JP3393177B2 - High frequency heating equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating device provided with a halogen lamp for illuminating an object to be cooked.

[0002]

2. Description of the Related Art In order to see the finish of an object to be cooked in a heating chamber, an incandescent lamp provided on the side wall of the heating chamber is usually used to illuminate the inside of the heating chamber.

As a first conventional example, the actual construction of Shokai 58-85108
In the publication, the air guide 103 is attached to the blower 102 inside the main body 101 shown in FIG. 3 to cool the high frequency generator 104, and the cooled air is further provided with an illumination lamp 105 in the air guide to cool the open main body side wall. A punching hole 106 is provided in the chamber and air is introduced into the heating chamber 107.

The reason why the air is introduced into the heating chamber 107 is to prevent fogging of the glass portion or the like arranged on the inner surface of the door due to the generation of steam from the food to be cooked.

Further, as a conventional example 2, Japanese Patent Laid-Open No. 63-189.
In Japanese Patent Publication No. 714, a halogen lamp 206 is used as an illuminating lamp on the side wall of the heating chamber shown in FIG. 4, and the outside air 202 is taken in by a blower as in Conventional Example 1 to cool the high frequency heating device 203. Air cooled by the high-frequency heating device 203 is guided by an air guide 205 to a punching hole 207 formed on the side wall of the open body, and the air is guided from the punching hole 207 to the heating chamber 201. A shielding plate 204 is provided in the air guide 205 so that the halogen lamp 206 is not directly exposed to the wind to maintain the lamp life.

Further, as a conventional example 3, Japanese Patent Laid-Open No. 5-26
In Japanese Patent No. 454, the heating chamber top surface 301 shown in FIG.
The rod-shaped halogen lamp 302 is provided near the center in the front-rear direction, the lamp reflector is provided, and the translucent plate such as glass is provided inside the cooking chamber, and the light of the rod-shaped halogen lamp 302 is emitted from the punching hole 303. By doing so, even if the cooking rack is moved up and down, the illumination is constantly illuminated from above the object to be cooked so that it is easier to see than the side wall of the heating chamber.

The rod-shaped halogen lamp 303 is arranged parallel to the horizontal direction of the heating chamber (when viewed from the door side). In this case, as in the method of introducing air into the heating chamber, punching holes 304 are provided from the side wall as in the conventional case.

[0008]

However, as described above, the purpose of arranging the halogen lamp on the top surface in the conventional example 3 is only to uniformly illuminate the object to be cooked by changing the height of the shelves in the heating chamber. , When the halogen lamps are arranged in this way, the top surface of the cabinet becomes hot due to the heat generated from the halogen lamps, and the fog caused by the water vapor on the door glass is taken in from the side wall as in the conventional case. The steam generated by heating adhered to the door glass, leaving a difficulty in seeing inside the cooking chamber.

Further, the rod-shaped halogen lamp is arranged parallel to the left and right direction of the heating chamber so that the impact force of the door is not easily transmitted to the filament in the halogen lamp, but this alone cannot sufficiently absorb the impact. However, there remains a problem that the life of the halogen lamp is shortened.

Further, when the halogen lamp is arranged on the top surface of the heating chamber, there is a problem that the temperature of the top surface of the cabinet abnormally rises due to the exhaust heat and the temperature inside the cooking chamber.

[0011]

SUMMARY OF THE INVENTION The present invention solves the above problems by lowering the cabinet top surface temperature and utilizing the exhaust heat of a halogen lamp as a measure against fog on the door glass to raise the temperature of the intake air more than before. It is a high-frequency heating device that can be sent to the inner surface and can be less susceptible to the impact force of opening and closing the door of the halogen lamp terminal.

