JP3523342B2 - Method of manufacturing heat storage body for heat exchanger of combustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
Heat, and preheat the combustion air with the stored heat.
Heat exchange of a combustion device that supplies heated combustion air into the combustion chamber
The present invention relates to a method for manufacturing a heat storage unit for a heat exchanger. [0002] 2. Description of the Related Art Japanese Unexamined Patent Publication No.
A heat recovery type combustion device using a heat exchanger for a baking device is disclosed.
ing. In the heat exchanger for a combustion device described in this publication,
Ceramic heat exchange for intake and exhaust duct structures
The heat exchange is performed by rotating the dexterous heat storage. Conventional sera
Mix storage heat exchangers are extruded by extrusion molding.
It is manufactured. In the extrusion method, a certain viscosity
Extruded clay-like ceramic material
Thus, an unsintered heat storage body having a large number of through holes therein is produced.
The unsintered heat storage body is fired to produce a heat storage body. [0003] However, extrusion is required.
When manufacturing ceramic heat storage bodies by molding method
Has the following problems. (1) In the extrusion molding method, a very large
Inability to produce heat storage. This is the dimensions of the heat storage
Becomes larger, the unfired formed by the extrusion molding method
This is because the shape of the heat storage body is deformed during firing. did
In the extrusion method, large heat storage bodies can be manufactured.
I can't do that. (2) In the extrusion molding method, the heat storage material is
It is not possible to produce many kinds and small quantities at low cost. This is a push
In the extrusion molding method, the length is changed by changing the extrusion amount.
Heat storage elements with different dimensions can be easily manufactured
In the direction perpendicular to the length direction (in the case of a cylinder,
When manufacturing heat storage bodies with different dimensions
This is because different types must be prepared. (3) The pressure drop gradient of the heat storage body is internally formed.
Shape and dimensions of multiple through holes to be formed and thickness of partition walls between through holes
It depends on you. However, extrusion method
Alone can easily obtain heat storage materials with different pressure loss gradients.
I can't do that. This is a constant cross-sectional shape determined by the mold
This is because only the through-hole can be formed. An object of the present invention is to provide a heat exchanger having a desired size.
Heat storage element for heat exchanger of combustion device that can easily produce heat storage element
It is to provide a manufacturing method of. [0008] It is an object of the present invention to provide a heat pump having different pressure drop gradients.
Combustion device heat exchanger that can easily produce heat exchangers for heat exchangers
It is an object of the present invention to provide a method for manufacturing a heat storage body for use. [0009] According to the manufacturing method of the present invention, a flat
Plate-shaped ceramic paper and corrugated band ceramic
Ceramic paper made by superimposing ceramic paper
The plate is wound on a bobbin to make a green body. And this not
The sintering heat storage material is fired to produce a heat storage material for the heat exchanger of the combustion device.
Build. [0010] The conventional ceramic heat storage element is entirely
Made of the same material, the cross-sectional shape of multiple communication holes is also
It has a homogeneous structure that has the same shape over the entire direction.
Temperature / pressure profile of a heat storage body with such a homogeneous structure
Is as shown in FIG. This heat storage body has an outer diameter
144mm, effective inner diameter 90mm, axial length 2
00mm, the equivalent diameter of the through-hole is 1.45mm,
It is a cordierite-made heat storage body with 3,900 pieces. here
And the equivalent diameter d of the through hole is defined as d = 4S / L.
You. Here, S is a cross section in a direction orthogonal to the longitudinal direction of the through hole.
L is a cross section in a direction orthogonal to the longitudinal direction of the through hole.
The length of the contour of the shape. For example, if the cross-sectional shape of the through hole is
In the case of a circle having a diameter a, the equivalent diameter d = [4 (πa^Two
/ 4)] / πa = a, and the through hole is a square of side a.
In some cases, the equivalent diameter d = [4 (a^Two)] / 4a = a
It becomes. As can be seen from FIG. 4, the air pressure and the exhaust pressure
In addition, the air temperature and exhaust air temperature
It changes linearly with a substantially constant gradient. Duct for intake and exhaust
Between the air pressure and the exhaust pressure at the end of the
The smaller the difference, that is, the low-temperature end pressure difference, the more exhaust
The amount of air leaking into the passage will be reduced. Therefore empty
Considering only the point of air leakage, lower the low-temperature end differential pressure as much as possible.
