CN111447862B

CN111447862B - Pressure valve for pressure cooker

Info

Publication number: CN111447862B
Application number: CN201880071174.3A
Authority: CN
Inventors: M·德巴斯托斯雷斯波图加尔
Original assignee: Gero Vertriebs GmbH
Current assignee: Gero Vertriebs GmbH
Priority date: 2017-11-03
Filing date: 2018-10-30
Publication date: 2021-08-17
Anticipated expiration: 2038-10-30
Also published as: CN111447862A; DE102017125698B3; WO2019086393A1

Abstract

The invention relates to a pressure valve (2) for a lid (4) of a pressure cooker, having at least two pressure levels which can be set by means of a rotary handle (6), consisting of a valve outlet tube (24) which can be connected to the lid (4), a valve body (30) which surrounds the valve outlet tube at a distance, and a spring-loaded sealing body (28) which interacts with the outlet cross section of the valve outlet tube (24). A pressure valve that can be adjusted very easily and specifically should be realized. This is achieved by: the rotary handle (6) has a rotary lever part (8) which can be rotated relative to a valve body (30) which can be firmly connected to the cover (4), a spring-loaded position bolt (40) is arranged on the lower side of the rotary lever part (8) which faces in the direction of the valve body (30), and the valve body (30) has a detent (42) on its upper side facing the rotary lever part (8) for selectively receiving the position bolt (40).

Description

Pressure valve for pressure cooker

Technical Field

The invention relates to a pressure valve for a lid of a pressure cooker, having at least two pressure levels which can be adjusted by means of a rotary handle, consisting of a valve outlet pipe which can be connected to the lid, a valve body which surrounds the valve outlet pipe at a distance, and a spring-loaded sealing body which interacts with the outlet cross section of the valve outlet pipe.

Background

Known pressure valves of the above-mentioned type are often difficult to operate and run the risk of skipping the desired pressure level so that the pressure is adjusted incorrectly.

Disclosure of Invention

The invention is therefore based on the object of creating a pressure valve which can be adjusted very easily and in a targeted manner.

According to the invention, this object is achieved by: the rotary handle has a rotary lever part which can be rotated relative to a valve body which can be firmly connected to the cover, a spring-loaded position bolt is arranged on the lower side of the rotary lever part in the direction of the valve body, and the valve body has a latching groove on its upper side facing the rotary lever part for selectively receiving the position bolt.

Alternatively, the detent can of course also be arranged on the underside of the rotary lever part, and the position bolt can be arranged on the valve body. However, the above-described solution can be configured simpler and more reliable in construction.

The rotary lever part is expediently configured transversely to the valve axis to be divided into an upper half and a lower half, wherein the two halves of the rotary lever part can be firmly connected to one another. In this case, in the upper half of the rotary lever part, a receiving cylinder for a respective one of the position bolts and for a pressure spring acting on the position bolt can be provided, while in the lower half of the rotary lever part a through-opening for the position bolt interacting with the receiving groove is formed.

In order to hold the position pegs in a captive manner on the rotary lever part in the assembled state of the rotary lever part, the position pegs can be provided with a protruding, encircling retaining ring or the like, which limits the outward movement of the position pegs by means of through-holes provided in the lower half of the rotary lever part.

In order to achieve a targeted and gentle engagement of the position bolt in the catch, the position bolt can be provided with a hemispherical end, while the catch has a corresponding hemispherical cavity for receiving and holding the position bolt.

In a preferred embodiment of the invention, three position pegs arranged offset by 120 ° with respect to one another are provided on the rotary lever part.

Accordingly, six locking grooves arranged offset by 60 ° are provided on the valve body for selectively receiving the position pegs.

The two halves of the rotary lever part can be detachably connected to each other by means of bolts, so that the assembly, in particular the insertion of the position bolt, can be made very simple.

The valve outlet duct is preferably surrounded by a pressure tube which can be displaced axially relative to the valve outlet duct, the pressure body being held in an upper region of the pressure tube which projects beyond the valve outlet duct.

The pressure tube can expediently be displaced in a limited manner relative to the pressure cylinder surrounding it against the force of the pressure spring.

