JPWO2015129449A1 - Cooker - Google Patents

Abstract

The heating cooker is provided in the casing (1), the casing (1), a heating chamber (2) having an opening (2a) on the front side, and a microwave for supplying microwaves into the heating chamber (2). A wave generator and an open / close door (3) for opening and closing the opening (2a) are provided. The open / close door (3) is disposed on the light emitting unit (304A, 304B) that emits light toward the heating chamber (2), and on the optical path between the light emitting unit (304A, 304B) and the heating chamber (2). A transparent or translucent window member (305), and a microwave shielding unit (306) that is disposed between the light emitting units (304A, 304B) and the window member (305) and shields microwaves from the heating chamber (2) side. ).

Description

  The present invention relates to a cooking device.

  Conventionally, as a cooking device, there is one disclosed in Japanese Patent Laid-Open No. 2003-139336 (Patent Document 1). This cooking device includes an opening / closing door that opens and closes an opening of a heating chamber.

  A heat-resistant glass is attached to the surface of the open / close door on the heating chamber side (hereinafter referred to as “rear surface”). This heat-resistant glass is transparent so that the user can look inside the heating chamber.

  Further, a through hole located on the upper side of the heat resistant glass and a through hole located on the lower side of the heat resistant glass are provided on the rear surface of the open / close door. Each of these through holes faces an LED (light emitting diode) in the open / close door.

  That is, in the said conventional cooking device, the light of LED in an opening-and-closing door can enter the heating chamber through a through-hole.

Japanese Patent Laying-Open No. 2003-139336 (FIG. 5)

  However, in the conventional cooking device, since a through hole is provided on the rear surface of the open / close door, there arises a problem that steam in the heating chamber leaks from the through hole.

  This problem can be solved by covering the through hole with glass or the like, but it causes another problem of an increase in manufacturing cost.

  Then, the subject of this invention is providing the heating cooker which can prevent the vapor | steam in a heating chamber from leaking out of a heating chamber, and can suppress a raise of manufacturing cost in addition.

In order to solve the above problems, the heating cooker of the present invention is:
A casing,
A heating chamber provided in the casing and having an opening on the front side;
A microwave generator for supplying microwaves into the heating chamber;
An opening and closing door for opening and closing the opening,
The opening and closing door
A light emitting unit that emits light toward the inside of the heating chamber;
A transparent or translucent window member disposed on the optical path between the light emitting unit and the heating chamber;
It has the microwave shielding part which is arrange | positioned between the said light emission part and the said window member, and shields the microwave from the said heating chamber side, It is characterized by the above-mentioned.

In the heating cooker of one embodiment,
The opening / closing door includes a display unit and a cooling fan that cools the light emitting unit and the display unit.

In the heating cooker of one embodiment,
The air blown out by the cooling fan passes between the display unit and the light emitting unit.

In the heating cooker of one embodiment,
The light emitting unit includes a first light emitting unit for illuminating the inside of the heating chamber when the door is opened, and a second light emitting unit for illuminating the inside of the heating chamber when the door is closed. Have

In the heating cooker of one embodiment,
A control device for controlling the first and second light emitting units;
When the opening / closing door is opened, the control device turns on the first light emitting unit and turns off the second light emitting unit.

In the heating cooker of one embodiment,
The first light emitting unit is positioned closer to the heating chamber than the second light emitting unit when the open / close door is opened.

  According to the heating cooker of the present invention, the open / close door has a transparent or semi-transparent window member disposed on the optical path between the light emitting unit and the heating chamber, so that, for example, the opening / closing door penetrates the heating chamber side portion. Even if it does not provide a hole, the light of a light emission part can be put in a heating chamber. Therefore, it is possible to prevent the steam in the heating chamber from leaking out of the heating chamber, and to suppress an increase in manufacturing cost.

  Moreover, since the said opening / closing door has a microwave shielding part which is arrange | positioned between a light emission part and a window member, and shields the microwave from a heating chamber side, it prevents that a light emission part is heated with a microwave and fails. be able to.

