JPS63318414A - Controller for warm-air heater - Google Patents

Abstract

PURPOSE:To obtain a preferable warm-air temperature, by a method wherein the amount of combustion is changed automatically in synchronizing with the amount of ventilation usually, however, only the amount of ventilation of warm-air or the amount of combustion is increased or decreased manually by a predetermined amount if necessary when the amount of the combustion is smaller than a predetermined value. CONSTITUTION:A controller 10 is constituted of the room temperature detecting means 11 of a room temperature detector 7, an amount of combustion control means 12, changing the amount of combustion in accordance with the detected room temperature and a preset set temperature, a fan airflow rate control means 13, outputting an information on the rotating number of a fan 8, which is preset in corresponding to the amount of combustion one to one, a switch treating means 14, reading the operating state of switches arranged on a panel 9, a correction judging means 15, judging a correcting operation command by a manual switch switch only when the amount of combustion is smaller than a predetermined value as effective, a fan airflow rate correcting means 15', adding the amount of correction command by the switch treating means 14, and a fan driving means 13', inputting the information on the operating number of rotation of the fan 8 and regulating the fan 8 to a set number of rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustor control device that varies the amount of combustion and the amount of air blown by a blower depending on room temperature.

Conventional technology Warm air heaters, commonly referred to as automatic temperature control types, compare the room temperature detected by a built-in room temperature detector with the set temperature, and automatically switch the combustion amount to adjust the temperature according to the temperature difference. It looks like this. This type of heater uses a blower to blow heated static electricity into the room, and when the room temperature is low, it increases the combustion amount and at the same time increases the air flow to a strong air volume, sending warm air far away and keeping the room temperature low. When the temperature rises, the room temperature is controlled by lowering the amount of combustion and air flow. Specifically, this change in the amount of air blown is performed by changing the rotational speed of the blower, and conventionally, this change in the amount of air blown was simultaneously changed in conjunction with the above-mentioned change in the amount of combustion. Therefore, the user only has to set the set temperature, and the device automatically determines the amount of combustion and air flow, raises the room temperature to the set temperature, and maintains the room temperature at that temperature. ing.

FIG. 7 is a schematic diagram showing a conventional quenching configuration. 101 is a fuel tank, and fuel oil is sucked up by an electromagnetic pump 102 and fed under pressure to a carburetor 103. The carburetor 103 is powered by combustion and an electric heating element 104.
The fuel oil is vaporized here and passed from the nozzle 105 to the mixing pipe 106.
The primary air is sucked in by the ejector action of this ejection force, and is ejected from the flame port 107 where it is combusted. The combustion heat is sent to the air outlet A by the blower 108, and is sent into the room from here. In addition, the room temperature detector 109 is connected to the blower 1
It is attached near the inlet on day 0.

Figure 8 shows a conventional control @ circuit, where 110 is a power supply;
A control unit 111 performs combustion control by controlling the temperature of the electric heating element 104, detecting the room temperature by the room temperature detector 109, and controlling various timings. The control unit 111 first performs preheating by turning on the relay 112 at the start of operation, and when the preheating is completed, turns off the relay 112 and turns on the relay 113.
By turning on the blower 108. Electromagnetic bonder 102
The igniter 114 is then energized to ignite and burn.

The relay 115 is a 2-circuit, 2-contact relay that connects the room temperature detector 10.
When the room temperature detected at step 9 is lower than the set temperature, the A contact on the strong rotation side of the blower 108 and the L contact on the strong operation side of the electromagnetic pump 102 are closed, and combustion becomes strong combustion, and at the same time, the blower 108 becomes strong rotation. Conversely, if the room temperature is higher than the set temperature, relay 1
15 is closed to the b contact and b' contact sides, resulting in weak combustion and at the same time, the blower 108 becomes weakly rotated. The rotational speed of the strong rotation and weak rotation of this blower on the 10th day is set so that the rotational speed corresponds to the amount of combustion, taking into consideration the temperature rise inside the product and the temperature of the hot air at the outlet.

