JP6611680B2 - Wall-mounted heater - Google Patents

Description

  The present invention relates to a wall-mounted heater suitable for a dressing room.

In winter, the dressing room attached to the bathroom is also cold. In the dressing room, since the clothes are taken off, there is a concern that the body temperature will drop. In cold districts, full-scale heating facilities are provided in dressing rooms, but there are not many full-scale heating facilities in dressing rooms except in cold regions (non-cold regions).
With changes in lifestyle, it is desirable to install a simple heater even in non-cold regions.
Thus, various simple heaters suitable for dressing rooms have been proposed (see, for example, Patent Document 1 (FIGS. 2 and 3)).

  As shown in FIG. 2 of Patent Document 1, the wall-mounted heater that is hung on the wall (A) (the letters or numbers in parentheses indicate the symbols described in Patent Document 1. The same applies hereinafter) A fan (13) is built in, and a bar-like heater (5) and a curved reflector (7) are provided in the lower part and on the indoor side. When the heater (5) is energized, the heater (5) emits infrared rays, a part is directly irradiated into the room, the remaining part is reflected by the reflecting plate (7), and the reflected infrared ray is irradiated into the room.

  If the heater (5) or the like is overheated for some reason, the resin housing will be deformed by heat, and as a countermeasure, an air flow will be generated by the blower fan (13) to keep the temperature of the housing at an appropriate temperature. ing. For some reason, it is conceivable that the reflector (7) is soiled after many years of use, and the reflectance is lowered. When the reflectivity decreases, the reflector (7) accumulates heat, becomes high temperature, and is left in an overheated state if left unattended.

However, since there is a concern that the fan may be overheated despite the operation of the blower fan (13), the temperature sensor (19) is provided between the reflector (7) and the blower fan (13), that is, inside the housing. Has been placed. When the temperature detected by the temperature sensor (19) reaches, for example, 70 ° C., power supply to the heater (5) is stopped. In this state, the blower fan (13) continues to rotate. When the temperature detected by the temperature sensor (19) reaches, for example, 40 ° C., the blower fan (13) is stopped.
As described above, thermal deformation of the housing is prevented.

By the way, when the wall-mounted heater is provided in a dressing room attached to the bathroom, the following problems occur.
In the dressing room, lockers will be provided to put the clothes you removed. When the bather is a traveler, it is assumed that a relatively large luggage such as a bag or a suitcase is placed on the locker. Then, the space between the person and the wall-mounted heater is blocked by the luggage.

In addition, the dressing room is often unattended during bathing.
Wall-mounted heaters provided in such special places are required to detect abnormalities more quickly, but abnormal detection is delayed by being unattended or blocked by luggage.

  In addition, in the wall-mounted heater of Patent Document 1, since the main focus is on protecting the resin casing, the temperature sensor (19) mainly detects the temperature of the casing. Specifically, in FIG. 2 of Patent Document 1, when the heater (5) or the like becomes abnormally hot, the reflector (7) becomes hot, and the radiant heat emitted from the back surface of the reflector (7) is a temperature sensor. Irradiated at (19). However, since the temperature sensor (19) itself gives radiant heat to the surrounding resin casing, the temperature rise becomes slow. Therefore, the temperature sensor (19) does not detect an abnormality until the surrounding resin casing reaches around 70 ° C. As a result, in the arrangement of the temperature sensor (19) in Patent Document 1, abnormality detection is delayed.

  From the above knowledge, a structure for detecting abnormal overheating more quickly is required as a wall-mounted heater placed in a special place called a dressing room.

JP 2005-106372 A

  An object of the present invention is to provide a wall-mounted heater that can detect abnormal overheating more quickly so that it can be placed in a special place called a dressing room.

