JP2018162889A - heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater capable of preventing incorrect detection of a pyroelectric human sensor.SOLUTION: A heater 10 includes heaters 12,12, a pyroelectric human sensor 22, and a control part 30 controlling the heating operation of the heaters 12,12 in accordance with the output result of the human sensor 22. The control part 30 cannot automatically restart the heating operation by keeping stoppage of the heating operation for a prescribed time after automatically stopping the heating operation of the heaters 12,12 in accordance with the output result of the human sensor 22. For instance, the control part 30 determines whether for instance, 10 seconds have passed or not after automatically stopping the heating operation, and the control part 30 can automatically restart the heating operation in accordance with the output result of the human sensor 22 after for instance, 10 seconds have passed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heater equipped with a sensor (specifically, a pyroelectric human sensor) that detects a temperature change.

  For example, Patent Document 1 discloses a heating device as a heater, and the heating device has a carbon lamp heater (radiation heater in a broad sense) and is typically attached to an upper wall surface of a bathroom. The heating device of Patent Document 1 further includes a PTC heater and a blower in addition to the carbon lamp heater, and can switch between hot air heating using the PTC heater and radiation heating using the carbon lamp heater. Moreover, the heating apparatus of patent document 1 further has a human sensor, and can switch from warm air heating to radiant heating when it is determined that there is a bather (resident detection) (paragraph [0019] of patent document 1). reference). After that, the heating device of Patent Document 1 causes the vacant timer to function during radiant heating and terminates radiant heating when no occupant detection occurs during operation of the vacant timer. Can return to wind heating.

  Next, for example, Patent Document 2 discloses an electric stove as a heater, and the electric stove includes a heating element (specifically, a stainless steel heater coated with a far-red ceramic paint) and a human sensor. It is a non-fixed type (movable type or portable type) electric stove that has a base and can be installed on an arbitrary floor. Moreover, the electric stove of Patent Document 2 can execute an energy-saving operation for reducing the output of the heating element when it is determined that there is no person around the electric stove (see paragraph [0019] of Patent Document 2). .

JP 2007-040634 A JP 2006-099057 A

  However, since the pyroelectric human sensor essentially detects a change in temperature, it only detects the movement of a person (heat), and a thermoelectric human sensor that detects the temperature itself. (For example, thermopile). In other words, since the pyroelectric human sensor detects a temperature change accompanying the movement of heat, it also reacts to the movement of heat of an object other than a person. Accordingly, the present inventors have found that the surrounding environment of the heater (specifically, for example, the wall surface to which the heater (wall-mounted heater) of Patent Document 1 is attached or the surrounding wall surface (or curtain), for example, Patent Document It was recognized that the pyroelectric human sensor could be erroneously detected depending on the temperature of the surrounding environment (thing) such as a curtain placed near the heater (non-fixed heater) No. 2). More specifically, when the heater automatically stops the heating operation due to the output of the pyroelectric human sensor caused by the person leaving the heater, the person is also away from the heater. Regardless, depending on the surrounding environment of the heater, the heater automatically restarts the heating operation based on erroneous detection of the pyroelectric human sensor.

  One object of the present invention is to provide a heater capable of preventing erroneous detection of a pyroelectric human sensor. Other objects of the present invention will become apparent to those skilled in the art by referring to the aspects and best embodiments exemplified below and the accompanying drawings.

  In the following, in order to easily understand the outline of the present invention, embodiments according to the present invention will be exemplified.

In the first aspect, the heater is
A heater,
A pyroelectric human sensor,
A control unit for controlling the heating operation of the heater according to the output result of the human sensor;
With
After the heating operation is automatically stopped according to the output result of the human sensor, the control unit cannot automatically restart the heating operation by keeping the heating operation stopped for a predetermined time. is there.

  In the first aspect, in order to prevent erroneous detection of the human sensor in consideration of the output characteristics of the pyroelectric human sensor, in other words, regardless of the output result of the human sensor, The heating operation cannot be automatically resumed for a predetermined time.

In a second aspect dependent on the first aspect,
The controller determines whether or not the predetermined time has elapsed after automatically stopping the heating operation,
After the predetermined time has elapsed, the control unit can automatically restart the heating operation according to the output result of the human sensor.

  In the second aspect, until the predetermined time elapses, the heater can cancel or invalidate the output result of the human sensor, and then when the human sensor detects the movement of heat, Heating operation can be automatically resumed.

  Those skilled in the art will readily understand that the illustrated embodiments according to the present invention can be further modified without departing from the spirit of the present invention.

It is a specific external view (front view) of the heater according to the present invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. It is a time chart which shows the example of an output of the pyroelectric type human sensitive sensor of FIG. It is a flowchart which shows the operation example of the heater of FIG.

  The best mode described below is used to easily understand the present invention. Accordingly, those skilled in the art should note that the present invention is not unduly limited by the embodiments described below.

