JP2005222351A - Controller for planar heating element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller for a planar heating element applicable to various kinds of planar heating elements for tatami mat heating, floor heating, snow thawing and freeze proofing on a road/roof and the like and complying with multiple functions such as a function for starting/stopping heating of the planar heating element and a function for selecting a starting time and set temperature for controlling high efficient heating. <P>SOLUTION: This controller for the planar heating element includes a display part 2, an operation part 1 having a display changing switch SW1 switching respective modes for time, a heating time and a set temperature of the planar heating element 3, and the like, a high level switch SW2 for changing display and the set temperature of the planar heating element after mode change, a low level switch SW3, a decision switch SW4, an operation stop switch SW5 and the like, a first detection means 4 for detecting heating temperature of the planar heating element, a control means CPU, a timer means T, a second detection means 6 for detecting environmental temperature of the periphery, a switching means 7 turned ON/OFF according to the degree of the environmental temperature, and a power source circuit part 8. These components are arranged inside a housing 5. Heating temperature is controlled to a target temperature via the control means CPU by regulating electric excitation quantity according to the environmental temperature. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a controller device for a planar heating element, for example, heating tatami mats, floor heating, melting snow on roads and roofs, prevention of freezing, etc. It can be controlled easily and with high accuracy corresponding to multiple functions such as start and stop of heat generation of the heating element, start-up time and setting temperature, etc., handling operation is easy and there are few erroneous operations, and ambient temperature conditions Depending on the situation, high-efficiency heating with little energy loss can be performed.

  Conventionally, as heating elements used for heating, melting snow on roads and roofs, and preventing freezing, there are those using nichrome wires and carbon-based heating elements. These heating elements require a control circuit for controlling the temperature in order to maintain a predetermined temperature necessary for heating. A controller used to start or stop the heat generation of these heating elements is provided with a controller body that is pulled out of the heating element and can be gripped at an intermediate portion of a cord having an outlet at the tip. It was. In this controller, there was a controller in which the heating switch was turned on to start heating, the heating was turned off to end the heating, and the dial switch could be turned to set the heating temperature of the heating element ( For example, see Patent Document 1).

Recently, a planar heating element having a positive temperature coefficient characteristic that does not require a control circuit has been in the spotlight. The positive temperature coefficient (“Positive Temperature Coefficient”, hereinafter simply referred to as “PTC”) is a characteristic in which the electrical characteristics of the heating element increase when the temperature of the heating element rises to a predetermined temperature determined at the time of design. is there. The heating element rises to a predetermined temperature due to heat generated by energization, but has a so-called self-temperature control function in which the electrical resistance increases due to the PTC characteristic and the generated current is maintained at the predetermined temperature by regulating the flowing current. I had it. There has been a heating tatami using a planar heating element that exhibits this PTC characteristic (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 11-241482 Japanese Utility Model Publication No. 61-126594

  However, the conventional controller described in Patent Document 1 is suitable for heating a nichrome wire or a carbon-based heating element as a heating element, and energizes the heating element by rotating the dial switch to generate heat. It was only used to set the heat generation temperature by starting the heat treatment, terminating the heat generation by turning off the power, or setting the resistance variably.

  For this reason, in order to switch the set temperature depending on the environment in which the heating element is used, the dial switch has to be turned each time. Therefore, there is a troublesome operation. In addition, since heating is performed while ignoring the surrounding environmental temperature, inconveniences such as being too hot or too cold are caused, so that comfortable heating cannot be performed. Moreover, energy efficiency is low for heating, and a great amount of power is required. In addition, the heating element overheats, causing inconveniences such as burns and fire. Moreover, a control circuit for controlling the temperature has been complicated in order to maintain a predetermined temperature required for heating.

  In addition, the conventional planar heating element that exhibits the PTC characteristics as described in Patent Document 2 has an advantage that a control circuit for controlling the heating temperature is not necessary, but on the other hand, It took a long time to get up.

  In addition, the amount of heat is rapidly deprived due to the surrounding environment in which the planar heating element is used, for example, when heat dissipation from the heated body is large, or due to an external factor in the heated body at a predetermined temperature. When the temperature drops, the calorific value becomes insufficient, and it is necessary to maintain the predetermined temperature state or to quickly return to the predetermined temperature. It is rare.

  The present invention solves the above-mentioned conventional drawbacks, and can be used for various sheet heating elements such as heating tatami mats, floor heating, melting snow on roads and roofs, and preventing freezing. It can be controlled easily and with high accuracy in response to various functions such as the start and stop of body heat, start-up time, selection of set temperature, etc., handling operation is easy, there are few erroneous operations, and depending on the ambient temperature situation Convenient surface heating element controller device that can control the heat generation temperature with high efficiency with less waste of power consumption and also contributes to shortening the startup time of the sheet heating element. The purpose is to provide.

