JP2933844B2 - Reflective radiation heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflected radiation heater.

[0002]

2. Description of the Related Art In homes, schools, offices and the like, small heaters for heating only the feet or mainly the feet are often used. For example, the heater is placed under an office desk and under a table to warm only the feet, or is arranged in a riser of a sink in a kitchen, a cooking room, or the like to warm only the feet. In sports, only the hands may be heated. These small heaters are roughly classified into a `` warm air type '' that uses a blower fan and a `` reflective radiation type '' that does not use a blower fan, each of which has advantages and disadvantages. Is not suitable. For example, in a living space for infants, a living space for sick people, a care house, and the like, the latter type is better than a heater that circulates dust. "Blow type"
Can be used for heating the entire room or for the partial heating described above, but is generally large and expensive. On the other hand, the "reflective radiation type" is convenient for warming a relatively small space, and small and inexpensive appliances are commercially available. However, there are few appliances that are small enough to be stored in the riser below the sink.

[0003] For example, FIG. 3 shows a hot-air heater installed in a riser below a kitchen sink, and the outer dimensions of the housing are approximately 100 mm × 200 mm × 300 mm. Not suitable for living spaces that hate dust.

[0004] Fig. 4 shows a small reflected radiation type heater used in a general home room, which is too large to be housed in a riser as described above. More specifically, the size of the opening is approximately 180 mm (height) × 250.
Two 400 W heaters of mm (width) are used. The heat ray emitted from the heater by radiation exits to the front of the housing as shown in (a) and (b) below. (B) Directly outside through the front net member. (B) After being reflected by the reflection plate, it goes outside through the net member. At this time, the heated air around the heater and the reflector is
It rises along the reflector and is emitted to the outside of the housing via the upper part of the mesh member. For this reason, the portion through which the heated air passes has a considerably high temperature (130 to 200 ° C.). Since the net member is exposed on the front surface of the housing, there is a possibility that a person may accidentally touch the net member. 130-200 ° C. is a temperature sufficient to cause burns and must be kept at least 80 ° C. or less. If it is attempted to fit this structure into a riser (usually about 120 mm in height) of a system kitchen, the size of the opening of the reflector is 60 mm (height) × 200 mm.
(W), the member on the front surface of the housing is almost entirely affected by the heated air, and the temperature rises to almost 130 to 200 ° C. over almost the entire region. Therefore, simply miniaturization lacks safety in use.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a reflected-radiation heater suitable for a living space that dislikes dust. An object of the present invention is to provide a safe and small heater that can be stored in the above-mentioned riser.

[0006]

The object of the invention is achieved by designing a heater as follows. (1) For one, in a housing provided with a net member on the front surface,
A reflection radiation heater in which a bar-shaped lamp or a heater and a gutter-shaped reflector are arranged, and a first ventilation hole is provided on a mesh member on a front surface or on an upper surface of a housing, and a lower surface of the housing or A second ventilation hole is provided below the other surface,
An intermediate plate connected to the rear surface and / or the side surface of the housing is disposed above the gutter-shaped reflection plate, and the flow of air due to natural convection rising in the housing mainly passes through the first ventilation hole. The net member is separated from the opening of the reflection plate by a certain degree. (2) Further, in a housing provided with a net member on the front surface,
A reflection radiation heater in which a rod-shaped lamp or a heater and a gutter-shaped reflection plate are arranged, and a first ventilation hole is provided on a mesh member on the front surface or on an upper surface of the housing, and a lower surface of the housing or A second ventilation hole is provided below the other surface,
An intermediate plate connected to the rear surface and / or the side surface of the housing is disposed above the gutter-shaped reflection plate, and the flow of air due to natural convection rising in the housing mainly passes through the first ventilation hole. At the same time, the surface temperature at an arbitrary position of the mesh member is 80 ° C.
The mesh member is separated from the opening of the reflection plate to such an extent as to become below.

