JP7223419B2 - heating cooker - Google Patents

Description

The present invention relates to a heat cooker.

A heating cooker having a plurality of sensors on the lower side of a top plate is known. Patent Literature 1 discloses a gas stove with an optical sensor. The optical sensor is a reflective ranging sensor. In the gas stove, the optical sensors are provided directly under the top plate and arranged side by side in the left-right direction in front of the stove. The optical sensor can detect the distance between the foreign object above. The gas stove closes the solenoid valve to reduce the gas flow rate and reduce the heating power of the burner when the distance between the foreign matter detected by the optical sensor is less than a predetermined working distance.

JP 2018-128161 A

In some cases, the sensor is arranged so that the area in which the distance to the foreign object can be detected (hereinafter referred to as "detection area") is asymmetric. In some cases, this asymmetry can be used to advantage by adjusting the orientation of the sensor so that the position of, for example, the handle of a pot is excluded from the detection area. In this case, the orientation of the sensor with respect to the top plate is important for proper control of the detection area.

Moreover, when the sensor is provided on the top plate as described above, the temperature of the sensor arranged on the grill may rise. On the other hand, a method is known in which an air flow path is provided to enclose the sensor, and the sensor is cooled by air flowed through the flow path by a cooling fan. In this case, it is preferable that the flow path be narrow in order to increase the cooling performance of the sensor by flowing the air at a high flow velocity.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heating cooker in which an operator can easily fix a sensor in a correct orientation and at the same time narrow a flow path for cooling the sensor.

The heating cooker according to claim 1 comprises a housing, a top plate mounted on the housing and closing an upper opening of the housing, and a first distance measuring device arranged below the top plate. A heating cooker comprising a sensor, a second ranging sensor, and a flow path containing the first ranging sensor and the second ranging sensor, and a cooling section in which air flows in the flow path by a fan The first distance measuring sensor includes a first base portion including a light emitting portion and a light receiving portion, and a first convex portion protruding from the first base portion, and the second distance measuring sensor includes a light emitting portion and a light receiving portion. and a second convex portion projecting from the second base portion, wherein the cooling portion is a pair of wall portions facing each other, the first cooling portion being arranged on one side in the facing direction a wall portion and a second wall portion disposed on the other side in the facing direction, wherein the first wall portion and the second wall portion are provided between the first wall portion and the second wall portion; The first distance measuring sensor is fixed in the flow path in a direction in which the first convex portion protrudes toward one side of the facing direction with respect to the first base portion. 1 fixing portion, and a second fixing portion for fixing the second distance measuring sensor in the flow path in such a direction that the second convex portion protrudes toward the other side of the facing direction with respect to the second base portion. and the gap width between the first base portion and the first wall portion in a state where the first distance measuring sensor is fixed to the first fixing portion is equal to the gap width between the first base portion and the second wall portion. The second base portion and the second wall in a state in which the gap is larger than the width of the gap, the first convex portion does not interfere with the first wall portion, and the second range-finding sensor is fixed to the second fixing portion. is larger than the gap width between the second base portion and the first wall portion, the second convex portion does not interfere with the second wall portion, and the first convex portion When it is assumed that the first distance measuring sensor is fixed to the first fixing portion in a direction projecting to the other side of the facing direction, the first interference portion that interferes with the first convex portion, and the second a second interfering portion that interferes with the second convex portion when it is assumed that the second distance measuring sensor is fixed to the second fixing portion in a direction in which the convex portion protrudes toward one side of the facing direction; It is characterized by

3. The cooking device according to claim 2, wherein the width of the gap between the first base portion and the first wall portion in a state in which the first distance measuring sensor is fixed to the first fixing portion is equal to the first The width of the gap between the second base and the second wall when the second distance measuring sensor is fixed to the second fixing part and is configured to be larger than the amount of projection of the convex part is , and the first distance measuring sensor is fixed to the first fixing portion in a direction in which the first convex portion protrudes toward the other side of the facing direction. The gap width between the first base portion and the second wall portion in an assumed state is configured to be smaller than the projection amount of the first convex portion, and the second wall portion faces the first base portion. The first interfering portion is defined as the first interfering portion, and the second distance measuring sensor is assumed to be fixed to the second fixing portion in a direction in which the second convex portion protrudes to one side in the facing direction. A gap width between two base portions and the first wall portion is configured to be smaller than a protrusion amount of the second convex portion, and a portion of the first wall portion facing the second base portion is the second wall portion. Preferably, it is an interference portion.

It is preferable that the plurality of fixing portions of the heating cooker according to claim 3 are arranged in a direction along the flow path.

The width between the first wall portion and the second wall portion of the heating cooker according to claim 4 is greater than the portion where the first base portion and the second base portion are arranged. The portion between the second bases should be smaller.

According to the heating cooker of claim 1, in the flow path of the cooling unit, the gap width between the first base and the first wall is equal to the gap width between the first base and the second wall bigger than Further, in the flow path of the cooling portion, the width of the gap between the second base and the second wall is larger than the width of the gap between the second base and the first wall. When the first ranging sensor and the second ranging sensor are fixed in opposite directions in the facing direction, the first convex portion of the first ranging sensor interferes with the first interfering portion, and the second ranging sensor interferes with the first interference portion. The second convex portion of the sensor interferes with the second interference portion. Therefore, it is suppressed that the operator fixes the first range sensor and the second range sensor in opposite directions in the facing direction. Therefore, the operator can easily fix the distance measuring sensor in the correct orientation.

According to the heating cooker according to claim 2, the first and second distance sensors are fixed in opposite directions in the facing direction, respectively, by the first wall and the second wall. can be suppressed.

According to the heating cooker according to claim 3, the portion of the flow path in which at least the plurality of fixing portions are accommodated extends along the arrangement direction of the plurality of fixing portions. The air flowing through the flow path flows smoothly without being obstructed by walls or the like at this portion. Therefore, the heating cooker can appropriately cool the plurality of distance measuring sensors by allowing air to flow smoothly through the flow path.

According to the heating cooker of claim 4, the flow path of the cooling section can be made smaller in the portion between the first range sensor and the second range sensor. Therefore, the flow velocity of the air flowing through the flow path can be increased, so that the distance measuring sensor can be efficiently cooled by the air.

1 is a perspective view of a stove 1; FIG. 2 is a plan view of the stove 1; FIG. 3 is a perspective view showing a state in which a left front panel 80 and a right front panel 90 are connected via a left duct portion 71 and a right duct portion 72 to a sensor case 40 fixed to the lower surface of the top plate 3. FIG. 3 is an exploded perspective view of the top plate 3, the electrical board 100, and the sensor case 40. FIG. 4 is a perspective view of the upper surface side of the sensor case 40. FIG. 4 is a perspective view of the lower surface side of the sensor case 40. FIG. 4 is a plan view of the lower surface side of the sensor case 40. FIG. 4 is an exploded perspective view of the sensor 30, the holding portion 76, and the sensor case 40. FIG. 8 is an enlarged plan view of a portion surrounded by a two-dot chain line in FIG. 7; FIG.

Embodiments of the present invention will be described below. Unless there is a specific description, the structure of the apparatus described below is merely an example of explanation and not intended to be limiting. The drawings are used to explain technical features that can be employed by the present invention.