According to the first aspect of the present invention, there is provided a high frequency generator for generating a high frequency, a heating chamber for heating an object to be cooked by the high frequency, and a door arranged at the opening of the heating chamber for shutting off the high frequency. In a high-frequency heating device comprising a door glass provided on the door and transmitting light into the cooking chamber, and a blower for cooling the high-frequency generator, air blown by the blower is blown from the top surface of the heating chamber to the cooking chamber. An air guide that is guided to the heating chamber, a rod-shaped halogen lamp that is arranged in the air guide and that is parallel to the door glass, and is formed on the top surface of the heating chamber to guide the light of the halogen lamp into the heating chamber for illumination. A light-transmitting punching hole, a light-transmitting plate disposed between the halogen lamp and the light-transmitting punching hole, a reflecting plate which covers the periphery of the halogen lamp and reflects light to the heating chamber, and the air. According to the guide The guided air and a heating chamber intake punched holes to be formed in the door side of the heating chamber ceiling for sending air to said door glass, air that is blown by the blower
The halogen lamp inside the air guide.
Air that is heated by cooling the covering reflector and is heated
By the inclined surface of the air guide.
The high-frequency heating device is characterized in that it is sprayed onto the inner surface of the door glass from the piercing hole .

[0013] The invention of claim 2, wherein, in addition to claim 1, said door lateral opening formula der is, and is disposed above the halogen lamp to the door hinge side for holding said door. According to claim 2, when the door is a side-opening type, the impact force due to opening and closing the door is small in the left and right direction on the door hinge side, and the door latch side has the strongest impact force. By carefully arranging the halogen lamp on the door hinge side from the center of the top surface of the heating chamber, the impact force on the halogen lamp is weakened.

According to a third aspect of the present invention, in addition to the first aspect, an angle having a translucent plate retainer for fixing the translucent plate and a terminal supporting portion for supporting the terminal of the halogen lamp is provided, The end face of the reflector and the end face of the terminal supporting portion are arranged so as to overlap each other. According to the third aspect, a transparent plate such as glass is provided inside the cooking chamber of the halogen lamp to prevent vapor from entering from the inside of the main body, and a punching hole is provided in the ceiling of the cooking chamber to illuminate the cooking product. In addition, a reflector is installed around the halogen lamp to improve the lighting efficiency, and the end surface of the halogen lamp terminal support and the end surface of the lamp overlap to keep the lamp surface at a high temperature and prevent the blackening phenomenon of the lamp surface. , To prevent filament consumption.

According to a fourth aspect of the present invention, in addition to the first aspect, there is provided a heat radiation gap formed between the reflection plate and the air guide for performing heat radiation from the reflection plate. According to the fourth aspect, a gap is provided between the top surface of the reflector that maintains the halogen lamp at a high temperature and the inner wall of the duct, and the air sent into the air guide efficiently cools the reflector that has reached a high temperature. The generated air is blown out from the punching hole for inhaling the heating chamber, preventing water vapor from adhering to the inner surface of the door glass. Further, the halogen lamp can be prevented from rising in outer temperature due to the top surface arrangement, and the temperature of the air guide can be lowered.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the high-frequency heating apparatus of the present invention will be described below with reference to FIGS. 1 and 2.

Incidentally, FIG. 1 shows a state in which the air guide (11) is attached. The blower (1) is provided for cooling the cooking chamber, and the high frequency generator (2) and the control unit provided behind the panel operation unit are also cooled through the punching hole (15) for taking in outside air into the rear plate (14). , The inside of the main body is being cooled.

When viewed from the heating chamber opening (17) side, a reflecting plate (16) for covering the pipe heater as an upper heater is disposed on the back side of the heating chamber top surface (3), and the air guide (11) is It is arranged on the top surface of the heating chamber on the heating chamber opening (17) side of the reflection plate (16). Further, the air intake (12) into the air guide (11) is performed from an air intake port (11a) formed on the right side of the top surface of the air guide (11), and through a heating chamber air intake punching hole in the air guide (11). Exhaust (13) is made to hit the inner surface of the door glass. The air guide (1
A rectifying plate (11b) is formed in 1) to regulate the flow of air to the intake port (11a).

