JPH0783585A - Heat accumulative type heat exchanger and heat accumulative type burner system utilizing the exchanger - Google Patents

Abstract

PURPOSE:To prevent either supplying or discharging of fluid from being instantly reduced or when a flow passage is changed over by a method wherein a high temperature fluid communicating hole and a low temperature fluid communicating hole in a changing-over means are spaced at a certain specified angle and arranged and a size of the low temperature fluid communicating hole and a size of the high temperature fluid communicating hole are satisfactory for their specified relations. CONSTITUTION:There is provide an outlet or inlet means 6 having a low temperature fluid chamber 6a for connecting a low temperature fluid system of one of flow passages in two- systems for flowing fluids having temperature difference to both openings of a heat accumulative member 1, and a high temperature fluid chamber 6b for connecting the other high temperature fluid system. The high temperature fluid chamber 6b and the low temperature fluid chamber 6a of the outlet or inlet means 6 are communicated in sequence by a changing-over means 3 to a chamber or a section of the heat accumulating member 1 divided into N- chambers. This changing-over means 3 is arranged such that n/2 of the temperature fluid communicating hole 4 and the low temperature fluid communicating hole 5 are alternatively arranged and they are arranged with a spacing of an angle ' as expressed by an equation I. In addition, a size of each of the communication holes 4 and 5 is set so as to satisfy an equation II to enable an accurate fluid supplying amount to be attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage type heat exchanger for exchanging heat between two systems of fluids having different temperatures, for example, high temperature gas and low temperature gas without switching flow paths. More specifically, the present invention relates to combustion with a low temperature gas (low temperature fluid) such as combustion air in order to recover waste heat from combustion exhaust gas, for example, in a heat storage type alternating combustion burner system or a waste heat recovery system. The present invention relates to a system in which relatively high-temperature gas (high-temperature fluid) such as exhaust gas is alternately passed through a heat storage body for heat exchange, and a heat storage burner system using this heat storage heat exchanger. In the present specification, the high temperature fluid and the low temperature fluid are relatively defined,
For example, it means a relationship between combustion exhaust gas and room temperature combustion air or room temperature air and cold heat gas.

[0002]

2. Description of the Related Art As a heat exchange system for exchanging heat between fluids of two systems via a heat storage body, a Jungstrom type air preheater as shown in FIG. 9 has been generally used.
In this Jungstrom type air preheater 400, a duct 402 through which a relatively high temperature gas such as combustion exhaust gas flows and a duct 403 through which a low temperature gas such as combustion air flows are fixed to a casing 411, and a disc-shaped heat storage is provided. Body 40
1 is rotated to switch the flow of gas to the heat storage body 401 without changing the flow path itself, and the heat recovered from the combustion exhaust gas is used to preheat the combustion air. This Jungstrom type air preheater 400 is divided into at least two chambers 406, 407 and 409, 410 on the upstream side and the downstream side of the rotating heat storage body 401 by partition walls 405, 408 and a sealing material 404. The rotating heat storage body 401 is the sealing material 40.
It is provided so that the heat storage body 401 is warmed by the exhaust gas passing through one of the areas and is heated by the exhaust gas passing through the one area while the combustion air passing through the other area is preheated by the heat of the heat storage body 401. Here, although not shown, the seal material 404 cannot be brought into close contact with the heat storage body 401 formed by arranging corrugated plates in a radial direction, and therefore cannot be slid, so that the seal material 404 is arranged with a slight gap.

