JP2008171693A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy-saving heating cooker that can be used easily regardless of whether adjacent walls are at the right or left side, and supplies cooling air volume according to the individual heating power of a plurality of heating coils. <P>SOLUTION: In the case of small heating power cooking, a first control circuit 96a drives a heating circuit 95a at a small heating power side based on the setting information of a heating power operation volume 11a for cooking. In this case, the temperature of a vessel detected by a temperature detector 81a is converted to temperature information by a first temperature detection circuit 97a and is outputted to a first control circuit 96a. The first control circuit 96a calculates the rotational speed of a cooling fan based on the temperature information, and outputs it to a first fan drive circuit 98a as command information. The first fan drive circuit 98a drives a cooling fan unit 25a according to a command from the first control circuit 96a and controls the rotational speed, thus adjusting air volume according to the small thermal power. The same applies to the case of large thermal power cooking. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device that includes a plurality of induction heating coils and a roaster, and cools them with a fan.

  Conventionally, a plurality of induction heating coils and an upper unit including an inverter unit for controlling them, a roaster and electrical equipment, and a lower unit disposed below the upper unit are provided. There is known an induction heating cooker that cools the inverter unit of the upper unit and the electrical components of the lower unit in parallel by the air blowing action of the driven cooling fan. (For example, see Patent Document 1)

  However, in the conventional induction heating cooker shown in Patent Document 1, since it is necessary to secure a large space for placing the substrate, the roaster cannot be placed in the middle and must be moved to the left or right. In addition, fresh air for cooling was also drawn from the kitchen surface (upper surface). In this case, for example, when the cooking device in which the roaster is arranged on the left side is installed at a position where the wall approaches the left side, there is a problem that the usability is not good in operation.

As a method for solving this problem, there is known an induction heating cooker in which a roaster is disposed substantially in the center, and a control device is disposed in a substantially symmetrical position across the roaster. (For example, see Patent Document 2)
In a heating coil with a large heating power, a corresponding current flows, so that heat generation from the heating coil increases, and accordingly, a large amount of cooling air is required. On the other hand, in a heating coil with a small heating power, heat generated from the heating coil is reduced, and the amount of cooling air can be reduced. Therefore, less power is required to drive the cooling fan, and power can be saved. However, in the conventional induction heating cooker shown by said patent document 2, adjusting air volume according to a thermal power is not disclosed at all.

JP-A-11-87038 (FIG. 1, paragraphs 0027 to 0029) JP 2002-31353 A (FIG. 1, paragraph 0014)

  As described above, the conventional induction heating cooker disclosed in Patent Document 1 has a problem in that it is necessary to bring the roaster to either the left or right side, which is not convenient for operation.

  Further, the conventional induction heating cooker disclosed in Patent Document 2 has a problem that there is no air volume adjustment function according to the heating power of the heating coil.

  The present invention has been made in order to solve the above-described problems, and is easy to use regardless of whether the adjacent wall is on the left or right side, and is a power-saving type that supplies a cooling air volume corresponding to the heating power of the heating coil The purpose is to provide a cooking device.

  A cooking device according to the present invention includes a top plate for placing a container, a main body provided below the top plate, a plurality of IH heating coils provided above the main body and below the top plate, A detector for detecting a cooking state; and an upper and lower partition plate provided between the top plate and the main body, the main body being provided on the left and right sides of the grill unit and for sucking outside air forward A plurality of air passages, each air passage communicating with the upper part of the upper and lower partition plates at the rearmost part, and further extending along the left and right ends of the upper part of the upper and lower partition plates to the lower part of the IH coil. A cooling fan unit provided for each path, and a control unit that controls the cooling fan unit so that the air volume changes based on the detection result of the detector.

  According to the present invention, since the roaster is disposed at the approximate center in the left-right direction at the lower part of the casing, it is easy to use regardless of whether the wall adjacent to the heating cooker is on the left or right side, and based on the detection result of the detector. Since the cooling fan unit is controlled so that the air volume changes, it is not necessary to consume wasteful power, and power can be saved.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an overall configuration of a heating cooker in all the embodiments of the present invention. As shown in FIG. 1, the heating cooker 100 includes a main body 1 and a top plate 2 provided on the upper portion of the main body 1. The top plate 2 includes left and right IH heating units 3a and 3b, a radial heater 4 provided at the back, a liquid crystal display unit 5 provided at the front, and an exhaust port provided at the back of the radial heater 4. 6, an exhaust cover 7, a frame 8, and top key operation units 9 a and 9 b provided on the left and right sides of the front surface. Further, on the front side of the main body 1, a grill door 10, thermal power operation volumes 11a and 11b provided on the left and right sides of the grill door 10, and decorative panels 12a and 12b provided at the lower part of the thermal power operation volumes 11a and 11b are provided. I have.

