JP3503896B1 - High frequency heating equipment - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide a simple configuration without increasing the size of an apparatus.
Provided is a sanitary and easy-to-use high-frequency heating device that prevents water from leaking into a device of a water tank. SOLUTION: A high frequency generator for supplying high frequency to a heating chamber for accommodating an object to be heated and a steam generator for generating steam in the heating chamber are provided, and at least one of the high frequency and the steam is supplied to the heating chamber. A high-frequency heating apparatus 100 for heating an object to be heated, and a water tank 23 for supplying water to a steam generating section is detachably provided at any position on the outer surface of the high-frequency heating apparatus 100.

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 apparatus for heat-treating an object to be heated by combining high frequency heating and steam heating.

[0002]

2. Description of the Related Art Conventional high-frequency heating devices include a single-function type for high-frequency heating only, a combination range equipped with a convection heater for generating hot air in addition to high-frequency heating, and a high-frequency and steam heating chamber. A high-frequency heating device configured so that it can be supplied to the above is also under study. As a high-frequency heating device with a steam generating function, various methods have been proposed, such as a method in which a boiler is provided outside the heating chamber and steam generated from the boiler is introduced into the heating chamber. Further, in the recent high-frequency heating device, the operation panel of the high-frequency heating device is arranged on the door part and the control circuit is arranged on the bottom surface, and the entire front side of the housing is configured as the door part. A structure in which the volume of the heating chamber is expanded by reducing the thickness of the formed wall body to the minimum necessary is being adopted.

[0003]

In the above-described high-frequency heating device with a steam generating function, as a water supply system for steam generation, a system for directly supplying water to a heater heated by a heater or a system for connecting to a steam generating section is used. There is a method of supplying from a water tank that has been prepared. However, in the method of directly supplying water to the water reservoir, when water is stored in the water reservoir and heated, the water in the water reservoir evaporates and is concentrated, so-called scales such as calcium and magnesium contained in the water are deposited, It adheres to the inner surface of the heater and water reservoir. For this reason, the thermal efficiency of evaporation is lowered and it is necessary to frequently clean the water reservoir, which is not preferable in terms of hygiene. In addition, water is supplied to the water reservoir each time the object to be heated is heat-treated, and the heat treatment itself becomes troublesome,
Usability becomes poor.

In this respect, the method of supplying from the water tank is more convenient, but the method of using the water tank causes the following problems. First, if the water tank cannot be removed from the high frequency heating device, the inside of the water tank becomes unsanitary. Further, if the water tank is simply attached to the high-frequency heating device, the housing size of the high-frequency heating device will be increased, and the installation area of the device will be increased, which makes it impossible to save space. Furthermore, if a water tank is installed inside the high-frequency heating device, there is a risk of water leakage to the control circuit that should not be intruded, and the intruded water remains in the housing, which is hygienic. The problem arises.

As described above, it is preferable that the water tank is compactly housed in the high-frequency heating device in terms of the installation space, and the high-frequency heating device is in terms of water leakage from the water tank and heat propagation from the heating chamber. There is a trade-off relationship that it is preferable to provide it outside, and there has been a demand for a water tank arrangement that can solve all problems at once and is easy to use.

The present invention has been made in view of such conventional problems, and it is possible to prevent water leakage into the device of the water tank with a simple structure without increasing the size of the device, which is hygienic and convenient to use. It is an object of the present invention to provide a high-frequency heating device with good performance.

[0007]

According to a first aspect of the present invention, there is provided a high-frequency heating apparatus according to the present invention for achieving the above-mentioned object. A high-frequency heating device, comprising: a steam generation unit that generates steam by heating an evaporation dish having a place, and supplies at least one of high-frequency and steam to the heating chamber to heat-process the object to be heated. The high-frequency heating device
The entire front side of the casing of the casing is configured as a door portion, the evaporation dish is arranged in the heating chamber, and a water tank for supplying water to the evaporation dish is detachably arranged on the side surface of the heating chamber, Further, the thickness of the wall forming the heating chamber is close to a half wavelength of the high frequency, and the water tank is accommodated within the thickness of the wall.

[0008] In the high-frequency heating apparatus, high frequency heating instrumentation
A water tank was installed on the side of the heating chamber in a removable manner.
Easily removes the water tank from the high-frequency heating device
Since it can be cleaned by using a high frequency, it is hygienic and easy to use.
It can be configured as a heating device. Also, make the thickness of the water tank 1 /
For accommodating a water tank by making the thickness less than 2 wavelengths
It is not necessary to particularly thicken the wall of the heating device.
It becomes possible to store it compactly.

The high-frequency heating device according to claim 2 is an object to be covered.
High-frequency generation that supplies high-frequency waves to the heating chamber that contains the heated object
Steam by heating the part and the evaporation dish with a water reservoir
Heats the generated steam generator and the air in the heating chamber.
An indoor air heater is provided, and the high frequency generator and steam generator
Depending on at least one of the raw part and the indoor air heater
A high-frequency heating device for heat-treating the object to be heated,
Within the thickness of the wall forming the heating chamber on the side surface of the heating chamber
A water tank that is detachably installed to supply water to the evaporation dish
And between the water tank and the side wall plate of the heating chamber.
It has a cooling fan that ventilates the inside of the air layer
And

In this high frequency heating device, a water tank and
By forming multiple air layers between the heat chamber and the side wall plate,
By ventilating the inside of the air layer with a cooling fan, indoor air
Heat from the heating chamber side when heating the heater is
It is possible to prevent it from being transmitted to the black side.

A high frequency heating apparatus according to a third aspect of the present invention is characterized in that a tank case that covers the outer periphery of the water tank is provided in the wall body.

In this high-frequency heating device, since the water tank is housed in the tank case and housed in the wall body, even if water leaks from the water tank, the water is received by the tank case, and the control circuit of the high-frequency heating device, etc. Can be prevented from being directly exposed to water.

In the high frequency heating apparatus according to the present invention, the tank case is fixed to the high frequency heating apparatus side, and a tank case body is rotatably supported by the tank case body about an opening / closing shaft. A tank case door member for accommodating the water tank is provided between the main body and the main body, and door locking means for locking the tank case door member to the tank case main body and holding the same in a closed state.

In this high-frequency heating device, the water tank is housed between the tank case body and the tank case door member, and the tank case door member is locked by the door locking means, so that the high-frequency heating device is equipped with the water tank. Can be installed. Further, the water tank can be taken out by unlocking the door locking means.

In the high frequency heating apparatus according to the fifth aspect, the water tank is disposed on one side surface of the high frequency heating apparatus, and the opening / closing shaft is provided on the rear side of the side surface of the high frequency heating apparatus. It is characterized in that the door member is pulled out on the front side of the high-frequency heating device.

In this high-frequency heating device, the rotation axis of the tank case door member is provided on the rear side of the side surface of the high-frequency heating device so that the tank case door member can be opened on the front side and the water tank can be pulled out on the front side. I did it. As a result, all normal operations will be performed from the front side,
The operability and usability of the high frequency heating device are improved.

