pressure, and valve rod 31 moves gradually towards position Q2.Further, when reaching the pressure A1 of regulation, membrane body 50 carries out the rotary movement of snap-type, and valve rod 31 moves to position Q2 once.Therefore, the pressure in valve chamber 25 sharply changes, and produces vibration action.
On the other hand, at membrane body 50 as described above by being out of shape in the structure of present embodiment of the action carrying out slow motion formula in advance, as shown in solid line in Fig. 6, membrane body 50 is out of shape in advance, and therefore in an initial condition, valve rod 31 is in above-mentioned position Q0.If hydrodynamic pressure becomes large gradually from this state, then only form membrane body 50 multiple film metal parts 51 teat 54 middle body C beyond part primary deformable, the invariant position of this middle body C, valve rod 31 is still in position Q0.Then, when becoming the pressure A2 of the regulation lower than above-mentioned pressure A1, the entirety of teat 54 roughly reaches rotary movement initial position P1, and carry out the rotary movement with the pressure correspondingly slow motion formula that amount of deformation is larger, valve rod 31 and hydrodynamic pressure correspondingly move to position Q2.Therefore, the pressure in valve chamber 25 can not sharply change, and can suppress vibration action.
As described above, the pressure-operated valve 1 of present embodiment possesses: valve casing 10; Membrane body 50, it divides valve chamber 25 together with valve casing 10, and the multiple elastic film metal parts 51 utilizing the hydrodynamic pressure in this valve chamber 25 to carry out being out of shape by stacked and forming; And seat portion 19, it is arranged at valve casing 10, and is formed with the distortion of membrane body 50 and the valve port 16 of opening and closing that cause with hydrodynamic pressure.Each of multiple film metal parts 51 forming membrane body 50 there is annular plate portion 53 and be connected integratedly with the inner edge in this annular plate portion 53 overlook rounded shape and bulge into the teat 54 of mountain shape to a direction, be formed as under free state, teat 54 entirety is from original shape towards the rotary movement Direction distortion contrary with an above-mentioned direction to when arriving the shape of the rotary movement initial position P1 specified, this teat 54 carries out the rotary movement of snap-type, and teat 54 is with mutually stacked towards unidirectional mode respectively.The periphery of this membrane body 50 is fixed on valve casing 10 to make each teat 54 of multiple film metal parts 51 towards the mode of valve port 16 side by membrane body 50, the movement correspondingly opening and closing of valve port 16 and the middle body C of the teat 54 from the nearest film metal parts 51A of this valve port 16.And, when valve port 16 pent valve closing, be deformed in advance: the middle body C from the teat 54 of the nearest film metal parts 51A of valve port 16 is configured to exceed to side, rotary movement direction the position corresponding with this middle body C of rotary movement initial position P1, and the front being partly arranged at the position corresponding with the part beyond this middle body C of rotary movement initial position P1 beyond the middle body C of this teat 54.
In addition, each teat 54 of multiple film metal parts 51 has with same heart shaped configuration and the first component part 55 and the second component part 56 connected successively in the radial direction, these first component parts 55 and the second component part 56 are formed as, the degree of crook of radial direction or mutually different from other adjacent component parts relative to the inclined degree in annular plate portion 53.
In addition, also possess: the ball valve 32 valve port 16 being carried out to opening and closing; And so that with the distortion of membrane body 50, the mode of opening and closing valve port 16 links the columned valve rod 31 of this membrane body 50 and ball valve 32, the diameter of the end face of membrane body 50 side of valve rod 31 is less than the diameter being positioned at the second component part 56 of the central authorities of the teat 54 from the nearest film metal parts 51A of valve port 16 of membrane body 50.
In addition, between multiple film metal parts 51, incompressible fluid 52 is filled with.
Above, according to the present embodiment, each of multiple film metal parts 51 forming membrane body 50 there is annular plate portion 53 and be connected integratedly with the inner edge in this annular plate portion 53 overlook rounded shape and bulge into the teat 54 of mountain shape to a direction.Each of multiple film metal parts 51 is formed as, under free state, teat 54 entirety is from original shape towards the rotary movement Direction distortion contrary with an above-mentioned direction to when arriving the shape of the rotary movement initial position P1 specified, this teat 54 carries out the rotary movement of snap-type.Multiple film metal parts 51 are mutually stacked towards unidirectional mode respectively with teat 54.The periphery of this membrane body 50 towards the mode of valve port 16 side, is fixed on valve casing 10 with each teat 54 of multiple film metal parts 51 by membrane body 50.The movement correspondingly opening and closing of valve port 16 and the middle body C of the teat 54 from the nearest film metal parts 51A of this valve port 16.And, when valve port 16 pent valve closing, be out of shape in advance as follows, middle body C from the teat 54 of the nearest film metal parts 51A of valve port 16 is configured to the position corresponding with this middle body C exceeding rotary movement initial position P1 to side, rotary movement direction, and the front being partly arranged at the position corresponding with the part beyond this middle body C of rotary movement initial position P1 beyond the middle body C of this teat 54.