  FIG. 2 is a perspective view of the cooking device with a part of the top plate and a part of the front panel removed. FIG. 3 is a perspective view of the cooking device with the top plate removed. As shown in FIGS. 2 and 3, an upper and lower partition plate 21 is provided at the lower portion of the top plate 2, and this upper and lower partition plate 21 is provided with one induction heating IH heating coil on each of the left and right sides. 22a, 22b, top surface operation key substrates 23a, 23b that operate in response to input operations from the top surface operation key portions 8a, 8b, and substrates 24a, 24b provided corresponding to the IH heating coils 22a, 22b, Cooling fan units 25a and 25b provided corresponding to the IH heating coils 22a and 22b and IH cooling ducts 26a and 26b (not shown) provided corresponding to the IH heating coils 22a and 22b are provided. ing. Further, front intake openings 27a and 27b (not shown) are provided below the thermal operation volumes 11a and 11b and inside the decorative panels 11a and 11b. Further, upper unit vent holes 31a and 31b are provided in the back of the substrates 24a and 24b on the upper and lower partition plates 21, respectively, and a grill exhaust duct 32 is provided in the back center.

  4 is a perspective view showing the configuration of the lower main body, and FIG. 5 is a plan view thereof. 4 and 5, the main body 1 includes a grill unit 41 provided at the center, grill shield plates 42a and 42b provided on the left and right sides of the grill unit 41 to shield heat transfer from the grill unit 41, and the grill. It consists of lower cooling air passages 43a and 43b formed between the shielding plates 42a and 42b and the outer plate of the main body 1. Further, an exhaust duct 32 for exhausting the exhaust from the grill unit 41 to the outside is provided at the back of the grill unit 41. As described above, the grill door 10 and the decorative panels 12a and 12b are provided on the front side.

FIG. 6 is a vertical cross-sectional view (right side view) of the heating cooker, and shows the flow of cooling air at the same time. FIG. 7 is a cross-sectional view (plan view) taken along line AA in FIG. Next, the flow of cooling air will be described with reference to FIGS.
As shown in FIG. 6, downward intake ports 61 a and 61 b are opened one by one on the left and right of the lower part of the front surface of the heating cooker, and outside air is sucked into the cooling fan units 25 a and 25 b from the intake ports 61 a and 61 b. It is taken in by force and sent to the back via the lower cold air passages 43a and 43b, respectively. And when it reaches the last part, it rises along the air path bent upwards, and passes through upper unit ventilation openings 31a and 31b. Thereafter, the cooling air is guided forward from the back along the air passage covers 62a, 62b and the upper and lower partition plates 21, and is then guided to the IH heating coil cooling ducts 26a, 26b after cooling the substrates 24a, 24b. The cooling air guided to the IH heating coil cooling ducts 26a and 26b is further blown upward through the cooling air blowing holes 63a and 63b, respectively, and after cooling the heating coils 22a and 22b, the exhaust outlet at the center back It collects in 6 and is exhausted outside from here collectively.

FIG. 8 is a longitudinal sectional view of the heating cooker according to Embodiment 1 of the present invention. The configuration is the same as that shown in FIG. 6 except that temperature detectors 81a and 81b are provided below the top plate. FIG. 9 is a block diagram showing the relationship between the heating circuit of the cooking device and the air volume adjustment in the first embodiment of the present invention.
As shown in FIG. 9, the circuit of the heating cooker 100 includes a commercial AC power supply 91, a full-wave rectifier 92 composed of a diode bridge, a smoothing capacitor 93, a choke coil 94, and an inverter circuit (hereinafter simply referred to as thermal power). A small-side heating circuit) 95a, a full-bridge inverter circuit (hereinafter simply referred to as a heating-side large heating circuit) 95b, and a first control circuit 96a and a second control circuit 96b for controlling these respectively, It consists of thermal power operation volumes 11a and 11b. The small heating power side heating circuit 95a is provided with an IH heating coil 22a, and the large heating power side heating circuit 95b is provided with an IH heating coil 22b.
Further, on the IH heating coil 22a side, a temperature detector (infrared sensor, thermistor, etc.) 81a for detecting the temperature of the container, and a signal detected by the temperature detector 81a are converted into temperature information, and a first control circuit is provided. A first temperature detection circuit 97a that outputs to 96a and a first fan drive circuit 98a that drives the rotational speed of the cooling fan unit 25a based on a command from the first control circuit 96a are provided.
Further, on the IH heating coil 22b side, a temperature detector (infrared sensor, thermistor, etc.) 81b for detecting the temperature of the container, and a signal detected by the temperature detector 81b is converted into temperature information, and the second control circuit. A second temperature detection circuit 97b that outputs to 96b, and a second fan drive circuit 98b that drives the rotational speed of the cooling fan unit 25b based on a command from the second control circuit 96b are provided.
The circuits other than the IH heating coils 22a and 22b are mounted on the substrates 24a and 24b.
As described above, since the grill is arranged in the central portion, it is easy to use regardless of whether the adjacent wall is on the left or right side.

