KR102144693B1 - electric cooker - Google Patents

Abstract

Water is condensed on the lower surface of the oven cover to reduce the whitening phenomenon caused by falling water over the rice, so that the quality of insulation is improved, but productivity and compatibility are improved, the present invention provides a main body provided with an inner pot having a food receiving space; A lid coupled to the upper portion of the body to open and close; A control plate provided on a lower surface of the lid and having a communication hole provided with a pressure response operation means for adjusting the pressure of the inner space of the inner pot; A lead plate having a corresponding hole communicating with the communication hole, comprising a mounting portion on which the control plate is disposed and a heat transfer portion formed along an outer side of the mounting portion, and integrally covering the lid and a lower surface of the control plate; And a lead heater including a heat wire provided on the upper side of the lead plate to generate heat, and a heat diffusion sheet in surface contact with the upper surface of the lead plate so that heat of the heat wire diffuses.

Description

Electric cooker

The present invention relates to an electric cooker, and more particularly, to an electric cooker with improved productivity and compatibility by reducing the whitening phenomenon that occurs due to water condensation on the bottom of the oven cover and water falling onto the rice.

In general, an electric cooker is a device used to cook food, and includes a main body in which an inner pot in which food is accommodated, and a lid covering an upper portion of the main body.

Hereinafter, a conventional electric cooker will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing a lid of a conventional electric cooker.

As shown in FIG. 1, the conventional electric cooker 100 includes a lid 10, a control plate 12, a lead plate 11, a lead heater 14, and an oven cover 13.

Here, the lid 10 is coupled to an upper portion of the main body (not shown) to be opened and closed, and includes an outer cover forming an exterior and an inner cover fastened to a lower portion of the outer cover. Further, an oven cover 13 made of a metal material is provided under the inner cover to cover the upper portion of the inner pot (not shown) provided in the main body (not shown).

At this time, the lead heater 14, the lead plate 11, and the control plate 12 are provided on the upper side of the oven cover 13, and between the control plate 12 and the lead plate 11 A hole packing 15 is provided, and a control packing 16 is provided between the lead plate 11 and the oven cover 13.

Here, the oven cover 13 prevents steam or rice generated during cooking from contacting the lead plate 11, and a steam discharge hole 13a through which the steam inside the inner pot flows is formed.

In addition, a corresponding hole 11a communicating with the vapor discharge hole 13a is formed in the lead plate 11, and the control plate 12 is disposed along a region in which the corresponding hole 11a is formed.

At this time, the control plate 12 is provided with a communication hole communicating with the corresponding hole 11a, and the steam inside the inner pot may flow into the communication hole through the steam discharge hole 13a and the corresponding hole 11a, Each communication hole is equipped with a solenoid valve, a pressure weight valve, and various safety devices to control the pressure inside the inner pot.

Here, the lead heater 14 is attached to the upper surface of the lead plate 11, and heats the oven cover 13 by generating heat during warming.

However, in the related art, since the control plate 12 is closely coupled to the lead plate 11, the lead heater 14 cannot be attached to a region where the control plate 12 is coupled.

Accordingly, the oven cover 13 at the portion corresponding to the lower region of the control plate 12 has a lower temperature than the other portions because heat from the lead heater 14 is not transferred smoothly, and condensation of water vapor And there is a problem that the thermal insulation quality is deteriorated by causing whitening phenomenon due to dropping.

Accordingly, there has been an attempt to reduce the temperature difference between the lower region of the control plate 12 and the outer region thereof by providing a separate heater below or above the control plate 12, but a complicated design change is required. As a result, there was a problem that reduced productivity and increased production cost.

Korean Utility Model Registration No. 20-0249764

In order to solve the above problems, the present invention is to provide an electric cooker with improved productivity and compatibility by reducing the whitening phenomenon caused by water condensation on the bottom of the oven cover and dripping onto the rice. do.

