CN1763404A

CN1763404A - Safety cut-off for pressurized water vapour producing devices

Info

Publication number: CN1763404A
Application number: CNA2005101142532A
Authority: CN
Inventors: 路易斯·莫雷诺·霍尔达纳
Original assignee: Celaya Emparanza y Galdos Internacional SA
Current assignee: Beaulne Co. Ltd.
Priority date: 2004-10-22
Filing date: 2005-10-24
Publication date: 2006-04-26
Anticipated expiration: 2025-10-24
Also published as: ES2302582B1; ES2289845A1; ES2302582A1; CN1763404B; ES2289845B1; HK1086873A1; TW200624724A

Abstract

A safety cut-off for devices for producing pressurised water vapour, preferably for domestic use, characterised by comprising a hinged cover (1) which is disposed in closing/opening relationship with an access to a recess (2), preferably a funnel, through which water is poured for filling and refilling of a boiler in which the water vapour is produced, which cover (1) has a shaft (3) in relation to which there rotates a cam (4) which is integral with the cover (1), and which has an active surface which is applied to a cam surface (6) of a lever (5) which is rotatable relative to a lever shaft (7), and which, spaced from the latter, has an aperture (8) through which there slides a rod (10), which at one end incorporates a valve (9) for filling and closure, which is interposed between the recess (2) and a chamber (12) for containing water vapour as produced in the boiler, which valve (9) can adopt one of two operative positions, such that, in one position, the valve (9) acts to close a valve passage (11) which provides a communication between the recess (2) and the chamber (12), and, in the other position, the valve (9) is opened.

Description

The safety switch that is used for family expenses pressurized steam generation device

Technical field

The present invention relates to a kind of safety switch, be used for the apparatus for household use of any kind, this device is designed to produce the steam under pressure that is used for various purposes.

This additional patent relates to a kind of safety switch, is used for the apparatus for household use of any kind, and this device is designed to produce the steam under pressure that is used for various purposes, when having steam under pressure with box lunch in steam chambers, avoids taking place the risk of scald accident when water-filling.

Background technique

In field of the present invention, in present device, utilize thread plug to realize the vaporizer water-filling that wherein produces steam under pressure and water-filling again are provided with safety valve in this thread plug.

This system has various shortcomings.With regard to its have to regard to the potential risk of personnel's personal safety, the most important thing is, if the related personnel does not recognize that this device is being worked and contained when stopper and is removed or only is that the pressurized steam that will spray towards the user takes place when loosening, when when installing again water-filling, the danger that exists the user to be scalded accidentally; Even stopper itself may be as body directive user.

Another shortcoming is such fact, and in order to guarantee effectively to close, stopper has the screw section of broad, and this just need repeatedly reverse so that be tightened or unload; This is inconvenient with unpractical.

The prior art of this additional patent is included in the content that contains among the Spain patent of invention P-200402527, this patent relates to a kind of special structure, it comprises the folding top, this folding top is set to concern with the interruption-forming close of going into of funnel, current must inject so that fill and refill the vaporizer that produces steam therein by this funnel, this folding top has apical axis, the cam that forms as one with the folding top rotates about apical axis, and this cam has the movable periphery that acts on the camshaft, this camshaft with can form one about the lever of lever shaft rotation, and lever has and lever shaft hole separately, a bar vertically slides by described hole, described this root bar is combined with filling valve in its lower end, this valve places funnel and is used for exporting between the chamber of the steam that vaporizer produces, this filling valve can be positioned at two operating positions, it is the upper and lower operating position, thereby, operating position at an upper portion thereof, filling valve is as the gate on the lower plane that is seated in valve passage, described valve passage makes this funnel be communicated with described output chamber formation, and, at its underpart operating position, filling valve separates with base, its lever has the spring that is attached thereto and can be at two operating positions, be to swing between the operating position of upper and lower, thereby, at spring bottom operating position, this spring is in its maximal phase to relaxed state, and contacting between the camshaft that lever takes place on the definite part of this cam and cam that folding pushes up, this part has the bigger radius of the radius that open position provided than the folding top, and at spring top operating position, this spring is in its maximal phase to compressive state, and contacting between this camshaft and the cam taken place on the definite part of this cam, this part has the littler radius of the radius that closed position provided than the folding top, and top at this valve passage, described bar is by the described hole in the lever, and it is outstanding from the outside, on this outside, has flange, this flange has the size greater than the diameter in described hole, and the lower end of spiral compression spring is supported on this flange, the elasticity of this spiral compression spring is weaker than the described spring that links to each other with lever, and order about lever to its upper position, and the flange of described bar is placed on the described hole in the lever thus.