The pressure cylinder surrounding the pressure pipe is expediently rotatable together with the rotary rod part, wherein the inner region of the pressure cylinder has a projecting edge provided with a step, wherein at least one fixed knob (Noppe) is provided on the inner wall of the valve body, which interacts with the stepped edge of the pressure cylinder and displaces the pressure cylinder in the axial direction of the valve outlet pipe when the rotary rod part rotates.

For symmetry reasons and to ensure stable actuation, the projecting edge of the pressure cylinder can have two stepped regions offset by 180 ° from one another, wherein two knobs arranged offset by 180 ° in the circumferential direction are provided on the inner wall of the valve body, which interact with the two stepped regions of the projecting edge of the pressure cylinder.

Furthermore, the circumferential stepped edge of the pressure cylinder can have a notch next to the lowest step, which is slightly wider than the width of the nub arranged on the inner side of the valve body. This enables the rotary lever element to be lifted from the pressure valve, which is otherwise firmly connected to the cover, in order to clean the components.

The sealing body is preferably designed as a separate component and can be fixed in the upper region of the pressure tube projecting out of the valve outlet tube.

The sealing body can be made of an elastic material, for example rubber, silicone or the like.

Drawings

The invention is illustrated by way of example in the accompanying drawings and explained in detail with reference thereto. The figures show:

figure 1 a preferred embodiment of a pressure valve according to the invention,

fig. 2 is an exploded view of all the components of the pressure valve according to fig. 1 in a slightly reduced illustration, fig. 3 is a perspective view of the valve body,

FIG. 4 is a perspective view of a pressure cylinder, an

Fig. 5 is a view on an enlarged scale of the position bolt.

Detailed Description

Fig. 1 of the drawings shows a cross section through a pressure valve 2 according to the invention, wherein the pressure valve 2 is firmly fixed to a lid 4 of a pressure cooker, not shown in the drawings.

The parts belonging to the pressure valve 2 according to the invention are shown in the exploded view shown in fig. 2.

The upper region of the pressure valve 2 is formed by a rotary handle 6, with which the pressure level can be adjusted.

The swivel handle 6 consists of a swivel lever part 8 which can be pivoted about a valve axis 10. For example, a radially outwardly projecting hand lever 12 for pivoting.

As can be seen from fig. 1 and in particular from fig. 2, the rotary lever element 8 is formed transversely to the valve axis 10 as a division into an upper half 14 and a lower half 16. The two

halves

14 and 16 of the rotary lever part 8 can be firmly connected to one another, to be precise by means of a screw 18 which is screwed from below through the lower half 12 into the upper half 14.

As can be seen from fig. 2, three screws 18 are provided, which are screwed in each case offset by 120 °.

According to fig. 2, the pressure valve 2 according to the invention also comprises a pressure cylinder 20, a pressure spring 22 arranged therein, a valve outlet 24, and a pressure tube 26 surrounding the valve outlet, in the upper region of which a sealing body 28 is fastened, which protrudes beyond the valve outlet 24. The sealing body is made of an elastic material, such as rubber, silicone or the like.

The pressure valve 2 according to the invention also comprises a cylindrical valve body 30, which can be firmly connected to the cover 4 together with the valve outlet line 24. A cap nut 32 is used to secure these components and is screwed onto a threaded end 34 of the valve outlet tube 24 that protrudes through the cap 4. The cap nut 32 is provided with a lateral through opening 36 which is connected to the inner cross section of the valve outlet tube 24 and thus connects the interior of the pot with the outside environment. By fixing the valve outlet tube to the cover 4, the valve body 30 is also pressed against the cover and secured against rotation relative to the cover 4 by means of the catch element 38. A sealing ring 39 is interposed between the cap nut 32 and the underside of the cover 4.

An important feature of the pressure valve 2 according to the invention is the smooth and targeted pivoting of the swivel handle 6. For this purpose, a spring-loaded position bolt 40 is arranged on the lower side of the rotary lever part facing the valve body 30, while the valve body 30 has, on its upper side facing the rotary lever part 8, a latching groove 42 for selectively receiving the position bolt 40.

