CN211580231U - Heating cooker - Google Patents

Abstract

The utility model discloses in the induction heating cooking device who has the stir knob that is used for adjusting the respective heating of heating portion of heating cooking container, reduce the cooking container and stir the possibility of knob contact. A heating cooker (10) is provided with: a top plate (14) having a mounting surface (14a) on which a cooking container is mounted; a top frame (16) which holds the outer periphery of the top plate, is attached to the housing (12), and has a top surface (16b) which is an inclined surface that descends from a position higher than the placement surface (14a) of the top plate toward the front; first and second heating units (18A, 18B) which are accommodated in the housing so as to be arranged below the top plate in a left-right direction, and which inductively heat the cooking container; and first and second toggle operation devices (32A, 32B) each having a toggle knob (34) disposed on the top surface of the top frame and adjusting heating of the first and second heating portions, respectively.

Description

Heating cooker

Technical Field

The utility model relates to a heating cooker.

Background

Patent document 1 discloses an induction heating cooker as an example of a heating cooker. A dial knob is disposed on a cooking top surface of the induction heating cooker. In the induction heating cooker, the heating power to the cooking container can be adjusted by rotating the toggle knob.

An operation panel having a through hole is disposed on the front surface of the heating cooker of patent document 2. The operation panel is provided with an operation knob. The operation knob is combined with a rotary encoder protruding from a through hole of the operation panel. The heating power of the cooking container can be adjusted by rotating the operation knob.

Patent document 3 discloses an electrostatic touch button as a mechanism for receiving a heating operation of an induction heating cooker.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2009-163899

Patent document 2: japanese patent laid-open publication No. 2004-28570

Patent document 3: japanese patent No. 5938626

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

However, in the case of the induction heating cooker of patent document 1, a dial knob is disposed on the operation panel. The operation panel is positioned forward of a mounting surface on which a top plate (top plate) of the cooking container is mounted. The operation panel extends in the horizontal direction at a position higher than the placement surface. Therefore, when the user places the cooking container on the placement surface of the top plate, the cooking container is highly likely to be in contact with (scraped by) the dial knob. In particular, when a plurality of heating coils (heating portions) for inductively heating a cooking container are arranged in the left-right direction and a plurality of dial knobs for adjusting heating of the plurality of heating coils are provided, the cooking container is highly likely to come into contact with the dial knobs. That is, since there are a plurality of movement paths through which the cooking container moves above the respective heating coils and a plurality of dial knobs exist, the cooking container is highly likely to come into contact with the dial knobs. For example, when the cooking container is disposed above a certain heating coil, the cooking container may come into contact with a toggle knob for adjusting heating of heating coils other than the certain heating coil.

Therefore, an object of the present invention is to reduce the possibility of contact between a cooking container and a toggle knob in a heating cooker in which a plurality of heating portions are arranged in a left-right direction and the toggle knob for adjusting heating of each of the plurality of heating portions is provided in plurality.

Means for solving the problems

In order to solve the above problem, an aspect of the present invention provides a heating cooker including: a housing; a top plate disposed above the casing and having a placement surface on which a cooking container is placed; a top frame attached to the housing while holding an outer peripheral edge of the top plate, a front side portion of the top frame including a top surface that is an inclined surface that descends from a position higher than a placement surface of the top plate toward the front; a first heating unit and a second heating unit which are accommodated in the housing so as to be arranged below the top plate in a left-right direction, and which inductively heat the cooking container; and a first toggle operation device and a second toggle operation device each having a toggle knob disposed on the top surface of the top frame and adapted to adjust heating of the first heating portion and the second heating portion, respectively.

Effect of the utility model

According to the utility model discloses, can arrange along left right direction at a plurality of heating portions of heating cooking container, and be arranged in adjusting the respective heating of a plurality of heating portions stir the knob and have a plurality of heating cooking device, reduce the cooking container and stir the possibility of knob contact.

Drawings

Fig. 1 is a plan view of an induction heating cooker according to an embodiment of the present invention.

Fig. 2 is a side view of the induction heating cooker.

Fig. 3 is an exploded perspective view of the induction heating cooker.

Fig. 4 is a diagram showing an operation panel of the induction heating cooker.

Fig. 5 is a sectional view of the toggle operating device.

Fig. 6 is an exploded perspective view of the toggle operating device.

Fig. 7 is a perspective view of the induction heating cooker showing a state where the dial knob is detached.

Fig. 8 is a diagram showing a top surface in a front side portion of a top frame in a comparative example.

Fig. 9 is a perspective view schematically showing the entire induction heating cooker according to embodiment 2 of the present invention.

Fig. 10 is a plan view of an induction heating cooker according to embodiment 2 of the present invention.

Fig. 11 is a diagram showing an electrical configuration of an induction heating cooker according to embodiment 2 of the present invention.

Fig. 12 is a view schematically showing a cross section of a dial portion in embodiment 2 of the present invention.

Fig. 13 is a diagram showing a relationship between an output wattage and a click number according to a heating power level in embodiment 2 of the present invention.

Fig. 14 is a diagram showing a display of each LCD unit at the time of selection of an operation speed setting in embodiment 2 of the present invention.

Fig. 15 is a diagram showing a display of each LCD unit at the time of operation speed selection in embodiment 2 of the present invention.

Fig. 16 is a diagram showing a display of each LCD unit at the time of manual menu selection in embodiment 2 of the present invention.

Fig. 17 is a diagram showing a display of each LCD unit at the time of automatic menu selection in embodiment 2 of the present invention.

Description of the reference numerals

10 heating a cooking device; 12a housing; 14a top plate; 14a mounting surface; 15 a top unit; 16a top frame; 16a front side portion; 16b top surface; 16c through holes; 17a key top; 17a an annular groove; 17b through holes; 18A first heating section; 18B a second heating section; 19 a main body unit; a 32A first toggle operating device; 32B a second toggle operating device; a 32C third toggle operating device; 34, a dial knob; 34a cover; 34b a handle; 34c a plate spring; 36a rotary encoder; 36a input shaft; 36b a main body portion; 36c a threaded portion; 38a cap member; 38a flat portion; 38b are raised; 38c a large diameter portion; 38d small diameter part; 38e connecting part; 38f a top surface portion; a 38g mark part; 40a sealing member; 40a small diameter part; 40b a large diameter portion; 40c a convex part; 42 nut; 44 a disc spring; 210 a top unit; 220 a main body unit; 211 a top plate; 212 an operation part; 213 LED part; 213a left LCD section; 213b a central LCD section; 213c a right LCD section; 214LED lights; 214a left LED lamp; 214c right LED light; 221 an inverter circuit; 222 a control unit; 223a heating coil (heating part); 223a left heating coil; 223b right heating coil; 224 a grilling portion; 225 an upper heater; 226 lower heater; 230a toggle part (toggle part, toggle operation device); 230a left toggle portion; 230b central dial portion; 230c right toggle part; 231 a rotary encoder; 232 poking the knob; 233 click feeling imparting portion; 233a spring (movable part); 233 b; 240 to be heated.

Detailed Description

The utility model discloses a heating cooking device of mode has: a housing; a top plate disposed above the casing and having a placement surface on which a cooking container is placed; a top frame attached to the housing while holding an outer peripheral edge of the top plate, a front side portion of the top frame including a top surface that is an inclined surface that descends from a position higher than a placement surface of the top plate toward the front; a first heating unit and a second heating unit which are accommodated in the housing so as to be arranged below the top plate in a left-right direction, and which inductively heat the cooking container; and a first toggle operation device and a second toggle operation device each having a toggle knob disposed on the top surface of the top frame and adapted to adjust heating of the first heating portion and the second heating portion, respectively.

According to this aspect, a plurality of heating units of the heating cooking container can be arranged in the left-right direction, and a plurality of dial knobs for adjusting heating of the respective heating units are provided in the heating cooking device, so that the possibility of contact between the cooking container and the dial knobs is reduced.

For example, in a plan view, the dial knob of each of the first and second dial operation devices may be provided on the top surface of the top frame so as to overlap a first virtual straight line and a second virtual straight line that pass through centers of the first and second heating units and extend in a front-rear direction. Thus, when the cooking container is a container having a long handle such as a pan, the dial knob can be provided so as not to interfere with the handle.

For example, in a plan view, the dial knobs of the first and second dial operation devices may be disposed on the top surface of the top frame such that the rotation center lines of the dial knobs of the first and second dial operation devices are located between the first and second imaginary straight lines. Accordingly, when both the first heating unit and the second heating unit are used at the same time, the user's finger can be quickly moved between the two corresponding toggle knobs, and the usability of the user is improved.

The dial knob may be provided to the top surface of the top frame in such a manner that a rotation center line of the dial knob passes through a portion of the top surface located at a front side with respect to a center line between upper and lower ends of the top surface of the top frame. This can further reduce the possibility of the cooking container coming into contact with the dial knob. Further, since the dial portion operated by the user can be spaced apart from the cooking container to be heated, the possibility of scalding and the like can be reduced.

