DE202015000118U1 - Safety and relief valve of an airtight pot lid - Google Patents

Abstract

Safety and relief valve of an airtight pot lid, comprising: a rubber gasket for sealing with the circumference of the pot body (1) on the outer circumference of the pot lid (2) and a pot lid (2) formed through-hole (3), characterized in that the safety and Relief valve (4) in this through hole (3) is arranged and a above the pot lid (2) formed over airtight envelope (20) with their outer diameter larger than the through hole (3), a below the airtight envelope (20) arranged air-permeable cavity ( 30) movable upward and downward in the through-hole (3) and including a restriction ring (40) arranged outside the circumference of the above-mentioned air-permeable cavity (30) with the outside diameter larger than the through-hole (3); that when the safety and relief valve (4) generates too much external pressure in the cooking pot, the overpressure can push the airtight shell (20) and the air-permeable cavity (30) upwards, so that the atmosphere in the pot body (1) can be flowed to relieve the airtight condition between the pot lid (2) and the pot body (1) for the purpose of depressurization; in that the above-mentioned airtight shell (20) has a receiving space (21) having an upper opening (22) and a lower opening (23) and being additionally provided between the outside air and the air-permeable cavity (30); and that the receiving space (21) has at least one movement valve (60) which closes the upper opening (22) below the normal level, wherein if too great a negative pressure is produced in the cooking pot, the negative pressure can move the movement valve (60) downwards activate, so that the vacuum in the pot body (1) located through the upper opening (22) and the lower opening (23) of the receiving space (21) for connection to the atmosphere ausschilessbar to the between the pot lid (2) and the To relieve pot body (1) located vacuum.

Description

Domain of utility model

The present invention relates to a safety and relief valve of an airtight pot lid, that when the limit of the located in a pressure cooker external pressure or internal vacuum is exceeded, this safety and relief valve for connection to the atmosphere is automatically opened to the in Pressure cooker pressure balancing advantageous.

Relevant prior art

Known, a conventional pressure cooker, pressure pot and / or pressure cooker works in principle of sealing and steam expansion, thereby the heat in the pot and the cooking process is accelerated so that the cooking time can be shortened. For this reason, the outer circumference of an airtight pot lid is normally associated with a rubber sealing ring, so that when covering the pot lid on the pot opening of the pot body, the air-tight function is achieved by this rubber sealing ring to form an air-tight space in the pot body to prevent heat loss and increase the heat effect ,

When cooking a food with a pot body, the liquid water in the saucepan is soon converted into water vapor. Subsequently, a low pressure is produced in the pot body. If the pot body is not heated again, the boiling temperature is reduced under the low pressure condition to boil the water permanently, thus enabling energy savings.

However, if there is too much external pressure in the cooking pot with a permanent warming of the pot body, there is a risk that the pot lid is ejected randomly. In view of this problem, an airtight pot lid is currently available on the market, which allows automatic pressure relief, this pot lid has a through hole for the arrangement of a normally-closed movement valve. When there is an external overpressure in the pot body, the action of the overpressure automatically activates the movement valve to open the pressure release through-hole to maintain a constant, optimal pressure in the saucepan so as to avoid the danger of ejection from the pot lid.

A disadvantage of o. G. However, known Konsatruktion are that when the pot body is no longer heated, the air pressure in the pot body is reduced, thereby generating an internal negative pressure, so that an opening of the pot lid difficult. In this case, you need to open the movement valve by hand, otherwise there is a risk to damage the pot lid due to ever-increasing negative pressure. A further disadvantage is that in a pot lid made of tempered glass, if the befindlichce in the pot body vacuum exceeds the limit of the pot lid, there is a risk that the pot lid can cause cracking or damage due to a material defect.

In view of the foregoing problems of the prior art, the present inventor seeks to improve the construction of an airtight pot lid with a safety and relief valve to prevent any damage to the pot body, which due to the negative pressure in the pot body Limit value of the pot deck is exceeded.

Demolition of the utility model

An important object of the present utility model is to provide a safety and relief valve of an airtight pot lid available that if the pressure in the pressure cooker located pressure is too large, it can activate an automatic pressure relief. In addition, if the vacuum in the pressure cooker exceeds the preset limit, it can be automatically opened to communicate with the atmosphere to prevent damage to the lid of the pot due to negative pressure.

