CN101342051B

CN101342051B - Overpressure safety valve

Info

Publication number: CN101342051B
Application number: CN2008101256575A
Authority: CN
Inventors: M·胡贝尔; U·罗特
Original assignee: Kuhn Rikon AG
Current assignee: Kuhn Rikon AG
Priority date: 2007-07-11
Filing date: 2008-06-17
Publication date: 2011-05-25
Anticipated expiration: 2028-06-17
Also published as: FR2918730A1; CN101342051A; CH699625B1

Abstract

An overvoltage safety valve has main body (1) sealed to a hole (23) and provided with at least a rating breaking line (9), which is broken between an inner side (5) and an outer side (6) in rating voltage difference and a channel (3) is formed between the inner side (5) and the outer side (6) for voltage balance. The rating breaking line extends along at least a rubber elastic valve clack (4), which is tight when certain rating breaking line (9) is broken and at least one rating breaking line (9) is closed after pressure balance. Preferably the valve is made of rubber integratively.

Description

Overpressure safety valve

Technical field

The present invention relates to a kind of overpressure safety valve, the member or the container of pressing in being used for to load, especially in pan, using, described overpressure safety valve comprises a main body, this main body sealably is encased in the opening and has specified geosutures, tears during its predetermined pressure differential between the inboard and the outside and opens passage between the inboard and the outside for pressure balance.

Background technology

Overpressure safety valve is known for a long time.For example, kind of an overpressure safety valve is arranged, when surpassing certain pressure in a member or container, a blocking mechanism is raised from valve seat with respect to spring reaction power therein.But the valve of this type normally is comprised of multiple members, and is relatively requiring great effort aspect manufacturing and the installation.Equally also known such overpressure safety valve, it is torn and opens a passage for pressure balance along specified geosutures when reaching predetermined pressure differential.The valve of this type is in document WO 2005/108836, and is known among EP 0 620 393 and the WO2007/052933.The shortcoming of these valves is that it just no longer seals after unlatching and must change safety disc and blowout disk.

Summary of the invention

The objective of the invention is, develop a kind of overpressure safety valve that starts described type, it has avoided the shortcoming mentioned.This purpose realizes by following measure at similar overpressure safety valve, that is: the member or the container of pressing in described overpressure safety valve is used for loading, described overpressure safety valve comprises main body, this main body sealably is encased in the hole and has at least one specified geosutures, tear during the predetermined pressure differential of these specified geosutures between the inboard and the outside and open passage between the inboard and the outside for pressure balance, these specified geosutures extend along the flap of at least one caoutchouc elasticity, tensioning when this flap is torn at described at least one specified geosutures, and after pressure balance closed described at least one specified geosutures.Described at least one flap of pressure differential in by overpressure safety valve of the present invention between the inboard and the outside is tensioned.If a predetermined pressure differential is exceeded, then tensioning causes tearing of specified geosutures.Can equalizing pressure poor by the specified geosutures torn.If the pressure differential balance, then the flap by caoutchouc elasticity is closed hermetically with specified geosutures.Therefore overpressure safety valve can work and once more with respect to the inner seal outside.Fact proved to have the leakage of less comparatively speaking opening pressure by overpressure safety valve of the present invention.For example control amount to 2bar+/-opening pressure of 0.3bar.

Another advantage by overpressure safety valve of the present invention is that this overpressure safety valve can integrally constitute.According to expansion structure of the present invention, valve is whole and is made by the material of caoutchouc elasticity fully basically.This valve for example can be made by synthetic rubber in injection mo(u)lding.Therefore can significantly reduce manufacturing cost.But and by overpressure safety valve small lot of the present invention manufacturing.For example this valve can be made and have 7mm or littler length and same 7mm or littler width.For example it can be installed in 5mm roughly or the littler hole.Because valve is made by synthetic rubber, so its potted component that need not to add can be installed in the hole hermetically.

According to expansion structure of the present invention, synthetic rubber is a silicon rubber.It has higher relatively elasticity and stability.

