JP6255276B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device with a cleaning function provided with a cleaning nozzle for cleaning a cooking chamber.

  Patent Document 1 discloses a cooking device having a cleaning function for cleaning a cooking chamber for cooking foods. The heating cooker of patent document 1 is provided with a detergent spray nozzle for spraying detergent into the cooking chamber, and a shower head for spraying washing water into the cooking chamber, and the detergent is put into the cooking chamber from the detergent spray nozzle. After spraying, steam is sent into the cooking chamber to float off dirt such as oil, and washing water is spouted from the shower head to wash off the dirt.

  Patent Document 2 also discloses a cooking device with a cleaning function for cleaning a cooking chamber for cooking food. The heating cooker of patent document 2 is made to inject washing water in a cooking chamber from the water pressure rotation nozzle which provided hot water in a steam generation tank in the spout of the ceiling wall of a cooking chamber.

JP-A-10-185197 JP 2010-038501 A

  In the heating cooker of patent document 1, the shower head which ejects washing water is provided in the upper part in a cooking chamber, and the shower head is attached so that washing water may be sprayed toward the downward or diagonally downward direction. Similarly, also in the heating cooker of Patent Document 2, a water pressure rotating nozzle that ejects cleaning water is provided in the upper part of the cooking chamber, and the water pressure rotating nozzle is attached so as to inject cleaning water downward or obliquely downward. ing. When the inside of the cooking cabinet was washed with these heating cookers, the washing water was hardly sprayed on the ceiling wall of the cooking cabinet, and the ceiling wall of the cooking cabinet often remained dirty. An object of this invention is to provide the heating cooker with a washing | cleaning function with which a stain | pollution | contamination is hard to remain in a cooking chamber.

In order to solve the above-mentioned problem, the present invention is a heating cooker with a cleaning function, which is attached to a ceiling wall of a cooking chamber for cooking foods and has a cleaning nozzle for injecting cleaning water into the cooking chamber, The cleaning nozzle is mounted so as to protrude downward on the ceiling wall of the cooking chamber, and has a mounting head having a cleaning water passage therethrough, a sleeve that is rotatably fitted to the mounting head, and a diameter from the sleeve. A plurality of spray pipes extending in the direction, and the mounting head is formed with an annular groove and a communication hole for communicating the annular groove and the water passage in the outer peripheral portion between the sleeve and the flushing water of the water passage. Is introduced into the annular groove from the communication hole, and the cleaning water in the annular groove is jetted from the injection pipe into the cooking chamber , and the cleaning water is placed between the upper end of the sleeve and the mounting head of the cooking chamber. Features a clearance that leads to the ceiling wall There is provided a heating cooker for.

  In the cooking device configured as described above, a clearance is provided between the upper end of the sleeve and the mounting head to guide the cleaning water to the ceiling wall of the cooking cabinet. In addition to being sprayed, the clearance between the upper end of the sleeve and the mounting head is guided to spray on the ceiling wall of the cooking cabinet, preventing dirt from remaining on the ceiling wall of the cooking cabinet. It was.

  In the cooking device configured as described above, a clearance for allowing the cleaning water to pass is provided between the lower end of the sleeve and the mounting head, and the lower end of the mounting head is larger than the diameter of the sleeve below the sleeve. It is preferable to provide a flange portion. In such a case, the cleaning water guided from the clearance between the lower end of the sleeve and the mounting head is guided sideways by the flange portion without dripping directly below, It can be discharged to the side of the water and the wash water can be used effectively.

  In the heating cooker configured as described above, it is preferable that the plurality of injection pipes are fixed to the sleeve with their heights being changed from each other up and down, and in this case, the plurality of injection pipes are vertically moved from the plurality of injection pipes to the side wall of the cooking chamber. Wash water is sprayed in a wide range in the direction. The cooking chamber is composed of a storage chamber to which a cleaning nozzle is attached and a food container, and a heating chamber that sends hot air to the storage chamber adjacent to the storage chamber. Hot air passes between the cooking chamber and the ceiling wall. A partition plate for partitioning the storage chamber and the heating chamber in a state where a ventilation interval is formed is provided, at least one of the plurality of injection tubes is provided at an upper position higher than the upper end of the partition plate, and at least one remaining of the plurality of injection tubes Is provided at the lower position lower than the upper end of the partition plate, the washing water injected from the injection pipe provided at the upper position can be injected into the heating chamber through the air gap, and injected from the injection pipe provided at the lower position. Can be sprayed on the partition plate. Furthermore, when the injection pipe provided at the upper position is linearly extended in the radial direction of the sleeve and the injection pipe provided at the lower position is curved in a direction intersecting the radial direction of the sleeve in the horizontal direction, The cleaning water can be ejected vigorously from the linearly extending injection pipe provided in the heating chamber to the heating chamber adjacent to the storage chamber, and the cleaning water ejected from the lower injection pipe is sprayed to the partition plate, and the sleeve It became possible to use as a driving force to rotate the.