<Overview of Stove 1>
The structure of the stove 1 will be described with reference to FIGS. 1 to 3. FIG. The stove 1 shown in FIG. 1 is a built-in stove. A stove 1 includes a housing 2 and a top plate 3. A top plate 3 is placed on the upper side of the housing 2 . The housing 2 has an opening (not shown) at the top. The top plate 3 closes the opening of the housing 2 from above. The top plate 3 has a body plate 3A made of glass and a fixing portion 3B (see FIG. 3) fixed to the lower surface of the body plate 3A. A left burner 4 is provided on the left side of the upper surface of the main body plate 3A, a right burner 5 is provided on the right side of the upper surface, and a grill exhaust port 7 is provided on the rear side of the upper surface. The lower surface of the main body plate 3A is printed with non-transmissive printing that is partially transmissive. A grill door 8 is provided at the center of the front surface of the housing 2 so as to be able to be pulled out toward the front side. The grill door 8 opens and closes a grill opening (not shown) on the front side of the grill storage provided inside the housing 2 . A handle 8A is provided on the upper part of the front surface of the grill door 8 so as to protrude forward. On the front surface of the housing 2, decorative plates 6A and 6B are attached to the upper and lower left sides of the grill door 8, and decorative plates 6C and 6D are attached to the upper and lower right sides.

A left front panel 80 and a right front panel 90 shown in FIG. 3 are each fixed to the housing 2 . As shown in FIG. 1, the power switch 19 provided in the upper front portion of the right front panel 90 protrudes forward from an opening 66 in the upper front portion of the decorative panel 6C. When the decorative plates 6A to 6D are removed from the front surface of the housing 2, the front surfaces of the left front panel 80 and the right front panel 90 shown in FIG. 3 are exposed. An air inlet (not shown) is provided in the front lower portion of each of the left front panel 80 and the right front panel 90 . The left and right air inlets bring in outside air.

As shown in FIG. 2, a left operating section 11 for operating the left burner 4 is provided in front of the left burner 4 on the front side of the upper surface of the main body plate 3A of the top plate 3. is provided with a right operating portion 12 for operating the right burner 5 . The left operation unit 11 includes a plurality of reception units that accept operations such as ignition, extinguishing, and increase/decrease of thermal power of the left burner 4 by touch with a fingertip, and a display unit that lights or blinks according to timer time, usage state, etc. etc. are provided. Similarly to the left operation unit 11, the right operation unit 12 is also provided with a plurality of reception units, a display unit, and the like corresponding to the operation of the right burner 5. FIG. On the front side of the central portion sandwiched between the left burner 4 and the right burner 5, a grill light emitting display portion 13 is provided. The grill light-emitting display section 13 is provided with a display section that lights up while the grill is in use. In the left operation unit 11, the right operation unit 12, and the grill light-emitting display unit 13, reception units are buttons, marks, symbols, or the like printed on the top plate 3 to indicate the positions of touch operations by the user. The display portion is a non-printing area of the main body plate 3A of the top plate 3 and has transparency. Hereinafter, the left operating section 11, the right operating section 12, and the grill light-emitting display section 13 will be collectively referred to as the "input/output section 14".

An electrical board 100 (see FIG. 4) is attached to the front side portion of the lower surface of the main body plate 3A of the top plate 3 with an adhesive, double-sided tape, or the like so as to correspond to the input/output section 14 provided on the upper surface. be. A sensor case 40 is fixed via a fixing portion 3B (see 4) so as to enclose the electrical board 100 from below, and is supported on the lower side of the top plate 3. As shown in FIG. The sensor case 40 encloses the electrical board 100 in a space formed between the sensor case 40 and the top plate 3 and supports the electrical board 100 attached to the lower surface of the top plate 3 from below.

As shown in FIG. 2, on the rear side of the left operating section 11, there is provided a sensor window section 15 having a substantially arc shape in plan view. A window portion 16 is provided, and a sensor window portion 17 having a substantially rectangular shape in a plan view is provided on the rear side of the grill light-emitting display portion 13 . The sensor windows 15 to 17 are non-printing areas of the main body plate 3A of the top plate 3 and have transparency. Below the sensor window 15, sensors 31 to 34 are arranged from left to right. Below the sensor window 16, sensors 35 to 38 are arranged from left to right. A sensor 39 is arranged below the sensor window 17 . The sensors 31 to 39 are general distance measuring sensors capable of measuring the distance to foreign matter positioned above, such as infrared sensors. The sensor case 40 has a sensor housing portion 45 (see FIG. 6), which will be described later, and the sensors 31 to 39 are contained in the sensor housing portion 45 .

<Electrical board 100>
As shown in FIG. 4, the electrical substrate 100 is formed by stacking a light guide plate, a proximity sensor, and a diffusion plate on the upper surface of a rectangular substrate body 100A elongated in the left-right direction. A plurality of LEDs are mounted on the upper surface of the substrate body 100A. The light guide plate is provided to guide upward the light emitted from the plurality of LEDs of the substrate body 100A and prevent the light from diffusing. The proximity sensor is a known capacitance type proximity sensor provided to detect a user's touch operation on the upper surface of the main body plate 3A of the top plate 3 . A diffusion plate is provided to diffuse the light emitted from the plurality of LEDs 21 of the substrate body 100A.

The electrical board 100 is attached to the lower surface of the main body plate 3A of the top plate 3. As shown in FIG. The plurality of LEDs and proximity sensors of the electrical board 100 are arranged below the corresponding input/output portions 14 of the main body plate 3A of the top plate 3 . Therefore, for example, light emitted from the plurality of LEDs of the electrical board 100 is transmitted through the display section of the input/output section 14 and can be emitted upward from the top plate 3 . Also, the proximity sensor of the electrical board 100 can detect a touch operation performed by the user on the reception section of the input/output section 14 .

<Sensor case 40>
As shown in FIGS. 3 and 4, the sensor case 40 is a resin structure extending in the left-right direction. The sensor case 40 has a body portion 41 . The main body portion 41 is a case body extending in the horizontal direction in a plan view. As shown in FIG. 3 , a substantially cylindrical left duct portion 71 is connected to the left end portion of the sensor case 40 and extends vertically between it and the air inlet of the left front panel 80 . A cooling fan (not shown) is attached inside the left duct portion 71 . Cooling air taken into the air inlet of the left front panel 80 by the cooling fan is supplied to the sensor case 40 via the left duct portion 71 . A substantially tubular right duct portion 72 is connected to the right end portion of the sensor case 40 so as to extend vertically between it and the air inlet of the right front panel 90 . A cooling fan (not shown) is attached inside the right duct portion 72 . Cooling air taken into the air inlet of the right front panel 90 by the cooling fan is supplied to the sensor case 40 via the right duct portion 72 . The supplied cooling air cools the electrical board 100 and the sensors 31 to 39 (see FIGS. 4 to 7) in the sensor case 40. FIG.