It means that it is necessary to make it. However
The combined heat transfer coefficient from the heat storage material to the air is determined by the convective heat transfer.
Heat transfer coefficient sum of heat transfer coefficient and heat transfer coefficient by radiant heat transfer
Is simply determined by the equivalent diameter of the communication path of the heat storage element.
Increase the number of communication passages or lower the low-temperature end differential pressure.
The heat exchange rate will be worse if only the heat is applied. Therefore, the inventor has found that the heat exchange rate has been greatly reduced.
To reduce the low-temperature end differential pressure without causing
Studied. Theoretically, the number of communication paths of the heat storage
By appropriately setting the equivalent diameter, the pressure loss of the heat storage
If the steepness is set to an appropriate value, the heat exchange rate will be greatly reduced.
It has been found that the low-temperature end differential pressure can be reduced without using the pressure.
Here, the pressure loss gradient is the pressure loss per unit length
Defined. However, when actually producing heat storage
Manufactures heat storage using limited equipment and materials
Therefore, after limiting the overall dimensions of the heat storage body,
A heat storage element having a pressure drop gradient within a desired range can be easily and simply prepared.
It is not easy to obtain cheaply. So the inventor
Change the configuration of a part of the body without changing its overall dimensions
By doing so, without significantly lowering the heat exchange rate,
We examined whether the low-temperature end differential pressure could be reduced. First, the heat storage
The low-temperature side block located on the intake / exhaust duct structure side and the fuel
Divided into the high-temperature side block located on the
Change the equivalent diameter and number of holes that make up the communication passage
I saw it. As a result, pressure loss in the low temperature side block
The gradient is the pressure in the hot side block located on the combustion chamber side.
Form a communication passage so that it becomes larger than the power loss gradient.
For example, the heat exchange rate can be significantly increased without changing the overall dimensions of the heat storage
Low temperature end pressure difference can be reduced without lowering
I found that. In order to realize this configuration, it is necessary to lower the heat storage body.
Changed the equivalent diameter of the communication hole in the part corresponding to the warm side block
Need to be done. High-temperature block and low-temperature block
If the block is provided separately from the
By appropriately combining the types of heat storage units
Thus, it is possible to easily obtain a heat storage body having desired characteristics. I
However, in the conventional technology, an integrated heat storage element is a heat storage element.
Pressure gradient cannot be partially changed
Was. Therefore, in the present invention, a part of the calcined heat storage
Part) is immersed in the coating material liquid
Coating material inside multiple through holes located inside
A layer is formed to change the shape and dimensions of the through hole. [0014] According to the method of the present invention, a ceramic paper
By changing the number of turns of the plate, the size of the heat storage body for the heat exchanger
(In the case of cylindrical shape, radial dimension) can be changed arbitrarily
it can. Therefore, according to the present invention, heat exchange of desired dimensions
It is possible to easily manufacture a heat storage unit for a heat exchanger. Pressure loss
The slope is the number of through holes (mesh), the shape and size of the through holes
Method, by appropriately selecting the thickness of the partition wall between the through holes and the like.
And can be set arbitrarily. The shape of the through hole is corrugated
To change the shape (pitch height) of Lamix paper
The thickness of the partition wall between through holes can be changed.
It depends on the thickness of Lamix paper. Therefore corrugated sheet
You can change the shape of the strip-shaped ceramic paper,
By appropriately selecting the thickness of Lamix paper,
It is possible to easily manufacture a heat storage element having a desired pressure drop gradient.
Can be. Also, a part of the heat storage body (the part that needs to be changed)
Immerse in the coating material liquid and position inside that part
A coating material layer inside a plurality of through holes
If there are multiple through holes due to the presence of the coating material layer
The cross-sectional dimensions of the heat storage can be changed
The loss gradient can be partially changed. [0016] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
explain. FIG. 1 shows a heat exchanger manufactured by the method of the present invention.
A heat storage body is installed in a furnace installed in the heating furnace of a heat exchanger for a combustion device.
FIG. 2 shows a cross-sectional view when applied to a
FIG. 2 is a sectional view taken along line AA of FIG. 1. Note that in these figures
, The hatching on the cross section of the details is omitted.
In FIG. 1, reference numeral 1 denotes a wall portion of a heating furnace.
