KR19990019462U - Steam pressure controller of electric pressure cooker - Google Patents

Abstract

The present invention not only makes the adsorption action of the solenoid plunger more smooth, but also allows the steam in the inner container to be discharged away from the solenoid, and at the same time, it shields the inside of the solenoid from the steam flow path to prevent damage to the solenoid. A steam pressure control device comprising: a bushing installed on an inner lid to form a steam passage communicating with an inner container in a longitudinal direction; A vapor discharge pipe selectively communicating with the steam passage and communicating with the outside of the lid in a longitudinal direction; A housing installed in a transverse direction to communicate with a discharge passage on one side of the bushing, a winding coil fixed inside the housing, a plunger installed in a transverse direction from the center of the winding coil, and fixed to one end of the winding coil A solenoid comprising a stator for pulling the plunger in a transverse direction when a power is applied to the winding coil, and a spring installed between the plunger and the stator to press the plunger in a direction opposite to the stator; The central portion is fixed to one side of the plunger and the outer end is fixed to the housing, characterized in that it comprises a bellows to open and close the steam passage in accordance with the transverse movement of the plunger while shielding the steam passage and the inside of the solenoid.

Description

Steam pressure controller of electric pressure cooker

The present invention relates to a steam pressure control device of an electric pressure cooker, and more particularly, by making the plunger adsorption moving direction of the solenoid horizontal, reducing the load according to the weight of the plunger to facilitate the adsorption of the plunger and at the same time, Electric pressure cooker that allows the steam of the inner container to be discharged to the outside along a separate discharge pipe without passing through the solenoid and to always prevent the damage of the solenoid due to the inflow, contact and steam heat by shielding the inside of the solenoid from the steam flow path. It relates to a vapor pressure control device of.

In general, the electric pressure cooker is provided with a safety valve to allow the internal or forced discharge of the internal steam pressure when the steam pressure of the heated inner container reaches a predetermined value, that is, cooking is completed and converted to warmth As a result, various risks caused by vapor pressure could be prevented or reduced.

Recently, the electric pressure cooker is provided with a steam pressure control device for controlling the steam pressure suitable for the cooking conditions of the contents according to the functionality of the cooking.

Most of the steam pressure control device of the electric pressure cooker is installed on the lid or cover in communication with the inner container, and is composed of a solenoid valve in which a solenoid and a valve are combined. When the pressure of the inner container reaches a predetermined steam pressure, the power is turned on. It is applied to the solenoid to open and close the valve of the communication part communicating with the inner container to discharge the vapor pressure to the outside.

However, since the steam pressure control device of the electric pressure cooker is discharged to the outside through the solenoid through the valve, foreign matters such as food waste are accumulated along the steam in the process of being discharged along the steam during long-term use. Corrosion caused poor steam pressure control.

On the other hand, the steam pressure control apparatus of the prior art electric pressure cooker to solve the above poor steam pressure control operation is presented in the Republic of Korea Utility Model No. 97-20727, briefly as shown in Figure 1 as follows .

As shown in the prior art, a housing cap 10 having a male screw portion 10 'to be screwed to the inner lid 5 and having a steam passage 11 longitudinally in the center thereof, and A housing 12 integrally coupled to an upper end of the housing cap 10, an insert bobbin 13a installed in a fixed state inside the housing 12, and a frame 13b installed in the insert bobbin 13a. And a solenoid 13 composed of a winding coil 13c, a plunger 13d mounted at the center of the winding coil 13c, an operation pin 13e, and a stator 13f, and to communicate with the steam passage 11. A plurality of vapor pressure discharge passages 14 which are formed to penetrate the insert bobbin 13a longitudinally and are installed on the bottom surface of the stator 13f and are closely connected to the packing ring 16 to block foreign substances from entering the solenoid 13 side. Sealing washer 15 and for the upper end of the housing 12 to be located directly above the solenoid 13 It is fixedly installed and is integrally coupled to the nozzle 17 for discharging the vapor pressure to the outside, the end of the operation pin 13e and the packing member for selectively opening and closing the steam passage 11 of the housing cap 10 (18), and is installed between the packing member 18 and the housing cap (18), and the coupling spring (18) for imparting a home position return force to the actuating pin (13e), respectively have.

The steam pressure control device of the electric pressure cooker is applied to the tubular coil (13c) of the solenoid 13 in the cooking process of the food, attaching the plunger (13d) to the stator (13f), fixed to the operating pin (13e) The packing member 18 maintains a state in which the steam passage 11 communicating with the inner container is closed.