As shown in FIGS. 5 to 7, the body portion 41 of the sensor case 40 includes a substrate accommodating portion 44 and a sensor accommodating portion 45. As shown in FIGS. 5 corresponds to the upper surface of the sensor case 40. As shown in FIG. 6 and 7 corresponds to the lower surface of the sensor case 40. As shown in FIG. As shown in FIG. 5 , the substrate housing portion 44 corresponds to the front portion of the main body portion 41 and has a cover portion 56 and a peripheral wall portion 57 . The covering portion 56 is formed in a substantially rectangular shape elongated in the horizontal direction in a plan view, and perpendicular to the vertical direction. The covering portion 56 faces the lower surface of the main body plate 3A of the top plate 3. As shown in FIG. The peripheral wall portion 57 extends upward from the peripheral end portion of the covering portion 56 . The substrate accommodating portion 44 is formed in a box-like shape that opens upward, and the electrical substrate 100 (see FIG. 4) attached to the lower surface of the main body plate 3A of the top plate 3 is contained inside.

A left inlet 52 is provided at the left end of the covering portion 56 of the board housing portion 44 , and a right inlet 53 is provided at the right end. The left inlet 52 communicates with the upper end of the vertically extending left cylindrical portion 42 . The right inlet 53 communicates with the upper end of the vertically extending right cylindrical portion 43 . Front discharge ports 54A and 54B aligned in the left-right direction are provided in the front portion of the covering portion 56 of the substrate accommodating portion 44 at the center in the left-right direction. An opening 55 is provided behind the front discharge port 54A. Substrate flow paths 50A and 50B are formed inside the substrate housing portion 44 . The cooling air that has flowed into the substrate flow path 50A from the left inlet 52 flows and is discharged from the front side outlet 54A. The cooling air that has flowed into the substrate flow path 50B from the right inlet 53 flows and is discharged from the front side outlet 54B.

As shown in FIG. 6 , the sensor housing portion 45 corresponds to the rear portion of the main body portion 41 and is formed in an elongated wave shape in which two circular arcs in bottom view are aligned in the left-right direction. The sensor housing portion 45 has a case portion 60A and a lid portion 60B. The case portion 60A is formed in a box shape that opens downward. The lid portion 60B covers the opening of the case portion 60A from below. Hereinafter, the arcuate portion on the left side of the case portion 60A will be referred to as a "left case portion 291". A right arcuate portion of the case portion 60A is referred to as a "right case portion 292". A central portion sandwiched between the left case portion 291 and the right case portion 292 is referred to as a "center case portion 293". A sensor flow path 60</b>C through which cooling air flows is formed in the left case portion 291 . A sensor flow path 60</b>D through which cooling air flows is formed in the right case portion 292 .

As shown in FIG. 7, the arc formed along the left case portion 291 is called "left arc R1", and the arc formed along the right case portion 292 is called "right arc R2". A radial direction with the center of the left circular arc R1 as a reference is referred to as a "facing direction D1". In the opposing direction D1, the side facing outward from the center of the left circular arc R1 is called "one side of the opposing direction D1", and the opposite side of the opposing direction D1 is called "the other side of the opposing direction D1". A radial direction with the center of the right circular arc R2 as a reference is referred to as a "facing direction D2". In the opposing direction D2, the side facing outward from the center of the right circular arc R2 is called "one side of the opposing direction D2", and the opposite side of the opposing direction D2 is called "the other side of the opposing direction D2". One side of each of the opposing directions D1 and D2 corresponds to the front side in FIG. 7, and the other side of each of the opposing directions D1 and D2 corresponds to the rear side of FIG.

As shown in FIGS. 6 and 7, the left case portion 291 has a bottom portion 29A, a first wall portion 23 and a second wall portion 24. As shown in FIGS. The right case portion 292 has a bottom portion 29B, a first wall portion 25 and a second wall portion 26. As shown in FIG. As shown in FIG. 7, the bottom portion 29A of the left case portion 291 extends while curving along the left circular arc R1. The first wall portion 23 and the second wall portion 24 of the left case portion 291 each extend downward from the bottom portion 29A and face the opposing direction D1. The first wall portion 23 is arranged on one side in the facing direction D1. The second wall portion 24 is arranged on the other side in the facing direction D1. The sensor flow path 60</b>C is formed between the first wall portion 23 and the second wall portion 24 of the left case portion 291 . The sensor flow path 60C extends along the first wall portion 23 and the second wall portion 24 in the same direction as the left circular arc R1.

As shown in FIG. 7, the spacing of the sensor flow path 60C in the opposing direction D1 (hereinafter referred to as "the width of the sensor flow path 60C") is narrowed substantially at the center in the direction along the left circular arc R1. The flow velocity of the cooling air flowing through the sensor flow path 60C increases in the portion where the width of the sensor flow path 60C is narrowed. In the stove 1, by providing a portion where the width of the sensor flow path 60C is narrowed, the flow velocity of the cooling air is increased to enhance the cooling effect.

Similarly, as shown in FIGS. 6 and 7, the bottom portion 29B of the right case portion 292 extends while curving along the right circular arc R2. The first wall portion 25 and the second wall portion 26 of the right case portion 292 each extend downward from the bottom portion 29B and face the facing direction D2. The first wall portion 25 is arranged on one side in the facing direction D2. The second wall portion 26 is arranged on the other side in the facing direction D2. The sensor flow path 60</b>D is formed between the first wall portion 25 and the second wall portion 26 of the right case portion 292 . The sensor flow path 60D extends along the first wall portion 25 and the second wall portion 26 in the same direction as the right circular arc R2. The bottom portion 29A, the first wall portion 23 and the second wall portion 24 of the left case portion 291 and the bottom portion 29B, the first wall portion 25 and the second wall portion 26 of the right case portion 292 have the same shape.

As shown in FIG. 7, the spacing of the sensor flow path 60D in the opposing direction D2 (hereinafter referred to as "the width of the sensor flow path 60D") is narrowed substantially at the center in the direction along the right circular arc R2. The flow velocity of the cooling air flowing through the sensor flow path 60C rises in the portion where the width of the sensor flow path 60D is narrowed. In the stove 1, by providing a portion where the width of the sensor flow path 60D is narrowed, the flow velocity of the cooling air is increased to enhance the cooling effect.

As shown in FIGS. 6 and 7, the central case portion 293 has a bottom portion 29C, a first wall portion 27, and a second wall portion . The bottom portion 29C extends between the bottom portion 29A of the left case portion 291 and the bottom portion 29B of the right case portion 292. As shown in FIG. The first wall portion 27 and the second wall portion 28 each extend downward from the bottom portion 29C and face each other in the front-rear direction. The first wall portion 27 is arranged on the front side with respect to the second wall portion 28 .

Sensors 31 to 34 are fixed to the bottom portion 29A of the left case portion 291 in order from left to right. Sensors 35 to 38 are fixed to the bottom portion 29B of the right case portion 292 in order from left to right. The sensors 31-34 are included in the sensor channel 60C. Sensors 35-38 are included in sensor channel 60D. A sensor 39 is fixed to the bottom portion 29</b>C of the central case portion 293 . As shown in FIG. 5, the sensors 31 to 39 each have a light emitter 47 and a light receiver 48 . The light-emitting portions 47 and light-receiving portions 48 of the sensors 31-39 are exposed in cylindrical recesses 451 formed in the bottom portions 29A, 29B, and 29C of the case portion 60A. With the sensor case 40 fixed to the fixing portion 3B of the top plate 3, the sensors 31 to 39 are supported directly below the sensor windows 15 to 17 of the main body plate 3A of the top plate 3. FIG. The sensors 31 to 39 are collectively referred to as "sensor 30". Details of the configuration of the sensor 30 will be described later.

