JPH058303U - Microwave oven with heater - Google Patents

Abstract

(57) [Abstract] [Purpose] In a microwave oven with a heater, the heat loss from the door 2 side is reduced, the temperature difference in the heating chamber 11 is reduced, and the microwave oven body is not reduced in size. The outer shape of 1 can be made small, and the lighting display showing that cooking is in progress can be seen from a wide angle range. In a microwave oven with a heater having a door 2 for opening and closing a front surface of a microwave oven main body 1, a half of a rear side of a rotary table 15 from a position near an upper side of the door 2 near a position outside the door 2 is provided. The transparent window 22 having a relatively small area overlooking the above area is provided, and the door 2
In the lower part of the transparent window 22 in FIG.
The operation button 4 for operating the operation button 4 is provided, the operation button 41 of the operation key 4 is formed of a transparent material, and the light source 43 is installed inside the operation button 41.
In addition, the uneven surfaces 47 and 48 that diffusely reflect the light from the light emitting source 43 toward the outside of the door 2 are formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is a microwave oven with a heater such as a microwave oven or a toaster oven. It's about Ji.

[0002]

[Prior art]

  6 and 7 show a conventional general microwave oven with a heater, In this conventional microwave oven with a heater, the opening 1 of the microwave oven main body 101 14 is opened laterally, and the opening 114 can be opened and closed by the door 102. It is like this. In addition, the door 102 has the closed door A see-through window 122 for forming a peep inside the heating chamber 111 is formed. This transparent window 1 22 has an area that is substantially the same as the area of the opening 114 of the microwave oven body 101. is doing. In this way, when the area of the transparent window 122 is increased, the inside of the heating chamber 111 is Although it is possible to see through from a wide angle range, the see-through window 122 portion has a small thickness and heat transmission. Since it is highly transient, the amount of heat released from it increases. Also, the microwave oven body 10 A heater 113 is provided on the ceiling of the first heating chamber 111. In a microwave oven, in addition to high frequency cooking, radiant heat from the heater 113 heats the heating chamber. The object to be heated Y in 111 can be cooked by heating.

[0003]   Furthermore, in the conventional microwave oven with a heater shown in FIG. 6 and FIG. Various cooking menus, "cooking start", "cancel", etc. An operation panel unit 105 is provided in which all operation keys for performing various types of control are aggregated.

[0004]   Also, in this type of conventional microwave oven, there is an indicator lamp on the back side of the operation key part. It is provided so that the indicator lamp of the operation key part lights up while cooking is in progress. Although there is a light, this display looks good when viewed from the front of the operation panel, but It is difficult to see from the side.

[0005]

[Problems to be solved by the device]

  However, in the conventional microwave oven with a heater shown in FIG. 6 and FIG. I had a nasty problem.

[0006] (1) The transparent window 122 provided on the door 102 is the opening 114 of the microwave oven main body 101. Since it has a large opening that is almost the same size as the opening area of At the time of cooking, the amount of heat that escapes from the see-through window 122 to the outside is large, and the heat economy is poor. It was

[0007] (2) Due to the large amount of heat radiated from the transparent window 122 of the door 102, the inside of the heating chamber 111 is In the heating chamber 111, the temperature difference between the entrance side and the back side becomes large, and Due to the temperature difference on the side, uneven cooking is likely to occur.

[0008] (3) All operation keys are attached to the operation panel unit 105 provided on the front surface of the microwave oven main body 101. Since it is arranged, the operation panel section 105 is provided on the front surface of the microwave oven main body 101. Space for the microwave oven main body 10 is required for the volume in the heating chamber 111. The outer shape of 1 becomes large.

[0009] (4) In a microwave oven with an indicator lamp on the back side of the operation key part, Although the operation key part is lit during the line, operation is possible even when the indicator lamp is lit. The lit display may not be visible from the side of the work panel, I mistakenly think that it is finished and accidentally interrupt the cooking process (for example, open the door There was something.

[0010]   In view of the above-mentioned problems of the conventional microwave oven with a heater, the invention of the present application can be applied to the door side. It is possible to reduce the heat loss due to The size of the microwave oven can be made smaller and the outer shape of the microwave oven can be made smaller. We provide a microwave oven with a heater so that the lighting indicator can be seen from a wide angle range. The purpose is to

[0011]

[Means for Solving the Problems]

  According to the first aspect of the present invention, a heater is provided on the ceiling of the heating chamber and the heater is provided on the bottom of the heating chamber. A microwave oven main body provided with a rotary table and an opening / closing portion of the microwave oven main body In a microwave oven with a heater equipped with a door, close to the upper side of the door. A half or more area on the back side of the turntable from a position near the outside of the door. In addition to providing a relatively small area of the see-through window overlooking the The feature is that the lower part of the transparent window has a heat insulating structure.

