JP4196547B2 - Silent structure of oil water heater - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an improvement in a sound deadening structure in an oil water heater.
[0002]
[Prior art]
Water heaters using a pressure spray burner that sprays liquid fuel such as kerosene from a nozzle and ignites and burns atomized fuel are widely used, and silencers are used to reduce the relatively loud noise of the burner. .
[0003]
As a silencer structure, a soft sound-absorbing material such as rock wool or ceramic wool absorbs sound energy, and a large number of large and small through holes are formed in the ducts that make up the exhaust passage, so that the sound and sound that passes through A resonance method that causes interference is mainly known.
[0004]
In particular, the sound-absorbing structure using a sound absorbing material such as rock wool is very good in workability and sound absorbing performance because the sound absorbing material is a soft fiber with a large amount of fine continuous pores, and is widely used in general building materials, etc. Therefore, it is relatively easy to obtain and has a feature that can be made inexpensive, and a silencing structure using a sound absorbing material is most often used.
[0005]
[Problems to be solved by the invention]
By the way, recently, due to an increase in hot water usage due to changes in the living environment and a decrease in installation space due to housing conditions that tend to be crowded, hot water heaters have become more powerful and space-saving. The sound energy also increased in proportion to the output.
[0006]
In order to cope with such increasing sound energy, it is necessary to increase the sound absorption area, but if the distance of the exhaust path is increased or the sound absorbing material to be installed is increased, the silencer must be enlarged, It is very difficult to realize in a limited space of a miniaturized water heater.
[0007]
As a countermeasure for this, the sound absorbing effect is achieved by combining the sound absorbing material so that the interior of the silencer is composed of a plurality of rooms divided into upper and lower parts and lengthening the exhaust path even in a limited space. There are things aimed at improvement. However, in this structure, there are variations in the size of each sound absorbing material, and the strength of the sound absorbing material alone is low, so a reinforcing member is required, and the number of parts and assembly processes increase, resulting in poor productivity. There was a drawback.
[0008]
[Means for Solving the Problems]
The present invention is intended to solve the above problems, a combustion chamber 2 arranged inside the can body 1, and the exhaust chamber 3 adjacent to the can body 1, combustion in the combustion chamber 2 is connected to the exhaust chamber 3 In the oil water heater provided with a silencer 6 having an exhaust passage 4 through which gas passes, a sound absorbing material 5 disposed in the silencer 6 has a plurality of sound absorbing materials 5a, 5b,. Are stacked in the silencer 6, and the sound absorbing materials 5 b, 5 c... In the silencer 6 are provided with long holes 4 b and 4 c or through holes 4 d and 4 e. The elongated holes 4b, 4c or the through holes 4d, 4e,... Are provided from the combustion gas inlet 7 on the combustion chamber 2 side when the plurality of sound absorbing materials 5a, 5b,. communicating the exhaust port 8, thereby forming the exhaust passage 4, the sound absorbing material filled superimposed on the muffler 6 5 , Positioned at both ends of the overlay, and sound absorbing material 5a of the long hole 4b · 4c or nonporous having no through hole 4d · 4e · · ·, are arranged on the inner side adjacent to the sound absorbing material 5a of the nonporous A plurality of sound absorbing materials 5b and 5c having different arrangement positions of the long holes 4b and 4c , and a plurality of sound absorbing materials 5b and 5c provided with the long holes 4b and 4c. the through hole of the sound absorbing material 5d · 5e · · · having the same shape with a plurality number of through holes 4d · 4e · · · that can communicate, formed by the superimposed noise absorbing member 5d · 5e · · · the exhaust passage 4 which is constituted by 4d · 4e ···, in which an opening is provided which constitutes an inlet port 7 of the combustion gas and the exhaust port 8 of the exhaust chamber 3.
[0009]
Further, a flat plate 10 is provided in which a cylindrical body 9 having a large number of small holes is erected, and the sound absorbing material 5b, 5c,... Has long holes 4b, 4c and through holes 4d, 4e,. If the sound absorbing material 5 is overlapped with the flat plate 10 while being inserted, the sound absorbing material 5 is not separated and the positions of the long holes 4b, 4c and the through holes 4d, 4e,. It was made.
