WO2015093106A1

WO2015093106A1 - Heating cooker

Info

Publication number: WO2015093106A1
Application number: PCT/JP2014/073361
Authority: WO
Inventors: 竜也峯岡; 卓士岸本; 智子延藤; 井上　博喜; 直紀杉村; 祥裕岡本; 真也工藤
Original assignee: シャープ株式会社
Priority date: 2013-12-17
Filing date: 2014-09-04
Publication date: 2015-06-25
Also published as: CN105492829B; JP2015117864A; JP5771674B2; CN105492829A

Abstract

This heating cooker is provided with: a heating chamber (13) for heating a subject to be heated; a circulation pathway for circulating a heating medium via the heating chamber (13); a circulation fan (18) that is disposed in the circulation pathway; and a mist supply apparatus (140) for supplying mist to the inside of the circulation pathway and to the downstream of the circulation fan (18). Consequently, the heating cooker capable of efficiently supplying the mist to the heating chamber with the simple configuration is provided.

Description

Cooker

The present invention relates to a cooking device, and more particularly to a cooking device that supplies mist into a heating chamber.

As a conventional cooking device, there is one that converts saturated steam generated by a steam generator into superheated steam by heating it with a heater for generating superheated steam and supplies it to a heating chamber (for example, JP2013-019594A). No. Publication (Patent Document 1)).

In the above-mentioned conventional cooking device, a heater for generating saturated steam and a heater for generating superheated steam are required for the steam generator, and the maximum power cannot be input simultaneously, and the total power of each heater becomes the maximum power. Alternatively, the maximum power is alternately supplied to each heater to generate superheated steam, which causes a problem that the generation efficiency of superheated steam is lowered.

Therefore, as a cooking device that can improve the efficiency of generating superheated steam, it is conceivable to supply mist generated by ultrasonic vibration of an ultrasonic unit in a water reservoir of a mist generator to a heating chamber (e.g. 2013-061098 (Patent Document 2)).

JP 2013-019594 A JP 2013-061098 A

However, the cooking device that supplies the mist generated by the ultrasonic vibration to the heating chamber is not configured to send the mist generated in the water reservoir of the mist generating device to the supply path. There was a problem that it could not be supplied efficiently.

Therefore, an object of the present invention is to provide a cooking device that can efficiently supply mist to a heating chamber with a simple configuration.

In order to solve the above problems, the heating cooker of the present invention is:
A heating chamber for heating an object to be heated;
A circulation path for circulating the heat medium through the heating chamber;
A circulation fan arranged in the circulation path;
And a mist supply device for supplying mist to the downstream side of the circulation fan in the circulation path.

Moreover, in the heating cooker of one embodiment,
The inlet of the mist supply device is provided at a position where the static pressure is higher than the circulation fan downstream of the circulation fan and the outlet side of the mist supply device.

Moreover, in the heating cooker of one embodiment,
The mist supply device has a water reservoir for storing water at a substantially constant water level, and an ultrasonic vibration unit for generating mist by applying ultrasonic vibration to the water accumulated in the water reservoir,
The inlet of the mist supply device is provided in the circulation path so that the heat medium flows along the surface of the water accumulated in the water reservoir of the mist supply device.

Moreover, in the heating cooker of one embodiment,
A suction port of the circulation path provided on the side wall of the heating chamber;
Provided on the side wall of the heating chamber and below the suction port of the circulation path, guides the mist supplied from the mist supply device when the circulation fan is stopped from the circulation path to the bottom of the heating chamber. A mist guide was provided.

Moreover, in the heating cooker of one embodiment,
A heater disposed in the circulation path was provided.

Moreover, in the heating cooker of one embodiment,
A hot water supply device for supplying hot water to the mist supply device was provided.

Moreover, in the heating cooker of one embodiment,
An ejector portion is provided on the outlet side of the mist supply device, and the mist in the mist supply device is sucked into the flow of the heat medium flowing in the circulation path by the circulation fan.

Moreover, in the heating cooker of one embodiment,
A microwave generator for supplying microwaves to the heating chamber;
When the object to be heated is heated by the microwave supplied from the microwave generator, the mist from the mist supply device is supplied into the heating chamber via the circulation path.

As apparent from the above, according to the present invention, a cooking device capable of efficiently supplying mist to the heating chamber with a simple configuration can be realized.

