JP2001147023A - Method for controlling thermal storage heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To determine a conduction time without measuring the outdoor air temperature by calculating a required heat storage capacity interlocked with variation of environmental load. SOLUTION: In the control method for a thermal storage heater comprising a heat storage body 1, and a sensor 5 for measuring the temperature of the heat storage body 1 where heat generated by conducting the heat storage body during a specified time band is stored in the heat storage body and radiated for heating, a required conduction time T is calculated according to a formula; T=T0+k*t0-2*k*t1 (k: correction coefficient) where, t1 is the temperature data of the heat storage body predetermined time before the specified time band expressed in terms of time, t0 is the temperature data of the heat storage body at the same time of previous day when the data is stored in a memory expressed in terms of time, and T0 is conduction time data of previous day. The heat storage body is conducted based on the calculation results.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a regenerative heating system.

[0002]

2. Description of the Related Art A regenerative floor heating apparatus stores heat in a heat storage material under the floor by energizing a heating element to generate heat during a predetermined time zone (usually a midnight power time zone) before starting to use a room. The heat stored outside the predetermined time period is released from the floor into the room to heat the room.

[0003] In the above-described apparatus which stores electricity by supplying electricity during a cheap midnight power time period, the supply of electricity to the heating element is cut off when the heat storage material reaches a predetermined temperature (target temperature), and the supply of electricity is reduced when the temperature of the heat storage material decreases to a predetermined temperature. In general, the operation to be restarted is performed only during the above-mentioned predetermined time period, so that supplementary heat storage cannot be performed outside the above-mentioned predetermined time period.

At this time, it is expected that the environmental load conditions such as the season and the climate are small, and that the heating element does not need to be energized during the midnight power time period (from 11:00 pm to 7:00 am). In such a case, an operation is performed in which a timer is used to secure a current supply time sufficient to obtain a heat storage amount that can secure floor heating performance.

And responding to environmental load fluctuations;
Conventionally, to improve the time prediction accuracy of energization time control while ensuring heating performance, sensors that measure the outside air temperature are conventionally installed outdoors, and predictions are made from past and current outside air temperature data and floor temperature change characteristic data. There has been proposed a method of controlling with a given energizing time.

[0006] As a simple energization time control, a method of operating with a set energization time corresponding to the date of the calendar function has been proposed.

[0007]

However, in the calendar system in which the energization time is determined according to the month and day, if the outside air temperature fluctuates suddenly or the temperature fluctuates out of season, excessive or insufficient heat storage may occur. . For this reason, the heat storage body temperature is high and the room becomes hot because the heat release amount decreases on warm winter days, and conversely, the heat storage body temperature decreases and the room becomes cold on the cold spring day etc. Invite.

In the case of the method of controlling the energization time by measuring the outside air temperature, it is necessary to arrange a sensor for measuring the outside air temperature from indoors to outdoors, and to perform complicated construction in consideration of waterproofing and the like. Required, labor and construction costs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to calculate a required heat storage amount in conjunction with a change in environmental load without energizing the outside air temperature without measuring the outside air temperature. It is an object of the present invention to provide a method for controlling a regenerative heating device capable of determining time.

[0010]

According to a first aspect of the present invention, there is provided a heat storage element, a temperature sensor for measuring a temperature of the heat storage element,
And a heat storage element that includes a heat generator and stores heat generated by energizing the heat generator in a predetermined time zone in the heat storage body, and performs heating by radiating the amount of heat stored in the heat storage body. Then, the time conversion data t1 of the heat storage element temperature at a certain time before the predetermined time zone, the time conversion data t0 of the heat storage element temperature at the same time of the previous day stored in the memory, and the energization time data T0 of the previous day are used. Then, the required power supply time T is calculated by the following prediction formula T = T0 + k * t0-2 * k * t1 (k: correction coefficient), and power is supplied to the heating element based on the calculation result. are doing. As the time conversion data here, a remaining time conversion value of the heat storage body residual heat amount in the heat storage type heating device can be used. The heat storage material of the heat storage element may be used exclusively or in combination with the sensible heat storage material and the latent heat storage material.

According to the first aspect of the present invention, since the necessary energizing time is calculated from the temperature information of the heat storage body and the energizing result information of the previous day by the above-mentioned prediction formula, the installation of the sensor of the heating device can be simplified. In addition, since the time conversion data of the heat storage body temperature for a predetermined time before a predetermined time zone is used, it is possible to control the energization time to ensure comfortable heating in accordance with a certain time.

