JPS582997Y2 - On-sui boiler - Google Patents

Description

[Detailed explanation of the invention] This invention relates to the improvement of hot water boilers. In other words, in a boiler equipped with this type of silencer, the boiler itself vibrates during the early stages of combustion and when exposed to a head wind. The cause of this state of combustion is thought to be that an abnormally high pressure is suddenly applied inside the combustion chamber, and the exhaust cannot be exhausted only through the exhaust port.

Therefore, it would be a good idea to temporarily discharge this abnormally high pressure from a location other than the exhaust port without interfering with normal combustion.

This invention focuses on this point and attempts to provide a hot water boiler that eliminates the above-mentioned conventional drawbacks.

Next, an embodiment of this invention shown in the drawings will be explained.
Reference numeral 1 denotes a cylindrical boiler body, which has a heat exchanger 2 around its outer periphery, and a donut-shaped support plate 3 fixed to the outside of the inner periphery of the heat exchanger 2. Shodai 5...
A plurality of washers 6- matching with the regular size 5 are interposed above the regular size 5, and a stepped portion is formed so that the outer peripheral edge 7 is located at a higher position than the upper end of the heat exchanger 2. An abnormal pressure discharge part 8 is formed between the upper end of the heat exchanger 2 and the inner peripheral edge 9 is raised to form an exhaust port 10, and a plurality of through holes 11 are formed near the step of the outer peripheral edge 7. ... is superimposed on the washer 6 ... to form a gap 13 between them and the support plate 3, and are fixed together with set screws 14 to form a combustion chamber 15. A silencer 18 is attached to the lower circumference of the exhaust port 10 of the upper surface plate 12, and the silencer 18 is constructed by surrounding the entire inner and outer circumference of a sound absorbing material 16 such as tubular glass wool with a punching body 17, and the upper part of the silencer 18 is excluded. A meandering path 19 is formed at a constant interval on the entire outside, and a concave baffle plate 20 is installed to prevent the exhaust heat from reaching the exhaust port 10 immediately. It goes without saying that the outer top plate 12 may have a large number of holes.
1 is a glass wool or other heat-resistant, breathable and heat-retaining reinforcement member provided outside the abnormal pressure discharge part 8, and is interposed between the removable top cover 22 and the top plate 12; Further, when the impact reinforcement member 21 is interposed between the outer frame 23 and the boiler main body 1, the heat retention effect of the heat exchanger 2 can be further improved. 24 is a well-known gun type burner and the combustion chamber 15 is
25 is the base plate, which looks almost at right angles downward.
Reference numeral 26 denotes a storage chamber equipped with an operating mechanism (not shown), etc., and 27 refers to an exhaust pipe that is removably attached to the exhaust port 10 and extends from the exhaust port 10, passing through the upper lid 22 and opening the inside of the upper lid 22. A ventilation receiving plate 29 is provided so as to receive the pressure or part of the exhaust heat discharged from the circumferential hole 28.

This invention is constructed as described above, and the operation will be explained next. By performing a well-known combustion operation, the gun type burner 24 burns in the combustion chamber 15 and heats the heat exchanger 2, while the exhaust heat is rises along the baffle plate 20, hits the top plate 12, turns around, and passes through the meandering path 19 to the silencer 1.
8, and is exhausted from the exhaust port 10 and the exhaust pipe 27, which is the same as the conventional operation.However, at this early stage of combustion, the combustion chamber 15 is still cooling, and the draft effect is poor, and the exhaust gas is discharged from the exhaust port 10. The exhaust heat cannot be completely discharged, and therefore an abnormally high pressure is loaded inside the combustion chamber 15. At this time, part of the pressure of the exhaust heat flows through the gap 13 between the top plate 12 and the support plate 3, causing the abnormality. The high-pressure discharge part 8 discharges forcefully to the buffer member 21, and the buffer member 21 absorbs this with its buffering and sound-absorbing effects, weakening a part of the pressure and muffling the noise, while the exhaust pipe 27
The so-called vibration combustion that enters in a meandering direction and is discharged to the outside from the inner circumferential hole 28 of the upper cover 22, prevents abnormal pressure from being loaded in the combustion chamber 15 and generates vibrations in the boiler body 1. is prevented and stable combustion occurs from the initial stage of combustion.

In addition, when a headwind is received from the exhaust stack 27, the wind tries to flow down from the upper part to the lower part of the combustion chamber 15 through the meandering path 19 of the silencer 18, but the force is temporarily loosened by the baffle plate 20 and it ascends the meandering path 19. However, due to the gap 13 between the upper surface plate 12 and the support plate 3 of the combustion chamber 15 and the abnormal pressure discharge part 8, it is forcefully discharged to the buffer member 21 and enters the direction of the exhaust pipe 27 while being buffered, and enters the inner peripheral hole of the upper cover 22. Since it is discharged to the outside from 28, it is prevented from having an adverse effect on combustion.

As described above (this invention has an exhaust port 10 in the upper part of the combustion chamber 15 with the heat exchanger 2 formed around the outer periphery, a silencer 18 for absorbing combustion noise is provided around the lower part of the exhaust port 10, and In the gun type burner 24 shown in 15, a distance is maintained between the outer peripheral edge T of the top plate 12 constituting the combustion chamber 15 and the upper end of the heat exchanger 2 at the upper part of the combustion chamber 15. An abnormal pressure discharge part 8 is formed, and a heat-resistant and breathable buffer member 21 such as glass wool is provided on the outside of the abnormal pressure discharge part 8, and the abnormal pressure is discharged from the upper lid 22 penetrated by an exhaust pipe 27. It is discharged in a meandering manner from the inner circumferential hole 28, and the abnormal pressure applied to the combustion chamber at the beginning of combustion and during headwinds is discharged, thereby eliminating the vibrational combustion that causes the boiler body to vibrate. Stable combustion and no fluctuation in combustion output even during initial combustion and headwinds.
In addition, by making the abnormal pressure meander and providing a buffer member, the combustion sound can be further muffled, which is more effective, and this also prevents the abnormal pressure from being discharged to the outside with hot air. It is safe with no risk of fire or burns, and is inexpensive since the abnormal pressure discharge part is formed during the assembly process of the boiler body and uses the upper part that constitutes the combustion chamber, so there is no need to install special parts. Also, the buffer member is heat resistant, insulates the exhaust heat, and does not cause burnout or discoloration of the top cover or outer frame.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a hot water boiler with this invention, Figure 2
3 is a sectional view taken along the line A--A in FIG. 2, and FIG. 4 is a plan view of the top plate. In the drawing, 1 is a boiler body, 2 is a heat exchanger, 8 is an abnormal pressure discharge part, 15 is a combustion chamber, 1B is a silencer, 21 is a buffer member, and 24 is a gun type burner.

Claims (1)

[Scope of utility model registration request] A combustion chamber with a heat exchanger formed around its outer periphery has an exhaust port at the top, a silencer is installed around the bottom of the exhaust port to absorb combustion noise, and a gun-type burner is visible in the combustion chamber. At the upper part of the combustion chamber, a distance is maintained between the outer peripheral edge of the top plate constituting the combustion chamber and the upper end of the heat exchanger to form an abnormal pressure discharge part, and glass wool or the like is provided outside the abnormal pressure discharge part. This hot water boiler is equipped with a heat-resistant and breathable buffer member, and is configured so that abnormal pressure is discharged in a meandering manner from an inner peripheral hole of an upper cover penetrated by an exhaust pipe.