JPH06137681A - Control device for heater - Google Patents

Abstract

PURPOSE:To make a comfortable heating environment in compliance with a body felt temperature by a method wherein temperatures at a floor and walls and the like are accurately detected, radiation temperature is allowed for in performing a room temperature control. CONSTITUTION:There are provided a room temperature sensing means 8, a mounting surface temperature sensing means 9 for sensing a mounting surface temperature, a judgment means 12 for comparing and judging temperature differences and a surrounding air temperature inputting means 16 for inputting an estimated surrounding air temperature. After reaching the set temperature, if the temperature difference judged by the judgement means 12 is less than a predetermined value, a predetermined correction value in response to the estimated surrounding air temperature inputted by the surrounding air temperature inputting means 16 is adjusted to a room temperature or the set temperature so as to perform a room temperature control. With such an arrangement as above, radiation heats at the floor and walls and the like can be accurately detected and thus it is possible to provide a control device for a heater in which a comfortable heating with no over-heating without changing the body felt temperature in an energy saving state in obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a heater, which is capable of performing comfortable room temperature control.

[0002]

2. Description of the Related Art Conventionally, a control device of this type has a first temperature sensor for detecting an ambient temperature in a room, a device body or a room wall as disclosed in Japanese Patent Laid-Open No. 62-194161. And a second temperature sensor that detects the temperature of the first temperature sensor, and the temperature detected by the first temperature sensor is adjusted by a correction temperature calculated based on the temperature difference between the first temperature sensor and the second temperature sensor as a reference room temperature. , There were those that controlled the combustion equipment according to this standard room temperature.

In this device, the first temperature sensor is provided on the combustion air intake side of the instrument body to detect the ambient temperature in the room, and the second temperature sensor is provided on the front face of the instrument body. It detects the ambient temperature of the main body or the wall of a room. Then, the room temperature detected by the first temperature sensor is adjusted based on the temperature difference between the first temperature sensor and the second temperature sensor to obtain a corrected temperature, and the combustion appliance is controlled with this temperature as the reference room temperature. , Perform room temperature control considering the ambient temperature of the equipment body, walls, floor, etc.

Further, like the combustion control device for a heating machine disclosed in Japanese Utility Model Laid-Open No. 2-69247, an object temperature detector for detecting an object temperature such as a wall forming a room is provided, and the detected temperature and the room temperature are set. Some of them are provided with a combustion control means for increasing or decreasing the combustion intensity according to the temperature difference between them, and the room temperature control is performed in consideration of the object temperature of a room such as a wall as in the conventional example.

[0005]

However, in such a conventional control device, the second example for detecting the ambient temperature of the appliance body or the wall of the room in the former conventional example.
The temperature sensor is attached to the front of the instrument body,
Further, since the object temperature detector in the latter conventional example is attached to the rear surface of the heater body, the influence of hot air in the body after the start of operation is large, and the object temperature of the wall or the like is accurately detected. Was impossible.

Further, since the detected room temperature and the combustion intensity are corrected up and down only by the temperature difference between the two sensors, the room temperature is lowered before the wall is warmed, or the room temperature is sufficiently warmed. Nevertheless, the room temperature is still high, and the user had to perform a troublesome operation such as changing the set temperature each time.

The present invention has been made in order to solve the above problems, without increasing the cost.
A heater that can accurately detect the temperature of walls, floors, etc. and that is always comfortable and energy-saving without changing the sensible temperature from the start of heating to long-time operation only by operating the heater. The purpose is to obtain a control device.

[0008]

According to the present invention, there is provided a control device for a heater, including a room temperature detecting means for detecting a room temperature and an installation surface temperature detecting means for directly or indirectly detecting a temperature of an installation surface of the heater. And an outside air temperature input means for inputting an expected outside air temperature, and a judgment means for comparing and judging the temperature difference between the room temperature detected by the room temperature detection means and the installation surface temperature detected by the installation surface temperature detection means, and the room temperature is After reaching the set temperature,
When the temperature difference determined by the determination means is within a predetermined value, the room temperature or set temperature detected by the room temperature detection means is a correction value which is predetermined based on the expected outside air temperature input by the outside air temperature input means. The room temperature is controlled by adjusting the temperature.