Next, the operation of the first embodiment will be described with reference to FIGS.
The AC voltage from the commercial AC power supply 91 is converted into a DC voltage by a full-wave rectifier 92, a smoothing capacitor 93, and a choke coil 94.
When the user operates the thermal operation volume 11a to set a small thermal power, this signal is input to the first control circuit 96a, and the first control circuit 96a drives the small thermal power heating circuit 95a. . As a result, the DC voltage is converted to AC by the small heating power side heating circuit 95a, and an alternating current based on the voltage corresponding to the small heating power flows through the IH heating coil 22a. As a result, an eddy current corresponding to a small heating power flows through the container placed on the top plate 2, the container is heated, and the contents of the container are cooked. At this time, the temperature detector 81a provided under the top plate 2 detects infrared rays emitted from the container and outputs a detection signal to the first temperature detection circuit 97a. When the detection signal is input from the temperature detector 81a, the first temperature detection circuit 97a converts the detection signal into temperature information and outputs the temperature information to the first control circuit 96a. When the temperature information is input from the first temperature detection circuit 97a, the first control circuit 96a calculates the number of rotations of the cooling fan proportional to the temperature information, and outputs it to the first fan drive circuit 98a as command information. When the first fan drive circuit 98a receives a command from the first control circuit 96a, the first fan drive circuit 98a drives the cooling fan unit 25a in accordance with the command and controls the number of rotations thereof. Thereby, the air volume adjustment according to the small heating power is performed.

In addition, when the user operates the thermal operation volume 11b and a large thermal power is set, this signal is input to the second control circuit 96b, and the second control circuit 96b controls the small thermal power heating circuit 95b. To drive. As a result, the DC voltage is converted to AC by the heating power large side heating circuit 95b, and an alternating current based on the voltage corresponding to the large heating power flows through the IH heating coil 22b. As a result, an eddy current corresponding to a large heating power flows through the container placed on the top plate 2, the container is heated, and the contents of the container are cooked. At this time, the temperature detector 81b provided under the top plate 2 detects infrared rays emitted from the container and outputs a detection signal to the second temperature detection circuit 97b. When the detection signal is input from the temperature detector 81b, the second temperature detection circuit 97b converts the detection signal into temperature information and outputs it to the second control circuit 96b. When the temperature information is input from the second temperature detection circuit 97b, the second control circuit 96b calculates the number of rotations of the cooling fan proportional to the temperature information, and outputs it to the second fan drive circuit 98b as command information. When the second fan drive circuit 98b receives a command from the second control circuit 96b, the second fan drive circuit 98b drives the cooling fan unit 25b and controls the number of rotations in accordance with the command. Thereby, the air volume adjustment according to a large thermal power is performed.
Note that the cooling fan unit is independent on the left and right, and both can be operated simultaneously or only one can be operated freely. Moreover, when driving only one side, it is necessary to prevent the wind from flowing backward from the cooling fan that is not operating, and as a countermeasure, partitioning the inside of the heating cooker can be considered. However, by operating the cooling fan unit that is not operating weakly, it is possible to prevent the wind from flowing backward from this cooling fan. In this case, it is necessary to partition the inside of the heating cooker. Disappear.
In the above example, the case where the temperature detector is provided in the lower portion of the top plate has been described. However, the temperature detector is not limited to this, and may be anywhere as long as the temperature of the container can be measured. For example, you may provide in the upper part of a top plate.

  As described above, according to the first embodiment, since the grill is arranged in the center, it is easy to use regardless of whether the adjacent wall is on the left or right side. Further, the heating cooker increases the air volume of the corresponding cooling fan when the large IH heating coil is used, and decreases the air volume of the corresponding cooling fan when the small IH heating coil is used. Therefore, the cooker can freely select a heating coil with a large or small heating power according to the cooking contents, and can enjoy a comfortable cooking, and the optimum cooling air volume according to the heating power is automatically adjusted to save the cooking. Electricity can be planned.

Embodiment 2. FIG.
FIG. 10 is a longitudinal sectional view of a heating cooker according to Embodiment 2 of the present invention. The configuration is the same as that of FIG. 8 except that a first shielding plate 101a and a second shielding plate 101b are respectively added near the intake ports 61a and 61b. FIG. 11 is a block diagram showing the relationship between the heating circuit of the heating cooker and the air volume adjustment in the second embodiment of the present invention. The configuration is the same as that of FIG. 9 except that a first shielding plate 101a, a second shielding plate 101b, a first shielding plate drive circuit 111a, and a second shielding plate drive circuit 111b are added. The first shielding plate driving circuit 111a and the second shielding plate driving circuit 111b are constituted by a motor and a driving circuit.