As shown in FIG. 8, the bottom portion 29A of the left case portion 291 is provided with a plurality of fixing portions 81. As shown in FIG. The multiple fixing portions 81 include first fixing portions 81A, 81B and second fixing portions 81C, 81D. The first fixing portions 81A, 81B and the second fixing portions 81C, 81D are arranged in this order from the left side to the right side along the left circular arc R1 (see FIG. 7). Also, the first fixing portions 81A and 81B and the second fixing portions 81C and 81D are arranged in a direction along the sensor flow path 60C (see FIG. 6) of the sensor case 40. As shown in FIG. The first fixing portions 81A, 81B and the second fixing portions 81C, 81D are provided for fixing the sensors 31, 32, 33, 34 to the sensor case 40, respectively.

Each fixing portion 81 includes through holes 82A and 82B and screw holes 83 . 82 A of through-holes are provided in the position corresponding to the light emission part 47 (refer FIG. 5) of the sensor 30. As shown in FIG. The through hole 82B is provided at a position corresponding to the light receiving portion 48 (see FIG. 5) of the sensor 30. As shown in FIG. A tubular concave portion 451 shown in FIG. 5 is provided on the upper surface of the bottom portion 29A so as to cover the through holes 82A and 82B. The arrangement order of the through holes 82A, 82B in the direction along the left circular arc R1 (see FIG. 7) is different between the first fixing portions 81A, 81B and the second fixing portions 81C, 81D. In the first fixing portions 81A and 81B, the through hole 82A is provided on the left side with respect to the through hole 82B. In the second fixing portions 81C and 81D, the through hole 82A is provided on the right side with respect to the through hole 82B.

The screw hole 83 is provided on the lower surface of the bottom portion 29A on one side or the other side in the opposing direction D1 (see FIG. 7) with respect to the through holes 82A and 82B. The first fixing portions 81A, 81B and the second fixing portions 81C, 81D are different in the positions where the screw holes 83 are provided with respect to the through holes 82A, 82B. In the first fixing portions 81A and 81B, the screw holes 83 are provided on one side in the facing direction D1 with respect to the through holes 82A and 82B. In the second fixing portions 81C and 81D, the screw holes 83 are provided on the other side in the opposing direction D1 with respect to the through holes 82A and 82B.

Although detailed description is omitted, a plurality of fixing portions 81 (first fixing portion 81A) are arranged on the bottom portion 29B of the right case portion 292 in the same manner as the plurality of fixing portions 81 on the bottom portion 29A of the left case portion 291. , 81B, and second fixing portions 81C, 81D). The first fixing portions 81A, 81B and the second fixing portions 81C, 81D of the right case portion 292 are arranged in this order from left to right along the right circular arc R2 (see FIG. 7). The first fixing portions 81A, 81B and the second fixing portions 81C, 81D are provided for fixing the sensors 35, 36, 37, 38 to the sensor case 40, respectively.

As shown in FIG. 6, the left end portion of the case portion 60A is provided with a forward projecting portion 611 extending toward the board accommodating portion 44 side. The left inlet 52 is arranged on the bottom surface of the forward projecting portion 611 . The left inflow port 52 is arranged above the left cylindrical portion 42 and communicates the substrate accommodating portion 44 and the sensor accommodating portion 45 with each other. A forward projecting portion 621 extending toward the substrate accommodating portion 44 is provided at the right end portion of the case portion 60A. The right inlet 53 is arranged on the bottom surface of the forward projecting portion 621 . The right inlet 53 is arranged above the right cylindrical portion 43 and communicates the substrate accommodating portion 44 and the sensor accommodating portion 45 with each other.

A partition wall 631 extending downward from a position adjacent to the left side of the sensor 39 in the bottom portion 29C of the central case portion 293 partitions the sensor flow paths 60C and 60D. The cooling air that has flowed in from the left inlet 52 flows from the left end to the right end of the sensor flow path 60C. The cooling air that has flowed in from the right inlet 53 flows from the right end to the left end of the sensor flow path 60D.

A left tubular portion 42 extending in the vertical direction is provided at the left end portion of the lid portion 60B. The upper end opening of the left tubular portion 42 is arranged in the forward projecting portion 611 of the case portion 60A and communicates with the left end portion of the sensor flow path 60C. A lower end opening 421 of the left cylindrical portion 42 protrudes downward from the forward protruding portion 611 . A rectangular frame-shaped elastic body 422 is fixed to the lower end opening 421 . The lower end opening 421 of the left cylindrical portion 42 communicates with the outflow port 711 at the upper end of the left duct portion 71 shown in FIG. As shown in FIG. 6, the right end portion of the lid portion 60B is also provided with a right tubular portion 43 extending in the vertical direction. The upper end opening of the right cylindrical portion 43 is arranged in the forward projecting portion 621 of the case portion 60A and communicates with the right end portion of the sensor flow path 60D. A lower end opening 431 of the right cylindrical portion 43 protrudes downward from the forward protruding portion 621 . A rectangular frame-shaped elastic body 432 is fixed to the lower end opening 431 . A lower end opening 431 of the right cylindrical portion 43 communicates via an elastic body 432 with an outlet 721 at the upper end of the right duct portion 72 shown in FIG.

As shown in FIG. 6, a connecting tube 68 in the shape of a substantially square tube projecting downward is provided at the center of the lid portion 60B in the left-right direction. The connection tube 68 communicates with the right end of the sensor flow path 60C and the left end of the sensor flow path 60D. An elastic body 69 having a substantially rectangular frame shape when viewed from the bottom is attached to the lower end portion of the connecting tube 68 protruding downward. A partition wall 681 is provided inside the connection tube 68 . The partition wall 681 partitions the inside of the connection tube 68 into left and right. A lower end portion of the partition wall 681 contacts an upper end portion of the partition wall 631 of the case portion 60A. The connecting tube 68 is attached to the front end of an air flow path (not shown) inside the housing 2 via an elastic body 69 . The air flow path extends forward from the exhaust port 7 of the main body plate 3A of the top plate 3, passes over the grill chamber, and connects to the connection cylinder 68. As shown in FIG.

<Sensor 30, Holding Unit 76>
As shown in FIG. 8, the sensor 30 includes a base portion 73A, a pair of projecting plate portions 73B, and a convex portion 74. As shown in FIG. The base portion 73A has a rectangular parallelepiped shape that is long in one direction. A light emitting portion 47 and a light receiving portion 48 (see FIG. 5) are provided on the upper side of the base portion 73A. The light emitting portion 47 and the light receiving portion 48 are arranged in the longitudinal direction of the base portion 73A. The pair of protruding plate portions 73B protrude outward from both ends in the longitudinal direction of the base portion 73A. The pair of protruding plate portions 73B has through holes penetrating vertically. The convex portion 74 protrudes from one side in the short direction of the base portion 73A. The protruding portion 74 is a connector to which a harness 91 (see FIG. 7) is connected to output the detection result detected by the light emitting portion 47 and the light receiving portion 48 in the base portion 73A.

