JP2838806B2 - Electric kotatsu - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in an electric kotatsu.

[Prior art] Kotatsu is one of the old Japanese heating appliances, which has been used by Japanese people, and even in electric kotatsu where the heat source is changed from charcoal or lantern to electricity.
In Japan, the affinity is very high.
In particular, the furniture-style electric kotatsu, which adopted luxury furniture design in the specifications of YAGURA recently, harmonizes well with tatami rooms between Japan and can be used as furniture even in warm seasons when heating is not required, so it has a warm power Coupled with low consumption, it is an extremely Japanese-style heating appliance that is widely used in various parts of Japan today.

FIG. 6 shows the conventional electric kotatsu.
Is a side view thereof, and (b) is a rear plan view showing the arrangement of the heater and the fan. In the figure, 1 is a ratchet, 2 is a heater, 3 is a fan, 4 is a motor, 5 is a cable, 6 is a controller, 7 8 is an upper plate, 9 is a folding surface.

As shown in the figure, the electric kotatsu is a yagura 1 and a yagura 1
Heater 3, a fan 3, and a fan 3
, A cable 5 for supplying power to the motor 4, and a controller 6 interposed in the cable 5.

To use the electric kotatsu, the tower 1 placed on the folding surface 9 is covered with a futon 7, an upper plate 8 is placed thereon, and the cable 5 is connected to a power source. Next, when the controller 6 is operated to operate the heater 2 and the motor 4 of the fan, the fan 3 stirs the air in the tower 1, and the heater 2
Then, the air heated by the air is sent to the kotatsu user, and the body of the kotatsu user is warmed mainly by convection heat transfer.

[Problem to be Solved by the Invention] By the way, in the above-mentioned conventional electric kotatsu, the futon 7
Due to intrusion of draft due to improper application, insufficient air circulation in the yagura 1 due to functional restrictions of the fan 3, or inadequate use of radiant heat due to lack of the heat reflecting plate of the heater 2. Due to variations in the location of the air temperature in the room, the average hot air cannot be sent to the kotatsu users, and some users may feel cold, which may lead to unexpected reputation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional apparatus, and has as its object to provide an electric kotatsu that gives uniformity and sufficient warmth to all kotatsu users and obtains the satisfaction.

Means for Solving the Problems In order to achieve the above object, the electric kotatsu according to the present invention is arranged alternately so that one end is located at the center of the kotatsu and the other end is located in the radial direction. And a plurality of linear heaters using a resistor, a plurality of linear lamp heaters, and control means for controlling the temperature of the lamp heaters to intermittently increase in a short time. is there.

In addition, a plurality of linear heaters and a plurality of linear lamp heaters, each of which is alternately arranged in a rectangular kotatsu and a rectangle so as to form a rectangular shape using a resistor, and the temperature of the lamp heater is intermittently set. And control means for controlling so as to increase in a short time.

[Operation] A plurality of linear heaters and a plurality of linear lamps are arranged alternately so that one end is located at the center of the kotatsu-yagura and the other end is located in the radial direction. A heater is provided, and the control means controls the temperature of the ramp heater to increase intermittently in a short period of time, so that the temperature distribution in the kotatsu-yagura is made uniform and the warmth is increased.

Further, a plurality of linear heaters and a plurality of linear lamp heaters are arranged alternately in a rectangular kotatsu and a rectangular shape using a resistor, and the control means controls the temperature of the lamp heater. Is controlled so as to increase intermittently for a short time, so that the temperature distribution in the kotatsu-yagura is made uniform and the warmth is increased.

Embodiments of the Invention Proposed examples prior to the present invention will be described with reference to FIGS. FIG. 1 is an electric kotatsu (a) a side view, (b) a rear plan view, in which 1 is a kotatsu yagura, 5 is a cable,
9 is a folding surface, 10 is a heater, 10a is a heater using a resistor, 10b is a lamp heater, 11 is a reflector, and 12 is a heater temperature control device.

As shown in the figure, two heaters 10a and lamp-type heaters 10b each formed by sealing a nichrome wire in quartz glass are arranged on the back surface of the kotatsu-yagura 1, and a reflector 11 is provided for each heater. The control device 12 for controlling the heater temperature by adjusting the output is mounted.

FIG. 2 is a diagram showing the temperature rise characteristics of the heater, 13 shows the temperature rise characteristics of the lamp type heater 10b, and 14 shows that of the heater 10a using a resistor. Although the lamp type heater 10b has a lower thermal efficiency than the heater 10a using a resistor, the time constant is small and the heat efficiency is good, so if the output is intermittently increased for a short time using the control device 12, The heater temperature also rises in a pulsed manner as indicated by 13a. By introducing the fluctuation effect to the heater temperature of the kotatsu in this manner, the kotatsu user is stimulated by the intermittent temperature rise, so that the perceived temperature rises and the warmth increases.

