JP2006234200A - Electric floor heating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To install a floor heating structure in a wider range in a house where the upper limit of working electric energy is set while assuring comfortable operation without exceeding the upper limit. <P>SOLUTION: This electric floor heating system S comprises a power distribution board 10 having a function of outputting an alarm when a certain amount of current or more flows therein, a controller 20 with a voltage control function, and a floor heater 30 whose heat source is a line heater. The controller 20 with the voltage control function energizes the line heater with a high voltage of 200 V, e.g., when starting heating of the floor heater 30 and energizes the line heater with a voltage of 160 V, e.g., lower than the voltage in starting heating in steady-state ON-OFF operation after starting. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric floor heating system, and more particularly, to an electric floor heating system that allows floor heating to be used comfortably without exceeding the upper limit in a house where an upper limit of power consumption is set.

  As a floor heating system, a hot water type and an electric type are known. In the hot water type, a pipe through which hot water circulates is laid on the floor base, and a wooden floor material is disposed thereon, and hot water heated by a boiler or the like is supplied to the hot water pipe as a heat source. In the electric type, a wire heater or a PTC heater is used as a heat source, and after placing it on the floor base, a wooden flooring is placed on the floor base, or the heater is integrated with the heater. The wooden flooring is placed on the floor base while being electrically connected. The heater is mainly supplied with electric power from a commercial power supply via a distribution board and a controller arranged indoors. In order to make the construction and use environment of an electric floor heating system comfortable, various proposals as described in Patent Document 1 or Patent Document 2 have been made.

  By the way, in a general house, a contract for electric power consumption is made with an electric power company, and a distribution board equipped with a breaker according to the contract is arranged at an intake port from a commercial power source. If the amount of power used exceeds the preset upper limit, the breaker will drop and the flow of electricity will be cut off, ensuring safety. In recent years, with the spread of personal computers and the like to ordinary households, it has become necessary to avoid power loss during use, and in response, when capacity reaches just before the breaker is activated, A distribution board having a function of outputting some kind of alarm is used (for example, see Patent Document 3).

  When introducing an electric floor heating system, in order to perform stable operation in a house where the upper limit of power consumption is set, the function to output an alarm when a current exceeding a certain amount flows as described above. It is desirable to use with the distribution board provided. When the total power usage approaches the upper limit, an alarm is output from the distribution board, so the user can stop floor heating by stopping the use of other power-using equipment and reducing the power usage. It can be used continuously. In the case where a PTC heater is used as a heat source, the resistance value of the heater itself increases as the heater temperature rises, so that the current value decreases and the amount of power can be suppressed. However, when the heat source is a wire heater, the amount of electric power in the heater itself cannot be suppressed, and therefore it is particularly effective to use a distribution board with an alarm function as described above.

JP 2002-115890 A Japanese Unexamined Patent Publication No. 7-248122 JP-A-6-20582

  In the case of floor heating, a large amount of energy is required during the start-up operation until the room is warmed, but a comfortable heating effect can be obtained with relatively little energy during the steady operation after the room is warmed. In the conventional operation method of an electric floor heating system in which the heat source is a line heater, continuous operation is performed for a certain period of time after the switch is turned on (that is, when the room is warmed up to the required temperature), and during subsequent steady operation The operation which repeats ON-OFF according to the time set by the controller is adopted.

  In the above operation method, the average power consumption per unit time when operating for a long time is large at the start-up and decreases during steady operation, but the power consumption at the moment is the same, and the electric floor heating system Therefore, it is necessary to adjust the setting output to a value required at the time of start-up. Therefore, in order to avoid the situation where the breaker of the distribution board is activated and the supply of electricity is stopped when used simultaneously with other electrical appliances, the floor heating area is reduced. It is usual to design the maximum power consumption so as to suppress it.

  The present invention has been made in view of the circumstances as described above. While maintaining the heating capacity at the time of startup as usual, it is possible to take a larger floor heating area than before and a stable operating environment. It is an object of the present invention to provide an improved electric floor heating system capable of maintaining the temperature for a long time.

