JP2001304589A - Warm water floor heating system and method for controlling its operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm water floor heating system capable of always obtaining a high control accuracy and floor heating even when a temperature sensing element is disconnected and a method for controlling its operation. SOLUTION: The warm water floor heating system comprises a floor heating panel 1, a heat source machine (water heater) 2 containing a circulating pump, a circulating pipeline (warm water piping) having a supply tube 3 and a return tube 4 for communicating with the panel 1 and the machine 2, an opening/ closing valve (thermal valve) 5 provided at the tube 5, a first thermistor (temperature sensing element) 6 installed in the panel 1, a second thermistor (temperature sensing element) 7 disposed at the tube 4, a floor heating controller 8 for controlling to open or close the valve 5 connected to the thermistor 6 and the valve 5 via communicating lines, and a remote controller 9 for turning ON, OFF setting of a heating floor temperature, heating of a heat. In this case, the controller 8 is connected to the controller 9 via a communicating line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water floor heating system provided on a floor of a building and an operation control method thereof.

[0002]

2. Description of the Related Art Conventionally, in a hot water floor heating system having a floor heating remote controller and a floor heating controller, the room temperature is controlled by transmitting a temperature detection signal from a temperature detecting element such as a thermistor installed on the floor heating panel to the floor heating remote controller. And the hot water supply operation is controlled based on the temperature detection signal.

[0003]

However, in the above-mentioned conventional hot water heating system, the connection of the temperature detecting element is forgotten at the time of construction, or the temperature detecting element at the time of disconnection of the temperature detecting element after construction is installed or replaced. In repair work, etc., heating operation must be stopped,
There was a problem that a floor space had to be peeled off to secure a work space. An object of the present invention is to solve the above-mentioned problems, and to easily attach and replace the temperature detecting element even when the user forgets to attach the temperature detecting element during construction or when the temperature detecting element is disconnected, thereby performing comfortable floor heating. To provide a hot water floor heating system and an operation control method thereof.

[0004]

