JP2003083615A - Controller for combustion warm-air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a necessary information without touching with an operation panel even when the hands of a person approached to a main body are contaminated or when the hands are occupied by a baggage. SOLUTION: When a person has approached to the main body 1 for more than a specified time in front of a detecting element 20 for detecting the person who has approached to the main body 1, a first indication is effected at first in an operating condition indicator 17, subsequently, when the person has been approached for more than a specified time, a second indication, different from the first indication, is effected, further, when the person has been approached for more than a specified time, a third indication, different from the second indication, is effected and, further, when a time more than a specified time has elapsed, the indication is returned to the first indication.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion hot air heater that generates warm air and performs heating. 2. Description of the Related Art In a conventional heater of this type, as shown in Japanese Patent Application Laid-Open No. 2-197714, an object detection sensor for detecting the presence of an obstacle near a discharge port for discharging combustion exhaust gas is used. In some cases, when an obstacle that inhibits emission of combustion exhaust gas is detected by this sensor, combustion is not started or combustion is stopped. Further, as shown in Japanese Patent Application Laid-Open No. 2-195116, an object detection sensor for detecting whether or not an obstacle exists in front of a main body that emits warm air or radiant heat is provided. In some cases, when it is detected that an obstacle is present ahead, combustion is not started or combustion is stopped, and the state is displayed on a display unit provided on the front side of the main body. Further, as shown in Japanese Patent Application Laid-Open No. Hei 3-1011, a human body detection sensor for detecting the presence or absence of a person is provided on the front of the main body, and if this sensor cannot detect a person, the amount of combustion is reduced or stopped. Some have tried to do so. [0005] In the above-mentioned prior art, the means of using any of the sensors is limited to only use as a mere safety device, which is practically difficult to use. That is, when the presence of an obstacle in front of the main body is detected by the sensor, the combustion is not started or the combustion is stopped, and the state is displayed on a display unit provided on the front side of the main body. Therefore, even if you try to operate the operation panel while looking at the display, it is difficult to touch the operation panel if your hands are dirty or your hands are blocked by luggage. there were. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and specifically, has a main body of a combustion hot air heater and a main body provided in the main body. Burner, a hot air outlet provided on the front surface of the main body, a blower fan for discharging hot air from the hot air outlet, an operation start instruction device, an operation stop instruction device, a room temperature setting device, and an operation status display. An operation panel in which a heater is installed, a detection element attached to the warm air outlet side for detecting that a person approaches the main body, and the operation start instruction device, the operation stop instruction device, the room temperature setting device, and the detection element In the combustion hot air heater equipped with the central control device for controlling the burner, the blower fan and the operation status indicator based on the signal of the above, a person for more than a specified time in front of the sensing element including the hot air outlet, Approach First, the first display is performed on the operation status indicator, and then, when approaching for a certain time or more, a second display different from the first display is performed. A third display different from the second display is performed when the vehicle is approaching for the above time, and the display is returned to the first display when a certain time or more has elapsed. [0007] By the above means, during operation, the room temperature is usually displayed on the operation status display,
When a person approaches, change to the set room temperature display, then change to the current time display, change to the remaining operation time display, and then display the current room temperature, so that it is necessary without touching the operation panel of the main unit Information can be obtained. [0008] Also, during operation, when the refueling notice is detected while the room temperature is currently being displayed, the display is changed to a refueling detection display, and when a person approaches, the remaining operation time until the fire is extinguished is displayed. The display can be changed to the combustion power display, and further changed to the current time display, and then returned to the room temperature. Thereby, necessary information can be obtained without a person approaching the main body touching the hand. An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIGS. 1 and 2 show a schematic structure of a combustion hot air heater according to the present invention, wherein 1 is a main body of a combustion hot air heater called an oil fan heater, and 2 is provided in a lower portion of the main body 1. The burner 3 is a vaporizer for vaporizing kerosene, and 4 is a heater for heating the vaporizer 3. Reference numeral 8 denotes an oil pan, and 19 denotes an oil supply tank for supplying kerosene to the oil pan 17. 