Next, an exploded view of the components inside the air guide is shown in FIG. A rod-shaped halogen lamp (4) for lighting the cooking chamber is positioned in parallel with the left and right direction of the heating chamber top surface (3), and a glass plate (5), which is a translucent plate, is provided inside the cooking chamber, and the heating chamber ceiling (3) is provided. Illumination punching holes (6) are provided in the surface (3). A reflector (7) that reflects the light of the halogen lamp (4) and guides it into the cooking chamber is provided around the halogen lamp (4).

The angle (8) has a structure in which the end surface (8a) of the lamp terminal indicating portion and the end surface (8a) of the reflecting plate are overlapped with each other on the angle (8) formed with the transmission plate holder and the lamp terminal supporting portion. By suppressing heat conduction from the halogen lamp (4) via the angle (8), the halogen lamp (4) can be maintained at a high temperature. By providing the glass plate (5) on the translucent punching hole (6), it is possible to protect the quartz tube of the halogen lamp from devitrification due to water vapor generated from the food in the heating chamber (9). ing.

In order to improve the lighting efficiency in the cooking chamber, a reflecting plate (7) is provided, a glass plate holder for a translucent plate and an angle (8) for holding a halogen lamp terminal are attached, and a halogen lamp (4) is attached. High temperature to maintain the filament life and the reflector (7) in the air guide (11)
The exhaust heat is used to raise the temperature to prevent fogging of the door glass.

Here, when a comparative experiment of halogen lamp lighting is conducted and the effect of the present embodiment is confirmed, as shown in Table 1 below, the condition of the embodiment is more likely to be on the bottom of the cooking chamber than the incandescent lamp installed on the top. The degree of illumination of the dishes on the placed saucer is high. In Table 1, the right side, the left side, the back side, etc. of the saucer are as viewed from the heating chamber opening (17) side.

[0023]

[Table 1]

In order to protect the rod-shaped halogen lamp (4) from the impact force when the heating chamber door is opened and closed, the mounting is made parallel to the left and right of the heating chamber top surface as shown in FIG. Regarding the impact force, a door opening / closing test was performed as shown in Table 2 below and compared. It can be seen that even if the mounting direction of the halogen lamp (4) is changed, the life is considerably improved. Further, in the present embodiment, the halogen lamp (4) is arranged on the hinge (10) side from the center of the top surface of the heating chamber, whereby the impact force on the halogen lamp (4) when the door is opened and closed is further weakened.

[0025]

[Table 2]

Next, as shown in FIG. 2, punching holes (12) are provided in the front left and right directions of the top surface (3) of the heating chamber,
On the top surface (3) of the heating chamber, the inclined surface (1) of the air guide (11)
By positioning the 1c), Motashi directionality to the air flow (12), incorporating the air from the blower side of the heating chamber ceiling right back, the warm air that has cooled the reflector halogen lamp,
Punching hole (12) formed diagonally above the door
Therefore, as shown in FIG. 1, by giving the directionality of the wind blown to the inner surface of the door, the fog on the door glass due to the steam generated by the heating of the food to be cooked is eliminated, and the inside of the cooking chamber becomes very easy to see.

For example, an incandescent lamp is attached to the right side (high frequency generator (2) side) of the heating chamber top surface (3) to determine whether the door glass is fogged or not with an air guide. The results of the comparative experiment are shown in Table 3. It was very effective and almost eliminated the problem of the view inside the cooking chamber.

[0028]

[Table 3]

Next, when the reflection plate (7) and the halogen lamp (4) are positioned on the top surface (3) of the heating chamber, and when the air guide is used on the top surface of the reflection plate by the air guide as in this embodiment. By providing a gap and reducing the exhaust heat to the door of the heating chamber, the temperature of the top surface of the cooking chamber was significantly reduced as shown in Table 4.

[0030]

[Table 4]

[0031]

The high-frequency heating device of the present invention has the following effects due to the above configuration. According to claim 1, the lighting in the cooking chamber from the top of the heating chamber is improved, and the blower is used.
The air blown by the
As the reflector that covers the lamp is cooled,
Maintaining high temperature and heating chamber to maintain filament life
To achieve a temperature drop of the surface, the exhaust heat air guide using halogen lamps covered by the reflection plate, the pressurized heat chamber top face, high by waste heat from the halogen lamp covered with reflector
The warm air heated by the heated reflector is displayed inside the door glass.
By spraying on the surface, the steam generated from the food to be cooked prevents the door glass from being fogged, thereby improving the visibility of the inside of the food to be cooked.

