CN110805939A

CN110805939A - Smoke exhaust ventilator

Info

Publication number: CN110805939A
Application number: CN201910711436.4A
Authority: CN
Inventors: 柏村浩介
Original assignee: Fuji Kogyo Co Ltd
Current assignee: Fuji Kogyo Co Ltd
Priority date: 2018-08-06
Filing date: 2019-08-02
Publication date: 2020-02-18
Anticipated expiration: 2039-08-02
Also published as: JP7121985B2; JP2020024054A; CN110805939B

Abstract

The invention provides a range hood which can be used in any one of a gas cooker and an IH cooker and can perform air volume control matched with each cooker. The range hood (100) is provided with an exhaust fan and is arranged above a cooker, and the range hood comprises: a gas/IH selection switch (132) that selects whether the cooker is a gas cooker or an IH cooker; and a control unit (136) that controls the exhaust fan (116) so that the air volume is different between the gas cooker and the IH cooker based on the setting of the gas/IH selection switch (132).

Description

Smoke exhaust ventilator

Technical Field

The invention relates to a range hood.

Background

Various kinds of hoods capable of controlling the exhaust air volume have been proposed (for example, patent documents 1 and 2).

Patent document 1: japanese patent laid-open publication No. 2013-228114

Patent document 2: japanese patent laid-open publication No. 2018-105517

Such a range hood is applicable to a gas cooker and also to an IH (Induction Heating) cooker (see, for example, paragraph 0014 of patent document 1 and paragraph 0019 of patent document 2).

However, since the gas cooker and the IH cooker heat differently, the surrounding environment is affected differently in the gas cooker and the IH cooker. Therefore, there are the following problems: if the air volume control is performed without distinguishing the gas cooker from the IH cooker, the efficiency is deteriorated and proper exhaust cannot be performed.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a range hood that can be used in any of a gas cooker and an IH cooker and that can perform air volume control in accordance with each cooker.

The range hood of the present invention for achieving the above object has an exhaust fan disposed above a cooker, and includes: a selection switch for selecting whether the cooking device is a gas cooking device or an IH cooking device; and a control unit for controlling the exhaust fan based on the setting of the selection switch in a manner that the air volume is different between the gas cooking device and the IH cooking device.

According to the present invention, since the exhaust air volume is made different between the case of using the hood for the gas cooker and the case of using the hood for the IH cooker, the exhaust air volume suitable for each cooker can be obtained, and odor and soot generated during cooking can be efficiently discharged without waste.

Drawings

Fig. 1 is a perspective view showing an example in which a hood according to an embodiment is provided in a gas cooking device.

Fig. 2 is a perspective view showing an example in which the hood according to the embodiment is installed in an IH cooker.

Fig. 3 is a side view of the range hood according to the embodiment, with the interior thereof being seen through to show the internal structure thereof.

Fig. 4 is a front view of an operation panel 120 provided in the range hood.

Fig. 5 is a block diagram of a control system of the range hood of the embodiment.

Fig. 6 is a table diagram showing the correspondence relationship between the threshold temperature (temperature range) and the exhaust air volume in the air volume control example 1.

Fig. 7 is a table diagram showing the correspondence relationship between the threshold temperature (temperature range) and the exhaust air volume in the air volume control example 2.

Fig. 8 is a table diagram showing the correspondence relationship between the threshold temperature (temperature range) and the exhaust air volume in air volume control example 3.

Description of the reference numerals

100 … range hood; 116 … exhaust fan; 119 … filter disks (rotating filters); 120 … operating panel; 122 … air volume switch; 123 … automatic switch of air quantity; 130 … control device; 200 … gas cooker; 210 … gas burner; 300 … IH cooker; 310 … IH heater; 400 … temperature sensor; 250. 350, 500 ….

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. In addition, the drawings are exaggerated for convenience of explanation. Therefore, the dimensional ratios of the respective constituent elements in the drawings are different from those in reality. In the drawings, the same elements are denoted by the same reference numerals, and redundant description thereof will be omitted in the specification.

