JP2009186038A - Controller device for floor heating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller device for floor heating capable of cutting off power distribution to a plurality of electric heaters for floor heating which are independently controlled, by a single temperature fuse. <P>SOLUTION: In this controller device 5 for floor heating provided with normally-opened relay devices 17a, 17b, 18a, 18b on a plurality of heater power distribution systems a, b for guiding power source electric power to the plurality of electric heaters 1, 2 for floor heating, a power supply system a for supplying electric power for driving to each of the relay devices through a single temperature fuse 40, is applied. As the controller device melts down a temperature fuse at an abnormal temperature to cut off power distribution to each of the relay devices, and power distribution to all of electric heaters for floor heating is stopped, the plurality of temperature fuses 40 are unnecessary. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a controller for floor heating having a thermal fuse for preventing overheating.

In recent years, when heating multiple rooms in a single-family house or an apartment house, or when heating a room with a large floor area, the floor under each room or a large room is divided into several zones. Thus, floor heating electric heaters are provided under the floor of each room, and floor heating is performed.
The floor heating controller device used for such floor heating is usually installed for each room or each zone, but in recent years, in order to reduce the cost, in the case of a plurality of adjacent zones, the controller is adjacent to each other. Utilizing the layout of the electric heater for floor heating, the operation of a plurality of electric heaters for floor heating is independently controlled by one floor heating controller device.

Generally, in such a controller for floor heating, a controller body is provided with a plurality of heater energization systems that guide power supply power to a plurality of electric heaters for floor heating, respectively. A structure is used in which a normally open type relay device for connecting / disconnecting power to the heater is provided, and a control unit controls the connection / disconnection operation of these relay devices.
By the way, since the controller device for floor heating supplies electric power of high voltage to the electric heater for floor heating, there is a possibility that overheating occurs due to deterioration of components, contact failure of components, or the like.

Therefore, conventionally, in a controller device for floor heating of one channel, that is, a controller device for floor heating that controls one electric heater for floor heating, a thermal fuse is provided in the heater energization system as disclosed in Patent Document 1. ing. In other words, in order to ensure safety, when the internal temperature rises to an abnormal temperature due to overheating of parts such as a relay device, the temperature fuse in the controller device is blown and the energization to the electric heater for floor heating is cut off. .
Japanese Patent Laid-Open No. 10-38298

However, such a structure in which a thermal fuse is provided for each heater energization system causes a considerable burden in a controller device for floor heating of a plurality of channels that controls a plurality of electric heaters for floor heating with one unit.
That is, a controller device for floor heating of a plurality of channels that controls a plurality of electric heaters for floor heating with a single unit has been developed in order to reduce costs and improve compactness.

  However, a technique for obtaining safety by providing a temperature fuse in the heater energization system as in the one-channel controller device shown in Patent Document 1 is a multi-channel type in which a plurality of floor heating electric heaters are controlled by a single controller device. In the case of application to the controller apparatus, the energization of the plurality of electric heaters for floor heating cannot be cut off unless a temperature fuse is provided for each of the plurality of heater energization systems of the apparatus. That is, in order to cut off the energization of the electric heater for floor heating, the same number of thermal fuses as the electric heater for floor heating are required.

  In this case, in the case of a controller device having a plurality of channels, a cost burden is imposed because a plurality of thermal fuses are attached. In addition, it is also necessary to secure a space for installing a plurality of thermal fuses, and target cost reduction and improvement in compactness are impaired. For this reason, there is a need for an energization cutting technique suitable for a multi-channel controller device.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a floor heating controller device that cuts off power supply to a plurality of floor heating electric heaters that are independently controlled by a single temperature fuse.

