JP2007187404A - Hot air heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot air heating device stopping heating operation to improve safety when a gas different from a specified kind of the hot air heating device is used. <P>SOLUTION: This hot air heating device comprises: a burner 1 burning gas; a combustion chamber 2 mixing air taken-in from the outside and combustion gas generated by the burner 1 to form hot air; an air fan 4 sending out the hot air from the combustion chamber 2; and a hot air blowo-ff port 5 blowing off the hot air by the air fan. The hot air heating device has a controller 17 controlling operation of the hot air heating device. When the hot air heating device is operated by the gas different from the specified kind of the hot air heating device, the controller 17 detects flame output by abnormal combustion of the burner 1, and stops the operation when the flame output becomes prescribed output or above in a prescribed time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a control configuration of a hot air heating apparatus that uses gas as fuel.

Conventionally, this kind of hot air heating device is transmitted to the control device when the operation switch is turned on and starts the heating combustion operation, and when the operation switch is stopped, the operation stop signal is transmitted to the control device and output to the gas shutoff valve. The gas shutoff valve was closed. And the warm air heating apparatus was comprised on the assumption that the same gas type as the specification gas type was used (for example, refer patent document 1). FIG. 7 shows an example of a control flowchart in the conventional hot air heating apparatus.
JP 2002-357319 A

  However, in the conventional configuration, since the hot air heating device is made on the assumption that the same gas type as the specification gas type of the hot air heating device is used, it differs from the specification gas type of the hot air heating device. When the hot air heating apparatus is operated using the gas type, there is a problem that the user is unaware until some trouble occurs in the device, although the burner is abnormally burning.

    In view of the above conventional problems, the problem to be solved by the present invention is to improve the safety by stopping the heating operation when a gas type different from the specification gas type of the hot air heating device is used. It is to provide a warm air heater.

  In order to solve the above problems, the hot air heating apparatus of the present invention provides a flame output due to abnormal combustion of a burner when the hot air heater is operated with a gas type different from the specification gas type of the hot air heater. And a control means configured to stop the operation when the flame output becomes equal to or higher than a predetermined output at a predetermined time. As a result, when the hot air heater is operated with a gas type different from the specification gas type of the hot air heater, the operation is automatically stopped, and safety in use of the device is achieved.

    When the hot air heater is operated with a gas type different from the specification gas type of the hot air heater, the hot air heater of the present invention automatically stops the operation by the control means and is safe for use of the device. Can be achieved.

  A first aspect of the invention is a burner that burns gas, a combustion chamber that mixes combustion gas generated by the burner and air taken in from the outside to make warm air, and a blower fan that sends warm air from the combustion chamber And a hot air heater configured with a hot air outlet that blows out hot air from the blower fan, the control means controlling the operation of the hot air heater, and the control means is the hot air heater When the heater is operated with a gas type different from the specification gas type of the hot air heater, the flame output due to the abnormal combustion of the burner is detected, and the operation is performed when the flame output exceeds a predetermined output at a predetermined time. It is the warm air heating apparatus comprised so that it might stop.

Thereby, when the control means is operated with a gas type different from the specification gas type of the hot air heater, it detects the flame output due to the abnormal combustion of the burner, and if the flame output becomes a predetermined output or more at a predetermined time Since the operation is shut down, the hot air heater is automatically stopped, and an unsafe event due to an error in the gas used by the device can be prevented.

  The second aspect of the invention is particularly the control means of the first aspect of the invention, in which the flame output due to abnormal combustion of the burner when the hot air heater is operated with a gas type different from the specified gas type of the hot air heater. It is configured to have a notification sound generation function for detecting and notifying abnormality, and when the hot air heater is operated with a gas type different from the specified gas type, the control means will notify the abnormality of operation. It is possible to notify the user of an unsafe event due to an error in the gas used by the device.

    According to a third aspect of the invention, in particular, the control means of the first aspect of the invention provides a flame output due to abnormal combustion of a burner when the hot air heater is operated with a gas type different from the specified gas type of the hot air heater. When the hot air heater is operated with a different gas type because it detects and displays the abnormal state on the operation section, and further has a notification sound generation function to notify the abnormality , When the control means detects the flame output due to the abnormal combustion of the burner, it displays an abnormality on the operation section, and further informs the user of the abnormal state by notifying the abnormal sound. The user can be notified more reliably.