This structure can guarantee, when the folding top is raised and steam under pressure when being present in the steam chambers, is used for water-filling and the valve of cutting out cuts out maintenances, avoids steam leakage and scald user thus.But it does not have any device, is used for being given in the visual warning that there is pressure in steam chambers, even if steam can not spray towards the user.It does not have any device yet, is used for avoiding because the steam rising that the waste heat of steam chambers produces when carrying out the water-filling operation.

Summary of the invention

Given this, the invention provides a kind of safety switch, be used to produce the apparatus for household use of pressurized steam, it has special tectonic like this, this structure comprises the folding top, this folding top is set to concern with the interruption-forming close of going into of funnel, must inject so that fill and refill the vaporizer that produces steam therein by this funnel, this folding top has apical axis, the cam that forms as one with the folding top rotates about apical axis, and this cam has the movable periphery that acts on the camshaft, this camshaft with can form one about the lever of lever shaft rotation, and lever has and lever shaft hole separately, a bar vertically slides by this hole, this root bar is combined with filling valve in its lower end, this valve places funnel and is used for exporting between the chamber of the steam that vaporizer produces, filling valve can be positioned at two operating positions, it is the upper and lower operating position, thereby, at the top of filling valve operating position, filling valve is as the gate on the lower plane that is seated in valve passage, described valve passage makes this funnel be communicated with described output chamber formation, and, at the bottom of filling valve operating position, filling valve separates with base, its lever has the spring that is attached thereto and can be at two operating positions, be to swing between the operating position of upper and lower, thereby, at the bottom of spring operating position, this spring is in its maximal phase to tensioning state, and contacting on the definite part that occurs in this cam between the cam on the camshaft of lever and folding top, this part has the bigger radius of the radius that open position provided than the folding top, and at spring top operating position, this spring is in its maximal phase to relaxed state, and contacting on the definite part that occurs in this cam between this camshaft and the cam, this part has the littler radius of the radius that closed position provided than the folding top, and top at this valve passage, described bar is by the described hole in the lever, and it is outstanding from the outside, on this outside, has flange, this flange has the size greater than the diameter in this hole, and the lower end of spiral compression spring is supported on this flange, the elasticity of this spiral compression spring is weaker than the described spring that links to each other with lever, and order about filling valve to its underpart operating position, at this bottom operating position, this flange is resisted against on the described hole and lever is taked its described lower position.

This shutoff device provides the utility function of the danger of guaranteeing to avoid above-mentioned generation accident.In fact, folding top cam means with the configuration that combines of lever and cam axle, when open on the folding top, the lever antagonistic spring orders about it and is in the effect of top operating position and is tending towards its underpart operating position, thereby the weight of helical spring effect (making filling valve be tending towards the bottom operating position) and this filling valve self, mean that this filling valve effectively is positioned at this bottom operating position, described position makes current flow to vaporizer by valve passage; On the other hand, wherein the position closed, this folding top makes relaxing of spring, when this spring is replied, make described bar promote, and utilize thus hole in the lever on described bar flange effect and make filling valve promote, this utilizes compression helical spring and produces and realize the closed position of filling valve.When filling valve cut out, the pressure of the water vapor that produces in vaporizer can keep this closed condition, even there is the people to open the water-filling operation and do not recognize have pressurized steam in this device again of folding jacking row; This explanation under any circumstance all can be opened folding top, and does not have any danger that pressurized steam can the directive user, thereby makes this user be protected and do not have unfortunate danger of being scalded; At this state, the top operating position (closing) of the lower position of lever and water-filling and cut-off valve is compatible, because the bar of this valve is freely by the hole in the lever, and and if only if described bar and lever when being in position, its underpart, the lifting of lever also spurs described bar, thereby its flange can not pass the hole in the lever, as mentioned above.

