JP2000171048A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize comfortable heating by performing combustion at a combustion quantity corresponding to a specified number of proportional stages and turning a convection fan at an r.p.m. corresponding to the number of proportional stages thereby raising the temperature quickly. SOLUTION: A room temperature proportional control pattern is set to increase the combustion quantity and r.p.m. with reference to the room temperature and an underfloor temperature proportional control pattern is set to increase the combustion quantity and r.p.m. with reference to the underfloor temperature. The number of proportional stages of room temperature proportional control pattern determined from the difference between a set room temperature and a temperature detected by a room temperature detector 17 is compared by a microcomputer with the number of proportional stages of underfloor temperature proportional control pattern determined from the difference between a set underfloor temperature and a temperature detected by an underfloor temperature detector 18 and the lower number of proportional stages is selected. A combustor 2 is combusted at a combustion quantity corresponding to the selected number of proportional stages and a convection fan is turned at an r.p.m. corresponding to the selected number of proportional stages.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating system for a high heat-insulated and airtight house, which is provided with basic heat insulation.

[0002]

2. Description of the Related Art A hot air heater or a hot water radiator is installed under the floor to control the temperature of the entire house based on the temperature of the underfloor space, and the amount of heat released from the hot air heater or the hot water radiator is controlled. The controls are known. Also, to control the temperature of the hot air supplied to each room from the hot air heater installed under the floor, a damper is provided at the hot air inlet to the room, and the amount of hot air flowing into the room is controlled by the damper. There is known a device that detects the temperature of a room and adjusts the amount of heat released from a hot air heater or a hot water radiator installed under the floor based on the detected temperature.

[0003]

However, when the temperature of the hot air heater or the hot water radiator is controlled based on the temperature under the floor, the room and the temperature under the floor do not always coincide with each other. Is narrower than the room (the space under the floor is 50 cm long)
(Smaller than room space) Heat capacity is small and easy to warm up. For this reason, the underfloor space reaches the set temperature even though the room temperature is low, and temperature control based on the underfloor space is performed, which causes a problem that it takes time for the room to reach an appropriate temperature. Therefore, if the underfloor temperature is set to a high value, the above-mentioned problems will be solved, but not only will the room temperature rise excessively when heating is stable, but it will also waste energy, and it will be a fundamental problem in highly insulated and airtight houses. Contrary to the idea of keeping the temperature difference of each space within 2 ° C. to 3 ° C. (if there is a temperature difference, dew condensation occurs at a low temperature), it also affects the life of the building. There is such a problem. An object of the present invention is to provide a heating device free from such a problem.

[0004]

According to the first aspect of the present invention, a heater provided with a combustor and a convection blower for blowing air toward the combustor is provided in the underfloor space, and the temperature from the heater is reduced. A heating device that heats a room with wind, and a room temperature detector that detects room temperature in a heating device that controls the amount of combustion in a combustor and the number of revolutions of a convection blower to control the temperature,
An underfloor temperature detector for detecting the underfloor temperature, and a microcomputer for registering the temperatures detected by the two temperature detectors, and the microcomputer is provided with a combustion amount in the combustor and a rotation of the convection blower based on the room temperature. The room temperature proportional control pattern is set so that the number increases with each increase in the number of proportional stages, and the combustion amount in the combustor and the rotation speed of the convection blower increase with each increase in the number of proportional stages, based on the underfloor temperature. The underfloor temperature proportional control pattern set as above is registered, and the number of proportional stages of the room temperature proportional control pattern obtained from the difference between the room temperature set temperature and the temperature detected by the room temperature detector is set higher than the room temperature set temperature. The microcomputer compares the proportional number of stages in the underfloor temperature proportional control pattern obtained from the difference between the underfloor set temperature and the temperature detected by the underfloor temperature detector with a microcomputer, and selects the smaller proportional stage number from both proportional stages. , By burning at the combustion amount corresponding to the selected proportional stage number and rotating the convection blower at the rotational speed corresponding to the selected proportional stage number, when the temperature at the start of heating is low, the underfloor space having a small heat capacity is used. Since the temperature rises first and the proportional step number of the underfloor proportional control pattern becomes smaller first, the proportional step number of the underfloor proportional control pattern is selected, and the temperature control based on the underfloor set temperature having a higher set temperature is performed, and the temperature is quickly reduced. Can be raised. Then, the room temperature gradually rises while heating is continued. Since the room temperature set temperature is set lower than the underfloor set temperature, the number of proportional steps in the room temperature proportional control pattern becomes smaller than the number of proportional steps in the underfloor proportional control pattern, and thereafter control based on the room temperature proportional control pattern is performed.