The invention according to claim 1 is a wall-mounted heater including a housing attached to a wall and a heater provided in a lower portion of the housing.
The housing includes a case main body applied to the wall, a sub case extending from the upper half of the case main body into the room, and a front cover that covers the front surface of the sub case.
The lower part of the case body and the bottom of the sub case form a storage part of the heater and a storage part of a reflector attached to the heater,
A through hole is provided at the bottom of the sub case at a position along the upper edge of the reflector.
An overheat detection element that detects an overheat state and stops power supply to the heater is disposed in the sub case and above the through hole.

  In the invention according to claim 2, the reflecting plate is integrally provided with a guide portion that rises obliquely toward the room at the upper portion, and hot air rising along the reflecting surface of the reflecting plate is passed through the guide portion. It is configured to be guided to.

  The invention according to claim 3 is characterized in that the overheat detecting element is attached to a support plate that rises along an edge of the through hole on the wall side.

  The invention according to claim 4 is characterized in that the overheat detecting element is a thermostat provided in a power supply circuit to the heater.

  The invention according to claim 5 is characterized in that the through hole is formed in a notch hole shape at the front edge of the bottom of the sub case so as to open into the room.

  In the invention which concerns on Claim 6, the ventilation mechanism is incorporated in the housing | casing, The air blower which blows off the air supplied by a ventilation mechanism is provided in the reflecting plate, It is characterized by the above-mentioned.

In the invention which concerns on Claim 1, the through-hole is provided in the bottom of the subcase which comprises a housing | casing in the position along the upper edge of the reflecting plate attached to a heater. An overheat detection element that detects an overheat state and stops power supply to the heater is disposed above the.
When the heater and / or the reflecting plate become hot, hot air rises along the reflecting plate. This rising hot air reaches the overheat detecting element through the through hole. That is, the hot air reaches the overheat detection element directly. Abnormal overheating of a heater or the like is detected by the overheat detection element without depending on the temperature of the housing.
Therefore, according to the present invention, a wall-mounted heater capable of detecting abnormal overheating more quickly, that is, a wall-mounted heater suitable for a special place such as a dressing room is provided.

  In the invention which concerns on Claim 2, the reflecting plate is integrally provided with the guide part which raises diagonally toward the interior in the upper part. Since hot air rising along the reflection surface of the reflector is guided to the through hole by the guide portion, the hot air can be more efficiently guided to the overheat detection element.

  In the invention which concerns on Claim 3, the overheat detection element is attached to the support plate which stands | starts up along the edge by the side of the wall of a through-hole. Since the hot air passing through the through hole rises along the vertical support plate, the hot air can be more efficiently guided to the overheat detecting element.

  In the invention which concerns on Claim 4, an overheat detection element is a thermostat provided in the electric power feeding circuit to a heater. The thermostat is a general-purpose product and is inexpensive. As a result, the manufacturing cost of the wall-mounted heater can be reduced.

  In the invention which concerns on Claim 5, the through-hole is formed in the front edge of the bottom of a subcase in the shape of a notch hole so that it may open indoors. Compared to the case where the through hole is provided in the center of the bottom of the sub case, the formation of the notch hole on the front edge simplifies the structure of the mold used for resin injection molding, which can reduce the manufacturing cost. it can.

In the invention which concerns on Claim 6, the ventilation mechanism is incorporated in the housing | casing, The air blowing outlet which blows off the air supplied by a ventilation mechanism to a reflecting plate is provided. The present invention is also suitable for a wall-mounted heater provided with a blower mechanism in addition to a heater. While the heater is energized, the basic operation is to operate the blower mechanism. However, there is no problem that the blower mechanism will fail for some reason.
When a problem occurs in the air blowing function, there is a concern that the temperature of the heater and / or the reflector increases rapidly. However, according to the present invention, it is possible to quickly overheat without waiting for the temperature of the housing to rise. It is possible to take measures such as detecting with an overheat detecting element and stopping energization.

