JP2023033818A - heating cooker - Google Patents

Abstract

To cover an exhaust port so that small pieces or the like of food materials do not enter the exhaust port even if a perforated plate for blocking the exhaust port of a cooking storage chamber is reversely attached in a vertical direction so as to be water-conductive, in a heating cooker.SOLUTION: A heating cooker 10 comprises a cooking storage chamber 20, a heater 25 for heating the inside of the cooking storage chamber, a convection fan 26 for moving air in the cooking storage chamber 20 by convection, an exhaust port 20c arranged at a bottom part of the cooking storage chamber 20, and a perforated plate 50 for covering the exhaust port 20c so as to be water/air-conductive. The perforated plate 50 comprises an annular frame part 51 larger than the exhaust port 20c of the cooking storage chamber 20 in a diameter, and a filter part 52 using a mesh member arranged inside the annular frame part 51. The filter part 52 comprises an annular erecting part 53 erecting upward at the outside of the exhaust port 20c, and a fitment/insertion recess 54 which is recessed so as to be fittingly inserted into the exhaust port 20c at the inside of the erecting part 53.SELECTED DRAWING: Figure 10

Description

TECHNICAL FIELD The present invention relates to a heating cooker such as a steam convection oven that heats and cooks foodstuffs with hot air.

Patent Literature 1 below discloses a heating cooker that heats and cooks foodstuffs with hot air. This heating cooker includes a cooking chamber for cooking ingredients, a heater for heating the interior of the cooking chamber, a convection fan for convecting air in the cooking chamber, a steam generator for supplying steam to the interior of the cooking chamber, and a heater. and a convection fan and a controller for controlling the operation of the steam generator. The control device of this heating cooker has a cooking program for heating and cooking ingredients, and when the cooking program is executed by the control device, the air in the cooking chamber becomes hot air due to the operation of the heater and the convection fan. At the same time, steam is supplied to the convection hot air by the operation of the steam generator, and the foodstuffs accommodated in the cooking chamber are cooked by the hot air containing the steam.

This heating cooker has a washing function that automatically cleans the inside of the cooking chamber with washing water. It comprises a washing water passage connecting the washing nozzle, a tank interposed in the washing water passage to temporarily store the washing water, and a pump for sending the washing water in the tank to the washing nozzle. When the pump is operated to wash the inside of the cooking chamber, the washing water in the tank is sent to the washing nozzle through the washing water passage, and the washing water sprayed into the cooking chamber from the washing nozzle is discharged into the tank from the drain port. and the inside of the cooking chamber is washed by washing water circulating between it and the tank.

The drain port of the cooking chamber is equipped with a drain perforated plate (perforated plate) to prevent solids (foreign matter) such as small pieces of ingredients from entering the washing water passage, and the drain perforated plate is larger than the drain port. An annular frame portion having a diameter, a net-like filter portion provided inside the frame portion and formed so as to be recessed downward so as to be inserted into the drain port, and a low columnar filter portion on the upper side of the frame portion. and a stand for standing up a tablet-shaped solid detergent. By erecting the tablet-shaped solid detergent on the stand part of the drain perforated plate, the drainage port is prevented from being clogged with the tablet-shaped solid detergent.

JP 2019-138618 A

The heating cooker of Patent Document 1 is detachably provided with a drain perforated plate at the drain port, and can prevent solids such as small pieces of food from entering the washing water passage from the drain port. In this heating cooker, an upside-down drain perforated plate may be mistakenly attached to the drain port. In this case, the stand part set up on the upper side of the drainage plate is caught on the periphery of the drainage port, and the upside-down drainage plate is installed so that it is tilted diagonally above the drainage port, and the drainage port is attached to the drainage port. There is a risk that it will not be possible to block solids from entering. Also, in the process of loading and unloading the tray from the cooking chamber, the tray and the user's hand are caught in the stand part of the drainage plate, causing the drainage plate to turn upside down and the drainage plate to be placed above the drain port. There is a risk that the drain port will not be blocked by the drain plate. In a heating cooker, the present invention prevents solid matter (foreign matter) such as small pieces of food from entering the drainage port even when the perforated plate that blocks the drainage port of the cooking chamber is installed upside down so that water can flow and air can flow. The purpose is to be able to cover the drain to prevent