According to a second aspect of the present invention, in the first aspect, a hot air temperature detector is provided in the hot air passage, and the set temperature and the maximum temperature higher than the set temperature are registered in the microcomputer. And, in the underfloor temperature proportional control pattern and the room temperature proportional control pattern, when the hot air temperature exceeds the maximum value temperature, stop the combustion in the combustor, and provide a region for rotating the convection blower at the maximum rotation speed, When the hot air temperature detected by the hot air temperature detector exceeds the set temperature, the combustion is performed at a combustion amount corresponding to the proportional stage number smaller than the selected proportional stage number, and the hot air temperature exceeds the maximum value temperature. When the combustion in the combustor is stopped, the convection blower is rotated at the maximum rotation speed according to the number of proportional stages of the selected proportional control pattern, so that the temperature of the hot air does not rise abnormally.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. In FIG. 1, 1 is a space below the floor of the building A, 2a is a room on the first floor, 2b is a room on the second floor, 2c is a space above the ceiling provided below the floor of the room 2b on the second floor, 2d is an attic space, and 3 is a space 1 below the floor. The underfloor space 1 and the first-floor room 2a communicate with each other through an opening 4 provided on the floor of the room 2a. The room 2b provided on the second floor is a room 2b on the second floor in which the space 2c above the ceiling is communicated with the underfloor space 1 via the passage 5 provided in the wall.
The opening 4 provided on the floor surface of the above is communicated with the space 2c above the ceiling so that the warm air from the heater 3 is supplied to each room 2a, 2b, and the warm air supplied to each room 2a, 2b is supplied to the corridor. By returning to the underfloor space 1 through the space 2e such as a stair, warm air is circulated between the rooms 2a and 2b and the underfloor space 1. The underfloor space 1 is provided with an outside air inlet 6 to take in outside air, and the attic space 2d is provided with an exhaust pipe 7 to exhaust a part of the room air for ventilation.

As shown in FIGS. 2 to 5, the heater 3 is provided with a combustor 10 in a casing 8 having an open front surface with a space between both sides and an upper surface thereof. A convection air blower 11 that blows air toward the combustor 10 faces the back surface, the space is a hot air passage 9, and a front opening 8 a of the housing 8 is detachable with a space in front of the combustor 10. And a connection port 12a provided in the cover 12.
Is connected to a duct 13 for guiding hot air, and the hot air sent through the hot air passage 9 is guided to a predetermined position.

More specifically, the inside of the housing 8 is divided into right and left by a partition plate 8b, a combustor 10 is installed in one side space, and a combustion blower 16 and a combustor 10 are installed in the other side space.
And a control board 15 for the heater 3 and the like. The housing 8 and the cover 12 were doubled inside and outside to form a heat insulating space therebetween. Note that the combustor 10 is a pot burner 10 having a large number of air holes on the peripheral surface as a heat source.
a, an air chamber 10b surrounding the pot burner 10a, a combustion chamber 10c provided above the pot 10a,
0c communicating with the heat radiating portion 10d.
Is provided over the side surface of the combustor 10 and the back surface of the combustor 10 so as to face the convection blower 11. The heat radiating portion 10d located on the side surface of the combustor 10 has a flat plate shape. The located heat radiating portions 10d were arranged in a plurality of stages with a ventilation interval and constituted by pipes. 16 is the air chamber 10
4 shows a combustion blower for supplying combustion air to the pot 10a via a line b. Reference numeral 8c denotes a locking member for locking the cover 12.