According to the present invention, there is provided a hot water floor for heating a room by circulating hot water through a floor heating panel laid on the indoor floor. A heating system, an on-off valve arranged in a circulation path of hot water, a floor heating controller for opening and closing the on-off valve, and a remote controller connected to the floor heating controller via a communication line and exchanging control signals In the hot water floor heating system comprising: the floor heating controller and the remote controller, respectively, an input terminal for inputting a detected temperature signal from a floor heating panel, or a temperature detection unit disposed in a hot water circulation circuit. By installing the sensor, if you forget to install the temperature sensing element during construction, or if the temperature sensing element is damaged after construction, etc. It can be addressed by a method such as installing a degree sensing element. The means for changing the hot water circulation operation control sequence for a given detected temperature signal when the detected temperature signal is input to the remote controller and when the detected temperature signal is input to the floor heating controller. By installing a temperature sensing element that can detect and control the floor temperature even if it is installed at a position that shows different temperature characteristics, it is possible to select and control a control pattern suitable for that position. Even if the temperature sensing element is damaged after installation or when the temperature sensing element is damaged after construction, even if it is dealt with by a method such as installing the temperature sensing element in the hot water pipe for convenience, performance close to the original control characteristics can be expected, Floor heating can be performed comfortably. 4. The hot water floor heating system according to claim 3, wherein the room is heated by circulating hot water to a floor heating panel laid on a floor in the room, wherein the on-off valve is disposed in a circulation path of the hot water, and In a hot water floor heating system including a floor heating controller for controlling opening and closing of a valve and a remote controller connected to the floor heating controller via a communication line and exchanging control signals, a detected temperature signal is input to the remote controller. In the case and when the detected temperature signal is input to the floor heating controller, by automatically changing the hot water circulation operation control sequence for the given detected temperature signal, the temperature detecting element for detecting the floor temperature has different temperature characteristics. Even if it is installed at the position shown, the control pattern suitable for that position can be selected and controlled. If the temperature sensing element is forgotten, or if the temperature sensing element is damaged after installation, the performance close to the original control characteristics can be obtained even if the temperature sensing element is installed in the middle of the hot water piping for convenience. We can expect and can perform floor heating more comfortably. In the invention according to claim 4, when the detected temperature signal from the temperature detecting means is input to each of the remote controller and the floor heating controller, it is recognized that the temperature detecting element is connected to both the floor heating controller and the remote controller. However, by selecting a control pattern by giving priority to an input signal such as a significant value, it is possible to eliminate a control problem. In the invention according to the fifth aspect, if a failure such as a disconnection occurs in the detected temperature signal from the temperature detecting means which has been preferentially selected, the detected temperature signal from the non-priority temperature detecting means is promptly selected. By continuing the floor heating operation, the heating operation is not interrupted, and the convenience of the user is improved. In the invention of claim 6, when the detected temperature signal from the temperature detecting means is interrupted in the hot water floor heating system according to any one of claims 1 to 5,
When the temperature sensing element is out of order, the temperature sensing element is repaired by shifting to operation control for opening and closing the on-off valve at predetermined intervals (duty ratio) and continuing the floor heating operation. Meanwhile, the heating operation can be continued. In the invention of claim 7, by performing learning and storing the opening / closing interval of the on-off valve during the normal heating operation in which the temperature detection is effective, and performing the heating operation using the duty ratio as the duty ratio,
By switching to the duty ratio control at the time of failure of the temperature detecting element or the like, the heating operation can be continued even while the temperature detecting element is being repaired, and an appropriate Du.
Since operation control can be performed at the ty ratio, the comfort of the user is not impaired.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot water floor heating system for heating a room by circulating hot water to a floor heating panel laid on a floor in a room, and comprising an on-off valve disposed in a circulation path of the hot water. And a floor heating controller for controlling the opening and closing of the on-off valve, and a remote controller connected to the floor heating controller via a communication line and exchanging control signals, wherein the floor heating controller and the floor heating controller The remote controller is provided with a floor heating panel, or a hot water floor heating system including an input terminal for inputting a detected temperature signal from a temperature detection unit disposed in a hot water circulation circuit, and an operation control method thereof. is there.

[0006]

An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, a hot water floor heating system includes a floor heating panel 1.
A heat source device (water heater) 2 having a built-in circulating pump; a circulation pipe (hot water pipe) composed of a going pipe 3 and a return pipe 4 communicating with the floor heating panel 1 and the heat source device 2; An on-off valve (thermal valve) 5, a first thermistor (temperature detecting element) 6 installed in the floor heating panel 1, and a second thermistor (temperature detecting element) 7 disposed on the return pipe 4. On-off valve 5 in which first thermistor 6 and on-off valve 5 are connected by a communication line
A floor heating controller 8 for controlling the opening and closing of the heater, and a remote controller 9 for setting the heating floor temperature and performing ON-OFF of the heating operation, the floor heating controller 8 and the remote controller 9 are connected by a communication line. It is connected.

In the above hot water floor heating system, the on-off valve 5 is opened and closed intermittently (ON-OFF) during the hot water circulation operation.
By doing so, the supply of hot water to the floor heating panel 1 is controlled, and the temperature of the floor heating panel 1, that is, the temperature of the floor surface, approaches the target temperature set by the remote controller 9 in advance. Note that a first thermistor (temperature detecting element) 6 and
The second thermistor (temperature detecting element) 7 does not need to be connected to both, and only one of them needs to be connected. Normally, a first thermistor 6 that can directly detect the floor surface temperature is connected.

FIG. 2 shows a temperature change of the floor heating panel 1 when the on-off valve 5 is intermittently opened and closed (ON-OFF), that is, a temperature change of the floor surface. When the on-off valve 5 is opened (ON), the temperature of the floor heating panel 1 rises with a specific time delay, the detected temperature of the first thermistor 6 exceeds the target temperature Ts set in advance by the remote controller 9, and the on-off valve O
When reaching the FF point A, the on-off valve 5 is closed (OFF).