According to a sixth aspect of the present invention, in the high frequency heating apparatus, the door locking means pushes the door locking means inwardly of the high frequency heating apparatus when the tank case door member is closed.
While unlocking the tank case door member, the tank case door member is pushed inward from the open state of the tank case door member toward the inside of the high-frequency heating device to lock the tank case door member in the closed state. It is characterized by

In this high-frequency heating device, the door locking means is pushed inward of the high-frequency heating device to unlock the tank case door member, and the tank case door member is pushed back inward. The water tank can be attached / detached by a simple operation of being stopped.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a high-frequency heating apparatus according to the present invention will be described in detail below with reference to the drawings. 1 is a perspective view showing the appearance of a high-frequency heating apparatus according to the present invention, FIG. 2 is a schematic front view showing a state in which an opening / closing door of the high-frequency heating apparatus is opened, and FIG. 3 is an evaporating dish of a steam generator used in this apparatus. FIG. 4 is a perspective view showing an evaporation dish heater and a reflection plate of the steam generating part, and FIG. 5 is a sectional view of the steam generating part. The present invention is characterized in that, as shown in FIG. 1, a water tank 23 for supplying water to a steam generator provided in the high-frequency heating device 100 is detachably provided on a side surface of the high-frequency heating device 100. Although it has, here, the basic structure of the high-frequency heating device 100 according to the present invention and its operation will be described first.

The high-frequency heating apparatus 100 is shown in FIGS.
As shown in, a heating cooker that heats an object to be heated by supplying at least one of a high frequency wave (microwave) and steam to a heating chamber 11 that houses the object to be heated, and generates a high frequency wave. Magnetron 13 as a high frequency generator
And a steam generator 15 that generates steam in the heating chamber 11,
A circulation fan 17 for stirring and circulating the air in the heating chamber 11.
And a convection heater 19 as an indoor air heater for heating the air circulating in the heating chamber 11, and the heating chamber 1
An infrared sensor 21 for detecting the temperature in the heating chamber 11 through a detection hole provided on the wall surface of No. 1 and a detachable water tank 23 connected to a water supply path to the steam generating unit 15 are provided as main components. ing.

The heating chamber 11 is formed inside a box-shaped main body case (housing) 10 whose front surface is open. On the front surface of the main body case 10, there is a translucent window 25 for opening and closing the heated object takeout opening of the heating chamber 11.
An opening / closing door 25 with a is provided. The lower end of the opening / closing door 25 is hinged to the lower edge of the main body case 10, so that the upper end can be opened and closed by moving the upper end in the front-rear direction about the lower end as a rotation center. A predetermined heat insulating space is secured between the wall surfaces of the heating chamber 11 and the main body case 10, and a heat insulating material is loaded in the space as necessary. In particular, the space behind the heating chamber 11 has a circulation fan 17 and its drive motor 27.
(See FIG. 8) is a circulation fan chamber 29, and the rear wall of the heating chamber 11 is a partition plate 31 that defines the heating chamber 11 and the circulation fan chamber 29. Partition plate 3
An area 1 is provided with an intake air ventilation hole 33 for inhaling air from the heating chamber 11 side to the circulation fan chamber 29 side and a ventilation air ventilation hole 35 for blowing air from the circulation fan chamber 29 side to the heating chamber 11 side. Are provided separately. Ventilation holes 33, 35
Are formed as a large number of punch holes.

The circulation fan 17 is arranged at the center of rotation of the rectangular partition plate 31 as a center of rotation, and a rectangular annular convection heater 19 is provided in the circulation fan chamber 29 so as to surround the circulation fan 17. It is provided. Then, the intake ventilation holes 33 formed in the partition plate 31.
Is disposed in front of the circulation fan 17 and has a ventilation hole 35 for blowing air.
Are arranged along a rectangular annular convection heater 19. The circulation fan 17 is set so that the wind generated by driving flows from the front surface side of the circulation fan 17 to the rear surface side where the drive motor 27 is provided, so that the air in the heating chamber 11 circulates through the intake ventilation holes 33. The air is sucked into the center of the fan 17, passes through the vicinity of the convection heater 19 in the circulation fan chamber 29, and is blown into the heating chamber 11 through the ventilation holes 35. Therefore, with this flow,
The air in the heating chamber 11 is agitated and circulated through the circulation fan chamber 29.

The magnetron 13 is arranged in a space below the heating chamber 11, and a stirrer blade 37 is provided at a position for receiving the high frequency generated by the magnetron 13. By irradiating the stirrer blade 37 that is driven to rotate with the high frequency wave generated from the magnetron 13, the stirrer blade 37 supplies the high frequency wave to the heating chamber 11 while stirring. The magnetron 13
The stirrer blades 37 are not limited to the configuration provided on the bottom of the heating chamber 11, but may be provided on the upper surface or the side surface of the heating chamber 11, for example.

As shown in FIG. 3, the steam generating portion 15 is disposed on the lower side of the evaporating dish 39 and the evaporating dish 39 having a water reservoir recess 39a for generating steam by heating, and FIGS. Evaporating dish heater 41 for heating the evaporating dish 39 as shown in FIG.
And a reflection plate 43 having a substantially U-shaped cross section that reflects the radiant heat of the heater 41 toward the evaporation dish 39. The evaporating dish 39 is, for example, an elongated plate made of stainless steel,
The heating chamber 11 is arranged on the bottom bottom surface on the side opposite to the heated object outlet with the longitudinal direction aligned with the partition plate 31, and is provided outside the detection range of the temperature detection scan of the infrared sensor 21.
As the evaporation dish heater 41, a glass tube heater, a sheath heater, a plate heater or the like can be used.

FIG. 6 shows a high frequency heating apparatus 1 with a steam generating function.
The block diagram of the control system for controlling 00 is shown. The control system mainly includes a control unit 501 including a microprocessor, for example. The control unit 501
Mainly, the power supply unit 503, the storage unit 505, the input operation unit 50
7, display panel 509, heating unit 511, cooling fan 513 such as a control circuit, pump 5 for supplying water to the steam generating unit
Signals are exchanged with 5th grade.

The input operation section 507 includes a start switch 519 for instructing the start of heating, a changeover switch 521 for switching heating methods such as high frequency heating and steam heating, and an automatic cooking switch 523 for starting a heating program prepared in advance. Various operation switches are connected. The heating unit 511 is connected to the high frequency generator 13, the steam generator 15, the circulation fan 17, the infrared sensor 21, and the like. The high-frequency generator 13 operates in cooperation with the radio wave agitator (stirrer blade) 37, and the vapor generator 15 is connected to an evaporation dish heater 41, an indoor air heater 19 (convection heater), and the like. ing.

Next, the basic heating operation of the high-frequency heating apparatus 100 will be described with reference to the flowchart of FIG. As the operation procedure, first, the food to be heated is put in the heating chamber 11, and the opening / closing door 25 is closed. Then, the heating method, the heating temperature or the time is set by the input operation unit 507 (step 10, hereinafter abbreviated as S10), and the start switch 519 is turned on (S1).
1). Then, the heating process is automatically performed by the operation of the control unit 501 (S12).