Fig. 1 is a perspective view showing an example in which the hood according to the present embodiment is installed in a gas cooking device. Fig. 2 is a perspective view showing an example in which the hood according to the present embodiment is installed in an IH cooker. Fig. 3 is a side view of the range hood according to the present embodiment, with the interior thereof being seen through to show the internal structure thereof.

The hood 100 of the present embodiment is provided above the gas cooker 200 as shown in fig. 1, or above the IH cooker 300 as shown in fig. 2. That is, the range hood 100 of the present embodiment can be installed in either of the gas cooking devices 200 and the IH cooking device 300. The hood 100 sucks and discharges bad odor and oil smoke including smoke, oil, and the like generated when the gas cooker 200 or the IH cooker 300 cooks to the outside. In fig. 1 and 2, an example of the arrangement along the wall surface 600 is shown, but the arrangement may not be along the wall surface. For example, it can be set for an island kitchen.

The gas cooker 200 shown in fig. 1 has three gas burners 210 (also referred to as gas cookers) as heat sources at the top surface 250 of the gas cooker 200. Although not shown, a gas grill may be provided, and in this case, an outlet (not shown) is provided in the top surface 250.

On the other hand, IH cooker 300 shown in fig. 2 has three IH cooking heaters (hereinafter, abbreviated as IH heaters 310) as heat sources on top surface 350 of IH cooker 300. Although not shown, a grill using an electric heater may be provided, and in this case, the top surface 350 has a discharge port (not shown).

As shown in fig. 3, range hood 100 is provided with a temperature sensor 400 for detecting the temperature of top surface 500 of the cooking device on the lower surface of the front surface on the left side of the central portion thereof. The temperature sensor 400 can be, for example, an infrared sensor of a single eye or a compound eye, or an infrared camera. When a compound-eye infrared sensor or an infrared camera is used, the temperature and the temperature distribution of the top surface 500 can be detected. The position of the temperature sensor 400 is not particularly limited as long as it can detect the temperature of the top surface 500. Fig. 3 is a diagram for explaining range hood 100, and in fig. 3, top surface 500 of cooking devices is denoted by reference numeral 500 without distinguishing gas cooking devices 200 and IH cooking devices 300 (hereinafter, similarly, top surface 500 is denoted by a case where top surfaces are explained without distinguishing gas cooking devices 200 and IH cooking devices 300).

The hood 100 includes an exhaust unit 110 at an upper portion thereof. The exhaust unit 110 exhausts odor and soot from the cooking device. The exhaust unit 110 includes: an air suction port 112 for sucking oil smoke from the cooker; an exhaust port 114 communicating with the outside; and an exhaust fan 116 for discharging the soot sucked from the air inlet 112 to the exhaust port 114 in a passage connecting the air inlet 112 and the exhaust port 114. The exhaust fan 116 is driven by the fan motor 115.

In addition, the hood 100 has a filter disc 119 that traps oil in the soot. The filter tray 119 is driven by a dedicated filter tray motor 118. The filter disc 119 is a filter that captures oil from soot by rotating.

The hood 100 includes an operation panel 120 for instructing an operation of the hood 100 on a front surface side of an upper portion thereof.

Fig. 4 is a front view of the operation panel 120 included in the range hood 100. The operation panel 120 includes: an operation switch 121, an air volume switch 122, an air volume automatic switch 123, a timer switch 124, an illumination switch 125, and a constant ventilation switch 126. The operation switch 121 operates the hood 100. The operation switch 121 starts operation at the air volume (mode) at the previous stop when pressed during the stop, and stops operation when pressed during the operation.

The air volume switch 122 manually switches the exhaust air volume of the exhaust fan 116 to weak, medium, and strong. The mode in which the operation is switched and performed manually is referred to as a manual mode.

The air volume automatic switch 123 switches to the automatic mode. In the automatic mode, the exhaust air volume of the exhaust fan 116 and the rotation speed of the filter disc 119 are optimized according to the temperature of the top surface 500 detected by the temperature sensor 400.