Next, the operation of the second embodiment will be described with reference to FIGS. Since the operation is almost the same as that of the first embodiment, only parts different from the first embodiment will be described.
When a small thermal power is set by the user operating the thermal power control volume 11a, the first control circuit 96a starts driving the small thermal power side heating circuit 95a and simultaneously sends a command to the first fan driving circuit 98a. The command in this case is a predetermined fan speed, and this value does not change.
When the temperature information is input from the first temperature detection circuit 97a, the first control circuit 96a calculates the opening degree of the first shielding plate 101a in proportion to the temperature information, and uses the first shielding plate drive circuit as command information. To 111a. When receiving a command from the first control circuit 96a, the first shielding plate driving circuit 111a drives the first shielding plate 101a and controls the opening degree in the closing direction. Thereby, since the intake of outside air is reduced, the air volume is adjusted according to the small heating power.

When a large thermal power is set by the user operating the thermal power operation volume 11b, the second control circuit 96b starts to drive the large thermal power heating circuit 95b and simultaneously sends a command to the second fan drive circuit 98b. The command in this case is a predetermined fan speed, and this value does not change.
When the temperature information is input from the second temperature detection circuit 97b, the second control circuit 96b calculates the opening degree of the second shielding plate 101b proportional to the temperature information, and uses the second shielding plate drive circuit as command information. To 111b. When receiving a command from the second control circuit 96b, the second shielding plate driving circuit 111b drives the second shielding plate 101b and controls the opening degree of the second shielding plate 101b in accordance with the command. Thereby, since the intake of outside air increases, the air volume adjustment according to the large thermal power is performed.
In the above example, the case where the temperature detector is provided in the lower portion of the top plate has been described. However, the temperature detector is not limited to this, and may be anywhere within the range in which the temperature of the container can be measured. For example, you may provide in the upper part of a top plate.

  As described above, according to the second embodiment, since the grill is arranged at the center, it is easy to use regardless of whether the adjacent wall is on the left or right side. In addition, the cooking device increases the corresponding intake air volume when the large IH heating coil is used, and decreases the corresponding intake air volume when the small IH heating coil is used. Can freely select a heating coil with a large heating power or a small heating power according to cooking contents, and can enjoy a comfortable cooking.

Embodiment 3 FIG.
FIG. 12 is a longitudinal sectional view of a cooking device according to Embodiment 3 of the present invention. 12, the configuration is the same as that of FIG. 6 except that wind pressure detectors 121a and 121b are provided around the cooling fan units 25a and 25b. FIG. 13 is a block diagram showing the relationship between the heating circuit of the cooking device and the air volume adjustment in the third embodiment of the present invention.
In FIG. 13, a wind pressure detector 121a is provided on the IH heating coil 22a side instead of the temperature detector 81a, a first wind pressure detection circuit 131a is provided on the IH heating coil 22b side instead of the first temperature detection circuit 97a. The configuration is the same as that of FIG. 9 except that a wind pressure detector 121b is provided instead of the temperature detector 81b and a second wind pressure detection circuit 131b is provided instead of the second temperature detection circuit 97b.

Next, the operation of the third embodiment will be described with reference to FIGS.
The AC voltage from the commercial AC power supply 91 is converted into a DC voltage by a full-wave rectifier 92, a smoothing capacitor 93, and a choke coil 94.
When the user operates the thermal operation volume 11a to set a small thermal power, this signal is input to the first control circuit 96a, and the first control circuit 96a drives the small thermal power heating circuit 95a. . As a result, the DC voltage is converted to AC by the small heating power side heating circuit 95a, and an alternating current based on the voltage corresponding to the small heating power flows through the IH heating coil 22a. As a result, an eddy current corresponding to a small heating power flows through the container placed on the top plate 2, the container is heated, and the contents of the container are cooked. At this time, the wind pressure detector 121a provided around the cooling fan unit 25a detects the wind pressure of the cooling air passing through the air path and outputs a detection signal to the first wind pressure detection circuit 131a. When the detection signal is input from the wind pressure detector 121a, the first wind pressure detection circuit 131a converts the detection signal into wind pressure information and outputs it to the first control circuit 96a. When the wind pressure information is input from the first wind pressure detection circuit 131a, the first control circuit 96a calculates a standard wind pressure based on the thermal power setting information from the thermal power operation volume 11a or associates the thermal power setting information with the optimal wind pressure in advance. By referring to the table, the standard wind pressure is extracted and the wind pressure information input from the first wind pressure detection circuit 131a is compared. Then, a command is issued to the first fan drive circuit 98a so that the wind pressure information becomes the standard wind pressure. That is, if the value of the wind pressure information is higher than the standard wind pressure, the rotational speed of the fan is decreased by a predetermined value. If the value of the wind pressure information is lower than the standard wind pressure, the rotational speed of the fan is increased by a predetermined value, and this rotational speed is increased. The command information is output to the first fan drive circuit 98a. When the first fan drive circuit 98a receives a command from the first control circuit 96a, the first fan drive circuit 98a drives the cooling fan unit 25a in accordance with the command and controls the number of rotations thereof. Thereby, the air volume adjustment according to the small heating power is performed.

