KR100992010B1 - Electromagnetic induction heating cooker - Google Patents

Abstract

PURPOSE: An electromagnetic induction heating cooker is provided to prevent products from being deformed or damaged by operating the products only when a magnetic inner pot is mounted. CONSTITUTION: A substrate is mounted inside a body(110) and senses an inner pot by using current difference of an induction coil. A coil base(120) receives the inner pot. A fixing terminal is arranged on the lower side of the coil base and is connected to the substrate through a wire. A sensor body(130) passes through the lower center of the coil base. The sensor body is vertically moved by the pressure of the inner pot. A moving member(140) has a moving terminal and senses the inner pot by the conduction with the fixing terminal.

Description

Electromagnetic induction heating cooker

The present invention relates to an electromagnetic induction cooking appliance, and more particularly, to an electromagnetic induction cooking apparatus for improving the quality and safety of use of the product.

In general, a cooking apparatus refers to a utensil used to cook food, and a representative cooking apparatus of Korea, which uses rice as a staple, is an electric pressure cooker. The electric pressure cooker is composed of a main body and a lid covering the upper portion of the main body is built-in food is accommodated. In this case, in order to facilitate the storage and separation of food, the inner pot is built into the main body in a detachable structure, and the food is cooked as the inner pot is heated by a heating apparatus provided in the main body.

In addition, the electric pressure cooker has a heating plate heating type and electromagnetic induction heating type according to the heating method. The hot plate heating type is a method of heating the bottom surface of the inner pot with a hot plate with a heater, and recently, the inner pot itself generates heat, and an electromagnetic induction heating type capable of controlling a strong fire power such as a gas fire and sophisticated calories is mainly used.

Here, the electromagnetic induction heating means to cook food by heating with electromagnetic force. When the inner pot of the magnetic body is placed in a magnetic field in which the direction of the magnetic field lines changes, the inner pot uses itself to generate heat by the swirl current generated by electromagnetic induction. . The electromagnetic induction heating pressure cooker is a high frequency induction heating pressure cooker mainly using the electromagnetic induction principle of high frequency power for fast and high quality cooking. The magnetic material refers to a material having magnetic properties such as iron or stainless steel, and the nonmagnetic material, which is a material opposite to the magnetic material, refers to a material that does not have magnetic properties such as aluminum, wood, plastic, and stone.

Therefore, as a representative example of the electromagnetic induction heating type cooking apparatus, the electromagnetic induction heating type pressure cooker is operated only in the inner pot of the magnetic material, and is not operated in the inner pot and utensils of the nonmagnetic material because it is a method of heating the inner pot through the induction current.

In particular, the conventional induction heating type pressure cooker detects the presence of the inner pot while the induction of the magnetic pot when the inner pot of the magnetic material is inserted by using the principle of the electromagnetic induction, and the error display and voice output (for example, buzzer sound or guide sound) on the screen in the microcomputer Induce the user to insert the inner pot of the magnetic material into the body.

However, the conventional electromagnetic induction heating pressure cooker is a product that operates the product even if the magnetic body other than the inner pot is inserted into the main body by detecting the presence of the inner pot as a principle of detecting the occurrence of the electromagnetic induction due to the magnetic body inserted into the main body. There was a problem.

For example, if the product is driven while the magnetic material (eg, rice bowl) is placed inside the main body due to the carelessness of a consumer who is not aware of the detection principle of the electromagnetic induction heating type pressure cooker, the product may be burned out due to abnormal overheating. It may create serious problems that cause consumer safety accidents and property damages under (iii).

In addition, the conventional pressure cooker is equipped with a stainless steel inner pot lid that is lightweight and separate from the lid to facilitate cleaning, such that the inner pot lid of the magnetic material is inserted into the main body inadvertently by the consumer and abnormal heating when the product is operated. There was a problem that the deformation and burnout of the product occurs.

Therefore, there is an urgent need for a method capable of accurately detecting the presence or absence of an inner pot of an electronic induction heating type cooking appliance.

The present invention relates to an electromagnetic induction heating cooking apparatus that improves the quality and safety of the product by preventing the deterioration and the burnout of the product through the double detection to detect the presence or absence of the inner pot mechanically.

