JP5493493B2 - Cooker - Google Patents

Description

  The present invention relates to a door structure of a heating cooker that cooks an object to be heated.

  An example of a vertically open door structure used in a conventional cooking device is shown in FIGS. FIG. 9 is a cross-sectional view of the front door and the front portion of the heating chamber in the conventional cooking device, and FIG. 10 is a cross-sectional view of the front door of the conventional cooking device.

  In the figure, a door 13 is provided at an opening on the front surface of the main body of the heating cooker so as to be freely opened and closed so that the food 11 to be heated can be put into the heating chamber 10. The door 13 is formed by the outer barrier 1, the inner barrier 8, and the door frame 5, and a space portion is provided therein.

  The door 13 includes a decorative frame 4 that fits the outer barrier 1, a handle frame 3 that fixes the outer barrier 1 to the decorative frame 4, a handle 2 provided on the handle frame 3, and an inner barrier 8 that is made of silicon. A door shield 9 fixed with a putty or the like, a display unit 6 sandwiched and fixed between the decorative frame 4 and the door frame 5, and a control button 7 attached to the decorative frame 4 are provided.

  In the door 13 of the conventional cooking device, silicon putty is applied to the entire circumference of the outer barrier 1 in order to fix the outer barrier 1 to the decorative frame 4. The silicon putty is provided with a notch for ventilation so that air can escape. The upper portion of the door 13 is a notch that forms a waterproof wall. However, in the lower part of the door 13, there is no means for preventing water from entering the decorative frame 4 side to which the outer barrier 1 is fitted, so that a notch for ventilation is not provided.

  In addition, as an example in which the notch portion is provided in the lower portion of the door 13, for example, there is one described in Patent Document 1.

Japanese Utility Model Publication No. 58-20806

  In the case of the door structure of the conventional cooking device shown in FIGS. 9 and 10, since the notch for venting the lower part of the door 13 is not provided, the moist air 12 inside the door 13 is heated in the heating chamber. 10 is heated by the heat from 10 and a temperature difference is generated between the air in the space near the display unit 6 and the outside air. As a result, dew condensation occurs at a low temperature, and cloudy 1a may occur inside the outer barrier 1.

  If a notch part is also provided in the lower part as in Patent Document 1, air permeability is improved, and clouding can be prevented in the space part inside the door 13, but water is applied from the front surface. As a countermeasure against waterproofing, it has been difficult to provide a ventilation notch in the lower portion of the door 13.

  Since the cloudy la due to this dew condensation cannot be wiped off by the user, conventionally, the prevention of the cloudy la is given priority over the waterproofing measures that are unlikely to be used, and the application position of the fixing putty for the outer barrier 1 is cut out. A portion is provided so that the cloudy la is not generated. It was necessary to take waterproof measures such as the need to attach a waterproof sheet 7a to the front surface of the control button 7.

  In addition, since the cutout portion is provided in the lower portion of the decorative frame 4, the outer barrier 1 is likely to be lifted from the lower end surface of the decorative frame 4, and there is a problem that the quality of the product is lowered. .

  Furthermore, since the notch portion is provided depending on the application state of the silicon putty, the size of the notch portion through which the outside air flows is not constant, and the productivity problem that the cloudy 1a may or may not occur is left. It was.

The present invention has been made to solve the above problems, and supports an outer barrier and an inner barrier facing each other across an inner space portion, and supports the outer barrier and the inner barrier from above and below, so that the outside air and the space portion are supported. In a heating cooker having a door provided with an upper door frame and a lower door frame, each of which is provided with a notch portion that communicates with each other, inside the notch portion provided in the lower door frame and in the space portion Provided with a waterproof levee higher than the thickness of the outer barrier on the near side, and provided with a display unit for displaying characters, figures or images inside the space, and a control unit for controlling the display unit, the door Outside air is taken in from the air intake port provided at the lower part, exhausted from the air exhaust port provided at the upper part of the door, and is provided at several places between the lower back surface of the outer barrier and the upper front part of the lower side of the generally rectangular decorative frame. The first gap and under the decorative frame A plurality of second gaps provided between the upper part of the back of the unit and the door frame located on the rear side thereof, the air passing through the first gap passes through the back of the outer barrier, and the first The air that has passed through the gap between the two flows along the front surface of the display unit above the door .