FIG. 1 is a schematic front view of a heating cooker according to a first embodiment of the present invention. FIG. 2 is a schematic front view of another state of the heating cooker. 3 is a schematic cross-sectional view taken along the line II-II in FIG. FIG. 4 is a schematic diagram of the second LED and its peripheral part. FIG. 5 is a schematic diagram of the first LED and its peripheral part. FIG. 6 is a control block diagram of the cooking device. FIG. 7 is a schematic diagram for explaining a heating cooker according to a second embodiment of the present invention. FIG. 8 is a schematic front view of a heating cooker according to the fourth embodiment of the present invention. FIG. 9 is a schematic front view of a heating cooker according to the fifth embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of a cooking device according to a sixth embodiment of the present invention. FIG. 11 is a schematic front view of a heating cooker according to a seventh embodiment of the present invention.

  Hereinafter, the cooking device of this invention is demonstrated in detail by embodiment of illustration.

[First Embodiment]
FIG. 1 is a schematic front view of a heating cooker according to a first embodiment of the present invention, in which a door 3 is closed. FIG. 2 is a schematic front view of the cooking device with the door 3 opened.

As shown in FIGS. 1 and 2, the heating cooker includes a rectangular parallelepiped casing 1, a heating chamber 2 provided in the casing 1 and having an opening 2 a on the front side, and an opening of the heating chamber 2. The door 3 which opens and closes 2a and the magnetron 4 which supplies a microwave in the heating chamber 2 are provided.
The door 3 is an example of an open / close door. The magnetron 4 is an example of a microwave generator.

  An exhaust duct 5 is provided at the rear of the upper surface of the casing 1. A dew receptacle 6 is detachably attached to the lower part of the casing 1. The dew receptacle 6 is located below the door 3 and can receive water droplets from the rear surface of the door 3 (surface on the heating chamber 2 side).

  The lower end of the door 3 is attached to the front surface of the casing 1 so as to be rotatable. This door 3 is arrange | positioned at the front side (opposite side to the heating chamber 2), and has the transparent outer glass 7 which has heat resistance. Furthermore, the door 3 has a handle 8 positioned above the outer glass 7 and an operation panel 9 provided on the right side of the outer glass 7.

  The operation panel 9 includes a color liquid crystal display unit 10 as an example of a display unit, and a button group 11. The button group 11 includes a cancel key 12 that is pressed when heating is stopped halfway, and a start key 13 that is pressed when heating is started. The operation panel 9 is provided with an infrared light receiving unit 14 for receiving infrared light from a smartphone or the like.

  FIG. 3 is a schematic cross-sectional view taken along line II-II in FIG.

  The door 3 includes a door body 301, an inner frame 302, a cover member 303, first and second LEDs 304A and 304B as an example of first and second light emitting units, and an inner glass 305 as an example of a window member. A punching metal plate 306 as an example of the microwave shielding part and a cooling fan 307 are provided.

  The door body 301 is made of heat-resistant resin and serves as an outer frame that surrounds the inner frame 302. An air inlet 301a is provided in the lower part of the door body 301, and a cooling fan 307 is opposed to the air inlet 301a. On the other hand, an exhaust port 301 b is provided above the door body 301 so as to be positioned above the color liquid crystal display unit 10. The exhaust port 301b is hidden by the handle 8 when viewed from the front side when the door 3 is closed.

  A choke structure 302 a for preventing microwave leakage is provided on the outer peripheral edge of the inner frame 302. The choke structure 302 a has a clearance between the inner peripheral edge of the inner frame 302. On the other hand, the outer peripheral edge of the inner glass 305 is fixed to the inner peripheral edge of the inner frame 302 with an adhesive, and the inner space of the inner frame 302 is closed with the inner glass 305. As this adhesive, an adhesive having heat resistance and sealing properties is used. Thus, water vapor or the like in the heating chamber 102 does not enter the door 3 through between the inner peripheral edge of the inner frame 302 and the outer peripheral edge of the inner glass 305.

  A packing 311 is attached to the inner peripheral edge of the cover member 303. When the cover member 303 is attached to the door body 301, the packing 311 enters the clearance together with the inner peripheral edge of the cover member 303. The packing 311 is in close contact with the peripheral edge of the opening 2 a of the heating chamber 2 when the door 3 is closed. As a result, the space between the front surface of the casing 1 (the surface on the door 3 side) and the rear surface of the door 3 (the surface on the heating chamber 2 side) is sealed, so that water vapor or the like in the heating chamber 102 does not leak from there. ing.