In this process, when a setting signal is input from a separate timer or a temperature sensor provided in the electric pressure cooker, the power applied to the winding coil 13c of the solenoid 13 is cut off, and the plunger 13d is moved to the stator 13f. Shut off the pulled electromagnetic force. At this time, the operation pin 13e and the packing member 18 integrated with the plunger 13d open the steam passage 11 while moving upward by the spring spring 19, and the washer for sealing to the packing ring 16. As the 15 moves and contacts the solenoid 13, the inside of the solenoid 13 is closed, and the vapor pressure in the inner container passes through the open steam passage 11 to form a plurality of vapor pressure discharge passages 14 and nozzles formed in the insert bobbin 13a. It is discharged to the outside along (17).

Accordingly, since the vapor pressure of the inner container does not pass while contacting the inside of the solenoid 13, it is possible to prevent the inflow and accumulation of foreign substances generated from food in the inner container, thereby preventing the failure of the solenoid 13 accordingly. do.

However, the steam pressure control apparatus of the steam pressure cooker according to the prior art is to close the inside of the solenoid 13 by the sealing washer 15 in contact with the packing ring 16, the steam pressure discharge path 14 after steam discharge ) And condensed water remaining in the surroundings may be introduced into the solenoid 13 while the sealing washer 15 and the packing ring 16 are separated, and the water introduced into the solenoid 13 is thus obtained. The material not only contaminates the inside of the solenoid 13, but also has a problem of corroding the main members, and the elastic spring 19, which presses the packing member 18 upwards, comes into direct contact with the vapor pressure, thereby easily corroding. There is a problem. .

In addition, the steam pressure discharged from the inner container has a considerably high heat, and as the steam pressure is discharged to the vapor pressure discharge path 14 as described above, the heat of the steam pressure heats the insert bobbin 13a to allow the solenoid 13 to be heated. The solenoid 13 heated in this way has a problem that the member such as the winding coil 13c may be damaged as it is deteriorated.

In particular, the steam pressure controller of all existing steam pressure cookers moves the solenoid's plunger in the longitudinal direction, that is, in the vertical direction. At this time, when the stator sucks the plunger through the electromagnetic force, the elastic force of the spring is applied to the elastic force of the plunger. It is imposed and put a lot of load. Accordingly, there is a problem that the steam discharge operation may be poor because the adsorption movement of the plunger is not smooth due to the weighted load.

Therefore, the present invention has been devised in view of the above problems, so that the adsorption action of the solenoid plunger is more smooth, as well as the vapor in the inner container is discharged from the solenoid at the same time and always shields the inside of the solenoid from the steam flow path. The purpose of the present invention is to provide a steam pressure control device for an electric pressure cooker that prevents the inflow and contact of steam as well as the damage of the solenoid due to steam heat.

1 is an internal cross-sectional view showing a steam pressure control device of an existing electric pressure cooker,

2 and 3 as showing the configuration and operation of the steam pressure control device of the electric pressure cooker according to an embodiment of the present invention,

Figure 2 is a state diagram showing before the operation of the steam pressure control device,

3 is a view showing the state after the steam pressure control device is operated.

Explanation of symbols on the main parts of the drawings

10 bushing 10a steam passage

20: solenoid 21: housing

22: winding coil 23: plunger

24: stator 25: spring

30: bellows 40: steam discharge pipe

Steam pressure control apparatus for an electric pressure cooker according to an embodiment of the present invention for achieving the above object, the bushing is formed on the inner lid to form a steam passage communicating with the inner container in the longitudinal direction; A vapor discharge pipe selectively communicating with the steam passage and communicating with the outside of the lid in a longitudinal direction; A housing installed in a transverse direction to communicate with a discharge passage on one side of the bushing, a winding coil fixed inside the housing, a plunger installed in a transverse direction from the center of the winding coil, and fixed to one end of the winding coil A solenoid comprising a stator for pulling the plunger in a transverse direction when a power is applied to the winding coil, and a spring installed between the plunger and the stator to press the plunger in a direction opposite to the stator; The central part is fixed to one side of the plunger and the outer end is fixed to the housing, and the bellows to open and close the steam passage in accordance with the transverse movement of the plunger while shielding the steam passage and the inside of the solenoid is a basic feature in the technical configuration .

Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings.

Steam pressure control device of the electric pressure cooker according to an embodiment of the present invention, as shown in Figure 2 and 3, the steam passage communicating with the inner container to the inner lid 106 covering the inner container of the electric pressure cooker ( The bushing 110 forming the 110a is fitted, and the lower end is screwed into the cap nut 115 having the plurality of discharge holes 115a, and is external to the lid 105 positioned as the upper outer portion of the inner lid 106. While communicating in the longitudinal direction and the vapor discharge pipe 140 that is selectively communicated with the discharge passage of the bushing 110 is installed, one side of the bushing 110 is provided with a solenoid 120 in the transverse direction.