[0007] Further, the design is further improved as follows. (3) A reflection radiant heater in which a rod-shaped lamp or heater and a gutter-like reflector are arranged in a housing provided with a net member on the front surface, the heater being on the front net member or the upper surface of the housing. A first ventilation hole is provided, and a second ventilation hole is provided below the lower surface or other surface of the housing, and above the gutter-like reflector, on the rear surface and / or the side surface of the housing. The connected intermediate plate is arranged, and the flow of air due to natural convection rising in the casing is mainly between the mesh member and the reflection plate so as to pass through the first ventilation hole. A strip-shaped member or a perforated plate member is arranged at a position outside the opening. (4) A reflection-radiation heater in which a rod-shaped lamp or heater and a gutter-like reflector are arranged in a housing provided with a net member on the front surface, the heater being on the front net member or the upper surface of the housing. A first ventilation hole is provided on the lower surface of the housing, and a second ventilation hole is provided on the lower surface of the housing after projecting the spacer from the lower surface. Back or /
And an intermediate plate connected to the side surface is arranged, so that the flow of air due to natural convection rising in the housing mainly passes through the first ventilation hole, between the mesh member and the reflection plate. A strip-shaped member or a perforated plate member is arranged at a position outside the opening of the reflection plate.

[0008]

The hot rising air current in the heater hits the intermediate plate provided above the gutter-shaped reflector, and the intermediate plate takes away the heat of the rising air flow. Further, the intermediate plate is connected to the rear surface and / or side surface of the housing, and the heat received by the intermediate plate is radiated on the rear surface and / or side surface of the housing. Therefore, the temperature of the airflow flowing out of the first ventilation hole and the temperature of the upper part of the housing can be reduced. Further, since the net member protrudes outside the housing, the temperature of the net member does not rise so much. In particular, the temperature of this protruding portion, which can be easily touched by the user, is ensured by 8
It can be 0 ° C or less. On the other hand, the heat ray from the lamp or the heater reaches the space in front of the mesh member without fail, and the local heating effect is obtained. In particular, by providing the strip-shaped member, the heat rays from the lamp can be effectively used, and the ascending airflow is accelerated to make it difficult for the airflow to approach the net member. Pointed.

[0009]

FIG. 1 is an explanatory view of an embodiment of a reflection radiation type heater according to the present invention. In the figure, reference numeral 1 denotes a rod-shaped halogen incandescent lamp having a power consumption of 200 W, which is drawn in a cross section perpendicular to the longitudinal direction of the lamp. Halogen incandescent lamps are particularly good as lamps for reflective radiant heaters because they radiate near-infrared radiation well. Numeral 2 is a gutter-like reflector arranged along the longitudinal direction of the electric bulb 1, and comprises a front part 2a and a rear part 2b. The front part 2a has a parabolic cross section, and the tube axis of the bulb 1 is slightly deviated from the focal point toward the top. Thereby, the reflection of the heat ray by the front portion 2a is in a direction to diverge to some extent. In this case, the curvature is changed so that the rear portion 2b does not contact the light bulb 1. In the embodiment shown, the front part 2a
The rear part 2b and the rear part 2b are formed as an integral body, but may be divided into two parts. In this case, a gap is provided between the front part 2a and the rear part 2b, so that the updraft flows easily.
When the heat rays are radiated and reflected, the space in front of the heater,
That is, there is an effect that the temperature gradient in the heated space is made gentle.

Reference numeral 3 denotes a mesh member provided at the center of the front surface of the housing 4 so as to protrude outside the housing 4, and the mesh is in a lattice shape. By doing so, the temperature of the mesh member 3 can be controlled to 80 ° C. or less. In addition, papers such as newspapers do not pass into the housing 4 due to excess, and the safety is high. Case 4
Inside, the net member 3 and the opening 5 of the reflector are spaced apart to some extent, for example, about 5 cm to 10 cm, and between the net member 3 and the opening 5 of the reflector, as shown in the drawing.
The reflection plate 6 is disposed as a strip-shaped member outside the opening 5 in the vertical direction. Depending on the orientation of the strip-shaped reflecting plate 6, the heat rays directed toward the inner wall of the housing 4 can be reflected in the direction of the mesh member 3 and used for heating. Return to the plate 2 to increase the efficiency of using heat rays. Reference numeral 14 denotes an intermediate plate for removing heat of the hot ascending airflow in the housing 4, and is connected to the rear surface of the housing 4. The intermediate plate 14 is made of, for example, aluminum and has high thermal conductivity. The housing 4 to which the intermediate plate 14 is connected is also made of, for example, aluminum or the like, which has high thermal conductivity and heat dissipation. Therefore, the heat received by the intermediate plate 14 by the hot ascending air flow is radiated by the rear surface of the housing. The intermediate plate is designed such that a gap is formed between the intermediate plate and the side wall of the housing 4. Note that the intermediate plate 14 may be formed integrally with the back surface of the housing 4. In this embodiment, the intermediate plate 14 is connected to the back surface of the housing 4, but may be connected to the side surface of the housing. Further, the gap 7 between the strip-shaped reflection plates 6 is formed by the ascending airflow in the housing 4 passing through the gap between the intermediate plate 14 and the side wall of the housing 4 and the hole 8 on the upper surface of the housing 4 or the housing 8. To the hole 9 above the front of the vehicle. That is, the holes 8 and 9 are the first ventilation holes. Similar technical effects can be obtained by disposing a perforated plate member instead of the reflecting plate 6 which is a strip-shaped member. Further, the strip-shaped member or the perforated plate member may be connected to the opening 5 of the gutter-shaped reflection plate 2. In this case, when the member has a reflection function, the first aspect of the present invention is described.
The heater described in No. 3 is obtained.