Is formed with a mounting hole 1a for disposing a heat exchanger for a combustion device.
ing. A plurality of mounting bolts 2 are provided around the mounting hole 1a.
Are buried at predetermined intervals in the circumferential direction. this
The plurality of mounting bolts 2 are provided with a heat exchanger for a combustion device.
3 formed on a metal mounting plate 4 for mounting
The through holes 5 are fitted. The mounting plate 4 has an annular shape
At predetermined intervals in the circumferential direction near the outer periphery.
The plurality of through-holes 5 formed and the plurality of screw holes 6 are formed.
Have. The plurality of screw holes 6 are located between the through holes 5.
The screw holes 6 are formed in such a way as to be described later.
For fixing the intake / exhaust duct structure 22 to be changed
7 are screwed together. The air intake / exhaust duct structure 22 side of the mounting plate 4
On the side, a heat storage element that constitutes the low-temperature block of the heat storage element 8
A metal fixing fitting 11 for fixing the unit 9 is provided.
With fixing means consisting of bolts and nuts not shown
It is fixed, and on the side surface of the mounting plate 4 on the combustion chamber side,
Heat storage unit 1 that constitutes the high temperature side block of heat storage 8
Metal fixing bracket 12 for fixing 0 is not shown
Fixed by fixing means consisting of bolts and nuts
I have. The fixing bracket 11 is provided with francs on both ends of the cylindrical portion 11a.
It has joint portions 11b and 11c. Flange part 11b
Has multiple through holes through which bolts (not shown) pass
The outer end face of the flange portion 11c is
To make a seal by contacting the
It has a surface. The fixing bracket 12 has a cylindrical ring portion.
(Not shown) provided with holes through which bolts penetrate on the outer peripheral surface of
With one end attached to the plurality of attachment pieces.
A bolt member (not shown) welded to the plate 4 is inserted,
The nut is screwed into the mounting member and the fixing bracket 12 is attached to the mounting plate 1.
4 is fixed. The low temperature side block used in this embodiment is constructed.
The heat storage unit 9 is made of metal,
It has a structure as schematically shown in FIGS.
ing. The heat storage unit is flat as shown in FIG.
The plate-shaped strip-shaped steel sheet 9a and the corrugated strip-shaped steel sheet 9b are overlapped.
The plywood thus formed is wound around a cylindrical winding frame 9c (FIG. 1) and swirled.
It is configured in a wound shape. Strip steel plate 9a and corrugated strip steel
Part of the plurality of communication passages of the heat storage body formed between the plate 9b
Each of the plurality of through-holes constituting the
The cross-sectional shape in the direction perpendicular to the longitudinal direction has a mountain shape
You. In addition, the flat strip-shaped steel plate 9a and the corrugated strip-shaped steel plate 9b
Can be made in advance by spot welding, etc.
The construction becomes easy. And outside the heat storage section, a ring-shaped
A metal jacket 9d is fitted. Strip used
As the steel sheet, for example, SUS304, SUS430, S
Has heat resistance and corrosion resistance such as US310 and SUS180
Steel plate can be used. Heat storage unit constituting high-temperature side block
10 is constituted by a heat storage body manufactured by the method of the present invention.
Have been. When making this heat storage unit 10,
First, a flat strip-shaped ceramic paper and a corrugated strip-shaped
Ceramics laminated with Lamix paper
Unsintered heat storage by winding the plate around a cylindrical bobbin to form a spiral
Make a body. Next, the unfired heat storage body is fired to form a ceramic.
Complete a heat storage unit made of stainless steel. In this burner device
Is a publicly known ceramic heat storage unit 10.
Use products manufactured by the well-known extrusion molding method
Can be. At the center of the heat storage unit 10, a winding frame 9c is provided.
The through hole 10a having a diameter substantially the same as the outer diameter of the
Has been established. And formed inside the heat storage unit 10
Of the through-hole forming a part of the plurality of communication passages of the heat storage element
Each is in the axial or longitudinal direction
The cross section has a mountain shape or a triangle shape. This kind of storage
If the heating element is made of ceramics,
Light, mullite, zircon mullite, zirconia, high
Oxide-type ceramics such as lumina, silicon carbide, nitrogen
Silicon carbide, titanium carbide, hafnium carbide, tantalum carbide
Use non-oxide ceramics such as metal and sialon
be able to. Outer peripheral surface of heat storage unit 10 and fixture
12 and a heat-expandable ceramic furnace having heat resistance.