The invention according to claim 2 is characterized in that the time conversion data t1L of the lowest temperature of the heat storage element other than the predetermined time zone and the time conversion data t1 of the lowest temperature of the heat storage element of the previous day stored in the memory.
Using 0L and the energizing time data T0 of the previous day, the necessary energizing time T is calculated by the following prediction formula T = T0 + k * t0-2 * k * t1L (k: correction coefficient), and based on the calculation result, It is characterized by energizing the heating element. Since the time conversion data of the minimum heat storage element temperature other than the predetermined time zone is used, high data of the heat storage element temperature information generated due to temporary insulation can be ignored, and the environment such as season and climate can be ignored. Information most linked to the load can be obtained. As a result, the accuracy of predicting the required power-on time can be improved, and comfortable heating can be achieved.

A third aspect of the present invention is characterized in that k = 1 is used as the correction coefficient k in the above-mentioned prediction equation. When controlling the energization time to the heating element in conjunction with the environmental load within a predetermined time zone, the number of hours (length) of energizing the heating element determines the amount of heat stored in the heat storage element necessary for heating to the heating device. The amount of heat supplied is the sum of the amount of heat dissipated during the energization time, and the amount of heat supplied is the same as the heating resistance of a general resistance heater wire. Electric power obtained by multiplying the number (length) by the installed capacity (rated power) of the heating element is the amount of heat. That is, the reason why the correction coefficient k in the above-mentioned prediction formula becomes k = 1 is when the amount of heat supplied for the number of hours (length) of energizing the heating element is uniquely determined by the installed capacity of the regenerative heating device. In particular, it is effective for a heat storage type heating device using a sensible heat storage material or a floor heating device having a high laying rate, and the accuracy of predicting a required energization time linked to an environmental load is improved, so that comfortable heating can be achieved. .

[0014] The invention of claim 4 is characterized in that k> 1 is used as the correction coefficient k in the above-mentioned prediction formula. When the heat storage element reaches a predetermined temperature (a target temperature at the time of completion of heat storage or a temperature for preventing the heat storage element and the heat generation element from rising excessively) by energizing the heat generation element, the heat generation element is turned on and off (ON-OFF) until the power supply is completed. Even if the number of hours (length) of energization for operation is the same, the amount of heat supplied, which is the sum of the amount of heat stored in the heat storage unit required for heating and the amount of heat released during energization to the heating device, depends on environmental conditions. Will be different. The reason why the correction coefficient k in the above-mentioned prediction formula is k> 1 is when the number of times (length) of supplying current to the heating element and the amount of supplied heat are not uniquely determined by the installed capacity of the regenerative heating device. In a regenerative heating device in which the correction coefficient k of the simple prediction formula is k> 1,
Prediction accuracy of required power supply time linked to environmental load is improved,
Comfortable heating can be achieved. In particular, it is effective for a heat storage material having a low heat storage temperature, and the heating device can be shared by only changing the correction coefficient of the arithmetic expression.

A fifth aspect of the present invention is characterized in that the regenerative heating device is a regenerative floor heating device. The regenerative floor heating device stores heat in a regenerator under the floor with a heating element before use, and releases the stored heat into the room from the floor when in use to heat the room. Therefore, the regenerator (latent heat / sensible heat storage) If you set the conditions of volume capacity), heating element (equipment capacity and ON-OFF operation), room structure (ceiling, underfloor, wall, etc.), indoor use condition (for example, opening and closing of windows and doors) and outside air temperature,
The relationship between the temperature of the heat storage unit and the room temperature after the passage of time can be obtained from the heating load calculation. Then, the temperature of the heat storage body at the time when the heat radiation ends (before the predetermined time zone) increases as the energization time to the heating element in the predetermined time zone increases, and increases in conjunction with the increase in the outside air temperature. In other words, by controlling the temperature of the heat storage body before the required time zone to a constant temperature, the energization time is short if the outside air temperature is high, and the energization time is long if the outside air temperature is low. The room temperature when the temperature of the heat storage body is constant increases under a constant room structure condition when the outside air temperature is high, but falls within the comfortable temperature range.

A sixth aspect of the present invention is characterized in that the target temperature of the heat storage body is changed according to the measured value of the room temperature. When the outside air temperature fluctuates suddenly before the predetermined time zone or during the energization time zone, the room temperature also fluctuates in conjunction with it.Therefore, if the room temperature is low, set the target temperature of the heat storage unit to be high, and if the room temperature is high, set it low. Thus, the required amount of supplied heat is ensured by adjusting the amount of supplied heat to the heat storage element separately from the amount of supplied heat during the calculated energization time.