  The mounting head has a large-diameter portion at a portion where the sleeve is loosely fitted and a small-diameter portion having a smaller diameter above the large-diameter portion, and the sleeve is loosely detachably fitted from above. When a step portion having an inner diameter smaller than the large diameter portion is formed at the upper end of the sleeve, the sleeve can be prevented from being attached upside down when the sleeve is attached to the attachment head. In addition, an inclined surface is formed on the inner peripheral surface of the step portion of the sleeve so as to incline toward the mounting head as it goes upward, and the large diameter portion of the mounting head is centered as it goes upward in a portion facing the inclined surface of the sleeve. When the inclined surface inclined to the side was formed, the washing water could be guided and sprayed to the ceiling wall of the cooking chamber without being obstructed by the stepped portion.

  In the heating cooker configured as described above, it is preferable to provide a constriction portion that narrows the diameter at the tip of the injection tube, and in this case, it is possible to increase the injection distance of the cleaning water to be injected from the injection tube. It became so.

It is the perspective view seen from diagonally downward in the state which opened the door of the cooking-by-heating machine of the present invention. It is a longitudinal cross-sectional view in the front part of FIG. It is the figure which looked at the partition plate from the storage chamber side. It is the (a) perspective view and (b) exploded view which show a washing nozzle. It is the partially expanded longitudinal cross-sectional view which expanded the center part of the washing nozzle. It is a partially expanded longitudinal cross-sectional view of the cooking chamber of FIG. 6 is a drawing corresponding to FIG. 5 when cleaning water is sprayed.

  Hereinafter, an embodiment of a heating cooker of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the cooking device 10 of the present embodiment includes a cooking chamber 20 in a portion excluding the left side in the housing 11 and a steam generator in the machine room 12 on the left side in the housing 11. 13 and a control device 14. A steam generator 13 provided in the machine room 12 supplies steam to the cooking chamber 20. A door 15 is attached to the front opening of the housing 11 so as to be openable and closable.

  As shown in FIG. 2, the cooking cabinet 20 is for storing food and cooking by heating, and the portion other than the left side of the cooking cabinet 20 is a storage chamber 21 for storing foodstuffs, and is adjacent to the storage chamber 21. A portion consisting of the left side portion of the cooking chamber 20 is a heating chamber 22 that sends hot air to the accommodation chamber 21. A partition plate 23 that partitions the storage chamber 21 and the heating chamber 22 is provided on the left side of the central portion of the cooking chamber 20 in the left-right direction. The partition plate 23 is attached to the cooking chamber 20 in a state in which a ventilation interval 23 a through which hot air passes is formed between the ceiling wall, bottom wall, front wall, and rear wall of the cooking chamber 20. As shown in FIG. 3, the partition plate 23 is formed with an air inlet 23 b composed of a large number of holes, and the air in the storage chamber 21 is sent to the heating chamber 22 through the air inlet 23 b.

  As shown in FIG. 2, a pair of left and right support frames 24 that support trays called hotel pans in a vertical direction are provided in the accommodation chamber 21. The support frame 24 is provided with support rails 24a for supporting the left and right edges of the tray in a multi-stage shape.

  The heating chamber 22 is for sending hot air to the storage chamber 21, and a heater 25 and a blower fan 26 including a centrifugal fan are provided on the left side wall of the cooking chamber 20 (heating chamber 22). The heater 25 heats the inside of the cooking cabinet 20, and the blower fan 26 circulates the air in the cooking cabinet 20. When the heater 25 and the blower fan 26 are operated, the air in the cooking chamber 20 is sucked into the heating chamber 22 from the storage chamber 21, and the air sucked into the heating chamber 22 is heated by the heater 25 and stored as hot air. It is delivered to the chamber 21. At this time, the air in the storage chamber 21 is introduced into the heating chamber 22 from the air inlet 23 b of the partition plate 23, and the air in the heating chamber 22 has a ventilation interval 23 a between the partition plate 23 and each wall of the cooking chamber 20. It is sent to the storage room 21 through.