  The first and second LEDs 304 </ b> A and 304 </ b> B emit light toward the inside of the heating chamber 2. The first and second LEDs 304A and 304B are fixed to the LED substrate 308 so that their optical axes are substantially parallel to the horizontal direction when the door 3 is closed. Moreover, 1st LED304A is located in the heating chamber 2 side rather than 2nd LED304B, when the door 3 is open | released. In other words, when the door 3 is opened, the first LED 304A is located closer to the heating chamber 2 than the second LED 304B.

  The first LED 304A is an LED for illuminating the inside of the heating chamber 2 when the door 3 is opened. That is, if the first LED 304A is turned on when the door 3 is closed, the emitted light from the first LED 304A travels in the direction of arrow A. Here, the direction of the arrow A is a direction inclined by 45 degrees with respect to the horizontal direction, for example, and is directed obliquely downward.

  The second LED 304B is an LED for illuminating the inside of the heating chamber 2 when the door 3 is closed. That is, when the second LED 304B is turned on when the door 3 is closed, the light emitted from the second LED 304B travels in the arrow B direction. Here, the arrow B direction is a direction parallel or substantially parallel to the horizontal direction.

  Between the LED substrate 308 and the outer glass 7, a first operation display substrate 309A is disposed. The first operation display substrate 309 </ b> A exchanges signals with the color liquid crystal display unit 10. Further, a second operation display substrate 309B is disposed below the first operation display substrate 309A. The second operation display board 309B receives a signal from the cancel key 12 and a signal from the start key 13.

  The inner glass 305 is disposed on the optical path between the first and second LEDs 304A and 304B and the heating chamber 2, and is made of transparent glass having heat resistance. Further, when the door 3 is closed, the inner glass 305 faces the heating chamber 2.

  The punching metal plate 306 is disposed between the first and second LEDs 304A and 304B and the inner glass 305, and shields microwaves from the heating chamber 2 side. As shown in FIGS. 4 and 5, the punching metal plate 306 has a plurality of openings 306a. Each opening 306a is connected to a cylindrical burring portion 306b extending toward the first and second LEDs 304A and 304B. Among the plurality of openings 306a, the opening 306a in the vicinity of the first LED 304B is provided so that the height is substantially the same as that of the first LED 304B when the door 3 is closed. Of the plurality of openings 306a, the opening 306a in the vicinity of the second LED 304A is provided so that the height is lower than that of the second LED 304A when the door 3 is closed. In FIG. 3, the opening 306a and the burring portion 306b are not shown.

The inner diameter d (mm) of the burring portion 306b, the axial length t (mm) of the through hole of the punching metal plate 306, and the attenuation amount S (dB) of the microwave from the heating chamber 2 are as follows: Satisfies the relational expression. The axial length t of the through hole corresponds to the total length of the punched metal plate 306 and the axial length of the burring portion 306b.
S = 32t / d

  If the output of the magnetron 4 is 500 W and the standard of radio wave leakage is 5 mW, the required attenuation S is 10 · log (500 / 0.005) = 50 dB. Therefore, from the above relational expression, when the ratio of the inner diameter d to the axial length t of the through hole is 0.64 (= 32/50) or less, the standard of radio wave leakage for the magnetron 6 with an output of 500 W or less is set. Can be satisfied.

Further, if the output of the magnetron 4 is 1000 W and the standard of radio wave leakage is 5 mW, the required attenuation amount S is 10 · log (1000 / 0.005) = 53 dB. Therefore, from the above relational expression, when the ratio of the inner diameter d to the axial length t of the through hole is 0.60 (= 32/53) or less, the standard of radio wave leakage for the magnetron 6 with an output of 1000 W or less is set. Can be satisfied.

  The cooling fan 307 cools the first and second LEDs 304A and 304B and the color liquid crystal display unit 10 as shown in FIG. The air blown out by the cooling fan 307 passes between the color liquid crystal display unit 10 and the first and second LEDs 304A and 304B. More specifically, when the cooling fan 307 is driven, the air outside the door 3 enters the door 3 through the intake port 301a and flows through the door 3 as indicated by arrows C1 to C4, and then from the exhaust port 301b. Go out door 3. At this time, part of the air from the cooling fan 307 flows between the LED substrate 308 and the punching metal plate 306 and also flows between the LED substrate 308 and the first operation display substrate 309A. That is, a part of the air flows so as to sandwich the LED substrate 308 in the thickness direction of the door 3. Further, another part of the air from the cooling fan 307 flows between the color liquid crystal display unit 10 and the first operation display substrate 309A. Further, another part of the air from the cooling fan 307 flows between the punching metal plate 306 and the inner glass 305.

