JP2023024610A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood in which the air amount of a fan and the rotational frequency of a filter can follow the generation amount of soot during cooking, and which has improved a use feeling and satisfaction of a user.

SOLUTION: A range hood includes: a temperature sensor 300 for detecting a top surface temperature of a cooking device; a fan 116 for sucking the soot generating above the cooking device and exhausting it to the outside; and a control part 130 for comparing the top surface temperature detected by the temperature sensor 300 with a threshold temperature, and for determining the mode of the air amount of the fan 116 in a stepwise manner. While the air amount of the fan 116 is being shifted to the determined mode, when the control part 130 has determined to shift the air amount of the fan 116 to another mode due to the change of the top surface temperature, the air amount of the fan 116 is shifted to another mode with an increase rate or a decrease rate which is larger than the increase rate or the decrease rate of the air amount of the fan 116 while the air amount of the fan 116 is being shifted to the determined mode.

SELECTED DRAWING: Figure 5

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to range hoods.

Conventionally, a range hood is known that detects the top surface temperature of a cooker with a temperature sensor provided in the range hood and controls the air volume of the range hood in stages based on the detected top surface temperature (Patent Document 1. ). This cooker hood increases the air volume when the detected temperature is equal to or higher than the threshold temperature, and decreases the air volume when the temperature drops below the threshold temperature.

Japanese Unexamined Patent Application Publication No. 2012-32102

However, if the range hood described in Japanese Patent Laid-Open No. 2002-300003 is designed to increase and decrease the air volume step by step, the following problems occur. For example, if the heating power of the cooker is suddenly increased, even if the temperature of the food to be cooked suddenly rises, the air volume will increase in stages. It takes time to reach the air volume of The sudden rise in the temperature of the pan and the food being cooked causes a sudden increase in the oily smoke. If the airflow of the fan cannot keep up with the increase in the oily smoke, it becomes difficult to quickly collect and exhaust the oily smoke, resulting in the oily smoke that cannot be collected. There is a risk of drifting into the room.

In addition, even if the temperature of the food is lowered by rapidly weakening the cooking heat or adding ingredients, the air volume is gradually reduced, so the air volume cannot be reduced to the target air volume at once. . When the temperature of the food drops, the oily smoke decreases rapidly, but if the air volume of the fan does not keep up with the reduction of the oily smoke, the fan will run unnecessarily, consuming more power than necessary and generating noise. do. The same can be said for the number of rotations of the filter that removes the oil contained in the soot.

Therefore, an object of the present invention is to provide a cooker hood that allows the air volume of the fan and the rotation speed of the filter to follow the amount of oily smoke generated during cooking, and that can improve the usability and satisfaction of the user. do.

The cooker hood of the present invention for achieving the above objects includes a temperature sensor for detecting the temperature of the top surface of the cooker, a fan for sucking oily smoke generated above the cooker and exhausting it to the outside, and a temperature sensor for detecting the temperature. a control unit that compares the top surface temperature and the threshold temperature and determines the air volume mode of the fan in stages, and the control unit controls the top surface while shifting the air volume of the fan to the determined mode. When it is decided to shift the fan airflow to another mode due to a change in temperature, the increase or decrease rate of the fan airflow is greater than the rate at which the fan airflow is shifted to the determined mode. Shifts fan airflow to other modes by a rate or rate of decrease.

Another cooker hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of a cooker, a fan for sucking oily smoke generated above the cooker and exhausting it to the outside, and a temperature sensor. a controller that compares the detected top surface temperature with the threshold temperature and determines the air volume mode of the fan in stages, wherein the air volume mode of the fan that is determined in stages by the controller is at least zero or It has three modes: a first mode with the smallest air volume, a second mode with an air volume greater than the air volume in the first mode, and a third mode with an air volume greater than the air volume in the second mode. If the top surface temperature is less than the threshold temperature t0, the air volume mode of the fan is set to the first mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t0 and less than t1, the air volume mode of the fan is set to the second mode. If the detected top surface temperature is equal to or higher than the threshold temperature t1, the air volume mode of the fan is determined to be the third mode. When the top surface temperature reaches or exceeds the threshold temperature t1, the air volume mode of the fan is shifted to the third mode without shifting to the second mode, and the increase rate of the air volume of the fan when shifting to the third mode is It is larger than the increase rate of the air volume of the fan when shifting the air volume of the fan from the first mode to the second mode.

Another cooker hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of a cooker, a fan for sucking oily smoke generated above the cooker and exhausting it to the outside, and a temperature sensor. a controller that compares the detected top surface temperature with the threshold temperature and determines the air volume mode of the fan in stages, wherein the air volume mode of the fan that is determined in stages by the controller is at least zero or It has three modes: a first mode with the smallest air volume, a second mode with an air volume greater than the air volume in the first mode, and a third mode with an air volume greater than the air volume in the second mode. If the top surface temperature is less than the threshold temperature t0, the air volume mode of the fan is set to the first mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t0 and less than t1, the air volume mode of the fan is set to the second mode. is determined, and if the detected top surface temperature is equal to or higher than the threshold temperature t1, the air volume mode of the fan is determined to be the third mode; When the top surface temperature becomes less than the threshold temperature t0, the air volume mode of the fan is shifted to the first mode without shifting to the second mode, and the reduction rate of the air volume of the fan when shifting to the first mode is It is larger than the reduction rate of the air volume of the fan when shifting the air volume of the fan from the third mode to the second mode.

Another cooker hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of the cooker, and a rotating filter for removing oil contained in oil smoke generated above the cooker. and a control unit that compares the top surface temperature detected by the temperature sensor with a threshold temperature and determines the filter rotation speed mode step by step, and the control unit shifts the filter rotation speed to the determined mode. If it is decided to shift the rotation speed of the filter to another mode due to a change in the top surface temperature, the rotation speed of the filter when shifting the rotation speed to the determined mode The number of rotations of the filter is shifted to another mode at a rate of increase or decrease greater than the rate of increase or decrease of the number.

Another cooker hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of the cooker, and a rotating filter for removing oil contained in oil smoke generated above the cooker. and a control unit that compares the top surface temperature detected by the temperature sensor with a threshold temperature and determines the filter rotation speed mode step by step, wherein the filter rotation speed mode is determined step by step by the control unit. has at least three modes: a first mode with zero or the lowest number of revolutions, a second mode with a number of revolutions greater than the number of revolutions in the first mode, and a third mode with a number of revolutions greater than the number of revolutions in the second mode. If the detected top surface temperature is less than the threshold temperature t0, the control unit determines the filter rotation speed mode to the first mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t0 and less than t1 If there is, the filter rotation speed mode is determined to be the second mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t1, the filter rotation speed mode is determined to be the third mode, and the control unit rotates the filter When the top surface temperature becomes equal to or higher than the threshold temperature t1 during operation in the first mode, the filter rotation speed mode is shifted to the third mode without shifting to the second mode, The rate of increase in the rotation speed of the filter when shifting to the third mode is greater than the rate of increase in the rotation speed of the filter when shifting the rotation speed of the filter from the first mode to the second mode.

Another cooker hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of the cooker, and a rotating filter for removing oil contained in oil smoke generated above the cooker. and a control unit that compares the top surface temperature detected by the temperature sensor with a threshold temperature and determines the filter rotation speed mode step by step, wherein the filter rotation speed mode is determined step by step by the control unit. has at least three modes: a first mode with zero or the lowest number of revolutions, a second mode with a number of revolutions greater than the number of revolutions in the first mode, and a third mode with a number of revolutions greater than the number of revolutions in the second mode. If the detected top surface temperature is less than the threshold temperature t0, the control unit determines the filter rotation speed mode to the first mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t0 and less than t1 If there is, the filter rotation speed mode is determined to be the second mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t1, the filter rotation speed mode is determined to be the third mode, and the control unit rotates the filter When the top surface temperature becomes less than the threshold temperature t0 while operating in the third mode, the filter rotation speed mode is shifted to the first mode without shifting to the second mode, The reduction rate of the filter rotation speed when shifting to the first mode is greater than the reduction rate of the filter rotation speed when shifting the filter rotation speed from the third mode to the second mode.

Another range hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of the cooker, a fan for sucking oily smoke generated above the cooker and exhausting it to the outside, and The filter rotates to remove the oil contained in the soot generated above, and the top surface temperature detected by the temperature sensor is compared with the threshold temperature to determine the fan air volume and filter rotation speed mode step by step. and a control unit, wherein the control unit shifts the fan air volume and the rotation speed of the filter to another mode by changing the top surface temperature while shifting the fan air volume and the rotation speed of the filter to the determined mode. When it is decided to shift the rotation speed of the filter, the rate of increase or decrease in the rotation speed of the fan and the rotation speed of the filter is larger than the rate of increase or decrease when the rotation speed of the fan and the rotation speed of the filter are shifted to the determined mode. Alternatively, the air volume of the fan and the rotational speed of the filter are shifted to another mode at a decreasing rate.

Another range hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of the cooker, a fan for sucking oily smoke generated above the cooker and exhausting it to the outside, and The filter rotates to remove the oil contained in the soot generated above, and the top surface temperature detected by the temperature sensor is compared with the threshold temperature to determine the fan air volume and filter rotation speed mode step by step. and a controller, wherein the air volume modes of the fan determined stepwise by the controller are at least a first mode with zero or the smallest air volume, a second mode with an air volume greater than that of the first mode, and a second mode with an air volume greater than that of the first mode. It has three modes, a third mode with an air volume larger than the air volume of the two modes, and the filter rotation speed mode determined stepwise by the control unit is at least a fourth mode with zero or the lowest rotation speed, a It has three modes: a fifth mode with a rotation speed higher than the rotation speed of the four modes, and a sixth mode with a rotation speed higher than the rotation speed in the fifth mode. If the temperature is less than t0, the air volume mode of the fan is determined to be the first mode, and if the detected top surface temperature is not less than the threshold temperature t0 and less than t1, the air volume mode of the fan is determined to be the second mode. If the top surface temperature is equal to or higher than the threshold temperature t1, the control unit determines the air volume mode of the fan to be the third mode. The fourth mode is determined, and if the detected top surface temperature is equal to or higher than the threshold temperature t0 and less than t1, the filter rotation speed mode is determined to be the fifth mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t1 If the filter rotation speed mode is determined to be the sixth mode, and the control unit operates the fan air volume mode in the first mode and the filter rotation speed mode in the fourth mode, the top surface When the temperature becomes equal to or higher than the threshold temperature t1, the air volume mode of the fan is changed to the third mode without changing the air volume mode of the fan to the second mode and the rotational speed mode of the filter to the fifth mode, And the air volume of the fan and the air volume of the filter when the mode of the rotational speed of the filter is shifted to the sixth mode, the mode of the air volume of the fan is shifted to the third mode, and the mode of the rotational speed of the filter is shifted to the sixth mode. The rate of increase in the rotation speed is the air volume and flow rate of the fan when the mode of the air volume of the fan is changed from the first mode to the second mode, and the mode of the rotation speed of the filter is changed from the fourth mode to the fifth mode. greater than the rate of increase in filter rotation speed.

