KR20130055357A - Electric cooker - Google Patents

Abstract

In order to improve the function and quality of the product, the present invention is formed of a stainless steel material is coupled to the lower surface of the lid, the locking ring coupling portion formed on the edge of the top heater stainless plate; Pressure response operation means formed in the top heater stainless plate to be selectively operated according to the pressure in the inner pot is connected so that the end is in communication with the steam discharge hole with a sealing ring in the rim; An inner pot cover detachably coupled to a lower portion of the top heater stainless plate and having a through hole formed therein, the inner pot packing coupling part integrally bent to seal the upper portion of the inner pot at an edge thereof; And fixed to the top heater stainless plate provides an electric cooker comprising a plurality of supports for mediating the pressure response operating means and the lower lid.

Description

Electric cooker

The present invention relates to an electric cooker, and more particularly, to an electric cooker that significantly improves the corrosion resistance and productivity by improving the structure of the top heater plate.

In general, an electric cooker is a device used to cook food contained in an inner pot, and seals an upper surface of the inner pot to maintain foods at high temperature and high pressure.

1 is a cross-sectional view showing a conventional electric cooker, Figure 2 is a perspective view showing a top heater plate coupled to the pressure control means of the conventional electric cooker, Figure 3 is a top heater combined with the pressure control means of the conventional electric cooker It is sectional drawing which shows plate.

As shown in FIGS. 1 to 3, the conventional electric cooker 1 heats the inner pot 9, which is selectively accommodated inside the main body, by direct heat transfer or induction heating using a hot plate, thereby heating the inside thereof to a state of high temperature and high pressure. Keep and cook food in a short time. At this time, the upper portion of the main body in which the inner pot 9 is accommodated is covered by a top heater plate 3 made of a metal material provided at the lower portion of the lid 7. When the lid 7 is closed, the inner pot 9 is sealed. As a result, the heat is prevented from being released to the outside, so that high temperature and high pressure are maintained, so that cooking can be performed efficiently and the temperature can be kept constant even when warming.

In detail, the outer ring of the top heater plate (3) is provided with a locking ring (5) for performing a locking function by rotationally engaging with the flange formed on the upper end of the inner pot (9), the locking ring (5) In this locked state, the packing provided on the outer circumference of the top heater plate 3 is combined with the upper end of the inner pot 9 to seal the inside of the inner pot 9. The upper surface of the top heater plate 3 includes pressure adjusting means such as a pressure weight valve 11 and a solenoid valve 13, a non-return type steam discharge part 15, a lid opening prevention part 17, and the like. The safety device is connected directly.

On the other hand, the conventional top heater plate 3 was used to produce an aluminum material by a die casting method and coating the surface.

However, since the aluminum top heater plate 3 is easily corroded when exposed to steam at high temperature and high pressure, it requires surface treatment such as anodizing to enhance corrosion resistance on the surface thereof. If it comes off, the part oxidizes rapidly. Due to this, a supplementary means such as attaching a separate stainless steel oven cover to the bottom surface of the top heater plate 3 is provided, but damage due to scratches or the like of the surface treatment film generated during the detachment and detachment of the oven cover 3 is provided. Was difficult to prevent.

In addition, the top heater plate 3 is formed with a through hole 19 in communication with the pressure adjusting means and the safety device for adjusting the pressure in the inner pot (9), the inner circumferential surface of the through hole is difficult to surface treatment Therefore, corrosion of the inner circumferential surface of the through hole occurred easily in the process of ejecting the high temperature and high pressure steam. In addition, when the occurrence of corrosion increases, there is a concern that the through hole may be blocked to cause a serious safety problem that causes the pressure regulating means to malfunction.

In order to solve the above problems, the present invention is to provide an electric cooker having a stable coupling structure in the top heater plate made of stainless steel to prevent corrosion.

In order to solve the above problems, the present invention is formed of a stainless steel material is coupled to the lower surface of the lid, the locking ring coupling portion is formed in the top heater stainless plate bent integrally; Pressure response operation means formed in the top heater stainless plate to be selectively operated according to the pressure in the inner pot is connected so that the end is in communication with the steam discharge hole with a sealing ring in the rim; An inner pot cover detachably coupled to a lower portion of the top heater stainless plate, having a through hole formed therein, and an inner pot packing coupling part configured to seal an inner pot upper portion at an edge thereof; And fixed to the top heater stainless plate provides an electric cooker comprising a plurality of supports for mediating the pressure response operating means and the lower lid.

The above-mentioned solution of the present invention provides the following effects.

First, since the top heater stainless plate is manufactured using stainless steel having excellent corrosion resistance, it is possible to provide an effective corrosion prevention and cleanliness effect of the top heater stainless plate even when contacting the steam of high temperature and high pressure.