In order to solve the above problems, the present invention provides a cooking chamber for cooking ingredients, a heater for heating the interior of the cooking chamber, a convection fan for convecting the air in the cooking chamber, and a drain port provided at the bottom of the cooking chamber. and a perforated plate that covers the drain port so that water can flow through and through the perforated plate, wherein the perforated plate comprises an annular frame portion having a diameter larger than the drain port and a net member provided inside the annular frame portion. The filter part has an annular rising portion that rises upward outside the drain port, and a fitting recess that is recessed so as to be inserted into the drain port inside the rising portion. To provide a heating cooker characterized by

In the heating cooker configured as described above, the filter portion of the perforated plate includes an annular raised portion that rises upward outside the drain port and a recess that is recessed so as to be inserted into the drain port inside the raised portion. and a recess. Even if solids such as small pieces of ingredients that have fallen to the bottom of the cooking chamber roll toward the drain, the rising part of the perforated plate is arranged outside the drain, so the small pieces of food will not fall into the drain. It becomes difficult to enter the insertion recess. As a result, the drain is less likely to be clogged with solids such as small pieces of food. When the upside-down perforated plate is attached to the drain port, there is no protrusion such as a stand on the upper side of the perforated plate for standing up the tablet-shaped solid detergent, so the perforated plate is attached to the periphery of the drain port. tilted to make it difficult to install. Even if the upside-down perforated plate is attached to the drain port, the upper side of the drain port is covered by the fitting recess so as to allow water flow and ventilation while the rising portion is in contact with the outside of the drain port. Even if the perforated plate is turned upside down, the drain port can be covered so as to allow water to flow and air to pass through, making it difficult for solids such as small pieces of food to enter the drain port.

It is a front view of one embodiment of the heating cooker of the present invention. FIG. 2 is a perspective view of the door of FIG. 1 in an opened state; It is a perspective view of the back side of a door. FIG. 4 is a schematic diagram of a holding mechanism that holds the door in the narrow open position and the wide open position, including a plan view of the hinge shaft (a), a plan view of the hinge bearing (b), and the hinge when the door is closed. Perspective view and plan view (c) when the shaft is engaged with the hinge bearing, and perspective view when the hinge shaft is engaged with the hinge bearing when the door is opened in a narrowly open state. FIG. 10D is a plan view (d), and a perspective view and a plan view (e) show that the hinge shaft portion is engaged with the hinge bearing portion when the door is opened in a wide open state. They are a perspective view (a) of the front side of the inner glass, a perspective view (b) of the back side of the inner glass, and an enlarged cross-sectional view (c) taken along line AA. It is a BB sectional view. It is a vertical cross-sectional view at the central portion in the front-rear direction. It is a CC cross-sectional perspective view seen from the oblique rear. FIG. 4 is a vertical cross-sectional view at a position where the steam generator is arranged; It is a vertical cross-sectional view (a) when the perforated plate is attached to the drain port, and a vertical cross-sectional view (b) when the perforated plate is attached to the drain port upside down. It is a block diagram of a control device. FIG. 4 is a perspective view of the embodiment in which the rail of the support frame is formed with hot air passage openings, with the door opened. It is the perspective view (a) which shows the partition plate of other Example, and the partial expansion perspective view (b) of the partition plate of the state which attached the partition plate to the cooking chamber, and the bottom part of the cooking chamber.

An embodiment of the heating cooker of the present invention will be described below with reference to the accompanying drawings. The heating cooker of the present invention is called a steam convection oven, and heats and cooks foodstuffs by convection of hot air containing steam. As shown in FIG. 1, the heating cooker 10 has a machine room 12 on the left side of the housing 11 and a cooking chamber 20 for cooking foodstuffs in a portion of the housing 11 excluding the machine room 12. I have. As shown in FIG. 2, the front portion of the cooking chamber 20 is provided with an opening 20a through which food is taken in and out, and a door 30 for opening and closing the opening 20a of the cooking chamber 20 is provided on the right side of the front surface of the housing 11. It is pivotally supported so as to be rotatable about a vertical axis.

