JPH081411Y2 - Hot air type electric kotatsu - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a warm air type electric kotatsu having a heating element built in a cylindrical support provided on the lower surface of a top plate.

2. Description of the Related Art A warm-air electric kotatsu, which is a conventional example and has a heating element built into a cylindrical column provided on the lower surface of the top plate, is located above the column and the longitudinal direction faces the lower surface of the top plate. A reflection plate is provided between the rod-shaped heating element provided and the top plate, and by the rotation of the fan provided between the reflection plate and the rod-shaped heating element, the pillar positioned on the side of the fan. The cold air sucked from the formed suction port is guided to the heating element to form warm air, and the warm air is discharged from the discharge port formed on the side wall of the support column located below the heating element.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described configuration, the cold air sucked from the suction port is not sufficiently heated because it does not contact the rod-shaped heating element or passes through the vicinity in a short time, That is, that is, the heat of the heating element is sufficiently removed and the heat is not discharged from the discharge port, and the heat of the heating element abnormally heats the support column, which gives a warmer a discomfort. In order to eliminate the discomfort, the pillar is enlarged to increase the internal space of the pillar to prevent abnormal heating of the pillar. As a result, the heating space on the lower surface of the top plate is narrowed, and the places where the legs of the warmer are located are limited, which is not convenient for the warmer.

An object of the present invention is to solve the above problems and to provide a warm-air type electric kotatsu, which is convenient for a warmer and can efficiently supply warm air.

Means for Solving the Problems The warm-air type electric kotatsu of the present invention has an upper support having a plurality of holes in an intermediate portion of a cylindrical column having a top plate fixed to a tip and a bottom plate fixed to a lower end, respectively. A frame body having a second internal space composed of a plate, a lower support plate, and a cylindrical central support body is arranged, a rod-shaped heating element and a fan are arranged in the frame body, and the fan is provided outside the frame body. The motor for driving the fan and the heat-sensitive body for temperature control are arranged on the inflow side of the air flow.

The warm air type electric kotatsu of the present invention collects heat because the cool air sucked from the inlet of the pillar by the fan and outside the pillar is a downward air flow along the longitudinal direction of the rod-shaped heating element. The heating time will be given to obtain an air flow of warm air that has reached a temperature suitable for. Further, since the heating element is provided in the second internal space of the central support,
The air flow in the second internal space can be more effectively heated by the heat of the heating element due to the effect of heat reflection of the central support and diffusion prevention of the air flow by the central support. it can. Further, due to the heat shielding effect of the central support, it is possible to prevent abnormal heating of the support column by the heating element. Further, since the fan driving motor and the temperature control heat sensitive body are arranged at positions where the radiant heat of the heat generating body does not directly hit in the air flow before being heated by the heat generating body, Excessive heating due to radiant heat reduces the deterioration of the motor, and the temperature control heat sensitive body is present in the air stream before being heated by the heating element, that is, the air stream showing the average temperature in the kotatsu. Since it is arranged, stable temperature control can be expected.

EXAMPLE A warm air type electric kotatsu according to an example of the present invention will be described below with reference to FIGS.

FIG. 1 is a sectional side view of a hot-air type electric kotatsu according to an embodiment of the present invention, FIG. 2 is a sectional plan view taken along the line AA of FIG. 1, and FIG. FIG. 3 is a cross-sectional side view showing a state of air flow.