On the other hand, a preheating technique for combustion air has been developed in recent years in order to recover a considerable amount of heat from waste gas and improve thermal efficiency. For example, as shown in FIG. 13, a burner 103 having a heat storage body 102 is provided at both ends of a radiant tube 101, and these burners are alternately burned so that the flue gas is discharged through the burner-side heat storage body 102 which is not burned. In addition, a radiant tube burner that preheats combustion air using the heat of the combustion exhaust gas stored in the heat storage body 102 has been proposed (industrial heating Vol.
23, NO.6, P71 Published by Japan Industrial Reactor Association). In the heat storage type heat exchange system in such a combustion system, an electromagnetic valve is adopted as a flow path switching means for switching and connecting the high temperature gas flow path and the low temperature gas flow path to the heat storage body 102 attached to each burner 103. Is common. For example,
Electromagnetic valves 104, 105, 106, 107 are provided at four locations, and by selectively opening and closing them, the flow paths of the high temperature gas and the low temperature gas can be switched. Incidentally, reference numerals 108 and 109 in the figure are solenoid valves for selectively opening and closing the fuel supply system 110.

A four-way switching valve 20 as shown in FIG.
It is also conceivable to use 7. This four-way switching valve 207
Is a port 201,202,203,2 that opens in all directions.
A switching valve 206 is rotatably provided in a casing 205 having 04, and the switching valve 206 selectively connects two adjacent two of the four ports to switch the connection method of the flow paths. It was done.

[0005]

However, in the case of the Jungstrom type air preheater, since the gas flow to the heat storage body 401 is switched by rotating the heat storage body 401, the large and heavy heat storage body is used. When adopting, there is a problem that the structure of the rotating mechanism is complicated and the size becomes large. Further, since the heat storage body itself is rotated, the heat storage body itself is likely to be damaged, and it is difficult to manufacture it from ceramics or the like. Further, since the heat storage body itself is rotated, it is difficult to seal the heat storage body, and it is about 25% when there is a large amount of fluid leakage between the two flow paths. For this reason, there are problems that the heat exchange efficiency becomes low, and the amount of combustion air supplied cannot be accurately controlled when it is used for heat exchange between combustion exhaust gas and combustion air in a combustion system.

Further, in the case of the heat storage type heat exchange system and the combustion system using the solenoid valve as shown in FIG. 13, a large number of expensive high temperature fluid solenoid valves are used, which increases the facility cost. Moreover, since the solenoid valve for air piping is quite large, there is a problem that it takes up a considerable amount of space in a flow path switching device that requires four solenoid valves. Further, there is a problem that the piping is duplicated and complicated and it takes up a lot of space. For example, when it is applied to a heating furnace or a soaking furnace in a steel mill or the like, thousands of solenoid valves are required. Moreover, switching between air and exhaust gas is 1/1 of the conventional heat storage type burner system.
When it is attempted to frequently perform the time from 0 to 1/20, for example, several tens of seconds to 1 minute, the solenoid valve is anxious about the durability.

Further, in the case of the heat storage type heat exchange system and the combustion system using the four-way valve shown in FIG. 14, in the four-way valve having a general structure, the combustion air supply system and the combustion exhaust gas system are short-passed within the valve. There is a problem that the amount of combustion air supplied to the burner fluctuates regardless of control. Further, at the moment of switching, a phenomenon occurs in which the combustion air supply system and the combustion exhaust gas system cause a short path completely and the combustion air is not supplied to the heat storage body side but is directly exhausted.

Therefore, the present invention has a simple switching structure in which there is little gas leakage or mixing between two system flow paths, for example, two gas flow paths having a considerable temperature difference, and the fluid is not changed when the flow paths are switched. An object of the present invention is to provide a heat storage type heat exchanger capable of preventing supply or discharge from being instantaneously reduced or delayed, and a burner system using the same.

