JPH08303799A - Floor heater - Google Patents

Abstract

PURPOSE: To enable raising of a room temperature up to a set temperature at desired time by controlling a heat source unit according to a combustion value necessary for reaching set conditions and an operation start time based on 'ease of warming index' judged from the temperature of a floor surface stored in time series and a consumed heating value of the heat source unit and the temperature of the floor surface. CONSTITUTION: An arithmetic section 8 determines an 'ease of warming index' from a conversion table of a memory section 6 based on a rise in temperature from the start of the operation of a floor surface as detected by a floor surface temperature detector 10 and a combustion value of a gas burner. The arithmetic section 8 further reads the 'ease of warming index' out of the memory section 6 and computes a combustion value of the gas burner necessary for raising the temperature of the floor surface up to a set temperature at set time inputted, that is, working contents and the time of staring operation involved. A control section 4 processes an input value from an input part 13 and a detection signal or the like from the floor surface temperature detector 10 or the like while adjusting an adjusting value 27 or the like based on the working contents sent from the arithmetic section 8 to control a floor heater.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating system, and more particularly to a floor heating system with improved control at the time of starting operation.

[0002]

2. Description of the Related Art A floor heating system in which hot water is passed under the floor to heat the interior of the room from the floor is a heating system that has been drawing attention in recent years from the standpoint of obtaining comfortable heating.

A schematic structure of the floor heating system is shown in FIG. FIG.
As shown in FIG. 2, the floor heating system 1 includes a heat source device 20 installed outside the room 60 and a hot water mat 2 arranged under the floor in the room 60.
2 and the like, hot water is sent from the heat source device 20 to the hot water mat 22 through the conduction pipe 24, and the hot water is circulated under the floor to heat the room to a desired temperature. Then, the cooled hot water is returned to the heat source device 20 through the conduction pipe 24, is appropriately heated, and is again sent to the hot water mat 22.

As described above, the floor heating apparatus 1 sends the heat generated by the heat source unit 20 to the underfloor through the hot water through the conduction pipe 24 and the hot water mat 22 to heat the room 60, so that comfortable heating can be achieved. On the other hand, when the operation of the floor heating device 1 is started, the conduction pipe 24, the hot water mat 22, the heat source device 20 are obtained.
Because all the water held inside is cold,
Need time to warm these up. Therefore, conventionally, the floor heating system 1 is started, for example, one hour before the desired heating time so that the room is warmed at the desired time.
Further, at the time of start-up, the gas burner of the heat source device 20 is operated at the maximum capacity to raise the temperature in the conduction pipe 24 and the hot water mat 22 at an early stage. It was kept at the set temperature.

In this way, the indoor temperature is kept at a predetermined temperature when a person is indoors.

[0006]

However, when the heating operation is always started earlier than the desired heating time by a fixed time, the time when the indoor temperature actually reaches the set temperature due to the outside air temperature and other conditions. There may be a time difference from the set desired heating time. In other words, if the room temperature is relatively high, such as when the outside air temperature is relatively high, the room temperature can be raised early by starting heating, while if the room temperature is difficult to warm, the temperature does not rise even if the heating operation is started. , It will take time to warm up. Therefore, if a room without people is warmed for a long time and useless heating energy is used, or when the time from the operation start time to the desired heating time is short, or the capacity of the heat source device is reduced, The room temperature sometimes did not rise to the desired temperature by the set time.

Further, in response to these, the rise of the floor heating system is predicted by using the outside temperature of the next morning as a guide, and for the heating operation of the next morning, the operation start time and the operation capacity are changed and input again. It is troublesome and very inconvenient.

[0008]

Therefore, in the present invention, the above-mentioned problems are solved and proper control is performed at the start of operation.
The floor heating device was configured as follows in order to raise the room temperature to the set temperature at a desired time.