Second, the support is spot welded and fixed on the top surface of the top heater stainless plate, and the lower part of the top lower cover of the pressure-responsive operation means and the lid may be fixed to the support, thereby providing a simple and efficient fixing and supporting structure.

Third, the support surface of the support has a predetermined cross-sectional area to facilitate spot welding, and the fastening of the coupling target device is completed by simply coupling the coupling target device to the coupling portion extended to the upper side of the support surface to fasten the coupling member. And productivity can be improved.

Fourth, since the inner pot cover of the material having excellent corrosion resistance is detachably coupled to the lower portion of the top heater stainless plate to seal the inner pot upper part, after performing the cooking process using an electric cooker, the user removes and washes only the inner pot cover again. Since it can be combined with the lower part of the top heater stainless plate, it is possible to easily maintain the cleanness of the lower surface of the lid, and the space between the top heater stainless plate and the inner pot cover is sealed by the auxiliary packing so that it can function as a heat insulation layer to increase the warming effect. .

1 is a cross-sectional view showing a conventional electric cooker.
Figure 2 is a perspective view showing a top heater plate coupled to the pressure control means of the conventional electric cooker.
Figure 3 is a cross-sectional view showing a top heater plate coupled to the pressure adjusting means of the conventional electric cooker.
Figure 4 is a top view showing the peripheral configuration of the top heater stainless plate of the electric cooker according to an embodiment of the present invention.
FIG. 5 is a side cross-sectional projection view taken from the AA ′ direction of FIG. 4. FIG.
Figure 6 is a cross-sectional view showing a coupling structure of the support applied to an embodiment of the present invention.
Figure 7 is a top perspective view showing the peripheral configuration of the top heater stainless plate of the electric cooker according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail an electric cooker according to a preferred embodiment of the present invention.

Figure 4 is a top view showing the peripheral configuration of the top heater stainless plate of the electric cooker according to an embodiment of the present invention, Figure 5 is a side cross-sectional projection view from the AA 'direction of Figure 4, Figure 6 is one of the present invention It is sectional drawing which shows the coupling structure of the support applied to an Example.

4 to 6, the electric cooker according to the present invention includes a top heater stainless plate 100, pressure response operation means, inner pot cover 130, and the control bracket 110.

Here, the top heater stainless plate 100 is formed of a stainless steel material is coupled to the lower surface of the lid, the inner pot cover 130 that covers the entire upper surface of the inner pot (9) is detachably coupled to the lower portion. The top heater stainless plate 100 is integrally bent with the locking ring coupling portion to which the locking ring 55 is coupled to the rim thereof. To this end, the top heater stainless plate 100 is preferably formed by pressing.

In addition, the top heater stainless plate 100 is formed at a set position of a plurality of steam discharge holes (109 of FIG. 5) that are in communication with each of the flow path of the respective devices of the pressure-responsive operation means. At this time, the pressure response operation means is connected to the end of the pressure response operation means in communication with the steam outlet hole 109 so as to be selectively operated according to the pressure inside the inner pot, so that the steam inside the inner pot does not leak A sealing ring (107 in FIG. 5) is interposed at the edge of the steam discharge hole.

In detail, the pressure response operation means is a variety of devices that are selectively operated according to the pressure inside the inner pot, pressure regulating means including a pressure valve valve 121 and a solenoid valve 123, and a non-return type steam discharge unit 125 And a safety device including a lid opening preventing unit 127 is preferable. Here, when the non-return type steam discharge unit 125 has an abnormal high pressure generated in the inner pot, the plunger is raised in a non-return type and discharges the steam, and the lid opening preventing unit 127 has the inner pressure higher than the set pressure. When the pin is raised to restrain the rotation of the locking ring refers to the device that does not open the lid.

On the other hand, the upper surface portion of the top heater stainless plate 100 is coupled to the control bracket 110 is formed with a mounting portion that is fixed and supported by the respective devices of the pressure response operation means. In this case, the control bracket 110 may be provided to collect and fix the plurality of pressure response operating means to mediate the coupling of the devices of the pressure response operation means to the top heater stainless plate 100, but is not limited thereto. The control bracket may be divided into a plurality of parts corresponding to the pressure response operating means.

At this time, a plurality of supports 101 are fixed by spot welding on the upper surface of the top heater stainless plate 100, and the support 101 is operated in response to the pressure of the top heater stainless plate 100. Mediate the engagement between the means and the lower lid.

In detail, as shown in FIG. 6, the support 101 includes a support surface portion 101a and a fastening portion 101b. Here, the support surface portion 101a has a bottom surface which is in surface contact with the top surface of the top heater stainless plate 100, and the fastening portion 101b extends upwardly from the support surface portion 101a so as to have other parts therein. The fastening groove 101c to which the fastening member 140 such as a screw for coupling is preferably formed.