[0012]   The invention of claim 2 of the present application is the microwave oven with a heater of the invention of claim 1 above. And the operation keys to operate the cooking switch on the part of the door other than the see-through window. The feature is that it is provided.

[0013]   Further, the invention of claim 3 of the present application is a microwave oven with a heater of the invention of claim 2 above. In, the operation button of the operation key is formed of transparent material, and inside the operation button A light source is installed and the light from the light source is placed on the outside of the door on the operation button. It is characterized in that it has an uneven surface for diffuse reflection.

[0014]

[Action]

  According to the invention of claim 1, the transparent window provided on the door is located near the upper side of the door. The area of the door is relatively small, so the area of the door where heat easily escapes The amount of heat loss is reduced when heating and cooking with the heater It The object to be heated is placed on the rotary table in the heating chamber during cooking, but The lower part of the window (the lower part of the transparent window) has a heat insulating structure, The temperature difference between the inlet side and the back side of the heat product installation portion becomes small. The perspective window is above the door From the position near the outer side of the door to the inner side of the rotary table in the heating chamber. It has an area that can overlook more than half the area of the There is no problem in seeing the heated object from the outside by turning it.

[0015]   According to the invention of claim 2 of the present application, the area of the see-through window is reduced to reduce the Operation keys for operating the cooking switch can be provided on parts other than the transparent window. It If the operation keys are provided on the door side in this way, the microwave oven main body side The operation keys may not be provided.

[0016]   Further, according to the invention of claim 3, the operation button of the operation key is formed of a transparent material. In addition, since the uneven surface for irregular reflection is formed on the operation button, The light from the light source installed on the side is diffusely reflected by the uneven surface, It spreads in a wide range of sides.

[0017]

[Effect of device]

  In the microwave oven with a heater according to the present invention, the opening of the see-through window provided in the door The area is reduced to a range that does not hinder the visibility of the heated object in the heating chamber. Because it does not impair the see-through function through the see-through window, it can be used when cooking with a heater. Heat loss from the door portion can be reduced, and thermal economy can be improved. Also the door Since the lower part of the see-through window in the (Where the heat is located), the temperature difference between the inlet side and the back side becomes smaller, and This has the effect of making uneven cooking less likely to occur.

[0018]   Further, in the microwave oven with a heater of the invention of claim 2, the area of the see-through window is reduced. Then, the operation keys for operating the cooking switch are provided on the door except for the transparent window. Therefore, the door can be effectively used for attaching operation keys other than the original purpose. Wear. In addition, if the operation keys are provided on the door side in this way, the operation keys on the microwave oven body side It is possible not to provide a heater, in which case the heating chamber space should be reduced. There is an effect that the main body of the microwave oven can be made small without the need.

[0019]   Further, in the microwave oven with a heater according to the invention of claim 3, the operation key of the operation key is operated. Since the tongue is provided with an irregular surface for irregular reflection, the light source installed inside the operation button Light diffuses in a wide range outside the operation button, and the light is emitted to the outside of the door. It can be seen by people. Therefore, cooking is in progress from a wide area outside the door. There is an effect that it can be confirmed whether or not there is.

[0020]

【Example】

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 3 shows a microwave oven with a heater according to the first embodiment of the present application, and FIGS. Each shows the modification (2nd Example and 3rd Example) of 1st Example.

[0021]   The microwave oven with a heater according to the first embodiment shown in FIGS. 1 to 3 has a lateral opening. A microwave oven body 1 having a heating chamber 11 and an opening 14 of the microwave oven body 1. And a door 2 for opening and closing.

[0022]   In the heating chamber 11 of the microwave oven body 1, the object to be heated Y is separated from the heating by the high frequency. A heater 13 for heating with radiant heat is attached to the. This heater 13 Is provided on the ceiling surface in the heating chamber 11. In addition, at the bottom of the heating chamber 11, the rotation A table 15 is provided.