As shown in FIGS. 1 to 3, the door 30 includes an outer glass 31 arranged on the front side (outside) and an inner glass 32 arranged on the rear side (inside) of the outer glass 31. . A metal front frame 31a is provided on the front peripheral edge portion of the outer glass 31 except for the left side, and a metal rear frame 31b is provided on the rear left side of the outer glass 31. It is sandwiched and fixed between the front frame 31a and the rear frame 31b. Since a metal frame is not arranged on the front left side of the outer glass 31, the vicinity of the handle 33 of the outer glass 31 is less likely to become hot.

As shown in FIGS. 2 and 3, a mounting portion 34 is provided on the rear surface of the right side portion of the outer glass 31 for axially supporting the outer glass 31 to the right front portion of the housing 11 and for axially supporting the inner glass 32 . there is Hinge bearings 35 and 36 are provided on the upper and lower portions of the mounting portion 34 , and the hinge bearings 35 and 36 are pivoted by the hinge shafts 13 and 14 provided on the upper and lower portions of the front right side of the housing 11 . engaged as possible. The door 30 opens the opening 20a of the cooking chamber 20 with a narrow opening (5° in this embodiment, but it may be in the range of 1° to 5°), and the cooking chamber 20 The wide opening position (110° in this embodiment, but 90° to 120° It is possible to maintain the open state with the above.

A holding mechanism for holding the door 30 in the narrow open position and the wide open position will be described with reference to FIG. A hinge shaft portion 14 provided in the lower portion of the housing 11 is fixed to the lower right portion of the front surface of the housing 11 by a hinge bracket 14a. As shown in FIG. 4A, the base end portion of the hinge shaft portion 14 is provided with holding protrusions 14b on both left and right sides. These holding projections 14b are arranged at positions inclined counterclockwise by 5° from both left and right sides of the hinge shaft portion 14. As shown in FIG. As shown in FIG. 4B, a thick plate member is used for the hinge bearing portion 36 provided at the lower portion of the mounting portion 34 of the outer glass 31, and a hinge hole portion 36a through which the hinge bearing portion 36 is inserted is formed. formed. When the door 30 closes the opening 20a of the cooking chamber 20, the lower surface of the hinge bearing portion 36 is formed with first holding recesses 36b recessed upward on both left and right sides of the hinge hole portion 36a. A second holding recess 36c recessed upward is formed at a position inclined 15° clockwise from both upper and lower sides of the hinge hole 36a.

The first holding recess 36b has a function of holding the door 30 in the narrow open position by engaging with the holding projections 14b on both the left and right sides of the hinge shaft 14. As shown in FIG. Further, the second holding recess 36c has a function of holding the door 30 in the wide open position by engaging with the holding projections 14b on both the left and right sides of the hinge shaft 14. As shown in FIG. As shown in FIG. 4(c), when the door 30 closes the opening 20a of the cooking chamber 20, the holding protrusions 14b on both sides of the hinge shaft 14 are aligned with the first holding recesses 36b of the hinge bearing 36. As shown in FIG. not fully engaged. As shown in FIG. 4D, when the handle 33 is operated to open the door 30, the first holding recesses 36b of the hinge bearing portion 36 are engaged with the holding protrusions 14b on both sides of the hinge shaft portion 14. Then, the door 30 is held in a narrowly open state with its rotation stopped. When the door 30 is opened from the closed state of the opening 20a of the cooking chamber 20, the rotation of the door 30 is stopped in the narrowly open state and held in this state. The high-temperature steam is not blown out vigorously from the steering wheel toward the user who is operating the steering wheel.

As shown in FIG. 4( e ), when the door 30 is further opened while the door 30 is stopped in the narrowly open state, the door 30 is slightly lifted upward, and the first holding recess of the hinge bearing 36 is opened. 36b climbs over the holding projection 14b of the hinge shaft 14 and leaves. When the second holding concave portion 36c of the hinge bearing portion 36 engages with the holding projection portion 14b of the hinge shaft portion 14, the door 30 is stopped and held in the wide open state. When the door 30 is further opened from the narrowly open state, the door 30 stops rotating in the wide open state and is held in this state. The hot door 30 can be prevented from hitting the user when exiting.