According to expansion structure of the present invention, has a columniform basically wall by overpressure safety valve of the present invention.Described specified geosutures preferably are arranged on the inboard of this wall.

According to expansion structure of the present invention, the flap of described caoutchouc elasticity is formed on the described wall.This make abnormal cost cheap and dependable performance create possibility.

According to expansion structure of the present invention, have the flap of two caoutchouc elasticities by overpressure safety valve of the present invention, the specified geosutures that described flap radially extends are connected to each other.

According to expansion structure of the present invention, this valve has at least three flaps, and the specified geosutures that radially extend are set between them.These specified geosutures have the starlike shape that has three spokes especially at this.Preferably described three flaps constitute in the same manner and rotate symmetrically and arrange mutually.

According to expansion structure of the present invention, by overpressure safety valve of the present invention have one have around the mounting flange of groove.This makes to be installed to especially simply in the hole of wall for example by overpressure safety valve of the present invention becomes possibility.That this mounting flange particularly is designed to caoutchouc elasticity equally and be preferably self sealss.

In addition, the present invention relates to have pan by valve of the present invention.This pan particularly has the double walled pan, and this double wall has the inner chamber of a sealing.Be installed to by overpressure safety valve of the present invention in the hole of outer wall of wall.Overpressure safety valve is opened and is stoped pan owing to heaving of wall sustains damage in described inner chamber under predetermined pressure.The user who heaves pan of this type also may be dangerous.Therefore also having main advantage by overpressure safety valve of the present invention is more safely to use this class pan.According to expansion structure of the present invention, overpressure safety valve be arranged on accessory below.This valve can not noticeable thus and invisibly be provided with.

Favourable expansion structure of the present invention can draw from dependent claims, following explanation and accompanying drawing.

Description of drawings

Next explain embodiments of the invention in more detail by means of accompanying drawing.

Wherein:

Fig. 1: by the front view of overpressure safety valve of the present invention;

Fig. 2: in Fig. 1 along the cutaway view of hatching II-II;

Fig. 3: the perspective view of pressing the signal of overpressure safety valve of the present invention;

Fig. 4: by another perspective view of overpressure safety valve of the present invention;

Fig. 5: press the schematic diagram of Fig. 3, have the specified geosutures of tearing;

Fig. 6: have another perspective view of tearing specified geosutures by overpressure safety valve of the present invention;

Fig. 7: the view of pressing the outside signal of overpressure safety valve of the present invention;

Fig. 8: by the side view of overpressure safety valve of the present invention;

Fig. 9: the view of pressing the inboard of overpressure safety valve of the present invention;

Figure 10: press the view of Fig. 7, but have the specified geosutures of tearing;

Figure 11: press the view of Fig. 8, but have the specified geosutures of tearing;

Figure 12: the view of the reverse side of overpressure safety valve, but have the specified geosutures of tearing;

Figure 13: have perspective view by the signal of pan of the present invention by overpressure safety valve of the present invention;

Figure 14: the cutaway view of pressing the pan of Figure 13.

The specific embodiment

Overpressure safety valve 1 has the main body 2 that is made of rubber elastic material, special synthetic rubber.Main body 2 has a columniform basically wall 20, and a flange 7 is shaped on this wall.This flange 7 have the outer surface 12 of a taper and one around groove 8, as illustrating especially among Fig. 2.Flange 7 forms the inboard 5 with opening 3, and it extends in the inboard of main body 2 along axis A.Main body 2 has an outer surface 6 in addition, and it has three rotational symmetric and substantially the same grooves 21.Three contact pin 22 are radially extended between in these grooves 21, illustrate especially as Fig. 1.Specified geosutures 9 extend along these contact pin 22, for example shown in Fig. 2 and Fig. 9.Specified geosutures 9 are star arrangement equally.They merge in a bit that is positioned on the axis A.Along these specified geosutures 9, wall thickness for example is 0.05mm.To deserving to be called flap 4 is set same, it meets with specified geosutures 9 in pairs and for example correspondingly is arranged on groove 21 places according to Fig. 3.Therefore these flaps 4 extend obliquely with respect to axis A.With respect to the inclination angle of axis A by drawing among Fig. 2 and preferably less than 45 degree.