1 and 6, reference numeral 17 denotes a room temperature detector for detecting a room temperature, 18 denotes an underfloor temperature detector for detecting an underfloor temperature, and 19 denotes a hot air temperature detection for detecting a hot air temperature flowing through the hot air passage 9. As shown in FIG. 5, the hot air temperature detector 19 is attached to the hot air passage 9 by attaching a mounting base 21 to the partition plate 8b, and attaching the hot air temperature detector 1 to the mounting base 21.
9 was attached, a cover 22 was provided to cover them, and an opening 22a was provided in the cover 22.

The control of combustion by the present apparatus is performed by a control circuit having a microcomputer 23 shown in FIG.
The input side of the microcomputer 23 is connected to the room temperature detector 17, the under-floor temperature detector 18, and the hot air temperature detector 19, and the output side is a photodetector ssr1 interposed in the operation circuit 24 of the convection blower 11. A solid state relay SSR1 (variable output) and a solid state relay SSR2 (variable output) for transmitting an optical signal to the photodetector ssr2 interposed in the operation circuit 27 of the combustion fan 16 Can be adjusted) and the ignition heater 2 provided in the pot 3
RY in which the contact ry1 is interposed in the operation circuit 26 of No. 5
1 and the operation circuit 2 of the electromagnetic pump 28
9, a light emitting element PH1 for sending an optical pulse signal to the photoreceptor ph1 interposed in the fuel cell 9, and the amount of fuel corresponding to the pulse signal from the light emitting element PH1 is discharged from the electromagnetic pump 28, so that combustion in the combustor 1 is performed. Adjust the volume. The operation circuit 29 is connected to a power supply via an operation switch 30. The operation circuit 29 includes a light emitting element PH2 which operates when the operation switch 30 is closed. The light receiving element ph2 of the light emitting element PH2 is connected to a microcomputer. 23, the microcomputer 23 is made to input this when the operation switch 30 is closed. In FIG. 6, 31 is a pot temperature detector, 32
Denotes a remote control operation board for operating the microcomputer 23.

The operation of the control circuit will be described. When the operation switch 30 is turned on, the microcomputer 23 operates at the same time. According to the program registered in the microcomputer 23, the combustion blower 16 is first driven to scavenge the inside of the pot 3. At the same time, the pot 3 is preheated by energizing the operation circuit 26 of the ignition heater 25. Thereafter, the electromagnetic pump 28 operates to supply fuel to the pot 3. The fuel supplied to the pot 3 is ignited and burned by the ignition heater 25. Thereafter, the temperature is adjusted by the above-described means.

To extinguish the fire, open the operation switch 30.
The power supply to the operation circuit 29 of the electromagnetic pump 28 is cut off to make the electromagnetic pump 28 inoperative. As a result, the supply of fuel to the pot 3 is cut off. However, the combustion blower 16 continues to operate thereafter, and the pot 3 is cooled by the blower from the combustion blower 16 so that the temperature of the pot 3 becomes lower than a certain temperature. Is detected by the pot temperature detector 31, the microcomputer 2
With the signal from 3, the combustion blower 16 is stopped to complete the operation. The ignition heater 25 is de-energized by a timer built in the microcomputer 23 after ignition and combustion.

The temperature control by this device is performed by the microcomputer 23.
A room temperature proportional control pattern in which the amount of combustion in the combustor 1 and the number of rotations of the convection blower 11 are set such that the amount of combustion and the number of rotations increase with each increase in the number of proportional stages based on the room temperature T1; Based on the temperature T2, the underfloor temperature proportional control pattern in which the combustion amount in the combustor 1 and the rotation speed of the convection blower 11 are set so that the combustion amount and the rotation speed increase as the proportional stage number increases, and the room temperature is registered. The number of proportional stages of the room temperature proportional control pattern obtained from the difference between the set temperature and the temperature detected by the room temperature detector 17, the set underfloor temperature and the underfloor temperature detector 1
8 compares the number of proportional stages of the underfloor temperature proportional control pattern obtained from the difference with the detected temperature with the microcomputer, selects the smaller proportional stage number from both proportional stages, and burns in the combustor 1. Is burned at a combustion amount corresponding to the selected proportional stage number, and the convection blower 11 is rotated at a rotational speed corresponding to the selected proportional stage number, or in addition to this,
A hot air temperature detector 19 is provided in the hot air passage 9 and a set temperature and a maximum temperature higher than the set temperature are registered in the microcomputer 23. The hot air temperature detected by the hot air temperature detector 19 indicates the set temperature. If the temperature exceeds the maximum value, the combustion in the combustor 1 is stopped when the hot air temperature T3 exceeds the maximum value. Numeral 11 rotates at the maximum rotational speed according to the number of proportional stages of the selected proportional control pattern.

