JP2017215122A - Wall type heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure capable of taking measures against inclination for a heater fitted on a wall.SOLUTION: As shown in Fig.(a), a wall type heater 10 may be fitted with the right raised and the left lowered when viewed from in a room. Hot air is blown from a right air blowout hole 17, a fan storage part 38, a right air guide tunnel 28R, and a right net plate 14. A temperature of the hot air is detected by a room temperature sensor 46. Or as shown in Fig.(b), the wall type heater 10 may be fitted with the left raised and the right lowered when viewed from in the room. The hot air passes through an air vent 37 and is detected by an overheating detecting element 21.EFFECT: Abnormality is detected in both the right inclination and right inclination states. Abnormality due to excessive inclination is detected by skillfully making use of the overheating detecting element and room temperature sensor that an ordinary heater comprises. Thus, no inclination sensor is needed and the heater is therefore suppressed from rising in cost.SELECTED DRAWING: Figure 5

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. 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) (the numbers in parentheses indicate the symbols described in Patent Document 1. The same applies to the following). (12, 12), a PTC heater (8), and an impeller (5).
Hot air heating is performed by a combination of the PTC heater (8) and the impeller (5), and radiant heating is performed by a combination of the carbon lamp heaters (11, 11) and the impeller (5).

According to Patent Document 1, complex heating is possible.
Incidentally, one of the full-scale heating facilities is a heat pump type air conditioner (so-called air conditioner) composed of an outdoor unit and an indoor unit. For the outdoor unit and the indoor unit, piping for reciprocating the heat medium is essential. Because the pipe penetrates the wall, an expert installs the indoor unit on the wall.

On the other hand, since the heater of patent document 1 does not require piping, a non-specialist may attach such a heater to the wall.
By the way, the horizontally long heater needs to be mounted horizontally so that the shafts of the carbon lamp heaters (11, 11) and the impeller (5) are horizontal (including substantially horizontal). However, as described above, when a non-professional attaches, the heater may be attached obliquely.

If it is installed at an angle exceeding 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 gathers to the right and the right side of the heater becomes hot locally due to the heat draft principle. When the left side is high, the left side of the heater becomes locally hot. A control board is built in any of the left, center, and right of the heater. However, since the control board is vulnerable to heat, if the heater is installed obliquely, the control board is affected depending on the direction of the inclination.

  Next, if the shaft of the impeller (5) is attached obliquely beyond the allowable limit, an unexpected force is applied to the bearing, the life of the bearing is shortened, and repair costs such as replacement of parts increase.

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

JP 2007-40634 A

  This invention makes it a subject to provide the structure which can take the countermeasure against inclination in the heater attached to a wall.

The invention according to claim 1 is a wall-mounted heater including a horizontally long casing attached to a wall and a heater provided at a lower portion of the casing.
An overheat detection element that is attached to one of the left and right sides of the casing and above the heater when viewed from the inside, and that stops power supply to the heater when an overheating state of the heater is detected; On the other hand, a room temperature sensor that is installed above the heater and detects the room temperature, and a control unit that stops power supply to the heater when the room temperature sensor detects a temperature corresponding to an overheated state of the heater. It is characterized by.

  In the invention according to claim 2, the casing includes a blower mechanism and a wind guide tunnel that guides indoor air to the blow mechanism above the heater, and a room temperature sensor is provided at an entrance of the wind guide tunnel. And

  The invention according to claim 3 is characterized in that the air guide tunnel is provided with an inlet on one side surface of the casing, and the overheat detecting element is provided on the other side of the casing.

  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.

  According to the first aspect of the present invention, in a horizontally long casing attached to the wall, an overheat detection element is provided on one of the left and right sides of the casing, 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 stops power supply when the room temperature sensor detects a temperature corresponding to the overheated state of the heater.

  When the casing is attached with an inclination and the overheat detection element side is higher than the room temperature sensor, the hot air generated by the heater collects in the higher overheat detection element. The overheat state is detected by the overheat detection element. Alternatively, when the room temperature sensor side is higher than the overheat detection element, the hot air generated by the heater collects in the higher room temperature sensor. The overheat state is detected by a room temperature sensor.