Here, the solenoid 120 is located in the transverse direction to the inner lid 106 and the lid 105, the housing is installed in the transverse direction in communication with the discharge passage on one side of the bushing 110, and the housing A winding coil 122 fixed inside, a plunger 123 installed to be movable in a transverse direction from the center of the winding coil 122, and a winding coil 122 fixed to one end of the winding coil 122. When the power is applied to the stator 124 to pull the plunger 123 in the transverse direction and the insert bobbin to form a moving path of the plunger 123 on the inside and to wrap the winding coil 122 to secure to the housing 126.

On the other hand, the bellows 130 for opening and closing the steam passage (110a) in accordance with the vertical movement of the plunger 123 in the lower portion of the plunger 123 is firmly attached by the T-type uneven coupling, the plunger 123 and the stator Between the 124, the spring 125 for pressing the plunger 123 to the lower side opposite the stator 124 to close the steam passage (110a) to the bellows 130 is elastically installed.

In addition, the bellows 130 is inserted between the insert bobbin 126 and the bushing 110, the outer end of which is the inner side of the housing to shield the interior of the steam passage 110a and the solenoid 120. That is, the bellows 130 is made of a flexible silicone rubber is stretched and stretched to form a closed space in the interior of the solenoid 120 is always stretched like the plunger 123.

Reference numeral 117 in the figure is a packing ring to maintain the airtightness between the inner lid 106 and the bushing (110).

Referring to the operation of the subject innovation is configured as follows.

First, the control means provided separately to the electric pressure cooker in the cooking process of the power cut off the power supply to the tubular coil 122 of the solenoid 120 to cause the elastic compression force of the spring 125 to be attached to the lower portion of the plunger 123 130 to close the steam passage (110a) of the bushing (110) in communication with the inner container. Accordingly, the inside of the inner container when the food is cooked to maintain a closed state.

In this process, when a setting signal, that is, a signal according to a time or temperature set by a user is input from a separate timer or temperature sensor provided in the electric pressure cooker, the control means supplies power to the winding coil 122 of the solenoid 120. Is applied. As the power is applied to the winding coil 122, the stator 124 self-adsorbs the plunger 123 through electromagnetic force and pulls the bellows 130 interlocked with the plunger 123 in the left direction in the drawing to the inner container. Open the vapor passage (110a) of the bushing (110) communicated. At this time, the steam of the inner container is discharged to the outside through the discharge hole 115a of the cap nut 115, the steam passage 110a and the steam discharge pipe 140, the steam discharge path of the stator 124 while maintaining the internal pressure Lowers.

In this process, the discharged steam is discharged to the outside without contacting the solenoid 120 by the bellows 130 and the steam discharge pipe 140 at a position spaced apart from the solenoid 120, thereby inducing the inflow of steam and steam heat. Damage to the solenoid 120 may be prevented.

In addition, the bellows 130 is able to completely suppress the inflow of the solenoid 120 of the steam by shielding the inside of the solenoid 120 and the steam flow path, such as the steam passage (110a) even during the completion of the steam discharge.

In particular, the present invention is a combination of the solenoid 120 in the transverse direction and the vapor discharge passage in the longitudinal direction in a direction perpendicular to each other, although the plunger 123 is adsorbed and moved to the plunger 123 in the transverse direction in which friction is applied. Since gravity does not act, the load of the plunger 123 is less than that of the conventional one which has moved the plunger 123 to the upper portion where the self-weight of the plunger 123 acts while compressing the spring 125. So that the adsorption movement of

As described above, the present invention facilitates the adsorption movement of the plunger so that the steam discharge operation through the opening and closing is made more precise, and the steam of the inner container is discharged to the outside along a separate discharge pipe without passing through the solenoid. By shielding the inside of the solenoid from the steam flow path, it is possible to prevent frequent failure and damage of the solenoid by steam.

Although the present invention has been shown and described with respect to particular embodiments, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the accompanying Utility Model Claims. Anyone who owns it can easily find out.

Claims (2)

A bushing 110 installed at the inner lid 106 to form a vapor passage 110a communicating with the inner container in a longitudinal direction; A vapor discharge pipe 140 selectively communicating with the steam passage 110a to communicate with the outside of the lid 105 in a longitudinal direction; A housing installed in the transverse direction to communicate with the discharge passage on one side of the bushing 110, a winding coil 122 fixed to the inside of the housing, a plunger installed in the transverse direction in the center of the winding coil 122 123, a stator 124 that is fixed to one end of the winding coil 122 and pulls the plunger 123 laterally when power is applied to the winding coil 122, the plunger 123 and the stator ( A solenoid 120 installed between the 124 and a spring 125 for pressing the plunger 123 against the stator 124; A central portion is fixed to one side of the plunger 123 and an outer end thereof is fixed to the housing to shield the steam passage 110a and the solenoid 120 from the inside, while the plunger 123 moves in the lateral direction. Steam pressure control device for an electric pressure cooker comprising a bellows 130 for opening and closing the. The apparatus of claim 1, wherein the bellows 130 is made of silicone rubber and is unevenly coupled to the plunger 123 in a T-shape.