Like this, i each of multiple film metal parts 51 of () formation membrane body 50 carries out snap-type action under free state, these multiple film metal parts 51 stacked and form membrane body 50, therefore between film metal parts 51, slip resistance is produced when being out of shape, (ii) and, when the valve closing of valve port 16, middle body C from the teat 54 of the nearest film metal parts 51A of this valve port 16 is configured to exceed rotary movement initial position P1 in advance, therefore the middle body C of each teat 54 of multiple film metal parts 51 becomes state contacting one another, the slip resistance produced between film metal parts 51 becomes large further, inhibit snap-type action.Therefore, by suppressing each snap-type action of multiple film metal parts 51, the deformed movement (action of slow motion formula) corresponding to hydrodynamic pressure is become as membrane body 50, therefore compared with the action of snap-type, the pressure oscillation sharply in valve chamber 25 can be suppressed, can vibration action be suppressed.
(iii) in addition, if inhibit the pressure exceeding regulation, the action of the snap-type be out of shape once due to the slip resistance between film metal parts 51, therefore larger amount of deformation can be obtained relative to the change of pressure.Therefore, even if the variable quantity of hydrodynamic pressure is little, membrane body 50 is also out of shape significantly, thus can guarantee larger flow when valve opening.
In addition, the teat 54 forming multiple film metal parts 51 of membrane body 50 has with same heart shaped configuration and the first component part 55 and the second component part 56 connected successively in the radial direction, each of these first component parts 55 and the second component part 56 is formed as, the degree of crook of radial direction or mutually different from other adjacent component parts relative to the inclined degree in annular plate portion 53.Like this, compared with the teat of the such as overall semi-spherical shape of continuous bend smoothly etc., such as, if each component part is bending shape, then can adjust the degree of crook of each component part independently, or, if each component part is in the upper smooth shape of a direction (such as radial direction), then can adjust the inclined degree relative to annular plate portion independently, thereby, it is possible to adjust in scope by a larger margin the deformation characteristic of the teat 54 be made up of the first component part 55 and the second component part 56.Therefore, it is possible to easily obtain the membrane body 50 of desired deformation characteristic.
In addition, also possess: the ball valve 32 valve port 16 being carried out to opening and closing; And so that with the distortion of membrane body 50, the mode of opening and closing valve port 16 links the columned valve rod 31 of this membrane body 50 and ball valve 32.Further, the diameter of the end face of membrane body 50 side of valve rod 31 is less than the diameter being positioned at the second component part 56 of the central authorities of the teat 54 from the nearest film metal parts 51A of valve port 16 of membrane body 50.Like this, the second component part 56 being positioned at the central authorities of the teat 54 of film metal parts 51 is easily out of shape because rigidity is low, and therefore this second component part 56 easily contacts with other film metal parts 51, therefore, it is possible to increase surface friction drag.Thereby, it is possible to suppress the action of snap-type further, become the deformed movement (action of slow motion formula) corresponding to hydrodynamic pressure.
In addition, between multiple film metal parts 51, incompressible fluid 52 is filled with.Like this, even if there is small space between stacked film metal parts 51, also because the distortion of film metal parts 51 is delivered to other adjacent film metal parts 51 via incompressible fluid 52, therefore, it is possible to improve the reactivity relative to the valve opening and closing of hydrodynamic pressure, therefore small pressure is changed to the amount of deformation that also can obtain greatly.
Above, preferred embodiment to describe the present invention, but pressure-operated valve of the present invention is not limited to the structure of above-mentioned mode of execution.