Pillar mat as cushioning material made of iva composite material (product
) Is fixed.
When fixing the heat storage unit 10 to the metal fitting 12, the heat storage
This prevents the unit 10 from being damaged. In this embodiment
In the following, the members from the mounting plate 4 to the thermal expansion mat 13
Thus, a heat storage structure is configured. In this embodiment, the heat storage member 8 is formed inside.
And the air passages of the combustion chamber and the intake / exhaust duct structure 22.
Intake and exhaust passages
The low temperature side block (storage) located on the side of the air duct structure 22
The pressure loss gradient in the heating element unit 9) is
In the high temperature side block (heat storage unit 10) located
Pressure loss gradient. Outer circumference of heat storage unit 10 and fixing bracket 12
On the side, from ceramic fiber or castable
Refractory material 14 is disposed. Of the heat storage unit 9
The through hole in the center of the winding frame 9c and the penetration of the heat storage unit 10
Ceramic fiber tube 16 placed in hole 10a
Inside the burner nozzle 15 in the axial direction
Leave a slight gap to allow the movement of
Has been inserted. And, at the tip of the cylinder 16, a ceramic
A burner hood 17 is attached. This bar
The na hood 17 is injected from the tip of the burner nozzle 15.
To stabilize the flame and return it directly to the heat storage unit 10.
This is provided to prevent Burner hood 17
Is radially protruded from the outer periphery of the cylindrical portion 17a and is connected in the circumferential direction.
And an annular flange portion 17b extending continuously.
Predetermined in the circumferential direction at a position between 7b and the heat storage unit 10
Have a plurality of through holes 17c formed at intervals.
ing. The flange portion 17b is ejected from the burner nozzle 15.
A machine that prevents the fire from returning directly to the heat storage unit 10
Function, the through holes 17c ... preheated to the flange 17b
Part of the air is introduced into the burner hood 17 and
It has the function of assisting combustion in the nahood 17
You. The burner nozzle 15 is connected to a fuel gas pipe 18.
Motive air concentrically through a spacer 19 inside
Arrange the pipe 20 and attach the pipe to the end of the fuel gas pipe 18.
It has a structure to which a sharpener tip 21 is attached. Fuel gas
At the rear end of the spipe 18, a fuel gas inlet 18a is provided.
The rear end of the motive air pipe 20 is
Active air inlet 20a is provided. Motive
The air pipe 20 is supplied with steam as well as air.
In some cases. An intake / exhaust duct structure is provided on the outer wall of the mounting plate 4.
A body 22 is mounted. This intake and exhaust duct structure
22 is an air duct 24 in the internal space of the exhaust duct 23.
It has a structure rotatably housed. Exhaust duct 2
3 has flanges on both ends in the axial direction of the cylindrical duct body 23a.
Flanges 23b and 23c, and one flange
A mounting bolt extending through the mounting plate 4 is provided on the portion 23b.
Are formed in the mounting plate 4 and a plurality of through-holes 23b1.
A plurality of bolts 7 are inserted in alignment with the set screw holes 6.
And a through hole 23b2. Also the other flange
An end plate 23d is bolted to the portion 23c. end
A packing accommodating portion 23e is formed at the center of the plate 23d.
Gland packing is provided in this packing accommodating portion 23e.
25 are accommodated. 26 is the gland packing 25
Packing holding plate for holding in packing accommodating portion 23e
And the packing holding plate 26 is bolted to the end plate 23d.
Have been. The duct body 23a has an exhaust gas outlet 23
f is attached to the end of the exhaust gas outlet 23f.
An exhaust blower is arranged via a pipe (not shown).
You. Sealed by gland packing 25
Inserted into the exhaust passage inside the exhaust duct 23
Air duct 24 is attached to the tip of nozzle outer cylinder 27
Have been. Nozzle concentrically inside nozzle outer cylinder 27
An inner cylinder 28 is arranged, and the nozzle outer cylinder 27 and the inside of the nozzle are arranged.
An air supply path 29 is formed between the cylinder and the cylinder 28. Noz
A cylindrical stopper member 30 is fixed to the tip of the outer cylinder 27.