  The present invention has been made in view of the above problems, and the invention according to claim 1 is directed to a display unit and a desired press in each mode such as time, heating time of a planar heating element, set temperature, and the like on the display unit. Change and set the display changeover switch to display for each operation and the time display and set temperature of the heat generation time of the planar heating element for each pressing operation after switching the mode by pressing the display changeover switch High-level switch and low-level switch, a decision switch that determines the suitability of the operation procedure of the various switches, an operation unit that can press the operation stop switch that stops operation, and the heat generation temperature of the sheet heating element are detected. A substantially box-shaped housing having a first detecting means connected thereto, a control means CPU for storing and calculating information, wherein the first detecting means is connected in the housing; and the control means Timer means connected to the PU and capable of setting the heat generation time of the sheet heating element, second detection means for detecting the ambient temperature around the sheet heating element, and the environment detected by the second detection means A switching means for turning on and off according to the temperature level and a power supply circuit section for energizing the planar heating element by turning on and off the switching means are provided, and the planar heating element from the power supply circuit section is provided. The means is characterized in that the heating temperature of the planar heating element is controlled to the target temperature through the control means CPU by adjusting the energization amount of the sheet heating according to the environmental temperature.

  According to a second aspect of the present invention, in the first aspect, the switching means is turned on by the control means CPU based on detection information of the first detection means and / or the second detection means. , OFF is controlled, so that the feature is adopted.

  According to a third aspect of the present invention, in the first or second aspect, the switching means controls the control means when the detection temperature of the first detection means with respect to the planar heating element approaches the set temperature. A means is adopted in which the energization time per unit time required for energization by the CPU is controlled step by step with different levels for each temperature rise temperature approaching the set temperature.

  According to a fourth aspect of the present invention, in the first, second, and third aspects, the switching unit is configured to perform the operation based on information on the ambient temperature detected by the second detection unit. The means of controlling the energization amount supplied from the power supply circuit section by the control means CPU was adopted.

  According to a fifth aspect of the present invention, in the first, second, third, and fourth aspects, the switching means is an SSR that is ON / OFF controlled by the control means CPU. We adopted the means of characterizing this.

  The invention according to claim 6 of the present invention is the operation selection of the display unit according to claim 1, claim 2, claim 3, claim 4 or claim 5, wherein the mode is switched by the display changeover switch. A means was adopted in which the planar heating element was provided with a function of rapidly increasing the rise of heat generation by operating the decision switch after displaying on the display area.

  The invention according to claim 7 of the present invention is the first, second, third, fourth, fifth, or sixth aspect, wherein the first detecting means comprises a plurality of desired pairs. A means of being a thermocouple was adopted.

  The invention according to claim 8 of the present invention is the first, second, third, fourth, fifth, sixth, and seventh aspects, wherein the second detecting means includes: Any means such as a thermosensitive element such as a thermistor, a thermocouple, a thermometer, or the like is used.

  The invention according to claim 9 of the present invention is the display unit according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 7, claim 8, and claim 8. Adopted a means characterized by being a display formed of organic EL.

  The controller of the sheet heating element of the present invention can be used for various sheet heating elements such as heating tatami mats, floor heating, melting snow on roads and roofs, and preventing freezing. It can be controlled easily and with high accuracy in response to various functions such as the start and stop of body heat, start-up time, selection of set temperature, etc., handling operation is easy, there are few erroneous operations, and depending on the ambient temperature situation Convenient for high-efficiency heating with low energy loss, etc.Furthermore, the planar heating element is convenient because of its versatility, such as contributing to shortening the startup time. Can measure.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a wiring block diagram showing Embodiment 1 of a control device for a planar heating element of the present invention, FIG. 2 is a front view of the same appearance, and FIG. 3 is a block diagram showing an operation for setting the ON time of the planar heating element. 4 is a block diagram showing the setting operation of the OFF time, FIG. 5 is a block diagram showing the temperature setting operation of the planar heating element, FIG. 6 is a block diagram showing the rapid start-up operation of the planar heating element, and FIG. FIG. 8 is an explanatory diagram showing level 0 of the level display corresponding to the energization amount with respect to the set temperature of the planar heating element, FIG. 8 is also an explanatory diagram showing level 1, and FIG. 9 is an explanatory diagram showing level 2. 10 is an explanatory diagram showing the level 3, and FIG. 11 is an explanatory diagram showing the level 4.

  As shown in FIGS. 1 and 2, the controller device C according to the first embodiment has a display unit 2 on the front, a time on the display unit 2, a heating time of the planar heating element 3, a set temperature, and other modes. A display changeover switch SW1 that is switched and displayed for each desired pressing operation, and a time display of the heat generation time of the planar heating element 3 and a set temperature after a mode change by pressing the display changeover switch SW1 at every predetermined pressing operation. The operation unit 1 includes a high level switch SW2 and a low level switch SW3 that are changed to be set, a determination switch SW4 that determines suitability of the operation procedure of the various switches, an operation stop switch SW5 that stops operation, and the like. A substantially box-shaped housing 5 that is connected so as to detect the heat generation temperature of the planar heating element 3, and the first detection means 4 is in contact with the housing 5. The control means CPU for storing and calculating information, the timer means T connected to the control means CPU and capable of setting the heat generation time of the planar heating element 3, and the surrounding environment where the planar heating element 3 is laid A second detecting means 6 for detecting the temperature; a switching means 7 for turning on and off according to the environmental temperature detected by the second detecting means 6; and the planar heat generation by turning the switching means 7 on and off. A power supply circuit unit 8 for energizing the body 3 and adjusting the amount of power supplied from the power supply circuit unit 8 to the planar heating element 3 according to the environmental temperature, thereby increasing the heating temperature of the planar heating element 3. Control is made to a target temperature through the control means CPU.