For example, the first and second dial operation devices may include a button structure that causes the dial knob to advance and retreat with respect to the top surface of the top frame. The toggle operation device also functions as a button, so that it is not necessary to provide a button on the top surface of the top frame, and the appearance can be prevented from becoming complicated.

For example, the first and second dial operation devices may include a rotary encoder having an input shaft engaged with the dial knob, and in this case, the dial knob may be detachable from the input shaft of the rotary encoder. Thus, the toggle knob can be detached to wipe off liquid intruding between the toggle knob and the top surface of the top frame. In addition, the cleaning of the dial knob itself can be easily performed.

For example, in the cooking device, it is preferable that the first toggle operation device and the second toggle operation device are configured such that the toggle knob can be rotated without limitation, and in this case, the cooking device includes a display device which is provided on the top surface of the top frame and displays at least one of a heating level and a heating temperature of the first heating unit and the second heating unit. Thus, the user can know the heating levels of the first heating part and the second heating part via the display device.

For example, the display device may be a liquid crystal display device. This can present more information about the heating portion to the user.

For example, the first and second dial operation devices may have a timer setting function of setting the heating time of the first and second heating units via the dial knob. In this case, it is preferable that an operation button for switching to the timer setting function is provided on the top surface of the top frame. Since the timer setting can be performed by the first dial operation device and the second dial operation device, it is not necessary to separately provide a device for performing the timer setting.

For example, the heating cooker may include an indicator that indicates the heating levels of the first heating unit and the second heating unit. In this case, it is preferable that the indicator includes a plurality of LEDs which are provided on the top surface of the top frame so as to partially surround the dial knob and are lit at brightness corresponding to the heating levels of the first heating unit and the second heating unit. This allows the user to be presented with the heating level at a detailed level using a small number of LEDs.

For example, the heating cooker may include: a barbecue cabinet housed in the housing; and a third toggle operating device for adjusting heating within the barbecue cabinet and including a toggle knob disposed on the top surface of the top frame. This allows the user to easily visually recognize the operation state from above while operating all cooking heating adjustments from above.

The inventors of the present invention have studied the case of using a rotary encoder that outputs a signal corresponding to rotation as described in patent document 2 in the paddle portion structure disposed on the cooking top surface of the heating cooker described in patent document 1.

In this case, since the cooking top surface is required to have a through hole for exposing the encoder, when liquid overflowing from the pot boils on the cooking top surface, the liquid is soaked into the encoder and the main body device from the through hole, and the water adheres to the control unit and the high-voltage unit built in the main body, thereby causing problems such as malfunction of the device and the like, and reducing the reliability of the heating cooker.

Therefore, the present invention has an object to suppress the immersion of water into the encoder and the main body device in a heating cooker having a paddle portion disposed on a cooking top surface, thereby improving the reliability of the heating cooker.

In addition, a heating cooker according to an aspect of the present invention includes: a main body unit including a heating portion and a control portion that controls the heating portion; and a top unit disposed above the body unit. The top unit includes: the operation device includes a base formed with a through hole, and a dial type operation device protruding from a top surface of the base perpendicularly to the top surface. The toggle type operation device includes: an encoder inserted into the through hole and outputting a signal corresponding to the rotation to the control unit; a sealing member disposed in a gap between the encoder and the through hole; and a cap unit that covers the encoder and the outer periphery of the portion of the sealing member exposed from the top surface. A protrusion portion protruding outward and contacting an inner peripheral surface of the cap unit is provided on an outer peripheral surface of the sealing member above the top surface.

According to this aspect, when liquid intrudes from between the base and the cap unit, the liquid rises along the side surface of the sealing member, but the intrusion path of the liquid is blocked by the protrusion of the sealing member. Therefore, the liquid hardly reaches the encoder, and the reliability of the heating cooker can be improved.

Further, the seal member may be a cylindrical shape having an axis perpendicular to the top surface as a center, and the seal member may include: the projection portion is a part of the large diameter portion.

According to this aspect, the sealing member surrounds the entire circumference of the encoder, so that it is difficult for the liquid to reach the entire circumference of the encoder. This can improve the reliability of the heating cooker.

In addition, it may be that the cap unit includes: a cap member that covers the encoder and the outer periphery of the portion of the sealing member exposed from the top surface; and a dial knob covering an outer periphery of the cap member, the dial knob being configured to be attachable to and detachable from the cap member.

According to this aspect, dirt and the like adhering to the lower side of the dial knob can be easily removed by detaching the dial knob.

Further, a support portion for supporting the dial-up operation device may be disposed below the base, a concave portion may be provided on an upper surface of the support portion, and a convex portion combined with the concave portion may be provided on a lower surface of the seal member.

According to this aspect, even if the liquid intruded between the seal member and the base passes through the through hole of the base and reaches the lower portion of the base, the path of intrusion of the liquid into the encoder side can be blocked by the convex portion of the seal member. Further, the liquid entering through the recess of the support portion can be received. Therefore, the encoder can be prevented from being immersed in water, and the reliability of the heating cooker can be improved.

In addition, the dial type operation device may include: a movable part which advances and retreats relative to the top surface, and a switch which switches ON/OFF by advancing and retreating the movable part.

According to this aspect, one dial-type operation device can have a plurality of functions. Therefore, the space of the heating cooker can be effectively used.

The cooking device may include a fixing portion that is disposed on the sealing member and fixed to an outer peripheral surface of the encoder.

According to this aspect, even when the encoder is of a push type, the encoder can be positioned in the height direction.

In addition, a heating cooker according to an aspect of the present invention includes: the heating apparatus includes a heating unit, a dial-type operation device that rotates to receive an operation of the heating unit, and a control unit that changes an output of the heating unit in a stepwise manner according to an amount of rotation of the dial-type operation device. The control unit is configured to select a rotation amount when the output is changed by one step from among a plurality of values. This enables adjustment of the heating power operation speed preferred by the user, and thus can cope with various preferences of the user.

In the heating cooker, the click operation device may include a movable portion that performs a reverse rotation operation for each predetermined rotation amount to give a click feeling to a user, and the plurality of values may correspond to the number of clicks of the click operation device. Thus, the user can easily feel that the heating power operation speed is adjusted by changing the number of clicks, and the usability of the user can be improved.

In the heating cooker, when the smallest output among the outputs of the heating portion settable by the control unit is set as the first output, the control unit may be configured not to select the rotation amount at which the output is changed from the zero output to the first output from among a plurality of values. Thus, from the viewpoint of safety, the rotation amount when the output is changed from the zero output to the first output can be maintained constant.

In the heating cooker, the rotation amount of the dial operation device at the time of changing the output from zero to the first output may be made larger than the rotation amount of the dial operation device at the time of changing the output of the heating portion from the first output to the second output larger than the first output. This can provide an effect of preventing the user from starting heating unintentionally, thereby further improving the usability of the user.

In the heating cooker, when the smallest output among the outputs of the heating unit settable by the control unit is set as the first output, the rotation amount of the dial-type operation device may be made constant from the time when the output is increased by one step from the first output to the time when the output is changed by one step from the output one step before the maximum output to the maximum output. This simplifies the relationship between the output step change and the rotation amount, and improves the usability of the user.

The cooking device may include: the barbecue device comprises a barbecue case and a barbecue poking type operating device which is rotated to receive the operation of the barbecue case, wherein the control part controls the action of the barbecue case according to the rotation of the barbecue poking type operating device. The control unit may be configured to select the manual menu when the grill dial-type operating device is rotated in a first direction and to select the automatic menu when the grill dial-type operating device is rotated in a second direction different from the first direction in a state where the grill is not energized. Thus, the user can quickly select the cooking menu through the toggle operation, thereby further improving the use randomness of the user.

In the heating cooker, the automatic menu may include a plurality of ways, and the control unit may be configured not to accept a change to another way only by rotating the grill dial operation device when one of the plurality of ways is selected. This prevents unintended operation by the user, thereby further improving the usability of the user.

In the heating cooker, the control unit may be configured to cause the heating unit to be in the stopped state when the dial operation device is rotated after a predetermined period in which the dial operation device is not rotated has elapsed while causing the heating unit to be in the stopped state from the energized state. This prevents the user from stopping heating unintentionally, thereby further improving the usability of the user.

In the heating cooker, when the smallest output among the outputs of the heating portion settable by the control unit is set as a first output and an output larger than the first output is set as a second output, the rotation amount of the dial-type operation device when the output changes from the first output to zero may be larger than the rotation amount of the dial-type operation device when the output changes from the second output to the first output. This prevents the user from unintentionally stopping the heating operation, thereby further improving the usability of the user.

(embodiment mode 1)

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a plan view of an induction heating cooker according to an embodiment of the present invention. Fig. 2 is a side view of the induction heating cooker. Fig. 3 is an exploded perspective view of the induction heating cooker.