  According to the door structure of the heating cooker of the present invention, the anti-fogging performance can be improved, and the waterproof performance of the ventilation part of the control button without increasing the number of members by using a part of the door frame as a connecting button. The cost can be reduced.

The front view of the door of the heating cooker in Embodiment 1 of this invention Sectional drawing of the door of the heating cooker in Embodiment 1 of this invention Upper cross section of the door shown in FIG. Lower enlarged sectional view of the door shown in FIG. The principal part expanded sectional view of the door shown in FIG. Sectional drawing of the lower part of the door of the heating cooker in Embodiment 2 of this invention Plan sectional view of the door shown in FIG. Lower horizontal section of the door of the heating cooker Cross-sectional view of a conventional cooking device Cross-sectional view of a door in a conventional cooking device

  1st invention supports the outer side glass (outer barrier) and inner side glass (inner barrier) which oppose across an internal space part, and the outer side glass (outer barrier) and the inner side glass (inner barrier) from above and below. In the cooking device having a door provided with an upper door frame and a lower door frame, each of which is provided with a notch for communicating outside air with the space, of the notch provided on the lower door frame. A waterproof levee higher than the thickness of the outer barrier is provided on the inner side and the side close to the space.

  As a result, even when water is splashed from the outside of the door, it is possible to steadily make an object while ensuring anti-fogging performance by circulating air from the bottom to the top without allowing its entry. Further, by using a part of the door frame as a connection button, the waterproof performance of the ventilation portion of the control button can be enhanced without increasing the number of members, and the cost can be reduced.

In addition , a display unit that displays characters, figures, or images and a control unit that controls the display unit are provided inside the space unit. This prevents clouding inside the door and prevents the display unit provided inside the door from becoming difficult to see.

Also , there are several first gaps provided between the lower back surface of the outer glass and the front upper portion of the lower side portion of the approximately square-shaped decorative frame, and the rear upper portion of the lower side portion of the decorative frame and the rear side thereof. By providing the second gaps provided at several places between the door frame and the door frame, the moist air around the rear surface of the outer glass and the display portion can be discharged from the exhaust port provided in the upper part of the door. Therefore, the outer glass on the front surface of the display unit and the liquid crystal panel of the display unit become cloudy, the display becomes difficult to see, and the problem that the cooker user cannot wipe off the cloudy product can be prevented and the display can be prevented. The control board to which the part is attached can be cooled to improve the reliability against temperature rise.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in this Embodiment, the same code | symbol is attached | subjected to the part similar to the said conventional heating cooker, and detailed description is abbreviate | omitted.

(Embodiment 1)
1 is a front view of a door of a heating cooker according to Embodiment 1 of the present invention, FIG. 2 is a sectional view of the door, FIG. 3 is an enlarged top sectional view of FIG. 2, and FIG. 4 is a bottom enlarged sectional view of FIG. It is.

  In the figure, the door 29 is provided in the opening part of the front surface of the heating chamber 10 so that opening and closing is possible in the vertical direction. The door frame 25 is a frame that constitutes the skeleton of the door 29, is molded with a resin material into a square shape, and components such as control components of the door 29 are attached. The decorative frame 24 is molded in a square shape, and is fitted and attached to the front edge of the door frame 25 at the door 29. An outer glass 21 (outer barrier) is attached to the front side of the decorative frame 24. A handle 22 is fixed to the upper part of the decorative frame 24 via a handle frame 23.

  A metal radio wave shield is attached to the heating frame 10 side of the door frame 25. The inner glass 28 (inner barrier) is attached to the door frame 25 so as to face the heating chamber 10.

  The display unit 26 includes a liquid crystal panel, and is sandwiched and fixed between the decorative frame 24 and the door frame 25 from the front and rear, and displays characters, figures, or images. The control button 27 is attached to the decorative frame 24. In order to fix the outer glass 21 to the decorative frame 24, the lower side portion of the outer glass 21 is fitted and the outer glass 21 is supported. 24c is provided.