FIG. 1 is a front perspective view of a cooking device according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the cooking device. Drawing 3 is a mimetic diagram of the side of the above-mentioned cooking-by-heating machine. 4 is a longitudinal sectional view taken along line IV-IV in FIG. FIG. 5 is a longitudinal sectional view taken along line VV in FIG. FIG. 6 is a control block diagram of the cooking device. FIG. 7 is a control block diagram of the heating cooker according to the second embodiment of the present invention. FIG. 8 is a control block diagram of the heating cooker according to the third embodiment of the present invention. FIG. 9 is a control block diagram of the heating cooker according to the fourth embodiment of the present invention. FIG. 10 shows changes in the oxygen concentration in the heating chamber when the mist generated by ultrasonic vibration of the heating cooker of the present invention is changed to superheated steam, and heating when the saturated steam evaporated by heater heating is changed to superheated steam. It is a figure which shows the change of indoor oxygen concentration.

Hereinafter, the cooking device of the present invention will be described in detail with reference to the illustrated embodiments.

[First Embodiment]
FIG. 1: has shown the front perspective view of the heating cooker of 1st Embodiment of this invention.

In the cooking device of the first embodiment, as shown in FIG. 1, a door 2 is attached to the front of a rectangular parallelepiped casing 1 so as to rotate about the lower end side. A handle 3 is attached to the upper side of the door 2. Further, the heat-resistant glass 4 is attached to the door 2 on the side (front side) opposite to the heating chamber 13 (shown in FIG. 2). An operation panel 5 is provided on the right side of the door 2. The operation panel 5 includes a color liquid crystal display unit 6 and a button group 7. An exhaust duct 8 is provided on the upper side of the casing 1 and on the right rear side. Further, a dew receptacle 9 that can be attached to and detached from the front leg (not shown) of the casing 1 is disposed below the door 2.

FIG. 2 shows a schematic diagram of a longitudinal section of the cooking device.

As shown in FIG. 2, the heating cooker heats water supplied from the water supply tank 11 with a saturated steam generator 12 to generate saturated steam. The saturated water vapor generated by the saturated water vapor generator 12 passes through the steam supply passage (not shown) and the heating chamber 13 side of the steam inlet 15 of the circulation unit 14 attached to the right side surface of the heating chamber 13. To be supplied.

The steam supply pipe 34 connected to the steam supply passage is attached in the vicinity of the steam inlet 15 of the circulation unit 14 so as to be parallel to the right side surface of the heating chamber 13. A circulation fan 18 is disposed in the circulation unit 14 so as to face the vapor suction port 15. The circulation fan 18 is rotationally driven by a circulation fan motor 19.

Further, a steam duct 100 bent in an L shape is attached to the heating chamber 13 so as to cover the upper surface and the left side surface of the heating chamber 13. The steam duct 100 includes a first duct portion 110 fixed to the upper surface side of the heating chamber 13, a bent portion 120 that bends from the left side to the lower side of the first duct portion 110, and a left side surface side of the heating chamber 13. A second duct portion 130 that is fixed and is continuous with the first duct portion 110 via the bent portion 120 is provided.

The first duct portion 110 of the steam duct 100 houses the superheated steam generating heater 20. The first duct portion 110 of the steam duct 100 and the superheated steam generator heater 20 constitute a superheated steam generator 21. Note that the superheated steam generator may be provided separately from the steam duct.

Further, the right side of the first duct portion 110 of the steam duct 100 communicates with the steam supply port 22 provided in the upper part of the circulation unit 14. A plurality of first steam outlets 24 are provided on the top surface of the heating chamber 13, and the first duct portion 110 of the steam duct 100 communicates with the inside of the heating chamber 13 via the first steam outlet 24. ing. On the other hand, the second duct portion 130 of the steam duct 100 communicates with the inside of the heating chamber 13 through a plurality of second steam outlets 25 provided on the left side surface of the heating chamber 13.

The gap between the heating chamber 13 and the steam duct 100 is sealed with a heat resistant resin or the like. The heating chamber 13 and the steam duct 100 are covered with a heat insulating material (not shown) except for the front opening of the heating chamber 13.

A circulation path for circulating a heat medium (air containing steam) through the heating chamber 13 is formed by the circulation unit 14, the superheated steam generator 21, and a connecting member that connects them. Saturated steam generated by the saturated steam generator 12 is supplied to the boundary portion of the circulation unit 14 with the heating chamber 13 in this circulation path.

Further, a magnetron 80 (shown in FIG. 6) as an example of a microwave generating unit is disposed on the lower side of the casing 1. The microwave generated in the magnetron 80 is guided to the vicinity of the lower center of the heating chamber 13 by a waveguide (not shown), and is stirred in the heating chamber 13 by the rotating antenna 38 driven by the rotating antenna motor 37. The object to be heated 27 is heated by being emitted upward. In this case, the object to be heated 27 is arranged on the lower side or near the bottom surface in the heating chamber 13 without using the tray 30 or the net 40.