The holding portions 761 to 764 are provided for fixing the sensor 30 to the fixing portion 81 of the sensor case 40 . The holding portions 761 to 764 are arranged from the left side to the right side along the left circular arc R1 (see FIG. 7). The holding portions 761 to 764 are interposed between the sensors 31 to 34 and the first fixing portions 81A, 81B and the second fixing portions 81C, 81D to hold the sensors 31 to 34. It is fixed to the fixing parts 81A, 81B and the second fixing parts 81C, 81D. Hereinafter, the holding portions 761 to 764 are collectively referred to as "holding portion 76".

The holding portion 76 includes a substantially tubular support 76A partially penetrating in the vertical direction. The base 73A of the sensor 30 enters through the lower opening of the support 76A and is supported within the support 76A. The light-emitting portion 47 and the light-receiving portion 48 of the base portion 73A are exposed from the upper opening of the support 76A. The holding portion 76 further has a pair of holding portions 76B at both ends of the support 76A in the direction along the left circular arc R1 (see FIG. 7). Each of the pair of restraining portions 76B has a columnar shape extending in the vertical direction, and has a screw hole in the center of the lower surface. With the base portion 73A of the sensor 30 supported within the base portion 73A, the through holes of the pair of protruding plate portions 73B of the sensor 30 and the screw holes of the pair of restraining portions 76B are vertically aligned. The sensor 30 is held by the holding portion 76 by screwing the screws inserted through the through holes of the pair of projecting plate portions 73B into the screw holes of the pair of suppressing portions 76B of the holding portion 76. .

The holding portion 76 further has a projecting plate portion 76C projecting from one side or the other side in the opposing direction D1 (see FIG. 7). The protruding plate portions 76C of the holding portions 761 and 762 protrude from the support body 76A to one side in the facing direction D1. The protruding plate portions 76C of the holding portions 763 and 764 protrude from the support body 76A to the other side in the facing direction D1. A through hole penetrating vertically is formed in the projecting plate portion 76C. The holding portion 76 is fixed to the sensor case 40 by screwing a screw inserted through the through hole of the projecting plate portion 76</b>C into the screw hole 83 of the fixing portion 81 of the sensor case 40 .

The base portions 73A of the sensors 31 to 34 are arranged in a row along the left circular arc R1 along which the sensor flow path 60C (see FIG. 6) extends, while being fixed to the sensor case 40 by the holding portion 76. . Further, the sensor 31 fixed to the first fixing portion 81A (see FIG. 8) via the holding portion 761 is arranged such that the convex portion 74 protrudes toward one side of the opposing direction D1 with respect to the base portion 73A. 60C. Similarly, the sensor 32 fixed to the first fixing portion 81B (see FIG. 8) via the holding portion 762 is arranged such that the convex portion 74 protrudes toward one side of the opposing direction D1 with respect to the base portion 73A. It is fixed within channel 60C. On the other hand, the sensor 33 fixed to the second fixing portion 81C (see FIG. 8) via the holding portion 763 is arranged such that the convex portion 74 protrudes toward the other side of the opposing direction D1 with respect to the base portion 73A. 60C. Similarly, the sensor 34 fixed to the second fixing portion 81D (see FIG. 8) via the holding portion 764 is arranged such that the convex portion 74 protrudes toward the other side of the facing direction D1 with respect to the base portion 73A. It is fixed within channel 60C. That is, in the sensors 31 and 32 and the sensors 33 and 34, the directions in which the protrusions 74 protrude from the base 73A are opposite to each other in the opposing direction D1.

Although detailed description is omitted, the holding portion 76 for fixing the sensors 35 to 38 to the fixing portion 81 of the right case portion 292 is arranged in the same arrangement and orientation as the holding portion 76 of the left case portion 291. be. When the sensors 35 to 38 are fixed by the fixing portion 81 in the right case portion 292, the base portions 73A of the sensors 35 to 38 are aligned along the right circular arc R2 along which the sensor flow path 60D (see FIG. 6) extends. are arranged as follows: In the sensors 35, 36 and the sensors 37, 38, the directions in which the protrusions 74 protrude from the base 73A are opposite to each other in the opposing direction D2.

As shown in FIG. 2, with the sensor case 40 fixed to the lower side of the top plate 3, the sensors 31 to 39 are arranged to the lower side of the sensor windows 15 to 17 of the main body plate 3A. Infrared light emitted from the light-emitting portions 47 of the sensors 31-39 can be emitted upward through the sensor windows 15-17. Also, the light receiving portions 48 of the sensors 31 to 39 can receive the infrared light emitted by the light emitting portions 47 through the sensor windows 15 to 17 . For example, when the infrared light emitted by the light emitting unit 47 is reflected by a foreign object and is received by the light receiving unit 48, the sensors 31 to 39 detect the light within a predetermined height range based on the intensity of the reflected light received by the light receiving unit 48. It is possible to detect whether there is a foreign object in the

Note that the sensor 30 held by the holding portion 76 is tilted while the holding portion 76 is fixed to the sensor case 40 via the fixing portion 81 . Therefore, the light emitted from the light emitting portion 47 of the sensor 30 is emitted in a direction inclined forward with respect to the vertically upward direction. The inclination angle of the output direction with respect to the vertical direction is not particularly limited, but is preferably 10° or less, more preferably 5°. The reason why the light emitted from the light emitting part 47 of the sensor 30 is emitted in a direction inclined with respect to the vertical direction is that the reflected light reflected by the range hood that is normally arranged above the stove 1 affects the foreign object detection accuracy of the sensor 30. This is for suppressing influence.

<Positional Relationship Between First Walls 23, 25, Second Walls 24, 26, and Sensor 30>
The positional relationship between the first walls 23, 25, the second walls 24, 26, and the sensor 30 will be described with reference to FIG. In FIG. 9, the harness 91 is omitted. The first wall portion 23 of the left case portion 291 of the sensor case 40 has a first portion 23A, a second portion 23B, and a third portion 23C. The first portion 23A extends rightward from the left end portion of the first wall portion 23 in parallel with the left circular arc R1. The third portion 23C extends leftward from the right end portion of the first wall portion 23 in parallel with the left circular arc R1. The length from the center of the left circular arc R1 to the first portion 23A in the facing direction D1 is longer than the length from the center of the left circular arc R1 to the third portion 23C. The second portion 23B spans between the right end portion of the first portion 23A and the left end portion of the third portion 23C, and extends parallel to the facing direction D1. The second portion 23B is arranged on the left side of the center of the sensor flow path 60C of the left case portion 291 in the left-right direction. The convex portion 74 of the sensor 32 approaches the second portion 23B of the first wall portion 23 to the left.

The second wall portion 24 of the left case portion 291 of the sensor case 40 has a first portion 24A, a second portion 24B, and a third portion 24C. The first portion 24A extends rightward from the left end portion of the second wall portion 24 in parallel with the left circular arc R1. The third portion 24C extends leftward from the right end portion of the second wall portion 24 in parallel with the left circular arc R1. The length from the center of the left circular arc R1 to the first portion 24A in the opposing direction D1 is longer than the length from the center of the left circular arc R1 to the third portion 24C. The second portion 24B spans between the right end portion of the first portion 24A and the left end portion of the third portion 24C, and extends parallel to the facing direction D1. The second portion 24B is arranged on the right side of the center of the sensor flow path 60C of the left case portion 291 in the left-right direction. The convex portion 74 of the sensor 33 approaches the second portion 24B of the second wall portion 24 to the right. The second portion 24B is arranged on the right side of the second portion 23B of the first wall portion 23 .

