KR101218638B1 - electric cooker and method for manufacturing thereof - Google Patents

Abstract

In order to improve the functionality and quality of the product, the present invention is formed of stainless steel is coupled to the lower surface of the lid, the inner pot packing coupling portion and the locking ring coupling portion integrally bent to seal the upper inner pot to the rim integrally formed top heater Stainless plate; Pressure response operating means arranged to be connected to the lid to selectively discharge steam in accordance with the pressure inside the inner pot; And a control bracket coupled to one side of an upper surface of the top heater stainless plate and having a mounting portion formed so that the pressure-responsive operation means is mounted and fixed and supported.

Description

Electric cooker and method for manufacturing thereof

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 response operation means of the conventional electric cooker, Figure 3 is a pressure response operation means of the conventional electric cooker is coupled It is sectional drawing which shows the top heater 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. It was difficult to prevent the increase in the number of parts, there was a problem that the ease of use, productivity and economic efficiency is lowered.

In addition, the top heater plate 3 is formed with a through hole in which the pressure adjusting means for adjusting the pressure inside the inner pot 9 is formed. Since the inner circumferential surface of the through hole has a structure that is difficult to be surface treated, steam of high temperature and high pressure is formed. Erosion of the inner circumferential surface of the through hole occurred easily during the ejection process. 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 inner pot packing coupling portion and the locking ring coupling portion is formed integrally bent on the rim so as to cover the entire inner pot upper surface and the steam is A top heater stainless plate having a discharge steam hole formed therein; Pressure response operation means which is provided to be connected to the lid to selectively operate according to the height of the inner pressure of the inner pot, the flow path formed therein communicates with the steam discharge hole; And a control bracket coupled to one side of an upper surface of the top heater stainless plate, the mounting bracket having a mounting hole configured to be fixed and supported at a predetermined position by joining an outer surface of the end side of the pressure-responsive operation means. .

In addition, the present invention is formed to cover the entire inner pot upper surface by sealing the material of the stainless steel material to form the inner pot packing coupling portion and the locking ring coupling portion on the rim to produce a top heater stainless plate, and the material of aluminum A first step of manufacturing a control bracket having a mounting portion formed with a mounting hole fixed and supported at a predetermined position by joining an end surface of the pressure response operating means by die casting; A second step of fixing the support and the coupling member to an upper surface of the top heater stainless plate; Mounting a sealing member on the top heater stainless plate and coupling the control bracket to the support; A fourth step of fixing the pressure response operating means to the control bracket; And a fifth step of coupling the lower part of the top lower cover disposed on the lower portion of the lid to the coupling member.

Through the above solution, the electric cooker of the present invention provides the following effects.

First, since the top heater stainless plate is manufactured using stainless steel, the upper portion of the inner pot having high temperature and high pressure steam is sealed by the top heater stainless plate made of stainless steel, thereby providing effective corrosion prevention and cleanliness. .

Second, since the ends of the pressure-responsive actuating means are combined with the mounting holes formed in the control bracket, they can be precisely fixed and supported at a predetermined position, thereby providing a precise mounting structure and a stable supporting structure.

Third, various devices of the pressure-responsive actuating means are assembled and fixed to the control bracket which is coupled to one side of the upper surface of the top heater stainless plate, so that they can be easily and accurately connected to the steam outlet hole formed in the top heater stainless plate. The assembly convenience can be significantly improved.

1 is a cross-sectional view showing a conventional electric cooker.
Figure 2 is a perspective view showing a top heater plate is coupled to the pressure response operation means of the conventional electric cooker.
Figure 3 is a cross-sectional view showing a top heater plate coupled to the pressure response operation means of the conventional electric cooker.
Figure 4 is a perspective view showing a top heater stainless plate coupled to the control bracket of the electric cooker according to a preferred embodiment of the present invention.
Figure 5 is a perspective view showing a top heater stainless plate coupled to the control bracket and locking ring of the electric cooker according to a preferred embodiment of the present invention.
Figure 6 is an exploded perspective view showing a top heater stainless plate coupled to the control bracket of the electric cooker according to a preferred embodiment of the present invention.
Figure 7 is a cross-sectional view showing a top heater stainless plate coupled to the control bracket of the electric cooker according to a preferred embodiment of the present invention.
8 is a flowchart illustrating a method of manufacturing an electric cooker according to a preferred embodiment of the present invention.