The timer switch 124 is a switch for setting a time for rotating the exhaust fan 116 after cooking is completed.

The lighting switch 125 turns on/off a lighting fixture (not shown) that illuminates the upper surface of the cooker.

The constant ventilation switch 126 manually rotates and stops the exhaust fan 116 to perform operation and stop of constant ventilation.

Fig. 5 is a block diagram showing a control system of the hood 100 according to the present embodiment. The range hood 100 has: a fan motor 115, an exhaust fan 116, a filter tray motor 118, a filter tray 119, an operation panel 120, a control device 130, and a temperature sensor 400. The fan motor 115, exhaust fan 116, filter tray motor 118, filter tray 119, operator panel 120, and temperature sensor 400 are as described above.

The control device 130 is built in the hood 100. The control device 130 includes: a gas/IH selection switch 132, a threshold temperature storage section 134, a control section 136, and a timer 137.

The gas/IH selection switch 132 selects whether the kind of cooker of the kitchen in which the hood 100 is provided is the gas cooker 200 or the IH cooker 300. A gas/IH selector switch 132 may also be provided on the operating panel 120. The gas/IH selection switch 132 is operated by a worker when the range hood 100 is installed on the spot, or operated by a user (user) before the range hood 100 starts to be used.

The threshold temperature storage unit 134 stores a threshold temperature for selecting the exhaust air volume of the exhaust unit 110 in association with each region of the temperature of the top surface 500 detected by the temperature sensor 400. The threshold temperature stored in the threshold temperature storage unit 134 is set to the exhaust air volume for each of the plurality of temperature regions. The temperature range set as the threshold temperature is the same for both gas cooker 200 and IH cooker 300. On the other hand, the exhaust air volume corresponding to these temperature regions differs depending on whether it is gas cooker 200 or IH cooker 300.

The control unit 136 controls the exhaust fan so that the air volume becomes the automatic mode corresponding to the threshold value (temperature range) of the threshold temperature storage unit 134, based on the setting selected by the gas/IH selection switch 132. In addition, the control unit 136 also controls the rotation speed of the filter tray 119.

The timer 137 counts the set time.

Next, an air volume control example of the range hood will be described.

(air volume control example 1)

As shown in fig. 6, the temperature ranges that become the threshold values are a low-temperature region, an intermediate-temperature region, and a high-temperature region. The exhaust air volume corresponds to these temperature ranges, and the air volume for the gas cooker is increased such that Gs1 < Gs2 < Gs3, and the air volume for the IH cooker is increased such that Hs1 < Hs2 < Hs 3. The exhaust air volume differs depending on whether gas cooker 200 or IH cooker 300 is used.

In the low temperature region, Gs1 > Hs 1. That is, the minimum air volume Gs1 for the gas cooker is larger than the minimum air volume Hs1 for the IH cooker. In this low temperature region, the minimum air volume Hs1 for the IH cooker may be air volume 0 (i.e., exhaust fan stopped). This is because IH cooking device 300 does not require exhaust in a state where the temperature is relatively low at the start of cooking and there is little odor or soot. This can stop the exhaust fan 116, thereby improving the energy saving effect without noise. In addition, in the gas cooking device 200, since the gas is burned even if the temperature of the top surface 250 is low, it is not preferable to stop the exhaust (i.e., stop the exhaust fan).

In the medium temperature region, Gs2 < Hs 2. That is, the air volume Gs2 for the gas cooker is smaller than the air volume Hs2 for the IH cooker. This is because, in the case of the gas cooker 200, the periphery of the gas burner 210 is also warmed by the combustion of the gas, and a certain degree of updraft is generated. In contrast, in the case of IH cooker 300, even if the amount of heat applied to the cooking utensil is the same as in the case of gas, the ambient temperature does not rise to the level of gas cooker 200. Therefore, in the middle temperature range, the ascending air flow of IH cooker 300 is smaller than that of gas cooker 200, and therefore air volume Hs2 is preferably made larger than air volume Gs2 of gas cooker 200. Thus, in IH cooker 300, even when odor and soot are generated, it is possible to reliably perform air exhaust without depending on the updraft.