As shown in FIG. 5, a metal frame 32a is provided on the front surface of the inner glass 32, and the inner glass 32 can rotate about a vertical axis to the rear surface of the right side of the outer glass 31 by means of the frame 32a. pivoted on. The frame 32a has a rectangular frame shape with an open inside, and is fixed to the front peripheral portion of the inner glass 32 with a silicon caulking agent I. As shown in FIG. An upper claw portion 32b is provided on the upper end portion of the frame 32a. The right end of the frame 32a is provided with a right claw portion 32c whose horizontal cross section in the left-right direction is bent into a substantially U-shape so as to sandwich the right end of the inner glass 32 in the front and rear. Lower claw portions 32d extending rearward are provided on the lower end portion of the frame 32a on both left and right sides. there is A holder 32f for fixing the left end of the inner glass 32 to the frame 32a is provided at the left end of the frame 32a. A hinge bearing portion 32g is provided on the right side of the frame 32a, and the hinge bearing portion 32g is rotatably engaged with the hinge shaft portion 34a of the mounting portion 34 on the right side of the outer glass 31. As shown in FIG.

Since the inner glass 32 is adhered to a single frame 32a that is not vertically separated, the ends of the inner glass 32 and the upper claw portion 32b, the right claw portion 32c, and the lower claw portion 32d of the frame 32a are connected to each other. contact can be reduced, and the risk of breakage of the inner glass 32 due to contact with the claws 32b to 32d of the metal frame 32a can be reduced. An upper claw portion 32b is arranged on the upper portion of the frame 32a, a right claw portion 32c is arranged on the right side of the frame 32a, and a lower claw portion 32d is arranged on the lower portion of the frame 32a. Since the holder 32f is disposed on the left side of the frame 32a, the inner glass 32 remains attached to the frame even if the adhesive strength of the silicone caulking agent I that bonds the inner glass 32 to the frame 32a is reduced. It is possible to prevent falling off from the body 32a. A notch portion 32h is formed on the left side of the holder 32f, so that the inner glass 32 can be rotated about the vertical axis with respect to the mounting portion 34 by inserting a finger through the notch portion 32h.

As shown in FIGS. 2 and 3, a door-side drain gutter 37 is provided below the inner glass 32 on the back surface of the outer glass 31, and water droplets condensed on the inner glass 32 are received by the door-side drain gutter 37. be done. A drain port 37a is provided at the right end of the door-side drain gutter 37, and water droplets received by the door-side drain gutter 37 are discharged from the drain port 37a. A storage-side drain gutter 15 is provided in the lower front portion of the housing 11 , and water discharged from the drain port 37 a of the door-side drain gutter 37 is received by the storage-side drain gutter 15 . A drain gutter drainage pipe (not shown) is connected to the storage side drain gutter 15, and the water received by the storage side drain gutter 15 is discharged to the outside of the housing 11 through the drain gutter drainage pipe (not shown). be.

As shown in FIGS. 2 and 6, a rectangular ring-shaped mounting groove 11a is formed in the front surface of the housing 11 so as to surround the rectangular opening 20a of the cooking chamber 20. has a packing 40 attached. The packing 40 seals between the front surface of the housing 11 and the inner glass 32 of the door 30 to close the opening 20a of the cooking chamber 20 airtightly. The packing 40 includes a base portion 41 fitted into the mounting groove 11a, and a buffer portion 42 that airtightly closes the space between the front surface of the housing 11 and the inner glass 32 of the door 30. As shown in FIG. The base portion 41 has a substantially rectangular cross-sectional shape in a direction orthogonal to the longitudinal direction, and has a hollow portion 41a having a circular cross-sectional shape inside. The base portion 41 is fitted into the mounting groove 11a by crushing the hollow portion 41a.

The cushioning portion 42 has a substantially triangular cross-sectional shape in a direction orthogonal to the longitudinal direction, and has a hollow portion 42a having a substantially triangular cross-sectional shape therein. A projection 42b extending in the longitudinal direction is formed on the slope of the cushioning portion 42 opposite to the opening 20a. The inside of the projecting portion 42b also has a hollow shape so as to be continuous with the hollow portion 42a. Since the cushioning portion 42 is formed with a hollow protrusion 42b, when the door 30 is closed and the inner glass 32 is pressed against the cushioning portion 42, the slope of the cushioning portion 42 on the side of the opening 20a faces the hollow portion 42a. The inclined surface of the cushioning portion 42 on the side opposite to the opening portion 20a comes into close contact with the inner glass 32 while being elastically deformed. At this time, the protrusion 42b formed on the slope on the side opposite to the opening 20a of the cushioning portion 42 is brought into close contact with the inner glass 32 so that the internal hollow portion is crushed. By forming the protrusion 42b on the buffer portion 42 in this manner, the cushioning function when the inner glass 32 is pressed against the packing 40 is improved, and the durability of the packing 40 can be increased.