The room temperature proportional control pattern is divided into a set temperature (a desired temperature can be set in increments of 1 ° C. in a range of 5 ° C. to 32 ° C.) and a range lower than the set temperature by 5 ° C. in 15 stages. Then, the combustion amount is sequentially switched from the maximum combustion to the minimum combustion, and the rotation of the convection blower 11 is set so as to be switched from the maximum rotation to the minimum rotation. , The rotation of the convection blower 11 is the minimum rotation, and the room temperature is 2 ° C. higher than the set temperature.
If it is higher than this, the fire is extinguished in the combustor and the convection blower 11 is set to rotate at the maximum speed. When the temperature is lower than the set temperature by 5 ° C. or more, the amount of combustion is maximized, and the convection air blower 11 is set to rotate at the rotation speed immediately before the fire is extinguished. In the underfloor temperature proportional control pattern, a temperature range of 8 ° C. lower than the set temperature (for example, 38 ° C.) and a temperature range of 3 ° C. lower than the set temperature are divided into 15 stages, and the combustion amount is sequentially switched from the maximum combustion to the minimum combustion. The rotation of the convection fan 11 is set to be switched from the maximum rotation to the minimum rotation. At a set temperature and a range lower than 3 ° C., the combustion amount becomes minimum and the rotation of the convection blower 11 becomes the minimum rotation, and is equal to or higher than the set temperature. If it is high, the fire is extinguished in the combustor and the convection blower 11 is set to rotate at the rotation speed immediately before the fire is extinguished. When the underfloor temperature is lower than the set temperature by 8 ° C. or more, the combustion amount is maximized, and the rotation of the convection blower 11 is set to be the maximum rotation.

Next, the temperature control of the present apparatus will be described with reference to the flowchart shown in FIG. First, the microcomputer is started, and from the temperature detected by the underfloor temperature detector 18, the number of proportional stages of the floor temperature proportional control pattern and the room temperature detector 1
7. The number of proportional steps of the room temperature proportional control pattern is obtained from the temperature detected in step 7. Then, the microcomputer 23 judges whether the number of proportional steps of the room temperature proportional control pattern is small by comparing the obtained numbers of steps and the microcomputer 23. If the number of proportional stages in the pattern is small, temperature control based on room temperature is performed. Then, during the continuation of the combustion, it is determined whether or not the hot air temperature detected by the hot air temperature detector 19 is lower than a set value (for example, 70 ° C.). If it is lower than 70 ° C., it is determined whether or not a temperature adjustment stop condition has occurred, that is, whether or not the temperature detected by the room temperature detector 17 is higher by 2 ° C. than a set temperature based on the room temperature. If (the room temperature is higher than the set temperature by 2 ° C.) occurs, the electromagnetic pump 27 is stopped to stop the combustion by the combustor 10. Thereafter, it is determined whether or not a re-ignition condition (the room temperature is lower by 1 ° C. than the set temperature) has occurred. If the re-ignition condition has occurred, re-ignition is performed, and the temperature obtained by performing the above-described steps (steps based on the room temperature) is obtained. Perform the key. If the temperature adjustment stop condition has not been generated, the temperature adjustment based on the room temperature proportional control pattern that has been performed in the above steps is performed.