As a solution, the present utility proposes to provide a safety and relief valve of an airtight pot lid available, which has a rubber sealing ring for sealing with the circumference of the pot body on the outer circumference of the pot lid, which has a through hole. The safety and relief valve is disposed in the through hole and has an airtight shell, which overhangs above the pot lid and whose outer diameter is greater than the through hole. In addition, the safety and relief valve has a below the airtight envelope arranged air-permeable cavity which is movable in the through hole upwards and downwards. Furthermore, the safety and relief valve has a limiting ring, which is arranged below the circumference of the above-mentioned air-permeable cavity with its outer diameter larger than the through hole. If the safety and relief valve generates too much external pressure in the saucepan, the overpressure can cause the airtight casing and the air-permeable cavity Push upwards so that the atmosphere in the pot body can be flowed in order to free the air-tight condition between the pot lid and the pot body for the purpose of pressure relief.

Said airtight shell has a receiving space which has an upper and a lower opening and is additionally attached between the outside air and the air-permeable cavity. In addition, the receiving space has a movement valve which closes the upper opening below the normal level. If too much negative pressure is generated in the saucepan, the negative pressure can move the movement valve downwards, so that the vacuum located in the pot body can flow out through the upper opening and the lower opening of the receiving space for connection to the atmosphere around which between the pot lid and to relieve the vacuum located in the pot body.

To the above construction, when the safety and relief valve of the present utility model in the pressure cooker produces too much external pressure, it is moved by the positive pressure upwards, so that the pot body through the air-permeable cavity with the atmosphere is connectable to the air-tight condition between the pot lid and to free the pot body for the purpose of depressurization. When a vacuum is generated in the saucepan, the safety and relief valve is returned to its original position to seal the through-hole. When the negative pressure is increased until it exceeds the limit value, the moving valve is moved downwards by the negative pressure, so that the negative pressure in the cooking pot can be flowed out through the upper opening and the lower opening of the receiving space for connection to the atmosphere to the pressure in the pot body to be launched.

Preferably, a mutually attractable magnetic member is disposed above the movement valve and correspondingly below the upper opening to close the movement valve below the normal level, the upper opening.

Preferably, the movement valve additionally comprises a spring for supporting the movement valve to close the movement valve, the upper opening below the normal level. Preferably, the movement valve has a collar disposed above the lower opening.

Preferably, the air-permeable cavity is formed tubular so that it is movable in the lateral movement of the airtight envelope upwards.

Preferably, the through hole is arranged with a handle member for actuation by a user centrally above the pot lid. The handle member includes a lid handle having a through-hole and a terminal holder for connecting the through-hole to the through-hole. A corresponding flange-like projection ring with its outer diameter larger than the through hole is formed extending below the terminal mount, wherein a clamping ring is mounted above the through hole of the pot lid on the outer periphery of this connection holder and a damping ring below the through hole of the pot lid and between the corresponding flange-like projection ring effectively clamped and an attachment hole for communicating with the atmosphere is formed on the terminal mount. The above-mentioned safety and relief valve is formed in the mounting hole and exposed to the through hole of the lid handle to allow the arrangement of the safety and relief valve through the mounting hole of the handle member and that indirectly in the through hole.

The present utility model will be better understood with reference to the following detailed description taken in conjunction with the accompanying drawings.

Brief description of the drawings

1 a schematic view illustrating the construction position according to the first embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

2 an exploded perspective view according to the first embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

3 a schematic sectional structure view according to the first embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

4 a schematic view showing the sealing of a through hole according to the first embodiment of a safety and relief valve of a airtight pot lid of the present utility model represents;

5 a schematic view showing the pressure relief at a located in the pot body external pressure resulting upward movement according to the first embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

6 a schematic view showing the sealing of a through hole at a vacuum located in the pot body resulting movement downward according to the first embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

7 a schematic view, the user pushes the airtight shell according to the first embodiment of a safety and relief valve of an airtight pot lid of the present utility model with hand to balance the located in the pot body vacuum;

8th a schematic view illustrating the automatic opening of a movement valve at a located in the pot body vacuum according to the first embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

9 a schematic view illustrating the construction position according to the second embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

10 an exploded perspective view according to the second embodiment of a safety and relief valve of an airtight pot lid of the present utility model;

11 a schematic sectional structure view according to the second embodiment of a safety and relief valve of an airtight pot lid of the present utility model; and

12 a schematic view illustrating the automatic opening of a movement valve at a located in the pot body vacuum according to the second embodiment of a safety and relief valve of an airtight pot lid of the present utility model.