That is, in a floor heating device in which a hot water conducting pipe is arranged under the floor and hot water heated by a heat source machine is passed through the conducting pipe to heat the room from the floor surface, the floor surface temperature for measuring the temperature of the floor surface is measured. Detecting means, storage means for storing the floor surface temperature detected by the floor surface temperature detecting means in time series, and "easy to warm up" of the floor surface based on the floor surface temperature stored in the storage means and the heat consumption of the heat source device. Determination unit that determines the "Sa index",
The storage unit that stores the "warmth easiness index" determined by the determination unit, the input unit that allows the user to input the set time and the set temperature, the "warmth easiness index" that is stored in the storage unit, and the floor. Based on the floor surface temperature detected by the surface temperature detection means, a calculation means for calculating the combustion amount and the operation start time required to reach the setting conditions input by the user,
The floor heating device is configured to include a control unit that controls the heat source unit according to the operation start condition calculated by the calculation unit.

Further, the temperature detection is based on the room temperature.

[0011]

When the floor heating device starts operating, the heat source device, the pump, etc. are activated, and hot water is passed through the pipe provided under the floor to warm the floor surface. The floor surface temperature detector detects the temperature of the floor surface and sends the detected value to the computing means. The calculating means calculates the "warmability index" of the floor from the temperature rise of the floor detected by the temperature detector and the energy consumption of the heat source device, and the control device uses the "warmability index". Controls the rise of the floor heating system. The calculated "warmth easiness index" is stored in the storage unit together with various conditions such as the outside temperature at that time.

When the operation of the floor heating device is started after the "warmth easiness index" is stored, the desired heating time, the set temperature, and the detected outside temperature (the outside temperature at a time close to the set time are input. ) Etc. and the stored "warmness index" of the floor surface, etc. are used to calculate the operating conditions for raising the temperature to the set temperature in accordance with the desired time,
The control device operates the heat source machine according to the calculated condition.

More specifically, the outside temperature is measured at the time when the set time is approached, and the difference between the outside temperature and the set temperature is calculated.
Based on this temperature difference and the "heatability index," the amount of combustion in the heat source machine to raise the temperature to the set temperature and the time required from the start of operation to the set temperature are calculated. The amount of combustion in the heat source machine is required to satisfy the condition that there is no waste in combustion efficiency and heat exchange. Then, when the time required to raise the temperature to the set temperature and the remaining time until the desired heating time become equal, the operation of the floor heating device is started.

Therefore, the floor surface temperature can be set to a desired temperature at the input time, and reliable temperature control can be performed with high operating efficiency.

Similarly, not the floor temperature but the room temperature can be measured and the control can be performed based on the room temperature.

[0016]

EXAMPLE An example of a floor heating system according to the present invention will be described.

As shown in FIG. 3, in the floor heating system 1, the heat source device 20 is installed outdoors as in the conventional example, and hot water heated by the heat source device 20 is passed through the hot water mat 22 provided inside the room. The interior 60 is heated. Also, the heat source unit 2
In addition to the warm water mat 22, 0 is connected to an air conditioner 50, a hot water supply device 52, an automatic bath 54, etc. provided in the room 60.

FIG. 1 shows the configuration of the floor heating system 1. The heat source device 20 has a gas burner 21 inside, a regulating valve 27 for regulating the gas supply amount of the gas burner 21, and a gas burner 21.
It is composed of a heat exchanger 25 which is heated by, a pump 23 which feeds a heat medium (hot water) under pressure, a control device 2 which controls the overall operation, and the like.

The adjusting valve 27 is connected to the control device 2 and adjusts the amount of gas supplied to the gas burner 21 according to an instruction from the control device 2. The pump 23 operates when the operation of the floor heating device 1 is started, and circulates hot water in the pipe. A low temperature side branch having a low temperature side hot water meter 32 is provided on the downstream side of the pump 23, and one pipe is connected to the heat exchanger 25 and the other pipe is connected to the low temperature header 30 by this branch. There is. The heat exchanger 25 is heated by the gas burner 21 to heat the water in the pipe. The pipe from the heat exchanger 25 is connected to the high-temperature header 34, and is branched at the high-temperature side branch portion provided with the high-temperature side hot water meter 33, and the branched one pipe extends from the pump 23 to the return header 38. It is connected to the suction pipe 37.