    According to a fourth aspect of the present invention, in particular, the control means according to any one of the first to third aspects is provided with a burner when the hot air heater is operated with a gas type different from the specification gas type of the hot air heater. The flame output due to the abnormal combustion of the burner is detected, and the flame output due to the abnormal combustion of the burner is configured to disable the operation of the hot air heater after the predetermined number of detections, so the gas used is different When the hot air heater is started many times for the type, the control means disables the operation of the hot air heater when the detection of the flame output due to the abnormal combustion of the burner comes after a predetermined number of detections.

    The control means may be configured so that when the hot air heater becomes inoperable, the detection function is restored by operating the switch for canceling the inoperability by a specialized after-sales service person or by inputting a cipher. .

    Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment. Further, in the description of the present embodiment, parts having the same configuration and the same operational effects are denoted by the same reference numerals, and redundant description will not be given.

(Embodiment 1)
FIG. 1 is a configuration diagram of the hot air heating apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a control flow of the hot air heating apparatus. The burner 1 burns the supplied gas. The combustion chamber 2 guides the rise of the combustion gas generated by the combustion of the gas by the burner 1. And the air taken in from the outside near the upper part of the combustion chamber 2 mixes, and warm air is formed. A combustion detector 3 for detecting a flame caused by the combustion of the burner 1 and outputting the flame as an electric signal is disposed above the burner 1 in the combustion chamber 2.

    Also, below the burner 1, there is provided a blower fan 4 for sending the above-described warm air to the warm air outlet 5 that opens at the lower front of the case 6 that is the outer shell of the warm air heater. The blower fan 4 has a fan motor 7 attached to the side surface, and a hot air outlet 5 is located in front of the blower fan 4. A large number of air inlets 9 and air filters 10 for taking in convection air 8 used for warm air and combustion are provided on the rear surface of the case 6.

The room temperature detector 11 is provided inside the air inlet 9 and detects the room temperature based on the temperature of the inflowing air. The blower amount control device 12 controls the number of rotations of the fan motor 7 to control the amount of air taken in from the air inlet 9 by the blower fan 4 and the amount of warm air sent out from the hot air outlet 5. The gas amount control device 13 controls the amount of gas supplied to the burner 1 and supplies / cuts off the gas.

    The operation operation unit 14 is arranged at the upper part of the case 6 and is provided with an operation switch 15 and a room temperature setting switch 16 for turning heating operation on and off. The control device 17 as a control means includes an air flow rate control device 12 and the like, and is composed of a microcomputer and its peripheral circuits, and detects abnormal temperatures of the burner 1, the fan motor 7, the combustion detector 3, the room temperature detector 11, and the combustion chamber 2. Components such as the temperature detector 18 to be detected, the operation switch 15, the room temperature setting switch 16, and the gas amount control device 13 are electrically connected as indicated by the broken line in the figure, and the temperature of the room becomes the temperature of the temperature setting switch 16. A program for executing normal heating operation and stop (control flow of operation described below) for controlling the components is incorporated.

    Further, the control device 17 executes the control flow shown in FIG. 2 and when the hot air heater is operated using a gas type different from the specification gas type of the hot air heater, the abnormal combustion of the burner 1 is performed. A program for stopping the operation when the flame output is detected via the combustion detector 3 and the flame output becomes equal to or higher than a predetermined output at a predetermined time is also incorporated.

    The operation operation unit 14 is provided with a display lamp (not shown) for displaying the operation and stop of the operation switch 15 and the room temperature setting switch 16.

  Next, the operation when the normal air heating operation is performed using the same gas type as the specification gas type determined at the time of manufacture of the hot air heater will be described. When the operation switch 15 is pressed, the blower fan 4 is rotated by the control device 17 and gas is supplied from the gas amount control device 13 to the burner 1, and the burner 1 burns a mixed gas of gas and combustion air by ignition. The generated combustion gas, which is high-temperature exhaust gas, is mixed with the convection air that has passed through the air suction port 9 through the air filter 10 in the air passage 2a in the upper part of the combustion chamber 2 as indicated by an arrow. .

