JPH0656152B2 - Fan - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fan, and more particularly to an automatic stop mechanism when power is forgotten to be turned off during automatic operation corresponding to a change in room temperature.

(B) Conventional technology Conventionally, a fan that controls the rotation of a fan motor in response to changes in room temperature has a comfortable room temperature set, and the room temperature is higher than the set room temperature (hereinafter referred to as the set temperature). Continuous operation is performed, and conversely, when the room temperature is lower than the set temperature, the operation is stopped. That is, when the room temperature becomes lower than the set temperature, the operation is stopped, and therefore, there is a case in which the user feels that the power is off even though the power is on, and he / she sometimes goes out as it is.

However, in this state, after going out or the like, there was a safety problem because the fan that stopped was in continuous operation due to a change in room temperature, despite the absence of the user.

(C) Problems to be Solved by the Invention This invention has been made in view of the above circumstances, and when the user forgets to turn off the power switch when going out, the fan motor is prevented from rotating by detecting the room temperature. The purpose is to provide a fan that can be prevented.

(D) Means for solving the problem In the present invention, the state of a constant room temperature detected by the room temperature detecting means is timed by the time measuring means, and after a certain time has elapsed, the output signal of the stopping means. The fan motor is stopped by means of a room temperature detecting means for outputting an electric signal corresponding to a change in room temperature.
In a fan equipped with a drive control means for controlling the rotation of a fan motor according to an output signal output from a room temperature detection means, a time measuring means for measuring a state of a constant room temperature, and after a predetermined time set by the time measuring means has elapsed. The fan is characterized in that the drive control means is provided with a stop means for outputting a signal instructing to stop the fan motor, the stop means being electrically connected to the drive control means.

(E) Action When you forget to turn off the power switch and go out, etc.,
The stopping means acts to stop the fan motor after a set period of time.

(F) Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings, but the present invention is not limited to the following embodiments.

The fan motor (1) shown in FIG. 1 is attached to the upper end of the stand (2) so as to be movable in the left-right direction. The fan motor (1) has a fan (3) for blowing air on the rotary shaft.
Are rotatably mounted inside the protective mesh (4). An operation panel (6) is provided on the upper surface of the base (5) at the lower end of the stand (2). Power switch on the control panel (6)
(7), air flow adjustment switch (8), temperature detection operation switch
(9), the room temperature detecting means (10), and the time setting operation section (11) are arranged in order from the right side of the operation panel (6). Then, an operation display means (12) showing the respective operation states is arranged in the vicinity of the air volume adjusting switch (8) and the temperature detecting operation switch (9).

Next, the configuration of the electric control unit will be described with reference to FIG.

The drive control means (13) is composed of a temperature comparison circuit (14), an operation mode switching circuit (15), and a fan motor drive circuit (16). The temperature comparison circuit (14) is electrically connected to the room temperature detection means (10) and the operation mode switching circuit (15), and the room temperature (set temperature) set in the temperature comparison circuit (14) is used as a reference, The operation mode signal is output to the operation mode switching circuit (15). The operation mode switching circuit (15) is electrically connected to the power-off switch (7), the air volume adjustment switch (8), the temperature detection operation switch (9) and the fan motor drive circuit (16), and each switch is connected. Fan motor (1) in selected operation mode
A drive signal is output to the fan motor drive circuit (16) to drive the. (17) is a time measuring means, which is composed of a time measuring circuit (17a) and a set time variable circuit (17b) including a time setting operation unit (11), and is electrically connected to the operation mode switching circuit (15). (1
8) is a stop means, and the time measuring means (17) is a set time variable circuit (17
A signal for instructing to stop the fan motor (1) is output to the drive control means (13) by the time-up signal output after the time set in b) has elapsed.

Next, the operation of this embodiment will be described with reference to FIG.

First, the operation when the room temperature changes as shown in FIG. 3 (A) will be described.

It is operated in the strong wind operation mode, the room temperature begins to drop gradually, and the first temperature set in the temperature comparison circuit (14)
When the temperature falls below the set temperature, the temperature comparison circuit (14) outputs an operation mode signal to the operation mode switching circuit (15), and the operation is switched to the cool air mode. At this time, at the same time, the operation mode switching circuit (15) outputs a time measurement start signal to the time measurement means (17), and the time measurement circuit (17a) starts the time measurement after being initialized. Then, if the room temperature does not fall below the second set temperature within the time set by the set time variable circuit (17b), it is regarded as a constant room temperature state, and if the set time and the operating time after switching the operating mode match, The time keeping means (17) is the stopping means (18)
The time-up signal is output to. By this means stop means
A signal (18) outputs a signal for instructing the drive motor (13) to stop the fan motor (1), and the fan motor (1) stops, that is, the operation stops. After this, as shown in FIG. 3 (A), the operation is not performed again even if the room temperature rises. Fig. 3
As shown in (C), when the room temperature changes to three set temperatures or less in a short time, the operation mode is switched and the timing is started at the time when the room temperature changes to the set temperatures or less. That is, when the operation is performed in the strong wind mode and the room temperature first falls below the first set temperature, the mode is switched to the cool wind mode, and at the same time, the time measuring means (17) starts the time measurement after being initialized once. Then, when the room temperature further decreases within the set time and becomes equal to or lower than the second set temperature, the operation mode becomes a breeze. At this time, similarly to the above, at this time, the time measuring means (17) is initialized again, and the time is measured thereafter. Similarly, the room temperature falls within the set time and the operation is stopped at the third set temperature or lower. After that, if the room temperature does not reach the third set temperature or higher within the set time, the operation remains stopped.

If the room temperature rises and the operation is restarted after the operation is stopped as described above, the operation is restarted by operating the temperature detection operation switch (9) or the air volume adjustment switch (8). To be done.

Further, it may be configured to add a timer for driving for a limited time such as when going to bed.

(G) Effect of the Invention As described above, according to the present invention, it is possible to prevent forgetting to turn off the power supply, and to eliminate the inconvenience that the operation is stopped due to the temperature change only for a short time. .

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a block diagram showing a configuration of an electric control section of the embodiment, and FIGS. 3 (A) and 3 (C) are graphs showing changes in room temperature during operation of the embodiment. Graph showing Fig. 3
3B and 3D are operation explanatory graphs showing the operation of the embodiment corresponding to FIGS. 3A and 3C, respectively. (1) ...... Fan motor, (10) ...... Room temperature detection means, (13) ...... Drive control means, (17) ...... Timing means, (18) ...... Stopping means.

Claims (1)

[Claims] 1. A fan provided with room temperature detecting means for outputting an electric signal corresponding to a change in room temperature, and drive control means for controlling rotation of a fan motor according to an output signal output by the room temperature detecting means. By electrically connecting to the drive control means, the time control means for measuring the state of No. 1 and the stop means for outputting a signal instructing the drive control means to stop the fan motor after a certain time set by the time measurement means have elapsed. An electric fan characterized by being provided.