JP6657022B2 - 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. At a dressing room, you may be concerned about lowering your body temperature because you take off your clothes. In cold regions, full-fledged heating facilities are provided in dressing rooms, but in cold regions (non-cold regions), dressing rooms are rarely equipped with full-scale heating facilities.
With a change in lifestyle, it is desired to install a simple heater even in a cold region.
Therefore, various simple heaters suitable for a dressing room have been proposed (for example, see Patent Document 1 (FIGS. 1 and 3)).

As shown in FIG. 1 of Patent Document 1, a horizontally long wall-mounted heater is attached to a wall of a dressing room.
As shown in FIG. 3 of Patent Document 1, the wall-mounted heater includes a carbon lamp heater (11, 11) (numbers in parentheses indicate reference numerals described in Patent Document 1; the same applies hereinafter) and a reflector. (12, 12), a PTC heater (8), and an impeller (5).
Hot air heating is performed using a combination of the PTC heater (8) and the impeller (5), and radiant heating is performed using a combination of the carbon lamp heaters (11, 11) and the impeller (5).

According to Patent Literature 1, complex heating can be performed.
Meanwhile, as one of the full-scale heating facilities, there is a heat pump air conditioner (so-called air conditioner) including an outdoor unit and an indoor unit. For the outdoor unit and the indoor unit, a pipe for reciprocating the heat medium is essential. Experts install the indoor unit on the wall as the pipes penetrate the wall.

On the other hand, since the heater described in Patent Document 1 does not require piping, a non-expert may attach such a heater to a wall.
Incidentally, the horizontally long heater needs to be mounted horizontally so that the axes of the carbon lamp heaters (11, 11) and the impeller (5) are horizontal (including substantially horizontal). However, as described above, when a non-expert installs the heater, the heater may be installed at an angle.

If the heater is installed diagonally beyond the allowable limit, the following problems occur in the heater.
First, when the right side is high and the left side is low, hot air is gathered to the right by the heat draft principle, and the right side of the heater becomes locally hot. If the left side is high, the left side of the heater becomes locally hot. A control board is built in one of the left, center, and right sides of the heater. However, since the control board is weak to heat, if the heater is installed at an angle, the control board may be affected depending on the direction of the inclination.

  Next, when the shaft of the impeller (5) is installed obliquely beyond the allowable limit, an unexpected force is applied to the bearing, shortening the life of the bearing and increasing repair costs such as replacement of parts.

As a countermeasure, it is conceivable to attach an inclination sensor to the heater. However, the heater becomes expensive for the tilt sensor.
There is a need for a structure that can take measures against inclination without using an inclination sensor.

JP 2007-40634 A

  An object of the present invention is to provide a structure in which a countermeasure against inclination can be taken in a heater mounted on a wall.

The invention according to claim 1 is a wall-mounted heater including a horizontally long housing attached to a wall, and a heater provided at a lower portion of the housing.
As viewed from the room, an overheat detection element attached to one of the left and right sides of the housing and above the heater and stopping power supply to the heater when detecting an overheated state of the heater, On the other hand, a room temperature sensor which is mounted above the heater and detects a room temperature is provided, and a control unit which stops power supply to the heater when at least the room temperature sensor detects a temperature corresponding to an overheated state of the heater. and,
The overheat detecting element is a thermostat provided in a power supply circuit to the heater, and the room temperature sensor is a thermistor .

The inventions according to claims 2, horizontally long a housing attached to a wall, the wall-mounted heater that has a heater provided in the lower portion of the housing,
As viewed from the room, an overheat detection element attached to one of the left and right sides of the housing and above the heater and stopping power supply to the heater when detecting an overheated state of the heater, On the other hand, a room temperature sensor which is mounted above the heater and detects a room temperature is provided, and a control unit which stops power supply to the heater when at least the room temperature sensor detects a temperature corresponding to an overheated state of the heater. And
The housing includes a blower mechanism above the heater and a wind guide tunnel for guiding room air to the blower mechanism, and the room temperature sensor is provided at an entrance of the wind guide tunnel.

  The invention according to claim 3 is characterized in that the wind guide tunnel has an entrance provided on one side surface of the housing, and the overheat detection element is provided on the other side of the housing.

  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, and the room temperature sensor is a thermistor.

  In the invention according to claim 1, in a horizontally long housing mounted on a wall, an overheat detecting element is provided on one of the left and right sides of the housing, and a room temperature sensor is provided on the other of the left and right. The control unit monitors the room temperature sensor, and interrupts power supply when the room temperature sensor detects a temperature corresponding to an overheated state of the heater.