The stopper member 30 is provided with the nozzle inner cylinder 28.
Is welded at one end. Also at the rear end of the nozzle outer cylinder 27
Has an end cap 31 fixed thereto.
The other end of the nozzle inner cylinder 28 is welded to the cap 31.
At the tip of the nozzle outer cylinder 27, a circumferential interval of 120 degrees
Three communication holes 32 (one communication hole in FIG. 1)
Is shown. ) Is formed. Air duct 24
If three are provided corresponding to these three communication holes 32, three
It is composed of divided air ducts 24a. Each split sky
The air nozzles 33 are fixed at the ends of the air ducts 24a.
Is defined. As shown in FIG. 2, the air nozzle 33
Are three corresponding to the tip of each divided air duct 24a.
The cylindrical portions 33a are interconnected with these three cylindrical portions.
And a connecting portion 33b. Of the cylindrical parts 33a ...
Inside, one end of each divided air duct 24a is opened.
A cylindrical bellows 34 fixed to the end of the mouth is arranged.
You. An annular seal member 35 is provided at the tip of the bellows 34.
Fixed. The seal member 35 is provided in the heat storage unit 9.
High mechanical strength because it rotates while contacting the end face of
It is preferable to use gasket tape or metal sealing members.
New In this embodiment, carbon steel is used as the seal member 35.
Used. In this embodiment, the bellows 34
The sealing member is constituted by the screw member 35. As in the present embodiment, three
If a configuration in which the divided air ducts 24a are arranged is adopted,
Compared to the case of using one air duct, the heat exchange efficiency
Can be enhanced. Particularly, in this embodiment, the sealing member 3
5 is an end of one flange portion 11c of the fixture 11
The split air duct is
You can make the most of it. The bellows 34 is springy and flexible in the axial direction.
With one end fixed and the other end flexible
It has a movable structure. In this embodiment, a metal market is used.
Sales bellows were used. Bellows 34 is a heat storage unit.
Compressed between the air inlet 9 and the open end of the divided air duct 24a.
The heat storage unit 9 is not
There is some error in the attachment, the axis of the heat storage unit 9 and the
Even if the axis of the split air duct 24a is not parallel,
The bellows 34 changes due to the spring property and flexibility of the rose 34.
And the sealing member 35 is closely attached to the end face of the heat storage unit 9.
Can be done. Therefore, there is some mounting error.
The advantage is that the sealing performance is not
Can be At the end of the winding frame 9c of the heat storage unit 9,
One end of the seal fixing tubular member 36 is fixed. This
Of the air nozzle 33 in the connecting portion 33b
And the other end is inside the cylindrical stopper member 30.
Terminated. A flan formed at the other end of the cylindrical member 36
The sealing member 37 made of metal bellows
One end is fixed. The sealing member 37 is a stopper
The flange 30 of the material 30 contacts the burner nozzle 15
The exhaust gas entering the inside of the stopper member 30 is
Between the connecting portion 33b of the nozzle 33 and the cylindrical member 36
Prevents leakage through gaps. If this seal part
When the material 37 is not provided, the high-temperature furnace combustion gas is
Between the gas pipe 18 and the ceramic fiber tube 16
And the combustion gas may burn the pipe 18
is there. The sealing member 37 is also the same as the sealing member 3 described above.
As in the case of No. 4, it has a function of absorbing assembly errors. Rotation for rotatably supporting the nozzle outer cylinder 27
The support mechanisms 38 and 39 are attached to the end plate 23 d of the exhaust duct 23.
Four rods 4 fixed so as to surround the nozzle outer cylinder 27
0 ... are fixed. The four rods 40 are square
The nozzle outer cylinder 27 is located at the center of
The rods are arranged in a positional relationship such that they are located.
The support mechanisms 38 and 39 are fixed to the rods 40.
Four arms 38a extending toward the chisel outer cylinder 27,
, 39b at the tips of 39a, respectively.
... are attached. The rotation support mechanisms 38, 39 of the nozzle outer cylinder 27
Introduce the air for combustion into the part located between
At least one opening 27a is formed. And this
Gasket holding member 41 surrounds the nozzle outer cylinder
It is attached so as to surround the outer periphery of the 27. Packing
Inside the holding member 41, on both sides of the introduction port 27a.
