JP4526439B2 - Electric floor heating system - Google Patents

Description

  The present invention relates to an electric floor heating system having a wire heater as a heat source.

  An electric floor heating system having a line heater as a heat source is known. After placing the wire heater on the floor foundation, place the wooden flooring from above, or place it on the floor foundation while electrically connecting the wooden flooring with the line heater integrated, The electric floor heating system. The line heater is mainly supplied with electric power from a commercial power supply via a controller. The controller is provided with functions such as specifying a heating area, starting and stopping power feeding, selecting a floor heating level, supplying power corresponding to the floor heater, and detecting an abnormality (see Patent Document 1, Patent Document 2, etc.) ).

  Depending on the external environment where the floor heating is installed (for example, outside temperature) or the user's own preference for floor heating (for example, whether they prefer a relatively high indoor temperature environment) One of the floor heating levels (for example, maximum, middle, minimum) preset in the controller is selected by operating a switch. The control device in the controller sets the energization rate for the line heater according to the selected floor heating level and outputs it to the heater driving means. In response to this, the heater driving means drives the line heater with a maximum output (for example, 100% output), an intermediate output (for example, 60% output), and a minimum output (for example, 20%) to generate desired heat generation.

As an example, when a line heater with a rated output of 52 W is used, when the user selects the maximum floor heating level, the state becomes 100% energized and an output of 52 Wh is obtained. When the intermediate floor heating level is selected, for example, 60% energized state is obtained, and an output of 52 W × 0.6 = 31.2 Wh is obtained. When the minimum floor heating level is selected, for example, 20% energized state is obtained, and 52 W × 0.2. = 10.4 Wh output is obtained.
Japanese Unexamined Patent Publication No. 7-248122 JP-A-10-185222

  In the case of floor heating, the heat insulation condition of the floor base has a great influence on the indoor heating (temperature increase effect). In general, when designing an electric floor heating system, use a wire heater with a rated output suitable for the temperature environment in the area where the floor heating is installed, set the heat insulation conditions for the floor base as required, and Below, as described above, the controller selects the current supply rate to the line heater as desired so that desired outputs such as 100% output, 60% output, and 20% output can be selectively obtained. .

  In the case of a newly built property, the thermal insulation conditions of the floor foundation are adjusted according to the design specifications, that is, the floor foundation with the desired thermal insulation conditions is constructed by appropriately selecting the material used for the floor foundation and the type of insulation. It is easy to do so, and even if a conventional controller is used, no particular trouble occurs.

  However, when a new electric floor heating system is laid on the floor base, such as when renovating a building, it is often necessary to accept the existing floor base conditions as is. Because the conditions (heat dissipation conditions) are different, even if an electric floor heating system is constructed according to standard construction in the area, the heating capacity of the wire heater is too low to provide sufficient heating. Or the heater capacity may be too great and feel overheated. For this reason, it may be necessary to prepare line heaters with different outputs depending on the heat insulation conditions of the floor base during renovation. Even in the case of a new construction, the heat insulation conditions of the floor base may be different depending on the house maker, so it is necessary to prepare line heaters with different outputs in order to build an electric floor heating system with the same heating conditions. Sometimes it becomes.

  The present invention has been made in view of the circumstances as described above, and even when the floor ground condition for installing the electric floor heating system (the thermal insulation condition of the floor ground) is different, the line heater does not change, An object of the present invention is to provide an electric floor heating system in which a substantially similar floor (indoor) heating state can be obtained only by changing the setting on the controller side.

  An electric floor heating system according to the present invention is an electric floor heating system including at least a line heater that is a heat generation source and a controller that has at least a function of controlling an energization rate to the line heater, and the controller includes: Two or more energization rate tables for determining the energization rates for the line heaters corresponding to two or more floor heating levels, a first selection means for selecting one of the two or more energization rate tables, and two stages Corresponds to the floor heating level selected by the second selection means for selecting one of the floor heating levels from the above floor heating levels and the second selection means in the energization rate table selected by the first selection means. And at least a heater driving means for driving the line heater at an energization rate.

  The controller used in the electric floor heating system according to the present invention is used for the user to select one of the floor heating levels from the multi-stage floor heating level of the electric floor heating system, as in the conventional controller. In addition to including the second selection means, the power supply table further includes two or more power supply rate tables that determine the power supply rate to the line heater corresponding to each floor heating level, and the two or more power supply rate tables First selection means for selecting any one of them.