  An electric floor heating system according to the present invention includes a distribution board having a function of outputting an alarm when a current of a certain amount or more flows, a controller with a voltage control function, and a floor heater whose heat source is a line heater. At least one output side terminal of the distribution board is connected to the controller with the voltage control function, the output side terminal of the controller with the voltage control function is connected to the line heater of the floor heater, and The controller with a voltage control function is configured to control the energization amount to the line heater of the floor heater so as to perform a steady operation after rising at a voltage lower than the heating rising voltage of the floor heater. .

  In the present invention, both the “distribution board having a function of outputting an alarm when a current of a certain amount or more flows” (hereinafter sometimes referred to as a distribution board with an alarm) and the “controller with a voltage control function” It is a conventionally known one, and there is nothing new in itself and it can be used as it is. The “floor heater whose heat source is a wire heater” may also be used in a conventional electric floor heating system. A wire heater arranged in a predetermined pattern on the floor base in advance is a wooden system. Examples include those covered with a flooring material, and those laid on a floor base while electrically connecting a wooden flooring material embedded with a wire heater.

  The electric floor heating system according to the present invention includes a distribution board with an alarm, and when the total power consumption approaches the upper limit, an alarm from the distribution board allows the user to know it, Appropriate measures can be taken, such as stopping the use of other appliances. Therefore, 100% voltage can be supplied when the floor heating is started, and a comfortable temperature rising environment can be obtained when the heating is started. Depending on the circumstances, it is of course possible to operate the controller with a voltage control function by lowering the voltage when starting up the heating.

  When the operation at the time of starting up the heating is completed, the controller of the voltage control function is controlled, and the line of the floor heater is set so that the steady operation after the start-up is performed at a voltage lower than the heating start-up voltage (for example, 80% voltage). Controls the amount of power applied to the heater. The resistance value of the wire heater is constant, and the amount of power used during steady operation is reduced by lowering the voltage. The reduced power can be sent to electrical appliances other than floor heating, and the upper limit of the floor heating output is determined by the amount of power in the steady state, so floor heaters can be installed in a larger area than before It becomes.

  The end of the heating rising state of the floor heater can be determined by various methods. For example, it may be the temperature of a room where floor heating is installed, or may be the temperature of the floor or the temperature of the floor heater itself. A test is performed under the installation environment condition of the floor heating, and it is set in advance how the temperature rises and the rising operation is finished. Then, when the room temperature or the bed temperature reaches the preset temperature, the controller with a voltage control function automatically switches from the heating rising voltage to the steady operation voltage.

  The method of switching the voltage by detecting the room temperature or the bed temperature can be expected to obtain high-precision control, but it is complicated as a system. As a further simplification, the end of the heating rising state of the floor heater may be determined based on the energization time. For example, the time from when the switch is turned on until the room temperature reaches a predetermined temperature is measured in a room where floor heating is actually installed, and the time is read by the timer provided in the controller with voltage control function. May be.

  The level of the steady operation voltage may be selected as appropriate according to the installation environment of the electric floor heating system. For example, when the 100% output voltage is 200V, the voltage is about 80%, that is, 160V. It is practical to set the temperature to about the same level, and in this case, even if the floor heater is laid in an area that is about 20% wider than that in the case of the conventional method, it is possible to continue the comfortable operation.

  According to the present invention, when electric floor heating is installed in a house where the upper limit of power consumption is set, it is possible to operate comfortably without exceeding the upper limit, and the floor heating is expanded to a wider range. It becomes possible to install the structure.

  Hereinafter, an example of an electric floor heating system according to the present invention will be described in comparison with a conventional electric floor heating system. FIG. 1 is a circuit diagram schematically showing an example of an electric floor heating system, and FIG. 2 is a circuit diagram of an electric floor heating system according to a conventional technique drawn as corresponding to FIG.

  In the electric floor heating system S shown in FIG. 1, reference numeral 10 denotes a conventionally known distribution board with alarm, which includes a plurality of output side terminals 11. An outlet, a lighting device, an air conditioner, and the like are connected to them, and a controller 20 with a voltage control function is connected to one of them. The controller 20 with a voltage control function is also conventionally known, and may have a form in which the voltage is controlled by a transformer or a form in which the voltage is controlled by a thyristor. A floor heater 30 equipped with a line heater is connected to the output side of the controller 20 with a voltage control function.