At this time, the cross-sectional area of the support surface 101a is preferably formed to be wider than the cross-sectional area of the fastening portion 101b in order to secure an area for spot welding. In addition, a space is preferably formed between a coupling target device such as a control plate or a pressure-responsive actuating means coupled to the support 101 and an upper surface of the top heater stainless plate 100, wherein the top heater stainless plate ( A top heater made of a heating wire or various heaters for heating the upper surface of the 100 may be mounted.

For example, Figure 6 shows a structure in which the control bracket 110 is coupled to the coupling target device. As shown, the fastening portion 101b is coupled to the coupling hole 113 formed in the control bracket 110, the upper edge of the fastening portion 101b is seated on the stepped inside the coupling hole 113 do. At this time, when the fastening member 140 such as a screw is fastened to the fastening groove 101c, the control bracket 110 is clamped between the head of the fastening member 140 and the upper end of the fastening portion 101b. Can be fixed.

In addition, the basic configuration of the support 101 provided to mediate the coupling with the lower lid is also the same as described above. However, it is preferable that the fastening part of the support 101 fixedly disposed on the outer side of the top heater stainless plate 100 extends upward to be coupled to the lower part of the lid. In addition, the extended end is formed with a fastening groove (101c of FIG. 4) is fastened to the fastening member to be fixed to the lower portion of the top lower cover disposed below the lid, the outer circumference is a spring (102 of FIG. 5) is interposed This is preferred.

Meanwhile, referring to FIG. 5, the inner pot cover 130 is made of a material having excellent corrosion resistance, and is detachably coupled to a lower portion of the top heater stainless plate 100, and the inner pot 9 is inside the pressure. The through hole 130a is formed in communication with the corresponding operating means. In addition, the inner pot packing coupling portion 131 to which the inner pot packing 135 for sealing the upper portion of the inner pot 9 is integrally formed at the edge of the inner pot cover 130. In this case, the inner pot cover 130 may be detachably coupled in various ways such as a detachable fitting or hook coupling to a lower to outer side of the top heater stainless plate 100.

Therefore, after the completion of the cooking process using the electric cooker, the user only needs to remove and wash the inner pot cover 130 and then combine again to the bottom of the top heater stainless plate 100, it is possible to easily maintain the cleanness of the lower surface of the lid .

At this time, the bottom of the top heater stainless plate 100 is provided with an auxiliary packing 106 for sealing the space between the inner pot cover 130. Preferably, the auxiliary packing coupling portion to which the auxiliary packing 106 is coupled to the outer edge of the top heater stainless plate 100 may be integrally bent. Here, the auxiliary packing coupling portion is formed so as to surround only a predetermined region containing the steam discharge hole 109 in the lower portion of the top heater stainless plate 100 to be formed in a groove-shaped structure in which the auxiliary packing 106 is inserted. It may be.

Through this, the steam passing through the through hole 130a may be guided to the steam discharge hole 109 of the top heater stainless plate 100 without being leaked to the outside, and the top heater stainless plate 100 and the The space between the inner pot cover 130 may function as a heat insulation layer to increase the warming effect.

On the other hand, the mounting portion of the control bracket 110 may be formed with a plurality of mounting holes 111 so that the outer surface of the end side of the respective devices of the pressure-responsive operation means is combined and fixed in a set position. In this case, each of the mounting holes 111 is formed at a position corresponding to the vapor discharge hole 109 formed in the top heater stainless plate 100, the respective devices of the pressure-responsive operation means in the mounting hole 111 Once installed, the flow path of the device may be automatically communicated with the vapor discharge hole 109.

Referring to the enlarged view of FIG. 5, the flow passage 121a formed inside the pressure weight valve 121 shown as an example among various devices of the pressure response operation means includes a steam discharge hole 109 of the top heater stainless plate 100. It is coupled to communicate with), the ends of the various devices are closed by pressing the sealing ring 107 of the ring-shaped fastening wrapped around the edge of the steam outlet hole (109). Of course, a separate O-ring that is pressurized between the control bracket 110 and the top heater stainless plate 100 to form a seal may be coupled to the outside of the sealing ring 107 to form a double sealing structure.

Here, the sealing ring 107 is formed in a ring shape, the insertion groove 107c is formed is inserted into the rim of the steam discharge hole 109, the clamping portion 107a above and below the insertion groove 107c. And it is preferable that the lower protective portion (107b) is formed.

In detail, the edge of the vapor discharge hole 109 formed in the top heater stainless plate 100 is inserted into the insertion groove 107c. Then, the upper surface of the clamping portion 107a formed on the upper side of the insertion groove 107c is pressed by the lower end of the pressure response operation means to form a seal. That is, the sealing ring 107 is pressurized between the upper surface of the edge of the steam discharge hole 109 and the end of the pressure response operation means to form a seal.