In order to solve the above problems, the present invention provides a main body having a substrate for detecting the presence of the inner pot using the current difference of the induction coil; A coil base provided at the inner side of the main body to accommodate the inner pot, the induction coil being provided at one side of an outer surface, and a fixed terminal part connected to the substrate and an electric wire at a lower surface thereof; A sensor body coupled to the coil base so as to be elastically supported by penetrating through a central portion of the bottom, and having a temperature sensing unit therein, the sensor body being vertically moved according to the pressure of the inner pot; And a moving member coupled to interwork with the sensor body and having a moving terminal provided on the top thereof to detect the presence of an inner pot through the presence or absence of energization with the fixed terminal provided on the coil base. .

Here, the both sides of the sensor body is preferably provided with a locking rib extending through the coil base to move up and down and to fix the moving member to interlock with the sensor body. In addition, the locking rib is provided with a fixing hook protruding to prevent the separation of the sensor body at the lower end and constraining the lower end of the moving member, and supporting protrusions protruding to fix the upper end of the moving member to both sides. Is preferred. Further, the locking rib is preferably detachably hooked to the fixing groove of the moving member through an opening of the fixing groove so that the moving member is detachable. In addition, the moving member is preferably provided with a PCB board of the open circuit, the circuit wiring pattern is partially removed symmetrically in the upper edge portion. In addition, the PCB board is made of a mobile terminal connected to the circuit wiring pattern of the closed circuit formed over approximately 1/2 of the upper edge portion, it is preferable that the circuit consists of an open circuit that is formed with a circuit wiring pattern opposed to the mobile terminal. . And, the moving member is made of an injection molding, it is preferred that the upper surface is provided with a mobile terminal portion coated with a metal conductor. In addition, it is preferable that each of the fixed terminal portion and the mobile terminal portion is electrically connected to the substrate and coupled to each of the coil base. In addition, the moving terminal portion is preferably extended from the upper surface of the movable member to be disposed opposite to one end of the fixed terminal portion is interlocked with the sensor body so that the presence of electricity is sensed. In addition, the moving member, a connection groove is formed in the inner circumference and the lower surface of the PCB board with a moving terminal portion of the circuit wiring pattern is connected, and the PCB board and the sensor body, while the water flowing from the sensor body inside It is preferable to include a PCB cover plate through which a drainage hole for draining is formed. In addition, the movable member has a drainage hole for draining moisture introduced through the coupling portion with the sensor body on one side thereof, but preferably has a plate-shaped moving terminal portion formed thereon.

On the other hand, the main body is provided with a substrate for detecting the presence of the inner pot using the current difference of the induction coil; A coil base provided at the inner side of the main body to accommodate the inner pot, the induction coil being disposed at one side of an outer surface, and a fixed terminal plate having one end connected to the substrate and one side by an electric wire at a lower end thereof; A sensor body coupled to the coil base so as to be elastically supported by penetrating through a central portion of the bottom, and having a temperature sensing unit therein, the sensor body being vertically moved according to the pressure of the inner pot; And coupled to interlock with the sensor body, and provides an electromagnetic induction heating cooking device comprising a mobile terminal plate is connected to the substrate by one side of the wire to detect the presence of the inner pot through the presence or absence of electricity to the fixed terminal plate provided in the coil base. .

Through the above solution, the electromagnetic induction heating cooking apparatus of the present invention provides the following effects.

First, the present invention by detecting the inner pot in accordance with the voltage difference and the presence or absence of current due to the pressurization of the inner pot in accordance with the electromagnetic induction, the product is operated only in the inner pot of the magnetic material to prevent product deformation and damage caused by the existing abnormal overheating This can significantly improve the quality and safety of the product.

Second, both sides of the sensor body is provided with a locking rib for fixing the moving member to be interlocked with the sensor body, since the device for detecting the inner pot is provided on the outside of the sensor body, the existing device for detecting the temperature and the inner pot is installed together The integrated body makes the sensor body lighter and smaller than the relatively bulky sensor.

Third, the locking ribs are fixed to the coil base and at the same time, the locking hook and the support protrusion for fixing the moving member are simplified, so that the overall structure is simplified and the moving member is integrated with the sensor body so that temperature sensing and inner pot detection are performed at the same time. The efficiency of operation is improved.

Fourth, the moving member is equipped with a PCB board, which enables accurate sensing operation and mass production. Improvement and manufacturing cost can be reduced.

Fifth, the moving member is made of a simple structure that is attached to the sensor body as a circular ring plate, it is easy to apply a variety of configurations for the inner pot detection can improve the design freedom of other parts.

Sixth, the moving member is provided with a drain hole for draining moisture that can flow through the coupling gap as the sensor body is moved through the lower surface of the coil base, the user's due to the withstand voltage generated by the moisture flow into the mobile terminal Safety accidents such as electric shocks can be prevented in advance.