That is, the control unit 501 starts the heating process based on the set heating method, and judges from the infrared sensor 21 or the timer whether or not the object to be heated has reached the set heating temperature / time. (S13), when the set value is reached,
Each heating source is stopped and the heating process is finished (S14). In S12, steam generation, indoor air heater, circulation fan rotation, and high frequency heating are performed individually or simultaneously.

The operation when the heating mode of "steam generation + circulation fan ON" is selected / executed in the above heating process will be described. When this mode is selected, as shown in the operation explanatory view of the high-frequency heating device 100 in FIG. 8, the evaporation dish heating heater 41 is turned on, so that the water in the evaporation dish 39 is heated and the steam S is generated. To do. The vapor S rising from the evaporating dish 39 is sucked into the central portion of the circulation fan 17 from the intake ventilation hole 33 provided in the substantially central portion of the partition plate 31, passes through the circulation fan chamber 29, and surrounds the partition plate 31. The air is blown toward the inside of the heating chamber 11 from the ventilation holes 35 provided in the section. The blown-out steam is agitated in the heating chamber 11, and is again sucked to the circulation fan chamber 29 side from the intake ventilation hole 33 in the substantially central portion of the partition plate 31. As a result, a circulation path is formed in the heating chamber 11 and the circulation fan chamber 29. It should be noted that the generated steam S is generated without providing the ventilation holes 35 below the position where the circulation fan 17 is arranged on the partition plate 31.
Is guided to the intake ventilation hole 33. Then, as the steam S circulates in the heating chamber 11 as indicated by the white arrow in the figure, the steam is sprayed onto the object to be heated M.

At this time, the temperature of the steam circulating in the heating chamber 11 can be set to a high temperature by turning on the indoor air heater 19. Therefore, so-called superheated steam is obtained, and it is possible to carry out heating cooking in which the surface of the object to be heated M is browned. When high frequency heating is performed, by turning on the magnetron 13 and rotating the stirrer blades 37, high frequency can be supplied into the heating chamber 11 while being stirred, and uniform high frequency heating processing can be performed.

Next, the operation of the basic structure of the high frequency heating apparatus 100 will be described. According to the high frequency heating device 100, since the steam is generated inside the heating chamber 11, the part that generates the steam, that is, the evaporation tray 39 is cleaned as in the case of cleaning the inside of the heating chamber 11. Easy to do. For example, in the process of steam generation, calcium, magnesium, chlorine compounds, etc. in the water may be concentrated and settled and adhered to the bottom of the evaporation dish 39 as scale, but in that case, they adhere to the surface of the evaporation dish 39. You can clean it by simply wiping off the remaining water stains with a cloth. Further, when the dirt is particularly heavy, the evaporating dish 39 can be taken out of the heating chamber 11 and washed, and the evaporating dish 39 can be easily cleaned. Further, in some cases, it can be easily replaced with a new evaporation dish 39. Therefore, the inside of the heating chamber 11 including the evaporating dish 39 can be easily cleaned, and the inside of the heating chamber can be always kept in a hygienic environment.

Further, in the high-frequency heating apparatus 100, the evaporating dish 39 is arranged on the bottom surface of the heating chamber 11 opposite to the outlet of the object to be heated M, so that the operation of taking out the object to be heated M is performed. Even when the evaporation dish 39 is at a high temperature, there is no danger of the evaporation dish 39 being touched when the object to be heated M is taken in and out, and safety is excellent. In addition, the infrared sensor 21
Evaporation tray 3 at a position substantially outside the temperature detection range
9 is provided, the evaporation dish 39 becomes hot in the heating chamber.
Even if there is, the heating temperature of the object to be heated M can be measured with high accuracy. Further, in the high-frequency heating device 100, since the evaporation dish 39 is heated by the evaporation dish heater 41 to generate the steam S, it is possible to efficiently supply the steam into the heating chamber with a simple structure, and to some extent by the heating. Since steam at a high temperature can be generated, it is possible to perform cooking by simply humidifying or cooking by heating in combination with high frequency heating while preventing drying. Further, since the radiant heat of the evaporation dish heating heater 41 is reflected by the reflection plate 43 toward the evaporation dish 39, the heat generated by the evaporation dish heating heater 41 can be efficiently used for steam generation without waste. it can.

In this high frequency heating device 100,
Since the air in the heating chamber 11 is circulated and stirred by the circulation fan 17, the steam can be evenly distributed to every corner of the heating chamber 11 when the steam is heated. Therefore, although the heating chamber 11 is filled with steam, it does not stay and the steam is spread throughout the heating chamber 11. As a result, when the temperature of the object to be heated is measured by the infrared sensor 21, the infrared sensor 21 is heating chamber 1
It is possible to reliably measure the temperature of the object to be heated M without measuring the temperature of the vapor particles inside 1, and to improve the temperature detection accuracy. As a result, the heat treatment performed with reference to the detected temperature can be properly performed without malfunction.

As a heating method, both high-frequency heating and steam heating can be performed simultaneously, either one can be performed individually, or both can be performed in a predetermined order. An appropriate heating method can be arbitrarily selected according to the distinction between frozen products and refrigerated products.
In particular, when both high-frequency heating and steam heating are used, the rate of temperature rise of the object to be heated can be increased, and efficient cooking is possible.

Further, since the air circulating in the heating chamber 11 can be heated by the indoor air heater 19 provided in the circulation fan chamber 29, the temperature of the generated steam can be freely adjusted. For example, the temperature of steam is 100 ℃
Since it is possible to set the above high temperature, it is possible to efficiently raise the temperature of the object to be heated by the superheated steam, and
It is also possible to dry the surface of the object to be heated so that the surface is browned in some cases. When the object to be heated is a frozen product, the heat capacity is efficiently transferred because of the large heat capacity of the steam, and the product can be thawed in a short time.

Next, the arrangement of the water tank 23 of the above high-frequency heating device 100, which is a characteristic part of the present invention, will be described in detail below. There are three main features of the present invention in terms of configuration. That is, (1) The water tank is detachably arranged at any position on the outer surface of the high-frequency heating device 100. (2) The water tank 23 arranged in the vicinity of the heating chamber is made less susceptible to the heat from the heating chamber. (3) Even if there is water leakage from the water tank 23,
The high-frequency heating device 100 has a waterproof measure that is not affected by water leakage.

First, a detailed description will be given from the point that the first water tank 23 is detachably arranged. FIG. 9 shows an exploded perspective view of a structure in which a water tank is arranged on the side surface of the high-frequency heating device.
As will be described later in detail, a side surface heat insulating plate 51 is fixedly provided on a side surface of the high-frequency heating device 100 with a predetermined space (first space) opened from the side wall plate inside the heating chamber to the outside of the heating device 100. The tank case body 5 is attached to the side heat insulating plate 51.
3 is provided in the side heat insulating plate 51 with a predetermined space (second space) provided therebetween. A pump 55 for water supply is attached to the tank case body 53. A tank case door member 57 is rotatably supported by the tank case body 53 so as to be openable and closable around an opening / closing shaft, and the water tank 2 is provided between the tank case body 53 and the tank case door member 57.
3 is placed and stored on the tank case door member 57.
Further, a door frame 59 is attached to the outer periphery of the tank case door member 57. The tank case door member 5 is provided between the water tank 23 and the inside of the door frame 59 on the front side of the heating device 100.
An opening / closing button (door locking means) 61 for opening / closing 7 is provided. The open / close button 61 has a locking function of a locking member (not shown) for closing the tank case body 53 and the tank case door member 57, and when the locking is released, the tank case door member 57 is An elastic member (not shown) biased in the opening direction of the door causes the heating device 100 to jump out. By assembling these members, the water tank 23 has the external shape shown in FIG. 1 housed inside the high-frequency heating device 100.