[0009]

In order to achieve such an object, the heat storage type heat exchanger of the present invention has N (N = n +) in the circumferential direction.
1, where n is a positive even number of 2 or more and is the number of chambers through which the fluid always flows. ) A heat storage body that is divided into chambers and allows fluid to pass through each chamber in the axial direction, and one low-temperature fluid in one of two passages that is connected to both open ends of the heat storage body and flows a fluid having a temperature difference A double-piped inlet / outlet means partitioned by an annular partition wall into a low temperature fluid chamber connected to the system and a high temperature fluid chamber connected to the other high temperature fluid system, and interposed between the heat storage body and the inlet / outlet means, respectively. The heat storage body and the inlet / outlet means are respectively shut off, while the low-temperature fluid communication hole for communicating the low-temperature fluid chamber and the heat storage body and the high-temperature fluid communication hole for communicating the high-temperature fluid chamber and the heat storage body are alternately arranged. n / 2 pieces each, and a switching means for rotating continuously or intermittently to sequentially communicate the high temperature fluid chamber and the low temperature fluid chamber of the inlet / outlet means with one of the heat storage chambers divided into N chambers. And the interval of the angle α represented by Equation 7 Are arranged and the high temperature fluid passage and the low-temperature fluid passage open,

[Equation 7] Furthermore, the size of the communication hole for low temperature fluid and the size of the communication hole for high temperature fluid can be expressed by the formula 8.

[Equation 8] I am satisfied. Here, the angle α is α = 36
It is preferably set to 0 ° / n. In the present specification, the term “a room in which a heat storage body is partitioned” refers not only to a case where the heat storage body itself is partitioned into a plurality of chambers but also a case where the heat storage body is substantially partitioned into a plurality of chambers by a distribution chamber. Both are included.

Further, the heat storage type heat exchanger of the present invention has N (where N = n + 1, n is a positive even number of 2 or more, which indicates the number of chambers in which the fluid always flows) chambers as one unit. Number of rooms Z
(Where Z = a · N, where a is a positive integer excluding 0 indicating the number of units), a plurality of partitioned chambers are formed in the heat storage body, and fluid always flows in the Z total chambers. A non-a vacant chamber is formed between the N chamber of one unit and the N chamber of another unit, and the arrangement angle α between the high temperature fluid communication hole and the low temperature fluid communication hole is Have a relationship,

[Equation 9] In addition, the size of the communication hole for the high temperature fluid and the communication hole for the low temperature fluid is expressed by the mathematical formula 10.

[Equation 10] I am satisfied.

Further, in the heat storage type heat exchanger of the present invention, the N (N = n + 2, where n is a positive integer of 2 or more is the number of chambers through which fluid always flows) circumferentially is evenly distributed in the circumferential direction. Connected to a low-temperature fluid system of one of two channels that are divided into two compartments and each of which has a temperature difference, and a heat storage body that allows fluid to pass axially through each chamber and is connected to both open ends of the heat storage body Double tubular inlet / outlet means partitioned by an annular partition wall between the low temperature fluid chamber and the high temperature fluid chamber connected to the other high temperature fluid system,
A low-temperature fluid communication hole and a high-temperature fluid chamber and a heat storage body which are respectively interposed between the heat storage body and the inlet / outlet means to shut off the heat storage body and the inlet / outlet means, respectively, and communicate the low-temperature fluid chamber with the heat storage body. And a communication hole for high-temperature fluid that communicates with and are arranged at an interval of an angle C represented by Formula 11,

[Equation 11] The switching means is configured to rotate continuously or intermittently to sequentially communicate the high temperature fluid chamber and the low temperature fluid chamber of the inlet / outlet means with any of the heat storage chambers divided into N chambers.

Further, in the heat storage type heat exchanger of the present invention, N (here, N = n + 2, n is a positive integer of 2 or more, which indicates the number of chambers through which fluid always flows) is defined as one unit. Number of rooms Z
(Where Z = a · N, where a is a positive integer excluding 0 indicating the number of units), a plurality of united chambers are formed in the heat storage body, and a high temperature fluid communication hole and a low temperature fluid communication hole are formed. Equation 12 between

[Equation 12] The interval of the angle C represented by is set.

