JPH0646160U - Hot air heater - Google Patents

Abstract

(57) [Abstract] [Purpose] To realize a hot air heater with excellent ignition performance. [Configuration] An operation switch 1 for generating an operation start signal,
Electromagnetic pump 2 that supplies liquid fuel to the vaporizer, vaporizer heater 3 that heats the vaporizer, solenoid 4 that opens and closes the vaporized gas ejection port of the vaporizer, and igniter that ignites vaporized gas ejected from the vaporizer. 5 and a hot air fan 6 for discharging the high-temperature gas generated by the combustion of the vaporized gas into the heating indoor space
And a flame detector 7 for detecting the combustion flame
Then, when the operation switch is turned on, the carburetor heater is started to operate, the solenoid is operated to close the vaporized gas injection port of the carburetor, and before the start of the vaporized gas injection of the carburetor by the operation of the solenoid, the electromagnetic is started. Start the pump and igniter, then start the solenoid to start the vaporized gas injection of the carburetor, start the hot air fan, and detect the presence or absence of the combustion flame through the flame detector and the detection result. And the control device 8 for controlling the combustion heating operation based on the above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a warm air heater, which improves ignition performance by improving the ignition sequence and also improves safety.

[0002]

[Prior art]

 The outline of the conventional configuration will be described with reference to FIGS.

When the operation switch 1 is turned on, the control device 8 composed of a microcomputer operates the carburetor heater 3 and operates the solenoid 4 to close the vaporized gas ejection port of the carburetor, and the carburetor temperature is changed. At the same time as the preparation for ignition (ignition command) such as is reached, the solenoid 4 is activated to open the vaporized gas outlet of the carburetor, then the electromagnetic pump 2 is activated, and the igniter 5 is activated. Moreover, the hot air fan 6 was started to operate, and it was determined whether the combustion flame was detected through the flame detector 7.

When it is determined that there is a frame, the igniter 5 is stopped while the operations of the carburetor heater 3, the warm air fan 6 and the electromagnetic pump 2 are continued to shift to the heating operation, When it was determined that there was no frame, the hot air fan 6 was stopped, the solenoid 4 was operated, the vaporized gas outlet of the vaporizer was closed, and the operation of the warm air heater was completely stopped.

[0005]

[Problems to be solved by the device]

 However, in the case of this conventional example, the solenoid 4 is activated at the same time as the ignition command (preparation for ignition) is opened to open the vaporized gas ejection port of the carburetor, and the electromagnetic pump 2 is activated. Since it was light at the beginning and then gradually thickened, it was not ignited in an instant, and sometimes ignited while emitting white smoke in the room. In addition, in the case where it is determined that there is no flame due to an erroneous ignition, white smoke continues to be emitted indoors while the electromagnetic pump 2 is operating. For this reason, it was important to keep the concentration of the vaporized gas to be jetted constant.

[0006]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problems, and includes an operation switch that generates a heating operation start signal, an electromagnetic pump that supplies liquid fuel to the carburetor, and a vaporizer that heats the vaporizer. A heater, a solenoid that opens and closes the vaporized gas outlet of the vaporizer, an igniter that ignites the vaporized gas ejected from the vaporizer, and a hot air fan that expels the high-temperature gas generated by the combustion of the vaporized gas into the heating room space. The flame detector for detecting the combustion flame, and when the operation switch is turned on, the carburetor heater is activated, the solenoid is activated and the vaporized gas injection port of the carburetor is closed, and the solenoid is activated. Before starting the vaporized gas injection of the vaporizer, the electromagnetic pump and the igniter are activated, and then the solenoid is activated to start vaporized gas injection of the vaporizer. Warm air fan operation to start, and constitutes the warm air heater in conjunction with a control device for controlling the combustion heating operation based on the detection result of detecting the presence or absence of combustion frames through the frame detector.

[0007]

[Action]

 With this configuration, when the operation switch is turned on, the control device starts the operation of the carburetor heater, operates the solenoid to close the vaporized gas injection port of the carburetor, and operates the solenoid to operate the carburetor. Before the start of vaporized gas injection, the electromagnetic pump and igniter are activated, and then the solenoid is activated to start vaporized gas injection of the vaporizer, activate the warm air fan, and burn through the flame detector. Whether the frame is present or not is detected, and heating operation is performed based on the detection result, or control is performed to stop the operation altogether.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1, 2 and 3. Note that FIG. 3 is also used in the description of the conventional example, and only the operation sequence is different, and the others are common.