Hereinafter, with reference to the accompanying drawings will be described in detail the electromagnetic induction heating cooking apparatus according to a preferred embodiment of the present invention.

First, the electromagnetic induction heating type cooking apparatus according to the present invention is described as being limited to the conventional electromagnetic induction heating type electric pressure cooker, except that the basic configuration required for the description of the present invention is the same as the conventional electric pressure cooker.

1 is a cross-sectional view showing the main part of the inner pot is inserted in the electromagnetic induction heating cooking apparatus according to a first embodiment of the present invention, Figure 2 is a coil base of the electromagnetic induction heating cooking apparatus according to a first embodiment of the present invention It is a perspective view showing that the moving member is mounted on.

As shown in FIG. 1 and FIG. 2, the electromagnetic induction cooking apparatus according to the present invention includes a main body 110, a coil base 120, a sensor body 130, and a moving member 140.

In detail, the main body 110 is provided with a substrate (not shown) for detecting the presence or absence of the inner pot using the current difference of the induction coil (see 12 of FIG. 9). The main body 110 is accommodated detachably the inner pot 11, the top is provided with a lid (not shown). The substrate (not shown) is embedded in the main body 110 as an insulating substrate on which an electric circuit is knitted on the surface.

Here, the technique of detecting the presence or absence of the inner pot by using the current difference of the induction coil (see 12 of FIG. 9) is by conventional well-known techniques. Briefly, in the state where the inner pot 11 is inserted into the main body, the AC voltage applied to the induction coil (see 12 in FIG. 9) is converted into thermal energy, and the voltage without such conversion in the state where the inner pot 11 is not inserted. Use the difference.

On the other hand, the coil base 120 is provided on the inner side of the main body 110 to accommodate the inner pot, the coil base 120 is provided with the induction coil (see 12 in FIG. 9) on one side of the outer surface and the The fixed terminal unit 122 connected to the substrate (not shown) and the electric wire 124 is provided.

Here, the coil base 120 is preferably made of a cylindrical shape corresponding to the lower portion of the inner pot 11 to accommodate the inner pot 11, when the magnetic force lines generated from the induction coil passes through the inner pot of the magnetic material Induction coils (see 12 in FIG. 9) are provided on the lower and side surfaces of the inner pot 11 to heat the inner pot 11 in the manner of eddy current flowing, thereby heating the inner pot itself. In addition, the fixed terminal portion 122 is preferably provided in two places so that the current flows by the contact of the mobile terminal portion (see 141 of FIG. 5) formed in the moving member 140.

Meanwhile, a sensor body 130 coupled to the coil base 120 is provided to penetrate and support the bottom surface of the coil base 120. The sensor body 130 has a temperature sensing unit 134 therein. Is provided and moved up and down according to the pressure of the inner pot.

Here, the sensor body 130 is provided with a spring 131 on the inner side of the locking rib 132 in order to have a resilient elastic force, the upper portion of the inner pot 11 is in direct contact with the improved durability and temperature It is made of metal for accuracy of detection. In addition, the temperature sensing unit 134 includes a temperature sensor 134a and a wire 134b connected to the substrate (not shown), and is provided by the spring 131 according to the pressure of the inner pot 11. It is in close contact with the bottom surface of the inner pot 11 detects the temperature of the inner pot (11).

On the other hand, there is provided a moving member 140 coupled to interlock with the sensor body 130, the moving member 140 on the upper surface through the presence or absence of energization with the fixed terminal portion 122 provided in the coil base 120 A mobile terminal unit (see 141 of FIG. 5) is provided to detect the presence of the inner pot.

Therefore, the moving member 140 is moved up and down in conjunction with the vertical movement of the sensor body 130 according to whether the inner pot 11 is pressed, so that the mobile terminal (see 141 of FIG. 5) provided on the upper surface thereof is The fixed terminal 122 may be selectively contacted to detect the presence of electricity.

As described above, the present invention doublely detects the inner pot 11 in accordance with the voltage difference according to the electromagnetic induction and the presence or absence of current due to the pressure of the inner pot 11. That is, even if the inner pot and utensils of the nonmagnetic material (for example, rice bowl) and the magnetic utensils are put into operation, the operation does not work.

Through this, the product is operated only when the inner pot of the magnetic material to prevent deformation and burnout of the product due to the existing abnormal overheating can significantly improve the quality, usability and safety of the product.