    The mixed hot air is sent out from the hot air outlet 5 at the lower part of the front surface for heating by the blower fan 4 whose rotation of the fan motor 7 is controlled by the blower control device 12. And the control apparatus 17 controls so that it may become the temperature set with the room temperature setting switch 16, and normal heating operation is performed. Of course, when the operation switch 15 is pressed again, the control device 17 closes the gas amount control device 13 to cut off the supply of gas to the burner 1, and after a certain period of time, stops the operation of the blower fan 4 and performs the heating operation. Stop.

Next, the operation will be described with reference to FIG. 2 for an abnormal heating operation when a user accidentally purchases a hot air heater with a specification gas different from the gas type at home and connects it to a gas plug at home. .
First, the operation switch 15 is operated to start the heating operation (S-1). This heating operation is started, and combustion gas is generated in the burner 1 by ignition, and the combustion detector 3 is heated by the combustion gas to detect a flame, and its output increases (s-2).
And since the control apparatus 17 has started operation by supplying different gases to the hot air heater, the flame detection output from the combustion detector 3 heated by the combustion gas of the burner 1 is given at a predetermined time. The detection signal of the flame output due to the abnormal combustion of the burner 1 that reaches the value is taken in (s-3). As a result, the control device 17 determines that it is abnormal, closes the gas amount control device 13 to cut off the supply of gas to the burner 1, stops the operation of the blower fan 4 after a certain time, and stops the heating operation. (S-4).

    As described above, according to the present embodiment, it is possible to prevent an unsafe event due to an error in the gas used in the hot air heater.

(Embodiment 2)
FIG. 3 shows a control flow of the hot air heating apparatus in Embodiment 2 of the present invention. In addition, since the structure of the external appearance of a warm air heating apparatus is the same as FIG. 1 of Embodiment 1, it demonstrates using this, centering on a different control apparatus.

    When the hot air heater is operated using a gas type different from the specification gas type of the hot air heater by executing the control flow shown in FIG. There is also a built-in program for detecting the flame output via the combustion detector 3 and stopping the operation when the flame output exceeds a predetermined output at a predetermined time, for example, when the flame output reaches an output increase value of xmv / t seconds. ing.

    Next, the operation when the normal air heating operation is performed using the same gas type as the specification gas type determined at the time of manufacture of the hot air heater is the same as that described in the first embodiment.

Next, the operation of the abnormal heating operation when the user accidentally purchased a hot air heater with a specification gas different from the gas type at home and connected to the gas plug at home will be explained according to FIG. To do.
First, the operation switch 15 is operated to start the heating operation (S-5). This heating operation is started, and combustion gas is generated in the burner 1 by ignition, and the combustion detector 3 is heated by the combustion gas to detect a flame, and its output increases (s-6).
And since the control apparatus 17 has started operation by supplying different gases to the hot air heater, the flame detection output from the combustion detector 3 heated to the combustion gas of the burner 1 is increased by xmv / t seconds. The detection signal of the flame output due to the abnormal combustion of the burner 1 is taken in (s-3). As a result, the control device 17 determines that it is abnormal, closes the gas amount control device 13 to cut off the supply of gas to the burner 1, stops the operation of the blower fan 4 after a certain time, and stops the heating operation. (S-8).

    As described above, according to the present embodiment, it is possible to prevent an unsafe event due to an error in the gas used in the hot air heater.

(Embodiment 3)
FIG. 4 shows a control flow of the hot air heating apparatus in Embodiment 3 of the present invention. In addition, since the structure of the external appearance of a warm air heating apparatus is the same as FIG. 1 of Embodiment 1, it demonstrates using this, centering on a different control apparatus.

  When the hot air heater is operated using a gas type different from the specification gas type of the hot air heater by executing the control flow shown in FIG. The flame output is detected via the combustion detector 3. When the flame output exceeds a predetermined output at a predetermined time, for example, when the flame output reaches an output increase value of xmv / t seconds, the operation is stopped and an abnormal warning sound is generated. It also has a built-in program for a notification sound generating function for notifying the user.

    Next, the operation when the normal air heating operation is performed using the same gas type as the specification gas type determined at the time of manufacture of the hot air heater is the same as that described in the first embodiment.

