JPH0439570A - Controller for hot air heater - Google Patents

Abstract

PURPOSE:To expand comfortable space in a room by a method wherein the angle of a louber is set based on an output from a control unit and the upper limit angle of the angle of the louber is set based on the output of room temperature detection while the angle of the louber is set within the set range of angle. CONSTITUTION:A control unit 13 starts combustion in accordance with a predetermined program. When the combustion is confirmed, a set room temperature is detected to operate the amount of combustion by the difference of outputs and outputs it to an amount of combustion changing means 14 and an amount of hot air changing means 15 while a louber angle setting unit 16 operates and sets the angle of a louber. Then a room temperature is detected to operate and set the upper limit of the angle of louber based on a room temperature output in accordance with a stored regulation previously through a louber angle upper limit setting unit 17. Thereafter, a louber angle output is outputted to a louber angle changing means 8 in accordance with a predetermined regulation to set the louber at a predetermined angle. According to this method, comfortable space in a room can be expanded and comfortable heating can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for a hot air heater that changes the blowing angle of hot air up or down depending on the hot air or the amount of heat generated.

2. Description of the Related Art A conventional control device for this kind of hot air heater was disclosed by the applicant in Japanese Patent Application No. 118537/1983, and it is designed to control hot air or heat generation based on the difference between the room temperature and the set temperature. In conjunction with changing the amount, the louver angle of the hot air outlet is changed up and down.

Problems to be Solved by the Invention According to the control device for this hot air heater, when the hot air or calorific value is strong, the hot air blowing direction is made almost horizontal, and as it becomes weaker, the hot air blowing direction is gradually directed downward. This suppresses drafts of hot air, improving indoor temperature distribution and creating a more comfortable space.

However, although the control device for this hot air heater takes into account the difference between the room temperature and the set temperature, it sets the louver angle without considering the room temperature itself during heating. However, in general, the draft of hot air is large when the room temperature itself is low (because there is a large difference between the room temperature and the hot air temperature).
, the higher the room temperature, the weaker it becomes. However, the control device for the warm air heater described above does not take this point into account; in other words, the louver angle is set only based on the difference between the room temperature and the set temperature, no matter what the temperature is during heating.
For example, in the case of strong combustion and strong hot air volume, the comfortable space can be expanded by setting the downward louver angle more downward. However, the louver angle could only be the same, and there was a limit to how comfortable the space could be.

The present invention was made in view of these points, and an object of the present invention is to make the comfortable space wider.

Means for Solving the Problems In order to achieve the above object, the present invention uses a louver that changes the hot air blowing angle, and a method that adjusts either the combustion amount or the hot air amount based on the Okayama force difference from the room temperature detection section and the room temperature setting section. Alternatively, the louver angle control section may include a control section that sets both, and a louver angle control section that sets the louver angle based on the output from the control section and the output from the room temperature detection section. a louver angle setting section that sets the louver angle based on the output from the room temperature detection section; a louver angle upper limit setting section that sets the upper limit angle of the louver angle based on the output from the room temperature detection section; and a louver angle output section that outputs a louver angle output from the louver angle setting section within the specified angle.

Operation In the present invention, the louver angle is determined by the difference in output from the room temperature detection section and the room temperature setting section with the above configuration.
At that time, the louver angle is corrected based on the room temperature itself detected by the room temperature detection unit, and for example, even if the combustion and strong wind are the same, when the room temperature is 5℃, the angle will be more downward than when it is 15℃. . In other words, the lower the room temperature and the stronger the hot air draft, the lower the hot air blowing angle can be.
This will further expand the comfortable space inside the room.

Example Embodiments of the present invention will be described below with reference to the drawings.

First, an example of a hot air heater will be explained using Fig. 3. 1 is the heater body, 2 is a heat source provided in the heater body 1, which vaporizes fuel and mixes it with combustion air. An evaporative burner is used to combust. 3 is a fuel pump that supplies fuel to the heat source section 2; 4 is a burner fan that supplies combustion air to the heat source section 2; 5 is a fuel pump that supplies combustion air to the heat source section 2; A convection fan 7 blows out hot air from the hot air outlet 6, and 7 is a louver provided at the hot air outlet 6 to change the hot air blowing angle, and the louver angle is changed by a rule angle variable means 8 such as a stepping motor. It looks like this. Reference numeral 9 denotes a control device that drives the fuel pump 3, burner fan 4, and convection fan 5 to control the combustion amount and hot air amount, and in conjunction with this, drives the louver angle variable means 8 to change the louver angle. It is.