On the other hand, Figure 3 is a perspective view showing a lower portion of the coil base of the electromagnetic induction cooking apparatus according to the first embodiment of the present invention.

As shown in FIG. 3, the bottom surface of the coil base 120 preferably includes a sensor mounting part 121 exposed downward to protrude downward to minimize the influence from the inner pot 11 being heated. In addition, the sensor mounting portion 121 has a plurality of terminal seating grooves 21b so that the fixed terminal portion 122 is stably supported on the through hole 21c and the upper surface through which the lower portion of the sensor body 130 passes. The formed sensor boss 21 and a fastening hole 22c extending from the preliminary boss 21 through the extension part 22a and into which a screw can be inserted are formed on the upper surface thereof to connect the fixed terminal part 122 to the wire 124. It is preferable to include a fastening boss 22 to be fixed integrally with. At this time, the end of the wire 124 is preferably provided with a connecting member 123 for fastening.

That is, the coil base 120 is preferably provided with a fastening boss 22 exposed to protrude downward so that one side of the fixed terminal 122 extends to the outside to be fastened to the wire 124.

Through this, since the device for detecting the inner pot is provided on the outside of the sensor body, the sensor body can be miniaturized with a lighter weight than the relatively bulky sensor with the integrated configuration of the existing temperature sensing and the inner pot detecting device together.

On the other hand, Figure 4 is a perspective view of the sensor body of the electromagnetic induction heating cooking apparatus according to the first embodiment of the present invention from the top and bottom.

As shown in Figure 4, the both sides of the sensor body 130 extends to move up and down through the coil base 120, the locking to secure the moving member 140 to work with the sensor body 130 Preferably, ribs 132 are provided. The hook rib 132 is fixed to the hook groove 21a of the coil base 120 at the lower end to simplify the fastening structure, and at the same time, a fixed hook 132a for fixing the lower end of the movable member 140 and both sides. It is preferable that the support protrusion 132b for fixing the upper end of the moving member 140 is provided in the portion.

In addition, the locking ribs 132 are inserted into the locking holes 21a of the coil base and are provided at opposite sides of the sensor body 130 so as to be movable so that they can be moved. 131 is inserted. Therefore, since the locking ribs (see 132 of FIG. 4) do not protrude outward, the size of the sensor body 130 may be minimized.

Therefore, the locking rib 132 is fixed to the moving member 140, the moving member 140 is integrally moved with the sensor body 130 is moved up and down in accordance with the pressure of the inner pot 11 to move for current communication The contact operation of the terminal unit 141 is made to interlock.

In addition, the locking rib 132 is coupled to or separated from the locking groove 21a by pressing or releasing it in an inward direction on its cross section through a free space on the inner side, so that the locking groove 144 is fixed by the same principle. By coupling to or separating from the movable member 140 can be easily removable.

That is, the locking rib 132 is preferably contracted by a contraction after being contracted through the space spaced from the spring 131 provided therein and inserted into the fixing groove 144 of the movable member 140.

As such, the locking rib 132 is easily detachable and simultaneously fixes the sensor body 130 and the moving member 140. Through this, the overall structure is simplified and the moving member 140 is integrally moved with the sensor body 130 so that the temperature detection and the inner pot detection are made at the same time, the efficiency of operation is improved.

On the other hand, Figure 5 is a view showing the upper surface of the moving member of the electromagnetic induction heating type cooking apparatus according to the first embodiment of the present invention.

As shown in Figure 5, the moving member 140 is made of a circular ring plate shape, the circuit wiring pattern 142 on the upper surface in order to prevent deformation due to overheating deformation due to the temperature rise due to induction heating It is preferably provided with a printed circuit board (PCB) plate 140 of an open circuit symmetrically partially removed along its circumferential direction. The PCB board refers to a printed circuit board made of a single layer of copper foil.

Here, the PCB plate 140, the fixing groove 144 is inserted into the engaging rib 132 to be moved integrally with the sensor body 130 on the inner circumference, and approximately 1/2 of its circumference is connected to the upper surface It is preferably made of an open circuit including a mobile terminal 141 connected to the circuit wiring pattern of the closed circuit, the circuit wiring pattern is formed opposite to the mobile terminal 141.

Accordingly, the maximum temperature according to the heating of the PCB plate is maintained at 100 ° C or less, thereby preventing damage due to deformation of the PCB plate. In addition, accurate sensing operations and mass production are possible, reducing product quality and manufacturing costs.

