JPH1114074A - Temperature controller for underfloor heating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out temperature control in such a manner that room temperature does not deviate from a set temperature extremely and that floor temperature influenced by underfloor temperature does not deviate from a set temperature extremely. SOLUTION: In a heating apparatus wherein heating medium is circulated to a heat source machine 1 and a floor heating radiator 2 through a heating medium circulation path 4, in order to heat an underfloor and an interior of a room by heated underfloor air, a detector 13 for detecting temperature of the heating medium and a detector 14 for detecting temperature within the room are provided, and flow of the heating medium flowing through the heating medium path is controlled by using signals from the two detectors 13, 14 and a signal set within a controller 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a temperature control device for underfloor heating.

[0002]

2. Description of the Related Art It is known to heat under the floor in a highly airtight and highly insulated house.

[0003]

Problems to be solved by the invention
The perimeter of the foundation is installed by a driving method using a heat-absorbing material that does not absorb water (foamed polyethylene, etc.) so that there is no gap from the upper end of the base to the top of the foundation. In order to further protect the ground from moisture, a moisture-proof film such as a polyethylene film is laid on the ground floor, and a heat insulating material (foamed polyethylene, etc.) is stretched over it.
The holding concrete is spread over the holding sand.

[0004] However, in a highly airtight and highly insulated house, heat is easily taken under the floor, and the floor temperature is reduced as compared with a normal house, so that it becomes necessary to heat the underfloor.

Further, if the underfloor part of the building is not made to have the same environment as the room, there is a problem that dew forms on a water pipe or the like piped under the floor. For this reason, in a highly airtight and highly insulated house, a radiator is installed under the floor. Therefore, it is conceivable to heat the room using the heat of the underfloor heating. However, if the room is heated using the heat of underfloor heating, the room temperature should be changed immediately by changing the temperature of the heating medium, regardless of whether the room temperature rises or falls due to the solar heat inserted through the window or the cold air entering through the gap. Is not possible, and the unpleasant state continues. Also, if the control of the heating medium floor heating is attempted to be controlled by a sensor that detects room temperature, there is a problem that the temperature under the floor and the accompanying floor temperature become too high before the room temperature rises completely. When the floor height increases, problems such as warpage of the floor finishing material occur. An object of the present invention is to provide a temperature control device for underfloor heating that has solved such a problem.

[0006]

According to the present invention, in order to achieve the above object, according to the first aspect of the present invention, a heat medium is circulated between a heat source unit and a radiator provided under the floor. In the underfloor space heating system, the underfloor space warms the floor of the room above the underfloor space with the underfloor space warming, and the underfloor space warming is performed through the vent hole provided on the floor or in the vicinity thereof. To circulate in the room above, provided a detector for detecting the temperature of the heat medium and a detector for detecting the temperature of the room, comparing the signal from both detectors and the setting signal, the heat medium circulation path It is characterized in that the flow of the flowing heat medium is controlled, and with such a configuration, both the under-floor temperature and the accompanying room temperature and the room temperature do not exhibit extremely low or high states.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments illustrating the present invention will be described. 1 and 2, reference numeral 1 denotes a heat source unit provided with a kerosene burner or other burner or an electric heater, and 2 denotes a radiator for underfloor heating provided under the floor 3, and a heat exchange unit 1a of the heat source unit 1 and an underfloor unit. The heating medium circulation path 4 connects the heating medium path 2a in the radiator 2 for heating, and the pump 5 interposed in the heating medium circulation path 4 allows the heat medium path 2a and the heat exchange section 1a to be interposed. A heat medium is circulated through the heat source unit 1 and heat of the heat medium heated by the heat source unit 1 is radiated from a radiator 2 for underfloor heating to heat underfloor and a floor 6 constituting a ceiling of the underfloor 3. Through the vent 7 provided in the
The room 8 is heated by circulating warm air under the floor 3 to the room 8 above the floor 3.