According to a seventh aspect of the present invention, in the control method of the regenerative heating device according to the second aspect, when the heating element is energized for an arbitrary time Tn outside the predetermined time zone, the lowest heat storage outside the predetermined time zone. Using the time conversion data t1L of the body temperature and the energization time data T0 of the previous day, the necessary energization time T is calculated by the following prediction formula T = Tn + T0-2 * k * t1L (k: correction coefficient). It is characterized in that the heating element is energized based on the result. In a time period other than a predetermined time period (such as a time-based light contract), when the outside temperature suddenly decreases, heating may be ensured by energizing the heating element only for an arbitrary period of time. Since the body temperature rises due to the energization of the heating element, the temperature before the predetermined time period increases, so that the operation is performed so that the required energization time is shortened. By calculating the required energizing time by the above-described prediction formula that adds an arbitrary energizing time Tn, the energizing time is corrected.

The invention according to claim 8 is characterized in that time conversion data of the heat storage element temperature is provided for each heating capacity switching setting. As described above, the regenerative heating device needs to be operated while predicting the environmental load. However, since the thermal sensation of the person is different due to the housing structure and ease of use, a means for switching the heating capacity (preference setting) is provided. Will be kept. At this time, by providing the time conversion data of the heat storage element temperature for each setting of the heating capacity (preference), the heating capacity of the heat storage type heating device can be switched.

A ninth aspect of the present invention is characterized in that time conversion data of the heat storage element temperature is provided for each heat storage capacity of the heat storage element. Electricity is supplied to the heating element in a predetermined time zone and heat is stored in the heat storage element.However, in cold regions, it may not be possible to store the amount of heat required for heating by energizing in the predetermined time period. The use of heat storage materials with a large amount of heat storage and the laying ratio are being increased. Therefore, by providing the time conversion data of the heat storage element temperature in the controller that controls the required energization time for each heat storage capacity of the heat storage element, it is possible to easily cope with the specification in cold regions.

A tenth aspect of the present invention is characterized in that the calculated necessary energizing time data is compared with the energizing time set for each period of the measured calendar, and the larger energizing time is adopted. I have. When the heat storage element temperature becomes higher than expected due to a decrease in heat radiation from the heat storage element in the sensor part due to local insulation of the location where the temperature of the heat storage element is measured or heating of another heater such as an air conditioner Although the required power supply time is reduced and the heating power is reduced, the heating power can be prevented from being lowered because the required power supply time is set to be longer than a normally set minimum power supply time for each time period.

According to an eleventh aspect of the present invention, a plurality of temperature sensors for measuring the temperature of the heat storage element are dispersed and arranged, and the time conversion data of the temperature of the heat storage element is derived from the minimum measured value to calculate the energization time. It has special features. Even if the temperature of the heat storage element was measured incorrectly due to the local insulation of the location where the temperature of the heat storage element was measured or the combined use of a heater such as an air conditioner, multiple units were distributed. Employing the minimum temperature measurement value of the disposed temperature sensor can reduce erroneous detection.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment. The present invention is not limited to the following examples.

FIG. 1 shows the configuration of a regenerative heating system. It comprises a heat storage element 1, a heating element 2 that is a general resistance wire, a relay box 3 that is a switch for supplying power to the equipment capacity of the heating element 2, and a control controller 4. The heat storage body 1 mainly includes a sensible heat storage material, and the control controller 4 is equipped with a microcomputer (hereinafter, referred to as a microcomputer) for controlling an energization time according to a required amount of heat. The microcomputer is provided with circuits such as a heating element temperature detection process, an energization time control, a calendar time measurement process, a temperature / time conversion process, and a calculation process. A sensor 5 for measuring the temperature of the heat storage element 1 is provided near the heat storage element.

FIG. 2 shows temperature change data of the outside air temperature, the room temperature, and the temperature of the heat storage element in the standard construction from a predetermined time period of 23:00 to 7:00 of the next morning (a general midnight power time period of 8 hours). The temperature of the heat storage body is highest at 7 o'clock at the end of the predetermined time zone,
The heat is radiated outside the predetermined time zone in conjunction with the outside air temperature or the room temperature, and becomes lowest around 23:00 before the predetermined time zone when the power supply to the heating element is started. In the present invention, the residual heat amount of the heat storage body is estimated by measuring the temperature of the heat storage body a predetermined time before the predetermined time zone (for example, 23:01).

When the construction and structural conditions of the room are constant, the relationship between the heat storage body temperature and the heat storage body residual heat amount (mainly sensible heat) linked to the environmental load condition of the outside air temperature is as shown in FIG. Since it is determined unambiguously by the amount of heat the body has, the amount of heat remaining in the heat storage unit is kept constant, and the amount of heat supplied from the previous day and the amount of heat stored the previous day are assumed, assuming that the amount of heat radiated from the external environmental load today will be the same amount of heat next day From the body residual heat and today's heat storage body residual heat,
Calculate the current supply heat quantity.