Another advantage of the present invention is, with the dismounting and tighten once more subsequently and need repeatedly rotate so that provide safe and effective stopper of closing effect to compare, be communicated with the easy and convenience of operation, this connection operation preestablishes the opening/closing function on folding top for the purpose of water-filling.

In this respect, and for bigger convenience is provided, of the present invention another is characterised in that folding withstands on its free edge to have in order to make things convenient for the handgrip of its operation.

Another is characterised in that the present invention, and is parallel with described filling valve, is provided with safety valve between funnel and described output chamber.

Given this, this additional patent proposes a kind of scheme, according to this scheme, in the top, described bar extended to has extension part, and the top of this extension part has decorative colors and guided in the hole, and described hole is pushed up the funnel of being closed with folding and is connected; Open position about water-filling and cut-off valve, perhaps bottom operating position, and closed position, perhaps top operating position, extension part is positioned at bottom and upper position respectively, thereby, in position, its underpart, its coloured top is withdrawn in the hole, and position at an upper portion thereof, this top penetrates the cavity that forms at the transparent cover that is arranged in funnel.

The operation of this scheme is obvious.When the underpressure in the steam chambers so that water-filling is when being closed (the preformed security feature of helical spring characteristic that links to each other with its described bar) with cut-off valve, this valve will be in open mode, and the extension part of described bar will be withdrawn and its coloured top can not see through by the viewer of the transparent cover institute structure layer of the funnel that is arranged in this device and sees thus.On the other hand, when existence exceeds the vapor pressure of safety margin, this valve is closed, and the coloured top of the decoration of described bar will penetrate in the cavity in the viewer, and when the folding top is raised, can clearly be observed by the user, and the indication user, currently can't carry out again water-filling operation steam chambers.

Another purpose of this additional patent is that between valve passage and lever, be provided with flat board, its peripheral size is designed to reserve the passage that is connected with funnel, though this passage is narrow, can make that still current enter steam chambers.

This scheme is designed to especially, when steam chambers still is in the condition of high temperature owing to nearest use in advance, when injecting cold water, can avoid when in steam chambers, having steam under pressure, produced simultaneously steam therefrom leaks into the external world and is ejected on one's body the user, described steam will make the user frightened and can not cause damage to it, be different from former situation, and it is avoided now.

Can clearly understand these and other feature of the present invention in conjunction with the accompanying drawings.

Brief Description Of Drawings

In order to understand essence of the present invention better, accompanying drawing illustrates a kind of preferred form of industrial implementation example, and its essence is schematically and indefiniteness fully.

Fig. 1 illustrates the cross section of the device that is used to produce family expenses pressurized water steam, and it is provided with according to folding of the present invention top 1.This accompanying drawing has the amplification detailed view of described device, and folding top 1 is in the position of opening.

Fig. 2 is similar to Fig. 1, but relates to roll over the closed position on top 1.

Fig. 3 is similar to Fig. 2, is opened but wherein roll over top 1 when having water vapour pressure in vaporizer.

Fig. 4 is similar to previous drawings, and is illustrated in the serviceability under the situation of pressurized water steam gun, illustrates the operation of emission, as can clear view arriving in the detailed view of the amplification that this accompanying drawing has.

Point out the main patent of invention of the numbering of these accompanying drawings and institute of the present invention reference consistent herein.

Fig. 5 illustrates the view of this additional patent content with the presentation of the Fig. 1 that is similar to main patent of invention.

Fig. 6 is similar to Fig. 5, but relates to wherein roll over top 1 was closed and existed pressure in steam chambers 12 position.

Fig. 7 is similar to Fig. 5, but relates to wherein roll over the position that top 1 is opened and has pressure in steam chambers 12.