The gap in the opposing direction D1 between the first portion 23A of the first wall portion 23 and the end portion on one side in the opposing direction D1 of the base portion 73A of the sensor 32 fixed to the first fixing portion 81B is The gap width is written as W11. The gap in the opposing direction D1 between the end portion of the base portion 73A of the sensor 32 on the other side in the opposing direction D1 and the first portion 24A of the second wall portion 24 is referred to as a gap width W12. In this case, the gap width W11 is larger than the gap width W12. The gap in the facing direction D1 between the end portion of the base portion 73A of the sensor 33 fixed to the second fixing portion 81C on one side in the facing direction D1 and the third portion 23C of the first wall portion 23 is The gap width is written as W21. The gap in the opposing direction D1 between the end portion of the base portion 73A of the sensor 33 on the other side in the opposing direction D1 and the third portion 24C of the second wall portion 24 is referred to as a gap width W22. In this case, the gap width W21 is smaller than the gap width W22. Moreover, both the gap widths W11 and W22 are larger than the amount of projection of the convex portion 74 of the sensor 30 . On the other hand, the gap widths W12 and W21 are both smaller than the projection amount of the convex portion 74 of the sensor 30 .

The distance in the opposing direction D1 between the first portion 23A of the first wall portion 23 and the first portion 24A of the second wall portion 24 is denoted as width W31. The distance in the opposing direction D1 between the third portion 23C of the first wall portion 23 and the third portion 24C of the second wall portion 24 is denoted as width W32. The distance in the opposing direction D1 between the third portion 23C of the first wall portion 23 and the first portion 24A of the second wall portion 24 is denoted as width W33. The width W33 is sandwiched between the base portion 73A of the sensor 32 fixed to the first fixing portion 81B and the base portion 73A of the sensor 33 fixed to the second fixing portion 81C in the direction extending along the left circular arc R1. It corresponds to the width between the first wall portion 23 and the second wall portion 24 at the end portion. Widths W31 and W32 are the same and larger than width W33. Therefore, the width of the sensor flow path 60C is narrower at the portion sandwiched between the bases 73A of the sensors 32 and 33 than at other portions.

As shown in FIG. 7, the first wall portion 25 of the right case portion 292 has a first portion 25A, a second portion 25B, and a third portion 25C. The first portion 25A, the second portion 25B and the third portion 25C correspond to the first portion 23A, the second portion 23B and the third portion 23C of the left case portion 291, respectively. The second wall portion 26 has a first portion 26A, a second portion 26B, and a third portion 26C. The first portion 26A, the second portion 26B and the third portion 26C correspond to the first portion 24A, the second portion 24B and the third portion 24C of the left case portion 291, respectively. Although detailed explanation is omitted, gap widths W11, W12, W21, W22 and widths W31, W32, W33 between the first wall portion 25 and the second wall portion 26 and the respective base portions 73A of the sensors 35 to 38 The relationship coincides with the relationship between the gap width and width between the first wall portion 23 and the second wall portion 24 and the base portion 73A of each of the sensors 31-34.

<Arrangement of Harness 91>
As shown in FIG. 7 , the harness 91 is arranged inside the sensor accommodating portion 45 of the sensor case 40 . The harness 91 includes a trunk portion 92 in which a plurality of cables are bundled, and branch portions 93A to 93I branched from the trunk portion 92. As shown in FIG. A trunk portion 92 of the harness 91 is inserted from the left end portion of the sensor housing portion 45 into the inside and extends over the right end portion of the sensor housing portion 45 . More specifically, the core portion 92 of the harness 91 is positioned behind the sensor 31 between the first portion 24A of the second wall portion 24 and the sensor 31, and behind the sensor 32 and the first portion 24A of the second wall portion 24. and the sensor 32, between the sensors 32 and 33, between the sensor 33 and the third portion 23C of the first wall portion 23 in front of the sensor 33, and in front of the sensor 34 and the third portion of the first wall portion 23 23C and the sensor 33, behind the sensor 39 and between the second wall portion 28 and the sensor 39, behind the sensor 35 and between the first portion 23A of the second wall portion 26 and the sensor 35, the sensor 36 and between the first portion 23A of the second wall portion 26 and the sensor 35, between the sensors 36 and 37, and in front of the sensor 37 and between the third portion 25C of the first wall portion 25 and the sensor 37 , and reaches the tip of the sensor accommodating portion 45 .

In other words, the trunk portion 92 of the harness 91 is separated from the sensor 30 by the distance between the base portion 73A of the sensor 30 and the first wall portions 23, 25 and the distance between the base portion 73A of the sensor 30 and the second wall portions 24, 26. It is arranged so as to pass through the narrower one of them. In this case, the core portion 92 of the harness 91 is easily sandwiched between the holding portion 96 holding the sensor 30 and the first wall portions 23 and 25 or the second wall portions 24 and 26, and the sensor housing portion 45 It becomes difficult to come off.

The branch portion 93A extends from the tip of the trunk portion 92 of the harness 91, passes through the left side of the sensor 38, and is connected to the convex portion 74 of the sensor 38 (see FIG. 8). The branch portion 93B branches off from the main portion 92 on the right front side of the sensor 37, passes through the right side of the sensor 37, and is connected to the convex portion 74 of the sensor 37. As shown in FIG. The branch portion 93</b>C branches off from the main portion 92 on the left rear side of the sensor 36 , passes through the left side of the sensor 36 , and is connected to the convex portion 74 of the sensor 36 . The branch portion 93D branches off from the main portion 92 at the right rear of the sensor 35, passes through the right side of the sensor 35, and is connected to the convex portion 74 of the sensor 37. As shown in FIG. The branch portion 93E branches off from the main portion 92 at the right rear of the sensor 39, passes through the right side of the sensor 39, and is connected to the convex portion 74 of the sensor 39. As shown in FIG.

The branching portion 93</b>F branches off from the main portion 92 on the left front side of the sensor 34 , passes through the left side of the sensor 34 , and is connected to the convex portion 74 of the sensor 34 . The branch portion 93</b>G branches off from the main portion 92 on the right front side of the sensor 33 , passes through the right side of the sensor 33 , and is connected to the convex portion 74 of the sensor 33 . The branch portion 93H branches off from the main portion 92 at the left rear of the sensor 32, passes through the left side of the sensor 32, and is connected to the convex portion 74 of the sensor 32. As shown in FIG. The branch portion 93I branches off from the main portion 92 on the right rear side of the sensor 31, passes through the right side of the sensor 31, and is connected to the convex portion 74 of the sensor 31. As shown in FIG.

<Method for Cooling Electrical Board 100 and Sensors 31 to 39>
A control section (not shown) of the stove 1 drives the cooling fans in the left duct section 71 and the right duct section 72 together. Air is sucked from the air inlets of the left front panel 80 and the right front panel 90 according to the driving of the cooling fan. The sucked air flows upward inside the left duct portion 71 and the right duct portion 72 as cooling air supplied toward the sensor case 40 . The cooling air that has flowed through the left duct portion 71 flows inward from the lower end opening 421 of the left tubular portion 42 of the sensor case 40 . The cooling air that has flowed through the right duct portion 72 flows inward from the lower end opening 431 of the right tubular portion 43 of the sensor case 40 .

