JP2002061908A - Ventilation air volume automatic control system - Google Patents

Abstract

(57) [Summary] [Technical problem] Provided is a range hood control system which can eliminate the trouble of turning on / off a range hood one by one and can always perform optimal ventilation. SOLUTION: Based on sensors 4a, 4b, 4c for detecting a use condition of a gas stove 4, an optimal ventilation air volume is calculated by a control circuit 8 to automatically control a rotation speed of a motor 3 of a ventilation fan 2 in a range hood 1. I do.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic ventilation air volume control system for a range hood attached to a kitchen.

[0002]

2. Description of the Related Art In a kitchen, a range hood discharges combustion exhaust gas generated from burning appliances such as gas stoves, grills, ovens, etc., and steam, oil smoke, etc. generated from cooked food to the outside. Is manually ON,
The system is turned off or the ventilation air volume is manually adjusted to high, medium, or low.

[0003]

Therefore, the conventional range hood has the following disadvantages. 1. Despite using a burning appliance, they sometimes forget to put on the range hood or forget to turn it off. 2. It is desirable to set the optimal amount of combustion exhaust according to the number of burning appliances in use, the amount of combustion, the amount of steam or oil smoke generated from the cooked food, but since it is a manual method as described above, However, since it is left to the discretion of the cook, there are many problems of excessive ventilation and insufficient ventilation. 3. If the ventilation is excessive, the air-conditioning effect of the kitchen is impaired. If the ventilation is insufficient, the air in the kitchen becomes dirty, and oil smoke adheres to the furniture and interior in the kitchen.

[0004] The present invention has been proposed in view of the above, and an object of the present invention is to automatically control the number of rotations of a ventilation fan in a range hood according to the use condition of a combustion appliance. It is an object of the present invention to provide a control system for a range hood that does not always provide optimal ventilation, forget to turn on, and forget to stop.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided an automatic ventilation air flow control system, comprising: a combustion appliance use status detecting means for detecting a use status of a combustion appliance; A control circuit for calculating an optimum ventilation air volume based on the usage status detected by the usage status detection means and automatically controlling the rotation speed of the ventilation fan in the range hood.

Further, in the invention according to claim 2,
According to the first aspect of the present invention, the burning appliance includes a gas stove, a grill, and a gas oven, and the usage status of the burning appliance includes ON / OFF of the appliance and a gas combustion amount. .

Further, in the invention according to claim 3,
In the invention according to claim 1 or 2, the control circuit includes:
A delay circuit for continuing ventilation for a certain period of time after use of the combustion apparatus is completed is added.

Further, in the invention according to claim 4,
In the invention described in claim 1, 2 or 3, a manual control circuit is added to the control circuit in addition to a circuit for automatically controlling the ventilation air volume.

Further, in the invention described in claim 5,
In the invention according to claim 1, 2, 3 or 4, the control circuit includes steam generated from the cooking product, an amount of oil smoke, and the like.
A correction circuit for automatically controlling the ventilation air volume based on exhaust factors other than the combustion exhaust gas is added.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied not only to a range hood attached to a kitchen of a general household but also to a range hood for business use. Hereinafter, embodiments of the invention described in claims 1 to 5 will be described in detail with reference to FIG. Reference numeral 1 denotes a range hood, and a ventilation fan 2 is incorporated in the range hood 1 and a motor 3 for driving the ventilation fan 2 is incorporated therein. Its rotation speed is variable.

Reference numeral 4 denotes a gas stove, which is provided with three stoves having so-called three-port stoves having different combustion amounts. The stoves can be independently turned ON and OFF, and the combustion amount can be analogized. It is freely adjustable. Reference numeral 5 denotes a grill, and 6 denotes a gas range. Exhaust air from the grill 5 and the gas range 6 is also collected by the range hood 1 and exhausted from the duct 7 to the outside.

