JP7063451B2 - Exhaust system for cooking utensils and cooking method - Google Patents

Description

The present invention relates to an exhaust device for cooking utensils and a cooking method.

In recent years, cooking utensils have been installed on the floors of convenience stores, supermarkets, department stores, etc., and freshly cooked dishes have been provided (sold) to customers.

When cooking in such a store, it may be required to prevent the odor or the like emitted during cooking from drifting in the store.

As a conventional technique, for example, there is a cooking device that covers the periphery of a cooking utensil and exhausts the inside of a space (cooking room) in which an opening is closed by a door. In this cooking device, once the door is closed, the odor does not leak to the outside from the opening, and the odor generated inside is discharged to the outside.

Japanese Unexamined Patent Publication No. 6-74507

However, in the prior art, the blower is always in operation. For this reason, energy conservation, which has been strongly requested in recent years, has not been considered.

Therefore, an object of the present invention is to use an exhaust device for cooking utensils, and an exhaust device for cooking utensils, which can suppress odors from drifting in a room in which a cooking utensil is installed and can meet the demand for energy saving. It is to provide the cooking method that was used.

As a result of diligent research to solve the above problems, the present inventors have found that an energy saving effect can be obtained by controlling the blower according to the open / closed state of the door provided in the kitchen. It came to.

That is, in the present invention, the cooking room for storing the cooking utensils, the door provided in the cooking room, and the air in the cooking room are exhausted to the inside of the room where the cooking room is located or to the outside of the room. It has a blower connected to the exhaust duct of the above, and a control unit that changes the operation of the blower according to the open / closed state of the door .
The control unit
When the door is closed, the blower is stopped or controlled to be the first air volume.
From the time when the door starts to open until the door is fully opened, the blower is controlled so that the third air volume is larger than the first air volume.
It is an exhaust device for cooking utensils that controls the blower to have a second air volume that is larger than the first air volume and smaller than the third air volume after the door is fully opened .

According to the present invention, it is possible to prevent the odor from drifting from the cooking room while the door is closed, and the operation of the blower is changed according to the open / closed state of the door. Compared with the case where the blower is always operated at a constant air volume, the power consumption can be reduced.

It is a front view of the exhaust device for cooking utensils of Embodiment 1. FIG. It is a perspective view of the exhaust device for cooking utensils of Embodiment 1. FIG. It is sectional drawing of the exhaust device for cooking utensils of Embodiment 1. FIG. It is sectional drawing which shows the example which arranged the exhaust device for a cookware for indoor circulation. It is sectional drawing which shows the example which arranged the exhaust device for a cookware for outdoor exhaust. It is a circuit diagram for carrying out the control of control example 1. FIG. It is a circuit diagram for carrying out the control of control example 2. It is a circuit diagram for carrying out the control of control example 3. FIG. It is a front view of the exhaust device for cooking utensils of Embodiment 2. It is sectional drawing of the exhaust device for cooking utensils of Embodiment 2. FIG. It is a circuit diagram for carrying out the control of control example 4. It is sectional drawing of the exhaust device for cooking utensils of Embodiment 3. FIG. It is a block diagram for demonstrating the control of the control example 5. It is a front view of the exhaust device for cooking utensils of Embodiment 4. It is sectional drawing of the exhaust device for cooking utensils of Embodiment 4. FIG. It is a block diagram for demonstrating the control system of control example 6. It is a flowchart which shows the control procedure of control example 6. It is a block diagram for demonstrating the control system of control example 7. It is a flowchart which shows the control procedure. It is sectional drawing of the exhaust device for cooking utensils of Embodiment 6. It is sectional drawing of the exhaust device for cooking utensils of Embodiment 7. FIG. It is sectional drawing of the exhaust device for cooking utensils of Embodiment 8. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. It should be noted that each drawing is exaggerated for convenience of explanation, and the dimensional ratio of each component in each drawing may differ from the actual one. Further, when the embodiment of the present invention is described with reference to the drawings, the same elements are designated by the same reference numerals in the description of the drawings, and duplicate description is omitted.

[Embodiment 1]
<Exhaust device for cooking utensils>
1 is a front view of the cooking utensil exhaust device of the first embodiment, FIG. 2 is a perspective view of the cooking utensil exhaust device of the first embodiment, and FIG. 3 is a cross-sectional view of the cooking utensil exhaust device of the first embodiment.

The cooking utensil exhaust device 101 of the first embodiment has a pedestal 11, a cooking chamber 12 on the pedestal 11, and a blower 20 installed on the cooking chamber 12.

The cooking room 12 is a space covered by a front panel 13a with a door 14, side panels 13b (both sides), a back panel 13c, and a ceiling plate 13d. The front panel 13a covers only the portion where the blower 20 is installed, and the lower portion is open. A door 14 is attached to this opening portion so as to be openable and closable. The side panel 13b, the back panel 13c, and the ceiling plate 13d are each connected to the housing (described later) of the blower 20 without a gap. The front panel 13a is provided with an indicator lamp 18 indicating an operating state of the blower 20. Further, the front panel 13a is also provided with an alarm lamp 18e indicating that the cooking utensil exhaust device 101 has a problem (the same applies to other embodiments). An example in which the alarm lamp 18e lights up is a case where an operation different from the control content is detected, such as the blower 20 does not operate even though the door 14 is opened, or the blower 20 does not stop even if the door 14 is closed. Is.

The door 14 slides up and down inside the front panel 13a and opens when manually raised by the handle 15 and closes when lowered. A packing 16 is provided at the lower end of the door 14. The packing 16 enhances the airtightness in the cooking chamber 12 when the door 14 is closed, and softens the impact when the door 14 is closed. As the packing 16, for example, an elastic material such as rubber or resin can be used, and those having heat resistance and fire resistance are preferable.

A blower 20 is provided in the upper part of the cooking room 12. The blower 20 exhausts the air in the cooking chamber 12. The blower 20 shown in the figure includes a motor 21, a sirocco fan 22, and a housing 35 that houses them. In the blower 20, a sirocco fan 22 is attached to the shaft of the motor 21, and the rotation of the motor 21 causes the sirocco fan 22 to rotate to suck in the air in the cooking chamber 12 and exhaust it from the exhaust port 23. The blower 20 is not limited to such a structure. For example, a propeller fan may be used. Further, the housing 35 is not a single blower, but may be shared with a side panel 13b, a back panel 13c, a ceiling plate 13d in the cooking room 12, and the like.

A grease filter 30 is attached to the upper part of the cooking chamber 12 on the upstream side of the airflow generated by the blower 20 so as to cover the suction port of the blower 20. The grease filter 30 roughly removes oils and fats in the air sucked by the blower 20 and prevents the blower 20 from sucking large dust and the like.

Various filters are attached to the portion of the exhaust port 23 on the downstream side of the blower 20 so as to cover the exhaust port 23. From top to bottom, there are an air filter 31 for removing fine dust and dirt, a deodorizing filter 32 for removing odors, a smoke removing filter 33 for removing smoke, and an oil adsorption filter 34 for removing oil. It is preferable to install all four of these filters, but not all are required. For example, a deodorizing filter 32 may be provided in order to prevent odors from foodstuffs during or before and after cooking from being emitted into the exhaust gas.

Although these filters are attached to the downstream side of the blower 20, the filter is not limited to this position. The various filters may be attached to, for example, the upstream side of the blower 20 (for example, the grease filter portion in the figure).

A shutter 25 that closes the exhaust side is provided on the downstream side of the various filters. By closing the shutter 25, the exhaust side in the cooking chamber 12 is closed. The shutter 25 may be electric or may be opened and closed by an air flow. In the case of the electric shutter 25, the shutter opens and closes according to a signal from the control unit 50 described later. In the case of the shutter 25 that opens and closes due to the air flow, it opens by the pressure of the air flow when the blower 20 starts, and closes by the weight of the shutter 25 when the blower 20 stops and the air flow disappears. Therefore, the shutter 25 that opens and closes due to the air flow opens when the blower 20 operates and closes when the blower 20 stops.

A fire alarm 41 and a fire extinguisher 42 are provided on the ceiling plate 13d of the cooking room 12 toward the inside of the cooking room 12. The fire alarm 41 detects a fire and issues an alarm. The fire alarm 41 is interlocked with the fire extinguisher 42, and the fire extinguishing agent is sprayed at the same time when the fire alarm 41 issues an alarm. The fire extinguisher 42 is connected to a fire extinguishing agent tank 43 provided on the back side (behind the ceiling) of the ceiling plate 13d seen from the cooking room 12, and sprays the fire extinguisher toward the inside of the cooking room 12. Since the exhaust device 101 for cooking utensils has a door 14, the inside of the cooking chamber 12 cannot be seen when the door 14 is closed. Therefore, the fire alarm 41 and the fire extinguisher 42 are provided in case a fire breaks out inside the cooking room 12.

Further, the fire alarm 41 may, for example, stop the blower 20 at the same time as the fire alarm is given. For this purpose, for example, the blower 20 is forcibly stopped by shutting off the main switch or the breaker provided in the cooking utensil exhaust device 101. When an electric shutter is used for the shutter 25, the control unit 50 stops the blower 20 and closes the shutter 25 as well. The electric shutter is urged in the closing direction by the urging force, and when the blower is activated, the shutter is electrically opened so as to oppose the urging force. In this case, when the power is lost, it will be closed due to the urging force. In addition, a backup battery may be provided to operate the electric shutter even when the power is lost. As a result, in the unlikely event that a fire breaks out inside the cooking chamber 12, it is possible to prevent or suppress flames and smoke from going out of the cooking chamber 12 through the exhaust duct.