The heat radiation amount of the environmental load of the day is a value obtained by subtracting the heat storage body residual heat amount q1 of the present day from the sum of the heat storage body residual heat amount q0 of the previous day and the energized supply heat amount Q0 of the previous day. Further, today's energized supply heat amount Q1 can be obtained by subtracting today's heat storage body residual heat amount q1 from the next day's environmental load heat release amount (today's environmental load heat release amount). Therefore, (current supply heat quantity Q1 of today) = (current supply heat quantity Q0 of the previous day) + (heat storage body residual heat quantity q0 of the previous day) -2.
* (Today's heat storage body residual heat amount q1), and Q1 = Q0 + q0-2 * q1 It is possible to predict the energized supply heat amount Q1 of today.

FIG. 4 shows an operation diagram when the environmental load of the outside air temperature fluctuates. As can be seen from FIG. 4, when the environmental load fluctuates, the supplied heat also fluctuates, and the amount of heat is controlled so that the temperature of the heat storage body on the next day becomes constant.

In order to set the energizing supply heat amount by the energizing time,
This is performed in consideration of the heater resistance characteristics of the heating element. However, in the case of a general heater wire, it is uniquely determined from the relationship between the calorific value and the electric power (equipment capacity of the heating element). In addition, in order to set the heat storage body residual heat amount as a remaining time, which is a time function, the heat storage body heat amount can be supplied by converting the amount of heat that can be supplied by the heating device to the time during which electricity can be supplied during the time period. This conversion value is mainly determined by the characteristics of the heat storage unit and the target setting of the heating device. Targeting a heating system that can secure a room temperature of 18 degrees Celsius before 23:01 in winter (at this time, the temperature of the regenerator is 50
Table 1 shows the relationship between the temperature of the heat storage body and the residual heat amount time when the temperature is set to (equivalent to degrees).

[0029]

[Table 1]

In Table 1, the remaining time is allocated in units of 0.25 hours (15 minutes). Although it is possible to finely assign in units of minutes, it is reduced in consideration of the microcomputer capacity and the large amount of calculation confirmation evaluation.

From the above, the time converted data of the heat storage element temperature at a certain time before the predetermined time zone is t1, the time converted data of the heat storage element temperature at the same time of the previous day stored in the memory is t0, and the energization of the previous day is performed. Time data is T0, required energization time is T
Then, an expression obtained by time-replacement of the above-described prediction expression is as follows: T = T0 + t0−2 * t1. This equation is obtained by substituting the above-described energization time and remaining time.

FIG. 5 shows an example of the power supply operation state in which the required power supply time is calculated and the power supply start time is set. Based on the measured temperature of the heat storage material at the time before the predetermined time zone (prior to 23:00), the heat storage material remaining heat amount time of the present day is determined from the above-described allocation table (Table 1). Based on the information of the previous day (remaining heat amount of heat storage body and energization time as supply heat amount) stored in the microcomputer and the remaining heat amount time of heat storage body of the day, the energization time as today's supply heat amount is calculated by a prediction formula. The energization start time is set by shifting the time obtained by subtracting the energization time from the energization time zone (8 hours) from the energization time zone start time. When the time timer operates and the above-mentioned time is reached, energization to the heating element is started and energization is stopped at a predetermined time zone completion time (7:00 am). When the heat storage body temperature information at 12:00 before 23:00, that is, at 22:00, is used, the temperature at 22:00 is managed. Therefore, comfortable heating can be ensured at a set time before a predetermined time in a predetermined time zone.

By the way, other than the predetermined time zone (from 7:00 to 2
When the temperature of the heat storage element is measured at 3 o'clock), the temperature of the heat storage element gradually decreases because the heat storage element is radiated in accordance with the ambient temperature environmental load. Can be A in FIG. 6 shows a case in which a power contract is made for each time zone, and the heating element can be energized for an arbitrary time outside a predetermined time zone. You can drive after the room temperature suddenly drops and it is cold, but the electricity bill is set higher than usual. Depending on the time of the driving operation, the temperature of the heat storage body may be higher than the normal temperature with respect to the temperature a predetermined time before the predetermined time zone. B in FIG. 6 is a case where the sensor installation location for measuring the temperature of the heat storage body is insulated,
The temperature is rising due to the heat. In any case, based on the temperature of a predetermined time period before the predetermined time zone, it is determined that the heat storage residual heat amount is large, so that the calculated required energization time will be short, The power supply time prediction accuracy is inferior.