On the other hand, Figure 6 is a perspective view showing the upper and lower fixed terminal portion of the electromagnetic induction heating cooking apparatus according to the first embodiment of the present invention, Figure 7 is the connection of the electromagnetic induction heating cooking apparatus according to the first embodiment of the present invention A perspective view showing the top and bottom of the member.

6 and 7, a fixed contact portion 122a protruding round is formed at one side of the fixed terminal portion 122, and the other side thereof is formed by a connection member 123 provided at an end of the wire. It is preferred to be connected to the wire 124.

Here, the fixed terminal 122 and the connection member 123 is made of a conductor such as metal, the connection member 123 is electrically connected to the end of the stripped off the wire 124.

Accordingly, after the fastening hole 122b of the fixed terminal portion 122 and the bolt hole 123b of the connecting member 123 are sequentially arranged to correspond to the fastening hole 22c of the fastening boss 22, the screw (Fig. (See 13, 9)) to be fixedly coupled. Of course, the fixed terminal portion and the connection member may be provided integrally.

Hereinafter, with reference to the accompanying drawings will be described the operation and effect for the inner pot detection of the electromagnetic induction heating type cooking apparatus according to the present invention.

8 is a cross-sectional view showing the main part of the inner pot separated state in the electromagnetic induction heating cooking apparatus according to the first embodiment of the present invention.

1 and 8, in the state where the inner pot 11 is separated from the main body 110, the sensor body 130 is supported upward by the spring 131. Therefore, the moving member 140 which moves integrally with the sensor body 130 is in contact with the moving terminal 141 in contact with the fixed terminal 122. At this time, since the mobile terminal 141 is made of a closed circuit, a current flows due to contact with the plurality of fixed terminal portions 122, and the current is transmitted to the substrate (not shown) connected by the fixed terminal portion 122 and the wire 124. The inner pot 11 will be detected that there is no. Furthermore, the absence of the inner pot 11 may be detected by the substrate (not shown) that senses the voltage of the induction coil (see 12 of FIG. 9).

In this case, when one or more of the signals according to the double sensing are transmitted to the substrate, it is preferable to output the text, voice, or buzzer through the display device and the speaker.

Then, in the state in which the inner pot 11 is inserted into the main body 110, the sensor body 130 is moved downward by the pressure caused by the insertion of the inner pot 11 in a state parallel to the weight of the inner pot (11) 131 is compressed. Therefore, the moving member 140 which is integrally moved with the sensor body 130 is moved downward so that the mobile terminal 141 is contacted from the fixed terminal 122 so that no current flows. Detect. At this time, the inner pot detection using the current difference of the induction coil is performed in parallel. In addition, at the same time, since the sensor body 130 is in close contact with the bottom surface of the inner pot 11, temperature sensing is performed by the temperature sensing unit 134.

Therefore, since the inner pot 11 of the magnetic body (eg, non-magnetic inner pot or utensil and magnetic body utensil) can be detected, the presence or absence of the inner pot of the electromagnetic induction cooking apparatus can be accurately determined. Accordingly, the reliability of the product quality can be improved to the consumer.

On the other hand, Figure 9 is an exemplary view showing the main part of the electromagnetic induction heating cooking apparatus according to a second embodiment of the present invention.

The basic configuration except for the moving member of this embodiment is the same as that of the first embodiment described above. Therefore, for the sake of convenience of description, the same configuration uses the same name and number as the first embodiment described above.

The present embodiment is characterized in that the moving member 240 is disposed in a place where the influence is less from heat, the moving member is provided as an injection of plastic for the reduction of the unit cost, and the moving terminal part 241 is provided as a partial conductor.

Accordingly, as shown in FIG. 9, the movable member 240 is made of an injection molded product having a circular ring shape in order to reduce the weight and material cost. Preferably, the movable terminal 242 provided on the upper surface is made of a conductor such as metal. Do. At this time, since the moving terminal 241 is made of a metal material, the moving terminal part 241 is configured to have a minimum area on the moving member 240 to reduce the material cost.

In addition, Figure 9 (a) is the main part of the electromagnetic induction heating type cooking machine viewed from above and Figure 9 (b) is viewed from the side.

On the other hand, Figure 10 is an illustration showing the main part of the electromagnetic induction heating cooking apparatus according to a third embodiment of the present invention, Figure 11 is an operation according to the presence or absence of inner pot in the electromagnetic induction heating cooking apparatus according to a third embodiment of the present invention It is sectional drawing of the principal part which showed the state.