Here, in the case of the safety device of the pressure response operating device, the sealing ring may be formed integrally with the diaphragm. Through this, since high-temperature, high-pressure steam from the inner pot may be sealed so as not to leak into the upper space of the top heater stainless plate 100, corrosion of various devices such as the control bracket 110 disposed in the upper space may be prevented. You can prevent it. Of course, in some cases, the sealing ring 107 may include only the portion corresponding to the clamping portion 107a by omitting the insertion groove 107c and the lower protection portion 107b.

As such, according to the present invention, the entire surface of the upper portion of the inner pot in which the high temperature and high pressure steam is covered by the inner pot cover 130 and the top heater stainless plate 100 made of a material having excellent corrosion resistance is doubled, and the inner pot Flow paths of the various devices of the pressure-responsive operation means for adjusting the pressure inside are directly connected to and communicated with the edge of the vapor discharge hole 109 of the top heater stainless plate 100.

On the other hand, Figure 7 is a top perspective view showing the peripheral configuration of the top heater stainless plate of the electric cooker according to another embodiment of the present invention.

As shown in Figure 7, the outer periphery of the pressure response operation means may be provided with a split bracket 129, which is coupled to the support fixed and supported, respectively. That is, the outer circumferences of the various devices 121, 123, 125, and 127 of the pressure response actuating means are provided with split brackets 129 that are coupled to the support 101 and fixed and supported, respectively, without intervening the aforementioned integrated control brackets. Is separately divided and connected to the support 101 may be fixed by the fastening of the fastening member 140.

At this time, the flow paths of the various devices of the pressure-responsive actuating means in which the split bracket 129 is coupled to the support 101 are fixed to the steam discharge holes (109 of FIG. 5) formed in the top heater stainless plate 100. In order to communicate correctly, the fixing position of the support 101 is manufactured to correspond exactly to the set position and dimensions of the split bracket 129. Here, the configuration of the sealing ring disposed between the edge of the steam discharge hole and the end of the various devices of the pressure response operation means is as described with reference to FIG.

Of course, the outer circumference of the solenoid valve and the safety device of the respective devices of the pressure response operation means is provided with a bracket itself may be directly coupled to the support. That is, in general, each device of the pressure-responsive operation means is provided with a bracket having a fastening hole, such a bracket may also function as a split bracket that is fixed directly to the support with a fastening screw or the like.

As such, the top heater stainless plate 100 is manufactured of a stainless material having excellent corrosion resistance, so that various devices of the pressure-responsive operation means are supported by the support 101 fixed to the upper surface of the top heater stainless plate 100. It can be stably fixed and supported. Through this, corrosion is prevented, and the cleanliness of the upper portion of the inner pot 9 is maintained to significantly improve the functionality and stability of the product.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

1: cooker 7: lid
9: inner pot 100: top heater stainless steel plate
101: support 107: sealing ring
107a: clamping portion 107b: lower protective portion
107c: insertion groove 109: steam discharge hole
110: control bracket 121: pressure valve
123: solenoid valve 125: non-return steam outlet
127: lid open prevention portion 130: inner pot cover
106: secondary packing

Claims (6)

A top heater stainless plate formed of a stainless steel material and coupled to a lower surface of the lid, the locking ring coupling part integrally bent at an edge thereof;
Pressure response operation means formed in the top heater stainless plate to be selectively operated according to the pressure in the inner pot is connected so that the end is in communication with the steam discharge hole with a sealing ring in the rim;
An inner pot cover detachably coupled to a lower portion of the top heater stainless plate, having a through hole formed therein, and an inner pot packing coupling part configured to seal an inner pot upper portion at an edge thereof; And
And a plurality of supports fixed to the top heater stainless plate to mediate coupling between the pressure-responsive actuation means and the lid bottom. The method of claim 1,
The support is an electric cooker, characterized in that the spot welding is fixed to the top heater stainless plate. The method of claim 1,
The support includes a support surface portion having a bottom surface that is in surface contact with the top heater stainless plate, and a fastening portion having a fastening groove extending from an upper portion of the support surface portion to fasten a fastening member for engagement with a coupling target device therein. Electric cooker, characterized in that made by. The method of claim 3, wherein
A coupling hole having an edge formed with the end of the fastening part is formed to be coupled to the support by fastening the fastening member, and various mounting parts integrally formed with the end side outer surface of the pressure-responsive operation means are fixed and supported are integrally formed. An electric cooker further comprising a control bracket. The method of claim 1,
The outer periphery of the pressure-responsive actuating means is provided with a split type bracket which is coupled to the support fixed and supported, respectively. The method of claim 1,
The bottom of the top heater stainless plate is an electric cooker, characterized in that the auxiliary packing for sealing the space between the inner pot cover.

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