As shown in fig. 1 to 3, a heating cooker 10 of the present embodiment includes: the heating apparatus includes a housing 12, a top plate 14 disposed above the housing 12, a top frame 16 attached to the housing 12 to hold an outer peripheral edge of the top plate 14, and first and second heating units 18A and 18B disposed below the top plate 14 and housed in the housing 12. The top plate 14 and the top frame 16 constitute a top unit 15.

As shown in fig. 3, the case 12 is made of, for example, a metal material, and the case 12 has a box shape having an opening 12a on an upper side.

As shown in fig. 1, top plate 14 is made of, for example, a rectangular glass plate, and includes a flat placement surface 14a on which cooking containers W1, W2 serving as heating targets of heating cooker 10 are placed. As shown in fig. 3, the top plate 14 is disposed above the housing 12 so as to cover the opening 12a of the housing 12.

As shown in fig. 1 and 3, the top frame 16 is a member made of, for example, a metal material, and is attached so as to hold the outer periphery of the top plate 14. In addition, the top frame 16 is mounted by screw fastening with the case 12.

The top frame 16 has a top portion at a position higher than the placement surface 14a of the top plate 14 and functions as a dam (stopper) so that, for example, liquid boiling over from the cooking container does not slide off from the top plate 14 or the cooking container itself does not slide off from the top plate 14.

As shown in fig. 3, the first heating unit and the second heating unit 18A and 18B are, for example, induction heating coils that inductively heat cooking containers W1 and W2, and are arranged below the top plate 14 in the left-right direction. In the case of the present embodiment, the first heating unit and the second heating units 18A and 18B are mounted on a control board 20 that controls the above-described heating, and the control board 20 is housed in the case 12. The first and second heating units 18A and 18B, the control substrate 20, and the housing 12 constitute a body unit 19.

In the case of the present embodiment, as shown in fig. 3, a barbecue cabinet 22 for accommodating and heating food materials such as fish is mounted on the housing 12. By pulling the grill door 22a forward, the food can be thrown into the grill door 22.

As shown in fig. 1 to 3, an operation panel 30 for a user to adjust heating of the first heating unit and the second heating units 18A and 18B is provided in the heating cooker 10.

As shown in fig. 1 to 3, an operation panel 30 of the heating cooker 10 is provided on the front side portion 16a of the top frame 16. Specifically, the operation panel 30 is configured by providing an operation device operated by the user and a display device for presenting information to the user on the top surface 16b provided on the front side portion 16a of the top frame 16.

Fig. 4 shows an operation panel of the induction heating cooker.

As shown in fig. 4, a first toggle operation device 32A for adjusting heating of the first heating part 18A, a second toggle operation device 32B for adjusting heating of the second heating part 18B, and a third toggle operation device 32C for adjusting heating in the barbecue cabinet 22 are provided on the operation panel 30 (i.e., the top surface 16B of the front side part 16a of the top frame 16). Since the first to third dial operation devices 32A to 32C have substantially the same configuration, only the first dial operation device 32A will be described. When the first to third dial operation devices 32A to 32C are collectively referred to, they are referred to as the dial operation devices 32.

Fig. 5 is a sectional view of the toggle operating device. Fig. 6 is an exploded perspective view of the toggle operating device. The dial operation device is configured to protrude perpendicularly to the top surface 16b of the top frame 16. As shown in fig. 5, a flat plate called a key top 17 is disposed below the top surface 16b of the top frame 16. The key top 17 supports a dial type operation device. The lower portion of the dial operation device is inserted into a through hole 16c provided in the top surface 16b and a through hole 17b provided in the key top 17.

As shown in fig. 5 and 6, the dial type operation device includes a rotary encoder 36, a seal member 40, a nut 42, a disc spring 44, a cap member 38, and a dial knob 34.

The rotary encoder 36 rotates about the rotation center line CR. Center line of rotation CR is an imaginary line perpendicular to top surface 16 b. The rotary encoder 36 outputs a signal corresponding to the rotation amount to the control board 20.

The rotary encoder 36 includes an input shaft 36 a; and a main body portion 36b disposed on the outer periphery of the lower portion of the input shaft 36a and supporting the input shaft 36a by bearings. A screw portion 36c is formed on the outer periphery of the upper portion of the body portion 36 b. The input shaft 36a rotates about the rotation center line CR. The input shaft 36a can advance and retreat perpendicularly to the top surface 16 b. A switch is disposed on the lower surface of the input shaft 36 a. The ON/OFF of the switch can be switched by advancing and retreating the input shaft 36 a.

The body portion 36b of the rotary encoder 36 is inserted into the through hole 16c of the top surface 16b and the through hole 17b of the key top 17, and is fixed to the position by the nut 42. The material of the rotary encoder 36 is metal.

The sealing member 40 serves to suppress intrusion of the liquid L. The seal member 40 of the present embodiment is used to fill the gap between the through hole 16c and the rotary encoder 36, and to maintain the insulation distance between the through hole 16c and the rotary encoder 36. The seal member 40 is disposed to cover the outer periphery of the body portion 36 b. The seal member 40 has a cylindrical shape centered on the rotation center line CR. That is, the seal member 40 is provided with a through hole having the rotation center line CR as a center line.

The seal member 40 has a cylindrical small diameter portion 40a centered on the rotation center line CR, and a cylindrical large diameter portion 40b disposed at the upper end of the small diameter portion 40a and centered on the rotation center line CR. In other words, the outer peripheral surface of the sealing member 40 has an annular protrusion portion protruding outward, and the protrusion portion corresponds to a part of the large diameter portion 40 b. The protruding portion contacts the inner peripheral surface of the cap member 38. That is, the outer peripheral surface of the large diameter portion 40b contacts the inner peripheral surface of the cap member 38.

A protrusion 40c protruding downward is formed on the lower surface of the small diameter portion 40 a. The projection 40c is combined with an annular groove 17a formed on the upper surface of the key top 17. The projection 40c has a ring shape. The material of the sealing member 40 is a material having high insulation properties, and is, for example, resin. Specifically, the material is polyacetal. The small diameter portion 40a, the large diameter portion 40b, and the projection 40c are integrally formed.

The nut 42 is used for positioning and fixing the rotary encoder 36 in the height direction. The nut 42 is disposed on the upper surface of the seal member 40. In the present embodiment, the nut 42 is disposed on the upper surface of the small diameter portion 40 a. The nut 42 has a through hole centered on the rotation center line CR, and has a groove formed on an inner peripheral surface thereof so as to be combined with the screw portion 36c of the rotary encoder 36. The nut 42 is made of a material having high rigidity, such as metal. In particular, the material is carbon steel.

The disc spring 44 is disposed below the nut 42 and at a position between the nut 42 and the upper side of the small diameter portion 40a of the seal member 40, and serves to firmly fix the rotary encoder 36 by the nut 42. The disc spring 44 has an annular shape having a through hole centered on the rotation center line CR. The disc spring 44 is bent so that the distance between the lower surface of the disc spring 44 and the upper surface of the small diameter portion 40a of the seal member 40 is locally different. The material of the disc spring 44 is a metal that is not easily broken by the bending work. Specifically, the material of the disc spring 44 is stainless steel.

The cap member 38 is provided so that the metallic rotary encoder 36 is not exposed even if the dial knob 34 is removed. The cap member 38 is disposed so as to cover the outer peripheries of the rotary encoder 36 and the sealing member 40 at the portion exposed from the top surface 16 b.

The cap member 38 has a large diameter portion 38c, a small diameter portion 38d, a coupling portion 38e, a top surface portion 38f, and a mark portion 38 g. The large diameter portion 38c is cylindrical with the rotation center line CR as the center. The diameter of the large diameter portion 38c is larger than the diameter of the large diameter portion 40b of the sealing member 40. The small diameter portion 38d is disposed above the large diameter portion 38 c. The small diameter portion 38d is cylindrical about the rotation center line CR, and a part of the outer periphery of the small diameter portion 38d is constituted by a flat portion 38 a. The flat portion 38a has a plane parallel to the rotation center line CR. The flat portion 38a forms a D-shaped cross section of the small-diameter portion 38D perpendicular to the rotation center line CR. The diameter of the small diameter portion 38d (the diameter in the case where the flat portion 38a is not present) is smaller than the diameter of the large diameter portion 38 c. The connecting portion 38e is provided to connect the upper end of the large diameter portion 38c and the lower end of the small diameter portion 38 d. The coupling portion 38e is disk-shaped. The top surface portion 38f is provided at the upper end of the small diameter portion 38d so as to cover the upper portion of the small diameter portion 38 d.