  In addition, when the user operates the thermal operation volume 11b and a large thermal power is set, this signal is input to the second control circuit 96b, and the second control circuit 96b controls the small thermal power heating circuit 95b. To drive. As a result, the DC voltage is converted to AC by the heating power large side heating circuit 95b, and an alternating current based on the voltage corresponding to the large heating power flows through the IH heating coil 22b. As a result, an eddy current corresponding to a large heating power flows through the container placed on the top plate 2, the container is heated, and the contents of the container are cooked. At this time, the wind pressure detector 121b provided around the cooling fan unit 25b detects the wind pressure of the cooling air passing through the air path and outputs a detection signal to the second wind pressure detection circuit 131b. When the detection signal is input from the wind pressure detector 121b, the second wind pressure detection circuit 131b converts the detection signal into wind pressure information and outputs the wind pressure information to the second control circuit 96b. When the wind pressure information is input from the second wind pressure detection circuit 131b, the second control circuit 96b calculates a standard wind pressure based on the thermal power setting information from the thermal power operation volume 11b or associates the thermal power setting information with the optimal wind pressure in advance. By referring to the table, the standard wind pressure is extracted and the wind pressure information input from the second wind pressure detection circuit 131b is compared. Then, a command is issued to the second fan drive circuit 98b so that the wind pressure information becomes the standard wind pressure. That is, if the value of the wind pressure information is higher than the standard wind pressure, the rotational speed of the fan is decreased by a predetermined value. If the value of the wind pressure information is lower than the standard wind pressure, the rotational speed of the fan is increased by a predetermined value, and this rotational speed is increased. The command information is output to the second fan drive circuit 98b. When the second fan drive circuit 98b receives a command from the second control circuit 96b, the second fan drive circuit 98b drives the cooling fan unit 25b and controls the number of rotations in accordance with the command. Thereby, the air volume adjustment according to a large thermal power is performed.

  As described above, according to the third embodiment, in addition to the effects of the first embodiment, the heating cooker automatically adjusts the wind pressure to the optimum cooling air volume according to the heating power, so that the accuracy is higher. The air volume can be adjusted.

In the above example, the case where the wind pressure is detected and the cooling air amount is automatically adjusted based on the wind pressure has been described. However, it is needless to say that the present invention is not limited to the wind pressure. For example, the air volume may be detected, and the cooling air volume may be automatically adjusted based on this air volume. In this case, the same effect as described above can be obtained.
Alternatively, the wind speed may be detected, and the cooling air volume may be automatically adjusted based on the wind speed. In this case, the same effect as described above can be obtained.

Embodiment 4 FIG.
FIG. 14 is a longitudinal sectional view of a cooking device according to Embodiment 4 of the present invention. The configuration is the same as that of FIG. 12 except that a first shielding plate 101a and a second shielding plate 101b are respectively added near the intake ports 61a and 61b. Moreover, FIG. 15 is a block diagram which shows the relationship between the heating circuit of a heating cooker, and air volume adjustment in Embodiment 4 of this invention. The configuration is the same as that of FIG. 13 except that a first shielding plate 101a, a second shielding plate 101b, a first shielding plate drive circuit 111a, and a second shielding plate drive circuit 111b are added. The first shielding plate driving circuit 111a and the second shielding plate driving circuit 111b are constituted by a motor and a driving circuit.

Next, the operation of the fourth embodiment will be described with reference to FIGS. Since the operation is almost the same as that of the third embodiment, only parts different from the third embodiment will be described.
When a small thermal power is set by the user operating the thermal power control volume 11a, the first control circuit 96a starts driving the small thermal power side heating circuit 95a and simultaneously sends a command to the first fan driving circuit 98a. The command in this case is a predetermined fan speed, and this value does not change.
When the wind pressure information is input from the first wind pressure detection circuit 131a, the first control circuit 96a calculates a standard wind pressure based on the thermal power setting information from the thermal power operation volume 11a or associates the thermal power setting information with the optimal wind pressure in advance. By referring to the table, the standard wind pressure is extracted and the wind pressure information input from the first wind pressure detection circuit 131a is compared. Then, a command is issued to the first shielding plate driving circuit 111a so that the wind pressure information becomes the standard wind pressure. That is, if the value of the wind pressure information is higher than the standard wind pressure, the opening degree of the first shielding plate 101a is decreased by a predetermined value, and if the value of the wind pressure information is lower than the standard wind pressure, the opening degree of the first shielding plate 101a is reduced. The opening is increased by a predetermined value, and this opening is output as command information to the first shielding plate drive circuit 111a. When receiving a command from the first control circuit 96a, the first shielding plate driving circuit 111a drives the first shielding plate 101a and controls its opening degree. Thereby, the air volume adjustment according to the small heating power is performed.

