JP2017003150A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform lighting (flickering) of an LED lighting part in a heating chamber in association with the contents to be displayed on a liquid crystal of a display part during an operation of a demonstration mode.SOLUTION: A heating cooker includes: a heating chamber 28 for putting in and heating a heating object; heating means for heating the heating object; an openable/closable door 2 which is located at a heating chamber opening part of the heating chamber, and in which a glass window 3 having a mechanism for preventing leakage of electric wave is provided; a lighting unit 500 having an LED lighting part 400 for illuminating the heating chamber 28; input means 71 having an operation part 6 for selecting the heating means and inputting a heating condition and a display part 5 for displaying the contents inputted from the operation part 6 and a progress state of cooking; and control means 151 for controlling the heating means, the LED lighting part 400 and the display part 5 in response to the input from the input means 71. When input is performed by the input means 71 for shifting to a demonstration mode, the control means 151 displays specific contents on the display part 5, and controls lighting of the LED lighting part 400 in association with the display.SELECTED DRAWING: Figure 22

Description

  The present invention relates to a cooking device that performs a demo mode at a store.

  In recent cooking devices, the color liquid crystal display unit arranged near the button to be operated is controlled and displayed so as to be higher than the brightness in the normal mode in the demonstration mode at the store, and is advertised. Have been described.

JP 2011-38650 A

  In the heating cooker shown by patent document 1, there exists a thing which makes a display part shine in order to attract a customer's attention in a store. However, since a store is brighter than a general house, there is a problem that a person visiting the store does not notice the display of a small liquid crystal display unit.

The present invention has been made to solve the above-described problems, and includes a heating chamber for heating an object to be heated, heating means for heating the object to be heated, and heating of the heating chamber. An openable / closable door provided with a glass window having a mechanism for preventing radio wave leakage, located at the opening of the chamber, an illumination unit having an LED illumination unit for illuminating the heating chamber, and the heating means are selected and heating conditions are selected. An input unit having an input unit, a display unit for displaying the contents input from the operation unit and the progress of cooking, the heating unit and the LED illumination unit according to an input from the input unit Control means for controlling the display unit, and when the input to shift to the demo mode is made to the input means, the control means displays on the display unit that the demo mode is set, and Control the lighting of the LED lighting unit It is intended to.

  The present invention can attract attention by displaying the content displayed on the liquid crystal of the display unit during the operation in the demonstration mode and the timing of lighting and blinking of the LED illumination unit in the heating chamber.

The perspective view which looked at the main part of the cooking-by-heating machine of one example from the front side. AA sectional drawing of FIG. The perspective view which looked at the state which removed the outer frame from the main body of the heating cooker of one Example from the front side. The perspective view seen from the back side in the state which removed the outer frame from the main body of the heating cooker. The longitudinal cross-sectional view which cut the heating chamber of the heating cooker in the irradiation part. The perspective view seen from the front left upper part of the heating chamber of the heating cooker. The perspective view seen from the right front of the heating chamber to the heating cooker. The side view of the illumination unit attachment part seen from the left of the heating chamber of the heating cooker. The perspective view of the illumination unit attachment part seen from the left front upper direction of the heating chamber to the heating cooker. The longitudinal cross-sectional view which cut the illumination unit attachment part of the heating cooker in the irradiation part. The perspective view of the board | substrate holding member of the heating cooker. The front view of the board | substrate holding member of the heating cooker. The side view of the board | substrate holding member of the heating cooker. The rear view of the board | substrate holding member of the heating cooker. The perspective view of the glass holding member of the heating cooker. The front view of the glass holding member of the heating cooker. The top view of the glass holding member of the heating cooker. BB sectional drawing of FIG. The block diagram showing the control means of the heating cooker of one Example. Explanatory drawing of the flame | frame of the heating cooker of one Example. Explanatory drawing of the heating chamber seen through the hole group of the door from the door front of the heating cooker of one Example. Explanatory drawing which shows the flow of the demonstration mode of the heating cooker of one Example. Explanatory drawing of the example of a display in the demonstration mode displayed on the liquid crystal of the heating cooker of one Example. Explanatory drawing of the example of a display in the demonstration mode displayed on the liquid crystal of the heating cooker of one Example.

  Hereinafter, the specific contents of the present invention will be described in detail with reference to the above-described drawings of FIGS.

  1 to 4, the main body 1 of the heating cooker puts the food to be cooked in a heating chamber 28 having walls on the top, bottom, left, and right and the back, and uses microwaves, heaters, and steam heat to cover the food. Cook the cooked food.

  The door 2 opens and closes in order to put the food to be taken in and out of the heating chamber 28, and when the door 2 is closed, the heating chamber 28 is hermetically sealed to leak microwaves used for heating the food to be cooked. It is possible to prevent heat, contain heat, and heat efficiently. Details of the door 2 will be described later.

  The handle 9 is attached to the door 2 and facilitates opening and closing of the door 2, and has a shape that can be easily grasped by a hand.

