JPH0534019Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a temperature control device for an electric kotatsu.

Configuration of conventional examples and their problems Conventional electric kotatsu temperature control devices have the function of ``automatically keeping the temperature inside the kotatsu constant'' using a thermostat or voltage phase control device. It does not have a function to automatically control the temperature inside the kotatsu to an appropriate temperature in response to changes in room temperature. Therefore, there is a problem in that the user cannot obtain a comfortable temperature unless the user adjusts the temperature according to changes in the room temperature.

Purpose of the invention In order to eliminate the above-mentioned problems, the purpose of the invention is to automatically obtain a comfortable temperature inside the kotatsu according to changes in the room temperature.

Structure of the invention In order to achieve the above object, the present invention uses a controller to memorize the appropriate temperature inside the kotatsu for each room temperature in advance, and sets the room temperature and the temperature inside the kotatsu at the plug of the power cord located outside the kotatsu. The temperature is detected by a first temperature detector provided in the kotatsu and a second temperature detector provided inside the kotatsu, and the amount of heat generated by the heating element is controlled based on this detection.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below. In Fig. 1, 1 is a kotatsu wooden frame, 2 is a heating element, 3 is a temperature sensing thermistor installed inside the kotatsu as a second temperature detector, 4 is a controller with a built-in microcomputer (hereinafter referred to as microcomputer), 5 is an indoor temperature sensing thermistor which is set as a first temperature detector in the plug part of a power cord located outside the kotatsu which is electrically connected to an external power source to supply power to the heating element 2. Figure 2 shows the relationship between the temperature inside the kotatsu and the indoor temperature that humans feel is comfortable. The relationship between the room temperature and the comfortable temperature inside the kotatsu is stored in the microcomputer in advance, and the temperature is sensed by the thermistor 3 for sensing the inside temperature of the kotatsu and the thermistor 5 for sensing the room temperature, and the temperature of the heating element 2 is controlled by the temperature controller 4. It controls the output and the temperature inside the kotatsu according to instructions from the microcomputer. The circuit is shown in FIG. 3, where 6 is an A-D converter, which converts the detected temperatures detected by the first and second temperature detectors 5 and 3 into digital signals and sends them to the arithmetic element 7.
to be applied. This arithmetic element 7 reads out the temperature inside the kotatsu, which is set in advance according to the detected indoor temperature, and controls the power control element 8 to control the amount of heat generated by the heating element 2 so as to reach that temperature.

Effects of the invention As described above, according to the invention, the first temperature detector for sensing room temperature is provided in the plug part outside the kotatsu. As a result, the room temperature and the temperature inside the kotatsu are detected by the first and second temperature detectors, and the comfortable temperature inside the kotatsu is automatically determined according to the room temperature. It is convenient because the user does not need to adjust the temperature.

[Brief explanation of the drawing]

Figure 1 is an overall configuration diagram of one embodiment of the present invention, Figure 2
The figure is a diagram showing the relationship between the temperature inside the kotatsu and the room temperature, and FIG. 3 is the circuit diagram. 3... Thermistor for sensing temperature inside the kotatsu (second temperature detector), 4... Controller, 5... Thermistor for sensing indoor temperature (first temperature detector).

Claims (1)

[Scope of utility model registration request] A first temperature detector that senses the indoor temperature is provided at the plug of the power cord located outside the kotatsu, a second temperature sensor that senses the temperature inside the kotatsu, and a plurality of pre-measured temperature sensors for each room temperature. storage means storing a predetermined optimum temperature in the kotatsu, and based on the optimum temperature read from the storage means according to the room temperature detected by the first temperature detector, the second A temperature control device for an electric kotatsu, characterized by controlling the amount of heat generated by a heating element within the kotatsu so that the temperature detected by a temperature detector matches the appropriate temperature.