  Conventionally, a silicone putty is applied to the door frame and a decorative frame is pasted thereon. However, in the present invention, the lower side portion of the outer glass 21 is inserted into the pocket-shaped portion 24c of the decorative frame 24, and the outer glass 21 is inserted. Several notches that form a gap of 0.5 to 1.0 mm between the outer glass 21 are arranged in parallel on the decorative frame 24 at a position facing the lower inner side. Then, a ventilation gap is opened horizontally in the back part of the pocket-shaped part 24 c, and the part on which the outer glass 21 is placed is extended inward to be larger than the thickness dimension of the outer glass 21. As a result, the waterproofing ledge 24b is formed, and even if water is splashed from the outside of the door 29, it is possible to allow the entry.

  Further, a gap between the control button 27 and the opening of the decorative frame 24 is used as an outside air inlet 27a. When the humid air inside the door 29 is heated during cooking, the inside of the door 29 rises (air 31c), so outside air is taken in from the intake port 27a (air 31b), and the heated air 31c is discharged from the exhaust port 23b. Is discharged to the outside (exhaust 31a).

  Thus, the humid air 31 inside the door 29 is discharged, whereby air circulation occurs, and a clouding phenomenon due to condensation on the inner surface of the outer glass 21 can be prevented.

Further, the heated air inside the door 29 is discharged out of the door 29, so that the air inlet 2
Since the outside air (intake 31b) entered from 7a lowers the temperature inside the door 29, the ambient temperature between the display unit 26 and the control board 25c to which the display unit 26 is attached is also lowered. 26 and the control board 25c are protected from high heat generated during cooking.

  According to the present embodiment, since the gap near the control button 27 is used as a suction port, there is no need to provide a special gap between the outer glass 21 and the pocket-shaped portion 24c of the decorative frame 24, and a gap with little variation in dimensions. Therefore, the anti-fogging performance is ensured. Further, since the air inside the door 29 is ventilated, there is an effect of protecting the control board 25c and the display unit 6 from high temperatures.

  As described above, in order to fit the lower side portion of the outer glass 21 and support the outer glass 21, the pocket-shaped portion 24 c is provided on the upper surface side of the lower side portion of the square shape of the decorative frame 24. As a result, the anti-fogging performance can be ensured, and the door 29 with stable performance can be provided.

  Next, waterproofing measures in the present embodiment will be described with reference to FIG. FIG. 5 is an enlarged cross-sectional view of the main part of FIG.

  As shown in FIG. 5, in the present embodiment, even when water is applied to the outer surface of the outer glass 21 (outer barrier), the waterproof embankment 23 a provided in the handle frame 23 causes the air from the exhaust port 23 b. Infiltration of water can be prevented.

  Then, the water may fall along the surface of the outer barrier 21 and enter the door 29 from the air inlet 23b. Even in this case, the water is blocked by the waterproof levee 24b provided above the air inlet 27a. The water can be prevented from reaching the space between the outer glass 21 and the inner glass 28.

  The infiltrated water is temporarily stored in a water storage chamber 24a provided at the lower part of the door 29, and drained from the gap at the joint between the decorative frame 24 and the door frame 25 (drainage 32c). Thereby, the water once stored in the water storage chamber 24a can be prevented from entering the space portion when the door 29 is opened and closed.

  Furthermore, the waterproof sheet 25b is pasted on the inner side of the control button 7 for waterproofing, so that the size of the waterproof sheet 25b can be kept to a minimum, and parts of the door frame 25 can be used as interlocking buttons 25a. Therefore, it is advantageous in terms of cost, and stable anti-fogging performance is ensured.

  As described above, according to the present embodiment, a heating cooker having stable anti-fogging performance can be realized even if the display unit 26 is provided inside the door 29.

(Embodiment 2)
6 is a lower cross-sectional view of the door of the heating cooker according to the second embodiment of the present invention, FIG. 7 is an enlarged view of the main part of FIG. 6, and FIG. 8 is a lower horizontal cross-sectional view of the door of the heating cooker. Is shown.

  In this figure, in the present embodiment, the air sucked from the gap near the control button 27 flows not only to raise the back surface of the outer glass 21, but also to lick the front surface of the display unit 26.