  The glass window 3 is provided with a glass window inner side 3b on the heating chamber 28 side of the door 2 and an outer glass window outer side 3a so that the state of food being cooked can be confirmed, and is transparent to withstand high temperatures due to heat generated by a heater or the like. The glass is used. The outside 3a of the glass window has a good view without having a half mirror function for improving the design of the appearance. Thus, the glass window 3 makes it easy to see inside the heating chamber 28 by using transparent glass.

  The input means 71 is provided on the operation panel 4 below the front surface of the door 2, and is provided on the outside of the heating chamber upper surface 28 e of the heating chamber 28 and a range heating means 77 (FIG. 19) that heats the food by microwaves. Generated by the grill heating means 12 for heating the food to be cooked by the heater, the water vapor generating means 43 for heating the food to be cooked by water vapor, and the hot air unit 11 provided with the hot air heaters 14a, 14b on the back wall surface 28b of the heating chamber. A heating means such as an oven heating means for heating the heating chamber 28 with hot air to be selected, an operation unit 6 for inputting cooking conditions such as a heating time and an automatic menu, and contents inputted from the operation unit 6 and cooking And a display unit 5 for displaying the progress state. The display unit 5 is a display unit 5a (FIG. 21) with a touch panel that accepts a touch operation on the liquid crystal 5b (FIG. 21). The liquid crystal 5b is a dot liquid crystal having a high degree of freedom of display, and the color may be black and white or color. A demonstration mode for display at the store will be described later.

  The water tank 42 is a container for storing water necessary for producing water vapor. The water tank 42 is provided on the lower front side of the main body 1 and can be attached and detached from the front surface of the main body 1 to facilitate water supply and drainage. It can be done.

  The outer frame 7 is a cabinet that covers the upper surface and the left and right side surfaces of the main body 1 of the heating cooker.

  The rear plate 10 forms the rear surface of the cabinet described above, and an external exhaust duct 18 is attached to the upper portion of the rear plate 10. Exhaust holes 36 for discharging cooling air (waste heat) 39 after cooling the components are provided.

  The external exhaust duct 18 discharges the cooling air 39 that has passed through the exhaust hole 36 to the outside of the main body 1. Exhaust air is discharged from the external exhaust port 8 of the external exhaust duct 18, and the exhaust discharge direction is the main body 1. The air is exhausted to the upper side and to the front side. The exhaust direction is directed upward and toward the front side, so that the wall surface is not contaminated by the exhaust even when the rear surface is brought close to the wall surface.

  The machine room 20 is provided in a space portion between the heating chamber bottom face 28a and the bottom plate 21 of the main body 1. On the bottom plate 21, a magnetron 33 for heating food, a waveguide 47 connected to the magnetron 33, The control board 23, other components described later, and cooling means 50 (FIG. 19) for cooling these various components are attached.

  The heating chamber left side 28c and the heating chamber right side 28d (FIG. 5) of the heating chamber 28 are provided with a shelf 27 including an upper shelf 27a, an intermediate shelf 27b, and a lower shelf 27c, on which various heating dishes used for cooking are placed.

  The heating chamber bottom surface 28a has a concave shape in the substantially central portion, and the rotating antenna 26 is installed therein, and the microwave radiated from the magnetron 33 is output to the waveguide 47 and the output shaft 46a of the rotating antenna driving means 46. Flows into the lower surface of the rotating antenna 26 through the coupling hole 47a that penetrates, is diffused by the rotating antenna 26, and is radiated into the heating chamber 28. The rotating antenna 26 is connected to the output shaft 46 a of the rotating antenna driving means 46.

  The cooling means 50 is a fan device 15 in which a fan is connected to a cooling motor attached to the bottom plate 21, and the cooling air 39 blown by the cooling means 50 is a magnetron 33 that generates heat in the machine room 20 or an inverter board. 22, the weight detecting means 25 and the like are cooled, flow between the outside of the heating chamber 28 and the outer frame 7 and between the hot air case 11a and the rear plate 10, and the exhaust hole 36 is cooled while cooling the outer frame 7 and the rear plate 10. And is discharged from the external exhaust port 8 of the external exhaust duct 18.

  A hot air unit 11, which is a heating source composed of a heater, is attached to the rear of the heating chamber 28. The hot air unit 11 is provided with a hot air case 11 a on the rear side outside the heating chamber inner wall surface 28 b, and the heating chamber inner wall surface 28 b and the hot air case are provided. Hot air fan 32 and hot air heaters 14a and 14b are provided so as to be located on the outer peripheral side of hot air fan 32 between 11a and 11a, hot air motor 13 is attached to the rear side of hot air case 11a, and the motor shaft is provided in hole provided in hot air case 11a. It connects with the hot air fan 32 through.

