JPS63204048A - Full-automatic range hood with inverter - Google Patents

Abstract

PURPOSE:To prevent a switch from being kept ON and to reduce the generation of noise and the cost, by a method wherein an inverter and various sensors are mounted to a range hood, and a fan is run full-automatically. CONSTITUTION:When a gas table 1 is used, an inverter control part 4 starts a fan 3 upon reception of a signal from a gas detecting part 8. Concentration of CO2 generated during cooking is detected by a CO2 concentration sensor 5 incorporated in a range hood, and the number of revelations of the fan 3, i.e. an airflow, is proportionally changed by means of the inverter control part 4. When gas of the gas table 1 is stopped upon completion of the use, a stop signal is outputted from a gas pressure detector 8; meanwhile, arrangement of an approximate 2-minute extinguishment delay timer in the middle allows exhaust of a remaining heat. Running of an inverter-mounted fan cases reduction of the generation of noise more than necessary, prevents useless running of the fan, reduces running cost, and enables full automatic operation eliminating operation of a switch by hand, and sharply improves convenience.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a ventilation fan range hood for a residential kitchen.

Conventional Technology Range hoods used in kitchens in general homes are equipped with a manual switch, and each time the switch is operated, the fan is turned on and off and the air volume is controlled in stages.

Problems to be Solved by the Invention According to the prior art as described above, there are the following problems: (1) Wasteful operation due to forgetting to turn off the switch.

(2) Since the rotation speed of the fan is always constant, the fan rotates even when the amount of gas combusted is small, in the same way as when the amount of combusted gas is large.

(3) As a result of (11 (21) above, the noise of the fan is large and wasteful electricity is consumed.

Means for solving the problem: A gas pressure detection section is provided on the gas table to enable automatic starting and stopping of the fan. A CO2 level sensor is installed in the range hood to detect the amount of smoke generated, and a fan inverter is used to control unauthorized floors. Also, by using an inverter, we will consider the reduction in runtime/cost and generated noise.

By attaching an inverter and various sensors to the range hood and operating the fan fully automatically, there is no need to switch on or off every time, and noise and running costs are reduced.

Embodiment In FIG. 1, 1 is a gas stove, 2 is a range hood, 3 is a fan attached to the range hood 2, 4 is an inverter control unit for the fan 3, 5 is a CO2@degree sensor attached to the range two 12, Reference numeral 6 designates a control unit of the CO□ concentration sensor 5, 7 a gas pipe of the gas table l, and 8 a gas pressure detection unit attached to the gas table l.

In such an apparatus, when the gas table 1 is used, the inverter control section 4 starts the fan 3 in response to a signal from the gas detection section 8 .

CO□ concentration released during cooking can be measured by CO2 installed inside the range hood.
Detected by concentration sensor 5, inverter control section #4
changes the rotation speed of the fan 3, that is, the air volume proportionally.

When the gas in the gas stove 1 is turned off at the end of use, a stop signal is issued by the gas pressure detector 8, but residual heat is exhausted by placing a timer that delays turning off the stove for about 2 minutes.

The above operation can be expressed in a flowchart as shown in FIG.

Effects of the invention (1) By operating the inverter-mounted fan, more noise than necessary is reduced, unnecessary fan operation is eliminated, and running costs can be reduced.

(2) Fully automatic operation that does not require manual switch operation is possible, and ease of use is the same as in item 1 above.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a fully automatic range hood with an inverter according to the present invention, and FIG. 2 is a flowchart showing the operation of the apparatus shown in FIG.

Claims (1)

[Claims] A range hood fan having an inverter control unit;
It is equipped with a CO_2 concentration sensor installed on the range hood, a gas pressure detection section installed on the gas stove, and a timer connected to the gas pressure detection section.When the gas stove is ignited, the gas pressure detection section operates and the fan starts. When the gas stove is extinguished, the gas pressure detection unit and timer are activated, and the fan stops after a specified time delay of the timer.Furthermore, while the gas stove is ignited, the fan rotation speed is controlled by the CO_2 concentration in the range hood due to the action of the CO_2 concentration sensor. A fully automatic range hood with an inverter that adjusts the temperature.