It should be noted that the above-mentioned hot air temperature is equal to the set temperature (70
° C), it is determined whether the temperature is lower than the set temperature (70 ° C).
° C) or more, the combustion amount is set to a state in which the number of proportional stages in the proportional control pattern based on room temperature is reduced by two, and the convection blower 11 is rotated at the maximum rotational speed by the two proportional control patterns. To lower the hot air temperature. Thereafter, it is further determined whether or not the hot air temperature is lower than the intermediate temperature (75 ° C.) higher than the set temperature (70 ° C.). )
Returning to the process of judging whether or not the temperature is less than the above, the temperature is controlled by the room temperature proportional control pattern by performing the above-described steps. If the temperature is equal to or higher than the intermediate temperature (75 ° C.), the combustion amount is set to a state in which the number of stages of the room temperature proportional control pattern is reduced by four, and the convection blower 11 is rotated at the maximum rotation speed by the room temperature proportional control pattern.

Further, it is determined whether or not the warm air temperature is lower than the maximum temperature (85 ° C.) which is much higher than the set temperature (70 ° C.).
(° C.), the temperature is adjusted, and if it is equal to or higher than the maximum temperature (85 ° C.), the electromagnetic pump 27 is stopped to stop combustion. Then, it is determined whether or not the re-ignition condition (the hot air temperature set temperature or less) has occurred,
If it is determined that the re-ignition condition has occurred, it is further determined whether or not the re-ignition condition has occurred twice within one hour. Error display. If it is determined whether the number of proportional steps of the room temperature proportional control pattern is smaller than the number of proportional steps of the floor temperature proportional control pattern, and if it is determined that the number of proportional steps of the room temperature proportional control pattern is large, the underfloor shown on the right side of FIG. Temperature control is performed based on the temperature proportional control pattern. Then, similarly to the temperature control by the room temperature proportional control pattern, during the continuation of the combustion, the hot air temperature detected by the hot air temperature detector 19 becomes the set temperature (for example, 7.
0 ° C.). Set temperature (70
° C), it is determined whether or not a further temperature control stop condition has occurred, that is, whether or not the underfloor temperature is equal to or higher than a set temperature (for example, 38 ° C). Above), the electromagnetic pump 27 is stopped and the combustor 1
The combustion by 0 is stopped. Thereafter, it is determined whether or not a re-ignition condition (the under-floor room temperature is lower than the set temperature by 1 ° C.) has occurred. If the re-ignition condition has occurred, re-ignition is performed and the temperature is adjusted according to the above-described steps. If the temperature control stop condition does not occur, the temperature control is performed according to the above steps.

When it is determined whether the hot air temperature is lower than the set temperature (70 ° C.), if the temperature is higher than the set temperature (70 ° C.), the number of proportional steps in the underfloor proportional control pattern is reduced by two. State and the convection blower 11
Performs control in the direction of lowering the temperature of the hot air by rotating at the maximum number of rotations of the number of proportional stages of the both proportional control patterns. Thereafter, it is further determined whether or not the hot air temperature is lower than the intermediate temperature (75 ° C.) higher than the set temperature (70 ° C.). )
Returning to the process of determining whether the temperature is less than or equal to, the temperature is adjusted according to the steps described above. If the temperature is equal to or higher than the intermediate temperature (75 ° C.), the combustion amount is set to a state in which the number of proportional stages in the underfloor temperature proportional control pattern is reduced by four, and the convection fan 11 is rotated at the maximum rotational speed by the underfloor temperature proportional control pattern. Let it. Thereafter, a stop condition based on the hot air temperature is further generated, that is, it is determined whether or not the hot air temperature is lower than the maximum temperature (85 ° C.) which is much higher than the set temperature (70 ° C.). If so, the process returns to the process of determining whether the temperature is lower than the intermediate temperature (75 ° C.), and the temperature is adjusted. If the temperature is higher than the maximum value (85 ° C.), the electromagnetic pump 27 is stopped to stop combustion. Let it. Thereafter, it is determined whether or not a reignition condition (the hot air temperature set temperature or less) has occurred. Then, if it is one time, the re-ignition operation is performed, and if it is the second time or more, an error display is performed.

