JP2022175903A - Hot air heater - Google Patents

Abstract

To provide a hot air heater capable of rapidly heating a room while preventing the temperature in the heater from becoming abnormally high.SOLUTION: When a rapid heating operation switch 14 is turned on, a rapid heating operation whereby a combustion amount is made greater than the maximum combustion amount of an automatic operation, is performed for a specified period of time. When the rapid heating operation switch 14 is turned on prior to the passage of a fixed period of time after the rapid heating operation is finished, a restricted rapid heating operation whereby the combustion amount is restricted and fixed at the maximum combustion amount of an automatic operation, is carried out, and hence the room can rapidly be heated by turning on the rapid heating operation switch 14. Also, user's sense of dissatisfaction that the room is insufficiently heated can be mitigated by performing a restricted rapid heating operation at the maximum combustion amount of an automatic operation, namely at the maximum heating power not allowing the inner temperature of a hot air heater 1 to become abnormally high, for a specified period of time, while preventing the inner temperature of the hot air heater 1 from becoming abnormally high to prevent a failure thereof resulting from a continuous performance of the rapid heating operation whereby the combustion amount is made greater than the maximum combustion amount of an automatic operation.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present invention relates to a warm air heater that blows out warm air to heat a room.

Conventionally, in this type of burner, when the rapid heating operation switch is operated and the conditions for starting rapid heating are established within a predetermined time at the beginning of ignition, the amount of combustion in the burner is made larger than the rated amount of combustion. Rapid heating operation is started, and rapid heating operation is stopped when rapid heating stop conditions are satisfied during rapid heating operation, and rapid heating start conditions are satisfied within a predetermined time after rapid heating operation is stopped. Some of them did not perform rapid heating operation. (For example, Patent Document 1)

Japanese Patent Publication No. 03-9384

By the way, in this conventional system, when the interior of the room is completely cold in winter, etc., the amount of combustion in the burner is made larger than the rated amount of combustion only within a predetermined time at the beginning of ignition in order to quickly warm up the room. However, in heating operation after the initial ignition, rapid heating operation that increases the amount of combustion in the burner more than the rated combustion amount cannot be performed. If the window is opened and cold outside air flows in and the room temperature drops sharply, the room will be heated with the rated combustion rate after the window is closed, so the room temperature rises slowly and it takes time to warm up the room. It was closed.

In order to solve the above problems, in claim 1 of the present invention, a combustion unit that performs combustion, a convection fan that uses the heat generated in the combustion unit as hot air for heating, and a an operation switch for performing automatic operation for adjusting the amount of combustion, a rapid heating operation switch for performing a rapid heating operation for a predetermined time period in which the amount of combustion is greater than the maximum amount of combustion in the automatic operation, the operation switch and the rapid heating operation A hot air heater comprising a control section for controlling operation according to the operation of a switch, and a timer section comprising first timer means for timing the predetermined time and second timer means for timing the predetermined time. When the rapid heating operation ends, the control unit restores the combustion amount to the combustion amount by the automatic operation and starts timing of the second timer means. If the rapid heating operation switch is operated before the timer means of 2 elapses the predetermined time, the limited rapid heating operation in which the combustion amount is limited to the maximum combustion amount of the automatic operation is performed for the predetermined time. It is something to do.

Further, in claim 2, when the rapid heating operation switch is operated after the lapse of the predetermined time from the end of the rapid heating operation in which the combustion amount is made larger than the maximum combustion amount of the automatic operation, and performing the rapid heating operation in which the combustion amount is larger than the maximum combustion amount of the automatic operation for the predetermined time.

Further, in claim 3, when the limited rapid heating operation ends, the control unit restores the combustion amount to the combustion amount by the automatic operation, and after the limited rapid heating operation ends, the second timer means counts the time. does not start anew.

According to claim 1 of the present invention, when a rapid heating operation switch is operated for a predetermined time to perform a rapid heating operation that makes the combustion amount larger than the maximum combustion amount of automatic operation, the combustion amount is increased even during operation to the maximum combustion amount of automatic operation. Since the rapid heating operation is performed for a predetermined period of time, if the room temperature drops suddenly due to the cold outside air flowing in by opening the window for ventilation during operation, the rapid heating operation switch can be operated to quickly cool the room. can be warmed to

In addition, if the rapid heating operation switch is operated before the predetermined time has elapsed after the rapid heating operation ends, the limited rapid heating operation with the maximum combustion amount in automatic operation is performed for a predetermined period of time, so the combustion amount is automatically operated. By continuously performing rapid heating operation that exceeds the maximum combustion amount in the hot air heater, it is possible to prevent the inside of the hot air heater from becoming abnormally hot and malfunctioning. By performing the limited rapid heating operation for a predetermined time with the maximum combustion amount of the automatic operation, which is the maximum thermal power with the thermal power that does not reach the limit, it is possible to reduce the user's lack of feeling of heating.