  FIG. 6 is a control block diagram of the cooking device.

  The cooking device includes a control device 100 including a microcomputer and an input / output circuit in the door 3 (shown in FIGS. 1 to 3). The control device 100 is connected to the magnetron 4, the operation panel 9, the feed water pump 15, the saturated steam generator 16, the superheated steam generator heater 17, the door open / closed state detector 18, the first LED 304A, the second LED 304B, and the like. The control device 100 includes a magnetron 4, an operation panel 9, a feed water pump 15, a saturated steam generator 16, a superheated steam generator heater 17, and a first LED 304A based on signals from the operation panel 9, the door open / closed state detection unit 18, and the like. The second LED 304B and the like are controlled. For example, when the door 3 is closed, the control device 100 turns off the first LED 304A and turns on the second LED 304B. Then, when the door 3 is opened, the control device 100 turns on the first LED 304A and turns off the second LED 304B. The timing for turning on the first LED 304A and turning off the second LED 304B may be, for example, immediately after the door 3 is released from being closed, or may be when the door 3 is half-opened. That is, the timing may be any time as long as it is immediately after the door 3 is released from being closed until the door 3 is completely opened.

  The water supply pump 15 sucks water in a water supply tank 19 (shown in FIG. 1) and sends the water to the saturated water vapor generator 16. The saturated steam generator 16 heats water from the feed water pump 15 to make saturated steam and supplies it to the heating chamber 102 or supplies it to the superheated steam generator heater 17. By supplying saturated steam from the saturated steam generator 16 to the superheated steam generation heater 17, the saturated steam can be superheated into superheated steam and supplied into the heating chamber 102. Here, the said superheated steam means the steam heated to the overheated state of 100 degreeC or more.

  The door open / closed state detection unit 18 detects a state in which the door 3 is completely opened, a state in which the door 3 is incompletely opened, and a state in which the door 3 is closed. The door open / closed state detection unit 18 includes, for example, a plurality of push buttons, an encoder, and the like. Here, the state in which the door 3 is incompletely opened is, for example, a half-open state, and a state between a state in which the door 3 is completely opened and a state in which the door 3 is closed. Point to.

  According to the cooking device configured as described above, since the transparent inner glass 305 is disposed on the optical path between the first and second LEDs 304A and 304B and the heating chamber 2, the light from the first and second LEDs 304A and 304B. Enters the heating chamber 2 through the inner glass 305. Therefore, the light of the first and second LEDs 304 </ b> A and 304 </ b> B can be put into the heating chamber 2 without providing, for example, a through hole on the rear surface of the door 3. As a result, it is possible to prevent the steam in the heating chamber 2 from leaking out of the heating chamber 2, and to suppress an increase in manufacturing cost.

  Further, a punching metal plate 306 that shields microwaves from the heating chamber 2 side is disposed between the first and second LEDs 304A and 304B and the inner glass 305. Thereby, it can prevent that 1st, 2nd LED304A, 304B is heated with a microwave and fails.

  Further, the door 3 includes the color liquid crystal display unit 10, the first and second LEDs 304A and 304B, and the cooling fan 307 for cooling the color liquid crystal display unit 10, and therefore the first and second LEDs 304A and 304B and the color liquid crystal display. It is possible to prevent the unit 10 from being damaged by the heat from the heating chamber 2.

  Further, since the air blown out by the cooling fan 307 passes between the color liquid crystal display unit 10 and the first and second LEDs 304A and 304B, the color liquid crystal display unit 10 and the first and second LEDs 304A and 304B are effectively cooled. be able to.

  Further, when the cooling fan 307 is driven, air flows between the LED substrate 308 and the punching metal plate 306, and air also flows between the punching metal plate 306 and the inner glass 305. In other words, a double air curtain is formed between the first and second LEDs 304A and 304B and the heating chamber 2. As a result, the first and second LEDs 304A and 304B are positioned so as to overlap the heating chamber 2 in the front-rear direction, but the heat of the heating chamber 2 is hardly transmitted to the first and second LEDs 304A and 304B. Therefore, the cooking device can prevent the first and second LEDs 304A and 304B from being thermally damaged very effectively.

