JPH0140974Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic spray burner, and more particularly to a hydraulic spray burner that uses preheated combustion air.

Recently, for the purpose of energy saving, it has become common to use waste heat to supply heated air to a burner and use it as combustion air. However, if this hot air is passed through the burner, it will damage equipment around the nozzle, piping, and its sealing material.

In view of the above, the present invention has been devised for the purpose of preventing the above-mentioned damage in a hydraulic spray burner.

That is, the present invention has a burner cone, a nozzle located behind the center of the burner cone to which pressure oil is supplied, and a flame holding plate arranged around the nozzle. In a hydraulic spray burner that is configured to be supplied with air, it is equipped with a pipe that encloses part or all of the wind box in the fuel piping system leading to the nozzle, and the hot air for combustion is heated using waste heat. A blower pipe (including a blower duct) connected from a heat exchanger to the windbox for supplying air into the windbox and outside the pipe surrounding the fuel piping system, and supplying cold air into the pipe surrounding the fuel piping system. and a blower pipe connected from a source of cold air to a pipe surrounding the fuel piping system.

The present invention will be explained below in an easy-to-understand manner using exemplary drawings.

In this invention, the fuel piping system to the nozzle is wrapped in a cold air pipe, and before the air from the blower is heated using waste heat, it is partially divided and supplied into the cold air pipe, which allows the equipment and piping around the nozzle to be It has a structure that protects the sealing material, etc. Note that combustion air, which is hot air whose temperature has been raised using waste heat, is supplied to the combustion opening through the circumference of the cold air pipe.

This will be explained below with reference to illustrative drawings. 1st
The figure shows a hydraulic spray burner (gun type burner, etc.) of the present invention, in which 1 is a nozzle, 2 is a nozzle body, 3 is a drip-proof valve nipple, 4 is a drip-proof valve, 5 is a drip-proof valve adapter, 6, 6 ', 6'' is an oil pipe, 7 is a check valve, 8 is a diff user (flame holding plate), 9 is a diff user fixing hardware, 10 is a gun holder, 11 is an electrode rod, 15 is a burner gun front plate, 16 is a burner gun front plate 17 is a burner cone, 18 is a wind box, 19 is a blast tube, 20 is a wind box front plate, 22 is a burner tile, 30 is a blower, 31 is a combustion exhaust gas, 32 is a chimney, and 33 is a heat exchanger. These are similar to conventional hydraulic spray burners.

However, the present invention is specifically constructed as follows. That is, the fuel piping system to the nozzle, that is, the oil feed pipes 6, 6', 6'', the drip-proof valve adapter 5, the drip-proof valve 4, the drip-proof valve nipple 3, etc., are wrapped in the pipe 21, and the air from the blower 30 is passed through the chimney 32, for example. This preheated hot air is preheated by a heat exchanger 33 that uses waste heat such as combustion exhaust gas to
The combustion air 36 is passed around the pipe 21 to the combustion opening, and the air from the blower is partially divided (for example, the amount of air is 2% or less of the total combustion air) before being heated by a heat exchanger, and this cold air 35 is passed through the pipe. It is different from the conventional method in that the fuel is supplied to the fire opening through the inside of the fuel cell 21. Although the amount of cold air passing through the pipe is small, by designing the flow rate to be sufficiently fast, a rise in temperature within the pipe can be prevented.

According to the above, since a large amount of hot air is used as combustion air, thermal efficiency is good. Moreover, at this time, the tube 21 prevents the hot air from coming into contact with easily damaged equipment and piping around the nozzle and its sealing material, and
Since cold air is passed through 1, it will not damage them. Therefore, it is possible to use hot air using waste heat as combustion air in a hydraulic spray burner.

In addition, in the above, the cold air 35 is supplied from the blowers 30 to 1.
Although the pipe 21 is partially divided, it is not necessarily limited to this, and when the temperature of the hot combustion air 36 is considerably high (for example, 200°C or higher), the pipe 21 is covered with a heat insulating material and the pipe 2 is
It is better to prevent the temperature inside the unit from rising.

[Brief explanation of drawings]

FIG. 1 illustrates an explanatory longitudinal sectional view of the burner of the present invention. 1...Nozzle, 2...Nozzle body, 3...Drip-proof valve nipple, 4...Drip-proof valve, 5...Drip-proof valve adapter, 6, 6', 6''...Oil pipe, 7...Check Valve, 8... Diff user (flame holding plate), 9... Diff user fixing fitting, 10... Gun holder, 11
... Electrode rod, 15 ... Burner gun front plate, 16 ...
Burner gun front plate side plate, 17...burner cone, 1
8... Wind box, 19... Blast tube, 20... Wind box front plate, 22...
Burner tile, 30...Blower, 31...Combustion exhaust gas, 32...Chimney, 33...Heat exchanger, 35...
...Cold air, 36...Hot air for combustion.

Claims (1)

[Claims for Utility Model Registration] (1) Burner cone and the
In a hydraulic spray burner, combustion air is supplied to the nozzle through a wind box to the combustion opening, which is composed of a nozzle supplied with pressure oil and a flame holding plate arranged around the outer periphery of the nozzle. It is equipped with a pipe that encloses part or all of the inside of the wind box of the fuel piping system leading to the fuel piping system, and supplies hot combustion air heated by waste heat to the inside of the wind box and outside the pipe that surrounds the fuel piping system. and a blower pipe connected from a cold air source to the pipe surrounding the fuel piping system for supplying cold air into the pipe surrounding the fuel piping system. A hydraulic spray burner characterized by: (2) The hydraulic spray burner according to claim (1) of the utility model registration, wherein the cold air source is one in which air from a blower is partially divided before being heated by a heat exchanger using waste heat. (3) The hydraulic spray burner according to claim (1) of the utility model registration, wherein the pipe enclosing the fuel piping system is covered with a heat insulating material.