JPS61122454A - Radiation electric fan heater - Google Patents

Abstract

PURPOSE:To facilitate the setting of the ratio between hot air and radiation energies by means of the transmissivity of infrared rays through a heating pipe by drafting air to the heating pipe to generate hot air which is discharged from a grill, and also radiating the light and infrared rays from the heating pipe from the grill to the front space. CONSTITUTION:The radiation electric fan heater has a radiation heater 1 which has a heater element 2 that is supported in a heat-resistant pipe 4 and is thermally insulated, and said high-temperature radiation heater 1 is enclosed by a grill 7 in the front that comprises multiple thin plates and a reflector 6 in the back. A wind-tunnel unit 10 consists of side plates 8, 9. When air is drafted to the pipe 4 which is heated by the heater element 2, it is heated to become hot air and discharged through the grill 7 to the front space. The light and infrared rays from the heater element 2 pass through the pipe 4, and are radiated through the grill 7 to the front space directly or after being reflected by a reflector.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a radiant electric hot air fan that warms people or objects using radiant heat or convection heat.

2. Description of the Related Art Conventional radiant electric hot air fans are represented by two conventional examples shown in FIGS. 7 and 9.

In the first example, as shown in FIG. 7, a reflector unit formed by upper and lower side plates 8 and 9 for fixing the high-temperature radiant heater 1 and a concave reflector 6 is provided at the front, and a rear and upper and lower sides of the housing 12 and the reflector unit are provided. A wind tunnel is formed between the two parts. An air intake hole 12a is provided in the lower part of the housing 12, an air outlet 12b is provided in the upper front surface, and a blower unit 11 is provided inside the air intake hole 12a. Note that 16 is a guard.

With the above configuration, the radiant heat of the high-temperature radiant heater 1, which is directed away from the front, is reflected forward by the concave reflector 6, as shown in FIG. As for the wind function, the heat of the concave reflector plate 6 warms the wind and only blows it forward, so there is a problem that the amount of heat supplied is low and if the air volume is large, it becomes a cool breeze. Furthermore, when the air volume is kept low, the range is short and the heating effect is low.

Further, the example shown in FIG. 9 is a case 12 having an intake hole 12a on the rear surface.
A cylindrical high-temperature heater 1 is provided in the center on the front surface of the heater, a concave reflector 6 is provided around the heater with an air outlet 6a, and a blower unit 11 is provided between the reflector 6 and the intake hole 12a. Since the radiant heat is not reflected at the blow-off hole 6a, the reflection efficiency is low, and since the wind acts directly on the heater 1, its temperature is lowered and the radiant energy is lowered.

In addition, there was a problem in that the degree of redness decreased and the visual effect of giving a sense of warmth was impaired.

Problems to be Solved by the Invention In a radiant electric hot air fan configured with a single heater, it is possible to prevent a reduction in the radiant effect 9 due to enhanced hot air performance, to easily set the capacity of both hot air and radiation functions, and to raise the room temperature. The aim is to achieve comfortable heating performance through the use of radiation and appropriate heating stimulation and visual effects.

In view of the problems of the prior art, which are more than a means for solving the problems, the radiant electric hot air fan of the present invention includes a radiant heater in which a heater element is supported and thermally insulated within a heat-resistant tube, and its high-temperature radiant air heater. Surrounding the heater, there is a grid made up of many thin plates on the front, a reflector on the back,
It consists of a wind tunnel unit formed by a side plate and a blower unit, which blows air into a pipe heated by a heater element and discharges it as warm air from a grid body, and the light and infrared rays that pass through the pipe are either direct or reflected. The configuration was such that the light radiates forward from the grid.

Due to the above-described structure, of the light and infrared rays emitted from the heater element, those that pass through the tubular body are reflected directly or by a reflector and radiated forward as light and radiant energy to the front of the grid body. In addition, the infrared rays absorbed by the pipe raise the temperature of the pipe, and the air sent from the blower unit absorbs the heat to generate warm air, which is then discharged forward from the grid.

However, the infrared transmittance of the pipe body determines the energy ratio of hot air and radiation, and the respective capacities and ratios can be easily set.

In addition, since the heater element is not directly affected by the wind, the temperature is not lowered by the wind and the radiant energy and visual effects are not degraded as in the conventional case, so it provides sufficient hot air performance and the radiant effect. It is possible.

Embodiment FIG. 1 is a schematic longitudinal cross-sectional view of the present radiant electric hot air fan, in which a heater element 2 is fixed at the center by a support plate 3 so as not to come into contact with a heat-resistant tube body 4 made of a quartz glass tube, an alumina porcelain tube, etc. A high-temperature radiant heater 1 is fixed to the focal point of a concave reflector 6 by a mounting bracket 5. Further, on the front surface of the concave reflecting plate 6, a grid body 7 made of a thin plate of aluminum, stainless steel, etc., as shown in FIG. Wind tunnel 22)
10 is formed. Air intake hole 12 of ventilation unit 11 part
a is provided on the front surface of the housing 12.