When the on-off valve 5 is closed (OFF), the detected temperature of the first thermistor 6 slightly drops after overshoot, and the on-off valve ON point B at which the detected temperature of the first thermistor 6 is lower than the target temperature Ts. , The on-off valve 5 is opened (ON). When the on-off valve 5 is opened (ON), the first
The temperature detected by the thermistor 6 rises after slightly undershoot, and the temperature detected by the first thermistor 6 rises to the target temperature Ts.
When the on / off valve OFF point A which is higher than that is reached, the on / off valve 5 is closed (OFF).

FIG. 3 shows a change in the detected temperature of the hot water pipe, that is, a change in the detected temperature of the return pipe 4 when the on-off valve 5 is opened and closed intermittently (ON-OFF). On-off valve 5 is open (O
N), the floor heating panel 1 has an inherent time delay.
When the temperature of the return pipe (hot water pipe) 4 rises and the temperature detected by the second thermistor 7 exceeds the target temperature Ts preset by the remote controller 9 and reaches the on-off valve OFF point C, The valve 5 is closed (OFF).

When the on-off valve 5 is closed (OFF), the detected temperature of the second thermistor 7 slightly overshoots and then drops, and the on-off valve ON point D at which the detected temperature of the second thermistor 7 is lower than the target temperature Ts. , The on-off valve 5 is opened (ON). When the on-off valve 5 is opened (ON), the first
The temperature detected by the thermistor 6 rises after slightly undershoot, and the temperature detected by the first thermistor 6 rises to the target temperature Ts.
When the on / off valve OFF point A which is higher than that is reached, the on / off valve 5 is closed (OFF).

When the detected temperature change of the floor heating panel 1 shown in FIG. 2 is compared with the detected temperature change of the return pipe 4 shown in FIG. 3, the detected temperature change of the floor heating panel 1 of FIG. The temperature difference is relatively gentle, and the temperature difference from the highest value to the lowest value of the detected temperature, that is, the amplitude is small. On the other hand, the change in the detected temperature of the return pipe 4 in FIG. 3 is such that the detected temperature gradient is relatively steep and the temperature difference from the highest value to the lowest value of the detected temperature, that is, the amplitude is large.

In the present invention, based on the control pattern for controlling the temperature of the floor surface to reach the target temperature based on the detected temperature change of FIG. 2, that is, based on the detected temperature of the first thermistor 6 in the floor heating panel 1. A control pattern (first pattern) for opening and closing the on-off valve 5 to control the temperature of the floor surface to reach the target temperature
Control pattern) and a control pattern for controlling the floor surface temperature to reach the target temperature based on the detected temperature change in FIG. 3, that is, opening and closing the on-off valve 5 based on the detected temperature of the second thermistor 7 of the return pipe 4. And a control pattern (second pattern) for controlling the temperature of the return pipe 4, that is, the temperature of the floor surface to reach the target temperature.
The control pattern is selected by operating an operation switch (for example, a dip switch) provided on at least one of the floor heating controller 8 and the remote controller 9.

According to this structure, even if the temperature detecting element for detecting the floor temperature is installed at a position showing different temperature characteristics, a control pattern suitable for the position can be selected and controlled. If you forget to install the
Even if the temperature sensing element is damaged after installation, even if the temperature sensing element is installed in the middle of a hot water pipe (for example, a return pipe) for convenience, performance close to the original control characteristics is expected. Floor heating can be controlled more comfortably.

In another embodiment of the present invention, considering the length of the signal line of the temperature detecting element, the connection destination of the first thermistor 6 is provided not in the floor heating controller 8 installed outdoors or under the floor, but in the room. The remote controller 9, that is, the input signal to the remote controller 9 can be a floor detected temperature signal. As a result, the microcomputer provided in the remote controller 9 recognizes whether the input signal has been input to the remote controller 9 or the floor heating controller 8, and automatically selects a control pattern corresponding thereto. As a result, the above-described effects can be obtained without the need for the operation switch and the selection operation thereof.

