JPH07198136A - Hot-air heater - Google Patents

Abstract

PURPOSE:To materialize a hot-air heater which brings the heating to a comfortable condition speedily without impairment of its safety. CONSTITUTION:A hot-air heater is equipped with a microcomputer which, only when the room temperature detected by a thermistor 1 in the first stage at the start of the heating operation is below a prescribed point (e.g. 10 deg.C), operates the heat-evolving device 3 at a special maximun output (3,500 kcal/h), which is greater than the maximum output in the steady state (e.g. 3,200 kcal/h), for a certain period of time from the start of the heating operation or, when within this period of time the thermistor 1 detects the room temperature at the above- mentioned prescribed point, until the time of this detection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air heater.

[0002]

2. Description of the Related Art A conventional hot air heater is capable of performing a strong operation for a certain period of time (for example, 3 minutes) from ignition regardless of the room temperature at the start of heating operation, or by changing the wind direction plate or the air volume to improve the heat collecting property. It was improving.

[0003]

However, with this operation control, the temperature of the air in the room may not rise easily only with the heat quantity of the strong operation, which is remarkable especially when the temperature is low in the middle of winter. there were. In addition, even if the temperature of the air in the room rises, there is the problem that real comfort cannot be obtained until the temperature of the load on the floor, walls, windows, etc., rises. In response, the heating output can be changed from strong (3,200 kcal / h) to medium (2,500 kcal / h),
Even if it is controlled to weak (1,800 kcal / h) and fine (1,100 kcal / h), there is a drawback that the discomfort cannot be removed unless the temperature of the floor, walls, windows, etc. of the room rises sufficiently. there were.

[0004]

The present invention has been made to solve the above-mentioned problems, and a hot air heater in which a heating output of a heating element is controlled based on room temperature information detected by a temperature detecting means. When the room temperature detected by the temperature detecting means at the beginning of the heating operation is equal to or less than the predetermined value, the heating element is started at a special maximum output higher than the maximum output during the steady state, and whether a certain time has elapsed after that. Alternatively, the warm air heater is provided with control means for controlling the output of the heating element to return to the steady heating output when either of the room temperature and the predetermined value is satisfied.

[0005]

With this structure, when the room temperature detected by the temperature detecting means is equal to or lower than the predetermined value, the heating element is started to operate with a special maximum output larger than the maximum output during steady state, and thereafter. When either a fixed time has elapsed or the room temperature has reached a predetermined value, the output is returned to a steady output and controlled.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In each figure, 1 is a thermistor as a temperature detecting means for detecting room temperature and outputting room temperature information,
Reference numeral 2 is a microcomputer as a control means, and 3 is a heating element such as a kerosene burner, a gas burner or an electric heater for generating warm air.

In this structure, the microcomputer 2 for driving the heating element 3 is operated only once in the initial stage of operation and only when the room temperature detected by the thermistor 1 is below a predetermined value. Only when the thermistor 1 detects a predetermined room temperature within a certain period of time from the start or during the certain period of time, the heating element 3 is operated and controlled with a special maximum output larger than the maximum output during the steady state until that time. ing. That is, the operation at the special maximum output is performed until either a certain time has elapsed from the start of operation or the room temperature reaches a predetermined value, and when either one is satisfied, the heating element The output is controlled by returning it to the steady heating output.

Specifically, as shown in the flow chart of FIG. 1, if the room temperature detected by the thermistor 1 is 5 ° C., which is a predetermined value or less, such as 10 ° C. at the beginning of the heating operation, the heating operation is started. To the thermistor 1 for a fixed period of time, for example, 15 minutes or 15 minutes.
When the room temperature of 10 ° C is detected, the maximum output of the heating element 3 is larger than the maximum output in the steady state until then, for example, if the steady output of the heating element is 3,200 kcal / h, 1
With the increase of 0% to 3,500 kcal / h, it is necessary to consider that it is not suitable for unlimited continuous operation in relation to the life of the heating element, and the heating element 3 is used only once at the start of operation. The operation is controlled.

Since the construction of the embodiment is such, the temperature rise rate of the room temperature is accelerated, and thereby the temperature rise of the load on the floor, walls, windows, etc. of the room is also relatively accelerated, which is effective for realizing the heating comfort. I was able to give

[0011]

As described above, according to the present invention, it was possible to realize a warm air heater that quickly achieves comfortable heating without impairing safety.

[Brief description of drawings]

FIG. 1 is a flow chart incorporated in a control means of a hot air heater according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a warm air heater according to an embodiment of the present invention.

[Explanation of symbols]

 1 Thermistor 2 Microcomputer 3 Heating element

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Fumihiko Fukaya 3-1, Shinjuyo, Kashiwa-shi, Chiba 1

Claims (1)

[Claims] 1. In a warm air heater in which a heating output of a heating element is controlled based on room temperature information detected by a temperature detecting means, a room temperature detected by the temperature detecting means (1) is predetermined at the beginning of heating operation. When the value is less than or equal to a value, the heating element (3) is started to operate with a special maximum output larger than the maximum output in the steady state, and then either a fixed time has elapsed or the room temperature has reached a predetermined value. A warm air heater comprising a control means (2) for controlling the output of the heating element to return to a steady heating output when satisfied.