Reference numerals 10 and 11 denote second ventilation holes provided below the housing 4. A spacer 12 is provided on the lower surface of the housing 4.
Is provided, and a hole 13 is provided as a second ventilation hole. The spacer 12 may be a tongue piece cut and raised from the lower surface of the housing 4 or a foot member may be attached. By these,
The flow of air due to natural convection in the housing 4 enters through the second ventilation hole and surely escapes through the first ventilation hole, and hot air does not cause the temperature of the mesh member 3 to rise.

[0012] Irradiation of heat rays to the heated area in front of the heater is, of course, achieved by two methods: direct light from the bulb 1 and reflection from the reflector, as described above. The temperature gradient can be changed and changed to some extent depending on the design of the reflector and the positional relationship with the light bulb 1. Therefore, the irradiation state of the heat ray to the net member 3 also slightly changes. In the above embodiment, the net member 3 is
Since it protrudes outside the housing 4, the temperature of this protruding portion that can be easily touched by the user can be reliably kept at 80 ° C. or less. Therefore, a safe and small-sized reflected radiation heater can be provided.

By the way, since the above-mentioned heater is used by arranging it in the riser portion, from the viewpoint of ease of use and safety, the light bulb 1 is used.
Is provided on the front side of the housing 4 at a position in front of the heater and beside the net member 3, and a fuse is arranged on the back side of the position. This is because the inside of the housing 4 is the most difficult to raise the temperature. FIG. 2 is a front view of the heater.

FIG. 5 is an explanatory view of an embodiment of a reflection radiation type heater equipped with the overheat prevention device of the present invention. The over-temperature prevention device is, for example, a thermostat that automatically cuts off current when a certain set temperature is reached, or a thermal fuse that cuts off a conductive member when the temperature exceeds a certain set temperature. And this temperature rise prevention device is the most preferable position,
It is attached below the mesh member 3 on the front surface in the housing 4. The dimensions of the thermostat are, for example, 10 mm × 20 mm × 10 mm, and cut off the current flowing through the halogen incandescent lamp 1 at a set temperature of 80 ° C.
The reason for attaching the lower part of the front net member 3 in the housing 4 in this manner is a position where the direct light from the halogen incandescent lamp 1 is not received.
This is for measuring the temperature of the front surface of the housing 4 that is warmed by the light reflected by the. Further, since the thermostat is small as described above, it does not block the second ventilation hole so much.

[0015]

As can be understood from the above description of the invention and the description of the embodiments, according to the present invention, it is a reflection radiant type heater, which satisfies safety and, for example, is provided under a kitchen sink. Thus, a compact heater that can be used by placing it in the riser of the vehicle can be obtained. In addition, since such a small heater may be installed under a desk, it can be used as a local heater for feet, hands, etc. in a living space where dust is disliked. Furthermore, since the intermediate plate is arranged in the housing, the temperature above the reflected radiation heater can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an embodiment of a reflection radiation type heater of the present invention.

FIG. 2 is a front view of an embodiment of the reflection radiation type heater of the present invention.

FIG. 3 is an explanatory diagram of a conventional blower-type heater.

FIG. 4 is an explanatory view of a conventional reflection radiation type heater.