According to the present invention, both the left slope and the right slope are detected. Specifically, it is possible to detect an abnormality caused by an excessive inclination by skillfully using an overheat detection element and a room temperature sensor provided in a normal heater, and to stop it safely. Since an inclination sensor is unnecessary, the cost increase of a heater can be suppressed.
Therefore, according to Claim 1, the structure which can take a countermeasure against inclination is provided in the heater attached to a wall.

In the invention which concerns on Claim 2, it provided with the ventilation mechanism and the wind guide tunnel which guides indoor air to this ventilation mechanism in a housing | casing, and the room temperature sensor is provided in the entrance of the wind guide tunnel.
At the time of abnormality, hot air is guided to the room temperature sensor through the air guide tunnel, and the abnormal state is quickly detected.

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

  In the invention which concerns on Claim 4, an overheat detection element is a thermostat and a room temperature sensor is a thermistor. Thermostats and thermistors are both 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 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 room temperature sensor and an overheat detection element. It is a control flow figure of a control part.

  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.

The horizontal length means that the horizontal dimension on the horizontal side is larger than the vertical dimension on the vertical side. In this example, the horizontal dimension: vertical dimension is about 2: 1, but the ratio is not limited to this.
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 the control unit 23 of the present invention.

A sectional view taken along line 3-3 of FIG. 2 is shown in FIG.
As shown in FIG. 3, a casing 24 that is a main element of the wall-mounted heater 10 includes, for example, a case main body 25 arranged on the wall side, and a sub case attached to the upper side of 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 body 25 includes a half cylinder portion 25a that opens to the indoor side. The subcase 26 includes a half cylinder portion 26a that opens to 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 to be described later and a wind guide tunnel 28L.

The first heater 15 is disposed substantially below the half cylinder portions 25a and 26a. Assume a slanted line 29 that passes through the center of the first heater 15 and descends obliquely so as to approach the wall. The second heater 16 is disposed 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 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 31 having a W-shaped cross section is attached to the first and second heaters 15 and 16. The reflector 31 includes a first horizontal plane 32, a first falling 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 29 from the lower end of the first falling 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.

Radiant heat rays are directly irradiated into the room from the first heater 15, and reflected heat rays reflected by the reflector 31 are irradiated into the room. The same applies to the second heater 16.
Aside from radiant heat transfer, the surrounding air is warmed by the first and second heaters 15 and 16. Air rises with decreasing density (thermal draft phenomenon).
The hot air warmed by the second heater 16 rises through the second horizontal surface 35, the inclined surface 34 and the first falling 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, a part of the hot air generated by the second heater 16 is diffused forward without going to the first heater 15. Part of the hot air generated by the first heater 15 is dissipated forward without going upward.
Therefore, the hot air is weakened. In this respect, in the present embodiment, the hot air is better organized.

Collected hot air rises from the tip of the first horizontal plane 32. A through hole 37 is provided between the sub case 26 and the front cover 27 in the vicinity of 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 is directed to the overheat detecting element 21 through the through hole 37. The overheat detecting element 21 always monitors the temperature of hot air and monitors the presence or absence of abnormal overheating. Since hot air is collected, the detection accuracy is good.

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 used, 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.

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 reflecting plate 31 through 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 31 through the air path, and between the reflecting plate 31 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 28 </ b> R 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. As the room temperature sensor 46, a sensor having a measurement temperature range in which an overheat state temperature Tm described later can be detected is used.

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 lowered. This allows gentle heating.

Next, the mounting form of the wall-mounted heater 10 will be described.
As shown to Fig.5 (a), seeing from the room | chamber interior, the wall type heater 10 may be attached with the form where the right went up and the left fell. Since hot air collects in the higher direction, the hot air is discharged from the right mesh plate 14 through the right air outlet 17, the fan storage portion 38, and the right air guide tunnel 28 </ b> R. Since the room temperature sensor 46 is disposed in the right air guide tunnel 28R, the temperature of the hot air is detected by the room temperature sensor 46.

