JPH0245696A - Blower - Google Patents

Abstract

PURPOSE:To enable oscillation to be performed of the same angle, even when a frequency is different, by providing a microcomputer which corrects the oscillating angle, arbitrarily set by a signal from a center detecting circuit and the preset time from a predetermined program, by the frequency. CONSTITUTION:When a power unit 27 is input, a microcomputer 32 detects a power source frequency, starting blowing action by a blowing instruction. Next, oscillation and its angle are input from an input circuit 36, thus the oscillating time of an oscillating motor 23 is set to the microcomputer 32. Further in case of the power source frequency being 50Hz different from the measured frequency, the power source is pulse-converted by a converter circuit 39, and by applying a correction to the oscillating time, oscillating action can be attained of the same angle for the frequency of 50Hz, 60Hz, whichever it may be.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a blower with an improved swing mechanism.

[Conventional example]

4 and 5 are diagrams showing a conventional blower shown in, for example, Japanese Utility Model Application Publication No. 55-132392. In the figures, (1) is the head of the blower, and (a is the outer casing of the head of the blower). The motor cover (3) that forms the
b) is attached to the tip of the rotating shaft f51.

(6) is a swinging gear device installed on the back of this motor, which has a gear (not shown) that rotates in conjunction with the rotating shaft (9) of the motor (3), and has a swinging start at the top. , a swing knob (7) for stopping, a crank (a) that rotates in conjunction with the gear at the bottom. (9) is a base that supports the blower head (1), (+ (1 is A neckpiece (II) provided between this base and the blower head (1)
) is a spindle that protrudes from the neck piece and is attached to the motor (3) via a motor mounting plate (12);
(13) is a rod that is attached at one end to this spindle and at the other end to the crank, and swings the blower head (1) at a predetermined angle in conjunction with the movement of the crank (8). Eggplant.

A conventional blower is configured as described above, and the power source is a motor (
3), the oscillating gear device (6) is interlocked, and the blades (a) are rotated and the blower head (1) is oscillated arbitrarily.

[Problem to be solved by the invention]

In the conventional blower as described above, the motor (3) of the blower head (1) uses an AC power source, and when the frequency is different, for example, 50)12 and 60H2, the rotation speed of the motor (3) is different. When the head was oscillated for the same amount of time, the rotation of the gear that interlocked with the rotating shaft (51) was different and the oscillation angle was different, so there was a problem that the air blowing conditions were different.

This invention was made to solve the problem,
The purpose is to obtain a blower that swings at the same angle even when the frequencies are different.

[Means to solve the problem]

The blower according to the present invention has a blower head equipped with blower blades rotatably mounted on a base, and includes a swinging motor having a rotating part and rotating the blower head; A center detection circuit provided in the rotating part of the swing motor, and a microcomputer that corrects the swing angle arbitrarily set based on the signal from the center detection circuit and the time set by a predetermined program. It has been established.

[Effect]

In this invention, by providing a microcomputer that corrects the swing angle according to the frequency, the swing angle becomes constant regardless of the frequency.

〔Example〕

FIG. 1 is a longitudinal sectional view of a blower showing an embodiment of the present invention;
FIG. 2 is a circuit diagram, and FIG. 3 is a flowchart showing the swing motor control process.
- (5) indicate the same or equivalent parts as the above conventional example2
0) is the electric fan, (21) is the base of this electric fan, (22)
(23) consists of a neckpiece provided at the upper end of this base so as to be movable up and down; and (23) an AC power supply which can be rotated in both forward and reverse directions by a swing motor provided within this neckpiece. (24
) is a joint that protrudes upward from this oscillating motor, and serves as a rotating portion (24a), which is connected to the blower head, which will be described later. (25) is a center detection circuit installed in the part of the joint that protrudes from the neckpiece (22), and controls based on the time from the center using, for example, an optical sensor, a Hall element, a contact point, etc. . (2
6) is the blower head provided at the tip of the joint (24), which consists of a motor (3) provided inside the motor cover (z) and a blade provided at the tip of the rotating shaft (4) of this motor. Furthermore, the electrical configuration is as shown in Figure 2 (27
) is the power supply, (28) to (3+) is the motor (3) ON
, a triac to be turned off, (32) a microcomputer, (33) a power supply circuit for this microcomputer and other output circuits, (34) a reset circuit,
(35) is a clock generation circuit, (36) is an input circuit such as an input key switch (not shown), and (37) is an output circuit, which includes, for example, an LED. (38) is a capacitor for the motor (3), and (39) is a conversion circuit that converts the power to a level that can be input to the microcomputer (32) and oscillates pulses.

In the blower configured as above, the power source (27
) is input, the microcomputer (32) detects the power frequency of, for example, 60142, and the oscillation and oscillation angle are input from the input circuit (36), which starts the air blowing operation in response to the air blowing instruction. After the swing time of the motor (23) is determined by a predetermined program, it is set in the microcomputer (32). Furthermore, in the case of 50112 where the power supply frequency is different from the measurement frequency, the conversion circuit (39) converts the power supply into pulses by half-wave rectification, measures the period of the power supply from the time from zero cross to zero cross, and calculates the above swing time. By applying the correction, it is possible to swing the head at the same angle in both 50H2 and 60H2. After this correction, the center detection circuit (25) detects the center, initializes the counter for the swing operation time, and if the center is not detected, when the swing time reaches the set time, the direction of the swing operation is changed. Invert. In this way, by determining the power frequency using the microcomputer (32) and correcting the swing time, the swing can be made at the same angle regardless of the frequency without using a power frequency converter. A blower is obtained.

〔Effect of the invention〕

As explained above, this invention has a blower head equipped with blower blades rotatably mounted on a base, and includes a swing motor having a rotating part and rotating the blower head. The swing angle is arbitrarily set using the center detection port provided in the rotating part of the swing motor, the signal from the center detection circuit, and the time set by the predetermined program. Since it is equipped with a microcomputer for correction, there is no need for frequency switching.
This has the effect of providing an easy-to-use blower.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a blower showing an embodiment of the present invention;
Fig. 2 is the same circuit diagram, Fig. 3 is a flowchart showing the oscillating motor control process, Fig. 4 is a perspective view of a conventional blower, and Fig. 5 is the same <side view showing the blower head of the conventional blower. It is a diagram. In addition, the same reference numerals in each figure indicate the same or equivalent parts.
4] is a blade, (2I) is a base, (23) is a swinging motor, (24a) is a rotating part, (25) is a center detection circuit,
(26) is the head of the blower, and (32) is the microcomputer.

Claims (1)

[Claims] In a blower head equipped with blower blades that is rotatably provided on a base, a swinging motor having a rotating part and rotating the blower head, and rotation of the swinging motor. It is characterized by being equipped with a center detection circuit provided in the center detection circuit, and a microcomputer that corrects the swing angle arbitrarily set based on the frequency based on the signal from the center detection circuit and the time set by a predetermined program. A blower.