In each figure, 1 is an operation switch for generating a start signal for heating operation, 2 is an electromagnetic pump for supplying liquid fuel to the carburetor, 3 is a carburetor heater for heating the carburetor, and 4 is a carburetor. A solenoid that opens and closes the vaporized gas outlet, 5 is an igniter that ignites the vaporized gas that is ejected from the vaporizer, 6 is a warm air fan that expels the hot gas generated by combustion into the heating room space, and 7 is a combustion flame Is a flame detector, 8 is a controller for controlling the operation of the hot air heater, and 9 is a power supply.

In this configuration, when the operation switch 1 is turned on, the controller 8 starts the operation of the carburetor heater 3 and then the solenoid 4 to close the vaporized gas injection port of the vaporizer. In that state, when the electromagnetic pump 2 is activated to increase the pressure inside the carburetor, the igniter 5 is also activated at the same time, and when this pressure increase and igniter operation are being performed, the solenoid 4 is activated to vaporize. Open the vapor gas injection port of the vessel. That is, the electromagnetic pump 2 and the igniter 5 are activated before the start of vaporized gas injection of the vaporizer by the operation of the solenoid 4. And after a while, the hot air fan 6 is started to operate. Then, it is determined whether or not the combustion flame is detected through the flame detector 7, and when it is determined that the flame is present, the carburetor heater 3, the warm air fan 6 and the electromagnetic pump 2 are continuously operated, and the igniter is continued. Stop 5 and shift to operation for heating. On the other hand, when it is determined that there is no frame, the solenoid 4 is operated to close the vaporized gas injection port of the carburetor, and the warm air fan 6 is stopped to completely stop the operation of the warm air heater.

The configuration of the embodiment is as described above, and before the solenoid 4 is operated to open the vaporization gas injection port of the carburetor, the electromagnetic pump 2 and the igniter 5 are activated to inject the gas to be injected. If the conditions for uniform concentration of the vaporized gas are adjusted, and if the igniter has been started in advance, the solenoid 4 is operated to start the injection, so the reliability of ignition can be greatly improved. It was

[0012]

[Effect of device]

 As described above, according to the present invention, when the vaporized gas is ejected from the vaporizer, the electromagnetic pump and the igniter are activated before that, which increases the certainty of ignition and suppresses the generation of white smoke due to the ignition failure. Is extremely effective for

[Brief description of drawings]

FIG. 1 is a flowchart of an ignition sequence according to an embodiment of the present invention.

FIG. 2 is a timing chart of an ignition operation according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of the configuration of a warm air heater used for explaining the present invention as well as a conventional example.

FIG. 4 is a flowchart of a conventional ignition sequence.

FIG. 5 is a timing chart of an ignition operation of a conventional example.

[Explanation of symbols]

 1 Operation Switch 2 Electromagnetic Pump 3 Vaporizer Heater 4 Solenoid 5 Igniter 6 Warm Air Fan 7 Frame Detector 8 Controller

Claims (1)

[Scope of utility model registration request] 1. An operation switch (1) for generating a heating operation start signal, an electromagnetic pump (2) for supplying liquid fuel to a vaporizer, a vaporizer heater (3) for heating the vaporizer, and a vaporizer. A solenoid (4) for opening and closing the vaporized gas ejection port of
An igniter (5) for igniting vaporized gas ejected from the vaporizer
There was a warm air fan (6) for discharging the high temperature gas generated by the combustion of the vaporized gas into the heating room space, a flame detector (7) for detecting the combustion flame, and the operation switch was turned on. Sometimes the carburetor heater is started to operate, the solenoid is operated to close the vaporized gas injection port of the carburetor, and the electromagnetic pump and the igniter are activated prior to the start of vaporized gas injection of the carburetor by the operation of the solenoid. Start the operation, then start the solenoid to start the vaporized gas injection of the carburetor, start the hot air fan, and detect the presence or absence of the combustion flame through the flame detector and based on the detection result. And a control device (8) for controlling combustion heating operation.