  The operation status of the electric floor heating system S will be described based on a specific example. The distribution board 10 with alarm is assumed to be of the main trunk 40A, and it is assumed that electricity of 31A is used except for floor heating, that is, on the outlet, lighting equipment or air conditioner side. In the controller 20 with a voltage control function, the floor heating start-up voltage is set to 200V, the steady operation voltage is set to 160V, and the line heater resistance of the floor heater 30 is set to 20Ω.

  Under this premise, the floor heating is switched on. Since a current of 200V / 20Ω = 10A flows to the electric heater side and 31A of electricity is used in addition, the total amount of current is 41A, and the distribution board 10 with an alarm issues an alarm. The user switches off the other electrical devices and sets the total current amount to 40 A or less, and performs continuous operation with floor heating rising. In this state, the current used on the floor heating side is 10 A, and the amount of power used is 200 V × 10 A = 2000 W.

  When a required rising condition set by elapsed time or temperature is satisfied, the controller 20 with a voltage control function is switched to steady operation. Here, 160V ON-OFF operation is assumed. As a result, the current used on the floor heating side during steady operation is 160V ÷ 20Ω = 8A and the amount of power used is 200V × 8A = 1600W, so that the amount of power used during steady operation can be cut by 20%. Furthermore, the current used on the floor heating side is 8A, and even if the electrical device is switched off and turned on first, the total current flowing through the distribution board 10 with alarm is 31A + 8A = 39A <40A. Can be used without hindrance.

  In the electric floor heating system SA according to the conventional method shown in FIG. 2, the controller 20A is an energization control type controller and does not include a voltage control mechanism. Other conditions are the same as those of the electric floor heating system S shown in FIG. Again, since 41 A of current flows at the start of start-up operation, the user receives an alarm from the distribution board 10 with an alarm, switches off other electrical appliances, sets the total amount of current to 40 A or less, Perform continuous operation at the beginning of heating. The current used on the floor heating side is 10 A, and the amount of power used is 200 V × 10 A = 2000 W.

  After starting up, it is in steady operation, but here it is 200V ON-OFF operation, the current used on the floor heating side during steady operation is 200V ÷ 20Ω = 10A, and the power consumption is 200V × 10A = 2000W Become. That is, even in steady operation, the amount of power used is the same as that at startup, that is, the amount of power at the moment does not change. Therefore, when the operation is started and the electric device is switched on first, the capacity is over when the floor heater 30 is energized (31A + 10A = 41A> 40A), and the distribution board 10 with alarm is supplied. Will output an alarm.

The circuit diagram which shows typically an example of the electric floor heating system by this invention. The circuit diagram corresponding to FIG. 1 in the electric floor heating system by the conventional method.

Explanation of symbols

S, SA: Electric floor heating system, 10: Distribution board with function to output an alarm when a certain amount of current flows (distribution board with alarm), 11: Output terminal, 20 ... Voltage Controller with control function, 30 ... floor heater with wire heater

Claims (4)

  An electric floor heating system comprising: a distribution board having a function of outputting an alarm when a current exceeding a certain amount flows; a controller with a voltage control function; and a floor heater whose heat source is a line heater. At least one output side terminal of the distribution board is connected to the controller with voltage control function, the output side terminal of the controller with voltage control function is connected to the line heater of the floor heater, and The controller with a voltage control function controls an energization amount to the line heater of the floor heater so as to perform steady operation after rising at a voltage lower than the heating rising voltage of the floor heater. Type floor heating system.   The end of the heating rise state of the floor heater is determined by the floor temperature, and when the floor temperature reaches the preset temperature, the controller with voltage control function automatically switches from the heating rise voltage to the steady operation voltage. The electric floor heating system according to claim 1, wherein the electric floor heating system is provided.   The end of the heating rise state of the floor heater is determined by the energization time, and when the preset time has elapsed, the controller with the voltage control function is automatically switched from the heating rise voltage to the steady operation voltage. The electric floor heating system according to claim 1, wherein:   The electric floor heating system according to any one of claims 1 to 3, wherein a heating rising voltage is 200V and a steady operation voltage is 160V.

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