JPH05149532A - Controller for warm air space heater - Google Patents

Abstract

PURPOSE:To perform a comfortable space heating by inputting a room temperature and a radiation amount, calculating a predicted mean report index (PMV) value, controlling a burner, a convection fan in response to a difference from a target value, and displaying a gist if the value is out of a predetermined value. CONSTITUTION:A PMV value calculator 11 inputs a room temperature detected by a room temperature detector 2, a radiation amount detected by a radiation amount detector 8, a combustion amount of a burner 4, an air flow rate of a convection fan 5 and a louver angle of a louver 10 and calculates a PMV value. A combustion amount setter 12 compares the PMV value from the calculator 11 with a target PMV value 13, controls the combustion amount of the burner 4, the air flow rate of the fan 5, and controls the louver angle of the louver 10. A display unit 16 displays the gist such as flashing when the PMV is out of a predetermined value. Thus, a space heating in which thermal balance of a human body is provided is performed to prevent reliability failure for an apparatus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for a hot air heater which can heat a space to be heated in a comfortable state.

[0002]

2. Description of the Related Art Conventionally, a control device for a hot air heater of this type has generally been constructed as shown in FIG. Hereinafter, the configuration will be described. 1 is a temperature setting unit for the user to set the temperature of the room (heated space), 2 is a room temperature detecting unit for detecting the temperature of the room, 3 is a combustion control unit, and the temperature setting unit. 1
And the output of the room temperature detection unit 2 are input to control the operations of the combustion unit 4 and the convection fan 5. The combustion unit 4 has an electromagnetic pump 6 that supplies fuel to a burner (not shown) and a burner fan 7 that supplies air to the burner. A convection fan 5 discharges the air heated by the burner as hot air.

To explain the operation of the above configuration, when the room temperature detected by the room temperature detecting section 2 is considerably lower than the temperature set by the temperature setting section 1, the combustion control section 3 causes the combustion section 4 to operate.
Is instructed to perform strong combustion, and the convection fan 5 is driven at a high rotation speed, and as the temperature approaches the set temperature, the combustion amount of the combustion section 4 is weakened and the convection fan 5 is driven at a low rotation speed. Thereby, the room temperature was controlled so as to reach the set temperature.

[0004]

In such a conventional controller for a warm air heater, since the combustion amount of the combustion section 4 and the air amount of the convection fan 5 are controlled only at room temperature, the wall surface of the space to be heated is controlled. However, there is a problem that comfort is not satisfied because it becomes too hot or too cold depending on the presence or absence of radiant heat such as cold heat from the floor surface or solar heat.

Therefore, the inventor of the present invention provides a PMV calculating unit for detecting the radiant heat and calculating a PMV (predicted average declaration index) value based on the radiant amount and the room temperature, and the PMV value from the PMV calculating unit is 0. A control device for controlling the combustion unit 4 and the convection fan 5 so as to achieve the (target PMV value) was considered. Since this PMV value control takes radiant heat into consideration, it can heat the human body in a neutral state where the heat is well balanced and is neither hot nor cold, and more comfortable heating than the conventional method of controlling the room temperature to the set temperature. It will be possible. However, in this control method, the room temperature when the PMV value is 0 when comfortable varies depending on the amount of radiant heat, so it is not possible to display the comfort level on the temperature display. Therefore, when the PMV value falls within the predetermined value, this is displayed. A display unit is provided.

When a hot air heater of such a control system is used at the beginning of autumn or early spring, it may already be in a comfortable state at the beginning of heating at the beginning of autumn or early spring, so that the combustion immediately becomes the minimum combustion, From the comfortable state, if the combustion is continued even though the combustion is minimal, it becomes too hot and becomes uncomfortable. Therefore, the display on the display unit immediately displays the uncomfortable state before or after displaying the comfortable state at the start of combustion, and if the user misses the comfortable state display at the start of combustion, the display will show the uncomfortable state forever. There was a problem of disbelief in the equipment because it was supposed to be displayed and it would not be comfortable forever despite heating.

The present invention has been made in view of these problems, and an object thereof is to enable comfortable heating without impairing the reliability of the equipment.

