JP3562605B2 - Hot water floor heating system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a hot water floor heating device that circulates hot water on a floor in a room to perform heating.
[0002]
[Prior art]
Conventionally, floor heating devices using hot water include, for example, installing a floor heating panel as a radiator on a floor in a room and installing, at an appropriate position, a heat source device that generates hot water supplied to the floor heating panel. A heat valve that adjusts the amount of hot water supplied to the floor heating panel is disposed between the heat source device and the floor heating panel, and the operation of the heat source device and the heat valve is performed in a room. A control unit is installed to control the heat source unit based on the difference between the room temperature and the set temperature, and a control signal is sent from the control unit to the thermal valve to control ON / OFF thereof. The supply amount of the hot water having the predetermined temperature generated in the above is controlled so that the temperature in the room is maintained near the set temperature (for example, see Japanese Patent Application Laid-Open No. 147505/1994).
[0003]
[Problems to be solved by the invention]
By the way, in such a conventional hot water floor heating device, the hot water temperature generated in the heat source unit is kept constant. The temperature is set high.
[0004]
According to such a hot water circulation method, although the rise of the bed temperature at the start of operation is indeed fast, at the time of the heat retention processing after reaching the set temperature, from the control unit based on the difference between the room temperature and the set temperature. Since the control signal is sent to the thermal valve to control ON / OFF of the thermal valve, the supply amount of the hot water is controlled, and the control condition is updated while being updated every predetermined cycle time. Fluctuation of the floor surface temperature at the time of switching ON / OFF of the valve train is large, and comfort may be impaired.
[0005]
On the other hand, if the tapping temperature from the heat source unit is set low to avoid such a problem, conversely, the fluctuation of the floor surface temperature during the heat retaining process can be suppressed small, but the rise of the floor temperature at the start of operation may be reduced. There is a problem such as being late.
[0006]
The present invention has been made in view of such a conventional problem, and in a hot water floor heating device, while increasing the floor temperature rise at the start of operation as much as possible, at the time of heat retention processing after the room temperature reaches a predetermined temperature. The problem to be solved is to minimize the fluctuation range of the bed temperature.
[0007]
[Means for Solving the Problems]
A hot water floor heating device according to claim 1 of the present invention has a radiator installed on a floor in a room and a heat source device that generates hot water supplied to the radiator, in order to solve the above-described problem. A heat valve provided between the heat source device and the radiator, for adjusting a supply amount of hot water to the radiator, and a remote controller having a room temperature detector and temperature setting means for detecting the temperature of the room. A control unit that is provided in the remote controller and controls the operation of the thermal valve based on a difference between a room temperature detected by the room temperature detector and a set temperature set by the temperature setting unit. and said heat source unit is provided with two forms hot water circulation function of the hot circulating hot water and cold hot water circulation, the control unit, the hot water circulation function of the heat source unit, at the beginning the heating operation and the hot hot water circulation If both a predetermined time elapses after the heating operation starts, or as either the conditions for room temperature has reached a predetermined temperature lower than the set temperature, switching only the low temperature hot water circulation, it was switched to the low-temperature hot water circulation Later, the control of the supply amount of hot water to the radiator is shifted to an operation of a heat valve that updates a control condition at every predetermined cycle time (that is, a hot water circulation amount control operation) .
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a system configuration diagram showing a hot water circuit of the hot water floor heating device of the present embodiment. In FIG. 1, reference numeral 1 denotes a hot water floor heating device according to the present embodiment.
The hot water floor heating device 1 supplies a plurality of floor heating panels 2 (2a and 2b) as radiators installed indoors, supplies heating water to the floor heating panels 2, and heats the heating water. A heat source unit 3 for performing heating, a hot water pump 4 provided in the heat source unit 3 for pumping the heating water, and each floor heating panel 2 are connected, and the heating water pumped by the hot water pump 4 is supplied to each floor heating panel. The heating water supply pipes 5 (5a and 5b) leading to the floor heating panel 2 and the floor heating panels 2 and the heat source units 3 are connected to each other. A heating water return pipe 6, a heating valve 7 (7 a, 7 b) provided in the middle of each of the heating water supply pipes 5 to adjust the amount of heating water supplied to each floor heating panel 2; Provided corresponding to each floor heating panel 2, the floor temperature It is schematically configured with a remote controller 8 for performing setting of (8a · 8b) by.