The specific mark that is used for patent of the present invention shown in below these accompanying drawings illustrate, and those marks that are used for identical purpose and listed at Spain patent P-200402527;

1. folding pushes up

2. funnel

3. folding pushes up the axle of (1)

4. folding pushes up the cam of (1)

5. lever

6. the camshaft of lever (5)

7. the axle of lever (5)

8. the hole of lever (5)

9. water-filling and cut-off valve

10. the bar of water-filling and cut-off valve (9)

11. valve passage

12. steam chambers

13. torsion spring

14. the flange of bar (10)

15. spiral compression spring

16. handgrip

17. safety valve

18. trigger

19. trigger push rod

20. steam output valve shaft

21. steam is exported the base of closing of valve shaft (20)

22. water conservation Sealing

23. the supporting element of safety shutdown assembly

10.1 the extension part of bar (10)

24. the viewer hole that is connected with funnel (2)

25. the transparent cover or the viewer of funnel (2)

25.1 the cavity of transparent cover (25)

26. the plate between valve passage (11) and the lever (5)

Embodiment

With reference to above-mentioned accompanying drawing and mark, appended accompanying drawing illustrates a preferred embodiment of the present invention, and this embodiment relates to a kind of safety switch, is used for producing the device of family expenses pressurized steam.

The object of the invention is to avoid, when the user carries out water-filling to vaporizer accidentally and does not recognize that this device is being worked and pressurized steam is contained in portion within it, and scald and other possible damage that may cause by the present known devices in related domain; In this situation, the existing scheme of utilizing threaded insert to close does not provide safety protection to the user, because when described stopper is loosening, pressurized steam begins to rise towards the user, perhaps in addition this stopper also can rise, just as body penetrates.

In view of this problem, solution according to the present invention comprises (Fig. 1) folding top 1, this folding top 1 is set to and is communicated with funnel formation close relation, current must inject so that fill and refill the vaporizer that produces steam therein by this funnel 2, this folding top 1 has apical axis 3, rotate about apical axis 3 with folding top 1 cam that forms as one 4, and this cam 4 has the movable periphery that is applied on the camshaft 6, this camshaft 6 be combined in can lever 5 about lever shaft 7 rotation in, and lever 5 has and lever shaft 7 hole 8 separately, bar 10 vertically slides by hole 8, bar 10 is combined with the valve 9 that is used for water-filling and cuts out in its lower end, valve 9 places funnel 2 and is used between the chamber 12 of the steam that vaporizer produces, the valve 9 that is used for water-filling and cuts out can adopt two, it is the upper and lower operating position, thereby, operating position at an upper portion thereof, water-filling and cut-off valve 9 are as the gate on the lower plane that is seated in valve passage 11, described valve passage 11 makes this funnel 2 be communicated with described steam chambers 12 formation, and, in position, its underpart, water-filling separates with base with cut-off valve 9, its lever 5 has the torsion spring 13 that is attached thereto and can be at two, be to swing between the operating position of upper and lower, thereby, in position, its underpart, this torsion spring 13 is in its maximal phase to tensioning state, and contacting on the definite part that occurs in this cam 4 between the cam 4 on the camshaft 6 of lever 5 and folding top 1, this part has the bigger radius of the radius that open position provided than folding top 1, and operating position at an upper portion thereof, this torsion spring 13 is in its maximal phase to relaxed state, and contacting on the definite part that occurs in this cam 4 between this camshaft 6 and the cam 4, this part has the littler radius of the radius that closed position provided than folding top 1, and top at this valve passage 11, described bar 10 is by the described hole 8 in the lever 5, and it is outstanding from the end, on this end, has flange 14, this flange 14 has the size greater than the diameter in this hole 8, and the lower end of spiral compression spring 15 is supported on this flange 14, the elasticity of this spiral compression spring 15 is weaker than the described torsion spring 13 that links to each other with lever 5, and order about water-filling and cut-off valve 9 to its underpart operating position, at this bottom operating position, this flange 14 is resisted against on the described hole 8 and lever 5 is taked its described lower position.