[0009]

In the control device of the present invention, after the room temperature reaches the set temperature, the temperature difference between the temperatures detected by the room temperature detecting means and the installation surface temperature detecting means becomes small, and when the difference is within a predetermined value, The room temperature is controlled to be gradually lowered according to the expected outside air temperature input by the outside air temperature input means.

[0010]

【Example】

Example 1. An embodiment of the present invention will be described below. 1, 2 and 3, 1 is a main body of a warm air heater, 2 is a bottom plate of the bottom of the main body, 3 is a combustor attached to the upper surface of the bottom plate 2, and 4 is provided above the combustor 3. A combustion cylinder, 5 is a partition plate that divides and forms a storage portion of a cartridge tank (not shown) in the main body 1, 6 is a control circuit unit attached to the outer surface of the partition plate 5, and controls combustion, 7 is the main body 1
A blower fan that is attached to the back of the main body 1 and mixes the hot air in the combustion cylinder 4 with the cool air taken in from the back and discharges it as warm air to the outside. 8 is a room temperature thermistor that is attached to the back of the body 1 and detects the room temperature, Reference numeral 9 is a floor temperature thermistor for looking in the floor surface direction from a hole 2a formed in the bottom plate 2 to detect the temperature of the floor surface or radiant heat. 10 is the floor temperature thermistor 9 for the bottom plate 2
It is a fixture that is fixed to.

FIG. 4 shows an electric circuit diagram of the control circuit section 6.
In FIG. 4, the detected temperatures of the room temperature thermistor 8, the floor temperature thermistor 9, the information of the room temperature setting volume 11 and the outside air temperature input volume 16 are converted into a voltage and input to a microcomputer 12 (hereinafter referred to as a microcomputer). The microcomputer 12 has an A for processing these pieces of information.
A / D converter circuit, a memory, a CPU, etc., the output of which is used to inform the user of the room temperature and operating conditions, and a control element 1 for controlling the combustion amount of the combustor 3.
4. A control element 15 for controlling the amount of air blown by the blower fan 7 is connected. Further, reference numeral 17 is an oscillator for creating an internal clock of the microcomputer 12 and a reference time of a timer. The room temperature detection means corresponds to the room temperature thermistor 8, the installation surface temperature detection means corresponds to the floor temperature thermistor 9, the outside air temperature input volume 16 corresponds to the outside air temperature input means, and the CPU of the microcomputer 12 corresponds to the determination means.

Next, the operation will be described with reference to the flowchart of FIG. First, when the operation switch (not shown) is turned on, the combustor 3 and the blower fan 7 operate to start heating (step 20), and then the expected outside air temperature is input by the outside air temperature input volume 16, and the microcomputer It is stored in the memory in 12. When the room temperature detected by the room temperature thermistor 8 rises with the start of heating and reaches the set temperature, the combustion amount of the combustor 3 is reduced by the control signal from the microcomputer 12 and the room temperature is controlled to reach the set temperature ( Step 22). The preset temperature is microcomputer 1
2 is set in the memory, or the user sets a desired temperature before heating starts.

When heating starts and the room temperature reaches the set temperature, the microcomputer 12 then takes in the detected temperatures of the room temperature thermistor 8 and the floor temperature thermistor 9 and calculates the temperature difference (step 23). The air temperature in the room warms up quickly with warm air, but the temperature of the floor, walls, etc. does not warm up easily, so the temperature difference is large in the initial stage of heating.

When the temperature of the floor or the wall rises with the passage of time and the radiant temperature rises, the user is affected by the radiant heat and feels quite warm even at the same room temperature. When the temperature difference between the room temperature thermistor 8 and the floor temperature thermistor 9 is within 3 ° C., the CPU of the microcomputer 12 judges this and corrects the initial set temperature to be slightly lower to keep the sensible temperature constant and not to overheat. Such room temperature control is performed. Specifically, it is determined whether the predicted outside air temperature input by the user after heating starts is higher or lower than the reference outside air temperature (step 24), and when it is higher, the set temperature is corrected by 1 ° C. lower (step 25). ), If it is low, correct it by 2 ° C.