  The first LED 304 is for illuminating the inside of the heating chamber 2 when the door 3 is opened, while the second LED 304B is for illuminating the inside of the heating chamber 2 when the door 3 is closed. is there. Thereby, even if the door 3 is opened or closed, the inside of the heating chamber 2 can be illuminated.

  When the door 3 is opened, the first LED 304A is turned on, while the second LED 304B is turned off. Thereby, the power consumption at the time of the illumination in the heating chamber 2 becomes low.

  Moreover, since the said 1st LED304A is located in the heating chamber 2 side rather than 2nd LED304B, when the door 3 is open | released, the inside of the heating chamber 2 can be illuminated effectively.

  In the said 1st Embodiment, although the illumination in the heating chamber 2 was performed by 1st, 2nd LED304A, 304B, you may perform by organic EL (electroluminescence), a halogen lamp, etc., for example.

  In the first embodiment, the heating cooker includes the magnetron 4, but may not include the magnetron 4. In this case, the punching metal plate 306 does not have to be disposed between the first and second LEDs 304A and 304B and the inner glass 305.

  In the first embodiment, when the door 3 is closed, the opening 306a in the vicinity of the second LED 304A is lower than the second LED 304A. However, the height may be substantially the same as that of the second LED 304A. .

  In the first embodiment, when the door 3 is opened, the control device 100 turns on the first LED 304A and turns off the second LED 304B, but turns off both the first and second LEDs 304A and 304B. Also good.

  In the first embodiment, the cooling fan 307 may be driven at least during heating.

  In the first embodiment, the shape of the through hole of the punching metal plate 306 may be any shape such as a circle, a rectangle, and an ellipse.

[Second Embodiment]
The heating cooker according to the second embodiment of the present invention is configured such that the optical axis of the first LED 304A is inclined in the horizontal direction when the door 3 is opened, and the first LED 304A passes through the heating chamber 2 when the door 3 is opened. Only the point which makes it illuminate effectively differs from the said 1st Embodiment.

[Third Embodiment]
The heating cooker according to the third embodiment of the present invention is different from the first embodiment only in that a translucent inner glass is provided instead of the transparent inner glass 305.

[Fourth Embodiment]
FIG. 8 is a schematic front view of the heating cooker according to the fourth embodiment of the present invention with the door 3 closed. 8, the same reference numerals as those in FIG. 1 are assigned to the same components as those in FIG. In the following description, the same reference numerals as those of the first embodiment are attached to the same components as those of the first embodiment.

  The heating cooker differs from the first embodiment in the positions of the first and second LEDs 304A and 304B. More specifically, the first and second LEDs 304 </ b> A and 304 </ b> B are disposed between the heating chamber 2 and the color liquid crystal display unit 10. That is, the first and second LEDs 304 </ b> A and 304 </ b> B overlap the heating chamber 2 and the color liquid crystal display unit 10 in the thickness direction of the door 3.

  Although not shown, a cooling air passage through which the air blown from the cooling fan 307 flows is provided in the door 3 by, for example, ribs. The width of the cooling air passage in the left-right direction (the direction substantially parallel to the rotation axis of the door 3) is substantially the same as the width of the color liquid crystal display unit 10 in the left-right direction. In addition, the cooling air path overlaps substantially the entire color liquid crystal display unit 10 in the thickness direction of the door 3.

  According to the cooking device configured as described above, when the cooling fan 307 is driven, part of the air from the cooling fan 307 flows between the color liquid crystal display unit 10 and the first operation display substrate 309A. At this time, the cooling air passage has a width in the left-right direction that is substantially the same as a width in the left-right direction of the color liquid crystal display unit 10 and overlaps substantially all of the color liquid crystal display unit 10 in the thickness direction of the door 3. As a result, air does not flow to a place where no cooling is required, and cooling by the cooling fan 307 can be performed efficiently.