Further, the heat storage type burner system of the present invention is
The heat storage type heat exchanger is connected to the combustion air system and the combustion exhaust gas system of the burner system, and the burner is burned by the combustion air supplied through the heat storage type heat exchange system, while the combustion exhaust gas is transferred to the heat storage type heat exchange system. After that, the combustion air is preheated to a high temperature near the temperature of the combustion exhaust gas and supplied by the waste heat of the combustion exhaust gas.

[0014]

Therefore, the low temperature fluid chamber and the high temperature fluid chamber of the inlet / outlet means are communicated with different chambers / compartments of the heat storage body through the low temperature fluid communication hole and the high temperature fluid communication hole of the switching means, respectively, and do not intersect each other. Two systems of fluids with different temperatures are flowed into the heat storage body. At this time, in the case of the inventions of claims 1 and 2, in the heat storage body partitioned into the aN chamber, the aN
/ 2 high temperature fluid such as combustion gas flows in the chamber and other a ・ n /
A low temperature fluid such as combustion air flows into the two chambers, and the remaining chamber a is an empty chamber in which no fluid flows because it is not connected to any flow path. Therefore, if the chamber / compartment communicating with the low temperature fluid chamber and the chamber / compartment communicating with the high temperature fluid chamber of the inlet / outlet means are sequentially changed by the operation of the switching means, the high temperature fluid and the low temperature fluid are the same in the heat storage body. It will flow through the room / compartment at different times. For example, a low-temperature fluid such as combustion air will flow into the heat storage body after flowing a high-temperature fluid such as combustion exhaust gas, and the heat of the heat storage body heated by the passage of the high-temperature fluid is taken by the low-temperature fluid, that is, heat. Exchange.

The flow of the fluid is switched such that the communication hole for the high temperature fluid advances in the rotational direction of the communication hole for the low temperature fluid, and the communication hole for the low temperature fluid and the communication hole for the high temperature fluid are provided in the same chamber. Since they do not exist at the same time, and they move from the front communication hole to the front chamber one by one, the front-row communication holes for high-temperature fluid in the chamber next to the vacant chamber are located in front of the heat storage body, that is, the vacant chamber. Even if it happens, the communication hole for the low temperature fluid, the communication hole for the other high temperature fluid, and the communication hole for the low temperature fluid, which are located behind it, are still present in the same chamber / compartment, and the switching does not start. After the hot fluid communication hole in the front row completely moves to the front chamber / compartment that was empty, the room / compartment that has been communicating with the hot fluid communication hole in the front row is now empty. Then, the next low temperature communication hole approaches there. At this time, the low-temperature fluid communication hole extends over two chambers / compartments, the former chamber / compartment and the new room / compartment (vacant chamber), at the same time.
Since it can be switched while supplying fluid to the compartments at the same time,
Fluid flow is never interrupted. Moreover, since the communication hole for the high temperature fluid in the front row is located in the chamber / compartment one before the chamber / compartment where the communication hole for the low temperature fluid is approaching, the high temperature fluid and the low temperature fluid are mixed in the same compartment. There is no.

Further, in switching the flow of the fluid in the case of the inventions of claims 3 and 4, both the communication hole for the high temperature fluid and the communication hole for the low temperature fluid are simultaneously moved to the respective front empty chambers. When the high-temperature fluid communication hole and the low-temperature fluid communication hole completely occupy the front chamber / compartment, the chamber / compartment that has been communicating with the high-temperature fluid communication hole and the low-temperature fluid communication hole until now is It will be vacant. Here, when the communication hole for the high temperature fluid and the communication hole for the low temperature fluid communicate with a plurality of chambers / compartments at one time, the rearmost chamber / compartment in the rotation direction becomes an empty chamber. At this time, the high-temperature fluid communication hole and the low-temperature fluid communication hole are divided into the existing chamber / compartment and the new chamber / compartment.
Since it is switched over while simultaneously straddling one compartment and supplying fluid to two compartments at the same time, the flow of fluid is not interrupted. Moreover, since the communication hole for the high temperature fluid in the front is occupied in the section one before the section where the communication hole for the low temperature fluid is approaching, the high temperature fluid and the low temperature fluid passing in opposite directions are mixed in the same section. It doesn't fit.