Another range hood of the present invention for achieving the above object comprises a temperature sensor for detecting the temperature of the top surface of the cooker, a fan for sucking oily smoke generated above the cooker and exhausting it to the outside, and The filter rotates to remove the oil contained in the soot generated above, and the top surface temperature detected by the temperature sensor is compared with the threshold temperature to determine the fan air volume and filter rotation speed mode step by step. and a controller, wherein the air volume modes of the fan determined stepwise by the controller are at least a first mode with zero or the smallest air volume, a second mode with an air volume greater than that of the first mode, and a second mode with an air volume greater than that of the first mode. It has three modes, a third mode with an air volume larger than the air volume of the two modes, and the filter rotation speed mode determined stepwise by the control unit is at least a fourth mode with zero or the lowest rotation speed, a It has three modes: a fifth mode with a rotation speed higher than the rotation speed of the four modes, and a sixth mode with a rotation speed higher than the rotation speed in the fifth mode. If the temperature is less than t0, the air volume mode of the fan is determined to be the first mode, and if the detected top surface temperature is not less than the threshold temperature t0 and less than t1, the air volume mode of the fan is determined to be the second mode. If the top surface temperature is equal to or higher than the threshold temperature t1, the control unit determines the air volume mode of the fan to be the third mode. The fourth mode is determined, and if the detected top surface temperature is equal to or higher than the threshold temperature t0 and less than t1, the filter rotation speed mode is determined to be the fifth mode, and if the detected top surface temperature is equal to or higher than the threshold temperature t1 For example, when the mode of the rotation speed of the filter is determined to be the sixth mode, and the control unit operates the mode of the air volume of the fan in the third mode and the mode of the rotation speed of the filter in the sixth mode, the top surface When the temperature becomes less than the threshold temperature t0, the air volume mode of the fan is changed to the first mode without changing the air volume mode of the fan to the second mode and the rotational speed mode of the filter to the fifth mode, and the air volume of the fan and the air volume of the filter when the mode of the rotational speed of the filter is shifted to the fourth mode, the mode of the air volume of the fan is shifted to the first mode, and the mode of the rotational speed of the filter is shifted to the fourth mode. The reduction rate of the rotation speed is the air volume and flow rate of the fan when the mode of the air volume of the fan is changed from the third mode to the second mode, and the mode of the rotation speed of the filter is changed from the sixth mode to the fifth mode. greater than the reduction rate of the filter rotation speed.

According to the present invention, the air volume of the fan and the number of revolutions of the filter can follow the amount of oily smoke generated during cooking, so that the usability and satisfaction of the user can be improved.

It is a front view at the time of installing the range hood concerning embodiment in a kitchen. It is a side view at the time of installing the range hood concerning embodiment in a kitchen. It is a front view of the operation panel with which the cooker hood concerning embodiment is provided. It is a figure which shows typically the detection state of the top surface temperature of a cooker by a temperature sensor. It is a block diagram of the control system of the cooker hood according to the embodiment. It is an operation flowchart of the cooker hood concerning an embodiment. FIG. 4 is a diagram showing a mode transition state (aspect 1) of air volume of the fan in the cooker hood of the first embodiment; It is a figure which shows the transition state of the mode of the air volume of the fan in the conventional range hood. FIG. 4 is a diagram showing a mode transition state (aspect 2) of air volume of the fan in the cooker hood of the first embodiment; It is a figure which shows the transition state of the mode of the air volume of the fan in the conventional range hood. FIG. 10 is a diagram showing a transition state (aspect 3) of the rotation speed mode of the filter in the cooker hood of Embodiment 1; It is a figure which shows the transition state of the rotation speed mode of the filter in the conventional cooker hood. It is a figure which shows the transition state (aspect 4) of the rotation speed mode of the filter in the cooker hood of Embodiment 1. FIG. It is a figure which shows the transition state of the rotation speed mode of the filter in the conventional cooker hood. FIG. 10 is a diagram showing a transition state (aspect 5) of the air volume mode of the fan and the rotational speed mode of the filter in the range hood of the first embodiment; FIG. 10 is a diagram showing a transition state (aspect 6) of the air volume mode of the fan and the rotational speed mode of the filter in the range hood of Embodiment 1; FIG. 10 is a diagram showing a mode transition state (aspect 7) of air volume of the fan in the cooker hood of the second embodiment; FIG. 10 is a diagram showing a mode transition state (aspect 8) of air volume of the fan in the cooker hood of the second embodiment; It is a figure which shows the transition state (aspect 9) of the rotation speed mode of the filter in the cooker hood of Embodiment 2. FIG. It is a figure which shows the transition state (aspect 10) of the rotation speed mode of the filter in the cooker hood of Embodiment 2. FIG. FIG. 10 is a diagram showing a transition state (aspect 11) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of Embodiment 2; FIG. 10 is a diagram showing a transition state (aspect 12) of the air volume mode of the fan and the rotational speed mode of the filter in the range hood of Embodiment 2; FIG. 12 is a diagram showing a mode transition state (aspect 13) of air volume of the fan in the cooker hood of Embodiment 3; FIG. 11 is a diagram showing a mode transition state (aspect 14) of air volume of the fan in the cooker hood of Embodiment 3; It is a figure which shows the transition state (aspect 15) of the rotation speed mode of the filter in the cooker hood of Embodiment 3. FIG. It is a figure which shows the transition state (aspect 16) of the rotation speed mode of the filter in the cooker hood of Embodiment 3. FIG. FIG. 10 is a diagram showing a transition state (aspect 17) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of Embodiment 3; FIG. 10 is a diagram showing a transition state (aspect 18) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of Embodiment 3; It is a figure which shows the transition state of the mode of the air volume of the fan in the conventional range hood. FIG. 10 is a diagram showing a modification of the mode transition state (aspect 1) of the air volume of the fan in the cooker hood of the first embodiment; FIG. 12 is a diagram showing a mode transition state (aspect 19) of the air volume of the fan in the range hood of Embodiment 4; FIG. 10 is a diagram showing a modification of the air volume mode transition state (mode 7) of the fan in the cooker hood of the second embodiment. FIG. 12 is a diagram showing a mode transition state (aspect 20) of air volume of the fan in the cooker hood of Embodiment 4;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail by dividing them into [Embodiment 1] to [Embodiment 3] with reference to the drawings. However, the invention is not limited to only the following embodiments. In addition, each drawing is exaggerated and expressed for convenience of explanation. Therefore, the dimensional ratio of each component in each drawing differs from the actual one. In the drawings, the same elements are denoted by the same reference numerals, and duplicate descriptions are omitted in the specification.

(Range hood configuration)
FIG. 1 is a front view when a range hood according to an embodiment (embodiments 1 to 3) is installed in a kitchen. Moreover, FIG. 2 is a side view at the time of installing the range hood concerning embodiment in a kitchen.

As shown in FIGS. 1 and 2 , the range hood 100 according to the embodiment is installed above a cooker 200 . The cooker hood 100 sucks in odors, smoke, oil-containing odors and greasy smoke generated during cooking in the cooker 200 and exhausts them to the outside. Note that the illustrated cooker 200 has three heat sources 210 (a generic term for the three heat sources) and a grill outlet 220 . In this specification, the cooker 200 may be either a gas cooker or an IH cooker, and the heat source is a burner for a gas cooker, a heater for an IH cooker, each mean.

The cooker hood 100 has a temperature sensor 300 for detecting the temperature of the top surface of the cooker 200 on the lower surface on the left front side of the central portion. The temperature sensor 300 detects the temperature of the area indicated by the dotted line in the drawing. The temperature sensor 300 may be a monocular temperature sensor or a compound eye temperature sensor. In the case of the compound eye temperature sensor, for example, a compound eye temperature sensor formed from 8×8=64 pixels is used. Therefore, in the case of the monocular temperature sensor, the average temperature of the top surface of cooking appliance 200 is detected. On the other hand, the compound eye temperature sensor detects the temperature of the top surface of the cooker 200 for each of 64 areas. Detection of the top surface temperature by the compound eye temperature sensor will be described later in detail.

The range hood 100 has an exhaust section 110 at its upper portion. The exhaust part 110 exhausts odors and greasy smoke from the cooker 200 . The exhaust part 110 has an intake port 112 for sucking the greasy smoke generated above the cooker 200, an exhaust port 114 communicating with the outside, and a passage connecting the intake port 112 and the exhaust port 114 to exhaust the greasy smoke sucked from the intake port 112. A fan 116 is provided to exhaust air to the port 114 . Fan 116 is driven by fan motor 117 . A rotating filter (disk) 118 is provided between the intake port 112 and the fan 116 to remove oil from the soot sucked through the intake port 112 . Filter 118 is driven by filter motor 119 . Note that when the fan 116 rotates, the filter 118 also rotates. In addition, it may be equipped with a fixed (ordinary) filter that does not rotate, or it may be a filterless range hood.

The range hood 100 has an operation panel 120 for instructing the operation of the range hood 100 on its upper front side.

FIG. 3 is a front view of the operation panel 120 included in the cooker hood 100 according to the embodiment. The operation panel 120 has an operation switch 121 , an air volume switch 122 , an automatic air volume switch 123 , a timer switch 124 , a lighting switch 125 and a constant ventilation switch 126 .