The position peg 40 is arranged between the

halves

14 and 16 of the rotary lever element 8. For this purpose, in the upper half 14 of the rotary lever element 8, a receiving cylinder is provided for each position bolt 40 and for a pressure spring 46 which acts on said position bolt. A through-opening 48 for the positioning pin 40 interacting with the latching recess 42 is formed in the lower half 16 of the rotary lever element 8.

The position bolt 40 is provided with a projecting, encircling retaining ring 50 which delimits the outward movement of the position bolt 40 by means of a through-hole 48 provided in the lower half 16 of the rotary lever part 8.

In the exemplary embodiment shown in the figures, three position pegs 40 are provided, which are offset by 120 ° with respect to one another.

The valve body 30 shown in detail in fig. 3 is provided with six locking grooves 42, which are arranged offset from one another by 60 °, in each case, for selectively receiving the position pegs 40.

In order to ensure an optimum snap-in process of the position bolt 40 into the catch 42, the position bolt 40 is provided with a hemispherical end 41, while the catch 42 has a corresponding hemispherical cavity for receiving and retaining the position bolt 40.

As can be gathered in particular from fig. 1, the pressure tube 26 surrounding the outlet tube of the valve can be axially displaced relative to the latter. The sealing body 28 can thereby also be slightly displaced in the axial direction relative to the outlet end of the valve outlet pipe 24, so that the respective pressure level can be adjusted.

The pressure tube 26 can be displaced not only relative to the valve outlet tube 24 but also relative to the pressure cylinder 20 against the pressure of the pressure spring 22.

The pressure cylinder 20 enclosing the pressure tube 26 is rotatable together with the rotary rod element 8. As can be seen in particular from fig. 4, the pressure cylinder 20 has in its lower region a projecting edge 58 provided with

steps

52, 54 and 56, wherein the steps repeat on opposite sides at 180 °.

On the inner wall of valve body 28, one projection 60 is arranged on each of the opposite sides, which projection interacts with stepped projecting edge 58 of pressure cylinder 20. Thus, when the rotary lever element 8 is rotated, the pressure cylinder 20 is displaced in the axial direction of the valve outlet conduit 24, so that the sealing body 28 is lifted more or less away from the outlet cross section of the valve outlet conduit 24.

In the embodiment shown in fig. 4 of the drawings, the projecting edge 58 of pressure tube 20 has three

steps

52, 54 and 56. Since the steps are arranged on opposite sides of the pressure cylinder 20, the pressure cylinder 20 is displaced uniformly so that no skewing can occur.

At the lowest step 56 next to the projecting edge 58, the pressure cylinder 20 has on opposite sides in each case one notch 62 which is slightly wider than the width of the nub 60 arranged on the inner side of the valve body 30. If the notch 62 is exactly aligned with the knob 60, the entire rotary handle 6 can be lifted from the upper end of the pressure valve 2, for example for cleaning purposes.

The higher steps 52 and 54 are provided for regulating the higher pressure, while the lower step 56 is used for venting, i.e. in this position of the twist grip 6, the overpressure can be let out of the pot. Thereafter, the notch 62 of the pressure cylinder 20 can coincide with the knob 60 of the valve body and the rotary handle 6 can be removed upwards.

The pressure valve according to the invention is a valve which can be adjusted manually very conveniently and specifically to a defined pressure in the interior of the pressure cooker. Of course, in addition to the pressure valve 2, a common safety valve must be provided in the lid 4 of the pressure cooker in order to cope with any danger.

