JP2021004693A - Cooker - Google Patents

Abstract

To inhibit detergent bubbles from leaking from an exhaust cylinder erected in a drain tank in a cooker in which the cooking chamber is washed by circulating washing water in the drain tank and the cooking chamber.SOLUTION: A cooker 10 includes: a cooking program for cooking a food material accommodated in a cooking chamber 20 by actuating at least one of a heater 25 and a steam generation device 30, and a convection fan 26; and a washing program for jetting washing water in a drain tank 40 from a washing nozzle 28 to the inside of the cooking chamber 20 by actuating a pump 19, returning the jetted washing water to the drain tank 40 from an exhaust port 20c, and washing the inside of the cooking chamber by the washing water circulating in the drain tank 40 and the cooking chamber 20. The lower end 17a1 of an exhaust cylinder 17 is disposed at a position lower than a water level WL2 when the washing program is executed, and the washing water is circulating in the drain tank 40 and the cooking chamber 20.SELECTED DRAWING: Figure 10

Description

The present invention relates to a cooker for cooking foodstuffs with hot air such as a steam convection oven, and more particularly to a cooker with a washing function for a kitchen.

Patent Document 1 below discloses a cooking cooker that cooks ingredients by heating with hot air. The cooking cooker includes a cooking cabinet provided in a housing, a heater for heating the inside of the cooking cabinet, and a cooking cabinet. It is equipped with a convection fan for convection of the air inside and a steam generator for supplying steam to the inside of the kitchen. When a cooking program is executed with this cooker, the heater and the convection fan operate to turn the air in the kitchen into hot air and convection, and the steam generator supplies steam to the kitchen. , The air in the kitchen becomes hot air containing steam and contradicts, and the foodstuffs stored in the kitchen are cooked by the hot air containing steam.

This cooking cooker includes a drainage port provided at the bottom of the kitchen, a drainage tank connected to the drainage port via a drainage pipe, and an exhaust pipe erected in the drainage tank. When steam is supplied for cooking, the air in the kitchen is discharged to the outside through the drain pipe, the drain tank, and the exhaust pipe.

When foodstuffs are cooked in the kitchen, the oil contained in the foodstuffs scatters in the kitchen together with the convected hot air, and the oils adhere to the peripheral wall of the kitchen. In this type of cooking cooker, it is necessary to keep the inside of the cooking cabinet clean at all times, and it is hygienic to clean the cooking cabinet every day, for example. This cooking cooker is provided with a washing nozzle on the ceiling of the kitchen, and the washing nozzle has a mounting head fixed to the ceiling of the cooking cabinet, a sleeve rotatably loosely fitted to the mounting head, and a diameter from the sleeve. It is equipped with an injection pipe that extends in the direction. When cleaning water is supplied to the cleaning nozzle when cleaning the inside of the kitchen with this heating cooker, the cleaning water is injected from the injection port at the tip of the injection pipe, so that the injection pipe is driven by the cleaning water injected from the injection port. It rotates together with the sleeve, and the washing water is injected from the rotating injection pipe to the entire peripheral wall in the kitchen.

JP-A-2015-155777

In this type of cooker, washing water containing detergent is repeatedly circulated in the cooker because the oil scattered in the cooker is burned to the peripheral wall of the cooker by the high-temperature hot air during cooking. preferable. When washing by repeatedly circulating the washing water containing detergent in the kitchen, the washing nozzle provided in the kitchen and the drain tank connected to the drain port of the kitchen are connected by a washing water supply pipe. Make the wash water circulate between the drain tank and the kitchen. In addition, if you put detergent in the kitchen and dissolve the detergent in the washing water that circulates between the drain tank and the kitchen, and repeatedly circulate the washing water containing the detergent between the drain tank and the kitchen, the inside of the kitchen will be filled. It will be washed with washing water containing detergent. At this time, the washing water containing the detergent foams in the process of circulating between the drain tank and the kitchen, the detergent foam flows inward from the lower end of the exhaust stack, and the inflowing foam rises in the exhaust stack and goes outward. There was a risk of leakage. The present invention prevents detergent bubbles from leaking from an exhaust stack erected in a drain tank in a cooking cooker in which washing water is circulated between a drain tank and a kitchen to wash the inside of the cooker. The purpose is to do.