The operation switch 121 is a switch for operating the range hood 100 . The air volume switch 122 is a switch for manually switching the air volume of the fan 116 between weak, medium and strong. The automatic air volume switch 123 is a switch for automatically switching the air volume of the fan 116 and the rotational speed of the filter 118 according to the temperature of the top surface of the cooker 200 detected by the temperature sensor 300. . The timer switch 124 is a switch for setting the time to rotate the fan 116 after cooking is finished. The illumination switch 125 is a switch for turning on/off the LED light bulb that illuminates the upper surface of the cooker 200 . The constant ventilation switch 126 is a switch for operating/stopping constant ventilation by manually rotating/stopping the fan 116 .

FIG. 4 is a diagram schematically showing how the temperature sensor 300 detects the temperature of the top surface of the cooker 200. As shown in FIG. As described above, the temperature sensor 300 is attached to the lower surface of the range hood 100, so the temperature of the top surface of the cooker 200 is detected by the heat sources (burners or heaters) 210A, 210B, and 210C of the cooker 200 and the outlets of the grill. 220 is detected. When temperature sensor 300 is a monocular temperature sensor, the top surface temperature of cooker 200 is detected as an average value. On the other hand, when the temperature sensor 300 is a compound eye temperature sensor, the top surface temperature of the cooker 200 is, for example, divided into 8×8=64 pixels (Tij (i=1 to 8, j=1 to 8)). In this embodiment, a 64-pixel compound eye temperature sensor is exemplified, but the number of pixels may be smaller or larger than this.

FIG. 5 is a block diagram of the control system of the cooker hood 100 according to the embodiment. Range hood 100 has fan 116 , fan motor 117 , filter 118 , filter motor 119 , operation panel 120 , controller 130 , and temperature sensor 300 . Note that the control unit 130 includes a threshold temperature storage unit 135 and is built into the range hood 100 .

The configurations and functions of fan 116, fan motor 117, filter 118, filter motor 119, operation panel 120, and temperature sensor 300 are as described above.

The control unit 130 compares the top surface temperature detected by the temperature sensor 300 with the threshold temperature to determine the air volume mode of the fan 116 . Further, the control unit 130 compares the top surface temperature detected by the temperature sensor 300 with the threshold temperature to determine the rotation speed mode of the filter 118 . Note that the control unit 130 determines only the air volume mode of the fan 116 in the case of a filterless range hood that does not include the filter 118 or a range hood that includes a fixed filter. In addition, in the case of a range hood equipped with a disk-type filter 118, the control unit 130 determines the rotational speed mode of the filter 118, or the air volume mode of the fan 116 and the rotational speed mode of the filter 118.

The control unit 130 has the following three modes as the air volume mode of the fan 116 and the rotational speed mode of the filter 118, respectively.

The control unit 130 sets the air volume mode of the fan 116 to at least a first mode (for example, "weak") with zero or the smallest air volume and a second mode (for example, "medium") with an air volume greater than that of the first mode. , and a third mode (for example, "strong") with an air volume larger than that of the second mode. The air volume mode of the fan 116 rises or falls stepwise from the first mode to the third mode.

Control unit 130 selects at least a first mode (for example, "low") of zero or the lowest number of rotations as the mode of number of rotations of filter 118, and a second mode (for example, "medium"), and a third mode (for example, "high") with a higher rotational speed than the second mode. The rotation speed mode of the filter 118 rises or falls stepwise from the first mode to the third mode.

In this embodiment, three modes of the first to third modes are exemplified as the mode of the air volume of the fan 116 and the mode of the rotation speed of the filter 118; It may have a mode.

The threshold temperature storage unit 135 included in the control unit 130 increases the air volume of the fan 116 from the first mode (for example, “weak”) to the second mode (for example, “medium”), or increases the air volume from the second mode (for example, “medium”) to Threshold temperature t0 (° C.) for decreasing to the first mode (for example, “weak”), increasing the air volume of the fan 116 from the second mode (for example, “medium”) to the third mode (for example, “strong”), or A threshold temperature t1 (° C.) for decreasing from the 3rd mode (eg “strong”) to the second mode (eg “medium”) is stored. In addition, the threshold temperature storage unit 135 increases the rotation speed of the filter 118 from the first mode (eg, “low”) to the second mode (eg, “medium”) or from the second mode (eg, “medium”) to the first mode. Threshold temperature t0 (° C.) for decreasing mode (eg, “low”), increasing the rotation speed of filter 118 from the second mode (eg, “medium”) to the third mode (eg, “high”), or Store a threshold temperature t1 (°C) for decreasing from a mode (eg "high") to a second mode (eg "medium"). Note that the threshold temperature t0 (° C.) for increasing the air volume of the fan 116 from the first mode (for example, “weak”) to the second mode (for example, “medium”) and the second mode (for example, “medium”) to the second mode The threshold temperature t0 (° C.) for decreasing to one mode (for example, “weak”) may be the same temperature or different temperatures. The same applies to the threshold temperature t0 (° C.) for determining the rotational speed of the filter 118. Further, the threshold temperature t0 (° C.) for determining the air volume of the fan 116 and the threshold temperature t0 (° C.) for determining the rotational speed of the filter 118 may be the same temperature, or may be different temperatures. It can be. The same applies to the threshold temperature t1 (° C.) for determining the air volume of the fan 116 and the rotational speed of the filter 118.

Therefore, if the detected top surface temperature is less than the threshold temperature t0 (° C.), control unit 130 sets the air volume of fan 116 to the first mode (for example, “weak”), and the detected top surface temperature is set to the threshold temperature. If the temperature is t0 (° C.) or more and less than t1 (° C.), the air volume of the fan 116 is determined to be the second mode (for example, “medium”), and if the detected top surface temperature is the threshold temperature t1 (° C.) or more, the fan 116 is determined to be the third mode (for example, "strong"). If the detected top surface temperature is less than the threshold temperature t0 (° C.), control unit 130 sets the rotation speed of filter 118 to the first mode (for example, “low”). If the threshold temperature t0 (° C.) or more and less than t1 (° C.), the rotation speed of the filter 118 is determined to the second mode (for example, “medium”), and if the detected top surface temperature is the threshold temperature t1 (° C.) or more If so, the rotation speed of filter 118 is set to the third mode (for example, "high").

Furthermore, when the air volume of fan 116 is shifted to the determined mode (for example, from the first mode to the second mode), control unit 130 switches to another mode (for example, When the decision is made to shift the airflow of the fan 116 to the third mode), shift the airflow of the fan 116 to another mode (e.g., immediately to the third mode, or to the second mode and then to the third mode). Let In addition, when the rotation speed of the filter 118 is shifted to the determined mode (for example, from the first mode to the second mode), the control unit 130 further changes the top surface temperature to another mode ( When a decision is made to transition the rotational speed of the filter 118 to the third mode, for example, the rotational speed of the filter 118 is shifted to another mode, for example immediately to the third mode, or to the second mode followed by the third mode. to). This is also the case when the controller 130 controls the rotation speed of the filter 118 .

Further, for example, when the air volume mode of the fan 116 is set to the first mode, the control unit 130 changes the air volume mode of the fan 116 to the second mode when the top surface temperature becomes equal to or higher than the threshold temperature t1. to shift to the third mode without shifting to . This is also the case when the controller 130 controls the rotation speed of the filter 118 .

(Operation of control unit 130)
FIG. 6 is an operation flowchart of the cooker hood 100 according to the embodiment. This operation flowchart is processed by the control unit 130 . This operation flowchart is executed when the air volume automatic switch 123 of the operation panel 120 (see FIGS. 3 and 5) is selected.

Control unit 130 detects the top surface temperature of cooker 200 with temperature sensor 300 (S100). Next, control unit 130 compares the detected top surface temperature of cooker 200 with threshold temperatures (t0, t1) stored in threshold temperature storage unit 135 (S110). Next, control unit 130 controls the air volume of fan 116 and/or the rotational speed of filter 118 according to the comparison result between the top surface temperature and the threshold temperature (S120).

[Embodiment 1]
The general operation of the control unit 130 is as described above. Next, when the control unit 130 determines to shift the air volume of the fan 116 to another mode due to a change in the top surface temperature while shifting the air volume of the fan 116 to the determined mode, A mode of immediately shifting the air volume of the fan 116 to another mode will be described. Specifically, the operation of the control unit 130 when changing the air volume mode of the fan 116 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) will be divided into aspect 1 and aspect 2 and detailed explain.

(For fan air volume)
<Operation of Aspect 1>
FIG. 7 is a diagram showing transition states (aspect 1) of air volume modes of the fan in the cooker hood of the first embodiment. Further, FIG. 8 is a diagram showing transition states of air volume modes of a fan in a conventional range hood.

In mode 1, when the top surface temperature becomes equal to or higher than the threshold temperature t1 (° C.) while the air volume mode of the fan 116 is being shifted from the first mode to the second mode, the air volume mode of the fan 116 is immediately changed. It is shifted to the third mode.

As shown in FIG. 7, while the control unit 130 is operating the fan 116 in the first mode, when the top surface temperature reaches t0 (° C.) or higher, the control unit 130 issues a shift command to the second mode. out. Control unit 130 shifts the operation of fan 116 to the second mode in response to this transition command. During the transition to the second mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode, if the top surface temperature further reaches t1 (° C.) or higher, the control unit 130 causes the fan 116 to immediately shifts the air volume mode to the third mode.

At this time, as shown in FIG. 7, the control unit 130 increases the rate of increase in the air volume per unit time from the first mode toward the second mode after the transition command to shift to the third mode is issued. It is made larger than the rate of increase of the air volume per unit time.

On the other hand, conventionally, as shown in FIG. 8, even if a shift command to the third mode is issued during the shift to the second mode, the air volume mode of the fan 116 is immediately shifted to the third mode. First, after the air volume of the fan 116 in the second mode is reached, the mode is shifted to the third mode. Conventionally, as shown in FIG. 8, the rate of increase in air volume when shifting from the first mode to the second mode is the same as the rate of increase in air volume when shifting from the second mode to the third mode. there is

Therefore, according to aspect 1, even when the top surface temperature rises rapidly during cooking and a large amount of oily smoke is generated, the oily smoke can be efficiently exhausted, and the usability and satisfaction of the user are improved. be able to. Specifically, it is possible to quickly collect and exhaust the oily smoke that rapidly increases due to a sudden rise in the temperature of the pot or the food to be cooked. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

<Operation of Aspect 2>
FIG. 9 is a diagram showing a mode transition state (aspect 2) of the air volume of the fan in the range hood of the first embodiment. Further, FIG. 10 is a diagram showing transition states of air volume modes of a fan in a conventional range hood.