The high temperature header 34 is a connecting portion for connecting a hot water pipe for high temperature, and a pipe leading to the air conditioner 50 or the like via a control valve (not shown) is connected. The low-temperature header 30 is a connection part for connecting a hot-water pipe for low temperature, and the pipe 24 extending to the hot-water mat 22 is connected via each control valve 16. The return header 38 is connected to the suction side of the pump 23 via the suction pipe 37 as described above, and is connected to the return pipe 24 from the warm water mat 22, the air conditioner 50, and the like.

The warm water mat 22 is made of foamed resin or the like, and a resin warm water conducting pipe is meandered inside and the front and back surfaces thereof are covered with aluminum or the like. It is installed under the floor of 60 as appropriate.
The control valve 16 is a valve that opens and closes the pipe 24, and is opened and closed according to an instruction from the control device 2.

In the room 60 in which the warm water mat 22 is installed,
Controller 14 is attached, controller 14
The signal line 15 is connected to the control device 2 of the heat source device 20. The controller 14 is provided with an input unit 13 for inputting a desired set temperature, heating time, etc., a floor surface temperature detector 10 for detecting the temperature of the floor surface, and a room temperature detector 12 for detecting the indoor temperature. There is.

Next, the control device 2 will be described. As shown in FIG. 2, the control device 2 includes a control unit 4, a storage unit 6, and
The controller 4 includes a floor temperature detector 10 of the controller 14, an input unit 13, and the control valve 1.
6, the pump 23, the regulating valve 27 of the gas burner 21, etc. are connected.

First of all, as the control device 2, the "warmness index" after the start of operation is calculated, the floor heating device 1 is controlled by the calculated "warmability index", and the "warmability index" is calculated. Second, based on the stored "warminess index", the operation contents and operation start time are calculated so as to reach the set temperature at the preset set time, and then calculated. It has the function of operating the floor heating system under different operating conditions.

When the storage unit 6 is connected to the control unit 4 and stores the conversion table shown in FIG. 4 and the operation contents shown in FIG. 5, the "warm-up easiness index" thus obtained is sequentially obtained. Memorize with various conditions. The conversion table is a table for obtaining the easiness of warming of the floor heating device 1, that is, the "warmth easiness index" of the floor based on the rising temperature of the floor for 10 minutes and the operating capacity of the heat source device 20. The operation content shown in FIG. 5 is a table for determining the operation content of the floor heating device 1, that is, the rising control, based on the “warmth easiness index” and the temperature difference from the floor surface temperature at present to the set temperature.

The operation unit 8 confirms whether or not the "warmth easiness index" is already stored in the storage unit 6, and if it is not stored, the operation of the floor surface detected by the floor surface temperature detector 10 is started. From the conversion table of the storage unit 6, the “warm-up easiness index” is obtained based on the temperature increase from the above and the combustion amount in the gas burner 21. The “warmth easiness index” is stored in the storage unit 6 together with various conditions such as the outside air temperature at the time of determination. Further, the calculation unit 8 reads the operation content stored in the storage unit 6 based on the “warmth easiness index” and the set temperature input from the input unit 13, and sends the obtained operation content to the control unit 4.

Further, when the storage unit 6 has already stored the "warmth easiness index", the arithmetic unit 8 reads the "warmth easiness index" from the storage unit 6 when newly starting the operation, The combustion amount of the gas burner 21 required to raise the floor surface temperature to the set temperature at the input set time, that is, the operation content and the operation start time at that time are calculated. That is, since the "warmth easiness index" of the floor surface is stored in the storage unit 6, in order to raise the floor surface temperature from the current temperature to the set temperature, how much the gas burner 21 is burned and how much is burned. It may be continued for a certain period of time, but it can be calculated from the "warmth easiness index". Therefore, the operation start time can be determined by back-calculating the required time obtained.

