JPH05149534A - Controller for warm air space heater - Google Patents

Abstract

PURPOSE:To improve comfort in a controller for a warm air space heater. CONSTITUTION:The controller for a warm air space heater comprises a PMV value calculator 11 which inputs a room temperature and a radiation amount and calculates a PMV value, a combustion amount setter 12 which compares a PMV output from the calculator with a target PMV value, controls a burner 4 and a convention fan 5, and a target PMV setter 13 for setting the target PMV value to a higher value if the PMV output from the calculator falls within a predetermined PMV value. Accordingly, when a PMV value does not become the target PMV value at the time of starting f heating, it can be room heated to a neutral state of a thermal balance of a human body neither too hot nor to cold to match a state of a space to be, heated. In addition, when the PMV value always falls within the predetermined value at the time of starting space heating, the target PMV value is set higher. Accordingly, the combustion amount is so set higher as to become the target PMV value by the combustion amount setter, thereby rapidly and effectively performing space heating to realize a comfortable state for users.

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) was considered. 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.

Since this PMV value control takes into consideration radiant heat, it can heat the human body in a neutral state in which the human body is thermally balanced and is neither hot nor cold, and is more comfortable than the conventional method of controlling the room temperature to the set temperature. Heating is possible.

However, in such a control system, it may feel cold even in the comfortable state of PMV = 0 defined by this control system. Especially in the beginning of autumn, since the user is not cold, heating may be performed even if it gets a little cold. In this case, the warm air heater of such a control method may already be in the comfortable state defined by this control method at the start of heating even if the user himself thinks it is cold and is using it. Combustion quickly becomes the minimum combustion, and it is considered that it is difficult for the user to be comfortable.

The present invention has been made in view of the above points, and when there is a signal that the user is already comfortable at the start of heating, the PMV value is set to a high value so that the user can quickly and surely feel comfortable. It is intended to be

[0009]

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. A PMV calculation unit that calculates the PMV output, 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, and a heating start PMV calculation unit And a target PMV setting unit that sets the target PMV value to a higher value if the PMV output from is within a predetermined PMV value.

[0010]

According to the present invention, the target PMV value is set to a high value when the heating is already started within the predetermined PMV value by the means for solving the above problems.
The combustion amount is set to a high value so that the value can be quickly and reliably heated to a comfortable state for the user.

[0011]

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 detecting unit for detecting the amount of radiation from the wall surface of the space to be heated and the like, 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. A combustion amount setting unit 12 compares the PMV value from the PMV calculation unit 11 with the target PMV set by the target PMV setting unit 13, and according to the difference, the combustion amount of the combustion unit 4 and the air flow of the convection fan 5. Control the louver 1
Controls the louver angle of 0.

Here, the target PMV setting unit 13 sets the target PMV value based on the PMV value output from the PMV calculation unit 11 at the start of heating.
If the PMV value from the PMV calculation unit 11 is within ± 0.5 of the initial setting value, for example, it is set to a higher value such as +1; otherwise, it remains at ± 0.5 of the initial setting value. It is supposed to do. That is, after the operation switch is turned on as shown in the flowchart of FIG. 2, the PMV is reached when a predetermined time, that is, a time until combustion starts (heating starts).
It is confirmed whether or not the PMV value from the calculation unit 11 is within ± 0.5 of the initial setting value. If it is within 0.5, the target PMV value is set to the higher +1. It is set to 0.5 as it is.

It should be noted that the combustion amount of the combustion unit 4 input to the PMV calculation unit 11, the air flow amount of the convection fan 4, 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 apparatus 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 at the rear part of the main body of the device, and the air heated by the burner 18 is adjusted in the discharge direction by the louver 10 and is discharged as hot air from the air outlet 21. When controlling this discharge air volume, the combustion amount setting unit 1
The output of 2 controls the rotation speed of the motor 22 by phase control.

As shown in FIG. 5, the PMV calculator 11 is
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 25, learning is performed using an error from the estimated PMV value, and an 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. First, when the operation switch is turned on to start the operation, combustion is started and heating is started after a predetermined time according to a predetermined sequence. At this point, the target PMV setting unit 13 determines whether the PMV output from the PMV calculation unit 11 is within the initial PMV value (plus or minus 0.5), and sets the target PMV value. That is, if it is outside the initial PMV value, the initial PMV value is set as the target PMV value, and if it is within the initial PMV value, the target PMV value is increased (+1).

Therefore, even if the room is already in the initial PMV value at the beginning of autumn when heating is started, in this case, the target PMV value is set to a higher value of +1. Controls the louver angle to a strong state.
Therefore, when the user thinks that the user is cold and starts heating, the heating must be performed with a strong strength or a capability close to this, and the heating is rapidly performed and the user feels comfortable.

When the temperature of the room temperature, the wall surface of the room, the floor surface, etc. is low at the start of heating and is out of the initial PMV value, the initial P
The MV value becomes the target PMV value, and the combustion amount setting unit 12 controls the combustion amount and the like to a strong state so that the MV value becomes the target PMV value (plus or minus 0.5). Then, when the comfort level in the room increases (for example, the temperature increases), the PMV value from the PMV calculation unit 11 approaches within ± 0.5, and accordingly, the combustion amount setting unit 12 causes the combustion amount, the air amount,
By controlling the louver angle, etc., you will be able to maintain a comfortable state.

[0020]

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.
The PMV output from the PMV calculator at the start of heating is the predetermined PM
Target PM If the V value is within the V value, the target PM to set the V value to a higher value
With the configuration including the V setting unit, when the predetermined PMV value is not reached at the time of heating start, the human body is thermally balanced according to the state of the space to be heated and heating is performed in a neutral state that is neither hot nor cold. Of course, it is possible to set the target PMV value to a higher value when it is already within the predetermined PMV value at the start of heating. Therefore, the combustion amount setting unit should set the combustion amount to a high value so that the target PMV value is reached. Therefore, it is possible to quickly and surely perform heating in a comfortable state for the user.

[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 flowchart showing the operation of the control device.

FIG. 3 is a vertical cross-sectional view of a warm air heater equipped with the control device.

FIG. 4 is an enlarged cross-sectional view of a combustion part of a warm air heater equipped with the control device.

FIG. 5 is a block diagram of a PMV calculation unit of the control device.

FIG. 6 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 13 Target PMV setting 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. If the PMV output from the combustion amount setting unit that controls the combustion unit and the convection fan according to the difference between the output and the target PMV value and the heating start PMV calculation unit is within a predetermined PMV value, the target PMV value A control device for a warm air heater including a target PMV setting unit that sets a high 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.