Air introduction space 41a formed around the introduction port 27a
Packings 42 and 43 are provided to make the airtight state.
Is placed. The nozzle outer cylinder 27 includes a packing holding member 41.
And the packing holding member 41 is made up of two rods.
It is fixed to 40. An empty packing holding member 41
The air intake tube 44 communicates with the air introduction space 41a.
Has been fixed. Not shown in this air intake cylinder 44
A pipe is connected and a blower is arranged at the end. At the ends of the four rods 40, mounting plates 45 are provided.
Is fixed to the lower end of the mounting plate 45 for driving.
A motor 46 is mounted. For the output shaft of motor 46
Has a sprocket 47 attached to it.
The chain 48 hung on the nozzle 47
The sprocket fixed to the end cap 31 fitted to the end
The ket 49 is also hung. The motor 46 rotates
The rotational force is transmitted to the nozzle outer cylinder 27,
The cylinder 27 rotates. In this embodiment, the motor 46 and the
Rockets 47, 48, chain 49, and rotation support mechanism 38
And 39, the air flow of the intake / exhaust duct structure 22 is
Rotational movement between the heat storage structure and the airway and exhaust passage
Is formed. End cap
The stopper member 50 is loosely fitted to the stopper 31. this
The stopper member 50 protrudes from the outer periphery of the end cap 31.
Fit on the outer periphery of the end cap 31 and the annular protrusion 31a
Arranged between the combined and fixed stop ring 51.
A contact member 5 provided at the tip of the stopper member 50.
0a comes into contact with the contact portion provided on the mounting plate 4,
The movement of the chisel outer cylinder 27 toward the heat storage body is restricted. At the center of the upper part of the mounting plate 45,
A threaded rod 52 with a thread at the tip is secured.
Have been. This rod 52 is parallel to the burner nozzle 15
And a screw member 53 is screwed into the screw portion.
ing. The screw member 53 is a fuel gas pipe of the burner nozzle.
Pivots on the other end of the arm member 54 having one end fixed to the
It is freely held. The axial direction of the burner nozzle 15
When adjusting the position, the screw member 53 may be turned.
In this embodiment, the rod 52, the screw member 53, and the arm
The member 54 constitutes a burner nozzle position adjusting mechanism.
Have been. Next, the operation state of the heat exchanger will be described.
I do. First, with the burner lit, the air duct
Combustion air from the combustion chamber 24 passes through the communication hole of the heat storage body 8.
Supplied to. The combustion air supplied to the combustion chamber is
Flame is formed by mixing with fuel ejected from nozzle 15
I do. The combustion air is exhausted when passing through the through hole of the heat storage body 8.
It is heated by the regenerator 8 heated by the gas. Burning
Means that the air duct 24 is driven at a predetermined rotational speed by the motor 46.
Spinning at. Specifically, the air duct 24
At two or more rotation speeds. Air duct 24
The part where the temperature of the heat storage body 8 is lowered by the rotation is the combustion chamber side.
From the exhaust gas to the exhaust duct 23
Heated again. The high temperature side block of this embodiment is constructed.
The heat storage unit 10 is made of cordierite.
Therefore, it is targeted for a combustion amount of 100,000 kcal / h.
You. The heat storage unit 10 has an outer diameter of 144 mm,
90mm effective inner diameter, 150mm axial dimension, penetrating
The equivalent diameter of the holes is 1.54 mm and the number of through holes is 3900
Pieces, effective surface area is 11.5cm^Two/ Cm^ThreeIt is. Also
The heat storage unit 9 constituting the low temperature side block is made of SUS
430 steel plate with a diameter of 14
4mm, effective inner diameter 90mm, axial dimension 50m
m, the equivalent diameter of the through hole is 1.80 mm, and the number of through holes is
3580, effective surface area is 22.3cm^Two/ Cm^Three, Open
The mouth ratio is 91.7%. The low temperature side block is made of gold as in the above embodiment.
It is not limited to that formed by a genus. Low temperature blow
Made of ceramics as the heat storage unit 9 that constitutes the rack
Can be used. Also, this embodiment
Then, the high temperature side block and the low temperature side block are each 1
It consists of two heat storage units.
May be configured by combining a plurality of heat storage units.
No. Further, in this embodiment, the high-temperature side block and the low-temperature side block
And a separate heat storage unit.