[0010]
More specifically, as shown in FIG. 2, the heat source unit 3 includes a gas valve 9 for adjusting a supply amount of combustion gas supplied to a burner (not shown) for heating the heating water, and an ignition for igniting the burner. The heater 10 is connected with the plurality of thermal valves 7 (7a and 7b) and the hot water pump 4.
[0011]
The heat source device 3 has two hot water circulation modes: a high-temperature hot-water circulation that circulates high-temperature (for example, 80 ° C.) hot water, and a low-temperature hot-water circulation that circulates low-temperature (for example, 60 ° C.) hot water.
[0012]
Further, the heat source unit 3 is provided with a combustion control circuit 11 for controlling the operation of the gas valve 9 and the igniter 10, and operates the heat operated valves 7 (7a and 7b) and the hot water pump 4. A control unit 12 is provided, and a microcomputer 13 for outputting a control signal to the combustion control circuit 11 and the driver 12 is provided. A test run switch 14 and a communication circuit 15 for transmitting and receiving signals to and from the remote controller 8 (8a, 8b) are connected.
[0013]
As shown in FIG. 3, the remote controller 8 is provided with a display section 16 for performing various displays on an operation panel thereof, and also includes a time setting key 17, a program time setting key 18, a temperature setting key 19, Various operation keys such as a stop key 20, a program setting key 21, and a time setting key 22 are provided, and a room temperature thermistor 23 as a room temperature detector for detecting a room temperature, and a floor as a floor temperature detector described later. A connector 25 to which the temperature thermistor 24 is connected is provided.
[0014]
At positions corresponding to the operation / stop key 20 and the program setting key 21, respectively, an operation display lamp 20a indicating an operation state and a program operation display lamp 21a indicating a program execution state are provided. Further, a switch box 40 for setting various functions of the remote controller 8 is provided below the remote controller 8.
[0015]
A signal line 27 is connected to the floor temperature thermistor 24, and a plug 28 is detachably attached to the other end of the floor temperature thermistor 24 to a connector 25 of the remote controller 8. Are detachably connected to the remote controller 8.
[0016]
The display unit 16 includes a current time display unit 29 composed of a 7-segment LCD, a program time display unit 30, and a set temperature display unit 31 composed of a flat LCD.
[0017]
On the other hand, as shown in FIG. 2, a microcomputer 32 and a communication circuit 33 for transmitting and receiving signals to and from the heat source device 3 are incorporated in the remote controller 8. At the start of the heating operation, high-temperature hot water circulation is performed. On the other hand, when a predetermined time has elapsed from the start of the heating operation, or when the room temperature has reached a predetermined temperature range, the hot water A control circuit 34 is provided as a control unit for switching the circulation function to low-temperature hot water circulation.
[0018]
Further, the switch box 40 includes a plurality (three in this embodiment) of dip switches 40a, 40b, and 40c provided corresponding to the functions of the remote controller 8, respectively. A supply temperature setting switch for manually setting the temperature of the supplied hot water, a test switch for advancing the time quickly, and a high temperature operation time setting switch for setting a high temperature operation time are provided.
[0019]
Next, the operation of the hot water floor heating device 1 according to the present embodiment will be described.
[0020]
The hot water floor heating device 1 starts operating when a start / stop switch 20 provided in the remote controller 8 is turned on, and the set temperature set in the remote controller 8 with the start of operation, Based on the difference from the room temperature detected by the room temperature thermistor 23, the ON / OFF time of the thermal valve 7 is set to 20 minutes as one cycle, and the ON time is 3 minutes to 20 minutes (in this case, continuous operation). The supply amount of warm water supplied to the floor heating panel 2 via the thermal valve 7 is adjusted, and the room temperature is adjusted.
[0021]
Next, the details will be described with reference to the processing flow shown in FIG. 6. First, in step S1, the presence or absence of an operation ON signal is confirmed. If there is no operation ON signal, an operation stop signal is output in step S2. After being sent to the heat source unit 3 and a stop signal is output to the heat valve 7 to stop the circulation of the hot water to the floor heating panel 2, the process returns to the step S1 to be in a standby state for inputting the operation ON signal. .
