JPH0232973Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to the supply of combustion air to a pressure spray burner.

[Conventional technology]

Conventionally, as a structure for supplying air to the blast pipe of this type of pressure spray burner, there is a method in which the end of the blast pipe is attached almost orthogonally to the side plate of the air guide path connected to the blower, and a swirling air flow is sent to the blast pipe. . With this method, the rotating shaft of the blower (scroller) and the blower pipe are installed in the same direction, making it possible to create a compact burner.

[The problem that the idea aims to solve]

However, when the blast pipe is relatively short in the above structure, the influence of the strong swirling air flow appears even on the stabilizer portion at the tip of the blast pipe, making it difficult to design a stabilizer with a wide range for stable combustion.

In addition, when the air guide path is long and the swirling airflow is weakened, and the airflow flowing into the blast duct flows in a straight line, it becomes easier to design the stabilizer, but for this purpose, a uniform air flow is required in the blast duct. It is. However, since the air pipe and the air guide path are connected in an L-shape, when the airflow whose swirling force is weakened flows from the L-shaped connection to the air pipe, it flows strongly along one side of the air pipe. As a result, it was not possible to obtain a uniform air flow, resulting in poor combustion.

[Means to solve problems]

This idea enables stable combustion with a compact arrangement of parts even when using a relatively short blast pipe, and includes a stabilizer at one end of the blast pipe.
and a spray nozzle and an electrode rod are installed in the blower pipe, the other end of the blower pipe is sealed with a sealing plate having a through hole, and the sealing plate is formed by a side plate of the air guide path connected to the blower, In a pressure spray burner that forms an L-shaped air flow path through a through hole drilled in a sealing plate, a baffle plate is provided from the end of the through hole on the blower side toward the air guide path, and from the blower. The combustion air to be supplied goes around the side of the baffle plate and flows into the through hole.

[Effect]

When the blower is rotated, air passes through the air guide path, reaches the blower pipe, passes around the spray nozzle and through the stabilizer portion, and is blown into a combustion chamber (not shown). On the other hand, fuel pressurized by an electromagnetic pump or the like is blown out in the form of a mist from a spray nozzle, and is ignited by a discharge spark formed at the tip of an electrode rod to begin combustion. Unlike when the blower is installed directly at the end of the blower pipe, the one that supplies air to the blower pipe through the air guide path saves installation space for the blower and can be configured compactly, but the air flow is Since the direction was changed to an L shape, there was a problem that the air flow in the spray nozzle and stabilizer part was not stable.

This idea is based on the fact that a baffle plate is installed from the end of the air guide path on the side of the blower in the through-hole that forms the communication area between the air guide path and the air pipe, so that the air flowing through the air guide path is blocked by the baffle plate. The air was blocked and began to circulate, and air could no longer be blown directly into the air pipes.

For this reason, because the air guide path is short, even when the swirling flow formed by the blower reaches the blower pipe, this swirling flow is weakened by the baffle plate, and even if the blower pipe is short, the swirling flow is strong in the stabilizer part. It no longer occurs. Also, when the air guide path is long and air flows in a straight line, it is stopped by the baffle plate and flows around the side of the baffle plate and flows into the through hole. This prevents the flow of air from being concentrated in the area away from the blower, and the flow velocity of the air inside the blower tube becomes stable, so the amount of air passing through the stabilizer part is almost the same in all parts.

[Explanation of Examples]

1 is a blow pipe of the pressure spray burner, 2 is a stabilizer provided at one end of the blow pipe 1, 3 is a spray nozzle,
4 is an electrode rod, which is a stabilizer 2 of the air pipe 1.
A spray nozzle 3 and an electrode rod 4 are visible in the center. 5 is a sealing plate provided at the other end of the air pipe 1, 6 is a blower, and 7 is an air guide path, and the side plate portion of the air guide path 7 is constructed integrally with the sealing plate 5. Reference numeral 8 denotes a through hole drilled in the sealing plate 5, forming an L-shaped air flow path from the air guide path 7 toward the blower pipe 1. Reference numeral 9 denotes a baffle plate installed from the end of the through hole 8 on the blower 6 side toward the air guide path 7, and the airflow flowing from the air guide path 7 to the air pipe 1 goes around the side of the baffle plate 9. The flow velocity of the air flowing into the through hole 8 and flowing through the blower pipe 1 is made uniform.

〔effect〕

As described above, in this invention, even though the length of the blower pipe 1 is short and the blower pipe 1 and the air guiding path 7 are connected in an L shape, the air flow remains a swirling flow while maintaining a large air volume. Since the airflow that is linearly sent to the stabilizer 2 and passes through the stabilizer 2 is uniform in all parts, the combustion state is extremely stable.

In addition, since stable combustion is possible even if the blower pipe 1 is shortened, the L-shaped air guide path 7 increases the flexibility of the storage part of the blower 6, and the burner can be manufactured compactly, making it more practical. We were able to obtain a high pressure spray burner.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of this device, and Figure 2 is the same A-
It is an A sectional view. 1...Air pipe, 2...Stabilizer, 3...
Spray nozzle, 4... electrode rod, 5... sealing plate, 6...
...Blower, 7...Air guide path, 8...Through hole, 9...Baffle plate.

Claims (1)

[Scope of utility model registration request] A stabilizer 2 is provided at one end of the air pipe 1, a spray nozzle 3 and an electrode rod 4 are installed inside the air pipe 1, and a sealing plate 5 with a through hole 8 is provided at the other end of the air pipe 1.
The sealing plate 5 is formed by the side plate of the air guide path 7 connected to the blower 6, and the sealing plate 5 is
In a pressure spray burner that forms an L-shaped air flow path through a through hole 8, a baffle plate 9 is provided from the end of the through hole 8 on the blower 6 side toward the air guide path 7, and the blower A pressure spray burner characterized in that the combustion air supplied from 6 flows around the side of baffle plate 9 and flows into through hole 8.