KR200336743Y1 - Apparatus for controlling internal pressure of electric pressure rice cooker - Google Patents

Abstract

The present invention relates to an internal pressure control device of an electric pressure cooker that can control the internal pressure of the inner pot cooked rice, in particular to regulate the steam pressure in the inner pot constant and at the same time operate according to the electrical signal steam inside the inner pot It includes an automatic steam discharge device for discharging the outside and the safety steam discharge device for discharging the steam inside the inner pot to the outside when the steam pressure inside the inner pot is increased above the critical pressure, the automatic steam discharge device and the safety steam Even if the discharge device malfunctions or breaks down, steam can escape to the outside through a separate emergency steam discharge means, thereby increasing user safety and increasing convenience of use.

Description

Internal pressure control device for electric pressure cooker {APPARATUS FOR CONTROLLING INTERNAL PRESSURE OF ELECTRIC PRESSURE RICE COOKER}

The present invention relates to an internal pressure control device of an electric pressure cooker that can control the internal pressure of the inner pot cooked rice, in particular to regulate the steam pressure in the inner pot constant and at the same time operate according to the electrical signal steam inside the inner pot Automatic steam discharge device for discharging the gas to the outside and a safety steam discharge device for discharging the steam inside the inner pot to the outside when the steam pressure inside the inner pot is increased above the critical pressure, automatic steam discharge device and safe steam discharge Even if the device malfunctions or breaks down, the steam can be safely discharged to the outside, increasing the safety of the user and increasing the ease of use.

In general, the electric pressure cooker is a cooking utensil for cooking food that is not boiled at normal pressure in a short time by increasing the pressure in the pot by heating the pot in an enclosed space by an electric heater.

The electric pressure cooker is configured to include a working pressure adjusting device to maintain a constant pressure inside the pot, the working pressure adjusting device is divided into an external type using a pressure weight installed on the outside, and a built-in type using a spring installed on the inside. Can be.

The first embodiment of the electric pressure cooker according to the prior art is that the external working pressure adjusting device is provided as shown in Figs. 1 to 2, the inner pot (2) is cooked inside the main body (not shown) is built The outer lid 4 is installed on the upper surface of the main body so as to be openable and closed, and the inner lid cover 6 and the inner lid 8 are provided with a predetermined space inside the outer lid 4, and the outer lid ( 4) and the pressure regulating valve 12 is installed to penetrate the inner lid cover 6 and the inner lid 8, and the pressure weight 14 is installed on the upper end of the pressure regulating valve 12.

Of course, the upper lid 4 is provided with a lid coupling handle 16 to seal the inner pot 2 to be fixed to the main body in close contact with the main body according to the user operation, the It is further provided with an electric heater (not shown) in contact with the inner pot (2) outside to heat the inner pot (2).

In addition, the pressure lifting bar 18 formed in a 'b' shape to support a part of the lower end of the pressure weight 14 is installed to penetrate the outer lid 4 and the inner cover 6, the pressure lifting bar ( One end is connected to the lower side of the 18) and the pressure weight lifting lever 19 is installed so that the center portion is hinged to the inner lid cover 6 so that the pressure weight when the steam pressure inside the inner pot 2 is higher than the set pressure. (14) Lift the steam out.

At this time, the pressure of the steam in the inner pot (2) is adjustable according to the weight of the pressure weight (14).

Then, the inner lid (8) after the cooking is completed, the automatic steam discharge device 22 is installed to operate in the process of steaming to discharge the steam inside the inner pot (2) to the outside and the inner lid (8) the safety steam discharge device for discharging the steam in the inner pot (2) to the space between the inner lid cover (6) and the inner lid (8) when the steam pressure in the inner pot (2) is more than the critical pressure (Not shown) is further installed.

Electric pressure cooker as described above is the pressure control valve 12 is clogged, or if the automatic steam discharge device 22 and the safety steam discharge device malfunctions or breaks the pressure weight 14 to the pressure control valve 12 After removing it, it can be drilled using a safety pin (not shown) to release steam to the outside.