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

4 is a perspective view showing a top heater stainless plate coupled to the control bracket of the electric cooker according to a preferred embodiment of the present invention, Figure 5 is a control bracket and locking ring of the electric cooker according to a preferred embodiment of the present invention is coupled A perspective view showing a top heater stainless plate.

As shown in Figures 4 and 5, the electric cooker according to the present invention comprises a top heater stainless plate 100, pressure response operation means 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, it is preferably provided to cover the entire upper surface of the inner pot. In addition, the inner pot packing coupling part (103 in FIG. 7) to which the inner pot packing (103a of FIG. 7) is coupled to seal the upper portion of the inner pot on the edge of the top heater stainless plate 100 is locked to the locking ring 55. The ring joint is integrally bent. To this end, the top heater stainless plate 100 is preferably formed by pressing.

In addition, the top heater stainless plate 100 is formed in a position where a plurality of steam discharge holes (109 of FIG. 6) in communication with the flow path of the pressure-responsive operation means is discharged.

In addition, a plurality of coupling members 101 having mounting grooves formed thereon are fixed to the outer side of the top heater stainless plate 100 by spot welding or the like, and the coupling member 101 is the top heater. The stainless plate 100 is mediated to the lower end of the top lower cover disposed under the lid of the cooker.

That is, the bottom surface of the coupling member 101 may be fixed by spot welding to the top heater stainless plate 100, and an upper portion thereof is coupled to a lower end of the top lower cover by a separate fastening member and a spring is formed on the outer circumference. 102 is interposed.

Of course, the coupling member 101 is fixed to the top heater stainless plate 100, such as rivet joint to bolt fastening, instead of being fixed in the manner of spot welding, such as a member to mediate the coupling with the lid Could be replaced by

On the other hand, the pressure response operation means is a variety of devices that are selectively operated according to the height of the inner pressure of the inner pot, pressure adjusting means including a pressure valve valve 121 and the solenoid valve 123, and a non-return type steam discharge unit ( 125) and the safety device including the lid opening preventing portion 127 is preferably made. 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.

In addition, the control bracket 110 is coupled to one side of the upper surface of the top heater stainless plate 100, the mounting portion is formed so that the respective devices of the pressure response operation means is mounted, fixed and supported.

At this time, a separate bracket is connected to the outer circumference of each device of the pressure-responsive actuating means seated in the mounting hole (111 of FIG. 6) of the control bracket 110 is a fastening member such as a screw that is fastened through the bracket. It may be fastened to the control bracket 110 to be fixed. Of course, the pressure valve 121 has a screw thread formed on the outer circumference of the lower end thereof, and the screw thread may be coupled to a female screw thread formed on the inner circumference of the mounting hole 111.

Figure 6 is an exploded perspective view showing a top heater stainless plate coupled to the control bracket of the electric cooker according to a preferred embodiment of the present invention, Figure 7 is a top heater coupled to the control bracket of the electric cooker according to a preferred embodiment of the present invention It is sectional drawing which shows the stainless plate.

As shown in Figure 6 and 7, the mounting portion of the control bracket 110 is formed with a plurality of mounting holes 111 so that the end side outer surface of the respective devices of the pressure-responsive operation means is combined and fixed in a set position. At this time, the control bracket 110 is preferably formed by die-casting processing as an aluminum material, and excellent heat resistance and less elastic deformation due to external force due to the characteristics of the die-casting and aluminum material of the position and the edge of the mounting hole 111 The precision of the joining structure can be ensured as a suitable strength. Of course, in some cases, the control bracket 110 may be replaced with a synthetic resin injection molding having excellent heat resistance.

Through this, the rim of the mounting hole 111 can be securely fixed and supported in place by the end of each of the devices of the pressure-responsive operation means are accurately matched.

As such, according to the present invention. The upper portion of the inner pot in which the high temperature and high pressure steam is covered by the top heater stainless plate 100 made of stainless steel having high corrosion resistance, and each of the devices 121 and 123 of the pressure-responsive operation means for regulating the pressure inside the inner pot. ) Flow path is directly connected to and communicated with the edge of the steam discharge hole 109 of the top heater stainless plate 100. In addition, the control bracket 110 made of aluminum, which serves as an accurate fixing and supporting base of the pressure-responsive actuating means, does not come into contact with steam at high temperature and high pressure, thereby achieving an efficient structure without fear of corrosion.