Fig. 1 to 3 illustrates the instrumentality of this device.In Fig. 1, open on folding top 1, and do not have vapor pressure in vaporizer; In this situation, because the conjugation configuration of cam 4 and camshaft 6, lever 5 is resisted the rebound effect of torsion springs 13 and is taked its underpart operating position, and this means, utilize the effect and the deadweight thereof of helical spring 15, water-filling and cut-off valve 9 are taked its underpart operating position, and the flange 14 that this position utilizes bar 10 is against the hole 8 of lever 5 and define, and make valve passage 11 be in free state, so that be the vaporizer water-filling.When folding top 1 is closed (Fig. 2), this conjugation configuration of cam 4 and camshaft 6 has been eliminated the pressure that is applied on the torsion spring 13, and the elastic recovery effect of this torsion spring make lever 5 be sent back to its upper position place and since hole 8 on the flange 14 of bar 10 effect and pull lever 10 therewith.Fig. 3 illustrates Safety function, wherein folding top 1 can be opened and not dangerous, close because the pressure of water vapor itself can be guaranteed water-filling and cut-off valve 9, make the numerical value of this vapor pressure greatly reduce, it all is not enough to the user is caused any harm under various situations.

Roll over top 1 in order to substitute the application of existing thread plug itself, expection has very easy and operation easily, and this is strengthened owing to having as viewed handgrip in Fig. 1 and 2 (thumb grip) on its folding top, free edge place 1 again.

Fig. 1 and all the other accompanying drawings illustrate another feature of the present invention, and it comprises such fact, and be promptly parallel with cut-off valve 9 with described water-filling, is provided with safety valve 17 between described funnel 2 and described steam chambers 12.

Fig. 4 illustrates, when the device that is used for this purpose is the spray gun type, is used to spray the start-up operation of the pressurized steam that is produced; In this situation, when pushing during trigger 18, it acts on the push rod 19, and push rod acts on the steam output valve shaft 20, makes it close base 21 from it and separates, thereby and make that thus pressurized steam output is used.

With reference to above-mentioned accompanying drawing and mark, appended accompanying drawing illustrates this additional patent improved preferred embodiment required for protection.

As shown in Figure 5, described improvement comprises, in the top, bar 10 extended to has extension part 10.1, and the top of this extension part has decorative colors, and in hole 24 guiding, described hole is pushed up 1 funnel of being closed 2 with folding and is connected; Open position about water-filling and cut-off valve 9, perhaps bottom operating position, and closed position, perhaps top operating position, extension part 10.1 is taked bottom and upper position respectively, thereby, in position, its underpart, its coloured top is withdrawn in the hole 24, and position at an upper portion thereof, this top penetrates the cavity 25.1 that forms at the transparent cover 25 that is arranged in funnel 2.

Fig. 5 to 7 illustrates different operating positions.Fig. 5 has shown the state that does not have steam and the low temperature to be injected into current and to start working thus with wait in the steam chambers 12 wherein; As can be seen, the extension part 10.1 of bar 10 is withdrawn in the hole 24 and its coloured top can not see through as the transparent cover 25 of viewer and observe.When steam chambers 12 by water-filling, folding top 1 is closed, and when equipment is connected to ac power supply (mains supply), vapor pressure become enough high (Fig. 7), and the extension part 10.1 of bar 10 slides by hole 24, thereby its top with decorative colors penetrates in the cavity 25.1 in the viewer that is made of transparent cover 25.

If folding top 1 is raised under this state, then coloured top of the extension part 10.1 of bar 10 can see through viewer 25 at this moment and significantly observe, and the user will be warned automatically, promptly can not carry out the water-fillings operation to steam chambers 12; This illustrates in Fig. 7.Because the acting in conjunction of cam 4 on the camshaft of lever 5 on folding top 1 causes that when folding top 1 was opened and closed, description had been known in the actuating operation to bar 10 that is taken place in application reference, and need not repetition at this.

Another improvement of this additional patent is, between valve passage 11 and lever 5, inserts plate 26, and its peripheral size is designed to reserve the communication passage with funnel 2, although this passage is comparatively narrow, still can make current arrive steam chambers 12.

As schematically shown in Figure 5, be opened and turn but because recent use when still being in the condition of high temperature, this device can be avoided spraying towards the user of steam danger when steam chambers 12 is filled cold water when it.