  When the housing is mounted at an angle and the overheating detection element side is higher than the room temperature sensor, the hot air generated by the heater gathers at the higher overheating detection element. The overheat state is detected by the overheat detection element. Alternatively, when the temperature of the room temperature sensor is higher than that of the overheat detection element, the hot air generated by the heater gathers at the higher room temperature sensor. The overheat condition is detected by a room temperature sensor.

According to the present invention, an abnormality is detected in any of the left tilt and the right tilt. Specifically, it is possible to detect abnormalities caused by excessive inclination by using an overheat detecting element and a room temperature sensor provided in a normal heater, and safely stop the abnormality. Since no tilt sensor is required, it is possible to suppress an increase in the cost of the heater.
Therefore, according to the first aspect, in the heater mounted on the wall, a structure capable of taking measures against inclination is provided.
In addition, in the invention according to claim 1, the overheat detecting element is a thermostat, and the room temperature sensor is a thermistor. Both thermostats and thermistors are general-purpose products and are inexpensive. As a result, the manufacturing cost of the wall-mounted heater can be reduced.

In the invention according to claim 2, in a horizontally long housing mounted on a wall, an overheat detecting element is provided on one of left and right sides of the housing, and a room temperature sensor is provided on the other of the left and right sides. The control unit monitors the room temperature sensor, and interrupts power supply when the room temperature sensor detects a temperature corresponding to an overheated state of the heater.
When the housing is mounted at an angle and the overheating detection element side is higher than the room temperature sensor, the hot air generated by the heater gathers at the higher overheating detection element. The overheat state is detected by the overheat detection element. Alternatively, when the temperature of the room temperature sensor is higher than that of the overheat detecting element, the hot air generated by the heater gathers at the higher room temperature sensor. The overheat condition is detected by a room temperature sensor.
According to the present invention, an abnormality is detected in any of the left tilt and the right tilt. Specifically, it is possible to detect an abnormality caused by an excessive inclination by using an overheat detecting element and a room temperature sensor provided in a normal heater, and to safely stop the abnormality. Since no tilt sensor is required, it is possible to suppress an increase in the cost of the heater.
According to the second aspect of the present invention, the housing is provided with an air blowing mechanism and a wind guiding tunnel for guiding indoor air to the blowing mechanism, and the room temperature sensor is provided at an entrance of the wind guiding tunnel.
In the event of an abnormality, the hot air is guided to the room temperature sensor through the wind guide tunnel, and the abnormal state is quickly detected.

  In the invention according to claim 3, the wind guide tunnel has an entrance provided on one side surface of the housing, and the overheat detection element is provided on the other side of the housing. The entrance of the wind guide tunnel and the overheat detecting element can be preferably arranged in the wall-mounted heater.

  In the invention according to claim 4, the overheat detecting element is a thermostat, and the room temperature sensor is a thermistor. Both thermostats and thermistors are general-purpose products and are inexpensive. As a result, the manufacturing cost of the wall-mounted heater can be reduced.

(A) is a front view of the wall-mounted heater according to the present invention, and (b) is a view on arrow b 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 of FIG. 2. FIG. 4 is a sectional view taken along line 4-4 of FIG. It is a function diagram of a room temperature sensor and an overheat detection element. It is a control flow figure of a control part.

  An embodiment of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals.

FIG. 1A is a front view of a wall-mounted heater 10, and FIG. 1B is a view as viewed from an arrow b in FIG.
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 to be attached to a wall. The ceiling surface 12 is not a horizontal surface 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 by the mesh plate 14.

  As shown in FIG. 1A, the wall-mounted heater 10 is a horizontally long box, and includes a first heater 15 extending horizontally and a second heater 16 disposed below the first heater 15. I have.

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.
Further, the heaters 15 and 16 are preferably rod-shaped heaters extending horizontally, but may be horizontally long planar heaters.

The term “horizontally long” means that the horizontal dimension on the horizontal side is larger than the vertical dimension on the vertical side. In this example, the ratio of the horizontal dimension to the vertical dimension is about 2: 1, but is not limited to this ratio.
Horizontally extending air outlets 17 are provided between the first heater 15 and the second heater 16.

FIG. 2 is a sectional view taken along line 2-2 of FIG.
As shown in FIG. 2, an overheat detecting element 21 is provided above the first heater 15 and on the left side of the center 18 in the left-right direction. 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 the control unit 23 of the present invention.