  The cooking chamber 20 is provided with a cleaning water discharge port substantially at the center of the ceiling wall of the storage chamber 21, and a cleaning nozzle 30 is detachably attached to the discharge port. A cleaning water supply pipe (not shown) is provided in the housing 11, and the cleaning nozzle 30 is detachably connected to the supply pipe. The supply pipe is provided with an on-off valve (not shown) made of an electromagnetic valve, and the cleaning water is jetted from the cleaning nozzle 30 by opening the electromagnetic valve.

  As shown in FIG. 4, the cleaning nozzle 30 is loosely fitted to the mounting head 31 so as to protrude downward from the ceiling wall of the storage chamber 21 of the cooking chamber 20. A sleeve 34 and two injection pipes 35 and 36 extending in the radial direction from the sleeve 34 are provided. As shown in FIG. 5, the mounting head 31 has a substantially cylindrical tube body portion 32 having a water passage 31 a extending along the axial direction, and has a thickness that spreads outward on the lower side of the tube body portion 32. And a disc-shaped flange portion 33. The tube portion 32 includes a small diameter portion 32a in a substantially upper half portion and a large diameter portion 32b having a larger diameter below the small diameter portion 32a. A male screw is formed in a substantially upper half portion of the small diameter portion 32a, and the cleaning nozzle 30 is detachably attached by screwing the male screw into a female screw provided in a discharge port of the ceiling wall of the cooking cabinet 20. As shown in FIGS. 4B and 5, an annular groove 32 c is formed in the outer peripheral portion of the large diameter portion 32 b except for the upper end portion and the lower end portion. The large-diameter portion 32b is formed with a communication hole 32d that communicates the water passage 31a and the annular groove 32c in a direction orthogonal to the axial direction. An inclined surface 32e is formed at the upper end of the large-diameter portion 32b so as to incline toward the center as it goes upward.

  As shown in FIGS. 4 and 5, the sleeve 34 is loosely fitted rotatably at a position where the large-diameter portion 32 b of the mounting head 31 is formed. A clearance C <b> 1 is formed between the upper end of the sleeve 34 and the upper end portion of the large diameter portion 32 b of the mounting head 31 to guide the cleaning water to the ceiling wall of the cooking cabinet 20. As shown in FIG. 7, a clearance C <b> 2 is formed between the lower end of the sleeve 34 and the lower end portion of the large diameter portion 32 b of the mounting head 31 to guide the cleaning water to the upper surface of the flange portion 33. A step 34 a having an inner diameter smaller than the outer diameter of the large diameter portion 32 b is formed at the upper end of the sleeve 34, and the step 34 a functions to prevent the sleeve 34 from being attached to the mounting head 31 upside down. Have. An inclined surface 34b is formed on the inner peripheral surface of the step portion 34a. The inclined surface 34b is inclined toward the mounting head 31 as it moves upward. The inclined surface 34b of the step portion 34a of the sleeve 34 is cleaned together with the inclined surface 32e of the large diameter portion 32b. Water is easily guided to the ceiling wall of the cooking cabinet 20 without being blocked by the step 34a.

  Injection pipes (plurality of injection pipes) 35 and 36 are fixed to the circumferential portion of the sleeve 34 at positions opposite to each other in the circumferential direction. The injection pipes 35 and 36 are fixed to the sleeve 34 at positions where their heights are changed vertically. The injection pipe 35 provided at the upper position extends linearly in the radial direction of the sleeve 34 and is provided at a position higher than the upper end of the partition plate 23. The injection pipe 36 provided at the lower position extends linearly in the radial direction of the sleeve 34, and the tip portion is curved in a direction intersecting the radial direction of the sleeve 34 in the horizontal direction. The injection pipe 36 provided at the lower position is provided at a position lower than the upper end of the partition plate. Throttle tubes (throttle portions) 35a and 36a for narrowing the diameter are fitted and fixed to the tip portions of the injection tubes 35 and 36. The throttle tubes 35a and 36a are spray distances of cleaning water sprayed from the spray tube 36. It has a function to lengthen.