The cooling air that has flowed into the left tubular portion 42 is split by the left inlet 52 provided in the forward protruding portion 611 into the lower surface side and the upper surface side of the main body portion 41 at a predetermined ratio. On the other hand, the cooling air that has flowed into the right cylindrical portion 43 is also split by the right inlet 53 provided in the forward protruding portion 621 into the lower surface side and the upper surface side of the main body portion 41 at a predetermined ratio. The cooling air that has flowed from inside the left tubular portion 42 to the lower surface side of the main body portion 41 flows into the sensor accommodating portion 45 from the left end side. The cooling air flows through the sensor flow path 60C of the sensor housing portion 45 from the left end side toward the center side. The cooling air that has flowed from inside the right cylindrical portion 43 to the lower surface side of the main body portion 41 flows into the sensor accommodating portion 45 from the right end side. The cooling air flows through the sensor flow path 60C of the sensor housing portion 45 from the right end side toward the center side. These allow the sensors 31 to 39 to be cooled by the cooling air. The cooling air that has flowed through the sensor flow path 60C to the center side flows out to the outside through the connection cylinder 68 provided in the central lid portion 653 . The cooling air that has flowed out through the connecting cylinder 68 is discharged outside through the air outlet 7 through the air flow path above the grill chamber.

The cooling air that has flowed from inside the left cylindrical portion 42 to the upper surface side of the main body portion 41 flows into the substrate accommodating portion 44 from the left end side. The cooling air flows through the substrate flow path 50A of the substrate housing portion 44 from the left end toward the center. The cooling air that has flowed from inside the right tubular portion 43 to the upper surface side of the main body portion 41 flows into the substrate accommodating portion 44 from the right end side. The cooling air flows through the substrate flow path 50B of the substrate housing portion 44 from the right end side toward the center side. With these, the electrical board 100 is cooled by the cooling air. The cooling air that has flowed through the substrate flow paths 50A and 50B toward the center is discharged to the outside from the front discharge port 54B.

<Main actions and effects of the present embodiment>
In the following description, the action and effect of the left case portion 291 of the sensor case 40 will be described as an example, but the same effect can be obtained in the case of the right case portion 292 of the sensor case 40 as well. In the sensor flow path 60C in the left case portion 291 of the sensor case 40, the gap width W11 between the base portion 73A of the sensor 32 and the first portion 23A of the first wall portion 23 is the same as the base portion 73A of the sensor 32 and the second wall. It is longer than the gap width W12 between the portion 24 and the first portion 24A. On the other hand, the gap width W21 between the base portion 73A of the sensor 33 and the third portion 23C of the first wall portion 23 is larger than the width W22 between the base portion 73A of the sensor 33 and the third portion 24C of the second wall portion 24. is also short. When the sensors 31 to 34 are fixed to the first fixing portions 81A, 81B and the second fixing portions 81C, 81D, respectively, the protrusions 74 of the sensors 31, 32 that protrude to one side in the facing direction D1 are attached to the first wall portion. The protrusions 74 of the sensors 33 and 34 that do not interfere with the sensor 23 and protrude to the other side in the facing direction D<b>1 do not interfere with the second wall 24 . On the other hand, if the sensors 31 to 34 were to be erroneously fixed in opposite directions in the opposing direction D1, the bases 73A of the sensors 31 and 32 and the sensors 31 and 32 of the second wall 24 The distance between the base portion 73A and the first portion 24A facing the other side in the facing direction D1 is smaller than the amount of projection of the convex portions 74 of the sensors 31 and 32 . Therefore, the convex portions 74 of the sensors 31 and 32 projecting to the other side in the opposing direction D1 interfere with the first portions 24A of the second wall portion 24 that face the base portions 73A of the sensors 31 and 32 . Similarly, the gap between the base portions 73A of the sensors 33 and 34 and the third portion 23C of the first wall portion 23 facing the base portions 73A of the sensors 33 and 34 on one side in the facing direction D1 is The distance is smaller than the protrusion amount of the protrusions 74 of the sensors 33 and 34 . Therefore, the convex portions 74 of the sensors 33 and 34 projecting to one side in the facing direction D1 interfere with the third portion 23C of the first wall portion 23 that faces the base portions 73A of the sensors 33 and 34 . This prevents the operator from fixing the sensors 31 to 34 erroneously in opposite directions in the facing direction D1. Therefore, the operator can easily fix the sensors 31 to 34 in the correct orientation.

As described above, the stove 1 is designed so that the direction of light emitted from the light emitting portion 47 of the sensor 30 is inclined forward. For this reason, for example, when the sensor 30 is fixed in the opposite direction in the facing direction D1, the emission direction of the light emitted from the light emitting portion 47 is the opposite direction. In this case, it is not possible to satisfy the foreign object detection area required by the sensor 30 in the stove 1, which is not preferable. On the other hand, in the stove 1, fixing the sensor 30 in the opposite direction as described above is suppressed. Therefore, the stove 1 can appropriately maintain the foreign matter detection area.

Moreover, in the sensor flow path 60C in the left case portion 291 of the stove 1, the widths between the base portions 73A of the sensors 31 to 34 and the first wall portion 23 and the second wall portion 24 are equal to each other. In comparison, the sensor channel 60C can be narrowed. In this case, the flow velocity of the cooling air flowing through the sensor flow path 60C can be increased, so the sensors 31 to 34 can be efficiently cooled by the cooling air.

Further, the fixed portion 81 (first fixed portions 81A, 81B, second fixed portions 81C, 81D) of the left case portion 291 arranges and fixes the sensors 31 to 34 in the direction along the sensor flow path 60C. In this case, a flow of cooling air is likely to flow through the sensor flow path 60C. On the other hand, for example, if the sensors 31 to 34 are arranged at positions shifted in the opposing direction D1 with respect to the direction along the sensor flow path 60C, it becomes difficult for the cooling air to flow. Therefore, the stove 1 can efficiently cool the sensors 31 to 34 by smoothly flowing the cooling air in the sensor flow path 60C.

The gap widths W11 and W22 are larger than the projection amount of the protrusion 74 of the sensor 30 , and the gap widths W12 and W21 are smaller than the protrusion amount of the protrusion 74 of the sensor 30 . In this case, if the sensors 31 to 34 were to be erroneously fixed in opposite directions in the facing direction D1, the projection 74 would certainly interfere with the first wall 23 and the second wall 24. . Therefore, the stove 1 can more appropriately prevent the sensors 31 to 34 from being fixed in opposite directions in the facing direction D1.

A plurality of fixed portions 81 are arranged in a direction along the sensor flow path 60C. The cooling air flowing through the sensor flow path 60</b>C flows smoothly without being obstructed by the plurality of fixing portions 81 . Therefore, the stove 1 can appropriately cool the sensors 31 to 34 by smoothly flowing the cooling air through the sensor flow path 60C.

