KR200491836Y1 - microwave range capable of visually showing temperature of cooking space - Google Patents

Abstract

The microwave oven according to the present invention includes a main body provided with a cooking chamber for heating food using a magnetron and a heater generating microwaves; An interfacing unit mounted on the main body and generating a control signal for controlling the operation of the mark netron and the heater; A control unit controlling the magnetron and the heater in response to the control signal; And a transparent or translucent see-through window for viewing the inside of the cooking chamber, and a door for opening and closing the cooking chamber, wherein the color changes in response to heat inside the cooking chamber, but returns to its original state when heat is removed. Using one heat-sensitive color changing sheet, a temperature information providing unit for visually providing variable color information corresponding to the temperature of the cooking compartment is provided.

Description

Microwave range capable of visually showing temperature of cooking space

The present invention relates to a microwave oven, and more particularly, to a microwave oven capable of visually showing the temperature inside the cooking compartment from the outside without opening the door.

In the microwave oven, food is cooked by applying heat to the food in the cooking chamber, and at least two heating devices that can be selectively used according to the cooking method are provided. For example, in the microwave oven, a heater for a grill or the like may be used as a heating device for cooking, in addition to a microwave-generating mark netron.

In a microwave oven, since food is cooked by heat by a heating device, the temperature in the cooking chamber of the microwave oven when cooking food is inevitably high. In addition, even after a certain period of time after the cooking of food is finished, it is inevitable to maintain a high temperature due to residual heat in the cooking chamber. Due to the residual heat of the cooking compartment, the user of the microwave oven may be subjected to a safety accident such as a burn when trying to take out the cooked food. In particular, the risk of safety accidents is inevitably exacerbated for young children with weak attention and lack of caution.

In addition, the food has a temperature suitable for cooking according to the type, and when the user selects the cooked food, the microwave oven or heater is controlled according to a predetermined pattern to end the cooking, so the user operates the microwave to the target food. Therefore, the microwave can not be controlled to maintain the proper temperature.

Accordingly, the technical problem to be solved by the present invention is to provide a microwave oven capable of providing color information capable of intuitively recognizing high and low temperatures, rather than simply displaying the temperature of the cooking compartment.

And another technical problem to be solved by the present invention is to provide a microwave oven capable of providing a list of recommended foods suitable for the temperature of the cooking compartment as well as providing the temperature of the cooking compartment as visual color information.

The technical problems that the present invention intends to achieve are not limited to the above-mentioned technical problems, and other technical problems that are not mentioned will be clearly understood by those having ordinary knowledge in the technical field to which the present invention belongs from the following description. Will be able to.

The microwave oven according to the present invention for solving the above technical problem includes a main body provided with a cooking chamber for heating food using a magnetron and a heater generating microwaves; An interfacing unit mounted on the main body and generating a control signal for controlling the operation of the mark netron and the heater; A control unit controlling the magnetron and the heater in response to the control signal; And a transparent or translucent see-through window to view the inside of the cooking compartment, and may include a door that opens and closes the cooking compartment.

In the viewing window, color is changed in response to heat in the cooking compartment, but when heat is removed, at least one thermally sensitive color changing sheet is restored to visually provide variable color information corresponding to the temperature of the cooking compartment. A temperature information providing unit may be provided.

The at least one heat-sensitive color changing sheet includes a plurality of heat-sensitive color changing sheets, each of which changes to a specific color in response to a specific temperature range, or a color that changes stepwise as the temperature of the cooking chamber changes. It may include a heat-sensitive color change sheet.

The at least one heat-sensitive color changing sheet is mounted outside the viewing window, and the thermal conductivity of a portion in the viewing window where the at least one heat-sensitive color changing sheet is mounted is different from the thermal conductivity of the remaining portion of the viewing window. It can have a structure.

The at least one heat-sensitive color changing sheet is mounted inside the insertion groove formed inside the viewing window, and the insertion groove may have a heat buffering structure that is shielded with a finishing material having a different thermal conductivity from the rest of the viewing window. have.

The response temperature of the at least one thermally sensitive color changing sheet is set in consideration of the heat that is offset according to the thermal conductivity of the thermal buffering structure, and the temperature information providing unit or the viewing window changes color of the at least one thermal feeling It may include a temperature display for providing a temperature inside the cooking chamber corresponding to the color of the sheet as a numerical value.

The temperature display unit may provide a temperature inside the cooking chamber as a numerical value using a heat-sensitive color changing sheet.

