JP3167809B2 - Floor heating controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating controller for circulating hot water through a plurality of heating panels.

[0002]

2. Description of the Related Art Conventionally, as a floor heating device in which a plurality of heating panels for circulating hot water are arranged, for example, a gas source valve 1 and a proportional valve 2 are connected as a heat source unit A as shown in FIG. A hot water heat exchanger 4 having a gas burner 3 and a plurality of hot water control valves 6A, 6B, 6C (three in the figure) are branched and arranged in a hot water pipe 5 derived from the hot water heat exchanger 4. Floor heating panels 7A, 7B, 7C arranged in a predetermined room are connected to the respective hot water control valves 6A, 6B, 6C,
The hot water pipes 5 that have exited the floor heating panels 7A, 7B, 7C are joined on the heat source device side to form a hot water circulation path connected to the hot water heat exchanger 4 via the circulation pump 8, and the remote controllers 9A, 9A, 9B and 9C are connected to a valve control device 10 for controlling the hot water control valves 6A, 6B and 6C, a main body side control device 11 is connected to the valve control device 10, and the main valve is connected to the main body side control device 11. 1, a proportional valve 2, a circulation pump 8, and a hot water heat exchanger outlet side hot water temperature sensor 12 are known. As the floor heating controller, as shown in FIG. 5, the remote controller 9 checks the temperature difference between the room temperature sensor 13 and the set temperature device 14, and according to this temperature difference, T /
A V-shaped signal generator 15 generates a step-like voltage signal V shown in FIG.
The level determination unit 17 determines the level, supplies a Hi or Lo signal to the main body side controller 11 based on the set temperature, and opens the hot water control valve 6 when the room temperature rises significantly above the set temperature. Alternatively, as shown in FIG. 7, this conventional valve control only switches between open and closed.

[0003]

However, although there are a plurality of remote controls to control a plurality of rooms at the same time, since there is only one heat source, unless there is a signal that all the rooms have reached the set temperature, the temperature of the heat source is reduced. I can't lower it. That is, since the voltage is monitored by the level determination unit 17, all voltages are L
o If there is no signal, the hot water temperature is not adjusted and even one
If there is a signal, the hot water temperature will not be adjusted. For this reason, precise room temperature control for each room cannot be expected. Therefore, recently, a voltage signal that changes linearly with respect to the temperature difference between the room temperature and the set temperature is generated by a remote controller (see the solid line in FIG. 3), and the hot water control valve is controlled according to the voltage signal (see FIG. 4). ) Has been proposed in which the amount of hot water supplied to the floor heating panel can be adjusted for each room.
However, in the case where a method in which the output voltage of the remote controller changes linearly in such a manner as described above is employed, for example, in the case of using a conventional remote controller (a model in which the voltage signals Hi and Lo change stepwise), the remote controller fails. At that time, it was impossible to substitute and use a new type of remote controller (a type in which the voltage signals Hi and Lo change in inclination). That is, since the level discrimination unit 17 performs the level discrimination with an intermediate threshold value, if a remote controller having the voltage characteristic shown by the solid line in FIG.

In view of the above circumstances, the present invention has a configuration in which a signal generator of a remote controller is provided with a temperature sensor such as a room temperature sensor, a temperature setting device, and a characteristic changing means, and the output of the remote controller is changed in inclination or stepwise. It is an object of the present invention to provide a floor heating controller that can solve the above problems.

[0005]

According to the present invention, there is provided a signal generating section having a temperature sensor for generating an electric signal corresponding to a temperature difference between a detected temperature of the temperature sensor and a set temperature. in floor heating controller and a hot water control unit for controlling the amount of hot water supplied from the heat source to the floor heating panel in response to an electrical signal, the signal generator, a very large tilt changes the electrical signal characteristics with respect to the temperature difference Let me
Characteristic varying means is provided that.

[0006]

[Action] As described above, the characteristic variable means for changing the characteristics of the electric signal V with respect to the temperature difference [Delta] T in signal generator unit remote controller and ing provided, by appropriately tilt changes the value of V / [Delta] T, A duty signal is issued from the hot water amount control unit on the valve control device side to the hot water control valve, so that the supply of hot water to the floor heating panel can be appropriately controlled. Also, V / [Delta] T change at a very large child of (is stepped changes the voltage signal serving as a remote control output), so can an additional function of the traditional remote control to the current remote control.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings of the embodiments.

FIG. 1 shows a floor heating apparatus in which three remote controllers are arranged. A heat source unit A includes a hot water heat exchanger 4 having a gas burner 3 connecting a gas source valve 1 and a proportional valve 2. , Outgoing header 1 of hot water pipe 5 derived from hot water heat exchanger 4
The circulation pump 8 provided with the hot water control valves 6A, 6B, and 6C branched and connected through the circulation header 8 and connected to the return header 19 side is connected to return to the hot water heat exchanger. A circulation system in which a floor heating panel 7A serving as each room is connected to the hot water control valve 6A, a floor heating panel 7B is connected to the hot water control valve 6B, and a floor heating panel 7C is connected to the hot water control valve 6C between the going header 18 and the return header 19. Configure the circuit. 9A, 9B, and 9C are remote controllers provided alongside the floor heating panels 7A, 7B, and 7C. The remote controllers 9A, 9B, and 9C are connected to the hot water control valves 6A, 6B, and 9C.
The floor heating controller 20 shown in FIG. 2 is constituted by communicating with a valve control device 10 for controlling 6C. 11 is a valve control device 10
The main body control device 11 is connected to a tap water temperature sensor 12 provided at the outlet of the hot water heat exchanger, the circulation pump 8, the main valve 1, and the proportional valve 2. It becomes a heating device.