Subsequently, the abnormal heating operation when a user accidentally purchases a hot air heater with a specification gas different from the gas type at home and uses it connected to the gas plug at home will be explained with reference to FIG. To do.
First, the operation switch 15 is operated to start the heating operation (S-9). This heating operation is started, and combustion gas is generated in the burner 1 by ignition, and the combustion detector 3 is heated by the combustion gas to detect a flame, and its output increases (s-10).
And since the control apparatus 17 has started operation by supplying different gases to the hot air heater, the flame detection output from the combustion detector 3 heated to the combustion gas of the burner 1 is increased by xmv / t seconds. The detection signal of the flame output due to the abnormal combustion of the burner 1 is taken in (s-11). As a result, the control device 17 determines that there is an abnormality, closes the gas amount control device 13 to shut off the supply of gas to the burner 1, emits an abnormal warning sound, and operates the blower fan 4 after a certain time. The heating operation is stopped (s-12).

    As described above, according to the present embodiment, it is possible to prevent an unsafe event due to an error in the gas used in the hot air heater, and to reliably notify the user of the occurrence of an abnormal state due to a warning sound.

(Embodiment 4)
FIG. 5 shows a control flow of the hot air heating apparatus in Embodiment 4 of the present invention. In addition, since the structure of the external appearance of a warm air heating apparatus is the same as FIG. 1 of Embodiment 1, it demonstrates using this, centering on a different control apparatus.

    When the hot air heater is operated using a gas type different from the specification gas type of the hot air heater by executing the control flow shown in FIG. The flame output is detected via the combustion detector 3. When the flame output exceeds a predetermined output at a predetermined time, for example, when the flame output reaches an output increase value of xmv / t seconds, the operation is stopped and an abnormal warning sound is generated. And a program for causing all display lamps provided in the driving operation unit 14 to flash.

    Next, the operation when the normal air heating operation is performed using the same gas type as the specification gas type determined at the time of manufacture of the hot air heater is the same as that described in the first embodiment.

Subsequently, the abnormal heating operation when the user accidentally purchases a hot air heater with a specification gas different from the gas type at home and uses it connected to the gas plug at home will be explained with reference to FIG. To do.
First, the operation switch 15 is operated to start the heating operation (S-13). This heating operation is started, and combustion gas is generated in the burner 1 by ignition, and the combustion detector 3 is heated by the combustion gas to detect a flame, and its output increases (s-14).
And since the control apparatus 17 has started operation by supplying different gases to the hot air heater, the flame detection output from the combustion detector 3 heated to the combustion gas of the burner 1 is increased by xmv / t seconds. The detection signal of the flame output due to the abnormal combustion of the burner 1 is taken in (s-15). As a result, the control device 17 determines that there is an abnormality, closes the gas amount control device 13 to shut off the supply of gas to the burner 1, emits an abnormal warning sound, and is provided with a display lamp provided in the operation unit 14 Are flashed, and after a certain time, the operation of the blower fan 4 is stopped and the heating operation is stopped (s-16).

    As described above, according to the present embodiment, it is possible to prevent an unsafe event due to a mistake in the gas used in the hot air heater, and to ensure the occurrence of an abnormal state by flashing a warning sound and a display lamp to the user. I can inform you.

(Embodiment 5)
FIG. 6 shows a control flow of the hot air heating apparatus in Embodiment 5 of the present invention. In addition, since the structure of the external appearance of a warm air heating apparatus is the same as FIG. 1 of Embodiment 1, it demonstrates using this, centering on a different control apparatus.

When the hot air heater is operated using a gas type different from the specification gas type of the hot air heater by executing the control flow shown in FIG. The flame output is detected via the combustion detector 3. When the flame output exceeds a predetermined output at a predetermined time, for example, when the flame output reaches an output increase value of xmv / t seconds, the operation is stopped and an abnormal warning sound is generated. And a program for causing all display lamps provided in the driving operation unit 14 to flash.

    Further, the controller 17 is operated using a gas type different from the specified gas type of the hot air heater, that is, the detection of the flame output due to the abnormal combustion of the burner 1 is performed after a predetermined number of detections. Disabling the operation of the hot air heater, and by the operation of the switch that cancels the inoperability by an after-service person, or by entering a code, it differs from the original normal heating operation and the specification gas type of the hot air heater There is also a built-in program that restores the function of detecting that the vehicle has been operated using the same gas type.

