JPS59155598A - Fan - Google Patents

Abstract

PURPOSE:To enlarge the using range of the fan by a method wherein a timer, delaying a fan motor to stop it, and a temperature switch, stopping the fan when the atmospheric temperature of the fan has become a predetermined temperature or a temperature difference, are provided in the fan. CONSTITUTION:A control circuit 4 is connected to an output circuit 3, controlling the rotation of the fan motor 2, and the control circuit 4 is connected with the timer 5, setting the operating time of the fan motor 3, a temperature switch 6, setting a temperature to stop the fan motor 3, and a temperature sensor 7. According to this method, when the temperature switch 6 and the timer 5 are set simultaneously, the fan is stopped by the instrument in which the set value thereof has arrived at the preset value earlier, therefore, the using range of the fan may be enlarged as compared with the fan of prior art which is equipped only with the timer.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fan motor and an electric fan having a fan rotated by the fan motor.

Conventional configurations and their problems Some conventional electric fans are provided with a timer to delay the rotation of the fan motor.

The operation of this timer is to automatically stop the fan after it has been running for a certain period of time.
There are some that last up to 8 hours. By the way, there are two main purposes for using such a timer.

One of them is simply a delay operation. The other case is to use it as a temperature switch. In other words, a timer is used in anticipation of the room temperature decreasing after a predetermined period of time. It is said that the reason why we feel cool when exposed to the wind from an electric fan is because the moisture on the surface of our skin evaporates and absorbs the heat of vaporization. And if your skin is exposed to the wind for too long, too much heat will be forcibly transferred from the surface of your skin, which is not good for your health. From this point of view, it is dangerous to use a long timer operation for the purpose of simply eliminating the discomfort of sleeping.

Even if the ambient temperature does not drop, continuous exposure to the wind can force moisture and heat from the skin surface, which is especially dangerous for elderly people and babies who have fallen asleep. In this way, the timers currently used in electric fans have to function like temperature switches in one sense, and on the other hand, they can be used to forcibly stop the fan motor when a certain time has elapsed. The current situation is that current electric fans that simply have a timer are no longer able to meet these diverse demands.

OBJECTS OF THE INVENTION The present invention obviates these conventional drawbacks,
To provide an electric fan which retains the advantages of a conventional timer while solving the problem of catching a cold because the electric fan does not stop even when it becomes cool by providing a temperature switch.

Structure of the Invention In addition to the conventional timer operation, the electric fan of the present invention is provided with a means for adjusting the stop operation of the electric fan depending on a change in ambient temperature,
This expands the scope of use of the electric fan.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 shows a block diagram of an example of an embodiment of the circuit based on the present invention, in which 1 is a fan of an electric fan, 2 is a fan motor that drives the fan, 3 is an output circuit that controls the rotation of the fan motor, 4 is a control circuit including a microcomputer, 5 is a timer that sets the operating time of the fan motor 3, 6 is a temperature switch that sets the stop temperature of the fan motor 3, and 7 is a temperature sensor that transmits the ambient temperature state to the control circuit. be. FIG. 2 is a diagram showing an example of an operation display board for an electric fan when the temperature difference method is applied to the temperature switch 6. In Figure 2, 10 is a switch that stops the fan, and 11 is a switch that changes the strength of the fan's wind from 1 (weak), 2 (medium), and 3 (strong) each time it is pressed. There is a strong wind and then it returns to weak again. In other words, it repeats cyclically.The light emitted on 14.16.16 indicates which wind strength is currently selected. These are diodes (hereinafter referred to as LEDs), and 14 indicates that weak is selected, 15 indicates medium, and 16 indicates that strong is selected.
It is D. These 10, 11, 14, 15゜1
The operation display section 6 for starting or manually stopping the operation of the electric fan is omitted in the block diagram of FIG. 1 to simplify the explanation. 12 is a switch that sets the delay time of the electric fan; 17, 18.
Reference numeral 19 is an LED indicating which time has been selected, and in this example, 17 indicates that the timer time has been set to 1 hour, 18 indicates 2 hours, and 19 indicates that the timer time has been set to 6 hours. Each time the switch 12 is pressed, the timer is set for 1 hour, 2 hours, and 6 hours, and the timer is canceled in this order. The timer operation display section consisting of these 12, 17, 18, and 19 is represented by 5 in FIG. Next, in Fig. 2, 13 is a switch for setting the temperature difference, 20°, 21.22 is an LED that indicates which temperature difference has been selected, and in this example, 2o is a temperature difference of 0.5K, 21 is an LED indicating that the same 1 and 22 are selected, respectively. Let me explain a little about how the fan behaves when this temperature difference is set. Assume that a temperature difference of 1K is selected by switch 13. The ambient temperature at that time is 30'
C, this fan is 3O-1=29 ambient temperature is 29
When the temperature reaches ℃, it will automatically stop. When you set a temperature difference with this switch 13, the fan will automatically stop when the ambient temperature drops by the set temperature difference from the ambient temperature at the time of setting. This operation is shown in Figure 1. The information necessary to perform this control is obtained from the temperature sensor 7.