In order to solve the above problems, the present invention provides a kitchen for cooking ingredients, a heater for heating the inside of the kitchen, a convection fan for convection of air in the kitchen, and steam in the kitchen. A steam generator to supply, a drainage port provided at the bottom of the kitchen to discharge air and water, a drainage tank connected to the drainage port via a drainage pipe, and a drainage tank erected in the kitchen. An exhaust stack that discharges the air discharged from the drain pipe to the outside, a cleaning nozzle that is installed on the ceiling of the kitchen and ejects cleaning water, and a cleaning nozzle that includes a drain pipe and a drain tank. The washing water path to be sent, the pump that sends the washing water in the drain tank to the washing nozzle, which is interposed in the washing water supply pipe, and at least one of the heater and the steam generator and the convection fan are operated to enter the kitchen. A cooking program that heats and cooks the stored ingredients and the washing water from the drain tank is ejected from the washing nozzle into the kitchen by operating a pump, and the ejected washing water is returned to the drain tank from the drain port again to drain the tank. It is a heating cooker with a cleaning function of the kitchen equipped with a cleaning program that cleans the inside of the kitchen with the washing water that circulates between the kitchen and the kitchen. It provides a heating cooker with a washing function of a kitchen, which is characterized in that the drainage tank and the kitchen are arranged at a position lower than the water level when circulating.

In the heating cooker configured as described above, the lower end of the exhaust stack was placed at a position lower than the water level when the washing water was circulating between the drain tank and the kitchen by executing the washing program, so the detergent was placed. Even if the containing wash water foams in the process of circulating between the drain tank and the kitchen, the detergent bubbles do not flow into the inside from the lower end of the exhaust stack because they float above the surface of the wash water in the drain tank. Bubbles no longer leak out of the drain.

It is a front view of one Embodiment of the cooking apparatus of this invention. It is a front view with the door of FIG. 1 open. It is a vertical sectional view in the central part in the front-rear direction. It is a cross-sectional view of AA. It is a cross-sectional view of AA when the partition plate and the support frame are removed. It is a left side view which made the machine room visible by removing the left panel of a housing. It is the schematic of the washing water passage between a drainage tank and a washing nozzle. It is a cross-sectional perspective view of BB. It is a perspective view (a) of a drainage tank and the perspective view (b) of a drainage tank with a lid removed. It is a plan view (a), a CC sectional view (b), a DD sectional view (c), and an EE sectional view (d) of a drainage tank. It is a block diagram of a control device. It is a flowchart which shows the control of the 1st cleaning program.

An embodiment of the cooking apparatus of the present invention will be described below with reference to the accompanying drawings. The cooking device of the present invention is called a steam convection oven, and cooks food by convection of hot air containing steam. In addition, this heating cooker allows the washing water to be stored in a drain tank connected to the drain port of the cooking room via a drain pipe, and the washing water is circulated between the drain tank and the cooking room. It is a heating cooker with a washing function for the kitchen that cleans the inside. As shown in FIG. 1, the cooking cooker 10 has a machine room 12 on the left side of the housing 11 and a cooking chamber 20 in the housing 11 excluding the machine room 12 for cooking food. I have. As shown in FIG. 2, the front portion of the cooking cabinet 20 is provided with an opening 20a for putting in and taking out foodstuffs, and the opening 20a is provided with a door 13 for opening and closing the opening.

As shown in FIGS. 2 and 3, the kitchen 20 is for accommodating and cooking foods, and the portion other than the left side of the kitchen 20 is used as the food storage chamber 21 for accommodating foods for cooking. The left side portion of the storage 20 is used as a hot air generation chamber 22 for generating hot air to be sent to the food storage chamber 21. As shown in FIGS. 3 and 4, a partition plate 23 for partitioning the food storage chamber 21 and the hot air generation chamber 22 is provided on the left side of the central portion in the left-right direction of the cooking cabinet 20. The partition plate 23 is provided with a suction port 23a having a large number of openings, and the air in the food material storage chamber 21 is sent to the hot air generation chamber 22 through the suction port 23a. Further, the partition plate 23 is attached to the cooking cabinet 20 so that a ventilation passage 23b is formed between the ceiling wall, the bottom wall, the front wall and the rear wall of the cooking cabinet 20, and the air in the hot air generation chamber 22 is provided. It is sent to the food storage room 21 through the ventilation passage 23b.

