JPH037862B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a hot air kotatsu that emits warm air into the kotatsu body.

(b) Conventional technology This type of hot air kotatsu is, for example,
As disclosed in the publication, it is equipped with an electric motor, a blade wheel rotationally driven by the electric motor, and an electric heating body,
The air taken in by the impeller is converted into warm air by the electric heating element and then discharged to the outside. However, since the electric motor is disposed inside the electric heating element, it receives radiant heat and becomes high in temperature, resulting in performance deterioration. For this reason, a wind cylinder is installed between the electric heating element and the electric motor to shield the radiant heat, but the installation of the wind cylinder increases the height of the heat generating part and increases the air flow path taken in by the electric motor. Although it was possible to cool the electric motor, the air flow was poor and the temperature of various parts rose, which was dangerous.

Incidentally, one way to lower the temperature of each part is to increase the spatial distance between the members (electric heating element, reflector, protective cover), but in this case, as mentioned above, the height of the heat generating part increases. It became.

(C) Problems to be Solved by the Invention The present invention provides a method in which the electric motor is disposed within the space provided between the unit top plate and the wind guide plate, and within an inverted truncated conical portion, thereby smoothing the flow of the intake air. In this way, the height of the heat generating part is reduced and the influence of heat on the electric motor is prevented.

(d) Means for Solving the Problems The present invention provides a unit top plate, a wind guide plate provided at a space below the unit top plate, and a wind guide plate provided downwardly at approximately the center of the wind guide plate. A bulging inverted truncated conical part, an electric motor disposed within the interval and within the inverted truncated conical part, a fan located at a lower part of the truncated conical part and driven by the electric motor, and an outside of the fan. The apparatus is configured to include an infrared lamp provided therein, and a net-like body covering the lower surface of the fan and the infrared lamp.

(e) Effect The air taken in by the fan flows directly along the wall of the truncated conical part, cools the inverted truncated conical part, suppresses the temperature rise within the space between the unit top plate and the wind guide plate, and flows directly into the inverted truncated conical part. This prevents thermal effects due to radiant heat from the infrared lamp.

(F) Embodiment The present invention has been made in view of the above points, and one embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes the main body of the Yagura Kotatsu, which is rectangular in plan and consists of long sides 2, 2 and short sides 3, 3, with legs 4, 4, 4, 4 hanging down from the corners of these, respectively. . 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 Yagura Kotatsu main body 1 and heats the inside of the Yagura Kotatsu main body, and an electric blower fan 8 is installed inside the heat generating part, and two rod-shaped infrared lamps 9, 9 are installed inside the heat generating part. 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, 9 are disposed substantially horizontally in the lateral direction within the heat generating portion 7.

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 a substantially central portion thereof bulged downward to form an inclined surface 12 on the outer periphery of an inverted truncated conical portion 110, 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 1
The electric motor M is housed in the wind guide plate 11 so as to be able to swing freely.
It is elastically supported in the vertical direction via. The drive shaft 15 of the electric motor M is connected to the wind guide plate 1.
By passing through the fan 16 and disposing it facing the inclined surface 12 at the tip thereof, the fan 16 is pivotally supported and rotated, so that the wind blows across the inclined surface 12 as shown in the direction of the arrow.
The air is smoothly distributed radially along the wind guide plate 11 using the wind guide plate 11 as a guide.

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 is also radiated with heat by the air, and the inverted truncated conical portion 11
0 is cooled and the heat is radiated through the through hole 1 of the outer peripheral frame 17.
8, 18, etc., and forcibly heats the inside of the tower kotatsu main body 1. 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 As described above, the present invention has the electric motor disposed within the space provided between the unit top plate and the wind guide plate and within the inverted truncated conical part. Since the air is released outward along the inverted truncated conical part and the wind guide plate, the temperature of each part such as the wind guide plate becomes low, reducing the spatial distance between the parts and reducing the height of the assembly of each part. can do.
Further, the electric motor can be shielded from the radiant heat from the infrared lamp by the inverted truncated conical portion of the wind guide plate without using any additional parts. Furthermore, the strength of the wind guide plate is increased by forming the inverted truncated conical portion, and this becomes effective in reducing the height dimension of the heat generating portion.

[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, 8... Electric blower fan,
9, 9... Rod-shaped infrared lamp, 11... Wind guide plate, 110... Inverted truncated conical part, 12... Inclined surface,
13...Electric motor storage space, 19...Reticular body.

Claims (1)

[Claims] 1. A wind guide plate having an inverted truncated conical part that bulges downward approximately at the center and has an inclined surface on the outer periphery, an electric motor disposed within the inverted truncated conical part, and a lower part of the truncated conical part. It consists of a fan located at and driven by the electric motor, an infrared lamp provided on the outside of the fan, and a net-like body that covers the lower surfaces of the fan and the infrared lamp. A warm air kotatsu characterized in that the air taken in is sent along the inclined surface, turned into warm air by an infrared lamp, and discharged to the outer circumferential side.