In order to achieve the above object, the invention according to claim 1 is a floor heating controller in which a normally open relay device is provided in each of a plurality of heater energization systems for guiding power supply power to a plurality of electric heaters for floor heating. The device employs a power supply system that supplies driving power to each relay device through a single thermal fuse.
With this configuration, when an abnormal temperature rise occurs inside the controller device, the temperature fuse is blown, the power supply to each relay device is cut off, and the power supply to each floor heating electric heater is stopped. This eliminates the need for installing a plurality of thermal fuses.

According to the second aspect of the present invention, the thermal fuse is a power supply terminal portion for inputting power supply power in a power supply system for supplying driving power to each relay device so that the thermal fuse can be installed with a simpler structure. A configuration that incorporates power into the power circuit to the power circuit is adopted.
The invention according to claim 3 similarly employs a configuration in which the thermal fuse is incorporated in the common energizing portion of the relay energizing portion of the power feeding system that supplies driving power from the power supply circuit to each relay device.

In the fourth aspect of the invention, similarly, the power supply system that supplies the driving power to each relay device is configured to control the power output from the power supply circuit unit supplied to the relay device through the control unit energization unit. A structure in which a temperature fuse is incorporated into the current-carrying part for the control part is adopted.
According to the fifth aspect of the present invention, the single temperature fuse is any one of the power supply terminal portion, the plurality of heater terminal portions, and the plurality of relay devices, so that the single temperature fuse reacts effectively. When two or more were overheated, they were blown out.

According to the first aspect of the present invention, the controller device that controls a plurality of floor heating electric heaters by a single unit simply provides a single temperature fuse and energizes the plurality of floor heating electric heaters when overheating occurs. Can be cut off.
Therefore, the control device does not need the same number of temperature fuses as the floor heater electric heater, and the cost of the device can be reduced. In addition, the space for installing the thermal fuse is minimal, and the device can be compact.

According to the second to fourth aspects of the present invention, it is possible to prevent overheating with a single thermal fuse by simply installing the thermal fuse.
According to the fifth aspect of the present invention, the single thermal fuse may be overheated, the power supply terminal portion (for example, overheating due to contact failure), a plurality of heater terminal portions (for example, overheating due to contact failure). And can effectively operate against overheating of many components such as multiple relay devices (eg, overheating due to degradation).

Hereinafter, the present invention will be described based on a first embodiment shown in FIGS.
FIG. 1 shows a floor heating apparatus using a plurality of electrical panels for floor heating of a house device used in a general house, for example, a series of living room α and dining room β (two adjacent zones). Show.
The floor heating apparatus includes a panel heater 1 that is an electric heater for floor heating installed under the floor of the living room α, a panel heater 2 that is an electric heater for floor heating installed under the floor of the dining room β, It comprises a single floor heating controller device 5 (corresponding to the floor heating controller device of the present application) installed on the wall 3 at the boundary between the rooms α and β.

The controller device 5 is, for example, a two-channel type that can perform floor heating control of both (a plurality of) the living room α and the dining room β. 2 is a side sectional view of the controller device 5, FIG. 3 is an exploded perspective view of the controller device 5, and FIG. 4 is a control block diagram of the controller device 5. Has been.
The controller device 5 has a structure in which various control devices for controlling the operation of the panel heater 1 (living room α side) and the panel heater 2 (dining room β side) are incorporated in the controller body 8.

Specifically, as shown in FIGS. 1 to 3, the controller body 8 includes, for example, a box-shaped housing portion 6 embedded in the wall portion 3 and a surface disposed along the wall surface of the wall portion 3. It is comprised from the panel part 7. FIG. In addition, the surface panel part 7 is assembled | attached to the flange part 6a currently formed in the front end of the housing part 6 so that attachment or detachment is possible.
As shown in FIGS. 2 and 3, the power supply board 11 is housed in the back side of the housing portion 6, and the display board 30 is installed on the opening side. Among them, the power supply board 11 is equipped with two systems (plurality) of heater energization systems a and b for the panel heater 1 (for the living room α) and the panel heater 2 (for the dining room β) shown in FIG. ing.