Except for the fixed terminal plate, the mobile terminal plate of the present embodiment, and the moving member of the first embodiment described above, the basic configuration is the same as that of the first embodiment described above, and thus a detailed description thereof will be omitted.

The feature of this embodiment is a circular ring plate so that the fixed terminal plate 322 and the mobile terminal plate 340 are directly opposed to each other in order to simplify the operation structure to prevent a failure due to damage to the circuit used in the above-described embodiment. It is provided with a conductor of shape.

Accordingly, as shown in FIGS. 10 and 11, each of the fixed terminal board 322 and the mobile terminal board 340 is electrically connected to one side of the fixed terminal board 322 by a wire 324 to a substrate (not shown). Consisting of a conductor, the fixed terminal plate 322 is fixedly coupled to the lower surface of the coil base 320 by a screw 13 through a fastening boss 32 and the mobile terminal plate 340 is a moving member (140 in FIG. 1). It is preferable to be interlocked with the fixed terminal plate 322 so as to replace the hooked to the fixed hook (332a) and interlocked with the sensor body 330 to detect the presence of electricity.

In addition, Figure 11 (a) shows a state in which the inner pot is separated from the main body, Figure 11 (b) shows a state in which the inner pot is inserted into the body.

On the other hand, Figure 12 is an exemplary view showing the main part of the electromagnetic induction heating cooking apparatus according to a fourth embodiment of the present invention.

The basic configuration except for the wire connection configuration by the mobile terminal unit, the fixed terminal unit, and the fastening boss of the present embodiment is the same as the first embodiment described above.

The characteristic of the present embodiment is a simple component structure to prevent the occurrence of component defects and to omit the fastening boss of the first embodiment described above to improve the design freedom of other components, and the fixed terminal portion 422 and the mobile terminal portion 441 are coil bases. It is to be joined to the upper surface of 420.

Accordingly, as shown in FIG. 12, each of the fixed terminal part 422 and the mobile terminal part 441 is electrically connected to one side of the substrate (not shown), and the fixed terminal part 422 is coiled to minimize the volume to which the fixed terminal part 422 is coupled. It is formed on the lower surface of the base 420 and the moving terminal portion 441 is extended to correspond to the outer surface of the sensor boss 41 to be disposed opposite to one end of the fixed terminal portion 422 from the upper surface of the moving member 440. It is preferable to be linked with the sensor body 430.

As in each embodiment described above, the moving member is made of a simple structure that is attached to the sensor body by a circular ring plate, it is easy to apply a variety of configurations for the inner pot detection can improve the design freedom of other parts.

On the other hand, Figure 13 is an exemplary view showing the main part of the electromagnetic induction heating cooking apparatus according to a fifth embodiment of the present invention, Figure 14 is a moving member of the electromagnetic induction heating cooking apparatus according to a fifth embodiment of the present invention from the upper side This is an exploded perspective view.

Since the basic configuration except for the separating structure of the moving member of the present embodiment is the same as the first embodiment described above, a detailed description thereof will be omitted.

A feature of the present embodiment is to adopt a structure for draining the water that may be introduced through the gap generated when the sensor body is coupled to the coil base, thereby preventing accidents such as electric shock of the user.

That is, as shown in FIGS. 13 and 14, the movable member 540 includes a PCB plate 543 having a connection groove 543a formed on an inner circumference thereof and having a mobile terminal 541 thereon, and the PCB plate 543. ) Is connected to the sensor body 530, it is preferably provided with a PCB cover plate 545 having a drain hole 545b for draining the water flowing from the sensor body 530 inside.

Here, the PCB cover plate 545 has a fixing groove 544 is fixed to the fixing hook 532a of the sensor body 530 and its connecting projection 545a in the connection groove 543a of the PCB plate 543. ) Is connected to and fixed to the PCB plate 543 and the sensor body 530. This is not limited to this structure as an example. In addition, the water drain hole 545b is the coil base 520 and the sensor body 530 so that moisture does not come into contact with the mobile terminal 541 of the PCB plate 543 when water is introduced into the body without the inner pot. It guides the moisture to move downward through the gaps.

Therefore, the moving member 540 is made of a separate structure of the PCB plate 543 and the PCB cover plate 545 and drain holes for draining moisture introduced through the sensor body 530 inside the PCB cover plate 545. 545b is formed. Through this, safety accidents such as electric shock of the user due to shorts, etc. generated due to moisture flow into the mobile terminal unit 541 and product failure can be prevented in advance.