  The display unit 2 is formed by, for example, an organic EL display. The reason why the display unit 2 is formed by the organic EL display is that the display unit 2 is displayed not only on the front surface but also displayed in each display area described later on the display unit 2 even at a low temperature (−50 ° C.) when viewed from an oblique direction. This is because the contents can be clearly and easily visually confirmed.

  Further, when the display unit 2 is not used, the organic EL display is turned off to save energy.

  Further, as shown in FIG. 2, the display unit 2 includes a time display area 2A for displaying the time and the heat generation time of the sheet heating element 3 by the action of the timer T, and the heat generation of the sheet heating element 3. Setting temperature display area 2B for setting temperature, ambient temperature detected by the second detection means 6, for example, indoor temperature display area 2C for displaying room temperature, and pressing operation of the display changeover switch SW1 "ON setting", "OFF setting", and the operation selection to repeatedly flash and display the display of "rapid setting" that starts up by rapidly generating heat from the start of energization to the sheet heating element 3 to the desired temperature required for heating etc. Display area 2D and current setting display area for displaying the current operating setting among “ON setting”, “OFF setting”, and “rapid setting” selected in this operation selection display area 2D 2E and set temperature table When the heating temperature of the planar heating element 3 displayed in the area 2B rises and approaches the set temperature, the unit time t, for example, 1 second is divided into desired sections, and energization is repeatedly turned on and off. A level display area 2F for saving power while preventing waste of power consumption, a level character display area 2G provided near the level display area 2F and displaying “level” characters; The display switching is divided into a power amount display area 2H in which the “power consumption” is displayed in units of W, an integrated power display area 2I in which the “total power consumption” is displayed in units of kwh, etc. By pressing each switch such as the switch SW1 in a predetermined procedure, the mode is switched and the setting contents are displayed.

  Each display content such as “ON setting”, “OFF setting”, “rapid setting” and the like displayed blinking in the operation selection display area 2D is set to a predetermined time, for example, 20 seconds by pressing the display changeover switch SW1. If the next setting content is not selected by the display changeover switch SW1, the blinking is stopped and the setting content is displayed as it is.

  In addition, the level display area 2F performs level display corresponding to the energization amount with respect to the set temperature of the planar heating element 3 that performs tatami mat heating and floor heating, and prevents power consumption and saves power. It is a guide.

  For example, if the set temperature of heat generation of the sheet heating element 3 is set to 37 ° C., for example, five levels of level 0, level 1, level 2, level 3, and level 4 with different energization amounts per unit time of 1 second. As shown in FIG. 7, the level 0 is all OFF for 1 second at 38 ° C. which is 1 ° C. higher than the set temperature of 37 ° C., and the energization to the planar heating element 3 is refrained from being set. The heating temperature of the sheet heating element 3 is prevented from rising above the temperature, so that power consumption is prevented and power is saved. Next, in level 1, when the set temperature of the planar heating element 3 approaches the target temperature of 37 ° C., it is turned on as shown in FIG. 8 and energized for 0.6 seconds instead of all of one second. Then, it is turned off for 0.4 seconds thereafter, the current supply is cut off, and the current supply to the on-surface heating element 3 is refrained as much as possible. Further, as shown in FIG. 9, in level 2, when it is 36 ° C., which is 1 ° C. lower than the set temperature of 37 ° C., it is turned on and energization is performed for 0.7 second of 1 second, and thereafter 0 .Turns off for 3 seconds to cut off power. Further, level 3 as shown in FIG. 10 is at 35 ° C., which is 2 ° C. lower than the set temperature 37 ° C., and is turned on for 0.8 second in one second, and energization is applied to the planar heating element 3. As a result, the energization time is longer by 0.1 seconds than level 2, and thereafter, the power is turned off and the energization is cut off for 0.2 seconds. Further, as shown in FIG. 11, level 4 is a case where the temperature is 34 ° C., which is 3 ° C. lower than the set temperature 37 ° C., and the sheet heating element 3 is energized for 0.9 seconds to be level 3 The energization time is longer than 0.1 second, and then the power is turned off and the energization is cut off for 0.1 second.

  When the heating temperature of the sheet heating element 3 is 33 ° C., which is considerably lower than the set temperature of 37 ° C., the sheet heating element 3 is turned on and energized for one second, and the sheet heating element 3 is sufficiently heated. .

  Thus, according to 5 levels of level 0 to level 5, 1 second of unit time is divided into desired sections, and energization of the planar heating element 3 is efficiently performed by repeating energization ON and OFF, thereby reducing power consumption. This saves energy and saves energy.

  In addition, when the mode is switched by the pressing operation of the display changeover switch SW1, the current power consumption display area 2H displays the current “power consumption” in W units. The number of display digits can be, for example, 8 digits, but the number of digits can be increased or decreased.

