JP2705282B2 - Heating capacity control device for heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a heating capacity control device such as a hot air heater.

2. Description of the Related Art In general, a heating capacity temperature control device of this type changes its heating capacity from strong to weak depending on the difference between a set temperature and room temperature. Therefore, when the room temperature is low, the heating is started at the maximum (high) heating capacity at the start of heating, and after the room temperature reaches the set temperature, the heating by the maximum heating capacity is released, and the heating capacity determined by the difference between the room temperature and the set room temperature (strength)
To start heating.

Problems to be Solved by the Invention However, in the case of such a heating capacity control device, when the room is small, even if the room temperature reaches the set temperature, the user may feel physically cold. This is because at the start of heating, especially at the start of heating from a low temperature, the room is small, so even if the indoor air temperature reaches the set temperature quickly, the walls, floors, ceilings, etc. of the room with a large heat capacity are cold enough to warm up. This is because even when the room temperature has reached the set temperature, the sensible temperature actually perceived by humans becomes lower due to cooling radiation.

Also, when the room is large, when the room temperature reaches the set temperature, the user may feel physically hot. In particular, when the room temperature at the start of heating is relatively high, it may be noticeable. This is because at the start of heating, the room air temperature rises slowly because the room is large, that is, the temperature rises almost in the same way as a wall, floor, ceiling, etc. in a room with a large heat capacity, or if the wall,
Even if the temperature of the floor, ceiling, etc. is somewhat high, even if the temperature rise is slightly slower, by the time the room temperature reaches the set temperature, the walls and ceiling in the room become almost the same temperature as the room temperature, and the cooling Because they no longer receive radiation, they felt relatively hot.

The present invention has been made in view of such a point, and an object of the present invention is to provide a comfortable heating state quickly regardless of the size of a room or the temperature at the start of heating.

Means for Solving the Problems In order to achieve the above object, the present invention provides a control unit for setting either or both of a combustion amount and a hot air amount based on both outputs from a room temperature detection unit and a room temperature setting unit, A deviation calculating unit for calculating a room temperature change deviation from the room temperature at the start and the room temperature after a certain time after the start of heating, and a strong heating capacity instruction at the start of heating output from the control unit based on the room temperature and the room temperature change deviation output. And a capacity control unit that corrects the release output time of the air conditioner. As another means for achieving the object, either the combustion amount or the hot air flow based on the output difference from the room temperature detection unit and the room temperature setting unit is used. Alternatively, a control unit for setting both capacities, a deviation calculation unit for calculating a room temperature change deviation from a room temperature at the start of heating and a room temperature after a fixed time from the start of heating, a room temperature, a room temperature change deviation, and a combustion amount. Or a control rule storage unit that stores, as a control rule, a relationship with a heating capacity instruction to be output to one or both of the hot air amount variable means, and inference with reference to the room temperature and the room temperature change deviation and the control rule of the control regulation storage unit. A control inference unit that performs processing to determine the heating capacity instruction, and an output that corrects a release output time of the strong heating capacity instruction at the start of heating output from the control unit based on an output from the control inference unit And a correction unit.

Operation In the present invention, the time at which the maximum heating capacity at the start of heating is released is delayed, that is, the temperature is set higher, as the amount of change in room temperature is large and the heating load is small, that is, the room is small. Therefore, as the room becomes smaller, heating is performed at the maximum heating capacity until the temperature becomes higher than the set temperature. As a result, even if there is cold radiation from walls, floors, ceilings, etc., it will be possible for the user to quickly reach the set temperature in a short time. Heating, that is, comfortable heating becomes possible. In addition, when the room is large and the heating load is large, or when the room temperature at the start of heating is high, the point at which the maximum heating capacity at the start of heating is released is set earlier, that is, the temperature is set to a lower value. Therefore, as the room is larger and the room temperature at the start of heating is higher, the heating capacity becomes weaker from a temperature lower than the set temperature, and as a result, comfortable heating can be obtained without being overheated.

An embodiment of the present invention will be described below with reference to the drawings. First, an example of a hot air heater will be described with reference to FIG.
Is a heater main body, and 2 is a heat source portion provided in the heater main body 1, and uses a vaporizing burner that vaporizes fuel and mixes it with combustion air to burn. Reference numeral 3 denotes a fuel pump for supplying fuel to the heat source 2, reference numeral 4 denotes a burner fan for supplying combustion air to the heat source 2, and reference numeral 5 denotes hot air using heat of the combustion gas or the like generated in the heat source 2 as hot air. A convection fan 7 that blows out from the warm air outlet 6 is a louver provided in the warm air outlet 6 for changing the blowout angle of the warm air. The louver angle is changed by a louver angle varying means 8 such as a stepping motor. It has become. Reference numeral 9 denotes a control device for controlling the amount of combustion and the amount of hot air by driving the fuel pump 3, the burner fan 4, and the convection fan 5, and driving the louver angle varying means 8 in conjunction therewith to change the louver angle. It is.