FIG. 3 is a sectional view taken along line 3-3 in FIG.
As shown in FIG. 3, a housing 24, which is a main element of the wall-mounted heater 10, includes, for example, a case main body 25 arranged on a wall side and a sub-case provided above the case main body 25 and on the indoor side. 26, and a front cover 27 that covers the indoor side surface of the sub case 26.

  The case main body 25 includes a half cylinder portion 25a that opens to the indoor side. The sub case 26 includes a half-barreled tube portion 26a that opens on the wall side, and a plurality of ribs 26b on the front surface. The two half cylinder portions 25a and 26a form a storage portion for storing a blower mechanism described later and a wind guide tunnel 28L.

The first heater 15 is disposed substantially below the half cylinder portions 25a and 26a. It is assumed that an oblique line 29 is obliquely lowered so as to pass through the center of the first heater 15 and approach the wall. The second heater 16 is arranged below the first heater 15 and on the oblique line 29.
The inclination angle θ of the oblique line 29 with respect to the horizontal line is 40 ° in this example. θ can be set arbitrarily 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 of the wall-mounted heater 10 can be reduced.

  The first and second heaters 15 and 16 are provided with a reflecting plate 31 having a W-shaped cross section. The reflector 31 includes a first horizontal plane 32, a first descending surface 33 descending from the rear end of the first horizontal plane 32, an inclined surface 34 extending substantially along the oblique line 29 from the lower end of the first descending surface 33, It has a second horizontal surface 35 extending from the rear end of the inclined surface 34 to the wall side, and a second descending surface 36 descending from the rear end of the second horizontal surface 35. Although the air outlet 17 described with reference to FIG. 1 is not shown in FIG. 3 due to the cross-sectional position, the air outlet 17 is provided on the inclined surface 34.

Radiation heat rays are directly emitted from the first heater 15 into the room, and the reflected heat rays reflected by the reflection plate 31 are emitted into the room. The same applies to the second heater 16.
In addition to the radiant heat transfer, the surrounding air is heated by the first and second heaters 15 and 16. The air becomes less dense and rises (thermal draft phenomenon).
The hot air heated by the second heater 16 rises through the second horizontal surface 35, the inclined surface 34, and the first descending surface 33. The hot air heated by the first heater 15 rises through the first horizontal plane 32.

If the first heater 15 and the lower second heater 16 are arranged on the same vertical plane, part of the hot air generated by the second heater 16 is radiated forward without going to the first heater 15. Part of the hot air generated by the first heater 15 is radiated forward without going upward.
Therefore, the unity of hot air weakens. In this regard, in the present embodiment, the unity of the hot air is improved.

The gathered hot air rises from the tip of the first horizontal surface 32. A through hole 37 is provided between the sub case 26 and the front cover 27 near the tip of the first horizontal plane 32. In addition, the through hole 37 is provided almost directly below the overheat detecting element 21.
Hot air passes through the through hole 37 toward the overheat detecting element 21. The overheat detecting element 21 constantly monitors the temperature of the hot air and monitors for abnormal overheating. Since the hot air is collected, the detection accuracy is improved.

The overheat detecting element 21 is a temperature sensor and may be of any type as long as it can emit a temperature signal.
As a temperature sensor, a thermistor, a metal resistance temperature sensor, a thermocouple, or a thermostat, which is a kind of semiconductor sensor, can be adopted.
The thermistor is a semiconductor having a correlation between the electric resistance value and the temperature, and is, for example, a beryllium titanate-based semiconductor porcelain.

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

  On the other hand, the thermostat directly connects and disconnects a power supply circuit to the first and second heaters 15 and 16. That is, the thermostat has a bimetal element in which two or more different kinds of metals are attached to each other. The bimetal deforms due to the difference in thermal expansion. By utilizing this deformation for switching, the power supply circuit can be directly connected / disconnected, and by separately providing a circuit for detecting the power supply state to the first and second heaters 15 and 16, the thermostat operates and the power supply cutoff state Can be detected.

  However, the thermostat cannot measure multiple temperatures. It only stops the power supply in the overheated state. On the other hand, thermostats are inexpensive because the principle is simple and no special control is required. Therefore, a thermostat is preferably used as the overheat detecting element 21. In the case where a thermostat is employed, the thermostat is disposed at a position where the main power supply circuit supplied to the wall-mounted heater 10 is connected and disconnected, so that the first and second heaters 15 and 16 are connected. The power supply circuit may be connected and disconnected.