In addition, as described above, the projection 42b is formed on the slope opposite to the opening of the buffering portion 42, and directly below the projection 42b of the buffering portion 42 of the packing 40 arranged below the opening 20a. A door-side drain gutter 37 or a storage-side drain gutter 15 is arranged in the . Condensation generated in the cooking chamber 20 may adhere to the buffer portion 42 of the packing 40 directly or via the inner glass 32 . Water droplets due to dew condensation adhering to the buffer portion 42 of the packing 40 arranged below the opening 20a flow along the slope on the opposite side (lower side) of the opening 20a. It flows down to the side drain gutter 37 or the storage side drain gutter 15. In this way, water droplets adhering to the buffering portion 42 of the packing 40 flow down from the projection 42b to the door-side drain gutter 37 or the storage-side drain gutter 15, so that the buffering portion 42 runs down the slope of the buffering portion 42 on the side opposite to the opening 20a of the housing 11. Do not run down along the front surface.

As shown in FIG. 7, the cooking chamber 20 is for storing and cooking foodstuffs. A hot air generating chamber 22 for generating hot air to be sent to the food storage chamber 21 is formed on the left side of the food storage chamber 21 . As shown in FIG. 8, the left side wall of cooking chamber 20 is formed with a steam inlet 20b, and as shown in FIG. 9, the bottom wall of cooking chamber 20 is formed with a drain port 20c. A steam generator 60, which will be described later, is connected to the steam inlet 20b. Further, the drain port 20c is provided with a perforated plate 50, which will be described later, and the drain port 20c is covered with the perforated plate 50 so as to allow water and air to pass through. The drain port 20 c is connected to the drain tank 17 by the first drain pipe 16 , and the water in the cooking chamber 20 is drained to the drain tank 17 through the first drain pipe 16 . A second drain pipe (not shown) is connected to the drain tank 17, and the water in the cooking chamber 20 is discharged into the drain tank 17 through the first drain pipe 16 and then flows through the second drain pipe. is discharged to the outside of the housing 11.

As shown in FIGS. 6 and 7, a partition plate 23 is provided on the left side of the central portion in the left-right direction of the cooking chamber 20, and the partition plate 23 allows ventilation between the food storage chamber 21 and the hot air generation chamber 22. divided into The partition plate 23 has the function of a fan cover that covers the suction port side of the convection fan 26 arranged in the hot air generation chamber 22 . As shown in FIG. 6, the partition plate 23 is formed with a large number of suction ports 23a. The partition plate 23 is attached to the ceiling wall, bottom wall, front wall, and rear wall of the cooking chamber 20 so as to form a space through which air can pass. Between the partition plate 23 and the ceiling wall, the bottom wall, the front wall and the rear wall of the cooking chamber 20, a ventilation passage 23b through which air passes is formed. It is sent to the food storage room 21 .

As shown in FIG. 7, a pair of left and right support frames 24 are provided in the food storage chamber 21 of the cooking chamber 20 to support trays called hotel pans in a multi-tiered manner. The support frame 24 of this embodiment can support three vertically shallow trays and two vertically deep trays shown in FIG. A support frame 24 is fixed to the right side wall of the cooking chamber 20 . A pair of left and right support frames 24 are provided with rails 24a extending in the front-rear direction in three tiers.

As shown in FIGS. 7 and 8, the hot air generating chamber 22 of the cooking chamber 20 is provided with a heater 25 and a convection fan 26. As shown in FIGS. The heater 25 heats the interior of the cooking chamber 20 and is wound around the left side wall of the cooking chamber 20 in a substantially annular shape. The convection fan 26 convects the air in the cooking chamber 20 and is attached to the inside of the heater 25 that is wound around the left side wall of the cooking chamber 20 in a substantially annular shape. A centrifugal fan made of a sirocco fan is employed as the convection fan 26 of this embodiment. A temperature sensor 27 is provided on the left wall of the cooking chamber 20 and detects the temperature inside the cooking chamber 20 .

