JPH0133950Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a combustion device, in other words, the suction port of a combustion fan that supplies combustion air to a combustion section is opposed to a through hole in a frame body having a filter lid, and A combustion device that sucks indoor air as the combustion air is disclosed in, for example, Japanese Utility Model Application Publication No. 57-46240 and is well known.

However, with this known method, the only means to prevent dust from entering the combustion fan and the combustion section is a wire mesh filter lid, so reliable removal is not possible, and the combustion fan is often closed. Abnormal combustion occurs due to clogging or dust, and the suction port is visible from the outside of the frame, and the combustion fan's driving sound is emitted from here, which causes noise problems and aesthetic problems. It was hot.

This idea focuses on this point and eliminates the above drawbacks,
The purpose of the present invention is to provide a combustion device which can reliably prevent dust from entering the combustion air, provide stable driving and combustion over a long period of time, and is quiet and aesthetically pleasing.

Next, a preferred embodiment of the combustion apparatus according to the invention shown in the drawings will be described.

Reference numeral 1 denotes a pot-shaped vaporization type combustion section, which has a burner section 2 at the top, a flame port 3 formed on the side, and a combustion chamber 5 equipped with a heating heater 4 for heating to 200 to 240 degrees Celsius at the outside of the bottom. It is provided at the bottom of the.

6 is a turbo fan configured by connecting fan blades 8 housed in a fan casing 7 and a fan motor 9 outside the fan casing 7 via a support shaft 10, and supplies combustion air to the combustion section 1. In the combustion fan, a suction port 11 is formed in the center of a fan casing 7, facing a through hole 13 bored at a suitable position in a frame 12, and a filter lid 14 detachably attached to the through hole 13 is inserted into the frame. Air is sucked in from outside the body 12.

Reference numeral 15 denotes a baffle plate installed between the suction port 11 and the filter lid 14 so as to block the suction port 11 from being seen from the outside of the frame 12;
1 side and the filter lid 14 side are communicated to form a chevron-shaped air flow passage 16 that extends from the outside of the frame body 12 toward the suction port 11.

17 is a filter lid 14 attached to the frame 12
This is a donut-shaped noise-absorbing member formed from a breathable soft material such as ester polyurethane foam, which connects the air intake port 11 of the combustion fan 6 to the suction port 11 of the combustion fan 6. It acts as a sound absorber to prevent it from being emitted.

Reference numeral 18 denotes an air blowing passage that communicates the combustion fan 6 and the combustion section 1, and a tapered nozzle section 19 is formed at the tip so as to look into the combustion section 1, and a part in the middle is divided into two or bypassed at an appropriate area ratio. One branch 20 has a valve mechanism 21 such as an electromagnetic valve that opens when energized and closes when energization is stopped, and the other branch 22 has a branch pipe 23 communicating and extending from a flat part with no unevenness in the circular diameter, and has a nozzle part 19. The branches 20 and 22 are merged in front of the branch.

Further, the valve mechanism 21 is connected to a sensor 24 such as a room thermostat that detects the temperature in the room, and is controlled to open and close depending on the set temperature of the sensor 24.

The branch pipe 23 is opened into a metering oil level gauge 25 communicating with a fuel tank (not shown), and the air pressure in the air passage 18 is applied as static pressure onto the fuel.

Reference numeral 26 denotes a fuel injection nozzle that communicates with the metering oil level gauge 25 and has a solenoid valve 27 interposed in the middle.The tip of the nozzle is directed toward the combustion section 1, and the fuel injection nozzle is in communication with the metering oil level gauge 25. of fuel in the form of mist or granules.

The metering oil level gauge 25 includes a valve body 28 that discharges internal pressure when the oil level rises abnormally, a relief port 29 that adjusts pressure fluctuations when the thermal power is switched from large to small, and a metering holding valve 30. In addition, the oil level is located at the same level as or slightly below the fuel injection nozzle 26.

31 is the igniter, 32 is the flame sensor. Next, the operation of this embodiment will be explained. By performing a combustion operation that is well-known today, fuel is supplied to the heated combustion section 1, where it is instantaneously vaporized, and is further heated within the combustion section 1 together with combustion air supplied by the combustion fan 6. Mix and burner part 2
It burns well. Then, the combustion air supplied to the combustion section 1 is driven by the combustion fan 6, which sucks the air outside the frame 12, passes through the filter lid 14, removes some of the dust mixed in, and then passes through the suction port. 11, the air always collides with the baffle plate 15 installed between the suction port 11 and the filter lid 14, and flows along the baffle plate 15 through the chevron-shaped air flow passage 16. The dust is shaken off between the filter lid 14 and the baffle plate 15, and only air without dust mixed in is sucked through the suction port 11 and supplied to the combustion section 1, so that the combustion fan 6 removes the dust. This ensures that clogging or abnormal combustion due to garbage is prevented.
Good combustion can always be obtained over a long period of time. Furthermore, since the suction port 11 is hidden by the baffle plate 15 and cannot be seen from the outside of the frame 12, the driving noise of the combustion fan 6 emitted from the suction port 11 is transmitted through the baffle plate 15.
Since the air is not directly emitted to the outside of the frame 12 because it is blocked by the air inlet 5, it is extremely quiet without worrying about noise, and since the suction port 11 is not visible from the outside, it is also extremely aesthetically pleasing.

In short, this invention makes the suction port 11 of the combustion fan 6 provided in the frame body 12 face the through hole 13 formed in a proper position of the frame body 12 and fitted with the filter lid 14, and the filter is inserted from the outside of the frame body 12. In the case where combustion air is sucked through the lid 14 and supplied to the combustion section 1, a baffle plate 25 is provided upright between the suction port 11 and the filter lid 14, and the suction air is sucked in from the outside of the frame 12. Since a chevron-shaped airflow passage 16 is formed toward the opening 11, dirt mixed in the sucked air that cannot be removed by the filter lid is removed by the baffle plate that always collides with the baffle plate and the baffle plate standing upright. The chevron-shaped air flow passage formed by this method ensures that dust is shaken off between the filter lid and the baffle plate, and the dust is accurately removed.The supply of combustion air containing dust can cause combustion fans to malfunction or malfunction. There are no problems such as combustion, and good driving and combustion are always performed over a long period of time.

In addition, since the suction port is hidden from the outside by the baffle plate, the driving sound of the combustion fan is prevented from being emitted directly from the suction port to the outside. Since it is invisible, it is extremely aesthetically pleasing.

[Brief explanation of the drawing]

FIG. 1 is a simplified cross-sectional view showing an embodiment of this inventive combustion device, and FIG. 2 is an enlarged cross-sectional view of the same essential parts. DESCRIPTION OF SYMBOLS 1... Combustion part, 6... Combustion fan, 11... Suction port, 12... Frame body, 13... Through hole, 14... Filter lid, 15... Baffle plate, 16... Air flow path.

Claims (1)

[Scope of utility model registration request] The suction port 11 of the combustion fan 6 provided in the frame body 12 is made to face the through hole 13 formed in a proper position of the frame body 12 and fitted with the filter lid 14, and the air inlet port 11 of the combustion fan 6 provided in the frame body 12 is made to face the through hole 13 formed in the appropriate position of the frame body 12 and equipped with the filter lid 14. In the device that sucks combustion air and supplies it to the combustion section 1, a baffle plate 15 is provided between the suction port 11 and the filter lid 14.
A combustion device characterized in that a mountain-shaped air flow passage 16 is formed by vertically erecting a frame body 12 toward the suction port 11 from outside the frame body 12.