Further, a cooling fan part (not shown) and an electrical component part 17 are also arranged below the casing 1. The electrical component part 17 has a drive circuit that drives each part of the cooking device, a control circuit that controls the drive circuit, and the like.

FIG. 3 is a schematic side view of the cooking device. The same components as those in the cooking device shown in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof is omitted. 3, 45 is a dilution fan for supplying and exhausting air to the heating chamber 13 (shown in FIG. 2).

As shown in FIG. 3, a mist supply device 140 is disposed above the water supply tank 11 and in the vicinity of the circulation unit 14. The mist supply device 140 is supplied with water from the water supply tank 11 by a water supply pump 70 (shown in FIG. 6).

4 is a longitudinal sectional view taken along line IV-IV in FIG. 3. The same components as those in the cooking device shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. .

As shown in FIG. 4, a mist supply device 140 is disposed in the vicinity of the circulation unit 14. The mist supply device 140 includes a water reservoir 160 for storing water, and an ultrasonic vibration unit 150 that generates ultrasonic waves to the water accumulated in the water reservoir 160 to generate mist. The water reservoir 160 is configured so that the water supplied from the water supply tank 11 (shown in FIG. 3) overflows and keeps the position of the water surface substantially constant. The overflowed water is drained (not shown). To return to the water supply tank 11.

An inlet 160a is provided at a location facing the lower part of the circulation unit 14 of the water reservoir 160. The space in the water reservoir 160 and the space in the circulation unit 14 communicate with each other through the inlet 160a.

One end of the first mist supply pipe 170 is connected to the upper part of the mist supply device 140, and the other end of the first mist supply pipe 170 is connected to the upper part of the circulation unit 14. One end of the second mist supply pipe 180 is connected to the other end of the first mist supply pipe 170, and the other end of the second mist supply pipe 180 is positioned in the vicinity of the steam supply port 22 provided in the upper part of the circulation unit 14. The steam supply port 22 of the circulation unit 14 has a tapered shape that gradually narrows toward the downstream side, and the outlet 180a side of the second mist supply pipe 180 is disposed inside the steam supply port 22. As a result, the flow path cross-sectional area of the steam supply port 22 is reduced, and the flow rate of the heat medium (air containing water vapor) is increased. Accordingly, mist is drawn from the outlet 180a side of the second mist supply pipe 180 toward the downstream side of the steam supply port 22 (ejector effect). Here, the heat medium includes a case where the ratio of air is small and most of the heat medium is saturated steam or superheated steam.

The taper-shaped steam supply port 22 side of the circulation unit 14 and the outlet 180a side of the second mist supply pipe 180 constitute an ejector section.

The inlet 160a of the mist supply device 140 is provided at a position where the static pressure is higher than the downstream side of the circulation fan 18 in the circulation unit 14 and the outlet 180a side of the mist supply device 140.

Further, four steam supply ports 22 of the mist supply device 140 are provided at intervals in the front-rear direction, and the outlet 180a of the second mist supply pipe 180 is disposed in the steam supply port 22 on the foremost side. Yes.

FIG. 5 is a longitudinal sectional view taken along line VV in FIG. 3. The same components as those in the cooking device shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. .

In the heating cooker, by stopping the circulation fan 18, the mist flows out from the inlet 160a of the mist supply device 140 (shown in FIG. 4) into the circulation unit 14 (circulation path) and is filled. At this time, the mist filled in the circulation unit 14 is guided to the bottom side in the heating chamber 13 by its own weight by the mist guide portion 190 provided on the side wall of the heating chamber 13 and below the steam inlet 15 of the circulation path. The As a result, most of the mist supplied from the mist supply device 140 can be collected on the bottom side in the heating chamber 13, and a high-concentration mist is placed around the object to be heated placed on the bottom surface in the heating chamber 13. Can supply.

FIG. 6 shows a control block diagram of the cooking device.