When the convection fan 26 is operated, the air in the food storage chamber 21 is sucked into the hot air generating chamber 22 through the suction port 23a of the partition plate 23, and the sucked air is blown outward in the centrifugal direction from the hot air generating chamber 22. The blown air is returned to the food storage chamber 21 through the upper and lower and front and rear air passages 23b. Further, when the convection fan 26 is operated together with the heater 25, the air sucked into the hot air generating chamber 22 from the food storage chamber 21 is blown against the heater 25 arranged outside the convection fan 26 and becomes high temperature hot air. The hot air is returned to the food storage chamber 21 through the upper and lower and front and rear air passages 23b.

As shown in FIG. 8, a temperature sensing tube 28 is provided on the left side of the front wall of the cooking chamber 20 as a temperature protector for the interior of the cooking chamber. Installed on the left side. The holder 29 includes a pillar portion 29a fixed to the left side of the front wall of the cooking chamber 20, and an arm portion 29b using a leaf spring member extending left and right at upper and lower portions of the pillar portion 29a. is urged against the front wall side of the cooking chamber 20 by the upper and lower arms 29b on the right side and held. Since the leaf spring member is used for the arm portion 29b, the temperature sensing cylinder 28 can be attached to and detached from the arm portion 29b from the outside. Electric wiring (not shown) of a core temperature sensor for detecting the core temperature of food carried into the cooking chamber 20 can be held in the upper and lower arm portions 29b on the left side. The electrical wiring of this core temperature sensor can also be attached to and detached from the arm portion 29b from the outside.

As shown in FIGS. 9 and 10(a), a perforated plate 50 is provided in a circular drain port 20c formed in the rear portion of the bottom wall of the cooking chamber 20, and the perforated plate 50 is provided at the drain port 20c. It is covered with water and ventilation so that solids (foreign matter) such as small pieces of The perforated plate 50 includes a circular annular frame portion 51 having a diameter larger than that of the drain port 20c, and a filter portion 52 provided inside the annular frame portion 51 and using a metal mesh member. The filter part 52 covers the drain port 20c so as to allow water to pass through and to ventilate. It is provided with a fitting recess 54 that is recessed so as to be inserted.

When food is cooked in the cooking chamber 20, small pieces (solid matter) of the food may drop from the tray to the bottom of the cooking chamber 20.例文帳に追加The small pieces of food that have fallen roll toward the drain port 20c due to the convection hot air, and the drain port 20c may be blocked by the small pieces of food. Small pieces of food rolling toward the drain port 20c of the cooking chamber 20 due to the convection of hot air are restricted from moving toward the inside of the drain port 20c by the rising portion 53 of the filter portion 52, so that they are inserted inside the drain port 20c. It becomes difficult to fall into the fitting/insertion recess 54 . As a result, a state is maintained in which water and air in the cooking chamber 20 can pass through the fitting recess 54 to the drain tank 17 through the first drain pipe 16 .

As shown in FIG. 10B, when the user places the perforated plate 50 upside down on the upper side of the drain port 20c, the rising portion 53 is larger than the diameter of the drain port 20c, and the perforated plate 50 Since there is no upwardly protruding part or the like, the upside-down perforated plate 50 does not tilt obliquely, and the rising portion 53 can cover the periphery of the drain port 20c. Also, small pieces of food are prevented from moving toward the inside of the drain port 20c by the raised portion 53 of the perforated plate 50, which is turned upside down, so that the drain port 20c is not blocked by solids such as small pieces of food. can be made At this time, even if the periphery of the rising portion 53 is blocked by a solid object such as a small piece of food material, the insertion recess 54 arranged so as to protrude from the upper side of the drain port 20c is not blocked. The plate 50 can block the drain port 20c in a state in which water and air can flow through the cooking chamber 20.例文帳に追加In this embodiment, the diameter of the top portion of the rising portion 53 is larger than the diameter of the drain port 20c, and the top portion of the rising portion 53 is arranged outside the drain port 20c. However, even if the diameter of the top portion of the rising portion 53 is smaller than the diameter of the drain port 20c, the vicinity of the top portion of the rising portion 53 is fitted into the drain port 20c, and small pieces of food material enter the drain port 20c. can prevent