The control unit 4 processes the input value from the input unit 13, the detection signal from the floor temperature detector 10 and the like, and based on the operation contents sent from the arithmetic unit 8, the regulating valve 2
7 and the like are adjusted to control the floor heating system 1.

Next, the rising operation at the time of starting the operation of the floor heating system 1 will be described.

First, a case will be described in which the operation is started in a state in which the "warmability index" is not stored and the "warmability index" is stored. First, the desired time for starting heating and the desired temperature are input from the controller 14 in the room 60 that desires heating. The input values, for example, set values with the desired heating time being 6:00 am and the desired room temperature being 25 ° C. are stored in the storage unit 6. The control unit 4 sets the operation start time to 5:00 am, which is about one hour before the input heating time, and starts the operation of the floor heating device 1 at 5 am. When the operation is started, the gas burner 21 is opened to burn the gas, the pump 23 is operated, the predetermined control valve 16 is opened, and the warm water is sent to the predetermined warm water mat 22. At that time, the gas burner 21
The opening degree of the adjusting valve 27 is maximum, and the capacity of the gas burner 21 is maximum. However, the upper limit temperature of the hot water sent from the heat exchanger 25 is 80 ° C., and when the hot water temperature in the low temperature side hot water meter 32 exceeds the upper limit value, the regulating valve 27 is controlled and the gas supply is restricted. .

While the maximum combustion in the gas burner 21 is continued, the floor temperature detector 10 detects the floor temperature and sends the detected temperature to the controller 4. After 10 minutes, the control unit 4
Sends the rise temperature of the floor surface and the combustion amount of the gas burner 21 to the calculation unit 8, and the calculation unit 8 compares these values with the conversion table of FIG. "Ease of warmth index" is calculated. For example, when the temperature rise for 10 minutes is 22 ° C, the capacity of the gas burner 21 is 100
%, The floor warmth index is calculated to be 3. The "warmth easiness index" is stored in the storage unit 6 together with the operation start time, the outside air temperature at that time, and the like.

Then, the arithmetic unit 8 obtains the operation contents based on the obtained "warmability index" and the temperature difference up to the set temperature. For example, if the floor surface temperature at the present time is 17 ° C., the obtained “warmability index” is 3, and the temperature difference up to the set temperature is 8 ° C.
The operation content of passing water for 0 minutes can be obtained. Arithmetic unit 8
When the operation content is obtained, the operation content is sent to the control unit 4, and the control unit 4 performs the subsequent control according to the operation content,
Heat the floor.

Next, the "warmth easiness index" is calculated,
The control at the time of starting the operation with the value stored in the storage unit 6 will be described.

When the desired heating time and the set temperature are input,
The “warm-up easiness index” in the storage unit 6 is read out, and the calculation unit 8 calculates the amount of heat required to raise the floor surface temperature to the set temperature, that is, the operation amount of the gas burner 21. For example, if the desired heating time is 6:00 am and the set temperature is 25 ° C, the floor surface temperature is measured at about 4:00 am about 2 hours before the set time, and if the temperature is 5 ° C, the When the "easiness index" is 3, the combustion opening and the required time for efficiently increasing the temperature difference of 20 ° C up to the set temperature are obtained. When it is determined that the content of this operation is, for example, performing maximum combustion by the gas burner 21 for 30 minutes and then performing combustion for 15 minutes at an output of 80%, the operation start time is 4 from the input set time.
Five minutes ago, that is, 5:15 am. However, the temperature measurement and the calculation of the operation contents are performed at any time thereafter, and if the floor surface temperature changes during that time, the operation start time is changed in response to the temperature change. Then, when the time when the floor surface temperature is detected coincides with the operation start time calculated from the detected floor surface temperature, the control unit 4 starts the operation according to the calculated combustion state.