The vent 7 is not limited to the one provided on the floor 6, but may be provided on a wall or the like.

In FIG. 2, reference numeral 9 denotes an expansion tank;
Is a heat medium control valve, 11 is an air vent valve, 12 is a safety valve, 13
Denotes a heat medium temperature detector for detecting the temperature of the heat medium circulation path 4, and specifically detects the temperature of the heat medium returning from the heat medium circulation path 3 to the heat source device 1. Reference numeral 14 denotes a room temperature detector for detecting room temperature.

When the heat source unit 1 is operated, the heat medium returning to the heat source unit 1 is automatically controlled so that the temperature of the heat medium returns to a certain temperature or higher. In some cases, it becomes a pilot state, extinguishes the fire if the temperature rises more than a certain temperature, and is controlled so that the ignition heater, the blower, the fuel pump, etc. are operated to be in a combustion state when there is a heat request again. .

The floor temperature and the room temperature by the present apparatus are controlled according to the set temperature and the program set in the storage circuit of the control device 15. The setting of the set temperature and the program in the storage circuit of the control device 15 is performed using the remote control operation panel A shown in FIG. To explain this, in the remote control operation panel A, a is an operation switch for starting and stopping operation, b is a program setting switching button, c is a group of buttons for program setting, and the program setting button c
Is a feed button d, a drive button e, and a save button f
And a stop button g. h indicates a button for temperature / time setting, and the button h for temperature / time setting is composed of j and k for setting high / low of temperature (hour / minute in case of time setting) on the left and right. When the operation switch a is set to the “ON” state, the setting button b is set to the input mode of the set temperature,
When the button is pressed again, the mode is changed to the save temperature input mode, the current time input mode, and the program input mode. At this time, which of the input mode states is indicated by lighting of each lamp. Then, in the "Set temperature" input mode,
Pressing the "temperature / time setting" button j or k allows normal temperature setting. This set temperature is displayed on a set temperature display section m composed of a liquid crystal display panel. Pressing the "setting change" button b again sets the input mode for "save temperature" (temperature lower than the normal operation mode), and operating the "temperature / time setting" button j or k sets the saved set temperature. The set temperature is displayed on the temperature display section m. Further, the “setting change” button b is pressed again to set the “program” input mode, and the “run” button e, the “save” button f, and the “stop” button g of the program setting button group c are appropriately operated. And "Temp / Time" button j
Or 24 hours (one day) by operation in combination with k
Is assigned to each of the “run, save and stop” modes. In addition, at this time, when the operation button e is pressed, the letters "operation" on the temperature display section m are turned on, and when the button j or k is pressed, 24 frames connected to "operation" (one frame corresponds to one hour).
The color of the frame corresponding to the set time is changed and the temporal display is performed. Similarly, when the button f is pressed, the character of "save" in the temperature display section m lights up, and the button j or k is pressed.
When the button is pressed, the color of the frame corresponding to the set time in the 24 frames (one frame corresponds to one hour) connected to the "save" is changed, and the contents of the temporal program are displayed.

The forward button d is used when the user wants to continue the previous state. That is, if the "Save" button f of the program setting switching button b is currently pressed and the previous mode is "run", the feed button d
To enter the "operation" mode e. If you want to control the temperature only with the floor temperature, operate the program setting switch button b to select the “set temperature” mode or the “save” mode, and press the “feed” button d and the “temperature / time setting”.
Pressing buttons j or k simultaneously sets the "set temperature" or "save" temperature.

Next, a case where the control device 15 controls the pump 4 interposed in the heat medium circulation path will be described. The control device 15 includes a circuit shown in a block diagram in FIG. To explain this, a comparison circuit 17 for comparing an output signal from the storage circuit 16 and the heat medium temperature detector 13 described above, an amplification circuit 18 for amplifying a signal from the comparison circuit 17, An output circuit 19 for converting the signal into an output signal for controlling the pump 5; and a proportional circuit 20 for converting the signal into a proportional signal. Further, a comparison circuit for comparing the output signal from the storage circuit 16 with the output signal from the room temperature detector 14 A circuit 21 includes an output circuit 23 that receives a signal from the comparison circuit 21 and outputs an open / close signal of an interrupter 22 that interrupts a signal transmitted from the output circuit 19 to the pump 5.