In order to deal with these points, instead of using the temperature of the heat storage body a predetermined time before the predetermined time zone, the time conversion data t1L of the lowest temperature of the heat storage body other than the predetermined time zone is used.
Using the time conversion data t0L of the heat storage body minimum temperature of the previous day stored in the memory and the power supply time data T0 of the previous day, the required power supply time T is calculated as follows: T = T0 + k * t0-2 * k * t1L (k: It is only necessary to calculate the current value by using the correction coefficient, and to energize the heating element based on the calculation result.

The correction coefficient k becomes k = 1 when the amount of heat supplied for the number of hours (length) of energizing the heating element is uniquely determined by the installed capacity of the regenerative heating device. is there. FIG. 7 shows the relationship between the number of hours to supply power to the heating element of a general resistance heater wire and the amount of heat supplied in the heating device using the sensible heat storage material having the configuration described in the first example. As can be seen from FIG. 7, the number of energization times is directly proportional to the amount of heat generation (power consumption). The heating efficiency of the installed capacity of the heating element is about 100% (k = 1), though slightly changed by the heater temperature characteristics. In the case of the above-mentioned relationship, the necessary energization time is calculated using the prediction formula of k = 1. Table 1 is used for the remaining time allocation.

The correction coefficient k becomes k> 1 when the number of hours for energizing the heating element and the amount of supplied heat are not uniquely determined by the installed capacity of the regenerative heating device, and as described in the first example. In a heating device using a sensible heat storage material having a configuration, if a heat storage body reaches a predetermined temperature (a target temperature at the time of completion of heat storage or a temperature at which the heat storage body and the heating element are prevented from excessively rising) by energization, a predetermined time period is set. Turn on / off the heating element until it ends (ON-OF
F) In operation, FIG. 8 shows the relationship between the number of hours for energizing the heating element and the amount of heat supplied. As can be seen from FIG. 8, the number of energization hours is not directly proportional to the amount of heat generation (power consumption). When the number of energization hours increases, the heat generation efficiency of the equipment capacity of the heating element deteriorates, and from 4 hours to 8 hours About 50% (k = 2)
It has become. This is because the heat storage body appears remarkably in a construction state in which there is unevenness in heat storage, and even when the heat storage body reaches a predetermined temperature, the temperature of the heat storage body other than the temperature measurement point has not yet risen.
Even if the equipment capacity of the heating device is sufficient, it will change apparently in the construction state.

In the case of the above-mentioned relationship, the required energization time is calculated using the prediction equation of k = 2. Table 2 shows a table in which the remaining time is doubled and assigned in advance to share the formula. By making such corrections, the accuracy of predicting the required energization time linked to the environmental load is improved, and comfortable heating can be performed.

[0038]

[Table 2]

FIG. 9 shows a case in which the regenerative heating device is an electric floor heating device. The regenerator 1 is formed as a regenerative board installed below the wooden floor 7. FIG. 10 shows temperature change data of the outside air temperature, the room temperature, the floor surface temperature, and the regenerator temperature in the standard construction from a predetermined time period of 23:00 to 7:00 of the next morning (general midnight power time period of 8 hours). The heat storage body temperature is highest at 7:00 after the end of the predetermined time zone, and is radiated outside the time zone in conjunction with the outside air temperature or the room temperature. During the period from 9:00 to 16:00, the latent heat of the heat storage body is mainly used. This is heat radiation, and the heat radiation for the sensible heat increases after 16:00. It becomes the lowest around 23:00 before the energization time period when the heat radiation for the sensible heat increases. Therefore, the energization time can be predicted based on the same idea as in the first example.

When the construction and structural conditions of the room are constant, the relationship between the heat storage body temperature and the heat storage body residual heat amount (including latent heat and sensible heat) linked to the environmental load condition of the outside air temperature is as shown in FIG. Is uniquely determined by the amount of heat it has.

The setting of the necessary energizing time and the remaining time of the heat storage body were performed, and the room temperature at 23:01 before winter was set to 18 degrees and the floor temperature was set to 23 degrees.
Table 3 shows the relationship between the heat storage element temperature and the residual heat amount time when the heating device capable of securing the temperature is set as the target (the heat storage element temperature at this time is equivalent to 37 degrees). Table 3 shows k = 1.8.