In mode 2, when the top surface temperature becomes less than the threshold temperature t0 (° C.) while the air volume mode of the fan 116 is being shifted from the third mode to the second mode, the air volume mode of the fan 116 is immediately changed. It is shifted to the first mode.

As shown in FIG. 9, when control unit 130 is operating fan 116 in the third mode and the top surface temperature reaches t0 (° C.) or more and less than t1 (° C.), control unit 130 switches to the second mode. Issue a mode transition command. Control unit 130 shifts the operation of fan 116 to the second mode in response to this transition command. During the transition to the second mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode, and the top surface temperature becomes less than t0 (° C.), the control unit 130 causes the fan 116 to air volume mode immediately shifts to the first mode.

At this time, as shown in FIG. 9, the control unit 130 decreases the rate of decrease in the air volume per unit time from the third mode to the second mode after the transition command to shift to the first mode is issued. It is made larger than the rate of decrease per unit time of the air volume.

On the other hand, conventionally, as shown in FIG. 10, even if a command to shift to the first mode is issued during the shift to the second mode, the air volume mode of the fan 116 is immediately shifted to the first mode. First, after reaching the air volume of the fan 116 in the second mode, the mode is shifted to the first mode. Conventionally, as shown in FIG. 10, the reduction rate of the air volume when shifting from the third mode to the second mode is the same as the reduction rate of the air volume when shifting from the second mode to the first mode.

Therefore, according to aspect 2, even if the temperature of the top surface drops sharply during cooking and the amount of oily smoke decreases, the fan 116 does not rotate unnecessarily. noise can be suppressed. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

Next, when the control unit 130 shifts the rotation speed of the filter 118 to the determined mode, it is determined to shift the rotation speed of the filter 118 to another mode due to the change in the top surface temperature. In some cases, a manner in which the rotation speed of the filter 118 is immediately transferred to another mode will be described. Specifically, the operation of the control unit 130 when changing the rotation speed mode of the filter 118 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) is divided into aspects 3 and 4, and the details to explain.

(In the case of filter rotation speed)
<Operation of Aspect 3>
11 : is a figure which shows the transition state (aspect 3) of the rotation speed mode of the filter in the cooker hood of Embodiment 1. FIG. FIG. 12 is a diagram showing transition states of the rotation speed mode of the filter in the conventional cooker hood.

In mode 3, when the top surface temperature becomes equal to or higher than the threshold temperature t1 (° C.) while the rotational speed mode of the filter 118 is being shifted from the first mode to the second mode, the rotational speed mode of the filter 118 is changed to It immediately shifts to the third mode.

As shown in FIG. 11, while the control unit 130 is operating the filter 118 in the first mode, when the top surface temperature reaches t0 (° C.) or higher, the control unit 130 issues a shift command to the second mode. out. Control unit 130 shifts the operation of filter 118 to the second mode in response to this transition command. During transition to the second mode, that is, before the rotation speed of the filter 118 reaches the rotation speed of the filter 118 in the second mode, if the top surface temperature becomes t1 (° C.) or more, the control unit 130 The rotational speed mode of the filter 118 is immediately shifted to the third mode.

At this time, as shown in FIG. 11, the control unit 130 increases the rate of increase in the number of rotations per unit time from the first mode toward the second mode after the transition command to shift to the third mode is issued. It is made larger than the rate of increase per unit time of the number of rotations to be made.

On the other hand, conventionally, as shown in FIG. 12, even if a shift command to the third mode is issued during the shift to the second mode, the rotation speed mode of the filter 118 is immediately shifted to the third mode. After reaching the number of revolutions of the filter 118 in the second mode, the mode is shifted to the third mode. Conventionally, as shown in FIG. 12, the rate of increase in the number of revolutions when shifting from the first mode to the second mode is the same as the rate of increase in the number of revolutions when shifting from the second mode to the third mode. be.

Therefore, according to aspect 3, even when the temperature of the top surface rises rapidly during cooking and a large amount of soot is generated, it is possible to efficiently remove the oil contained in the soot. Specifically, it is possible to rapidly remove the oil contained in the oily smoke that rapidly increases due to a sudden rise in the temperature of the pan or food to be cooked. Also, the amount of oil that enters the upstream side of the filter 118 can be suppressed, and the upstream side of the filter 118 can be cleaned better. Note that the air volume mode of the fan may be switched along with the mode switching of the filter, or the fan may be controlled separately.

<Operation of Aspect 4>
13 : is a figure which shows the transition state (aspect 4) of the rotation speed mode of the filter in the cooker hood of Embodiment 1. FIG. Further, FIG. 14 is a diagram showing transition states of the rotation speed mode of the filter in the conventional cooker hood.

In mode 4, when the top surface temperature becomes less than the threshold temperature t0 (° C.) while the rotation speed mode of the filter 118 is being shifted from the third mode to the second mode, the rotation speed mode of the filter 118 is changed to It immediately shifts to the first mode.

As shown in FIG. 13, when the control unit 130 is operating the filter 118 in the third mode, when the top surface temperature reaches t0 (° C.) or more and less than t1 (° C.), the control unit 130 switches to the second Issue a mode transition command. Control unit 130 shifts the operation of filter 118 to the second mode in response to this transition command. During the transition to the second mode, that is, before the rotational speed of the filter 118 reaches the rotational speed of the filter 118 in the second mode, and the top surface temperature becomes less than t0 (° C.), the control unit 130 The rotational speed mode of the filter 118 is immediately shifted to the first mode.

At this time, as shown in FIG. 13, the control unit 130 decreases the reduction rate of the rotation speed per unit time from the third mode toward the second mode after the transition command to shift to the first mode is issued. It is made larger than the rate of decrease per unit time of the number of rotations to be made.

On the other hand, conventionally, as shown in FIG. 14, even if a command to shift to the first mode is issued during the transition to the second mode, the rotational speed mode of the filter 118 is immediately shifted to the first mode. After reaching the number of revolutions of the filter 118 in the second mode, the mode is shifted to the first mode. Conventionally, as shown in FIG. 14, the reduction rate of the rotation speed when shifting from the third mode to the second mode is the same as the reduction rate of the rotation speed when shifting from the second mode to the first mode. be.

Therefore, according to mode 4, even when the temperature of the top surface drops sharply during cooking and the amount of oily smoke decreases, the filter 118 does not rotate unnecessarily. noise can be suppressed. Note that the air volume mode of the fan may be switched along with the mode switching of the filter, or the fan may be controlled separately.

Next, when the control unit 130 shifts the air volume of the fan 116 and the rotation speed of the filter 118 to the determined mode, the change in the top surface temperature causes the air volume of the fan 116 and the filter 118 to change to another mode. A mode will be described in which the air volume of the fan 116 and the rotation speed of the filter 118 are immediately shifted to another mode when it is decided to shift the rotation speed of the fan 118 . Specifically, the operation of the control unit 130 when simultaneously changing the air volume mode of the fan 116 and the rotation speed mode of the filter 118 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) is described as a mode. 5 and mode 6 will be separately described in detail.

(In the case of fan air volume and filter rotation speed)
FIG. 15 is a diagram showing transition states (aspect 5) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of the first embodiment.

<Operation of Aspect 5>
In aspect 5, the top surface temperature becomes equal to or higher than the threshold temperature t1 (° C.), the air volume mode of the fan 116 is immediately shifted to the third mode, and the rotational speed mode of the filter 118 is immediately shifted to the sixth mode.

As shown in FIG. 15, when the control unit 130 is operating the fan 116 in the first mode and the filter 118 in the fourth mode, when the top surface temperature reaches t0 (° C.) or higher, the control unit 130 issues a transition command to the second mode and the fifth mode. Control unit 130 shifts the operation of fan 116 to the second mode and the operation of filter 118 to the fifth mode according to this transition command. While shifting to the second mode and the fifth mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode and the rotation speed of the filter 118 reaches the rotation speed of the filter 118 in the fifth mode, Furthermore, when the top surface temperature reaches t1 (° C.) or more, the control unit 130 immediately shifts the air volume mode of the fan 116 to the third mode and the rotational speed mode of the filter 118 to the sixth mode. .

At this time, as shown in FIG. 15, the control unit 130 controls the air volume of the fan 116 after the shift command to shift to the third mode is issued, and the air volume of the filter 118 after the shift command to shift to the sixth mode is issued. The rate of increase in rotation speed per unit time is the air volume that increases the air volume of the fan 116 from the first mode to the second mode, and the rotation that increases the rotation speed of the filter 118 from the fourth mode to the fifth mode. It is larger than the increase rate per unit time of the number.

Therefore, according to aspect 5, even when the top surface temperature rises rapidly during cooking and a large amount of oily smoke is generated, the oily smoke can be efficiently exhausted and the oil contained in the oily smoke can be efficiently removed. Also, the amount of oil that enters the upstream side of the filter 118 can be suppressed, and the upstream side of the filter 118 can be cleaned better.

<Operation of Aspect 6>
FIG. 16 is a diagram showing a mode transition state (aspect 6) of the air volume of the fan and the rotational speed of the filter in the cooker hood of the first embodiment.

In mode 6, the top surface temperature becomes less than the threshold temperature t0 (° C.), the air volume mode of the fan 116 is immediately shifted to the first mode, and the rotational speed mode of the filter 118 is immediately shifted to the fourth mode.

As shown in FIG. 16, when the control unit 130 is operating the fan 116 in the third mode and the filter 118 in the sixth mode, the top surface temperature is equal to or higher than t0 (° C.) and lower than t1 (° C.) Then, the control unit 130 issues a transition command to the second mode and the fifth mode. Control unit 130 shifts the operation of fan 116 to the second mode and the operation of filter 118 to the fifth mode according to this transition command. While shifting to the second mode and the fifth mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode and the rotation speed of the filter 118 reaches the rotation speed of the filter 118 in the fifth mode, Furthermore, when the top surface temperature falls below t0 (°C), the control unit 130 immediately shifts the air volume mode of the fan 116 to the first mode and the rotation speed mode of the filter 118 to the fourth mode. .

