JPS5938526A - Hood attached to top end of exhaust cylinder - Google Patents

Abstract

PURPOSE:To make it possible to increase the gas discharge speed of the exhaust cylinder to a value close to the desired maximum value and to utilize air by sucking it without fail irrespective of the flow direction of the air by a method wherein hood units attached to the top end of the exhaust cylinder are connected together by reducing the diameters of the upper openings of the hood units in sequence, to thereby guide exhaust gasses outside the cylinder. CONSTITUTION:The diameters of the lower circular openings 11, 21, 31 and 41 of the hood units 10, 20, 30 and 40 are equal to one another but the diameters of the upper circular openings 12, 22, 32 and 42 thereof are so determined that the diameter of the upper circular opening of the lowest hood unit 10 is such as to enable the opening to attach closely to the top end 2 of the exhaust cylinder, the diameter of the circular upper opening of the hood unit 20 is made smaller by 10% than that of the circular upper opening of the hood unit 10, the diameter of the circular upper opening of the hood unit 30 is smaller by 10% than that of the circular upper opening of the hood unit 20 and the diameter of the circular upper opening of the hood unit 40 is made smaller by 10% than that of the circular upper opening of the hood unit 30. Further, the hood units 10, 20 and 30 are attached with bonding partition walls 19, 29 and 39. These partition walls 19, 29 and 39 are arranged at equal intervals on the outer side surface of the hood unit 10, 20 and 30 so as to extend from points 16a, 16b, 16c and 16d at which the circumferential line 16, 26 and 36 of the upper opening of the hood unit 10, 20 and 30 is divided into four equal sections.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shade that can be attached to the tip of an exhaust pipe such as a chimney.

Traditionally, the shade attached to the exhaust stack is one in which support pillars are erected around the exhaust stack and a square or archetype canopy is attached on top of it, as shown in Figures 1 to 4, or a T-shaped shade. type, if
There are many models in which a shade such as a mold is made and attached to the tip of the exhaust pipe, and the exhaust power is significantly reduced because the exhaust is obstructed by a sub-plate or horizontal pipe part installed for the purpose of preventing rainwater. are being reduced. Therefore, if the exhaust stack is a chimney, the combustion inside the combustion equipment will be insufficient and CO and SO2 will be contained in the exhaust gas. The amount of harmful substances emitted from non-conducting plants has also increased, causing pollution. In addition, in strong winds, the suction force is weak, which can cause air to flow back into the cylinder, and in the case of a chimney, this can cause abnormal confusion in the combustion process. Furthermore, despite careful consideration, rainwater often infiltrates, leading to corrosion of combustion equipment and explosions of accumulated scum.

This invention was made in view of the drawbacks of oblique tops, and embodiments of this invention will be described below with reference to the fifth to eighth drawings. The hat A of this invention has a unit flute body of 10 degrees, 20 degrees, 30 degrees,
40 are connected, and the shade A is connected to the tip 2 of the exhaust pipe 1.
It is also used by fitting it in.

The shade A provided for the metal phase exhaust pipe is preferably made of a stainless steel plate. Each unit flute body 10.20.

As shown in FIG. 7, 30 and 40 are unit flute bodies in the shape of a right circular truncated cone made of stainless steel plates, and depending on the order in which they are connected, they are divided into unit flute bodies 10, unit flute bodies 20, and unit touch bodies 30.
, a unit flute body 40. Lower mouth of unit flute body 11, 21,
The diameter of 31.41 is each unit flute body 10.20°30.40
Both have the same diameter, but for the upper opening 12°22.32.
The diameter of 42 is such that the lowest unit flute body 10 is in close contact with the exhaust pipe tip 2, the diameter of the unit flute body 20 is 10% smaller than the diameter of the unit flute body 10, and the diameter of the unit flute body 30 is 10% smaller than the diameter of the unit flute body 10. is 10% smaller than the diameter of the unit flute body 20, and similarly, the diameter of the unit flute body 40 is 10% smaller than the diameter of the unit flute body 30. 12 for the upper opening of the lower unit Kasagi 10, 20.30. 22.

32 is slightly bent upward parallel to the perpendicular line of the lower unit caps 10, 20, and 30. The length of the bent portions 17, 27, and 37 is approximately 0.0 mm of the diameter of the exhaust pipe tip.
The length should be 5% to 075%. Also, the bottom bottom surface -13゜2
3.33 The angles 15.25 and 35.45 with the 43 generating lines 14, 24, and 34.44 are approximately 65° to 85°.

The unit flute body 10, the unit flute body 20, and the unit flute body 30 have points 16a, 161), 16c, 16d, 26a, 26 which are obtained by dividing the upper opening circumference line 16, 26.36 into four equal parts.
b, 26c.

26d, 36a, 36b, 36c, 36d at equal intervals toward the lower circumferential line 18°28.38, and from the upper opening circumferential line 16, 26.36 to the lower circumferential line 18,
28. Joining partition wall 19 up to about three-quarters of the side surface between 28 and 38
, 29, 39° are joined perpendicularly to the side cutting line l. Furthermore, four support plates 5 are joined to the unit flute body 10 at the lower part 4 and back side of the unit flute body 10, positioned in the same direction as the joining partition walls 19, 29, and 39. Unit flute body 10, 20, 30.4
When connected, the unit tent bodies 10, 20, 30, and 40 are successively stacked on top of each other so that the joining partition walls 19t, 29, and 39 joined to each unit flute body are in a straight line to form an integrated shade A.