In the figure, reference numeral 1 denotes a plate-shaped top plate, and at the center of the lower surface of the top plate 1, there is provided a columnar support 3 having a quadrangular shape in which a cylindrical first internal space 2 is formed. It is provided by a screw 4 penetrating through. A plate-shaped bottom plate 5 is provided at the lower end of the column 3, and the bottom plate 5 is screwed to the lower end of the column by a screw 4 penetrating the bottom plate 5. A heat insulating material 6 such as jutan is provided on the surface of the bottom plate 5 located outside the pillar 3. An upper portion having a side wall 9 extending upward from each outer edge of the quadrangular substrate portion 8 so as to be substantially in contact with an inner surface of each side wall 7 of the support column 3 above the first inner space 2. The support plate 10 is provided on the top plate 1 so that the substrate portion 8 faces the first support plate 10, so that the first space 11 surrounded by the upper support plate 10 and the top plate 1 is formed. A plurality of first holes 12 are formed in the substrate portion 8 and each side wall 9 of the upper support plate 10. Similarly, in the lower part of the first internal space 2, side walls 14 extending downward from the respective outer edges of the rectangular substrate part 13 are formed so as to be substantially in contact with the inner surfaces of the respective side walls 7 of the pillar 3. The lower support plate 15 having the above is provided on the top plate 1 so that the substrate portion 13 faces each other, so that the second space 16 surrounded by the lower support body 15 and the top plate 1 is formed.
A plurality of second support members are provided on the base plate portion 13 and each side wall 14 of the lower support plate 15.
Hole portions 17 are formed respectively. The upper support plate 10
Between the lower support plate 15 and the lower support plate 15, the respective side cylindrical surfaces 19 each having a plurality of third hole portions 18 face the side walls 7 of the support column 3 with a predetermined distance, respectively, and inside the A quadrilateral cylindrical central support 21 is provided which forms two internal spaces 20. A central support 21 is provided in the center of the second internal space 20.
A pair of rod-shaped heating elements 22 which are opposed to each of the pair of side cylindrical surfaces 19 facing each other and whose longitudinal directions are respectively positioned in the vertical direction.
Is held and provided by a holder 23 fixed to the side cylindrical surface 19. A fan 24 for generating an air flow downward in the central portion between the heating elements 22 and above the second internal space 20.
Is provided. The rotation driving of the fan 24 is performed by placing the fan 24 on the upper surface of the substrate portion 8 of the upper support plate 10 so that
It is performed by the motor 31 which is prevented from being affected by the heat of. A first connector 25 for supplying electric power to the heating element 22 and the motor 31 is provided on the upper surface of the substrate portion 8 of the upper support plate 10. A second connector 26 provided at one end of a cord connected to a commercial power source is detachably connected to the first connector 25, and the tip of the second connector 26 is connected during the connection. The portion penetrates the side wall 9 of the upper support plate 10 and the side wall 7 of the support column 3 so as to be located in the first space 11 outside the first connector 25.
Further, the second connector 26 has a built-in heat sensitive body 30 that detects the temperature of the first space 11 and controls the electric power supplied to the heating element 22. In each of the side walls 7 of the pillar 3, the air on the outer side of the pillar 3 is sucked into the first space 11 in the upper portion of the pillar 3, that is, in the portion located laterally of the first space 11. A plurality of fourth hole portions 27 are provided as suction ports to allow the central support body 21 to be located in the central portion of the support column 3, that is, a portion of the central support body 21 that faces the second internal space 20. A plurality of fifth holes 28 are provided as radiant holes through which the radiant heat of the heating element 22 passing through the third hole 18 can be radiated to the outer side of the column 3.
A plurality of sixth hole portions serving as discharge holes for discharging the air in the second space 16 to the outside of the support column 3 are provided in the lower portion of the support column, that is, in a portion that is located laterally opposite to the second space 16. 29 are provided.

Regarding the warm air type electric kotatsu configured as described above,
The operation and effect will be described below with reference to FIG.

In the figure, when the fan 24 is rotated when the heating element 22 starts to generate heat, an air flow a is generated. The flow of the air flow a will be described. Above the fan 24, the cool air in the first space 11 is guided into the second internal space 20, and the cool air outside the support column 3 is directed to the support column 3. The cold air is passed through the fourth hole and the first hole 12 formed in the side wall 9 of the upper support plate 10 in sequence and sucked into the first space 11. Further, below the fan 24, the cold air guided into the second internal space 20 is blown downward by the fan 24, and is thus guided downward along the longitudinal direction of the heating element 22. It becomes a flow of air. Therefore, the cold air is heated by the heating element 22 to be heated to warm air suitable for collecting heat. At the same time, the flow of cold air and warm air in the second internal space 20 is reflected by the upper support 10, the central support 21, and the lower support plate 15, and the central support 21 prevents diffusion of the air flow. By the effect of, the heating element 22 heats the air so that it becomes warm air more suitable for collecting heat. Then, the warm air passes through the second hole portion 17 formed in the base plate portion 13 of the lower support plate 15 and is guided to the second space, and further, the warm air guided to the second space is downward. Second hole formed in the side wall 14 of the support plate 15
The heating space 32 is warmed by being sequentially passed through 17 and the sixth hole 29 of the support column 3 and discharged below the heating space 32 formed on the outer side of the support column 3. Further, the radiant heat of the heating element 22 radiated toward the outside of the heating element 22 is partially shielded by the central support 21 to prevent abnormal heating of the support column 3, and the other part is central support. It passes through the third hole portion 18 of 21 and the fifth hole portion 28 of the column 3 in sequence and is radiated to the warming space 32 to warm the warming space 32, so that comfortable warming can be performed.