  The integrated power display area 2I is switched in mode by a pressing operation of the display changeover switch SW1, and the “integrated power amount” up to the present is displayed in units of kwh. The number of display digits can be, for example, seven digits, but the number of digits can be increased or decreased, and the minimum display unit is displayed at 0.1 kwh. Also, the integration start time starts when the ON setting is made. The reset operation is performed by pressing the determination switch SW4.

  The time displayed in the time display area 2A and the heat generation time of the sheet heating element 3 are set by first pressing the display changeover switch SW1 to blink “ON setting” in the operation selection display area 2D. indicate. Next, when the low level switch SW3 is pressed, the time value is displayed in the time display area 2A up, and when the high level switch SW4 is pressed, the minute value is displayed in the time display area 2A by 1 minute. Go up and appear. At this time, for example, the time value by pressing the low level switch SW3 is incremented by 1 hour from “1” → “2”... “23” → “00”, and the high level switch SW2 is pressed. The fractional value resulting from the operation is displayed as “1” → “2”... “59” → “00”. Then, in the time display area 2A, the time and the start time of the heat generation time of the planar heating element 3 are set and displayed, and then the determination switch SW4 is pressed to determine the suitability of the operation procedures of the various switches. Then, the setting operation of the heat generation start time (ON time) of the planar heating element 3 is finished.

  In the setting of the heat generation end time of the sheet heating element 3, first, the display changeover switch SW1 is pressed to display “OFF setting” in a blinking manner in the operation selection display area 2D as in the above-described operation.

  Next, similarly, the low level switch SW3 is pressed to display the time value in the time display area 2A, and the high level switch SW4 is pressed to display the fractional value in the time display area 2A. Finally, by pressing the decision switch SW4, the suitability of the operation procedures of the various switches is decided, and the setting operation of the heat generation end time (OFF time) of the planar heating element 3 is finished.

  The setting operation for setting the set temperature of the sheet heating element 3 in the set temperature display area 2B is performed by pressing the display changeover switch SW1 and switching the mode. As a standard temperature of the planar heating element 3, for example, 30 ° C. is blinked.

  Next, press the low level switch SW3 to decrease the temperature by 1 ° C with reference to the standard temperature, and press the high level switch SW2 to increase the temperature by 1 ° C with reference to the standard temperature. Then, display is performed on the set temperature display area 2B. Thereafter, by pressing the decision switch SW4, the suitability of the operation procedure of the various switches is decided, and the temperature setting operation for the set temperature of the planar heating element is performed.

  In order to quickly start up the sheet heating element 3 to a desired temperature, first, the display changeover switch SW1 is pressed to switch the mode, and “rapid setting” is displayed in the operation selection display area 2D. The determination switch SW4 is pressed to determine the suitability of the switch operation procedure, and a rapid start-up operation for the heat generation of the planar heating element 3 is performed.

  In order to perform a correction operation when the time displayed in the time display area 2A of the display unit 2 is delayed or advanced, first, the display changeover switch SW1 is pressed to change the mode to “time”. When switching, the number indicating the time flashes. Next, by performing the same operation as the above-mentioned “ON setting” and “OFF setting”, for example, by pressing the low level switch SW3, the time numerical value is changed from “1” → “2”... “23” → Correcting the delay and advance by incrementing “00” by 1 hour, and pressing the high level switch SW2, the fractional value becomes “1” → “2” · “59” → “00” Up to correct delays and advancements. Then, by pressing the decision switch SW4, the suitability of the operation procedure of the various switches is determined, the new time after correction is displayed in the time display area 2A, and the correction operation is finished.

  When performing tatami heating, the room temperature is detected by the second detection means 6, and the signal is input to the control means CPU, and the detected temperature is displayed on the room temperature display area 2C in units of 1 ° C. Yes. The second detection means 6 may be any one of a sensitivity element, a thermocouple, a thermometer, and the like.

Examples of the organic EL material used for display of the display unit 2 include tris (8-hydroxyquinolinolato) aluminum, poly-phenylene vinylene (PPV), polyethylene terephthalate (PET), poly-3-alkylthiophene ( PAT), poly-9,9 diarylfluorene (PDAF), polymethine dyes, polycyclic aromatic ring compounds such as anthracene, oxadiazole, heteroaromatic ring compounds, porphyrin molecules, xanthine dyes, stilbene compounds, Furthermore various metal complexes, metal compounds, and the like, typically, for example DPVBi, PESB, EM2, Spiro- TAD, Zn (BOX) 2, which emits blue as Spiro-8φ, Bebq _2, Alq _2, Tb (acac) ₃ which emits green light as such _{Rubrene, Eu (TTFA) 3 Phen} , DCM, BPPC , etc. has a low molecular light-emitting material exhibiting red light emission, also PPV, ROPPV, MEHPPV, CNPPV, PAT, PEDOT, PCHT, POPT, PDAF, ROPPP, F-PPP, Examples thereof include poly-phenylene vinylene EL conductive polymers, polythiophene EL polymer materials, polyfluorene EL polymer materials, polysilane polymer materials, and silicon polymer materials.