Further, according to claim 2, when the rapid heating operation switch is operated after a certain period of time has passed since the rapid heating operation that makes the combustion amount larger than the maximum combustion amount of the automatic operation is completed, the combustion amount is reduced to the automatic operation. Since the rapid heating operation that makes the combustion amount larger than the maximum combustion amount is performed, continuous rapid heating operation that makes the combustion amount larger than the maximum combustion amount of automatic operation causes the inside of the hot air heater to become abnormally hot and break down. It is possible to rapidly warm the room by repeatedly performing a rapid heating operation in which the amount of combustion is made larger than the maximum amount of combustion in automatic operation at fixed time intervals while preventing the exhaustion from occurring.

In addition, according to claim 3, after the limited rapid heating operation in which the combustion amount is limited to the maximum combustion amount of the automatic operation is completed, the second timer means does not restart timing, so the limited rapid heating operation can be performed. The time until the rapid heating operation can be resumed does not become long, and the rapid heating operation can be performed after a certain time t has passed after the rapid heating operation is completed, and the rapid heating operation can be performed in the shortest time while preventing damage to the equipment. can be repeated at intervals of

1 is an external perspective view of a warm air heater showing an embodiment of the present invention; FIG. The same side view sectional view. Same configuration diagram. FIG. 2 is a configuration diagram of combustion fan motor driving means and convection fan motor driving means; The flowchart figure of the same rapid heating operation.

Next, one embodiment to which the present invention is applied will be described based on the drawings.
A warm air heater 1 according to the present embodiment is a heating device that blows out warm air to raise the indoor temperature, as shown in FIGS. 1 and 2 .

As shown in FIG. 2, the hot air heater 1 includes an appliance body 2, a combustion unit 3 that burns fuel oil, a convection fan 4 that sends out hot air, a hot air outlet 5, and a warm air outlet frame 6. , a movable louver 7 , a swing device 8 for swinging the movable louver 7 within a predetermined swing angle range, and a control section 9 for controlling the operation.
For the convenience of explanation, the hot air heater 1 is referred to as left, right, front, back, and up and down directions when viewed from the user.

As shown in FIG. 1, the instrument main body 2 includes a front panel 10, an operation section 11 having various switches, and a display section 12 consisting of a liquid crystal panel for displaying operation contents and the like. . The operation unit 11 is provided with an operation switch 13, a rapid heating operation switch 14, a room temperature setting switch 15 for setting the room temperature, and various other switches.
(2) The rapid heating operation switch 14 is a switch that gives the control unit 9 a command to perform a rapid heating operation for a predetermined period of time in which the amount of combustion is greater than the maximum amount of combustion for automatic operation.

The combustion section 3 is a device for burning fuel, and the combustion section 3 includes a vaporizer 16 for vaporizing the fuel, a vaporization heater (not shown) for heating and vaporizing the fuel, and an ignition means for igniting by spark discharge. 17, a burner 18 for burning vaporized fuel oil such as petroleum, a combustion cylinder 19 for forming a combustion space, a combustion fan 20 for blowing combustion air to the burner 18, and a DC motor. It has a combustion fan motor 21 to drive and a blower pipe 22 .

The convection fan 4 is attached to a convection fan motor 24 consisting of a DC motor attached to a fan guard 23 of the hot air intake on the back. A blowing box 25 is arranged from the convection fan 4 to the hot air outlet 5. - 特許庁The blower box 25 is provided with a blower box opening 26 on the front surface, and guides the hot air blown by the convection fan 4 from the blower box opening 26 to the hot air outlet 5 .
The hot air outlet 5 is an opening that blows out hot air forward into the room, and is provided in the front panel 10 .

The movable louvers 7 are arranged at the hot air outlet 5, and consist of a first movable louver 27 arranged at the upper stage, a second movable louver 28 arranged below the first movable louver 27, and is moved by the louver drive means 29 .
In the following description, the movable louvers 7 (27, 28) are collectively referred to as the movable louver 7 when there is no need to distinguish between the first movable louver 27 and the second movable louver 28. .