As shown in FIG. 6, the heating cooker includes a control device 200 including a microcomputer and an input / output circuit in the electrical component section 17 (shown in FIG. 2). The control device 200 includes a superheated steam generation heater 20, a circulation fan motor 19, a cooling fan motor 16, a supply damper motor 44, an exhaust damper motor 60, an operation panel 5, an internal temperature sensor 29, and a thawing sensor. 50, a water supply pump 70, a saturated water vapor generator 12, a magnetron 80, a motor 37 for a rotating antenna, a motor 46 for a dilution fan, a speech synthesizer 300, an ultrasonic vibration unit 150, and the like are connected. Based on the signal from the operation panel 5 and the detection signals from the internal temperature sensor 29 and the thawing sensor 50, the control device 200 performs the superheated steam generation heater 20, the circulation fan motor 19, the cooling fan motor 16, the supply damper. Motor 44, exhaust damper motor 60, operation panel 5, water supply pump 70, saturated steam generator 12, magnetron 80, rotating antenna motor 37, dilution fan motor 46, speech synthesizer 300, ultrasonic vibration section 150, etc. To control. The voice synthesizer 300 outputs signals representing voice, notification sound, melody sound, key touch sound, and the like to the speaker 90.

The control device 200 includes a heating steam control unit 200 a that controls the saturated steam generator 12, the superheated steam generation heater 20, and the magnetron 80, and a mist control unit 200 b that controls the ultrasonic vibration unit 150.

In the cooking device having the above configuration, when heating cooking is performed using superheated steam, the superheated steam generating heater 20 shown in FIG. 2 is turned on and the circulation fan 18 is rotationally driven. Thus, the mist supplied from the mist supply device 140 to the vicinity of the steam supply port 22 of the circulation unit 14 is sucked into the circulation unit 14 which is in a negative pressure by the rotation of the circulation fan 18 through the outlet 180a. Thus, the steam is supplied from the steam supply port 22 into the superheated steam generator 21. The mist is heated by the superheated steam generation heater 20 of the superheated steam generation device 21 to become superheated steam. A part of this superheated steam blows downward into the heating chamber 13 from a plurality of first steam outlets 24 provided on the top surface of the lower heating chamber 13. Further, another part of the superheated steam is blown out into the heating chamber 13 from the second steam outlet 25 of the heating chamber 13 through the steam duct 100.

Then, the superheated steam supplied into the heating chamber 13 heats the heated object 27 mounted on the net 40 on the tray 30, and then enters the steam inlet 15 of the circulation unit 14 on the right wall surface of the heating chamber 13. The air is sucked into the circulation unit 14 from the suction port 28 formed oppositely. Then, the circulation of returning to the heating chamber 13 through the circulation path again is repeated.

In the cooking using the superheated steam, the water supply to the mist supply device 140 is intermittently supplied from the water supply tank 11 by the water supply pump 70 (shown in FIG. 6).

In addition, when cooking the to-be-heated material 27 using saturated water vapor | steam, while turning off the superheated steam production | generation heater 20, the circulation fan 18 is stopped. Then, since the circulation fan 18 is stopped, no circulation airflow is generated in the circulation path, and the saturated water vapor supplied from the saturated water vapor generator 12 to the vicinity upstream of the vapor inlet 15 of the circulation unit 14 is It is not forcibly sucked into the circulation unit 14. Thereby, the to-be-heated material 27 is steamed or warmed by the saturated water vapor that naturally flows into the heating chamber 13 by the water vapor pressure.

According to the cooking device configured as described above, the mist is supplied from the mist supply device 140 to the downstream side of the circulation fan 18 in the circulation path for circulating the heat medium (water containing steam) through the heating chamber 13. Thus, the mist from the mist supply device 140 is drawn into the flow of the heat medium on the downstream side of the circulation fan 18 and is smoothly supplied to the heating chamber 13 through the circulation path. Therefore, mist can be efficiently supplied to the heating chamber 13 with a simple configuration.

Further, a heat medium (from the circulation fan 18 to the mist supply device 140 is provided from the inlet 160a provided at a position where the static pressure is higher than the circulation fan 18 in the circulation path and at the outlet 180a side of the mist supply device 140. Air containing water vapor) flows in, and the mist is supplied to the downstream side of the circulation fan 18 from the outlet 180a of the mist supply device 140 together with the heat medium. Thereby, mist can be more efficiently supplied to the heating chamber 13 without introducing outside air.

Further, the inlet 160a of the mist supply device 140 is provided below the circulation unit 14 so that the heat medium (air containing water vapor) flows along the surface of the water accumulated in the water reservoir 160 of the mist supply device 140. As a result, the mist concentration in the vicinity of the surface of the water accumulated in the water reservoir 160 is lowered, so that the generation efficiency of new mist by the ultrasonic vibration unit 150 is improved, and more mist can be generated.

Further, the heating medium (air containing water vapor) circulating in the circulation path is heated via the heating chamber 13 by the superheated steam generation heater 20 arranged in the circulation path, so that it is supplied from the mist supply device 140. The mist can be easily changed to steam or superheated steam.