[0019]

According to the first aspect of the present invention, the number of proportional stages of the room temperature proportional control pattern obtained from the difference between the room temperature set temperature and the temperature detected by the room temperature detector, the underfloor set temperature and the underfloor temperature detector The microcomputer compares the number of proportional stages of the underfloor temperature proportional control pattern obtained from the difference with the detected temperature with the microcomputer, selects the smaller proportional stage number from both proportional stages, and corresponds to the selected proportional stage number. By burning with the combustion amount and rotating the convection blower at the rotation speed corresponding to the selected proportional stage number, when the temperature at the start of heating is low, the temperature of the underfloor space with a small heat capacity rises first, and the underfloor Because the number of proportional stages in the proportional control pattern decreases first,
The number of proportional stages in the underfloor proportional control pattern is selected, temperature control is performed based on the underfloor set temperature with a high set temperature, the temperature can be raised quickly, and when the room temperature gradually rises while heating is in progress, the room temperature Since the set temperature is set lower than the underfloor set temperature, the number of proportional stages of the room temperature proportional control pattern becomes smaller than the number of proportional stages of the underfloor proportional control pattern, and the amount of combustion in the combustor and the rotation speed of the convection blower are:
Control is performed on the basis of the room temperature proportional control pattern, and comfortable heating can be performed for what is in the room.

According to the second aspect of the present invention, when the hot air temperature detected by the hot air temperature detector exceeds a set temperature, the combustion amount corresponding to the proportional stage number smaller than the selected proportional stage number is reduced. By supplying the air to the combustor, the amount of combustion can be reduced when the temperature of the hot air rises, and when the temperature of the hot air exceeds the maximum temperature, the combustion in the combustor is stopped, and the convection blower is used. By rotating at the maximum number of revolutions according to the selected proportional control pattern, it is possible to prevent the temperature of the hot air from rising abnormally and to enhance safety.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a house under which the present heating device is installed.

FIG. 2 is a perspective view of a heater.

FIG. 3 is a cutaway plan view of a heater.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a cutaway plan view of a mounting portion of a hot air temperature detector.

FIG. 6 is a control circuit diagram.

FIG. 7 is a flowchart showing temperature control by the main heating device.

[Explanation of symbols]

1 underfloor space 3 heater 1
0 Combustor 11 Convection blower 10 Combustor
16 Combustion blower 17 Room temperature detector 18 Under-floor temperature detector
19 Hot air temperature detector 23 Microcomputer

Claims (2)

[Claims] 1. A heating device, comprising: a heater provided with a combustor and a convection blower for blowing air toward the combustor in an underfloor space, and heating a room with warm air from the heater. In a heating device that controls the combustion amount and the rotation speed of the convection blower to control the temperature, the room temperature detector that detects the room temperature, the underfloor temperature detector that detects the underfloor temperature, and both temperature detectors A microcomputer that registers the temperature that has been set, and that the microcomputer sets the amount of combustion in the combustor and the number of revolutions of the convection blower on the basis of the room temperature so as to increase as the number of proportional stages increases. Based on the underfloor temperature, the underfloor temperature proportional control pattern is set so that the amount of combustion in the combustor and the number of revolutions of the convection blower increase as the number of proportional stages increases. And room temperature detector detected And the underfloor temperature proportional control pattern obtained from the difference between the underfloor set temperature set higher than the room temperature set temperature and the temperature detected by the underfloor temperature detector. Compare the size of the proportional stage with the microcomputer, select the smaller proportional stage from the two proportional stages, burn with the amount of combustion corresponding to the selected proportional stage, and rotate the rotary corresponding to the selected proportional stage. A heating device characterized by rotating a convection blower by a number. 2. A hot air temperature detector is provided in a hot air passage, a set temperature and a maximum temperature higher than the set temperature are registered in a microcomputer, and the under-floor temperature proportional control pattern and the room temperature proportional control pattern include a hot air temperature detector. When the temperature exceeds the maximum temperature, the combustion in the combustor is stopped, and a region for rotating the convection blower at the maximum rotation speed is provided, and the hot air temperature detected by the hot air temperature detector determines the set temperature. When it exceeds, the combustion is performed at the combustion amount corresponding to the proportional stage number smaller than the selected proportional stage number, and when the hot air temperature exceeds the maximum value temperature, the combustion in the combustor is stopped, and the convection blower is The heating device according to claim 1, wherein the heating device is rotated at the maximum rotation speed according to the number of proportional stages of the selected proportional control pattern.