  The cleaning operation of the heating cooker 10 configured as described above will be described. When the cooking device 10 is washed, a detergent is sprayed into the cooking cabinet 20 to leave the detergent so that it becomes familiar with the dirt, and the steam generator 13 is operated to float dirt such as oil by the detergent and the steam. Thereafter, by opening an on-off valve (not shown) interposed in a cleaning water supply pipe (not shown), cleaning water for rinsing is jetted from the cleaning nozzle 30 into the cooking cabinet 20, and at the same time, the blower fan 26 The sprayed washing water is scattered to every corner in the cooking cabinet 20 by actuating.

  In the cleaning nozzle 30, the cleaning water sent from the cleaning water supply pipe into the water passage 31 a of the mounting head 31 is guided between the annular groove 32 c and the sleeve 34 through the communication hole 32 d. As shown in FIG. 6, most of the washing water between the annular groove 32c and the sleeve 34 is ejected from the ejection pipes 35 and 36 (shown as W1 and W2 in FIG. 6). The sleeve 34 rotates the mounting head 31 together with the injection pipes 35, 36 by the propulsive force of the cleaning water that is provided at the lower position and is injected by the injection pipe 36 whose tip is curved, and the jet 34 and the injection pipes 35, 36 The cleaning water is sprayed on the rear wall, the side wall and the upper part of the door 15 of the storage chamber 21 of the cooking cabinet 20, and the cleaning water is applied to the lower part of the rear wall, the side wall and the door 15 of the storage chamber 21 of the cooking cabinet 20. Flow down. Wash water (shown by W1 in FIG. 6) sprayed from the upper-side spray pipe 35 is also sent to the heating chamber 22 through the ventilation space 23a between the partition plate 23 and the ceiling wall of the cooking cabinet 20. The washing water is also sprayed on the heater 25 and the blower fan 26 and flows down from the upper part of the side wall of the heating chamber 22 to the lower part. Washing water (shown by W2 in FIG. 6) sprayed from the lower injection pipe 36 is also sprayed on the upper part of the partition plate 23, and the cleaning water flows down from the upper part of the partition plate 23 to the lower part.

  A part of the cleaning water between the annular groove 32c of the mounting head 31 and the sleeve 34 is ejected upward from the clearance C1 between the upper end of the sleeve 34 and the upper end of the large diameter portion 32b of the mounting head 31. And sprayed on the ceiling wall of the cooking cabinet 20 (shown as W3 in FIG. 6). Further, a part of the washing water between the annular groove 32c of the mounting head 31 and the sleeve 34 is from the clearance C2 between the lower end of the sleeve 34 and the lower end of the large diameter portion 32b of the mounting head 31 to the upper surface of the flange 33. And is discharged laterally from the upper surface of the flange portion 33 (shown as W4 in FIG. 6). The washing water discharged to the side from the upper surface of the flange portion 33 is sprayed onto the uppermost support rail 24a of the support frame 24 that supports the tray, and flows down from the uppermost support rail 24a to the lower support rails 24a. . The washing water jetted to each part from the washing nozzle 30 is further sent to every corner in the cooking cabinet 20 by the air in the cooking cabinet 20 convected by the blower fan 26, and the dirt in the cooking cabinet 20 is washed away. .

  In the cleaning nozzle 30 of the heating cooker 10 configured as described above, cleaning water is placed on the ceiling wall of the cooking chamber 20 between the upper end of the sleeve 34 and the large-diameter portion 32b of the tube portion 32 of the mounting head 31. Since the clearance C1 for guiding is provided, the cleaning water is not only jetted in the radial direction of the sleeve 34 from the jet pipes 35 and 36 (shown by W1 and W2 in FIG. 6), but also the upper end of the sleeve 34 and the mounting head 31. From the clearance C1 between the large-diameter portion 32b of the tubular body portion 32 and guided to spray onto the ceiling wall of the cooking cabinet 20 (shown as W3 in FIG. 6), the ceiling wall of the cooking cabinet 20 becomes dirty. It was possible to prevent the remaining.

