JPH024370Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a foot warm air heater that is embedded in a skirting board below a sink or the like to heat the footwell.

(Prior Art) The applicant previously disclosed a foot warm air heater in Utility Model Application No. 73504/1983. This heater is stored in the space where baseboards at the bottom of sinks, washstands, etc. are installed.The fan and heater are built into a flat casing that can be embedded in the space, and the fan and heater are installed in the front of the casing. After the air sucked in through the inlet provided in the opening of the casing is heated by the heater, it is sent out as warm air from the outlet similarly provided in the opening of the front surface of the casing.

However, the purpose of this heater is simply to efficiently send hot air from the outlet to warm the user's feet, and the heater used in conjunction with this is also unable to warm the air in a short time after being energized. Since the heating wire is simply coated with a metal oxide film, there is still room for improvement in the following points.

In other words, since this conventional foot heater warms the feet by blowing warm air, only the surface of the skin that comes into contact with the warm air is warmed, which not only makes it difficult to get a reliable feeling of heating, but also prevents the warm air from reaching the feet. By the way, you cannot get a direct heating effect.

Furthermore, since the warmth of the hot air depends on the amount of heat released by the heater, a heater with a large amount of heat must be used, which increases power consumption.

Furthermore, since the heater is mounted with most of its heat generating wires exposed, this, combined with the above-mentioned problem of the amount of heat, results in a lack of sufficient durability.

(Purpose) In view of these points, the present invention not only provides a reliable heating sensation, but can also be expected to have a heating effect even in far away places, and also achieves energy-saving effects and improves the durability of the heater. The object of the present invention is to provide a foot warm air heater that can warm the feet.

(Structure) In order to achieve the above-mentioned purpose, the present invention incorporates a fan and a heater into a casing that can be accommodated in a space where a baseboard such as a sink is installed, and the air is sucked in from an inlet provided on the front of the casing. of,
In the foot warm air heater, which heats the air with the above heater and then sends it out from the air outlet similarly provided on the front of the casing, a mesh-like ventilation plate is attached to the hot air outlet passage, and the surface of this ventilation plate is The heater is characterized in that a far-infrared radiation coating is applied to the surface of the heating wire constituting the heater.

(Example) Hereinafter, the present invention will be described in detail based on the illustrated example.

The drawing shows a hot air heater according to an embodiment of the present invention, and reference numeral 1 in the drawing indicates a flat box-shaped casing with an open front.
is formed to have a volume that can be embedded in the space where the baseboard B at the bottom of the sink A etc. shown in the figure is attached, and a retention chamber 2 is provided at the rear of the interior to temporarily retain the sucked air, A hot air generating section 3 is attached to the center of the front of the interior. Reference numeral 4 denotes a flange portion extending outwardly from both sides of the front opening 1a of the casing 1, and is used to fix the warm air heater to the baseboard B having the above-mentioned space.

The hot air generator 3 is fixed on a board 5 that is detachably attached to the bottom plate of the casing 1, and in the event of a failure, etc., the board 5 can be removed from the casing 1 to replace the entire unit. ing.

Reference numeral 6 denotes a fan constituting the hot air generating section 3, and its both ends are supported on bearing plates 7, 7 fixed upright on both rear sides of the base plate 5 so as to blow air toward the front opening 1a of the casing 1. A driving motor 8 is attached to one bearing plate 7. Further, a wind tunnel cover 9 is attached to the front part of the fan 6 to guide the air blown from the fan 6 to the front opening 1a of the casing 1.

Reference numeral 10 denotes a heater which is another component of the hot air generating section 3, and is disposed on the lower surface of the wind tunnel cover 9 covering the upper front part of the board 5 so as to block the air passage of the fan 6. The heater 10 has three heating wires 11 bent in a wave shape with a long amplitude arranged in parallel, and these peaks 11a are connected to two heat-resistant insulating plates 12, 12.
The heat-resistant insulating plate 12 is fixed to the lower surface of the wind tunnel cover 9. Further, the surfaces of all the heating wires 11 are coated with far-infrared radiation paint 13. This paint 13 has SiO ² , ZrSiO ² , and MnO ² as main components, for example.

A ventilation plate 14 made of a wire mesh is attached between the heater 10 and the open front surface of the casing 1, and the surface of this ventilation plate 14 is also coated with far-infrared paint 13 in the same manner as the heater 10 described above.

