JP2599542B2 - Remote control ventilation fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control ventilation fan provided in a kitchen or the like whose operation is controlled by operating a remote control hand switch.

[0002]

2. Description of the Related Art In recent years, in order to facilitate the operation of a ventilation fan provided at a high place such as a kitchen, a remote control ventilation fan which can be operated by a remote control hand switch has become widespread.
Hereinafter, a conventional remote control ventilation fan will be described with reference to FIGS. As shown in FIG.
The main body 101 of the range hood is installed above the hood, and a remote control hand switch 102 independent of the main body 101 is placed on the hand side for easy operation.

The remote control hand switch 102 includes a changeover switch 104 for selecting operation / stop of a fan 103 built in the main body 101, and a transmission code judging means 105 for encoding the contents of the operated changeover switch 104. , A transmission circuit 106 for transmitting the code.

Further, the main body 101 is provided with a receiving circuit 107 for receiving a code from the transmitting circuit 106, an operation determining means 108 for determining the received code, and a driving circuit 109 for operating / stopping the fan 103. Was.

The operation judging means 108 is realized by a microcomputer 110, and the transmission code judging means 105 is realized by a microcomputer 111.

[0006] The operation of the remote control ventilation fan having the above-described configuration will be described below. First, in the remote control hand switch 102, the state of the changeover switch 104 is checked in step 51, and if "ON", the process proceeds to step 52, where the transmission code determination means 106 selects the "ON" code. Thereafter, the process proceeds to step 53, where the code of “ON” is emitted by the infrared ray through the transmission circuit 102,
Return to 1.

In step 51, the changeover switch 1
If the state of 04 is not “ON”, the process proceeds to step 54.
Then, in step 54, it is determined whether or not the state of the changeover switch 104 is "OFF". If "OFF", the process proceeds to step 55, where the transmission code determination means 106 selects the "OFF" code. Thereafter, the process goes to step 56, in which the "OFF" code is emitted by infrared rays through the transmission circuit 102, and then the process returns to step 51.

Next, the operation of the main body 101 will be described. First, the code emitted from the remote control hand switch 102 is received by the receiving circuit 107, and the code is input in step 57.

In step 58, it is determined whether or not the code is "entered".
In step 59, it is determined whether the fan 103 is operating. If it is operating, the process returns to step 57. If it is determined in step 59 that the fan 103 is not operating, step 6 is performed.
After operating the fan 103 at 0, the process returns to step 57.

If the code is not "ON" in step 58, the process proceeds to step 61. In step 61, it is determined whether the code is "OFF". If "OFF", the process proceeds to step 62. Then, in step 62, the fan 10
It is determined whether or not 3 is stopped. If it is stopped, the process returns to step 57. If it is determined in step 62 that the fan 103 is not stopped, the process returns to step 57 after stopping the fan 103 in step 63.

If the code is "OFF" in step 61, the process returns to step 57.

[0012]

In such a configuration of the conventional remote control ventilation fan, when the gas stove 100 is used for cooking, the temperature of the ventilation fan main body 101 and the remote control hand switch 102 rises due to heat generated from the gas stove 100. . However, in normal use, the ventilation fan main body 101 has no abnormality and does not cause a problem. However, since the remote control hand switch 102 is easy to install and move, the user accidentally approaches the gas stove 100 too much and abnormally heats up. Could be damaged.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a remote-control ventilation fan that is not damaged by heat even if a user uses the remote-control hand switch incorrectly.

[0014]

In order to achieve the above object, a remote control ventilating fan according to the present invention has a temperature detecting element having a conductive characteristic which changes in response to temperature, a remote control hand switch provided with a transmitting circuit, and the temperature detecting switch. A warning device that performs a warning based on the detection signal of the element, and a ventilation fan main body provided with a receiving circuit, and when the temperature of the remote control hand switch becomes abnormal, a warning is issued by the warning device. I do.

