KR20100081242A - Heater assembly for multi-function microwave oven - Google Patents

Abstract

The present invention relates to a heater assembly of a multi-functional microwave oven, and includes a heat dissipation cover for preventing heat generated by the heater from being discharged to the outside, and a heater cover fastened to the heat dissipation cover from the outside of the heat dissipation cover. The heat dissipation cover and the heater cover is provided with a protrusion so as to be spaced apart.

According to the present invention, since the heat dissipation cover and the heater cover are fastened to be spaced apart, the residual heat which is not blocked by the heat dissipation cover can be prevented from being transferred to the heater cover as it is, thereby maximizing the heat insulation effect.

Description

Heater combination of multifunctional microwave oven {HEATER ASSEMBLY FOR MULTI-FUNCTION MICROWAVE OVEN}

The present invention relates to a microwave oven, and more particularly, to a heater assembly of a multifunctional microwave oven in which a surface contact is not made when the heater cover is fastened to the upper side of the heat dissipation cover.

Various kinds of apparatuses have been proposed to date as heating apparatuses for heating foods. The most basic heating device is a container that is in direct contact with the heat source, the contents to be cooked in such a container can be cooked by applying heat to heat.

In addition, many types of cooking apparatuses that use electric energy directly or indirectly have been developed. As an example, a microwave oven using microwaves as a heating source can be cited. A microwave oven is a cooking apparatus that generates microwaves using electricity to infiltrate a cooking object and heats the cooking object by causing molecular motion therein.

A common microwave oven is a kitchen appliance that heats the inside and the outside of the microwave by irradiating the microwave with high frequency of the magnetron, and greatly reduces the cooking time of the food due to high thermal efficiency, and loses nutritional value during cooking, thawing and warming of the food. It is also widely used because of the advantages such as cooking directly while the food is stored in the container.

In addition, recently, there is a single-function microwave oven that cooks food using a microwave of 2450 MHz, which is only fired from a magnetron. In addition to microwaves, a grill heater is provided above or below the cooking chamber to serve as a grill. There is a multifunctional microwave oven, such as a microwave oven having a grill, or a microwave oven having a convection heater and a convection fan at the rear of the cooking chamber in addition to the microwave and having an oven function to convection hot air.

In a general multifunctional microwave oven, a heater is installed on the upper side of the main body constituting the cooking chamber to enable cooking by heat. An upper side of the heater is provided with a heat dissipation cover for preventing the loss of heat generated by the heater and a heater cover for protecting the heater and the heat dissipation cover.

The heater cover is provided outside the heat dissipation cover, and a pair of through holes are formed at both ends in the longitudinal direction. The heater cover is provided with a heater support portion provided with a pair of installation holes so as to penetrate the heater.

In the multifunctional microwave oven according to the prior art, since the heat dissipation cover provided to prevent heat from being radiated to the outside of the heater is combined with the heater cover surrounding the cover, the heat is not blocked through the heat dissipation cover. As it is transmitted to the cover as it is, there is a problem that the heat insulation effect by the heat dissipation cover is less than expected. Therefore, there is a need for improvement.

The present invention was made to improve the problems of the prior art as described above, to provide a heater assembly of the multi-functional microwave oven to improve the thermal insulation effect by preventing the surface contact is made when the heater cover is fastened to the upper side of the heat dissipation cover. The purpose is.

Heater assembly of a multi-functional microwave oven according to an aspect of the present invention comprises: a heat dissipation cover to prevent the heat generated by the heater to be discharged to the outside; And a heater cover fastened to the heat dissipation cover at an outer side of the heat dissipation cover, wherein the heat dissipation cover is provided with a protrusion to fasten the heat dissipation cover and the heater cover to be spaced apart.

Preferably, the protruding portion is a boss portion in which threads are formed on an inner circumferential surface thereof.

According to another aspect of the present invention, a heater assembly of a multifunctional microwave oven includes: a heat dissipation cover to prevent heat generated by a heater from being discharged to the outside; And a heater cover fastened to the heat dissipation cover at an outer side of the heat dissipation cover, and a spaced portion is provided between the heat dissipation cover and the heater cover such that the heat dissipation cover and the heater cover are spaced apart from each other.

Preferably, the spacer comprises a material having low thermal conductivity.

According to the heater assembly of the multi-functional microwave oven according to the present invention, unlike the prior invention, the heat dissipation cover and the heater cover is fastened to be spaced apart so that the remaining heat not blocked by the heat dissipation cover as it is transferred to the heater cover as a heat insulating effect Can be maximized.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the multifunction microwave oven according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is an exploded perspective view of a microwave oven according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a heater assembly according to an embodiment of the present invention, Figure 3 is a heater assembly according to an embodiment of the present invention Side cross section view.

1 to 3, the microwave oven 100 is provided with a cavity 130 inside the case 101, and the cavity 130 is separated from the cooking chamber 131 formed by opening one side thereof. And an electrical equipment room 132 in which the electrical equipment is installed. The front of the cavity 130 is provided with a door (not shown) for opening and closing the cooking chamber 131.

In the cooking chamber 131, a space in which cooking is formed is formed, and in the electrical chamber 132, a magnetron (not shown) radiating high frequency and a high voltage transformer (not shown) applying high voltage to the magnetron, and a magnetron and a high voltage transformer are provided. Various electrical components such as cooling fans (not shown) for cooling are provided. In addition, a control unit (not shown) for operating an operation of the microwave oven 100 is provided in front of the electric compartment 132.