As shown in FIG. 9, the machine room 12 of the housing 11 is provided with a steam generator 60 for supplying steam into the cooking chamber 20 . The steam generator 60 heats water by induction heating to generate steam, and is erected above the drain tank 17 provided in the machine room 12 . The steam generating device 60 includes a cylindrical steam generating container 61 that stores water at a predetermined level, a heating element 62 that heats the water in the steam generating container 61, and a heating element that is wound around the outer periphery of the steam generating container 61 to heat the water. An induction heating coil 63 that heats the body and a steam delivery cylinder 64 that delivers the steam generated in the steam generation container 61 to the cooking chamber 20 are provided. The steam delivery tube 64 is connected to a steam introduction port 20b formed in the left side wall of the cooking chamber 20, and the steam generated in the steam delivery tube 64 and the steam generation container 61 passes through the steam delivery tube 64 and into the steam introduction port 20b. is sent into the cooking chamber 20 from the

As shown in FIG. 11 , the heating cooker 10 includes a control device 70 that is connected to the heater 25 , the convection fan 26 , the temperature sensor 27 and the steam generator 60 . The control device 70 has a microcomputer (not shown), and the microcomputer has a CPU, a RAM, a ROM and a timer (all not shown) connected via a bus.

The control device 70 has a cooking program for cooking the ingredients in the cooking chamber 20 in the ROM. The cooking program consists of a hot air mode cooking program in which the heater 25 and the convection fan 26 are operated to heat and cook the ingredients with convection hot air, and a convection fan 26 and the steam generator 60 are operated to operate the convection hot air containing steam. There are three types of cooking programs: a steam mode cooking program for heating and cooking foodstuffs, and a combination mode cooking program for heating and cooking foodstuffs with high-temperature hot air containing steam that actuates the heater 25, the convection fan 26, and the steam generator 60 to convect. It has a cooking program. The ROM stores a cooking program in which the set temperature, steam amount, and cooking time in the cooking chamber 20 are set in advance. It is configurable.

When the hot air mode cooking program of the cooking program is executed, the air in the cooking chamber 20 becomes hot air due to the operation of the heater 25 and the convection fan 26, and the ingredients accommodated in the cooking chamber 20 convect hot air. cooked by When the combination mode cooking program of the cooking program is executed, the heater 25 and the convection fan 26 operate to convect the air in the cooking chamber 20 into hot air. By supplying steam from the cooking chamber 20, the hot air convecting in the cooking chamber 20 contains steam, and the foodstuffs stored in the cooking chamber 20 are cooked by the hot air containing steam and convecting.

The heating cooker 10 configured as described above includes a cooking chamber 20 for cooking ingredients, a heater 25 for heating the interior of the cooking chamber 20, a convection fan 26 for convecting the air in the cooking chamber 20, and the cooking chamber 20. and a perforated plate 50 covering the drain port 20c so as to allow water to flow and air to pass through. In this heating cooker 10, the perforated plate 50 includes an annular frame portion 51 having a diameter larger than the drain port 20c of the cooking chamber 20, and a filter portion 52 using a net member provided inside the annular frame portion 51. The filter portion 52 has an annular raised portion 53 that rises upward outside the drain port 20c, and a fitting recess 54 that is recessed inside the raised portion 53 so as to be fitted into the drain port 20c.

Since the filter portion 52 of the perforated plate 50 has a raised portion 53 that rises upward on the outside of the drain port 20c inside the annular frame portion 51, the movement of solids such as small pieces of food is blocked by the raised portion 53. As a result, it becomes difficult to enter the fitting recess 54 in the drain port 20c. As a result, the perforated plate 50 is less likely to become incapable of passing water and air, and the drain port 20c is less likely to be clogged with solids such as small pieces of food. In addition, since there is no projection on the upper side of the perforated plate 50, such as a stand for standing up the tablet-shaped solid detergent as described in the prior art, the perforated plate 50 is attached to the drain port 20c upside down. When it is closed, the perforated plate 50 is inclined to the periphery of the drain port 20c and becomes difficult to attach.