    Next, the operation when the normal air heating operation is performed using the same gas type as the specification gas type determined at the time of manufacture of the hot air heater is the same as that described in the first embodiment.

Next, the operation of the abnormal heating operation when the user accidentally purchases a hot air heater with a specification gas different from the gas type at home and uses it connected to the gas plug at home will be described with reference to FIG. To do.
First, the operation switch 15 is operated to start the heating operation (S-17). This heating operation is started, and combustion gas is generated in the burner 1 by ignition, and the combustion detector 3 is heated by the combustion gas to detect a flame, and its output increases (s-18).
And since the control apparatus 17 has started operation by supplying different gases to the hot air heater, the flame detection output from the combustion detector 3 heated to the combustion gas of the burner 1 is increased by xmv / t seconds. The detection signal of the flame output due to the abnormal combustion of the burner 1 is taken in (s-19). As a result, the control device 17 determines that there is an abnormality, closes the gas amount control device 13 to shut off the supply of gas to the burner 1, emits an abnormal warning sound, and is provided with a display lamp provided in the operation unit 14 Are blinked, and the operation of the blower fan 4 is stopped after a certain time, and the heating operation is stopped (s-20).

    In particular, in the present embodiment, the user does not notice the above-mentioned abnormality or ignores it and presses the operation switch 15 again to start the heating operation, for example, up to 5 times by the above-described control. Thereafter, the control device 17 disables the operation for starting the operation of the hot air heater.

    In addition, the operation was performed using a gas type different from the original normal heating operation and the specification gas type of the hot air heater by the operation of the switch for canceling the inoperability or the input of the encryption by the after-service person. It is possible to use the appliance safely by replacing it with a hot air heater with a specification gas that matches the type of gas at home, after receiving an explanation from an after-sales servicer. become.

    As described above, the hot air heater according to the present invention automatically stops the operation by the control means when the hot air heater is operated with a gas type different from the specification gas type of the hot air heater. It is intended for safety in use of equipment, and can be widely applied to gas appliances in which the type of specification gas is determined at the time of manufacture.

1 is a schematic configuration diagram of a hot air heating device according to Embodiment 1 of the present invention. Control flow chart of hot air heating device in embodiment 1 Control flow chart of hot air heating device in embodiment 2 of the present invention Control flow chart of hot air heating device in embodiment 3 of the present invention Control flow chart of hot air heating device in embodiment 4 of the present invention Control flow chart of hot air heating device in embodiment 5 of the present invention Control flow chart of conventional hot air heater

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Burner 2 Combustion chamber 4 Blower fan 5 Hot air outlet 14 Operation operation part 17 Control apparatus (control means)

Claims (4)

A burner that burns gas, a combustion chamber that mixes combustion gas generated by the burner and air taken in from the outside to form hot air, a blower fan that sends warm air from the combustion chamber, and the blower fan A hot air heater configured with a hot air outlet that blows out hot air, and has control means for controlling the operation of the hot air heater, wherein the control means includes the hot air heater. It is configured to detect the flame output due to abnormal combustion of the burner when operated with a gas type different from the specification gas type of the air heater, and stop the operation when the flame output exceeds a predetermined output at a predetermined time Warm air heater. The control means has a notification sound generating function for detecting a flame output due to abnormal combustion of the burner when the hot air heater is operated with a gas type different from the specification gas type of the hot air heater and notifying the abnormality. The hot-air heating device according to claim 1, comprising: The control means detects the flame output due to abnormal combustion of the burner when the hot air heater is operated with a gas type different from the specified gas type of the hot air heater, and displays the abnormal state on the operation section. Furthermore, the warm air heating apparatus of Claim 1 which has the notification sound generation function which alert | reports abnormality. The control means detects the flame output due to abnormal combustion of the burner when the hot air heater is operated with a gas type different from the specification gas type of the hot air heater, and the flame output due to the abnormal combustion of the burner is detected. The hot air heating apparatus according to any one of claims 1 to 3, wherein the detection is performed after a predetermined number of detection times, and the operation of the hot air heater is disabled.