Next, the operation will be described. First, the hot water heat exchanged by the combustion heating of the hot water heat exchanger 4 is passed through the hot water pipe 5 through the hot water control valves 6A, 6B, 6C, and the floor heating panels 7A,
A circulation flow path which flows to 7B and 7C and returns from the circulation pump 8 to the hot water heat exchanger 4 is taken.

Here, the floor heating panels 7A, 7B,
When flowing hot water into 7C and performing floor heating, a predetermined remote controller 9 (for example, remote controller 9A) is operated to set a set temperature by the temperature setting device 14. Here, in controlling the opening and closing of the hot water control valve 6A, the signal generator 15 checks the temperature difference between the temperature of the room temperature sensor 13 and the set temperature in the remote controller 9A, and generates an electric signal obtained by converting the temperature difference into a voltage. The A / D timer of the hot water amount control unit 21 which is input to the valve control device 10 operates to guide the duty signal to the hot water control valve 6A.

In this case, the valve control of the hot water control valve 6A is performed with an opening / closing ratio according to the temperature difference, for example, by setting 20 minutes as one unit and opening 5 minutes of the unit (for example, when the ON time is 20 minutes). % To 100%). Here, when the room temperature is low, that is, when the room temperature is lower than the set temperature such as at the start of heating, the opening rate of the hot water control valve 6A is set to 100%, and hot water flows to warm the floor heating panel 7A. Thereafter, as the room temperature gradually approaches the set temperature, the opening time of the valve is shortened.
When the room temperature exceeds the set temperature, the valve opening rate is reduced to the minimum of 20%.
And

Referring now to the block diagram of FIG. 2, the remote controller 9A is provided with a room temperature sensor 13 and a temperature setting device 1.
In addition to the configuration 4, a characteristic variable means 22 including a volume, a switch, and the like is provided. As the room temperature approaches the set temperature, the voltage signal of the signal generator (T / V) 15 of the remote controller 9A decreases linearly. The temperature and voltage characteristics at this time are shown in FIG.
As shown by the solid line. At the beginning of heating, the remote control output is maximum, and in this state, the valve opening is set to 100%. Thereafter, when the temperature enters an area within 2 deg from the set temperature, the voltage of the remote control output decreases linearly (solid inclined line). As a result, the ON time during which the valve is opened becomes short, the amount of hot water supplied is suppressed, and the amount of heat radiation is reduced so that the room temperature becomes stable near the set temperature. Incidentally, this even when more is above room temperature that is close the valve may be (remote control output 0) as.

In this case, if the characteristic varying means 22 is adjusted in advance, the temperature difference and the slope of the electric signal characteristic of the voltage conversion gradually rise with reference to the set temperature (see the chain line in the figure).
When the maximum value is reached (the slope approaches infinity), the characteristic changes to a line directly below (see the dashed line in FIG. 1). This results in a step-like electrical signal characteristic substantially similar to the change in a traditional remote control. If the new remote controller 9 having the characteristic variable means 22 is used, the voltage signal of the old remote controller is changed by changing the temperature voltage characteristic by the variable adjustment.
This is equivalent to a type in which i and Lo are changed stepwise, and an alternative use is possible.

That is, the remote controller 9 of this controller
By making / ΔT variable, it is possible to select room temperature control suited to the installation situation of the floor warming, etc., and by making V / ΔT extremely large, it can be used for both current and conventional controllers. If the lower limit of the output voltage is set to 0, the Hi-Lo-OFF signal is output.
If it is set to o, a Hi-Lo signal can be generated.

[0015]

As described above, the floor heating controller according to the present invention can reduce the temperature difference by incorporating a characteristic variable means in addition to a temperature sensor such as a room temperature sensor and a temperature setting device, in a remote control provided along with the floor heating panel. Moderate electrical signal characteristics
In addition to adjusting the opening and closing time of the hot water control valve, the inclination change must be extremely large.
Accordingly , the present invention has an effect that it can be provided as a substitute for a conventional type remote controller.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a floor heating device showing an embodiment of the present invention.

FIG. 2 is a block diagram of the floor heating controller.

FIG. 3 is a characteristic diagram of room temperature and voltage.

FIG. 4 is an explanatory diagram of the valve opening / closing ratio.

FIG. 5 is a block diagram of a floor heating controller of a conventional floor heating device.

FIG. 6 is a characteristic diagram of room temperature and voltage.

FIG. 7 is an explanatory diagram of the valve opening / closing ratio.

[Explanation of symbols]

 Reference Signs List 6 Hot water control valve 7 Floor heating panel 9 Remote control 10 Valve control device 13 Room temperature sensor 14 Room temperature setting device 20 Floor heating controller 21 Hot water quantity control unit 22 Characteristic variable means

──────────────────────────────────────────────────の Continuing on the front page (72) Hirokazu Izaki 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Shinichi Kasahara 2--18 Keihanhondori, Moriguchi-shi, Osaka (56) References JP-A-58-187729 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24D 3/00

Claims (1)

(57) [Claims] A signal generator for generating an electric signal corresponding to a temperature difference between a temperature detected by the temperature sensor and a set temperature; and a heat source corresponding to the electric signal from the signal generator. In a floor heating controller including a hot water amount control unit that controls the amount of hot water supplied to the floor heating panel,
The signal generator, the pole electrical signal characteristics with respect to the temperature difference
A floor heating controller provided with characteristic changing means capable of changing the inclination greatly .