(A) is a front view of the wall-mounted heater based on this invention, (b) is a b arrow line view of (a). FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is an effect | action figure of a through-hole and an overheat detection element.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

Fig.1 (a) is a front view of the wall-mounted heater 10, (b) shows the b arrow view of (a).
As shown in FIG. 1B, the wall-mounted heater 10 has a triangular shape including a front surface 11, a ceiling surface 12, and a back surface 13 in a side view, and the back surface 13 is a surface that is attached to a wall. The ceiling surface 12 is not a horizontal plane but an inclined surface inclined toward the indoor side. The front surface 11 is a heating surface and is a curved surface. The end face is closed with a mesh plate 14.

  As shown in FIG. 1A, the wall-mounted heater 10 is a horizontally long box, and includes a first heater 15 that extends laterally and a second heater 16 that is disposed below the first heater 15. Yes.

In this example, two heaters 15 and 16 are provided, but the number of heaters may be one or three or more, and the number is arbitrary.
The heaters 15 and 16 are preferably bar heaters extending horizontally, but may be horizontally long planar heaters.
Between the first heater 15 and the second heater 16, horizontally extending air blowing ports 17 and 17 are provided.

A sectional view taken along line 2-2 of FIG. 1B is shown in FIG.
As shown in FIG. 2, the overheat detection element 21 is provided above the first heater 15 and on the left side of the center 18 in the left-right direction. Further, a control board 22 is provided above the first heater 15 and on the right side of the center 18. The control board 22 includes a control unit 23.

A sectional view taken along line 3-3 of FIG. 2 is shown in FIG.
As shown in FIG. 3, a casing 24 which is a main element of the wall-mounted heater 10 includes a case main body 25 arranged on the wall side, and a sub case 26 attached to the upper side of the case main body 25 and on the indoor side. And a front cover 27 that covers the indoor side surface of the sub case 26.

  The case main body 25 is connected to the lower portion 25a having a substantially L-shaped cross section, the upper end of the lower portion 25a, the half cylinder portion 25b opened to the indoor side, and the vertical wall portion extending upward from the upper end of the half cylinder portion 25b. 25c, an inclined part 25d extending from the upper end of the vertical wall part 25c to the wall side, a step part 25e provided at the wall side end part of the inclined part 25d, and a horizontal part extending from the upper end of the step part 25e to the wall side 25f.

  The sub case 26 includes a bottom 26a, a half cylinder portion 26b provided above the bottom 26a and opened to the wall side, a first rib 26c extending horizontally from the half cylinder portion 26b to the indoor side, The rib 26d, the 3rd rib 26e, the wall part 26f extended upwards from the upper end of the half cylinder part 26b, and the 4th rib 26g extended horizontally from this wall part 26f to an indoor side are provided.

  A through hole 29 penetrating vertically is provided in the bottom 26 a of the sub case 26. The through hole 29 may be provided in the middle of the bottom 26a, but in this example, the through hole 29 is formed at the front edge so as to open to the indoor side. That is, the through hole 39a is formed in the bottom 26a in the shape of a notch. Compared with the case where the through hole 29 is provided at the center of the bottom 26a of the sub case 26, the structure of the mold used for resin injection molding becomes simpler and the manufacturing cost is reduced when the front edge is formed in the shape of a notch. Can be lowered.

  The front cover 27 is a cover having a front surface 11 that is a room-side surface and a ceiling surface 12 that is a ceiling-side surface, so that the control board (FIG. 2, reference numeral 22) and the overheat detection element 21 can be maintained and inspected. In addition, the sub case 26 can be opened and closed. In the closed state, the ceiling surface 12 of the front case 27 is placed on the inclined portion 25 d of the case body 25. Therefore, a slight gap C1 is inevitably generated between the inclined portion 25d and the ceiling surface 12. Similarly, a slight gap C2 is inevitably generated between the ceiling surface 12 of the front case 27 and the step portion 25e of the case body 25.