[0022]
If it is determined in step S1 that there is an operation ON signal, the process proceeds to step S3, where it is determined whether there is an operation ON signal in the previous process, and the reception of the operation ON signal is the first time. Then, the process proceeds to the next step S4, and if there is an operation ON signal in the previous process (that is, the second or subsequent time), the process proceeds to step S5.
[0023]
In step S4, the remote controller 8 transmits the operation ON signal to the heat source device 3, and also performs the room temperature information obtained from the room temperature thermistor 23 and the set temperature (room temperature) information set by the temperature setting key 19. From this, the ON / OFF time of the thermal valve 7 is calculated, a thermal valve ON signal is transmitted to the heat source unit 3, and at the same time, the thermal valve ON timer is set, and further, the high temperature operation timer is set. At the same time, after the driving signal of the high-temperature hot water circulation is transmitted to the heat source unit 3, the process proceeds to step S5.
[0024]
Here, the time (T1) set by the high-temperature operation time setting switch 40c of the remote controller 8 is set in the high-temperature operation timer.
[0025]
In this step S5, it is determined whether or not the high-temperature operation timer has expired. If it is determined that the high-temperature operation timer has not expired, the process proceeds to the next step S6, where the room temperature becomes (set temperature). -2) A determination is made as to whether or not the temperature has reached at least ° C.
[0026]
If it is determined in step S6 that the room temperature is equal to or lower than (set temperature-2) ° C., the process proceeds to the next step S7, where it is determined whether or not the thermal valve is ON. The process proceeds to the next step S8 on condition that there is a condition, it is determined whether or not the thermal valve ON timer set in the step S4 has expired, and the process proceeds to the next step S9 on condition that the thermal valve ON timer has ended. .
[0027]
In this step S9, the heat valve OFF signal is sent to the heat source unit 3 and the heat valve 7 is closed, so that the supply of the hot water to the floor heating panel 2 is stopped, and the heat valve After the OFF timer is set, the processing from step S1 is repeated. This thermal valve OFF timer is the time calculated in step S4.
[0028]
If it is determined in step S8 that the thermal valve ON timer has not expired, the process returns to step S1, and the processes from step S1 are repeated until the thermal valve ON timer expires.
[0029]
According to the processing in steps S1 to S9, the above-described operation is performed until a predetermined time (time set by the high-temperature operation timer) elapses after the start of the heating operation or until the room temperature exceeds (set temperature−2) ° C. By supplying high-temperature hot water from the heat source unit 3 to the floor heating panel 2, the rise of the temperature of the floor heating panel 2 is accelerated.
[0030]
On the other hand, if it is determined in step S5 that the high-temperature operation timer has expired, and if it is determined in step S6 that the room temperature has reached (set temperature−2) ° C., the process proceeds to step S10 and the heat The ON / OFF time of the valve 7 is calculated, a heat valve ON signal is sent to the heat source unit 3, a heat valve ON timer is set, and a drive signal for low-temperature hot water circulation is sent to the heat source unit 3. Is transmitted, the processing after step S1 is repeated.
[0031]
By the processing of steps S5 and S10, after the start of operation, the supply of high-temperature hot water beyond the set time T1 is prevented, and the floor F is prevented from being overheated.
[0032]
Further, after the room temperature is raised to the predetermined temperature by the processing of steps S6 and S10, the hot water circulation from the heat source unit 3 is performed as the low-temperature hot water circulation, so that the thermal valve during the warming process of the floor temperature is performed. The temperature change of the floor surface due to ON / OFF of 7 is kept small, and the low-temperature hot water circulation is immediately performed when the room temperature rises to the predetermined temperature even at a time other than the rewriting time of the control condition.
[0033]
Further, when it is determined in step S7 that the thermal valve 7 is not in the ON state, the process proceeds to step S11, in which it is determined whether the thermal valve OFF timer has expired. Is determined, the processing from step S1 is repeated until the heat valve OFF timer expires.
[0034]
If it is determined in step S11 that the thermal valve OFF timer has expired, the process proceeds to step S10 and subsequent steps.
