JPS63246496A - Blowing method for blower - Google Patents

Abstract

PURPOSE:To suppress the unnatural feeling of a person blown, by controlling a fan motor in such a manner that a frequency of appearance of high rotational speed of the fan motor is generally less than that of low rotational speed of the fan motor. CONSTITUTION:A rotational speed selecting circuit 2 operates to set three kinds of rotational speeds (high, medium and low) of a motor 1 for rotating a fan, in receipt of a signal from a rotational speed control circuit 3. The rotational speed control circuit 3 counts signals from a reference time forming circuit 4 and maintains a certain rotational speed of the motor 1 for a given time, then sequentially shifting the rotational speed to another rotational speed. The continuation times of the three kinds of rotational speeds are suitably set to form a blowing pattern such that as the rotational speed decreases, a frequency of appearance of the decreased rotational speed is increased. Accordingly, as the rotational speed is shifted from high to low condition, the frequency of appearance of the low condition becomes more. Further, random blowing is associated with the above control. Therefore, it is possible to obtain a blowing condition approximate to a natural wind.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Use in Childcare Field of the Invention The present invention relates to a method of blowing air using an air blower such as an electric fan that generates wind similar to natural wind.

BACKGROUND OF THE INVENTION Conventionally, this type of blower has had a configuration as shown in FIG. In FIG. 2, reference numeral 1 denotes a motor for rotating the fan, and in this example, an AC induction type is used, which can change the rotation speed in three stages. Reference numeral 2 denotes a rotation speed switching device for the motor 1 using a triac, which sets the motor 1 to a certain rotation speed based on a signal from the rotation speed control circuit 3. The rotation speed control circuit 3 uses a microcomputer or the like, and has the function of counting the signals from the reference time generation circuit 4 to keep the motor 1 at a certain rotation speed for a certain period of time, and then sequentially switching to another rotation speed. It is something. 6
is a power supply circuit that creates a DC power supply.

In the blower configured as described above, the number of revolutions of the motor 1 is changed over time in order to generate wind suitable for human activities such as rest and sleep, and a typical example is shown in FIG.

In FIG. 3, pattern P1 is called a barundum wind, and is characterized by little regularity between the frequencies of rotation. Pattern P2 is what is called a rhythmic wind, and the frequency of appearance of the rotation speed is the same regardless of the rotation speed. Pattern P3 is what is called an intermittent wind, and the number of rotations only appears in a long section, and the frequency of appearance becomes smaller as time passes.

Problems to be Solved by the Invention In the air blowing method with such a conventional configuration, the pattern P1 is a more natural wind that is suitable for when people are resting, but the frequency of occurrence of the rotation speed is There was a problem that people who were exposed to the wind felt rushed because there was little regularity in the wind.

The present invention is intended to solve these problems, and aims to provide an air blowing method that does not cause unnatural feelings to the person who is exposed to the wind.

Means for Solving the Problem In order to solve this problem, the present invention includes a fan, a motor for rotating the fan, a rotation speed switching device for switching the rotation speed of the motor, and a rotation speed switching device for switching the rotation speed of the motor. A rotation speed control circuit is provided which measures the duration of the rotation speed and then switches to another rotation speed, and the rotation speed control circuit is arranged so that the frequency of appearance of a state with a high rotation speed is generally lower than the frequency of appearance of a state with a low rotation speed. It is something to control.

Effect: With this method of blowing air, the frequency at which the rotational speed changes greatly increases, and the rotational speed of the component whose frequency changes frequently decreases, so people who are exposed to this type of wind are less likely to feel unnatural. .

Embodiment FIG. 1 shows a method of blowing air using an air blower according to an embodiment of the present invention. Note that the configuration of the blower for realizing this blowing method is not limited to the conventional example shown in FIG. 2, but also a blower using a direct current type as the motor 1 is also possible.

In FIG. 1, by appropriately setting the duration of three types of rotation speeds (high, medium, and low), a ventilation pattern is formed in which the frequency of appearance increases as the rotation speed decreases. As is clear from the figure, the frequency of appearance increases as the rotation speed goes from high to low, and by combining random air blowing, it is possible to blow air closer to natural wind.

Effects of the Invention As is clear from the above embodiments, according to the present invention, by reducing the number of rotations of components whose periods change frequently,
It is possible to blow air so that people who are exposed to the wind do not feel unnatural.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the air blowing pattern of an air blower according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a conventional air blower, and FIG. 3 is a diagram showing the air blowing pattern. 1...Motor, 2...Rotation speed switching mechanism, 3...Rotation speed control circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A fan, a motor for rotating the fan, a rotation speed switching device for switching the rotation speed of the motor, and a rotation speed control circuit for measuring the duration of a certain rotation speed of the motor and then switching to another rotation speed. A method for blowing air of an air blower, wherein the rotational speed control circuit controls the frequency of occurrence of a high rotational speed state to be less overall than the frequency of appearance of a low rotational speed state.