In the high-temperature region, Gs3 ═ Hs 3. That is, the air volume Gs3 for the gas cooker and the air volume Hs3 for the IH cooker both have the maximum air volume as the exhaust performance of the exhaust fan 116. This is because, in both gas cooker 200 and IH cooker 300, since there is a possibility that much odor and soot are generated when the temperature is high, the maximum air volume is discharged by exhaust fan 116 as the exhaust performance.

By performing such control, the range hood 100 of the present embodiment is provided in both the gas cooker 200 and the IH cooker 300 with appropriate air volumes according to the characteristics and temperature of the cookers, and therefore, the efficiency of collecting odor and smoke can be improved, and an energy saving effect can be obtained.

(air volume control example 2)

In the air volume control example 2, the temperature ranges that become the threshold values are also the low temperature region, the intermediate temperature region, and the high temperature region. The exhaust air volume corresponds to these temperature ranges, and the air volume for the gas cooker is increased such that Gs1 < Gs2 < Gs3, and the air volume for the IH cooker is increased such that Hs1 < Hs2 < Hs 3. The exhaust air volume differs depending on whether gas cooker 200 or IH cooker 300 is used.

In addition, in the air volume control example 2, as shown in fig. 7, the air volumes Gs1 to Gs3 for the gas cookers are always larger than the air volumes Hs1 to Hs3 for the IH cookers in all temperature ranges.

This is because the gas cooking device 200 generates gas with combustion, and requires exhaust gas with a required ventilation amount for discharging the gas from the viewpoint of safety. IH cooker 300, on the other hand, does not generate gas. Therefore, the necessary ventilation amount is not specified and there is no problem in that the exhaust air volume is reduced.

In addition, gas cooker 200 generates more heat than IH cooker 300, and thus if the heat is not discharged, the user feels uncomfortable due to the heat in many cases. In contrast, IH cooking device 300 generates less heat than gas cooking device 200, and therefore, even if the air volume is reduced, the user feels less uncomfortable with heat.

By performing such control, when range hood 100 of the present embodiment is installed in gas cooker 200, the exhaust can be performed reliably, and the user can use range hood 100 in a comfortable space, and when range hood 100 is installed in IH cooker 300, the noise can be suppressed, and the energy saving effect can be obtained.

In the air volume control example 2, for example, the minimum air volume Hs1 for the IH cooker may be equal to air volume 0 (exhaust fan 116 is stopped). In addition, a part of the air volume may be the same for the gas cooker and the IH cooker. That is, a temperature range of Gs > Hs may be present in combination with a temperature range of Gs ═ Hs. For example, the air volume in the low temperature region may be the same (Gs1 ═ Hs1) and the air volume in the other temperature region may be larger than that for the IH cooker (Gs2 ≧ Hs2, Gs3 ≧ Hs3), or the air volume in the intermediate temperature region may be the same (Gs2 ═ Hs2) and the air volume in the other temperature region may be larger than that for the IH cooker (Gs1 ≧ Hs1, Gs3 ≧ Hs3), or the air volume in the high temperature region may be the same (Gs3 ═ Hs3) and the air volume in the other temperature region may be larger than that for the IH cooker (Gs1 ≧ Hs1, Gs2 ≧ Hs 2).

(air volume control example 3)

In the air volume control example 3, the temperature ranges that become the threshold values are also the low temperature region, the intermediate temperature region, and the high temperature region. The exhaust air volume corresponds to these temperature ranges, and the air volume for the gas cooker is increased such that Gs1 < Gs2 < Gs3, and the air volume for the IH cooker is increased such that Hs1 < Hs2 < Hs 3. The exhaust air volume differs depending on whether gas cooker 200 or IH cooker 300 is used.

In addition, in the air volume control example 3, as shown in fig. 8, the air volumes Gs1 to Gs3 for the gas cookers are always smaller than the air volumes Hs1 to Hs3 for the IH cookers in all temperature ranges.

