JP3229019U - Microwave oven with barbecue function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microwave oven having a barbecue function, which has a high heat utilization rate and can reduce the influence of heat on other parts to the maximum. A microwave oven with a barbecue function includes a housing 10, a cooking cavity 30 formed by being partitioned by a support plate 20 inside the housing, and a bottom electric room 40, and is inside the bottom electric room. The first concave groove 41 is provided, and the first concave groove extends from the inner wall of the cooking cavity to one side of the bottom electric chamber and is formed inside the bottom electric chamber. A heat insulating layer 42 whose edge is contacted with the side wall of the first concave groove and a first heating pipe 43 provided between the heat insulating layer and the support plate are provided, and the heat insulating layer is the first heating pipe. It reduces the transfer of heat towards the bottom of the first recess. [Selection diagram] Fig. 1

Description

The utility model relates to cooking utensils, specifically microwave ovens having high heating efficiency and a barbecue function capable of protecting bottom parts.

Microwave products include boxes and doors. Inside the box, there is a cooking cavity, food is placed in the cooking cavity, and the door closes the opening of the cooking cavity. The magnetron inside the microwave oven converts electrical energy into microwaves with a vibration frequency of 2450 MHz after energization. The generated microwaves are transmitted through the waveguide to the cooking cavity of the microwave oven, whereby the water molecules in the food generate heat after absorbing the microwaves, and heating the food is realized.

In order to improve the uniformity of distribution of microwaves in the cooking cavity, a microwave stirring unit is generally installed at the microwave input port position of the cooking cavity (corresponding to the microwave output port position of the waveguide box). There is a need. The microwave agitation unit includes a agitation motor and a metal microwave agitator rotated by the agitation motor. The microwave agitator improves the uniformity of the distribution of microwaves in the cooking cavity by performing omnidirectional reflection on the microwaves input into the cooking cavity in the process of rotation, and further, for food heating. The uniformity can be improved.

Microwave oven products have a simple microwave heating function, and also have a function that integrates microwave heating and heating pipe heating. Among them, heating of the heating pipe bakes food and realizes diversification of dishes. To improve the uniformity of barbecue, microwave ovens with barbecue function generally have heating pipes at the top and bottom of the cooking cavity, respectively. Since food is usually placed at the bottom of the cooking cavity, it is necessary to install a food support plate over the heating pipe at the bottom. The conventional food support plate uses a material that does not allow light to pass through, and the amount of heat generated by the heating pipe at the bottom is transferred to the food support plate by heat transfer of air, and then inside the cooking cavity via the food support plate. Is transmitted to. Then, the amount of heat generated by the heating pipe at the bottom is transferred to the periphery and below by air transfer. As a result, of the amount of heat generated from the heating pipe at the bottom, the amount of heat that finally enters the cooking cavity is reduced. Thus, the bottom heating pipe reduces the utilization of thermal energy for heating food and at the same time affects the life and performance of the electronic components around and / or below the heating pipe.

The object of the present invention is that the heat energy utilization rate of a microwave oven having an existing heating pipe is low, and the electrical characteristics of the parts are changed by radiating the heat energy to the parts at the bottom, and the service life is shortened. It is to solve technical problems.

In order to solve the above problems, the present practical novel provides a microwave oven with a barbecue function, and the microwave oven has a housing and a cooking cavity and a bottom portion formed by being separated by a support plate inside the housing. An electric chamber is provided, and a first concave groove is provided inside the bottom electric chamber, and the first concave groove extends from the inner wall of the cooking cavity to one side of the bottom electric chamber. A heat insulating layer formed inside the bottom electric room, the edge of which is abutted on the side wall of the first concave groove, and a second layer provided between the heat insulating layer and the support plate are provided inside the first concave groove. 1 The heating pipe and the heat insulating layer are provided, and the heat insulating layer is used to reduce the heat transfer of the first heating pipe toward the bottom of the first concave groove.

Here, in the present invention, first, the first heating pipe starts to operate to bake and heat the food placed on the support plate, but at this time, the first heating pipe is generated due to the presence of the heat insulating layer. Of the amount of heat generated, the amount of radiation toward the bottom of the first concave groove is reduced to the maximum, while the amount of radiation toward the food support plate of the first heating pipe, that is, the food side is increased. In addition, the influence of the amount of heat from the first heating pipe on other parts under the first concave groove can be reduced to the maximum. Therefore, the present invention is a technique in which the thermal energy utilization rate of a microwave oven in the prior art is low, and the thermal energy is radiated to the bottom component, so that the electrical characteristics of the component are changed and the service life is shortened. Overcome the problem.

FIG. 1 is a diagram showing an internal structure of the microwave oven of the present invention. It is a figure which shows the internal structure of the microwave oven of this invention. It is a schematic diagram of a part of the 1st concave groove of this invention. It is a partially enlarged view of FIG. It is sectional drawing in another direction of FIG. It is an exploded view of this invention.