  Assume that the controller includes three energization rate tables T1, T2, and T3 where the maximum energization rate PH is T1> T2> T3. When installing an electric floor heating system on a floor base with standard heat insulation conditions, the contractor selects the power supply rate table T2 having an intermediate maximum power supply rate PH by the first selection means. Build the system. The user performs floor heating by appropriately selecting the floor heating level according to his / her preference from among the multi-stage floor heating levels determined in the set energization rate table T2.

  When an electric floor heating system is installed on a floor substrate that is under a heat insulation condition lower than the standard heat insulation condition at the time of renovation, etc., it is used indoors even if the wire heater generates the same amount of heat. Since the person feels that the amount of heat released from the floor base is increased, the heating is insufficient (the capacity of the heater is insufficient). Therefore, it is required to increase the amount of heat generated by the heater.

  In this case, the contractor constructs the floor heating system by selecting the energization rate table T1 that sets the maximum energization rate PH higher than the energization rate table T2 by the first selection means. Thereby, even if the user selects and operates any of the floor heating levels set in the energization rate table T1 by the second selection means after the construction, the amount of heat generated by the line heater is stored in the energization rate table T2. Since it becomes larger than the case by the value based on the energization rate difference ΔP at each level, the user does not feel that heating is insufficient (underheating).

  Conversely, when an electric floor heating system is installed on a floor foundation that has a higher insulation condition than the standard insulation condition, even if the heat generation is the same, the amount of heat released from the floor foundation is small. Only users in the room will feel overheating (overheating). In that case, the contractor uses the first selection means to select the energization rate table T3 in which the maximum energization rate PH is set lower than the energization rate table T2, and construct the floor heating system. Thereby, even if the user selects and operates any of the floor heating levels set in the energization rate table T3 by the second selection means after the construction, the amount of heat generated by the line heater is stored in the energization rate table T2. As compared with the case, it becomes smaller by the value based on the difference in energization rate at each level -ΔP, so that the user does not feel overheating (excessive temperature rise) and does not feel insufficient heating.

  As described above, in the electric floor heating system according to the present invention, the heat insulation condition of the floor floor that has been constructed is simply performed by appropriately selecting one of the energization rate tables by the first selection means attached to the controller. Even if they are different, the user can be provided with a substantially similar comfortable floor heating environment. Therefore, it is no longer necessary to prepare various types of line heaters with different rated outputs according to the heat insulation conditions of the floor, and it is possible to share heater components simply by changing the controller settings. It becomes. As a result, the construction cost is greatly reduced, and the inventory management of the parts becomes easy.

  In the above description, the three energization rate tables (T1, T2, T3) are provided for easy understanding of the description. However, it may be two or four or more. It is. In addition, the number of floor heating level sections in each energization rate table may be any number as long as it is two or more. Furthermore, the same energization rate table can be provided for different types of line heaters with different rated outputs, thereby further broadening the versatility of the controller.

  In addition, when electric floor heating is newly installed at the time of renovation, it can be predicted that it will often be applied to floor bases that have lower heat insulation conditions than those required for standard floor heating construction. Therefore, a larger output is required for the line heater. In order to cope with this, in the electric floor heating system according to the present invention, a line heater having a larger rated output than a line heater (for example, a rated output 52 W heater) standardized in the conventional electric floor heating system ( For example, it is recommended that the rated output 60W heater) be a standard specification product in advance.

  Thereby, in the above example, the power supply rate table T2 is selected as the power supply rate table to be selected by the first selection means when the work is performed on the floor base with standard heat insulation conditions (in this case, the line (The heater generates heat only at an output below the rated output at the maximum), and when applying to a floor base where the heat insulation conditions are further lowered, by selecting the energization rate table T1 by switching the first selection means, Heat generation at a high output (for example, rated output) can be caused by the heater, and a sufficiently satisfied floor heating environment can be obtained by using the same construction unit as it is.

  In the electric floor heating system according to the present invention, the first selection means is used to change the setting of the controller at the time of construction, that is, to select one of the plurality of energization rate tables. Thereafter, the first selection means is not used. For this purpose, it is recommended to adopt a dip switch as the first selection means and to attach it at a position in the controller that is not easily accessible by the user under normal use conditions. As a result, it is possible to effectively avoid an unnecessary erroneous operation.

  Further, although not essential, the energization rate for each floor heating level in each energization rate table is the output ratio of the line heater between the floor heating levels of each stage selected by the selection of the second selection means. It is preferable that the same ratio is set in the current ratio table. For example, in all the energization rate tables, when the heater output at the maximum energization rate PH is 100%, the heater output is 60% at the intermediate energization rate, the heater output is 20% at the minimum energization rate, etc. Thus, it is desirable to distribute the set energization rate value, so that all users can experience a stable floor heating environment.

