JPH084913Y2 - Household heating supplies - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to household heating appliances, which are used for cooking foods such as hot plates, heating dishes, electric pots and rice cookers, and for keeping heat. The present invention can also be used for baths, toilet seats, etc.

[0002]

2. Description of the Related Art Among electric appliances, hot plates, electric pots, rice cookers, and the like can be mentioned as heating appliances for cooking food products and keeping them warm, but these are all oxidation-resistant metal plates (stainless steel). Etc.) was used as a heating plate, and a metal heating resistor was used to warm it, and the temperature was controlled by constant power control or the like. The same applies to portable electric furnaces and the like.

[0003]

However, in the above-mentioned conventional household heating articles, when an oxidation resistant metal plate (stainless steel or the like) is used as a heating plate and a heater is used as a metal heating resistor,
Since both the heating plate and the heater are electrically conductive, it is necessary to intervene a certain amount of space or an insulator between them to insulate them, and the efficiency of the heat energy of the heater itself is poor. Further, when the heater itself is installed, it is necessary to insulate it by design, so that it becomes larger than the size of the container itself, and it is not small. Furthermore,
From the viewpoint of efficiency, a method of attaching the heater to the lower part has been used, but in this case, the entire container and partial heating could not be performed. Further, since the warming plate is made of a thin metal, the heated heat is likely to be cooled, so that continuous energization is required. Further, there is a problem that the metal plate is weak against oxidation. In addition, since hot plates and the like for directly cooking foods have a Teflon coating process on their surfaces, it is necessary to regulate usage methods, for example, washing with water after use.

The present invention overcomes the above-mentioned drawbacks, has low power consumption, is small in size, is excellent in safety and easiness of use, can be heated according to the purpose of cooking, and can be washed with water such as a heating body. The object is to provide a household heating product capable of

[0005]

Means for Solving the Problems As a result of studying various household heating products, the present inventors have manufactured a ceramic heating body with a built-in heater by integrating a laminated green sheet containing a base and a heater. This led to the completion of the present invention.

That is, the household heating article according to the first aspect of the present invention is provided with a film-shaped heater 11 which is built in and arranged, and a lead take-out portion 12 which is connected to the terminal of the heater 11 and arranged on the back surface side. A container-shaped, dish-shaped, or plate-shaped ceramic heating body 1, a base terminal 21 in contact with the lead take-out portion 12, a lead 22 connected to the base terminal 21, and a heater 11 for controlling the temperature of the heater 11. A base 2 which is provided with a temperature adjusting means 24 and is detachably arranged on the bottom surface side of the ceramic heating main body 1 and the ceramic heating main body 1;
It is characterized by having.

The household heating article according to the second aspect of the present invention comprises a film-like heater 11 installed internally, a lead take-out portion 12 connected to a terminal of the heater 11 and provided on the back side, and the heater 11. A container-shaped, dish-shaped or plate-shaped ceramic heating main body 1 provided with a temperature adjusting means which is attached and has a thermistor 19 for adjusting the temperature of the heater 11.
And a lead terminal 22 that is in close contact with the lead take-out portion 12 and a lead 22 that is connected to the base terminal 21, and is detachably arranged on the bottom surface side of the ceramic heating body 1 with the ceramic heating body 1. And a base 2 that is formed.

The ceramic material type, shape, and
The size and thickness, the pattern of the heater incorporated therein, and the formation location (bottom surface, side surface, both, etc.) of this heater are not particularly limited and can be variously selected depending on the purpose and application. In the above description, the heating main body is made of ceramics in order to ensure insulation and heat retention. Further, the heater has a film shape and is formed as a desired heater pattern.

This heater is usually manufactured as follows in order to protect the heater and the electrical insulation. That is, a desired heat generating heater pattern is formed on the green sheet by screen printing to produce a green sheet with a heater pattern, and the green sheet is made of a ceramic base material (plate, plate, container, sheet, etc.).
It is manufactured by stacking on top of this, further stacking a protective green sheet without a heater pattern thereon, and integrally firing. If necessary, a green sheet without a heater pattern can be arranged below the green sheet with a heater pattern. Through holes for electrically connecting to the terminals of the heater are formed in the heater-patterned green sheet and the green sheet arranged below the green sheet.