[0042]

[Table 3]

FIG. 12 shows an energization operation state in which the necessary energization time is calculated and the energization start time is set. Based on the measured temperature of the heat storage material at the time before the predetermined time zone (before 23:00), the heat storage material residual heat amount time of the present day is determined from the allocation table of Table 3. The required energization time, which is the amount of heat to be supplied today, is calculated from the information of the previous day (remaining heat amount of the heat storage body and the energization time, which is the amount of heat supplied) stored in the microcomputer and the required amount of energization time, which is the amount of heat supplied today. The energization start time is set by shifting the time obtained by subtracting the required energization time from the predetermined time zone (8 hours) from the energization time zone start time. When the time timer operates and the above time is reached, energization of the heating element is started, and the energization is stopped at a predetermined time zone completion time.

A room temperature sensor for measuring the room temperature may be provided. In this case, as shown in FIG. 13, if the room temperature is equal to or higher than a predetermined temperature (for example, 18 ° C.), the target temperature of the heat storage body (heating element) The upper limit temperature T00) is lowered, and conversely, if the room temperature is equal to or lower than a predetermined temperature, the target temperature of the heat storage body (heater upper limit temperature T01) may be increased.

By doing so, even if the outside air temperature fluctuates suddenly before the predetermined time zone or during the energization time zone, the amount of heat stored in the heat storage body is adjusted according to the interlockingly changing room temperature. Become. For example, when the room temperature rises, the amount of heat stored in the heat storage body is suppressed. The amount of heat stored is controlled according to the room temperature. Here, the two-stage temperature switching has been described, but more control is possible by increasing the number of stages.

If the outside temperature suddenly drops due to the passage of a cold front or the like, the amount of heat radiated from the heat storage unit increases and becomes lower than proper heating. May also feel cold and low. At this time, if the lighting is contracted by time zone, it is possible to energize even outside the contract time (midnight power time zone), so if the energization is performed before a predetermined time zone, it is possible to cover a decrease in room temperature. However, when the power is supplied, the temperature immediately before the contract time does not become the minimum temperature. Therefore, as described above, the temperature of the heat storage body other than the predetermined time period is not based on the temperature of the predetermined time period before the predetermined time period. It is preferable to switch to prediction based on This can be dealt with by recording whether or not the vehicle has been operated outside a predetermined time period (contract time period) and performing the above-described switching based on the result as shown in FIG. In addition, let the remaining heat amount time yesterday be 0 hour.

It is also preferable that the heating capacity can be switched, and this can be switched by the user's button operation ("standard", "high", "low" shown in FIG. 18), and the heat storage target at the night start time can be changed. This can be coped with by allowing the temperature to be switched. For example,
In the case of “standard”, when the temperature of the regenerator at the start of the predetermined time zone is 37 ° C., the residual heat amount time is set to 0 hour. In the case of “high”, the temperature of the regenerator at the start of the predetermined time zone is 42 hours. At 0 ° C., the residual heat amount time is set to 0 hour, and when “low”, the residual heat amount time is set to 0 hour when the heat storage body temperature at the start of the predetermined time zone is 32 ° C.

The heating capacity can be adjusted by adjusting the heat storage amount by performing the control for changing the target value of the heat storage body temperature before the energization start time zone by such a setting, so that the heating capacity can be adjusted. It is possible to adjust the heating capacity according to the structure.

In the case of the regenerative floor heating, the regenerator may be changed depending on the use environment to make it a warm district specification or a cold district specification. In the cold district specification, the environmental load is greater than in the warm district specification. Therefore, the heating capacity is secured by increasing the volume of the heat storage body to increase the amount of heat storage. As shown in FIG. 16, a plurality of time conversion tables are provided according to the type of the heat storage element so that appropriate control can be performed even when the heat storage element is changed. The time conversion table may be switched depending on the type.

Furthermore, when a cushion or the like is placed on the floor on which a sensor for measuring the temperature of the heat storage element is installed, the heat storage element in the sensor section is less likely to radiate heat because of thermal insulation. In addition, when an air conditioner or the like is used in combination, the room temperature increases and the heat storage body is less likely to radiate heat. If the temperature remains high without the heat dissipation of the heat storage body proceeding in this way, it is determined that there is a residual heat storage amount, and the next required energization time is shorter than the originally appropriate time, As a result, the next day the heating capacity will be insufficient.

This point can be dealt with as follows. FIG. 17 shows an example of a coping example. Here, the lower limit value Tc of the required power supply time is set for each month from January to December in the calendar, and the required power supply time T calculated by calculation and the lower limit value Tc of the month are set. Are compared with each other, and the larger time is employed to energize.
The lower limit value Tc determined for each month may be determined by calculating the required power supply time based on the monthly average temperature. Further, in this example, the lower limit value Tc is set every month, but this may be set every week or every day.