  As described above, the casing 24 includes the case main body 25 applied to the wall, the sub case 26 extending from the upper half of the case main body 25 into the room, and the front cover that covers the front surface of the sub case 26. 27, the lower portion 25 a of the case body 25 and the bottom 26 a of the sub case 26 formed a storage portion for the heaters 15 and 16 and the reflector 30.

Then, a vertical line 29 b is drawn along the edge 29 a on the wall side of the through hole 29. The indoor side ends of the second to fourth ribs 26d, 26e, and 26g are formed so as to be substantially aligned with the vertical line 29b.
The support plate 37 is passed to the edge 29a and the second rib 26d, and the overheat detecting element 21 is attached to the indoor side surface of the support plate 37. The material of the support plate 37 is preferably a metal from the viewpoint of strength, but may be a resin.

The overheat detecting element 21 is a temperature sensor, and any type can be used as long as it can generate a temperature signal.
As a temperature sensor, a thermistor, a metal resistance temperature sensor, a thermocouple, and a thermostat, which are types of semiconductor sensors, can be used.
The thermistor is a semiconductor having a correlation between an electric resistance value and temperature, for example, a beryllium titanate semiconductor ceramic.

The metal resistance temperature sensor is a metal having a correlation between an electric resistance value and temperature, and is, for example, a platinum resistor, a gold resistor, a silver resistor, or a copper resistor.
A thermocouple is a pair in which dissimilar metals are joined together, and generates an electromotive force according to temperature.
In the above thermistor, metal resistance temperature sensor, and thermocouple, the temperature is converted into an electric signal, this electric signal is input to the control unit (FIG. 2, reference numeral 23), and a power supply interruption command is issued by the control unit.

  On the other hand, the thermostat directly connects and disconnects the power feeding circuit to the first and second heaters 15 and 16. That is, the thermostat includes a bimetal obtained by bonding two or more different kinds of metals. The bimetal deforms due to the difference in thermal expansion. By utilizing this modification for switching, the power feeding circuit can be directly connected / disconnected, and by providing a circuit for detecting the power feeding state to the first and second heaters 15 and 16 separately, the thermostat operates and the power feeding is cut off. It can be detected whether or not.

  However, it is not possible to measure multiple temperatures with a thermostat. It simply interrupts the power supply in an overheated state. On the other hand, a thermostat is inexpensive because it has a simple principle and does not require any special control. For this reason, a thermostat is preferably used as the overheat detecting element 21. When a thermostat is adopted, the thermostat is disposed at a position where the main power supply circuit supplied to the wall-mounted heater 10 is connected to the first and second heaters 15 and 16. It is good also as a structure which connects / disconnects a feed circuit.

  The two half cylinder portions 25b and 26a form a storage portion for storing a blower mechanism, which will be described later, and a wind guide tunnel 28L. The wall part 26f is overlapped with the vertical wall part 25c, and the mutual upper end positions are the same height.

The first heater 15 is disposed substantially below the half cylinder portions 25b and 26a. Assume a slanted line L1 that passes through the center of the first heater 15 and descends so as to approach the wall. The second heater 16 is disposed below the first heater 15 and on the oblique line L1.
In this example, the inclination angle θ of the oblique line L1 with respect to the horizontal line is 40 °. θ can be arbitrarily set from the range of 35 ° to 50 °. However, as θ is smaller, the heating surface can be made parallel to the floor, and the height dimension of the wall-mounted heater 10 can be reduced.

  A reflector 30 having a W-shaped cross section is attached to the first and second heaters 15 and 16. The reflecting plate 30 includes a first horizontal plane 32, a first lower surface 33 that descends from the rear end of the first horizontal plane 32, an inclined surface 34 that extends substantially along the oblique line L1 from the lower end of the first lower surface 33, The second horizontal surface 35 extends from the rear end of the inclined surface 34 toward the wall side, and the second lower surface 36 descends from the rear end of the second horizontal surface 35. The air outlet 17 described in FIG. 1 is not shown in FIG. 3 because of the cross-sectional position, but the air outlet 17 is provided on the inclined surface 34.