In addition, a heat medium (including water vapor) that flows into the circulation unit 14 by the circulation fan 18 is formed by the ejector portion that is configured on the tapered steam supply port 22 side of the circulation unit 14 and the outlet 180a side of the second mist supply pipe 180. Since the mist in the mist supply device 140 is sucked into the air flow, the mist can be efficiently supplied from the mist supply device 140 using the flow in the circulation unit 14.

Further, when the object to be heated is heated by the microwave supplied from the magnetron 80 (microwave generator), the mist from the mist supply device 140 is supplied into the heating chamber 13. Thus, for example, when thawing frozen food, the surface side of the food is likely to rise in temperature due to microwaves compared to the inside of the food, causing uneven heating. However, during thawing by microwaves, mist from the mist supply device 140 is removed from the food. By supplying to the surface, the temperature rise on the surface side of the food can be suppressed and the whole food can be heated uniformly.

The mist supply device 140 may be provided with a hot water supply device 210 (shown in FIG. 6) that supplies hot water of 70 ° C. to 80 ° C., for example. In this case, the generation efficiency of mist can be improved, and warm water can be sterilized by storing warm water of 75 ° C. or higher in the hot water supply device 210 for 1 minute or longer.

Moreover, in the said 1st Embodiment, although the inlet 160a of the mist supply apparatus 140 was provided in the location facing the lower part of the circulation unit 14 of the water reservoir 160, the inlet of a mist supply apparatus is not restricted to this, and external air is introduce | transduced. An inlet may be provided.

[Second Embodiment]
FIG. 7 shows a control block diagram of a heating cooker according to the second embodiment of the present invention. The heating cooker according to the second embodiment has the same configuration as the heating cooker according to the first embodiment except for the infrared array sensor 1100 and the control device 1200, and FIGS.

The heating cooker according to the second embodiment includes an infrared array sensor 1100 that detects the temperature of 64 areas obtained by dividing the bottom of the heating chamber 13 in a grid pattern. The infrared array sensor 1100 includes a plurality of infrared sensor elements arranged in a matrix on a semiconductor substrate, and a Fresnel lens for condensing infrared rays on the infrared sensor elements. The infrared array sensor 1100 detects the temperatures of a plurality of locations on the surface of the object to be measured by detecting infrared rays emitted from the object to be measured within the viewing angle. As each infrared sensor element, for example, a thermopile or a pyroelectric sensor is used. The thermopile is configured by connecting several tens of thermocouples in series.

In the heating cooker, when a dish (or container) on which food is placed is placed in the heating chamber 13 and heated by the microwave generated by the magnetron 80, when the food is heated by the microwave, the food is heated. Is transmitted and the plate gradually gets hot.

At this time, the control device 1200 identifies the heated dish based on the time difference of the temperature rise of each area detected by the infrared array sensor 1100 during the microwave heating.

Then, when the cooking is finished, the control unit 1200 controls the voice synthesizer 300 to output the voice and the notification sound from the speaker 90 and to display on the liquid crystal display unit 6 that the dish is hot.

This can prevent the heated dish from being burned to the hand.

In addition, the control device 1200 indicates that the temperature of the dish has been lowered based on the temperature of each area detected by the infrared array sensor 1100 to the extent that the temperature of the identified dish has not been burned. A sound and a notification sound are output from the display and displayed on the liquid crystal display unit 6.

In the second embodiment, the infrared array sensor 1100 that detects the temperature of 64 areas is provided, but a plurality of infrared sensors and a scanning mechanism may be combined to scan the bottom of the heating chamber 13. .

[Third Embodiment]
FIG. 8 shows a control block diagram of a heating cooker according to the third embodiment of the present invention. The heating cooker according to the third embodiment has the same configuration as that of the heating cooker according to the first embodiment except for a WiFi (Wireless Fidelity) communication unit 2100 and a control device 2200, and FIGS. To do.

The heating cooker according to the third embodiment includes a WiFi communication unit 2100 controlled by the control device 2200.

The control device 2200 controls the WiFi communication unit 2100 to perform wireless communication with a smartphone or a wearable terminal.

Here, the smartphone or wearable terminal includes at least one sensor for measuring medical data such as body temperature, pulse, blood pressure, weight, body fat, bone density, blood vessel age, blood oxygen concentration, and the like. For example, a general smartphone does not include such a sensor, but a sensor device that measures the medical data is connected to the smartphone and used. As wearable terminals, there are wristwatch-type and glasses-type information terminals.

The control device 2200 makes a suggestion of a cooking menu according to the user's health state based on the medical data from such a smartphone or wearable terminal by voice, notification sound, and display on the liquid crystal display unit 6.