The heater may have a desired pattern depending on the purpose and application, but may be, for example, an entire surface heating pattern or a partial heating pattern. To obtain this partial heating,
As shown in FIG. 16 and FIG. 18, one or more points are branched in the middle of one heating heater pattern in series, and between the both ends, between each end and each branch point, or between each branch point is arbitrarily set. It may be a variable heater shape that can be energized, or
As shown in FIGS. 2 and 20, two heaters without branch points are used.
One or more may be arranged. Further, the heaters can be of the parallel type.

In order to integrate the mother body of a desired shape (the object to which the green sheet having the heater pattern is bonded) and the laminated green sheet containing the heater, it is desirable that both materials are of the same kind. Moreover, the difference in the shrinkage rate of sintering [(dimension after firing / dimension before firing) × 100] during firing is preferably 0 to 6%, more preferably about 2%. For example, when the shrinkage rate of the matrix (eg, 81%) is smaller than the shrinkage rate of the green sheet to be laminated (eg, 83%) by about 2%, when the green sheet is bonded / bent to the inside, it is always outside. Since it is pressurized from inside, it has good compatibility. On the contrary, in the case of adhering / bending to the outside, if the shrinkage rate of the matrix is 85% and the shrinkage rate of the green sheet is 83%, it is effective because the pressure is always applied from the outside to the inside. Further, in the case of this adhesion, both of the binders in the raw state are preferably the same kind (binder), a liquid serving as a solvent for the binder is applied to both or one of the adhesive surfaces, and the adhesive surface itself is applied between the both. It is preferable to make it familiar. Even if they are not the same type, apply the same method as above or the material of both of them to the adhesive surface of both or one of them by a blended or simple paste adhesive or a double-sided tape containing ceramics. It can also be mediated. If the difference in shrinkage ratio is within 0 to 6%, and if the above-mentioned device for adhesion is devised, alumina and zirconia can be integrated.

[0012]

EXAMPLES The present invention will be specifically described below with reference to examples. Example 1 (1) Manufacturing of dish-shaped ceramic heating body In the following description, when the member before firing and the portion after firing are the same, the same numbers are given.

First, as shown in FIGS. 1 to 3, a dish-shaped ceramic heating body 1 was manufactured as follows.
That is, 90 parts by weight of Al ₂ O ₃ having an average particle size of 1 to ₃ μ, and S
To 10 parts by weight of a sintering aid composed of iO ₂ , MgCO ₃ , CaCO ₃ , K ₂ O, B ₂ O _3, etc., 1.5 parts by weight of a molding aid WA and 35 parts by weight of water were added and mixed, and the mixture was mixed with trommel. Mixed for 5 hours. After that, it is poured into a mold having a predetermined dish-shaped cavity and dried at 80 ° C. for 2 hours,
Next, the molded base plate (matrix) was deburred, and a through hole for a power terminal was punched. afterwards,
It is heated at 260 ° C. for about 6 hours to remove the internal molding binder, and is further calcined at 1220 ° C. for 1 hour, and the plate-shaped calcined body (matrix) shown in FIG. (Thickness: about 6 mm, major axis: 280 mm, minor axis: 35 mm) 1
I made 5.

On the other hand, four heating patterns 11 of the same plane shape as shown in FIG. 2 and composed of 92 parts by weight of Al ₂ O ₃ and 8 parts by weight of a sintering aid were screened with W-Mo metallized ink. A printed first green sheet (thickness: 0.26 mm) 16 and a second green sheet (thickness: 0.26 mm) 17 were produced. The first green sheet has through holes formed at positions corresponding to the through holes formed in the base plate.