As shown in FIGS. 2 to 4, the food storage chamber 21 of the cooking cabinet 20 is provided with a pair of left and right support frames 24 for vertically supporting trays called hotel bread in a multi-stage manner. Each support frame 24 includes a pair of front and rear columns 24a and rails 24b fixed to the front and rear columns 24a to support the left and right edges of the tray.

As shown in FIGS. 3 and 5, a heater 25 and a convection fan 26 are provided on the left side of the cooking cabinet 20. The heater 25 heats the cooking cabinet 20, and the convection fan 26 convections the air in the cooking cabinet 20. The heater 25 is wound in a ring around the left wall of the kitchen 20. Further, a convection fan 26 is arranged inside the heater 25 wound in an annular shape. When the heater 25 and the convection fan 26 are operated, the air in the food storage chamber 21 is sent to the hot air generation chamber 22 through the suction port 23a, and the air blown outward from the convection fan 26 in the centrifugal direction is the hot air generation chamber 22. Inside, it is heated by the heater 25 to become hot air, and the heated hot air is sent to the food storage chamber 21 through the ventilation passage 23b between the partition plate 23 and each wall of the kitchen 20. As shown in FIG. 5, a temperature sensor 27 is provided on the left side wall of the cooking cabinet 20, and the temperature sensor 27 detects the temperature inside the cooking cabinet 20.

As shown in FIG. 6, the machine room 12 of the housing 11 is provided with a steam generator 30 that supplies steam into the cooking chamber 20. The steam generator 30 heats water by induction heating to generate steam, and is installed above the drainage tank 40 for draining drainage from the kitchen 20. The steam generator 30 includes a tubular steam generator 31 that stores water at a predetermined water level, a heating body that heats the water in the steam generator 31 (not shown), and a winding around the outer periphery of the steam generator 31. Steam delivery that is connected to the induction heating coil 32 that heats the heating body and is connected to the steam introduction port 20b (shown in FIG. 5) of the cooking cabinet 20 and sends the steam generated in the steam generating container 31 to the cooking cabinet 20. It includes a cylinder 33 and a water level detection tank 34 arranged at a position adjacent to the steam generating container 31.

The lower end of the steam generating container 31 is connected to the drain tank 40, and a drain valve (not shown) is provided in the lower part of the steam generating container 31. The water in the steam generation container 31 is drained to the drain tank 40 by opening the drain valve. The lower part of the steam generation container 31 is connected to the lower part of the water level detection tank 34, and the water level in the steam generation container 31 is the same as that of the water level detection tank 34. A water level sensor (not shown) including a float switch is provided in the water level detection tank 34, and the water level sensor detects the water level in the steam generation container 31 by detecting the water level in the water level detection tank 34. There is. A water supply pipe 36 derived from the water supply source is connected to the water level detection tank 34, and the water of the water supply source is sent to the steam generation container 31 via the water level detection tank 34 through the water supply pipe 36. An overflow pipe 35 is connected to the water level detection tank 34, and the overflow pipe 35 is connected to the drainage tank 40. The water excessively supplied from the water supply pipe 36 to the water level detection tank 34 is discharged to the drainage tank 40 through the overflow pipe 35.

As shown in FIGS. 3 and 7, a drainage port 20c is formed at the bottom of the cooking chamber 20, and a drainage port 20c is connected to the drainage port 20c. The drainage route of this embodiment includes a first drainage pipe 14 connected to the drainage port 20c, a drainage tank 40 connected to the first drainage pipe 14, and a second drainage pipe 15 connected to the drainage tank 40. I have. Further, a drain valve 16 is interposed in the second drain pipe 15, and the drain valve 16 blocks the passage of water in the second drain pipe 15 in a closed state. The drain valve 16 is opened during cooking, and the water generated in the kitchen 20 during cooking is discharged to the outside through the first drain pipe 14, the drain tank 40, and the second drain pipe 15. To. Similarly, the water drained from the steam generator 30 is discharged to the outside through the drain tank 40 and the second drain pipe 15. An exhaust pipe 17 is erected in the drain tank 40, and the air in the kitchen 20 during cooking is discharged to the outside through the first drain pipe 14, the drain tank 40, and the exhaust pipe 17. The first drain pipe 14, the drain tank 40, and the exhaust pipe 17 serve as exhaust paths.