The fire alarm 41 and the fire extinguisher 42 may not be provided. However, as described above, it is preferable to attach the fire alarm 41 alone because the inside of the cooking room 12 cannot be seen.

A control unit 50 is provided in the upper part of the housing 35 that covers the blower 20 and in the portion that corresponds to the ceiling as seen from the cooking room 12. An open / close sensor 51 is attached to a portion where the door 14 and the gantry 11 are in contact with each other. The open / close sensor 51 is connected to the control unit 50 by a signal line.

The control unit 50 operates the blower 20 in response to the signal of the open / close sensor 51. The control content will be described later. It is preferable that the circuit board of the control unit 50 is housed in the control box and fixed to the upper part of the housing 35. The reason why the control unit 50 (or the control box) is arranged at this position is that the control unit 50 is placed in the vicinity of the blower 20 to facilitate wiring between them at the time of construction. Further, for example, the blower 20 can use the entire housing 35, for example, an existing range hood. In that case, in the existing range hood, since the control unit 50 is inside the housing 35 of the range hood, it is in such a position. Of course, the arrangement of the control unit 50 is not limited to such a position, and may be arranged anywhere.

The open / close sensor 51 detects the open / closed state of the door 14. The door 14 opens and closes by moving up and down. Therefore, the open / close sensor 51 detects that the lower end of the door 14 is in the closed state if it is in contact with the gantry 11, and detects that the lower end of the door 14 is in the open state if it is not in contact with the gantry 11. The time when the signal from the open / close sensor 51 changes from closed to open is defined as the time when the door 14 starts to open. Not limited to this, when the door moves in the direction of opening from the completely closed state, the door may start to open when the operation of the door is first detected by the open / close sensor.

In the figure, the open / close sensor 51 is arranged at an easy-to-understand position for explanation, but in reality, it may be located at any position as long as it can detect the opening / closing of the door 14. In particular, depending on the structure of the open / close sensor 51 to be used, it can be arranged in the ceiling portion of the cooking room 12, and wiring with the control unit 50 becomes easy.

The open / close sensor 51 can use, for example, a switch that turns off (or on) when the lower end of the door 14 touches the gantry 11, and turns on (or off) when the lower end of the door 14 separates from the gantry 11.

The details will be described later, but depending on the control content, a fully open sensor 52 that detects that the door 14 is fully opened may be provided.

The fully open sensor 52 may use, for example, a switch that turns on (or off) when the upper end of the door 14 touches a position where the upper end of the door 14 touches when fully opened, and turns off (or on) when the upper end of the door 14 separates. can.

In addition to such a switch, the open / close sensor 51 and the fully open sensor 52 can use, for example, an optical sensor, a magnetic sensor, or another proximity sensor. Further, the roller or gear may be driven by the movement of the door 14, and the open / closed state of the door 14 may be detected from the amount of movement of the roller or gear. In the case of an open / close sensor (opening sensor) using such a roller or a gear, the opening degree of the door 14 (the amount of opening of the door) can also be known. The content of control using the opening degree will also be described later.

The cooking utensil 200 is stored inside the cooking room 12. The cookware 200 may house, for example, an automated fryer, a roaster, a rice cooker, a cooking pot for simmered dishes, and various cooking robots. An example of an automatic fryer is shown in each figure.

In the first embodiment, the structure in which the cooking utensil 200 (here, the automatic fryer) is placed on the gantry 11 is shown, but the structure is not limited to such a form. It may be a structure embedded inside (downward). In the case of other cooking utensils 200, a structure in which all or a part thereof is embedded in the gantry 11 may be used.

Further, although not shown, a main switch, a breaker, or the like for turning on / off the electric power to the cooking utensil exhaust device 101 may be provided (hereinafter, the same applies to other embodiments).

<Installation example>
The cooking utensil exhaust device 101 can correspond to both indoor circulation in which the exhaust from the cooking room 12 is circulated in the room and outdoor exhaust in which the exhaust from the outside is exhausted to the outside. The cooking utensil exhaust device 101 is installed in a room where cooking is performed using the cooking utensil 200 in the cooking utensil 12. The room to be installed is, for example, in a store such as a convenience store, a supermarket, a drug store, a restaurant, a department store, or an exhibition hall.

(Example of indoor circulation)
FIG. 4 is a cross-sectional view showing an example in which an exhaust device for cooking utensils is arranged for indoor circulation.

As shown in FIG. 4, when the cooking utensil exhaust device 101 is arranged for indoor circulation, it is connected to the exhaust port 23 of the blower 20 and the exhaust duct 501 for indoor circulation. The exhaust duct 501 for indoor circulation is arranged in a portion corresponding to the ceiling of the cooking room 12, and is exhausted into the room from the upper part of the front panel 13a. Therefore, an exhaust port 502 to which the exhaust duct 501 is connected is provided on the upper portion of the front panel 13a.

In the case of indoor circulation, the air from the cooking utensil 12 is exhausted into the room in which the cooking utensil exhaust device 101 containing the cooking utensil 200 is installed. The odor emitted from the cooking room 12 is removed by the deodorizing filter 32. Therefore, even in the case of indoor circulation, it is possible to prevent or suppress the odor from the cooking room 12 from drifting in the room.

Further, when the air is circulated indoors, the air-conditioned air in the room in which the exhaust device 101 for cooking utensils is installed does not go out of this room and returns to the room as it is. In this way, the energy loss of air conditioning can be reduced, and therefore the energy of the entire room in which the cooking room 12 is placed can be saved.

Although the example in which the cooking utensil exhaust device 101 is installed along the wall 500 is shown here, the cooking utensil exhaust device 101 may be installed away from the wall 500. Further, the exhaust duct 501 may be exhausted from the side surface or the back surface, or may be exhausted upward, instead of being exhausted from the front surface.

(Example of outdoor exhaust)
FIG. 5 is a cross-sectional view showing an example in which an exhaust device for cooking utensils is arranged for outdoor exhaust.

As shown in FIG. 5, when the cooking utensil exhaust device 101 is arranged for outdoor exhaust, it is connected to the exhaust port 23 of the blower 20 and the exhaust duct 503 for outdoor exhaust. In order to directly exhaust the exhaust duct 503 to the outside of the room, the exhaust duct 503 goes out to the outside by using a facility opening provided on a wall 500 or the like of a room in which an exhaust device 101 for cooking utensils is installed.

In the case of outdoor exhaust, the air from the cooking utensil 12 is exhausted to the outside of the room in which the cooking utensil exhaust device 101 containing the cooking utensil 200 is installed. Therefore, it is possible to prevent or suppress the odor emitted from the cooking room 12 from drifting into the room.

In the case of outdoor exhaust, especially when exhausting to the outside, various filters including the deodorizing filter 32 may not be provided, but it is preferable to provide these filters in consideration of the neighborhood.

Further, in the case of outdoor exhaust, the cooking utensil exhaust device 101 may be installed away from the wall 500. However, in the case of outdoor exhaust, it is necessary to connect the exhaust duct 501 to a facility opening on the wall surface so that the exhaust can be discharged to the outside of the room.

<Control example>
The open / closed state of the door 14 and the control of the blower 20 according to the open / closed state will be described.

(Control example 1)
Control example 1 is a control example in which the blower 20 is stopped when the door 14 is closed, and the blower 20 is operated with a constant air volume after the door 14 starts to open.

FIG. 6 is a circuit diagram for carrying out the control of the control example 1.

The control example 1 has a simple configuration in which a single-phase AC motor M (AC) is used as the motor 21 of the blower 20 and, for example, a b-contact push button switch is used as the open / close sensor 51. Therefore, in the control example 1, the switch of the open / close sensor 51 also serves as the control unit 50. A capacitor C for determining the rotation direction is connected to the single-phase AC motor. In the case of this control example 1, the fully open sensor 52 may not be present.

In this control example 1, a b-contact push button switch as an open / close sensor 51 is connected to one of the wirings connecting the motor 21 and the AC power supply AC (for example, 100V commercial power supply). Further, the indicator lamp 18 is connected between the motor 21 and the AC power supply AC, and the indicator lamp 18 lights up when electricity flows through the wiring between the motor 21 and the AC power supply.

The b-contact push button switch is provided at a position sandwiched between the lower end of the door 14 and the gantry 11. When the door 14 is closed, the button of the push button switch is pressed to turn it off. When the door 14 opens even a little and the lower end of the door 14 separates from the gantry 11, the button returns and turns on. The door 14 starts to open when this switch (signal from the open / close sensor 51) is switched from off to on.

At the same time when the switch of the open / close sensor 51 is turned on, the motor 21 rotates and the exhaust by the blower 20 is started. At this time, the air volume of the blower 20 is such that when the door 14 is fully opened, the wind speed at the opening portion of the door 14 is 0.2 m / s or more. As for the wind speed of the opening portion, for example, it is preferable that the wind speed is measured at a plurality of points on the plane of the opening portion and the wind speed at all the measurement points is 0.2 m / s or more (the same applies to the other examples below). .. By setting such a wind speed, it is possible to prevent or suppress odor leakage due to the opening of the door 14 in a state where the door 14 is open (after the door 14 starts to open).