Further, the inner peripheral surface of the large diameter portion 38c contacts the outer peripheral surface of the large diameter portion 40b of the sealing member 40. This can prevent the liquid L entering from the lower portion of the dial knob 34 from entering the inside of the cap member 38. Further, a projection 38b projecting radially inward of the large diameter portion 38c is provided on the inner circumferential surface of the lower portion of the large diameter portion 38 c. The projection 38b is disposed at a position where the upper surface of the projection 38b faces the lower surface of the large diameter portion 40b of the sealing member 40. The large diameter portion 40b is caught by the projection 38b, so that the cap member 38 is not easily detached by a user's hand. In the present embodiment, the projection 38b is provided on a part of the inner circumference of the large diameter portion 38c, not the entire inner circumference of the large diameter portion 38 c. Thus, the user can remove the cap member 38 by releasing the engagement between the projection 38b and the large diameter portion 40b with a tool, although the user cannot easily remove the cap member 38 by hand.

A mark portion 38g is provided on the upper surface of the coupling portion 38 e. The mark portion 38g is provided at a position corresponding to the projection 38b via the coupling portion 38 e. This makes it possible to grasp the position of the projection 38b from the appearance of the cap member 38. Therefore, the cap member 38 can be detached by pinching the mark portion 38g with a tool. The mark portion 38g is a flat plate-like projection. The mark portion 38g has a surface parallel to a direction parallel to the radial direction of the large diameter portion 38c and the rotation center line CR. The material of the cap member 38 is a resin material having insulating properties, and is, for example, polypropylene. The projection 38b, the large diameter portion 38c, the small diameter portion 38d, the coupling portion 38e, the top surface portion 38f, and the mark portion 38g are integrally formed.

The dial knob 34 is intended to be held for operation by a user. The dial knob 34 has a cylindrical shape centered on the rotation center line CR. The dial knob 34 has grooves formed therein which are combined with the large diameter portion 38c, the small diameter portion 38d, and the mark portion 38g of the cap member 38, respectively, and the dial knob 34 is disposed above the cap member 38. The dial knob 34 includes a cover 34a operated by a user, a knob 34b disposed inside the cover 34a, and a plate spring 34 c.

The cover 34a is cylindrical about the rotation center line CR, and the inside of the cover 34a is formed into a shape that can be combined with the knob 34 b. The material of the cover 34a is a highly rigid material, and is made of metal, for example. In particular, the material is aluminum.

The knob 34b is disposed inside the cover 34a at a position centered on the rotation center line CR. The knob 34b covers the cap member as a whole. The knob 34b is detachable from the cap member 38. The knob 34b holds the plate spring 34c so that the plate spring 34c contacts the flat portion 38a of the cap member 38. The tab 34b is made of an insulating resin material, for example, polybutylene terephthalate.

The plate spring 34c is configured to contact the flat portion 38a of the cap member 38. The plate spring 34c has a surface curved in the longitudinal direction, i.e., in the direction parallel to the rotation center line CR. The curved surface of the plate spring 34c contacts the flat portion 38a of the cap member 38, and friction is generated, thereby improving the fit between the knob 34b and the cap member 38. The plate spring 34c is made of a material having high rigidity, such as metal. Specifically, the material is stainless steel.

When the user rotates the dial knob 34, the rotary encoder 36 outputs a signal corresponding to the rotation amount to the control board 20. The circuit and processor on the control board 20 control the output of the first and second heating portions 18A and 18B corresponding to the dial knob 34 and the heating in the grill case 22 based on the received signal, that is, based on the rotation amount of the dial knob 34.

In the present embodiment, the first to third dial-type operating devices 32A to 32C are configured to be able to set the heating time of the first and second heaters 18A and 18B and the grill box 22 (that is, to have a timer setting function). Specifically, when the user rotates the dial knob 34, the circuit and the processor on the control board 20 set a count time corresponding to the rotation amount of the dial knob 34, start counting from the count time toward zero, and stop heating when the count time reaches zero.

In order to switch the first to third dial-type operation devices 32A to 32C for adjusting heating to a state in which timer setting is possible (i.e., in order to switch from the heating adjustment function to the timer setting function), as shown in fig. 4, operation buttons 46A to 46C are provided on the operation panel 30 (i.e., the top surface 16b in the front side portion 16A of the top frame 16). When the operation buttons 46A to 46C are pressed by the user, the functions of the first to third dial-type operation devices 32A to 32C are switched from the heating adjustment function to the timer setting function.

In addition, for the timer setting function, the first to third dial type operating devices 32A to 32C may be configured such that the dial knob 34 (in the case of the present embodiment, the input shaft 36a of the rotary encoder 36) can be rotated without limitation, so that a long counting time can be set.

In the case where the dial knob 34 is rotated without limitation, the user cannot know the current heating levels of the first and second heating portions 18A and 18B by merely observing the dial knob 34. Therefore, as shown in fig. 4, indicators 48A, 48B for indicating the current heating level to the user are provided on the operation panel 30 (i.e., the top surface 16B in the front side portion 16a of the top frame 16).

As shown in fig. 4, the indicators 48A, 48B have a plurality of LEDs 50, and the plurality of LEDs 50 are disposed on the top surface 16B of the front side portion 16a of the top plate 16 so as to partially surround the corresponding dial knob 34. The LED50 can light up at a number of different levels of brightness. The indicators 48A and 48B indicate the heating levels of the first heating unit and the second heating unit 18A and 18B by the number of the LEDs 50 turned on and the brightness levels of the LEDs 50 turned on. For example, in the case where 10 LEDs 50 are provided and each LED50 is lit at a brightness level of three stages, the indicators 48A, 48B can express the heating level in thirty stages. This can reduce the total number of LEDs 50, compared to the case where the luminance of the LED50 does not change. Note that indicators having the same configuration as the indicators 48A, 48B may be disposed around the dial knob 34 of the third dial operation device 32C on the operation panel 30 (i.e., the top surface 16B of the front portion 16a of the top plate 16). The level of heating in the barbecue cabinet 22 can be indicated to the user by the indicator.

In the case of the present embodiment, in order to present the heating levels of the first and second heaters 18A and 18B and the temperature inside the barbecue cabinet 22 to the user in numerical values, as shown in fig. 4, display devices 52A to 52C are provided on the operation panel 30 (i.e., the top surface 16B of the front portion 16a of the top frame 16). The display devices 52A, 52B display the heating levels of the first and second heating portions 18A, 18B in numerical values. In addition, the display device 52C displays the temperature inside the barbecue cabinet 22 as a numerical value. The display devices 52A and 52B may display heating temperatures, which are temperatures detected by temperature sensors (not shown) provided between the first and second heating units 18A and 18B and the top plate 14. The display devices 52A to 52C may display information other than the heating level and the temperature, for example, the remaining time of a timer. The display devices 52A to 52C are preferably liquid crystal display devices in order to display various information and a large amount of information, for example, to display all of the heating level, the heating temperature, and the remaining time of the timer.

In the case of the present embodiment, as described above, the rotary encoder 36 is configured such that the input shaft 36a of the rotary encoder 36 advances and retreats in the extending direction of the rotation center line CR with respect to the body portion 36 b. Therefore, the first to third toggle operation devices 32A to 32C have a button structure. Specifically, the dial knob 34 is configured to advance and retreat with respect to the top surface 16b of the front portion 16a of the top frame 16. When the dial knob 34 is pressed by the user, the circuit and the processor on the control board 20 stop heating the first and second heating portions 18A and 18B and the grill case 22, for example. The dial type operation device also functions as a button, so that it is not necessary to additionally provide a button on the top surface 16b in the front side portion 16a of the top frame 16.

As shown in fig. 2 and 3, the mounting surface 14a of the top plate 14 on which the cooking container is mounted is a surface that extends in the front-rear direction and the left-right direction, i.e., in the horizontal direction. On the other hand, the top surface 16b in the front side portion 16a of the top frame 16 provided with the first to third dial operating devices 32A to 32C is an inclined surface rather than a horizontal surface.

Specifically, as shown in fig. 2, the top surface 16b of the front portion 16a of the top frame 16 is an inclined surface that is inclined downward in the forward direction from a position higher than the placement surface 14a of the top plate 14. The reason why the top surface 16b provided with the first to third dial operation devices 32A to 32C is inclined in this manner will be described by referring to a comparative example.

Fig. 8 is a diagram showing a top surface in a front side portion of a top frame in a comparative example.

As shown in fig. 8, the top surface 116b of the front portion 116a of the top frame 116 of the heating cooker of the comparative example is a horizontally extending surface, like the placement surface 14a of the top plate 14. A dial knob 134 of a dial type operation device is disposed on the top surface 116 b. In the drawings, the top surface 16b and the toggle knob 34 of the heating cooker 10 according to the present embodiment are shown by two-dot chain lines.

As shown in fig. 8, the front side portion of the dial knob 134 of the comparative example provided on the top surface 116b that expands in the horizontal direction is located higher than the front side portion of the dial knob 34 of the present embodiment provided on the top surface 16b that inclines forward. Specifically, the front side portion of the top surface of the dial knob 134 of the comparative example is located higher than the front side portion of the top surface of the dial knob 34 of the present embodiment by Δ H.