Then, the first and second green sheets were sequentially laminated and pressure-bonded. Then, as shown in FIG. 4, the calcined body 15 is placed on a predetermined mold 3, and the laminated green sheet is placed on the calcined body 15 via an adhesive (alumina paste), and silicon rubber is added. The pressure body 4 was used for pressure bonding and integration. After that, capping (13 in FIG. 1) is performed by filling the through hole with metallization,
Further, the lead take-out portion 12 was formed on the back side of the calcined body and at the position connected to the metallization 13 in this through hole by printing with metallization. Next, while increasing the adhesive effect by thermocompression bonding, resin removal was performed at 250 ° C. for 6 hours, and firing was performed at 1500 to 1580 ° C. in H ₂ . Further, a glass glaze coat is applied to this surface to form a glass layer 18 on the outermost surface, and a Cr—Ni coating layer 14 is formed on the surface of the back lead take-out portion 12 by plating. The heating bodies 1 made of dish-shaped ceramics shown in FIGS.

(2) Structure of Base As shown in FIGS. 5 to 9 and 12 to 13, the base 2 in this embodiment has a base terminal 21, leads 22, and temperature adjusting means (operation panel). 24 and a positioning / fixing means 25 for positioning and fixing the heating main body 1, and the heating main body 1 is detachably arranged on the bottom surface side of the heating main body 1. The base terminal 21 is arranged at a position (a position on the center side) that is in close contact with the lead take-out portion 12. Then, as shown in FIG. 9, when not used, it is buried below the plane to ensure safety. When the heating main body 1 is placed on the base 2, the projection 23 is outward (outer peripheral side) on one side so that the base terminal 21 projects due to the lever action and the spring action.
Is formed at the position. As shown in FIG. 5, four sets of the base terminal 21 and the protrusion 23 are arranged at substantially equal intervals.

The lead 22 is connected to the base terminal 21, and the lead 22 is connected to a power source (not shown) via the temperature adjusting means 24. This temperature control means 24
For example, as shown in the temperature control operation panel of FIGS. 6 and 8 (and the content thereof, which is also referred to as 24), the entire heating (in this case, the heaters are set to have the same temperature). ) Or partial heating of each part can be freely performed by selecting the "send" button 24a, and an appropriate resistance value (or voltage value) can be selected by the knob 24b for the set temperature of each heater part. Further, the knob 24b may also serve as a lamp display indicating heating (or energization).

The heating body positioning / fixing means 25 is a fixing recess 1 provided at the bottom of the heating body 1 shown in FIG.
It is composed of a positioning / fixing projection 25a inserted in a and gear means 25b for moving the projection 25a left and right. Then, first, the concave portion 1a of the heating main body 1
Positioning is performed by inserting the protrusion 25a into the
Then, as shown in FIG. 13, the protrusion 25a can be moved to the left or right by a lever that operates a predetermined gear means 25b to apply pressure to the peripheral surface of the recess 1a to fix it. Also, as other positioning / fixing means,
As shown in FIGS. 21 and 22, the convex portion 1 is formed on the heating body 1.
It is also possible to provide a'and insert it into the recess 25a 'of the mating member.

In the heating article of this embodiment, since the heater is integrally built in the dish-shaped heating body, the product can be downsized, and all or each of the four bottom surface areas can be reduced. It can be selected and heated. Further, since this heating body is made of ceramics and has an excellent effect of emitting far infrared rays, it is convenient for cooking and the like, and is also excellent in heat retention, oxidation resistance and hygiene. Further, since the heating part and the electric part (energization part) are separate bodies, the heating main body used for cooking or the like can be washed with water as it is after use. Further, since the heating main body is provided with the positioning / fixing means, the heating main body does not shift during use, so that there is neither a failure in energization nor difficulty in cooking.