In this control example 1, the motor 21 does not operate when the door 14 is closed. That is, when the door 14 is closed, the operation of the blower 20 is stopped. Therefore, when it is not necessary to touch the foodstuff or the cooking utensil 200 in the cooking room 12 such as during cooking, the power supply to the blower 20 can be stopped by closing the door 14. As a result, it is possible to reduce the power consumption as compared with the conventional device in which the blower is always operated.

In control example 1, the motor 21 starts at the same time as the door 14 opens. Therefore, there is a possibility that odor leakage may occur, although it is slight, from the start of the motor 21 to the time when the predetermined rotation speed (the wind speed of the opening portion at the time of fully opening is 0.2 m / s or more) is reached. However, the amount is small and not enough to float in the room, so the effect of suppressing odor is sufficient.

Further, when the door 14 is in the closed state, the packing 16 is used to increase the degree of sealing in the cooking chamber 12, so that odor leakage does not occur.

Here, the energy saving effect will be described with a specific example.

For example, if there is no panel that covers the door 14 or the cooking utensil 200 and it is attempted to prevent the odor from drifting in the room by constantly exhausting the air, the required exhaust air volume is 600 m ³ / h. If the food is fried 25 times in 16h / day (24h) operation, the total displacement will be 8000m ³ / day.

On the other hand, in the case of the control example 1 in the first embodiment, the time for opening the door 14 and exhausting is the time for taking out the fried food and setting the next fried food, which is 5 minutes. When frying 25 times, 5 minutes x 25 times = 125 min (2.1 h). When the displacement is 100 m ³ / h, the total displacement is 210 m ³ / day.

As described above, in the case of the first embodiment, the exhaust air volume can be reduced to 210/8000 × 100 = 2.6%. Therefore, the power consumption for exhausting can be reduced.

Further, even if the door is opened and the exhaust is exhausted, since the cooking utensil 200 is in the cooking chamber 12 covered with the panel, in the first embodiment, the exhaust air volume can be reduced as compared with the case where the cooking utensil 200 is open. This makes it possible to reduce the size of the blower 20 and reduce the power consumption of the equipment associated therewith.

In addition, since the amount of exhaust air is reduced, the filter is less polluted and the filter replacement cycle is lengthened. It also extends the life of the filter. Therefore, it can also contribute to the reduction of running cost.

Although not shown in the circuit diagram, when an electric shutter is used for the shutter 25, it is advisable to wire so that the electric shutter can be opened and closed in synchronization with the on / off of the blower 20 with the motor 21 (). Hereinafter, the same applies to other embodiments).

(Control example 2)
The control example 2 is a control example in which the blower 20 is operated with the first air volume when the door 14 is closed, and the blower 20 is operated with the second air volume after the door 14 starts to open. Here, the first air volume <second air volume, and the second air volume is the air volume at which the wind speed at the opening portion of the door 14 becomes 0.2 m / s or more when the door 14 is fully opened. Here, the first air volume is preferably an air volume that creates a negative pressure in the cooking chamber 12 by exhausting the inside of the cooking chamber 12.

FIG. 7 is a circuit diagram for carrying out the control of the control example 2.

The control example 2 has a simple configuration in which a single-phase AC motor M (AC) is used as the motor 21 of the blower 20 and, for example, a two-contact push button switch is used as the open / close sensor 51. Therefore, in the control example 2, the switch of the open / close sensor 51 also serves as the control unit 50. The single-phase AC motor M (AC) can change the rotation speed of the motor 21 by supplying electric power to wirings having different numbers of windings of the motor coil.

In this control example 2, the motor wiring Lo for setting the first air volume and the motor wiring Mi for setting the second air volume are used.

The two-contact push button switch as the open / close sensor 51 is provided at a position sandwiched between the lower end of the door 14 and the gantry 11. When the door 14 is closed, the button of the push button switch is pressed and the wiring Lo side is turned on. On the other hand, when the door 14 is opened, the wiring Mi side is turned on.

Further, indicator lamps 18a and 18b are connected to the respective wirings Lo and Mi, respectively. The indicator lamps 18a and 18b are lamps of different colors. Instead of the indicator lamp, a display panel for displaying the air volume "standard", the air volume "strong", etc. may be provided, and the display may be switched according to the operation of each switch.

In this control example 2, the motor 21 operates at the first air volume even when the door 14 is closed. Then, when the switch is switched, the second air volume with a large air volume is reached. Therefore, the air in the cooking room 12 is exhausted even when the door 14 is closed. Then, after the door 14 starts to open, the motor 21 accelerates to the second air volume so that the air volume is adjusted to the air volume when the door is fully opened.

The difference between the first air volume and the second air volume is, for example, that the first air volume is about 1 to 60% when the second air volume is 100%. This is because when the ratio of the first air volume to the second air volume exceeds 60%, the difference is close and the energy saving effect is small. On the other hand, if the first air volume is set to 1% or less, the inside of the cooking chamber 12 cannot always have a negative pressure with the door 14 closed.

As described above, in the control example 2, since the air in the cooking chamber 12 is always exhausted with a small air volume, odor leakage does not occur even at the moment when the door 14 starts to open. On the other hand, since the first air volume is the motor rotation at a lower speed than the second air volume, the power consumption can be reduced accordingly.

Further, in the control example 2, since the pressure inside the cooking chamber 12 is negative even when the door is closed, it is possible to prevent odor leakage even if there is no packing 16 and a slight gap is created when the door 14 is closed. can.

(Control example 3)
Control example 3 is a control example using the fully open sensor 52 of the door 14, in which the blower 20 is stopped when the door 14 is closed, and the blower 20 is operated at the third air volume from the start of the door 14 to the fully open state. This is a control example of operating with the second air volume after the full opening. Here, the second air volume <third air volume, and the second air volume is the air volume at which the wind speed at the opening portion of the door 14 becomes 0.2 m / s or more when the door 14 is fully opened.

FIG. 8 is a circuit diagram for carrying out the control of the control example 3.

Control example 3 has a simple configuration in which a single-phase AC motor M (AC) is used as the motor 21 of the blower 20, and for example, a b-contact push button switch is used as the open / close sensor 51, and a two-contact switch is used for the fully open sensor 52. be. Therefore, in the control example 3, the switch of the open / close sensor 51 and the fully open sensor 52 also serves as the control unit 50. The single-phase AC motor M (AC) can change the rotation speed of the motor 21 by supplying electric power to wirings having different numbers of windings of the motor coil.

In this control example 3, the motor wiring Mi for setting the second air volume and the motor wiring Hi for setting the third air volume are used. The difference between the second air volume and the third air volume may be, for example, about 120 to 160% when the second air volume is 100% and the third air volume is about 120 to 160%. The third air volume may be larger than when the door is fully opened, but if it is less than 120%, there is no significant change in the air volume actually sucked even if the air volume is increased, which is meaningless. On the other hand, if the air volume is increased to exceed 160%, the amount of air sucked in increases, but even if the air volume is lower than that, the air can be sufficiently sucked, so that the power consumption increases, which is excessive.

The b-contact push button switch as the open / close sensor 51 is provided at a position sandwiched between the lower end of the door 14 and the gantry 11. When the door 14 is opened even a little and the lower end thereof is separated from the gantry 11, the button of the push button switch is restored and turned on. At this time, the two-contact switch of the fully open sensor 52 is switched to the wiring Hi side. Therefore, when the switch of the open / close sensor 51 is turned on, electricity flows to the wiring Hi side of the motor 21 to start the motor 21, and at the same time, the third air volume is controlled.

After that, when the door 14 is fully opened, the switch of the fully open sensor 52 is switched to the wiring Mi side. At this time, the switch of the open / close sensor 51 remains on. As a result, after the door is fully opened, electricity flows to the wiring Mi side of the motor 21 and is controlled to be the second air volume.

Further, indicator lamps 18b and 18c are connected to the respective wirings Mi and Hi, respectively. The indicator lamps 18b and 18c are lamps of different colors. Instead of the indicator lamp, a display panel for displaying the air volume "standard", the air volume "strong", etc. may be provided, and the display may be switched according to the operation of each switch.

In this control example 3, the motor 21 is stopped when the door 14 is closed. Therefore, there is a possibility that an odor accumulates inside the cooking room 12. When the door 14 starts to open, the odor inside the cooking room 12 is exhausted at once with the third air volume to prevent the odor from leaking. Even if the second air volume is set after the door 14 is fully opened, most of the odor inside the cooking room 12 is exhausted, so that there is no odor leakage.

In Control Example 3, as in Control Example 2, the door 14 may be closed and the first air volume smaller than the second air volume may be used for constant exhaust. In this case, the wiring Lo of the motor 21 is used. The ratio of the first air volume, the second air volume, and the third air volume may be, for example, 10 to 30% for the first air volume and 50 to 60% for the second air volume, where the third air volume is 100%.