Also can consider a kind of like this enforcement pattern, one or two flaps 4 only are set therein.So specified geosutures extend along diametric(al) between the flap 4 of these minute surface symmetric arrangement.Also can consider a kind of like this enforcement pattern in principle, implement to be provided with in pattern more than three, four flaps 4 for example at this.Correspondingly be provided with four or more than four specified geosutures 9 that radially extend, it correspondingly radially extends between two flaps 4.As mentioned above, flap 4 extends obliquely with respect to axis A.But also can consider a kind of like this enforcement pattern, flap 4 is substantially perpendicular to axis A extension therein.

Flap 4 is made up of the material of caoutchouc elasticity equally.It preferably forms on the wall 20, for example can find out among Fig. 2.Flap correspondingly along the line 11 curves inwardly and is configured to similar in appearance to a venous valve (Venenklappe).Each adjacent flap 4 is connected to each other by specified geosutures 9.Therefore specified geosutures 9 extend between two flaps 4.Specified in addition geosutures 9 are positioned at a plane, and this plane constitutes the outside 6.Specified in principle geosutures 9 also can be arranged on a distance apart from the outside 6.Therefore specified geosutures 9 also can extend in wall 20.

Figure 13 and 14 shows a pan 14 that has this kind overpressure safety valve 1.This pan 14 has a wall 16, and this wall has the inner chamber 17 of a sealing, is used for heat insulation between outer wall 16a and inwall 16b.This inner chamber 17 has been full of air.Its around edge 15 and bottom 19 between extend.One hole 23 is set below edge 15 on outer wall 16a, overpressure safety valve 1 is installed therein hermetically.The edge in hole 23 is embedded in the groove 8 and is close to this hermetically.Groove 8 is designed to wall 20 and is close on the outer wall 16a on pressure lower seal ground.Conical surface 12 is positioned at the inside of outer wall 16a and therefore is positioned at the inside of inner chamber 17.Case surface 13 is positioned at 18 outsides, the outside of container 14 on the contrary.For overpressure safety valve 1 is installed, it must only be encased in the hole 23.Installation steps can very simply automatically be carried out.

In cooking process,, make flap 4 expand and also outwards encircle at the inner chamber 17 inner pressure that produce.In contact pin 22, form tension force along specified geosutures 9.If the excess pressure in inner chamber 17 reaches certain value, thereby contact pin 22 is torn along specified geosutures 9.Fig. 5,6,10,11 and 12 shows an overpressure safety valve 1,, specified therein geosutures 9 are torn.In contact pin 22, constitute the port 10 of a star thus, can lead to the outside from inner chamber 17 by this port air.Therefore pressure descends up to reaching basically a rated pressure in inner chamber 17.The predetermined pressure difference of overpressure safety valve 1 action for example is 2bar.But also be feasible at this littler or higher pressure in principle.Overpressure safety valve 1 is so design preferably, makes it preferably move in about scope of 1 to 3bar in about scope of 1 to 5bar.If water penetrates in the intermediate gaps, for example in intermediate gaps 17, can form an excess pressure.This situation seldom takes place, but can not eliminate.The pressure of one this kind will cause bloating of inwall 16a particularly or bottom 19.

If pressure differential reduces after pressure balance, make flap 4 correspondingly lax.It is closed port 10 and is close to mutually along contact pin 22 up to it when flap 4 lax.Valve 1, therefore sealing once more after pressure balance.Pan 14 can continue to use as at ordinary times, and water infiltrates in the intermediate gaps 17 and for example do not have.Under the situation of excess pressure, open overpressure safety valve 1 once more.Opening pressure is lower slightly usually with respect to the overpressure safety valve 1 that has intact specified geosutures 9 at this.But security and sealing can continue to guarantee.Same hope, overpressure safety valve 1 can be changed very fast without doubt and simply.

