JPH01181021A - Operation of heating apparatus - Google Patents

Abstract

PURPOSE:To contrive time reduction to reach a prescribed temperature by controlling the temperature of hot water supplied to a radiator to be higher than a set temperature at the time of starting heating and controlling the hot water approximately at the set temperature after the room temperature becomes equal to the prescribed temperature. CONSTITUTION:Second hot water temperature higher than first hot water temperature is set in a hot water control circuit 26, a relay coil 27 is made electrically line by a switch signal from a hot water control part 26, a relay contact 22 is turned on to apply electricity to a damper motor M. When a damper 5 is operated by the application of electricity to the damper motor M, exhaust gas exhausted from a burner 2 is passed from an inflow port 6A to a heat exchanger 6 and flowed to an exhaust passage through an outflow port 6B. Hot water whose temperature is heightened in the heat exchanger 6 is circulated in a floor heating panel 15 and room temperature is gradually increased by the radiant heat of the floor heating panel 15 and a heating apparatus 1. When a room temperature detector 12 detects that the room temperature is increased to be set room temperature, the hot water control part 26 is operated and the first hot water temperature is set instead of the second hot water. Thereafter, combustion is switched according to the change of the room temperature and the room temperature is held approximately at the set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of the Invention The present invention relates to a method of operating a heating device that performs heating by circulating hot water through a radiator such as a floor heating panel.

(b) Conventional technology For example, Japanese Patent Application Laid-Open No. 57-62330 discloses that in a floor heating system that supplies hot water to a floor heater, when heating starts, the surface temperature of the floor heater becomes high. A control system for a floor heating apparatus is disclosed in which the temperature of hot water sent to the floor heating apparatus is controlled, and after the surface temperature reaches a predetermined temperature, the hot water is circulated at a low temperature setting value.

(8) Problems to be Solved by the Invention In the above conventional technology, after the surface temperature of the floor heater rises to the set temperature at the start of heating, even if the indoor temperature has not risen to the set temperature, The hot water supplied to the floor heaters was now controlled at a low temperature, causing a problem in that it took a long time to warm up the room.

An object of the present invention is to supply hot water at a temperature higher than a set temperature to a radiator from the start of heating until the room temperature reaches a predetermined temperature, thereby shortening the time it takes for the room to reach a predetermined temperature.

(d) Means for Solving the Problems In order to solve the above problems, the present invention provides hot water pipes (1
A radiator (floor heating panel) (15) to which 5A) is piped, a heater (heat exchanger) (6) that heats hot water circulated to this radiator (15), and this heater (6) A heater that heats the hot water controller (26) that circulates the warm temperature sent from the heater to the radiator (15) to a set temperature, and sets the temperature of the hot water that is sent from this heater to the radiator (15). After the room temperature reaches a predetermined temperature, hot water is circulated to approximately the set temperature.

(*) From the start of operation heating until the indoor temperature reaches the predetermined temperature, hot water with a temperature higher than the set temperature can be supplied from the heater (6) to the radiator (15), so it is sent indoors from the radiator (15). The amount of heat increases, making it possible to shorten the time it takes for the room to reach a predetermined temperature. Furthermore, after the indoor temperature reaches the set temperature, the temperature of the hot water sent to the radiator (15) is maintained at approximately the set temperature, providing comfortable heating.

(f) Example Hereinafter, an example of the present invention will be described in detail based on the drawings.

In Figure 3, (1) is a heating device such as a radiant heater installed indoors as a heater, (2) is a burner, and (3) is a radiant tube installed above burner (2). . Further, (4) is an exhaust passage defined in the upper part of the case (IA), (5) is a damper provided at an appropriate position in the exhaust passage (4), and (6) is provided in the exhaust passage (4).
The heat exchanger (6A) and (6B) are the exhaust gas inlet and outlet, respectively, to which exhaust gas is sent when the damper (5) is in the broken line position. By switching the damper (5), the exhaust gas is directed either towards the exhaust passage (4a) as shown by the arrow (7) or towards the heat exchanger (6) as shown by the arrow (8). flows. Note that (5A) is a drive shaft driven by a motor (not shown) for driving the damper (5). (10) is a hot water storage tank that stores hot water whose temperature has been increased by the heat exchanger (6), and (11) is a pump that circulates hot water in the hot water storage tank (10). Further, (12) is a room temperature detector, such as a thermistor, which is attached to an appropriate position on the outer surface of the side wall of the case (IA), and (13> is a combustion blower).

(15) is a floor heating panel as a radiator that is laid on the floor of the room and has a hot water vibrator (15A) piped in. There is a return pipe between this floor heating panel (15) and the heat exchanger (6). (
16) is connected, the floor heating panel (15) and pump (1
1) is connected with an outgoing pipe (17). (1
8) is a hot water temperature detector, such as a thermistor, attached to the outgoing pipe (17). Further, (20) is an electrical equipment box that houses a control circuit, etc., which will be described later.