  Moreover, as shown in FIG.5 (b), seeing from the room | chamber interior, the wall-mounted heater 10 may be attached with the form which the left went up and the right fell. Since hot air collects in a higher direction, the hot air is detected by the overheat detecting element 21 through the through hole 37.

  As shown in FIGS. 5 (a) and 5 (b), the wind guide tunnel 28R is provided with an inlet on one side surface (right side in this example) of the casing 24, and the room temperature sensor 46 is disposed there. When normal, the temperature of the air to be taken in can be reliably detected, and when one side of the casing 24 is inclined so as to be overheated, the hot air is guided through the air guide tunnel 28R and the room temperature sensor The overheat can be detected at 46, and the overheat detection element 21 is provided on the other side of the casing 24 (on the left side in this example), so the overheat detection element 21 is on the other side of the casing 24. In this way, it can be arranged so that it can be reliably detected when it is overheated and the inlet of the wind tunnel 28R and the overheat detecting element 21 can be arranged in a well-balanced manner in the wall-mounted heater 10.

Next, the operation of the control unit 23 will be described with reference to FIG.
In step number (hereinafter abbreviated as ST) 01 in FIG. 6, it is checked whether or not a temperature corresponding to an overheated state of the heater (hereinafter referred to as an overheated state temperature Tm) is preset 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 an electrical switch that depends on temperature, as described above. Normally, the switch is in the connected state and power supply is maintained. The switch is turned off at the overheated temperature Tm, and the power supply is interrupted. In order to know which state is present, it is checked whether or not the power supply interruption by the thermostat has been executed (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 temperature Tm.

If the temperature Ts is lower than the overheated 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 the result is NO in ST07, it is abnormal and the control unit issues a power supply interruption command (ST09) and issues an abnormality alarm (ST10).

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

  In addition, when the air blowing mechanism 40 does not operate normally for some reason and the internal temperature of the wall-mounted heater 10 rises, the wall-mounted heater 10 is arranged separately on the left and right even if it is mounted in an inclined posture. The first and second heaters 15 and 16 are stopped by reliably detecting an increase in internal temperature by either the overheat detecting element 21 or the room temperature sensor 46, so that safety can be improved.

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

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

  When the wall-mounted heater 10 is tilted beyond the allowable 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) become horizontal, only a radial load is applied to the bearings 44L and 44R, and the bearings 44L or 44R. The lifetime of

  The present invention skillfully utilizes the overheat detecting element 21 and the room temperature sensor 46 that are always provided in the existing wall-mounted heater 10, and can prevent the wall-mounted heater 10 from being in an unsafe state even when the wall-mounted heater 10 is inclined. I made it.

  Considering that a non-professional performs the installation, an inclination sensor should be incorporated into the wall-mounted heater 10, but this increases the manufacturing cost. In the present invention, since the inclination can be detected without using an inclination sensor, 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 casing and a heater provided in a lower portion of the casing.

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

Claims (4)

In a wall-mounted heater having a horizontally long case attached to a wall and a heater provided at the bottom of the case,
An overheat detection element that is attached to one of the left and right sides of the casing and above the heater when viewed from the inside, and that stops power supply to the heater when an overheating state of the heater is detected; On the other hand, a room temperature sensor that is installed above the heater and detects the room temperature, and a control unit that stops power supply to the heater when the room temperature sensor detects a temperature corresponding to an overheated state of the heater. A wall-mounted heater characterized by   The said housing | casing is equipped with the ventilation mechanism which guides indoor air to this ventilation mechanism and this ventilation mechanism above the said heater, The said room temperature sensor is provided in the entrance of the said ventilation tunnel. The wall-mounted heater according to 1.   3. The wall-mounted heating according to claim 2, wherein the wind guide tunnel is provided with the entrance on one side surface of the casing, and the overheat detecting element is provided on the other side of the casing. Machine.   The wall-mounted heater according to any one of claims 1 to 3, 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.

Images