FIG. 1 is a block diagram of the above-mentioned control device, in which inference control is performed as an example. In FIG. 1, 11 is a room temperature detecting section, 12 is a room temperature setting section, and 13 is the above room temperature detecting and setting section.
A control unit for inputting the output from 11, 12 and setting the amount of combustion and the amount of hot air in accordance with the output. The control unit includes a combustion amount variable means 14 including the fuel pump 3 and the burner fan 4, and a convection fan 5. The hot air volume changing means 15 is driven. 16 is a deviation calculating unit, room temperature changes deviations from temperatures T ₁ Metropolitan obtain a temperature T ₀ obtained in the heating start from room temperature detecting unit 11 after the heating start a predetermined time E _n
Is calculated. 17 is a control rule storage unit, which is the temperature at the start of heating
T ₀ and stores a control rule described using the control variable the relationship between heating capacity instruction to output correction unit, which will be described later by the change in room temperature deviation E _n. Here "If as an example of the control rules, if the room temperature is slightly cold and room temperature variation deviation E _n is large (condition part), heating capacity indication (strong heating capability indication of the release point) a little case an over (output unit) , Etc. in the if-them- format, as shown in Table 1 below.

Here, the control variables such as "slightly cold", "large" or "slightly exceed" are defined by the membership function shown in FIG.

The control rule storage unit 17 includes a condition unit storage unit 17a that stores a condition unit of the control rule, and an output unit storage unit 17b that stores an output unit of the control rule.

Then 18 controlled by the inference unit, and outputs the determined heating capacity indication amount by performing inference from the control rule of the heating starting at room temperature T ₀ and room temperature variation difference E _n and the control rule storage unit 17. Here, the control inference section 18 at room temperature detector unit 11 and the deviation calculation unit 16 and the room temperature T ₀ of the heating start from a condition part storage portion 17a, adapted to determine the fitness of the condition part of the control rules of change in room temperature deviations E _n Degree calculation unit 18a
And a weight calculation unit 18b that weights the output unit of the control rule with the determined degree of conformity and the output signal of the output unit storage unit 17b.
And a center-of-gravity calculating unit for obtaining a heating capacity instruction by a center-of-gravity calculation from the output unit of the weighted control rule from the weighting calculating unit 18b
18c. Reference numeral 19 denotes an output correction unit that corrects the release point of the strong heating capacity instruction from the control unit 13 based on the heating capacity instruction output from the control inference unit 18.The corrected output is a combustion amount variable unit 14 and a hot air amount variable unit. Send them to 15 to control them. Note the control rule storage unit 17 and the control inference section 18 and the output correction unit 19 constitutes a capacity control section 19A for outputting a heating capacity indication based on room temperature T ₀ and room temperature variation deviation E _n.

The operation of the above configuration will be described. First, when the start of operation is confirmed, the control unit 13 starts combustion according to a predetermined program. Next, when the combustion is started, the room temperature and the set temperature are detected, the combustion amount is calculated based on the output difference, and the calculated combustion amount is output to the combustion amount variable means 14 and the hot air amount variable means 15 to control the combustion and the hot air amount. At the start of normal heating, the difference between the room temperature and the set temperature is large, so that the start of heating is instructed with the maximum heating capacity (maximum combustion / hot air volume). At this time, since there is no output from the control inference unit 18, the output correction unit 19
The output from is output as it is, and heating starts at the maximum heating capacity. When shown in the flowchart of FIG. 2 P ₁ ~
It is the operation of the P _6.

Next, when a certain time (for example, 15 minutes) has elapsed after the start of heating, the deviation calculating unit 16 calculates the room temperature T ₀ at the start of heating and the room temperature after a certain time.
Request room temperature change deviation _{E n (E n = T 1} -T 0) from T ₁ Tokyo. Second
When shown in the flowchart of FIG become operation of P ₇ to P _9. The room temperature T ₀ at the start of heating determined here is t ₀ , and the temperature deviation is E. Then adaptability calculation unit 18a is the ambient temperature T ₀ = t ₀ and temperature deviation E _n = condition part of the control rules of e and the condition part storage portion 17a (Table 1 and Figure 3 of the membership functions A, B ) Is obtained to determine the degree of conformity w. For example, a vertical line is drawn at t ₀ on the horizontal axis (room temperature) in FIG. 3A, and the intersection with each function is the degree of conformity w to room temperature t ₀ . Here is a good fit to a very cold function wt
1, good fit to cold function wt2, good cold fit to wt
Becomes 3. In addition, the room temperature change deviation is similar to the above-mentioned room temperature, and has a degree of fit we1 to a slightly wider function, a degree of fit we2 to a normal function, and a degree of fit we3 to a slightly narrower function. The above results are shown in Table 2 by applying them to Table 1.

Actually, the fitness w is the smaller one (min method)
Is adopted. For example, assuming that the magnitude relationship between the fitness degree wt2 for cold and the fitness degree we2 for normal is wt2> we2, we2 is the fitness degree for the membership function "slightly over" in the output unit.
In the flowchart of FIG. Next, a weighting calculation is performed by the weighting calculation unit 18b with reference to the output unit (Tables 1 and 2 and the membership function C in FIG. 3) of the control rule in the output storage unit 17b. The result example is the third
Suppose that it becomes as shown in the table.