[0010]
In addition, the plurality of sound absorbing materials 5a, 5b,... Are each provided with a notch portion 11, and the notch portion 11 is continuous on the side surface of the sound absorbing material 5 formed by overlapping the sound absorbing materials 5a, 5b,. If the groove is formed, it is immediately understood that the internal through hole 4a and the long holes 4b and 4c are not properly communicated when the notch 11 is not continuously formed. It became possible to eliminate the mistake of the pair.
[0011]
[Action]
In the present invention, when the sound absorbing material 5 is configured by stacking a plurality of sound absorbing materials 5a, 5b,..., The long holes 4b, 4c and the through holes 4d, 4e,. The exhaust passage 4 is formed, and the length and shape of the exhaust passage 4 can be freely changed by changing the number, size and arrangement of the long holes 4b and 4c and the through holes 4d and 4e at this time. It can be changed.
[0012]
For this reason, since the exhaust passage 4 can be formed long without changing the size of the silencer 6, the sound that cannot be absorbed in the past while the combustion sound passes through the exhaust passage 4 is absorbed. It was possible to do.
[0013]
Further, the sound absorbing materials 5a, 5b,... Can have the same size and shape, and if the sound absorbing materials 5a, 5b,. A sufficient strength could be obtained even with a combination of only 5.
[0014]
Further, a flat plate 10 provided with a cylindrical body 9 having a large number of small holes is arranged at one end of the sound absorbing material 5, and the sound absorbing materials 5 b, 5 c... Are long holes 4 b and 4 c and through holes 4 d and 4 e. Are stacked while being inserted through the cylindrical body 9, the sound absorbing material 5 is held by the cylindrical body 9 without being separated and can be easily assembled.
[0015]
Further, the sound absorbing materials 5a, 5b,... Are provided with notches 11, and the sound absorbing materials 5a, 5b,... Are stacked so that the notches 11 are continuously formed on the side surfaces of the sound absorbing material 5. Accordingly, the long holes 4b, 4c and the through holes 4d, 4e,... Can be properly communicated with each other.
[0016]
【Example】
The present invention will be described with reference to an embodiment of a hot water storage type oil water heater shown in the figure. Reference numeral 12 denotes an outer body of the oil water heater, 1 denotes a can body that forms a water chamber having a vertically closed structure installed in the outer body 12; Is a combustion chamber disposed inside the can body 1, and 13 is a burner that is looked into the combustion chamber 2. The flame of the burner 13 is blown into the combustion chamber 2.
[0017]
3 is an exhaust chamber provided adjacent to the upper surface plate 1 a of the can body 1, 14 is a flue pipe connected to the combustion chamber 2 and the upper surface plate 1 a of the can body 1, and 4 is an exhaust path connected to the exhaust chamber 3. The combustion gas in the combustion chamber 3 is sent to the exhaust chamber 2 through the flue pipe 14 and exhausted from the exhaust passage 4 to the outside.
[0018]
Reference numeral 15 denotes a water supply pipe that opens to the lower side wall of the can body 1, and 16 denotes a tapping pipe that opens to the upper side wall of the can body 1. Water is supplied from the water supply pipe 15 into the can body 1, and is converted into hot water by the heat of the burner 13. The hot water is discharged from the tap pipe 16.
[0019]
5 is a sound-absorbing material also used for heat insulation composed of fibers having a large amount of fine continuous pores such as rock wool, glass wool, and ceramic wool, and 6 is arranged so as to surround the exhaust passage 4 with the sound-absorbing material 5 housed inside. The sound energy sent from the combustion chamber 2 to the exhaust chamber 3 along the combustion gas advances to the exhaust passage 4 and is absorbed by the sound absorbing material 5 while passing through the exhaust passage 4. Being exhausted while attenuating the sound.
[0020]
By the way, recent oil water heaters are increasing in output and small in size, and it is necessary to take measures against sound energy that increases in proportion to the increase in output. Since the space inside 12 is limited, it is necessary to devise a way to make the exhaust passage 4 as long as possible without enlarging the silencer 6.
[0021]
FIG. 5 showing a conventional example is a combination of a large number of sound absorbing materials 5 so that the distance of the exhaust path 4 becomes long. The exhaust path 4 is composed of a plurality of rooms divided into upper and lower parts, 12 extends to the side of the side wall 12 and extends toward the upper chamber toward the side of the exhaust chamber 3, and further extends from the upper side of the chamber toward the side of the side wall of the outer body 12 toward the exhaust port. The sound absorption area can be increased without changing the length.