FIG. 1 is a block diagram of the above control device, where 11 is a room temperature detection section, 12 is a room temperature setting section, and 13 is an input of the outputs from the room temperature detection and setting sections 11 and 12, and the combustion amount and temperature are determined by the output difference. A control unit that sets the air volume and outputs a louver angle setting signal S drives the combustion volume variable means 14 comprised of the fuel pump 3 and burner fan 4 and the hot air volume variable means 15 comprised of the convection fan 5. do. 16 is a louver angle setting unit that sets the louver angle based on the output from the control unit 13; 17 is a louver angle upper limit setting unit that sets the upper limit angle of inclination of the louver angle based on the temperature output from the room temperature detection unit 11; On the 1st, the louver angle output unit receives the outputs from the louver angle upper limit setting unit 17 and the louver angle setting unit 16 and drives the louver angle variable means 8, and the louver angle output unit drives the louver angle variable means 8 within the upper limit angle set by the louver angle upper limit setting unit 17. A louver angle output is output from the louver angle setting section 16. The louver angle setting section 16, the louver angle upper limit setting section 17, and the louver angle output section 18
The louver angle control section 19 is configured as follows.

Next, the operation of the above configuration will be explained using the flowchart of FIG. First, when the start of operation is confirmed in step 20, the control unit 13 starts combustion according to a predetermined program.Next, in step 21
When combustion is confirmed, the room temperature and set temperature are detected, and the combustion amount is calculated based on the output difference and outputted to the combustion amount variable means 14 and the hot air amount variable means 15, and the louver angle setting section 16 adjusts the louver angle in step 22. Calculate and set the angle. Then, in step 23, the room temperature is detected, and based on the room temperature output, the louver angle upper limit setting section 17 calculates and sets the louver angle upper limit in accordance with the rules stored in advance in step 24.

After that, in step 25, the louver angle output is output to the louver angle variable means 8 according to a predetermined rule,
This is driven to set the louver 7 at a predetermined angle. That is, for example, even if the louver angle calculated in step 22 is 13 degrees (downward angle of 13 degrees with respect to the horizontal line) due to strong combustion and strong hot air, in step 24 the room temperature is low and the hot air draft is relatively low. If the angle becomes strong, set the angle to 15 degrees, 17 degrees, 19 degrees, etc. depending on the room temperature, and in step 25 output the louver angle with the louver angle set in step 24 as the upper limit. do. Therefore, when the room temperature during heating is low and the hot air draft is relatively strong, the hot air will be blown downwards compared to when the hot air draft is weak, and the hot air will reach farther. A comfortable space expands.

Next, as the heating progresses and the difference between the room temperature and the set temperature decreases, the amount of combustion and the amount of warm air will decrease accordingly, and the roof will tilt more downwards to perform heating. The heating is performed in an optimal state according to the heating capacity.

In the above embodiment, the louver angle control 19 is composed of a louver angle setting section 16, a louver angle upper limit setting section 17, and a louver angle output section 18, and the louver angle is output according to a predetermined rule. However, this part may be configured to output the louver angle using fuzzy inference, and its configuration may be of any type as long as it achieves the object of the present invention.

Effects of the Invention As is clear from the description of the embodiments, according to the present invention, the louver angle is set taking into consideration not only the difference between the room temperature and the set temperature, but also the room temperature itself. When it becomes relatively strong, warm air can be blown downward, further expanding the comfortable space and providing comfortable heating.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a control device for a hot air heater in an embodiment of the present invention, FIG. 2 is a flowchart showing its operation, and FIG. 3 is a sectional view of the hot air heater. 7... Louver, 8... Louver angle variable means, 11... Room temperature detection unit, 12...
Room temperature setting section, 13... Control section, 14...
- Combustion amount variable means, 15... Warm air amount variable means,
16... Louver angle setting section, 17... Louver angle upper limit setting section, 18... Louver angle output section,
19... Louver angle control section. Name of agent: Patent attorney Shigetaka Awano Figure 1 ■ Procedural amendment (li9f;) September 77, 1990

Claims (2)

[Claims] (1) A louver that changes the hot air blowing angle, a control unit that sets either the combustion amount or the hot air volume, or both, based on the difference in output from the room temperature detection unit and the room temperature setting unit, and A control device for a warm air heater, comprising a louver angle control section that determines a louver angle based on an output and an output from the room temperature detection section. (2) The louver angle control section includes a louver angle setting section that sets the louver angle based on the output from the control section, and a louver angle upper limit setting section that sets the upper limit angle of the louver angle based on the output from the room temperature detection section. and a louver angle output section that outputs a louver angle output from the louver angle setting section within the angle set by the louver angle upper limit setting section.