In addition, the age and sex of the user at this time shall be preset in a smart phone, a wearable terminal, or a heating cooker main body.

For example, there are the following cooking menus according to the health condition of the user.

・ Provide a salt reduction menu for users with high blood pressure ・ Propose a deoiling menu for users with high body fat ・ Provide a calcium absorption menu for users with low bone density A physical condition determination unit for determining physical condition may be provided to propose a cooking menu rich in vitamins, a cooking sequence that does not impair vitamins, and the like.

[Fourth Embodiment]
FIG. 9 shows a control block diagram of a heating cooker according to the fourth embodiment of the present invention. The heating cooker according to the fourth embodiment has the same configuration as that of the heating cooker according to the first embodiment except for the proximity sensor 3100 and the control device 3200, and FIGS.

The heating cooker according to the fourth embodiment includes a proximity sensor that detects a user's hand movement within a close distance (for example, several tens of centimeters) from the front of the main body. The proximity sensor 3100 includes a light emitting element and a light receiving element, and can detect not only the distance and size of the measurement target but also the up / down / left / right moving directions.

Based on the movement of the user's hand detected by the proximity sensor 3100, the heating cooker control device 3200 turns on the illumination unit provided on the front surface or opens the door 2 without touching the operation panel 5. Or start cooking.

Here, the user operates various gestures by moving a hand gesture in advance in front of the cooking device.

As a result, the user can operate by moving his / her hand when the operation panel 5 cannot be touched because his / her hand is soiled with food or seasonings or has food. Improves.

[Fifth Embodiment]
Next, a heating cooker according to a fifth embodiment of the present invention will be described. The cooking device of the fifth embodiment has the same configuration as that of the cooking device of the first embodiment except for the operation of the control device 200, and FIGS. 1 to 6 are used.

The heating cooker according to the fifth embodiment includes a voice synthesizer 300 (shown in FIG. 6) that outputs a voice signal to the speaker 90. The voice synthesizer 300 is a voice LSI including a voice output microcomputer controlled by a main LSI (large scale integrated circuit) including a microcomputer of the control device 200.

The control device 200 and the speech synthesizer 300 have a sleep mode function that minimizes power consumption. Note that in the control device 200 in the sleep state, only the input of the button group 7 of the operation panel 5 functions.

And when starting from the sleep state, after the key input is detected and the control device 200 is started, the speech synthesizer 300 is started with a delay. The time lag of activation of the speech synthesizer 300 relative to activation of the control device 200 is 0. It is about a few seconds.

Here, when the voice synthesizer 300 outputs the voice immediately after the key input, since the voice output is delayed from the key input, the user feels uncomfortable.

Therefore, in this cooking device, when the user releases the key by pressing the key operation for canceling the sleep for a long time (a time longer than the time lag of activation of the speech synthesizer 300) and outputting a voice at the end of the long time press. The voice synthesizer 300 is activated, and a voice signal is output from the voice synthesizer 300 without delay after the key is released.

Thus, when the voice synthesizer 300 outputs voice immediately after key input, it is possible to prevent erroneous operation of canceling the sleep, and the voice output is not delayed from the key input (long press), so that the user does not feel uncomfortable.

Note that the key operation for canceling sleep is not limited to a long press, and may be a key operation with a long operation time such as a slide operation on the touch panel.

In the first to fifth embodiments, the mist is generated by the ultrasonic vibration method. However, the mist may be generated by a nozzle method in which water is sprayed in a mist form from a small injection port.

In the cooking device of the present invention, healthy cooking can be performed by using superheated steam or saturated steam in a microwave oven or the like. For example, in the cooking device of the present invention, superheated steam or saturated steam having a temperature of 100 ° C. or higher is supplied to the food surface, and the superheated steam or saturated steam attached to the food surface is condensed to give a large amount of condensation latent heat to the food. So it can efficiently transfer heat to food. Moreover, when condensed water adheres to the food surface and salt and oil are dropped together with condensed water, salt and oil in the food can be reduced. Further, the heating chamber is filled with superheated steam or saturated steam to be in a low oxygen state, thereby enabling cooking while suppressing food oxidation. Here, the low oxygen state refers to a state in which the volume percentage of oxygen in the heating chamber is 10% or less (for example, 0.5 to 3%).

FIG. 10 shows the change in oxygen concentration in the heating chamber when the mist generated by ultrasonic vibration of the heating cooker of the present invention is changed to superheated steam, and when the saturated steam evaporated by heater heating is changed to superheated steam. The comparative example of the change of the oxygen concentration in the heating chamber is shown.