  And the hot air unit 11 is connected through the hot air intake hole 31 and the hot air blowing hole 30 which are air passages provided in the heating chamber inner wall surface 28b, and the hot air fan 32 in the hot air case 11a is rotated by the hot air motor 13, The air between the heating chamber 28 and the hot air unit 11 is circulated, and the air circulated by the hot air heaters 14a and 14b is heated.

  Further, instead of the hot air unit 11, heaters may be provided on the upper and lower surfaces of the heating chamber 28 to heat the heating chamber 28.

  Outside the heating chamber upper surface 28e, grill heating means 12, which is a heating source composed of a heater, is attached. The grill heating means 12 wraps a heater wire around a mica plate to form a flat surface, presses and fixes the mica plate to the outside of the heating chamber upper surface 28e, heats the heating chamber upper surface 28e, and radiates heat to the cooking object in the heating chamber 28. It is something to bake.

  The heating chamber bottom surface 28a is provided with a plurality of weight detecting means 25, for example, a right weight sensor 25a, a left weight sensor 25b on the front left and right, and a back weight sensor 25c on the rear center, on which the table plate 24 is provided. Is placed.

  The table plate 24 is for placing food, has heat resistance so that it can be used for both heater heating and microwave heating, has good microwave permeability, and has no problem in terms of hygiene. It is molded with materials such as porcelain. The table plate 24 is a white-colored placement surface on which the object to be heated is placed in the heating chamber 28.

  Above the rear of the heating chamber 28, temperature detection means a85 for detecting the temperature in the heating chamber 28 is provided. The temperature detection means a85 is provided at a position that is not directly affected by the hot air blown into the heating chamber 28 from the hot air blowing hole 30 of the grill heating means 12 and the hot air unit 11.

  The steam unit 43 a (FIG. 19) includes a water vapor generating means 43 and a pump means 87.

  The water vapor generating means 43 is attached to the outer side surface of the left side surface 28c of the heating chamber, and the steam outlet 44 from which water vapor is ejected faces the heating chamber 28.

  Further, the water vapor generating means 43 is made of aluminum, and a sheathed heater as a boiler heating means 89 (FIG. 19) is embedded so as to be integrated at the time of casting. The power consumption of the heater is as large as around 600 W, and the steam generating means 43 can heat the water to a temperature at which it can be boiled in a short time.

  The water supply to the water vapor generating means 43 is supplied from the water tank 42 to the pump means 87 through the pipe 45 by driving the pump means 87, supplied to the water vapor generating means 43 through the pipe 40, and the water vapor generating means 43. Is heated and boiled, and becomes steam, and is ejected from the steam ejection port 44 to the heating chamber 28.

  The temperature detection means b88 detects the temperature of the water vapor generation means 43, transmits the detection result to the control means 151 (FIG. 19) described later, and controls the boiler heating means 89 and the pump means 87.

  The pump means 87 pumps the water in the water tank 42 to the water vapor generating means 43, and is composed of a pump and a motor that drives the pump. The adjustment of the amount of water supplied to the water vapor generating means 43 is determined by the ON / OFF ratio of the power supplied to the motor.

  The heating chamber 28 in the present embodiment will be described with reference to FIGS. An irradiation unit 28t for illuminating the inside of the heating chamber 28 is provided on the heating chamber right side surface 28d or the heating chamber left side surface 28c of the heating chamber 28. 5 to 7 are views in which an irradiation unit 28t is provided on the left side 28c of the heating chamber. Hereinafter, an example in which the irradiation unit 28t is provided on the left side surface 28c of the heating chamber will be described.

  The irradiation unit 28t includes an irradiation unit upper 28g and an irradiation unit lower 28h. The irradiation unit 28t has an opening in the left side surface 28c of the heating chamber. The irradiation unit upper part 28g is provided above the shelf upper stage 27a, and the irradiation part lower part 28h is provided between the shelf middle stage 27b and the shelf lower stage 27c. This is because the shelf lower stage 27c is irradiated when a dish is placed on the shelf lower stage 27c.

  An illumination unit 500 (FIG. 8) is provided outside the irradiation unit 28t.

  Reference numeral 28j denotes an inlet hole for allowing the heated air after cooling the magnetron 33 to enter the heating chamber 28, and is provided on the lower side of the heating chamber 28.

  The heating chamber upper surface 28e and the heating chamber inner wall surface 28b provided with a heating source that is heated by the grill heating means 12 and the hot air unit 11 are painted in black or gray. On the other hand, the heating chamber right side surface 28d, the heating chamber left side surface 28c, and the heating chamber bottom surface 28a irradiated with light from the LED illumination unit 400 provided outside the irradiation unit 28t of the heating chamber right side surface 28d or the heating chamber left side surface 28c are: Painted in white or ivory. The heating chamber right side surface 28d, the heating chamber left side surface 28c, and the heating chamber bottom surface 28a that are not provided with the heating source are brighter than the heating chamber upper surface 28e and the heating chamber inner wall surface 28b.