The temperature information providing unit or the viewing window may include a recommended food display unit that describes the type of food that matches the temperature in the cooking compartment corresponding to the color of the color change sheet. At this time, the interfacing unit may include interfacing means for generating a temperature maintenance control signal for maintaining a constant temperature inside the cooking compartment, and the controller controls the temperature inside the cooking compartment in response to the temperature maintenance control signal. The magnetron and the heater can be controlled to maintain constant.

The microwave oven according to the present invention can provide color information that can intuitively recognize the high and low temperatures without requiring additional power consumption. Therefore, it is possible to prevent a user from having a safety accident such as a burn by opening the door while the cooking chamber is at a high temperature.

In addition, the microwave oven according to the present invention not only provides the temperature of the cooking room as visual color information, but also provides a list of recommended foods suitable for the temperature of the cooking room, and maintains the temperature of the cooking room at a temperature suitable for food through manipulation of the user's interfacing unit. Can provide the ability to

1 is a perspective view of a microwave oven 100 according to the present invention.
2 is a block diagram showing components electrically connected in the microwave oven 100 according to the present invention.
3 shows an example of the temperature information providing unit 150 of the microwave oven 100 according to the present invention.
4 shows another example of the temperature information providing unit 150 ′ of the microwave oven 100 according to the present invention.
5 shows another example of the temperature information providing unit 150" of the microwave oven 100 according to the present invention.
FIG. 6 is a conceptual view showing the manner in which the heat sensitive color changing sheet 151 of the temperature information providing unit 150 is mounted in the microwave oven 100 according to the present invention.

In order to fully understand the present invention and the operational or functional advantages of the present invention and the objectives achieved by the practice of the present invention, reference should be made to the accompanying drawings and the contents described in the accompanying drawings illustrating preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the invention with reference to the accompanying drawings. The same reference numerals in each drawing may denote the same members.

1 is a perspective view of a microwave oven 100 according to the present invention. 2 is a block diagram showing components electrically connected in the microwave oven 100 according to the present invention. The microwave oven 100 includes a main body 110, an interfacing unit 120, a door 130, a viewing window 140 provided on the door 130, and a temperature information providing unit 150 provided on the viewing window 140. Includes.

On the other hand, since the components of the microwave oven 100 shown in the drawings are not essential, the microwave oven 100 may have more components or less components. This also applies to each component constituting the microwave oven 100.

The microwave oven 100 does not display the temperature of the cooking room as a simple value, but provides color information that can intuitively recognize the high and low temperatures using a heat-sensing color change sheet that does not require a separate power supply. A can provide an effect of preventing a safety accident such as a burn by opening the door while the cooking chamber is at a high temperature. In addition, the microwave oven 100 not only provides the temperature of the cooking room as visual color information, but also provides a list of recommended foods suitable for the temperature of the cooking room, and the user wants to cook the temperature of the cooking room by operating the interfacing unit 120 It can provide a function to maintain a temperature suitable for the food to be said.

The main body 110 forms a most external shape of the microwave oven 100 and is provided with a cooking compartment, which is a space for heating food and beverage, and various components are mounted on the main body 110. For example, various wirings, PCBs, and the like, including the control unit 160, the magnetron 170, and the heater 180, may be embedded in the main body 110 and mounted.

The interfacing unit 120 is mounted on the main body 110 and may generate a control signal to control the operation of the magnetron 170 and the heater 180. The control signal may be an electrical signal generated based on a user manipulation of the manipulation unit 122. In addition, the interfacing unit 120 may include the display unit 121 that displays an operation state of the microwave oven 100. On the other hand, the operation unit 122 may include a physical button, a dial, a touch screen, etc., but the scope of the present invention is not limited to the above-described examples.

The control unit 160 generally controls the operation of the microwave oven 100. For example, the control unit 160 responds to a control signal generated according to the operation of the interfacing unit 120, and the magnetron 170. And it is possible to control the operation of the heater 180. In addition, the control unit 160 may control the display unit 121 to display the operation state of the microwave oven 100.

The door 130 opens and closes the cooking chamber, and the transparent or translucent viewing window 140 is provided on the door 130 so that the inside of the cooking chamber can be seen. Then, in the viewing window 140, color is changed in response to heat in the cooking compartment, but at least one thermally sensitive color changing sheet that is returned to its original shape when heat is removed is used to visually display variable color information corresponding to the temperature of the cooking compartment. The temperature information providing unit 150 provided by is provided. Here, the heat-sensitive color changing sheet may be implemented with a tape or a sticker, but the scope of the present invention is not limited thereto.