In the case where the first thermistor 6 and the second thermistor 7 are connected at the same time, the microcomputer provided in the remote controller 9 can recognize whether the input signal is connected or not. (The first thermistor 6 for detecting the floor surface temperature) is preferentially selected, and the other input signal is canceled, whereby the heating operation control can be performed without any control trouble.

If the input signal from the preferentially selected temperature sensing element is interrupted due to, for example, a disconnection while both temperature sensing elements are connected, the other input signal is immediately controlled. The heating operation is continued with the pattern. At this time, it is also possible to display on the remote controller 9 an error indicating that the temperature detecting element has failed.

When all the input signals from the temperature detecting element are interrupted, a predetermined Du
The operation shifts to a sequence in which the opening and closing operation of the on-off valve 5 is performed according to the ty ratio, and the heating operation is continued. At this time, an error display may be performed as described above. At the time of product shipment, a predetermined fixed duty ratio is stored in a storage device provided in the remote controller 9 or the floor heating controller 8, and the actual duty ratio is used during the heating operation by the temperature detection element. Learning, and updating the memory in the storage device at any time enables the heating operation according to the actual construction site, and continues the comfortable heating operation even if there is a failure due to disconnection of the temperature detection element etc. can do.

[0019]

Since the present invention is constructed as described above, it has the following effects. The hot water floor heating system according to claim 1, wherein the hot water circulates through a floor heating panel laid on the floor in the room to heat the room, comprising: an open / close valve disposed in a circulation path of the hot water; In a hot water floor heating system including a floor heating controller for controlling the opening and closing of a valve, and a remote controller connected to the floor heating controller via a communication line and exchanging control signals, the floor heating controller and the remote controller Each unit has an input terminal to input the detected temperature signal from the floor heating panel or the temperature detection means arranged in the hot water circulation circuit, so if you forget to install the temperature detection element at the time of installation, or after installation When the temperature detecting element is damaged, it can be dealt with by a method such as installing the temperature detecting element in the hot water pipe for convenience. The means for changing the hot water circulation operation control sequence for a given detected temperature signal when the detected temperature signal is input to the remote controller and when the detected temperature signal is input to the floor heating controller. By installing a temperature sensing element that can detect and control the floor temperature even if it is installed at a position that shows different temperature characteristics, it is possible to select and control a control pattern suitable for that position. Even if the temperature sensing element is damaged after installation or when the temperature sensing element is damaged after construction, even if it is dealt with by a method such as installing the temperature sensing element in the hot water pipe for convenience, performance close to the original control characteristics can be expected, Floor heating can be performed comfortably. The invention according to claim 3, wherein an on-off valve arranged in a circulation path of the hot water, a floor heating controller for opening and closing the on-off valve, and a remote controller connected to the floor heating controller via a communication line and exchanging control signals. In the hot water floor heating system including the controller, when the detected temperature signal is input to the remote controller and when the detected temperature signal is input to the floor heating controller, the hot water circulation operation control sequence for the given detected temperature signal is performed. Even if the temperature detection element that detects the floor temperature is set at a position that shows different temperature characteristics by automatically changing,
Since the control pattern suitable for the position can be selected and controlled, the temperature can be conveniently detected in the middle of the hot water piping if the temperature sensing element is forgotten to be installed during construction or if the temperature sensing element is damaged after construction. Even if measures such as installing elements are taken, performance close to the original control characteristics can be expected, and floor heating can be performed more comfortably. In the invention of claim 4,
When the detected temperature signal from the temperature detection means is input to each of the remote controller and the floor heating controller, it recognizes that the temperature detection element is connected to both the floor heating controller and the remote controller, By giving priority to the input signal and selecting the control pattern,
Control problems can be eliminated. In the invention according to the fifth aspect, if a failure such as a disconnection occurs in the detected temperature signal from the temperature detecting means which has been preferentially selected, the detected temperature signal from the non-priority temperature detecting means is promptly selected. By continuing the floor heating operation, the heating operation is not interrupted, and the convenience of the user is improved. In the invention of claim 6, in the hot water floor heating system according to any one of claims 1 to 5, when the detected temperature signals from both temperature detecting means are interrupted, the on-off valve is opened at a predetermined constant interval (duty ratio). By shifting to the operation control for opening and closing and continuing the floor heating operation, the heating operation can be continued even when the temperature detection element is repaired, for example, when the temperature detection element fails. In the invention according to claim 7, during normal heating operation in which temperature detection is effective, the opening / closing interval of the on-off valve is learned and stored, and this is used as the duty ratio to perform heating operation. By switching to the duty ratio control, the heating operation can be continued even while performing the repair work on the temperature detection element, and the operation control can be performed at an appropriate duty ratio. There is no loss.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water heating system of the present invention.

