JPH09178199A - Liquid temperature controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption by reducing the current application percentage to an electric motor. SOLUTION: A combustion type of heater, which has a function of heating liquid such as water, antifreezing solution, etc., is equipped with a floor heating adjusting damper 8 for changing over the discharge path of combustion exhaust gas between a first path and a second path 7, according to the temperature of the liquid temperature, and an electric heater 14 for raising the temperature of the liquid. The first path is one which contributes to the elevation of temperature of the liquid. The second path is one which does not contribute to the elevation of the temperature of the liquid. The current application of the electric heater is turned on or turned off, according to the temperature of the liquid. At that time, a difference is given to the starting temperature of the floor heating adjusting damper and the starting temperature of the on/off of the current application of the electric heater.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion type heater having a function of heating a liquid, and more particularly to a liquid temperature controller for the same.

[0002]

2. Description of the Related Art Conventionally, there has been known a combustion type heater which heats a liquid by using combustion exhaust gas. This type of combustion heater is equipped with a liquid temperature control device for controlling the liquid temperature.
The liquid temperature control device includes a damper as a path switching unit that switches the discharge path of the combustion exhaust gas between the first path that contributes to the increase in the liquid temperature and the second path that does not contribute to the increase of the liquid temperature according to the temperature of the liquid. The heated liquid is supplied to, for example, a floor heating panel or the like, and contributes to so-called floor heating. This warmed liquid may be used for other purposes.

When it is difficult to raise the liquid temperature to a desired value only by using the combustion exhaust gas, an electric heater may be further used. In this case, a switch is provided as an energization control means for turning on / off the energization of the electric heater according to the temperature of the liquid. The switching of this switch is performed in synchronization with the switching of the damper.

[0004]

However, when the switching of the switch and the switching of the damper are synchronized, there is a problem in that the energization rate to the electric heater increases and the power consumption increases.

Therefore, an object of the present invention is to provide a liquid temperature control device which can reduce the power consumption by reducing the energization rate to the electric heater which contributes to the heating of the liquid.

[0006]

According to the present invention, in a liquid temperature control device for a combustion type heater having a function of heating a liquid, a discharge path of a combustion exhaust gas of the combustion type heater is set to the liquid state. According to the temperature of the liquid, a path switching means for switching between a first path that contributes to the increase of the liquid temperature and a second path that does not contribute to the temperature of the liquid, an electric heater for increasing the liquid temperature, and And a start-up temperature for switching the discharge path by the path switching means and a start-up temperature for turning on and off the power supply by the energization control means. A liquid temperature control device is obtained.

[0007]

FIG. 1 shows a combustion type heater equipped with a liquid temperature control device according to an embodiment of the present invention. This combustion type heater is provided with a combustion burner 2 inside a heater housing 1, and kerosene supplied to the combustion burner 2 by an electromagnetic pump 3 is burned with air supplied by a fan 4 to obtain heating. . The combustion exhaust gas generated in the combustion burner 2 is discharged through the room heating heat exchanger 5. The discharge route of the combustion exhaust gas is branched in the middle, and the first route 6 shown by a dashed arrow
And a second path 7 indicated by a solid arrow. The first path 6 is a floor heating adjustment damper 8 as a path switching means.
Can be opened and closed at.

This combustion type heater is provided with a floor heating heat exchanger 9 arranged in the first path 6 for producing hot water. The floor heating heat exchanger 9 is connected to a floor heating panel (not shown) via pipes 11 and 12 and a circulation pump 13. Therefore, by driving the circulation pump 13, it is possible to circulate the liquid heated by the floor heating heat exchanger 9 through the floor heating panel and obtain so-called floor heating.

Further, considering that it is difficult to raise the water temperature to a desired value only by using the combustion exhaust gas, an electric heater 14 is additionally attached to the pipes 11 and 12 so that the water temperature can be further raised. I am doing it. Of course, the energization of the electric heater can be turned on / off by energization control means such as a switch (not shown) according to the temperature of the hot water.