Further, an arc-shaped blocking film 545c protruding upward is formed in the edge portion of the discharge hole 545b to protect the mobile terminal 641 from moisture.

On the other hand, Figure 15a is a side cross-sectional view showing one side of the main part of the electromagnetic induction heating cooking apparatus according to a sixth embodiment of the present invention, Figure 15b is another portion of the main part of the electromagnetic induction heating cooking apparatus according to a sixth embodiment of the present invention Side cross-sectional view showing the side. 16 is an exploded perspective view of the moving member according to the sixth embodiment of the present invention as viewed from below.

Since the basic configuration except for the moving member of the present embodiment is the same as the first embodiment described above, a detailed description thereof will be omitted.

A feature of this embodiment is to provide a moving member for draining the same water as the feature of the fifth embodiment described above, but to reduce the manufacturing cost by using a single circular ring shape rather than a separate structure.

That is, as shown in Figures 15a and 15b, the moving member 640 is formed on one side through the drain hole 645b for draining the water flowing through the coupling portion with the sensor body 630, the bottom plate It is preferable that the mobile terminal portion 641 is shaped.

Here, the mobile terminal 641 is made of a conductor such as a metal capable of energizing the fixed terminal 622a. In addition, the drain hole 645b is the water flowing from the lower surface of the coil base 620 along the arrow shown in the mobile terminal 641 through the coupling portion of the sensor body 630 and the moving member 640. It is a passage that guides moisture to block it. In addition, an arc-shaped barrier film 640b protruding upward is formed in the edge portion of the discharge hole 645b to protect the mobile terminal 641 from moisture. Of course, the barrier film may extend downward.

And, as shown in Figure 16, the mobile terminal portion 641 is bent by bending through the bending support hole 640a formed in the movable member 640, the bending fixing projections (641a) of the metal plate body protruding downward. It is installed to face the lower surface of the coil base 620 in a simple manner fixed by.

Therefore, as well as blocking the water flowing into the mobile terminal 641 through the drain hole 645b, as well as the mobile terminal 641 is coupled to the mobile member 640 in a metal plate shape in a simple manner, the installation is easy and detailed Compared with the separation structure of the fifth embodiment, the manufacturing cost can be significantly reduced.

As described above, the present invention is not limited to the above-described embodiments, but may be modified and implemented by those skilled in the art without departing from the scope of the claims of the present invention. Such modifications are within the scope of the present invention.

1 is a cross-sectional view showing the main part of the inner pot is inserted in the electromagnetic induction heating cooking apparatus according to a first embodiment of the present invention.

Figure 2 is a perspective view showing that the moving member is mounted to the coil base of the electromagnetic induction heating cooking apparatus according to the first embodiment of the present invention.

Figure 3 is a perspective view showing a lower portion of the coil base of the electromagnetic induction cooking apparatus according to the first embodiment of the present invention.

Figure 4 is a perspective view of the sensor body of the electromagnetic induction heating cooking apparatus according to a first embodiment of the present invention from the top and bottom.

5 is a view showing the top surface of the moving member of the electromagnetic induction heating cooking apparatus according to the first embodiment of the present invention.

Figure 6 is a perspective view showing the top and bottom of the fixed terminal portion of the electromagnetic induction heating type cooking apparatus according to the first embodiment of the present invention.

Figure 7 is a perspective view showing the top and bottom of the connecting member of the electromagnetic induction heating type cooking apparatus according to the first embodiment of the present invention.

Figure 8 is a cross-sectional view showing the main part of the inner pot is separated in the electromagnetic induction heating cooking apparatus according to the first embodiment of the present invention.

Figure 9 is an exemplary view showing the main part of the electromagnetic induction heating cooking apparatus according to a second embodiment of the present invention.

10 is an exemplary view showing the main part of the electromagnetic induction heating cooking apparatus according to a third embodiment of the present invention.

11 is a cross-sectional view of the main part showing an operating state with or without inner pot in the electromagnetic induction heating type cooking apparatus according to a third embodiment of the present invention.

Figure 12 is an exemplary view showing the main part of the electromagnetic induction heating cooking apparatus according to a fourth embodiment of the present invention.

Figure 13 is an illustration showing the main part of the electromagnetic induction heating cooking apparatus according to a fifth embodiment of the present invention.