[0023]   The door 2 is hinged at the lower end of the front surface of the microwave oven body 1 in this embodiment. The upper side is pivotally opened. Also, this In the embodiment, the door 2 is large enough to cover the entire area of the front surface of the microwave oven body 1. It has a size (same size as the outer shape of the front surface of the microwave oven main body 1). In addition, in other embodiments The door 2 can be changed to a side opening type or a bottom opening type. As shown in FIG. 5, for example, 2 has an operation panel section on the front side of the microwave oven main body 1. It can also be applied to those provided, in which case the door 2 covers only the opening of the heating chamber. The size may be adopted.

[0024]   The door 2 has an appropriate thickness (for example, a thickness of 30 mm to 50 mm). Moreover, this The door 2 has a transparent window 22 for looking into the heating chamber 11 from the outside of the door 2. It is provided. The transparent window 22 is provided at a position near the upper side of the door 2 so that the heating chamber The width is almost the same as the width in 11 and about 30-40% of the height of the inlet of the heating chamber 11. It is formed in a horizontally long rectangular shape having a vertical length of degrees. From this perspective window 22 For example, as shown in FIG. 2, when viewed from diagonally above, the back of the turntable 15 can be It has a size that can overlook the area of more than half of the side, and the rotary table 15 By rotating, the whole of the object Y to be cooked in the heating chamber 11 can be overlooked. It is becoming like this. Therefore, even if the transparent window 22 has a relatively small area, Even if there is, there is no way to see the object Y to be cooked in the heating chamber 11 from the outside. There is no problem.

[0025]   A heat insulating structure is provided below the portion of the door 2 where the transparent window 22 is formed. In the first embodiment, the outer wall 24 and the outer wall 24 are provided as a heat insulating structure under the transparent window 22. It has a double wall structure in which a space portion 26 is provided between the inner walls 25. Disconnection at this door 2 The thermal structure part (double wall 24, 25 part) has a considerable height on the bottom side of the heating chamber opening 14. It has an area that can cover the range H.

[0026]   Further, in the upper part of the door 2 where the transparent window 22 is formed, the central portion in the lateral width direction is formed. Is provided with a handle 28 for opening and closing the door.

[0027]   Further, a cooking menu is provided below the portion of the door 2 where the transparent window 22 is formed. Various cooking switches 3 (see FIG. 3) that can be executed or stopped and the respective cooking switches 3 Each operation key 4 for operating respectively is provided. With this cooking switch 3 For example, "finish adjustment", "toast", "thaw", "warm", "cancel", etc. Something for operation is provided.

[0028]   Each operation key 4, 4, ... Is a push plate 41a made of a transparent material as shown in FIG. And a support base 41b supporting the push plate 41a from the back side. Push plate 41a Has a convex lens shape. The support base 41b has elasticity, and the push plate 41a is When pressed, operate the cooking switch 3 installed on the back side of the operation key 4 and press it. When the finger is released from the plate 41a, the operation keys 4 are restored to their original positions. In addition, other In the embodiment, even if the push plate 41a and the support base 41b are integrally formed, Good.

[0029]   After the cooking switch 3 is turned on by the operation key 4, after the setting timer It is turned off (after completion of cooking).

[0030]   A light emitting source (indicator lamp) 43 is installed on the back side of each operation key 4, 4 ... . This display lamp 43 is displayed while the cooking switch 3 is being operated (ON state). (Between) is lit and the light can be seen from the outside through the operation button 41. Growling.

[0031]   The operation button 41 of the operation key 4 is configured to diffusely reflect the light from the display lamp 43. Concave and convex surfaces 47 and 48 are formed. In the embodiment shown in FIG. 3, the support base 4 A relatively rough large uneven surface 47 is formed on the back surface of 1b, while a relatively rough surface 47 is formed on the front surface of the push plate 41a. A fine small uneven surface 48 (texture processing) is formed. Therefore, from the display lamp 43 When the light passes through the operation button 41 portion, the light first becomes large at the large uneven surface 47 portion. It diffuses diffusely and is scattered in a wide angle direction, and then is diffusely reflected by the small uneven surface 48. You can see it in a blurred state from a wide area on the outer surface.

[0032]   In this embodiment, the cooking switch 3 and the operation key 4 are installed on the door 2 in a transparent manner. Although it is provided below the viewing window 22, in other embodiments, the cooking switch 3 and the operation are The key 4 may be provided above the transparent window 22 of the door 2. In that case, the transparent window 2 2 Set the height H (see Fig. 2) of the heat insulation structure at the bottom to It can be raised as much as it becomes (moves upward).

[0033]   In the microwave oven with a heater of the first embodiment shown in FIGS. 1 to 3, the following operation is performed. I have something to do.