The heat-sensitive color changing sheet may include a plurality of heat-sensitive color changing sheets, each of which changes to a specific color in response to a specific temperature range, and one heat-sensitive color change stepwise as the temperature of the cooking chamber changes. It may include a color change sheet.

3 shows an example of the temperature information providing unit 150 of the microwave oven 100 according to the present invention.

The temperature information providing unit 150 includes a color information providing unit 151 including a plurality of heat-sensitive temperature changing sheets, and a temperature display unit 152 that numerically indicates the temperature of the cooking chamber corresponding to the temperature at which the sheets cause color change. , Sheet includes a recommended food display unit 153 that describes the type of food suitable for the temperature of the cooking chamber corresponding to the temperature causing the color change. For reference, FIG. 3 shows that the temperature of the cooking chamber corresponds to 110 degrees, so that the color of the third sheet from the top is changed. In addition, the number of the temperature display unit 152 or the characters of the recommended food display unit 153 may be implemented as a color change sheet.

In order for users to feel hot, it is desirable that the color in which the sheets are changed becomes closer to red as the temperature corresponds to the high temperature inside the cooking compartment. Then, the user does not open the door 130 by feeling that the inside of the cooking chamber is hot, and confirms the color of the sheet visually indicating that the temperature inside the cooking chamber is properly lowered, and then opens the door 130 Food can be taken out. Therefore, the microwave oven 100 according to the present invention can prevent a safety accident such as opening a high-temperature cooking chamber and causing burns.

On the other hand, the user can recognize that the temperature inside the cooking chamber has reached a temperature suitable for the recommended food being cooked by viewing the color-changed sheet. At this time, the user may generate a temperature maintenance control signal for keeping the temperature inside the cooking chamber constant through manipulation of the interfacing unit 120.

Then, the control unit 160 may control the magnetron 170 and the heater 180 to keep the temperature inside the cooking chamber constant for a predetermined time in response to the temperature maintenance control signal. Therefore, the microwave oven 100 according to the present invention can maintain the temperature of the cooking compartment at a temperature suitable for the food being cooked, unlike the conventional microwave oven.

4 shows another example of the temperature information providing unit 150 ′ of the microwave oven 100 according to the present invention.

Unlike the temperature information providing unit 150 of FIG. 3, the temperature information providing unit 150 ′ includes a color information providing unit 151 ′ in which heat-sensitive color changing sheets are disposed in a fan shape, and the temperature display unit 152 ′. ) It was also implemented with color change sheets. In the example of FIG. 4, since the temperature of the cooking compartment corresponds to 110 degrees, it can be seen that the colors of the corresponding sheets are changed in the color information providing unit 151' and the temperature display unit 152'.

5 shows another example of the temperature information providing unit 150" of the microwave oven 100 according to the present invention.

Unlike the temperature information providing unit 150 of FIG. 3, the temperature information providing unit 150″ includes a color information providing unit 151″ implemented as one heat-sensitive color changing sheet that changes stepwise according to the temperature of the cooking compartment. In addition, it includes an index area 154 that displays a color to determine how many degrees the color of the sheet is changed according to the temperature of the cooking chamber. In the example of FIG. 5, the temperature of the cooking compartment corresponds to 110 degrees, and the temperature of the color information providing unit 151" is changed to a predetermined color in response to this. Then, the user changes the color in the index area 154. It can be recognized that the temperature of the cooking chamber is 110 degrees by confirming that it matches the third color from the top.

FIG. 6 is a conceptual diagram showing how the heat-sensitive color changing sheet 151 of the temperature information providing unit 150 is mounted in the microwave oven 100 according to the present invention. For reference, in the conceptual diagram of FIG. 6, a metal mesh, etc. included in the viewing window 140 is omitted for convenience of explanation, and the viewing window 140 is displayed as simply as possible.

6A shows that the heat-sensitive color changing sheet 151 is mounted in a groove provided inside the viewing window 140. Since the heat-sensitive color changing sheet 151 directly responds to heat in the cooking compartment, the heat-sensitive color changing sheet 151 should have a characteristic that the color is changed in response to a high temperature of 100 degrees or more.

6(b), the heat-sensitive color changing sheet 151 is provided in an insertion groove provided inside the viewing window 140, and the insertion groove has a heat buffering structure that is shielded by a finishing material 141. At this time, the finishing material 141 may have a different thermal conductivity from other parts of the viewing window 140.