Therefore, in the case of the dial knob 134 of the comparative example, when the user places the cooking container on the placement surface 14a of the top plate 14, the cooking container is highly likely to come into contact with (scrape against) the front side portion of the dial knob 134 (compared to the dial knob 34 of the present embodiment). For example, there are the following possibilities: when a user places a cooking container containing water on the placement surface 14a of the top plate 14, the user spills the water in the cooking container when the cooking container comes into contact with the toggle knob 134.

In order to reduce the possibility of such contact, in the case of the present embodiment, the top surface 16b in the front side portion 16a of the top frame 16 provided with the first to third dial operation devices 32A to 32C is inclined forward. This embodiment reduces the possibility that the cooking container placed on the placement surface 14a of the top plate 14 by the user will come into contact with the dial knob 34.

In order to further reduce the possibility of the cooking container coming into contact with the toggle knob 34, it is preferable for the toggle knob 34 to be disposed at least half of the front half of the top surface 16b in the front side portion 16a of the top frame 16. In the case of the present embodiment, as shown in fig. 1, the toggle knob 34 is provided on the top surface 16b in the following manner: the rotation center line CR of the dial knob 34 passes through a portion of the top surface 16b on the front side, compared to the center line CL between the upper and lower ends in the top surface 16 b.

In the case of the present embodiment, the installation positions of the first and second dial operation devices 32A and 32B are determined in consideration of the case where cooking containers W1 and W2, such as pans, in which the used cooking containers include long handles Wh protruding outside the heating cooker 10 in plan view, as shown in fig. 1, are used.

Specifically, as shown in fig. 1, when cooking containers W1 and W2 having long handles Wh such as pans are used, the user often places the cooking containers W1 and W2 on the top plate 14 so that the long handles Wh do not extend in the front-rear direction of the heating cooker 10, even if the long handles Wh are not parallel to the front-rear direction. This is to prevent the user from contacting the long handle Wh of the cooking containers W1 and W2.

In view of this, as shown in fig. 1, the first and second toggle operation devices 32A, 32B (the toggle knobs 34 thereof) overlap, in plan view, first and second imaginary straight lines VL1, VL2 that pass through the centers C1, C2 of the first and second heating portions 18A, 18B and extend in the front-rear direction. That is, the dial knob 34 is provided at a position where the long handle Wh of the cooking containers W1 and W2 such as pans is less likely to exist. From the contrary, by turning knob 34, the user is urged to place cooking containers W1, W2 on placement surface 14a of top plate 14 such that long handle Wh extends in a direction other than the front-rear direction.

Since the dial knob 34 overlaps the first and second virtual straight lines VL1, VL2, the corresponding dial knob 34 is present substantially in front of the first and second heating portions 18A, 18B. As a result, when cooking containers W1, W2 are placed on top plate 14 (that is, when placed above first and second heating portions 18A, 18B), the user can intuitively and immediately recognize the toggle knob that can adjust the heating of the cooking container.

In the present embodiment, the dial knobs 34 of the first and second dial operation devices 32A and 32B are disposed close to each other. That is, the rotation center line CR of the dial knob 34 of each of the first and second dial operating devices 32A, 32B is located between the first and second imaginary straight lines VL1, VL2 in plan view. Accordingly, when both the first heating unit and the second heating units 18A and 18B are used at the same time, the user's fingers can be quickly moved between the two dial knobs 34, and the usability of the user is improved.

In the present embodiment, the dial knob 34 of the third dial operation device 32C is disposed between the dial knobs 34 of the first and second dial operation devices 32A and 32B, respectively. Accordingly, when cooking containers W1, W2 are placed above first and second heating units 18A, 18B, the possibility that the handles of cooking containers W1, W2 contact toggle knob 34 of third toggle operation device 32C can be reduced. In addition, since the distance between the three toggle knobs 34 is short, the user's fingers can be moved quickly, and the user's usability is improved.

The heating cooker 10 (an example of a heating cooker) of the present embodiment includes a main body unit 19 and a top unit 15 (an example of a top unit), the main body unit 19 includes a first heating coil 18A, a second heating coil 18B (an example of a heating unit), and a control board 20 (an example of a control unit) that controls the first heating coil 18A and the second heating coil 18B, and the top unit 15 is disposed above the main body unit 19.

The top unit 15 includes a top frame 16 (an example of a base) formed with a through hole 16c, and a dial operation device 32 protruding from a top surface 16b (an example of a top surface) of the top frame 16 perpendicularly to the top surface 16b of the top frame 16.

The dial operation device 32 includes: a rotary encoder 36 (an example of an encoder) which is inserted into the through hole 16c of the top frame 16 and outputs a signal corresponding to the rotation to the control board 20; a seal member 40 disposed in a gap between the rotary encoder 36 and the through hole 16c of the top frame 16; and a cap member 38 and a dial knob 34 (an example of a cap unit) covering the outer peripheries of the rotary encoder 36 and the sealing member 40 exposed from the top surface of the top frame 16.

A projection portion that projects outward and contacts the inner peripheral surface of the cap member 38 is provided on the outer peripheral surface of the seal member 40 above the top surface 16b of the top frame 16. In the present embodiment, the protrusion is a portion outside the large diameter portion 40b and protruding from the small diameter portion 40 a.

According to this aspect, when the liquid L enters from between the top surface 16b of the top frame 16 and the seal member 40, the liquid L may rise along the side surface of the small diameter portion 40a of the seal member 40, but the liquid L is less likely to go over the seal member 40 due to the protrusion portion formed by the large diameter portion 40b of the seal member 40. Therefore, the invasion path of the liquid L is blocked. As a result, the liquid L hardly reaches the rotary encoder 36, and the reliability of the heating cooker can be improved.

The seal member 40 is cylindrical (an example of a tube shape) centered on a rotation center line CR (an example of an axis) perpendicular to the top surface 16b of the top frame 16. The seal member 40 includes a cylindrical small diameter portion 40a centered on the rotation center line CR, and a cylindrical large diameter portion 40b disposed at the upper end of the small diameter portion 40a and centered on the rotation center line CR of the top frame 16, and the protrusion is a part of the large diameter portion 40 b.

According to this aspect, the sealing member 40 surrounds the entire circumference of the rotary encoder 36, and the liquid L hardly reaches the entire circumference of the rotary encoder 36. This can improve the reliability of the heating cooker.

The cap unit comprises a cap member 38 and a dial knob 34. The cap member 38 covers the outer peripheries of the rotary encoder 36 and the seal member exposed from the top surface of the top frame 16, respectively. The dial knob 34 covers the outer periphery of the cap member 38. The dial knob 34 is detachable from the cap member 38.

According to this manner, dirt and the like adhering to the lower side of the dial knob 34 can be easily removed by detaching the dial knob 34 from the cap member 38.

A key top 17 (an example of a support portion) that supports the dial operation device 32 is disposed below the top frame 16, an annular groove 17a (an example of a concave portion) is provided on an upper surface of the key top 17, and a convex portion 40c (an example of a convex portion) that is combined with the annular groove 17a of the key top 17 is provided on a lower surface of the seal member 40.

According to this configuration, even if the liquid L intruded between the sealing member 40 and the top frame 16 passes through the through hole 16c and reaches the lower portion of the top frame 16, the intrusion path of the liquid L can be blocked by the convex portion 40c of the sealing member 40. Further, the liquid L entering through the annular groove 17a of the key top 17 can be received. Therefore, the rotary encoder 36 can be prevented from being immersed in water, and the reliability of the heating cooker can be improved.

The toggle operating device 32 includes an input shaft 36a of a rotary encoder 36 that advances and retreats with respect to the top surface 16b of the top frame 16, and a switch that switches ON/OFF by the advance and retreat of the input shaft 36 a.

In this way, one dial operation device 32 can have a plurality of functions. Therefore, the space of the heating cooker can be effectively used.

A nut 42 (an example of a fixing portion) is disposed above the large diameter portion 40b of the sealing member 40. The nut 42 is fixed to the threaded portion 36c of the rotary encoder 36.

According to this aspect, even when the rotary encoder 36 is of a push type, the rotary encoder 36 can be positioned in the height direction.

According to the present embodiment as described above, in an induction heating cooker in which a plurality of heating portions for heating a cooking container are arranged in the left-right direction and a plurality of dial knobs for adjusting heating of the respective heating portions are provided, the possibility of contact between the cooking container and the dial knobs can be reduced.

While the present invention has been described above by referring to the above embodiments, the present invention is not limited to the above embodiments.