As mentioned above, conventional heaters try to keep the room temperature constant by automatically changing the amount of combustion and the amount of hot air blown according to the room temperature, but the amount of air blown is set at a predetermined rotation speed depending on the amount of combustion. The amount of air blown and the amount of combustion always operated with only one type of predetermined correlation. This is because the amount of air blown by the blower has a very close correlation with the amount of combustion, and if the amount of air blown decreases during strong twist firing, the internal temperature of one device will rise too much, reducing reliability, or the temperature of the hot air will be high. There is a risk of burns if the amount of heat is too high, so the amount of air blown is fixed according to the amount of combustion.

Problems to be Solved by the Invention However, in recent years, where personal taste has become more important, the above-mentioned conventional configuration can only provide a unique type of hot air and cannot provide hot air according to one's personal preference. In some cases, there was a problem in that a comfortable feeling of heating could not be obtained. In other words, human sensations vary greatly from person to person, and even with the same hot air temperature, some people feel hot or chilly, and some people still feel that the blower's wind is too strong.Requirements regarding hot air temperature and air volume are vastly different. It's all different. Nevertheless, the hot air temperature and air volume are already determined by the equipment manufacturer at the time of design.

Conventional hot air heaters do not allow users to change the temperature of the hot air according to their preference, making them inconvenient for some people to use.

The present invention solves this conventional problem. Normally, the combustion amount and the air blowing amount change automatically in synchronization, but when the combustion amount is less than a predetermined value, the hot air blowing amount or the combustion amount is changed as necessary. The purpose of this invention is to enable the desired warm air temperature to be obtained by manually increasing or decreasing the current hot air blowing volume or combustion volume by a specific amount.

Means for Solving the Problems In order to achieve the above object, the control device for the hot air heater of the present invention includes a manual switch for instructing correction of air flow rate or combustion amount, and whether or not to perform correction depending on the combustion amount. and a correction determination means for determining whether the hot air blowing amount or the combustion amount is changed according to the room temperature detected by the room temperature detector.
1i to perform increase/decrease correction based on the output from the correction determination means.
te, binding.

Effect of the present invention With the above-described configuration, the combustion amount and hot air blowing amount are automatically set according to the detected room temperature, but the set smoking amount or air blowing amount is determined from the combustion amount or blower landscape control means. Since it is corrected to the output song, either the combustion amount or the air blowing amount will remain the same, but only the other will change, making it possible to obtain warm air that is different from the warm air when the country is automatically opened. .

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a configuration diagram of an embodiment of the present invention, in which 1 is an outer frame of a hot air heater, 2 is a fuel tank, and 3 is a fuel supply tank whose discharge amount changes depending on the applied pulse frequency. electromagnetic pump,
4 is an electric heating element, and 5 is a vaporizer, which is heated to a vaporization temperature by the electric heating element 4.

6 is a combustor. Further, a room temperature detector 7 is installed near the inlet of the blower 8, and inputs an electrical symbol obtained by converting the room temperature to a control device 10 located inside the panel 9. The spring/I/9 is also provided with a group of various switches (not shown).The J side device 10 includes a room temperature detection means 11 that receives the output of the room temperature detector 7, and a room temperature detection means 11 that receives the output of the room temperature detector 7 and sets the detected room temperature and the The combustion amount control means 12 changes the combustion amount in the range of, for example, 3000 kcal to 1000 kcal by changing the pulse frequency output to the electromagnetic bonder 3 according to the set temperature set, and A blower air volume control means 13 outputs information on the set rotational speed of the blower 8, a switch processing means 14 reads the operation status of the switch disposed on the spring/L/9, and a switch processing means 14 judges the combustion amount. correction determination means 15 which validates the correction operation instructed by the manual switch only when the amount of combustion is less than a predetermined value; a blower air volume correction means 15' that adds a correction amount instructed by the switch processing means 14 to the set rotation speed;
It is comprised of a blower driving means 13' that receives operating rotational speed information of the blower 8 as input and adjusts the blower 8 to a set rotational speed by changing the energization time per half-wave waveform to be output. Further, the correction determination means 15 includes a correction amount setting section 15 that sets a correction amount upon receiving instructions from the switch processing means 14.
If the combustion amount output from the combustion amount control means 12 is larger than, for example, 2000 kcal, it is determined that there is no ζ correction, and if it is smaller than 2000 kcal, it is determined that there is 6 correction. −
b, and the judgment of this combustion amount judgment unit 15-b is corrected by 5).
In this case, the blower air volume control means 13 is controlled by the correction amount setting section 15-
If connected to a and 1 “no correction”, the blower drive means 13
and a switching section 15-C that acts to connect to the switching section 15-C. Switch 16.1? , 18 are switches for instructing the rotation correction amount of the blower 8. When the switch 16 is pressed, the operating rotation speed of the blower 8 is increased or decreased by, for example, -9° rpm, and when the switch 18 is pressed, the operating rotational speed is increased or decreased by +9 rpm. When switch 17 is pressed, the correction amount becomes zero.