[0034]   The transparent window 22 portion of the door 2 has a larger amount of heat escape than the other portions. Since the window 22 is provided only in the relatively small area range near the upper side of the door, The amount of heat loss that escapes from the door 2 to the outside during heating and cooking with the data 13 can be reduced. It

[0035]   Also, since the lower part of the door 2 has a heat insulating structure (double wall structure), it is possible to control the heating. At the time of processing, the temperature difference between the inlet side and the back side of the lower portion in the heating chamber 11 It becomes smaller, and cooking unevenness is less likely to occur between the entrance side and the back side.

[0036]   Since the transparent window 22 of the door 2 is made small, the cooking switch 3 is operated on the door 2. It is possible to secure a space for providing the operation keys 4 to be operated, and to operate the door 2 with the operation keys. 4 can be effectively used for installation. Also, in this way, the operation key 4 2 is provided on the front surface of the microwave oven body 1 as in this embodiment. It is also possible not to provide the panel section), in which case the operation panel section is provided. The outer shape of the microwave oven main body 1 can be made smaller by the amount that does not exist.

[0037]   The operation button 41 of the operation key 4 is formed of a transparent material, and the operation button 41 (push plate 41a, the support 41b) is provided with irregular reflection surfaces 47 and 48, so that The light from the pump 43 is diffusely reflected in a wide angle direction, and a wide range outside the operation button 41 is displayed. Check the lighting state of the indicator lamp 43 from the direction (from the front as well as from the side). You can Therefore, it is possible to determine whether the cooking is continued or finished in a wide range. You can easily check from the location.

[0038]   The second embodiment shown in FIG. 4 shows a modification of the operation key 4 portion shown in FIG. In the embodiment shown in FIG. 4, as the operation button 41, a thin plate-shaped pressing plate 41a and a convex plate are used. It has a support base 41b having a lens-shaped thick portion. Of the thick part of the support 41b A large uneven surface 47 for large irregular reflection is formed on the surface side, and small irregularities are formed on the inner surface side of the push plate 41a. A small uneven surface 48 for reflection is formed. The operation keys 4 shown in FIG. 4 and those shown in FIG. It has the same effect as.

[0039]   In the third embodiment shown in FIG. 5, as the heat insulating structure provided in the lower portion of the door 2, A space between the outer wall 24 and the inner wall 25 is filled with a heat insulating material 29. Like this A. If the lower part of 2 is filled with the heat insulating material 29, the heat retaining power can be further improved. it can.

[Brief description of drawings]

FIG. 1 is a front view of a microwave oven with a heater according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a partial cross-sectional view (corresponding to FIG. 3) of a microwave oven with a heater according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a microwave oven with a heater according to a third embodiment of the present invention.

FIG. 6 is a perspective view of a conventional microwave oven with a heater.

7 is a central vertical cross-sectional view of FIG.

[Explanation of symbols]

1 is a microwave oven main body, 2 is a door, 3 is a cooking switch,
4 is an operation key, 11 is a heating chamber, 13 is a heater, 14 is an opening, 15 is a rotary table, 22 is a see-through window, 29 is a heat insulating material, 41 is an operation button, 43 is a light source (display lamp), 4
Reference numerals 7 and 48 denote uneven surfaces, and Y denotes an object to be heated.

Claims (3)

[Scope of utility model registration request] 1. A microwave oven main body (1) provided with a heater (13) on the ceiling of the heating chamber (11) and a rotary table (15) on the bottom of the heating chamber (11), and the microwave oven main body. A microwave oven with a heater, comprising: a door (2) for opening and closing the opening (14) of (1), which is near the outside of the door (2) at a position closer to the upper side of the door (2). A transparent window (22) having a relatively small area is provided so as to allow a view of a half or more of the rear side of the rotary table (15) from a position, and heat insulation is provided below the transparent window (22) in the door (2). A microwave oven with a heater characterized by having a structure. 2. An electronic device with a heater according to claim 1, wherein an operation key (4) for operating the cooking switch (3) is provided on a portion of the door (2) other than the see-through window (22). range. 3. The operation button (41) of the operation key (4) is formed of a transparent material, and a light emitting source is provided inside the operation button (41).
(43) is installed and the operation button (41) is
The microwave oven with a heater according to claim 2, characterized in that an uneven surface (47, 48) is formed to diffusely reflect the light from the light emitting source (43) toward the outside of the door (2).