  The ivory is light yellowish and slightly gray white, and the inside of the heating chamber 28 reflects light from the white LED of the LED illumination unit 400 and diffuses and appears bright. The inside of the heating chamber 28 is colored in two colors, including the color of the heating chamber right side surface 28d, the heating chamber left side surface 28c, and the heating chamber bottom surface 28a, and the color of the heating chamber upper surface 28e and the heating chamber back wall surface 28b.

  The lighting unit 500 will be described with reference to FIGS. 6 and 8 to 18.

  In FIG. 6, a holding member support portion 507 s that is raised from the side surface to the outside and provided in a claw shape is provided below the irradiation portion lower portion 28 h of the left side surface 28 c of the heating chamber.

  11 to 14, reference numeral 501 denotes a substrate holding member. The substrate holding member 501 is formed of a transparent resin. Reference numeral 501a denotes a base portion having a notch-shaped connection port 501h. On the base portion 501a, there are provided an upper portion 501d and a supporting hole portion 501f. Further, below the base portion 501a, a lower portion 501e and a lower supporting hole portion 501g are provided.

  A light guide part 504 having a substantially truncated cone shape is provided on the front side of the base part 501a. The intersection of the light guide portion 504 and the base portion 501a is an elliptical base portion 504b that is long in the vertical direction. The distal end portion 506 is circular, and the base portion 504b and the distal end portion 506 are connected by a side surface portion 504a. The side surface portion 504a is a glossy surface. The tip 506 is subjected to a textured process.

  Further, a light incident portion 501m of the light guide portion 504 is provided on the back side of the base portion 501a. The light guide portion 504 has an outer peripheral portion 501b rising from the flat portion 501c. The light incident part 501m is a long and long ellipse and has a glossy surface. A base 501p and four claw portions 501k are provided on the back side of the base portion 501a.

  15 to 18, reference numeral 507 denotes a glass holding member.

  Reference numeral 507a denotes a rectangular flat portion, which is provided with rising holes 507b that rise to the front in two places. Side surface restraining portions 507c that expand in a stepped manner are provided on the left and right sides of the flat surface portion 507a. Support claw portions 507d that rise to the front side are provided on the left, right, top, and bottom of the side surface restraining portion 507c. A mounting surface 507e having a flat surface on the front side is provided on the left and right sides of the side holding portion 507c.

  Further, a fixed portion 507f bent to the front side is provided above the flat portion 507a. The fixing portion 507f includes a fixing hole 507g.

  A structure for attaching the illumination unit 500 to the heating chamber 28 will be described with reference to FIGS. 6 and 8 to 10.

  The glass 505 is supported on the front and left and right side surfaces by the side surface holding portion 507c (FIG. 15) of the glass holding member 507, and the upper and lower surfaces are supported by the support claw portion 507d (FIG. 15). The lower part of the glass holding member 507 holding the glass 505 is supported by the lower holding member support part 507s on the left side 28c of the heating chamber 28, and the fixing hole 507g of the fixing part 507f of the glass holding member 507 is fixed. The heating chamber upper surface 28e of the heating chamber 28 is screwed. When attached in this way, the glass 505 is provided on the rising side of the burring of the hole of the irradiation section 28t of the heating chamber 28, and the irradiation section 28t is closed with the glass 505, and the hot air (steam) and scattered matter in the heating chamber 28 are covered. The tip 506 of the light guide 504 is not soiled, and the glass 505 can be easily wiped off when soiled.

  Next, the heat shield plate 503 is attached to the outside of the left side surface 28c of the heating chamber from the outside where the glass 505 is fixed by the glass holding member 507. The heat shield plate 503 is provided with a hole 503c and a duct 503b through which the light guide unit 504 passes in a portion corresponding to the irradiation unit 28t.

  The printed circuit board 502 is a long and narrow rectangle, and an LED illumination unit 400 that is an upper LED illumination unit 401 and a lower LED illumination unit 402 with white LEDs is mounted on the upper and lower sides. The printed circuit board 502 includes a terminal 502 a connected to the control unit 151. The printed circuit board 502 is an aluminum substrate made of a material having good heat dissipation, such as aluminum, in order to dissipate the self-heating of the LED lighting unit upper 401 and the LED lighting unit lower 402. Aluminum substrates are used in LED bulbs. In addition, by holding the LED illumination unit upper 401 and the LED illumination unit lower 402 with a single printed board, it is possible to secure a large heat radiation area and enhance heat dissipation.

  In general, since an LED breaks when the junction temperature exceeds about 120 ° C., it is necessary to use the LED within a range not exceeding the break temperature.

  The temperature rise of the LED illumination unit 400 may be due to radiant heat from the heating chamber 28 heated by the grill heating means 12 and the hot air unit 11 and self-heating of the LED determined by the product of the LED current and the LED on voltage. .