In the above embodiment, the temperature difference between the room temperature thermistor 8 and the floor temperature thermistor 9 is set to 3 ° C., and the set temperature is gradually lowered according to the input value of the expected outside air temperature. The detected room temperature may be corrected in the same manner to control the room temperature to gradually decrease. Further, the level of the reference outside air temperature may be divided into a plurality of levels and compared with the expected outside air temperature, and the temperature difference between the room temperature thermistor 8 and the floor temperature thermistor 9 for decreasing the set temperature may be changed.

FIG. 6 shows the relationship between the average floor surface temperature of the room and the floor surface temperature below the bottom plate 2 of the heater. Since the floor surface is where the human body directly touches, and also represents the temperature of the wall in the room, the temperature sensation felt by the human body can be accurately known by measuring the radiation temperature of the floor surface. Therefore, by mounting the floor thermistor 9 on the bottom plate 2 which is the lowest in the heater and bringing it into contact with or close to the floor, it is possible to know the average temperature of the room inexpensively and accurately.

[0017]

As described above, according to the present invention, when the temperature difference between the temperature detected by the room temperature detecting means and the temperature detected by the installation surface temperature detecting means reaches a predetermined value after reaching the set temperature, the outside air temperature is lowered. A predetermined correction value based on the expected outside air temperature input by the input means is detected to adjust the room temperature or the set temperature to control the room temperature, so the radiation temperature of the floor or wall can be accurately detected at low cost. In addition, the room temperature can be controlled comfortably by saving energy without overheating without changing the sensible temperature.

[Brief description of drawings]

FIG. 1 is a rear view of a heater according to an embodiment of the present invention.

FIG. 2 is a structural diagram of a heater according to an embodiment of the present invention.

FIG. 3 is a partially enlarged view of the heater according to the embodiment of the present invention.

FIG. 4 is an electric circuit diagram of a heater according to an embodiment of the present invention.

FIG. 5 is a control flow chart of the heater according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a relationship between a floor surface temperature of an installation surface of a heater and an average floor surface temperature.

[Explanation of symbols]

 8 Room temperature thermistor 9 Floor temperature thermistor 11 Room temperature setting volume 12 Microcomputer 16 Outside air temperature input volume

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masako Takano, 800 Iwamatsu, Oshima-cho, Nitta-gun, Gunma Sanryo Electric Co., Ltd. Gunma Manufacturing (72) Inventor Kiyoshi Nakagawa 800, Iwamatsu, Ojima-machi, Nitta-gun, Gunma Address Sanryo Electric Co., Ltd.Gunma Plant (72) Inventor Yuichi Taniguchi 800 Iwamatsu, Oshima-cho, Nitta-gun, Gunma Sanryo Electric Co., Ltd. Gunma Plant (72) Terumo Mogi Oshima-cho, Nitta-gun, Gunma Prefecture 800 Iwamatsu Sanryo Electric Co., Ltd.Gunma Works (72) Inventor Sanae Tomita 800 Iwamatsu Oita-machi, Nitta-gun Gunma Prefecture Iwamatsu 800 Sanryo Electric Co., Ltd. Gunma Works

Claims (3)

[Claims] 1. A room temperature detecting means for detecting room temperature,
Installation surface temperature detection means for directly or indirectly detecting the temperature of the heater installation surface, outside air temperature input means for inputting the expected outside air temperature, room temperature detected by the room temperature detection means and installation detected by the installation temperature detection means The temperature difference between the surface temperature and the determination means for comparing and determining, when the room temperature detected by the room temperature detecting means reaches a set temperature, when the temperature difference determined by the determining means reaches a predetermined value, The room temperature control is performed by adjusting a predetermined correction value based on the expected outside air temperature input by the outside air temperature input means to the room temperature or the set temperature detected by the room temperature detection means to perform room temperature control. Control device. 2. The control of the heating machine according to claim 1, wherein when the input expected outside air temperature is lower than the reference outside air temperature, the correction value is increased, and when it is high, the correction value is decreased. apparatus. 3. The control device for the heating machine according to claim 1, wherein the reference outside air temperature level is divided into a plurality of levels and compared with the expected outside air temperature, and the correction value is changed.