In the above control examples 1 to 3, software control may be performed using, for example, a DC motor, a converter, and a control computer (CPU (Central Processing Unit) or MPU (Micro Processor Unit)) instead of the AC motor. By using a DC motor, power consumption can be further reduced.

Further, although not shown, an opening degree sensor for detecting how much the door 14 is opened may be provided to change the air volume of the blower 20 according to the opening degree of the door 14. In that case, when the air volume of the blower 20 is changed stepwise, for example, a current is passed through the motor wirings Lo, Mi, and Hi each time the opening of the door 14 is stepwise increased. When the air volume of the blower 20 is continuously changed with respect to the opening of the door 14, for example, the voltage is changed from the converter according to the opening degree of the door 14 and supplied to the DC motor.

[Embodiment 2]
In the second embodiment, although the door 14 is manually opened and closed, a lock portion for locking the door 14 is provided to limit the opening and closing of the door 14, and then the blower 20 is operated according to the opened / closed state of the door 14. Control.

<Exhaust device for cooking utensils>
9 is a front view of the cooking utensil exhaust device of the second embodiment, and FIG. 10 is a cross-sectional view of the cooking utensil exhaust device of the second embodiment.

The cooking utensil exhaust device 102 of the second embodiment is provided with a lock portion 55 that keeps the door 14 closed and an open button 17 that gives an instruction to open the door 14. Other configurations are the same as those of the first embodiment, and the installation example in the case of indoor circulation or outdoor exhaust is also the same as that of the first embodiment, so the description thereof will be omitted. Moreover, since the cooking method is the same as that of the first embodiment, the description thereof will be omitted.

In the second embodiment, when the door 14 to be manually opened by providing the lock portion 55 is commanded to be opened from the open button 17, the control unit 50 controls the door 14 to satisfy a predetermined condition. Only open. The lock portion 55 has, for example, a structure in which a bar is inserted into a hole (including a recess) provided in the door 14 when the door 14 is closed. The latch is operated by, for example, an electromagnetic solenoid, and the electromagnetic solenoid is operated by a command from the control unit 50. The form of the lock portion 55 is not limited to the form using such a bar or an electromagnetic solenoid.

The open button 17 is, for example, a push button switch, a touch sensor switch, or the like, and is provided on the front panel 13a. The door 14 is opened and closed manually. Therefore, the open button 17 is, in other words, a switch that asks the control unit 50 for permission to open the door 14.

Further, indicator lamps 19a and 19b are provided on the front panel 13a to indicate whether the door 14 can be opened and closed. For example, the indicator lamp 19a indicates that the door 14 can be opened when it is lit in blue, and the indicator lamp 19b indicates that the door 14 cannot be opened when it is lit in red. Instead of the indicator lamp, a display panel may be provided to indicate "permitted" or "impossible" to open the door 14.

<Control example>
(Control example 4)
In the control example of the second embodiment (referred to as control example 4), the blower 20 is started at the same time as the opening instruction is given from the open button 17, and after a certain period of time, the lock is unlocked so that the door 14 can be opened. ..

FIG. 11 is a circuit diagram for carrying out the control of the control example 4.

In control example 4, a single-phase AC motor M (AC) is used as the motor 21 of the blower 20. The open button 17 and the switch of the open / close sensor 51 are interlocked with each other, and are provided on the wiring Mi from the alternating current power supply (AC) to the motor 21. The switch of the open button 17 and the open / close sensor 51 are both turned on by receiving an open instruction from the open button 17. On the other hand, when the open / close sensor 51 is turned from on to off, the open button 17 is also turned off.

Further, the wiring branched from this wiring Mi enters the timer (TM) 57, and is further connected to the electromagnetic solenoid 58 of the lock portion 55. The output from the timer 57 is also connected to the indicator lamp 19a.

Here, the timer 57 is set to time the time for a certain period of time in advance when the electric power is supplied, and after a certain period of time elapses, the timer 57 supplies the electric power to the electromagnetic solenoid 58. The timer 57 is not limited to measuring time, and may be a current delay circuit. The time set in the timer 57 is set to such a time that the blower 20 can be activated and the odor in the cooking chamber 12 can be exhausted. For this, it is preferable that the time is such that the air corresponding to the volume in the cooking chamber 12 can be exhausted. Specifically, although it depends on the volume in the cooking room 12 and the performance of the blower 20, 1 to 60 seconds is sufficient.

The electromagnetic solenoid 58 is, for example, an AC type electromagnetic solenoid 58, which is a normally open spring return type (the valve body is separated when the current is cut off (here, the lock portion 55 is locked), and the current is locked. The valve body closes when the current flows (here, the bar of the lock portion 55 retracts and unlocks).

In control example 4, the open / close sensor 51 and the timer 57 serve as the control unit 50.

In this control example 4, both the open button 17 and the open / close sensor 51 are in the off state when the door 14 is closed (the state shown in the figure). In this state, when the open button 17 is pressed and an open instruction is given, the switches of the open button 17 and the open / close sensor 51 are both turned on, and the motor 21 operates. The air volume at this time is the second air volume described in the first embodiment (the wind speed is 0.2 m / s or more when fully opened). At the same time, a current flows through the timer 57 to measure the time for a certain period of time. After time counting for a certain period of time, a current flows from the timer 57 to the electromagnetic solenoid 58 to unlock the lock portion 55. At the same time, the indicator lamp 19a is energized and turned on, and the door opening is permitted.

After that, the door 14 is manually opened. Even after the door 14 is opened, the exhaust is continued by the second air volume.

When the open door 14 is closed, when the door 14 is closed and the switch of the open / close sensor 51 is turned off, the open button 17 linked to the open / close sensor 51 is also turned off. As a result, the energization of the electromagnetic solenoid 58 is also cut off, so that the bar is restored by the spring and the door 14 is locked by the lock portion 55. At the same time, the electric power to the motor 21 is cut off, so the blower 20 is stopped. Further, the indicator lamp 19b is energized and turned on to indicate that the door 14 has been locked.

As described above, according to the control example 4, in order to open the door 14, the inside of the cooking chamber 12 is exhausted by first pressing the open button 17. At this time, since the lock portion 55 is not unlocked, the door 14 cannot be opened. Then, after the inside of the cooking room 12 is exhausted, the door 14 can be opened. Therefore, at the time when the door 14 is actually opened, most of the odor in the cooking room 12 is exhausted, so that the odor does not leak when the door 14 is opened. On the other hand, when the door 14 is closed, the blower 20 is stopped. Therefore, when the door 14 is closed, the blower 20 does not consume power.

In Control Example 4, instead of the AC motor, for example, software control using a DC motor, a converter, and a control computer (CPU or MPU) may be used. By using a DC motor, power consumption can be further reduced.

Further, in the second embodiment, in addition to the control example 4, the control example 2 of the first embodiment may be combined so that the exhaust is always continued at the first air volume when the door is closed. Further, in combination with the control example 3, exhaust is performed with the third air volume from the instruction to open the door to the unlocking of the lock portion 55, and after the lock portion 55 is unlocked (or the open / close sensor 51). After detecting that the door 14 has been opened), the second air volume may be controlled.

Further, in the second embodiment, the inside of the cooking chamber 12 is exhausted between the time when the instruction to open the door is given and the time when the lock portion 55 is unlocked. Therefore, when the door 14 can be opened, the odor is almost eliminated from the inside of the cooking room 12 depending on the ingredients and the cooking contents. Assuming such a case, for example, the control is performed for a longer period of time from the instruction to open the door to the unlocking of the lock portion 55 with the third air volume (or the second air volume than the third air volume). Etc.), and after a predetermined time has elapsed, the lock portion 55 is unlocked and the blower 20 is stopped. At this time, even if the door 14 is open, the blower 20 is stopped, but as described above, depending on the ingredients and cooking contents, the odor is almost eliminated from the inside of the cooking room 12, so that the odor hardly drifts. .. As a result, power consumption can be further reduced.

[Embodiment 3]
In the third embodiment, as in the second embodiment, the door 14 is manually opened and closed, but the door 14 is opened and closed by providing the lock portion 55 for locking the door 14 to limit the opening and closing of the door 14. Correspondingly, the operation of the blower 20 is controlled.

<Exhaust device for cooking utensils>
FIG. 12 is a cross-sectional view of the exhaust device for cooking utensils according to the third embodiment.

The cooking utensil exhaust device 103 of the third embodiment is provided with a cooking room state detection sensor (hereinafter referred to as a state sensor 61) for detecting the state in the cooking room 12 inside the cooking room 12. Other configurations are the same as those of the second embodiment, and the installation example in the case of indoor circulation or outdoor exhaust is also the same as that of the first embodiment, so the description thereof will be omitted. Moreover, since the cooking method is the same as that of the first embodiment, the description thereof will be omitted.

The state sensor 61 determines at least one of the odor in the cooking room 12, the temperature in the cooking room 12, the oil content in the air, the smoke, and the pressure in the cooking room 12 as the state in the cooking room 12. To detect.

Then, in the third embodiment, when the detection value detected by the state sensor 61 becomes equal to or less than a predetermined reference value, the control unit 50 unlocks the lock unit 55.

Odor is detected by a so-called odor sensor. As the odor sensor, various types such as a semiconductor type, a crystal oscillator type, a FET biosensor, and a film type surface stress sensor are commercially available, and they may be used. The control unit 50 unlocks the lock unit 55 when the odor becomes equal to or less than the reference value as compared with the value of the odor sensor and the reference value.