For example, in the case of the above-described embodiment, the first to third dial-type operating devices 32A to 32C are used for adjusting the heating levels of the first and second heating units 18A and 18B, adjusting the temperature in the roasting oven 22, and setting a timer. However, the embodiments of the present invention are not limited to this. For example, a third heating unit may be provided behind the first and second heating units 18A and 18B arranged in the left-right direction, and heating by the third heating unit may be adjusted by using the third toggle operation device 32C. In addition, when the grill case 22 is also provided, the third dial type operating device may be used to adjust the heating of the grill case 22 and the heating of the third heating unit. In this case, the operation button 46c may be a button for switching the heating control of the grill case 22 and the third heating unit, or a button for switching may be further added to the operation panel 30.

For example, in the case where the induction heating cooker is configured to provide the user with a cooking program (a program including heating conditions such as heating temperature and heating time) optimal for the cooking object, the first to third dial-type operating devices 32A to 32C may be used so that the user selects a cooking program of a plurality.

For example, when the user rotates the dial knob of the dial-type operation device in a state where the name of the cooking program (for example, the name of the cooking object (material)) is displayed on the display device, the name of the cooking program displayed on the display device is changed to the name of another cooking program. When the name of a cooking program desired by a user is displayed on the display device and the cooking is waited for several seconds, the induction heating cooker controls the heating of the heating part or the temperature in the oven based on the cooking program. Alternatively, the user may start the desired cooking program by pressing the dial knob in a state where the name of the desired cooking program is displayed on the display device.

For example, the dial operation device may be used for time adjustment of a clock incorporated in the induction heating cooker.

In the case of the above embodiment, as shown in fig. 4, one display device 52A to 52C is provided for each of the first and second heaters 18A and 18B and the grill case 22. However, the embodiments of the present invention are not limited to this. For example, the display screen of one display device may be divided into three areas, and information about each of the first and second heating portions 18A and 18B and the grill case 22 may be displayed in each area.

In the above-described embodiment, the number of heating portions of induction heating type is two, but may be three or more. In this case, the present embodiment can be applied to two heating units, which are disposed leftmost and rightmost among the plurality of heating units, as the first heating unit 18A and the second heating unit 18B. A cooking container having a long handle is often placed above a heating portion disposed at left and right end portions of an induction heating cooker. Therefore, the structure of the present embodiment reduces the possibility of the cooking container contacting the dial knob, thereby improving the usability of the user.

That is, the induction heating cooker according to the embodiment of the present invention broadly includes: a housing; a top plate disposed above the casing and having a placement surface on which a cooking container is placed; a top frame attached to the housing while holding an outer peripheral edge of the top plate, a front side portion of the top frame including a top surface that is an inclined surface that descends from a position higher than a placement surface of the top plate toward the front; a first heating unit and a second heating unit which are accommodated in the housing so as to be arranged below the top plate in a left-right direction, and which inductively heat the cooking container; and a first toggle operation device and a second toggle operation device each having a toggle knob disposed on the top surface of the top frame and adapted to adjust heating of the first heating portion and the second heating portion, respectively.

In the above-described embodiment, the induction heating cooker is exemplified as an example of the heating cooker, but the heating method of the heating cooker is not limited to the induction heating type for the configuration of the dial-up operating device 32. For example, the toggle operating device 32 of the present embodiment may be applied to a heating cooker using gas fire.

In fig. 5, an example is shown in which the projection portion formed of the large diameter portion 40b of the seal member 40 is provided so as to project outward horizontally from the top surface 16b, but the projecting direction of the projection portion is not limited to being horizontal to the top surface 16 b. For example, the lower surface of the projection may be formed to descend downward toward the outside in the radial direction of the large diameter portion 40 b. The lower surface of the projection may be formed to be raised upward toward the outside in the radial direction of the large diameter portion 40 b. However, from the viewpoint of preventing the liquid L from entering, the lower surface of the projection is preferably formed to be horizontal with the top surface 16b or to descend downward toward the outside in the radial direction of the large diameter portion 40 b.

In the above-described embodiment, the projection portion formed by the large diameter portion 40b of the seal member 40 is formed in a ring shape, and the immersion of water can be suppressed over the entire circumference of the rotary encoder 36. That is, the shape of the protrusion may be, for example, an arc shape. In addition, the number of the protrusions may be plural. When one or more of the protrusions are arc-shaped, the total of the central angles of all the protrusions is preferably 180 degrees or more. This can suppress flooding in at least a half-cycle or more of the rotary encoder 36.

In the above embodiment, the small diameter portion 40a, the large diameter portion 40b, and the convex portion 40c of the seal member 40 are integrally formed. This can reduce the number of components. However, the sealing member 40 may be formed by combining several components. For example, the seal member 40 may be formed of a small diameter portion 40a, a large diameter portion 40b, and a convex portion 40c, which are formed of other members. This facilitates adjustment of the height of the sealing member 40. In addition, the sealing member 40 can be easily designed and changed into various shapes.

In the above embodiment, the projection 40c has a ring shape. This can prevent the liquid L from entering the rotary encoder 36 over the entire circumference thereof. However, the shape of the annular projection may not be annular. For example, the shape of the convex portion may be an arc shape. The number of the convex portions may be plural. When the shape of the convex portion is circular arc, the total of the central angles of all the convex portions is preferably 180 degrees or more. This can suppress flooding in at least a half-cycle or more of the rotary encoder 36.

In the above embodiment, the dial operation device 32 is disposed above the top frame 16. This makes it possible to easily process the through hole 16 c. However, the dial operation device 32 may be disposed above the top plate 14. This can improve the design. That is, the base of the present invention may be the top frame 16 or the top plate 14.

In the above embodiment, the top surface 16b of the front portion 16a of the top frame 16 is formed as an inclined surface. This reduces the possibility of the cooking container coming into contact with the dial knob 34. However, the dial operation device 32 of the present embodiment can be applied also when the top surface 16b is a horizontal surface.

In the above-described embodiment, the cap unit is exemplified by a member including the dial knob 34 and the cap member 38. Thus, the dial knob 34 can be detached, but the dial knob 34 and the cap member 38 may be integrated.

In the above-described embodiment, the first to third dial-up operating devices 32A to 32C are all configured to be the same, but at least one of them may be different.

(embodiment mode 2)

The overall structure of the heating cooker of the present embodiment will be described with reference to fig. 9 to 11.

The heating cooker includes a top unit 210 and a main unit 220. The top unit 210 includes a top plate 211, an operation unit 212, a frame 215, and a power supply SW. Heat-resistant glass, which is an insulator, is used for the top plate 211. The object 240 to be heated is disposed on the top plate 211. The frame 215 surrounds the outer edge of the top plate 211 and serves as a support portion for attaching the top plate 211 to the main body unit 220. In the present embodiment, the front portion of the frame 215 is raised from the top plate 211 like a bank. Further, the front portion of the frame 215 is inclined so as to become lower from the back side toward the front side. The material of the frame 215 is, for example, metal such as stainless steel. The operation unit 212 includes the dial portions 230a, 230b, and 230c shown in fig. 10; LCD (liquid Crystal display) sections 213a, 213b, 213 c; and led (light Emitting diode) lamps 214a, 214 c. Hereinafter, the dial parts 230a, 230b, and 230c may be collectively referred to as the dial part 230. The LCD units 213a, 213b, and 213c may be collectively referred to as the LCD unit 213. There are cases where the LED lamps 214a, 214c are collectively referred to as LED lamps 214. The toggle part may also be referred to as a toggle-type operating device.

In the present embodiment, there are three dial portions 230 and three LCD portions 213. There are two groups of LED lights 214. The dial 230 is disposed on the frame 215 in front of the top plate 211. The three dial parts 230a, 230b, 230c are arranged in the left-right direction. The left and right dial portions 230a and 230c are for the heating coils 223a and 223 b. The central dial portion 230b is for the grill portion 224 described below. The LCD portions 213a, 213b, and 213c are disposed near the respective dial portions 230a, 230b, and 230 c. The LED lamps 214a and 214c are also disposed near the respective dials 230a, 230b, and 230 c. The LED lamps 214a, 214c include five small lamps, respectively. The five small lamps are turned on according to the heating power of the corresponding heating portions (heating coil 223 and heater 225 described later).

The main body unit 220 includes an inverter circuit 221, a control unit 222, a heating coil 223, and a grill unit 224 shown in fig. 11. The inverter circuit 221 flows a current to the heating coil 223. The control unit 222 controls the inverter circuit 221, the heating coil 223, the grill unit 224, and the operation unit 212. Two heating coils 223 are arranged in the left-right direction. In fig. 9 and 10, the heating coil disposed on the left side is a heating coil 223a, and the heating coil disposed on the right side is a heating coil 223 b. The heating coils 223a and 223b may be collectively referred to as the heating coils 223. The object 240 to be heated is disposed at a position facing the heating coil 223 with the top plate 211 interposed therebetween. The grill 224 includes a storage, and an upper heater 225 and a lower heater 226 disposed in the storage.