  Further, when the cooling fan 307 is driven, air flows between the LED substrate 308 and the punching metal plate 306, and air also flows between the punching metal plate 306 and the inner glass 305. In other words, a double air curtain is formed between the first and second LEDs 304A and 304B and the heating chamber 2. As a result, the first and second LEDs 304A and 304B are positioned so as to overlap the heating chamber 2 in the front-rear direction, but the heat of the heating chamber 2 is hardly transmitted to the first and second LEDs 304A and 304B. Therefore, the cooking device can prevent the first and second LEDs 304A and 304B from being thermally damaged very effectively.

  In the fourth embodiment, the cooling air passage overlaps substantially the entire color liquid crystal display unit 10 in the thickness direction of the door 3, but may be provided only between the heating chamber 2 and the color liquid crystal display unit 10. Good. That is, the cooling air passage may be configured to cool at least a region overlapping with the heating chamber 2 in the thickness direction of the door 3.

[Fifth Embodiment]
FIG. 9 is a schematic front view of a heating cooker according to a fifth embodiment of the present invention in which the door 3 is closed. 9, the same reference numerals as those in FIG. 1 denote the same parts as those in FIG.

  The heating cooker differs from the first embodiment in the position of the cooling fan 307. More specifically, the cooling fan 307 is more dependent on the central portion side of the door 3 than in the first embodiment. The air blown from the cooling fan 307 flows toward the right side and then bends upward to cool the first and second LEDs 304A and 304B and the color liquid crystal display unit 10.

  According to the cooking device configured as described above, since the cooling fan 307 is not provided below the color liquid crystal display unit 10, other electrical parts can be disposed below the color liquid crystal display unit 10.

  Examples of the cooking device according to the present invention include not only an oven range using superheated steam but also an oven using superheated steam, an oven range not using superheated steam, and an oven not using superheated steam.

[Sixth Embodiment]
FIG. 10 is a schematic cross-sectional view of a heating cooker according to the sixth embodiment of the present invention. This schematic cross-sectional view corresponds to a horizontal cross-sectional view at the position of the first LED 304A in FIG. 10, the same reference numerals as those in FIG. 1 are assigned to the same components as those in FIG.

  In the cooking device of the first embodiment, the punching metal 306 having a horizontal cross-section shape is accommodated in the door 3, but the cooking device of the sixth embodiment has a circular cross-section shape of a circle. An arc-shaped punching metal 1306 is accommodated in the door 3. The punching metal 1306 includes not only punching but also cylindrical burring (not shown) extending toward the first and second LEDs 304A and 304B (second LED 304B not shown) as described in the first embodiment. In addition, the LED substrate 308 is disposed obliquely so as to face the center of the heating chamber. However, as in the prior art, the LED substrate 308 may be disposed substantially parallel to the color liquid crystal display unit 10 and only the first and second LEDs 304A and 304B may be disposed toward the center of the heating chamber.

  Thus, the axial direction of the cylindrical burring extends in the direction toward the center of the heating chamber 2, and the object to be heated accommodated in the heating chamber 2 is irradiated with the light from the first and second LEDs 304A and 304B. It becomes easy. By irradiating the object to be heated from the near side of the object to be heated, the visibility when looking into the inside of the heating chamber 2 from the outer glass 7 can be improved. In particular, in the case where the position of the LED 304A is arranged above the center of the heating chamber, it is possible to irradiate the front and top of the heated object, and the visibility can be further improved. When the heater for heating the heating chamber 2 is arranged at the upper part of the heating chamber 2, or when the circulation fan and the circulation heater are arranged on the back side of the heating chamber 2, the upper surface of the object to be heated is arranged. It is possible to make it easier to visually recognize the generated burnt eyes.

[Seventh Embodiment]
FIG. 11: is a schematic cross section of the heating cooker of 7th Embodiment of this invention. This schematic cross-sectional view corresponds to a horizontal cross-sectional view at the position of the first LED 304A in FIG. In FIG. 11, the same reference numerals as those in FIG. 1 denote the same parts as those in FIG.

  In the cooking device of the seventh embodiment, an inclined portion 2310 is provided in a part of the punching metal 2306 and accommodated in the door 3. The punching metal 2306 is provided with a cylindrical burring (not shown) extending toward the first and second LEDs 304A and 304B (the second LED 304B is not shown) as described in the first embodiment, in addition to punching. In addition, the LED substrate 308 is disposed obliquely so as to face the center of the heating chamber. However, as in the prior art, the LED substrate 308 may be disposed substantially parallel to the color liquid crystal display unit 10, and only the first and second LEDs 304A and 304B may be disposed toward the center of the heating chamber.