Embodiment 2 This embodiment is substantially the same as Embodiment 1 except that a thermistor 19 is used as the temperature adjusting means and this thermistor and a circuit are provided in the heat generating main body 1, as shown in FIG. Alternatively, the configuration may be similar. As shown in FIG. 14, one thermistor 19 is attached to each heater, and each thermistor 19 can be partially heated. When heating the whole, all the heaters may be controlled at the same temperature.
This mounting location is located at the central portion of each heater pattern, which is approximately half the volume of each quarter of the heating body. Therefore, the measurement temperature error is small,
Uniform temperature measurement is possible.

The method of controlling with the thermistor is not particularly limited, but an example thereof will be shown. For example, as shown in FIG. 15, a comparator determines whether the voltage received by b _{2 of} B is large or small with respect to the reference voltage value received by a _{2 of} reference A, and ON / OFF control is performed. It is preferable to increase the resistance of the portion A to reduce the power consumption. For example, when a ₂ > b ₂ , it is OFF, and a ₂ <b
The case of ₂ may be turned on.

These thermistors are resistors, which are made of a thick film or a thin film at appropriate locations on the base 1, and a bridge circuit for detecting control is housed inside the base 2 and these are the positioning / fixing means. Upon operation, they are electrically connected to each other. The thermistor may be attached on the front side or the back side. Examples of the thermistor material include Mn, Co, Ni, Fe, Cu transition metal oxide semiconductor composite sintered body for normal temperature of NTC, PTC; BaTiO ₃ system mixed sintered body in which rare earth elements such as Si and Y are added, and CTR; A composite sintered body obtained by adding Ba, Sr, etc. to a V oxide can be used. Then, a thick film or a thin film made of these materials is formed by a printing method, a sputtering method, a vacuum deposition method or the like, and the thermistor is attached to the base 1. As the conduction means of these thermistors, electrodes can be printed (screen printing, transfer printing, etc.) on the mother side in advance to conduct electricity. Since the heating article of this embodiment uses a film-like thermistor, it can be further downsized and can be uniformly heated easily.

It should be noted that the present invention is not limited to the specific embodiment described above, but various modifications may be made within the scope of the present invention depending on the purpose and application. As means for pushing up the base terminal to bring it into close contact with the lead take-out portion, a cam type contact method as shown in FIG. 10 or a gear type contact method as shown in FIG. 11 can be used.

Further, a rectangular tray-shaped product manufactured by stacking and firing the green sheets shown in FIGS. 17 to 19 can be used as a heating body. In addition, FIG. 17 shows a protective green sheet (for example, as shown in FIG.
FIG. 18 shows a green sheet on which a heater pattern is printed (for example, thickness; 0.96).
mm), and FIG. 19 shows a base green sheet (for example, thickness; 0.96 mm) that constitutes the lower layer. And, normally, these two mother green sheets, 1
It is manufactured by stacking one heater pattern green sheet and one protective green sheet and firing them in the same manner as above. Further, as shown in FIG. 18, the heater pattern can be formed substantially on the front surface of the heating main body, and the lead take-out portions are provided at four ends (first to first) of one meandering pattern. Fourth) It is also possible to provide and heat a desired portion. Further, as shown in FIG. 20, the heater pattern may be separately provided on the outside and the inside. Further, as shown in FIG. 16, a plurality of green sheets having a heater pattern may be radially arranged on the same surface.

[0025]

As described above, in the household heating product of the present invention, since the heater is integrally built in the heating body such as the plate and the container, the product can be downsized and the heat energy can be reduced. Power loss can be saved with less loss. In addition, the position of the heater can be freely set, and it is possible to freely heat the desired portion such as the whole body heating, partial heating (side surface, bottom surface, etc.), and it is possible to use it widely depending on the cooking purpose etc . Further, since this heating body is made of ceramics, it has an excellent effect of emitting far-infrared rays. Therefore, heat quickly permeates into dishes and the like, so that the energization time can be shortened. Also,
Since the heating body consists of ceramics and a heater, both heating and heat retaining properties can be achieved, and since the heating body itself is made of ceramics, it is excellent in oxidation resistance and hygiene. It is easy to use because there are no restrictions on handling the specifications of the device.