As shown in FIGS. 3, 7, and 8, a cleaning nozzle 28 is provided on the ceiling of the cooking cabinet 20, and the cleaning nozzle 28 is connected to the drain port 20c of the cooking cabinet 20 by a cleaning water path. There is. The washing water path of this embodiment utilizes a part of the drainage path and the exhaust path, and cleans the first drainage pipe 14, the drainage tank 40, and the upstream side of the second drainage pipe 15 from the drainage valve 16. It is provided with a washing water supply pipe 18 for connecting to the nozzle 28. A pump 19 is interposed in the washing water supply pipe 18, and the pump 19 sends the washing water in the drainage tank 40 to the washing nozzle 28.

As described above, the drainage tank 40 constitutes not only the drainage path and the exhaust path but also a part of all the paths of the washing water path, and the structure for the drainage tank 40 to function as all these paths. It will be described in detail below. As shown in FIG. 9, the drainage tank 40 has a substantially rectangular tank portion 41 whose upper surface is opened so as to allow water and air to pass through and to store washing water, and a lid portion 42 which closes the upper surface opening of the tank portion 41. And have.

As shown in FIGS. 9 and 10, on the right side wall of the tank portion 41, an inflow port 41a, a first outflow port 41b, and a second outflow port 41c are formed in this order from the front side. The inflow port 41a is formed in the upper part of the right side wall of the tank portion 41, and is connected to the drainage port 20c of the cooking cabinet 20 by the first drainage pipe 14. The first outlet 41b is formed in the lower part of the right side wall at the lowest position of the tank portion 41, and is connected to the second drain pipe 15. The second outflow port 41c is formed in the upper part of the right side wall of the tank portion 41, and is connected downstream from the drain valve 16 of the second drain pipe 15 by the overflow pipe 43. The second outlet 41c is formed at a position slightly higher than the height position at which the required amount of washing water for circulation with the cooking chamber 20 is stored, and the excess washing water is discharged in the tank portion 41. belongs to. In order to arrange the first and second drainage pipes 14 and 15 and the overflow pipe 43 together, the inflow port 41a and the outflow ports 41b and 41c are arranged together on the right side wall of the tank portion 41.

As shown in FIGS. 8 to 10, the tank portion 41 is provided with a guide 41d between the inflow port 41a and the first outflow port 41b. The guide 41d extends from the right wall of the tank portion 41 to the left side slightly from the central portion in the left-right direction. The water flowing from the inflow port 41a flows along the guide 41d to the left side of the tank portion 41, and the water flowing to the left side of the tank portion 41 flows along the guide 41d to the right side where the first outlet 41b is arranged. Flow to.

As shown in FIGS. 8 and 10 (c), a holding plate 41e covering the upper side of the first outlet 41b is provided on the right side of the tank portion 41, and the holding plate 41e circulates washing water. It has a function of reducing the generation of vortices around the first outlet 41b when it is present. In a state where water such as washing water can pass between the left end portion of the holding plate 41e and the bottom wall of the tank portion 41, the holding plate 41e passes around the first outlet 41b above the first outlet 41b. Covering.

A water supply port 41f is formed on the front wall of the tank portion 41, and a water supply pipe 44 (shown in FIGS. 6 and 7) for supplying water (washing water) from a water supply source such as a water supply is formed at the water supply port 41f. It is connected. The water supplied from the water supply pipe 44 into the drainage tank 40 is used as cooling water for cooling the inside of the drainage tank 40 when the cooking program is executed, and is also used as the washing water for the washing program. As shown in FIGS. 6 and 7, a water supply valve 45 and a flow meter 46 are interposed in the water supply pipe 44. The water of the water supply source is supplied into the drainage tank 40 through the water supply pipe 44 by opening the water supply valve 45. The flow meter 46 measures the flow rate of water passing through the water supply pipe 44 when the water supply valve 45 is opened.