  The printed board 502 is inserted into the back side of the board holding member 501 so that the surface on which the LED illumination unit 400 is mounted is in contact with the back side of the board holding member 501, and is placed on the table 501p (FIG. 14). It is fixed at the part 501k. The printed board 502 is provided with a gap between the base 501a (FIG. 14) and a wind path for flowing a cooling air 39d, which will be described later. Further, the terminal 502a protrudes from the connection port 501h (FIG. 14) of the substrate holding member 501 to the heating chamber 28 side. By fixing the printed board 502 to the board holding member 501, the upper LED illumination unit 401 and the lower LED illumination unit 402 mounted on the printed board 502 approach the light incident part 501m (FIG. 14) of the board holding member 501 and have a gap. Is fixed. Light on the LED illumination unit 401 and the LED illumination unit 402 with flat light emitting surfaces enters the light guide unit 504 from the flat light incident unit 501m without loss.

  In order to fix the board holding member 501 holding the printed board 502 to the heating chamber 28, the light guide part 504 is passed through the hole 503 c provided in the heat shield plate 503, and the vertical holding hole part 507 b of the glass holding member 507 is passed. The light guide unit 504 is inserted. The leading end 506 of the light guide 504 is close to the plane of the glass 505, and the upper portion 501d (FIG. 11) and the lower portion 501e (FIG. 11) of the substrate holding member 501 come into contact with the heat shield plate 503, and the support hole portion. The upright part 503a of the heat shield 503 is inserted and fixed to the upper part 501f (FIG. 11) and the lower supporting hole part 501g.

  In this way, by fixing the substrate holding member 501 holding the printed circuit board 502 to the heating chamber 28, the front end portion 506 of the light guide unit 504 is determined at a position corresponding to the irradiation unit 28t.

  Then, light is emitted from the LED illumination unit 400, and light is irradiated from the irradiation unit 28 t to the inside of the heating chamber 28 through the light guide unit 504 to illuminate the inside of the heating chamber 28 brightly.

  The reason why the light incident part 501m and the base part 504b are oval can be dealt with when the size of the light emitting part of the LED illumination part 400 is increased or when two light emitting elements are arranged.

  The light incident portion 501m and the side surface portion 504a are glossy surfaces, and the tip end portion 506 is subjected to a graining process so that light entering from the light incident part 501m does not leak from the side surface part 504a and diffuses by the graining process of the tip part 506. This is to let it go. It is diffused over a wide area in the heating chamber 28.

  The glass holding member 507 is a glass that guides the irradiation portion 28t and the light guide portion 504 on the left side surface 28c of the heating chamber by fixing the holding member supporting portion 507s on the left side surface 28c of the heating chamber and the upper surface 28e of the heating chamber by the fixing portion 507f. The position of the rising hole 507b of the holding member 507 can be matched.

  In order to reduce the radiant heat from the heating chamber 28, the printed circuit board 502 to which the LED illumination unit 400 is attached is fixed at a position away from the left side surface 28c of the heating chamber, and between the left side surface 28c of the heating chamber and the printed circuit board 502. In this case, a heat shield plate 503 is interposed.

  Then, the light emitted from the upper LED illumination unit 401 and the lower LED illumination unit 402 is guided to the irradiation unit 28 t by the light guide unit 504 integrated with the substrate holding member 501. The substrate holding member 501 is made of a heat-resistant transparent resin such as polycarbonate.

  The structure of the door 2 will be described with reference to FIGS.

  The door 2 of the high frequency heating cooker includes a choke structure 80a provided on four sides along the heating chamber opening 28f in order to prevent leakage of radio waves from the joint between the door 2 and the main body 1 during microwave heating, Punching portion 80d comprising a flat surface portion 80b that contacts the heating chamber flange portion 28k, a fixing portion 80c that fixes the glass window interior 3b, and a small hole group that can confirm an object to be heated placed in the heating chamber 28 while preventing leakage of radio waves. Are integrally formed. The punching portion 80d is provided with a step 80e with respect to the fixed portion 80c so as not to contact the punching portion 80d and the fixed glass window 3b.

  The frame 80 uses a metal steel plate having a thickness of 0.6, and the punching portion 80d includes a hole group 80g in which holes having a small diameter of φ1.35 are arranged in a staggered manner with a pitch of 1.6, and a strength holding portion 80f having no holes. Provided. The strength holding portion 80f is provided with a wide width in the longitudinal direction of the door 2 to prevent the door 2 from being twisted. And with respect to the area of the glass window 3b, conventionally, the aperture ratio of the hole is 35 to 50%, and the number of holes is increased up and down and left and right to increase the aperture ratio to 60% or more. Visibility is improved. A hole group 80g in which holes having a small diameter of 1.35 are arranged in a staggered manner with a pitch of 1.6 cannot increase the aperture ratio by greatly changing the diameter of the holes in order to prevent radio wave leakage.

  FIG. 19 is a block diagram showing the control means of the heating cooker. Next, operation | movement of the system of a heating cooker is demonstrated using FIG. The power source 76 is for operating the main body 1 of the cooking device.