14 is an exploded perspective view of a moving member according to a fifth embodiment of the present invention as viewed from an upper side thereof;

Figure 15a is a side cross-sectional view showing one side of the main part of the electromagnetic induction heating cooking apparatus according to a sixth embodiment of the present invention.

Figure 15b is a side cross-sectional view showing the other side of the main part of the electromagnetic induction heating cooking apparatus according to the sixth embodiment of the present invention.

16 is an exploded perspective view of a moving member according to a sixth embodiment of the present invention as viewed from below.

<Explanation of symbols for the main parts of the drawings>

110: main body 120: coil base

130: sensor body 140: moving member

121: sensor mounting portion 21: sensor boss

22: fastening boss 122: fixed terminal portion

123: connecting member 131: spring

132: locking rib 132a: fixed hook

132b: support protrusion 141: moving terminal portion

144: fixing groove

Claims (12)

A main body provided with a substrate for detecting the presence of the inner pot using the current difference of the induction coil; A coil base provided at the inner side of the main body to accommodate the inner pot, the induction coil being provided at one side of an outer surface, and a fixed terminal part connected to the substrate and an electric wire at a lower surface thereof; A sensor body coupled to the coil base so as to be elastically supported by penetrating through a central portion of the bottom, and having a temperature sensing unit therein, the sensor body being vertically moved according to the pressure of the inner pot; And Electromagnetically induction heating type cooking apparatus comprising a moving member coupled to the sensor body, the moving member provided on the upper surface to detect the presence of the inner pot through the presence or absence of energization of the fixed terminal provided on the coil base. The method of claim 1, Electromagnetically induction heating type cooking apparatus, characterized in that the both sides of the sensor body is extended to move up and down through the coil base and the locking rib for fixing the moving member to interlock with the sensor body. The method of claim 2, The locking rib is provided with a fixing hook protruding to prevent separation of the sensor body at the lower end and restraining the lower end of the moving member, and supporting protrusions protruding to fix the upper end of the moving member to both sides. Electromagnetically induction heating cooking apparatus characterized in that. The method of claim 2, The locking rib is an electromagnetic induction heating cooking device, characterized in that the hook is detachably coupled to the fixing groove of the moving member through the opening of the fixing groove so that the moving member is detachable. The method of claim 1, The moving member is an electromagnetic induction heating type cooking apparatus, characterized in that the circuit board pattern is provided in the PCB board of the open circuit partially symmetrically removed. The method of claim 5, The PCB board includes a mobile terminal portion connected to a circuit wiring pattern of a closed circuit formed over approximately one half of an upper edge portion, wherein the PCB board comprises an open circuit formed with a circuit wiring pattern opposite to the mobile terminal portion. Induction cooker. The method of claim 1, The moving member is made of an injection molding, the electromagnetic induction heating type cooking apparatus, characterized in that the upper surface is provided with a mobile terminal coated with a metal conductor. The method of claim 1, The fixed terminal portion and the mobile terminal portion of the electromagnetic induction heating cooking apparatus, characterized in that each one side is electrically connected to the substrate and coupled to each of the coil base. The method of claim 8, The moving terminal portion extends to be disposed opposite to the one end of the fixed terminal portion from the upper surface of the moving member is coupled to the sensor body so that the presence or absence of electricity is induction cooking apparatus. The method of claim 1, The moving member, The connection groove is formed in the inner circumference and the PCB board having a mobile terminal portion of the circuit wiring pattern on the lower surface, The PCB board and the sensor body, the electromagnetic induction heating type cooking apparatus, characterized in that it comprises a PCB cover plate through which the drainage hole for draining the water flowing from the sensor body inside. The method of claim 1, The moving member is formed on one side through the drain hole for draining the water flowing through the coupling portion with the sensor body, the electromagnetic induction heating cooking apparatus, characterized in that the plate-shaped moving terminal portion is combined. A main body provided with a substrate for detecting the presence of the inner pot using the current difference of the induction coil; A coil base provided at the inner side of the main body to accommodate the inner pot, the induction coil at one side of the outer surface, and a fixed terminal plate at one side of which is connected to the substrate and one side by an electric wire; A sensor body coupled to the coil base so as to be elastically supported by penetrating through a central portion of the bottom, and having a temperature sensing unit therein, the sensor body being vertically moved according to the pressure of the inner pot; And Electromagnetically induction cooking device coupled to the sensor body, the mobile terminal comprises one side connected to the substrate by a wire to detect the presence of the inner pot through the presence or absence of electricity to the fixed terminal plate provided in the coil base.

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