FIG. 1 is a control circuit diagram of the heating device, and the same parts in FIG. 1 as in FIG. 3 are given the same reference numerals. (2
1) is an operating circuit connected to an AC power source (20) via an operating switch (S), and the pump (11), blower (13), etc. are operated by the operation of this operating circuit.

Further, (22) is a relay contact connected in series to the damper motor (M). (23) is a power transformer (24),
and an operation control circuit to which electric power is sent via a DC constant voltage power supply section (25), and this operation control circuit (23) is composed of a microcomputer and has a hot water control section (26).

Further, (27) is a relay fill, (28) is a hot water temperature setting resistor that sets the first hot water temperature that can be completely supplied to the floor heating panel (15) during normal operation, and (29) is a room temperature setting resistor.

Hereinafter, the operation of the above-mentioned heating device will be explained based on the flowchart shown in FIG. When the user of the heating device adjusts the hot water temperature setting resistor (28) and room temperature setting resistor (29), sets the first hot water temperature and room temperature, and turns on the operation switch (S), the operation control circuit (23) is energized and starts operating.Then, the operation circuit (21) operates based on the signal output from the operation control circuit (23), and the burner (2)
starts strong combustion, and the blower (13) and pump (11) start operating. In addition, the hot water control unit (26) inputs temperature signals from the room temperature detector (12) and the hot water temperature detector (18), and inputs each temperature signal and the room temperature setting resistor (29),
and the temperature signal from the hot water temperature setting resistor (28). Similarly, the hot water control circuit (26) sets a second hot water temperature (T: for example 55°C) higher than the first hot water temperature (T: for example 55°C) by 5°C.
T+ΔT (for example, 60°C) is set. In addition, the relay coil (27) is activated by the switching signal from the hot water control unit (26).
) is de-energized, the relay contact (22) turns on, and the damper motor (M) is energized. Damper motor (
When the current is applied to M), the damper (5) moves as shown by the arrow (30) in Figure 3.
). Then, the exhaust gas discharged from the burner (2) passes through the heat exchanger (6) from the inlet (6A) to the exhaust passage (4) via the outlet (6B) as shown by the arrow (8). flows. And heat exchanger (6)
The heated water is circulated to the floor heating panel (15),
The room temperature gradually rises due to radiant heat from the floor heating panel (15) and the heating device (1).

The heat exchanger (6) exchanges heat with the exhaust gas, the temperature of the hot water circulating to the floor heating panel (15) rises, and the hot water temperature detector (18) indicates that the hot water temperature has reached the second hot water temperature. When detected, the hot water control section (26) which receives the temperature signal from the hot water temperature detector (18) operates and no longer outputs the switching signal to the relay coil (27). Then, the relay coil (27) is de-energized, the relay contact (22) is turned off, the damper motor (M) is de-energized, and the damper (5) is moved to the direction indicated by the arrow (3).
0) in the opposite direction. Then, the exhaust gas will appear as an arrow (
As shown in 7), it flows into the exhaust passage (4a), and the heat exchange between the exhaust gas and hot water in the heat exchanger (6>) stops.When the heat exchange in the heat exchanger (6) stops, the floor Heating panel (1
The hot water temperature decreases due to the heat dissipation in 5), and the second lower limit temperature (
For example, when the hot water temperature detector (18) detects that the temperature has reached 58° C., the hot water control circuit (26) operates and outputs a switching signal to the relay coil (27). Then, the relay coil (27) is energized, the relay contact (22) is turned on, the damper motor (M) is energized and operates, and the damper (5) rotates to open the inlet (6A). Exhaust gas flows to the heat exchanger (6). The hot water heated by the heat exchanger (6) then passes through the outgoing pipe (17) and the floor heating panel (1).
5), and the temperature detected by the hot water temperature detector (18) increases. When the hot water temperature detector (18) detects that the hot water temperature has reached the second hot water temperature, the hot water control unit (2) detects that the hot water temperature has reached the second hot water temperature.
6) operates, the damper motor (M) becomes de-energized,
The damper (5) operates as shown by the arrow (31). Then, heat exchange between the exhaust gas and the hot water in the heat exchanger (6) stops, and the temperature of the hot water decreases. Thereafter, the temperature of the hot water flowing into the floor heating panel (15) is maintained at approximately the second water temperature,
The room temperature rises due to radiant heat from the floor heating panel (15) and the radiant heater (1).

The room temperature detector (1) indicates that the room temperature has risen to the set room temperature.
2), the hot water control unit (26) operates and the second
The first hot water temperature is set instead of the hot water temperature.