The movable louver 7 has a closed state, a fixed posture in which hot air is sent in a predetermined stationary posture, and a movable posture in which it swings within a predetermined swing angle range.
A closed state is a state in which operation is stopped. The fixed posture is a state in which the movable louver 7 is fixed at a predetermined angle and operated. The movable posture is a posture in which a rocking motion (swing motion) is performed.

The electromagnetic pump 30 supplies fuel oil to the burner 18 and is driven by electromagnetic pump driving means 31 .
The room temperature detection means 32 detects the room temperature and outputs a signal to the control section 9. The flame detection means 33 outputs a signal to the control section 9 when the combustion section 3 is ignited, and outputs a signal to the control section 9 when the combustion section 3 is extinguished. stop the output of

A timer unit consisting of a first timer means 34 for measuring a predetermined time T and a second timer means 35 for measuring a fixed time t starts measuring time in response to a signal from the control unit 9, and measures a predetermined time. , and outputs a signal to the control unit 9 .

The combustion fan motor 21 is driven by combustion fan motor drive means 36 and the convection fan motor 24 is driven by convection fan motor drive means 37 .
Both the combustion fan motor driving means 36 and the convection fan motor driving means 37, as shown in FIG. From a rotation speed detection circuit 39, a motor control circuit 40 that controls the motor by signals from the rotation speed setting circuit 38 and the rotation speed detection circuit 39, and a motor drive circuit 41 that drives the motor by the signal from the motor control circuit 40 Become.

The operation of the hot air heater 1 according to the embodiment of the present invention configured as described above when the rapid heating operation switch 14 is operated during automatic operation will be described.
As shown in FIG. 5, when the rapid heating operation switch 14 is operated by the user (not shown) during automatic operation (S1), the control unit 9 checks whether the second timer means 35 is counting. . (S2)

When the second timer means 35 does not count in (S2), the controller 9 starts the rapid heating operation. (S3)
First, the control unit 9 outputs a signal to the first timer means 34 to start counting the predetermined time T. As shown in FIG. (S4)
The predetermined time T is the time during which the rapid heating operation is performed, and for example, 180 seconds is measured in this embodiment.
Next, the control unit 9 displays the time measured by the first timer means 34 on the display unit 12, which is 180 seconds, which is the predetermined time T in this embodiment, and then subtracts the number displayed by the display unit 12. to display the remaining time of rapid heating operation. (S5)

Next, the control unit 9 sets the combustion amount to a combustion amount that is a predetermined amount larger than the maximum combustion amount during automatic operation, or 10% larger than the maximum combustion amount during automatic operation in this embodiment. (S6)
As a result, the electromagnetic pump driving means 31 causes the electromagnetic pump 30 to feed 10% more fuel oil than the maximum oil feeding amount during automatic operation, and the combustion fan motor driving means 36 and the convection fan motor driving means 37 operate The combustion fan motor 21 and the convection fan motor 24 are driven at a rotation speed 10% higher than the maximum rotation speed of .

In the above (S6), the combustion amount is set to a combustion amount 10% larger than the maximum combustion amount during automatic operation, but the maximum combustion amount during automatic operation is sufficiently safe for the limit combustion amount of the hot air heater 1. The amount of combustion that is 10% higher than the maximum amount of combustion during automatic operation is the amount of combustion that can sufficiently ensure safety in a short period of time and does not cause damage to equipment.

Then, when the first timer means 34 times the predetermined time T, ie, 180 seconds in this embodiment (S7), the control section 9 terminates the time measurement by the first timer means 34 (S8), The display of the remaining time of the rapid heating operation on the display unit 12 is terminated (S9), the rapid heating operation is terminated (S10), and the rapid heating operation is changed to automatic operation. (S11)

Then, the control unit 9 outputs a signal to the second timer means 35 to start counting the fixed time t. (S12)
The fixed period of time t is a period of time during which the rapid heating operation is not performed after the rapid heating operation has been performed, and for example, 20 minutes is measured in this embodiment.
Then, when the second timer means 35 measures a certain time t, in this embodiment, when 20 minutes is measured (S13), the control unit 9 causes the second timer means 35 to measure the time. It ends (S14) and returns to (S1).

Further, when the rapid heating operation switch 14 is operated (S15) when the second timer means 35 has not elapsed the predetermined time t in (S13), the controller 9 returns to (S2). .