[0022]
However, in the structure in which a large number of sound absorbing materials 5 are combined to form a space inside as described above, there is a variation in the size of each sound absorbing material 5, and sufficient strength can be obtained only by combining soft sound absorbing materials 5. Since it is difficult to obtain, a reinforcing member composed of a thin metal plate or the like has to be disposed at the joint portion of the sound absorbing material 5. For this reason, the increase in the number of parts and the assembling process are troublesome, and there is a disadvantage that productivity is poor.
[0023]
The present invention solves the above-described problem, and the sound absorbing material 5 is formed by stacking a plurality of sound absorbing materials 5a, 5b,... 4b and 4c are elongated holes provided in the sound absorbing materials 5b and 5c, 4d, 4e,... Are through holes provided in the sound absorbing materials 5d, 5e, etc., and the sound absorbing material 5 has sound absorbing materials 5a disposed at both ends, and the sound absorbing materials 5b, 5c are respectively disposed inside the sound absorbing material 5a. The sound absorbing materials 5d, 5e,... Are arranged between the sound absorbing materials 5b, 5c.
[0024]
Inside the sound-absorbing material 5, the long holes 4b, 4c and the through holes 4d, 4e,... Communicate with each other to form an exhaust passage 4. The long holes 4b, 4c and the through holes 4d, 4e,. The shape and length of the exhaust passage 4 can be freely selected by changing the number, size, and arrangement, and the distance of the exhaust passage 4 can be increased without changing the size of the silencer 6. Is.
[0025]
Reference numeral 7 denotes an inflow port of combustion gas opened in the side wall of the sound absorbing material 5, 8 denotes an exhaust port, and the inflow port 7 and the exhaust port 8 communicate with the exhaust path 4 in the sound absorbing material 5, respectively. 7 is installed so as to communicate with the exhaust chamber 3.
[0026]
As a specific example, sound absorbing materials 5d, 5e, and 5f are disposed between the sound absorbing materials 5b and 5c, and through holes 4d, 4e, and 4f are respectively disposed at three positions in the sound absorbing materials 5d, 5e, and 5f. The inlet 7 communicates with the elongated hole 4c through the through holes 4d, 4e, and 4f, communicates with the elongated hole 4c through the elongated holes 4c, 4f, 4e, and 4d, and further through the elongated hole 4b. It communicates with the exhaust port 8 through the holes 4d, 4e and 4f.
[0027]
Thus, if the distance of the exhaust path 4 formed inside the sound absorbing material 5 is increased, a large sound absorption area can be secured, so that sound that cannot be absorbed in the past while the sound energy passes through the exhaust path 4 is absorbed. Thus, the water heater can be quieted without changing the size of the silencer 6.
[0028]
Further, the sound absorbing materials 5a, 5b,... Can be configured as flat plates having the same size and shape. When the sound absorbing materials 5a, 5b,. Therefore, the strength of the entire sound absorbing material 5 is improved.
[0029]
Further, in another embodiment shown in FIG. 4, 9 is a cylindrical body having a large number of small holes on the side surface, 10 is a flat plate to which the cylindrical body 9 is attached, and the cylindrical body 9 is transparent to the sound absorbing materials 5d, 5e and 5f. The holes 4d, 4e, 4f and the long holes 4b, 4c of the sound absorbing materials 5b, 5c are arranged so as to be able to pass through.
[0030]
When the sound absorbing materials 5b, 5c,... Are stacked on the flat plate 10 while passing through the through holes 4d, 4e, 4f and the long holes 4b, 4c, the sound absorbing materials 5b, 5c,. Since the position is fixed by the cylindrical body 9, it does not fall apart during assembly, and the positions of the internal through holes 4d, 4e, 4f and the long holes 4b, 4c are not displaced, and the plurality of sound absorbing materials 5b -The sound-absorbing material 5 that can be handled very easily can be configured by securely fixing 5c.