Claims

1. safety switch that is used for family expenses pressurized steam generation device, it is characterized in that, comprise folding top (1), this folding top (1) is set to concern with the interruption-forming close of going into of funnel (2), current must inject so that fill and refill the vaporizer that produces steam therein by this funnel (2), this folding top (1) has apical axis (3), the cam (4) that forms as one with folding top (1) rotates about apical axis (3), and this cam (4) has the movable periphery that acts on the camshaft (6), this camshaft (6) with can form one about the lever (5) of lever shaft (7) rotation, and lever (5) has and lever shaft (7) hole (8) separately, bar (10) slides by hole (8) is vertical, bar (10) is combined with the valve (9) that is used for water-filling and cuts out in its lower end, valve (9) places funnel (2) and is used between the chamber (12) of the steam that vaporizer produces, the valve (9) that is used for water-filling and cuts out can be positioned at two operating positions, it is the upper and lower operating position, thereby, top operating position at valve (9), water-filling and cut-off valve (9) are as the gate on the lower plane that is seated in valve passage (11), described valve passage (11) makes this funnel (2) be communicated with described steam chambers (12) formation, and, bottom operating position at valve (9), water-filling separates with base with cut-off valve (9), lever (5) has the torsion spring (13) that is attached thereto and can be at two operating positions, be to swing between the operating position of upper and lower, thereby, bottom operating position at torsion spring (13), this torsion spring (13) is in its maximal phase to tensioning state, and contacting between the cam (4) of the camshaft (6) that lever (5) take place on the definite part of this cam (4) and folding top (1), this part has the bigger radius of the radius that open position provided than folding top (1), and top operating position at torsion spring (13), this torsion spring (13) is in its maximal phase to relaxed state, and contacting between this camshaft (6) and the cam (4) taken place on the definite part of this cam (4), this part has the littler radius of the radius that closed position provided than folding top (1), and top in this valve passage (11), described bar (10) is by the described hole (8) in the lever (5), and it is outstanding from the end, on this end, has flange (14), this flange (14) has the size greater than the diameter of this hole (8), and the lower end of spiral compression spring (15) is supported on this flange (14), the elasticity of this spiral compression spring (15) is weaker than the described torsion spring (13) that links to each other with lever (5), and order about water-filling and cut-off valve (9) to its underpart operating position, at this bottom operating position, this flange (14) is resisted against on the described hole (8) and lever (5) is positioned at its described lower position.

2. according to the safety switch that is used for family expenses pressurized steam generation device of claim 1, it is characterized in that at its free edge place, folding top (1) is formed with handgrip (6).

3. according to the safety switch that is used for family expenses pressurized steam generation device of the arbitrary claim in front, it is characterized in that, parallel with described water-filling with cut-off valve (9), between described funnel (2) and described steam chambers (12), be provided with safety valve (17).

4. according to the safety switch that is used for family expenses pressurized steam generation device of the arbitrary claim in front, it is characterized in that, described switch has water conservation Sealing (22), be used for when the spray gun horizontal positioned, avoiding current to eject from vaporizer, water vapor is injected to come out thereby only have, and in addition, this water conservation Sealing (22) constitutes seal element again between the supporting element of vaporizer itself and safety switch assembly (23).

5. according to the improvement of the safety switch that is used for family expenses pressurized steam generation device of the arbitrary claim in front to patent of invention P-200402527, it is characterized in that, extend extension part (10.1) in the upper end of bar (10), the top of this extension part has decorative colors and is guided in hole (24), and described hole is connected with the funnel (2) of being closed by folding top (1); Open position about water-filling and cut-off valve (9), perhaps bottom operating position, and closed position, perhaps top operating position, extension part (10.1) lays respectively at its underpart and upper position, thereby, in position, its underpart, coloured top of extension part (10.1) is withdrawn in the hole (24), and at the upper position of extension part (10.1), and this top penetrates the cavity (25.1) that the transparent cover (25) that is arranged in funnel (2) forms.

6. according to the improvement of the safety switch that is used for family expenses pressurized steam generation device of the arbitrary claim in front to patent of invention P-200402527, it is characterized in that, between valve passage (11) and lever (5), insert plate (26), its peripheral size is designed to reserve the passage that is connected with funnel (2), although thereby this passage is comparatively narrow, still can make current arrive steam chambers (12), and when but steam chambers (12) is opened and turns still is in the condition of high temperature owing to recent use, when being filled cold water, steam chambers (12) can avoid spraying of steam danger towards the user.