FIG. 2 is a time chart showing a relationship between a detected temperature and a switching operation of an on-off valve when a temperature detecting element is installed in a floor heating panel.

FIG. 3 is a time chart showing a relationship between a detected temperature and a switching operation of an on-off valve when a temperature detecting element is installed in a hot water pipe.

[Explanation of symbols]

Reference Signs List 1 floor heating panel, 2 heat source unit (water heater), 3 outgoing pipe, 4 return pipe 5 open / close valve, 6 first temperature detecting element, 7 second temperature detecting element 8 floor heating controller, 9 remote controller A, C open / close valve OFF point, B, D ON / OFF valve ON point

Claims (7)

[Claims] 1. A hot water floor heating system for circulating warm water through a floor heating panel laid on a floor in a room to heat the room, comprising: an on-off valve disposed in a circulation path of hot water; A floor heating controller for opening and closing control, and a hot water floor heating system including a remote controller connected to the floor heating controller via a communication line and exchanging control signals, the floor heating controller and the remote controller respectively, A hot water floor heating system comprising an input terminal for inputting a detected temperature signal from a floor heating panel or a temperature detecting means provided in a hot water circulation circuit. 2. The hot water floor heating system according to claim 1, wherein the detected temperature signal is input to the remote controller and the detected temperature signal is input to the floor heating controller. A hot-water floor heating system comprising means for changing a hot-water circulation operation control sequence. 3. A hot water floor heating system for heating a room by circulating hot water to a floor heating panel laid on a floor in a room, comprising: an on-off valve disposed in a circulation path of the hot water; In a hot water floor heating system including a floor heating controller for opening and closing control, and a remote controller connected to the floor heating controller via a communication line and exchanging control signals, when a detected temperature signal is input to the remote controller When the detected temperature signal is input to the floor heating controller, the operation control method of the hot water floor heating system automatically changes the hot water circulation operation control sequence for the given detected temperature signal. 4. The hot water floor heating system according to claim 1, wherein when a detected temperature signal from the temperature detecting means is input to each of the remote controller and the floor heating controller, one of the input signals is prioritized. A hot water floor heating system, characterized in that it is selected by the user. 5. In the hot water floor heating system according to claim 4, when a malfunction occurs due to disconnection or the like in the detected temperature signal from the temperature detecting means selected preferentially, the temperature of the non-priority side is promptly increased. A hot water floor heating system characterized by selecting a detected temperature signal from a detecting means to continue the floor heating operation. 6. The hot water floor heating system according to claim 1, wherein when the detected temperature signal from the temperature detecting means is interrupted, the operation of opening and closing the on-off valve at a predetermined constant interval (duty ratio). An operation control method for a hot water floor heating system, wherein the operation is shifted to control to continue the floor heating operation. 7. The operation control method for a hot water floor heating system according to claim 6, wherein the opening / closing interval of the on-off valve is learned and stored during a normal heating operation in which temperature detection is effective, and this is set as the duty ratio. An operation control method for a hot-water floor heating system, comprising: