JP5279538B2 - Induction heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress small the kind of constituent components of an induction heating cooker and attain cost reduction by enabling to share commonly components of right and left heating status displays. <P>SOLUTION: The induction heating cooker 1 is provided with an induction heating coil 13 arranged at the lower part of a top plate 12 and a heating status display 20 for displaying heating state by the induction heating coil 13. The heating status display 20 is provided with a case 21 of circular arc type long shape along the outer circumference of the induction heating coil 13, a light guide body 40 housed in the case 21, a light source unit 41 which is installed at one end 21a in length direction of the case 21, and a reflecting plate 51 which is installed at the other end 21b. At the both ends 21a, 21b in length direction of the case 21, both of a light source unit installation part 25 and a reflecting plate installation part 31 are respectively provided, and it is made possible to install the light source unit 41 and the reflecting plate 51 at the one end 21a and the other end 21b in length direction of the case 21 by exchange. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to an induction heating cooker that heats and cooks an object to be cooked accommodated in the cooking container by heating the cooking container with electromagnetic induction by an induction heating coil.

Conventionally, as shown in, for example, Patent Document 1, an induction heating cooker (so-called IH) including a top plate on which a cooking vessel is placed and an induction heating coil that heats the cooking vessel disposed below the top plate.
Cooking heater). This type of induction heating cooker has been widely used in households in recent years because it can cook fried foods, boiled foods, grilled foods, etc. with a large heating power without using gas.

Since the induction heating cooker as described above heats the cooking container by electromagnetic induction using an induction heating coil, it does not have a configuration in which a flame is actually emitted unlike a gas stove. Therefore, while accidents such as fires and burns are unlikely to occur, there is a problem that visual confirmation of the heating state such as cooking output cannot be performed.

Then, in the induction heating cooking appliance shown in patent document 1, the heating state indicator for displaying a heating state in the vicinity of the induction heating coil is provided. The heating state indicator includes an arc-shaped light guide plate disposed on the outer peripheral portion on the near side of the induction heating coil, and a light source disposed on an end portion of the light guide plate. According to such a heating state indicator, the top plate on the labor side of the induction heating coil in which cooking is performed can be made to emit light, and the heating state can be visually easily understood.

Japanese Patent Laid-Open No. 2003-197357

By the way, the induction heating cooker for home use generally has two induction heating coils arranged on the left and right sides of the top plate. In such an induction heating cooker, the heating state indicator is installed in each of the left and right induction heating coils. In this case, it is desirable that the shape of the left and right heating state indicators and the arrangement of the components are symmetrical with respect to each other in consideration of the wiring of the wirings connected to the left and right heating state indicators. Therefore, even in such a case, if the left and right heating state indicators can be used in common with each other, the number of components of the induction heating cooker can be reduced, and the cost of the induction heating cooker can be reduced. be able to.

This invention is made | formed in view of the above-mentioned point, The objective is to provide the induction heating cooking appliance which can aim at cost reduction by restraining the kind of component of a heating condition indicator few. is there.

The present invention for solving the above problems includes a top plate (12) on which a cooking container is placed, and the top plate (1
2) An induction heating cooker provided with a substantially disc-shaped induction heating coil (13) disposed below 2) and a heating state indicator (20) for displaying a heating state by the induction heating coil (13). (1
The heating state indicator (20) includes an arc-shaped long case (21) installed on the side of the induction heating coil (13) and a longitudinal direction of the case (21). A long light guide (40) to be accommodated, a light source component (41) attached to one end (21a) or the other end (21b) in the longitudinal direction of the case (21), and a longitudinal direction of the case (21) A reflective member (51) attached to the other end (21b) or one end (21a) of the light source component (41), respectively, at one end (21a) and the other end (21b) in the longitudinal direction of the case (21). ) To both the light source component mounting portion (25) and the reflection member mounting portion (31) to which the reflection member (51) is mounted. The light source component (41) and the reflection member (51) are connected to the case (21). ) One end (21a)
) And the other end (21b). In the induction heating cooker of the present invention, the induction heating coil (13) includes at least two induction heating coils (13, 13) arranged in parallel with each other, and includes two induction heating coils (13, 1).
3) The components of the heating state indicators (20, 20) corresponding to each may have a symmetrical shape or arrangement.