  The planar heating element 3 is made by mixing a small amount of metal oxide or carbide in addition to a conductive material made of graphite and carbon black in a synthetic resin dispersion medium made of a fluorine-based resin, and an extruder (shown in the figure). Z)). The planar heating element 3 is rapidly raised to a target temperature by operating the switch of the operation unit 1, for example, the rise time until reaching a desired heat generation temperature required for heating, for example, tatami heating is short, and the quick response is good. In addition to its excellent electrical characteristics, it has excellent cold resistance, chemical resistance, abrasion resistance, impact resistance, and mechanical characteristics such as high bondability to carbon black as a conductive material.

  The first detection means 4 uses, for example, a thermocouple, detects heat generation of the sheet heating element 3, and the signal is input to the control means CPU via the amplifier A1.

  As the second detection means 6, for example, any one of a temperature sensitive element such as a thermistor, a thermocouple, a thermometer or the like is used, and the signal is input to the control means CPU via the amplifier A2.

  The housing 5 is substantially box-shaped as shown in the figure, and the housing 5 can be designed to be thin, for example, with a synthetic resin plastic, and can be made compact. When the housing 5 is used for heating tatami mats or floor heating, the controller device C of the planar heating element 3 of the first embodiment uses the housing 5 on the wall of the room with screws and adhesives. It can be used by being attached or attached to the floor surface, but as described below, the surface heating element 3 can be laid on the road as described below to melt snow on the road or prevent freezing. When used as load heating for the purpose, the controller device C of the first embodiment is used by being installed on the road shoulder. Furthermore, when the sheet heating element 3 is laid on the roof to melt snow on the roof or to be used as a roof snow melting device for preventing freezing, the housing 5 is attached to an appropriate place indoors, for example. It can be used in common with the application of the planar heating element 3.

The switching means 7 is turned on and off by a drive circuit 9 controlled by the control means CPU corresponding to the environmental temperature detected by the second detection means 6, and the switching means 7 is turned on and off by the drive circuit 9. The heating temperature of the sheet heating element 3 is controlled to the target temperature by adjusting the amount of current supplied from the power supply circuit unit 8 to the sheet heating element 3 according to the environmental temperature. The switching means 7 is, for example, an SSR (Solid State).
(Relay) is used, but an electromagnetic relay or a semiconductor element may also be used as long as it exhibits an ON / OFF function.

  In FIG. 1, A3 is an amplifier, and L is an operation display lamp.

  The planar heating element controller C according to the first embodiment has the above-described configuration, and a usage example will be described together with the following operations.

  That is, when performing tatami floor heating or floor heating, the sheet heating element 3 is caused to generate heat by pressing various switches provided in the operation unit 1 according to a predetermined procedure for each application.

  Hereinafter, the switching operation and the switching operation of various modes will be sequentially described.

<Setting operation of heat generation start (ON) time>
In order to set the time displayed in the time display area 2A and the heat generation time of the sheet heating element 3, the operation selection is performed by first pressing the display changeover switch SW1 as shown in FIG. “ON setting” is displayed blinking on the display area 2D. Next, when the low level switch SW3 is pressed, the time value is displayed in the time display area 2A, and when the high level switch SW2 is pressed, the minute value is increased by 1 minute in the time display area 2A. Then go on the display. At this time, for example, the numerical value of time by pressing the low level switch SW3 is incremented by 1 hour from “1” → “2”... “23” → “00”, and the high level switch SW2 is pressed. As a result, the fractional value is increased as “1” → “2”... “59” → “00”. Then, in the time display area 2A, the time and the start time of the heat generation time of the planar heating element 3 are set and displayed, and then the determination switch SW4 is pressed to determine the suitability of the operation procedures of the various switches. Then, the setting operation of the heat generation start time (ON time) of the planar heating element 3 is finished.

<Operation for setting the heat generation end (OFF) time>
Also, in order to set the heat generation end time of the sheet heating element 3, as shown in FIG. 4, first, the display changeover switch SW1 is pressed to turn off the operation selection display area 2D as shown in FIG. “Setting” flashes.

  Next, by similarly pressing the low level switch SW3, the time value is displayed in the time display area 2A, and the high level switch SW2 is pressed to display the fractional value in the time display area 2A. Finally, by pressing the decision switch SW4, the suitability of the operation procedures of the various switches is decided, and the setting operation of the heat generation end time (OFF time) of the planar heating element 3 is finished.

<Temperature heating element temperature setting operation>
Further, the operation of setting the set temperature of the sheet heating element 3 in the set temperature display area 2B is performed by pressing the display changeover switch SW1 and switching the mode as shown in FIG. In 2B, for example, 30 ° C. is blinked as the standard heat generation temperature of the sheet heating element 3.

  Next, by pressing the low level switch SW3, the temperature is decreased by 1 ° C. with reference to the standard heat generation temperature, and by pressing the high level switch SW2, the set temperature is increased by 1 ° C. with reference to the standard heat generation temperature. Is displayed on the set temperature display area 2B.

  Thereafter, the determination switch SW4 is pressed to determine the suitability of the operation procedure of the various switches, and the temperature setting operation for the heat generation of the planar heating element 3 is terminated.