 In the flowchart of FIG. 2, it is P11.

Next, the center-of-gravity calculating unit 18c combines the functions of the output parts of the weighted control rules (MAX method), and obtains the center of gravity (center-of-gravity method). This results in heating capacity instruction to room temperature T ₀ and room temperature changes deviations E _n when the inputted heating starts, to the output correction section 19 heating capacity indication obtained. These are P12 and P13 in the flowchart of FIG. The results are shown in FIG.

The output correction section 19 outputs the heating capacity instruction from the control section 13 to the combustion amount variable section 14 and the hot air volume variable section 15 based on the heating capacity instruction, based on the heating capacity instruction, and controls them.

That is, for example, the room temperature at the start of heating is 7 shown in FIG.
At room temperature, the deviation of the change in room temperature after a certain time is shown in FIG.
deg., the heating capacity is instructed, in this case, the point at which the strong heating capacity at the start of heating is released is set to be 1.2 degrees higher than the set temperature by performing a series of operations. If the room temperature change deviation is the same, the room temperature becomes higher (overshoot) than the set temperature as the room temperature decreases (normal → slightly cold → cold → very cold) as is clear from the control rules in Table 1. The above-mentioned tendency is the same tendency (different in degree) regardless of the magnitude of the room temperature change deviation. In addition, if the room temperature is the same, the room temperature change deviation becomes larger (small → normal → slightly large → large) so that the release point of the strong heating capacity is set higher than the set temperature. This tendency is independent of the room temperature at the start of heating. Similar trends (different degrees). In this manner, the release point of the strong heating capacity with respect to the set temperature is continuously determined while maintaining the above control rules with respect to the change in the initial room temperature at the start of heating and the variation in the room temperature change deviation. Therefore, the strong heating capacity release point (temperature) instructed by the control unit 13
If the room is small even if it is the set temperature, or if the room temperature at the start of heating is low, it will be 1 deg, 2 deg ... higher than the set temperature. Conversely, if the room is large or the temperature at the start of heating is high, 1deg, 2deg ... lower than the set temperature. As a result, when the room is small and the room temperature at the start of heating is low, heating is performed with strong heating capacity until the temperature becomes higher than the set temperature, so even if there is cold heat radiation from the walls, floor, ceiling, etc., it feels cold physically. Will not be. When the room is large or the temperature at the start of heating is high, the strong heating capacity is released at a temperature lower than the set temperature, and the heating capacity changes as medium, weak, or weak. The temperature will not be too high and you will not feel hot.

Effect of the Invention As is clear from the description of the embodiment, according to the present invention, when the room is small, or when the room temperature at the start of heating is low, the heating is performed with the strong heating capacity until the room becomes slightly higher.
When the room is large, or when the room temperature at the start of heating is high, the heating by the strong heating capacity is canceled from the slightly lower temperature, and the heating is not moderately felt by the cold radiation from the ceiling, etc. , So that the user does not feel hot when the room temperature reaches the set temperature. That is, optimal heating can be performed by judging the size of the room and the state of the room temperature at the start of heating, and a comfortable heating state at the start of heating can be efficiently and quickly created without waste.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control device for a hot air heater in one embodiment of the present invention, FIG. 2 is a flowchart showing its operation, FIG. 3 is a diagram showing the membership function, FIG.
The figure shows the calculation result of the center-of-gravity calculation means of the control device, and FIG. 5 is a sectional view of the hot air heater. 11… Room temperature detection unit, 12… Room temperature setting unit, 13… Control unit,
14 ... means for varying the amount of combustion, 15 ... means for varying the amount of hot air, 16 ...
Deviation calculation unit, 17: control rule storage unit, 18: control inference unit, 19: output correction unit, 19A: capability control unit.

Continued on the front page (72) Inventor Shinji Kushida 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. ) Inventor Tadanori Haneda 1006 Kadoma, Kazuma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd.

Claims (2)

(57) [Claims] A control unit for setting either or both of a combustion amount and a hot air amount based on outputs from a room temperature detecting unit and a room temperature setting unit; A deviation calculation unit for calculating a room temperature change deviation from the room temperature, and a capacity control unit for correcting the release output time of the strong heating capacity instruction at the start of heating output from the control unit based on the room temperature and the room temperature change deviation output. A heating capacity control device for a heater. A control unit for setting either or both of a combustion amount and a hot air amount based on outputs from a room temperature detecting unit and a room temperature setting unit; A deviation calculation unit for calculating a room temperature change deviation from the room temperature, and a control rule storage unit for storing, as a control rule, a relationship between the room temperature and the room temperature change deviation and a heating capacity instruction to be output to one or both of the combustion amount and the hot air amount variable means. A control inference unit that performs inference processing with reference to room temperature and room temperature change deviation and the control rules of the control rule storage unit to determine the heating capacity instruction, and from the control unit based on an output from the control inference unit. A heating capacity control device for a heating machine, comprising: an output correction unit that corrects a release output time of a strong heating capacity instruction at the start of heating that is being output.