According to the second aspect, the halogen lamp has a drawback that it has a higher illuminance but a shorter impact resistance life than the incandescent lamp, but the impact force when the door is opened and closed while maintaining a sufficient illuminance. Can be used without any hindrance to product life setting.

According to the third aspect, heat conduction from the halogen lamp is suppressed, so that the halogen lamp can be maintained at a high temperature, the consumption of the filament of the halogen lamp can be delayed, and the life of the halogen lamp can be maintained for a long time. .

According to the fourth aspect of the present invention, it is possible to efficiently dissipate the heat of the reflecting plate, which has become hot due to the heat dissipation of the halogen lamp, by the gap between the reflecting plate and the air guide, and it can be used to prevent the fog of the door glass. At the same time, the effect of lowering the temperature of the top surface of the cooking chamber can ease the installation conditions of the high frequency heating device.

[Brief description of drawings]

FIG. 1 is a completed perspective view of a high-frequency heating device of the present invention.

FIG. 2 is an exploded view of a main part of the high frequency heating device of FIG.

FIG. 3 is a horizontal cross-sectional view (a) and a vertical cross-sectional view of a high-frequency heating device of Conventional Example 1.

FIG. 4 is a cross-sectional view of a high frequency heating device of Conventional Example 2.

FIG. 5 is a vertical cross-sectional view of a high frequency heating apparatus of Conventional Example 3.

[Explanation of symbols]

1 blower 2 High frequency generator 3 heating chamber top 4 halogen lamp 5 Translucent plate (glass plate) 11 Air guide 12 Air guide intake direction 13 Exhaust direction from air guide 14 Rear plate 15 Punching hole for intake of outside air 16 Reflector for upper heater

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI H05B 6/64 H05B 6/64 C (56) Reference JP-A-5-296460 (JP, A) JP-A-6-281166 ( JP, A) Actual development Sho 48-45249 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24C 7/02 511 F21V 33/00 F24C 7/04 F24C 15/18 H05B 6 / 64

Claims (4)

(57) [Claims] 1. A high frequency generator for generating a high frequency, a heating chamber for heating an object to be cooked by the high frequency, a door arranged at the opening of the heating chamber for shutting off the high frequency, and a cooking provided on the door. In a high-frequency heating device including a door glass that transmits light in a room and a blower that cools the high-frequency generator, an air guide that guides air blown by the blower into the cooking chamber from a top surface of the heating chamber, A rod-shaped halogen lamp arranged in the air guide and arranged in parallel with the door glass; and a light-transmitting punching hole formed on the top surface of the heating chamber for guiding the light of the halogen lamp into the heating chamber for illumination. A light-transmitting plate disposed between the halogen lamp and the light-transmitting punching hole, a reflecting plate that covers the periphery of the halogen lamp and reflects light to the heating chamber, and air guided by the air guide. The door A heating chamber intake punched holes to be formed in the door side of the heating chamber ceiling for blowing the lath, air blown by the blower, the air guide
Inside, cool the reflector that covers the halogen lamp
The heated air is heated by the tilt of the air guide.
Depending on the surface, the heating chamber intake punching hole may cause
A high-frequency heating device characterized by being sprayed on the inner surface of the door of the window . 2. The high-frequency heating device according to claim 1, wherein the door is a lateral opening type, and the halogen lamp is arranged on a door hinge side which holds the door. 3. A transparent plate holder for fixing the transparent plate,
The high frequency heating apparatus according to claim 1, further comprising an angle having a terminal support portion that supports a terminal of the halogen lamp, wherein the reflection plate end surface and the terminal support portion end surface are arranged to overlap each other. 4. The high-frequency heating device according to claim 1, further comprising a heat radiation gap formed between the reflection plate and the air guide in order to radiate heat from the reflection plate.