  Based on the switch operation as described above, for example, a case where a 12 tatami mat hall is tatami-heated as a capacity of 20 people is used from 10:00 am to 13:30 using the controller device C of the first embodiment. In order to perform heating by heating the planar heating element 3 under the assumption of the case, when the display changeover switch SW1 is first pressed as shown in FIG. 3, “ON setting” blinks in the operation selection display area 2D. When the low level switch SW3 is pressed, the time display area 2A is displayed with an increased time value, and when the high level switch SW2 is pressed, the minute value is displayed one minute at a time. Thus, the time and the start time of the heating time of the sheet heating element 3 are set in the time display area 2A, and the heating start time (ON time) of the sheet heating element 3 is set to 9: It is set to 0.

  Further, as shown in FIG. 4, the display changeover switch SW1 is pressed, “OFF setting” is blinked in the operation selection display area 2D, and the time display area 2A is pressed by pressing the low level switch SW3 and the high level switch SW2. Then, the end time of the sheet heating element 3 and the end time of the sheet heating element 3 are set, and the end switch (OFF time) of the sheet heating element 3 is set to 13:30 by pressing the decision switch SW4.

  Thereafter, as shown in FIG. 5, by pressing the display changeover switch SW1 and switching the mode, for example, 30 ° C. is flashed and displayed on the set temperature display area 2B as the standard heating temperature of the planar heating element 3, and the low level. By pressing the switch SW3 and the high-level switch SW2 individually, 37 ° C. is displayed as the set temperature in the set temperature display area 2B, and then the decision switch SW4 is pressed to operate the planar heating element 3 The set temperature is set to 37 ° C., for example, and the sheet heating element 3 generates heat to perform tatami heating.

<Quick start-up operation of the planar heating element 3>
In order to perform the quick start-up operation of the planar heating element 3, first, as shown in FIG. 6, the display changeover switch SW1 is pressed to switch the mode, and “rapid setting” is performed in the operation selection display area 2D. Is displayed. When the appropriateness of the switch operation procedure is determined by pressing the determination switch SW4, a small amount of the conductive material made of graphite and carbon black is contained in the synthetic resin dispersion medium made of fluorine resin as described above. The sheet heating element 3 formed by kneading a metal oxide or carbide has its heating temperature rapidly raised to about 55 ° C. by a control command from the control means CPU, and is kept at that heating temperature for about 5 minutes. It is possible to perform a quick start-up operation for the heat generation of the planar heating element 3 and kill the mites by sufficient heat generation from the planar heating element 3.

  The planar heating element 3 according to the first embodiment is formed by kneading a small amount of metal oxide or carbide in addition to a conductive material made of graphite and carbon black in a synthetic resin dispersion medium made of a fluorine resin. Therefore, as mentioned above, in addition to having good electrical characteristics and quick response, it has good cold resistance, chemical resistance, wear resistance, impact resistance, and has a strong bond to carbon black as a conductive material. Excellent characteristics.

  Further, as described above, when the set heat generation temperature of the planar heating element 3 is set to 37 ° C. and the heating is performed, the heating temperature of the planar heating element 3 is detected by the first detection provided in the planar heating element 3. It is detected by a thermocouple as means 4. At this time, the room temperature is displayed on the room temperature display area 2C of the display unit 2 in units of 1 ° C.

  When the detection temperature for the heat generation of the sheet heating element 3 of the thermocouple approaches the set temperature of the sheet heating element 3, for example, 37 ° C., the drive circuit 9 controlled by the control means CPU performs SSR as the switching means 7. ON or OFF, when the detected temperature of the first detection unit 4 with respect to the sheet heating element 3 approaches the “set temperature”, the control unit CPU sets an energization time of, for example, 1 second per unit time t required for energization The energization amount from the power supply circuit is controlled by changing the level by 1 ° C. step by step for each temperature rise temperature approaching the temperature to prevent waste of the energization amount and to save power.

  That is, at level 0, as shown in FIG. 7, when the temperature is 38 ° C., which is 1 ° C. higher than the set temperature of the sheet heating element 3, all of one second is OFF, and the sheet heating element 3 is not energized. It is done. Next, as shown in FIG. 8, level 1 is turned on when it approaches the set temperature of 37 ° C. and is energized for 0.6 seconds instead of all for 1 second, and then turned off for 0.4 seconds. The energization is interrupted and the energization of the on-surface heating element 3 is minimized. Further, as shown in FIG. 9, at level 2, when it is 36 ° C., which is 1 ° C. lower than the set temperature of 37 ° C., it is turned ON and energized for 0.7 seconds, and then turned OFF and becomes 0.3 The power is cut off for 2 seconds. Further, level 3 as shown in FIG. 10 is at 35 ° C., which is 2 ° C. lower than the set temperature 37 ° C., and is turned on when the sheet heating element 3 is energized for 0.8 seconds. The energization time is longer than 0.1 seconds for 0.1 seconds, and then the power is turned off to interrupt the energization for 0.2 seconds. Further, level 4 as shown in FIG. 11 is a case where the temperature is 34 ° C., which is 3 ° C. lower than the set temperature 37 ° C., and is turned on when the sheet heating element 3 is energized for 0.9 seconds. The energization time is longer than 0.1 for 0.1 second, and then turned off and the energization is cut off for 0.1 second.

  When the heating temperature of the sheet heating element 3 is 33 ° C., which is considerably lower than the set temperature 37 ° C., the sheet heating element 3 is turned on and energized for one second, and the sheet heating element 3 generates heat.