When a large thermal power is set by the user operating the thermal power operation volume 11b, the second control circuit 96b starts to drive the large thermal power heating circuit 95b and simultaneously sends a command to the second fan drive circuit 98b. The command in this case is a predetermined fan speed, and this value does not change.
When the wind pressure information is input from the second wind pressure detection circuit 131b, the second control circuit 96b calculates a standard wind pressure based on the thermal power setting information from the thermal power operation volume 11b or associates the thermal power setting information with the optimal wind pressure in advance. By referring to the table, the standard wind pressure is extracted and the wind pressure information input from the second wind pressure detection circuit 131b is compared. Then, a command is issued to the second shielding plate driving circuit 111b so that the wind pressure information becomes the standard wind pressure. That is, if the value of the wind pressure information is higher than the standard wind pressure, the opening degree of the second shielding plate 101b is decreased by a predetermined value, and if the value of the wind pressure information is lower than the standard wind pressure, the opening degree of the second shielding plate 101b is reduced. The opening is increased by a predetermined value, and this opening is output as command information to the second shielding plate drive circuit 111b. When the second shield plate drive circuit 111b receives a command from the second control circuit 96b, the second shield plate drive circuit 111b drives the second shield plate 101b and controls its opening degree. Thereby, the air volume adjustment according to a large thermal power is performed.

  As described above, according to the fourth embodiment, since the grill is arranged in the center, it is easy to use regardless of whether the adjacent wall is on the left or right side. In addition, the cooking device increases the corresponding intake air volume when the large IH heating coil is used, and decreases the corresponding intake air volume when the small IH heating coil is used. Can freely select a heating coil with a large heating power or a small heating power according to cooking contents, and can enjoy a comfortable cooking.

In the above example, the case where the wind pressure is detected and the cooling air amount is automatically adjusted based on the wind pressure has been described. However, it is needless to say that the present invention is not limited to the wind pressure. For example, the air volume may be detected, and the cooling air volume may be automatically adjusted based on this air volume. In this case, the same effect as described above can be obtained.
Alternatively, the wind speed may be detected, and the cooling air volume may be automatically adjusted based on the wind speed. In this case, the same effect as described above can be obtained.

Embodiment 5. FIG.
FIG. 16 is a longitudinal sectional view of a cooking device according to Embodiment 5 of the present invention. In FIG. 16, the configuration is the same as that of FIG. 6 except that the current detectors 161a and 161b are provided on the substrates 24a and 24b. FIG. 17 is a block diagram showing the relationship between the heating circuit of the cooking device and the air flow adjustment in the fifth embodiment of the present invention.
In FIG. 17, a current detector 161a is provided on the IH heating coil 22a side instead of the temperature detector 81a, a first current detection circuit 171a is provided on the IH heating coil 22b side instead of the first temperature detection circuit 97a. The configuration is the same as that of FIG. 9 except that a current detector 161b is provided in place of the temperature detector 81b, and a second current detection circuit 171b is provided in place of the second temperature detection circuit 97b.

Next, the operation of the fifth embodiment will be described with reference to FIGS.
The AC voltage from the commercial AC power supply 91 is converted into a DC voltage by a full-wave rectifier 92, a smoothing capacitor 93, and a choke coil 94.
When the user operates the thermal operation volume 11a to set a small thermal power, this signal is input to the first control circuit 96a, and the first control circuit 96a drives the small thermal power heating circuit 95a. . As a result, the DC voltage is converted to AC by the small heating power side heating circuit 95a, and an alternating current based on the voltage corresponding to the small heating power flows through the IH heating coil 22a. As a result, an eddy current corresponding to a small heating power flows through the container placed on the top plate 2, the container is heated, and the contents of the container are cooked. At this time, the current detector 161a provided on the substrate 24a detects the current flowing through the IH heating coil 22a and outputs a detection signal to the first current detection circuit 171a. When the detection signal is input from the current detector 161a, the first current detection circuit 171a converts the detection signal into current information and outputs the current information to the first control circuit 96a. When the first control circuit 96a receives the current information from the first current detection circuit 171a, the first control circuit 96a calculates the number of rotations of the cooling fan proportional to the current information, and outputs it as command information to the first fan drive circuit 98a. When the first fan drive circuit 98a receives a command from the first control circuit 96a, the first fan drive circuit 98a drives the cooling fan unit 25a in accordance with the command and controls the number of rotations thereof. Thereby, the air volume adjustment according to the small heating power is performed.