On the other hand, the control bracket 110 is preferably coupled to the support 105 is fixed to the upper surface of the top heater stainless plate 100 by spot welding or the like. At this time, a fastening groove is formed in an upper portion of the support 105, and a fastening member such as a bolt is fastened to the fastening groove while the upper end of the support 105 is coupled to the coupling hole 113 of the control bracket. The control bracket 110 may be fixed.

Of course, the support 105 is fixed to the top heater stainless plate 100, such as rivet joint to bolt fastening, instead of being fixed in the manner of spot welding and the like, and the coupling with the control bracket 110. It may be replaced by another member that mediates.

On the other hand, the end of each device of the pressure response operating means fixed through the mounting hole 111 of the control bracket 110 is connected to the steam outlet hole 109 formed in the top heater stainless plate 100. Here, the structure of the sealing member 107 for sealing the end side of the pressure-responsive operation means is as follows.

Figure 7 is a cross-sectional view showing a top heater stainless plate coupled to the control bracket of the electric cooker according to a preferred embodiment of the present invention.

As shown in FIG. 7, the flow path 121a formed inside the pressure valve valve 121 shown as an example of the pressure response operating means is connected to communicate with the steam discharge hole 109 of the top heater stainless plate 100. However, the end portion of the pressure-responsive actuating means wraps around the edge of the steam discharge hole 109 and pressurizes and seals the sealing member 107 of a ring shape.

Here, the sealing member 107 is made of a ring shape, the insertion groove 107c is formed along the outer circumferential surface, the clamping portion 107a and the lower protection portion 107b on the upper and lower side of the insertion groove 107c Preferably 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. And, the upper surface of the clamping portion formed on the upper side of the insertion groove 107c is pressed by the lower end of the pressure-responsive operation means to form a seal. That is, the sealing member 107 is pressed between the upper surface of the edge of the steam discharge hole 109 and the end of the pressure-responsive operation means to form a vapor tight seal.

At this time, the upper surface portion of the clamping portion 107a may be formed with a stepped step (107d) in close contact with the lower end of the control bracket 110, as well as the pressure response operation means.

Here, in the case of the safety device of the pressure response operation device, the sealing member may be integrally formed with the diaphragm.

Through this, since the 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, the corrosion of the control bracket 110 disposed in the upper space may be prevented. Can be.

Of course, in some cases, the sealing member 107 may include only the portion corresponding to the clamping portion 107a by omitting the insertion groove 107c and the lower protection portion 107b.

On the other hand, it will be described with reference to Figure 8 the manufacturing method of the electric cooker.

8 is a flowchart illustrating a method of manufacturing an electric cooker according to a preferred embodiment of the present invention.

As shown in Figure 4 to 8, the electric cooker according to the present invention by pressing the processing of a stainless steel material instead of a weak aluminum material to the high temperature and high pressure steam in the inner pot packing coupling for sealing the upper inner pot to the rim and A top heater stainless plate 100 having a locking ring coupling part is manufactured. In addition, the control bracket 110, which can combine a plurality of pressure-responsive operation means to a certain place and combines, is produced by die-casting the aluminum material (s301).

Here, the support member 105 for coupling with the control bracket 110 and the coupling member 101 for coupling with the top lower cover are fixed to the top heater stainless plate 100 (S303). Here, the support 105 and the coupling member 101 is preferably fixed by spot welding, but it may be possible to use other media in accordance with the convenience of the manufacturing process.

On the other hand, the sealing member 107 is mounted to the steam discharge hole 109 formed in the top heater stainless plate 100 (s305). Here, the sealing member 107 is preferably used a stretch material such as silicone rubber, but the material is not limited, it is also possible to use other materials that can maintain the airtight.

Then, the control bracket 110 is coupled to the top heater stainless plate 100 (s307). In detail, a coupling hole formed in the control bracket 110 may be coupled to an upper end of the support 105 provided in the top heater stainless plate 100.