  And the reflecting plate 30 is integrally provided with a guide portion 31 that rises obliquely toward the interior at the top. The tip (inner side end) of the guide portion 31 extends to the vicinity of the edge 29 a on the wall side of the through hole 29. That is, the hot air rising along the reflection surface (inner side surface) of the reflection plate 30 is guided to the through hole 29 by the guide portion 31.

4 is a cross-sectional view taken along line 4-4 of FIG.
As shown in FIG. 4, the fan housing portion 38 and the air guide tunnels 28 </ b> L and 28 </ b> R (L is a left side when viewed from the room and R is a subscript indicating the right side) are formed on the upper portion of the housing 24. . The blower mechanism 40 is housed in the fan housing portion 38. The blower mechanism 40 is preferably a fan motor 41 and sirocco fans 42L and 42R rotated by the fan motor 41. The sirocco fans 42L and 42R are fans in which a large number of elongated blades are provided in a cylinder. Since the fan is a rotating body, the central fan shafts 43L and 43R are supported by bearings 44L and 44R provided in the fan housing portion 38. Below the position corresponding to the sirocco fans 42L and 42R of the fan housing portion 38 is communicated with the back surface of the reflector 30 via an air passage (not shown).

  When the sirocco fans 42L and 42R are rotated by the fan motor 41, the inside of the sirocco fans 42L and 42R becomes lower than the atmospheric pressure. Therefore, room air enters the sirocco fans 42L and 42R through the mesh plates 14 and 14. Centrifugal force is applied by the sirocco fans 42L and 42R, the air is pressurized to atmospheric pressure or higher, and this air is blown to the back surface of the reflecting plate 30 through the air passage, and between the reflecting plate 30 and the case main body 25. The air is gently blown into the room from the gaps and the air blowing ports 17 and 17, and overheating on the back side of the first and second heaters 15 and 16 is prevented.

  The room temperature sensor 46 is a sensor that measures the room temperature. In this example, the room temperature sensor 46 is disposed in the right air guide tunnel 28R toward the right and in the vicinity of the mesh plate 14. That is, the room temperature sensor 46 is disposed at the entrance of the air guide tunnel 28R. The room temperature sensor 46 always measures the temperature of the intake air as the room temperature.

The operation of the wall-mounted heater 10 having the above configuration will be described with reference to FIG.
Hereinafter, an operation when the reflection surface of the reflection plate 30 is clean, an operation when the reflection surface of the reflection plate 30 is dirty, and an operation when a malfunction occurs in the air blowing mechanism 40 for some reason will be described in order. To do.

Although there are various problems with the blower mechanism 40, the following cases are assumed.
In FIG. 4, the motor shaft of the fan motor 41 and the shafts of the sirocco fans 42L and 42R are mechanically connected by pins or the like, but the mechanical connection may be broken due to mechanical fatigue or overload. . Then, although the fan motor 41 is rotating, it is assumed that the sirocco fans 42L and 42R do not rotate and a predetermined air volume cannot be generated. Although the mechanical connection is sound, it is also assumed that the blades constituting the sirocco fans 42L and 42R drop off and cannot generate a predetermined air volume. In addition, since the abnormality of the fan motor 41 can be monitored with a circuit breaker or the like, it is excluded here.

○ When the reflecting surface of the reflector 30 is clean:
As shown in FIG. 5, infrared rays 51 and 51 are emitted from the first and second heaters 15 and 16 into the room. In addition, the reflected infrared rays 52 and 52 reflected by the reflecting plate 30 are irradiated into the room.
In parallel, the surrounding air is warmed by the lower second heater 16, and the generated hot air rises as shown by the arrow (1).
The hot air generated by the first heater 15 merges with the hot air of the arrow (1).