Next, FIG. 10 shows a procedure for taking out the water tank 23 from the high-frequency heating apparatus 100. Figure 10 (a)
As shown in FIG. 10, by pressing the open / close button 61 provided on the front side of the side surface of the high-frequency heating device 100 toward the inside of the heating device 100, as shown in FIG. The water tank 23 placed on this opens outward from the side surface of the heating device 100. And FIG.
As shown in (c), the water tank 23 is taken out by pulling out the water tank 23 to the front side of the heating device 100.

When the water tank 23 is to be housed, the water tank 23 is slid and inserted into the tank case door member 57 with the tank case door member 57 open, contrary to the above procedure. Insert to the back. Then, by pushing the tank case door member 57 back toward the inside of the heating device 100, the tank case door member 57 is locked by the locking member (not shown) in the closed state of the door.

As shown in the enlarged perspective view of FIG. 11, the water tank 23 has a flat rectangular parallelepiped shape and a tank body 63.
, The water intake cylinder 65 and the water supply port 67 are fixed, and the tank body 63 is fixed.
It consists of a removable tank lid 69. Tank body 63
A projection (or groove) 63a for preventing slipping when gripping the water tank 23 is formed at one side end of the one side, and a drawer knob 69a used when taking out the tank is provided on the upper surface of the tank lid 69. Are formed to facilitate the attachment / detachment operation of the water tank 23. The water tank 23 is made of a material having at least a part of the side surface of the tank body 63 having a light-transmitting property so that the liquid level can be confirmed, and at any part of the tank body 63 exposed when the heating device 100 is attached, A scale 71 indicating the liquid level of water in the tank is provided. As a result, the remaining amount of water in the water tank 23 is
3 can be easily read from the scale 71 even when the water tank 23 is taken out alone or when the water tank 23 is attached to the heating device 100. In addition, the scale 71 is attached to the tank body 63.
If it is integrally formed by injection molding, it can be attached at low cost. In addition to the scale 71 being provided on the tank body 63, the scale 71 is provided on the heating device 100 side (for example, the surface 53a on the mounting side of the tank case body 53, etc. (see FIG. 21)) so that the water tank 23 can be installed. The liquid level may be displayed through 23. Specifically, when the water tank 23 is attached to the heating device 100, it faces the surface of the water tank 23 on the heating chamber 11 side, for example, on the heating device 100 side, it is easy to visually recognize a fluorescent color or the like. For example, a back plate or a back plate with a scale in which black scales are marked is attached to a base of fluorescent color or the like.
According to this, the back plate or the back plate with the scale is attached to the heating device 1
It only needs to be attached to the 00 side, and manufacturing and product costs can be reduced. Further, since the water in the water tank 23 looks colored from the outside by providing the back plate, the visibility of the liquid level is remarkably improved, and the configuration is excellent in usability and aesthetics. The back plate may be a seal body in which a base and scale are printed and an adhesive is applied to the back surface, or a plate body made of plastic or metal.

The liquid level of the water tank 23 can be easily confirmed even when the water tank 23 is attached to the heating device 100 when viewed from directly in front of the device. As shown in FIG. 12 which is a perspective view of the side end on the take-out side of the water tank, and FIG. 13 which is a sectional view taken along the line AA of FIG. 12, a prism 62 having a triangular prism shape is provided as a reflector on the side surface of the tank body 63 of the water tank 23. The liquid level of water in the water tank 23 is projected on the prism 62 as the color of the back plate 64. With this configuration, in the area of the prism 62 corresponding to the liquid level of the water in the water tank 23 or less, the rear plate 6 having a fluorescent color is used.
The color No. 4 is displayed on the near side in the direction of the arrow in the figure, while in the region higher than the liquid level, there is no fluorescent color display and the state is semitransparent. Therefore, when the water tank 23 is viewed from the side, the liquid level of the water in the water tank 23 is displayed on the prism 62 as the color of the back plate 64, as schematically shown in FIG. As a result, the heating device 1 shown in FIG.
As shown in the front view of the whole 00, by the prism 62 provided so as to project outward from the water tank 23, the liquid level of the water in the water tank 23 can be increased even from directly in front of the heating device 100.
Although it is an inexpensive structure, it can be confirmed with good visibility.

As the above reflector, the prism 6 is used.
Even if a mirror is used instead of 2, the same effect can be obtained.
FIG. 16 shows an example of the configuration using a mirror. Water tank 2
The mirror 66 provided on the side surface of the tank body 63 of No. 3 with the reflecting surface inclined to the water tank 23 side is fixed to the tank body 63 by a mounting tool (not shown), and the liquid level of the water in the water tank 23 is set on the back plate. The 64 colors are reflected and displayed in the front direction of the heating device 100 with high reflectance. With this configuration, the liquid level display similar to that in FIG. 15 can be performed.

Further, in the water tank 23, since the tank body 63 and the tank lid 69 can be separated from each other, the inside of the tank is easy to clean and has a sanitary and convenient structure. In addition, since the thickness Wt of the water tank 23 is set to be thin, it is possible to prevent the thickness of the water tank accommodated in the heating device 100 from increasing.

Generally, in a high-frequency heating device, a groove called a choke groove is formed on the side of the open / close door so as to prevent electric wave leakage from the open / close door. FIG. 12 shows a horizontal sectional view showing the choke groove of the opening / closing door. If a groove that ends at a half wavelength (the wavelength λ of the high frequency used is about 12 cm) from the entrance of the joint of the opening / closing door 25 (point C) is provided (point C), at the point B of quarter wavelength Since the magnetic field becomes zero, the electric field travels only in the direction of the choke groove, and the electric field is reflected at the point C, so that a wave cannot be formed and it cannot proceed forward. In addition, since there is actually no potential difference between points A and C, radio waves are sealed at the entrance, preventing radio wave leakage.

Therefore, the thickness Wc of the wall forming the heating chamber 11 of the heating device 100 needs to be at least ½ wavelength or more, but due to the demand for reducing the installation area of the heating device 100,
The wall is designed to have a thickness close to ½ wavelength in order to make the wall as thin as possible. To accommodate the water tank 23 within the thickness Wc of the wall body, the thickness Wt of the water tank 23 itself is at least 1.
The thickness needs to be equal to or less than / 2 wavelength. In this way, by setting the thickness Wt of the water tank 23 to be equal to or less than ½ wavelength, it is not necessary to particularly thicken the wall of the heating device 100 for housing the water tank 23, and the water tank 23 can be made more compact. It becomes possible to accommodate.