Such as, in the above-described embodiment, the multiple film metal parts 51 forming membrane body 50 are formed as identical shape respectively, but are not limited thereto.Such as, also the membrane body 50A of following structure can be made, namely, as shown in Figure 7, stacked multiple film metal parts 51 (film metal parts 51A, three film metal parts 51C), other multiple film metal parts 51C beyond the film metal parts 51A nearest from valve port, are provided with through hole 58 in central authorities.In other words, through hole 58 is formed with from least one removing after the nearest film metal parts 51A of valve port 16 remaining film metal parts 51C of multiple film metal parts 51 in the central authorities of its teat 54 also passable.Like this, by changing the shape of this through hole 58, size or being provided with the quantity etc. of film metal parts 51 of through hole 58, can adjust in scope by a larger margin the deformation characteristic of membrane body 50A.Therefore, it is possible to easily obtain the membrane body of desired deformation characteristic.
In addition, in the above-described embodiment, membrane body 50 is consisted of stacked two film metal parts 51 (51A, 51B), but is not limited thereto, also can stacked more than three film metal parts 51 and form.In addition, membrane body 50 is configured to be filled with incompressible fluid 52 between multiple film metal parts 51, but and be defined in this, also can make and omit the structure of incompressible fluid 52.
In addition, in the above-described embodiment, as shown in Figure 3, the teat 54 of film metal parts 51 is the structures possessing the first component part 55 of ring-type and the second component part 56 of circular plate, but and is defined in this.Such as, also can as shown in Fig. 8 (a), make the film metal parts 51D having and be formed as the second component part 56D of concavity relative to the first component part 55, or also as shown in Fig. 8 (b), the film metal parts 51E with the second component part 56E reducing (increase curvature) convex of degree of crook relative to the first component part 55 can be made.Or, also as shown in Fig. 8 (c), the film metal parts 51F of the teat 54F with overall semi-spherical shape bending continuously smoothly can be made.Or, also can as shown in Fig. 8 (d), make the film metal parts 51G possessing teat 54G, this teat 54G possesses concentrically configuration and the first component part 55G connected successively in the radial direction, the second component part 56G and the 3rd component part 57G, first component part 55G, the second component part 56G and the 3rd component part 57G are gently formed in the radial direction, and are formed as different from other adjacent component parts relative to the inclined degree in annular plate portion 53.As long as namely without prejudice to object of the present invention, the film metal parts forming membrane body also can be formed as its teat and have the configuration of same heart shaped and the multiple component parts connected successively in the radial direction, each of multiple component part is formed as, the degree of crook of radial direction or mutually different from other adjacent component parts relative to the inclined degree in annular plate portion.Or its teat also can be formed as overall shape bending continuously smoothly.
In addition, in the above-described embodiment, be the structure of indirectly valve port 16 being carried out to opening and closing via valve member 30, this valve member 30 and membrane body 50 interlock be out of shape because of the hydrodynamic pressure in valve chamber 25 are also mobile, but are not limited thereto.Such as, also as the structure of the pressure-operated valve in the past of Figure 11, membrane body can be made and is directly pressed into seat portion, carry out the structure of directly valve port being carried out to opening and closing by the distortion of membrane body.
In addition, above-mentioned mode of execution only represents representational mode of the present invention, and the present invention is not limited to mode of execution.Namely, those skilled in the art according to known opinion, can carry out various distortion in the scope not departing from purport of the present invention and implement.As long as still possessed the structure of pressure-operated valve of the present invention by this distortion, self-evident, be also contained in category of the present invention.
Then, inventor of the present invention is in order to confirm effect of the present invention and make embodiment 1,2 and the comparative example 1,2 of the structure that amount of deformation is different in advance about above-mentioned pressure-operated valve 1, about each embodiment 1,2 and comparative example 1,2, carry out following experiment, namely carry out the confirmation of valve rod 31 amount of movement (namely, the amount of deformation of membrane body 50) relative to the pressure being applied to membrane body 50.
First, the concrete structure of the film metal parts 51 used in embodiment 1,2 and comparative example 1,2 is described.These film metal parts 51 are from the plectane of stainless steelplate punching diameter 20mm and be forged into roughly hemispherical by the central authorities of this plectane and become the shape shown in Fig. 3 (a), (b).These film metal parts 51 have: the annular plate portion 53 that external diameter (D1) is 20mm, internal diameter (D2) is 14mm; And with the diameter (D2) that the inner edge in annular plate portion 53 is connected the integratedly teat 54 that is 14mm, thickness (T) is formed as 0.15mm.The teat 54 of these film metal parts 51 has: the first component part 55 of the ring-type that external diameter (D2) is 14mm, internal diameter (D3) is 4mm; And the second component part 56 of diameter (D3) circular plate that is 4mm, teat 54 is set to 0.84mm apart from forging height (height H from annular plate portion 53 to the second component part 56) of ring-type plat part 53.