FIG. 2 shows an example of a specific circuit of the main part. Control device 1
0 consists of a microcomputer 19 and peripheral circuits. The microcomputer 19 shown here is
It has CPU% ROM, RAM and input/output section. This is a so-called one-chip microcomputer.

Room temperature detector 7 is connected to an input section of microcomputer 19 via A/D converter 20. As a result, the temperature signal from the room temperature detector 7 is converted into a binary code and read into the microcomputer 19. 21 is an operation switch for instructing the start of combustion; switch 16.17.1
Similarly to 8, it is input to the microcomputer 19.

Reference numeral 22 denotes a zero-cross detection circuit that generates a pulse signal having a width of about 1 ms to detect the zero-cross point of the AC signal source 23 synchronized with the power supply frequency, and uses this pulse signal to instruct the microcomputer 19 about the zero-cross point. Reference numeral 26 denotes a semiconductor switch, which receives FIRffl from an LED as a light emitting part and a triac as a light receiving part. 2
7 is a relay for turning on and off the electric heating element 4, and 28 is an igniter. 25 is a driver, with semiconductor switch 2 at the output terminal.
6, a relay 27, an electromagnetic bonder 31, and an igniter 28 are connected, and the output signal from the microcomputer 19 is amplified to drive each load. A pulse signal is applied to the electromagnetic bonder 3, and the amount of fuel discharged, ie, the amount of combustion, changes depending on the frequency of the pulse signal.

On the other hand, the AC power source 24 is connected to the electric heating element 4 via the contact 27a of the relay 27, and the air blower PS8 via the semiconductor switch 26.
are connected in parallel, and the @grip blower 8 is phase-controlled. That is, as shown in FIG. 3, the microcomputer 19 detects the zero-crossing point every half wave using the pulse signal from the zero-crossing detection circuit 22, and detects the zero-crossing point for a certain period of time (
1) Later, when an on signal is output from the output section, the driver 25
A current flows through the light emitting part of the semiconductor switch 26, the triac of the light receiving part becomes conductive, and the current is supplied to the blower 8. If the time t for turning off the blower 8 in each half wave (hereinafter referred to as "phase off time") is long, the blower 80 rotation speed tends to decrease, and if it is short, it increases, and the correlation is shown in Figure 4. .

Next, the operation of the Kinio side configured as described above will be explained.

When the operation switch 21 is turned on, the relay 27 is first turned on to energize the electric body 4 and preheat it. When preheating is completed, the relay 27 is turned off and the first igniter 28 is turned on.
At the same time, the combustion amount control means 12 outputs a constant pulse signal from the output section to the electromagnetic pump 3 to perform ignition and combustion.