To cope with the above problem, as shown in FIG.
Two sensors are installed in the room to measure the temperature of the regenerator,
The heat storage element temperature used in the calculation can be determined by adopting the lower one of the data obtained from the two sensors.

[0053]

As described above, according to the first and second aspects of the present invention, the setting of the energizing time according to the environmental load change is performed only by the information from the temperature sensor for measuring the temperature of the heat storage element. It is possible to reduce running costs and to perform optimal heating control, and as a heating device, it is not necessary to measure the outside air temperature, so it is necessary to reduce the construction work. can do. In addition, according to the first aspect of the present invention, since the time conversion data of the temperature of the heat storage element is used a predetermined time before the predetermined time zone, the energization time control that ensures comfortable heating at a certain time can be performed. According to the second aspect of the present invention, since the time conversion data of the minimum heat storage element temperature other than the predetermined time zone is used, high data of the heat storage element temperature information generated due to temporary heat insulation is ignored. As a result, it is possible to obtain information most linked to the environmental load such as the season and the climate. As a result, the accuracy of predicting the required power-on time is improved, and comfortable heating can be achieved.

According to the third aspect of the present invention, since k = 1 is used as the correction coefficient k in the above-mentioned prediction equation, the amount of heat supplied for the number of hours (length) of energizing the heating element is determined by the installed capacity of the regenerative heating apparatus. In the case where it is determined uniquely, especially in a regenerative heating system using a sensible heat storage material or a floor heating system with a high laying ratio, the accuracy of predicting the required energization time linked to the environmental load is improved, and comfortable heating is achieved. It can be.

According to the fourth aspect of the present invention, since k> 1 is used as the correction coefficient k in the above-mentioned prediction equation, the number of hours (length) of energizing the heating element and the amount of heat supplied are determined by the installed capacity of the regenerative heating apparatus. If it is not uniquely determined, the accuracy of predicting the required power supply time linked to the environmental load is improved, and comfortable heating can be achieved.

According to a fifth aspect of the present invention, in the regenerative heating system, the heat storage element (latent heat / sensible heat storage capacity) and the heat generator (equipment capacity or O
N-OFF operation), room structure (ceiling, underfloor, wall, etc.), indoor use condition (for example, opening and closing of windows and doors), and conditions of outside air temperature are set. Is a regenerative floor heating device that can obtain the relationship from the heating load calculation, so that accurate control can be performed.

According to the sixth aspect of the present invention, since the target temperature of the heat storage is changed in accordance with the measured value of the room temperature, the amount of heat supplied to the heat storage is adjusted separately from the amount of heat supplied during the calculated energization time. As a result, the required heat supply can be secured.

According to a seventh aspect of the present invention, in the control method of the regenerative heating system according to the second aspect, when the heating element is energized for an arbitrary time Tn outside the predetermined time zone, the lowest heat storage outside the predetermined time zone. Using the time conversion data t1L of the body temperature and the energization time data T0 of the previous day, the necessary energization time T is calculated by the following prediction formula T = Tn + T0-2 * k * t1L (k: correction coefficient). Because the heating element is energized based on the results, it can be used for a specific time period (such as time-based lighting contracts).
In a time zone other than the above, even if the heating element is energized for an arbitrary time because the outside air temperature suddenly decreases, the energization time is corrected, so that accurate control can be performed.

According to the eighth aspect of the present invention, since the time conversion data of the heat storage body temperature is provided for each heating capacity switching setting,
It is possible to respond to the switching of the heating capacity (preference setting) corresponding to the difference in the thermal sensation of the person due to the housing structure and convenience.

According to the ninth aspect of the present invention, since the time conversion data of the heat storage element temperature is provided for each heat storage capacity of the heat storage element,
It is easy to respond to cold district specifications.

According to a tenth aspect of the present invention, the calculated required energizing time data is compared with the energized time set for each period of the measured calendar, and the larger energized time is employed. Even if the temperature of the heat storage unit becomes higher than expected due to the local insulation of the location where the temperature is being measured and the heat release from the heat storage unit in the sensor part due to the heating of other heaters such as air conditioners, the heating is also performed. The ability is not reduced.

According to an eleventh aspect of the present invention, a plurality of temperature sensors for measuring the temperature of the heat storage element are dispersed and arranged, and the time conversion data of the temperature of the heat storage element is derived from the minimum measured value to calculate the energization time. Therefore, even in this case, even when the temperature of the heat storage unit becomes higher than expected due to the local insulation of a portion where the temperature of the heat storage unit is being measured or the combined use of a heater such as an air conditioner, there is a risk of erroneous control. Can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing changes in an outside air temperature, a room temperature, and a heat storage body temperature.