At this time, the temperature display unit 152 for displaying the temperature information as a numerical value should be set in consideration of the offset heat according to the thermal conductivity of the finishing material 141. For example, it is assumed that the temperature inside the cooking compartment is offset by 50% by the finishing material 141 and the temperature inside the cooking compartment is 100 degrees. Then, the color of the heat-sensitive color changing sheet 151 is actually changed in response to a temperature of 50 degrees, but the temperature display unit should display the temperature of 100 degrees in numerical value in consideration of the offset of the finishing material 141. .

According to the method (b) of FIG. 6, the heat-sensitive color changing sheet 151 is provided inside the viewing window 140, has high durability, and is shown in FIG. 6(a) due to heat offset by the finishing material 141. Compared to the method, it has the advantage of implementing a color information providing unit with sheets that respond to low temperatures.

6( c) shows that the heat-sensitive color changing sheet 151 is mounted in a groove provided outside the viewing window 140. In this case, the heat-sensitive color changing sheet 151 has an advantage of implementing a color information providing unit with sheets that respond to a considerably low temperature range due to the low thermal conductivity of the viewing window 140. However, the accuracy of providing a color corresponding to the internal temperature of the cooking compartment may be lowered.

In the example of FIG. 6(d) to compensate for the disadvantages of the method (c) of FIG. 6, the heat-sensitive color changing sheet 151 is mounted outside the viewing window 140, but in the viewing window 140, It has a thermal buffering structure 142 to increase the thermal conductivity of the portion where the heat-sensitive color changing sheet 151 is mounted. Then, the method of FIG. 6(d) can provide higher accuracy than the method of FIG. 6(c).

Of course, even in this case, as in the example of (b) of FIG. 6, the temperature display unit 152 for displaying temperature information numerically should be set in consideration of the heat canceled out according to the thermal conductivity of the heat buffering structure 142 do. For example, it is assumed that the temperature inside the cooking chamber is 70% offset by the heat buffering structure 142 and the temperature inside the cooking chamber is 100 degrees. Then, the color of the heat-sensitive color changing sheet 151 is actually changed in response to a temperature of 30 degrees, but the temperature display unit should display the temperature of 100 degrees in numerical value in consideration of the offset of the finishing material 141. .

In the above examples, assuming that the thermal conductivity of the finishing material 141 and the thermal buffering structure 142 are the same, the order of the temperature that the thermally sensitive color changing sheet 151 actually responds is shown in FIGS. 6(a) and 6. (B), FIG. 6(d), and FIG. 6(c).

As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited to the above-described embodiments, and various modifications and variations from these descriptions will be made by those skilled in the art to which this invention belongs. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims described below but also by the claims and equivalents.

100: microwave oven 110: body
120: interfacing section 130: door
140: viewing window 150: temperature information providing unit

Claims (6)

The main body is provided with a cooking chamber for heating food using a magnetron and a heater that generates microwaves;
An interfacing unit mounted on the main body and generating a control signal for controlling the operation of the magnetron and the heater;
A control unit controlling the magnetron and the heater in response to the control signal; And
A transparent or translucent viewing window is provided to view the inside of the cooking chamber, and includes a door that opens and closes the cooking chamber,
In the viewing window,
A temperature information providing unit that visually provides variable color information corresponding to the temperature of the cooking compartment by using at least one thermally sensitive color changing sheet that changes color in response to heat in the cooking compartment but returns to its original shape when heat is removed. Prepared,
The at least one heat-sensitive color change sheet,
Each includes a plurality of heat-sensitive color changing sheets that change to a specific color in response to a specific temperature range, or includes one heat-sensitive color changing sheet that changes color stepwise as the temperature of the cooking chamber changes,
The at least one heat-sensitive color change sheet,
It is mounted inside the insertion groove formed inside the viewing window,
The insertion groove,
Has a thermal buffering structure that is shielded with a finishing material having a different thermal conductivity from the rest of the viewing window,
The temperature of the at least one heat-sensitive color change sheet,
It is set in consideration of the offset heat according to the thermal conductivity of the thermal buffering structure,
The control unit,
And controlling the magnetron and the heater to keep the temperature inside the cooking chamber constant for a predetermined time in response to a temperature maintenance control signal generated based on the manipulation to the interfacing unit. delete delete delete delete delete

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