As shown in FIGS. 9A and 10, the lid portion 42 covers the upper surface opening of the tank portion 41, and the lid portion 42 has a joint portion 42a connected to the lower end portion of the steam generator 31. An overflow pipe lower part 35a constituting the lower part of the overflow pipe 35 of the steam generator 30 and an exhaust pipe lower part 17a forming the lower part of the exhaust pipe 17 are provided. The joint portion 42a is attached so as to penetrate the lid portion 42, and the lower end portion of the steam generating container 31 is connected to the joint portion 42a by a fastening member such as a nut.

The overflow pipe lower component 35a is attached so as to penetrate the lid 42, and the overflow pipe 35 of the steam generator 30 is connected to the overflow pipe lower component 35a. The lower end of the overflow pipe lower component 35a is arranged at a position lower than the water level when the washing program is executed and the washing water circulates in the drain tank 40 and the cooking chamber 20. The exhaust stack lower component 17a is attached so as to penetrate the lid 42, and the exhaust stack 17 is connected to the exhaust stack lower component 17a. The lower end 17a1 of the exhaust stack lower component 17a is arranged at a position lower than the water level when the cleaning program is executed and the cleaning water circulates in the drain tank 40 and the cooking chamber 20.

As shown in FIG. 11, the heating cooker 10 includes a control device 50, and the control device 50 includes a drain valve 16, a pump 19, a heater 25, a convection fan 26, a temperature sensor 27, a steam generator 30, and a water supply. It is connected to the valve 45 and the flow meter 46. The control device 50 includes a microcomputer (not shown), and the microcomputer includes a CPU, a RAM, a ROM, and a timer (all of which are not shown) connected via a bus.

The control device 50 includes a cooking program in which the ingredients in the kitchen 20 are cooked 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 food by the convection hot air, and the convection fan 26 and the steam generator 30 are operated to operate the convection hot air containing steam. There are three types of cooking programs: a steam mode cooking program that cooks ingredients by heating, and a combination mode cooking program that heats and cooks ingredients with high-temperature hot air containing convection steam by operating the heater 25, convection fan 26, and steam generator 30. It has a cooking program. The ROM stores a cooking program in which the set temperature, the amount of steam, and the cooking time in the kitchen 20 are preset, and the user can store the set temperature, the amount of steam, and the cooking time of the cooking program 20 in the cooking program. It is possible to set.

Hot air mode of the cooking program When the cooking program is executed, the air in the cooking cabinet 20 becomes hot air and convection due to the operation of the heater 25 and the convection fan 26, and the foodstuffs stored in the cooking cabinet 20 are convected hot air. Cooked by. Further, when the combination mode cooking program of the cooking program is executed, the air in the cooking chamber 20 becomes hot air and convection due to the operation of the heater 25 and the convection fan 26, and the steam generator 30 enters the cooking chamber 20. By supplying steam, the hot air convected in the kitchen 20 comes to contain steam, and the foodstuffs stored in the kitchen 20 are cooked by the hot air convected containing steam.

The control device 50 includes a cleaning program for cleaning the inside of the cooking chamber 20 in the ROM. The cleaning program includes a first cleaning program that performs a steam pre-cleaning process that pre-cleans the inside of the kitchen 20 with steam, and one or more cleaning processes that clean the inside of the kitchen 20 with high-temperature cleaning water, and a steam pre-cleaning. It is provided with a second cleaning program that executes one or more cleaning processes for cleaning the inside of the kitchen 20 with high-temperature cleaning water without executing the treatment, and the first and second cleaning programs can be selected. In the first and second cleaning programs, the cleaning process is controlled to be executed four times as an example. In the first cleaning process, the detergent placed on the drainage plate 20d provided at the drainage port 20c is dissolved in the cleaning water circulating between the drainage tank 40 and the kitchen 20 to clean the inside of the kitchen 20 containing the detergent. It is washed with water. In the second and subsequent cleaning treatments, the cleaning water containing no detergent is circulated between the drain tank 40 and the cooking chamber 20, and the first cleaning water containing the detergent is rinsed off.