In this heating cooker, when the user rotates the dial part 230, a signal corresponding to the dial rotation operation is transmitted from the dial part 230 to the control part 222. When the control unit 222c receives signals from the dial portions 230a and 230c of the dial portion 230, it sends a signal for controlling the heating power to the inverter circuit 221. When the inverter circuit 221 receives a signal from the control unit 222, a current is caused to flow to the heating coil 223 that inductively heats the object 240 in accordance with the signal from the control unit 222. When an electric current flows through the heating coil 223, the object 240 to be heated disposed above the heating coil 223 is heated. When the control unit 222 receives a signal from the dial 230b, the operation of the heater 225 is controlled.

Next, the structure of the dial part 230 will be described with reference to fig. 12. The dial 230 rotates centering on an axis CR perpendicular to the upper surface of the top unit 210 (i.e., the top surface of the frame 215 of fig. 9 in the present embodiment). The dial part 230 has a cylindrical shape. The dial part 230 includes a rotary encoder 231, a dial knob 232, and a click feeling imparting part 233. The rotary encoder 231 rotates about the shaft CR. When the rotary encoder 231 rotates, a signal corresponding to the rotation is output to the control unit 222. The dial knob 232 is disposed on the outer circumference of the rotary encoder 231. The dial knob 232 is substantially cylindrical in shape. The dial knob 232 is formed of a resin material. The click feeling imparting portion 233 includes a spring 233a and a projection 233 b. In the present embodiment, the number of the protrusions 233b is set to three. Each protrusion 233b is fixed to the top unit 210. The projections 233b are disposed below the rotary encoder 231 with a predetermined interval. The spring 233a is fixed to a lower portion of the rotary encoder 231.

When the user rotates the dial part 230 via the dial knob 232, the rotary encoder 231 rotates. When the rotary encoder 231 rotates, the springs 233a come into contact with the respective protrusions 233b and are elastically deformed. When the rotary encoder 231 rotates by a predetermined angle or more, the spring 233a does not continue its elastic deformation and performs a reverse rotation operation. At this time, a click feeling is generated. The number of times the spring 233a makes contact with the projection 233b to perform the reverse rotation operation matches the number of clicks. When the rotary encoder 231 rotates, a signal corresponding to the rotation amount is sent to the control unit 222. In the case of the present embodiment, a signal corresponding to the number of clicks is sent to the control unit 222.

Next, a specific relationship between the amount of rotation of the dial part 230 (dial parts 230a and 230c) for the heating coil 223 and the output level of the heating coil 223 will be described with reference to fig. 13. In the present embodiment, the control unit 222 can change the output of the heating coil 223 in a stepwise manner according to the amount of rotation of the dial part 230 (dial parts 230a and 230 c).

For example, in the present embodiment, the output level of the heating coil 223 is set to level 1 to level 10 during heating of the iron-based pan. The level 1 is an example of the first output of the present invention, and the level 2 is an example of the second output of the present invention. The level 10 is an example of the maximum output of the present invention. Specifically, for example, level 1 corresponds to 79W, level 2 corresponds to 201W, level 3 corresponds to 330W, level 4 corresponds to 460W, level 5 corresponds to 660W, level 6 corresponds to 960W, level 7 corresponds to 1410W, level 8 corresponds to 1960W, level 9 corresponds to 2460W, and level 10 corresponds to 2960W.

When the heating coil 223 is in the stopped state, if the dial part 230 (the dial parts 230a and 230c) is rotated rightward by 5 clicks, the heating coil 223 is controlled to be at level 1. The stopped state is a state in which the output of the heating coil 223 is zero. In the level 1 state, when the dial part 230 (the dial parts 230a and 230c) is rotated rightward by 2 clicks, the heating coil 223 is controlled to be in the level 2.

Similarly, the heating power level of the heating coil 223 is controlled to increase by one step every 2 clicks of the dial part 230 rotating to the right. Further, in a state where the heating coil 223 is at level 10, when the dial part 230 (the dial parts 230a and 230c) is rotated leftward by 2 clicks, the heating coil 223 is controlled to be at level 9.

In the state of level 9, when the dial part 230 (the dial parts 230a and 230c) is rotated leftward by 2 clicks, the heating coil 223 is controlled to be level 8. Similarly, the heating power level of the heating coil 223 is controlled to be lowered by one step every time the dial part 230 is rotated leftward by 2 clicks. In the level 1 state, when the dial part 230 (the dial parts 230a and 230c) is rotated leftward by 3 clicks, the heating coil 223 is controlled to be in a stopped state.

In the present embodiment, the control unit 222 is configured to select the number of clicks, which is the rotation amount when the output is changed by one step (one step), from among a plurality of values, for example, three values, in the level 1 to the level 10. For example, when the user vertically presses the central paddle part 230b for grilling toward the top surface of the frame 15 in the initial mode and then rotates the paddle part 230b to either the left or the right, the heating cooker is shifted to the function setting mode. Then, by rotating the grill center dial 230b, various setting menus can be selected. For example, when the center jog portion 230b for grilling is rotated rightward by 1 click, a main screen for selecting a jog operation speed as shown in fig. 14 is displayed on the center LCD portion 213b for grilling. When the grill paddle 230b is pressed in this state, a selection screen of the speed of the paddle operation as shown in fig. 15 is displayed on the grill LCD 213 b. When the toggle operation "slow" is selected, the number of clicks for changing the output by one stage (one rank) is set to 3. When the dial operation "standard" is selected, the number of clicks for which the output is changed by one stage (one level) is set to 2. When the dial operation "fast" is selected, the number of clicks for which the output is changed by one stage (one level) is set to 1. This enables adjustment of the heating power operation speed preferred by the user, and thus can cope with various preferences of the user.

As described above, in the present embodiment, the number of clicks (an example of the amount of rotation) when the heating coil 223 changes from the stopped state to the level 1 is fixed to 5, and the user cannot select the number of clicks. That is, the rotation amount (e.g., the number of clicks) of the dial portion when the output of the heating coil 223 changes from the level 1 or higher to the larger output is different from the rotation amount (e.g., the number of clicks) of the dial portion when the stop state changes to the level 1, and selection thereof is not possible. Thus, when the heating coil 223 is changed from the stopped state to the level 1, the user always needs to rotate the dial part 230 by 5 clicks. Therefore, the possibility that the user forgets the rotation amount required for starting heating when adjusting the dial operation speed can be reduced, and the safety can be improved.

Similarly, in the present embodiment, the number of clicks when the heating coil 223 is changed from the level 1 to the stopped state is fixed to 3, and the user cannot select the number. This reduces the possibility that the user forgets the rotation amount required for stopping heating, thereby improving safety.

In the present embodiment, the number of clicks (an example of the amount of rotation) of the dial portion at the time of one-step increase in the output is configured to be constant (2 clicks in fig. 13) in each state from level 1 to level 9. Accordingly, the relationship between the phase change of the output of the heating coil 223 and the rotation amount of the dial part 230 is simplified, and the usability of the user can be improved.

Similarly, in the present embodiment, the number of clicks (an example of the amount of rotation) of the dial portion when the output is lowered by one step is configured to be constant (2 clicks in fig. 13) in each state from the level 10 to the level 2. Accordingly, the relationship between the phase change of the output of the heating coil 223 and the rotation amount of the dial part 230 is simplified, and the usability of the user can be improved.

In the present embodiment, as shown in fig. 13, the rotation amount (e.g., the number of clicks) of the dial portion when the heating coil 223 changes from the stopped state to the level 1 is not only fixed but also larger than the rotation amount (e.g., the number of clicks) of the dial portion when the output of the heating coil 223 changes from the level 1 to a larger level. Thus, when the user supplies current to the heating coil 223, the dial portion needs to be rotated largely first. Therefore, an effect of preventing the unintended start of heating by the user can be obtained, and the usability of the user can be further improved.

In the present embodiment, the dial portion 230 is set so that the amount of rotation required when the heating power of the heating coil 223 changes from the level 1 to the stopped state is larger than the amount of rotation required when the heating power level is lowered by one step from another level (for example, when the heating power level changes from the level 6 to the level 5). This makes it difficult to rotate to level 0 at a time, prevents heating from being stopped by an unintended motion of the user, and further improves the usability of the user. For example, the number of clicks required when the heating power is changed from level 1 to level 0 may be fixed to 5, and the number of clicks required when the heating power level is lowered by one step from another level (for example, when the heating power level is changed from level 6 to level 5) may be selected from three clicks of 1 to 3.

When the heating coil 223 is brought from the level 1 to the stopped state, the heating coil 223 is brought to the stopped state when the dial is not rotated for 0.5 seconds, for example, and then the dial is rotated again. For example, when the heating power is reduced from the heating power of class 2 or more, the user may rotate the dial portion too much. In contrast, by adopting a configuration in which the heating power cannot be lowered to the stopped state at a time, it is possible to prevent the heating from being stopped due to an unintended operation of the user, and to further improve the usability of the user. Further, although 1 second is exemplified as the constant period during which the dial portion does not rotate, a balance between convenience and malfunction suppression may be obtained, and it may be set to be appropriately between 0.2 seconds and 3 seconds.