Therefore, when the heat storage type heat exchange system is connected to the combustion air system and the combustion exhaust gas system of the burner system, high temperature combustion air close to the temperature of the combustion exhaust gas causes a momentary decrease or delay. The burner can be stably supplied to the burner without forming a stable combustion flame.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to the embodiments shown in the drawings.

FIG. 1 shows an embodiment of the basic constitution of the heat storage type heat exchanger of the present invention. Basically, the heat storage type heat exchanger 30 is evenly divided into N (N = n + 1, where n is a positive even number of 2 or more, the number of chambers through which the fluid always flows) circumferentially. A low temperature fluid that connects a heat storage body 1 that allows a fluid to pass through each chamber in the axial direction and a low temperature fluid system that is one of two flow paths for flowing fluids with different temperatures at both open ends of the heat storage body 1. The inlet / outlet means 6 having a chamber 6a and a high temperature fluid chamber 6b connecting the other high temperature fluid system, and the heat storage body 1 and the inlet / outlet means 6 respectively interposed between the inlet / outlet means 6 and the heat storage body 1 While shutting off respectively, they rotate continuously or intermittently so that the high temperature fluid chamber 6b and the low temperature fluid chamber 6a of the inlet / outlet means 6 are sequentially communicated with any of the chambers / compartments of the heat storage body 1 divided into N chambers. It is composed of a switching means 3.

The heat storage body 1 is not limited to a specific shape or material, and a material or shape may be appropriately selected according to the temperature or property of the heat exchange fluid. For example, for heat exchange between a high temperature fluid of around 1000 ° C. such as combustion exhaust gas and a low temperature fluid of around 20 ° C. such as combustion air, a honeycomb manufactured by extrusion molding using a ceramic such as cordierite or mullite as a material. It is preferable to use a shape. In addition, it is preferable to use metals such as aluminum, iron, and copper, which are relatively cheaper than ceramics, at medium to high temperatures of about 500 to 600 ° C. At lower temperatures, particularly corrosive gases such as corrosive gases are recovered to below the acid dew point temperature. In this case, it is preferable to use resins such as FRP and glass. Further, the shape of the heat storage body 1 is not particularly limited to the honeycomb shape illustrated, and as shown in (A) and (B) of FIG. 10, a flat or corrugated heat storage material 27 is stored in a tubular casing 28. Radially, or as shown in FIG. 10C,
The pipe-shaped heat storage material 27 may be filled in the tubular casing 28 so that the fluid may pass through in the axial direction. Further, in the present embodiment, the single heat storage body 1 is substantially divided into the Z chamber by the distribution chamber 2, but the present invention is not particularly limited to this, and the heat storage body 1 itself is set to the aN chamber. You may form a division. For example, as shown in FIG. 10 (D), a cylindrical casing 2 partitioned by a partition wall 29 in the circumferential direction into an aN chamber and allowing passage of a fluid in the axial direction.
8 may be prepared, and each chamber may be filled with a lump of the heat storage material 27 having a spherical shape, a short tube, a short rod, a strip, a nugget shape, a net shape, or the like. When using a heat storage material 27 such as SiN that can be used at a much higher temperature than cordierite or mullite, it is not easy to form a complicated honeycomb shape, but a simple pipe shape, rod, ball, etc. It is easy to mold into. Therefore,
It is preferable to employ a heat storage structure as shown in (C) or (D) of FIG.