Further, when the second timer means 35 is counting time in (S2), the controller 9 starts the limited rapid heating operation. (S16)
When the rapid heating operation is performed, the combustion amount is 10% larger than the maximum combustion amount during automatic operation for a predetermined time T, so the temperature of the combustion unit 3 is higher than during operation with the maximum combustion amount during automatic operation. become.
In order to lower the temperature to at least the temperature during operation with the maximum combustion amount during automatic operation and protect the equipment, the rapid heating operation is not performed for a certain time t after the rapid heating operation is completed.

First, the control unit 9 outputs a signal to the first timer means 34 to start counting the predetermined time T. As shown in FIG. (S17)
This predetermined time T is the time during which the limited rapid heating operation is performed, and for example, 180 seconds is measured in this embodiment.
Next, the control unit 9 causes the display unit 12 to display a predetermined time T, which is 180 seconds in this embodiment, measured by the first timer means 34, and then subtracts and displays the number displayed by the display unit 12 to limit rapid speed. Displays the remaining time of heating operation. (S18)

Then, the control unit 9 sets the combustion amount to the maximum combustion amount during automatic operation. (S19)
As a result, the electromagnetic pump driving means 31 causes the electromagnetic pump 30 to feed the maximum oil feeding amount during automatic operation, and the combustion fan motor driving means 36 and the convection fan motor driving means 37 rotate at the maximum speed during automatic operation. A number drives the combustion fan motor 21 and the convection fan motor 24 .

Then, when the first timer means 34 times the predetermined time T, ie, 180 seconds in this embodiment (S20), the control section 9 terminates the time measurement by the first timer means 34 (S21), The display of the remaining time of the limited rapid heating operation on the display unit 12 is ended (S22), the limited rapid heating operation is ended (S23), and the limited rapid heating operation is changed to automatic operation (S24), (S13). It advances to.

In this way, even if the limited rapid heating operation ends, the second timer means 35 does not start counting again, so that the limited rapid heating operation does not lengthen the time until the rapid heating operation can be restarted. Instead, the rapid heating operation can be performed after a certain period of time t has passed after the rapid heating operation is finished, and the rapid heating operation can be repeated at the shortest time interval while preventing damage to the appliance.

In both the rapid heating operation and the limited rapid heating operation, the subtraction display of the numbers displayed by the display unit 12 may be the same, or may be displayed differently by changing the color.

Further, in this embodiment, the operation when the rapid heating operation switch 14 is operated during automatic operation has been described, but when the rapid heating operation switch 14 is operated immediately after operating the operation switch 13 from the operation stop state, normal After ignition, the engine may be operated with the maximum combustion amount during automatic operation, and when the combustion is stabilized, the rapid heating operation may be started.

3 combustion section 4 convection fan 9 control section 13 operation switch 14 rapid heating operation switch 34 first timer means 35 second timer means

Claims (3)

A combustion unit that performs combustion, a convection fan that uses the heat generated in this combustion unit as hot air for heating, an operation switch for automatic operation that adjusts the amount of combustion so that the indoor temperature reaches the set temperature, and the amount of combustion is larger than the maximum combustion amount of the automatic operation, a rapid heating operation switch that performs a rapid heating operation for a predetermined time, a control unit that controls the operation according to the operation of the operation switch and the rapid heating operation switch, and the predetermined In a hot air heater provided with a timer unit comprising a first timer means for measuring time and a second timer means for measuring a predetermined time, the control unit controls combustion when the rapid heating operation ends. The amount is returned to the amount of combustion by the automatic operation and the timing of the second timer means is started, and before the timing of the second timer means has passed the predetermined time after the rapid heating operation is finished A hot-air heater, wherein when a rapid heating operation switch is operated, a limited rapid heating operation is performed for the predetermined period of time in which the combustion amount is limited to the maximum combustion amount of the automatic operation and fixed. The control unit adjusts the combustion amount to the automatic operation when the rapid heating operation switch is operated after the lapse of the predetermined time from the end of the rapid heating operation that makes the combustion amount larger than the maximum combustion amount of the automatic operation. 2. The hot air heater according to claim 1, wherein the rapid heating operation in which the amount of combustion is greater than the maximum combustion amount of is performed for the predetermined time. When the limited rapid heating operation ends, the control unit restores the combustion amount to the combustion amount by the automatic operation, and does not cause the second timer means to restart timing after the limited rapid heating operation ends. 3. The warm air heater according to claim 1 or 2.

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