As shown in FIG. 10, the cooking device of the present invention has a faster falling of the oxygen concentration when the mist is changed to superheated steam than the comparative example where the saturated steam is changed to superheated steam, and after a long time. A lower oxygen concentration than the comparative example can be realized.

Although specific embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention.

The cooking device of this invention is
A heating chamber 13 for heating an object to be heated;
A circulation path for circulating the heat medium through the heating chamber 13;
A circulation fan 18 disposed in the circulation path;
A mist supply device 140 that supplies mist in the circulation path and downstream of the circulation fan 18 is provided.

According to the above configuration, by supplying mist from the mist supply device 140 to the downstream side of the circulation fan 18 in the circulation path for circulating the heat medium through the heating chamber 13, the heat on the downstream side of the circulation fan 18 is obtained. The mist from the mist supply device 140 is drawn into the flow of the medium and is smoothly supplied to the heating chamber 13 through the circulation path. Therefore, mist can be efficiently supplied to the heating chamber 13 with a simple configuration.

Moreover, in the heating cooker of one embodiment,
An inlet 160 a of the mist supply device 140 is provided at a position where the static pressure is higher on the downstream side of the circulation fan 18 in the circulation path than on the outlet side of the mist supply device 140.

According to the above embodiment, the heat medium from the circulation fan 18 to the mist supply device 140 from the inlet provided at a position where the static pressure is higher on the downstream side of the circulation fan 18 in the circulation path than on the outlet side of the mist supply device 140. The mist is supplied to the downstream side of the circulation fan 18 together with the heat medium from the outlet of the mist supply device 140. Thereby, mist can be supplied to the heating chamber 13 more efficiently.

Moreover, in the heating cooker of one embodiment,
The mist supply device 140 includes a water reservoir 160 for storing water at a substantially constant water level, and an ultrasonic vibration unit 150 that generates ultrasonic waves to the water accumulated in the water reservoir 160 to generate mist.
The inlet 160a of the mist supply device 140 is provided in the circulation path so that the heat medium flows along the surface of the water accumulated in the water reservoir 160 of the mist supply device 140.

According to the embodiment, the inlet 160a of the mist supply device 140 is provided in the circulation path so that the heat medium flows along the surface of the water (water level is substantially constant) collected in the water reservoir 160 of the mist supply device 140. As a result, the mist concentration in the vicinity of the surface of the water accumulated in the water reservoir 160 is lowered, so that the generation efficiency of new mist by the ultrasonic vibration unit 150 is improved, and more mist can be generated.

Moreover, in the heating cooker of one embodiment,
A suction port 28 of the circulation path provided on the side wall of the heating chamber 13,
Mist, which is provided on the side wall of the heating chamber 13 and below the suction port 28 of the circulation path, and is supplied from the mist supply device 140 in a stopped state of the circulation fan 18, is supplied from the circulation path to the heating chamber 13. The mist guide part 190 which guides to the bottom side of was provided.

According to the embodiment, by stopping the circulation fan 18, the mist supplied from the mist supply device 140 is filled in the circulation path, and is placed on the side wall of the heating chamber 13 and below the suction port 28 of the circulation path. By the provided mist guide part 190, the mist filled in the circulation path is guided to the bottom side in the heating chamber 13 by its own weight. As a result, most of the mist supplied from the mist supply device 140 can be collected on the bottom side in the heating chamber 13, and a high-concentration mist is placed around the object to be heated placed on the bottom surface in the heating chamber 13. Can supply.

Moreover, in the heating cooker of one embodiment,
A heater 20 disposed in the circulation path was provided.

According to the above embodiment, the heater 20 arranged in the circulation path heats the heat medium circulating in the circulation path via the heating chamber 13, so that the mist supplied from the mist supply device 140 is steamed or superheated. Water vapor can be easily formed.

Moreover, in the heating cooker of one embodiment,
A hot water supply device 210 that supplies hot water to the mist supply device 140 is provided.

According to the above embodiment, the mist generation efficiency can be improved by supplying hot water of, for example, 70 ° C. to 80 ° C. from the hot water supply device 210 to the mist supply device 140. Moreover, warm water can be sterilized by storing warm water at 75 ° C. or higher for 1 minute or longer with the hot water supply device 210.

Moreover, in the heating cooker of one embodiment,
An ejector portion is provided on the outlet 180a side of the mist supply device 140, and the mist in the mist supply device 140 is sucked into the flow of the heat medium flowing through the circulation path by the circulation fan 18.

According to the embodiment, the mist in the mist supply device 140 is sucked into the flow of the heat medium flowing in the circulation path by the circulation fan 18 by the ejector portion provided on the outlet 180a side of the mist supply device 140. The mist can be efficiently supplied from the mist supply device 140 using the flow in the circulation path.