[0031]
Further, since the sound absorbing materials 5a, 5b,... Have almost the same external shape, it is difficult to understand even if the layout and orientation are wrong when assembling, and the exhaust passage 4 is not formed correctly when the mistake is made. If it is attached to 3, it will not be able to absorb sound energy but will increase noise, and it may not be able to exhaust well, resulting in poor combustion.
[0032]
Reference numeral 11 denotes a notch provided in the sound absorbing materials 5a, 5b... And the notch 11 forms a groove on the side surface of the sound absorbing material 5 continuously when the sound absorbing materials 5a, 5b. It is arranged as follows. In the embodiment shown in the figure, the notches 11 are provided with different widths so that when the sound absorbing material 5 is stacked, one side is continuous while expanding obliquely.
[0033]
If it is this structure, if the sound-absorbing material 5a is piled up so that the notch part 11 may continue, internal long hole 4b * 4c and through-hole 4d * 4e ... can be communicated correctly, and it is easy. As a result, it is possible to eliminate the mistake of the sound absorbing material 5.
[0034]
If the plurality of sound absorbing materials 5a, 5b,... Are made of different densities and materials, or the compression surface has different eye shapes from the vertical and horizontal eyes, the sound energy passes through the exhaust passage 4. Since different frequency components can be absorbed by the sound-absorbing materials 5a, 5b..., Noise reduction can be ensured more reliably.
[0035]
【The invention's effect】
As described above, in the present invention, when the sound absorbing material 5 is configured by stacking a plurality of sound absorbing materials 5a, 5b,..., The long holes 4b, 4c and the through holes 4d, 4e,. The exhaust passage 4 is formed in the interior of the sound absorber 5, and the sound absorbing material 5 can be configured with a simple structure with few assembly steps.
[0036]
Further, the size and shape of the sound absorbing materials 5a, 5b,... Can be made uniform, the contact area when the sound absorbing materials 5a, 5b,. The overall strength has improved and it has become easier to handle.
[0037]
Furthermore, since the exhaust passage 4 can be laid out freely by changing the number, size, and arrangement of the through holes 4a and the long holes 4b, 4c provided in the sound absorbing material 5, the shape and installation space differ depending on the ability and type of the product. It is easy to handle even if there is a problem, and has improved usability.
[0038]
Further, if the distance of the exhaust passage 4 formed inside the sound absorbing material 5 is increased, the sound absorbing area can be increased without changing the size of the silencer 6, and the sound that could not be absorbed conventionally is absorbed. Thus, the silencer 6 can be provided, which can surely cope with a high-powered and miniaturized water heater.
[0039]
Further, a cylindrical body 9 having a large number of small holes is erected on the flat plate 10, and the sound absorbing materials 5 a, 5 b, and the long holes 5 b, 5 c and the through holes 4 d, 4 e, and the like are inserted into the cylindrical body 9. If they are overlapped, the sound-absorbing material 5 will not fall apart during the assembly process, and the positions of the long holes 4b, 4c and the through holes 4d, 4e,. It is easy to handle and can improve productivity.
[0040]
Further, when the sound absorbing material 5 is stacked, if the groove is formed by the notch portion 11 continuous on the side surface of the sound absorbing material 5, the sound absorbing material 5 can be assembled while confirming whether it is correctly arranged. Thus, the exhaust passage 4 can be accurately formed without making a mistake in the assembly of the sound absorbing material 5, and the sound absorbing material 5 can be easily manufactured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an oil water heater showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a sound absorbing material showing an embodiment of the present invention.
FIG. 3 is a perspective view of a sound absorbing material showing an embodiment of the present invention.
FIG. 4 is a cross-sectional view of a sound absorbing material according to another embodiment.
FIG. 5 is a cross-sectional view of a sound absorbing material showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Can body 2 Combustion chamber 3 Exhaust chamber 4 Exhaust path 4b Long hole 4c Long hole 4d Through hole 4e Through hole 5 Sound absorbing material 5a Sound absorbing material 5b Sound absorbing material 5c Sound absorbing material 5d Sound absorbing material 5e Sound absorbing material 6 Silencer 7 Inlet 8 Exhaust Mouth 9 Tube 10 Flat plate

Claims (3)

A combustion chamber 2 disposed inside the can body 1, an exhaust chamber 3 adjacent to the can body 1, and an exhaust passage 4 connected to the exhaust chamber 3 through which combustion gas in the combustion chamber 2 passes are provided. In the oil water heater provided with the silencer 6,
The sound absorbing material 5 disposed in the silencer 6 is configured by stacking a plurality of sound absorbing materials 5a, 5b,... In the same direction and filled in the silencer 6.