  As indicated by the arrow (2), the merged hot air moves along the first horizontal plane 32 and the guide part 31, reaches the through hole 29, enters the front cover 27 through the through hole 29, and is supported by the support plate. It rises along 37 and reaches the overheat detecting element 21. The hot air flowing on the outer peripheral surface of the overheat detecting element 21 rises as indicated by the arrow (3), and is discharged upward through the gap C1 and the gap C2 as indicated by the arrow (4).

Since the reflector 30 is clean and has a high reflectance, the temperature does not increase so much. In addition, the temperature is lowered by being appropriately cooled by the blower mechanism 40.
Therefore, the temperature of the hot air indicated by the arrow (2) is lowered, and no abnormality is detected by the overheat detection element 21.

○ When the reflecting surface of the reflector 30 is dirty:
In FIG. 5, since the reflectance of the reflecting plate 30 is lowered, the reflected infrared ray 52 is weakened. As much as it weakens, heat builds up and the reflector 30 becomes hot. It is considered that heat is stored in the reflector 30.
Then, the temperature of the hot air indicated by the arrow (2) increases, and the overheat detection element 21 detects an abnormality.

For comparison, a case where the through hole 29 is blocked (a case where the through hole 29 is not provided) will be considered.
Since the reflecting plate 30 is dirty, the reflecting plate 30 becomes high temperature, and the bottom 26 a of the sub case 26 and the lower portion 25 a of the case body 25 are heated by the reflecting plate 30. Heat is transmitted in the order of bottom 26a → half cylinder portion 26b → wall portion 26f, ribs 26c, 26d, 26e, and 26g, and the temperature of the sub case 26 rises as a whole. The same applies to the case body 25.

  It is known that how heat is transmitted is classified into three types: radiation, convection, and heat conduction. When the through-hole 29 is closed (when the through-hole 29 is not provided), heat is transmitted by heat conduction, and the overheat detection element 21 detects an abnormality after the casing 24 is warmed up as a whole. The time until detection becomes longer.

  On the other hand, in the present invention, the hot air of the arrow (2) directly warms the overheat detecting element 21 by convection, so the overheat detecting element 21 quickly detects an abnormality regardless of the temperature of the housing 24. Due to this detection, power supply to the heaters 15 and 16 is stopped, so that deformation of the casing 24 and the like are prevented.

○ When a malfunction occurs in the blower mechanism 40:
In FIG. 5, even if the reflecting plate 30 is clean, the temperature of the reflecting plate 30 rises when the air that has cooled the reflecting plate 30 stops (or the air volume decreases). The hot air in the arrow (2) reaches a high temperature and reaches the overheat detection element 21. As a result, the overheat detecting element 21 detects abnormal overheating and stops power feeding to the heaters 15 and 16.

  As apparent from the above description, according to the present invention, the wall-mounted heater 10 that can detect abnormal overheating more quickly, that is, the wall-mounted heater 10 suitable for a special place such as a dressing room is provided. Provided.

Next, the structural advantages of the present embodiment will be described supplementarily.
The reflector plate 30 may be a simple circular cross-section plate, but a stepped form as shown in FIG. 3 is recommended. That is, in FIG. 5, all of the hot air indicated by the arrow (1) goes to the through hole 29 through the inclined surface 34, the first falling surface 33, and the first horizontal surface 32. This is because the detection accuracy of the overheat detecting element 21 can be increased because there is no diffusion of hot air.

Moreover, although the guide part 31 can be omitted, it is possible to efficiently guide the hot air indicated by the arrow (2) to the through hole 29 if provided.
In addition, the support plate 37 can be omitted, but if it is omitted, the flow in the front cover 27 in the arrow (2) diffuses and the detection of the overheat detecting element 21 is delayed. Therefore, it is desirable to provide the support plate 37.