The inner diameter of the through hole in a part of the heat storage body can be adjusted by various techniques
High temperature side block with different pressure drop gradient by changing
And the low-temperature side block may be formed. Also
In this embodiment, the heat storage body and the burner nozzle are combined.
However, the heat storage body and the burner nozzle may be different from each other.
Of course. Separate the heat storage and burner nozzle
The air duct of the intake / exhaust duct structure
To rotate the heat storage body,
May be rotated. Furthermore, in the above embodiment,
A bellows 34 is arranged at the open end of the air duct 24.
However, even if a part of the air duct 24 is constituted by a bellows,
Similar effects can be obtained. As in this embodiment, the low-temperature side block
High temperature block located on the combustion chamber side
Greater than the pressure drop gradient at
Although the heat exchange rate is slightly worse,
The low-temperature end differential pressure can be reduced without changing the dimensions of
Sealability can be improved. In addition, a flat strip steel plate
Or a corrugated strip steel plate or
Wrap a plywood made by stacking Lamix paper
When the low-temperature side block is configured, steel plate or ceramic
Paper thickness and corrugated strip steel or ceramics
By selecting the paper pitch height, the desired
And heat storage with opening ratio and pressure drop gradient
In addition to changing the number of turns, the desired diameter can be obtained.
The heat storage of the method can be easily obtained. [0037] According to the method of the present invention, the ceramics
Heat storage for heat exchangers by changing the number of turns of paper plywood
Arbitrarily change the dimensions (in the case of cylindrical shape, the radial dimension)
Can easily produce heat exchangers for heat exchangers of desired dimensions.
Can be built. In addition, corrugated strip-shaped ceramics
Change the shape of the paper, or change the thickness of the belt-shaped ceramic paper.
The desired pressure drop gradient can be obtained by selecting
It is possible to easily manufacture a heat storage element that performs heat storage. As in the present invention, a part (change
Part) is immersed in the coating material liquid
Coating inside the through holes located inside the part
When the coating material layer is formed, the presence of the coating material layer
Can change the dimensions of the cross-sectional shape of multiple through holes.
Easily produce heat storage elements with partially different pressure loss gradients
can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a case where an embodiment of a heat exchanger for a combustion device according to the present invention is applied to a burner device installed in a heating furnace. FIG. 2 is a sectional view taken along line AA of FIG. 3A is a schematic front view showing a structure of a metal heat storage unit, and FIG. 3B is an enlarged view of a main part of FIG. 3A. FIG. 4 is a diagram showing a result obtained by calculating changes in air pressure, exhaust pressure, air temperature, and exhaust temperature inside a heat storage unit made only of a ceramic heat storage unit. [Description of Signs] 1 Wall portion of heating furnace 2 Mounting bolt 3 Heat exchanger for combustion device 4 Mounting plate 5 Through hole 6 Screw hole 7 Bolt 8 Heat storage unit 9, 10 Heat storage unit 11, 12 Fixture 13 Thermal expansion Mat 14 Refractory material 15 Burner nozzle 17 Burner hood 22 Intake / exhaust duct structure 23 Exhaust duct 24 Air duct 24a Split air duct 27 Nozzle outer cylinder 28 Nozzle inner cylinder 34 Bellows 35, 37 Sealing member

Continuation of the front page (72) Inventor Hitoshi Kaji 2-1-1, Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside Chiyoda Chemical Works Co., Ltd. (72) Inventor Yasuo Hirose Naka-ku, Yokohama-ku, Kanagawa Prefecture Chome 4-7, Furness Techno Co., Ltd. (56) References JP-A-49-31714 (JP, A) JP-A-5-17760 (JP, A) JP-A-63-159663 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) F28D 17/04

Claims (1)

(57) [Claim 1] A ceramic paper plywood obtained by laminating a flat strip-shaped ceramic paper and a corrugated strip-shaped ceramic paper is wound around a bobbin to form an unsintered heat storage body. Sintering the unsintered heat storage body to form a sintering heat storage body having a plurality of through holes therein, and immersing a part of the sintering heat storage body in a coating material liquid and positioning the plurality of sintering heat storage bodies inside the part. Forming a coating material layer inside the through-hole to manufacture a heat exchanger for a heat exchanger.