Reference numeral 8 denotes a control circuit.
Are sensors 4a of each gas stove 4, as shown in FIG.
4b and 4c detect ON / OFF of the gas stove 4 and at the same time detect a combustion amount (thermal power) at that time, and furthermore, use conditions of the grill 5 and the gas range 6 with sensors (not shown).
And the ventilation fan 2 (motor 3) of the range hood 1 is controlled at least as follows. 1. When any one of the burning appliances is used, the motor 3 is automatically driven to start ventilation. At the start of the use, the amount of combustion of the burning appliance is input as data, and an optimal air volume is calculated based on the data, and the rotation speed of the motor 3 is controlled. 2. When the use of another gas stove 4 or grill 5 or the like is started, the total air volume to be added to the previous data is calculated, and the rotation speed of the motor 3 is controlled. When the amount of combustion (thermal power) is adjusted by the cooker during use of the burning appliance, the calculation of the air volume optimal for the amount of combustion is automatically performed, and the rotation speed of the motor 3 is controlled. 3. When all burning appliances have been used, for example, 15
After a delay of about 30 seconds, the motor 3 is stopped, and the ventilation fan 2 is stopped. 4. In the case where a large amount of oily smoke is generated or cooking of a steamy object is performed, the above-described calculated value of 1 is corrected by the correction circuit 9,
Increase ventilation volume. It is convenient that this correction value is determined in advance in accordance with the food and can be input using a touch panel or the like. 5. If all the controls are performed automatically, it may be rather inconvenient. Therefore, the control circuit 8 is provided with a manual control circuit 10, and the manual control circuit 10 controls the operation of the range hood 1 arbitrarily. Can be.

[0013]

As described above, according to the present invention, the O
Range hood ventilation fan ON, O in conjunction with N, OFF
By performing FF, determining the ventilation air volume based on the number of equipment used and the amount of combustion, and automatically controlling the number of revolutions of the ventilation fan,
The following effects are obtained. 1. There is no forgetting to put on or stop the range hood (claims 1 to 4). 2. Since the optimal amount of ventilation is performed, the air conditioning is not adversely affected, the air in the kitchen is not stained, and the interior and furniture are not stained with oil smoke. 3. The provision of the circuit for correcting the ventilation air flow according to the steam and oil smoke from the cooked food allows the ventilation air flow to be more finely controlled (claim 5). 4. There is no problem of insufficient ventilation because the range hood is stopped after a delay after the use of the burning appliance (claim 3). 5. Since the manual control circuit is provided, it is easy to use (claim 4).

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a range hood control system according to the present invention.

FIG. 2 is an explanatory diagram of a control circuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Range hood 2 Ventilation fan 3 Motor 4 Gas stove 5 Grill 6 Gas range 7 Duct 8 Control circuit (control part) 9 Correction circuit 10 Manual control circuit

Claims (5)

[Claims] 1. A combustion appliance use condition detecting means for detecting a use condition of a combustion appliance, and an optimum ventilation air volume is calculated based on the use condition detected by the use condition detection device, to thereby determine a ventilation fan in the range hood. A ventilation air volume automatic control system comprising a control circuit for automatically controlling the number of revolutions. 2. The burning appliance includes a gas stove, a grill, and a gas oven.
2. The ventilation air flow automatic control system according to claim 1, wherein N, OFF, and a combustion amount of gas are included. 3. The ventilation air flow automatic control system according to claim 1, wherein the control circuit is provided with a delay circuit for continuing ventilation for a predetermined time after the use of the combustion apparatus is finished. 4. The automatic ventilation air volume control system according to claim 1, wherein a manual control circuit is added to the control circuit in addition to a circuit for automatically controlling the ventilation air volume. 5. The control circuit further includes a correction circuit for automatically controlling the ventilation air flow based on exhaust factors other than the combustion exhaust gas, such as the amount of steam and oil smoke generated from the food. The ventilation air volume automatic control system according to claim 1, 2, 3, or 4.