At this time, as shown in FIG. 16, the control unit 130 controls the air volume of the fan 116 after the shift command to shift to the first mode is issued, and the air volume of the filter 118 after the shift command to shift to the fourth mode is issued. The reduction rate per unit time of the rotation speed is the air volume that decreases the air volume of the fan 116 from the third mode to the second mode, and the rotation that decreases the rotation speed of the filter 118 from the sixth mode to the fifth mode. It is larger than the reduction rate per unit time of the number.

Therefore, according to aspect 6, even if the temperature of the top surface drops sharply during cooking and the amount of oily smoke decreases, the fan 116 and the filter 118 do not rotate unnecessarily, so that the fan 116 and the filter 118 save energy. Also, the noise of fan 116 and filter 118 can be suppressed.

According to Aspects 1 to 6 described above, even when the temperature of the top surface rises and/or drops sharply during cooking, it is possible to efficiently exhaust the oily smoke and/or remove the oil contained in the oily smoke. Also, it is possible to realize energy saving of the fan 116 and/or the filter 118 and suppress noise.

In mode 1 to mode 6 shown in the first embodiment above, if a decision to shift to another mode is made while shifting to the determined mode, the mode is immediately shifted to another mode. Next, in mode 7 to mode 12 which will be described as the second embodiment, when it is determined to move to another mode while shifting to the determined mode, the mode is shifted to the determined mode and then to another mode. are migrating.

[Embodiment 2]
Next, when the control unit 130 determines to shift the air volume of the fan 116 to another mode due to a change in the top surface temperature while shifting the air volume of the fan 116 to the determined mode, A mode of shifting to another mode after shifting to the mode in which the air volume of the fan 116 is determined will be described. Specifically, the operation of the control unit 130 when changing the air volume mode of the fan 116 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) will be described separately for mode 7 and mode 8. .

(For fan air volume)
<Operation of Aspect 7>
FIG. 17 is a diagram showing transition states (aspect 1) of air volume modes of the fan in the cooker hood of the second embodiment.

In mode 7, when the top surface temperature reaches or exceeds the threshold temperature t1 (° C.) while the air volume mode of the fan 116 is being shifted from the first mode to the second mode, the air volume mode of the fan 116 is changed to the second mode. After shifting to the mode, it is shifted to the third mode. In mode 1 above, the air volume mode of the fan 116 is immediately shifted to the third mode, but mode 7 is slightly different.

That is, as shown in FIG. 17, while the control unit 130 is operating the fan 116 in the first mode, when the top surface temperature reaches t0 (° C.) or higher, the control unit 130 switches to the second mode. Issue a transfer order. Control unit 130 shifts the operation of fan 116 to the second mode in response to this transition command. During the transition to the second mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode, if the top surface temperature further reaches t1 (° C.) or higher, the control unit 130 causes the fan 116 to air volume mode is shifted to the second mode, and then shifted to the third mode. That is, after waiting until the air volume of the fan 116 in the second mode is reached, the air volume of the fan 116 is shifted to the third mode.

At this time, as shown in FIG. 17, the control unit 130 changes the rate of increase in the air volume per unit time when shifting to the third mode from the first mode to the second mode after shifting to the second mode. It is made larger than the rate of increase per unit time of the air volume that is increased toward the target. Therefore, even in the case of mode 7, the same effects as in mode 1 can be obtained. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

<Operation of Aspect 8>
FIG. 18 is a diagram showing a mode transition state (aspect 8) of air volume of the fan in the cooker hood of the second embodiment.

In mode 8, when the top surface temperature becomes less than the threshold temperature t0 (° C.) while the air volume mode of the fan 116 is being shifted from the third mode to the second mode, the air volume mode of the fan 116 is changed to the second mode. After shifting to the mode, the mode is shifted to the first mode. In mode 2 above, the air volume mode of fan 116 is immediately shifted to the first mode, but mode 8 is slightly different.

That is, as shown in FIG. 18, when the control unit 130 is operating the fan 116 in the third mode and the top surface temperature reaches t0 (° C.) or more and less than t1 (° C.), the control unit 130 Issue a transition command to the second mode. Control unit 130 shifts the operation of fan 116 to the second mode in response to this transition command. During the transition to the second mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode, and the top surface temperature becomes less than t0 (° C.), the control unit 130 causes the fan 116 to air volume mode is shifted to the second mode, and then shifted to the first mode. That is, after waiting until the air volume of the fan 116 in the second mode is reached, the air volume of the fan 116 is shifted to the first mode.

At this time, as shown in FIG. 18, the control unit 130 changes the reduction rate of the air volume per unit time when shifting to the first mode from the third mode to the second mode after shifting to the second mode. It is made larger than the reduction rate per unit time of the air volume to be reduced toward. Therefore, in the eighth aspect, the same effect as in the second aspect can be obtained. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

Next, when the control unit 130 shifts the rotation speed of the filter 118 to the determined mode, it is determined to shift the rotation speed of the filter 118 to another mode due to the change in the top surface temperature. In some cases, a mode of shifting to another mode after shifting to the mode for which the number of revolutions of the filter 118 is determined will be described. Specifically, the operation of the control unit 130 when changing the rotation speed mode of the filter 118 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) will be described separately for aspect 9 and aspect 10. do.

(In the case of filter rotation speed)
<Operation of Aspect 9>
FIG. 19 is a diagram showing a mode transition state (aspect 9) of the rotational speed of the filter in the cooker hood of the second embodiment.

In aspect 9, when the top surface temperature becomes equal to or higher than the threshold temperature t1 (° C.) while the rotation speed mode of the filter 118 is being shifted from the first mode to the second mode, the rotation speed mode of the filter 118 is changed to After shifting to the second mode, it is shifted to the third mode. In mode 3 above, the rotational speed mode of the filter 118 is immediately shifted to the third mode, but mode 9 is slightly different.

That is, as shown in FIG. 19, when the top surface temperature reaches t0 (° C.) or higher while the control unit 130 is operating the filter 118 in the first mode, the control unit 130 switches to the second mode. Issue a transfer order. Control unit 130 shifts the operation of filter 118 to the second mode in response to this transition command. During transition to the second mode, that is, before the rotation speed of the filter 118 reaches the rotation speed of the filter 118 in the second mode, if the top surface temperature becomes t1 (° C.) or more, the control unit 130 The rotation speed mode of the filter 118 is shifted to the second mode, and then shifted to the third mode. That is, after waiting until the rotation speed of the filter 118 in the second mode is reached, the rotation speed of the filter 118 is shifted to the third mode.

At this time, as shown in FIG. 19, the control unit 130 changes the rate of increase in the number of revolutions per unit time when shifting to the third mode from the first mode to the second mode after shifting to the second mode. It is made larger than the rate of increase per unit time of the number of rotations that is increased toward. Therefore, even in the case of the ninth aspect, the same effects as those of the third aspect can be obtained. Note that the air volume mode of the fan may be switched along with the mode switching of the filter, or the fan may be controlled separately.

<Operation of Aspect 10>
FIG. 20 is a diagram showing a mode transition state (aspect 10) of the rotational speed of the filter in the cooker hood of the second embodiment.

In aspect 10, when the top surface temperature becomes less than the threshold temperature t0 (° C.) while the rotation speed mode of the filter 118 is being shifted from the third mode to the second mode, the rotation speed mode of the filter 118 is changed to After shifting to the second mode, it is shifted to the first mode. In mode 4 above, the rotational speed mode of filter 118 is immediately shifted to the first mode, but mode 10 is slightly different.

That is, as shown in FIG. 20, when the control unit 130 is operating the filter 118 in the third mode, when the top surface temperature reaches t0 (° C.) or more and less than t1 (° C.), the control unit 130 Issue a transition command to the second mode. Control unit 130 shifts the operation of filter 118 to the second mode in response to this transition command. During the transition to the second mode, that is, before the rotational speed of the filter 118 reaches the rotational speed of the filter 118 in the second mode, and the top surface temperature becomes less than t0 (° C.), the control unit 130 The rotation speed mode of the filter 118 is shifted to the second mode, and then shifted to the first mode. That is, after waiting until the rotational speed of the filter 118 in the second mode is reached, the rotational speed of the filter 118 is shifted to the first mode.

At this time, as shown in FIG. 20, the control unit 130 changes the reduction rate of the number of revolutions per unit time when shifting to the first mode from the third mode to the second mode after shifting to the second mode. is greater than the reduction rate per unit time of the rotation speed that is reduced toward Therefore, in the tenth aspect, the same effect as in the fourth aspect can be obtained. The air volume mode of the fan may be switched along with the mode switching of the filter, or the fan may be controlled separately.

Next, when the control unit 130 shifts the air volume of the fan 116 and the rotation speed of the filter 118 to the determined mode, the change in the top surface temperature causes the air volume of the fan 116 and the filter 118 to change to another mode. When it is decided to shift the rotation speed of the fan 118, a mode of shifting to another mode after shifting to the mode in which the air volume of the fan 116 and the rotation speed of the filter 118 are determined will be described. Specifically, the operation of the control unit 130 when simultaneously changing the air volume mode of the fan 116 and the rotation speed mode of the filter 118 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) is described as a mode. 11 and mode 12 will be described briefly.

(In the case of fan air volume and filter rotation speed)
FIG. 21 is a diagram showing a transition state (aspect 11) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of the second embodiment. FIG. 22 is a diagram showing transition states (aspect 12) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of the second embodiment.

<Operations of Aspects 11 and 12>
In mode 11, as shown in FIG. 21, while the air volume mode of fan 116 is shifting from the first mode to the second mode, and the rotational speed mode of filter 118 is shifting from the fourth mode to the fifth mode. When the temperature of the top surface becomes equal to or higher than the threshold temperature t1 (° C.) during operation, the air volume mode of the fan 116 is shifted to the second mode and then to the third mode, and the mode of the filter 118 is changed to the fifth mode. , and then to the sixth mode.