In the present embodiment, the control unit 222 controls the operation of the grill unit 224 according to the rotation of the dial 230b at the center for grilling. When the grill portion 224 is not energized and the grill center knob portion 230b is rotated in a first direction (e.g., right direction), the controller 222 causes the grill LCD portion 213b to display the manual menu shown in fig. 16. When the dial portion 230b is rotated in a second direction (for example, the left direction) different from the first direction, the control portion 222 causes the LCD portion 213b to display the automatic menu shown in fig. 17. Thus, as compared with a case where all cooking menus are selected in only one direction, the selection of the cooking menu can be performed quickly, and the usability of the user can be further improved. When the manual menu is selected, the user needs to manually adjust the heating power of the upper heater 225 and the lower heater 226 of the grill portion 224. When the automatic menu is selected, the control unit 222 automatically controls the heating power of the upper heater 225 and the lower heater 226 according to the operation.

The automatic menu includes a plurality of practices. Many cooking methods include, for example, meat loaf, dry goods, and marinating and baking. The control unit 222 is configured not to receive a change to another course by rotating only the paddle 230b at the center for grilling when one course (for example, a meat chunk) of a plurality of courses is selected. This prevents unintended operation by the user, thereby further improving the usability of the user.

Other embodiments will be described below.

In the present embodiment, the number of heating coils is two, but the number is not limited to two.

In the present embodiment, the dial parts 230a and 230c for the heating coils and the dial part 230b for the grill are all dial parts that can provide a click feeling by rotation, but at least one of them may be a dial part that does not provide a click feeling. In this case, the control part 222 detects the rotation amount of the dial part by the rotation angle instead of the number of clicks.

In the present embodiment, the heating cooker is a heating cooker having the grill portion 224, but the grill portion 224 may be omitted. In addition, the grill portion 230b may be omitted regardless of the presence or absence of the grill portion 224.

In the present embodiment, the speed of the dial operation is selected from three stages, i.e., fast, normal, and slow, but the speed is not limited to three stages. For example, the selection may be made from two stages of "normal" and "slow", or from four or more stages.

In the present embodiment, the number of clicks of the click portion required to change the heating coil 223 from the stopped state to the level 1 is set to be not selectable and fixed to 5. Similarly, the number of clicks of the dial portion required to change the heating coil 223 from the level 1 to the stopped state may be set to be selectable.

In the present embodiment, the operating speed of the dial portion can be selected in both the rising and falling changes of the heating power level, but the operating speed of the dial portion can be selected only in either the rising or falling change. Further, the operating speed of the dial portion in the change of the heating power level may be independently selected.

In the present embodiment, the controller 222 causes the grill LCD portion 213b to display the manual menu shown in fig. 16 when the grill center dial portion 230b is rotated in the first direction (for example, the right direction). Similarly, when the dial part 230b is rotated in a second direction (for example, the left direction) different from the first direction, the control part 222 causes the LCD part 213b to display the automatic menu shown in fig. 17.

In the present embodiment, the induction heating cooker is exemplified as the heating cooker, but the paddle parts 230a and 230c of the present invention can be applied to heating cookers such as gas stoves. That is, the heating cooker may include: the heating apparatus includes a heating unit, a dial unit that is rotated to receive an operation of the heating unit, and a control unit that changes heating power of the heating unit in stages according to an amount of rotation of the dial unit. The heating unit is, for example, a furnace burner. The control unit may be configured to select the rotation amount of the dial portion when the heating power is changed by one stage from a plurality of values. Since the user can select the heating power operation speed of the dial part, the use convenience of the user is improved.

Industrial applicability

The utility model discloses can be applied to the induction heating cooking device that heating portions such as heating coil arranged along left right direction.

Claims (18)

1. A heating cooker is characterized by comprising:

a housing;

a top plate disposed above the casing and having a placement surface on which a cooking container is placed;

a top frame attached to the housing while holding an outer peripheral edge of the top plate, a front side portion of the top frame including a top surface that is an inclined surface that descends from a position higher than a placement surface of the top plate toward the front;

a first heating unit and a second heating unit which are accommodated in the housing so as to be arranged below the top plate in a left-right direction, and which inductively heat the cooking container; and

and a first toggle operation device and a second toggle operation device each having a toggle knob disposed on the top surface of the top frame and configured to adjust heating of the first heating unit and the second heating unit, respectively.

2. The heating cooker according to claim 1,

the dial knob of each of the first dial type operating device and the second dial type operating device is provided on the top surface of the top frame so as to overlap a first imaginary straight line and a second imaginary straight line that pass through the center of each of the first heating unit and the second heating unit and extend in the front-rear direction in a plan view.

3. The heating cooker according to claim 2,

when viewed from above, the respective toggle knobs of the first and second toggle operation devices are disposed on the top surface of the top frame such that the rotation center lines of the respective toggle knobs of the first and second toggle operation devices are located between the first and second imaginary straight lines.

4. The heating cooker according to claim 1,

the dial knob is provided to the top surface of the top frame in such a manner that a rotation center line of the dial knob passes through a portion of the top surface located at a front side with respect to a center line between upper and lower ends of the top surface of the top frame.

5. The heating cooker according to claim 1,

the first toggle operation device and the second toggle operation device have a button structure for moving the toggle knob forward and backward with respect to the top surface of the top frame.

6. The heating cooker according to claim 1,

the first toggle type operating device and the second toggle type operating device comprise rotary encoders, the rotary encoders are provided with input shafts clamped with the toggle knobs,

the toggle knob is attachable to and detachable from the input shaft of the rotary encoder.

7. The heating cooker according to claim 1,

the first toggle operating device and the second toggle operating device are configured such that the toggle knob can be rotated without limitation,

the heating cooker includes a display device that is provided on the top surface of the top frame and displays at least one of a heating power level and a heating temperature of the first heating unit and the second heating unit.

8. The heating cooker according to claim 7,

the display device is a liquid crystal display device.

9. The heating cooker according to claim 7,

the first and second toggle operation devices have a timer setting function of setting heating time of the first and second heating portions via the toggle knob,

an operation button for switching to the timer setting function is provided on the top surface of the top frame.

10. The heating cooker according to claim 1,

the heating cooker includes an indicator for indicating the heating levels of the first heating unit and the second heating unit,

the indicator includes a plurality of LEDs that are provided on the top surface of the top frame so as to partially surround the dial knob and are lit at a brightness corresponding to the heating levels of the first and second heating portions.

11. The heating cooker according to any one of claims 1 to 10, characterized by comprising:

a barbecue cabinet housed in the housing; and

a third toggle operating device for adjusting a temperature within the barbecue cabinet and comprising a toggle knob disposed on the top surface of the top frame.

12. A heating cooker is characterized by comprising:

a body unit including a heating portion and a control portion that controls the heating portion; and

a top unit disposed above the body unit,

the top unit includes:

a base having a through hole formed therein; and

a toggle operating device protruding from a top surface of the base perpendicularly to the top surface,

the toggle type operation device includes:

an encoder inserted into the through hole and outputting a signal corresponding to the rotation to the control unit;

a sealing member disposed in a gap between the encoder and the through hole; and

a cap unit covering the encoder and the outer periphery of the portion of the sealing member exposed from the top surface,

a protrusion portion protruding outward and contacting an inner peripheral surface of the cap unit is provided on an outer peripheral surface of the sealing member above the top surface.

13. The heating cooker according to claim 12,

the sealing member is cylindrical with an axis perpendicular to the top surface as a center,

the sealing member includes:

a cylindrical small-diameter portion centered on the shaft; and

a cylindrical large diameter portion disposed at an upper end of the small diameter portion and centered on the shaft,

the protrusion is a part of the large diameter portion.

14. The heating cooker according to claim 12,

the cap unit includes:

a cap member that covers the encoder and the outer periphery of the portion of the sealing member exposed from the top surface; and

a toggle knob covering an outer periphery of the cap member,

the dial knob is configured to be attachable to and detachable from the cap member.

15. The heating cooker according to claim 12,

a support portion for supporting the dial-up operation device is disposed below the base,

a concave portion is provided on the upper surface of the support portion,

a convex portion combined with the concave portion is provided on a lower surface of the seal member.

16. The heating cooker as claimed in any one of claims 12 to 15,

the toggle operation device includes a movable portion that advances and retreats with respect to the top surface, and a switch that switches ON/OFF by the advance and retreat of the movable portion.

17. The heating cooker as claimed in claim 16,

the heating cooker includes a fixing portion that is disposed on the sealing member and fixed to an outer peripheral surface of the encoder.

18. A heating cooker is characterized by comprising:

a heating section;

a dial-up operation device that receives an operation of the heating unit by rotation; and

a control unit that changes an output of the heating unit in stages according to a rotation amount of the dial-up operation device,

the control unit is configured to select a rotation amount of the dial operation device when the output is changed by one step from a plurality of values.

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