According to the induction heating cooker according to the present invention, it is possible to replace the light source component and the reflector on one end and the other end in the longitudinal direction of the case of the heating state indicator, so that the pair of left and right induction heating cookers Even when an induction heating coil is provided and the heating state indicators provided on the sides of the pair of left and right induction heating coils are symmetrical with each other, a common case, a light source component, and a reflector are used as components of the heating state indicator. Can be used. Thereby, only one type of each component of the heating state indicator is required. Therefore, the types of parts of the induction heating cooker can be reduced, and the manufacturing cost can be reduced.

In the induction heating cooker, the reflecting member (51) has a mirror-like metal plate (51).
The reflective member mounting portion (31) of the case (21) is a slit-shaped groove portion (31b) into which the reflective member (31) provided at the end portions (21a, 21b) in the longitudinal direction of the case (21) is inserted.
) May be provided. The light source component (41) includes a substrate portion (42) on which the light source (43) is mounted, and the light source component mounting portion (25) of the case (21) is an end portion in the longitudinal direction of the case (21). You may have a snap-in engagement part (29) which snap-in engages the board | substrate part (42) provided in (21a, 21b). According to these, since the reflector or the light source component can be easily and quickly attached to the case without using a special tool or the like, the assembly efficiency of the heating state indicator and the induction electromagnetic cooker is improved.
In addition, the code | symbol in said parenthesis has shown the code | symbol of the corresponding component of embodiment mentioned later as an example of this invention.

According to the induction heating cooker according to the present invention, the parts of the heating state indicator can be shared,
It is possible to reduce the types of components of the induction heating cooker and to reduce costs.

It is a perspective view which shows the whole structure of the induction heating cooking appliance concerning one Embodiment of this invention. It is a perspective view which shows a heating status indicator, and shows the state which attached the light source unit to the end of the case, and attached the reflecting plate to the other end. It is a perspective view which shows a heating status indicator, and shows the state which attached the reflecting plate to the end of the case, and attached the light source unit to the other end. It is a disassembled perspective view which shows the component of a heating condition indicator. It is a perspective view which shows the structural example of the induction heating coil which attached the heating condition indicator.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an external configuration of an induction heating cooker 1 according to an embodiment of the present invention. An induction heating cooker 1 shown in the figure is a cooker that is installed and installed in a system kitchen or the like in a drop-in manner, and includes a main body 11 housed in a substantially rectangular housing, and an upper surface of the main body 11. And a pair of left and right induction heating coils 13 and 13 serving as a heat source installed below the top plate 12 inside the main body 11 and the central back side thereof. And a radiant heater 17. The induction heating coils 13, 13 have a substantially disk-shaped outer shape, and are arranged one by one on the right and left sides of the front side of the top plate 12.

On the other hand, a grill door 18 is provided on the left side (the left side as viewed from the front) of the front surface 11a of the main body 11 so as to be pulled out toward the front side. An operation panel 19 is disposed on the right side of the grill door 18. The operation panel 19 includes a seesaw type power switch 19a.
A lamp 19b, a push-push type operation knob 19c, and the like are disposed. The operation knob 19c can be started by energizing the induction heating coils 13 and 13 and the radiant heater 17 by being pulled out by a push operation, while the operation is stopped by being pushed in. . Further, by rotating the operation knob 19c at the pull-out position, various settings such as heating power, cooking time, cooking temperature and the like by the induction heating coils 13 and 13 and the radiant heater 17 can be performed.

At a position along the outer periphery on the front side of the induction heating coils 13, 13, the induction heating coils 13, 13 are arranged.
Heating state indicators 20 and 20 for displaying the heating state are provided. The heating state indicators 20 and 20 are formed in an arc-shaped strip shape along the outer periphery of the induction heating coils 13 and 13 so that the heating state of the induction heating coils 13 and 13 can be visually confirmed by light emission. is there. In addition, although the top plate 12 is printed with a stone pattern or the like on the surface, transmission windows 12a and 12a that are not printed are provided at locations corresponding to the heating state indicators 20 and 20 on the surface. Is provided. The transmissive windows 12a and 12a allow the heating state indicators 20 and 20 to emit light.
It is visible from above. The heating state indicators 20 and 20 are integrally attached to the induction heating coils 13 and 13 as will be described later.

2 (a) and 2 (b) are perspective views showing the overall configuration of the heating state indicator 20, and FIG.
FIG. 2A is a view showing a state in which the light source unit 41 is attached to one end 21a of the case 21, which will be described later, and the reflection plate 51 is attached to the other end 21b. FIG. It is a figure which shows the state which attached the light source unit 41 to attachment and the other end 21b. FIG. 3 is an exploded perspective view showing components of the heating state indicator 20. As shown in these drawings, the heating state indicator 20 includes a case 21 which is a molded product of a synthetic resin material, a light guide 40 accommodated in the case 21, and one end 21a in the longitudinal direction of the case 21 or the like. A light source unit (light source component) 41 attached to the end 21b and the other end 21b or one end 2 in the longitudinal direction of the case 21
And a reflecting plate (reflecting member) 51 attached to 1a. The case 21 has a substantially rectangular cross-sectional shape, has a long arc shape along the outer periphery of the induction heating coil 13, and is a light guide body formed of a substantially rectangular recess whose upper surface opens over substantially the entire length thereof. A storage unit 22 is provided. A flat plate-like fixing piece 23 is integrally formed on the inner side wall 21c of the arc-shaped case 21 so as to protrude from the upper end of the side wall 21c toward the center of the arc. The fixing piece 23 is
It is formed in a substantially rectangular flat plate shape extending in parallel with the upper surface of the case 21. And the fixed piece 23
A cylindrical shaft-shaped fixing pin 24 that protrudes downward from the lower surface thereof is integrally formed. The fixing pieces 23 and the fixing pins 24 are provided at a plurality of locations along the longitudinal direction of the case 21. In this embodiment, the fixing pieces 23 and the fixing pins 24 are provided at a total of three locations near both ends and the center in the longitudinal direction of the case 21.

The light guide 40 housed in the light guide housing portion 22 of the case 21 is a molded product made of a transparent or translucent synthetic resin material such as acrylic resin or polycarbonate resin, and has a cylindrical bar shape with a circular cross section. The longitudinal direction is formed in an arc shape along the longitudinal direction of the case 21. The light guide 40 is configured such that when light is incident from the end face in the longitudinal direction, the incident light is diffused inside, so that substantially the entire side surface emits light.

The light source unit 41 includes a flat board portion 42 and an LED attached to one surface of the board portion 42.
And a small circuit component 44 attached to the other surface of the substrate portion 42, and a wiring 45 extending from the circuit component 44. The substrate portion 42 is formed in a substantially rectangular shape whose outer shape is slightly larger than the longitudinal section of the case 21. Reflector 51
Is made of a stainless steel plate having a mirror-finished surface. The reflector 51 is formed in a substantially rectangular shape whose outer shape is slightly smaller than the longitudinal section of the case 21.

The case 21 has a shape that is symmetrical with respect to the center in the longitudinal direction, and one end 21a and the other end 21b in the longitudinal direction of the case 21 are respectively provided with a light source unit attachment portion 25 and a reflector attachment portion 31. One set is provided.

The light source unit mounting portion 25 is a snap-in member comprising a mounting plate 26 integrally formed on the end surface of the case 21, an engagement piece 28 provided at the upper end of the mounting plate 26, and engagement pieces 27, 27 provided at the lower end. And a joint portion 29. The mounting plate 26 has a surface arranged perpendicular to the longitudinal direction of the case 21 and is formed in a substantially rectangular flat plate shape that follows the outer shape of the substrate portion 42 of the light source unit 41. Is formed with an opening 26 a penetrating the light guide housing part 22. The light emitter 43 of the light source unit 41 is arranged in the opening 26a. Further, the engagement piece 28 provided at the upper end of the mounting plate 26 is formed in a substantially U-shaped projection protruding on the outer surface of the mounting plate 26, and the engagement piece 27 provided at the lower end of the mounting plate 26, 27 is formed in a strip shape protruding downward from both sides of the lower end of the mounting plate 26. Engagement piece 27,
On the outer surface of the distal end of the light source 27, claw portions 27a and 27a having small protrusions for snap-in engagement with the substrate portion 42 of the light source unit 41 are integrally formed.

The reflector plate mounting portion 31 includes a slit-shaped groove portion 31 a provided inside the light source unit mounting portion 25 in the longitudinal direction of the case 21. The groove portion 31 a is formed in the vicinity of the end portion of the light guide housing portion 22, and is cut downward from the upper surface of the case 21. Groove 3
The reflecting plate 51 can be attached by being inserted into 1a, so that the reflecting plate 51 covers the end surface of the light guide housing part 22 with its surface orthogonal to the longitudinal direction of the light guide housing part 22. Installed.