  When the user operates the thermal operation volume 11b and a large thermal power is set, this signal is input to the second control circuit 96b, and the second control circuit 96b causes the thermal power large-side heating circuit 95b to enter. To drive. As a result, the DC voltage is converted to AC by the heating power large side heating circuit 95b, and an alternating current based on the voltage corresponding to the large heating power flows through the IH heating coil 22b. As a result, an eddy current corresponding to a small heating power flows through the container placed on the top plate 2, the container is heated, and the contents of the container are cooked. At this time, the current detector 161b provided on the substrate 24b detects the current flowing through the IH heating coil 22b and outputs a detection signal to the second current detection circuit 171b. When the second current detection circuit 171b receives a detection signal from the current detector 161b, the second current detection circuit 171b converts the detection signal into current information and outputs the current information to the second control circuit 96b. When the second control circuit 96b receives the current information from the second current detection circuit 171b, the second control circuit 96b calculates the number of rotations of the cooling fan proportional to the current information and outputs it as command information to the second fan drive circuit 98b. When the second fan drive circuit 98b receives a command from the second control circuit 96b, the second fan drive circuit 98b drives the cooling fan unit 25b and controls the number of rotations in accordance with the command. Thereby, the air volume adjustment according to a large thermal power is performed.

  As described above, according to the first embodiment, since the grill is arranged in the center, it is easy to use regardless of whether the adjacent wall is on the left or right side. Further, the heating cooker increases the air volume of the corresponding cooling fan when the large IH heating coil is used, and decreases the air volume of the corresponding cooling fan when the small IH heating coil is used. Therefore, the cooker can freely select a heating coil with a large or small heating power according to the cooking contents, and can enjoy a comfortable cooking, and the optimum cooling air volume according to the heating power is automatically adjusted to save the cooking. Electricity can be planned.

Embodiment 6 FIG.
FIG. 18 is a longitudinal sectional view of a cooking device according to Embodiment 6 of the present invention. The configuration is the same as that of FIG. 16 except that a first shielding plate 101a and a second shielding plate 101b are added near the intake ports 61a and 61b, respectively. FIG. 19 is a block diagram showing the relationship between the heating circuit of the cooking device and the air volume adjustment in the sixth embodiment of the present invention. The configuration is the same as that shown in FIG. 17 except that a first shielding plate 101a, a second shielding plate 101b, a first shielding plate drive circuit 111a, and a second shielding plate drive circuit 111b are added. The first shielding plate driving circuit 111a and the second shielding plate driving circuit 111b are constituted by a motor and a driving circuit.

Next, the operation of the sixth embodiment will be described with reference to FIGS. Since the operation is almost the same as that of the fifth embodiment, only parts different from the fifth embodiment will be described.
When a small thermal power is set by the user operating the thermal power control volume 11a, the first control circuit 96a starts driving the small thermal power side heating circuit 95a and simultaneously sends a command to the first fan driving circuit 98a. The command in this case is a predetermined fan speed, and this value does not change.
When the current information is input from the first current detection circuit 171a, the first control circuit 96a calculates the opening degree of the first shielding plate 101a proportional to the current information, and the first shielding plate drive is used as the command information. Output to the circuit 111a. When receiving a command from the first control circuit 96a, the first shielding plate driving circuit 111a drives the first shielding plate 101a and controls the opening degree in the closing direction. Thereby, since the intake of outside air is reduced, the air volume is adjusted according to the small heating power.

When a large thermal power is set by the user operating the thermal power operation volume 11b, the second control circuit 96b starts to drive the large thermal power heating circuit 95b and simultaneously sends a command to the second fan drive circuit 98b. The command in this case is a predetermined fan speed, and this value does not change.
When the second control circuit 96b receives current information from the second current detection circuit 171b, the second control circuit 96b calculates the opening degree of the second shielding plate 101b proportional to the current information, and uses the second shielding plate drive as command information. Output to the circuit 111b. When receiving a command from the second control circuit 96b, the second shielding plate driving circuit 111b drives the second shielding plate 101b and controls the opening degree of the second shielding plate 101b in accordance with the command. Thereby, since the intake of outside air increases, the air volume adjustment according to the large thermal power is performed.

  As described above, according to the sixth embodiment, since the grill is arranged in the center, it is easy to use regardless of whether the adjacent wall is on the left or right side. In addition, the cooking device increases the corresponding intake air volume when the large IH heating coil is used, and decreases the corresponding intake air volume when the small IH heating coil is used. Can freely select a heating coil with a large heating power or a small heating power according to cooking contents, and can enjoy a comfortable cooking.