The tip 2 of the exhaust pipe is fitted into the upper opening 12 of the unit flute body 10 attached to the shade, and the support plate 5 of the unit touch body 10 is tightened using the mounting bracket 3 to secure it to the exhaust pipe 1. Junction distance 919,2
The method of joining each unit flute body 10°20.30.40 according to 9.39 may be by riveting, welding, etc.

Note that the material of the shade A can be changed depending on the size of the exhaust pipe, the material, the structure, etc., and the shape can also be made into an original shape or a square shape.

The diameter of the waste discharge port of the exhaust stack is determined so that the discharge speed can be changed to a specified value when the amount of exhaust gas is at its maximum.However, during normal use, the exhaust volume is far below this limit, and the discharge speed of the exhaust stack is determined. is not going as planned. In the present invention, the diameter of the unit whistle body of the hat attached to the tip of the exhaust pipe is sequentially increased to 10.
By reducing the number by % and connecting them, the exhaust gas is guided and the discharge speed of the exhaust pipe is increased close to the desired maximum value, thereby achieving the effect of eliminating the above-mentioned drawbacks.

In addition, the exhaust gas discharged from the exhaust pipe must not have a canopy such as a hat or a horizontal cylinder at the discharge port, and must be installed on the crown cylinder.
Since there is an inlet with a 5° to 85° tangential line and an inclination angle formed by the bottom surface, horizontal wind that always blows toward the exhaust pipe and wind from below are always sucked in between the unit isobodies. ,
It acts as an upward airflow and significantly strengthens the exhaust force discharged from the exhaust gas. Even if the direction of the wind changes, the wind can be used in each direction.As the four jointed bulkheads are partitioned at equal intervals, the system ensures that wind from all directions is sucked in and used without creating turbulence. Can be done. Further, the bent portion provided at the periphery of the upper opening of the lower unit cap has the function of imparting an upward direction to the airflow blown up from the exhaust pipe and promoting exhaust force. Since the suction action between the unit isobodies has its own suction upward force, it is preferable to have as many Kasagi as Q4. In the case of a chimney, when the exhaust power is strong, the amount of air supplied to the combustion equipment is sufficient and complete combustion occurs, which not only reduces the amount of pollutants being excreted, but also allows the generated substances to be quickly carried to high altitudes and dispersed. It is also preferable in terms of environmental hygiene. Also, regarding the intrusion of rainwater, there is almost no possibility that rainwater will infiltrate into the exhaust stack. Even if the rainwater flows in the same direction, it first flows along the back side of the uppermost unit cylinder and is discharged to the outside from the lower end of the unit cylinder. Even if a small amount enters the next unit cylinder, it will be eliminated along the same route, so it will hardly ever end up in the exhaust stack opening. Since rainwater does not enter the exhaust stack, corrosion of combustion equipment, heat-resistant equipment, etc. due to rainwater inflow does not occur.

Furthermore, since the exhaust force is increased, the length of the exhaust pipe can be made shorter than that of conventional exhaust pipes.

[Brief explanation of the drawing]

Figures 1 to 4: A front view showing an example of a conventionally used hat; Figure 5: A partially cutaway perspective view of a hat showing an embodiment of the present invention; Figure 6; viewed from n-n' in Figure 5; Fig. 7 is an exploded partial cross-sectional side view of the hat shown in Fig. 5 Fig. 8 is a partial side view of the exhaust pipe equipped with the shade shown in Fig. 5 1...Exhaust pipe 2...Exhaust pipe tip 3 ... Several metal fittings 4 ... Lower part of unit cylinder 1.0 5 - Support plate
10, 20, 30.40...Unit box body 11.21,
31.41 Lower port of unit cylinder 12.22, 32.
42 Inside the upper opening of the unit cylinder 13.23.33.
43 Lower bottom surface of unit cylinder 14.24, 34.44
10 wires of unit cylinder 15.25, 35.45
Angle 16.26.36 formed by the lower base and the 1U' line
Upper opening circumference line of unit cylinder 17.27.37
Bent part 18.28.38 Lower circumference line 19 of unit cylinder
．． 29.39 Joint partition wall patent applicant Miki Equipment Inspection Office Agent Patent attorney Takeo Gomi Figure 1 Figure 2 Figure 5 Figure 7 Figure 6

Claims (1)

[Scope of Claims] (11) A right truncated conical shape having a plurality of joint partition walls protruding from a conical surface parallel to the generatrix and at equal intervals, and having an opening at the top, except for the unit sub-body at the top. For the tip of an exhaust pipe, a plurality of sub-units are stacked one on top of the other with the joining partitions in between, a constant interval is formed between adjacent unit parts, and each of the joining partitions forms a straight line. (2) The exhaust pipe tip cap according to claim 1, wherein the diameter of the upper opening of each unit sub-body is sequentially decreased by 10% from the lower unit box to the upper unit sub-body. 3) The angle between the lower base of each unit subbody and the generatrix is approximately 6
A shade for the tip of an exhaust pipe according to claim 1 or 2, wherein the angle is set at 5° to 85°. (4) The exhaust pipe tip cap according to claim 3, wherein the periphery of the upper opening of the lower unit box body is bent upward in parallel to the perpendicular line of the subunit body.