Fig. 9 represents the plotted curve of the amount of deformation under the free state of these film metal parts 51 relative to the relation of pressure.In figure, being the scope of the amount of deformation of the rotary movement carrying out snap-type in dotted line frame, in this film metal parts 51 (plotted curve of solid line (embodiment 1,2, comparative example 1,2)), is 0.22mm ~ 0.65mm.In addition, as a reference, about the film metal parts 51 of said structure, also change to the film metal parts after 0.71mm or 0.64mm (plotted curve (reference example 1) of single dotted broken line and the plotted curve (reference example 2) of dotted line) indicate plotted curve to only forging height (H).In reference example 1, above-mentioned scope is 0.18mm ~ 0.60mm, in reference example 2, is 0.21mm ~ 0.75mm.
(embodiment 1)
Stacked two above-mentioned film metal parts 51 and fill incompressible fluid 52 between which and make membrane body 50, in the mode that the amount of deformation in advance of the middle body C of the film metal parts 51A nearest from valve port 16 in this membrane body 50 is 0.37mm, the pressure-operated valve 1 that making is assembled this membrane body 50 and obtained, it can be used as embodiment 1.(namely, make amount of deformation in advance carry out above-mentioned snap-type rotary movement amount of deformation scope in (0.22mm ~ 0.65mm).)
(embodiment 2)
In embodiment 1, except the amount of deformation in advance of the middle body C making the film metal parts 51A in membrane body 50 is except 0.57mm, makes with the structure identical with embodiment 1, it can be used as embodiment 2.(namely, make amount of deformation in advance carry out above-mentioned snap-type rotary movement amount of deformation scope in (0.22mm ~ 0.65mm).)
(comparative example 1)
In embodiment 1, except the amount of deformation in advance of the middle body C making the film metal parts 51A in membrane body 50 is except 0.18mm, makes with the structure identical with embodiment 1, it can be used as comparative example 1.(amount of deformation in advance namely, is made to carry out the scope outer (0.22mm ~ 0.65mm) of amount of deformation of rotary movement of above-mentioned snap-type.)
(comparative example 2)
In embodiment 1, except making the amount of deformation in advance of the middle body C of the film metal parts 51A in membrane body 50 be except 0.00mm (not being out of shape in advance), making with the structure identical with embodiment 1, it can be used as comparative example 2.(amount of deformation in advance namely, is made to carry out the scope outer (0.22mm ~ 0.65mm) of amount of deformation of rotary movement of above-mentioned snap-type.)
(measuring the amount of movement of valve rod)
In the pressure-operated valve 1 of the above embodiments 1,2 and comparative example 1,2, measure the amount of movement of valve rod 31 relative to the pressure of the fluid flowed into from inlet attack 12a, and judge based on following determinating reference.
Zero ... do not carry out the part with the change of longitudinal axis in plotted curve, do not carry out the action of snap-type.
× ... there is in plotted curve the part of carrying out with the change of longitudinal axis, carry out the action of snap-type.
Figure 10 represents the plotted curve of the valve rod in embodiment 1,2 and comparative example 1,2 relative to the measurement result of the amount of movement of hydrodynamic pressure.Below represent the result of determination in embodiment 1,2 and comparative example 1,2.
Embodiment 1 ... zero
Embodiment 2 ... zero
Comparative example 1 ... ×
Comparative example 2 ... ×
In embodiment 1,2, do not carry out the action of snap-type, from the plotted curve of Figure 10 also, amount of deformation and the pressure of the amount of movement of valve rod 31, i.e. membrane body 50 correspondingly change.Namely the action of slow motion formula, is carried out.On the other hand, in comparative example 1,2, carry out the action of snap-type, from the plotted curve of Figure 10 also, under the pressure of regulation, the amount of movement of valve rod 31 under certain pressure sharp (with y direction abreast) change.Namely the action of snap-type, is carried out.
It can thus be appreciated that, in embodiment 1,2, because valve rod 31 and hydrodynamic pressure correspondingly move, therefore can not produce the increase and decrease of flow sharply, can vibration action be suppressed.Known on the other hand, in comparative example 1,2, under the hydrodynamic pressure of regulation, valve rod 31 moves significantly, therefore produces the increase and decrease of flow sharply, produces vibration action.
Like this, from the result of the action of reality, the present invention has and flow can be suppressed repeatedly to increase and decrease and the effect of the vibration action caused.