[0015]

According to the present invention, when the user mistakenly places the remote control hand switch near the gas stove, the temperature of the remote control hand switch rises to an abnormal temperature. Then, a signal is transmitted from the transmission circuit to the reception circuit provided in the ventilation fan main body in accordance with the detection signal, and a warning device is activated by the signal received by the reception circuit to issue a warning, thereby notifying the user of the abnormality.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, a range hood main body 2 is installed above the gas stove 1, and a remote control hand switch 3 independent of the main body 2 is located on the hand side for easy operation. The remote control hand switch 3 includes a changeover switch 5 for selecting operation / stop of the fan 4 provided on the main body 2, a temperature detection element 6 whose conductivity changes in response to temperature, and a temperature detection element 6. It incorporates a temperature conversion circuit 7 for converting a change in conductivity characteristics into a voltage change, a changeover switch 5, transmission code determination means 8 for coding the contents of the temperature conversion circuit 7, and a transmission circuit 9 for transmitting the code. Was.

The main body 2 includes a receiving circuit 10 for receiving a code from the transmitting circuit 9, operation determining means 11 for determining the code received by the receiving circuit 10, and a driving circuit 12 for operating and stopping the fan 4. And a warning device 13 for notifying an abnormality of the remote control hand switch 3.

The operation judging means 11 is realized by a microcomputer 14, and the transmission code judging means 8 is realized by a microcomputer 15.

The operation of the remote control ventilation fan having the above configuration will be described.
Input the signal of the temperature detection element 6 through the temperature conversion circuit 7. Next, in step 22, the input value is changed to the reference value (1
05 ° C.) or less, and if it is less than the reference value, the process proceeds to step 23. In step 23, the state of the changeover switch 5 is confirmed. At step 8, the code of "ON" is selected. Thereafter, the process proceeds to step 25, in which the code of “ON” is emitted by infrared rays through the transmission circuit 9, and then the process returns to step 21.

In step 23, the changeover switch 5
If the state is not "ON", the process proceeds to step 26. In step 26, it is determined whether or not the state of the changeover switch 5 is "OFF". If "OFF", the process proceeds to step 27. And select the “OFF” code. Thereafter, the process proceeds to step 28, where the ""
After the code "OFF" is emitted by infrared rays, the process returns to step 21.

If it is determined in step 21 that the temperature is equal to or higher than the reference temperature, the process proceeds to step 29, where the transmission code determining means 8
In step 30, the code of "abnormal" is selected. In step 30, the code of "abnormal" is transmitted through the transmission circuit 9, and the process returns to step 21.

Next, the operation of the main body 2 will be described.
The code emitted from the remote control hand switch 3 is received by the receiving circuit 10, and the code is input in step 31.
Then, in a step 31, it is determined whether or not the code is "abnormal".
After sounding the buzzer by the warning device 13, step 3
Returning to step 1, if it is determined in step 31 that the code is not "abnormal", the process proceeds to step 34.

In step 34, it is determined whether or not the code is "entered".
In step 35, if the fan 4 is not operating, the process returns to step 31 after operating the fan 4 in step 36.

In step 34, the code is "entered".
If not, the process proceeds to step 37, where it is determined whether or not the code is "OFF". If "OFF", the process proceeds to step 38. In step 38, it is determined whether the fan 4 is stopped. If so, the process returns to step 31.

If it is determined in step 38 that the fan 4 is not stopped, the process returns to step 31 after stopping the fan 4 in step 39.

If the code is "OFF" in step 37, the process returns to step 31.

[0028]

As is apparent from the above embodiments, according to the present invention, the temperature abnormality is detected by the remote control hand switch, and if it is determined that the temperature is dangerous, a warning is issued by the main body and the user is informed. In the wrong position,
It is possible to provide a remote control ventilation fan which is not damaged by heating.

[Brief description of the drawings]

FIG. 1 is a block diagram of a remote-control ventilation fan according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation program of the main body.

FIG. 3 is a flowchart showing an operation program on the remote control hand switch side;

FIG. 4 is a block diagram of a conventional remote control ventilation fan.

FIG. 5 is a flowchart showing an operation program of the main body.

FIG. 6 is a flowchart showing an operation program of the remote control hand switch.

[Explanation of symbols]

 2 body 3 remote control hand switch 6 temperature detection element 9 transmission circuit 10 reception circuit 13 warning device

Claims (1)

(57) [Claims] 1. A temperature detecting element whose conductivity changes in response to temperature, a remote control hand switch provided with a transmitting circuit, a warning device for giving a warning based on a detection signal of the temperature detecting element, and a receiving circuit. A remote control ventilator, comprising: a main body of a ventilating fan, wherein a warning is issued by the warning device when the temperature of the remote control hand switch becomes abnormal.