Hereinafter, the operation during combustion will be explained using the flowchart of FIG. 5. First, in step 29, the amount of combustion is calculated according to the difference between the room temperature detected by the room temperature detector 7 and the set temperature, that is, the pulse frequency output to the electromagnetic pump 3 is calculated. Step 30 calculates the blower 80 rotation speed corresponding to the combustion amount calculated in step 29. Step 31 outputs the pulse frequency determined in step 29 to the electromagnetic pump 3 from the output section. Step 32 is switch 16.17.1
80 input processing is performed, and the process branches at step 33 depending on the input status at step 32. That is, if the switch 16 is pressed, step 34 is processed, if the switch 18 is pressed, step 35 is processed, and if the switch 17 is pressed, the process immediately moves to step 36. Step 32
' is a determination unit that determines the combustion amount calculated in step 29, and if the combustion amount is 2000 kca1 or more, step 36 is performed.
If it is less than 2000 kcal, proceed to step 33.
The lights change to . Step 34 subtracts 9° rpm from the blower rotation speed determined in step 30, and step 35 adds 9° rpm to the blower rotation speed determined in step 30. Step 36 is to find the phase off time t according to the fan rotation speed from a correlation table between the phase off time t and the fan rotation speed that has been set in advance.
At step 7, the output is output from the output section to the blower 8.

According to the configuration of the above embodiment, only the amount of air blown can be increased or decreased without changing the amount of combustion, as shown in the relationship between the amount of combustion on the horizontal axis and the fan rotation speed on the vertical axis in FIG.

For example, if there are infants with weak skins nearby or if you want to keep the hot air temperature low in early spring, switch 18.
If you press , the amount of air blown increases while the amount of combustion remains the same, allowing you to lower the temperature of the hot air.

On the other hand, if you want to spot-heat just one foot, or if you want to rapidly heat up a cold body outdoors, switch to switch 1.
This can be resolved by pressing 6.

In the above embodiment, the blower air volume is increased or decreased, but the same goes for increasing or decreasing the combustion amount, and the increase or decrease can be done by increasing the number of switches instead of increasing or decreasing the amount one step at a time. is possible. Furthermore, if a variable resistor is used instead of a switch, the set value can be changed in an analog manner, allowing stepless setting.

As described above, according to the antibacterial device for a hot air heater of the present invention,
In addition to automatically controlling the combustion amount and air blowing amount according to the room temperature, you can also manually change either the combustion amount or the air blowing amount, so you can adjust the hot air temperature according to your preference without compromising the stability of the room temperature. is obtained. In addition, in this invention, when the combustion amount is large, the automatically set combustion amount or air blowing amount has priority over the manually set correction.

For example, even if a switch is pressed during strong twist firing, the temperature of the hot air will not rise to an extremely high level, making it safe.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a control device for a warm air heater according to an embodiment of the present invention, FIG. 2 is a specific circuit diagram of the same essential parts, and FIG. 3 is a phase determination waveform diagram of the blower 8. Figure 4 is also a correlation diagram between the phase off time and the rotation speed of the blower 8, and Figure 5
Figure 6 is a flowchart explaining the operation during combustion, Figure 6 is a graph showing the relationship between combustion amount and fan rotation speed, and Figure 7 is a schematic configuration diagram showing a conventional hot air heater control device. , FIG. 8 is an ipsilateral subcircuit diagram. 6... Combustor, 8... Blower, 11...
... Room temperature detection means, 12 ... Combustion amount control means, 13 ... Air flow control means, 15 ...
... Correction determination means, 15' ... Blower air volume correction means, 151 ... Combustion amount determination section, 16, 17.1
8...Switch. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 6 - Seishinji Figure 2 Figure 3 Phase off dime Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A combustor, a blower that sends air heated by the combustor into the room, a room temperature detection means for detecting the temperature in the heated room, and a difference between the room temperature detected by the room temperature detection means and a preset temperature. A combustion amount control means for automatically changing the combustion amount using the temperature difference as an input signal, a blower air volume control means for automatically changing the air blowing amount, a manual switch for instructing a correction amount of the blower air volume or the combustion amount, and a combustion amount. correction determining means for determining the combustion amount and validating the correction operation instructed by the manual switch only when the combustion amount is less than a predetermined value; and correction for increasing or decreasing the air blowing amount or the combustion amount based on the output from the correction determining means. A control device for a hot air heater, comprising means.