The temperature is detected by a temperature sensor. A well-known (commercially available) temperature sensor such as an analog type or a digital type may be used. The control unit 50 unlocks the lock unit 55 when the temperature becomes equal to or less than the reference value as compared with the value of the temperature sensor and the reference value. This is because when the blower 20 is operated, the temperature inside the cooking chamber 12 drops, and the lock portion 55 is unlocked assuming that the odor in the cooking chamber 12 is exhausted with that as a guide.

The oil content in the air detects, for example, a component of oil contained in the air, which is called an oil mist. This is because when the blower 20 is operated, the oil content in the air in the cooking chamber 12 is also exhausted, so that the oil content is reduced and the lock portion 55 is unlocked assuming that the odor has disappeared.

Smoke is detected by a smoke sensor. A commercially available smoke sensor such as an optical sensor may be used. This is because when the blower 20 is operated, the smoke in the cooking chamber 12 is also exhausted, so that the lock portion 55 is unlocked assuming that the odor has disappeared due to the decrease in smoke.

The pressure is detected by a pressure sensor. As the pressure sensor, a commercially available one such as an optical type may be used. This is because when the blower 20 is operated with the door 14 closed, the pressure in the cooking chamber 12 decreases. When the pressure becomes equal to or less than the reference value, the lock portion 55 is unlocked assuming that the odor is also exhausted. The reference value of the pressure may be set to a low value in the normal atmospheric pressure, for example, a pressure sensor for separately measuring the pressure outside the cooking chamber 12 may be provided, or the pressure inside or outside the cooking chamber 12 may be provided. The lock unit 55 is compared with the pressure inside and outside the cooking chamber by providing a sensor for detecting the difference, and when the pressure inside the cooking chamber 12 drops (or when the pressure difference exceeds a certain ratio). May be unlocked.

<Control example>
(Control example 5)
In the control example of the third embodiment (referred to as control example 5), the blower 20 is started at the same time as the opening instruction is given from the open button 17, and after a certain period of time, the lock is unlocked so that the door 14 can be opened. ..

FIG. 13 is a block diagram for explaining the control of the control example 5.

In control example 5, a signal from the state sensor 61 enters the control IC 62, and the value detected by the state sensor (Sen) 61 by the control IC 62 is compared with a predetermined reference value. When the detected value becomes equal to or less than the reference value, the control IC 62 causes a current to flow to the electromagnetic solenoid 58. The control IC 62 compares, for example, with the reference voltage in the case of the voltage from the state sensor 61. In the case of current, compare with the reference current. In the case of a digital signal, a DSP (Digital Signal Processor) is used as the control IC 62, and the digital values are compared. Although not shown, the control IC 62 and the state sensor 61 use electric power converted from alternating current to direct current. Since other circuit configurations are the same as those in Control Example 4, the description thereof will be omitted.

In control example 5, the control IC 62 becomes the control unit 50.

In this control example 5, the open button 17 and the open / close sensor 51 are both turned off when the door 14 is closed (shown in the figure). In this state, when the open button 17 is pressed and an open instruction is given, the switches of the open button 17 and the open / close sensor 51 are both turned on, and the motor 21 operates. The air volume at this time is the second air volume described in the first embodiment (the wind speed is 0.2 m / s or more when fully opened).

After that, the control IC 62 compares the detected value with the reference value, and if it becomes equal to or less than the reference value, a current is passed through the electromagnetic solenoid 58. A current flows through the electromagnetic solenoid 58 to unlock the lock portion 55. At the same time, the indicator lamp 19a is energized and turned on, and the door opening is permitted.

After that, the door 14 is manually opened. Even after the door 14 is opened, the exhaust is continued by the second air volume.

When the open door 14 is closed, when the door 14 is closed and the switch of the open / close sensor 51 is turned off, the open button 17 linked to the open / close sensor 51 is also turned off. As a result, the energization of the electromagnetic solenoid 58 is also cut off, so that the bar is restored by the spring and the door 14 is locked by the lock portion 55. At the same time, the electric power to the motor 21 is cut off, so the blower 20 is stopped. Further, the indicator lamp 19b is energized and turned on to indicate that the door 14 has been locked.

As described above, according to the control example 5, in order to open the door 14, the inside of the cooking chamber 12 is exhausted by first pressing the open button 17. Then, after it is confirmed by the state sensor 61 that the inside of the cooking room 12 is surely exhausted, the door 14 can be opened. Therefore, at the time when the door 14 is actually opened, most of the odor in the cooking room 12 is exhausted, so that the odor does not leak when the door 14 is opened. On the other hand, when the door 14 is closed, the blower 20 is stopped. Therefore, when the door 14 is closed, the blower 20 does not consume power.

In Control Example 5, instead of the AC motor, for example, software control using a DC motor, a converter, and a control computer (CPU or MPU) may be used. By using a DC motor, power consumption can be further reduced.

Further, in the fifth embodiment, in addition to the control example 5, the control example 2 of the first embodiment may be combined so that the exhaust is always continued at the first air volume when the door is closed. Further, in combination with the control example 3, exhaust is performed with the third air volume from the instruction to open the door to the unlocking of the lock portion 55, and after the lock portion 55 is unlocked (or the open / close sensor 51). After detecting that the door 14 has been opened), the second air volume may be controlled.

Further, in the third embodiment, the inside of the cooking chamber 12 is monitored by the state sensor 61 from the time when the instruction to open the door is given until the lock portion 55 is unlocked so that there is no (or little) odor. After confirmation, the lock portion 55 is unlocked. Therefore, also in the third embodiment, depending on the ingredients and cooking contents, the third air volume (or the second air volume from the third air volume) between the time when the door opening instruction is given and the time when the lock portion 55 is unlocked. If the odor disappears after exhausting the gas for a long time, the blower 20 may be stopped at the same time as the lock portion 55 is unlocked. As described above, depending on the ingredients and cooking contents, the odor is almost eliminated from the inside of the cooking room 12, so that the odor hardly drifts. As a result, power consumption can be further reduced.

[Embodiment 4]
In the fourth embodiment, the door 14 is opened and closed fully automatically, and the operation of the blower 20 is controlled according to the opened / closed state of the door 14.

<Exhaust device for cooking utensils>
FIG. 14 is a front view of the exhaust device for cooking utensils of the fourth embodiment. FIG. 15 is a cross-sectional view of the exhaust device for cooking utensils of the fourth embodiment.

The cooking utensil exhaust device 104 of the fourth embodiment has an opening / closing power unit 70 for opening / closing the door. Further, it has an open button 17a and a close button 17b for issuing an instruction to open / close the door. Other configurations are the same as those in the third embodiment. However, in the fourth embodiment, the lock portion 55 is unnecessary. Further, since the installation example in the case of indoor circulation or outdoor exhaust is the same as that of the first embodiment, the description thereof will be omitted. Moreover, since the cooking method is the same as that of the first embodiment, the description thereof will be omitted.

The open / close sensor 51 and the fully open sensor 52 may or may not be present. If there is an open / close sensor 51 and a fully open sensor 52, the open / closed state and fully open of the door 14 are detected by signals from them. If they are not present, the opening / closing motor is automatically stopped when the load applied to the opening / closing power unit 70 (specifically, the opening / closing motor) becomes high. The figure shows a configuration in which the open / close sensor 51 and the fully open sensor 52 are not provided.

The opening / closing power unit 70 is shown in a rack and pinion manner when shown in the figure. A rack gear 72, a pinion gear 73 that meshes with the rack gear 72, and an opening / closing motor 74 are arranged on the inside and both sides of the door 14. The opening / closing motor 74 is driven by the control from the control unit 50 to open / close the door 14. The opening / closing power unit 70 is not limited to this, and various methods such as chain winding and ball screw can be adopted.

Further, an indicator lamp 18 indicating an operating state of the blower 20 is provided. The indicator lamp 18 is lit to indicate that the blower is operating, and the indicator lamp 18 is off to indicate that the blower is stopped.

<Control example>
(Control example 6)
In the control example of the fourth embodiment (referred to as control example 6), the door 14 is opened by the open instruction from the open button 17a, and the door 14 is closed by the close instruction from the close button 17b. During that time, it controls the operation of the blower.

FIG. 16 is a block diagram for explaining the control system of the control example 6.

In control example 6, a direct current (DC) motor is used for the motor 21 of the blower 20. The control unit 50 controls the DC motor according to the open / closed state of the door 14. The control unit 50 includes a converter 701 that supplies a DC voltage to the DC motor, and a control computer 702 that controls the output voltage of the converter 701 as well as opening and closing the door 14.

The converter 701 converts alternating current (AC) from an alternating current power source into direct current (DC). The converter 701 changes the output voltage (DC) steplessly or stepwise according to a command from the control computer 702. The rotation speed of the DC motor changes according to the supplied DC voltage.

The control computer 702 is, for example, a small computer, and is a computer for device control, which is called a so-called microcomputer (abbreviated as a microcomputer or the like). Such a control computer 702 has a CPU 711, a ROM 712 that stores a program executed by the CPU 711, and a RAM 713 that serves as a work area of the CPU 711. It is equipped with a non-volatile memory 714 (for example, EPROM, flash memory, etc.) that stores programs and parameters (for example, reference values, predetermined times), and is equivalent in configuration to a general-purpose computer.