FIG. 5 is an explanatory view of an embodiment of a reflection radiation type heater provided with the overheat prevention device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 halogen incandescent lamp 2 gutter-like reflector 3 mesh member 4 housing 5 opening 6 reflector 8, 9 first ventilation hole 10, 11, 13 second ventilation hole 12 spacer 14 intermediate plate

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24C 7/04-7/06 F24H 3/00

Claims (13)

(57) [Claims] 1. A reflection radiation heater in which a rod-shaped lamp or a heater and a gutter-shaped reflector are arranged in a housing provided with a mesh member on a front surface thereof, wherein the heater is on the front mesh member or the housing. A first ventilation hole is provided on the upper surface of the housing, and a second ventilation hole is provided on the lower surface of the housing or below the other surface. Above the gutter-shaped reflection plate, the rear surface of the housing or / and Placing an intermediate plate connected to the side surface, the air flow due to natural convection rising in the housing, mainly to the extent that it passes through the first ventilation hole, the mesh member and the opening of the reflector are separated A reflected radiation heater characterized by the following. 2. A reflection radiant heater in which a rod-shaped lamp or heater and a gutter-shaped reflector are arranged in a housing provided with a net member on the front surface, wherein the heater is on the net member on the front surface or the housing. A first ventilation hole is provided on the upper surface of the housing, and a second ventilation hole is provided on the lower surface of the housing or below the other surface. Above the gutter-shaped reflection plate, the rear surface of the housing or / and Placing an intermediate plate connected to the side surface, the flow of air due to natural convection rising in the casing mainly passes through the first ventilation hole, and the surface temperature at any position of the mesh member becomes 80 ° C or less. A reflection radiation type heater characterized in that the mesh member and the opening of the reflection plate are separated to an extent. 3. A reflection radiant heater in which a rod-shaped lamp or a heater and a gutter-shaped reflecting plate are arranged in a housing provided with a mesh member on a front surface thereof, wherein the heater is provided on the mesh member on the front surface or the housing. A first ventilation hole is provided on the upper surface of the housing, and a second ventilation hole is provided on the lower surface of the housing or below the other surface. Above the gutter-shaped reflection plate, the rear surface of the housing or / and Placing an intermediate plate connected to the side surface, the air flow due to natural convection rising inside the housing is mainly between the mesh member and the reflection plate so as to pass through the first ventilation hole. A reflection radiation heater, wherein a strip-shaped member or a perforated plate member is arranged at a position outside the opening of the reflection plate. 4. A reflection radiant heater in which a rod-shaped lamp or a heater and a gutter-shaped reflector are arranged in a housing provided with a mesh member on the front surface, wherein the heater is on the mesh member on the front surface or the housing. A first ventilation hole is provided on the upper surface of the case, and a second ventilation hole is provided on the lower surface of the housing after projecting the spacer from the lower surface, and a housing is provided above the gutter-shaped reflection plate. An intermediate plate connected to the back or / and side surface of the body is arranged, and the net member and the reflector are arranged so that the flow of air due to natural convection rising in the casing mainly passes through the first ventilation hole. Wherein a strip-shaped member or a perforated plate member is disposed at a position outside the opening of the reflection plate. 5. The switch according to claim 1, wherein a switch for a bar-shaped lamp or a heater is mounted at a position next to the mesh member on the front surface, and a space behind the front surface at that position is a fuse chamber. The reflected radiation heater according to claim 4. 6. The reflection radiation type heater according to claim 1, wherein the rod-shaped lamp is a rod-shaped halogen incandescent lamp. 7. The reflection radiation type heater according to claim 1, wherein the mesh of the mesh member is in a lattice shape. 8. The gutter-shaped reflector is divided into a front part and a rear part, and an air flow by natural convection is generated in the gap. The reflected radiation heater according to any one of the above. 9. The gutter-shaped reflector has a curvature different between a front part and a rear part, and the rear part is configured to be away from the rod-shaped lamp. The reflected radiation type heater according to claim 1. 10. The front portion of the gutter-shaped reflector has a parabolic shape in cross section perpendicular to the longitudinal direction, and the bar-shaped lamp is arranged so as to be deviated from the focal point to the top side. Item 10. A reflected radiation heater according to Item 9. 11. The reflection radiation type heater according to claim 1, wherein the net member projects outside the housing. 12. The reflection radiation type according to claim 1, wherein an excessive temperature rise prevention device is arranged in the housing so as to detect a temperature of a front surface of the housing. heater. 13. A reflection-radiation heater in which a rod-shaped lamp or heater and a gutter-like reflector are arranged in a housing provided with a net member projecting outside the housing, wherein the heater is provided on a front net member. Alternatively, a first ventilation hole is provided on the upper surface of the housing, and a second ventilation hole is provided below the lower surface of the housing or other surface, the flow of air due to natural convection rising in the housing, A reflection radiation type heater characterized in that a gutter-shaped reflection plate is designed to be deep so as to mainly pass through the first ventilation hole and a slit or a hole is provided in the vicinity of the opening.