Therefore, in addition to the configuration of the first embodiment, the pocket-shaped portion 24 c is formed in a horizontally long groove shape on the upper surface of the lower side portion of the generally rectangular shape of the decorative frame 24. And the lower part of the outer side glass 21 is inserted in this pocket shape part 24c, and the outer side glass 21 lower part is supported.
The upper part of the outer glass 21 is composed of a handle frame 23 and a door frame 25, and the upper part of the outer glass 21 is inserted into a pocket-shaped part 23c formed in a horizontally long groove shape to support the upper part of the outer glass 21. ing.

  A part of the lower side portion of the generally rectangular shape of the decorative frame 24 is located between the display unit 26 and the outer glass 21. A portion of the decorative frame 24 facing the display unit 26 is provided with a display opening so that the user of the heating cooker can see the display on the display unit 26 through the outer glass 21 from the front of the heating cooker. It has become. A gap is provided between the front surface of the display unit 26 and the opening periphery of the decorative frame 24. The display unit 26 has a liquid crystal panel and is mounted on the control board, and displays characters, figures, or images. A boss protrudes from the door frame 25, and the control board is fixed to the door frame 25 with screws.

  A gap (a first gap) between the lower back surface of the outer glass 21 and the front upper portion of the lower side portion of the generally rectangular shape of the decorative frame 24 (the first gap) has a depth dimension of about 0.5 to 1.0 mm. ) Are provided in two horizontally long positions. In addition, a gap (second gap) between the upper portion of the rear side of the lower side of the decorative frame 24 and the door frame 25 positioned behind the decorative frame 24 is a depth of about 0.5 to 1.0 mm. ) Are provided horizontally in two places.

  Thereby, the air sucked from the gap in the vicinity of the control button 27 flows upward through the ventilation gap at the tip of the waterproof embankment 24b at the back of the pocket-shaped portion 24c. One flow then flows upward through a gap (first gap) between the back surface of the outer glass 21 and the front surface of the decorative frame 24. The other air flow passes through the gap (second gap) between the back surface of the decorative frame 24 and the door frame 25 behind the decorative frame 24, is guided by the decorative frame 24, and runs along the front surface of the liquid crystal panel of the display unit 26. , Flowing upwards.

  At this time, moist air around the back surface of the outer glass 21 and the display unit 26 can be discharged from the exhaust port 23b provided in the upper portion of the door 29 by the flow of air. Therefore, the outer side glass 21 on the front surface of the display unit 26 and the liquid crystal panel of the display unit 26 are clouded, the display is difficult to see, and the problem that the user of the cooking device cannot wipe off the cloud can be prevented. .

  And a control board is cooled and the reliability with respect to a temperature rise can be improved.

  The present invention is applicable to a cooking device such as a microwave oven.

DESCRIPTION OF SYMBOLS 10 Heating chamber 21 Outer barrier 22 Handle 23 Handle frame 23a Waterproof offer 23b Exhaust port 24 Decoration frame 24a Water storage chamber 24b Waterproof offer 24c Pocket shape 24d Gap (1st gap)
24e gap (second gap)
25 Door frame 25a Interlocking button 25b Waterproof sheet 25c Control board 26 Display unit 27 Control button 27a Air inlet 28 Inner barrier 29 Door

Claims (1)

An upper door frame and a lower door provided with an outer barrier and an inner barrier facing each other across an internal space, and a notch for supporting the outer barrier and the inner barrier from above and below and communicating the outside air with the space. In a heating cooker having a door with a side door frame,
A waterproof levee higher than the thickness of the outer barrier is provided on the inner side of the notch portion provided on the lower door frame and on the side close to the space portion, and characters, figures or images are provided inside the space portion. A display unit for displaying and a control unit for controlling the display unit;
Outside air is taken in from the air inlet provided in the lower part of the door, discharged from the air outlet provided in the upper part of the door, and several places between the lower back of the outer barrier and the upper part of the front of the lower side of the roughly rectangular decorative frame A first gap provided, and a plurality of second gaps provided between a back upper part of the lower side of the decorative frame and a door frame located on the rear side thereof,
The cooking device according to claim 1, wherein the air passing through the first gap passes through the back surface of the outer barrier, and the air passing through the second gap flows along the front face of the display unit upward to the door .