The control computer 702 is connected to an open button 17a, a close button 17b, and an open / close operation unit. According to an instruction from the open button 17a or the close button 17b, the door 14 is opened and closed, and the rotation speed of the motor 21 is controlled. Further, an indicator lamp 18 is connected to the control computer 702, and the indicator lamp 18 is turned on at the same time when the control computer 702 operates the blower 20. The indicator lamp 18 may be connected to the wiring of the motor 21 and may be turned on when a current flows through the motor 21.

FIG. 17 is a flowchart showing the control procedure of the control example 6.

The CPU 711 controls the operation of the blower 20 as well as the opening / closing operation of the door 14 by executing the program created based on this procedure.

Prior to the explanation of the control procedure, the air volume will be explained. In control example 6, the first air volume <second air volume <third air volume. For example, when the third air volume is 100%, the ratio of each air volume is 10 to 30% for the first air volume and 30 to 60% for the second air volume. The air volume when the door is fully opened is set as the second air volume, and the wind speed at the opened portion is set to 0.2 m / s or more.

The control procedure will be described.

The CPU 711 is waiting for input of the open button 17a until the open button 17a is pressed while the door 14 is closed (S11).

When the open button 17a is pressed and there is an input (S11: YES), the CPU 711 instructs the converter 701 to output a voltage as a third air volume (S12). When the door 14 is closed, the motor 21 is stopped (or may be operated with the first air volume). Here, the motor 21 of the blower 20 is activated by the voltage from the converter 701, and the blower 20 operates at the third air volume. In S12, the indicator lamp 18 is turned on at the same time (when the door is closed and the first air volume is set, the lighting is continued).

Subsequently, the CPU 711 starts timing with a command to the converter 701 (S13). The CPU 711 determines whether or not a predetermined time has elapsed (S14). Here, the predetermined time is set to such a time that the blower 20 can be activated and the odor in the cooking chamber 12 can be exhausted. For this, it is preferable that the time is such that the air corresponding to the volume in the cooking chamber 12 can be exhausted.

Subsequently, when the predetermined time has elapsed (S14: YES), the CPU 711 instructs the converter 701 to output a voltage to be the second air volume (S15). The motor 21 of the blower 20 is decelerated by the voltage from the converter 701, and the blower 20 operates at the second air volume.

Subsequently, the CPU 711 instructs the opening / closing power unit 70 to open the door 14 (S16). By this command, the opening / closing motor 74 rotates in the direction of opening the door 14. When the door 14 is fully opened, the opening / closing motor 74 automatically stops.

Subsequently, the CPU 711 waits for the input of the close button 17b (S17). Here (in the state where the door 14 is open), when the close button 17b is pressed and there is an input (S17: YES), the CPU 711 instructs the opening / closing power unit 70 to close the door 14 (S18). By this command, the opening / closing motor 74 rotates in the direction of closing the door 14. When the door 14 is fully closed, the opening / closing motor 74 automatically stops.

Subsequently, the CPU 711 commands the converter 701 to stop the voltage output (or output a voltage that becomes the first air volume) (S19). When the voltage output from the converter 701 is stopped, the motor 21 of the blower 20 is stopped, and the blower 20 is stopped (or decelerated to operate at the first air volume). After that, the process returns to S11.

As described above, according to the control example 6, the inside of the cooking chamber 12 is exhausted by pressing the open button 17a in order to open the door 14. After that, when the predetermined time has elapsed, the door 14 is automatically opened. Therefore, when the door 14 is opened, most of the odor in the cooking room 12 is exhausted, so that the odor does not leak. On the other hand, when the close button is pressed, the door 14 is automatically closed and the blower 20 is stopped (or the first air volume is reached). Therefore, when the door 14 is closed, the blower 20 does not consume power.

Also in the control example 6, the air volume after the input of the open button 17a may be the second air volume. Further, the control may be performed by using an AC motor.

Further, in the control example 6, since the DC motor is controlled by the control computer 702, for example, it is steplessly determined according to the opening amount of the door 14 (the rotation amount of the opening / closing power unit 70 or the opening / closing motor 74). The rotation speed of the DC motor may be changed. As a result, the wind speed at the opened portion can be kept substantially constant regardless of the opening degree of the door 14.

The fourth embodiment is provided with an opening / closing power unit 70 that opens / closes the door 14. Therefore, in the fourth embodiment, if the door 14 is open when the fire alarm 41 issues a warning, the control unit 50 receives the notification and commands the opening / closing power unit 70 to close the door 14. .. As a result, when a fire breaks out, it is possible to prevent flames and smoke from being emitted from the open portion of the door.

[Embodiment 5]
In the fifth embodiment, the door 14 is opened and closed fully automatically, and the operation of the blower 20 is controlled according to the open / closed state of the door 14 and the state in the cooking room 12 detected by the state sensor 61.

<Exhaust device for cooking utensils>
The configuration of the exhaust device for cooking utensils of the fifth embodiment is the same as that of the fourth embodiment except that the state sensor 61 similar to that of the third embodiment is provided (see FIG. 12, but the lock portion is not provided). Since the state sensor 61 has the same configuration as that of the third embodiment, and other configurations, installation examples, and cooking methods are the same as those of the first embodiment, the description thereof will be omitted.

<Control example>
(Control example 7)
In the control example of the fifth embodiment (referred to as control example 7), the door 14 is opened by the open instruction from the open button 17a, and the door 14 is closed by the close instruction from the close button 17b. During that time, it controls the operation of the blower.

FIG. 18 is a block diagram for explaining the control system of the control example 7. The control system of the fifth embodiment is configured to receive the input from the state sensor 61 to the control system of the fourth embodiment, and the other configurations are the same, so the description thereof will be omitted.

FIG. 19 is a flowchart showing a control procedure. The CPU 711 controls the operation of the blower 20 as well as the opening / closing operation of the door 14 by executing the program created based on this procedure.

The air volume is the same as in Control Example 6. Further, since a part of the control procedure is the same as that of the control example 6, the same step number (S number) is assigned to simplify or omit the description.

The control procedure will be described.

When there is an open button input (S11: YES), the CPU 711 commands the converter 701 to output a voltage as a third air volume (S12).

Subsequently, the CPU 711 compares the value detected from the state sensor 61 with the reference value (S24). The reference value is stored in the non-volatile memory 714.

The reference value used here may be one predetermined reference value as in the third embodiment, but may also be a value according to changes in the environment. For example, the value of the state sensor 61 before the start of cooking is stored as a reference value, and after cooking, the value of the state sensor 61 and the stored reference value (value before the start of cooking) are compared in S24. It is. For example, since the temperature, pressure, and the like differ depending on the weather of the day, the state inside the cooking room 12 can be accurately determined accordingly.

Then, when the detected value becomes equal to or less than the reference value (S24: YES), the CPU 711 instructs the converter 701 to output a voltage to be the second air volume (S15).

Subsequently, the CPU 711 instructs the opening / closing power unit 70 to open the door 14 (S16), and waits for the input of the closing button 17b (S17).

After that, when there is an input from the close button 17b (S17: YES), the CPU 711 instructs the opening / closing power unit 70 to close the door 14 (S18), and stops the voltage output to the converter 701 (or becomes the first air volume). Output voltage) (S19). After that, it returns to S11.

As described above, according to the control example 7, the inside of the cooking chamber 12 is exhausted by pressing the open button 17a in order to open the door 14. After that, if it is determined by the state sensor 61 that the odor in the cooking room 12 has disappeared, the door 14 is opened, so that the odor does not leak. On the other hand, if the close button is pressed, the door 14 is automatically closed and the blower 20 is stopped. Therefore, when the door 14 is closed, the blower 20 does not consume power.

Also in the control example 7, for example, the rotation speed of the DC motor may be changed steplessly according to the opening amount of the door 14. As a result, the wind speed at the opened portion can be kept substantially constant regardless of the opening degree of the door 14. Further, the control may be performed by using an AC motor.

[Embodiment 6]
The sixth embodiment is a form in which the shutter 25 is provided on the upstream side of the blower 20 in the blowing direction.

<Exhaust device for cooking utensils>
FIG. 20 is a cross-sectional view of the exhaust device for cooking utensils according to the sixth embodiment.

The cooking utensil exhaust device 106 of the sixth embodiment is provided with an intake side shutter 80 that opens and closes at an intake port (opening portion of a grease filter) on the upstream side (that is, the intake side) of the blower 20 in the air blowing direction. The intake side shutter 80 closes the exhaust side in the cooking chamber 12.

Other configurations may be any of embodiments 1-5. Further, the control of the blower 20 accompanying the opening and closing of the door 14 is also one of the control examples described in the first to fifth embodiments. Therefore, the description of the device configuration other than the intake side shutter, the installation example, and the control will be omitted.

The intake side shutter 80 is electrically operated and opens and closes in conjunction with the operation of the blower 20. The opening and closing of the intake side shutter may be controlled by the control unit 50, or the wiring for supplying electric power to the blower 20 may be connected to the drive source (not shown) of the intake side shutter 80 to supply electric power to the blower 20. The intake side shutter 80 may be opened when electricity flows through the wiring for supplying electric power, and the intake side shutter 80 may be closed when electricity for the wiring for supplying electric power to the blower 20 does not flow.