[0008]

In order to achieve the above object, the present invention has a room temperature detecting section for detecting a room temperature, a radiation detecting section for detecting a radiation amount, and a PMV value by inputting the room temperature and the radiation amount. From the PMV calculation unit that compares the PMV output from the PMV calculation unit with the target PMV value and controls the combustion unit and the convection fan according to the difference between the PMV output and the PMV calculation unit. A determination unit that determines whether the PMV output is within a predetermined PMV value determined in advance, and if the output from the determination unit is a PMV value within the predetermined value, this is displayed on the display unit. If the output is outside the predetermined value on the plus side, the display on the display unit is different from the display within the predetermined value.

[0009]

According to the present invention, by the above-mentioned means for solving the problems, it is possible to heat the human body in a comfortable state in which the human body is thermally balanced according to the state of the space to be heated, and the PMV value is above the predetermined value. Then, the display on the display unit can be made to be different from the display at the time of comfort by, for example, blinking so that the user can be informed that the user is already in the comfortable state.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

In the figure, reference numeral 8 denotes a radiation detection unit for detecting the amount of radiation from the wall surface of the space to be heated, which is attached to the front surface of the device body 9. Reference numeral 10 is a louver, which controls the emission direction of hot air. Reference numeral 11 denotes a PMV calculation unit, which detects the room temperature detected by the room temperature detection unit 2 and the radiation detection unit 8
The amount of radiation detected by, the amount of combustion of the combustion unit 4, the amount of air of the convection fan 5, and the louver angle of the louver 10 are input.
Calculate the V value. Here, PMV is a thermal sensation index established by the ISO (International Organization for Standardization), and quantitatively evaluates the comfort level from the temperature, humidity, air flow, radiation amount and human clothing amount, activity amount. When PMV = 0, the human body is in a thermally balanced state, and 95% or more of the people feel comfortable. Reference numeral 12 is a combustion amount setting unit that sets the PMV value from the PMV calculation unit 11 to a target PMV value unit (PMV = 0 unit).
13, the combustion amount of the combustion unit 4 and the air flow amount of the convection fan 5 are controlled according to the difference, and further, the louver angle of the louver 10 is controlled. Reference numeral 14 is a determination unit that determines whether the output of the PMV calculation unit 11 is within a predetermined value, and 15 is displayed on the display unit 16 when the output that the PMV value is within the predetermined value is input from the determination unit 14. In the display control unit, when the PMV value is outside the predetermined value on the plus side (for example, +1 or more), the display unit 16
The display in is different from the display within the predetermined value, for example, blinking.

The combustion amount of the combustion unit 4 input to the above-mentioned PMV calculation unit 11, the air flow rate of the convection fan 5, and the louver 1 are input.
As the louver angle of 0, a value controlled by the combustion amount setting unit 12 is input.

On the other hand, a burner 18 is provided inside the equipment main body, and the electromagnetic pump 6 supplies the fuel (kerosene) in the tank 19 to the burner 18 and the burner fan 7 supplies the optimum amount of air for combustion. When controlling the fuel supply amount of the electromagnetic pump 6, the duty ratio of the voltage applied to the electromagnetic pump 6 is controlled by the output of the combustion amount setting unit 12, and the rotation speed of the burner fan 7 is controlled by the phase control to rotate the motor 20. Control the number. The convection fan 5 is provided in the rear portion of the device body 9, and the air heated by the burner 18 is adjusted in the discharge direction by the louver 10 and is discharged from the outlet 21 as hot air. When controlling the amount of discharged air, the rotation speed of the motor 22 is controlled by phase control by the output of the combustion amount setting unit 12.

As shown in FIG. 4, the PMV calculation unit 11
The input layer 23, the intermediate layer 24, and the output layer 25 are composed of a three-layered neural network, and the room temperature, the amount of radiation, the amount of combustion, the amount of airflow, the louver angle, and a fixed value are input, and the PMV value is output from the output layer 25. .. Here, the relationship between the room temperature, the radiation amount, the combustion amount, the air amount, the louver angle, the fixed value and the PMV value is processed by fuzzy inference. At that time, a teacher signal is input to the output layer 22, learning is performed using an error from the estimated PMV value, and the optimum PMV value according to the input is output.
In addition, the fixed value is fixed among the factors that determine the PMV value, because the amount of clothing, activity, etc. of human beings are large because of individual differences due to age, sex, living environment, etc. Is.