  According to the present invention, the user can be provided with almost the same comfortable floor heating environment even when the heat insulation condition of the floor base to be constructed is different by only changing the setting of the controller. Therefore, it becomes unnecessary to prepare various types of line heaters with different rated outputs according to the heat insulation conditions of the floor base as in the conventional case, and it is possible to share heater parts. Thereby, the construction cost of the electric floor heating system can be significantly reduced. Also, inventory management of parts becomes easy.

  Hereinafter, the present invention will be described with reference to embodiments. FIG. 1 is a schematic view showing an electric floor heating system according to the present invention, FIG. 2 is a block diagram showing an overall control system, and FIG. 3 is a pulse waveform showing energization rate control in the electric floor heating system. FIG. 4 shows an example of an energization rate table used in the electric floor heating system.

  In FIG. 1, a line heater 11 as a heat source is disposed on a floor substrate 10, and a large number of wooden floor materials 12 in which concave grooves for accommodating the line heater 11 are formed on the back surface are laid. Electric floor heating floor is made. Although not shown in the figure, an electric floor heating floor may be made by placing a wooden floor material in which a line heater is integrated into a floor base while being electrically connected. In any case, commercial power from the outside is supplied to the line heater 11 via the wiring 13, and the controller 20 is attached in the middle of the wiring.

  The wire heater 11 is a wire heater similar to that used in a conventional electric floor heating system, and the controller 20 selectively selects a heating area similarly to a controller used in a conventional electric floor heating floor. A function to identify, a function to start and stop power feeding, a function to select a floor heating level (maximum level, intermediate level, minimum level, etc.), a function to supply power corresponding to the selected floor heating level to the line heater, It has a function to detect abnormalities such as local overheating.

  The controller 20 according to the present invention is compatible with the above-described plurality of floor heating levels L (for example, the maximum level LH, the intermediate level LM, the minimum level LL) in addition to the conventionally known means for performing the above functions. Two or more (three in this example) energization rate tables 41 (T1, T2, in this example) that determine the energization rate P (for example, the maximum energization rate PH, the intermediate energization rate PM, and the minimum energization rate PL). T3), first selection means for selecting any one of the current rate tables Ti from the current rate table 41 (T1, T2, T3), and the plurality of floor heating levels L (maximum level LH, intermediate level) LM, minimum level LL) from the second selection means for selecting one of the floor heating levels Li, and the second selection means in the energization rate table Ti selected by the first selection means. Characterized in that it comprises a heater driving means for driving the wire heater 11 in duty factor Pi corresponding to been floor heating level Li. Hereinafter, an example of the electric floor heating system according to the present invention will be described focusing on the above-described characteristic points of the controller 20.

  FIG. 2 is a block diagram showing a control system of the entire electric floor heating system. The electric floor heating system according to the present invention includes a controller 20 and a line heater 11 through which a current flows at a current rate controlled by the controller 20. Become. The controller 20 includes a control unit 30, and an operation panel 31, a dip switch 33 corresponding to the first selection means in the present invention, a storage unit 40, and a drive circuit 50 are connected to the control unit 30.

  The operation panel 31 includes a conventionally known ON / OFF switch 35 for the entire system, a display 36 for displaying an operation mode, a heating area selection switch 37, floor heating level selection switches 38a to 38c, and the like. The floor heating level selection switches 38a to 38c correspond to the second selection means in the present invention, and select the floor heating level Li of the floor heating system. In this example, when the selection switch 38a is selected, a command to operate at the maximum level LH is transmitted to the control unit 30, and when the selection switch 38b is selected, a command to operate at the intermediate level LM is transmitted to the control unit 30. When the selection switch 38c is selected, a command for operating at the minimum level LL is transmitted to the control unit 30. Note that the second selection unit may have a form in which the value continuously changes like a slider switch.

  The storage unit 40 has the three-stage floor heating level L (maximum level LH, intermediate level LM, minimum level LL) in which the energization rate P (maximum energization rate PH, intermediate energization rate PM, minimum energization rate PL) to the wire heater 11 is set. ) Are stored in correspondence with each other, and information on the selected power supply rate table Ti is sent to the control unit 30. Reference numeral 33 denotes a dip switch (first selection means referred to in the present invention) built in the controller 20, and selects any one of the energization rate tables T1 to T3. A selection signal from the DIP switch 33 is sent to the control unit 30, and the control unit 30 takes in the selected energization rate table Ti from the storage unit 40. As described above, the energization rate table 41 to be stored is not limited to three.

