JPH037861B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a hot air kotatsu that efficiently releases hot air into a tower kotatsu.

(b) Conventional technology As shown in Japanese Utility Model Publication No. 46-31430, the conventional heat generating unit of this type of hot air kotatsu uses a centrifugal impeller to pass air through the protective cover, which is taken in from below the protective cover. At the very least, it is directed downward along the inner periphery of the turret, but since a wind cylinder is provided between the electric motor and the electric heating element, the inhaled air changes its direction approximately at a speed angle within the heating unit and flows around the turret. It will be released in the direction. For this reason, the air flow was not smooth and the warm air did not reach the inside of the kotatsu body sufficiently, resulting in poor efficiency. Furthermore, as mentioned above, due to the poor air flow within the heat generating unit, the temperature of each part of the unit rose and there was a risk of burns if the protective cover was touched.

By the way, if you increase the spatial distance between the protective cover and the electric heating element, and between the electric heating element and the reflective plate, the temperature rise of the protective cover will be suppressed and the temperature of each component will be lowered, but the overall dimensions of the unit will increase and the inside of the kotatsu will become smaller. The drawback was that the effective internal volume was narrow.

(c) Problems to be Solved by the Invention The present invention smoothes the flow of air within the heat generating part to make the temperature of each part of the kotatsu body uniform, and also suppresses the temperature rise inside the heat generating part to increase the temperature of the heat generating part. Reduce the size.

(d) Means for Solving the Problems The present invention provides a wind guide plate having an inverted truncated conical portion substantially in the center thereof that bulges downward and has an inclined surface on its outer periphery; An electric motor installed inside the unit,
A heat generating portion including a fan located at a lower part of the truncated conical part and driven by the electric motor, an infrared lamp provided outside the fan, and a net-like body covering the lower surface of the fan and the infrared lamp, the fan being driven. This configuration is such that air is taken in from the center of the net-like body, is sent along the slope, and is turned into warm air by an infrared lamp and discharged to the outside.

(E) Effect In the present invention, the air sucked in from the center side of the mesh body by the drive of the fan is guided along the slope of the inverted truncated conical part, flows below the wind guide plate, and is turned into warm air by the infrared lamp. converted and released to the outside of the reticular body.

(f) Embodiment 1 is a main body of a yagura kotatsu, which is rectangular in plan and consists of long sides 2, 2 and short sides 3, 3, and legs 4, 4, 4, 4 are attached to the corners of these, respectively. It forms a drooping shape. The ceiling portion 5 of the main body of the tower kotatsu is constructed by combining a plurality of crosspieces 6, 6, . . . that intersect vertically and horizontally.

Reference numeral 7 denotes a heat generating part which is suspended on the central ceiling of the tower fan main body 1 and heats the inside of the tower kotatsu main body.The heat generating part is equipped with an electric blower fan 8 and two rod-shaped infrared lamps 9, 9. The heat rays irradiated from the rod-shaped infrared lamps 9 and the electric blower fan 8 are arranged in parallel to each other and are arranged outside the outer periphery of the electric blower fan 8 to be internalized.
The inside of the tower kotatsu main body 1 is heated by circulating the air. Therefore, the electric blower fan 8 and the rod-shaped infrared lamps 9 are disposed substantially horizontally in the lateral direction within the hot air generating unit.

The heat generating section 7 overlaps the wind guide plate 11 at a distance S below the unit top plate 10 on the uppermost surface. The wind guide plate 11 has an inverted truncated cone shape with a substantially central portion thereof bulging downward, and an inclined surface 12 is formed on its outer periphery, and a motor storage space 13 is provided between the wind guide plate 11 and the unit top plate 10. In addition, electric motor storage space 13
The electric motor M is swingably housed therein, and the electric motor M is elastically supported by the wind guide plate 11 in the vertical direction via a spring 14. The drive shaft 15 of the electric motor M is connected to the wind guide plate 1.
A fan 16, which is disposed facing the inclined surface 12 at the tip of the fan 1, is pivotally supported and driven to rotate, so that the air sucked into the heat generating section 7 is drawn into the heat generating section 7, using the inclined surface 12 as a guide, as shown in the direction of the arrow. The air is smoothly distributed radially along the wind guide plate 11.

Outer peripheral frames 17, 17, 17, 1 are provided on the four sides of the unit top plate 10 and the wind guide plate 11, respectively.
7 are formed in a hanging manner, and through holes 18, 18, consisting of a plurality of horizontally long slits, are bored in the outer peripheral frame, and a net-like body 19, which is made by flocking a lath board, is formed in the lower opening formed by the outer peripheral frame. It is covered.

The rod-shaped infrared lamps 9, 9 are placed between the electric blower fan 8 and the outer peripheral frame 17 consisting of four sides, and are suspended along a pair of opposing outer peripheral frames. The heat rays directly irradiate and heat the feet of the person positioned below the net-like body 19 through the net-like body 19.
The mesh body 19 is irradiated and heated, and the wind guide plate 11 is further heated. Heat is sequentially radiated by the air flowing along the direction. The wind guide plate 11 also radiates heat by air, and the heat is sequentially released from the through holes 18, 18, . Of course, since the hot air that has exchanged heat with the lamps is released from the outer frames 17, 17 on the two sides along the rod-shaped infrared lamps 9, 9, the temperature is higher than the hot air released from the outer frames 17, 17 on the remaining two sides. becomes.

Therefore, the surface of the net-like body 19 is always maintained at a relatively low temperature without being heated more than necessary, and the hot air released from the heat generating part 7 is separated from the opposite side where the high-temperature hot air is released and the opposite side where the low-temperature hot air is released. It forms the In addition, near both ends of the lamp, it is difficult to receive the hot air from the lamp itself, and the temperature in that area becomes low, but it is affected by the heat from the other lamp, so heating is almost uniform on the opposite sides where low-temperature hot air is released. is obtained.

(g) Effects of the invention Since the present invention is configured as described above,
Since the air taken into the heat generating part flows smoothly along the outer circumferential surface of the inverted truncated conical part, the hot air is efficiently discharged around the outside of the heat generating part, making the temperature of each part inside the kotatsu body uniform, and increasing the temperature inside the heat generating part. temperature rise can be suppressed. As a result, the area around the inverted truncated conical part is forcibly cooled, which prevents thermal effects on the motor, and also reduces the temperature of each part, making it possible to reduce the overall height of the heat generating part. .

[Brief explanation of the drawing]

FIG. 1 is an external side view of the hot air kotatsu of the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is a longitudinal cross-sectional view of a hot air generating unit used in the hot air kotatsu of the present invention. 1... Yagura kotatsu, 7... Heat generating part, 8... Electric blower fan, 9,9... Bar-shaped infrared lamp, 1
DESCRIPTION OF SYMBOLS 1... Wind guide plate, 12... Inclined surface, 13... Electric motor storage space, 19... Net-like body.

Claims (1)

[Claims] 1. A unit top plate, a wind guide plate provided at a distance below the unit top plate, an inverted truncated conical portion bulging downward at approximately the center of the wind guide plate, and an electric motor disposed within an inverted truncated conical section; a fan located at the bottom of the inverted truncated conical section and driven by the electric motor; an infrared lamp provided outside the fan; and a lower surface of the fan and the infrared lamp. A hot air kotatsu equipped with a heat generating part consisting of a net-like body that covers the kotatsu.