JPS5825216Y2 - Hot air forced circulation type kotatsu - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot-air kotatsu in which a hot-air generator is installed inside the tower kotatsu to forcefully circulate hot air.

The present invention will be explained below with reference to the drawings. Reference numeral 1 denotes a main body of a tower kotatsu, which is composed of a top plate 2 and legs 3 that can be attached and suspended from the corners of the top plate.

Reference numeral 4 denotes a hot air generating unit for heating the inside of the tower kotatsu main body 1, which is installed on the lower surface of the top plate 2 by screws or the like.

The warm air generating unit is provided with a blower fan 6 in the ventilation duct 5 and a positive temperature characteristic resistance element 8 that generates self-heating in its blowing lower corresponding to the blower fan. Air sucked through the suction port 9 during driving passes through the ventilation duct 5 and passes through the positive temperature characteristic resistance element 8.
The air passes through the inside of the tower kotatsu body 1 to allow ventilation to circulate.

The positive temperature characteristic resistance element 8, which generates self-heating, exchanges heat with the air from the blower fan 6 associated with the element to warm the air, and discharges warm air from the blower lower. The resistance element has an electrode (not shown) for energization, and when it is installed in the ventilation duct 5, it must be installed with electrical insulation, and heat resistance must also be taken into consideration since it generates heat. It is necessary to attach the

Since it is necessary to securely fix the product to a limited number of mounting parts, it is desirable to use a resin molded product that can be molded into complex shapes. It is attached via a resin electrical insulating member 10 such as.

Reference numeral 11 denotes a thermally responsive element such as a temperature fuse, which is attached to the electrically insulating member 10 by providing a recess 12 or the like.

The thermally responsive element is for preventing the electric insulating member 10 to which the positive temperature characteristic resistance element 8 is attached from being deformed or burned out due to thermal influence when the positive temperature characteristic resistance element 8 generates abnormal heat. The activation of the thermally responsive element 11 cuts off the current supply to the positive temperature characteristic resistance element 8.

Of course, the positive temperature characteristic resistance element 8 has a property that the temperature does not rise above a certain level, but the blower fan 6
If the amount of air blown from the positive temperature characteristic resistance element 8 is abnormally reduced, the positive temperature characteristic resistance element 8 will accumulate high temperature heat, and if such a high temperature condition is applied to the resin electrical insulating member 10 for a long time, it will deform or burn out. .

As mentioned above, the hot air forced circulation type kotatsu of the present invention is equipped with a positive temperature characteristic resistance element that generates self-heating at the outlet of a ventilation duct equipped with a blower fan, through a resin electrical insulating member, and a resin electrical insulating member. Since the insulating member is equipped with a thermally responsive element that cuts off the current flow to the positive temperature characteristic resistance element, it is possible to ensure the attachment of the positive temperature characteristic resistance element to the ventilation duct, and also to deform the resin electric insulating member. The kotatsu is of good quality and safe, as it can maintain a secure mounting condition without causing any damage, and also prevents dangers such as burnout.

[Brief explanation of the drawing]

Fig. 1 is an external side view of the proposed kotatsu, and Fig. 2 is an enlarged sectional view of the main parts. 5... Ventilation duct, 8... Positive temperature characteristic resistance element, 10... Resin electrical insulation member, 11
...Thermal response element.

Claims (1)

[Scope of utility model registration request] A positive temperature characteristic resistance element that generates self-heating is attached to the outlet of a ventilation duct equipped with a ventilation fan via a resin electrical insulating member, and the resin electrical insulating member is energized to the positive temperature characteristic resistance element. A kotatsu with forced circulation of hot air equipped with a heat-responsive element that shuts off the air.