  The drive circuit 50 is a circuit for supplying current from the power supply line 13 to the heater 11 at a controlled energization rate, and incorporates a switching circuit 51 as an example of means for performing energization rate control. The switching circuit 51 has a switching element such as a thyristor, and the conduction rate P to the heater 11 is controlled by varying the conduction period of the switching element. More specifically, as shown in FIG. 3, a pulse signal having a cycle S is sent from the control unit 30 to the switching circuit 51. The pulse signal S makes the switching circuit 51 conductive in the high level period S1, and makes the switching circuit 51 nonconductive in the low level period S2. The controller 30 is based on the energization rate P (maximum energization rate PH, intermediate energization rate PM, minimum energization rate PL) to the line heater 11 defined in the selected energization rate table Ti fetched from the storage unit 40. The level period S1 is calculated and the signal is transmitted to the switching circuit 51.

  Although not shown, a signal from a thermostat attached to the heater 11 is also fed back to the drive circuit 50, and energization ON / OFF control during steady operation is also performed as in a conventionally known controller.

  FIG. 4 shows an example of the energization rate table 41 (T1, T2, T3). As shown in the figure, each table has an energization rate P (maximum energization rate PH, intermediate energization rate PM, minimum energization) corresponding to a floor heating level L (maximum level LH, intermediate level LM, minimum level LL) divided into three stages. The rate PL) is defined respectively. In this example, the maximum energization rate PH, the intermediate energization rate PM, and the minimum energization rate PL are all in the order of T1> T2> T3.

  In this example, a rated output 200P-60W heater is used as the line heater 11, and a maximum output of 60 Wh is made at an energization rate of 200P. Thereafter, the output also decreases in proportion to the decrease of the energization rate. In each energization rate table T (T1, T2, T3), when the line heater output at each maximum level LH is 100%, the line heater output is 60% at the intermediate level LM and 20% at the minimum level LL. The respective energization rates P (the maximum energization rate PH, the intermediate energization rate PM, and the minimum energization rate PL) are determined at such voltage values that can be obtained.

  In the construction of the electric floor heating system according to the present invention, the contractor operates the dip switch 33 which is the first selection means, and sets the power supply rate table T optimum for the floor ground condition of the construction site to the tables T1 to T3. Choose from either As an example, in the case of construction in a newly built property, the floor ground condition with standard heat insulation performance is set, so the table T2 having the intermediate maximum output level LH is selected.

  After the construction, when the user turns on the ON-OFF switch 35 of the operation panel 31, the control unit 30 reads the selected dip switch, and the information on the corresponding energization rate table T2 is stored from the storage unit 40 to the control unit 30. Into. In a normal case, the start-up operation at an output of 100% first proceeds for a predetermined time. In this example, the energization rate corresponding to the maximum output level LH of the energization rate table T2 is 85%, and the pulse signal S in the high level period S1 that gives an energization rate of 85% is sent from the control unit 30 to the drive circuit. Sent to. In this example, the rated output of the wire heater 11 is 200P-60W, and the startup operation of the heater 11 at 51 Wh (60 W × 0.85) proceeds.

  After the start-up operation for a predetermined time, the user selects any one of the floor heating level selection switches 38a to 38c as the second selection means, and enters the steady operation. When the selection switch 38a is selected, a command to operate at the maximum level LH is transmitted to the control unit 30, and the drive circuit 50 continues operation at an energization rate of 85%. When the selection switch 38b is selected, an instruction to operate at the intermediate level LM (energization rate 51%) is transmitted to the control unit 30, and the control unit 30 performs a pulse in the high level period S1 such that the conduction rate is 51%. The signal S is transmitted to the driving circuit 50. Thereby, the steady operation of the heater 11 is continued at an energization rate of 51%. The output here is 30.6 Wh (60 W × 0.51, 51 W × 0.6). When the selection switch 38c is selected, the steady operation at the minimum level LL (energization rate 17%) is continued, and the output is 10.2 Wh (60 W × 0.17, 51 W × 0.2).

  The case where this electric floor heating system is constructed on an existing floor base at the time of renovation or the like will be described. If the heat insulation condition of the existing floor base is inferior to the standard heat insulation condition, the amount of heat released from the floor base will be large. Feeling of output). In that case, the contractor operates the DIP switch 33 as the first selection means, selects the energization rate table T1 in which the maximum output level LH is set highest, and performs the construction.