  The hot-air unit 11 includes a hot-air motor 13 on the rear side of the hot-air case 11a provided outside the heating chamber inner wall surface 28b including the hot-air intake holes 31 and the hot-air blowing holes 30, and a hot-air fan 32 is attached to the motor shaft through the holes of the hot-air case 11a. The hot air heaters 14 a and 14 b are provided on the outer peripheral side of the hot air fan 32, and the hot air is circulated and supplied to the heating chamber 28.

  The range heating means 77 is an inverter board 22 on which an inverter circuit that creates a power source for driving the magnetron 33 and the magnetron 33 is mounted. The inverter circuit creates a power supply corresponding to the heating power input from the input means 71 and supplies it to the magnetron 33.

  The grill heating means 12 is composed of a heater provided on the back side of the top surface of the heating chamber 28, and heats the heating chamber upper surface 28 e of the heating chamber 28 to bake an object to be cooked (not shown) in the heating chamber 28 by radiant heat. Is.

  The cooling means 50 is a fan device 15 in which a fan is connected to a cooling motor attached to the bottom plate 21, and the cooling air 39 blown by the cooling means 50 is a magnetron 33 that generates heat in the machine room 20 or an inverter board. 22. Cool the weight detection means 25 and the like. In particular, during the range heating, the cooling air 39d whose temperature has risen after cooling the magnetron 33 that generates heat is blown upward from the lower side of the left side surface 28c of the heating chamber, and part of the cooling air 39d is a heat shield plate. The heating chamber 28 of the glass window 3 is flown into the duct 503b (see FIG. 10) provided in the passage 503 and blown into the heating chamber 28 from the inlet hole 28j (see FIG. 6) to warm the food to be cooked. The fogging of the side and the fogging of the glass 505 are prevented. The cooling air 39d that has flowed into the duct 503b flows between the flat surface portion 507a (see FIG. 16) provided with the rising hole portion 507b of the glass holding member 507 and the glass 505, and particularly the front end portion of the light guide portion 504. Cool 506.

  Further, the cooling air 39 d (see FIG. 10) that flows between the heat shield plate 503 and the outer frame 7 is applied to the substrate holding member 501, the printed circuit board 502, and the printed circuit board 502 that are outside the heat shield plate 503. The mounted LED illumination unit 400 is cooled. In particular, thanks to the gap provided between the printed board 502 and the base portion 501a described above, both sides of the printed board 502 can be efficiently cooled. Further, the cooling air 39d flows through the gap between the light emitting surface of the LED illumination unit 400 and the light incident unit 501m, and the LED illumination unit 400 can be efficiently cooled.

  Further, by making the light guide portion 504 longer, heat conduction from the temperature of the wall surface of the heating chamber 28 is prevented, and further, the heat shielding plate 503 is interposed to block radiant heat.

  When the magnetron 33 is not operating during heating by the heater, the temperature of the cooling air 39d is lowered, so that the substrate holding member 501, the printed board 502, and the LED illumination unit 400 are efficiently cooled even during heating using the heater.

  The rotating antenna driving means 46 is a motor for driving the rotating antenna 26, and a synchronous motor and a gear for reducing the rotational speed are integrated.

  The weight detection means 25 measures the weight of the food to be cooked placed on the table plate 24.

  The temperature detection means a85 is attached to the heating chamber 28, detects the temperature in the heating chamber 28, and adjusts the power of the heater of the grill heating means 12 by the control means 151.

  The steam unit 43 a is composed of water vapor generating means 43 and pump means 87.

  The water vapor generating means 43 comprises a boiler heating means 89 comprising a heater for heating water, and a temperature detecting means b 88 for detecting the temperature of the water vapor generating means 43, and the control means 151 is configured to heat the boiler from the detection result of the temperature detecting means b 88. The means 89 and the pump means 87 are controlled.

  Reference numeral 71 denotes an input means, which shows the operation unit 6 and the display unit 5 here. The display unit 5 includes a display unit 5a with a touch panel (included in the operation unit 6) and a liquid crystal 5b.

  Reference numeral 151 denotes a control unit which is mounted on the control board 23 and operates to cook food according to the contents input from the input unit 71. The state of the food and the state of the heating chamber are detected from each detection unit. Then, each heating means and driving means are operated as necessary. When the demo mode is set, the liquid crystal 5b is controlled to display the contents of the demo mode, and the LED illumination unit 400 is controlled to be turned off, turned on, and blinked.

  The transition to the demo mode is performed by a special operation of the operation unit 6. When the transition is made to the demo mode, a plurality of heating means are not operated.

  The LED illumination unit 400 is controlled by the control unit 151 to emit light during cooking and illuminate the inside of the heating chamber 28 brightly.

  Next, it will be described with reference to FIG. 21 that the heating chamber 28 looks bright.