That is, light source unit attachment portions 25 and 25 are formed at one end 21 a and the other end 21 b in the longitudinal direction of the case 21, and the light source unit attachment portions 25 and 25 in the longitudinal direction of the case 21 are formed.
Reflector plate mounting portions 31 and 31 are formed inside 25. And case 21
A light guide housing portion 22 is disposed inside the reflector mounting portions 31 in the longitudinal direction.

In order to assemble the heating state indicator 20 having the above configuration, first, the light source unit 41 is attached to the light source unit attachment portion 25 at one end 21a or the other end 21b of the case 21. For this purpose, the upper end side of the substrate part 42 is brought into contact with the upper engagement piece 28, and the lower end side of the substrate part 42 is snap-engaged with the lower engagement pieces 27, 27 in this state. As a result, as shown in FIG.
2 is fixed in close contact with the mounting plate 26. In this state, the light emitter 43 inserted into the opening 26 a of the light source unit attachment portion 25 is exposed to the end surface of the light guide housing portion 22.
In addition, the reflection plate 51 is attached to the reflection plate attachment portion 31 at the other end 21 b or the one end 21 a of the case 21. For this, the reflection plate 51 is attached by being inserted into the groove 31 a from the upper surface side of the case 21. Then, the light guide 40 is stored in the light guide storage portion 22 of the case 21. Thus, the assembly of the heating state indicator 20 is completed.

In the heating state indicator 20, one end 40 a of the light guide 40 stored in the light guide storage unit 22.
The light emitting body 43 is opposed to the light guide body 40, and the reflection plate 51 is opposed to the other end 40 b of the light guide body 40. Therefore, the light incident from the one end 40a of the light guide 40 by the light emission of the light emitter 43 and the light guide 4
Both the light reflected by the reflecting plate 51 of the other end 40b of 0 is diffused inside the light guide 40, and the entire side surface of the light guide 40 emits light substantially uniformly. The illuminant 43 can emit light in at least three colors of green, orange, and red. Low light-green, medium heat-orange,
The light emission color of the light guide 40 can be switched in accordance with the heating temperature (output) of the induction heating coil 13 like strong fire-red.

FIG. 4 is a perspective view showing a configuration example of the induction heating coil 13 to which the heating state indicator 20 is attached. As shown in the figure, the induction heating coil 13 includes a coil body 14 mounted on a coil tray 15. The coil body 14 is formed in a substantially disk shape by winding a linear conductive material concentrically, and the coil tray 15 is formed in a substantially disk shape on which the coil body 14 can be placed. Near the end 15a on the near side of the coil tray 15 is a fixing hole 15 made of a through hole.
b is provided. The fixing holes 15b are cylindrical through-holes for inserting and fixing the fixing pins 24 of the heating state indicator 20, and have the number and arrangement corresponding to the fixing pins 24. The heating state indicator 20 is arranged along the end 15a on the near side of the coil tray 15 with the end 15a.
It is fixed in a state with a slight gap between the two. The fixing pin 24 of the case 21 is inserted into the fixing hole 15b from above, and the tip of the fixing pin 24 protruding to the lower surface side of the coil tray 15 is crushed with heat caulking or the like, so that the fixing pin 24 is fixed to the fixing hole 15b. Then, the heating state indicator 20 is attached to the coil tray 15. In the present embodiment, in addition to the three fixing holes 15 b corresponding to the fixing pins 24 of the case 21, one fixing hole 15 b is also provided on each side thereof, so that a total of five are provided. Thereby, the attachment position of the heating condition indicator 20 can be selected from a plurality of locations (three locations in the present embodiment) in the circumferential direction of the coil tray 15.

And in the induction heating cooking appliance 1 of this embodiment, as shown in FIG. 1, the heating condition indicator 20 and 20 is installed in each of the left and right induction heating coils 13 and 13. As shown in FIG. In consideration of the wiring of the wirings 45 and 45 connected to the left and right heating state indicators 20 and 20, the shape and arrangement of the left and right heating state indicators 20 and 20 are symmetrical to each other. Accordingly, the left and right heating state indicators 20 and 20 are provided with light source units 41 attached to both ends of the case 21, respectively.
And the reflection plate 51 are attached in a state where the left and right are interchanged.

