JPH0518596Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a filtering device for burner combustion air.
Used for drying grain and other items.

[Problems to be solved by the prior art and the invention]

In order to combust the fuel supplied to the burner in the burner chamber, a blower fan that sends combustion air is installed outside the burner chamber, and a portion of the air inside the burner chamber is filtered to the intake port of this blower fan. This blower fan is equipped with a filter for sucking air, but this filter is usually installed below the burner chamber (for example, Japanese Patent Application Laid-open No. 134414/1983), so that dry air flows through the burner chamber. When passing through, large pieces of dust tend to sink downward due to the effect of gravity, and tend to accumulate on the filter provided on the lower side. Therefore, the frequency of cleaning and replacement of the filter increases.

[Means to solve the problem]

This invention is an attempt to eliminate the above-mentioned drawbacks, and consists of opening an air intake port 4 in the upper wall 3 of the burner chamber 2 in which the burner 1 that generates hot air is installed, and allowing the air intake port 4 to look through the air intake port 4. A communication chamber 17 is connected so that a part of the air in the burner chamber 2 is sucked by a blower fan 5 and supplied to the burner 1 as combustion air, and a filter 6 is provided at the intake port 4. The structure of the burner combustion air filtration device is as follows.

[Functions and effects of the invention]

The blower fan 5 takes in a part of the air in the burner chamber 2 from the intake port 4 and supplies necessary combustion air to the burner 1 while filtering it through the filter body 6 .

Since the filter body 6 is disposed at the above-mentioned intake port 4 provided on the upper wall 3 of the burner chamber 2, large dust particles from the dry air passing through the burner chamber 2 fall downward and are removed from the filter body 6. is difficult to adhere to, therefore the filter body 6
The frequency of cleaning can be reduced.

〔Example〕

An embodiment of this invention will be described based on the drawings.

A box-shaped drying chamber 7 is provided with a storage tank for storing grains at the top and a drying section at the bottom for receiving and drying the grains from the storage tank. A grain frying device 8 is provided for frying the grains in order to circulate the grains, and a transfer device is provided above the drying chamber 7 for receiving the grains fried by the grain frying device 8 and returning them to the storage tank. A box-shaped burner chamber 2 containing a burner 1 for sending hot air to the drying section is disposed at the front lower side of the drying chamber 7.
Furthermore, on the rear lower side of this drying chamber 7,
An exhaust fan 10 is provided to exhaust the hot air used for drying to the outside of the room 7.

The front part of the burner chamber 2 has a net 11 for filtering the air outside the machine, and the rear part of the burner chamber 2 has a hot air path 13 for sending hot air from the burner 1 to the drying part, Furthermore, this burner chamber 2 upper wall 3
A cylindrical suction guide 14 is fixed to the lower part of the burner chamber 2, and the suction guide 14 has a suction port 4 at the bottom for sucking a part of the air inside the burner chamber 2. A support frame 15 is provided to support the lower part of the filter body 6, and a fitting opening 16 is provided in the upper wall 3 above the support frame 15 to allow the filter body 6 fitted onto the support frame 15 to be freely inserted and removed. will be established.

Moreover, the upper side of this fitting/removal port 16 has a lower surface portion that locks the outer peripheral end of the filter body 6, and is connected to the upper wall 3 via a hinge portion 27 provided at one end of this lower surface portion. A cylindrical ventilation chamber 17 is provided which is pivotally connected to be able to open and close vertically. Moreover, on the upper side of this ventilation chamber 17,
A fan case 28 having a suction port 18 at the bottom and an air blowing port 19 on one side and housing a blowing fan 5 rotated by a motor 20 at the top is connected, and the air blowing port 19 and the upper part of the burner 1 are connected to each other. A cylindrical ventilation body 22 that can be bent to follow the vertical movement of the ventilation fan 5 is provided between the combustion air intake port 21 and an inlet 21 provided in the combustion air intake port 21 for introducing combustion air.

In addition, 23 is a support body that supports the burner 1, and 24 is a support body that supports the burner 1.
29 is a pump that supplies fuel to the burner 1; 29 is a supply pipe thereof; and 26 is a screw that fastens the ventilation chamber 17 to the upper wall 3.

Next, the operation of the above example will be explained.

The blower fan 5 rotated by the motor 20 is
A part of the air in the burner chamber 2 is sucked from the suction port 18 through the ventilation chamber 17 while filtering dust by the filter body 6 from the intake port 4, and then from the ventilation port 19 through the inside of the ventilation body 22 to the introduction port 21. Blow air to. The burner 1 receives air from the inlet 21, and the pump 24
Hot air is generated by burning the fuel supplied by the drying chamber 7, which dries the grains by passing through the drying chamber 7.
is discharged to the outside of the ventilation chamber 7.

When removing the filter body 6 for cleaning or replacement, loosen the screw 26 and rotate the ventilation chamber 17 and fan case 28 upwards together around the hinge part 27. The fitting opening 16 is exposed, and the filter body 6 is bent along with the fitting opening 1.
It can be easily removed from 6.

[Brief explanation of drawings]

The figures show one embodiment of this invention, in which Fig. 1 is a side sectional view, Fig. 2 is a front view, and Fig. 3 is a side view of the dryer. In the figure, numeral 1 indicates a burner, 2 indicates a burner chamber, 3 indicates an upper wall, 4 indicates an intake port, 5 indicates a blower fan, and 6 indicates a filter body.

Claims (1)

[Scope of utility model registration request] Burner chamber 2 containing burner 1 that generates hot air
An intake port 4 is opened in the upper wall 3, and this intake port 4
A communication chamber 17 is connected so that a part of the air in the burner chamber 2 is sucked by the blower fan 5 and supplied to the burner 1 as combustion air,
A filtering device for burner combustion air is provided with a filter 6 at the intake port 4.