The honeycomb shape originally means hexagonal cells (holes), but in the present specification, not only the original hexagonal cells but also quadrangular and triangular cells are opened innumerably. In the case of the present embodiment, the heat storage body 1 is divided into a total number of chambers Z (aN) by the distribution chambers 2 arranged in front of and behind it. For example, in the case of the embodiment shown in FIG. 1, the partition chamber 8 divides the distribution chamber 2 into three chambers 9a, 9b, 9c.
As a result, as shown in FIG. 3, the inside of the heat storage body 1 in which the fluid does not flow and the chamber 1 in which the high temperature fluid (for example, combustion exhaust gas) flows
3 of 1 and a chamber 12 through which a low temperature fluid (for example, combustion air) flows
It is divided into rooms. That is, since the heat storage body 1 itself has a honeycomb shape composed of a set of cells each of which constitutes an independent flow path, the range partitioned by the distribution chamber 2 is defined as one partitioned chamber. Will be formed. When the distribution chamber 2 is provided, the fluid flowing through the communication hole 4 for high temperature fluid and the communication hole 5 for low temperature fluid can be dispersed so as to be uniformly distributed over the entire area of the heat storage body 1.

Here, the number of chambers divided into the heat storage body 1 is one vacant chamber (a chamber in which no fluid flows) with at least one chamber consisting of a chamber 12 for flowing a low temperature fluid and a chamber 11 for flowing a high temperature fluid. 10 are combined, and when n = 2, that is, N = n + 1
3 is the minimum number of rooms. Then, the chamber 1 through which the high temperature fluid flows
1 and a chamber 12 for flowing a low temperature fluid are combined, for example, in FIG. 6, two sets of chambers 11 _-1 , 11 _-2 for flowing a high temperature fluid and chambers 12 _-1 , 12 _-2 for flowing a low temperature fluid are combined. However, any number of pairs can be combined in this way. It is also possible to form a plurality of units by setting N chambers as one unit. That is, the total number Z of rooms / compartments is Z =
It is represented by a · N (where a is a positive integer excluding 0 indicating the number of units). In this case, the positions of the communication holes 4 and 5 for the high temperature fluid and the low temperature fluid are set so that the empty chamber 10 is located between the units. In this way, it is also possible to form a plurality of chambers of the total number of chambers Z in the heat storage body 1 with the N chambers as one unit. This relationship is illustrated in FIG. In FIG. 5, for convenience of drawing, the positional relationship and size of the communication hole 4 for the high temperature fluid and the communication hole 5 for the low temperature fluid are not shown accurately.

The entrance / exit means 6 is, for example, a cylindrical partition wall 7.
The low temperature fluid chamber 6a connected to the low temperature fluid channel 33 and the high temperature fluid chamber 6b connected to the high temperature fluid channel 34
It is divided into and. In the case of this embodiment, a low temperature fluid chamber 6a is formed inside the partition wall 7, and a high temperature fluid chamber 6b is formed outside. Reference numeral 14 is a low temperature fluid chamber 6a and a high temperature fluid chamber 6b.
It is a partition that separates and.

In the case of this embodiment, the switching means 3 is provided between the inlet / outlet means 6 and the distribution chamber 2 so as to rotate independently. For example, as shown in FIG. 2, the bearing member 15 is interposed between the outer cylindrical portions 13a and 13c of the inlet / outlet means 6 and the support ring 25 of the switching means 3 so that the fluid does not leak between the switching means 3. Seal members 16 and 17 are provided.