Further, the combustion in the burner (2) is switched from strong combustion to, for example, weak combustion, and then the combustion is switched in accordance with changes in the room temperature, and the room temperature is maintained at approximately the set temperature. In addition, until now the hot water temperature has been controlled to approximately the second hot water temperature, which is high, so the hot water control unit (26
), the switching signal is no longer output, and the damper (5) closes the inlet (6A).

Then, heat exchange between the hot water and the exhaust gas in the heat exchanger (6) is no longer performed, and the temperature of the hot water flowing into the floor heating panel (15) further decreases below the second lower limit temperature.

When the hot water temperature reaches a first lower limit temperature (for example, 53°C) that is slightly lower than the first hot water temperature, the hot water control section (26) operates according to the temperature signal from the hot water temperature detector (18) and sends a switching signal. Output. This switching signal causes the relay contact (22
) is turned on, the damper motor (M) is energized and operates, and the damper (5) operates to open the inlet (6A). Then, the exhaust gas flows to the heat exchanger (6), and the heat exchanger (6
) to the floor heating panel (15) increases. When the temperature of the hot water reaches the first hot water temperature, the hot water temperature control circuit (26) operates, the damper (5) operates, and the inlet (6A) is closed. As a result, heat exchange in the heat exchanger (6) is no longer performed, and the hot water temperature gradually decreases.

Thereafter, the temperature of the hot water is similarly maintained at approximately the first water temperature by the operation of the damper (5), the amount of radiant heat from the floor heating panel (15) is also maintained approximately constant, and the room temperature is also maintained approximately at the set temperature. .

When the user turns off the operation switch (S) after the time has elapsed, the operation control circuit (23) becomes de-energized and the burner (
2) stops combustion, and at the same time, the blower (13) and pump (11) stop operating.

Thereafter, when the user turns on the operation switch (S), the heating device (1) starts operating similarly to the above embodiment. Further, when the user changes the first hot water temperature, the second hot water temperature is automatically set accordingly.

Since the present invention is a method of operating a heating device as described in the above embodiment, when heating is started, the hot water temperature is automatically controlled to a second hot water temperature higher than the first hot water temperature set by the user, and the temperature is increased. Since hot water is sent to the floor heating panel (15), the radiant heat from the floor heating panel (15) at the start of heating can be increased, and this radiant heat quickly raises the indoor temperature, increasing the time it takes to reach the set temperature. It is possible to shorten the time. In addition, after the room temperature reaches the set temperature, the hot water temperature is approximately maintained at the first hot water temperature set by the user, so that comfortable heating can be performed by the floor heating Banerque 15). Furthermore, at the start of heating, the inlet (
The opening time of 6A) becomes longer, and the exhaust gas can be used more effectively.

In the above embodiment, a heating device was described in which hot water whose temperature has been increased by a heat exchanger (6) provided in a radiant heater (1) is flowed through a floor heating panel (15) to perform heating, but the present invention is not limited to the above-described embodiment; for example, a heating device that circulates hot water to a user-side heat exchanger installed indoors and heats the room with warm air from the user-side heat exchanger can be used in accordance with the above-mentioned embodiment. Similar effects can be obtained by circulating in the same manner. Further, the hot water heater may be, for example, a boiler such as a water heater.

(G) Effects of the Invention Since the present invention is a method of operating a heating device configured as described above, when heating starts, hot water at a temperature higher than the hot water temperature set by the user is supplied until the room temperature reaches the set temperature. By circulating the heat to the radiator, the amount of heat released from the radiator into the room can be increased, and the room temperature can be raised quickly. As a result, the time it takes for the room temperature to reach the set temperature can be shortened.
Moreover, once the room temperature reaches the set temperature, hot water at approximately the set temperature is circulated through the radiator to provide comfortable heating desired by the user.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a control circuit diagram of a heating device, FIG. 2 is a flowchart for explaining the operation of the heating device, and FIG. 3 is a flowchart for explaining the operation of the heating device. 4 is an explanatory diagram of the configuration of the heating device, and FIG. 4 is a temperature characteristic diagram from the start of operation of the heating device. (6)... Heat exchanger (heater), (15)... Floor heating panel (radiator), (15A)... Hot water pipe, (26)... Hot water control section.

Claims (1)

[Claims] 1. A radiator equipped with a hot water pipe, a heater that heats the hot water that is circulated through the radiator, and a hot water control unit that controls the temperature of the hot water sent from the heater to the radiator to a set temperature. The heating device is characterized in that when heating starts, the temperature of hot water supplied to the radiator is controlled to be higher than a set temperature, and after the room temperature reaches a predetermined temperature, the hot water is controlled to approximately the set temperature. How to operate a heating system.