  Thus, the axial direction of the cylindrical burring extends in the direction toward the center of the heating chamber 2, and the light to be heated from the first and second LEDs 304 </ b> A and 304 </ b> B is irradiated to the object to be heated. It becomes easy. By irradiating the object to be heated from the near side of the object to be heated, the visibility when looking into the inside of the heating chamber 2 from the outer glass 7 can be improved. In particular, in the case where the position of the LED 304A is arranged above the center of the heating chamber, it is possible to irradiate the front and top of the heated object, and the visibility can be further improved. When the heater for heating the heating chamber 2 is arranged at the upper part of the heating chamber 2, or when the circulation fan and the circulation heater are arranged on the back side of the heating chamber 2, the upper surface of the object to be heated is arranged. It is possible to make it easier to visually recognize the generated burnt eyes.

  The heating cooker of this invention can maintain the low oxygen state in a heating chamber by the structure of the said 1st-3rd embodiment, when the inside of a heating chamber is made into a low oxygen state. Here, the low oxygen state refers to a state in which the volume% of oxygen is 10% or less (for example, 1.0 to 0.5%) in the heating chamber.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, a combination of the contents described in the first to seventh embodiments as appropriate may be an embodiment of the present invention.

  That is, the present invention and the embodiment are summarized as follows.

The cooking device of this invention is
Casing 1;
A heating chamber 2 provided in the casing 1 and having an opening on the front side;
A microwave generator 4 for supplying microwaves into the heating chamber 2;
An opening / closing door 3 for opening and closing the opening,
The door 3 is
Light emitting units 304A and 304B that emit light toward the heating chamber 2,
A transparent or translucent window member 305 disposed on the optical path between the light emitting units 304A, 304B and the heating chamber 2,
It is characterized by having microwave shielding portions 306, 1306, and 2306 that are disposed between the light emitting portions 304A and 304B and the window member 305 and shield microwaves from the heating chamber 2 side.

  According to the above configuration, since the transparent or translucent window member 305 is disposed on the optical path between the light emitting units 304A and 304B and the heating chamber 2, the light from the light emitting units 304A and 304B is transmitted to the window member 305. It enters in the heating chamber 2 via. Therefore, the opening / closing door 3 does not have to be provided with, for example, a punching hole for allowing the light from the light emitting units 304A and 304B to enter the heating chamber 2. As a result, it is possible to prevent the steam in the heating chamber 2 from leaking out of the heating chamber 2, and to suppress an increase in manufacturing cost.

  Further, between the light emitting units 304A and 304B and the window member 305, microwave shielding units 306, 1306, and 2306 that shield microwaves from the heating chamber 2 side are disposed. Thereby, it can prevent that the said light emission parts 304A and 304B are heated with a microwave, and fail.

In the heating cooker of one embodiment,
The open / close door 3 includes a display unit 10 and a cooling fan 307 that cools the light emitting units 304 </ b> A and 304 </ b> B and the display unit 10.

  According to the embodiment, the opening / closing door 3 includes the display unit 10 and the light emitting units 304A and 304B and the cooling fan 307 that cools the display unit 10, so that the light emitting units 304A and 304B and the display unit 10 are heated. It is possible to prevent failure due to heat from the storage 2.

In the heating cooker of one embodiment,
The air blown out by the cooling fan 307 passes between the display unit 10 and the light emitting units 304A and 304B.

  According to the embodiment, since the air from the cooling fan 307 passes between the display unit 10 and the light emitting units 304A and 304B, the display unit 10 and the light emitting units 304A and 304B can be effectively cooled. it can.

In the heating cooker of one embodiment,
The light emitting units 304A and 304B include a first light emitting unit 304A for illuminating the inside of the heating chamber 2 when the door 3 is opened, and the inside of the heating chamber 2 when the door 3 is closed. And a second light emitting unit 304B for illuminating.