Next, the pressure response operating means is coupled to the control bracket 110 (s309). In detail, the pressure-responsive operation means penetrates and is coupled to the mounting hole 111 formed in the control bracket 110, and fastening coupling means such as screws and fixing pins to the screw grooves formed around the mounting hole 111. The control bracket 110 may be fixed. In this case, the pressure response operation means penetrating the mounting hole 111 of the control bracket 110 is coupled to the steam outlet hole 109 of the top heater stainless plate 100 on which the sealing member 107 is mounted. . In addition, it is preferable to couple the locking ring to the locking ring coupling portion formed on the top heater stainless plate rim.

In addition, the bottom bracket of the top lower cover disposed below the lid of the electric cooker is coupled to the coupling member of the top heater stainless plate 100 to which the control bracket 110 is coupled (s311).

As described above, even though the top heater stainless plate 100 is manufactured by pressing a relatively thin stainless material, the apparatuses of the pressure-responsive actuating means may be manufactured by aluminum die casting and disposed on one side of the control bracket 110. It can be stably fixed and supported. In addition, the control bracket 110 prevents the phenomenon of corrosion or coating peeling off by preventing the high temperature and high pressure of the steam from contacting, and prevents the malfunction of the pressure-responsive operation means, and also prevents the phenomenon of blocking the steam discharge hole due to corrosion. Can be maintained, the cleanliness of the inner pot is maintained, the functionality and stability of the product can be significantly improved.

As described above, the present invention is not limited to the above-described embodiments, but may be modified by those skilled in the art without departing from the scope of the claims of the present invention. Such modifications are within the scope of the present invention.

1: cooker 7: lid
9: inner pot 100: top heater stainless steel plate
101: coupling member 103: inner pot packing coupling portion
105: support 107: sealing member
107a: clamping portion 107b: lower protective portion
107c: Insertion groove 107d: Stepped
109: steam outlet hole 110: control bracket
111: mounting hole 113: coupling hole
121: pressure valve 121a: flow path
123: solenoid valve 125: non-return steam outlet
127: lid open prevention

Claims (8)

The top heater stainless plate is formed of stainless steel and is coupled to the lower surface of the lid, and the inner pot packing coupling part and the locking ring coupling part are integrally bent at the edge to cover and cover the entire inner pot upper part, and the steam discharge hole for discharging steam is formed. ;
Pressure response operation means which is provided to be connected to the lid to selectively operate according to the height of the inner pressure of the inner pot, the flow path formed therein communicates with the steam discharge hole; And
And a control bracket coupled to one side of an upper surface of the top heater stainless plate, the mounting bracket having a mounting hole configured to be fixed and supported at a predetermined position by joining an outer surface of the end side of the pressure-responsive operation means. delete The method of claim 1,
And a sealing member having an insertion groove into which an edge of the steam discharge hole is inserted, and a clamping portion formed on an upper side of the insertion groove to pressurize between the edge of the steam discharge hole and the end portion of the pressure corresponding operation means to seal the steam. Electric cooker characterized in that. The method of claim 1,
And a sealing member pressurized between the steam discharge hole and an end of the pressure-responsive operation means to form a clamping portion for sealing the steam. The method of claim 1,
The control bracket is an aluminum cooker, characterized in that formed by die-casting processing. The method of claim 1,
The top heater stainless plate is an electric cooker, characterized in that formed by pressing. The method of claim 1,
The top heater stainless plate
A plurality of supports for interfacing with the control bracket,
Electro-cooker characterized in that a plurality of coupling members for mediating the coupling with the lower portion of the top lower cover disposed below the lid. It is formed to cover the whole inner pot by sealing the material of stainless steel material, and to seal the inner part of the inner pot, forming the inner pot packing coupling part and the locking ring coupling part to make the top heater stainless plate, and die-casting the aluminum material to cope with pressure. A first step of manufacturing a control bracket having a mounting portion having a mounting hole configured to be fixed and supported at a predetermined position by joining an outer surface of an end side of the operation means;
A second step of fixing the support and the coupling member to an upper surface of the top heater stainless plate;
Mounting a sealing member on the top heater stainless plate and coupling the control bracket to the support;
A fourth step of fixing the pressure response operating means to the control bracket; And
And a fifth step of coupling the lower portion of the top lower cover disposed on the lower portion of the lid to the coupling member.

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