Detailed description of the utility model

How out 1 can be seen, a pressure cooker essentially comprises a pot body 1 and a pot lid 2 , On the outer circumference of this pot lid 2 is a rubber gasket for sealing the circumference of the pot body 1 arranged, with the pot lid 2 in addition a through hole 3 has. How out 9 can be seen, the safety and relief valve 4 independently in the through hole 3 to be ordered. How out 1 to 8th As can be seen, the through hole 3 with a handle element 10 for operation by a user centrally above the pot lid 2 to be ordered. The above safety and relief valve 4 is on the handle element 10 and indirectly in the through hole 3 arranged. Preferably, the main body of the pot lid 2 be made of transparent toughened glass.

The handle element 10 includes a lid handle 12 with a through hole 11 and a connection bracket 13 for connecting the through-hole 3 with the through hole 11 , A corresponding flange-like projection ring 14 with its outer diameter larger than the through hole 3 is extending below the connection bracket 13 formed, with a clamping ring 15 above the through-hole 3 the pot lid 2 on the outer circumference of this connection bracket 13 can be arranged, with a damping ring 16 below the through-hole 3 of the pot lid 2 and between the corresponding flange-like projection ring 14 is effectively clamped, and wherein a mounting hole 17 for connection to the atmosphere on the connection bracket 13 is trained. The above safety and relief valve 4 is in the mounting hole 17 and exposed the through hole 11 the lid handle 12 trained to the arrangement of the safety and relief valve 4 through the mounting hole 17 the handle element 10 and indirectly in the through hole 3 to enable. Preferably, an external thread on the outer wall of the connection bracket 13 arranged, with an internal thread for screwing with this external thread on the inner wall of the through hole 11 the lid handle 12 is arranged.

How out 1 to 3 As can be seen, the through hole becomes 3 with a handle element 10 for actuation by a user centrally above the pot lid 2 arranged. In addition, the handle element 10 a mounting hole 17 for arranging a safety and relief valve 4 on to the safety and relief valve 4 through the mounting hole 17 the handle element 10 and indirectly in the through hole 3 to enable. The above safety and relief valve 4 includes one above the mounting hole 17 outstandingly formed airtight shell 20 with their outer diameter larger than the mounting hole 17 , one below the airtight shell 20 trained air-permeable cavity 30 with its length as the depth of the mounting hole 17 , wherein this air-permeable cavity 30 in the mounting hole 17 is movable up and down, and one below this air permeable cavity 30 with its outer diameter larger than the mounting hole 17 trained boundary ring 40 , Preferably, a plurality of holes 31 on the side wall of the air-permeable cavity 30 through the cavity attached.

With heat increase of the pot body 1 , like out 4 can be seen, the external pressure in the saucepan is gradually generated. How out 5 it can be seen when the overpressure in the cooking pot exceeds the predetermined threshold value, the airtight envelope 20 and the air-permeable cavity 30 moved upward by this overpressure, thus the atmosphere in the pot body 1 infiltrated to the airtight condition between the pot lid 2 and the pot body 1 for the purpose of relieving pressure.

How out 6 can be seen when the internal vacuum with heat reduction of the pot body 1 is generated, the safety and relief valve 4 returned to its original position, leaving the pot lid 2 is re-sealable to facilitate the solution of the flavor of food in the soup, so that the taste of the kitchen can be increased.

How out 7 can be seen, has the above-mentioned airtight shell 20 a recording room 21 on top of an upper opening 22 and a lower opening 23 for connection with the atmosphere and with the air-permeable cavity 30 has. In addition, the recording room has 21 additionally one according to the profile of the recording room 21 arranged positioning cover 50 on, a motion valve 60 owns to the top opening 22 close below the normal level. Preferably, a stop ring 61 with the outer diameter larger than the upper opening 22 of the recording room 21 at the periphery of the movement valve 60 arranged to drop the movement valve 60 from the recording room 21 to prevent.