Further, since the heating part and the electric part (energization part) are separate bodies, the heating main body having a shape such as a dish or a container used for cooking can be washed with water after use, which is very convenient. . Further, as long as there is a power source for automobiles and a battery having a slightly larger capacity, it can be used anywhere and can be carried, and in the case of a heating body having a small volume, it can also be used as a battery or the like.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view of a heating body according to a first embodiment.

FIG. 2 is a partially cutaway plan view of the heating body according to the first embodiment.

FIG. 3 is a back view of the heating body according to the first embodiment.

FIG. 4 is an explanatory cross-sectional view showing a state in which green sheets and the like are stacked and pressure-bonded in Example 1.

FIG. 5 is a plan view of a base according to the first embodiment.

FIG. 6 is a front view of the base according to the first embodiment.

FIG. 7 is a left side view of the base according to the first embodiment.

FIG. 8 is an explanatory diagram showing an operation panel related to the temperature adjusting means arranged on the base of the first embodiment.

FIG. 9 is an explanatory cross-sectional view showing the operation of the base terminal according to the first embodiment.

FIG. 10 is an explanatory cross-sectional view showing an operation of a cam type contact base terminal according to another embodiment.

FIG. 11 is an explanatory cross-sectional view showing an operation of a base terminal of a gear type contact mode which is another mode.

FIG. 12 is an explanatory cross-sectional view showing a state before the positioning / fixing means for positioning and fixing the heating main body according to the first embodiment on the base.

FIG. 13 is an explanatory cross-sectional view showing a state after the positioning / fixing means of the heating body according to the first embodiment is actuated.

FIG. 14 is a plan view of the heating body according to the second embodiment.

FIG. 15 is an explanatory diagram showing a circuit for operating a thermistor or the like according to the second embodiment.

FIG. 16 is an explanatory diagram showing a heater pattern of another aspect.

FIG. 17 is a plan view of a green sheet for forming an outermost surface protective layer for manufacturing a heating body of another embodiment.

FIG. 18 is a plan view of a green sheet having a heater pattern for manufacturing a heating body of another aspect.

FIG. 19 is a plan view of a green sheet having through holes for manufacturing a heating body of another aspect.

FIG. 20 is a plan view of a green sheet having a heater pattern for manufacturing a heating body of another aspect.

FIG. 21 is an explanatory cross-sectional view showing a positioning / fixing means of another aspect before actuation.

22 is an explanatory cross-sectional view showing after the operation of the positioning / fixing means shown in FIG. 21.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating body 11 Heater 12 Lead extraction part 14 Cr-Ni coating layer 19 Thermistor 2 Base 21 Base terminal 22 Lead 23 Projection 24 Temperature adjusting means (temperature adjusting operation panel) 25 Positioning / fixing means

Claims (2)

[Scope of utility model registration request] 1. A container-shaped, dish-shaped, or plate-shaped ceramic made up of a film-shaped heater 11 built-in and provided, and a lead take-out portion 12 connected to a terminal of the heater 11 and provided on the back surface side. The heating main body 1, the base terminal 21 that is in close contact with the lead take-out portion 12, the leads 22 that are connected to the base terminal 21, and the temperature adjusting means 24 for adjusting the temperature of the heater 11 are provided. A heating article for home use, comprising: the heating body 1 made of ceramics and a base 2 detachably arranged on the bottom surface side of the heating body 1. 2. A film-like heater 11 provided internally, a lead take-out portion 12 connected to a terminal of the heater 11 and provided on the back surface side, and a temperature of the heater 11 attached to the heater 11 are adjusted. A ceramic body 1 having a container shape, a plate shape, or a plate shape, which is provided with a temperature adjusting means having a thermistor 19 for controlling the temperature, a base terminal 21 that is in close contact with the lead take-out portion 12, and the base terminal 21. A heating article for home use, comprising a lead 22 and the ceramic heating body 1 and a base 2 detachably arranged on the bottom surface side of the ceramic heating body 1.