Further, a blower unit 11 is attached in contact with the air inlet 9a of the wind tunnel unit 10, and the high temperature radiant heater 1 and the blower unit 11 are connected in parallel to a power cord 14 via a switch 13.

In this embodiment having the above-described configuration, the heater element 2 is suspended from the tube body 4 by the support plate 3, so that conductive heat is not lost, the temperature rises quickly, and light and infrared rays are emitted.

The radiation that passes through the inner tube body 4t is directed forward, and the radiation in other directions is reflected by the concave reflecting plate 6 and radiated forward of the grid body 7, warming the user or objects as radiant heat.

(Figure 5 A) In addition, radiation absorbed by the inner tube body 4 or by the surrounding air is transferred to the wind while the air blown from the air blower unit 11 passes through the wind tunnel 10. The warm air is absorbed and discharged to the front of the grid body 7 to directly warm the user or objects, or to warm the entire room. (Figure 6 A)
Moreover, FIG. 3 shows the high temperature radiant heater 1 and the wind tunnel unit 10.
is arranged perpendicularly to the floor surface, a blower unit 11 is provided below the wind tunnel unit 10, and the wind tunnel unit 10 and the housing 1
2, the wind is guided upward through the air conditioning plate 15, and is blown into the wind tunnel unit l-10 through the air inlet 8a provided on the upper plate 8, which radiates radiant heat (Fig. ) is the first
This is the same as the embodiment described above, but the action of the hot air is in the wind tunnel unit 1.
Since the air is blown in from the upper surface of the grid 7, if the pressure loss of the grid 7 is kept low, the pressure distribution inside the wind tunnel will be higher in the downward direction due to the dynamic pressure of the wind, and the wind speed distribution in front of the grid 7 will be a downward-rooted downward pattern. .

(Exit in Figure 6) Moreover, the wind temperature increases as it goes downward, resulting in a comfortable temperature distribution for the user, keeping his head cool and his feet warm.

Due to the structural action that goes beyond the effects of the invention, the radiant electric hot air fan of the present invention reduces the influence of the hot air function on the radiant function, even though the hot air function and the radiant function are performed by a single heater. It is easy to set the energy ratio for both functions simply by selecting the pipe body that covers the element, and by appropriately setting both warm air and radiation functions, it achieves warm air heating with uniform indoor temperature distribution and a soft feel. It exhibits comfortable heating characteristics that combine the advantages of radiant heating, such as quick heating, moderate heating stimulation, directivity, and visual effects.

In addition, by arranging the radiant heater and the wind tunnel unit perpendicular to the floor surface and blowing air from the top of the wind tunnel, the above-mentioned effect and the temperature distribution of cold feet and heat can further improve economic efficiency and comfort, making it a highly useful product. It is.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of the first embodiment of the present invention. FIG.
3 is a longitudinal sectional view of the second embodiment of the present invention. FIG. 4 is an external view of the lattice body. FIG. 5 is a radiation distribution diagram of the embodiment. FIG. 6 is a wind speed distribution diagram. 8 is a sectional view of a conventional example. FIG. 9 is a radiation distribution diagram. FIG. 9 is a sectional view of another conventional example. 1... Radiation heater, 2... Heater element 3... Support plate, 4... Tube body, 5
......Mounting bracket 6...Concave reflector, 7.
... Lattice, 8 ... Left side plate 9 ...
・Right case, 10...Wind tunnel unit 11...
...Blower unit, 12...Housing 13...
...Switch, 14...Power cord 15...
...Wind regulating board, 16... Guard. Name of agent: Patent attorney Toshio Nakao Haga 1st person
1 Cause Figure 3/? , l // Figure 4, Figure 5, Figure 6 (I J O))
Figure 7 f Figure 8 Figure 9

Claims (2)

[Claims] (1) A wind tunnel unit formed by a radiant heater in which a heater element is supported in a heat-resistant tube, a lattice body made up of many thin plates on the front surrounding the radiant heater, a reflector on the rear, and side plates. It is composed of an air blower unit, which blows air into the pipe body heated by the heater element, discharges it as warm air from the grid body, and radiates the light and infrared rays that pass through the pipe body directly or by reflection to the front of the grid body. Radiant electric hot air fan. (2) The radiant electric hot air fan according to claim 1, wherein the radiant heater and the wind tunnel unit are arranged perpendicularly to the floor surface, and an air outlet is provided on the top surface of the wind tunnel unit to blow air into the wind tunnel unit.