Preferably, a mutually attractable magnetic member 62 above the movement valve 60 and correspondingly below the upper opening 22 arranged to the movement valve 60 below the normal level the upper opening 22 zuzuschliessen. Preferably, as out 10 to 12 can be seen, the movement valve 60 in addition a spring 63 for supporting the movement valve 60 on to the movement valve 60 the upper opening 22 close below the normal level. Preferably, the movement valve has 60 one above the lower opening 23 arranged collar 64 ,

When mounting the movement valve 60 , the feather 63 and the collar 64 first in the positioning cover 50 arranged. Subsequently, the whole positioning cover 50 in the recording room 21 the airtight envelope 20 be installed.

Preferably, the air-permeable cavity 30 formed tubular. If the saucepan produces too much negative pressure, the user can use the airtight casing 20 with the side of the hand to the air-permeable cavity 30 to move upwards, so that in the pot body 1 located vacuum through the upper opening 22 and the lower opening 23 of the recording room 21 can escape to the connection with the atmosphere, around the itself between the pot lid 2 and the pot body 1 Freeing located vacuum. Preferably, as out 8th can be seen, is the movement valve 60 under the influence of vacuum located in the cooking pot automatically moves downwards, so that the vacuum located in the cooking pot is connected to the atmosphere to balance the pressure in the saucepan.

To the above construction, if the safety and relief valve 4 of the present utility model in the pressure cooker produces too much external pressure, it is moved by the pressure upwards, thus the pot body 1 through the air-permeable cavity 30 connectable to the atmosphere, to the airtight condition between the pot lid 2 and the pot body 1 for the purpose of relieving pressure. When a vacuum is generated in the cooking pot, the safety and relief valve becomes 4 advantageously returned to its original position to the through hole 3 seal. When the negative pressure is increased until it exceeds the limit value, the movement valve becomes 60 moved by the negative pressure down, so that the vacuum located in the cooking pot through the upper opening 22 and the lower opening 23 of the recording room 21 for connection with the atmosphere can flow out to the pressure in the pot body 1 to be launched.

The present utility model relates to a safety and relief valve 4 an airtight pot lid 2 which, when the limit value of the external or internal vacuum present in a pressure cooker is exceeded, this safety and relief valve for connection to the atmosphere is automatically opened to balance the pressure in the pressure cooker to a large negative pressure avoid damaging the pot lid 2 is hampered, characterized in that the pot lid 2 a through hole 3 for the arrangement of the safety and relief valve 4 having; and that the safety and relief valve 4 a normally-closed movement valve 60 and when the limit of the vacuum in the pressure cooker is exceeded, the movement valve becomes 60 automatically open, allowing the air in the pot body 1 is flowable to balance the pressure in the cooking pot advantageous.

Although only selected preferred embodiments have been used to explain this utility model, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made therein without departing from the scope of the present invention as defined by the appended claims is. Furthermore, the foregoing description of the embodiments of the present invention is for the purpose of illustration only, and not for the purpose of limiting the invention, which is defined by the appended claims and their equivalents.

LIST OF REFERENCE NUMBERS

1

pot body

2

pot lid

3

Through Hole

4

Safety and relief valve

10

Handle element

11

Through Hole

12

lid handle

13

connector bracket

14

a corresponding flange-like projection ring

15

clamping ring

16

damping ring

17

mounting hole

20

airtight shell

21

accommodation space

22

upper opening

23

lower opening

30

An air-permeable cavity

31

drilling

40

limiting ring

50

positioning cover

60

traveling valve

61

stop ring

62

magnetic component

63

feather

64

collar

Claims (10)