The operation of the above configuration will be described. At the start of heating, when the room temperature, the wall surface in the room, the floor surface, and the like are low, the output of the PMV calculation unit 11 is -3 (cold) or -2 (cool). And the combustion amount setting unit 12 displays PMV
The combustion amount of the combustion unit 4 is controlled to increase so that the PMV value from the calculation unit 11 becomes 0, which is the target value. When the degree of comfort in the room increases (for example, the temperature increases), the PMV value from the PMV calculation unit 11 approaches 0, and the combustion amount setting unit 12 controls the combustion amount, the air flow amount, the louver angle, etc. accordingly. ,
You will be able to maintain a comfortable state. Then, when the PMV value falls within a predetermined value, for example, within plus or minus 0.9, the display control unit 15 turns on the display unit 16 or changes the color of the display unit 16 if already turned on, for example, changes from red to green. It indicates that you are in a comfortable state.

On the other hand, when heating is already in a comfortable state at the start of heating, the output of the PMV calculation unit 11 is within plus or minus 0.9, and the combustion amount setting unit 12 instructs the heating at the minimum combustion amount and the display control. The unit 15 lights up the display unit 16 or changes it to green to notify it.

At this time, although the combustion amount is the minimum amount, as long as the combustion is continued, the temperature continues to rise in the autumn and early spring, and after a while, an uncomfortable state, that is, PM from the PMV calculation unit 11 is generated.
The V value becomes +1 or more. Even in the case described above, the PMV value becomes +1 or more when the heating load is small.

However, in this case, the PMV calculation unit 11
When the PMV value from 1 is, for example, +1 (slightly warm) or more, the display control unit 15 issues a blinking command to blink the display on the display unit 16. As a result, the user knows that he / she is currently in a comfortable state and does not feel distrust of the device even if the display on the display unit 16 does not change to a display in the comfortable state. Then, the user becomes aware that he is currently in a comfortable state and can take necessary measures such as stopping combustion.

[0019]

As is apparent from the above embodiments, according to the present invention, the room temperature detecting section for detecting the room temperature, the radiation detecting section for detecting the radiation amount, the room temperature and the radiation amount are inputted and P
A PMV calculation unit that calculates an MV value, a PMV output from the PMV calculation unit that compares the PMV output with a target PMV value, and a combustion amount setting unit that controls the combustion unit and the convection fan according to the difference between them.
If the output of the PMV output from the PMV calculation unit is a PMV value within a predetermined value and a determination unit that determines whether the PMV output is within a predetermined PMV value set in advance, this is determined. In addition to displaying on the display unit, if the output on the plus side is out of the predetermined value, the display on the display unit is configured to be a display different from the display within the predetermined value. Not only can it be controlled so that it can be heated to a neutral state where the heat balance of the human body is balanced according to the state of the heating space and it is neither hot nor cold, but it is already in a comfortable state at the beginning of heating and it is uncomfortable if combustion continues as it is When this happens, the user can be informed of this condition by the display on the display, preventing the loss of reliability of the equipment and allowing the user to stop the combustion. It is possible to eliminate the waste.

[Brief description of drawings]

FIG. 1 is a block diagram of a controller for a hot air heater according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a warm air heater equipped with the same control device.

FIG. 3 is an enlarged cross-sectional view of a combustion part of a warm air heater equipped with the control device.

FIG. 4 is a block diagram of a PMV calculation unit of the control device.

FIG. 5 is a block diagram of a conventional controller for a hot air heater.

[Explanation of symbols]

 2 Room temperature detection unit 4 Combustion unit 5 Convection fan 8 Radiation detection unit 11 PMV calculation unit 12 Combustion amount setting unit 14 Judgment unit 15 Display control unit 16 Display unit

Claims (2)

[Claims] 1. A room temperature detecting unit for detecting a room temperature, a radiation detecting unit for detecting a radiation amount, a PMV calculating unit for calculating a PMV value by inputting the room temperature and a radiation amount, and a PMV from the PMV calculating unit. The output is compared with the target PMV value, and the combustion amount setting unit that controls the combustion unit and the convection fan according to the difference, and whether the PMV output from the PMV calculation unit is within a predetermined PMV value determined in advance. If the output from the determination unit and the output from the determination unit is a PMV value within a predetermined value, this is displayed on the display unit, and if the output is outside the predetermined value on the plus side, A control device for a hot air heater, comprising: a display control unit that makes a display on a display unit different from a display within a predetermined value. 2. The control device for a hot air heater according to claim 1, wherein the PMV calculation unit is configured by a neural network that inputs a room temperature, a radiation amount, a combustion amount, an air amount, etc. and outputs a PMV value.