Since the floor heating device 1 is controlled according to the operation contents obtained in this way, the heat source device 20 can be started up in conformity with the easiness of warming of the floor surface,
The floor temperature can be raised to the desired temperature according to the set time. Therefore, it is possible to perform reliable temperature control, prevent unnecessary floor temperature rise, and prevent energy waste.

In the above example, the calculation unit 8 determines the "warmth easiness index" and the operation content based on the table stored in the storage unit 6, but the calculation unit 8 does not rely on these tables. Alternatively, a predetermined arithmetic expression may be provided and the calculation may be performed.

In the above embodiment, the floor temperature detector 10 detects the floor surface temperature and the "warmness index" is calculated based on the detected value. However, in the present invention, the room temperature detector 12 is used. The “warmth easiness index” may be calculated based on the detected room temperature.

Further, in the above embodiment, the warm water mat 2 is placed under the floor.
Although the example in which 2 is installed has been described, the present invention is not limited to this, and the water guiding pipe may be arranged directly under the floor, or may be formed in a carpet shape, or one in which the water guiding pipe is passed inside the tatami mat.

[0039]

According to the floor heating system of the present invention, the "warmness index" of the floor heating system at the start of operation calculated from the temperature rise immediately after the start of floor heating and the heat supply amount of the heat source device is stored, When the operation is started later, the required time and the amount of combustion are calculated from the stored "warmability index" and the set temperature entered, and the operation start time is determined. The floor temperature can be raised to the set temperature. Therefore, comfortable heating is surely obtained, and unnecessary energy is not consumed when the temperature rises.

Also, when the same control is performed on the basis of the room temperature, the room temperature can be similarly set to a desired state reliably and efficiently.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment according to a floor heating apparatus of the present invention.

FIG. 2 is a block diagram showing a control device.

FIG. 3 is a schematic configuration diagram of a floor heating device.

FIG. 4 is a table for obtaining a warmth easiness index.

FIG. 5 is a table for obtaining control contents.

[Explanation of symbols]

 1 floor heating device 2 control device 4 control unit 6 storage unit 8 calculation unit 10 floor temperature detector 13 input unit 14 controller 16 control valve 20 heat source unit 21 gas burner 22 mat 23 pump 24 pipe 25 heat exchanger 27 adjustment valve 30 low temperature side Header 32 Low temperature thermometer 33 High temperature thermometer 34 High temperature side header 38 Return header

Claims (2)

[Claims] 1. A floor heating device in which a hot water conducting pipe is arranged under the floor, and hot water heated by a heat source machine is passed through the conducting pipe to heat the room from the floor surface to a floor surface for measuring the temperature of the floor surface. Temperature detecting means, storage means for storing the floor surface temperature detected by the floor surface temperature detecting means in time series, and the floor surface temperature stored in the storage means and the heat consumption of the heat source unit to determine the floor surface temperature. A determination unit for determining the "warmth easiness index", a storage unit for storing the "warmth easiness index" determined by the determination unit, an input unit for a user to input a set time and a set temperature, and the storage unit "Ease of warmth index" stored in
And a calculation means for calculating a combustion amount and an operation start time required to reach the setting condition input by the user, based on the floor temperature detected by the floor temperature detection means, and the calculation means. A floor heating device comprising: a control unit that controls the heat source unit according to the operation start condition. 2. A floor heating device for arranging a hot water conducting pipe under the floor to heat hot water heated by a heat source device through the conducting pipe to heat the room from the floor surface to the room temperature detected by the room temperature detecting means. A time-series storage unit, a determination unit that determines the "warminess index" in the room from the room temperature and the heat consumption of the heat source device stored in the storage unit, and the determination unit A storage means for storing the "warmth easiness index", an input means for a user to input a set time and a set temperature, and a "warmth easiness index" stored in the storage means.
And a calculation means for calculating a combustion amount and an operation start time required to reach the setting condition input by the user based on the room temperature detected by the room temperature detection means, and an operation calculated by the calculation means. A floor heating device comprising: a control unit that controls the heat source unit according to a start condition.