  These heater energization systems a and b are, for example, two power terminal blocks 12a and 12b (corresponding to the power terminal portion of the present application) installed on the upper back of the power board 11 and the back of the power board 11 in the same manner. Two (a plurality of) heater terminal blocks 13a and 13b (corresponding to the heater terminal portion of the present application) installed in the lower stage are individually connected by connection lines 14a and 14b. Among these, the power supply terminal blocks 12a and 12b are connected to two power supply cables 15a and 15b (commercial power supplies) extending from individual household breakers (not shown) as power supplies as shown in FIG. . Also, heater cables 16a and 16b extending from the panel heater 1 (living room α) and the panel heater 2 (dining room β) are connected to the heater terminal blocks 13a and 13b, and the power source power input from the power terminal blocks 12a and 12b is connected. Are output from the heater terminal blocks 13a and 13b to the panel heaters 1 and 2, respectively.

  On the plate surface of the power supply board 11, for example, around the front center of the power supply board 11, four (plural) normally open relay devices 17 a, 17 b, 18 a, 18 b are dotted as shown in FIGS. 2 and 3. Is installed. Two of these relay devices 17a, 17b, 18a, 18b are incorporated in each of the two heater energization systems a, b. Since the relay devices 17a and 17b and the relay devices 18a and 18b are all the same structure, the one side relay device 17a and the relay device 18a are mainly shown in the control block diagram of FIG. 4 for easy understanding. A simplified diagram (relay device 17b and relay device 18b are omitted) is used.

  Specifically, as shown in FIG. 4, the relay devices 17a, 17b, 18a, and 18b all have a relay coil 19, a relay drive circuit 20 that drives the relay coil 19, and is normally opened to drive the relay coil 19. Then, the relay contact 21 that is closed is combined. Among these, the relay contacts 21 of the relay devices 17a and 17b are connected to the respective connection lines 14a of the heater energization system a (only one side is shown). The relay contacts 21 of the relay devices 18a and 18b are connected to the respective connection lines 14b of the heater energizing system b (only one side is shown), and the relay contacts 21 are opened and closed to the heater panels 1 and 2, respectively. Is connected or disconnected (connection / disconnection).

  Further, as shown in FIGS. 2 and 3, the power supply board 11 is equipped with a power feeding system 23 that supplies driving power to various devices. As shown in FIG. 4, the power supply system 23 is a combination of a power supply circuit unit 25 that outputs power by changing a power supply (AC) output from one side, for example, the power supply terminal block 12a to a DC power of a predetermined voltage, and various energization units. It is configured. Specifically, the power supply circuit unit 25 uses a structure in which a transformer unit and a rectification unit are combined, although not shown. A relay energizing section 26 extends from the output section of the power supply circuit section 25 as shown in FIG. The relay energization unit 26 is formed by a common energization unit 26 a on the input side and a branch energization unit 26 b that branches for each relay drive circuit 20 on the output side. The common energization unit 26a reaches the power supply circuit 25, the branch energization unit 26b is connected to each relay drive circuit 20, and the power supply circuit unit 25 and each relay device 17a, 17b, 18a, 18b are connected in parallel. That is, the power output from the power supply circuit unit 25 is supplied to each relay device 17a, 17b, 18a, 18b for driving the relay. Further, from the common energization part 26a, the energization part 27 for the control part is also branched along with the branch passage part 26b.

  On the other hand, as shown in FIG. 2 and FIG. 3, the display board 30 has a liquid crystal display type display module unit 31 mounted on the front upper portion, for example, and is formed below the display module unit 31 with a CPU and its peripheral circuits. A control unit 32, a room temperature sensor (not shown), a plurality of key on / off switch units 33a to 33j, and the like are mounted. The room temperature sensor (not shown) and the plurality of key on / off switch units 33a to 33j are connected to the control unit 32. As shown in FIG. 4, the output side of the control unit energization unit 27 is connected to the power input unit of the control unit 32, and the power output from the power supply circuit unit 25 is used as the drive power for the control unit 32. , To be supplied to the control unit 32. The front side of the display board 20 is covered with a see-through cover 35 as shown in FIGS.