In FIG. 5, in order to ensure the flow of the arrow (2), the flow of the arrows (3) and (4) is essential. This is because a healthy flow can be maintained if there is a traffic jam somewhere in the flow.
Therefore, in FIG. 5, when the front cover 27 is closely attached to the case body 25 and the gaps C1 and C2 cannot be secured, it is necessary to provide an appropriate through hole in the front cover 27.

However, there is a concern that dust or foreign matter may fall into the housing 24 from the provided through hole.
In this respect, in the present embodiment, since the gaps C1 and C2 are provided as in the labyrinth structure, the flow of the arrow (4) can be secured while maintaining the opening / closing performance of the front cover 27. Since it has a maze (labyrinth) structure, there is no concern that dust or foreign matter may enter the housing 24.

  In FIG. 5, the rib 26e and the rib 26g can be omitted. However, when the rib 26e and the rib 26g are omitted, the flow of the arrow (3) flows obliquely, that is, along an oblique line connecting the overheat detecting element 21 and the entrance of the gap C1. This oblique flow affects the flow of arrow (2). In this respect, in the present embodiment, the rib 26e and the rib 26g are provided, so that the stream of hot air flowing along the overheat detecting element 21 can be directed vertically, and the hot air can be effectively applied to the overheat detecting element 21. it can.

In FIG. 2, the through hole 29 and the overheat detection element 21 may be provided at arbitrary positions, for example, near the center 18. However, the control board 22 is vulnerable to heat.
In the present embodiment, the through hole 29 and the overheat detecting element 21 are arranged on the left side with respect to the center 18, and the control board 22 is arranged toward the left side, so that it is vulnerable to heat at a position sufficiently away from the through hole 29. A control board 22 was provided. As a result, the control board 22 can be hardly affected by heat.

  The wall-mounted heater 10 of the present invention is suitable for a dressing room, but can also be provided in a room with a high unattended ratio such as a rest room or a laundry drying room, in addition to the dressing room.

  The present invention is suitable for a wall-mounted heater provided in a dressing room.

  DESCRIPTION OF SYMBOLS 10 ... Wall-mounted heater, 16, 17 ... Heater, 17 ... Air outlet, 21 ... Overheat detection element, 24 ... Housing, 25 ... Case main body, 25a ... Lower part of case main body, 26 ... Sub case, 26a ... Sub The bottom of the case, 27 ... front cover, 29 ... through hole, 29a ... edge on the wall side of the through hole, 30 ... reflector, 31 ... guide part, 37 ... support plate, 40 ... air blowing mechanism

Claims (6)

In a wall-mounted heater comprising a housing attached to a wall and a heater provided at the bottom of the housing,
The housing includes a case main body applied to the wall, a sub case extending from the upper half of the case main body into the room, and a front cover that covers the front surface of the sub case.
The lower part of the case body and the bottom of the sub case form a storage part of the heater and a storage part of a reflector attached to the heater,
A through hole is provided at the bottom of the sub case at a position along the upper edge of the reflector.
An overheating detection element that detects an overheating state and stops power supply to the heater is disposed in the sub case and above the through hole.   The reflection plate is integrally provided with a guide portion that rises obliquely toward the room at the top, and hot air rising along the reflection surface of the reflection plate is guided to the through hole by the guide portion. The wall-mounted heater according to claim 1, which is configured as described above.   The wall-mounted heater according to claim 1 or 2, wherein the overheat detecting element is attached to a support plate that rises along an edge of the through hole on the wall side.   The wall-mounted heater according to any one of claims 1 to 3, wherein the overheat detection element is a thermostat provided in a power supply circuit to the heater.   The wall-mounted heating according to any one of claims 1 to 4, wherein the through hole is formed in a notch hole shape at the front edge of the bottom of the sub case so as to open into the room. Machine.   The wall hanging according to any one of claims 1 to 5, wherein an air blowing mechanism is built in the housing, and an air outlet for blowing air supplied by the air blowing mechanism is provided on the reflection plate. Type heating machine.

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