  Further, a clearance C2 is provided between the lower end of the sleeve 34 and the large-diameter portion 32b of the tube portion 32 of the mounting head 31, and the lower end of the mounting head 31 is below the sleeve 34. A flange portion 33 larger than the diameter of the sleeve 34 was provided. The washing water leaked from the clearance C2 between the lower end of the sleeve 34 and the mounting head 31 is guided to the side by the flange portion 33 without dripping directly below, and supports the tray installed on the side portion in the cooking chamber 20. It was sprayed on the uppermost support rail 24a of the support frame 24 (shown as W4 in FIG. 6). As described above, the sleeve 34 is loosely fitted to the mounting head 31 so that the clearances C1 and C2 are formed vertically, so that the support rail 24a of the support frame 24 that supports the ceiling wall and tray of the cooking cabinet 20 is provided. As described above, the cleaning water can be sprayed to each part that is not directly injected from the outlet of the injection pipes 35 and 36. In addition, since the cleaning water is always interposed between the sleeve 34 and the mounting head 31, the sleeve 34 and the mounting head 31 can be prevented from being worn away from each other. In particular, as shown in FIG. 7, the sleeve 34 slightly floats from the upper surface of the flange portion 33 of the mounting head 31 due to the cleaning water leaking from the lower end of the sleeve 34, and the lower end of the sleeve 34 and the flange portion 33 of the mounting head 31. It was possible to prevent the upper surface of each other from being worn away.

  Further, since the injection pipes 35 and 36 are fixed to the sleeve 34 with their heights being changed from each other up and down, washing water is widely spread in the vertical direction from the injection pipes 35 and 36 to the side wall, rear wall and door 15 of the cooking cabinet 20. Began to be injected. The upper injection pipe 35 is provided at an upper position higher than the upper end of the partition plate 23 that partitions the storage chamber 21 and the heating chamber 22, and the lower injection pipe 36 is provided at a lower position lower than the upper end of the partition plate 23. Accordingly, the cleaning water sprayed from the spray pipe 35 provided at the upper position can be sprayed into the heating chamber 22 through the ventilation space 23a between the partition plate 23 and the upper wall of the cooking cabinet 20, and at the lower position. The cleaning water sprayed from the provided spray pipe 36 can be sprayed on the upper part of the partition plate 23 (in order to clearly indicate the height position with the partition plate 23, the spray pipe 36 is shown by a two-dot chain line in FIG. The cleaning water can be sprayed onto both the heating chamber 22 where the cleaning water is difficult to reach and the partition plate 23 that partitions the heating chamber 22.

  Further, since the injection pipe 35 provided in the upper position is linearly extended in the radial direction of the sleeve 34, the cleaning water can be jetted vigorously to the heating chamber 22 adjacent to the storage chamber 21. Further, since the tip end portion of the injection pipe 36 provided at the lower position is curved in a direction intersecting with the radial direction of the sleeve 34 in the horizontal direction, not only the cleaning water is injected onto the upper portion of the partition plate 23 but also the sleeve 34. It became possible to use as a driving force to rotate the. Furthermore, by providing the throttle pipes 35a and 36a at the tip ends of the injection pipes 35 and 36, the injection distance of the cleaning water injected from the injection pipes 35 and 36 can be increased. The washing water can be reliably sent to the heating chamber 22.

  Further, the tube portion 32 of the mounting head 31 has a large diameter portion 32b at a portion where the sleeve 34 is loosely fitted, and a small diameter portion 32a having a smaller diameter above the large diameter portion 32b. Is freely detachably fitted to the large diameter portion 32b from above. A step portion 34a having an inner diameter smaller than that of the large diameter portion 32b is formed at the upper end of the sleeve 34, and the step portion 34a has a function of preventing the sleeve 34 from being attached upside down. Accordingly, the sleeve 34 can be prevented from being attached to the mounting head 31 upside down by the step portion 34a, and each function of each of the injection pipes 35, 36 having different functions in the vertical direction can be appropriately exhibited. it can. Further, an inclined surface 34b is formed on the inner peripheral surface of the step 34a of the sleeve 34 so as to incline toward the mounting head 31 as it goes upward, and the large diameter portion 32b of the mounting head 31 is a portion facing the inclined surface of the sleeve. The inclined surface 32e which inclines toward the center side as it goes upward is formed. As a result, the washing water derived from the clearance C1 between the mounting head 31 and the sleeve 34 can be guided and injected to the ceiling wall of the cooking cabinet 20 without being obstructed by the step 34a of the sleeve 34.