In the sensor channel 60C, the widths W31 and W32 are the same and are larger than the width W33. In this case, the sensor flow path 60C can be made smaller in the portion between the sensors 32,33. Therefore, the flow velocity of the cooling air flowing through the sensor flow path 60C can be increased, so that the sensors 31 to 34 can be efficiently cooled by the cooling air.

<Modification>
The present invention is not limited to the above embodiments, and various modifications are possible. In the following description, the left case portion 291 of the sensor case 40 is exemplified to describe the modification, but the same modification can be applied to the right case portion 292 of the sensor case 40 as well.

The first wall portion 23 and the second wall portion 24, and the first wall portion 25 and the second wall portion of the sensor case 40 may each extend linearly in the left-right direction. The protrusion 74 of the sensor 30 is not limited to being formed by a connector, and may be formed by another component. The projecting directions of the projections 74 of the sensors 31 to 34 are not limited to the above embodiment. For example, the protrusions 74 of the sensors 31 and 33 may protrude to one side in the opposing direction D1, and the protrusions 74 of the sensors 32 and 34 may protrude to the other side in the opposing direction D1. The number of sensors 30 housed in the left case portion 291 is not limited to four, and may be any number of two or more.

The gap widths W12 and W21 may be the same as the protrusion amount of the protrusion 74 of the sensor 30 . The second portion 23B of the first wall portion 23 may be arranged on the right side of the center of the sensor flow channel 60C in the left-right direction. Also, the second portion 24B of the second wall portion 24 may be arranged on the left side of the center of the sensor flow path 60C in the left-right direction. In this case, the width W33 of the sensor flow path 60C in the portion sandwiched between the base 73A of the sensor 32 fixed to the first fixing portion 81B and the base 73A of the sensor 33 fixed to the second fixing portion 81C is , widths W31 and W32.

If the sensors 31 to 34 were to be erroneously fixed in opposite directions in the opposing direction D1, the protrusions 74 of the sensors 31 and 32 protruding to the other side in the opposing direction D1 would be removed from the second wall portion 24. instead of interfering with the first portion 24A of the sensor channel 60C, it may interfere with a first interfering portion (for example, a projecting portion projecting from the bottom portion 29A into the sensor channel 60C). Similarly, the protrusions 74 of the sensors 33 and 34 that protrude to one side in the opposing direction D1 do not interfere with the third portion 23C of the first wall portion 23, but instead are provided in the sensor flow path 60C. 2 interfering portion (for example, a protruding portion protruding from the bottom portion 29A into the sensor channel 60C).

The stove 1 of the above embodiment is a built-in stove, but it may be a table stove. Also, the number of stove burners is two in the above embodiment, but may be one or three or more.

<Others>
Sensors 32 and 36 are examples of the "first ranging sensor" of the present invention. Sensors 33 and 37 are an example of the "second ranging sensor" of the present invention. The sensor channels 60C and 60D are examples of the "channel" of the present invention. The sensor housing portion 45 of the sensor case 40 is an example of the "cooling portion" of the present invention. The base 73A of the sensors 32, 36 corresponds to the "first base" of the present invention. The base 73A of the sensors 33, 37 corresponds to the "second base" of the present invention. The convex portion 74 of the sensors 32, 36 corresponds to the "first convex portion" of the present invention. The convex portion 74 of the sensors 33, 37 corresponds to the "second convex portion" of the present invention. The first portion 24A of the second wall portion 24 corresponds to the "first interference portion" of the present invention. The third portion 23C of the first wall portion 23 corresponds to the "second interference portion" of the present invention.

1: stove 2: housing 3: top plate 23, 25: first walls 24, 26: second walls 30, 31, 32, 33, 34, 35, 36, 37, 38, 39: sensor 40: Sensor case 45 : Sensor housing portion 47 : Light emitting portion 48 : Light receiving portions 60C, 60D : Sensor flow path 73 : Base portion 73A : Base portion 74 : Convex portion 76 : Holding portion 81 : Fixing portions 81A, 81B : First fixing portion 81C, 81D: Second fixing parts D1, D2: Opposing direction

Claims (4)

a housing;
a top plate placed on the housing and closing an upper opening of the housing;
a first distance measuring sensor and a second distance measuring sensor arranged on the lower side of the top plate;
A heating cooker comprising a flow path containing the first range sensor and the second range sensor, and a cooling unit in which air flows in the flow path by a fan,
The first ranging sensor is
A first base portion including a light emitting portion and a light receiving portion, and a first convex portion protruding from the first base portion,
The second ranging sensor is
A second base portion including a light emitting portion and a light receiving portion, and a second convex portion protruding from the second base portion,
The cooling unit is
A pair of walls facing each other, comprising a first wall arranged on one side in the facing direction and a second wall arranged on the other side in the facing direction,
the flow path extending along the first wall and the second wall is formed between the first wall and the second wall;
a first fixing portion that fixes the first distance measuring sensor in the flow path in such a direction that the first convex portion protrudes toward one side of the facing direction with respect to the first base portion;
a second fixing portion that fixes the second distance measuring sensor in the flow path in a direction in which the second convex portion protrudes toward the other side of the facing direction with respect to the second base;
The gap width between the first base portion and the first wall portion in a state where the first distance measuring sensor is fixed to the first fixing portion is equal to the gap width between the first base portion and the second wall portion. is larger than the width, the first projection does not interfere with the first wall, and
The gap width between the second base portion and the second wall portion in a state where the second distance measuring sensor is fixed to the second fixing portion is equal to the gap width between the second base portion and the first wall portion. larger than the width, the second protrusion does not interfere with the second wall,
A first interfering portion that interferes with the first convex portion when it is assumed that the first distance measuring sensor is fixed to the first fixing portion in a direction in which the first convex portion protrudes in the other side of the facing direction. and,
A second interfering portion that interferes with the second convex portion when it is assumed that the second distance measuring sensor is fixed to the second fixing portion in a direction in which the second convex portion protrudes to one side of the facing direction. A heating cooker comprising: A gap width between the first base portion and the first wall portion in a state where the first distance measuring sensor is fixed to the first fixing portion is configured to be larger than a projection amount of the first convex portion. and
A gap width between the second base portion and the second wall portion in a state where the second distance measuring sensor is fixed to the second fixing portion is configured to be larger than a projection amount of the second convex portion. is,
between the first base portion and the second wall portion in a state in which the first distance measuring sensor is fixed to the first fixing portion in a direction in which the first convex portion protrudes toward the other side of the opposing direction; is configured to be smaller than the amount of protrusion of the first convex portion, and the portion of the second wall portion facing the first base portion is the first interference portion,
between the second base portion and the first wall portion in a state in which the second distance measuring sensor is fixed to the second fixing portion in a direction in which the second convex portion protrudes to one side in the facing direction; is configured to be smaller than the amount of protrusion of the second convex portion, and the portion of the first wall portion facing the second base portion is the second interference portion. Item 1. The heating cooker according to item 1. 3. The heating cooker according to claim 1, wherein said first fixing portion and said second fixing portion are arranged in a direction along said flow path. The width between the first wall portion and the second wall portion is larger at the portion between the first base portion and the second base portion than at the portion where the first base portion and the second base portion are arranged. The heating cooker according to any one of claims 1 to 3, characterized in that it is small.

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