Both front sides of the interior of the casing 1 located on both sides of the hot air generating section 3 form an air intake passage 15 that communicates with the air retention chamber 2 described above.

Reference numeral 16 denotes a front cover that covers the open front surface of the casing 1. This front cover 16 has a large number of holes 17 opened on its surface, and the openings located on both sides serve as air intake ports 17a, and the openings located in the center serve as air intake ports 17a. The openings each constitute a hot air outlet 17b. The front cover 16 is removably fixed to the front surface of the casing 1 with screws.

Incidentally, reference numerals 18 and 19 in the figure are a temperature control thermostat and a heating prevention thermostat provided on both sides of the wind tunnel cover 9.

When the start switch (not shown) is turned on and the fan 6 rotates, the indoor air flows into the intake port 17.
a, and after temporarily staying in the retention chamber 2 via the suction passage 15, it is sent out toward the heater 10. Simultaneously with the ON operation of the switch, the heater 10 is also energized and the above air is warmed, and the ventilation plate 1
4 and is blown out from the air outlet 17b to the user's feet.

At this time, the energized heating wire 11 emits electromagnetic waves having a wide range of wavelengths. This electromagnetic wave is transmitted to the far infrared radiation paint 1 applied to the surface of the heating wire 11.
It reaches the crystalline body that selectively reflects infrared rays among the main components of No. 3, and repeats the reflection to generate far infrared rays. Ventilation plate 1 provided in front of heating wire 11
Since the far-infrared emitting paint 13 is also applied to the mesh-like surface of 4, far-infrared rays are emitted from this area, and together with the radiation from the heating wire 11, the far-infrared rays are emitted from the hot air outlet. This results in diffuse radiation.

Since these far-infrared rays have a long wavelength of about 25 μm to 1 mm, their thermal effect is transmitted to a place far away from the heating wire 11 and beyond the reach of the hot air due to their excellent directivity and reachability.

In addition, far-infrared rays have a high penetrating power, so when they hit the human body, they reach deep inside the body and warm the user's feet. Therefore, even if the amount of heat of the heating wire 11 is low, a reliable warming feeling can be provided.

In the embodiment described above, the ventilation plate 14 is formed to have the same width as the width of the board 5 to which the fan 6 and the heater 10 are attached, but the present invention is not limited to this, and it may be attached to the entire back surface of the front cover. The filter may also be used for this purpose, and in that case, the far-infrared emitting paint may be applied only to the portion of the filter that corresponds to the air outlet.

(Effects) As described above, according to the present invention, far-infrared radiation paint is applied to the surface of the ventilation plate attached to the hot air blowing passage and the surface of the heating wire of the heater, so that the far-infrared radiation is radiated to the user's feet, producing a thermal effect that reaches areas that hot air cannot reach.

In addition, according to the present invention, while the hot air warms the skin surface, the far infrared rays warm the deep part of the body, providing a reliable warming sensation and the amount of heat from the heating wire. Since it is possible to keep the amount of air low, it is possible to save on power consumption and at the same time, to obtain soft warm air.

Furthermore, according to the present invention, since the heating wire of the heater is coated with far-infrared paint, it is possible to improve the durability of the heating wire and also improve the insulation properties.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a foot warm air heater according to an embodiment of the present invention seen from the side, Fig. 2 is a partial sectional view of the same as seen from above, and Fig. 3 shows the heater used therein. FIG. 4 is an enlarged front view, FIG. 4 is a perspective view illustrating the front part thereof, and FIG. 5 is an overall perspective view of the sink to which it is attached. A... Sink, B... Baseboard, 1... Casing, 3... Warm air generator, 5... Board, 6... Fan, 8... Motor, 10... Heater, 11... Heat generating wire, 13...far infrared paint, 14...ventilation board,
16...Front cover, 17a...Intake port, 1
7b...Air outlet.

Claims (1)

[Scope of utility model registration request] A fan and a heater are built into a casing that can be accommodated in a space where a baseboard such as a sink is installed, and the air sucked in from the intake port provided at the front of the casing is warmed by the heater, and then heated to the front of the casing. In a foot warm air heater that blows out warm air from a similarly provided outlet, a mesh-like ventilation plate is attached to the hot air outlet passage, and the surface of this ventilation plate and the heating wire constituting the heater are connected to each other. A foot warm air heater characterized by having far-infrared radiation paint applied to the surface.