FIG. 3 is an explanatory diagram of a relationship between a heat storage body temperature and a heat storage body remaining amount (remaining heat amount).

FIG. 4 is an explanatory diagram of an operation transition due to a change in outside air temperature.

FIG. 5 is an explanatory diagram of an example of an operation based on control according to the present invention.

FIG. 6 is an explanatory diagram showing an example of a temperature change of a heat storage body.

FIG. 7 is an explanatory diagram of a relationship (where k = 1) between the number of energizing hours and the number of time replacements of supplied heat (electric power).

FIG. 8 is an explanatory diagram of a relationship (where k = 2) between the number of energizing hours and the number of time replacements of supplied heat (electric power).

FIG. 9 is a block diagram in the case of a floor heating device.

FIG. 10 is an explanatory diagram showing changes in outside air temperature, room temperature, floor surface temperature, and heat storage body temperature.

FIG. 11 is an explanatory diagram of a relationship between a heat storage body temperature and a heat storage body remaining amount (remaining heat amount).

FIG. 12 is an explanatory diagram of an example of an operation based on control according to the present invention.

FIG. 13 is a flowchart illustrating an example of control.

FIG. 14 is a flowchart of another example of control.

FIG. 15 is a flowchart of still another example of control.

FIG. 16 is a flowchart of another example of control.

FIG. 17 is a flowchart of yet another example of control.

FIG. 18 is a flowchart of another example of control.

[Explanation of symbols]

 Reference Signs List 1 heat storage element 2 heating element 5 sensor

Claims (11)

[Claims] 1. A heat storage element, comprising: a temperature sensor for measuring the temperature of the heat storage element; and a heating element, wherein heat generated by energizing the heating element during a predetermined time period is stored in the heat storage element, and the heat storage element is provided. A method of controlling a regenerative heating device that performs heating by radiating the amount of heat stored in a body, comprising the time conversion data t1 of the temperature of a regenerator before a predetermined time in a predetermined time zone and the same as the previous day stored in the memory. Using the time conversion data t0 of the heat storage body temperature at the time and the energization time data T0 of the previous day, the necessary energization time T is calculated by the following prediction formula T = T0 + k * t0-2 * k * t1 (k: correction coefficient) A method for controlling a regenerative heating device, comprising calculating and energizing a heating element based on a result of the calculation. 2. A heat storage element, a temperature sensor for measuring the temperature of the heat storage element, and a heating element, wherein heat generated by energizing the heating element during a predetermined time period is stored in the heat storage element, and the heat storage element is provided. A method of controlling a regenerative heating device that performs heating by radiating the amount of heat stored in a body, comprising: a time conversion data t1L of a regenerator minimum temperature other than a predetermined time zone; Using the time conversion data t0L of the temperature and the energization time data T0 of the previous day, the necessary energization time T is calculated by the following prediction formula T = T0 + k * t0-2 * k * t1L (k: correction coefficient). A method for controlling a regenerative heating device, comprising: energizing a heating element based on a calculation result. 3. The method according to claim 1, wherein the correction coefficient k is set to k = 1. 4. The control method for a regenerative heating device according to claim 1, wherein the correction coefficient k is k> 1. 5. The control method for a regenerative heating device according to claim 1, wherein the regenerative heating device is a regenerative floor heating device. 6. The control method according to claim 1, wherein the target temperature value of the heat storage unit is changed according to the measured value of the room temperature. 7. When the heating element is energized for an arbitrary time Tn outside the predetermined time zone, the time conversion data t1L of the lowest heat storage element temperature outside the predetermined time zone and the energization time data T
Using 0, the required energization time T is calculated by the following prediction formula T = Tn + T0-2 * k * t1L (k: correction coefficient), and energization of the heating element is performed based on the calculation result. The method for controlling a regenerative heating device according to claim 2. 8. The method according to claim 1, wherein time conversion data of the heat storage element temperature is provided for each heating capacity switching setting.
Or the control method of the regenerative heating device according to 2. 9. The method according to claim 1, wherein time conversion data of the temperature of the heat storage element is provided for each heat storage capacity of the heat storage element.
Or the control method of the regenerative heating device according to 2. 10. The method according to claim 1, wherein the calculated necessary energizing time data is compared with the energizing time set for each period of the measured calendar, and the larger energizing time is adopted. A method for controlling a regenerative heating device. 11. A plurality of temperature sensors for measuring the temperature of a heat storage element are dispersed and arranged, and a time conversion data of the temperature of the heat storage element is derived from a minimum measured value to calculate an energization time. The method for controlling a regenerative heating device according to claim 1.