10 ... Housing; 20 ... Support plate; 30 ... Cooking cavity; 40 ... Bottom electrical room; 41 ... First recessed groove; 411 ... First staircase; 412 ... Second staircase; 413 ... Through hole; 42 ... Insulation layer; 43 ... 1st heating pipe; 430 ... 2nd heating pipe; 44 ... stirring motor; 45 ... microwave stirrer; 46 ... second concave groove; 461 ... horizontal table; 47 ... waveguide box; 48 ... control circuit module; 49 ... Frequency conversion power supply module

Hereinafter, the utility model will be described in more detail with reference to specific examples and drawings of the specification.

As shown in FIGS. 1 to 6, the utility model has a barbecue function including a housing 10, a cooking cavity 30 divided into a housing 10 by a support plate 20, and a bottom electric room 40. Disclose the microwave oven you have.

Among them, the food to be heated is placed on the support plate 20 and located in the cooking cavity 30. An electric and control portion is mainly provided in the bottom electric room 40, and is used for heating the food in the cooking cavity 30.

As shown in FIGS. 1, 3 and 4, specifically, a first concave groove 41 is provided in the bottom electric room 40, and the first concave groove 41 is an inner wall of the cooking cavity 30. Extends from the bottom electric chamber 40 to one side and is formed in the bottom electric chamber 40. The side wall of the first concave groove 41 forms the first staircase 411 and the second staircase 412 in the process of extending from the cooking cavity 30 to the bottom of the first concave groove 41, and the support plate 20 forms the first staircase. It is provided in 411.

Inside the first concave groove 41, a heat insulating layer 42 whose edge is applied to the side wall of the first concave groove 41, and a first heating provided between the heat insulating layer 42 and the support plate 20. A pipe 43 and a pipe 43 are provided. The heat insulating layer 42 is provided on the second staircase 412. The heat insulating layer 42 is used to reduce the amount of heat transferred from the first heating pipe 43 to the bottom of the first concave groove 41.

In the present embodiment, the control circuit module 48 and the frequency conversion power supply module 49 located below the first concave groove 41 are provided in the bottom electric room 40.

In the present embodiment, first, the first heating pipe 43 starts to operate, and the food placed on the support plate 20 on the first heating pipe 43 is baked and heated. At this time, due to the presence of the heat insulating layer 42, the first heating pipe Of the amount of heat generated by 43, the amount of radiation toward the bottom of the first concave groove 41 is reduced to the maximum, while the amount of radiation toward the support plate 20, that is, the food side of the first heating pipe 43 is increased. To. Further, the influence of the amount of heat generated by the first heating pipe 43 on other parts below the first concave groove 41 can be reduced to the maximum extent possible. For example, the influence on the control circuit module 48 and the frequency conversion power supply module 49 can be reduced, the control circuit module 48 and the frequency conversion power supply module 49 can be ensured to operate normally, and the temperature is too high, for example, in a triode. It is possible to prevent an abnormality in electrical properties due to an abnormality in the switch caused by a zero-degree drift of such a component, or a shortening of the service life of the electrical component.

The present invention solves a technical problem that the heat energy utilization rate of an existing microwave oven having a heating pipe is low, the heat energy is radiated to the bottom part, the electrical characteristics of the part are changed, and the service life is shortened.

In another embodiment of the present invention, a stirring motor 44 is further provided in the bottom electric room 40, and a microwave stirrer 45 is connected to the rotating end of the stirring motor 44. When the stirring motor 44 and the microwave stirrer 45 operate, the generated microwaves are uniformly radiated above the support plate 20. A through hole 413 is provided at the bottom of the first concave groove 41. The rotating end of the stirring motor 44 extends into the through hole 413 and is located between the heat insulating layer 42 and the bottom of the first concave groove 41, and the microwave stirrer 45 is the first concave. It is located between the bottom of the groove 41 and the heat insulating layer 42.

In the present embodiment, the heat insulating layer 42 can similarly reduce the influence on the stirring motor 44 located below the bottom of the first concave groove 41 of the first heating pipe 43, and the temperature of the stirring motor 44 can be increased. Prevent the line from becoming abnormal because it is too expensive.

Here, the heat insulating layer 42 can be penetrated by microwaves and is preferably made of mica material. When the microwave oven operates, microwaves generated below the heat insulating layer 42 are radiated above the support plate 20 via the heat insulating layer 42. The heat insulating layer 42 penetrating the microwave is guaranteed to affect the heating efficiency without excessively weakening the microwave radiation. The heat insulating layer 42, which is capable of penetrating microwaves, prevents the heating efficiency from being affected by excessively weakening the amount of microwave radiation.

As shown in FIGS. 2 to 4, in the microwave oven according to another embodiment of the present practical new type, a second concave groove 46 is further provided in the bottom electric room 40, and the second concave groove 46 is provided. Extends from the inner wall of the bottom electrical room 40 and gathers at the bottom to form a horizontal table 461. The second concave groove 46 is located on one side far away from the cooking cavity 30 of the first concave groove 41. The horizontal table 461 is provided with a waveguide box 47 for conducting microwaves, and the stirring motor 44 is fixed to the waveguide box 47. Depending on the mounting position of the stirring motor 44, the rotating end of the stirring motor 44 faces the through hole 413.