Overpressure safety valve 1 preferably hides this unshowned accessory, for example leader by one.Therefore overpressure safety valve 1 is invisible from the outside.Overpressure safety valve 1 is by this accessories protecting.Replaceable overpressure safety valve 1 after removing accessory.But this is unessential usually.Figure 13 and 14 only shows a kind of possible application example by overpressure safety valve 1 of the present invention.Simultaneously the application on other equipment of the overpressure safety valve of this type of needs also is feasible.For example this equipment equally also can be coffee machine or with other cooking equipment.But the application on parts, equipment and the machine of industrial use also be feasible and therein overpressure safety valve be essential or conform with purpose.

List of numerals

1 valve

2 main bodys

3 openings

4 flaps

5 inboards

6 outsides

7 flanges

8 grooves

9 specified geosutures

10 ports

11 lines

12 surfaces

13 case surface

14 containers

15 edges

16 walls

The 16a outer wall

The 16b inwall

17 inner chambers

18 outsides

19 bottoms

20 walls

21 grooves

22 contact pin

23 holes

The A axis

Claims

1. overpressure safety valve, the member or the container of pressing in being used for to load, described overpressure safety valve comprises main body (2), this main body sealably is encased in the hole (23) and has at least one specified geosutures (9), tear and open the passage (3) between inboard (5) and the outside (6) during the predetermined pressure differential of these specified geosutures between inboard (5) and the outside (6) for pressure balance, it is characterized in that, these specified geosutures extend along the flap (4) of at least one caoutchouc elasticity, this flap is in described at least one specified geosutures (9) tensioning when tearing, and after pressure balance closed described at least one specified geosutures (9).

2. by the described overpressure safety valve of claim 1, it is characterized in that this overpressure safety valve is integrally constructed.

3. by the described overpressure safety valve of claim 2, it is characterized in that this overpressure safety valve is fully by the material manufacturing of caoutchouc elasticity.

4. by claim 2 or 3 described overpressure safety valves, it is characterized in that this overpressure safety valve is by the synthetic rubber manufacturing.

5. by the described overpressure safety valve of claim 1, it is characterized in that this overpressure safety valve is at least in part by the silicon rubber manufacturing.

6. by each described overpressure safety valve of claim 1 to 3, it is characterized in that this overpressure safety valve has the inside that columniform basically wall (20) and described at least one specified geosutures (9) are arranged on the wall (20) of described overpressure safety valve.

7. by the described overpressure safety valve of claim 6, it is characterized in that the flap of described caoutchouc elasticity (4) is formed on the wall (20) of described overpressure safety valve.

8. by each described overpressure safety valve of claim 1 to 3, it is characterized in that this overpressure safety valve has the flap (4) of at least two caoutchouc elasticities.

9. by the described overpressure safety valve of claim 8, it is characterized in that this overpressure safety valve has three flaps (4).

10. by each described overpressure safety valve of claim 1 to 3, it is characterized in that the flap of described at least one caoutchouc elasticity (4) extends obliquely or vertically with respect to axis (A).

11. by each described overpressure safety valve of claim 1 to 3, it is characterized in that, this overpressure safety valve have one have around the mounting flange (7) of groove (8).

12., it is characterized in that described overpressure safety valve is used for using at pan by the described overpressure safety valve of claim 1.

13. have pan, it is characterized in that this overpressure safety valve is installed in the hole (23) of outer wall (16a) of pan by each described overpressure safety valve of claim 1 to 11.

14., it is characterized in that this pan has a wall (16) that comprises outer wall (16a) and inwall (16b) by the described pan of claim 13, and the inboard (5) of overpressure safety valve (1) is embedded in the inner chamber (17) of sealing of wall (16) of pan.

15. by claim 13 or 14 described pans, it is characterized in that, this overpressure safety valve (1) be arranged on an accessory below.

16. by the described pan of claim 15, it is characterized in that, this overpressure safety valve be arranged on the leader below.