List of reference numerals

2 pressure valve

4 cover

6 rotating handle

8 rotating rod Member

10 valve axis

12 hand lever

14 Upper half of the rotating lever member

16 lower half of the swivel mast section

18 bolt

20 pressure cylinder

22 pressure spring

24 valve output pipe

26 pressure pipe

28 seal body

30 valve body

32 cap nut

34 threaded end

36 lateral through opening

38 clamping element

39 sealing ring

40 position bolt

41 hemispherical end portion

42 card slot

44 receiving cylinder

46 pressure spring

48 through hole

50 retaining ring

52 steps

Step 54

56 steps

58 projecting edge

60 protruding node

62 notch

Claims

1. A pressure valve (2) for a cover (4) of a pressure cooker, having at least two pressure levels, which can be set by means of a rotary handle (6), consisting of a valve outlet tube (24) which can be connected to the cover (4), a valve body (30) which surrounds it at a distance, and a spring-loaded sealing body (28) which interacts with the outlet cross section of the valve outlet tube (24), characterized in that the rotary handle (6) has a rotary lever part (8) which can be rotated relative to the valve body (30) which can be firmly connected to the cover (4), a spring-loaded position bolt (40) being arranged on the underside of the rotary lever part (8) in the direction of the valve body (30), and the valve body (30) having on its upper side facing the rotary lever part (8) a position bolt (40) for selectively receiving the position bolt A slot (42) of the bolt (40).

2. Pressure valve according to claim 1, characterized in that the rotary lever part (8) is divided transversely to the valve axis (10) into an upper half (14) and a lower half (16), the two halves (14, 16) of the rotary lever part (8) being able to be firmly connected to one another, in the upper half (14) of the rotary lever part (8) there being provided a receiving cylinder (44) for a position bolt (40) in each case and for a pressure spring (46) which acts on it, and in the lower half (16) of the rotary lever part (8) there being constructed a through-opening (48) for the position bolt (40) which interacts with the detent (42).

3. A pressure valve according to claim 2, characterised in that the position bolt (40) is provided with a protruding, encircling retaining ring (50) which delimits the outward movement of the position bolt (40) by means of a through hole (48) provided in the lower half (16) of the rotary rod part (8).

4. A pressure valve according to any of claims 1-3, characterized in that the position peg (40) is provided with a hemispherical end (41) and the catch (42) has a corresponding hemispherical cavity for receiving and retaining the position peg (40).

5. A pressure valve according to any one of claims 1-3, characterised in that three position pegs (40) are provided, arranged mutually offset by 120 °.

6. A pressure valve according to claim 5, characterized in that six catch grooves (42) arranged offset from one another by 60 ° are provided on the valve body (30) for selectively receiving the position pegs (40).

7. A pressure valve according to claim 2 or 3, characterized in that the two halves (14, 16) of the rotary rod member (8) are detachably connectable to each other by means of a bolt (18).

8. A pressure valve as claimed in any one of claims 1 to 3, characterized in that the valve outlet conduit (24) is surrounded by a pressure conduit (26) which is axially displaceable relative to the valve outlet conduit, the sealing body (28) being held in an upper region of the pressure conduit which projects beyond the valve outlet conduit (24).

9. A pressure valve as claimed in claim 8, characterized in that the pressure tube (26) is displaceable in a limited manner relative to a pressure cylinder (20) surrounding it against the force of the pressure spring (22).

10. A pressure valve according to claim 9, characterized in that a pressure cylinder (20) which surrounds the pressure pipe (26) is rotatable together with the rotary rod component (8), and in that a lower region of the pressure cylinder (20) has a projecting edge (58) provided with a step (52, 54, 56), and in that on the inner wall of the valve body (30) at least one fixed projection (60) is provided which cooperates with the stepped projecting edge (58) of the pressure cylinder (20) and displaces the pressure cylinder (20) in the axial direction of the valve outlet pipe (24) upon rotation of the rotary rod component (8).

11. Pressure valve according to claim 10, characterized in that the projecting edge (58) of the pressure cylinder (20) has two regions which are offset by 180 ° from one another and which are provided with a step (52, 54, 56), and in that two knobs (60) which are arranged offset by 180 ° in the circumferential direction are provided on the inner wall of the valve body (30) and which interact with the two stepped regions of the projecting edge (58) of the pressure cylinder (20).

12. A pressure valve according to claim 10 or 11, characterized in that the stepped projecting edge (58) of the pressure cylinder (20) has a notch (62) at the next lowest step (56), which is slightly wider than the width of a burl (60) provided on the inner side of the valve body (30).

13. A pressure valve according to claim 8, characterized in that the sealing body (28) is constructed as a separate component and is fixed in the upper region of the pressure tube (26).

14. Pressure valve according to claim 13, characterized in that the sealing body (28) consists of an elastic material.

15. A pressure valve according to claim 14, wherein the resilient material is rubber or silicone.