This is because IH cooker 300 can heat only the cooking utensil on IH heater 310, and therefore the temperature around it is difficult to rise, and therefore the updraft is weaker as compared to gas cooker 200 as whole top surface 350. Therefore, if the exhaust is not performed at a certain constant air flow rate, the collection efficiency of the odor, the soot, and the like may be deteriorated. On the other hand, in gas cooker 200, when the same heat as that of IH cooker 300 is applied to the cooking utensil, the surrounding air is also heated by gas burner 210, and the updraft is stronger than that of IH cooker 300. Therefore, even if the air volume is reduced, the collecting efficiency of odor, oil smoke, and the like can be improved by the ascending air flow.

By performing such control, when the range hood 100 of the present embodiment is installed in the IH cooker 300, the efficiency of collecting odor and soot can be improved, and when the range hood 100 is installed in the gas cooker 200, the air volume can be reduced to suppress noise, and an energy saving effect can also be obtained.

In the air volume control example 3, a part of the air volume may be the same for the gas cooker and the IH cooker. That is, a temperature range of Gs < Hs may be present in combination with a temperature range of Gs ═ Hs. For example, the air volume in the low temperature region may be the same (Gs1 ═ Hs1) and the air volume in the other temperature region may be smaller than that for the IH cooker (Gs2 < Hs2, Gs3 < Hs3), or the air volume in the intermediate temperature region may be the same (Gs2 ═ Hs2) and the air volume in the other temperature region may be smaller than that for the IH cooker (Gs1 < Hs1, Gs3 < Hs3), or the air volume in the high temperature region may be the same (Gs3 ═ Hs3) and the air volume in the other temperature region may be smaller than that for the IH cooker (Gs1 < Hs1, Gs2 < Hs 2).

As described above, three control examples have been described, and in each control example, the air volume for the gas cooker or the air volume for the IH cooker is set at the time of installation of the hood (or at the time of start of use) by selection of the gas/IH selection switch 132.

Next, the control of the filter tray 119 will be explained. The filter disc 119 is also controlled in the same manner as the exhaust fan 116, and the rotation speed (rotation speed) thereof is changed in accordance with the temperature detected by the temperature sensor 400. That is, the rotation speed of the filter tray 119 is changed simultaneously with the change of the air volume. In this case, the threshold temperature (temperature range) for changing the air volume is set to be the same as the threshold temperature (temperature range) for changing the rotation speed of the filter disk 119. For example, in a low temperature region where the possibility of generation of soot is low (the exhaust air volume of exhaust fan 116 is minimized or stopped), rotation of filter plate 119 is minimized or stopped in both gas cooker 200 and IH cooker 300. In the middle temperature region, the filter disks 119 are rotated at a rotation speed faster than the lowest speed (middle speed). Also in the high temperature region, the filter disc 119 is set to the highest rotation speed. The higher the cooking temperature, the more the oil component in the soot. Therefore, the higher the temperature zone (the higher the detected temperature of the temperature sensor 400), the more the oil components in the soot can be captured and removed by rotating the filter disc 119 at a high speed.

In addition, the filter tray 119 may be controlled, for example, by changing the rotation speed of the filter tray 119 in multiple steps or without steps, independently of the threshold temperature (temperature range) for controlling the air volume of the exhaust fan 116, based on the temperature detected by the temperature sensor 400. In this case, it is also preferable that the rotation speed be increased as the detected temperature is increased. In addition, the filter tray 119 may be set to a constant rotation speed when the detection value of the temperature sensor 400 is equal to or greater than a predetermined value independently of the air volume control of the exhaust fan 116.

The filter tray 119 may be controlled so that the filter tray 119 is always rotated at a constant rotation speed, regardless of the temperature zone and the detected temperature of the temperature sensor 400. In this case, the controller 136 rotates the filter disc 119 at a constant rotation speed even when the exhaust fan 116 is rotated, and stops the filter disc 119 even when the exhaust fan 116 is stopped (the filter disc 119 may be simply rotated/stopped in conjunction with the on/off operation of the operation switch).