  After the construction, the user starts the same operation by turning on the ON-OFF switch 35 of the operation panel 31. However, in the start-up operation at the output of 100%, the maximum output level LH of the power supply rate table T1. Is set to 100%, and the heater 11 is operated with heat generation at the rated output, that is, 60 Wh output. Thereby, the start-up operation proceeds in a state higher by 9 Wh (= 60 Wh−51 Wh) than in the above case (in the case of the energization rate table T2). Therefore, even if the amount of heat radiation increases due to the heat insulation condition of the floor base, the user does not feel insufficient heating. This is the same in the steady operation, and when the user continues to select the selection switch 38a and selects the selection switch 38b which is the intermediate level LM, the energization rate is 60%, 36 Wh (60 W × 0. When the selection switch 38c which is the operation in 6) and the minimum level LL is selected, the operation at an energization rate of 20% and 12 Wh (60 Wh × 0.2) is continued. In either case, a higher output can be obtained than when the energization rate table T2 is selected.

  When this electric floor heating system is constructed in a place where the existing floor ground insulation condition is superior to the standard insulation condition, the amount of heat released from the floor foundation is reduced. The dip switch 33 that is the selection means is operated to select the energization rate table T3 in which the maximum output level LH is set to the lowest, and the construction is performed.

  In this case as well, the same operation is started when the user turns on the ON-OFF switch 35 of the operation panel 31. However, in the start-up operation at the output of 100%, the maximum output level of the power supply rate table T3. Since the energization rate PH corresponding to LH is set to 60%, the heater 11 is operated at 36 Wh output. In this case, the start-up operation proceeds in a state lower by 15 Wh (= 51 Wh−36 Wh) than the operation in the energization rate table T2, but since the amount of heat released from the floor base is suppressed, the user There will be no shortage of heating on the side. This is the same during steady operation. When the user selects the selection switch 38a, the state continues, and when the selection switch 38b of the intermediate level LM is selected, the energization rate is 36%, 21.6 Wh (36 Wh × When the selection switch 38c which is the operation at 0.6) and the minimum level LL is selected, the operation at the energization rate of 12% and 7.2 Wh (36 Wh × 0.2) is continued. In either case, the output is lower than when the energization rate table T2 is selected. However, since the heat insulation condition of the floor base is improved, the user side does not feel insufficient heating.

  As described above, in the electric floor heating system according to the present invention, at the time of construction, the controller 20 is set so as to meet the heat insulation condition of the floor foundation to be constructed, that is, the most suitable energization rate table is selected for the floor foundation. Thus, even if the floor ground conditions are different, the required floor heating environment can be provided to the user. Since it is not necessary to prepare line heaters with different outputs according to the heat insulation conditions of the floor base as in the past, the construction cost of the electric floor heating system can be significantly reduced. Also, inventory management of parts becomes easy.

Schematic which shows an example of the electric floor heating system by this invention. The block diagram which shows the control system of the whole electric floor heating system. The pulse waveform which shows the electricity supply rate control in an electric floor heating system. The figure which shows an example of the table used with the electric floor heating system by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Floor base | substrate, 11 ... Wire heater, 12 ... Wood type flooring, 13 ... Wiring, 20 ... Controller, 30 ... Control part, 31 ... Control panel, 33 ... Dip switch (1st selection means), 35 ... ON -OFF switch, 38a-38c ... floor heating level selection switch (second selection means), 40 ... storage unit, 50 ... drive circuit, 51 ... switching circuit, T1-T3 ... energization rate table

Claims (3)

An electric floor heating system including at least a wire heater that is a heat generation source and a controller that has at least a function of controlling an energization rate to the wire heater,
The controller is configured to select one of two or more energization rate tables and two or more energization rate tables for determining an energization rate to the line heater corresponding to two or more floor heating levels. And a second selection means for selecting one of the two or more floor heating levels, and a floor selected by the second selection means in the energization rate table selected by the first selection means An electric floor heating system comprising at least heater driving means for driving a line heater at an energization rate corresponding to a heating level.   The electric floor heating system according to claim 1, wherein the first selection means is a dip switch, and is attached at a position in the controller that is not easily accessible by a user in a normal use state.   The energization rate for each floor heating level in each energization rate table is such that the output ratio of the line heater between the floor heating levels of each stage selected by the second selection means is the same in all energization rate tables. The floor heating system according to claim 1, wherein the floor heating system is set as follows.

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