In this case, the light source units 41 and 41 attached to the heating state indicators 20 and 20 are connected to a power source, a control circuit (not shown), etc., which are common parts, through the mutual wirings 45 and 45.
Therefore, the common parts are installed between the left and right induction heating coils 13 and 13, and the light source units 41 and 41 of the left and right heating state indicators 20 and 20 are connected to the inner ends of the cases 21 and 21 (
If they are attached to the ends close to each other, the wires 45, 45 connected to the light source units 41, 41 from the common parts can be shortened, so that the wiring 45, 45 and the internal structure of the induction heating cooker 1 are It will be easy. Thereby, simplification of the structure of the induction heating cooking appliance 1 can be achieved.

And the heating state indicator 20 of this embodiment is providing both the light source unit attachment part 25 and the reflecting plate attachment part 31 in the one end 21a and the other end 21b of the case 21, respectively, and this one end 21a.
It is possible to replace the light source unit 41 and the reflection plate 51 with the other end 21b. Therefore, even when the left and right heating state indicators 20 and 20 are bilaterally symmetric as described above, the common case 21, the light source unit 41, and the reflector 51 are used as components of the heating state indicators 20 and 20. It becomes possible. As a result, one type of each component of the heating state indicator 20 is sufficient. Therefore, the types of components of the induction heating cooker 1 can be reduced, and the cost can be reduced.

In addition, in the induction heating cooker 1 of the present embodiment, the reflection plate mounting portion 31 of the case 21 in the heating state indicator 20 inserts the reflection plates 51 provided at the one end 21 a and the other end 21 b in the longitudinal direction of the case 21. It consists of a slit-shaped groove 31a. The light source unit mounting portion 25 of the case 21 includes a snap-in engagement portion 29 that snap-in engages the substrate portion 42 of the light source unit 41. Since the reflector plate mounting portion 31 and the light source unit mounting portion 25 are configured as described above, the reflector plate 51 or the light source unit 41 can be easily and quickly attached to the case 21 without using a special tool. become. Therefore, the assembly ease of the heating state indicator 20 and the induction heating cooker 1 is improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in the above-described embodiment, the case where the light emitting body 43 having an LED is used as the light source of the heating state indicator 20 is described. However, the light source is not limited to this, and other fluorescent lamps, halogens, and the like. A lamp or the like may be used. Further, the configurations of the case 21, the light guide 40, the light source unit 41, and the reflector 51 that constitute the heating state indicator 20 shown in the above embodiment are all examples, and other shapes, etc. It is also possible to adopt. So, for example,
The light guide 40 may have a shape other than a cylindrical rod shape such as a prismatic shape, or the fixing pin 24 of the case 21.
May be formed in a shape other than a columnar shape such as a prismatic shape.

DESCRIPTION OF SYMBOLS 1 Induction heating cooker 11 Main-body part 12 Top plate 12a Transmission window 13 Induction heating coil 20 Heating state indicator 21 Case 22 Light guide storage part 23 Fixing piece 24 Fixing pin 25 Light source unit attachment part 26 Attachment plate 26a Opening part 29 Snap In engagement portion 31 Reflecting plate mounting portion 31a Groove portion 40 Light guide body 41 Light source unit (light source member)
42 Substrate part 43 Light emitter 44 Circuit component 45 Wiring 51 Reflector (reflective member)

Claims (4)

Induction provided with a top plate on which the cooking container is placed, a substantially disc-shaped induction heating coil disposed below the top plate, and a heating state indicator for displaying a heating state by the induction heating coil A cooking device,
The heating state indicator includes an arc-shaped long case installed on a side of the induction heating coil, a long light guide housed along the longitudinal direction of the case, and A light source component attached to one end or the other end in the longitudinal direction, and a reflective member attached to the other end or one end in the longitudinal direction of the case,
Each of the longitudinal direction of the case is provided with both a light source component attachment portion for attaching the light source component and a reflection member attachment portion for attaching the reflection member, and the light source component and the reflection member. The induction heating cooker is characterized in that it can be attached to one end and the other end of the case. The induction heating coil includes at least two induction heating coils arranged in parallel with each other,
The induction heating cooker according to claim 1, wherein the components of the heating state indicator corresponding to each of the two induction heating coils have symmetrical shapes or arrangements. The reflective member is a metal plate having a mirror-like surface,
3. The induction heating according to claim 1, wherein the reflection member mounting portion of the case includes a slit-like groove portion into which the reflection member provided at a longitudinal end portion of the case is inserted. Cooking device. The light source component includes a substrate portion on which a light source is mounted,
4. The light source component mounting portion of the case includes a snap-in engagement portion that snap-in engages the substrate portion provided at an end portion in the longitudinal direction of the case. The induction heating cooker described in 1.

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