Further, this water tank 23 is used for the heating device 10.
Even when the tank lid 69 is in the half-opened state when it is attached to the tank 0, the tank lid 69 is moved by the insertion operation.
Is automatically engaged. The engagement operation of the tank lid 69 will be described with reference to FIGS. Here, FIG. 18 is an enlarged perspective view of the tank case door member, FIG. 19 is an explanatory view showing a state in which the water tank is inserted into the tank case door member shown in FIG. 18, and FIG. It is explanatory drawing which shows the engagement operation of the tank cover 69.

The tank case door member 57 shown in FIG.
Tank case body 5 with one surface of a flat rectangular parallelepiped opened
3 (see FIG. 9) is configured to cover the open surface and accommodate the water tank 23 between it and the tank case body 53. That is, the water tank 23 is placed on the bottom surface 57a of the tank case door member 57, and the upper guide 57b,
It is accommodated by being inserted in the direction of the arrow in the drawing along the lower guide 57c. The water tank 23 is provided with ribs (side guides) 58 protruding from the side surface of the tank case door member 57.
The horizontal positioning is performed by making sliding contact with.

At this time, as shown in FIG. 19, the upper guide 57b of the tank case door member 57 is a plate-shaped regulating guide 6 which is erected on the upper surface of the tank lid 69 of the water tank 23.
By engaging with 8, the insertion position of the water tank 23 is regulated. This regulation operation will be described with reference to FIG. Figure 20
Is a top view (a1), (b1), (c1) of the inserting operation of the water tank and the engaging operation of the tank lid, and side views (a2), (a2) viewed in the tank inserting direction corresponding to these respectively. b
It is explanatory drawing which shows 2) and (c2).

First, as shown in FIGS. 20 (a1) and 20 (a2), when the water tank 23 is inserted into the tank case door member 57 while the tank lid 69 is in a half-open state, one end surface of the tank lid 69 is inserted. Will slide along the rib 58. Then, as shown in FIGS. 20 (b1) and (b2), when the water tank 23 is further inserted, the regulating guide 68 of the tank lid 69 starts to contact the upper guide 57b of the tank case door member 57, The end surface of the tank lid 69 is pressed against the rib 58. As a result, the water tank 2
3 is positioned in the horizontal direction orthogonal to the insertion direction. Next, as shown in FIGS. 20 (c1) and (c2), the regulating guide 68 of the tank lid 69 is moved to the tank case door member 57.
When it is continuously inserted while slidingly contacting the upper guide 57b of
The lower surface of the upper guide 57b rides on the side portion 69a of the regulation guide 68 of the tank lid 69, and the tank lid 69 is engaged with the tank body 63 and closed.

These regulating guide 68 and upper guide 57
The water tank 23 is positioned in a direction orthogonal to the insertion direction by the b, the side portion 69a, and the facing rib 58, and is also regulated in the vertical direction, so that even if the tank lid 69 is forgotten to be closed, The lid can be surely closed by the inserting operation of the tank 23.

As described above, the water tank 23 is connected to the heating device 1
Since it is detachably arranged from 00, water can be easily exchanged and hygienic water can be supplied. Further, by disposing the water tank 23 on the side surface of the heating device 100, the heating operation from the front side of the heating device 100 is not affected at all, and the attachment / detachment operation of the water tank 23 is performed by the tank case door member. The rotating shaft of 57 is a heating device 100.
Since the tank case door member 57 is opened on the front side by providing it on the back side, the operation can be performed from the front side by the insertion / removal operation with good operability. The water tank 23 may be provided on one side surface of the heating device as described above, or may be provided on the opposite side surface or on any of the upper surface and the lower surface. Even in that case, the water tank 23 can be pulled out from the wall body to the outside of the heating device 100, and then can be inserted / removed to / from the front side to perform a detaching operation with good operability.

Further, by compactly housing the water tank 23 in the wall of the heating device 100, it is possible to prevent the installation area from increasing without increasing the housing size of the heating device 100.

Next, a description will be given of the second feature that the water tank 23 disposed in the vicinity of the heating chamber is made less susceptible to the heat from the heating chamber. In order to explain this feature, the members relating to the accommodation of the water tank 23 will be described in more detail. FIG. 21 is an enlarged perspective view of the tank case body, FIG.
21 shows a P ₁ direction arrow view of FIG. 21, and FIG. 23 shows a P ₂ direction arrow view of FIG. The tank case main body 53 has a box shape in which one surface of a flat rectangular parallelepiped is opened, and has a pump area 73 for accommodating the pump 55 and the like, a water tank area 75 for accommodating the water tank 23, and a tank case door. And a locking member region 77 in which a locking member that locks the member 57 is accommodated. The surface 53a on the mounting side of the tank case body 53 is
The side wall heat insulating plate 51 (see FIG. 9) provided along the wall surface of the heating chamber of the heating device 100 is screwed to a predetermined space.

The bottom surface 53 of the tank case body 53
In b, ridges 79 and 80 that partition the bottom surface 53b in the water tank region 75 are erected substantially vertically, and a side end surface side opposite to the mounting surface 53a side of the bottom surface 53b. It is provided with a plurality of drainage grooves 81 formed toward. Then, as shown in FIG. 22, a lower opening hole 83 is provided in the pump area 73 of the bottom surface 83b, and the water tank area 7 is provided.
5 also has lower openings 84 and 85. In the vertical direction of the lower opening holes 83, 84, 85, on the upper side in FIG. 21, there is provided a waterproof projection 86 having a gap and covering the lower opening hole 85, with the mounting side surface 53a as the base end. It is projected toward the inside of 53. The waterproof protrusion 86 extends from the upper position of the lower opening holes 83, 84, 85 to the position of the ridges 79, 80.

On the other hand, on the upper part of the tank case body 53,
As shown in FIG. 23, an upper opening hole 89 is provided in the upper surface 83c of the pump area 73, an upper opening hole 90 is provided in the upper surface 83d of the water tank area 75, and an upper opening hole 91 is provided in the upper surface 83e. Then, the upper surfaces 83c, 83 are provided at the edge portions of the upper opening holes 89, 90, 91 opposite to the mounting surface 53a.
Water droplets adhering to d and 83e are upper opening holes 89, 90 and 9
The rib 93 for damming up the upper opening holes 89, 90, 9 so as not to flow into the tank case body 53 from the inside 1.
1 is formed so as to project over the entire area of the formed upper surface.

The tank case door member 57 shown in FIG. 18 is rotatably supported on the rotation shaft L of the tank case body 53.

Here, FIG. 24 is a perspective view showing a structure in which the tank case door member is pivotally supported by the rotary shaft L of the tank case main body and the water tank is housed between the both members, and FIG. The side view showing the appearance of attaching the three-dimensional object to the side heat insulating plate of the high-frequency heating device is shown. As shown in FIGS. 24 and 25, a detection switch 95 for detecting attachment of the water tank 23 and a joint portion 97 connected to the water supply port 67 of the water tank 23 are attached to the tank case body 53. . The water in the water tank 23 is sucked and discharged through the water supply pipe 98 by driving the pump 55, and is supplied to the evaporation dish on the bottom surface of the heating chamber by a predetermined amount through the large diameter water supply pipe 99. The large-diameter water supply pipe 99 is set to have a larger pipe inner diameter than the water supply pipe 98, and the pump 5 is driven by the atmospheric pressure.
It prevents the water supplied by No. 5 from remaining in the pipe. Therefore, the liquid level in the water supply pipe 98 becomes the height of the connection portion 103 with the large diameter water supply pipe 99, and the water pressure in the water tank 23 allows the water to flow out naturally without the drive of the pump 55. To prevent.

