JPH0623618B2 - Heater controller - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a heater that varies a heating amount and a heating level display according to room temperature.

2. Description of the Related Art A heater, which is generally called an automatic temperature control type, compares the room temperature detected by a built-in room temperature detector with a set temperature, and automatically switches the heating amount according to the difference in comparison to adjust the temperature. ing. Then, the heating amount is visually indicated by a heating level indicator.

FIG. 3 is a diagram showing a configuration of a conventional heater control device.

Reference numeral 101 denotes a room temperature detecting means, which sequentially detects the room temperature by a signal from the room temperature detector 102. Reference numeral 103 denotes a heating level determining means, which determines the heating level from the temperature difference between the signal which is sequentially changed from the room temperature detecting means 101 and a preset temperature. A heating control unit 104 controls the heating amount based on a signal from the heating level determination unit 103. A display unit 105 displays the heating level based on the output from the heating level determination unit 103. As described above, the conventional heater is configured to keep the room temperature constant by changing the heating amount in response to the room temperature.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described conventional configuration, when there is a subtle change in the room temperature, the heating level changes immediately in response to a change in the room temperature. At the time of the replacement, flickering occurred and was annoying.

The present invention solves such a conventional problem, and an object thereof is to eliminate flicker at the time of switching the display.

Means for Solving the Problems In order to achieve the above object, the controller of the heater of the present invention is
The input signal to the display means is continuously supplied for a certain period of time.

Operation According to the present invention, even if the room temperature slightly changes due to the above configuration, the display means is supplied with data at regular intervals, so that the display does not change at least during that time, and flicker is eliminated. You can

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, in which 1 is a room temperature detecting means which sequentially detects the room temperature by a signal from a room temperature detector 2. Reference numeral 3 is a heating level determining means, which determines the heating level from the temperature difference between the signal which is sequentially changed from the room temperature detecting means 1 and the preset temperature. A heating control unit 4 controls the heating amount based on a signal from the heating level determination unit 3. Data holding means 5 holds the signal from the heating level determining means 3 at regular intervals and supplies the data to the heating level display means 6.

The second time shows an example of a specific circuit of the main part. Reference numeral 7 denotes a microcomputer, which is a one-chip microcomputer having a CPU, a ROM, a RAM, and an input / output unit, and is used as the room temperature detector 2
Also, the heating level is determined by receiving the output from the room temperature setting device 8, the load 9 such as the combustion unit is controlled according to a predetermined program, and a display signal is output to the display unit 10.

Next, the operation will be described with reference to the flowchart of FIG. 3. In step 11, room temperature data is read from the room temperature detector 2 by the room temperature detecting means 1, and the process proceeds to step 12.
In step 12, the heating level determining means 3 calculates the heating level from the difference between the room temperature data read in step and the preset temperature, and the process proceeds to step 13. In step 13, heating control is performed by the heating control means 4 based on the level calculated in step 12, and the process proceeds to step 14. In step 14, the holding timer forming a part of the data holding means 5 is checked for time-up. If the time has not expired, the process proceeds to step 15, and if the time has expired, the process proceeds to step 16. In step 15, the heating level display means 6 retains the previous heating level display, and the process returns to step 11. In step 16, the heating level display is updated by the heating level display means 6 according to the level calculated in step 12 and step 17
Go to. In step 17, the holding timer forming a part of the data holding means 5 is restarted, and the process returns to step 11.

That is, even if the room temperature data read in step 11 fluctuates due to a slight change in room temperature and the heating level changes in step 12, the process proceeds to step 15 until the holding timer expires and the previous heating level display is held. Therefore, flicker can be prevented.

In this embodiment, the data holding means is arranged before the heating level display means, but the data holding means may be arranged after the room temperature detecting means or after the heating detecting means. in this case,
Not only the flicker of the heating level display but also the flicker of the heating level can be prevented.

EFFECTS OF THE INVENTION As described above, according to the present invention, the heating level display does not flicker even if there is a slight change such as room temperature fluctuation, and the display is not obtrusive.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a control device for a heating machine showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing a concrete example of the control device, and FIG.
FIG. 4 is a flow chart of the control device, and FIG. 4 is a block diagram of a control device for a conventional heating machine. 1 ... Room temperature detecting means, 2 ... Room temperature detector, 3 ... Heating level determining means, 4 ... Heating controlling means, 5 ... Data holding means, 6 ... Heating level displaying means.

Claims (1)

[Claims] 1. A room temperature detecting means for detecting a temperature of a heated room, and a heating level determining means for determining a heating level from a temperature difference between room temperature data from the room temperature detecting means and a preset temperature. Heating control means for performing heating based on the output from the heating level determination means, display means for displaying the heating level based on the output from the heating level determination means, and an input signal to the display means for a certain period of time. A control device for a heating machine, which is provided with a data holding means for supplying the electric power.