  According to the embodiment, the first light emitting unit 304A is for illuminating the inside of the heating chamber 2 when the open / close door 3 is opened, while the second light emitting unit 304B has the open / close door 3 closed. It is for illuminating the inside of the heating chamber 2 when it hits. Thereby, even if the said opening-and-closing door 3 is opened or closed, the inside of the heating chamber 2 can be illuminated.

In the heating cooker of one embodiment,
A control device for controlling the first and second light emitting units 304A and 304B;
When the door 3 is opened, the control device turns on the first light emitting unit 304A and turns off the second light emitting unit 304B.

  According to the embodiment, when the open / close door 3 is opened, the first light emitting unit 304A is turned on while the second light emitting unit 304B is turned off. Thereby, the power consumption at the time of the illumination in the said heating chamber 2 becomes low.

In the heating cooker of one embodiment,
The first light emitting units 304A and 304B are located closer to the heating chamber 2 than the second light emitting unit 304B when the open / close door 3 is opened.

  According to the embodiment, the first light emitting units 304A and 304B are located closer to the heating chamber 2 than the second light emitting unit 304B when the open / close door 3 is opened. Can illuminate.

DESCRIPTION OF SYMBOLS 1 Casing 2 Heating chamber 2a Opening part 3 Door 4 Magnetron 7 Outer glass 8 Handle 9 Operation panel 10 Color liquid crystal display part 11 Button group 14 Infrared light-receiving part 100 Controller 301 Door main body 302 Inner frame 303 Cover member 304A 1st LED
304B Second LED
305 Inner glass 306, 1306, 2306 Punched metal plate 307 Cooling fan 308 LED substrate 309A First operation display substrate 309B Second operation display substrate

In order to solve the above problems, the heating cooker of the present invention is:
A casing,
A heating chamber provided in the casing and having an opening on the front side;
A microwave generator for supplying microwaves into the heating chamber;
An opening and closing door for opening and closing the opening,
The opening and closing door
A light emitting unit that emits light toward the inside of the heating chamber;
A transparent or translucent window member disposed on the optical path between the light emitting unit and the heating chamber;
Disposed between the light emitting portion and the window member, have a microwave shielding section for shielding microwaves from the heating chamber side,
The light emitting unit includes a first light emitting unit for illuminating the inside of the heating chamber when the door is opened, and a second light emitting unit for illuminating the inside of the heating chamber when the door is closed. Have
The microwave shielding portion has a first opening facing the first light emitting portion, and a second opening facing the second light emitting portion,
The first opening is provided such that a height when the door is closed is lower than the first light emitting unit,
It said second opening is characterized by the height at the time of closing of the door is characterized that you have provided so as to be substantially the same as the second light-emitting portion.

Claims (6)

A casing (1);
A heating chamber (2) provided in the casing (1) and having an opening on the front side;
A microwave generator (4) for supplying microwaves to the heating chamber (2);
An open / close door (3) for opening and closing the opening,
The open / close door (3)
A light emitting section (304A, 304B) that emits light toward the heating chamber (2);
A transparent or translucent window member (305) disposed on the optical path between the light emitting section (304A, 304B) and the heating chamber (2);
It has a microwave shielding part (306, 1306, 2306) which is arranged between the light emitting part (304A, 304B) and the window member (305) and shields the microwave from the heating chamber (2) side. A cooking device characterized by that. The heating cooker according to claim 1, wherein
The open / close door (3) includes a display unit (10) and a cooling fan (307) for cooling the light emitting units (304A, 304B) and the display unit (10). The cooking device according to claim 2,
The heating cooker characterized in that the air blown out by the cooling fan (307) passes between the display unit (10) and the light emitting unit (304A, 304B). In the heating cooker according to any one of claims 1 to 3,
The light emitting unit (304A, 304B) includes a first light emitting unit (304A) for illuminating the inside of the heating chamber (2) when the door (3) is opened, and the door (3) is closed. And a second light-emitting unit (304A) for illuminating the inside of the heating chamber (2) when being heated. The cooking device according to claim 4, wherein
A control device for controlling the first and second light emitting units (304A, 304B);
When the opening / closing door (3) is opened, the control device turns on the first light emitting unit (304A) and turns off the second light emitting unit (304B). vessel. In the heating cooker according to claim 4 or 5,
The first light emitting unit (304A) is located closer to the heating chamber (2) than the second light emitting unit (304B) when the open / close door (3) is opened. .

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