Moreover, in the heating cooker of one embodiment,
A microwave generator 80 for supplying microwaves into the heating chamber 13;
When the object to be heated is heated by the microwave supplied from the microwave generator 80, the mist from the mist supply device 140 is supplied into the heating chamber 13 through the circulation path.

According to the above embodiment, when the object to be heated is heated by the microwave supplied from the microwave generator 80, the mist from the mist supply device 140 is supplied into the heating chamber 13 through the circulation path. Thus, for example, when thawing frozen food, the surface side of the food is likely to rise in temperature due to microwaves compared to the inside of the food, causing uneven heating. However, during thawing by microwaves, mist from the mist supply device 140 is removed from the food. By supplying to the surface, the temperature rise on the surface side of the food can be suppressed and the whole food can be heated uniformly.

DESCRIPTION OF SYMBOLS 1 ... Casing 2 ... Door 3 ... Handle 4 ... Heat-resistant glass 5 ... Operation panel 6 ... Color liquid crystal display part 7 ... Button group 8 ... Exhaust duct 9 ... Dew receptacle 11 ... Water supply tank 12 ... Saturated steam generator 13 ... Heating chamber DESCRIPTION OF SYMBOLS 14 ... Circulation unit 15 ... Steam inlet 16 ... Cooling fan motor 17 ... Electrical component part 18 ... Circulation fan 19 ... Circulation fan motor 20 ... Superheated steam generation heater 21 ... Superheated steam generation device 22 ... Steam supply port 24 ... First DESCRIPTION OF SYMBOLS 1 Steam blower outlet 25 ... 2nd steam blower outlet 27 ... To-be-heated object 28 ... Suction inlet 29 ... Inside temperature sensor 30 ... Tray 34 ... Steam supply pipe 37 ... Motor for rotation antenna 38 ...

Rotation antenna

39a, 39b, 39c ... Locking portion 40 ... Net 44 ... Supply damper motor 45 ... Dilution fan 46 ... Dilution fan motor 50 ... Defrost sensor 60 ... Exhaust damper motor 7 DESCRIPTION OF SYMBOLS ... Water supply pump 80 ... Magnetron 90 ... Speaker 100 ... Steam duct 110 ... 1st duct part 120 ... Bending part 130 ... 2nd duct part 140 ... Mist supply apparatus 150 ... Ultrasonic vibration part 160 ... Water reservoir 160a ... Inlet 170 ... 1st DESCRIPTION OF SYMBOLS 1 Mist supply pipe 180 ... 2nd mist supply pipe 180a ... Outlet 190 ...

Mist guide part

200,1200,2200,3200 ... Control apparatus 200a ... Heating control part 200b ... Mist control part 210 ... Hot water supply apparatus 300 ... Speech synthesizer 1100 ... Infrared array sensor 2100 ... WiFi communication unit 3100 ... Proximity sensor

Claims

A heating chamber (13) for heating an object to be heated;
A circulation path for circulating the heat medium through the heating chamber (13);
A circulation fan (18) disposed in the circulation path;
A heating cooker comprising a mist supply device (140) for supplying mist in the circulation path and downstream of the circulation fan (18).
The heating cooker according to claim 1, wherein
An inlet (160a) of the mist supply device (140) is provided at a position where the static pressure is higher on the downstream side of the circulation fan (18) in the circulation path than on the outlet side of the mist supply device (140). A cooking device characterized by that.
The cooking device according to claim 2,
The mist supply device (140) includes a water reservoir (160) for accumulating water at a substantially constant water level, and an ultrasonic vibration for generating mist by applying ultrasonic vibration to water accumulated in the water reservoir (160). Part (150),
The inlet (160a) of the mist supply device (140) is provided in the circulation path so that the heat medium flows along the surface of the water accumulated in the water reservoir (160). To cook.
In the heating cooker according to any one of claims 1 to 3,
A suction port (28) in the circulation path provided on the side wall of the heating chamber (13);
Provided on the side wall of the heating chamber (13) and below the suction port (28) of the circulation path, the mist supplied from the mist supply device (140) when the circulation fan (18) is stopped is circulated. A cooking device comprising a mist guide part (190) for guiding from the inside of the path to the bottom side of the heating chamber (13).
In the heating cooker according to any one of claims 1 to 4,
Provided on the outlet side of the mist supply device (140), and includes an ejector portion for sucking the mist in the mist supply device (140) into the flow of the heat medium flowing in the circulation path by the circulation fan (18). A cooking device characterized by that.