  In this way, waste of power consumption can be prevented by dividing energization of the sheet heating element 3 by repeating energization ON and OFF by dividing 1 second into desired sections in accordance with 5 levels of level 0 to level 5. Power saving is performed.

  The level display area 2F corresponds to five levels of level 0, level 1, level 2, level 3, and level 4 for one second required to energize the planar heating element 3 corresponding to the set temperature. Display is made.

  Moreover, since the ambient temperature around which the tatami heating having the sheet heating element 3 is laid is detected by the second detection means 6 including a thermosensitive element such as a thermistor, a thermocouple, a thermometer, etc. When the signal is sent to the control means CPU, the SSR as the switching means 7 connected to the control means CPU is sent from the control means CPU according to the difference in ambient temperature detected by the second detection means 6. Since the switching means 7 is turned on and off by the control, the energization amount from the power supply circuit unit 8 to the sheet heating element 3 is adjusted according to the environmental temperature by turning the switching means 7 on and off, and the heating temperature of the sheet heating element 3 is adjusted. The target temperature can be controlled.

  Accordingly, even in winter or in other than winter, the sheet heating element 3 is used in a cold environment, depending on the surrounding environment in which heat dissipation from the heating tatami is large, or the heating tatami having a predetermined temperature is due to external factors. When the ambient temperature differs from day to day when performing tatami mat heating or floor heating when the amount of heat is rapidly deprived and the temperature needs to drop, the calorific value is insufficient and the temperature is maintained at a predetermined temperature. Or, it is possible to quickly return to a predetermined temperature, and to perform power-saving tatami mat heating that is fine in consideration of the ambient temperature and prevents waste of power consumption.

<Correction of time delay and advance>
Further, when the time displayed in the time display area 2A of the display unit 2 is delayed or advanced, the correction operation is first performed by pressing the display changeover switch SW1 to switch the mode to “time”. A number indicating blinking is displayed. Next, for example, by pressing the low level switch SW3, which is the same operation as the above-mentioned “ON setting” and “OFF setting”, the time value is changed from “1” → “2”... “23” → “00”. The delay or advance is corrected by incrementing by 1 hour, and the fractional value is increased from “1” → “2” · “59” → “00” by pressing the high level switch SW2 to Correct the advance. Then, by pressing the decision switch SW4, the suitability of the operation procedures of the various switches is determined, the new time after correction is displayed in the time display area 2A, and the correction operation can be performed.

[Embodiment 2]
12 and 13 show Embodiment 2 of the present invention.

  In the above description, the case of performing tatami heating has been representatively described. However, the controller device of the present invention can also be used as road heating for melting snow on a road or preventing freezing.

  That is, the snowfall sensor 4 'as the first detecting means is provided on the laying surface of the road 20 on which the planar heating element 3 is laid, for example, on the road pavement surface 21 at a desired interval, and the controller device C is arranged at an appropriate place. Connected to the control means CPU.

  The outside temperature detected by the second detection means 6 is 3 ° C. or less as the standard temperature, and the snow pavement surface 4 ′ as the first detection means brings the road pavement surface 21 to a desired temperature, for example, 3 ° C. or less as the standard temperature. Is detected, the energization of the sheet heating element 3 is started under the control of the control means CPU, and the sheet heating element 3 is heated by being continued, and the snow melting on the road 20 and the road 20 freezing is prevented.

  Further, the second detection means 6 does not detect that the outside air temperature has become a desired temperature, for example, 3 ° C. or less, but the snowfall sensor 4 ′ as the first detection means causes the road pavement surface 21 of the road 20 to be 3 ° C. or less. When it is detected that energization has started, the energization of the sheet heating element 3 is started, and the energization is continued to generate heat, thereby preventing snow melting on the road 20 and freezing of the road surface.

  In the first embodiment, a host computer (shown in the figure) is installed in a remote place by routing the communication line 23... From the communication port 22... Provided in the control means CPU of each controller device C arranged in an appropriate place. Is a configuration and operation different from those of the first embodiment, except that the remote monitoring and centralized management can be performed by connecting to the other, adopting the same configuration as the first embodiment, It is the same operation.

  FIG. 14 illustrates a third embodiment of the present invention.

  In the third embodiment, the controller device C of the present invention is used for melting snow on the roof 30 or melting snow by laying the planar heating element 3 on the roof 30.

  That is, when it is detected by the second detection means 6 connected to the control means CPU of the controller device C attached at an appropriate place in the room that the outside air temperature has become a desired temperature, for example, 3 ° C. or less, the sheet heating element 3 is moved to. The energization of the roof 30 is started and heat is generated by continuing the energization, so that the snow melting and freezing of the roof 30 can be prevented.

  In addition, the second detection means 6 does not detect that the outside air temperature has become a desired temperature, for example, 3 ° C. or less, but the roof 30 on which the planar heating element 3 is laid is lowered to 3 ° C. or less by the first detection means 4. When it is detected that energization has started, the energization of the sheet heating element 3 is started and the energization is continued to generate heat, so that the snow melting and freezing of the roof 30 are prevented. This is the same configuration and action.