Further, even when the perforated plate 50 is turned upside down and attached to the drain port 20c, the upper side of the drain port 20c is covered by the fitting recess 54 while the rising portion 53 is in contact with the periphery of the drain port 20c. It becomes a water-permeable and air-permeable covering. As a result, the drain port 20c is covered with the perforated plate 50 turned upside down so as to allow water to flow and air to pass through, and it is possible to prevent solids such as small pieces of food from entering the drain port 20c.

In the heating cooker 10 configured as described above, the following modifications may be implemented in order to change how the hot air hits the tray containing the foodstuff carried into the cooking chamber 20. In the modification shown in FIG. 12, rails 24a of support frame 24 are formed with hot air passage openings 24b for introducing hot air to the upper side of the tray. When this is done, the hot air can pass through the upper and lower trays, particularly the lower tray, where the hot air cannot easily pass, and the heating of each tray can be improved.

In the heating cooker 10, the upper end and the lower end of the partition plate 23 are formed with bent portions bent toward the food storage chamber, and the insertion holes formed in the upper and lower bent portions are inserted into the cooking chamber 20. The partition plate 23 is detachably attached in the cooking chamber 20 by inserting the attachment pins provided at the top and bottom. When attaching the partition plate 23, while lifting the partition plate 23 obliquely, insert the mounting pin on the upper side of the cooking chamber 20 into the insertion hole of the bent portion on the upper side of the partition plate 23, and then raise the partition plate 23 vertically. He is trying to insert the attachment pin of the lower side of the cooking chamber 20 into the insertion hole of the bending part 23c of the lower side of the partition plate 23, moving below. In this case, the vertical width of the upper air passage 23b is increased, and there is a risk that the foodstuffs in the trays stored in the upper part of the cooking chamber 20 will be subjected to a large amount of heat.

In the modification shown in FIG. 13, a mounting hole 23e is formed in the lower end of the partition plate 23 and continues to the insertion hole 23d of the bent portion 23c on the lower side. A stopper 23f made of a plate spring member that is detachably engaged with the mounting pin 20e is provided. By forming the attachment hole 23e continuous with the insertion hole 23d of the bent portion 23c on the lower side in the lower end portion of the partition plate 23, the insertion hole 23d of the bent portion 23c on the upper side of the partition plate 23 is inserted into the insertion hole 23d of the upper side of the cooking chamber 20. Insert the mounting pin (not shown) of the partition plate 23, insert the mounting pin 20e on the lower side of the cooking chamber 20 into the mounting hole 23e at the lower end of the partition plate 23 without standing the partition plate 23 vertically. A stopper 23f is engaged with the mounting pin 20e at the lower end. By forming the attachment hole 23e continuous with the insertion hole 23d of the bent portion 23c in the lower end portion of the partition plate 23, the partition plate 23 is lifted upward and then inserted into the attachment pin 20e on the lower side of the cooking chamber 20 from above. no longer needed. As a result, the space of the ventilation path 23b between the upper surface of the cooking chamber 20 and the upper side of the partition plate 23 can be reduced, and the degree of heating of the foodstuffs in the tray stored in the uppermost stage in the cooking chamber 20 can be suppressed. can be done.

DESCRIPTION OF SYMBOLS 10... Heating cooker 20... Cooking chamber 20c... Drain port 25... Heater 26... Convection fan 50... Perforated plate 51... Frame part 52... Filter part 53... Rising part 54... Insertion recess .

Claims (1)

a cooking chamber for heating and cooking ingredients;
a heater for heating the interior of the cooking chamber;
A convection fan for convecting the air in the cooking chamber;
a drainage port provided at the bottom of the cooking chamber;
A heating cooker comprising a perforated plate that covers the drain port so that water can flow and air can flow,
The perforated plate includes an annular frame portion having a diameter larger than that of the drainage port, and a filter portion using a mesh member provided inside the annular frame portion,
The filter portion includes an annular rising portion that rises upward outside the drain port, and a fitting recess that is recessed so as to be fitted and inserted into the drain port inside the rising portion. Cooking device.

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