In this proposed example, three linear heaters are used for the kotatsu heat source, but the heat source is not limited to this specification and may be other specifications. FIG. 3 shows a linear lamp heater 15a and a resistor-based circle heater 15b.
(A) is a side partial cross-sectional view of an electric kotatsu,
(B) is a front view of the heater. As in the above embodiment, the lamp heater 15a is controlled so as to exhibit a fluctuation effect. Since the circle heater 15b is used, the uniformity of heating is further improved. This is more effective when the shape of the kotatsu and rag 1 is circular.

Next, an embodiment of the present invention based on the above proposed example will be described with reference to FIGS.

FIG. 4 is a plan view of the back of the electric kotatsu. As shown in the figure, four heaters 17 each having a reflecting plate 18 are:
It is arranged radially on the back surface of the kotatsu-yagura 1.

The four heaters 17 may be all heaters using resistors, or two lamp heaters and two heaters using resistors may be alternately arranged, and the fluctuation effect may be used by the lamp heater.

These heaters 17 are controlled by control means (not shown), and if the output of the lamp type heater is increased intermittently for a short time as shown in FIG.
The pulse is raised as shown in 13a.

With such a configuration, the heat source is spread and uniformly heated,
Further, the user is stimulated by the intermittent temperature rise, so that the perceived temperature rises and the warmth increases. In particular, this effect can be obtained even when the kotatsu and gang 1 are rectangular.

FIG. 5 is a rear plan view of an electric kotatsu showing still another embodiment. As shown in the figure, four heaters 19 each having a reflection plate 20 are arranged in a rectangular shape on the back surface of the kotatsu-ya 1. For the specifications of the four heaters 19,
This is the same as the example of the electric kotatsu shown in FIG. Also, as in the above embodiment, the heater arrangement is effective in the case where the kotatsu-ya 1 is rectangular.

In the electric kotatsu according to the present invention, as described above, the conduction of heat from the heater to the user of the kotatsu depends solely on the radiation heat transfer. Therefore, the reflection surface of the heater reflection plate needs to be formed by chrome plating or the like so as to increase the reflectance as much as possible.

Further, the interval of the short-time increase of the output of the heater for the fluctuation effect, the amount of the increased power, and the like should be appropriately determined by experiments and the like.

Although the above embodiment is an example of a furniture-style kotatsu, the present invention is not limited to a furniture-style kotatsu but can be used for a normal electric kotatsu.

[Effects of the Invention] The electric kotatsu according to the present invention has the following effects.

(1) A plurality of linear heaters and a plurality of linear lamps are arranged alternately so that one end is located at the center of the kotatsu yagura and the other end is located radially, and a resistor is used. Since the heater and the control means for controlling the temperature of the lamp heater to increase intermittently for a short period of time are provided, the heat source is spread and uniformly heated, and the user is stimulated by the intermittent temperature rise. The perceived temperature rises and the warmth increases.

(2) A plurality of linear heaters and a plurality of linear lamp heaters, each of which is arranged alternately in a rectangular kotatsu or a tower so as to be rectangular and uses a resistor, and the temperature of the lamp heater is intermittent. Since the control means is provided so as to increase the temperature for a short period of time, the heat source is spread and uniformly heated, and the user is stimulated by the intermittent temperature rise, so that the perceived temperature rises and the warmth increases.

[Brief description of the drawings]

FIG. 1 is a proposal example of an electric kotatsu (a) is a side view,
(B) is a plan view of the back surface, FIG. 2 is a diagram showing the temperature rise characteristics of the heater, FIG. 3 is an electric kotatsu showing another proposed example, (a) is a partial cross-sectional side view, and (b) is a back surface. FIG. 4 is a plan view of the back side of the electric kotatsu showing one embodiment of the present invention, FIG. 5 is a plan view of the back side of the electric kotatsu showing another embodiment, and FIG. () Is a side view, and (b) is a rear plan view. In the figure, 1 is a kotatsu tower, 10 is a heater, 10a is a heater using a resistor, 10b is a lamp heater, 11 is a reflector, 1
2 is a heater temperature control device, 13 is a curve showing a temperature rise characteristic of a lamp type heater, 13a is a projection showing an intermittent temperature rise, 14 is a curve showing a temperature rise characteristic of a heater using a resistor, 15 is a heater, 15a is a linear heater, 15b is a circle heater, 16a and b are reflectors, 17 and 19 are heaters, and 18 and 20 are reflectors. The same reference numerals in the drawings indicate the same or corresponding parts.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-230931 (JP, A) JP-A-63-31657 (JP, A) Japanese Utility Model Application No. 57-28249 (JP, U) Japanese Utility Model Application No. Sho 61- 36205 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F24C 7/04-7/06 F24H 3/04 304-305

Claims (2)

(57) [Claims] 1. One end is located at the center of the kotatsu-yagura, and the other end is arranged alternately so as to be located in the radial direction.
A plurality of linear heaters and a plurality of linear lamp heaters using resistors; and control means for intermittently increasing the temperature of the lamp heaters for a short time. Electric kotatsu. 2. A plurality of linear heaters and a plurality of linear lamp-type heaters, each of which is alternately arranged in a rectangular kotatsu-yagura so as to be rectangular and uses a resistor, and a temperature of the lamp-type heater. Control means for controlling so as to intermittently increase the value for a short period of time.