  FIG. 21 is an explanatory diagram of the heating chamber 28 viewed from the front of the door 2 through the hole group 80g. The door 2 shown in FIG. 21 includes a frame 80 in the door 2, and the total area of the small-diameter hole group 80 g for fluoroscopy provided in the frame 80 is larger than the area of the glass window 3 b provided on the heating chamber 28 side. Thus, a large number of the holes are provided so as to be 60% or more. In this case, when the door 2 is closed and the heating chamber 28 is viewed through the hole group 80g, the whole can be seen up to the four corners of the table plate 24 as a mounting surface. The four corners are the positions of P2, P3, P4, and P5 shown in FIG.

  The table plate 24, which is the surface on which the object is to be heated, is white-colored, and when the door 2 is closed and the heating chamber 28 is viewed through the hole group 80g, the entire view can be seen up to the four corners of the table plate 24. Since the light is diffused in the heating chamber 28 due to the embossing of the front end portion 506 of the light guide portion 504, there is no difference in brightness over the glass window 3, and the entire heating chamber 28 looks bright.

  The demonstration mode will be described with reference to FIGS.

  FIG. 22 is an explanatory diagram showing the flow of the demo mode, and FIGS. 23 and 24 are explanatory diagrams of display examples in the demo mode displayed on the liquid crystal.

  The explanatory diagram of FIG. 22 shows that the step S of the demo mode is from 1 to 10 steps from the top, then the display content of the liquid crystal 5b, and then the LED illumination unit 400 is turned off. The time of each operation | movement of the illumination part 400 is shown in a second unit.

  FIG. 23 shows an example of display on the liquid crystal 5b in step S of the demo mode. 23 (a), (b), (c), (d), and (e) are examples of step 1, step 2, step 3, step 4, and step 5 in FIG. FIG. 23 (a) shows no display in step 1. FIG. 23B shows the nickname of the product in step 2. From this step 2, display of the demo mode is started. FIG. 23 (c) displays a promotion advertisement Cm, which is a feature of the product, in step 3. Here, “W scan” is displayed, and characters and moving images are displayed. FIG.23 (d) displays the appeal Cm similarly at step 4. FIG. In this case, the display is “characters with bright colors and easy to see”, and is displayed with text and animation illustrations. FIG. 23 (e) displays a promotion Cm in step 5. Here, the display is about “healthy cooking” and is displayed with characters and animation illustrations.

  FIG. 24 shows an example of display on the liquid crystal 5b in step S of the demo mode. 24 (f) (g), (h), (k), and (m) are examples of Step 6, Step 7, Step 8, Step 9, and Step 10 in FIG. FIG. 24 (f) displays an appealing advertisement Cm in step 6. Here, the display is “Easy operation”, which is displayed with characters and animation illustrations. FIG. 23 (g) displays the promotional Cm in step 7. Here, “Easy to clean” is displayed with characters and animation illustrations. FIG. 23 (h) displays an appealing advertisement Cm in step 8. Here, the “bakery function” is displayed as an illustration of characters and moving images. FIG. 23 (k) displays a promotion Cm in step 9. In this example, the “compact installation” is displayed as a character and a moving picture illustration. FIG. 23 (m) shows no display in step 10.

  In FIG. 22, step 1 is 0.5 seconds, and the LED illumination unit 400 is off. In step 2, the LED illumination unit 400 gradually becomes brighter and is lit for 4.5 seconds. Then, it blinks for 1 second and goes out for 0.5 seconds. For 14 seconds of Step 3, the LED illumination unit 400 is lit. Since Step 3 is immediately after the light is turned off in Step 2, the LED illumination unit 400 does not blink for a predetermined time Ta (1 second) immediately after Step S is switched as in Step 5 or Step 6.

  In the initial switching Ha at Step 4, the LED illumination unit 400 blinks for 2 seconds, then lights for 6 seconds, then blinks again for 2 seconds at the intermediate portion Hb, and then lights for 6 seconds.

  Step 5 is switched, and the initial stage Ha blinks the LED illumination unit 400 for a predetermined time Ta (1 second) and then lights for 18 seconds. Step 6 is switched, and the initial Ha blinks the LED illumination unit 400 for a predetermined time Ta (1 second) and then lights for 30 seconds. Step 7 is switched, and the initial Ha blinks the LED illumination unit 400 for a predetermined time Ta (1 second) and then lights for 18 seconds. Step 8 is switched, and the initial Ha blinks the LED illumination unit 400 for a predetermined time Ta (1 second) and then lights for 18 seconds. Step 9 is switched and the initial Ha blinks the LED illumination unit 400 for a predetermined time Ta (1 second) and then lights for 8 seconds. Step 10 is 2.5 seconds, and the LED illumination unit 400 is gradually darkened and turned off.

  Step 4 is a specific step Sp for promoting visibility Cm of the visibility of the heating chamber 28 as described above with reference to FIG. In this specific step Sp, the switching initial Ha and the intermediate portion Hb are switched over in 2 seconds longer than the predetermined time Ta (1 second) so as to be different from the predetermined time Ta (1 second) in the other steps 5 or 6. The LED illumination unit 400 blinks and operates twice in the middle portion Hb. Thereby, the relevance between the heating chamber 28 and the promotion advertisement Cm of the visibility of the heating chamber 28 that the heating chamber 28 is easy to see is strengthened.