In the present embodiment, the microwave is generated below the second concave groove 46, and the generated microwave is confined in a space relatively sealed by the second concave groove 46 and the waveguide box 47. The microwave enters the stirring motor 44 and the microwave stirring device 45 only through the voids in the structure of the waveguide box 47 itself, and radiates uniformly above the support plate 20 during the rotation of the microwave stirring device 45. Will be done. At this time, the waveguide box 47 plays a role of conducting the microwave, ensuring the transmission efficiency of the microwave as much as possible, and preventing the leakage of the microwave in the other direction.

In the embodiment of the utility model, the support plate 20 employs a light transmitting material corresponding to the position of the first heating pipe 43, that is, the amount of heat of the first heating pipe 43 is the light transmitting portion. Can be radiated above the support plate 20 via. Of course, it is also an option to use a translucent material for the entire support plate 20.

In the present embodiment, not only the amount of heat generated by the first heating pipe 43 can be conducted inside the cooking cavity 30 by the method of conduction, but also the amount of heat is conducted inside the cooking cavity 30 by the method of light radiation. You can also. Thereby, the heat conduction rate and the heat utilization rate can be improved.

With reference to FIG. 1, in another embodiment of the present practical new type, the microwave oven further includes a second heating pipe 430 provided above the cooking cavity 30. The second heating pipe 430 has the same function as the first heating pipe 43, and all of them radiate heat amount above the support plate 20. Here, it is preferable that the first heating pipe 43 and the second heating pipe 430 both employ two pipes and are provided in the central portion of the housing 10. This ensures that the heat radiation is evenly distributed throughout the support plate 20.

Finally, although the above embodiments are used only for explaining the present invention and do not limit the scope of the utility model registration claims, the present invention will be described in detail with reference to better embodiments. Those skilled in the art should understand that other utility models obtained by modifying or replacing the utility model technical proposals do not deviate from the claims of the utility model.

Claims (10)

A microwave oven having a barbecue function, the microwave oven includes a housing, a cooking cavity formed by partitioning the inside of the housing by a support plate, and a bottom electric room.
A first concave groove is provided inside the bottom electric room, and the first concave groove extends from the inner wall of the cooking cavity to one side of the bottom electric room and inside the bottom electric room. Formed,
Inside the first concave groove, a heat insulating layer whose edge is contacted with the side wall of the first concave groove and a first heating pipe provided between the heat insulating layer and the support plate are provided. A microwave oven with a barbecue function, wherein the heat insulating layer is used to reduce heat transfer of the first heating pipe toward the lower part of the heat insulating layer. The side wall of the first concave groove forms a first step and a second step in the process of extending from the cooking cavity to the bottom of the first concave groove.
The microwave oven with a barbecue function according to claim 1, wherein the support plate is provided on the first staircase, and the heat insulating layer is provided on the second staircase. A stirring motor is further provided in the bottom electric chamber, and a microwave stirrer is connected to the rotating end of the stirring motor.
A through hole is provided at the bottom of the first concave groove, and the rotating end of the stirring motor passes through the through hole and is a space between the heat insulating layer and the bottom of the first concave groove. The microwave oven with a barbecue function according to claim 2, wherein the microwave agitator extends inward and is located between the bottom of the first concave groove and the heat insulating layer. The microwave oven with a barbecue function according to claim 3, wherein the heat insulating layer can be penetrated by microwaves and is made of a mica material. A second concave groove is further provided inside the bottom electric room, and the second concave groove extends from the inner wall of the bottom electric room and gathers at the bottom to form a horizontal table, and the second concave groove is formed. The groove is located on one side of the first concave groove far away from the cooking cavity.
The microwave oven with a barbecue function according to claim 1, wherein the horizontal table is provided with a waveguide for conducting microwaves. A second concave groove is further provided inside the bottom electric room, and the second concave groove extends from the inner wall of the bottom electric room and gathers at the bottom to form a horizontal table, and the second concave groove is formed. The groove is located on one side of the first concave groove far away from the cooking cavity.
The horizontal table is provided with a waveguide for conducting microwaves, and the stirring motor is fixed to the waveguide.
The microwave oven with a barbecue function according to claim 3, wherein the rotating end of the stirring motor faces the through hole depending on the mounting position of the stirring motor. The electron with a barbecue function according to claim 1, wherein the position of the support plate corresponding to the first heating pipe is made of a material that transmits light, or the support plate is a light-transmitting material as a whole. range. The microwave oven with a barbecue function according to claim 1, wherein a control circuit module and a frequency conversion power supply module located below the first concave groove are further provided inside the bottom electric room. The microwave oven with a barbecue function according to claim 1, wherein the microwave oven further includes a second heating pipe provided in the upper part of the cooking cavity. The microwave oven with a barbecue function according to claim 9, wherein the first heating pipe and the second heating pipe both have two pipes and are provided in the central portion of the housing.