In order to solve the above problems, the present invention is a main body provided with an inner pot formed with a food receiving space; A lid coupled to the upper portion of the body to open and close; A control plate provided on a lower surface of the lid and having a communication hole provided with a pressure response operation means for adjusting the pressure of the inner space of the inner pot; A lead plate having a corresponding hole communicating with the communication hole, comprising a mounting portion on which the control plate is disposed and a heat transfer portion formed along an outer side of the mounting portion, and integrally covering the lid and a lower surface of the control plate; And a lead heater including a heat wire provided on the upper side of the lead plate to generate heat, and a heat diffusion sheet in surface contact with the upper surface of the lead plate so that heat of the heat wire diffuses.

Here, it is preferable that the heat diffusion sheet is provided with an extension portion extending inward of the mounting portion so that heat is transferred from the heat transfer portion in which the heating wire is disposed to the mounting portion.

At this time, it is preferable that the extension portions are separated from each other and divided into a plurality of portions.

In addition, it is preferable that a through hole is formed in the extension part along a portion corresponding to a screw hole into which the control plate is screwed.

On the other hand, it is preferable to further include an overlapping extension portion which is separately provided in a shape corresponding to the mounting portion and is coupled to overlap the extension portion, and wherein a through portion is formed along a portion corresponding to the corresponding hole.

Moreover, the heat diffusion sheet is preferably provided with an aluminum tape, and is bonded to and bonded to the upper surface of the lead plate.

And, it further includes an overlapping extension separately provided in a shape corresponding to the mounting portion, wherein the overlapping extension portion is formed with an overlapping coupling portion extending outwardly spaced apart from each other along an edge so as to overlap and couple with the thermal diffusion sheet, the corresponding It is preferable that the through portion is formed along the portion corresponding to the hole.

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

First, the lead heater is provided with an extension part extending toward the mounting part on the heat diffusion sheet for heat diffusion of the heating wire to reduce the temperature deviation in the oven cover. Therefore, the heating wire required to maintain the entire oven cover above the vapor condensation prevention temperature so as to prevent whitening. Since the heating amount of can be reduced, the amount of energy consumed can be reduced, and the heat insulation quality can be improved by preventing drying and discoloration of food adjacent to the heating wire due to high temperature.

Second, the extension part can be conveniently provided by extending one side of the thermal diffusion sheet or attaching a separate metal sheet to overlap the thermal diffusion sheet, so it can be manufactured without complicated design changes, and is easily applied to pre-production products. Because it is possible, the productivity and compatibility of the product can be improved.

Third, the extension parts are separated from each other and are divided into a plurality of parts, so that each divided part can be independently deformed according to the shape of the adhesive part, so it can be flexibly deformed along the rounded inner surface of the bent step portion and the step portion to be accurately adhered. Therefore, the heat transfer area can be maximized, and the thermal insulation efficiency can be improved. In addition, it is possible to prevent the product from being caught and separated from other parts during assembly.

1 is an exploded perspective view showing a lid of a conventional electric cooker.
Figure 2 is an exploded perspective view showing the lid of the electric cooker according to the first embodiment of the present invention.
3 is a plan view showing a state in which the lead heater is coupled to the lead plate in the electric cooker according to the first embodiment of the present invention.
4 is a plan view showing a state in which an overlapping extension part is coupled to a mounting part in the electric cooker according to the second embodiment of the present invention.
5 is a plan view showing an overlapping extension according to a third embodiment of the present invention.

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

2 is an exploded perspective view showing the lid of the electric cooker according to the first embodiment of the present invention, and FIG. 3 is a plan view showing a state in which the lead heater is coupled to the lead plate in the electric cooker according to the first embodiment of the present invention. .

2 to 3, the electric cooker includes a main body (not shown), a lid 110, a control plate 120, a lead plate 140, and a lead heater 130.

Here, the main body (not shown) may accommodate an inner pot (not shown) in which a food receiving space is formed therein, and a heating unit for heating the inner pot and a control unit for controlling a temperature of the heating unit may be provided. In addition, the lid 110 includes an inner cover 112 and an outer cover 111, and is coupled to an upper portion of the main body to open and close.