However, as described above, the electric pressure cooker equipped with an external use pressure adjusting device generates noise due to the operation of the pressure weight 14 and the pressure weight 14 is configured to protrude in appearance, thereby degrading aesthetics from the design side. There is a problem.

Therefore, in recent years, an electric pressure cooker having a built-in operating pressure adjusting device for adjusting the operating pressure inside the product by using the elastic force of the spring has been proposed. Specifically, as shown in FIG. The inner pot 32 is formed, the outer lid 34 is installed on the upper surface of the main body 31 so as to be opened and closed, the inner lid cover 36 and the inner lid (with a predetermined space inside the outer lid 34) 38) is installed, the inner cover 38 is provided with a built-in operating pressure adjusting device 42.

Of course, an inner heater (not shown) is further provided to contact the outside of the inner pot 32 to heat the inner pot 32, and reference numerals 44 and 44a, which are not shown, indicate steam discharge caps and steam discharge caps, respectively. do.

Specifically, the use pressure adjusting device 42 is installed to communicate with the inner lid 38 to form an accommodation space therein and a vapor discharge passage formed therein, and disposed inside the housing to provide the steam discharge passage. A valve for opening and closing, and a spring for elastically pressing the valve to block the steam discharge passage in the housing, the pressure of the steam in the inner pot 32 is adjustable according to the elastic force of the spring.

In addition, after the cooking is completed, the inner lid 38 is operated in the process of steaming the automatic steam discharge device 46 and the inner pot 32 to discharge the steam inside the inner pot 32 to the outside. When the steam pressure of the critical pressure or more is provided with a safety vapor discharge device 48 for discharging the steam in the inner pot 32 into the space between the inner lid cover 36 and the inner lid 38, the automatic The steam discharge device 46 is configured in the form of a solenoid valve and a spring to operate in accordance with an electrical signal to discharge steam.

Looking at the process of cooking in the electric pressure cooker equipped with a built-in operating pressure adjustment device as described above, the inner pot 32 is heated as the electric heater is operated to generate steam as the rice and water are heated therein, As a result, the pressure inside the inner pot 32 is increased.

At this time, when the steam pressure in the inner pot 32 reaches a set pressure, the operating pressure adjusting device 42 is operated to open so that the steam in the inner pot 32 escapes to the outside, the inner pot 32 The steam pressure inside can be kept constant while the rice is steaming.

Then, the automatic steam discharge device 46 is opened by the spring elastic force when the power input to the solenoid valve is cut off to discharge the steam in the inner pot 32 to the outside.

On the other hand, the safety vapor discharge device 48 maintains the normally closed state by the elastic force of the spring, when the pressure inside the inner pot 32 reaches a critical pressure higher than the set pressure resistance to the spring elastic force by the pressure Open to discharge the steam inside the inner pot 32 into the space between the inner lid cover 36 and the inner lid 38.

Of course, the safety vapor discharge device 48, the outlet formed to escape the steam in the inner cover 38 is blocked, or the operating pressure adjusting device 42 and the automatic steam discharge device 46 malfunction or failure. In addition, to prevent the explosion by excessively rising the steam pressure inside the inner pot (32). Therefore, the spring included in the safety vapor discharge device 48 is configured to have a spring force greater than the spring included in the working pressure adjusting device 42.

However, the electric pressure cooker provided with the built-in operating pressure adjusting device 42 as described above, the outlet of the inner cover 48 is blocked and at the same time malfunction of the operating pressure adjusting device 42 and the automatic steam discharge device 46 or In case of failure, the steam inside the inner pot 32 cannot be discharged to the outside, and when the consumer forcibly opens the outer lid 34 in a state in which the steam pressure inside the inner pot 32 is excessively high, a safety accident There is a problem that may result.

The present invention was devised to solve the above-mentioned problems of the prior art, and provides an electric pressure cooker to which the built-in pressure adjusting device is applied, which has excellent operating noise reduction performance and high consumer preference in terms of design. It is an object of the present invention to provide an internal pressure control device of an electric pressure cooker which is provided with a discharge means to prevent a user's safety accident in advance.