  Among these, the see-through cover part facing the liquid crystal display surface of the display module part 31 faces the display window 35 formed in the upper part of the front panel part 7 as shown in FIGS. The push knob portions 34 of the key on / off switch portions 33a to 33j all pass through the fluoroscopic cover portion, are guided to the key operation surface 7a formed on the front surface of the front panel portion 7, and together with the display window 35, the two channels An operation unit 37 required for floor heating operation of (living room α, dining room β) is formed. Specifically, the temperature setting operation key units 41a and 41b for adjusting the floor temperature, the operation operation key units 42a and 42b for turning on and off the floor heating operation, the timer operation operation key units 43a and 43b for turning on and off the timer floor heating operation, A timer setting operation key unit 44 for setting the timer time, a clock operation key unit 45 for adjusting the time, and the like are formed. The display board 20 and the power supply board 11 are electrically connected by a connector portion 38 (shown in FIGS. 2 and 3).

  In such a two-channel type controller device 5, as shown in FIG. 4, when an abnormal temperature is sensed in the power supply system 23, the energization to all the relay devices 17 a, 17 b, 18 a, 18 b is cut off. One, or single, thermal fuse 40 is incorporated. Specifically, the thermal fuse 40 is incorporated in, for example, a connection line 23 a from the power supply terminal block 12 a to the power supply circuit unit 25 in the power supply system 23. When the temperature fuse 40 is blown by the power supply system 23 that supplies driving power to the relay devices 17a, 17b, 18a, and 18b through such a single temperature fuse 40, all the normally open relay devices 17a and 17b. , 18a, 18b are de-energized, and all the relay devices 17a, 17b, 18a, 18b are opened (opened) at a time.

  Further, the thermal fuse 40 is installed at a position close to the power terminal blocks 12a and 12b, the heater terminal blocks 13a and 13b, and the relay devices 17a, 17b, 18a and 18b so that overheating can be detected quickly in the controller device 5. ing. Specifically, the thermal fuse 40 is formed of the power supply board 11 surrounded by the power supply terminal blocks 12a and 12b, the heater terminal blocks 13a and 13b, and the relay devices 17a, 17b, 18a and 18b as shown in FIGS. It is installed in the center of the front and is attached in a layout approaching each component that is prone to overheating. Thus, when one or more of the power terminal blocks 12a, 12b, the heater terminal blocks 13a, 13b, and the relay devices 17a, 17b, 18a, 18b are overheated, the thermal fuse 40 receives the heat and blows. It is. In particular, the thermal fuse 40 is arranged close to the relay device 17a close to the relay device 17a disposed on the upper side, and has a structure in which fusing easily occurs even when the upper relay device 17a is overheated (upper side). The heat of the relay device 17a escapes upward).

Next, the operation will be described.
In the controller device 8 configured in this way, for example, if the operation key part 42a disposed on the living room α side is turned on, the power supply power is disposed under the floor of the living room α through the heater energization system a. The panel heater 1 is supplied. Then, under the control of the control unit 32, the relay devices 17a and 17b are controlled to open and close according to the set floor heating temperature. The living room α is heated to the set heating temperature by the energization control of the panel heater 1. Of course, if the dining room β is floor heated, the living room α is similarly heated to the set heating temperature by the energization control of the panel heater 1 by the control unit 32.

  In such a two-channel controller device 8, for example, the relay device 17a (or relay device 17b) and the relay device 18a (or relay device 18b) are overheated due to deterioration or the power terminal block 12a (or power terminal block 12b). ) And the heater terminal block 13a (or the heater terminal block 13b) are overheated due to poor contact with the cable.