Meanwhile, the control plate 120 is provided on the lower surface of the inner cover 112 of the lid 110, and a plurality of communication holes 121 through which steam flows are formed. In addition, a pressure response operating means (not shown) is provided in each communication hole 121.

Here, the pressure response operation means is a device that is selectively operated according to the pressure inside the inner pot and is connected to the lid 110, and includes a pressure weight valve and a solenoid valve, a non-return type steam discharge unit, and a lid opening prevention unit. .

Meanwhile. The lead plate 140 is provided to integrally cover the inner cover 112 of the lid 110 and the lower surface of the control plate 120, and the inside of the mounting portion 141 on which the control plate 120 is disposed A corresponding hole 144 communicating with the communication hole 121 is formed along the line.

In addition, the oven cover 150 is detachably coupled to the lower surface side of the lead plate 140 and has a vapor discharge hole 152 formed at a portion corresponding to the mounting portion 141.

At this time, the oven cover 150 is coupled to the upper end of the inner pot (not shown) when the lid 110 is closed, and when combined, the steam inside the inner pot (not shown) is the steam discharge hole 152, the corresponding hole It may flow to the pressure response operating means (not shown) through the 144 and the communication hole 121.

On the other hand, the lead heater 130 is provided on the upper side of the lead plate 140, a heating wire 131 that generates heat, and the top surface of the lead plate 140 so that the heat of the heating wire 131 is spread. It includes a thermal diffusion sheet (132).

Here, the lead heater 130 generates heat during warming and heats the lead plate 140 to increase the temperature of the oven cover 150 to prevent condensation of steam on the lower surface of the oven cover 150. Insulation quality can be improved by preventing whitening caused by it.

In addition, the heating wire 131 is provided as a heating wire that generates heat by electric resistance, and can be flexibly deformed and installed according to the surface shape of the lead plate 140, and the heating wire 131 is the heat diffusion sheet 132 It is preferably installed on the heat transfer part 142 of the lead plate 140 in a state in close contact with each other.

In this case, the thermal diffusion sheet 132 may be formed of a material having excellent thermal conductivity. That is, the thermal diffusion sheet 132 may be provided with a tape or sheet made of aluminum or copper, or a plastic sheet having high thermal conductivity, and is provided with an aluminum tape and bonded to the upper surface of the lead plate 140. It is desirable to be.

Accordingly, the heat generated from the heating wire 131 can be smoothly diffused along the heat diffusion sheet 132 having high thermal conductivity, and the lead plate 140 is passed through the wide heat transfer area of the heat diffusion sheet 132. It can be heated more effectively.

Meanwhile, a stepped portion 143 stepped to surround the lower edge of the control plate 120 is formed at the edge of the mounting portion 141, and the heat transfer portion 142 along the outside of the stepped portion 143 It is preferable that is formed.

Here, the lower surface of the control plate 120 is seated on the mounting part 141, the heat transfer part 142 supplies heat to the upper surface of the oven cover 150, and the stepped part 143 is the mounting part Step 141 and the heat transfer unit 142 are connected.

At this time, as the stepped portion 143 surrounds the lower edge of the control plate 120, and a ring-shaped hole packing 123 is provided between the flow holes 121 and the corresponding holes 144, Steam introduced into the corresponding hole 144 may flow into the communication hole 121 without leaking toward the heating wire 131.

In addition, it is preferable that the oven cover 150 has a bent portion 151 formed along a portion corresponding to a lower surface of the stepped portion 143 and the mounting portion 141 of the lead plate 140. Here, a ring-shaped control packing 146 is provided on the inner rim of the bent part 151 and is in close contact with the rim of the mounting part 141 of the lead plate 140, so that the response through the vapor discharge hole 152 Leakage of the vapor flowing through the hole 144 may be prevented.

Meanwhile, the heat diffusion sheet 132 extends to the inside of the mounting part 141 so that heat is transferred from the heat transfer part 142 on which the heating wire 131 is disposed to the stepped part 143 and the mounting part 141 It is preferable that the extension portion 133 is provided.