Further, in mode 12, as shown in FIG. 22, during the transition of the air volume mode of fan 116 from the third mode to the second mode and the rotational speed mode of filter 118 from the sixth mode to the fifth mode, When the top surface temperature becomes less than the threshold temperature t0 (° C.) during the transition, the air volume mode of the fan 116 is shifted to the second mode and then to the first mode, and the mode of the filter 118 is changed to the first mode. After shifting to the 5th mode, it is shifted to the 4th mode.

Aspect 11 is a combination of aspects 7 and 9 above, and aspect 12 is a combination of aspects 8 and 10 above. Therefore, the eleventh aspect can obtain the same effect as the seventh and ninth aspects, and the twelfth aspect can obtain the same effect as the eighth and tenth aspects.

In mode 7 to mode 12 shown in the second embodiment above, if a decision to move to another mode is made while shifting to the determined mode, the mode is changed to another mode after moving to the determined mode. are migrating. Next, in mode 13 to mode 18 described as Embodiment 3, when a decision is made to shift to a mode two steps higher or lower while driving in a certain mode, the mode is shifted to one step higher or lower. It is made to shift to the mode of 2 steps up or down without it.

[Embodiment 3]
Next, when the top surface temperature reaches or exceeds the threshold temperature t1 while the air volume mode of the fan 116 is operating in the first mode, the control unit 130 changes the air volume mode of the fan 116 to the second mode. In the mode of shifting to the third mode without shifting, and when the top surface temperature becomes less than the threshold temperature t0 while the control unit 130 is operating the air volume mode of the fan 116 in the third mode, the fan A mode of shifting the air volume mode of 116 to the first mode without shifting to the second mode will be described. Specifically, the operation of the control unit 130 when changing the air volume mode of the fan 116 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) will be described separately for aspects 13 and 14. .

(For fan air volume)
<Operation of Aspect 13>
FIG. 23 is a diagram showing a mode transition state (aspect 13) of the air volume of the fan in the cooker hood of the third embodiment.

In mode 13, when the air volume mode of the fan 116 is set to the first mode and the top surface temperature reaches or exceeds the threshold temperature t1 (° C.), the air volume mode of the fan 116 is shifted to the second mode. It is made to shift to the 3rd mode without making it change.

At this time, as shown in FIG. 23, the control unit 130 increases the rate of increase in the air volume per unit time when shifting from the first mode to the third mode from the first mode to the second mode. is larger than the rate of increase per unit time (dotted line in the figure). Still more preferably, the rate of increase in the air volume per unit time when shifting from the first mode to the third mode is made greater than the rate of increase when shifting from the second mode to the third mode. Therefore, in the thirteenth aspect, the same effect as in the first aspect can be obtained. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

<Operation of Aspect 14>
FIG. 24 is a diagram showing a transition state (aspect 14) of the air volume mode of the fan in the cooker hood of the third embodiment.

In mode 14, when the air volume mode of the fan 116 is operated in the third mode and the top surface temperature becomes less than the threshold temperature t0, the air volume mode of the fan 116 is not changed to the second mode. It is shifted to the first mode.

At this time, as shown in FIG. 24, the control unit 130 controls the rate of decrease of the air volume per unit time when shifting from the third mode to the first mode. is larger than the rate of decrease per unit time (dotted line in the figure). Still more preferably, the air volume reduction rate per unit time when shifting from the third mode to the first mode is made larger than the reduction rate when shifting from the second mode to the first mode. Therefore, even in the case of mode 14, the same effects as in mode 2 can be obtained. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

Next, when the top surface temperature becomes equal to or higher than the threshold temperature t1 while the filter 118 is operating in the first mode, the controller 130 switches the filter 118 in the second mode. The top surface temperature becomes less than the threshold temperature t0 in the aspect of shifting to the third mode without shifting to the mode, and when the control unit 130 is operating in the third mode with the rotation speed mode of the filter 118 A description will be given of a mode in which the rotational speed mode of the filter 118 is sometimes shifted to the first mode without being shifted to the second mode. Specifically, the operation of the control unit 130 when changing the mode of the rotation speed of the filter 118 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) will be described separately for aspect 15 and aspect 16. do.

(In the case of filter rotation speed)
<Operation of Aspect 15>
FIG. 25 is a diagram showing a mode transition state (aspect 15) of the rotation speed of the filter in the cooker hood of the third embodiment.

In aspect 15, when the top surface temperature reaches or exceeds the threshold temperature t1 (° C.) while the filter 118 is operating in the first mode, the filter 118 is switched to the second mode. is shifted to the third mode without shifting to .

At this time, as shown in FIG. 25, the control unit 130 increases the rate of increase in the number of rotations per unit time when shifting from the first mode to the third mode from the first mode to the second mode. It is made larger than the rate of increase of the number of revolutions per unit time (solid line in the figure). Still more preferably, the rate of increase in the number of rotations per unit time when shifting from the first mode to the third mode is made larger than the rate of increase when shifting from the second mode to the third mode. Therefore, even in the case of mode 15, the same effects as in mode 3 can be obtained. Note that the air volume mode of the fan may be switched along with the mode switching of the filter, or the fan may be controlled separately.

<Operation of Aspect 16>
FIG. 26 is a diagram showing a mode transition state (aspect 16) of the rotation speed of the filter in the cooker hood of the third embodiment.

In aspect 16, when the top surface temperature is less than the threshold temperature t0 while the filter 118 is operating in the third mode, the filter 118 is switched to the second mode. It is made to shift to the 1st mode without.

At this time, as shown in FIG. 26, the control unit 130 reduces the reduction rate of the rotation speed per unit time when shifting from the third mode to the first mode from the third mode to the second mode. It is made larger than the reduction rate of the rotation speed per unit time (solid line in the figure). Still more preferably, the rate of decrease in the number of revolutions per unit time when shifting from the third mode to the first mode is made greater than the rate of decrease when shifting from the second mode to the first mode. Therefore, even in the case of mode 16, the same effects as in mode 4 can be obtained. Note that the air volume mode of the fan may be switched along with the mode switching of the filter, or the fan may be controlled separately.

Next, when the control unit 130 operates the air volume mode of the fan 116 in the first mode and the rotational speed mode of the filter 118 in the fourth mode, the top surface temperature becomes equal to or higher than the threshold temperature t1. When the air volume mode of the fan 116 is not shifted to the second mode, and the rotation speed mode of the filter 118 is not shifted to the fifth mode, the mode is shifted to the third mode and the sixth mode, and the control unit 130 , the air volume mode of the fan 116 is set to the third mode, and the rotational speed mode of the filter 118 is set to the sixth mode. mode to the second mode, and the rotational speed mode of the filter 118 to the first mode and the fourth mode without shifting to the fifth mode. Specifically, the operation of the control unit 130 when changing the air volume mode of the fan 116 and the rotation speed mode of the filter 118 (operations processed in steps S110 and S120 in the operation flowchart of FIG. 6) is described in aspect 17. and Embodiment 18.

(In the case of fan air volume and filter rotation speed)
FIG. 27 is a diagram showing transition states (aspect 17) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of the third embodiment. FIG. 28 is a diagram showing transition states (aspect 18) of the air volume mode of the fan and the rotational speed mode of the filter in the cooker hood of the third embodiment.

<Operations of Aspects 17 and 18>
In mode 17, as shown in FIG. 27, when the air volume mode of fan 116 is operated in the first mode and the rotational speed mode of filter 118 is operated in the fourth mode, the top surface temperature is the threshold value When the temperature reaches t1 (° C.) or higher, the air volume mode of the fan 116 is changed to the third mode without changing the air volume mode of the fan 116 to the second mode and the rotational speed mode of the filter 118 to the fifth mode. mode, and the rotational speed mode of the filter 118 is shifted to the sixth mode.

In mode 18, as shown in FIG. 28, when the air volume mode of fan 116 is operated in the third mode and the rotational speed mode of filter 118 is operated in the sixth mode, the top surface temperature becomes less than the threshold temperature t0 (° C.), the air volume mode of the fan 116 is changed to the second mode, and the rotation speed mode of the filter 118 is not changed to the fifth mode. The mode is shifted to the first mode, and the rotational speed mode of the filter 118 is shifted to the fourth mode.

Aspect 17 is a combination of aspects 13 and 15 above, and aspect 18 is a combination of aspects 14 and 16 above. Therefore, the 17th aspect can obtain the same effect as the 13th and 15th aspects, and the 18th aspect can obtain the same effect as the 14th and 16th aspects.

[Embodiment 4]
Next, a modification of the first and second embodiments described above will be described as a fourth embodiment. FIG. 29 is a diagram showing transition states of fan air volume modes in a conventional range hood. In the range hood, as shown in FIG. 29, when the control unit 130 shifts the air volume of the fan 116 to the determined mode (second mode), the temperature of the top surface changes. When it is decided to shift the air volume of the fan 116 to another mode (third mode), after the air volume of the fan 116 reaches the air volume of the second mode, after waiting for a certain wait time (stabilization time), the third mode is selected. There is a type that shifts to the mode. In addition, in this type of range hood, the increase rate per unit time of the air volume when shifting to the 3rd mode and the increase rate per unit time of the air volume increased from the 1st mode to the 2nd mode are are identical. Embodiment 4 increases the rate of increase in air volume per unit time from the first mode to the second mode when shifting to the third mode in the range hood of the type that provides such a wait time. In this embodiment, the mode is shifted without waiting time when the rate of increase in the air volume per unit time is increased.

(For fan air volume)
<Operation of Aspect 19>
FIG. 30 is a diagram showing a modified example of the air volume mode transition state (aspect 1) of the fan 116 in the range hood of the first embodiment. As shown in FIG. 30, when the control unit 130 shifts the air volume of the fan 116 to the determined mode (second mode), the temperature of the top surface changes to change to another mode (third mode). ), the mode is shifted to the third mode after waiting for a certain wait time (stabilization time) from the time when the shift command to the third mode is issued.