  That is, the table plate 24, which is the placement surface of the object to be heated, is white. When the door 2 is closed and the heating chamber 28 is viewed through the hole group 80g, the whole can be seen up to the four corners of the table plate 24 which is the mounting surface. Light is diffused in the heating chamber 28 due to the embossing of the tip 506 of the light guide 504, and there is no difference between light and darkness through the glass window 3, so that the entire heating chamber 28 appears brightly. Is.

  Then, the entire heating chamber 28, which is several times larger than the liquid crystal 5b, is brightly illuminated and further blinked to attract attention.

  And as shown in FIG. 22, the LED illumination part 400 is lighted in step S which shows the appeal Cm on the liquid crystal 5b. Therefore, while viewing all the demonstration modes from Step 1 to Step 10, the liquid crystal 5b can be viewed, or the LED illumination unit 400 can be lit and the bright heating chamber 28 can be viewed. Thereby, in special step Sp, a person who knows that the heating chamber 28 is bright in the promotion advertisement Cm by the liquid crystal 5b can see the bright heating chamber 28 with the LED illumination unit 400 turned on even after the special step Sp. . And the heating chamber 28 can be judged as operating brightness by operating at the brightness during normal use.

  Further, when the LED illumination unit 400 is blinked, the moving image displayed on the display unit 5 is erased, and attention is directed to the bright heating chamber 28 that has no difference in light and darkness seen through the large glass window 3.

  The present embodiment has the above configuration, and the operation will be described next.

  A case where an object to be heated is heated by a microwave will be described.

  In the case of microwave heating, the object to be heated is placed on the table plate 24 in the heating chamber 28 and cooking is started.

  In that case, except for the heating chamber back surface 28b and the heating chamber top surface 28c provided with a heating source, the heating chamber bottom surface 28a (in the embodiment, the white table plate 24 used during cooking corresponds), the heating chamber right side surface 28d, and the heating chamber. Three surfaces of the left side surface 28e occupy bright colors. The visibility of the object to be heated placed in the heating chamber 28 is greatly improved by using bright colors for three of the five surfaces constituting the heating chamber 28.

  In addition, by setting the color of the wall surface provided with the illumination unit 500 and the wall surface illuminated by the spread of light from the illumination unit 500 (the wall surface facing the wall surface provided with the illumination unit 500) to a color that reflects light well, Light reflection occurs between the opposing wall surfaces, and the heating chamber 28 can be efficiently brightened. Similarly, the light reflection efficiency can be improved by using a bright color for at least one wall surface of the heating chamber bottom surface 28a or the heating chamber back wall surface 28b so as to connect the wall surfaces.

  In addition, by making the color of the heating chamber bottom surface 28a on the traveling side of the light incident from the door 2 a color with good light reflection, the incident light can be efficiently reflected and the heating chamber 28 can be efficiently brightened. it can.

  Furthermore, by increasing the number of holes in the frame 80 provided in the door 2 up and down to increase the aperture ratio to 32%, the visibility of the heated object placed in the heating chamber 28 is further improved.

  By doing so, the inside of the heating chamber 28 seen through the large glass window 3 has no difference between light and dark, and the whole heating chamber looks bright. For example, even when operating in a demo mode in a bright store, it can stand out very well. It becomes.

As described above, according to the present embodiment, the contents displayed on the liquid crystal of the display unit during the operation of the demo mode and the timing of lighting (flashing) of the LED illumination unit of the heating chamber can be displayed in association with each other. You can get attention.

2 Door 3b Glass window 5b Liquid crystal 12 Grill heating means (heating source)
24 Table plate (mounting surface)
28 Heating chamber 28b Heating chamber back wall surface 28c Heating chamber left side surface 28d Heating chamber right side surface 28e Heating chamber upper surface 28f Heating chamber opening 28t Irradiation unit 71 Input unit 80 Frame 80g Hole group 151 Control unit 400 LED illumination unit 500 Illumination unit Cm Advertising Ha Switching Initial Hb Intermediate part S Step Sp Specific step Ta Predetermined time

Claims (1)

A heating chamber for heating an object to be heated;
Heating means for heating the object to be heated;
An openable / closable door provided with a glass window having a mechanism for preventing radio wave leakage, located at the heating chamber opening of the heating chamber;
An illumination unit having an LED illumination unit for illuminating the heating chamber;
An operation unit that selects the heating unit and inputs a heating condition; and an input unit that includes a display unit that displays an input content from the operation unit and a cooking progress state;
Control means for controlling the heating means, the LED illumination unit and the display unit in response to an input from the input means,
The control means displays, when the input to shift to the demo mode is made on the input means, that the display section is in the demo mode, and controls the lighting of the LED illumination section in relation to the display. A heating cooker featuring.

Images