At this time, the extension part 133 smoothly transfers the heat supplied from the heating wire 131 to the mounting part 141 to which the control plate 120 is coupled, so that the heat transfer part 142 and the mounting part 141 The temperature difference between them can be reduced.

division Heat transfer part temperature Mounting part temperature With extension 79.5℃ 72.9℃ No extension 82.8℃ 72.9℃

Table 1 shows the temperature of the heat transfer part 142 for raising the temperature of the mounting part 141 of the lead plate 140 to a temperature at which steam is not condensed while the heating wires 131 are disposed at the same position. At this time, it was experimentally found that steam condensation and dripping water do not occur in the oven cover 150 when the temperature of the lead plate 140 is 72.9°C or higher.

At this time, the temperature of the mounting portion 141 was measured at the central portion (B) of the mounting portion 141, and the temperature of the heat transfer portion 142 was measured at the central portion (A) of the lead plate 140 outside the mounting portion 141.

As shown in Table 1, when there is no extension part 133, the temperature of the heat transfer part 142 should be increased to 82.8℃ in order to raise the mounting part 141 to 72.9℃, but if the extension part 133 is provided It can be seen that when the temperature of the heat transfer unit 142 rises to 79.5° C., the temperature of the mounting unit 141 is heated to a temperature for preventing vapor condensation.

In this way, since the heat generated from the heating wire 131 can be smoothly diffused to the mounting part 141 by the extension part 133, it is necessary to keep the entire oven cover above the vapor condensation prevention temperature so as to prevent whitening. The heating amount of the heating wire can be reduced.

Accordingly, the amount of energy consumed during warming may be reduced, and drying and discoloration of food that may be caused by excessive heating of the adjacent portion of the heating wire may be prevented, thereby improving the warming quality.

In addition, instead of the direct arrangement of the heating wires 131, one side of the heat diffusion sheet 132 is extended or a separate metal sheet is provided and attached so as to overlap one side of the heat diffusion sheet 132 to attach the extension part 133. Since it can be formed, not only can it be produced without complicated design changes, but also it can be easily applied to previously produced products, so that the productivity and compatibility of the product can be improved.

On the other hand, it is preferable that the extension parts 133 are separated from each other to be divided into a plurality of pieces.

In detail, the extension portion 133 can be independently deformed according to the shape of the portion to which each portion is divided, so that it is flexible along the rounded inner surface of the bent step portion 143 and the step portion 143 The heat transfer area can be maximized and the thermal insulation efficiency can be improved because it is accurately adhered to without being deformed and folded or twisted. In addition, it is possible to prevent the product from being caught and separated from other parts during assembly.

Meanwhile, a plurality of coupling portions 122 protrude along the outer periphery of the control plate 120, and screw holes may be formed in each coupling portion 122. Further, a screw hole 145 is formed in the lead plate 140 along a portion corresponding to the screw hole, so that the control plate 120 may be coupled by a screw or the like.

In this case, it is preferable that a through hole 134 is formed in the extension part 133 along a portion corresponding to the screw hole 145.

Meanwhile, FIG. 4 is a plan view showing a state in which an overlapping extension part is coupled to a mounting part in the electric cooker according to the second embodiment of the present invention, and FIG. 5 is a plan view showing the overlapping extension part according to a third embodiment of the present invention.

In the second and third embodiments, the basic configuration is the same as that of the first embodiment, except that the overlapping extension units 160 and 260 are separately provided, so a detailed description of the same configuration will be omitted.

As shown in FIG. 4, the electric cooker 200 is separately provided in a shape corresponding to the mounting part 141 and coupled to overlap the extension part 133, and a portion corresponding to the corresponding hole 144 is formed. Accordingly, it may further include an overlapping extension 160 in which the through portion 161 is formed.

In this case, a plurality of through portions 161 may be formed corresponding to each of the corresponding holes 144, but in the second embodiment, the through portions 161 have a size such that all corresponding holes 144 are exposed. It is shown as an example that is formed by.

In addition, the overlapping extension unit 160 receives heat generated from the heating wire 131 through the portion C that overlaps the extension unit 133, and transfers the heat to the mounting unit 141.