At this time, as shown in FIG. 30, the control unit 130 sets the rate of increase per unit time of the air volume when shifting to the third mode to the air volume per unit time at which the air volume is increased from the first mode toward the second mode. is greater than the rate of increase in

FIG. 31 is a diagram showing a transition state (aspect 19) of the air volume mode of the fan in the cooker hood of the fourth embodiment. In aspect 19, when the air volume mode of the fan 116 is shifted from the first mode to the second mode and the top surface temperature becomes equal to or higher than the threshold temperature t1 (° C.), the air volume mode of the fan 116 is immediately changed. It is shifted to the third mode.

As shown in FIG. 31, while the control unit 130 is operating the fan 116 in the first mode, when the top surface temperature reaches t0 (° C.) or higher, the control unit 130 issues a shift command to the second mode. out. Control unit 130 shifts the operation of fan 116 to the second mode in response to this transition command. During the transition to the second mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode, and the top surface temperature reaches t1 (° C.) or higher, the control unit 130 causes the fan 116 to immediately shifts the air volume mode to the third mode.

At this time, as shown in FIG. 31, the control unit 130 increases the rate of increase in the air volume per unit time from the first mode toward the second mode after the transition command to shift to the third mode is issued. It is made larger than the rate of increase of the air volume per unit time. Therefore, in the nineteenth aspect, the same effect as in the first aspect can be obtained. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

In Aspect 19 above, the case where the air volume mode of fan 116 is immediately shifted to the third mode was exemplified. Alternatively, it can be applied to the air volume of the fan 116 and the rotational speed of the filter 118 .

<Operation of Aspect 20>
FIG. 32 is a diagram showing a modification of the air volume mode transition state (mode 7) of the fan in the cooker hood of the second embodiment. As shown in FIG. 32, when the control unit 130 shifts the air volume of the fan 116 to the determined mode (second mode), the change in the top surface temperature causes another mode (third mode). ), after the air volume of the fan 116 reaches the air volume of the second mode, the mode is shifted to the third mode after waiting for a certain wait time (stabilization time).

At this time, as shown in FIG. 32, the control unit 130 sets the rate of increase of the air volume per unit time when shifting to the third mode to the air volume per unit time at which the air volume is increased from the first mode toward the second mode. is greater than the rate of increase in

FIG. 33 is a diagram showing a mode transition state (aspect 20) of the air volume of the fan in the cooker hood of the fourth embodiment. In aspect 20, when the top surface temperature reaches or exceeds the threshold temperature t1 (° C.) while the air volume mode of the fan 116 is being shifted from the first mode to the second mode, the air volume mode of the fan 116 is changed to the second mode. After shifting to the mode, it is shifted to the third mode.

As shown in FIG. 33, while the control unit 130 is operating the fan 116 in the first mode, when the top surface temperature reaches t0 (° C.) or higher, the control unit 130 issues a shift command to the second mode. out. Control unit 130 shifts the operation of fan 116 to the second mode in response to this transition command. During the transition to the second mode, that is, before the air volume of the fan 116 reaches the air volume of the fan 116 in the second mode, and the top surface temperature reaches t1 (° C.) or higher, the control unit 130 causes the fan 116 to air volume mode is shifted to the second mode, and then shifted to the third mode. That is, after waiting until the air volume of the fan 116 in the second mode is reached, the air volume of the fan 116 is shifted to the third mode. At this time, no wait time as shown in FIG. 32 is provided.

At this time, as shown in FIG. 33, the control unit 130 sets the rate of increase per unit time of the air volume when shifting to the third mode to the air volume per unit time at which the air volume is increased from the first mode toward the second mode. is greater than the rate of increase in Therefore, even in the case of aspect 20, the same effect as in aspect 1 can be obtained. In the case of a range hood with a rotating filter, the filter may also switch the rotation speed mode in accordance with the mode switching of the fan, or the filter may be controlled separately.

In the above aspect 20, the case where the air volume mode of the fan 116 is immediately shifted to the third mode was exemplified. Alternatively, it can be applied to the air volume of the fan 116 and the rotational speed of the filter 118 .

As described above, according to the cooker hood 100 of the present embodiment, the air volume of the fan 116 or the rotation speed of the filter 118 can follow the amount of oily smoke generated, so that the user's usability and satisfaction are improved. can be improved.

As described above, the cooker hood 100 of the present embodiment is divided into three patterns from the first embodiment to the third embodiment. However, the range hood of this embodiment is implemented not only in each pattern of Embodiments 1 to 3, but also in a pattern combining Embodiments 1 and 3, and combining Embodiments 2 and 3. It is possible to implement it in a pattern that

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be embodied in various forms based on the technical ideas described in the claims. , of course, are also within the scope of the present invention.

100 range hood,
110 exhaust,
112 air intake,
114 exhaust port,
116 fans,
117 fan motor,
118 filters;
119 filter motor,
120 operation panel,
121 operation switch,
122 air volume switch,
123 air volume automatic switch,
124 timer switch,
125 light switch,
126 constant ventilation switch,
130 control unit,
135 threshold temperature storage unit,
200 cooker,
210 heat source;
220 grill outlets,
300 temperature sensor.

Claims (32)