A case where the pump 5 is controlled in accordance with a program programmed in the control device 15 will be described with reference to a flowchart shown in FIG. The control device 15
When the operation switch provided in is turned on, it is determined whether or not the setting mode is the stop mode. When it is confirmed that the mode is not the stop mode, it is next determined whether or not the normal operation mode is set.
In the case of the normal operation mode, it is further determined whether or not the heat medium temperature in the heat medium circulation path 4 is equal to or lower than the set temperature of the normal operation mode. Judging that there is, if the room temperature is below the set temperature,
By operating the pump 5, the heat medium is circulated and heated between the heat exchange unit 1a of the heat source unit 1 and the heat medium passage 2a in the radiator 2 for floor heating. When the temperature of the heat medium becomes equal to or higher than the set temperature in the normal operation mode, the pump 5 is stopped. Even if the temperature of the heat medium is equal to or lower than the set temperature in the normal operation mode, the pump 5 is stopped when the room temperature becomes equal to or higher than the set temperature in the normal operation mode. Therefore, even when the room temperature becomes higher than the set temperature due to the disturbance, the floor heating is stopped.

When it is determined whether the operation mode is the normal operation mode, if it is determined that the operation mode is not the normal operation mode, it is determined whether the operation mode is the save operation mode. If the operation mode is the save operation mode, the pump 5 is operated in the save mode. Is done. That is, it is determined whether or not the temperature of the heat medium in the heat medium circulation path 4 is a temperature set in the save operation mode. Then, if it is below, the operation of the pump 5 is continued. Then, when the heat medium temperature becomes equal to or higher than the set temperature in the save operation mode, the pump 5 is stopped. Further, even if the temperature of the heat medium is equal to or lower than the set temperature of the save operation mode, the pump 5 is stopped when the room temperature becomes equal to or higher than the set temperature of the save operation mode. This operation is repeated to keep the room temperature and the bed temperature constant. In the above-described apparatus, the pump 5 is controlled by the control signal from the control device 15 to control the room temperature and the under-floor temperature, but the heat medium control valve 10 interposed in the heat medium circulation path 4 It can also be controlled to control room temperature and underfloor as well.

[0016]

As described above, according to the first aspect of the present invention, the room is heated by circulating the warm air from the underfloor unit into the room. Since the temperature is also controlled by the room temperature, when the room temperature changes due to disturbance, the temperature of the heating medium can also be controlled by the room temperature, so that the room temperature does not extremely deviate from the set temperature, and the floor temperature accompanying the floor temperature also decreases. It can be kept near the set temperature.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an embodiment of the present invention in the case of floor heating;

FIG. 2 is a system diagram showing a circulation path of a heat medium.

FIG. 3 is a front view of an operation panel A for remote control.

FIG. 4 is a block diagram showing a control circuit.

FIG. 5 is a flowchart illustrating the operation of the pump.

[Explanation of Signs] 1 Heat source unit 2 Radiator for floor heating
4 Heat medium circulation path 13 Detector 14 Detector
15 Control device

Claims (1)

[Claims] An apparatus for heating an underfloor space by circulating a heat medium between a heat source device and a radiator provided under the floor,
The floor of the room above the underfloor space is heated by the warm air of the underfloor space, and the warm air of the underfloor space is circulated to the room above the underfloor space via a vent provided on the floor or in the vicinity thereof. A detector for detecting the temperature of the heat medium and a detector for detecting the temperature of the room are provided, and a flow of the heat medium flowing through the heat medium circulation path is obtained by a signal from both detectors and a setting signal set in the control device. Temperature control device for underfloor heating characterized by controlling the temperature of the underfloor heating.