Then, the temperature inside the controller device 8 rises abnormally.
The thermal fuse 40 senses this abnormal temperature and causes fusing. At this time, since the power feeding system 23 has a structure for guiding the driving power to each relay device 17a, 17b, 18a, 18b through the thermal fuse 40, only one, that is, a single thermal fuse 40 is blown. All the relay devices 17, 17b, 18a, 18b are de-energized. Thereby, all the relay devices 17a, 17b, 18a, and 18b are opened (off) at a time (because of the normally open type).

Therefore, the energization of all panel heaters, that is, the panel heater 1 for floor heating of the living room α and the panel heater 2 for floor heating of the dining room β is cut off.
However, unlike the method of providing the same number of temperature fuses as the panel heaters by providing the same number of one-channel controller devices as the panel heaters, the number of temperature fuses 40 equal to the number of panel heaters 1 and 2 is not required. (Single), the power supply to the plurality of panel heaters 1 and 2 can be cut off. That is, the failure due to overheating (continuous energization of the panel heater, damage to the terminal block, etc.) can be avoided with only one thermal fuse 40, and safety can be ensured.

  Therefore, the minimum number of thermal fuses 40 in the controller device 8 of a plurality of channels is sufficient regardless of the number of panel heaters, and the cost for installing the thermal fuse 40 can be reduced. In addition, the space for installing the thermal fuse 40 can be minimized, the compactness of the controller device 8 can be achieved, and this greatly contributes to the controller device 8 having a plurality of channels.

  In particular, the thermal fuse 40 is disposed at a point close to any of the power supply terminal blocks 12a and 12b, the heater terminal blocks 13a and 13b, and the relay devices 17a, 17b, 18a and 18b, which may cause overheating. It is possible to react quickly to overheating of each component, and even if one or more of the power terminal blocks 12a and 12b, the heater terminal blocks 13a and 13b, and the relay devices 17a, 17b, 18a and 18b are overheated, The thermal fuse 40 can effectively prevent overheating. In addition, when the power supply terminal blocks 12a and 12b, the heater terminal blocks 13a and 13b, and the relay devices 17a, 17b, 18a, and 18b are disposed around the thermal fuse 40, the thermal fuse 40 is disposed on the components disposed on the upper side. On the other hand, when it arrange | positions so that it may approach especially, fusing which paid attention to the raise characteristic of a heat | fever can be performed, and still higher safety | security can be ensured.

  In addition, the overheat prevention structure incorporates a thermal fuse 40 in a path from the power supply terminal block 12a to the power supply circuit unit 25 in the power supply system 23 that supplies power for driving the relay device, and the relay device passes through the thermal fuse 40. It is only necessary to supply driving power to 17a, 17b, 18a, and 18b, and overheating of the controller device 8 and the panel heaters 1 and 2 can be prevented by simply installing the thermal fuse 40.

FIG. 5 shows a second embodiment of the present invention.
In this embodiment, the thermal fuse 40 is not incorporated in the path from the power terminal block to the power circuit as in the first embodiment, but the input side composing the relay energization unit 26 in the power feeding system 23 is shared. A thermal fuse 40 is incorporated in the energizing portion 26a.
Even in such a simple installation of the thermal fuse 40, as in the first embodiment, when one thermal fuse 40 is blown, the energization to the relay devices 17a, 17b, 18a, and 18b can be cut off.

FIG. 6 shows a third embodiment of the present invention.
The present embodiment is a modification of the second embodiment, and a thermal fuse 40 is connected to the control unit energization unit 27 that guides the driving power from the power supply circuit unit 25 to the drive control unit 32 in the power feeding system 23. It is incorporated.
Since the drive control unit 32 is driven by the power supplied through the control unit energization unit 27, even when such a simple temperature fuse 40 is installed, if one temperature fuse 40 is blown, the control unit 32. Since the power supply to the power supply is cut off, the function of the control unit 32 itself is stopped, and all the relay devices 17a, 17b, 18a, and 18b can be opened.