Next, a method of cooling the water tank 23 will be described. FIG. 26 is an explanatory view showing how the air blown from the lower side of the heating chamber of the high-frequency heating device is guided to the side surface side, FIG.
FIG. 4 is a perspective view schematically showing a path of air blown by the tank case body. A schematic cooling air path around the water tank 23 will be described with reference to FIGS. 26 and 27. FIG. 26
As shown in, a control circuit in which electronic components such as the magnetron 13 are arranged is mounted on the bottom surface of the high-frequency heating device 100, and a cooling fan 111 for cooling these electronic components is also arranged on the bottom surface. ing. The air blown from the cooling fan 111 passes through a cooling fin (not shown) of the magnetron 13 and flows from the bottom surface side to the side surface side as shown by an arrow F ₁ in the drawing. Then, the wind from the cooling fan 111 is guided upward by the collecting duct 113 fixed to the side heat insulating plate 51 and having an opening on the lower side. AtsumariMuko duct 113, details will be described later, and supplies to the outside of the side surface heat insulating plate 51 attached in a tank case body 53 as shown a portion of a wind which is introduced by the arrow F _2, also other wind Is supplied to the gap between the side wall of the side heat insulating plate 51 and the side wall plate of the heating chamber, as indicated by arrow F ₃ .

The wind of the arrow F ₂ supplied to the outside of the side heat insulating plate 51 by the collecting duct 113 is, as shown in FIG. 27, the lower opening holes 83, 84, 8 of the tank case body 53.
5 is divided into F _2a , F _2b , and F _2c , introduced into the tank case body 53, and exhausted from the upper opening holes 89, 90, 91, respectively.

The wind of the arrow F ₂ will be described in more detail. 28 is an enlarged perspective view of a portion of the collecting duct 113, and FIG. 29 is a P ₃ direction arrow view in which the collecting duct of FIG. 28 is omitted. As shown in FIG. 28, the wind of the arrow F ₁ introduced into the collecting duct 113 is supplied to the pump region by the lower opening hole 83 of the tank case main body 53, and is indicated by the arrow F _2a.
And the winds indicated by arrows F _2b and F _2c supplied to the water tank region by the lower opening holes 84 and 85.
In addition, the air supply amounts of the pump region and the water tank region are made substantially equal to each other.

Further, as shown in FIG. 29, the lower opening 8
3, 84, 85 are the side heat insulating plates 5 along the arrangement direction.
One opening 115 is formed, and the air shown by arrow F ₃ is supplied from this opening 115 to the gap between the heating chamber side wall plate inside the side heat insulating plate 51.

Here, the flow of air and the action of heat insulation will be described for each of the pump region and the water tank region. 30 is a sectional view taken along line R ₁ -R ₁ of FIG. 25, FIG. 31 is a partially enlarged view of FIG. 30, FIG. 32 is a sectional view showing a configuration in which a lower inclined surface of the tank case body is extended, and FIG. R ₂ -R ₂
A cross section, FIG. 34 is a partially enlarged view of FIG. First, regarding the pump area, the pump 55 has particularly poor thermal strength,
The limit temperature is 70 ° C in the non-operating state and 65 ° C in the operating state. However, the heating chamber of the high frequency heating device 100 is
When heated to about 250 ° C. by the convection heater, the pump area is heated up to about 80 to 90 ° C. The water tank region is also the same, and since the water tank itself is formed of a resin material such as plastic, it may be deformed when exposed to a high temperature atmosphere.

Therefore, in the configuration of the high-frequency heating device 100 of the present invention, the pump 55, the water tank 23 and the heating chamber side wall plate 1 are provided.
17, a plurality of air layers are formed, and the air inside the air layers is ventilated by a cooling fan so that the heat from the heating chamber 11 side when the convection heater 19 is heated is transferred to the pump 55 and the water tank 23 side. It is prevented as much as possible from being transmitted to.

Specifically, as shown in FIG. 30, the magnetron 13 arranged on the bottom side of the high frequency heating apparatus 100.
The air blown from the cooling fan 111 that cools the air passes through the heat dissipation plate 13a of the magnetron 13 and is directed to the collecting duct 113 by converting the direction of the flow upward below the collecting duct 113. In the collecting duct 113, as shown in an enlarged manner in FIG. 31, the introduced air is provided with a gap (first space) between the side heat insulating plate 51 and the heating chamber side wall plate 117, and a mounting side of the tank case body 53. Between the surface 53a of the
Space). Furthermore, the tank case body 5
Gap between the surface 53a on the mounting side of No. 3 and the heat insulating plate for pump 119 interposed between the pump 55 (third space)
It also supplies wind. The pump heat insulating plate 119 is made of a metal plate and blocks radiant heat from the heating chamber side.

In this way, the pump 55 and the heating chamber side wall plate 1
First, second, and third spaces are formed between the heating chamber side wall plate 117, the heating chamber side wall plate 117, the side wall heat insulating plate 51, and the tank case body 53.
a and the heat insulating plate 119 for the pump are cooled, and the retention of air in each space is prevented. This improves the heat insulating effect of each space, and as a result, the temperature rise of the pump 55 due to the heat from the heating chamber 11 side can be suppressed. It has been confirmed that when the heating chamber 11 is actually heated to about 250 ° C. by the convection heater, the pump region is about 63 ° C., and the temperature rise can be suppressed below the operation limit temperature of the pump 55.

On the other hand, when high-frequency heating is performed, the heating chamber 11 itself does not reach a particularly high temperature due to the nature of the heating system, and the heat from the heating chamber side wall plate 117 does not significantly contribute to the temperature rise of the pump 55. Absent. However, high power type magnetron 13
When using, the magnetron 1
The temperature rise of 3 itself becomes large, the temperature of the air passing through the heat dissipation plate 13a becomes high, and if this air is blown to the pump 55, the temperature of the pump 55 may rise above the limit temperature. Therefore, such a high output type magnetron 13
32, by extending the lower inclined surface 53c of the tank case body 53 as shown in FIG. 32, the third space described above is closed. As a result, the pump 55 and the pump heat insulating plate 119 are not directly exposed to the wind, and the temperature rise of the pump 55 is prevented.

The air flowing through the first space is heated by the side wall plate 1 of the heating chamber.
The air flows from the opening 121 (see FIG. 2) of 17 into the heating chamber 11 and becomes the air for ventilating the heating chamber 11. Further, the wind flowing through the second space (when the wind flows through the third space, joins with the wind in the second space above the tank case main body 53), the wind of the high frequency heating device 100 Vent 123 (Fig. 1
(Refer to FIG. 3), a part of which is exhausted from the high frequency heating device 10.
The air is exhausted from a ventilation port (not shown) provided on the back side of 0.