A fan that draws in the oily smoke generated by the cooker and exhausts it to the outside,
a control unit that determines the air volume mode of the fan step by step,
When the controller determines to shift the air volume of the fan to another mode while shifting the air volume of the fan to the determined mode, the control unit shifts the air volume of the fan to the determined mode. A range hood that shifts the air volume of the fan to the other mode at a rate of increase or decrease greater than the rate of increase or decrease of the air volume of the fan when the range hood is on. When the controller determines to shift the air volume of the fan to another mode while shifting the air volume of the fan to the determined mode, the controller immediately changes the air volume of the fan to the other mode. to
The rate of increase or decrease of the air volume of the fan when shifting to the other mode is greater than the rate of increase or decrease of the air volume of the fan when shifting the air volume of the fan to the determined mode. , The range hood according to claim 1. When the control unit determines to shift the air volume of the fan to another mode while shifting the air volume of the fan to the determined mode, the control unit shifts to the mode in which the air volume of the fan is determined. after the mode is shifted to the other mode,
wherein the rate of increase or decrease of the air volume of the fan when shifting to the other mode is greater than the rate of increase or decrease of the air volume of the fan when shifting the air volume of the fan to the determined mode; Item 1. Range hood according to item 1. The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
When the control unit determines to immediately shift the air volume mode of the fan to the third mode while the air volume of the fan is being shifted from the first mode to the second mode,
The increase rate of the air volume of the fan when shifting to the third mode is greater than the increase rate of the air volume of the fan when shifting the air volume of the fan from the first mode to the second mode, The cooker hood according to claim 1 or 2. The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
When the control unit determines to immediately shift the air volume mode of the fan to the first mode while the air volume of the fan is being shifted from the third mode to the second mode,
The reduction rate of the air volume of the fan when shifting to the first mode is greater than the reduction rate of the air volume of the fan when shifting the air volume of the fan from the third mode to the second mode, The cooker hood according to claim 1 or 2. The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
The controller shifts the air volume mode of the fan to the second mode while the air volume of the fan is being shifted from the first mode to the second mode, and then shifts the air volume mode to the third mode. When you make the decision to move
3. A rate of increase in the air volume of the fan when shifting to the third mode is greater than a rate of increase in air volume of the fan when shifting the air volume of the fan from the first mode to the second mode. Range hood according to 1 or 3. The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
The control unit switches the air volume mode of the fan to the second mode while the air volume of the fan is being changed from the third mode to the second mode, and then to the first mode. When you make the decision to move
3. The air volume reduction rate of the fan when shifting to the first mode is larger than the reduction rate of the air volume of the fan when shifting the air volume of the fan from the third mode to the second mode. Range hood according to 1 or 3. A fan that draws in the oily smoke generated by the cooker and exhausts it to the outside,
a control unit that determines the air volume mode of the fan step by step,
The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
When the controller determines to shift the air volume mode of the fan to the third mode without shifting the air volume mode of the fan to the second mode while the air volume mode of the fan is operating in the first mode. ,
An increase rate of the air volume of the fan when shifting to the third mode is greater than an increase rate of the air volume of the fan when shifting the air volume of the fan from the first mode to the second mode. . A fan that draws in the oily smoke generated by the cooker and exhausts it to the outside,
a control unit that determines the air volume mode of the fan step by step,
The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
When the controller determines to shift the air volume mode of the fan to the first mode without shifting the air volume mode of the fan to the second mode while the air volume mode of the fan is operating in the third mode. ,
The range hood, wherein a reduction rate of the air volume of the fan when shifting to the first mode is greater than a reduction rate of the air volume of the fan when shifting the air volume of the fan from the third mode to the second mode. . A filter that rotates to remove the oil contained in the oily smoke generated by the cooker;
a control unit that determines the mode of the rotation speed of the filter step by step,
When the control unit determines to shift the rotation speed of the filter to another mode while shifting the rotation speed of the filter to the determined mode, the control unit rotates the filter to the determined mode. a range hood that shifts the rotation speed of the filter to the other mode at a rate of increase or decrease that is greater than the rate of increase or decrease of the rotation speed of the filter when shifting the number. When the controller determines to shift the filter rotation speed to another mode while shifting the filter rotation speed to the determined mode, the control unit immediately changes the filter rotation speed to the above mode. switch to another mode,
The rate of increase or decrease in the rotation speed of the filter when shifting to the other mode is the rate of increase or decrease in the rotation speed of the filter when shifting the rotation speed of the filter to the determined mode. 11. The range hood of claim 10, which is greater than. When the control unit determines to shift the rotation speed of the filter to another mode while shifting the rotation speed of the filter to the determined mode, the control unit changes the rotation speed of the filter to the determined mode. After shifting to the mode, shift to the other mode,
The rate of increase or decrease of the rotation speed of the filter when shifting to the other mode is higher than the rate of increase or decrease of the rotation speed of the filter when shifting the rotation speed of the filter to the determined mode. 11. The range hood according to claim 10, which is large. The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a first mode of zero or the lowest rotation speed, a second mode of rotation speed greater than the rotation speed of the first mode, and the second mode of rotation speed of the first mode. Has three modes, a third mode with a rotation speed greater than the rotation speed of the two modes,
The control unit decides to immediately shift the rotation speed mode of the filter to the third mode while the rotation speed of the filter is being shifted from the first mode to the rotation speed of the second mode. when
The rate of increase in the rotational speed of the filter when shifting to the third mode is higher than the rate of increase in the rotational speed of the filter when shifting the rotational speed of the filter from the first mode to the second mode. 12. The cooker hood according to claim 10 or 11, which is also large. The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a first mode with a rotation speed of zero or the lowest, a second mode with a rotation speed higher than the rotation speed of the first mode, and the Has three modes, a third mode with a rotation speed greater than the rotation speed of the two modes,
The control unit determines to immediately shift the rotation speed mode of the filter to the first mode while the rotation speed of the filter is being shifted from the third mode to the rotation speed of the second mode. when
The reduction rate of the rotation speed of the filter when shifting to the first mode is higher than the reduction rate of the rotation speed of the filter when shifting the rotation speed of the filter from the third mode to the second mode. 12. The cooker hood according to claim 10 or 11, which is also large. The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a first mode of zero or the lowest rotation speed, a second mode of rotation speed greater than the rotation speed of the first mode, and the second mode of rotation speed of the first mode. Has three modes, a third mode with a rotation speed greater than the rotation speed of the two modes,
The control unit shifts the rotation speed mode of the filter to the second mode while the rotation speed of the filter is being shifted from the first mode to the second mode. When you decide to move to 3 mode,
A rate of increase in the rotational speed of the filter when shifting to the third mode is greater than a rate of increase in the rotational speed of the filter when shifting the rotational speed of the filter from the first mode to the second mode. , The range hood according to claim 10 or 12. The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a first mode of zero or the lowest rotation speed, a second mode of rotation speed greater than the rotation speed of the first mode, and the second mode of rotation speed of the first mode. Has three modes, a third mode with a rotation speed greater than the rotation speed of the two modes,
After shifting the rotation speed mode of the filter to the second mode while the rotation speed of the filter is being shifted from the third mode to the rotation speed of the second mode, the control unit When you decide to move to 1 mode,
A reduction rate of the rotation speed of the filter when shifting to the first mode is larger than a reduction rate of the rotation speed of the filter when shifting the rotation speed of the filter from the third mode to the second mode. , The range hood according to claim 10 or 12. A filter that rotates to remove the oil contained in the oily smoke generated by the cooker;
a control unit that determines the mode of the rotation speed of the filter step by step,
The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a first mode of zero or the lowest rotation speed, a second mode of rotation speed greater than the rotation speed of the first mode, and the second mode of rotation speed of the first mode. Has three modes, a third mode with a rotation speed greater than the rotation speed of the two modes,
When the control unit is operating the filter rotation speed mode in the first mode, determining to shift the filter rotation speed mode to the third mode without shifting the filter rotation speed mode to the second mode. when
A rate of increase in the rotational speed of the filter when shifting to the third mode is greater than a rate of increase in the rotational speed of the filter when shifting the rotational speed of the filter from the first mode to the second mode. ,Range food. A filter that rotates to remove the oil contained in the oily smoke generated by the cooker;
a control unit that determines the mode of the rotation speed of the filter step by step,
The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a first mode of zero or the lowest rotation speed, a second mode of rotation speed greater than the rotation speed of the first mode, and the second mode of rotation speed of the first mode. Has three modes, a third mode with a rotation speed greater than the rotation speed of the two modes,
When the control unit is operating the filter rotation speed mode in the third mode, determining to shift the filter rotation speed mode to the first mode without shifting the filter rotation speed mode to the second mode. when
A reduction rate of the rotation speed of the filter when shifting to the first mode is larger than a reduction rate of the rotation speed of the filter when shifting the rotation speed of the filter from the third mode to the second mode. ,Range food. A fan that draws in the oily smoke generated by the cooker and exhausts it to the outside,
a filter that rotates to remove oil contained in oily smoke generated by the cooker;
a control unit for stepwise determining the air volume of the fan and the mode of the rotation speed of the filter;
When the controller determines to shift the air volume of the fan and the rotational speed of the filter to another mode while shifting the air volume of the fan and the rotational speed of the filter to the determined mode, , at a rate of increase or decrease greater than the rate of increase or decrease of the air volume of the fan and the rotation speed of the filter when the air volume of the fan and the rotation speed of the filter are shifted to the determined mode. A range hood that shifts the air volume of the fan and the rotation speed of the filter to the mode of When the controller determines to shift the air volume of the fan and the rotational speed of the filter to another mode while shifting the air volume of the fan and the rotational speed of the filter to the determined mode, , immediately shifting the air volume of the fan and the rotational speed of the filter to the other mode;
The rate of increase or decrease in the air volume of the fan and the rotation speed of the filter when shifting to the other mode is the above-mentioned when the air volume of the fan and the rotation speed of the filter are shifted to the determined mode The cooker hood according to claim 19, wherein the rate of increase or decrease of the air volume of the fan and the rotation speed of the filter is greater. When the controller determines to shift the air volume of the fan and the rotational speed of the filter to another mode while shifting the air volume of the fan and the rotational speed of the filter to the determined mode, , after shifting to the mode in which the air volume of the fan and the rotational speed of the filter are determined, shifting to the other mode;
The rate of increase or decrease in the air volume of the fan and the rotation speed of the filter when shifting to the other mode is the rate of increase or decrease of the air volume of the fan and the rotation speed of the filter when shifting to the determined mode. 20. The cooker hood according to claim 19, wherein the rate of increase or decrease of the wind volume and the rotation speed of the filter is greater. A fan that draws in the oily smoke generated by the cooker and exhausts it to the outside,
a filter that rotates to remove oil contained in oily smoke generated by the cooker;
a control unit for stepwise determining the air volume of the fan and the mode of the rotation speed of the filter;
The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a fourth mode of zero or the lowest rotation speed, a fifth mode of rotation speed greater than the fourth mode, and the Has three modes, a sixth mode with a rotation speed greater than the rotation speed of the 5 modes,
When the controller operates the air volume mode of the fan in the first mode and the rotation speed mode of the filter in the fourth mode, the air volume mode of the fan is changed to the second mode. and a decision to shift the air volume mode of the fan to the third mode and the filter rotational speed mode to the sixth mode without shifting the rotational speed mode of the filter to the fifth mode. when you do
When the air volume mode of the fan is shifted to the third mode and the rotational speed mode of the filter is shifted to the sixth mode, the rate of increase in the air flow rate of the fan and the rotational speed of the filter is determined by the fan air volume mode from the first mode to the second mode, and the rotation speed mode of the filter from the fourth mode to the fifth mode, respectively, the air volume of the fan and the rotation of the filter Range hoods that are greater than the rate of increase in numbers. A fan that draws in the oily smoke generated by the cooker and exhausts it to the outside,
a filter that rotates to remove oil contained in oily smoke generated by the cooker;
a control unit for stepwise determining the air volume of the fan and the mode of the rotation speed of the filter;
The air volume modes of the fan determined stepwise by the control unit include at least a first mode with an air volume of zero or the smallest, a second mode with an air volume greater than the air volume of the first mode, and an air volume of the second mode. has three modes, a third mode with an air volume greater than
The mode of the rotation speed of the filter that is determined stepwise by the control unit includes at least a fourth mode of zero or the lowest rotation speed, a fifth mode of rotation speed greater than the fourth mode, and the Has three modes, a sixth mode with a rotation speed greater than the rotation speed of the 5 modes,
When the controller operates the air volume mode of the fan in the third mode and the rotation speed mode of the filter in the sixth mode, the air volume mode of the fan is changed to the second mode. , and a decision to shift the air volume mode of the fan to the first mode and the rotational speed mode of the filter to the fourth mode without shifting the rotational speed mode of the filter to the fifth mode. when you do
When the air volume mode of the fan is shifted to the first mode and the rotation speed mode of the filter is shifted to the fourth mode, the rate of decrease in the air volume of the fan and the rotation speed of the filter is determined by the fan The air volume mode of the fan is shifted from the third mode to the second mode, and the rotation speed mode of the filter is shifted from the sixth mode to the fifth mode, respectively, the air volume of the fan and the rotation of the filter Range hoods that are greater than the rate of decrease in numbers. 2. The cooker hood according to claim 1, wherein, when shifting the air volume of the fan to the other mode, the controller shifts the air volume of the fan to the other mode without waiting time. When the controller shifts the air volume mode of the fan to the third mode without shifting the air volume mode of the fan to the second mode, the air volume mode of the fan is shifted to the third mode without waiting time. The range hood according to claim 8, which allows When the controller shifts the air volume mode of the fan to the first mode without shifting the air volume mode of the fan to the second mode, the air volume mode of the fan is shifted to the first mode without waiting time. The range hood according to claim 9, which allows 11. The cooker hood according to claim 10, wherein when the controller shifts the rotation speed of the filter to the other mode, the rotation speed of the filter is shifted to the other mode without waiting time. When the control unit shifts the mode of the rotation speed of the filter to the third mode without shifting the mode of the rotation speed of the filter to the second mode, the mode of the rotation speed of the filter is changed to the third mode without waiting time. 18. The range hood of claim 17, transitioning to. When the control unit shifts the mode of the rotation speed of the filter to the first mode without shifting the mode of the rotation speed of the filter to the second mode, the mode of the rotation speed of the filter is changed to the first mode without waiting time. 19. The range hood of claim 18, transitioning to. When shifting the air volume of the fan and the rotation speed of the filter to the other mode, the control unit shifts the air volume of the fan and the rotation speed of the filter to the other mode without waiting time. 20. The range hood according to claim 19. The control unit changes the air volume mode of the fan to the third mode without changing the air volume mode of the fan to the second mode and the rotational speed mode of the filter to the fifth mode, and when the mode of the rotational speed of the filter is shifted to the sixth mode, the air volume mode of the fan is changed to the third mode and the mode of the rotational speed of the filter is changed to the sixth mode without waiting time. 23. The range hood according to claim 22, wherein the range hood is switched to mode. The control unit changes the air volume mode of the fan to the first mode without changing the air volume mode of the fan to the second mode and the rotational speed mode of the filter to the fifth mode, and when the mode of the rotational speed of the filter is shifted to the fourth mode, the air volume mode of the fan is changed to the first mode and the mode of the rotational speed of the filter is changed to the fifth mode without waiting time. 24. The range hood according to claim 23, which shifts to mode.

Images