Of course, the rotational speed of the filter tray 119 may be varied in the gas cooker 200 and the IH cooker 300 in controlling the filter tray 119. That is, in gas cooker 200 and IH cooker 300, the rotation speed of filter tray 119 is also changed in accordance with the air volume setting of each cooker already described.

Next, the manual mode will be explained. In the manual mode, the control unit 136 controls the exhaust fan 116 in accordance with the operation of the air volume switch 122. In the manual mode, as in the automatic mode, the air flow rate for the gas cooker is set to Gs1 < Gs2 < Gs3, and the air flow rate for the IH cooker is set to Hs1 < Hs2 < Hs 3.

In the manual mode, the same control as in the air volume control examples 1 to 3 was also performed.

That is, similarly to the air volume control example 1, by the operation of the air volume switch 122, Gs1 > Hs1 in the case of "weak", Gs2 < Hs2 in the case of "medium", and Gs3 ═ Hs3 in the case of "strong". The air volume Hs1 for the IH cooker may be "weak" and set to air volume 0 (i.e., exhaust fan stopped).

Similarly to the air volume control example 2, the air volume Gs1 to Gs3 for the gas cooker may be made larger than the air volume Hs1 to Hs3 for the IH cooker by the operation of the air volume switch 122 in any of "weak", medium "and" strong ". In this control, the air volume Hs1 for the IH cooker may be set to air volume 0 (i.e., the exhaust fan may be stopped) in the case of "weak".

In the manual mode, when "weak" is selected in accordance with an instruction from the user and the minimum air flow Hs1 for the IH cooker is set to the air flow 0 (the exhaust fan 116 is stopped), the air flow 0 is continued as it is even if the temperature of the cooking appliance becomes high. Therefore, in such setting, it is preferable that the timer 137 be further used to switch from the manual mode to the automatic mode after a predetermined time has elapsed. Accordingly, even if the user selects the "weak" operation, the mode is switched to the automatic mode, and therefore, when the temperature reaches a temperature at which odor and soot are generated, the operation can be started to discharge the odor and soot. The predetermined time may be determined according to a design gear of the range hood 100, or may be set later by a user. For example, the automatic mode is switched to the automatic mode for about 1 to 5 minutes, which is a time period of 500 ml of water boiling, based on the output of the IH heater 310. The timer 137 starts counting at a time when "weak" is selected by the user.

Of course, when "weak" is selected and the exhaust fan 116 is stopped, even before the end of the counting of the predetermined time period, if "medium" or "strong" is selected, the control unit 136 starts the operation so that the exhaust fan 116 has the air volume set to "medium" or "strong". In this case, at the time when "medium" or "strong" is selected, the selection of "weak" is not performed (the exhaust fan 116 is stopped), and therefore, even if a predetermined time has elapsed by the timer 137, the automatic mode is not switched (the timer may be stopped at the time when "medium" or "strong" is selected). Then, at the time of the next selection of "weak", the timer 137 starts counting a predetermined time from the beginning.

In the manual mode, similarly to the air volume control example 3, the air volume Gs1 to Gs3 for the gas cooker may be made smaller than the air volume Hs1 to Hs3 for the IH cooker in any of "weak", medium "and" strong "by the operation of the air volume switch 122.

In addition, the setting may be changed according to an automatic mode and a manual mode. For example, the setting for the IH cooker may be such that the minimum air volume Hs1 becomes equal to air volume 0 in the automatic mode and the minimum air volume at which the exhaust fan 116 can operate in the "weak" manual mode (in this case, there is no switching from the "weak" manual mode to the automatic mode).