As described above, in the warm air type electric kotatsu of the present invention, a pair of rod-shaped heating elements are provided in the second inner space of the central support body provided in the first inner space of the column. A fan is provided between each heating element. As a result, the air flow of the cool air outside the strut sucked from the suction port of the strut flows downward along the longitudinal direction of the rod-shaped heating element, so that heating time is given, and warm air suitable for collecting heat is provided. Can be heated to a stream of air. Further, since the heating element is provided in the second internal space of the central support, the second support is provided with the effect of heat reflection of the central support and prevention of diffusion of the air flow by the central support. The air flow in the internal space can be effectively heated by the heating element so as to become warm air more suitable for collecting heat. Further, due to the heat shielding effect of the central support, it is possible to prevent abnormal heating of the support column by the heating element.

Therefore, hot air is efficiently supplied, and since it is not necessary to enlarge the support pillar to prevent abnormal heating of the support pillar, there is no inconvenience such as the location of the warmer's leg being limited. . Further, since the fan driving motor and the temperature control heat sensitive body are arranged at positions where the radiant heat of the heat generating body does not directly hit in the air flow before being heated by the heat generating body, The deterioration of the motor due to excessive heating due to radiant heat is also reduced,
Further, since the temperature control heat-sensitive body is arranged in the air flow before being heated by the heating element, that is, in the air flow showing the average temperature in the kotatsu, stable temperature control can be expected.

[Brief description of drawings]

FIG. 1 is a sectional side view of a hot-air type electric kotatsu according to an embodiment of the present invention, FIG. 2 is a sectional plan view taken along the line AA of FIG. 1, and FIG. FIG. 3 is a cross-sectional side view showing a state of air flow. 1 ... Top plate, 2 ... First internal space, 3 ... Post, 5 ...
... bottom plate, 7 ... side wall, 10 ... upper support plate, 11 ... first space, 12 ... first hole, 15 ... lower support plate, 16 ... second space, 17 ... 2nd hole, 18 ... 3rd hole, 20 ...
… Second inner space, 21 …… Center support, 22 …… Heating element,
24 …… Fan, 27 …… Fourth hole, 28 …… Fifth hole,
29 …… Sixth hole.

Continuation of front page (72) Toshinori Nishiu, 2-10, Sato-cho, Takamatsu-shi, Kagawa 2-10, Matsushita Electronics Co., Ltd. (56) References: 63-125742 (JP, U) 58-188544 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A cylindrical support having a top plate fixed to the tip and a bottom plate fixed to the lower end, and a cylindrical support having a first internal space therein, and a top plate facing the top plate at a predetermined interval. An upper support plate disposed in the first internal space so as to form a first space therebetween, a plurality of first holes formed in the upper support plate, and a predetermined number in the bottom plate. A lower support plate disposed in the second internal space so as to form a second space between the lower support plate and a plurality of second support plates formed on the lower support plate. A hole, a cylindrical central support arranged between the upper support plate and the lower support plate so as to form a second internal space therein, and a plurality of first central support plates formed in the central support plate. And a pair of holes provided in the second internal space so that the longitudinal direction thereof faces the side cylindrical surface of the central support. A rod-shaped heat generating element, a fan that is provided at a substantially central portion between the heat generating elements and generates an air flow downward, and a fan that is rotationally driven to be provided in the first space. A motor, a suction port formed on a side wall of the pillar that forms the first space, a radiation hole formed at a side wall of the pillar that faces a side surface of the central support, and a second hole. The fan includes a discharge port formed on a side wall of the pillar that forms a space, and a heat sensitive body that is disposed in the first space and controls power supplied to the heat generating body according to a detected temperature. The air sucked into the first space from the suction port due to the rotation is sequentially passed through the first hole portion and the second hole portion, and is passed through the second internal space and the second space to the discharge port. Warm-air type electric kotatsu, which is characterized by more discharge.