5 is a pump for feeding the kerosene in the oil pan 8 to the vaporizer 3, 6 is a jet nozzle attached to the tip of the vaporizer 3, 18 is an electromagnetic valve for opening and closing the jet nozzle 6, 9 is a burner 2 for burning. A blower fan that blows in air and sends out high-temperature gas generated by combustion to the outside of the main body 1 of the heater, and is attached to the back of the main body 1. Reference numeral 10 denotes a hot air chamber, which is installed so as to cover the upper part of the burner 2 and where the air supplied from the blower fan 9 and the high-temperature combustion gas generated in the burner 2 are mixed to be heated. . Reference numeral 12 denotes a hot air outlet (louver) from which the hot air generated in the hot air chamber 10 is discharged, and is attached to the front surface of the main body 1. Reference numeral 13 denotes an operation panel provided on the upper surface of the main body 1. The operation start instruction device 14, the operation stop instruction device 15, the room temperature setting device 16, and the set room temperature and the present room temperature are displayed as shown in FIG. An operation status indicator 17 is incorporated. Reference numeral 7 denotes a carburetor temperature detecting element for detecting the temperature of the carburetor 3, 21 a flame state detecting device for detecting the presence of a flame by contacting the flame generated in the burner 2, and 22 a burner 2
It is an igniter that ignites. Reference numeral 20 denotes a detecting element comprising an infrared sensor mounted on an upper portion of the front surface (or an upper surface on the front side) of the main body 1 to detect whether or not a person is near the front surface of the main body 1. FIG. 3 illustrates a control system according to one embodiment of the present invention. Reference numeral 23 denotes a central control unit (microcomputer), which has already been described, the operation start instruction unit 14, the operation stop instruction unit 15, and the room temperature. Setting device 16, room temperature detecting device 10, flame state detecting device 21, vaporizer temperature detecting element 7, and detecting element 2
0 is connected to the input side, and the heater 4, the pump 5, the blower fan 9, the operation status indicator 17 and the igniter 2 are connected to the output side.
2 are connected. In such a configuration, when the operation start instructing device 14 is operated to instruct the start of operation, the central controller 23 starts energizing the heater 4 of the vaporizer 3 and detects the vaporizer temperature. The temperature of the vaporizer 3 is detected through the element 7, and when the temperature reaches a combustion startable temperature, the pump 5 is operated to increase the pressure in the vaporizer 3, and the vaporized gas is ejected from the ejection nozzle 6. At the same time, the igniter 22 is operated to cause the burner 2 to generate a flame. Then, when the presence of a flame is confirmed by the flame state detecting device 21, the blower fan 9 is operated to blow air to the warm air chamber 10, and the generated warm air is discharged out of the main body 1 through the warm air outlet 12. I do. After the combustion is started, the central controller 23 controls the carburetor 3 to maintain the temperature required for maintaining the normal combustion.
The heater 4 is controlled while monitoring the signal of the vaporizer temperature detecting element 7. Then, the central controller 23 increases the drive output of the pump 5 to increase the combustion output so that the room temperature set by the room temperature setting device 16 is attained, and aims at maintaining a constant room temperature. Conversely, when the room temperature is high, the central control unit 23
Aims to lower the driving output of the kerosene pump 5 to lower the combustion output and to maintain a constant room temperature. Next, the situation of the presence or absence of a person during the operation and a display example on the operation status display 17 will be described. First, a first display example will be described with reference to the flowchart of FIG. When there is no person near the main body 1,
The room temperature is currently displayed on the operation status display 17. In this state, when a person approaches the main body 1 for a prescribed time (t1), the display is changed to a first display, that is, a set room temperature display. If the person is approaching until a specified time (t3) has elapsed, the display is changed to a third display, that is, the remaining operation time display, and a certain time (t3) is displayed.
