JPS6328375Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a warm air type electric kotatsu in which the heater unit is formed much thinner than conventional ones, and the circuit including the fan is cut off when the high-output heater is turned off.

The heater unit of a conventional hot air type electric kotatsu is as shown in Japanese Patent Application Laid-open No. 59-66653, and this is explained with reference to FIG. Of course, it is inside the heater 4. Since the motor 1 is attached to the reflector via the frame 5, it is not formed to be so thin, and furthermore, hot air may be supplied as shown by the arrow, but in places where there is no heater, cold air is used instead. It was not always comfortable as hot air was supplied unevenly and at right angles to the air.

Additionally, two heaters, one high output (approximately 400W) and one low output (approximately 100W), are normally used for a kotatsu, so if all the lights are turned on or a high output heater is turned on, it will not cause much trouble. However, if the high-output heater goes out of power and only the low-output heater turns on, the air supplied by the fan is closer to cold air, and the human body hardly feels it as warm air and is comfortable. That is not possible.

This project was devised to solve the above problems, and it can be made much thinner than the conventional one, and when only the low-output heater lights up, the fan is stopped and no air is blown. aim at something.

For this reason, in this proposal, a high-output heater and a low-output heater were attached to the reflector, and a motor was also attached, and a fan was attached inside the reflector to make it thinner, and the high-output heater was eliminated. A circuit including a heater, a motor, and a fan is configured to stop the fan at the same time.

One embodiment shown in the drawings will be explained below.
Reference numeral 11 is a rectangular, dish-shaped reflector that is fixed to the wooden frames A and B of the kotatsu body with screws CD. The peripheral edge of this reflective plate has an inclined surface 11a that is inclined inwardly (upwards). Further, a recess 12 is provided in the center of the reflecting plate, and the motor 13 is fixed by appropriate means using this recess. On both sides of the motor, there are elongated spaces 14, 1 spaced apart from each other.
5 and heaters 16 and 17 facing this space.
is installed. For example, the heater 16 is
The heater 17 has a high output of 400W, and the heater 17 has a low output of 100W. Reference numeral 18 indicates a control section provided on one side of the reflecting plate 11.

A plurality of half-cut and raised portions 19, 20, and 21 are provided on three sides of the reflector except for one side on which the control portion 18 is attached. A fan 22 is attached to the motor 13, and this fan is provided inside the reflecting plate 11.

Reference numeral 23 denotes a heat shield plate, which is attached to the inside (above) the reflector, and forms a chamber 24 together with the reflector. 2
5 indicates a protective guard. The plurality of outer wing sections 26 of the fan 22 are located directly above each of the heaters 16 and 17, and the inner wing section 27 is located directly above the motor 13.

However, the circuit including the heaters 16, 17 and the motor 13 is as shown in FIG. A thermostat 30 is connected to the circuit including the heater 16 and the heater 17 and turns the motor 13 and the heater 16 on and off.

Next, we will discuss the function of this hot air type electric kotatsu.

The heaters 16 and 17 are turned on and the motor 1 is heated.
When the fan 3 rotates, the fan 22 also rotates, and is heated by the heater, and the space 14, 1 is heated from the outside.
5, the hot air trapped in the chamber 24 is transferred to the inclined surface 11a of the reflector 11 by the outer wing portion 26 of the fan 22.
Warm air is supplied from the blow-off holes formed by the half-cut and raised portions 19, 20, and 21 formed in the air. Although the reflector 11 does not have a particular reflective effect, it has the voids 14 and 15 as described above, so
Room 2 is heated by heating the outside air from these empty spaces with a heater.
4 and is supplied as hot air from the blow-off hole by the rotation of the fan. The hot air at this time is generated by the hot air in the room 24, so it is supplied to the user more evenly than in the conventional case.
Since the wing section 26 is located directly above each heater, it is heated by the heater and furthermore, warm air is supplied to it.

In addition, the inner wing portion 27 is used for cooling the motor 13 to prevent the motor from overheating.

However, if the temperature becomes too high during use, the thermostat 30 is activated, but in this case, the high-output heater 16 is turned off and the motor 13 is also stopped, so the fan 22 is activated only by heating the low-output heater 17. It's efficient without having to do it.

As described above, according to the present invention, the fan is located inside the reflector, and the motor is attached to the reflector, so the heater unit is made thin, and even hot air is constantly supplied and the motor Since the fan does not overheat and the fan does not rotate when only the low-output heater is turned on, hot air can always be efficiently supplied.

[Brief explanation of the drawing]

Figure 1 is a plan view of the main parts of the proposed kotatsu, Figure 2 is a sectional view taken along the - line in Figure 1, Figure 3 is a schematic connection diagram of the circuit including the heater, and Figure 4 is a diagram of the conventional kotatsu. FIG. 3 is a schematic vertical sectional view of the heater unit. 11...Reflector, 13...Motor, 14, 15
... Blank space, 16, 17 ... Heater, 19, 20,
21...half cut-out part, 22...fan, 23...
…Heat shield plate.

Claims (1)

[Scope of utility model registration request] A reflecting plate formed in the shape of a rectangular dish, having a sloping part slanting inward at the periphery, having a blowing hole provided in the slanting part, and having elongated parallel spaces spaced apart from each other; and this reflecting plate. a motor installed in the center of the reflector, high-output and low-output heaters attached to the reflector facing the blank space, and rotated by the motor, and blades attached to the inner side of the reflector serve as heaters for each of the heaters. The fan is located directly above the fan, and a heat shield is attached to a reflector to cover the fan, and includes a heater, a fan, and a motor to stop the fan when the high-output heater is depleted. A hot air type electric kotatsu consisting of a circuit.