JPS6153496A - Fan - Google Patents

Abstract

PURPOSE:To prevent accidental over-cool of a sleeping human body when a fan is kept in continuous operation, by providing a controller for transmitting a control signal set according to the detected temperature given from a room temperature detection circuit to a motor control circuit so as to automatically control a fan driving motor in response to any change in the room temperature. CONSTITUTION:The first set temperature Ton and the second set temperature Toff are input by means of an input key 11, and those input data are stored in a memory 8. CPU7 reads the room temperature T data from a temprature sensor 4 via a room temperature detecting circuit 5 and an input circuit 9, compares said data with the first and second set temperature Ton, Toff given from the memory 8. When a room temperature T exceeds Ton during stop of a fan, ON signal is transmitted from an output circuit 10 to a motor control circuit 3 to start a fan drive motor 2. When the room temperature T drops beyond Toff, OFF signal is transmitted from the output circuit 10 to the motor control circuit 3 to stop the fan drive motor 2. Thus, any accidental over-cool during sleeping time due to a continuously operating fan can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric fan equipped with a motor control circuit that controls on/off and rotational speed of a fan drive motor.

[Conventional technology]

In conventional electric fans, the speed switching of the fan drive motor to adjust the air volume and the power on/off control are performed manually, and the power is automatically turned on and off as time passes using a time switch. has been commonly used.

[The problem that Hatsu EJA is trying to solve] However, with these conventional electric fans, if you fall asleep while the fan is running and the temperature suddenly drops during that time, you can catch a cold or die from heart attack in 1% of cases. Several accidents such as this occur every year.

This invention solves the above problems by automatically controlling the fan drive motor according to changes in room temperature.
It aims to provide 11.

[Failure to solve the problem]

The electric fan according to the present invention is configured such that an output control signal from a temperature sensor and a room temperature controller that detects the room temperature based on the output signal of the temperature sensor is applied to a fan drive motor control circuit.

[Effect]

In this invention, the fan drive motor is turned on according to the detected temperature from the room temperature detection circuit, that is, the room temperature.

A control signal for turning off or changing the rotational speed by one rotation is created based on input data to the controller and a preset and stored program, and the fan drive motor is controlled by this signal.

〔Example〕

FIG. 1 is a block diagram showing the configuration of a control section of an embodiment of an electric fan according to the present invention. In the figure, (1) is the rotating fan of the electric fan, and (2) is the fan drive mode.

(3) is the Tanabata control circuit, (4) is the temperature sensor, (
5) is a room temperature detection circuit that detects the room temperature based on the output signal from this sensor (4), (6) is a controller such as a microcomputer, (
7) is its central processing unit (hereinafter referred to as CPU).

(8) is the memory of the controller (7), +9 is the memory of the controller (7)
) input circuit.

α1 is the output circuit of the controller (7), and υ is the input operation key (
(hereinafter simply referred to as the input key), α is the display device.

Next, its operation will be explained. An example will be described in which the power supply is controlled to be turned on and off based on changes in the room temperature. In this case, in the memory (8) of the controller (6).

The detected temperature T from the room temperature detection circuit (5) is the first predetermined temperature T, as shown in FIG. n or more, the ON signal is turned on at the second predetermined temperature T08. A program is stored that operates the CPU (7) to output an off signal in the following cases. First, the above T and n and T02. input the value and store the data in the memory (8). In this state, cPU (71 reads the room temperature data T from the temperature sensor (4) through the room temperature detection circuit (5) and input circuit (9), and uses that data and
The first and second set temperature data T from March 8),
Compare T with on off, and when the fan is stopped, T becomes more dog than T. When the on signal is output from the circuit σ [to the motor control circuit (3)
output to start the fan drive motor (2). The room temperature drops while the electric fan is operating, and the room temperature data T becomes T08. When the voltage drops below, the off signal is output from the full output circuit α port to the motor control Hj circuit (3), and the fan drive motor (2
) to stop. In this way, for example, fan 1 of an electric fan
Even if you fall asleep while turning 1+, it can be automatically stopped when the room temperature drops, and when the room temperature rises again, the electric fan (1) f will be automatically restarted.