  The controller of the sheet heating element of the present invention can be used for various sheet heating elements such as heating tatami mats, floor heating, melting snow on roads and roofs, and preventing freezing. It can be controlled easily and with high accuracy in response to various functions such as the start and stop of body heat, start-up time, selection of set temperature, etc., handling operation is easy, there are few erroneous operations, and depending on the ambient temperature situation Convenient for high-efficiency heating with low energy loss, etc.Furthermore, the planar heating element is convenient because of its versatility, such as contributing to shortening the startup time. Suitable for fields and applications where measurement is possible.

FIG. 1 is a wiring block diagram showing Embodiment 1 of the control device for a planar heating element of the present invention. FIG. 2 is an external front view of the same. FIG. 3 is a block diagram showing an operation for setting the ON time of the sheet heating element. FIG. 4 is a block diagram showing an OFF time setting operation. FIG. 5 is a block diagram showing the temperature setting operation of the planar heating element. FIG. 6 is a block diagram showing a rapid start-up operation of the sheet heating element. FIG. 7 is also an explanatory diagram showing level 0 in the level display corresponding to the energization amount with respect to the set temperature of the planar heating element. FIG. 8 is an explanatory view showing level 1 in the same manner. FIG. 9 is an explanatory diagram showing level 2 in the same manner. FIG. 10 is an explanatory view showing level 3 in the same manner. FIG. 11 is an explanatory view showing level 4 in the same manner. FIG. 12 is a wiring block diagram showing Embodiment 2 when the planar heating element control device of the present invention is applied to road heating. FIG. 13 is a plan view showing an example of the laying state. FIG. 14 is a cross-sectional view showing a third embodiment in which the control device of the present invention is applied to a snow melting / freezing prevention device for a roof.

Explanation of symbols

1 Operation part 2 Display part 2A Time display area part 2B Set temperature display area part 2C Indoor temperature display area part 2D Operation selection display area part 2E Current setting display area part 2F Level display area part 2G Level character display area part 2H Electric energy display Area 2I Integrated power display area 3 Planar heating element 4 First detection means 4 'Snow melting sensor 5 Housing 6 Second detection means 7 Switching means 8 Power supply circuit section 9 Drive circuit section 20 Road 21 Road pavement surface 22 Communication port 30 Roof SW1 Display changeover switch SW2 High level switch SW3 Low level switch SW4 Determination switch SW5 Operation stop switch T Timer means

Claims (9)

  A display unit, a display changeover switch for switching to each mode such as a time, a heating time of the sheet heating element, a set temperature, and the like on the display unit for each desired pressing operation, and mode switching by pressing the display changeover switch A high-level switch and a low-level switch to be set and to determine the suitability of the operating procedures of the various switches, by changing the time display of the heat generation time of the sheet heating element and the set temperature later for each pressing operation at a predetermined rate. A substantially box-shaped housing having an operation unit that is capable of pressing an operation stop switch or the like for stopping operation, and first detection means connected so as to detect the heat generation temperature of the planar heating element, and the housing Inside, the first detection means is connected, a control means CPU for storing and calculating information, a timer means connected to the control means CPU and capable of setting the heat generation time of the planar heating element, Second detection means for detecting the ambient temperature around which the heating element is laid, switching means for turning on and off according to the environmental temperature detected by the second detection means, and turning on the switching means, A power supply circuit unit for energizing the planar heating element by turning OFF, and adjusting the energization amount to the planar heating element from the power supply circuit unit according to the environmental temperature, thereby generating the heating temperature of the planar heating element Is controlled to the target temperature through the control means CPU.   2. The planar shape according to claim 1, wherein the switching unit is controlled to be turned on and off by the control unit CPU based on detection information of the first detection unit and / or the second detection unit. Heating body controller device.   When the temperature detected by the first detection unit with respect to the sheet heating element approaches the set temperature, the switching unit steps the energization time per unit time required for energization by the control unit CPU for each temperature increase temperature approaching the set temperature. 3. A controller for a planar heating element according to claim 1, wherein the energization amount from the power supply circuit unit is controlled at different levels.   The switching means controls the amount of energization supplied from the power supply circuit section by the control means CPU based on information on the ambient environmental temperature detected by the second detection means. 2. A controller device for a planar heating element according to claim 3.   5. The planar heating element controller device according to claim 1, wherein the switching means is an SSR whose ON / OFF is controlled by a control means CPU.   The display changeover switch is used to switch the mode and display the operation selection display area of the display unit, and then operate the determination switch to provide the planar heating element with a function of rapidly increasing the rise of heat generation. The planar heating element controller device according to any one of claims 1 to 3, wherein the controller is for a sheet heating element.   7. The sheet heating element according to claim 1, 2, 3, 4, 5, or 6, wherein the first detecting means is a desired plurality of pairs of thermocouples. Controller device.   The temperature detection element such as a thermistor, a thermocouple, a thermometer, or the like is used as the second detection means. The claim 1, claim 2, claim 3, claim 4, claim 4, A controller device for a planar heating element according to claim 5 or claim 7.   The display unit is a display formed of an organic EL, wherein the display unit is an organic EL display. A controller device for a planar heating element according to claim 8.

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