1 is a plan view schematically showing a first embodiment of an electric pressure cooker according to the prior art,

Figure 2 is a side view schematically showing a part of the first embodiment of the electric pressure cooker according to the prior art,

Figure 3 is a side view schematically showing a part of the second embodiment of the electric pressure cooker according to the prior art,

4 and 5 are a plan view and a side view schematically showing the internal pressure control device of the electric pressure cooker according to the present invention,

6a and 6b is a side view showing a closed state and an open state of the safety sealing packing in the internal pressure control device of the electric pressure cooker according to the present invention.

<Explanation of symbols on main parts of the drawings>

54: outer lid 56: inner lid cover

58: inner cover 60: internal pressure control device

62: automatic steam discharge device 64: safety steam discharge device

66: steam discharge passage 67: steam discharge hole

68: safety sealing packing 72: steam discharge cap

74: safety pin

The internal pressure control device of the electric pressure cooker according to the present invention for solving the above problems is the inner pot which is built in the main body and cooking, the outer lid installed to open and close the main body, and is installed to be fixed inside the outer lid The inner lid cover is detachably installed so as to be spaced apart from the inner lid cover and covers the inner pot to form a pressure space inside the inner pot during cooking, and the inner lid is closed and the inner lid is installed on the inner lid so as to be provided by the elastic force. When the steam pressure is higher than the set pressure inside the inner pot to discharge the steam to the outside to maintain the inside of the inner pot at a constant pressure, or in accordance with an electrical signal to open the automatic steam discharge device for discharging steam to the outside, and the automatic steam A vapor discharge passage installed through the inner cover and the outer cover so as to communicate with the discharge device; A steam discharge hole formed in the inner lid to communicate with the steam discharge passage, and is installed to block the steam discharge hole, characterized in that consisting of a safety sealing packing is installed to open the steam discharge hole when an external force is applied.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described in detail.

The internal pressure control device of the electric pressure cooker according to the present invention is formed as one assembly as shown in Figure 4 and 5 and installed so that the upper and lower ends communicate with the outer lid 54 and the inner lid 58, respectively. It is installed to penetrate the inner lid cover 56 located between the outer lid 54 and the inner lid 58.

Usually, the electric pressure cooker is installed to open and close the outer lid 54 on the upper surface of the main body (not shown) that accommodates the inner pot (not shown) for cooking rice, the inner lid cover to be fixed inside the outer lid 54 In addition to the 56 is installed, the inner lid 58 is installed to be detachable at a predetermined interval inside the inner lid cover 56, wherein the internal pressure control device 60 and the outer lid 54 It is installed over the inner lid cover 56 and the inner lid 58.

Specifically, the internal pressure control device 60 is installed so as to communicate with the inner cover 58 is opened when the steam pressure is higher than the set pressure inside the inner pot by the elastic force to discharge the steam to the outside to keep the inner pot constant The automatic steam discharge device 62 which maintains the pressure or is opened in accordance with an electrical signal and discharges steam to the outside, and is installed to communicate with the inner lid 58, the steam pressure inside the inner pot by the elastic force is automatically Safety steam discharge device 64 and the automatic steam that is open when the pressure is greater than the set pressure of the steam discharge device 62 to discharge the steam into the space between the inner cover cover 56 and the inner cover 58, and the automatic steam A steam discharge passage 66 installed through the inner lid cover 56 and the outer lid 54 so as to communicate with the discharge device 62, and the inner lid 58 so as to communicate with the steam discharge passage 66. Brother If the steam discharge hole (67), a stop is provided to give the steam discharge hole (67) which external force is applied it comprises a safety seal packing 68 is installed so as to open the steam discharge hole (67).

Here, the automatic steam discharge device 62 is configured to include a solenoid valve as well as a built-in spring, when the steam pressure inside the inner pot is higher than the set pressure is opened by the elastic force of the spring to discharge steam into the steam discharge passage 66. It can be discharged to the outside according to, and when the power supplied to the solenoid valve is cut off by the electrical signal may be opened to discharge the steam to the outside.