Further, the intake side shutter 80 is linked with the fire alarm 41 so as to close when the fire alarm 41 issues a report. If the intake side shutter 80 is open when the fire alarm 41 gives an alarm, the control unit 50 receives the alarm and commands the intake side shutter 80 to be closed. This makes it possible to prevent or suppress flames and smoke from coming out through the exhaust duct in the event of a fire. In this case, it is preferable to provide a backup battery or the like so that the closing operation can be performed only in case the power of the entire device is cut off due to a fire.

The cooking utensil exhaust device 106 of the sixth embodiment is provided with the intake side shutter 80, so that it is possible to prevent oil smoke and the like from entering the blower housing while the blower 20 is stopped. Therefore, it is possible to suppress the adhesion and accumulation of dirt on the blower 20 which may cause an odor.

[Embodiment 7]
The seventh embodiment is a form in which an inner panel having an opening communicating with the suction port of the blower 20 is provided in the cooking chamber 12.

<Exhaust device for cooking utensils>
FIG. 21 is a cross-sectional view of the exhaust device for cooking utensils according to the seventh embodiment.

The cooking utensil exhaust device 107 of the seventh embodiment is provided with an inner panel 90 having an opening communicating with the suction port of the blower 20 (the portion to which the grease filter 30 is attached) in the cooking chamber 12. Other configurations may be any of the first to sixth embodiments. Further, the control of the blower 20 accompanying the opening and closing of the door 14 is also one of the control examples described in the first to fifth embodiments. Therefore, the description of the device configuration other than the inner panel 90, the installation example, and the control will be omitted.

The inner panel 90 is provided so as to cover the ceiling portion in the cooking room 12 and the lower portion of the housing 35 of the blower 20. In particular, it is preferable to cover a cornered portion which is a joint portion between the ceiling and the lower part of the housing 35 and the side panel 13b and the back panel 13c. The inner panel 90 has a gently curved shape with no corners.

By providing the inner panel 90, oil smoke or the like generated in the cooking room 12 is prevented or suppressed from adhering to the ceiling portion or the lower part of the housing 35 due to the direct updraft. Since the inner panel 90 has a gently curved shape, it is easy to clean. Adhesion of dirt in the cooking chamber 12 may cause a foul odor. Therefore, if cleaning is facilitated, it becomes easier to remove the cause of the odor and further suppress the drift of the odor.

Further, in order to prevent the inside of the cooking chamber 12 from becoming dirty, it is preferable to apply oil-repellent coating to the inner wall of the cooking chamber 12, such as the inner surface panel 90, the side panel 13b, and the back panel 13c. By applying an oil-repellent coating to the inner wall of the cooking chamber 12, oil stains are reduced. Also in another embodiment in which the inner surface panel 90 is not provided, it is preferable to apply oil-repellent coating to the inner wall of the cooking room 12, such as the side panel 13b, the back panel 13c, and the surface of the ceiling plate 13d on the cooking room side.

[Embodiment 8]
The seventh embodiment is a form in which an inner surface panel 90 having an opening communicating with the suction port of the blower 20 is provided in the cooking chamber 12.

<Exhaust device for cooking utensils>
FIG. 22 is a cross-sectional view of the exhaust device for cooking utensils according to the eighth embodiment.

The cooking utensil exhaust device 108 of the eighth embodiment is provided with an oil removing device 801 in the cooking chamber 12. Other configurations may be any of the first to seventh embodiments. Further, the control of the blower 20 accompanying the opening and closing of the door 14 is also one of the control examples described in the first to fifth embodiments. Therefore, the description of the device configuration, the installation example, and the control other than the oil removing device 801 will be omitted.

The oil removing device 801 is provided under the ceiling plate 13d in the cooking room 12. An oil removing duct 802 communicating from the downstream side of the blower 20 and a vent 803 for switching the blowing path are provided in the ceiling portion.

The oil removing device 801 contains a disk-shaped filter having a vent hole that rotates inside and a motor that drives the filter (both not shown), and the lower portion thereof is open for air to pass through. The oil removing device 801 passes the rotating disk of air containing oil, so that oil adheres to the disk. The adhering oil hits the inner wall of the oil removing device 801 by centrifugal force and accumulates in an oil reservoir (not shown) provided along the inner wall. The oil reservoir is removable, and the accumulated oil is removed and discarded.

The oil removing duct 802 is a path that guides the exhaust gas from the blower 20 to the oil removing device 801. The vent 803 is an exhaust path switching machine, and guides the exhaust of the blower 20 to the exhaust port 23 (direction in which the exhaust duct 501 is connected) when the door 14 opens, and to the direction of the oil removing device 801 when the door 14 closes. The operation of the vent 803 may be operated in accordance with the opening and closing of the door 14 in the control example described in each embodiment.

In the case of the eighth embodiment, as a control example thereof, it is preferable to control the blower 20 so as to operate even when the door 14 is closed. By doing so, it is possible to remove oil that may cause an odor from the air in the cooking chamber 12.

When the oil removing device 801 is provided, a dedicated blower 20 is attached to the oil removing device 801 without using the exhaust gas of the blower 20, and the air in the cooking room 12 is always passed through the oil removing device 801 into the cooking room 12. It may be circulated with. In this case, a dedicated duct may be provided, or an oil removing device 801 with a dedicated blower may be provided in the cooking room 12 without providing the oil removing duct 802.

[Cooking method]
Next, a cooking method using the exhaust device for cooking utensils according to each of the above-described embodiments will be described.

First, the user opens the door 14 (presses the open button depending on the embodiment). As a result, the blower 20 operates according to each embodiment. When the door 14 is opened, the ingredients are set in the cooking utensil 200 in the cooking room 12. Then, the cooking time is set and the cooking start operation is performed for the cooking utensil 200.

After that, the user closes the door 14 (in some embodiments, the close button is pressed). As a result, the blower 20 is stopped or the first air volume is set as in each embodiment.

When the set cooking time has elapsed, the cooking utensil 200 sounds a chime, a buzzer, or a lamp or a display device to notify the end of cooking.

The user who recognizes these sounds and displays opens the door 14. As a result, the blower 20 operates according to each embodiment. The user who opens the door 14 takes out the cooked food and sets the next food if necessary.

According to such a cooking method, the blower 20 operates according to the control example described above according to the opening and closing of the door 14, so that the odor from the cooking room 12 during or after cooking drifts into the room. Can be prevented or suppressed.

(Collaboration with cooking utensils)
In relation to the cooking method, the blower 20 can be controlled in cooperation with the cooking utensil 200.

As described above, when cooking, the cooking time is set in the cooking utensil 200. For example, in an automatic fryer, it is the frying time. By communicating between the cooking utensil 200 and the control unit 50, even if the door 14 is closed when the cooking time elapses, if the blower 20 is stopped, the blower 20 is started and exhaust is started. Communication between the cooking utensil 200 and the control unit 50 may simply be a switch for activating the blower 20. When the blower 20 is controlled by the control computer 702, the cooking utensil 200 sends a timing end signal to the control computer 702 to start the blower 20 from the control computer 702.

Further, as another control example linked with the cooking utensil 200, when the control unit 50 receives the cooking time set in the cooking utensil 200, the control unit 50 clocks the time, and the set time elapses. Then, even if the door 14 is closed, if the blower 20 is stopped, the blower 20 may be started to start exhausting. Further, in this case, the blower 20 may be started earlier than the end time set in the cooking utensil 200.

By starting the blower 20 in cooperation with the cooking utensil 200 in this way, the blower 20 starts exhausting at the same time as the cooking is completed. Therefore, even if the door 14 is opened immediately after the cooking is completed, the door 14 is started from the end of cooking. Since the air in the cooking chamber 12 can be exhausted to some extent until the door is opened, odor leakage can be further reduced. Further, if the blower 20 is started earlier than the cooking end time, the air in the cooking chamber 12 can be exhausted at the end of cooking, so that the odor in the cooking chamber 12 disappears at the end of cooking. Therefore, the odor in the cooking room 12 does not leak when the door 14 is opened.

Although the embodiment to which the present invention is applied has been described above, the present invention is not limited to the above-described embodiment.

For example, when the door 14 is opened, a temporary stop portion for suspending the door 14 is provided until the door 14 is fully opened, and a predetermined pause time is set in the state where the door 14 is temporarily stopped. It is also possible to control the pause by the pause unit after the lapse of time. As a result, it is possible to easily take in air into the cooking room 12 by opening the door 14 a little. In this case, the pause may be canceled by the state sensor 61, determining that the odor has disappeared (or has decreased), instead of canceling the pause for a certain period of time. Here, the opening degree of the door 14 at the time of temporary stop is preferably 1 to 50%, for example, assuming that the door 14 is fully opened at 100%. If the opening at the time of temporary stop is less than 1%, the amount of air sucked in is too small to reduce the load. On the other hand, if it opens more than 50%, it is almost the same as fully open, so it is meaningless.

Further, the door 14 is not limited to the shape of a single plate, and may be, for example, a door 14 having a plurality of plate shapes, a take-up shutter, or the like. Further, it may be a horizontal slide instead of a vertical slide, and it can be made into various shapes and forms such as a double-sided slide as well as a single-sided slide.