It is a perspective view which shows the whole structure of the heating cooker in all the embodiment of this invention. It is a perspective view of the heating cooker which removed a part of top plate and a part of front panel in all the embodiments of this invention. It is a perspective view of the heating cooker which removed the top plate in all the embodiments of this invention. It is a perspective view which shows the structure of the main body of the heating cooker in all embodiment of this invention. It is a top view which shows the structure of the main body of the heating cooker in all embodiment of this invention. It is a longitudinal cross-sectional view (right view) of the heating cooker in all embodiment of this invention. It is AA sectional drawing (plan view) of FIG. It is a longitudinal cross-sectional view (right view) of the heating cooker in Embodiment 1 of this invention. It is a block diagram which shows the relationship between the heating circuit of a heating cooker, and air volume adjustment in Embodiment 1 of this invention. It is a longitudinal cross-sectional view (right view) of the heating cooker in Embodiment 2 of this invention. It is a block diagram which shows the relationship between the heating circuit of a heating cooker, and air volume adjustment in Embodiment 2 of this invention. It is a longitudinal cross-sectional view (right view) of the heating cooker in Embodiment 3 of this invention. It is a block diagram which shows the relationship between the heating circuit of a heating cooker, and air volume adjustment in Embodiment 3 of this invention. It is a longitudinal cross-sectional view (right view) of the heating cooker in Embodiment 4 of this invention. It is a block diagram which shows the relationship between the heating circuit of a cooking-by-heating machine, and air volume adjustment in Embodiment 4 of this invention. It is a longitudinal cross-sectional view (right view) of the heating cooker in Embodiment 5 of this invention. In Embodiment 5 of this invention, it is a block diagram which shows the relationship between the heating circuit of a heating cooker, and air volume adjustment. It is a longitudinal cross-sectional view (right view) of the heating cooker in Embodiment 6 of this invention. It is a block diagram which shows the relationship between the heating circuit of a heating cooker, and air volume adjustment in Embodiment 6 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Main body, 2 Top plate, 3a, 3b IH heating part, 4 Radiant heater, 5 Liquid crystal display part, 6 Exhaust port, 7 Exhaust cover, 8 Frame, 9a, 9b Top key operation part, 10 Grill door, 11a, 11b Operation volume, 12a, 12b Panel, 21 Upper and lower partition plates, 22a, 22b IH heating coil, 23a, b Top panel key board, 24a, 24b Substrate, 25a, 25b Cooling fan unit, 26a, 26b IH cooling duct, 27a 27b Front air intake opening, 31a, 31b Upper unit ventilation opening, 32 Grill exhaust duct, 41 Grill unit, 42a, 42b Grill shielding plate, 43a, 43b Lower cold air flow path, 61a, 61b Air intake opening, 62a, 62b Air flow path cover, 63a, 63b Cooling air outlet holes, 81a, 81b Temperature detector, 91 commercial AC power supply, 92 full-wave rectifier, 93 smoothing capacitor, 94 choke coil, 95a half bridge configuration inverter circuit (thermal power side heating circuit), 95b full bridge configuration inverter circuit (thermal power side heating circuit) ), 96a first control circuit, 96b second control circuit, 97b second temperature detection circuit, 98a first fan drive circuit, 98b second fan drive circuit, 100 heating cooker, 101a first shield Plate, 101b second shielding plate, 111a first shielding plate driving circuit, 111b second shielding plate driving circuit, 121a, 121b wind pressure detector, 131a first wind pressure detection circuit, 131b second wind pressure detection circuit, 161a, 161b current detector, 171a first current detection circuit, 171b second current detection circuit.

Claims (6)

A top plate on which the container is placed;
A main body provided below the top plate;
In a heating cooker including a plurality of IH heating coils provided above the main body and below the top plate,
A detector for detecting the cooking state of the container;
An upper and lower partition plate provided between the top plate and the main body,
The main body includes a grill unit, and a plurality of air passages provided on the left and right sides of the grill unit and having an intake port for sucking outside air forward.
Each of the air passages communicates with the upper part of the upper and lower partition plates at the rearmost part, and further extends to the lower part of the IH coil along the left and right ends of the upper part of the upper and lower partition plates.
A cooling fan unit provided for each air passage;
A heating cooker comprising: a control unit that controls the cooling fan unit so that the air volume changes based on a detection result of the detector. A top plate on which the container is placed;
A main body provided below the top plate;
In a heating cooker including a plurality of IH heating coils provided above the main body and below the top plate,
A detector provided at the top or bottom of the top plate for detecting the cooking state of the container;
An upper and lower partition plate provided between the top plate and the main body,
The main body includes a grill unit, and a plurality of air passages provided on the left and right sides of the grill unit and having an intake port for sucking outside air forward.
Each of the air passages communicates with the upper part of the upper and lower partition plates at the rearmost part, and further extends to the lower part of the IH coil along the left and right ends of the upper part of the upper and lower partition plates.
A cooling fan unit provided for each air passage;
A shielding plate for adjusting the amount of air on the inlet side;
A heating cooker comprising: a control unit that controls the shielding plate so that the air volume changes based on a detection result of the detector.   The cooking device according to claim 1 or 2, wherein the detector is a temperature detector that detects a temperature of the container.   The cooking device according to claim 3, wherein the temperature detector is provided at an upper part or a lower part of the top plate.   The cooking device according to claim 1 or 2, wherein the detector detects a wind pressure, an air volume, or a wind speed of the air passage.   The cooking device according to claim 1 or 2, wherein the detector is a current detector that detects a current flowing through the IH heating coil.

Images