Claims (5)
1. a pressure-operated valve, possesses: valve casing; Membrane body, it divides valve chamber together with above-mentioned valve casing, and consists of stacked multiple elastic film metal parts of being out of shape because of the hydrodynamic pressure in this valve chamber; And seat portion, it is located at above-mentioned valve casing, and is formed with the distortion of above-mentioned membrane body and the valve port of opening and closing that cause with above-mentioned hydrodynamic pressure, and the feature of above-mentioned pressure-operated valve is,
Each of above-mentioned multiple film metal parts there is annular plate portion and be connected integratedly with the inner edge in this annular plate portion overlook rounded shape and bulge into the teat of mountain shape to a direction, be formed as under free state, above-mentioned teat is overall from original shape towards the rotary movement Direction distortion contrary with an above-mentioned direction to when arriving the shape of the rotary movement initial position specified, this teat carries out the rotary movement of snap-type, and above-mentioned teat is with mutually stacked towards unidirectional mode respectively
The periphery of this membrane body is fixed on above-mentioned valve casing to make each teat of above-mentioned multiple film metal parts towards the mode of above-mentioned valve port side by above-mentioned membrane body,
The movement correspondingly opening and closing of above-mentioned valve port and the middle body of the teat from the nearest above-mentioned film metal parts of this valve port,
When the pent valve closing of above-mentioned valve port, be deformed into following shape in advance, middle body from the teat of the nearest above-mentioned film metal parts of above-mentioned valve port is configured to the position corresponding with this middle body exceeding above-mentioned rotary movement initial position to side, above-mentioned rotary movement direction, and being partly arranged at the position corresponding with the part beyond this middle body than above-mentioned rotary movement initial position more by front beyond the middle body of this teat.
2. pressure-operated valve according to claim 1, is characterized in that,
Above-mentioned teat possesses with same heart shaped configuration and the multiple component parts connected successively in the radial direction,
Each of above-mentioned multiple component part is formed as, the degree of crook of radial direction or mutually different from other adjacent above-mentioned component parts relative to the inclined degree in above-mentioned annular plate portion.
3. pressure-operated valve according to claim 2, is characterized in that,
Also possess: the valve body above-mentioned valve port being carried out to opening and closing; And
So that with the distortion of above-mentioned membrane body, the mode of the above-mentioned valve port of opening and closing links the columned valve rod of this membrane body and above-mentioned valve body,
The diameter of the end face on the above-mentioned diaphragm side of above-mentioned valve rod is less than the diameter being positioned at the above-mentioned component part of the central authorities of the teat from the nearest above-mentioned film metal parts of above-mentioned valve port of above-mentioned membrane body.
4., according to the pressure-operated valve described in any one of claims 1 to 3, it is characterized in that,
Incompressible fluid is filled with between above-mentioned multiple film metal parts.
5., according to the pressure-operated valve described in any one of claims 1 to 3, it is characterized in that,
The central authorities that at least one from above-mentioned multiple film metal parts removing after the nearest above-mentioned film metal parts of above-mentioned valve port remaining one or more above-mentioned film metal parts states teat are thereon formed with through hole.
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| JP2013147728A JP5913216B2 (en) | 2013-07-16 | 2013-07-16 | Pressure operated valve |
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| US12061487B2 (en) | 2022-06-01 | 2024-08-13 | Husqvarna | Pressure reducer |
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| GB2610142B (en) | 2016-08-16 | 2023-06-07 | Fisher & Paykel Healthcare Ltd | Pressure regulating valve |
| CN110332344A (en) * | 2019-08-09 | 2019-10-15 | 珠海格力电器股份有限公司 | unloading valve and air conditioner |
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- 2014-07-15 CN CN201410334840.1A patent/CN104295780B/en active Active
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2016
- 2016-05-26 KR KR1020160065054A patent/KR102084823B1/en active IP Right Grant
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| JP2002071037A (en) * | 2000-08-28 | 2002-03-08 | Saginomiya Seisakusho Inc | Relief valve, high pressure control valve with relief valve and super critical vapor refrigerating cycle device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US12061487B2 (en) | 2022-06-01 | 2024-08-13 | Husqvarna | Pressure reducer |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150009454A (en) | 2015-01-26 |
| KR102084823B1 (en) | 2020-03-04 |
| KR20160064065A (en) | 2016-06-07 |
| CN104295780B (en) | 2016-06-15 |
| JP5913216B2 (en) | 2016-04-27 |
| JP2015021518A (en) | 2015-02-02 |
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