In addition, the exhaust device for cooking utensils according to the present invention is often set in an indoor room, but even in the open air (for example, an outdoor exhibition hall), it is prevented from drifting around and saves energy. It can be used as an exhaust device for various cooking utensils.

In addition, the control examples described in each embodiment may be combined with each other instead of the control examples alone, or other control may be performed.

Further, the present invention can be implemented in various forms based on the technical ideas described in the claims, which are also within the scope of the present invention.

11 gantry,
12 cooking room,
13a front panel,
13b side panel,
13c back panel,
13d ceiling board,
14 doors,
15 handles,
16 packing,
17, 17a open button,
17b close button,
18, 18a, 18b, 18c, 19a, 19b indicator lamp,
20 blower,
21 motor,
22 Sirocco fan,
23 Exhaust port,
25 shutters,
30 grease filter,
31 air filter,
32 deodorizing filter,
33 Smoke removal filter,
34 Oil adsorption filter,
35 housing,
41 Fire alarm,
42 fire extinguisher,
50 Control unit,
51 Open / close sensor,
52 Fully open sensor,
55 lock part,
57 timer,
58 Electromagnetic solenoid,
61 status sensor,
62 Control IC,
70 Opening and closing power unit,
72 rack gear,
73 pinion gear,
74 Opening and closing motor,
80 Intake side shutter,
90 inner panel,
101, 102, 102, 103, 104, 106, 107, 108 Exhaust equipment for cooking utensils,
200 cookware,
501, 503 Exhaust duct,
701 converter,
702 Control computer,
711 CPU,
712 ROM,
713 RAM,
714 non-volatile memory,
801 Oil remover,
802 Oil removal duct,
803 vent.

Claims (29)

A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
Have,
The control unit
When the door is closed, the blower is stopped or controlled to be the first air volume.
From the time when the door starts to open until the door is fully opened, the blower is controlled so that the third air volume is larger than the first air volume.
An exhaust device for cooking utensils that controls the blower to have a second air volume that is larger than the first air volume and smaller than the third air volume after the door is fully opened. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
The open button that instructs to open the door and
It has a lock portion for locking and unlocking the door with the door closed.
The control unit is an exhaust device for cooking utensils that unlocks the lock unit after operating the blower for a certain period of time when receiving an instruction to open the door from the open button. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
The open button that instructs to open the door and
It has an opening / closing power unit that opens / closes the door.
The control unit is an exhaust device for cooking utensils that controls the opening / closing power unit so as to open the door after operating the blower for a certain period of time when receiving an instruction to open the door from the open button. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
The open button that instructs to open the door and
A lock portion that locks and unlocks the door with the door closed, and
It has a cooking room state detection sensor that detects the state of the cooking room, and has.
In the control unit, at least one of the detection values of the odor, temperature, oil in the air, smoke, and pressure detected by the cooking room state detection sensor is equal to or lower than a predetermined reference value. An exhaust device for cooking utensils that unlocks the lock portion in the case of a case. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
An open button indicating the opening of the door and an open button
The opening and closing power unit that opens and closes the door,
It has a cooking room state detection sensor that detects the state of the cooking room, and has.
In the control unit, at least one of the detection values of the odor, temperature, oil in the air, smoke, and pressure detected by the cooking room state detection sensor is equal to or lower than a predetermined reference value. In this case, an exhaust device for cooking utensils that controls the opening / closing power unit so as to open the door. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
It has a temporary stop portion for suspending the door from the start of opening to the full opening of the door.
The control unit is an exhaust device for cooking utensils that releases the pause by the pause unit after a predetermined pause time elapses after the door is stopped by the pause unit. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
A temporary stop unit that suspends the door from the start of opening to the full opening of the door,
It has a cooking room state detection sensor that detects the state of the cooking room, and has.
In the control unit, at least one of the detection values of the odor, temperature, oil in the air, smoke, and pressure detected by the cooking room state detection sensor is equal to or lower than a predetermined reference value. In the case, an exhaust device for cooking utensils that releases the pause by the pause portion. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
Have,
The cooking utensil housed in the cooking room can communicate with the control unit.
The control unit is an exhaust device for cooking utensils that receives a signal from the cooking utensil to end cooking and operates the blower when the blower is stopped. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
Have,
The cooking utensil housed in the cooking room can communicate with the control unit.
The control unit receives a signal from the cooking utensil indicating that a predetermined time has elapsed from the start of cooking, and operates the blower when the blower is stopped. The cooking utensil exhaust device. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
Have,
The control unit is an exhaust device for cooking utensils that operates the blower when the blower is stopped after a predetermined time has elapsed from the start of cooking. A kitchen that stores cooking utensils inside, and
The door provided in the cooking room and
A blower connected to an exhaust duct for exhausting air in the cooking room to the inside of the room where the cooking room is located or to the outside of the cooking room.
A control unit that changes the operation of the blower according to the open / closed state of the door, and
An oil removing device that removes oil from the air in the cooking room,
An exhaust device for cooking utensils, comprising an exhaust path switching machine that guides the exhaust of the blower toward the exhaust duct when the door is opened and toward the oil removing device when the door is closed. The control unit
When the door is closed, the blower is stopped or controlled to be the first air volume.
The exhaust device for cooking utensils according to any one of claims 2 to 11 , wherein after the door starts to open, the blower is controlled to have a second air volume having a larger air volume than the first air volume. The control unit
When the door is closed, the blower is stopped or controlled to be the first air volume.
From the time the door starts to open until the door is fully opened, the blower is set to one of the first air volume, the second air volume larger than the first air volume, and the third air volume larger than the second air volume. Control and
The exhaust device for cooking utensils according to any one of claims 2 to 11 , wherein the blower is controlled to have the second air volume after the door is fully opened. The control unit
When the door is closed, the blower is stopped or controlled to be the first air volume.
From the time when the door starts to open until the door is fully opened, the air volume of the blower is controlled to increase as the opening of the door increases.
The exhaust device for cooking utensils according to any one of claims 2 to 11 , wherein after the door is fully opened, the blower is controlled to have a second air volume larger than the first air volume. It has an open / close sensor that detects the open / closed state of the door.
The exhaust device for cooking utensils according to claim 12 , wherein the control unit starts to open the door when the signal from the open / close sensor changes from the closed door to the open door. An open / close sensor that detects the open / closed state of the door,
It has a fully open sensor that detects the fully open door, and
The control unit starts to open the door when the signal from the open / close sensor changes from closed to open, and receives a signal from the fully open sensor indicating that the door is fully open. The cooking utensil exhaust device according to claim 1 or 13 , which controls a blower. An open / close sensor and a fully open sensor that detect the open / closed state of the door and the fully open state of the door,
It has an opening sensor that detects the opening of the door.
The control unit starts to open the door when the signal from the open / close sensor changes from closed to open, receives a signal indicating the opening of the door from the opening sensor, and receives the signal indicating the opening of the door from the opening sensor. The exhaust device for cooking utensils according to claim 14 , which receives a signal indicating that the door is fully opened from the door and controls the blower. The exhaust device for cooking utensils according to any one of claims 1 to 17 , further comprising a deodorizing filter for deodorizing air on the upstream side or the downstream side of the blower. The cooking utensil according to any one of claims 1 to 18 , wherein the control unit controls the blower so that the wind speed flowing into the cooking chamber is 0.2 m / s or more when the door is fully opened. Exhaust device. The exhaust device for cooking utensils according to any one of claims 1 to 19 , further comprising a shutter that closes the exhaust side of the cooking chamber while the blower is stopped. The cooking utensil exhaust device according to any one of claims 1 to 20 , further comprising a fire alarm that monitors the cooking room and gives an alarm when a fire occurs. It has a fire alarm that monitors the cooking room and gives an alarm when a fire breaks out.
The cooking utensil exhaust device according to claim 3 or 5 , wherein the control unit closes the door when the fire alarm is issued, if the door is open. A fire alarm that monitors the cooking room and gives an alarm when a fire breaks out.
It has a shutter that closes the exhaust side of the cooking chamber.
The cooking utensil exhaust device according to any one of claims 1 to 19 , wherein the control unit closes the shutter when the fire alarm is issued. The cooking utensil exhaust device according to any one of claims 21 to 23 , which has a fire extinguisher that emits a fire extinguisher toward at least the cooking chamber when the fire alarm is issued. The cooking utensil exhaust device according to any one of claims 1 to 24 , wherein the cooking utensil is a fryer. The exhaust device for cooking utensils according to any one of claims 1 to 25 , wherein the inner wall of the cooking chamber is coated with oil-repellent coating. The cooking utensil exhaust device according to any one of claims 1 to 26 , wherein the cooking chamber has an inner panel having an opening communicating with the suction port of the blower. The exhaust device for cooking utensils according to any one of claims 1 to 10 and 12 to 27 , further comprising an oil removing device for removing oil from the air in the cooking chamber. The cooking method using the exhaust device for cooking utensils according to any one of claims 1 to 28 .
At the stage of opening the door and setting the ingredients in the cooking utensils in the cooking room,
The stage of closing the door and
After cooking, the stage of opening the door and
The cooking method.

Images