Next, the first cleaning program will be described as an example of the cleaning program. When cleaning the inside of the kitchen 20, the cleaning program is executed after the detergent is placed on the drainage plate 20d provided in the drainage port 20c. As shown in FIG. 12, in the first cleaning program, the control device 50 executes the steam pre-cleaning process in step 101. The steam pre-cleaning process is a process of floating oil stains adhering to the inside of the cooking chamber 20 by steam supplied from the steam generator 30. In this steam pre-cleaning process, the control device 50 controls the operation of the steam generator 30 as a predetermined time for 30 minutes so that the steam cleaning temperature is 95 ° C. based on the detection temperature of the temperature sensor 27. The oil stains adhering to the cooking chamber 20 are floated by the steam supplied from the steam generator 30, and are easily washed away by the cleaning treatment described later.

The control device 50 executes the cleaning process in step 102 after the pre-cleaning process in step 101. The cleaning process of step 102 is repeated four times in this embodiment, the first cleaning process is to wash the inside of the kitchen 20 with washing water containing detergent, and the second and subsequent cleaning treatments include detergent. The washing is performed by rinsing the washing water containing the detergent remaining in the kitchen 20 with no washing water.

In the cleaning process, when the control device 50 opens the water supply valve 45 based on the flow rate detected by the flow meter 46 until the water level (water amount) shown by WL1 in FIG. 10 is reached, the drain tank 40 is cleaned. Water is supplied at the water level (water volume) shown in FIG. After that, when the control device 50 operates the pump 19, the cleaning water in the drain tank 40 is sent to the cleaning nozzle 28 and ejected into the cooking chamber 20. The washing water ejected from the washing nozzle 28 into the kitchen 20 returns to the drain tank 40 again from the drain port 20c, and the washing water circulates in the drain tank 40 and the cooking room 20. At this time, since a part of the washing water passes through the washing water supply path and is scattered in the cooking chamber 20, the water level (water amount) in the drainage tank 40 is the water level (water amount) shown by WL2 in FIG. The amount of water).

The detergent placed on the upper side of the drainage plate 20d of the drainage port 20c becomes soluble in the washing water when the circulating washing water passes through the drainage port 20c, and the cooking chamber 20 contains the cleaning water from the washing nozzle 28. Washing water will be spouted out. Further, in this cleaning process, the control device 50 operates the pump 19 and the heater 25 and the convection fan 26, and the cleaning water ejected from the cleaning nozzle 28 into the cooking chamber 20 is heated by the heater 25. It becomes high-temperature washing water and is scattered to every corner in the kitchen 20 by the convection fan 26. The washing water containing the detergent becomes foamy in the process of circulating in the washing water path and in the process of scattering into the kitchen 20.

In the cleaning process, the control device 50 controls the operation of the heater 25 so that the cleaning temperature is 90 ° C. based on the detection temperature of the temperature sensor 27. When 30 minutes have passed since the pump 19, the heater 25, and the convection fan 26 were operated, the control device 50 stopped the operation of the pump 19, the heater 25, and the convection fan 26, and set the drain valve 16 as the predetermined time. After opening for a minute, the washing water in the drain tank 40 is drained to complete the washing process.

When the first cleaning process is completed, the control device 50 determines in step 103 whether or not the cleaning process has been executed four times, determines NO until the cleaning process is executed four times, and performs the cleaning process in step 102. Execute repeatedly. As described above, the second and subsequent cleaning treatments are for rinsing the washing water containing the detergent remaining in the cooking chamber 20 with the washing water containing no detergent. In the second and subsequent cleaning processes, the control device 50 controls the water supply valve 45, the pump 19, the heater 25, and the convection fan 26 in the same manner as in the first cleaning process. The inside of the cooking chamber 20 is washed away by the rinsing washing water circulating between the drainage tank 40 and the cooking chamber 20.