As described above, in addition to the conventional general timer, this embodiment has the feature of stopping the fan based on the temperature, and by creating the relationship shown below, the delay of the fan described above can be achieved. It becomes possible to satisfy various demands regarding operation. Figure 3 shows the change in ambient temperature and the remaining amount of the timer at each time when both the temperature and timer are set at the same time.
It shows the time from 2 o'clock to 4 o'clock in the morning. 20 is a graph showing the change in ambient temperature, and 21 is a graph showing the remaining time of the timer.

The horizontal axis shows time, the left vertical axis shows the ambient temperature, and the right vertical axis shows the remaining time of the timer. This example shows the situation when the timer is set to 2 hours and the temperature difference is set to 2K at 22:00 (10:00 p.m.). Such an example is commonly seen on summer nights when a fan is operated on a delayed basis for an elderly person or a baby. In other words, there is a restriction that it is dangerous to apply a fan to an elderly person or a baby for more than 2 hours even if the surrounding temperature does not drop, so first, a timer is used to regulate the time, and furthermore, even within that time, there is a sudden drop in temperature. If there is one, the fan will be turned off depending on the temperature. Therefore, in this kind of usage, the timer is generally short. In Figure 4, the temperature difference of 2K occurs at 3 in the morning.
The timer has already stopped at 24 o'clock, so the electric fan has stopped at 24 o'clock. In this case, 1.7)
In this example, the timer automatically stopped the fan after it took a long time for the temperature difference to reach 2, but in contrast, in the case of a night in the suburbs, the ambient temperature drops rapidly over time. , the temperature difference will be 2 within 2 hours, and it is quite conceivable that the electric fan will change its size depending on the temperature. In this case, the fan will stop earlier depending on the temperature, reducing the chance of catching a cold. Next, FIG. 4 is basically the same as FIG. 3, but in this case, the timer is set to 6 hours and the temperature difference is set to 2K. 3o is the change in ambient temperature, 31 is the remaining time of the timer, and this is the graph. ○Maybe it was a hot night and I had run the timer as long as possible, so I got a little worried, so I set the temperature difference to 2 and went to bed. Dew. However, if only the timer was used, the fan would not have stopped until 4 a.m., but the ambient temperature suddenly dropped near midnight, and around 2 a.m., there was a temperature difference of 2,000,000, and the fan stopped. If I had stayed around until 4 o'clock, I might have caught a cold or woken up cold. On the other hand, even if the temperature does not drop suddenly as shown in Figure 4, the timer will stop the fan at 4 o'clock, so when you wake up, you will be left exposed to the fan, which will alleviate problems such as feeling tired. Needless to say.

In the above embodiment, the fan operates according to the range of change in ambient temperature from when the temperature switch is set, but this could also be a temperature switch called Ambient Temperature ℃, which turns the fan on when the ambient temperature reaches the set temperature. It doesn't matter if it says it will stop.

In short, any element that incorporates changes in ambient temperature into a simple timer element may be used.

Effects of the Invention As described above, according to the present invention, when the temperature switch and timer are set at the same time, the fan stops when the temperature switch and timer reach the set value first. This eliminates the possibility of catching a cold due to running the timer too long, or feeling sick due to being exposed to the fan too much, as was the case when using only the temperature switch. With this advantage, it is possible to make the fan Jii machine perform a delayed operation.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a circuit according to an embodiment of the present invention, Fig. 2 is a front view of the operation display board of the electric fan of the same embodiment, and Fig. 3 is the operation of the electric fan when the electric fan is operated with a delay. FIG. 4 is an explanatory diagram showing the situation when the timer time is 6 hours and the temperature difference is 2. 1...Fan, 2...Fan motor, 4
...Control circuit, 5...Timer, 6...
...Temperature switch. Name of agent: Patent attorney Toshio Nakao and 1 other person
Figure 1, 5G7 Figure 3

Claims (1)

[Claims] The fan motor has a fan that rotates in the opposite direction, a timer that delays and stops the fan motor, and a temperature switch that stops the fan when the ambient temperature of the fan reaches a predetermined temperature or a temperature difference. Fan.