In addition, the safety steam discharge device 64 is configured to include a spring having a spring force greater than the spring included in the automatic steam discharge device so that the steam pressure inside the inner pot is greater than the threshold pressure greater than the set pressure Open by the elastic force of the spring can be discharged into the space between the inner cover cover 56 and the inner cover (58).

At this time, the automatic steam discharge device 62 and the safety vapor discharge device 64 is installed to be located above the plate-shaped body portion 61, the body portion 61 is installed to be fixed to the inner lid outer side. .

On the other hand, the steam discharge passage 66 is installed to communicate with the automatic steam discharge device 62, the horizontal steam discharge passage (66a) is formed to be horizontally embedded in the body portion 61, and the horizontal steam discharge passage Is installed to communicate with (66a) is made of a vertical steam discharge passage 66b vertically formed to penetrate the outer lid 54 and the inner lid cover 56, the horizontal steam discharge passage 66b is the automatic It is configured to be blocked by a separate AL rivet 66 'at the opposite end to the steam discharge device 62, the vertical steam discharge passage 66b is installed so that the lower end is in communication with the steam discharge hole (67).

In particular, the vapor discharge hole 67 is installed so that the safety sealing packing 68 is fitted from the lower side to the upper direction, the vapor discharge hole 67 so that the fixing projection (67a) in a ring shape on the inner peripheral surface protrudes. The safety sealing packing 68 is formed of a rubber material so that the fixing groove 68a is recessed in a ring shape on an outer circumferential surface thereof so as to be caught by the fixing protrusion 67a, and the safety sealing packing 68 is formed. Silver is removed from the steam discharge hole 67 when an external force is applied.

In addition, the outer lid 54 is formed so that the portion communicating with the upper end of the vertical steam discharge flow path (66b) in addition to cover the top of the vertical steam discharge flow path (66) to open and close at the same time. A steam discharge cap 72 is further installed, and one end 72a of the steam discharge cap 72 is hinged, and the other end 72b is caught by a hook 54h integrally formed with the outer lid 54. It is installed so that it can be opened and closed.

Of course, the steam discharge cap 72 is formed through the opening (72h) so that the steam discharged from the steam discharge passage 66 can be discharged to the outside even without opening the steam discharge cap (72).

However, when the steam discharge passage 66 is blocked in the state in which the steam discharge cap 72 is opened, or when the automatic steam discharge device 62 or the safety vapor discharge device 64 malfunctions or fails, the safety External force is applied so that the sealing packing 68 is removed from the vapor discharge hole 67.

At this time, the external force acts to push the safety packing member 68 into the inner pot through the vertical steam discharge passage 66b so that the safety sealing packing 68 is removed from the steam discharge hole 67. In this case, the safety pins 74 are used to access the safety sealing packing 68 through the vertical steam discharge passage 66b.

Therefore, the safety sealing packing 68 maintains a state of blocking the vapor discharge hole 67 in normal times, but the vapor discharge passage 66 is blocked, or the automatic vapor discharge device 62 and the safety vapor discharge device. When the 64 malfunctions or breaks down, the safety sealing packing 68 is removed from the steam exhaust hole 67 by the safety pin 74, and the vertical steam exhaust passage 66b is opened to steam out. To be discharged.

Looking at the operation of the present invention configured as described above are as follows.

The inner pot is heated as the electric heater is operated as shown in FIG. 6A while the inner lid 58 is installed to be closed to the main body so that the inner lid 58 covers and seals the upper surface of the inner pot. Steam is generated as the rice or food and water is heated, which causes cooking and cooking while increasing the pressure inside the inner pot.

At this time, when the steam pressure inside the inner pot reaches a set pressure, the automatic steam discharge device 62 is operated to open so that the steam inside the inner pot is discharged to the outside along the steam discharge passage 66. The steam pressure inside the inner pot can be kept constant, during which the rice is steamed or food is finished cooking.