After 4), the display returns to the original current room temperature display. Thus, for example, when both hands of a person approaching the main body 1 are closed, the display can be switched without touching the operation panel 13. Next, another display example will be described. When the refueling notice is detected while the room temperature is currently being displayed on the operation status display 17, the display is changed to the refueling notice detection. Next, when a person approaches the main body 1 for a prescribed time (t1), the display is changed to a display of the remaining operation time until refueling is extinguished as a first display. Furthermore, a certain time (t2)
When approaching, the current display is changed to the current combustion power display as the second display. Further, when approaching for a certain time (t3), the present time is displayed as the third display, and after that, a certain time elapses thereafter. Then, it returns to the current room temperature display. As a result, much information can be displayed. In short, when a person approaches the sensing element 20 including the hot air outlet 12 for a certain period of time or more, the first display is first displayed on the operating status display 17 and then the operation condition is displayed. When approaching time, perform a second display different from the first display, and when approaching for a certain time or more, perform a third display different from the second display, When a certain time or more has elapsed, the display is returned to the initial display. Thus, even if the hand of a person approaching the main body 1 is dirty or the hand is blocked by luggage, the operation panel 13 is displayed. Necessary information can be obtained without touching. The first display, the second display, and the third display are not limited to the above two display examples.
Other display examples are also conceivable. Further, these display times can be achieved by incorporating a timer device into the central control device 23, and the specified time until each display can be appropriately set in consideration of various factors such as the driving ability of the main body 1. . As described above, according to the present invention,
In front of the sensing element that detects that a person has approached the main body, when a person approaches for a certain period of time or more, the first display is made on the driving status indicator first, and then for a period of time that exceeds a certain rule. When approaching, performs a second display different from the first display, and further, when approaching for a certain time or more, performs a third display different from the second display, and further, When a certain period of time has elapsed, the display is returned to the initial display. Thus, during driving, the room temperature is normally displayed on the operation status display, but when a person approaches, the room temperature is changed to the set room temperature display, and then to the current time display.
By changing the display to the remaining operation time display and then displaying the current room temperature, necessary information can be obtained without touching the operation panel of the main body. During operation, when a refueling notice is detected while the room temperature is currently being displayed, the display is changed to a refueling detection display, and when a person approaches, the remaining operation time until the fire is extinguished is displayed. The display can be changed to the combustion power display, and then to the current time display, and then returned to the current room temperature. Thereby, necessary information can be obtained without a person approaching the main body touching the hand. That is, even when the hand of a person approaching the main body is dirty or the hand is blocked by luggage, necessary information can be obtained without touching the operation panel.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a schematic configuration of an embodiment of the present invention. FIG. 2 is an explanatory diagram showing a schematic configuration of a combustion unit of the present invention. FIG. 3 is a block diagram illustrating control according to the present invention. FIG. 4 is a flowchart of the present invention. [Description of Signs] 1 Main body 2 Burner 9 Blower fan 12 Hot air outlet 13 Operation panel 14 Operation start instructing device 15 Operation stop instructing device 16 Room temperature setting device 17 Operating status display device 20 Sensing element 23 Central control device (microcomputer)

Claims (1)

Claims 1. A body (1) of a combustion hot air heater, a burner (2) provided in the body (1), and a front face of the body (1). A hot air outlet (12), a blower fan (9) for discharging hot air from the hot air outlet (12), an operation start instruction device (14), an operation stop instruction device (15), and a room temperature setting device ( 16) an operation panel (13) provided with an operation status indicator (17), and a detection element (20) attached to the main body (1) and detecting that a person approaches the main body (1). And the burner (2), the blower fan (9) and the operating condition based on signals from the operation start instruction device (14), the operation stop instruction device (15), the room temperature setting device (16) and the detection element (20). A central control unit (23) for controlling the display (17); When a person approaches the sensing element (20) including the hot air discharge port (12) for a certain time or more in the hot air heater, the first indication is first displayed on the operation status display (17). Perform, and then, when approaching for a certain time or more, perform a second display different from the first display,
Combustion hot air heating characterized by performing a third display different from the second display when approaching for a certain time or more, and returning to the first display when a certain time or more elapses Machine control device.