However, in FIG. 5 and FIG. 6, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In addition, this invention is not limited to any embodiment mentioned above, You may implement in various changes within the range which does not deviate from the main point of this invention. For example, in the above-described embodiment, a two-channel controller device that controls two panel heaters by one unit is described. However, the present invention is not limited to this, and three panel heaters or three or more panel heaters are controlled by one unit. The present invention may be applied to such a multi-channel controller device.

  In the embodiment described above, for the sake of convenience, the controller device is described as controlling one panel heater for each channel. For example, a plurality of panel heaters are connected in series or in parallel to the same heater terminal in the controller device. It goes without saying that a plurality of panel heaters may be controlled by connection and control for one channel.

The perspective view which shows the external appearance of the controller apparatus of 2 channels (multiple channels) which concerns on the 1st Embodiment of this invention. The sectional side view of the controller device. The disassembled perspective view of the controller device. The block diagram which shows the control system of the controller apparatus. The block diagram which shows the control system of the controller apparatus of 2 channels used as the principal part of the 2nd Embodiment of this invention. The block diagram which shows the control system of the controller apparatus of 2 channels used as the principal part of the 3rd Embodiment of this invention.

Explanation of symbols

1, 2 Panel heater (electric heater for floor heating)
5 Controller device 8 Controller body 11 Power supply board 12a, 12b Power supply terminal block (Power supply terminal part)
13a, 13b Heater terminal block (heater terminal part)
17a, 17b, 18a, 18b Relay device 23 Power supply system 25 Power supply circuit unit 26 Relay energization unit 26a Common energization unit 26b Branch passage unit 27 Control unit energization unit 32 Control unit 40 Thermal fuse a, b Heater energization system

Claims (5)

A plurality of heater energization systems that respectively lead power to a plurality of floor heaters;
A plurality of normally open relay devices, each provided in the heater energization system, each for connecting and disconnecting energization to the electric heater;
A single thermal fuse that blows when an abnormal temperature is sensed,
A power supply system for supplying driving power to each relay device through the single temperature fuse;
A control unit for controlling the connection / disconnection operation of each relay device;
A controller for floor heating, comprising: The heater energization system has a power supply terminal portion for inputting power supply power, and a heater terminal portion for outputting power input from the power supply terminal portion to an electric heater for floor heating,
The power supply system is configured to include a power supply circuit unit that supplies power to each relay device by changing the power output from the power supply terminal unit to a predetermined voltage,
The floor heating controller device according to claim 1, wherein the single temperature fuse is incorporated in a path that guides electric power from the power supply terminal unit to the power supply circuit unit. The heater energization system has a power supply terminal portion for inputting power supply power, and a heater terminal portion for outputting power input from the power supply terminal portion to an electric heater for floor heating,
The power supply system includes a power supply circuit unit that changes power output from the power supply terminal to a predetermined voltage, and a common energization unit and a branch energization unit for each relay device from the power supply circuit unit. And a relay energization section for guiding the driving power to
The controller for floor heating according to claim 1, wherein the single temperature fuse is incorporated in a common energization unit of the relay energization unit. The heater energization system has a power supply terminal portion for inputting power supply power, and a heater terminal portion for outputting power input from the power supply terminal portion to an electric heater for floor heating,
The power supply system converts a power output from the power supply terminal to a predetermined power and supplies the power to each relay device, and a control unit for guiding the power output from the power supply circuit unit to the control unit Having a current-carrying part,
The control unit is driven by electric power supplied through the control unit energization unit,
The floor heating controller device according to claim 1, wherein the single temperature fuse is incorporated in the energization unit for the control unit. The single temperature fuse is blown by overheating any one or more of the power supply terminal portion, the plurality of heater terminal portions, and the plurality of relay devices. The controller device for floor heating according to any one of claims 4 to 5.

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