FIG. 4 is a sectional view taken along line 4-4 of FIG.
As shown in FIG. 4, a fan storage section 38 and wind guide tunnels 28 </ b> L and 28 </ b> R (L is a suffix indicating the left when viewed from the room, R is a suffix indicating the same) are formed at the upper part of the housing 24. . The blower mechanism 40 is housed in the fan housing 38. As the blower mechanism 40, a fan motor 41 and sirocco fans 42L and 42R rotated by the fan motor 41 are preferable. The sirocco fans 42L and 42R are fans provided with a large number of elongated blades in a cylinder. Since the fan is a rotating body, the center fan shafts 43L and 43R are supported by bearings 44L and 44R provided in the fan housing 38. The lower portion of the fan storage section 38 below the position corresponding to the sirocco fans 42L and 42R communicates with the back surface of the reflection plate 31 via an air passage (not shown).

  When the sirocco fans 42L and 42R are turned by the fan motor 41, the pressure inside the sirocco fans 42L and 42R becomes lower than the atmospheric pressure. Therefore, the indoor 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 to pressurize the air to a pressure higher than the atmospheric pressure, and the air is blown to the back surface of the reflection plate 31 through the air path, so that the air between the reflection plate 31 and the case body 25 is formed. The air is gently blown into the room from the gap and the air outlets 17, 17 to prevent overheating of the back surfaces of the first and second heaters 15, 16.

  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 wind guide tunnel 28 </ b> R on the right and near the net plate 14. That is, the room temperature sensor 46 is disposed at the entrance of the wind guide tunnel 28R. A room temperature sensor 46 constantly measures the temperature of the intake air as room temperature. The room temperature sensor 46 has a measurement temperature range in which an overheat state temperature Tm described later can be detected.

When the temperature detected by the room temperature sensor 46 is lower than the set temperature, for example, the outputs of the first and second heaters 15 and 16 are increased. Thus, rapid heating can be performed.
When the temperature detected by the room temperature sensor 46 is close to the set temperature, for example, the outputs of the first and second heaters 15 and 16 are reduced. This allows gentle heating.

Next, a mounting mode of the wall-mounted heater 10 will be described.
As shown in FIG. 5A, when viewed from the room, the wall-mounted heater 10 may be mounted in a form in which the right is raised and the left is lowered. Since the hot air is collected on the higher side, the hot air is discharged from the right net plate 14 through the right air outlet 17, the fan storage section 38, and the right air guide tunnel 28R. Since the room temperature sensor 46 is disposed in the right air guiding tunnel 28R, the temperature of the hot air is detected by the room temperature sensor 46.

  In addition, as shown in FIG. 5B, when viewed from the room, the wall-mounted heater 10 may be attached in a form in which the left is up and the right is down. Since the hot air is collected on the higher side, the hot air passes through the through hole 37 and is detected by the overheat detecting element 21.

  As shown in FIGS. 5A and 5B, the air guide tunnel 28R is provided with an entrance on one side (right side in this example) of the housing 24, and the room temperature sensor 46 is disposed there. In a normal state, the temperature of the air to be sucked can be reliably detected, and when the housing 24 is tilted so that one side thereof faces upward and becomes overheated, the hot air is guided in the wind guide tunnel 28R and the room temperature sensor is detected. The overheat can be detected at 46, and the overheat detection element 21 is provided on the other side of the housing 24 (the left side in this example). Thus, it is possible to arrange so as to be able to reliably detect the case where the overheating state is caused by tilting, so that the entrance of the wind guide tunnel 28R and the overheating detection element 21 can be arranged in the wall-mounted heater 10 in a well-balanced manner.

Next, the operation of the control unit 23 will be described with reference to FIG.
At step number 01 (hereinafter abbreviated as ST) in FIG. 6, it is checked whether or not a temperature corresponding to the overheated state of the heater (hereinafter, referred to as overheated state temperature Tm) is set in advance in the control unit. If not, Tm is set in the control unit (ST02).

  Next, the state of the thermostat is detected (ST03). A thermostat is a temperature dependent electrical switch, as described above. Normally, the switch is in a connected state, and power supply is maintained. The switch is turned off at the overheating state temperature Tm, and the power supply is interrupted. In order to know in which state the power supply is interrupted by the thermostat, it is checked (ST04). If executed, the control unit issues an abnormality alarm (ST05).

  When the power supply is not interrupted by the thermostat, the temperature Ts by the thermistor is read (ST06). In ST07, it is checked whether or not the temperature Ts is lower than the overheated state temperature Tm.