The heater assembly 110 is provided at the upper portion of the cavity 130, and a plurality of holes are formed in the upper surface of the cavity 130 to allow radiant heat radiated from the heater 111 to pass into the cooking chamber 131.

The heater assembly 110 is configured to include a heater 111, a heat dissipation cover 112 surrounding the outside of the heater 111, and a heater cover 113 installed on the outside of the heat dissipation cover 112 to form an appearance. .

The heater 111 is configured to generate heat, and both ends are provided with heater insulation parts 111a for electrical insulation and other components.

The heat dissipation cover 112 is disposed to surround the outside of the heater 111 to block the heat generated by the heater 111 from being discharged to the outside.

An upper surface of the heat dissipation cover 112 is provided with a boss portion 112a protruding upward.

As a result, when the heat dissipation cover 112 and the heater cover 113 surrounding the fastening cover are fastened, the upper surface of the heat dissipation cover 112 and the lower surface of the heater cover 113 are spaced apart by the protruding height of the boss portion 112a.

 The thread 112b is formed in the inner peripheral surface of the boss part 112a. Thus, the fastening member (not shown) is fastened to the boss portion 112a by passing through the fastening hole 113a formed on the upper surface of the heater cover 113, so that the heat dissipation cover 112 and the heater cover 113 are boss portions ( The fastening is spaced apart by the protruding height of 112a).

The heater cover 113 forms the appearance of the heater assembly 110 and is disposed to surround the outside of the heat dissipation cover 112.

Since the heat dissipation cover 112 and the heater cover 113 are separated by a predetermined distance by the boss portion 112a provided in the heat dissipation cover 112, the residual heat not blocked by the heat dissipation cover 112 is applied to the heater cover 113. Instead of being transmitted as it is, it is transmitted to the heater cover 113 through a space between the heat dissipation cover 112 and the heater cover 113. Therefore, the amount of residual heat transmitted to the heater cover 113 is greatly reduced.

Heater support parts 114 are installed at both ends of the heater cover 113. The heater support hole 114 is provided with a heater mounting hole portion 114a on which the heater 111 is mounted, as many as the number of installations of the heater 111, so that the heater 111 is seated so as not to be separated.

As such, since the heater 111 can be fixed without being assembled to the heater cover 113, a separate mounting member is not required, and thus manufacturing cost can be reduced.

Although not shown in the drawings, the heater cover 113 is provided with a flange (not shown) extending toward the outside of the four side wall portion, the flange is a heater cover 113 is a separate bolt such as a bolt on the upper surface of the cavity 130 It is mounted in combination with the fastening member.

In one embodiment of the present invention, the boss portion 112a is provided on the top surface of the heat dissipation cover 112 so that the heat dissipation cover 112 and the heater cover 113 are fastened at a predetermined distance from each other, and another embodiment of the present invention. In the present invention, the spacer 116 is disposed between the heat dissipation cover 112 and the heater cover 113.

Since the heat dissipation cover 112 and the heater cover 113 are fastened to be spaced apart by the height of the spacer 116 by the arrangement of the spacer 116, the residual heat not blocked by the heat dissipation cover 112 as described above. The amount of residual heat that is transmitted to the heater cover 113 through the space between the heat dissipation cover 112 and the heater cover 113 and is transmitted to the heater cover 113 is greatly reduced without being transmitted to the heater cover 113 as it is. .

Since the spacer 116 is configured to reduce the amount of heat transferred from the heat dissipation cover 112 to the heater cover 113, it is preferable to include a material having low thermal conductivity.

On the upper side of the microwave oven 100 on which the heater cover 113 is mounted, a support unit 140 supporting the heater insulation unit 111a is formed. The support 140 is formed so that the plate forming the upper portion of the cavity 130 protrudes upward, thereby stably supporting the fixing of the heater 111 while reducing shaking or positional change of the heater 111.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is an exploded perspective view of a microwave oven according to an embodiment of the present invention.

2 is an exploded perspective view of a heater assembly according to an embodiment of the present invention.

Figure 3 is a side cross-sectional view of the heater assembly according to an embodiment of the present invention.

Figure 4 is a side cross-sectional view of a heater assembly according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: microwave oven 110: heater assembly

111 heater 112 heat dissipation cover

113: heater cover 114: heater support

Claims (4)

A heat dissipation cover which prevents heat generated by the heater from being discharged to the outside; And A heater cover coupled to the heat dissipation cover at an outer side of the heat dissipation cover, The heat dissipation cover is a heater assembly of the multi-function microwave oven, characterized in that the projecting portion is provided so that the heat dissipation cover and the heater cover are fastened spaced apart. The method of claim 1, The protrusion is a heater assembly of the multifunctional microwave oven, characterized in that the boss portion is formed on the inner thread. A heat dissipation cover which prevents heat generated by the heater from being discharged to the outside; And A heater cover coupled to the heat dissipation cover at an outer side of the heat dissipation cover, The heater assembly of the multi-function microwave oven, characterized in that a spaced portion is provided between the heat dissipation cover and the heater cover so that the heat dissipation cover and the heater cover are spaced apart. The method of claim 3, The spacer unit of the multifunctional microwave oven, characterized in that the spacer comprises a low thermal conductivity material.

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