The operation of the liquid temperature controller will be described with reference to FIG. 2 in addition to FIG. Prior to the explanation, the temperature lower than the set temperature by 3.5 degrees is the first temperature, and the temperature lower than the set temperature is 3.0.
A temperature higher than the set temperature is called a second temperature, a temperature lower than the set temperature by 4.0 degrees is called a third temperature, and a temperature higher by 3.5 degrees than the set temperature is called a fourth temperature.

First, at step 21, the water temperature control is started with the floor heating adjustment damper 8 closing the first path 6 and the electric heater 14 turned off. Moving to step 22, it is judged whether or not the current water temperature is equal to or lower than the first temperature. When the current water temperature is equal to or lower than the first temperature, the process proceeds to step 23. The case where the current water temperature exceeds the first temperature will be described later.

In step 23, the floor heating adjustment damper 8 is opened, and the process proceeds to step 24, in which it is determined whether or not the current water temperature is equal to or lower than the third temperature. When the current water temperature is lower than or equal to the third temperature, the electric heater 14 is energized in step 25,
Go to step 26. It should be noted that, when the current water temperature exceeds the first temperature in step 23 and when the current water temperature exceeds the third temperature in step 25, the process proceeds to step 26.

In step 26, it is judged whether or not the current water temperature is equal to or higher than the second temperature. When the current water temperature is lower than the second temperature, the process returns to step 22. When the current water temperature is equal to or higher than the second temperature, the process proceeds to step 27 and the electric heater 14 is de-energized.

Further, in step 28, it is judged whether or not the current water temperature is equal to or higher than the fourth temperature. When the current water temperature is lower than the fourth temperature, the process returns to step 22. When the current water temperature is equal to or higher than the fourth temperature, the floor heating adjustment damper 8 is closed in step 29, and then step 2
Return to 2.

In this way, the starting temperature for switching the discharge path of the combustion exhaust gas by the floor heating adjustment damper 8 and the electric heater 14 are set.
It gives a difference to the starting temperature of turning on and off of energization. As a result, the energization rate to the electric heater 14 can be reduced.

Although the combustion type heater having the function of heating water to generate hot water has been described above, it goes without saying that other liquids such as antifreezing liquid can be used instead of water.

[0017]

As described above, according to the present invention,
It is possible to provide a liquid temperature control device that can reduce the power consumption by reducing the energization rate to the electric heater that contributes to the heating of the liquid.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view of an oil-fired heating machine including a liquid temperature control device according to an embodiment of the present invention.

2 is a flowchart for explaining the operation of the liquid temperature control device shown in FIG.

[Explanation of symbols]

 1 Heater Case 2 Combustion Burner 5 Heat Exchanger for Room Heating 6 First Path 7 Second Path 8 Floor Heating Control Damper 9 Heat Exchanger for Floor Heating 11 Piping 12 Piping 13 Circulation Pump 14 Electric Heater

Claims (3)

[Claims] 1. A liquid temperature control device for a combustion type heating device having a function of heating a liquid, wherein a discharge path of a combustion exhaust gas of the combustion type heating device raises the liquid temperature according to the temperature of the liquid. Path switching means for switching between a contributing first path and a non-contributing second path, an electric heater for raising the liquid temperature, and energization for turning on and off the electric heater according to the temperature of the liquid. A liquid temperature control device including a control means, wherein a difference is provided between a starting temperature for switching the discharge path by the path switching means and a starting temperature for turning on / off the energization by the energization control means. 2. The path switching means selects the first path according to a first temperature, and selects the second path according to a second temperature higher than the first temperature. The energization control unit turns on the energization according to a third temperature lower than the first temperature, and a fourth temperature between the first temperature and the second temperature. The liquid temperature control device according to claim 1, wherein the energization is turned off in accordance with the above. 3. A heating device for heating a floor heating panel by supplying a liquid having a temperature controlled by the liquid temperature control device according to claim 1 or 2.