  FIG. 1 is a specific external view (front view) of a heater according to the present invention. In the example of FIG. 1, the heater 10 is typically a wall-mounted heater, for example, a horizontally long heater used in a dressing room. The heater 10 in FIG. 1 is operated by, for example, a remote controller 11 that is detachably provided on the wall W. In addition, the heater 10 is not limited to the specific example of FIG. 1 (and FIG. 2), A non-fixed type heater may be sufficient, and the heater 10 is the remote control apparatus 11 (and FIG. 2 mentioned later, for example). The air blower mechanism 14 may not be provided, and the heater 10 may include an operation unit (for example, a power operation button) not shown in the main body.

  The heater 10 includes heaters 12 and 12, a pyroelectric human sensor 22, and a controller 30 that controls the heating operation of the heaters 12 and 12 according to the output result of the human sensor 22. . After automatically stopping the heating operation of the heaters 12 and 12 according to the output result of the human sensor 22, the control unit 30 cannot automatically resume the heating operation by keeping the heating operation stopped for a predetermined time. It is. For example, after automatically stopping the heating operation, the control unit 30 determines, for example, whether or not 10 seconds have elapsed. For example, after 10 seconds have elapsed, the control unit 30 detects the human sensor 22. The heating operation can be automatically restarted according to the output result of.

  In order to prevent erroneous detection of the human sensor 22 in consideration of the output characteristics of the pyroelectric human sensor 22, in other words, regardless of the output result of the human sensor 22, the heater 10 is operated for a predetermined time. The heating operation cannot be automatically resumed (for example, 10 seconds). Until the predetermined time elapses, the heater 10 can cancel or invalidate the output result of the human sensor 22, and then perform the heating operation when the human sensor 22 detects the movement of heat. It can be resumed automatically.

  2 is a cross-sectional view taken along line 2-2 of FIG. Referring also to FIG. 2, the case 20 of the heater 10 that is a wall-mounted heater is fixed to the wall W, and inside the case 20, for example, two heaters 12, 12 and these heaters 12, 12, 12 for controlling the reflector 12, the air blower mechanism 14 for blowing air toward the light reflector 13, the partition wall 15 for partitioning the front of the air blower mechanism 14, the heaters 12, 12 and the air blower mechanism 14. Control part 30 is stored.

  In FIG. 2, the case 20 includes a planar rear surface portion fixed to a wall W (wall surface), a planar ceiling surface portion extending from the upper end of the rear surface portion toward the room R, and a rear surface from the front end of the ceiling surface portion. A curved front surface portion extending to the lower end of the portion. The ceiling surface portion and the front surface portion are integrally formed, for example, and the ceiling surface portion extends from the wall W toward the room R with a gentle downward slope.

  The front part is constituted by a gently curved surface. An opening is formed in the lower portion of the front surface in the width direction, and the heaters 12 and 12 face the room R from this opening. The opening is covered with a mesh plate 17 for protecting the heaters 12 and 12. As the heaters 12 and 12 in FIG. 1, bar heaters extending horizontally are used. The heaters 12 and 12 are respectively offset up and down. The heaters 12 and 12 may be horizontally long planar heaters. Moreover, the number of the heaters 12 and 12 is arbitrary, for example, one may be sufficient and three or more may be sufficient.

  The reflection plate 13 is a metal plate having a substantially W shape in a side view (see FIG. 2), and reflects the heat rays emitted from the heaters 12 and 12 toward the room R. The reflection plate 13 has a vent hole through which air from the blower mechanism 14 passes through the central width direction. Thereby, it is suppressed that the heat | fever accumulates in the vicinity of the reflecting plate 13. FIG.

  2 includes a fan motor 14a located at the center in the width direction of the case 20, and left and right sirocco fans 14b disposed on the left and right sides of the fan motor 14a and driven by the fan motor 14a (only the right sirocco fan 14b). Is shown). The wind generated in the blower mechanism 14 mainly passes through the central opening of the reflector 13 and reaches the room R. The partition wall 15 descends substantially vertically from the lower surface of the ceiling surface portion, and extends to the edge of the opening in the front surface portion. The partition wall 15 is provided across the width direction inside the case 20.

  In the heater 10 of FIG. 1 (and FIG. 2), the control unit 30 includes a first storage unit 31, a first control board 32 stored in the first storage unit 31, and a second storage unit. 33, a second control board 34 accommodated in the second accommodation part 33, and a connection member 35 that connects the first control board 32 and the second control board 34. The first storage unit 31 includes a partition wall 15 and a storage unit cover 41 fixed to the partition wall 15. That is, the 1st accommodating part 31 utilizes the partition wall 15 which partitions off the front of the ventilation mechanism 14 (refer FIG. 2).

  The first control board 32 is a main board larger than the second control board 34, and controls the operations of the heaters 12, 12 and the blower mechanism 14, for example. The first control board 32 is fixed to the partition wall 15, for example. The second storage part 33 (see FIG. 1) is formed by superposing an upper storage part half 33b on a lower storage part half (not shown). The second control board 34 is, for example, a control board that can receive an electrical signal from the remote control device 11 (see FIG. 1). For example, the control board provided with the human sensor 22 is, for example, an upper housing half It is fixed by 33b.