Safety and relief valve of an airtight pot lid, comprising: a rubber gasket for sealing with the circumference of the pot body ( 1 ) on the outer circumference of the pot lid ( 2 ) and one on the pot lid ( 2 ) formed through-hole ( 3 ), characterized in that the safety and relief valve ( 4 ) in this through hole ( 3 ) is arranged and one above the pot lid ( 2 ) airtight envelope ( 20 ) with their outer diameter larger than the through hole ( 3 ), one below the airtight envelope ( 20 ) arranged air-permeable cavity ( 30 ) in the through hole ( 3 ) is movable up and down, and one below the circumference of the above-mentioned air-permeable cavity (FIG. 30 ) ordered boundary ring ( 40 ) with its outer diameter larger than the through hole ( 3 ); that if the safety and relief valve ( 4 ) creates too much external pressure in the cooking pot, the overpressure can thereby the airtight envelope ( 20 ) and the air-permeable cavity ( 30 ), so that the atmosphere in the pot body ( 1 ) is introduced to the airtight condition between the pot lid ( 2 ) and the pot body ( 1 ) for the purpose of relieving pressure; that the above-mentioned airtight envelope ( 20 ) a recording room ( 21 ) having an upper opening ( 22 ) and a lower opening ( 23 ) and in addition between the outside air and the air-permeable cavity ( 30 ) is mounted therethrough; and that the recording room ( 21 ) at least one movement valve ( 60 ), which is below the normal level, the upper opening ( 22 ), wherein when too much negative pressure is generated in the cooking pot, the negative pressure can be a movement of the movement valve ( 60 ) down, so that in the pot body ( 1 ) located vacuum through the upper opening ( 22 ) and the lower opening ( 23 ) of the recording room ( 21 ) for connection to the atmosphere, around which between the pot lid ( 2 ) and the pot body ( 1 ) Relieve negative pressure. Safety and relief valve of an airtight pot lid according to claim 1, characterized in that a mutually attractable magnetic component ( 62 ) above the movement valve ( 60 ) and correspondingly below the upper opening ( 22 ) is arranged around the movement valve ( 60 ) below the normal level, the upper opening ( 22 ). Safety and relief valve of an airtight pot lid according to claim 1, characterized in that the movement valve ( 60 ) additionally a spring ( 63 ) and a collar ( 64 ), wherein the spring ( 63 ) the movement valve ( 60 ) to the movement valve ( 60 ) the upper opening ( 22 ) below the normal level and the adjusting ring ( 64 ) above the lower opening ( 23 ) is arranged. Safety and relief valve of an airtight pot lid according to claim 2 or 3, characterized in that the receiving space ( 21 ) the airtight envelope ( 20 ) additionally one according to the profile of the recording room ( 21 ) arranged Positioning cover ( 50 ), wherein the movement valve ( 60 ) in this positioning cover ( 50 ) is arranged. Safety and relief valve of an airtight pot lid according to claim 2 or 3, characterized in that a stop ring ( 61 ) with its outer diameter larger than the upper opening ( 22 ) of the recording room ( 21 ) on the circumference of the movement valve ( 60 ) is arranged. Safety and relief valve of an airtight pot lid according to claim 2 or 3, characterized in that a plurality of holes ( 31 ) on the side wall of the air-permeable cavity ( 30 ) Through the cavity are mounted Safety and relief valve of an airtight pot lid according to claim 2 or 3, characterized in that the air-permeable cavity ( 30 ) is tubular and he in the lateral movement of the airtight envelope ( 20 ) is movable upwards. Safety and relief valve of an airtight pot lid according to claim 2 or 3, characterized in that the through hole ( 3 ) with a handle element ( 10 ) for actuation by the user centrally obehalb the pot lid ( 2 ) is arranged; that said handle element ( 10 ) a lid handle ( 12 ) with a through hole ( 11 ) and a connection bracket ( 13 ) for connecting the through-hole ( 3 ) with the through hole ( 11 ) having; that a corresponding flange-like projection ring ( 14 ) with its outer diameter larger than the through hole ( 3 ) extending below the connection bracket ( 13 ) is trained; that a clamping ring ( 15 ) above the through-hole ( 3 ) of the pot lid ( 2 ) on the outer circumference of this connection bracket ( 13 ) is arranged; that a damping ring ( 16 ) below the through-hole ( 3 ) of the pot lid ( 2 ) and between the corresponding flange-like projection ring ( 14 ) is arranged effectively clamped; that a mounting hole ( 17 ) for connection to the atmosphere on the connection bracket ( 13 ) is trained; and that the above-mentioned safety and relief valve ( 4 ) in the mounting hole ( 17 ) and exposed to the through hole ( 11 ) of the lid handle ( 12 ) is formed to the arrangement of the safety and relief valve ( 4 ) through the mounting hole ( 17 ) of the handle element ( 10 ) and indirectly in the through hole ( 3 ). Safety and relief valve of an airtight pot lid according to claim 8, characterized in that an external thread on the outer wall of the connection holder ( 13 ), wherein an internal thread for screwing with this external thread on the inner wall of the through hole ( 11 ) of the lid handle ( 12 ) is arranged. Safety and relief valve of an airtight pot lid according to claim 2 or 3, characterized in that the main part of the pot lid ( 2 ) is made of transparent toughened glass.

Images