[0035]
FIG. 7 shows the relationship between the elapsed time of the process in the hot water supply control, the room temperature, and the hot water temperature.
[0036]
As described above, according to the hot water floor heating device 1 according to the present embodiment, the high-temperature hot water is supplied to the floor heating panel 2 at the start of operation, so that the floor F is rapidly heated and the room temperature is reduced. The temperature is quickly raised, and after reaching the predetermined room temperature, the hot water circulation from the heat source unit 3 is switched to the low-temperature hot water circulation, so that the change in the bed temperature due to the intermittent hot water circulation is suppressed, Comfortable heat treatment is performed.
[0037]
Further, even during the heat retention process or immediately after the start of the operation, when the room temperature reaches the predetermined temperature, the operation is switched to the low-temperature hot water circulation, thereby preventing overheating in the entire operation.
[0038]
【The invention's effect】
As described above, according to the hot water floor heating device of the first aspect of the present invention, when the predetermined time has elapsed from the start of the heating operation, or when the room temperature has reached the predetermined temperature lower than the set temperature , by the control unit. Under any condition, the hot water circulation function of the heat source unit is switched from the high temperature hot water circulation to only the low temperature hot water circulation , and after the switching, the control of the supply amount of the hot water to the radiator is performed every predetermined cycle time. Since the operation is shifted to the operation of the thermal valve for updating the control condition, the following excellent effects are obtained.
[0039]
At the start of operation, high-temperature hot water is supplied to the radiator to rapidly heat the floor, whereby the room temperature can be quickly raised, and after reaching a predetermined room temperature lower than the set temperature. In the above, the hot water circulation from the heat source unit is switched to the low-temperature hot water circulation, and the change in the floor temperature due to the intermittent hot water circulation is suppressed to a small value . Even if the control condition of the supply amount of the low-temperature water is updated every predetermined cycle time, the room temperature is not raised to the predetermined temperature or more at a time other than the update time of the control condition.
[Brief description of the drawings]
FIG. 1 is an overall system configuration diagram of a hot water floor heating device according to the present invention.
FIG. 2 is a block diagram illustrating a control system of the hot water floor heating device according to the first embodiment of the present invention.
FIG. 3 is an external perspective view showing a remote controller of the hot-water floor heating device of the present invention.
FIG. 4 is a front view of a switch box provided with a high-temperature operation time setting switch provided in the hot water floor heating device of the present invention.
FIG. 5 is a schematic diagram showing a positional relationship between a remote controller and a radiator of the hot water floor heating device of the present invention.
FIG. 6 is a process flow chart during operation of the hot water floor heating device of the present invention.
FIG. 7 is a diagram showing the relationship between the elapsed time of the hot water supply control process and the room temperature and the hot water temperature in one embodiment of the present invention.
[Explanation of symbols]
1 Hot water heater 2 Floor heating panel (radiator)
7 Thermal valve 8 Remote controller 23 Room temperature thermistor (room temperature detector)
34 control circuit (control unit)
40c High temperature operation time setting switch

Claims (1)

A radiator installed on the floor in the room, a heat source device that generates hot water to be supplied to the radiator, and a heat source device provided between the heat source device and the radiator to supply hot water to the radiator. A heat valve to be adjusted , a remote controller having a room temperature detector and a temperature setting means for detecting the temperature of the room, and a remote controller provided in the remote controller, wherein the room temperature detected by the room temperature detector and the temperature setting means are provided. A control unit that controls the operation of the thermal valve based on the difference between the set temperature and the set temperature, and the heat source unit has two types of hot water circulation functions of high-temperature hot water circulation and low-temperature hot water circulation. the control unit, the hot water circulation function of the heat source equipment, if at the beginning the heating operation a predetermined time has elapsed since the heating operation starts with a high-temperature hot water circulation or the set room temperature As one of the conditions for reaching the predetermined temperature lower than the degrees, switching only the low temperature hot water circulation, after switching to the low-temperature hot water circulation, the control of the hot water supply amount to the radiator, the predetermined cycle time A hot water floor heating device characterized in that the operation is shifted to an operation of a thermal valve that updates a control condition every time .

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