When the washing treatment with the washing water containing the detergent and the washing treatment with the washing water for rinsing are executed four times in total, the control device 50 determines YES in step 103 and proceeds to the drying treatment in step 104. The control device 50 operates the convection fan 26 in step 104, and controls the operation of the heater 25 based on the temperature detected by the temperature sensor 27 so that the temperature inside the cooking chamber 20 becomes 200 ° C. The rinsing wash water remaining in the kitchen 20 is evaporated by the hot air convected by the convection fan 26 while being heated by the heater 25, and the kitchen 20 is in a dry state without leaving any wash water. When 30 minutes have elapsed as a predetermined time from operating the heater 25 and the convection fan 26, the control device 50 stops the operation of the heater 25 and the convection fan 26 to end the drying process.

The heating cooker 10 configured as described above includes a cooking cabinet 20 for cooking ingredients, a heater 25 for heating the inside of the cooking cabinet 20, a convection fan 26 for convection of air in the cooking cabinet 20, and cooking. A steam generator 30 that supplies steam into the refrigerator 20, a drainage port 20c provided at the bottom of the kitchen 20, a drainage tank 40 connected to the drainage port 20c via a first drainage pipe 14, and a drainage tank. An exhaust stack 17 that stands upright at 40 and discharges air discharged from the kitchen 20 through the first drain pipe 14 to the outside, and a cleaning nozzle provided on the ceiling of the kitchen 20 to eject cleaning water. 28, a washing water path including the first drain pipe 14 and the drain tank 40 to send the washing water to the washing nozzle 28, and a pump 19 intervening in the washing water path to send the washing water in the drain tank 40 to the washing nozzle. A cooking program in which at least one of the heater 25, the steam generator 30, and the convection fan 26 is operated to heat and cook the foodstuffs stored in the kitchen 20, and the pump 19 is operated with the washing water of the drain tank 40. The cleaning nozzle 28 is ejected into the kitchen 20 and the ejected washing water is returned to the drain tank 40 again from the drain port 20c, and the inside of the kitchen 20 is washed with the washing water circulating between the drain tank 40 and the cooking chamber 20. It has a cleaning program to do.

In the cooking cooker 10, the lower end 17a1 of the exhaust stack lower component 17a constituting the lower portion of the exhaust stack 17 executes a cleaning program, and the water level WL2 when the cleaning water circulates in the drain tank 40 and the kitchen 20. It is located at a lower position than. When the cleaning program is being executed, in the first cleaning process, the cleaning water containing the detergent foams in the process of circulating between the drain tank 40 and the kitchen 20, but the detergent foam is in the drain tank 40. Since it floats on the upper side of the surface of the washing water, the detergent foam does not flow into the inside from the lower end 17a1 of the exhaust stack 17, so that the detergent foam does not leak to the outside from the exhaust stack 17.

10 ... cooking cooker, 17 ... exhaust stack, 17a1 ... lower end of exhaust stack, 19 ... pump, 20 ... cooker, 25 ... heater, 26 ... convection fan, 28 ... cleaning nozzle, 30 ... steam generator, 40 ... drainage tank.

Claims (1)

A kitchen for cooking ingredients and
A heater that heats the inside of the kitchen and
A convection fan that convects the air in the kitchen,
A steam generator that supplies steam into the kitchen and
A drainage port provided at the bottom of the kitchen and
A drainage tank connected to the drainage port via a drainage pipe,
An exhaust stack that is erected in the drainage tank and discharges the air discharged from the cooking cabinet through the drainage pipe to the outside.
A cleaning nozzle provided on the ceiling of the kitchen and ejecting cleaning water,
A cleaning water path that includes the drainage pipe and the drainage tank and sends cleaning water to the cleaning nozzle,
A pump that is interposed in the washing water path and sends out the washing water in the drainage tank to the washing nozzle.
A cooking program in which at least one of the heater, the steam generator, and the convection fan is operated to heat and cook the foodstuffs stored in the kitchen.
By operating the pump, the washing water of the drain tank is ejected from the washing nozzle into the kitchen, and the ejected washing water is returned to the drain tank again from the drain port, and the drain tank and the kitchen are returned. It is a heating cooker with a washing function of a kitchen equipped with a washing program for washing the inside of the kitchen with washing water circulating in and.
A cooking cooker characterized in that the lower end of the exhaust stack is placed at a position lower than the water level when the washing water is circulated between the drainage tank and the kitchen by executing the washing program.

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