  In the heating cooker 10 configured as described above, the two injection pipes 35 and 36 are attached to the sleeve 34 while changing the height in the vertical direction, but the present invention is not limited to this, and the three The above injection pipe may be fixed to the sleeve 34 by changing the height in the vertical direction. When three or more injection pipes are fixed to the sleeve 34 by changing the height in the vertical direction, at least one is positioned higher than the upper end of the partition plate 23 and at least one remaining is positioned lower than the upper end of the partition plate 23. If it does so, washing water can be sprayed to both the inside of the heating chamber 22 and the partition plate 23.

  In the heating cooker 10 configured as described above, the tip of the injection pipe 36 at the lower position is curved in a direction that intersects the radial direction of the sleeve 34 in the horizontal direction, but the present invention is limited to this. In addition, the lower injection tube 36 is also linearly extended in the radial direction of the sleeve 34 in the same manner as the upper injection tube 35, and the periphery of the tip of at least one of the upper and lower injection tubes 35, 36. You may make it form the hole part which ejects the washing water for providing the driving force which rotates the sleeve 34 to a part.

  DESCRIPTION OF SYMBOLS 10 ... Heating cooker, 20 ... Cooking chamber, 21 ... Storage chamber, 22 ... Heating chamber, 23 ... Partition plate, 23a ... Ventilation space, 30 ... Cleaning nozzle, 31 ... Mounting head, 31a ... Water passage, 32a ... Small diameter part 32b ... large diameter part, 32c ... annular groove, 33 ... flange part, 34 ... sleeve, 35,36 ... injection pipe, 35a, 36a ... throttle part (throttle pipe).

Claims (8)

A cooking device with a cleaning function, which is attached to a ceiling wall of a cooking chamber for cooking foods and has a cleaning nozzle for injecting cleaning water into the cooking chamber,
The cleaning nozzle is attached so as to protrude downward on the ceiling wall of the cooking cabinet, an attachment head having a washing water passage inside, a sleeve rotatably fitted to the attachment head, A plurality of injection pipes extending in the radial direction from the sleeve,
An annular groove and a communication hole for communicating the annular groove and the water passage are formed in an outer peripheral portion between the mounting head and the sleeve, and cleaning water in the water passage is passed from the communication hole to the annular groove. The washing water in the annular groove is injected into the cooking chamber from the injection pipe,
A heating cooker characterized in that a clearance is provided between the upper end of the sleeve and the mounting head to guide the cleaning water to the ceiling wall of the cooking cabinet. The heating cooker according to claim 1, wherein
A clearance for allowing cleaning water to pass is provided between the lower end of the sleeve and the mounting head, and a flange portion larger than the diameter of the sleeve is provided below the sleeve at the lower end portion of the mounting head. A heating cooker featuring. The heating cooker according to claim 1 or 2,
The cooking device according to claim 1, wherein the plurality of spray pipes are fixed to the sleeve at positions where their heights are changed vertically. The cooking device according to claim 3,
The cooking chamber includes a storage chamber to which the cleaning nozzle is attached and which stores foodstuffs, and a heating chamber that sends hot air to the storage chamber adjacent to the storage chamber,
In the cooking chamber, a partition plate is provided that partitions the storage chamber and the heating chamber in a state where a ventilation interval is formed between the ceiling wall and hot air to pass through.
At least one of the plurality of injection pipes is provided at an upper position higher than the upper end of the partition plate, and at least one remaining of the plurality of injection pipes is provided at a lower position lower than the upper end of the partition plate. Cooking cooker. The cooking device according to claim 4, wherein
The injection pipe provided at the upper position is linearly extended in the radial direction of the sleeve, and the injection pipe provided at the lower position is curved in a direction intersecting the radial direction of the sleeve in the horizontal direction. A heating cooker featuring. In the heating cooker according to any one of claims 3 to 5,
The mounting head has a large-diameter portion at a portion where the sleeve is loosely fitted, and a small-diameter portion having a smaller diameter above the large-diameter portion, and allows the sleeve to be freely detachably fitted from above. And a step having a smaller inner diameter than the large diameter portion is formed at the upper end of the sleeve. The heating cooker according to claim 6, wherein
An inclined surface is formed on the inner peripheral surface of the step portion of the sleeve so as to incline toward the mounting head as it proceeds upward, and the large diameter portion of the mounting head proceeds upward to a portion facing the inclined surface of the sleeve. A heating cooker characterized in that an inclined surface inclined toward the center side is formed. In the heating cooker according to any one of claims 1 to 7,
A heating cooker, characterized in that a throttle part for narrowing the diameter is provided at the tip of the spray pipe.

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