The plurality of sound absorbing materials 5b, 5c,... In the silencer 6 are provided with long holes 4b, 4c, or through holes 4d, 4e, and so on, and the long holes 4b, 4c or through holes 4d, 4e,. Are connected to the exhaust port 8 of the exhaust chamber 3 from the combustion gas inlet 7 on the combustion chamber 2 side when the plurality of sound absorbing materials 5a, 5b,. ,
The sound-absorbing material 5 that is superposed and filled in the silencer 6 is positioned at both ends of the superposition, and is a non-porous sound-absorbing material 5a that does not include the long holes 4b, 4c or the through holes 4d, 4e,. The sound absorbing materials 5b and 5c, which are arranged on the inner side adjacent to the non-porous sound absorbing material 5a and have different positions of the long holes 4b and 4c, and the sound absorbing materials 5b and 5c provided with the long holes 4b and 4c A plurality of through-holes 4d, 4e, and the like, each having a plurality of through-holes 4d, 4e, and the like.
In the exhaust path 4 constituted by the through holes 4d, 4e,... Of the superimposed sound absorbing materials 5d, 5e,..., The combustion gas inflow port 7 and the exhaust port 8 of the exhaust chamber 3 are configured. A silencer structure for a petroleum water heater in which a sound absorbing material is filled in a silencer characterized by having an opening. A combustion chamber 2 disposed inside the can body 1, an exhaust chamber 3 adjacent to the can body 1, and an exhaust passage 4 connected to the exhaust chamber 3 through which combustion gas in the combustion chamber 2 passes are provided. In the oil water heater provided with the silencer 6,
The sound absorbing material 5 disposed in the silencer 6 is configured by stacking a plurality of sound absorbing materials 5a, 5b,... In the same direction and filled in the silencer 6.
The plurality of sound absorbing materials 5b, 5c,... In the silencer 6 are provided with long holes 4b, 4c, or through holes 4d, 4e, and so on, and the long holes 4b, 4c or through holes 4d, 4e,. Are connected to the exhaust port 8 of the exhaust chamber 3 from the combustion gas inlet 7 on the combustion chamber 2 side when the plurality of sound absorbing materials 5a, 5b,. ,
The sound absorbing materials 5b and 5c having the long holes 4b and 4c are arranged outside the plurality of sound absorbing materials 5d and 5e having the through holes 4d, 4e, and arranged outside the sound absorbing materials 5b and 5c. The sound absorbing material 5a is provided with a through hole, and a cylindrical body 9 having a large number of small holes penetrating the one through hole of the sound absorbing material 5a arranged on the outside is provided upright on the flat plate 10, The sound absorbing materials 5b, 5c,... Are filled with a sound absorbing material in a silencer characterized in that the sound absorbers 5b, 5c, and the through holes 4d, 4e,. Silent structure of oil water heater. A combustion chamber 2 disposed inside the can body 1, an exhaust chamber 3 adjacent to the can body 1, and an exhaust passage 4 connected to the exhaust chamber 3 through which combustion gas in the combustion chamber 2 passes are provided. In the oil water heater provided with the silencer 6,
The sound absorbing material 5 disposed in the silencer 6 is configured by stacking a plurality of sound absorbing materials 5a, 5b,... In the same direction and filled in the silencer 6.
The plurality of sound absorbing materials 5b, 5c,... In the silencer 6 are provided with long holes 4b, 4c, or through holes 4d, 4e, and so on, and the long holes 4b, 4c or through holes 4d, 4e,. Are connected to the exhaust port 8 of the exhaust chamber 3 from the combustion gas inlet 7 on the combustion chamber 2 side when the plurality of sound absorbing materials 5a, 5b,. ,
The side surfaces of the plurality of sound absorbing materials 5a, 5b,... Are provided with notches 11 having different shapes, and the side surfaces of the sound absorbing material 5 are notched when the sound absorbing materials 5a, 5b,. muffling structure of oil water heater filled with sound absorbing material to the silenced vessel characterized in that parts 11 to form a groove which changes continuously.

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