If the temperature Ts is lower than the overheat state temperature Tm, it is normal and the process proceeds to ST08. If the heating operation is continued, the process returns to ST03. Thereafter, ST03 to ST08 are repeated.
If NO in ST07, it is abnormal, and the control unit issues a power supply interruption command (ST09) and issues an abnormality alarm (ST10).

If the abnormal alarm is issued in ST05, it is suspected that one of the abnormal factors is an excessive inclination of the wall-mounted heater 10, and the thermostat side may be excessively raised.
When the abnormal alarm is issued in ST10, it is suspected that one of the abnormal factors is an excessive inclination of the wall-mounted heater 10, and the thermistor side may be excessively raised.
Therefore, it is possible to urge the user to correct the mounting posture of the wall-mounted heater 10 based on the abnormality alarm.

  In addition, if the blower mechanism 40 does not operate normally for some reason and the internal temperature of the wall-mounted heater 10 rises, even if the wall-mounted heater 10 is installed in an inclined posture, it is divided into right and left. Either the overheat detecting element 21 or the room temperature sensor 46 surely detects the rise in the internal temperature and stops the first and second heaters 15 and 16, so that safety can be improved.

  Note that the above control flow is an example, and that ST06 and 07 may be performed before ST03 and 04.

  When a thermostat as the overheat detecting element 21 is disposed at a position where the power supply circuit to be supplied to the wall-mounted heater 10 is connected or disconnected, the power supply to the control board 22 is stopped when the thermostat operates. Since the first and second heaters 15 and 16 are reliably stopped, safety can be improved.

  When the wall-mounted heater 10 is inclined beyond the permissible limit, an unexpected force (thrust load) is applied to the bearing 44L or 44R in FIG. 4, and the life of the bearing 44L or 44R is shortened. According to the present invention, when the oblique wall-mounted heater 10 is corrected horizontally and the shafts (FIG. 4, shafts 43L and 43R) are horizontal, only a radial load is applied to the bearings 44L and 44R, and the bearings 44L or 44R. Longer lifespan.

  The present invention skillfully utilizes the overheat detecting element 21 and the room temperature sensor 46 provided in the existing wall-mounted heater 10 so that an unsafe state can be prevented even if the wall-mounted heater 10 is inclined. I made it.

  Considering that a non-expert performs the installation, the inclination sensor should be incorporated into the wall-mounted heater 10, but this increases the manufacturing cost. In the present invention, the inclination can be detected without using the inclination sensor, so that an increase in the manufacturing cost of the wall-mounted heater 10 can be suppressed.

  The present invention is suitable for a wall-mounted heater including a horizontally long housing and a heater provided at a lower portion of the housing.

  DESCRIPTION OF SYMBOLS 10 ... Wall-mounted heater, 15, 16 ... Heater, 21 ... Overheat detection element, 23 ... Control part, 24 ... Housing, 28L, 28R ... Wind tunnel, 40 ... Blow mechanism, 46 ... Room temperature sensor.

Claims (4)

In a wall-mounted heater including a horizontally long housing attached to a wall and a heater provided at a lower portion of the housing,
As viewed from the room, an overheat detection element attached to one of the left and right sides of the housing and above the heater and stopping power supply to the heater when detecting an overheated state of the heater, On the other hand, a room temperature sensor which is mounted above the heater and detects a room temperature is provided, and a control unit which stops power supply to the heater when at least the room temperature sensor detects a temperature corresponding to an overheated state of the heater. and,
The overheat detecting element is a thermostat provided in a power supply circuit to the heater, and the room temperature sensor is a thermistor . In a wall-mounted heater including a horizontally long housing attached to a wall and a heater provided at a lower portion of the housing,
As viewed from the room, an overheat detection element attached to one of the left and right sides of the housing and above the heater and stopping power supply to the heater when detecting an overheated state of the heater, On the other hand, a room temperature sensor which is mounted above the heater and detects a room temperature is provided, and a control unit which stops power supply to the heater when at least the room temperature sensor detects a temperature corresponding to an overheated state of the heater. And
Wherein the housing is provided with a wind guide tunnel directing the air blowing mechanism and the indoor air to the blowing mechanism above said heater, said room temperature sensor you characterized in that provided in the inlet of the air guide tunnel wall Hanging type heater.   3. The wall-mounted heating according to claim 2, wherein the inlet is provided on one side surface of the housing, and the overheat detecting element is provided on the other side of the housing. 4. Machine. 4. The wall-mounted heater according to claim 2 , wherein the overheat detecting element is a thermostat provided in a power supply circuit to the heater, and the room temperature sensor is a thermistor. 5.

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