Accordingly, since the heat of the heating wire 131 can be more smoothly transferred to the mounting portion 141, the thermal insulation efficiency of the product can be improved.

Of course, as shown in FIG. 5, the overlapping extension portion 260 may be formed with an overlapping coupling portion 262 that is spaced apart from each other along an edge and extends toward the heat transfer portion 142.

Here, the overlapping extensions 160 and 260 may be made of a material having a high thermal conductivity, the same as the thermal diffusion sheet 132, and may be provided with a sheet or tape formed of aluminum or copper, a plastic sheet, etc., preferably Is provided with aluminum tape.

For this reason, even when the thermal diffusion sheet 132 does not have the extension portion 133, the overlapping extension portion 260 may be overlapped and coupled to the thermal diffusion sheet 132 through the overlapping coupling portion 262.

Accordingly, the overlap extension unit 260 may be mounted interchangeably with the conventional lead heater 130 that has been previously produced, and can be applied to a previously produced product without a design change, so that the productivity of the product may be improved.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified and implemented by those of ordinary skill in the art without departing from the scope claimed in the claims of the present invention. And, these modifications are within the scope of the present invention.

100,200: electric cooker 10,110: lid
11,140: lead plate 12,120: control plate
121: communication hole 13,150: oven cover
14,130: lead heater 133: extension
141: mounting portion 142: heat transfer portion
143: step portion 144: corresponding hole
151: bent part 152: steam discharge hole
160,260: overlap extension 161,261: penetration
262: overlapping joint

Claims (7)

A main body provided with an inner pot in which a food accommodation space is formed;
A lid coupled to the upper portion of the main body to open and close;
A control plate provided on a lower surface of the lid and having a communication hole provided with a pressure response operation means for adjusting the pressure of the inner space of the inner pot;
A lead plate having a corresponding hole communicating with the communication hole, comprising a mounting portion on which the control plate is disposed and a heat transfer portion formed along an outside of the mounting portion, and integrally covering the lid and a lower surface of the control plate; And
A lead heater including a heat wire provided on the upper side of the lead plate to generate heat, and a heat diffusion sheet in surface contact with the upper surface of the lead plate so that heat of the heat wire diffuses,
An electric cooker, characterized in that the heat diffusion sheet is provided with an extension part extending into the mounting part so that heat is transferred from the heat transfer part on which the heating wire is disposed to the mounting part. delete The method of claim 1,
The electric cooker, characterized in that the extension portions are separated from each other and provided in a plurality. The method of claim 1,
The electric cooker, characterized in that the through hole is formed in the extension part along a portion corresponding to the screw hole into which the control plate is screwed. The method of claim 1,
The electric cooker, further comprising an overlapping extension portion provided separately in a shape corresponding to the mounting portion and coupled to overlap the extension portion, wherein a through portion is formed along a portion corresponding to the corresponding hole. The method of claim 1,
The heat diffusion sheet is provided with an aluminum tape, the electric cooker, characterized in that the bonded to the upper surface of the lead plate. A main body provided with an inner pot in which a food accommodation space is formed;
A lid coupled to the upper portion of the main body to open and close;
A control plate provided on a lower surface of the lid and having a communication hole provided with a pressure response operation means for adjusting the pressure of the inner space of the inner pot;
A lead plate having a corresponding hole communicating with the communication hole, comprising a mounting portion on which the control plate is disposed and a heat transfer portion formed along an outside of the mounting portion, and integrally covering the lid and a lower surface of the control plate;
A lead heater including a heating wire provided on the upper side of the lead plate to generate heat, and a heat diffusion sheet in surface contact with the upper surface of the lead plate so that heat of the heating wire diffuses; And
Including an overlapping extension separately provided in a shape corresponding to the mounting portion,
An electric cooker, characterized in that the overlapping portion is formed with an overlapping portion that is spaced apart from each other along an edge so as to overlap and couple with the thermal diffusion sheet and extend outwardly, and a through portion is formed along a portion corresponding to the corresponding hole. .

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