Further, regarding the water tank region,
As shown in FIG. 33 and FIG. 34, it is basically the same as the pump region, and the gap (first space) between the heating chamber side wall plate 117 and the side heat insulating plate 51, the side heat insulating plate 51 and the tank case body. A gap between the surface 53a on the mounting side of 53 (second
Space), a gap (fourth space) between the mounting side surface 53a and the water tank 23 is formed, and the temperature of the water tank 23 and its surroundings is raised by the air supplied to each space in the same manner as described above. Is suppressed.

Further, the collecting duct 113 for introducing the air blown out from the cooling fan 111 to the side surface side of the high-frequency heating apparatus 100 has a side surface in the area including the lower side of the installation position of the pump 55. 1 for the depth direction of
It is provided unevenly in some places. As a result, the water tank 2
The wind flowing on the 3 side is supplied intensively, and the force of the wind becomes stronger. Therefore, as compared with the case where the wind is uniformly supplied in the depth direction, the wind can be efficiently applied and the stagnation of the wind can be eliminated.

Next, a description will be given of the third feature of the high-frequency heating device, which is waterproof because it is not affected by water leakage. If there is water leakage from the water tank 23, the control circuit is arranged on the bottom surface side of the high-frequency heating device 100, so it is necessary to prevent water from flowing into the control circuit. Therefore, first of all, when the water tank 23 is mounted on the high-frequency heating device 100, the water tank 23 is provided inside the wall of the high-frequency heating device 100 that houses a tank case that covers the outer periphery of the water tank 23. This tank case is composed of the tank case body 53 and the tank case door member 57 as described above. By covering the water tank 23 with the tank case, it is possible to prevent water from leaking directly from the water tank 23 into the housing, and the water leakage force does not expand the water leakage range.

Secondly, the bottom surface 53b of the tank case body 53 is provided with measures against water leakage from the water tank 23. As shown in FIG. 21 and FIG. 34, the lower opening hole 84 (85 is also the same) of the bottom surface 53b of the tank case body 53.
Above the water tank 23 side, the water that has passed down the tank case door member 57 from the water tank 23 side is prevented from directly flowing down to the lower opening hole 84 by the waterproof projection 86. In other words, leakage from Figure 34 in which Q ₁ is is caught once by Q _2, falls into Q ₄ flows in Q _3,
It will flow in the Q ₅ direction. The water heading in the Q5 direction is
As shown in FIG. 33, the joint portion 125 with the door frame body 59 flows out to the outside of the door frame body 59, or the lower gap 12 of the door frame body 59.
It falls to 7 and falls outside the housing. Therefore, the leaked water from the water tank 23 does not drop from the lower opening 84 to the control circuit side.

The bottom surface 53b of the tank case body 53
21 and 34, the lower opening 8
Ribs 129 are provided so as to prevent the water that has dropped on the bottom surface 53b from falling against the surfaces No. 4 and 85. This prevents the water flowing on the bottom surface 53b from flowing into the lower opening holes 84 and 85.

Further, the bottom surface 53 of the tank case body 53
The b is provided with a drainage groove 81 formed toward the side end surface of the tank case body 53 on the side opposite to the heating chamber side. This prevents water droplets from accumulating on the bottom surface 53b of the tank case body 53, so that the water droplets on the bottom surface 53b smoothly move and flow down. Further, the tank case body 53 is provided with a ridge that stands from the bottom surface 53b and partitions the bottom surface 53b. As a result, it is possible to prevent water droplets on the bottom surface 53b from moving to other partitioned areas on the bottom surface 53, and even if there is water leakage, it is possible to prevent the entire bottom surface 53b from being immersed in water.

Thirdly, waterproofing measures are taken by dew condensation from the upper opening holes 89, 90, 9 on the upper surface of the tank case body 53. Depending on the heating content of the high-frequency heating device 100, warm air or air containing a large amount of water may flow around the tank case body 53. At this time,
Water in the air may condense on the tank case body 53, causing water drops to flow into the tank case body 53 from the upper opening holes 89, 90, 91. Therefore,
As shown in FIG. 3, continuous ribs 93 are formed along the extending direction of the upper opening holes 89, 90, 91. The ribs 93 prevent water droplets that have condensed on the upper surface of the tank case body 53 from directly flowing into the upper opening holes 89, 90, 91.

The high-frequency heating device described above has the following features. (1) The maximum thickness of the water tank is 1
/ 2 wavelength or less. (2) At least a part of the side surface of the water tank is made of a light transmissive material. (3) A fluorescent-colored back plate is provided so as to face the surface of the water tank on the heating chamber side in a state where the water tank is attached to the high-frequency heating device. (4) A scale indicating the liquid level of the water tank is formed on the back plate. (5) The water tank was provided with a scale indicating the liquid level. (6) A reflector for displaying the liquid level of the water tank on the front side of the high-frequency heating device is provided so as to protrude from the outer surface of the water tank. (7) The reflector is a triangular prism. (8) The reflector is a mirror having a reflecting surface inclined toward the water tank. (9) A plate-shaped regulating guide that is erected on the upper surface of the water tank along the insertion direction of the water tank, and one side of the water tank on the side of the high-frequency heating device that houses the water tank. A lateral guide that extends in the insertion direction and abuts the side surface of the water tank, and abuts on a surface of the regulating guide that is hung from above the water tank and that is opposite to the lateral guide side. And a plate-shaped upper guide, and the upper guide slides on the regulating guide along with the insertion operation of the water tank along the side guide. (10) The upper guide is formed so as to hang down to a position at the height of the upper surface of the water tank. (11) A pump for supplying water from the water tank to the steam generating unit is provided in the tank case body, and a heat insulating plate for a pump is interposed between the pump and the tank case body on the heating chamber side. . (12) A side wall insulating plate is fixed to the side wall plate of the heating chamber outwardly with a first space, and a second space is opened outward from the side wall plate to fix the tank case. Then, a blower fan that supplies wind to at least the first space and the second space is provided. (13) The tank case is rotatably supported by a tank case main body fixed to the high-frequency heating device side and an opening / closing shaft around the tank case main body, and a water tank is accommodated between the tank case main body and the tank case main body. A tank case door member and a door locking means for locking the tank case door member to the tank case body to hold the tank case body in a closed state, wherein the second space is the side heat insulating plate and the tank case body. The air from the blower fan is supplied to a third space formed between the tank case main body and the pump heat insulating plate. (14) The air from the blower fan is supplied to the fourth space formed between the tank case body and the water tank. (15) The blower fan is a cooling fan that cools the magnetron of the high-frequency heating unit. (16) The blower fan is arranged below the heating chamber of the high-frequency heating device, and at least the duct blower port for introducing the air blown out from the blower fan to the side surface of the high-frequency heating device is provided in the pump. It is provided in a region including the lower side of the arrangement position so as to be unevenly distributed in the depth direction of the side surface. (17) On the heating chamber side of the bottom surface of the tank case body,
While forming an opening hole for ventilation that opens in the vertical direction,
A drip-proof projection that covers the opening with a gap in the vertical direction is provided on the vertical wall on the heating chamber side near the bottom of the tank case main body so as to project toward the inside of the tank case. (18) A groove for draining water is formed on the bottom surface of the tank case body toward the side end surface of the tank case body opposite to the heating chamber side vertical wall. (19) A rib is provided upright from the bottom surface of the tank case body to partition the bottom surface.

