JPH0216135Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an exhaust system for a combustor such as a water heater, a bathtub, or the like.

(Prior Art) As a conventional device of this kind, a device is known from Japanese Utility Model Publication No. 53-48350, in which rainwater is discharged from a bowl-shaped headwind prevention member using a pipe projecting outward from the headwind prevention member. The applicant of the present application previously developed a device of this type in which a cylinder, a bowl-shaped headwind prevention member above the cylinder body, and an exhaust hood on the outer periphery are connected to each other with a bracket, and the cylinder body is connected to the circumferential side of the headwind prevention member. A drain port is provided, a water passage portion is provided in the bracket to guide water from the drain port to the outside of the cylindrical body, and a tongue piece extending diagonally downward is provided on the lower edge of the drain port. A gutter portion with a tip wider than the tongue piece is formed in the water part, and the gutter portion faces the lower side of the tongue piece, so that rainwater collects on the headwind prevention member when rainwater enters the exhaust hood. When this happens, it falls down the tongue into the gutter,
We proposed a method that prevents the particles from being trapped and dripping into the cylinder (see Japanese Utility Model Application Publication No. 108538/1983).

(Problems to be solved by the invention) However, in the former case, it is necessary to install a pipe in the headwind prevention member, which is troublesome to install, and there are problems such as the pipe becoming clogged.
When the amount of water overflowing from the drain increases, such as during heavy rain, some of it flows from the side edge of the tongue along the outer circumferential surface of the backwind prevention member, and instead of being captured by the gutter, it flows into the cylinder. There is a risk of dripping, and it is desirable to eliminate this problem.

(Means for Solving the Problems) The present invention aims to provide a simple device that satisfies the above requirements, and consists of a cylinder, a bowl-shaped headwind prevention member above the cylinder, and an exhaust hood on the outer periphery. Tono 3
and a drain port is provided on the circumferential side of the headwind prevention member, and the bracket is provided with a water passage portion that guides water from the drain port to the outside of the cylindrical body, An upper piece bent upward is provided at the upper end of the water passage part of the bracket, and the drain port is formed by a barring part that protrudes outward from the headwind prevention member, and a through hole through which the barring part is inserted is formed in the upper piece. , and the tip of the burring portion projects outward from the upper piece.

(Function) The water accumulated in the headwind prevention member is drained from the drain port. is stopped from water, and the drain port is composed of a barring part that projects outward from the headwind prevention member, and the barring part is inserted through a through hole provided in the upper piece, and furthermore, the tip of the barring part projects outward from the upper piece. Therefore, the drainage water does not enter between the upper end of the upper piece and the outer surface of the headwind prevention member, and is all guided to the water passage portion.

(Example) Next, the present invention will be explained based on the illustrated example. In FIG. 1 and FIG. 2, 1 is a cylinder for discharging exhaust gas from the combustor, 2 is a bowl-shaped headwind prevention member disposed above the cylinder 1, and 3 is a cylinder 1 and a cylinder. an exhaust hood 6 disposed around the outer periphery of the headwind prevention member 2 to prevent draft stoppage and combustion flame turbulence caused by headwinds;
indicates a burring portion that protrudes outward from the backwind prevention member 2 and forms a drain port 6a on the circumferential surface of the backwind prevention member, and includes the cylindrical body 1, the backwind prevention member 2, and the exhaust hood 3. were connected to each other with bracket 4.

To explain this in more detail, the bracket 4
The bracket 4 is provided with a water passage part 7 that guides water from the drain port 6a to the outside of the cylinder body 1, and is bent upward at the upper end of the water passage part 7 to guide the water from the drain port 6a to the outside of the cylindrical body 1. An upper piece 4a that overlaps on the outside is provided. A lower piece 4b that overlaps the outside of the cylinder 1 is provided at the lower end of the bracket 4, and an intermediate piece 4c that overlaps the inner surface of the exhaust hood 3 is provided at the intermediate bent portion. Furthermore, a burring part 6 is inserted into the upper piece 4a, and is provided with a through hole 9 whose tip protrudes from the upper piece 4a. , lower piece 4b and cylinder body 1
The headwind prevention member 2 and the upper piece 4a are connected by rivets or the like, and the burring part 6 protruding outward from the headwind prevention member 2 is inserted into the through hole 9 provided in the upper side piece 4a. , whose tip is connected to the through hole 9
It was pressed outward on the outside and caulked to bind. The water passage part 7 is formed by bending the lower edge of the bracket 4 into a gutter shape, and the lower end is made to project outward from the cylindrical body 1. Further, although not shown, the brackets 4 are provided at a plurality of locations in the circumferential direction, and correspondingly, the burring portions 6 constituting the drainage ports 6a of the headwind prevention member 2 are also provided at a plurality of locations in the circumferential direction.

In this case, when water accumulates in the headwind prevention member 2 and the water level reaches the lower edge of the drain port 6a, the water falls from the drain port 6a and passes through the water passage section 7. It is discharged to the outside of the cylindrical body 1 from its lower end. In this case, the upper piece 4a is provided at the upper end of the water passage part 7, and the burring part 6 constituting the drain port 6a is inserted through the through hole 9 formed in the upper piece 4a, and its tip protrudes from the upper piece 4a. Even if the amount of water overflowing from a drain port increases, such as when there is heavy wind and rain, it is surely captured by a water passage part 7 provided with a burring part 6 and an upper piece 4a, and does not flow into the cylindrical body 1.

(Effect of the invention) As described above, according to the invention, an upper end of the water passage part of the bracket that connects the cylindrical body, the bowl-shaped headwind prevention member above it, and the exhaust hood on the outer periphery is attached. A bent upper piece is provided, and the drain port is constituted by a burring part projecting outward from the headwind prevention member, and a through hole through which the burring part is inserted is provided in the upper piece, and the tip of the burring part is placed on the upper side. Because it protrudes outward from the back wind prevention member, even if a large amount of water accumulates inside the back wind prevention member, the water will not go around the outer circumferential surface of the back wind prevention member and will be reliably guided onto the water passage section, allowing water to flow through. It has the advantage of being able to be discharged from the tube to the outside of the cylindrical body, and having a simple structure and easy manufacture.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view showing an example of the device of the present invention, and FIG. 2 is a perspective view of the main parts with the exhaust hood removed. DESCRIPTION OF SYMBOLS 1... Cylindrical body, 2... Back wind prevention member, 3... Exhaust hood, 4... Bracket, 6... Burring part, 4a... Upper piece, 6a... Drain port, 7... Water passage part.

Claims (1)

[Scope of utility model registration request] The cylindrical body, the bowl-shaped headwind prevention member above it, and the exhaust hood on the outer periphery are connected to each other by a bracket, and a drainage port is provided on the circumferential side of the backwind prevention member, and the drainage port is provided in the bracket. In the bracket, an upper piece is provided at the upper end of the water passage part of the bracket and is bent upward, and the water outlet is connected to the back wind prevention member. A combustor exhaust device comprising an outwardly projecting burring part, a through hole through which the burring part is inserted, provided in the upper piece, and a tip of the burring part protruding outward from the upper part.