Subsequently, the automatic steam discharge device 62 is opened by a spring elastic force included in the solenoid valve while the power input to the solenoid valve is cut off and the steam inside the inner pot is lower than the set pressure, thereby discharging the steam inside the inner pot. Discharge to the outside through the discharge passage (66).

On the other hand, the safety vapor discharge device 62 is maintained in the normally closed state by the elastic force of the spring, when the pressure inside the inner pot reaches a critical pressure higher than the set pressure is opened to resist the spring elastic force by the pressure The steam inside the inner pot is discharged into the space between the inner lid cover 56 and the inner lid 58.

Of course, the safety sealing packing 68 is installed to block the steam discharge hole (67) during the above process, the steam guided along the steam discharge passage 68 is the steam discharge cap ( It is discharged to the outside through the through hole 72h formed in the 72.

At this time, when the steam discharge passage 66 is blocked, or when the automatic steam discharge device 62 and / or the safety steam discharge device 64 malfunctions or malfunctions, as shown in Figure 6b the steam discharge cap ( The user opens the vertical steam discharge passage 66b using the safety pin while the 72 is opened to open the steam discharge passage 66, and simultaneously pushes the safety sealing packing 68 toward the inner pot. To remove from the vapor discharge hole (67).

Therefore, since the steam inside the inner pot is discharged directly to the outside through the steam discharge hole 67 and the steam discharge passage 66, a user may unduly open the outer lid 54 to cause a safety accident. You can prevent it in advance.

The internal pressure control device of the electric pressure cooker according to the present invention constituted as described above is excellent in noise reduction performance and provides an electric pressure cooker to which the built-in pressure adjusting device is applied with high consumer preference in terms of design. Since the emergency steam discharge means is provided, when excessive steam pressure is applied to the inner pot, the steam can be simply and safely discharged, and then the outer lid can be opened, thereby increasing the safety and product reliability of the user. .

Claims (6)

The inner pot is built in the main body to cook, the outer lid installed to open and close to the main body, the inner lid cover is installed to be fixed to the inside of the outer lid, the inner lid cover detachably installed so as to be spaced apart when cooking Covering the inner pot to form a pressure space inside the inner pot is sealed when the inner lid and the inner cover is installed on the inner lid when the steam pressure is higher than the set pressure by the elastic force to discharge the steam to the outside to the inner pot An automatic steam discharge device which maintains the inside at a constant pressure or is opened in accordance with an electrical signal to discharge steam to the outside, and a steam discharge passage installed through the inner lid cover and the outer lid so as to communicate with the automatic steam discharge device. And a vapor discharge hole formed in the inner cover to communicate with the steam discharge passage, and the steam discharge hole. Is provided to give makes case that an external force is applied to the internal pressure of the electric pressure cooker which is characterized by being a safety sealing packing, which is installed so as to open said vapor outlet hole control device. The method of claim 1, The external force acts to push the safety packing member into the inner pot through the steam discharge passage to allow the safety sealing packing to be removed from the steam discharge hole. The method of claim 2, And the external force is applied to the safety sealing packing using a safety pin accessible to the safety packing member through the steam discharge passage from the outside. The method of claim 1, The steam discharge hole is formed with a fixing projection to protrude in a ring shape on the inner circumferential surface, the safety sealing packing is an electric pressure cooker characterized in that the fixing groove recessed in a ring shape is formed on the outer circumferential surface to be locked to the fixing projection. Internal pressure control device. The method according to any one of claims 1 to 4, Is installed on the inner lid is released when the steam pressure in the inner pot by the elastic force greater than the threshold pressure greater than the set pressure of the automatic steam discharging device to discharge the steam to the space between the inner lid cover and the inner lid safety steam discharge Internal pressure control device of an electric pressure cooker, characterized in that the device further comprises. The method of claim 5, The internal pressure control device of the electric pressure cooker, characterized in that it further comprises a steam discharge cap installed to open and close the steam discharge passage on the outer outer lid of the steam discharge passage.