Next, a full explanation will be given of an embodiment in which the position of the electric fan is changed depending on changes in room temperature. In this case, as shown in Figure 3, when the room temperature T is T1 or more, the air volume F3 is 11 to 1.
2 and between T2 and T3, cPU (71
A program for operating the is stored. So, by Ikaki-dυ.

Above T1. T2. T3 and Fl, F2. Input the value of F3 and set the data by storing it in the memo (January 8). In this state, CPU (71 is room temperature data T
Read.

Each set point (T1.Fl) in Fig. 3 corresponding to that value (
T2 z '2) (T3 m '5) or F line s CTss CTss F5) Calculate the air volume F on the F2 warehouse and use the fan drive motor to output this air volume F. A control signal for instructing the full rotational speed (2) is output to the motor control circuit (3) to control the speed of the fan drive motor (2). In this way, the air volume is automatically changed according to changes in room temperature.
Even if you fall asleep while turning the button, the air volume can be automatically reduced as the room temperature drops.

Next, an embodiment will be described in which the operating cycle of the electric fan is changed depending on changes in room temperature. in this case.

In the memo January 8), as shown in Fig. 4(b), the fan drive motor (2) is set to a predetermined on/off ratio R-pm/p.
On/off control is performed, and its operation cycle p6. Figure (a)
As shown, each set room temperature T1o, T11. For T1°, PP, P, T or more is P, T or more than 10
' 11 12 1
io 12 lower is P12'T10"""113
Between T11 and T1□, a program is stored that operates the CPU (7) to output a control signal that is inversely proportional to the chamber iM'r. So, depending on the input key, the above on/off ratio R.

Input the values of TT, T and Plo"11"12 above, and store and set the data in the memo January 8). In this state, the CPU (7) reads the room temperature data Ti and reads the set T10'T11'``12'' 10
3 along the graph shown in FIG. 4 determined by 11'P.

The entire cycle P corresponding to the detected room temperature T is calculated, and with this cycle, the fan drive motor (2) is activated at the on/off ratio of the set value R.
A split I signal that turns on and off is output to the motor control circuit (3). In this way, the operating cycle M is automatically changed according to changes in the room temperature, and the operating cycle is automatically lengthened as the room temperature decreases, thereby making it possible to lengthen the fan stop period.

Note that the on-time T is set to a predetermined constant value.

If the central operating period P is changed in accordance with changes in the room temperature as described above, even more effective control can be achieved.

Each embodiment has been described above in which control is performed independently according to each pattern in response to changes in room temperature. All these patterns are stored in the memory (8) and input from the input key -συ. It is also possible to select or combine them as appropriate based on input or other conditions.

〔Effect of the invention〕

As described above, this invention fully automatically controls the fan drive motor according to changes in room temperature, so even if you fall asleep while the fan is running and the room temperature drops during that time, you will not get too cold. It has all the features that allow you to get a fan that won't wake up.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the bottom of the control section of an embodiment of the electric fan according to the present invention, and FIGS. FIG. 4 is a diagram illustrating the operation of each embodiment. In the figure, (2) is a fan drive motor, (3) is a motor control circuit, (4) is a temperature sensor, and (5) is a room temperature detection circuit. (6) is a controller.

Claims (4)

[Claims] (1) In an electric fan equipped with a fan drive motor, a motor control circuit that controls on/off and rotational speed of the motor, a temperature sensor, a room temperature detection circuit that detects the room temperature based on the output signal of this temperature sensor, and this room temperature detection. An electric fan comprising a controller such as a microcomputer that outputs a control signal to the motor control circuit according to a temperature detected from the circuit. (2) A control signal according to the detected temperature from the room temperature detection circuit turns on the fan drive motor at a first predetermined temperature and turns it off at a second predetermined temperature lower than the first predetermined temperature. The electric fan according to claim 1, wherein the control signal is a control signal. (3) The control signal according to the detected temperature from the room temperature detection circuit is a signal that increases the speed of the drive motor in proportion to the temperature between predetermined values.
The electric fan mentioned in section. (4) The control signal according to the detected temperature from the room temperature detection circuit is a signal that turns on and off the fan drive motor at a predetermined on/off ratio at a cycle that decreases as the temperature rises. An electric fan according to claim 1.