In addition, the control of the filter disc 119, which may be in the case of the manual mode, is to change the rotational speed of the filter disc 119 in coordination with "weak", "medium" and "strong". For example, if "weak" is selected, the rotation speed of the filter disc 119 is set to the minimum speed (or stopped). In the case where "medium" is selected, the rotation speed of the filter disc 119 is made to be medium speed faster than the lowest speed. The "strong" condition is selected to provide the filter disc 119 with the highest rotational speed. Even when any of "weak", "medium", and "strong" is selected in the manual mode, the rotation speed may be always constant, or the rotation speed may be stopped in the "weak" state and the rotation speed may be constant in the "medium" and "strong" states. In the manual mode, the air volume is arbitrarily selected by the user (any of "weak", "medium", and "strong" in this case), but the control of the filter tray 119 may be changed always in accordance with the detected temperature of the temperature sensor 400 as in the automatic mode described above.

According to the embodiment described above, exhaust fan 116 is controlled so that the amount of exhaust air differs between the case where range hood 100 is used in gas cooker 200 and the case where range hood is used in IH cooker 300. Thus, the exhaust air volume suitable for each cooking device can be obtained, and odor and oil smoke generated during cooking can be efficiently discharged without waste.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments. For example, although the range hood 100 having the automatic mode is described in the embodiment, the present invention can be applied to a range hood having only the manual mode without the automatic mode.

In the embodiment, the example of the hood 100 provided with the filter (filter disc 119) rotating to collect the soot is shown, but the present invention can also be applied to a hood without a rotating filter (filter disc).

In the embodiment, the air volume of three stages has been described in both the case of gas cooker 200 and the case of IH cooker 300, but the air volume setting may be two stages or a large air volume setting of four or more stages. Further, the air volume may be changed without a step. In these cases, similarly to the embodiment, the air volume is made different between the case of gas cooker 200 and the case of IH cooker 300. That is, regardless of the air volume shift position, air cooker 200 may be larger than IH cooker 300 for all air volumes, or conversely, air cooker 200 may be smaller than IH cooker 300 for all air volumes. In addition, the air volume may be different for each temperature zone and each gear in gas cooker 200 and IH cooker 300.

In the embodiment, an example of the hood that discharges the exhaust gas to the outside is shown, but the present invention can also be applied to an indoor circulation type hood.

The present invention can be implemented in various forms based on the technical idea described in the claims, and it is apparent that the embodiments also belong to the model 30087.

Claims

1. A range hood comprises an exhaust fan arranged above a cooker,

wherein, have:

a selection switch that selects whether the cooker is a gas cooker or an IH cooker; and

and a control unit which controls the exhaust fan so that the air volume is different between the gas cooker and the IH cooker based on the setting of the selection switch.

2. The range hood of claim 1,

the control unit makes the air volume when the gas cooker is selected by the selection switch larger than the air volume when the IH cooker is selected.

3. The range hood of claim 1,

the control unit makes the air volume when the gas cooker is selected by the selection switch smaller than the air volume when the IH cooker is selected.

4. The range hood of claim 1 or 2, wherein,

the control unit makes a minimum air volume when the IH cooker is selected by the selection switch smaller than a minimum air volume when the gas cooker is selected.

5. The range hood of claim 4,

the minimum air volume is a state in which the exhaust fan is stopped.

6. The range hood of any of claims 1-5, wherein,

having a temperature sensor for detecting the temperature of the top surface of the cooker,

the control unit changes the air volume of the exhaust fan in accordance with the temperature detected by the temperature sensor.

7. The range hood of claim 5, wherein there is:

a temperature sensor that detects a temperature of a top surface of the cooker; and

a timer for counting a predetermined time,

the control unit changes the air volume of the exhaust fan in accordance with the temperature detected by the temperature sensor after the timer counts a predetermined time when the stop of the exhaust fan is selected in accordance with an instruction from a user.

8. The range hood of any of claims 1-7, wherein,

there is also a rotating filter.

9. The range hood of claim 8,

the control unit rotates the filter when controlling the air volume of the exhaust fan to a minimum air volume.

10. The range hood of claim 8,

the control unit stops rotation of the filter when the air volume of the exhaust fan is controlled to be a minimum air volume.

11. The range hood of any of claims 8-10, wherein,

the control unit changes the rotation speed of the filter in accordance with the temperature detected by the temperature sensor.