  In addition, although the control part 30 equips the 1st control board 32 with the microcomputer (microcomputer) comprised, for example by CPU, ROM, RAM, etc., it is not limited to this. When the control unit 30 is a microcomputer, the ROM stores a program that causes the CPU to execute a predetermined operation (heating operation method), and the RAM can form a work area of the CPU. Further, the ROM can store data necessary for executing the operation set in the control unit 30 and the operation (including temperature change detection).

  For example, the heaters 12 and 12 of the heater 10 which is a wall-mounted heater installed on a wall W of a room R such as a dressing room or a toilet are preferably carbon heaters. For example, a carbon heater is contained in a quartz glass tube. Yes. The carbon heater has a relatively small heat capacity, has a quick warming property, and is typically a far-infrared carbon heater. In addition, since a carbon heater turns red by electricity supply, it may be called a carbon light heater by those skilled in the art. As an example, one heater 12 has a heating output of 600 watts, and the control unit 30 energizes heating operation at 1200 watts for energizing the two heaters 12 and 12 and energizing only one heater. It is possible to switch between heating operation at 600 watts. Moreover, when the person is away from the heater 10, the control unit 30 can automatically stop the heating operation.

  FIG. 3 is a time chart showing an output example of the pyroelectric human sensor 22 of FIG. For example, when the output of the human sensor 22 does not change or the output of the human sensor 22 does not cross the threshold for a certain time (for example, 1 minute) from time t0 to time t1, the control unit 30 performs heating at time t1. Stop operation automatically. In FIG. 1 (and FIG. 2), the area AR of the wall W is warmed by the heating operation, and the human sensor 22 reacts not only to human heat but also to heat transfer in the area AR. When the heating operation is stopped, for example, when the heated area AR is immediately cooled, the output of the human sensor 22 decreases, for example, at a time t1, or reaches a threshold value, and the output of the human sensor 22 It is erroneously detected that there is a person from the time t2 to the time t2 and, for example, from the time t3 to the time t4. In addition, although area | region AR demonstrated taking the installation wall of the lower part of the heater 10 as an example, it is not limited to this, It represents the object which exists in the detection area of the human sensor 22.

As described above, the present inventors can take into consideration the output characteristics of the pyroelectric human sensor 22 until the human sensor 22 is erroneously detected until the period from time t1 to time t4 elapses. The output result of the human sensor 22 is canceled during a period from time t1 to, for example, time t5 that is equal to or greater than that period.

As an example, the period from time t1 to time t4 for example, typically a 2 to 2.5 seconds, a period from time t 1 to time t5 example typically variations or safety Considering the rate, for example, 10 seconds.

  FIG. 4 is a flowchart showing an operation example of the heater 10 of FIG. When the power supply (main power supply) of the heater 10 is turned on, the heater 10 starts the heating operation according to the initial setting. Whether or not there is a movement of heat based on the output result of the pyroelectric human sensor 22 whether or not there is a person for a certain time (for example, 1 minute) during the heating operation. Is determined (step S1). When it is determined that there is no person, the heater 10 automatically stops the heating operation (step S2).

  After automatically stopping the heating operation, the heater 10 determines whether or not a predetermined time (for example, 10 seconds) for canceling the output result of the human sensor 22 has elapsed (step S3). For example, when 10 seconds elapses from when the heating operation is stopped, the output result of the human sensor 22 is validated, and whether or not there is a person while the heating operation is stopped is essentially a pyroelectric human sensor. Based on the output result of 22, it is determined whether or not there is a movement of heat (step S4). When it is determined that there is a person, the heater 10 can automatically resume the heating operation (step S5).

  The present invention is not limited to the above-described exemplary embodiments, and those skilled in the art will be able to easily modify the above-described exemplary embodiments to the extent included in the claims. .

DESCRIPTION OF SYMBOLS 10 ... Heating machine, 11 ... Remote control device, 12 ... Heater, 13 ... Reflector, 14 ... Blower mechanism, 14a ... Fan motor, 14b ... Sirocco fan, 15. ..Wall, 17 ... Mesh plate, 20 ... Case, 22 ... Pyroelectric human sensor, 30 ... Control unit, 31 ... First storage unit, 32 ... 1st control board, 33 ... 2nd storage part, 33b ... upper storage part half body, 34 ... 2nd control board, 35 ... connection member, 41 ... storage part cover AR ... region, R ... indoor, W ... wall (installation wall).

Claims (2)

A heater,
A pyroelectric human sensor,
A control unit for controlling the heating operation of the heater according to the output result of the human sensor;
With
After the heating operation is automatically stopped according to the output result of the human sensor, the control unit cannot automatically restart the heating operation by keeping the heating operation stopped for a predetermined time. A heater characterized by being. The controller determines whether or not the predetermined time has elapsed after automatically stopping the heating operation,
2. The heater according to claim 1, wherein the controller can automatically restart the heating operation in accordance with the output result of the human sensor after the predetermined time has elapsed.

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