[0076]

As described above in detail, according to the high frequency heating apparatus of the present invention, the water leakage into the apparatus of the water tank is prevented with a simple structure without increasing the size of the apparatus, It is hygienic and easy to use.

[Brief description of drawings]

FIG. 1 is an external perspective view of a high-frequency heating device according to the present invention.

FIG. 2 is a schematic front view showing a state in which an opening / closing door of the high-frequency heating device is opened.

FIG. 3 is a perspective view showing an evaporation dish of a steam generator used in the high frequency heating device.

FIG. 4 is a perspective view showing an evaporation dish heater and a reflection plate of a steam generation unit.

FIG. 5 is a cross-sectional view of a steam generator.

FIG. 6 is a block diagram of a control system for controlling the high-frequency heating device with a steam generating function.

FIG. 7 is a flowchart illustrating a basic heating operation of the high frequency heating device.

FIG. 8 is an operation explanatory view of the high frequency heating device.

FIG. 9 is an exploded perspective view of a configuration in which a water tank is arranged on the side surface of the high-frequency heating device.

FIG. 10 is an explanatory view showing a procedure for taking out the water tank from the high frequency heating device.

FIG. 11 is an enlarged perspective view of a water tank.

FIG. 12 is a perspective view of a side end portion on the take-out side of the water tank.

13 is a cross-sectional view taken along the line AA of FIG.

FIG. 14 is a schematic side view when viewed from the side of the water tank.

FIG. 15 is a front view of the entire heating device.

FIG. 16 is a cross-sectional view showing an example in which a mirror is inclined and provided on the side surface of the tank body of the water tank.

FIG. 17 is a horizontal sectional view showing a choke groove of the opening / closing door.

FIG. 18 is an enlarged perspective view of a tank case door member.

FIG. 19 is an explanatory view showing a state where a water tank is inserted into the tank case door member shown in FIG. 18.

FIG. 20 is an explanatory view showing an engaging operation of the tank lid body accompanying the inserting operation of the water tank.

FIG. 21 is an enlarged perspective view of the tank case body.

22 is a view on arrow P ₁ in FIG.

23 is a P ₂ direction arrow view of FIG. 21. FIG.

FIG. 24 is a perspective view showing a configuration in which a tank case door member is pivotally supported by a rotating shaft of a tank case body and a water tank is housed between the two members.

FIG. 25 is a side view showing a state where the assembly shown in FIG. 24 is attached to a side heat insulating plate of a high frequency heating device.

FIG. 26 is an explanatory diagram showing a state in which the air blown from the lower side of the heating chamber of the high-frequency heating device is guided to the side surface side.

FIG. 27 is a perspective view schematically showing a path of air blown by the tank case body.

FIG. 28 is an enlarged perspective view of a portion of the collecting duct.

29 is a P ₃ direction arrow view in which the collecting duct of FIG. 28 is omitted.

FIG. 30 is a cross-sectional view showing the R ₁ -R ₁ cross section in FIG. 25.

FIG. 31 is a partially enlarged view of FIG. 30.

FIG. 32 is a cross-sectional view showing the configuration when the lower inclined surface of the tank case body is extended.

FIG. 33 is a cross-sectional view showing the R ₂ -R ₂ cross section of FIG. 25.

34 is a partially enlarged view of FIG. 30. FIG.

[Explanation of symbols]

11 heating chamber 13 magnetron 15 Steam generator 17 Circulation fan 19 Convection heater 21 infrared sensor 23 Water tank 25 open / close door 39 Evaporating dish 41 Evaporating dish heater 43 Reflector 51 Side insulation board 53 Tank case body 55 pumps 57 Tank case door member 58 Side guide 57b Upper guide 59 Door frame 61 Open / close button 62 Prism (Reflector) 63 Tank body 65 water intake 66 Mirror (Reflector) 67 Water inlet 68 Regulatory Guide 69 Tank lid 71 scale 73 Pump area 75 Water tank area 77 Locking member area 79,80 ridges 81 groove 83, 84, 85 Lower openings 86 Waterproof projection 89, 90, 91 Upper opening hole 93 ribs 95 detection switch 97 Joint section 111 cooling fan 113 Collecting duct 117 Heating chamber side wall plate 119 Heat insulating plate for pump 121 opening 123 Vent 125 joint 127 Lower gap 129 ribs

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshifumi Kamiya 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP 10-78224 (JP, A) JP 2001-351288 (JP, A) Actual development Sho 54-178661 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24C 7/02 F24C 7/02 501 F22B 1/28 F24C 1/00 310 H05B 11/00

Claims (6)

(57) [Claims] 1. A high-frequency generator for supplying a high-frequency wave to a heating chamber for containing an object to be heated, and a steam generator for generating steam by heating an evaporation dish having a water reservoir recess. A high-frequency heating device that heats the object to be heated by supplying at least one of a high-frequency wave and steam, wherein the entire front side of the housing of the high-frequency heating device serves as a door portion.
The evaporating dish is disposed in the heating chamber, a water tank for supplying water to the evaporating dish is removably disposed on the side surface of the heating chamber, and a wall body forming the heating chamber is formed. Thickness is 1/2 of the high frequency
A high-frequency heating device having a thickness close to the wavelength and containing a water tank within the thickness of this wall. 2. A high-frequency generator that supplies high-frequency waves to a heating chamber that contains an object to be heated, a steam generator that generates steam by heating an evaporation dish having a water reservoir recess, and air in the heating chamber. An indoor air heating heater for heating, which is a high-frequency heating device for heating the object to be heated by at least one of the high-frequency generating unit, the steam generating unit, and the indoor air heating heater, wherein a side surface of the heating chamber is provided. Ventilation into an air layer formed between the water tank and the side wall plate of the heating chamber, which is detachably provided within the thickness of the wall forming the heating chamber and supplies water to the evaporation dish. A high-frequency heating device, comprising: 3. The high-frequency heating device according to claim 1, wherein a tank case that covers the outer periphery of the water tank is provided within the thickness of the wall forming the heating chamber. 4. A tank case main body fixed to the high-frequency heating device side, and the tank case is rotatably supported by the tank case main body so as to be openable and closable around an opening / closing shaft, and a water tank is provided between the tank case main body and the tank case main body. The high-frequency heating apparatus according to claim 3, further comprising: a tank case door member that accommodates the door, and a door locking unit that locks the tank case door member to the tank case body and holds the door closed. 5. The water tank is disposed on one side surface of the high-frequency heating device, and the opening / closing shaft is provided on the rear side of the side surface of the high-frequency heating device, so that the tank case door member is provided on the front surface of the high-frequency heating device. The high-frequency heating device according to claim 4, wherein the pull-out operation is performed on the side. 6. The door locking means releases the locking with the tank case door member by pushing the door locking means inwardly of the high frequency heating device in a closed state of the tank case door member. On the other hand, the tank case door member is locked in the closed state by pushing the tank case door member back toward the inside of the high-frequency heating device from the open state of the tank case door member. 5. The high frequency heating device according to 5.