The switching means 3 for connecting the low temperature fluid chamber 6a and the high temperature fluid chamber 6b of the inlet / outlet means 6 to only the corresponding chambers / compartments of the heat storage body 1 is composed of a disc orthogonal to the flow path. A / n / a communication hole 5 for low temperature fluid that communicates one chamber / compartment with the low temperature fluid chamber 6a and a communication hole 4 for high temperature fluid that communicates one chamber / compartment with the high temperature fluid chamber 6b I have two of each. For example, in the case of FIG. 1, since n is 2 and a is 1, each has one low temperature fluid communication hole 5 and one high temperature fluid communication hole 4. The high-temperature fluid communication hole 4 and the low-temperature fluid communication hole 5 are located in the same chamber / compartment in the low-temperature fluid communication hole 5 and the high-temperature fluid communication hole 4.
Cannot exist at the same time, the communication holes in the front row occupying the next chamber / compartment of the vacant chamber 10 sequentially move to the front chamber / compartment one by one, the communication hole 5 for the low temperature fluid and the high temperature fluid The size of the communication holes 4 is required to satisfy the following three conditions: when n holes are arranged so that they do not overlap each other in the radial direction, they can all fit in one chamber at the same time. That is, the high temperature fluid communication hole 4 for communicating the high temperature fluid chamber 6b with the chamber 11 for flowing the high temperature fluid of the heat storage body 1, and the low temperature for communicating the low temperature fluid chamber 6a with the low temperature fluid 12 of the heat storage body 1 flowing therethrough. N / 2 fluid communication holes 5 are alternately arranged, and the high temperature fluid communication holes 4 and the low temperature fluid communication holes 5 are arranged at intervals of an angle α represented by Formula 13.

[Equation 13] Further, the sizes of the communication hole 5 for the low temperature fluid and the communication hole 4 for the high temperature fluid have the relationship of Expression 14.

[Equation 14] It is necessary to be satisfied. Here, the angle α is α = 3
It is preferably set to 60 ° / n. At this time, since the communication holes 4 for high temperature fluid and the communication holes 5 for low temperature fluid are arranged at equal intervals, the position design of each communication hole and the drilling work become easy.

When a plurality of units are provided, a number of the empty chambers 10 in which the fluid does not always flow out of the total number Z of chambers are formed between the units, and the relationship of Expression 15 is satisfied.

[Equation 15] The high temperature fluid communication hole 4 and the low temperature fluid communication hole 5 are arranged at an angle α, and the high temperature fluid communication hole 4 and the low temperature fluid communication hole 5 are of the size

[Equation 16] It is provided so as to satisfy the relationship shown by.

[0027] For example, in the case of n = 4, a = 1, as shown in (A) of FIG. 6, the high temperature fluid passage 4 _-1, 4 _-2 and low temperature fluid passage 5 _-1, 5 _{- Two} and two are arranged alternately. Then, the communication hole 4 for the high temperature fluid in the front row in the rotation direction
_-1 and the low temperature fluid communication hole 5 _{-2 Vacancy} 1 with no communication hole
0 is formed. In this case, assuming that all the low temperature communication holes 5 _-1 , _5-2 and the high temperature fluid communication holes 4 _-1 , _4-2 are gathered in one chamber, as shown in FIG. 6B. , All are housed in one room without overlapping in the radial direction.
At this time, the low-temperature fluid communication holes 5 _-1 , _5-2 and the high-temperature fluid communication holes 4 _-1 , _4-2 are set to have substantially the same size and shape, but are not particularly limited thereto. However, the size and shape of the communication hole 5 for low temperature fluid and the communication hole 4 for high temperature fluid may be changed, or the size and shape may be changed for each communication hole if necessary. Is also good.

Further, the high temperature fluid passage 4,4 _-1, 4 _-2,
The shape of the low temperature communication holes 5, 5 _-1 , 5 _-2 , ... is not particularly limited to the circle shown in FIG.
Needless to say, the rectangular shape can also be implemented with the asymmetrical shape shown in FIG. Generally, the amount of low-temperature fluid and the amount of high-temperature fluid are set in a substantially balanced relationship, but in some cases, one communication hole may be set larger than the other communication hole. It should be noted that, even if the communication holes have a shape other than a circular shape, the relationships of the above-mentioned formulas 13 to 16 are established. At this time, β ₁ is a central angle circumscribing the rotation center O of the switching means 3 to the high temperature fluid communication hole 4, and β ₂ is a central angle circumscribing from the rotation center O of the switching means 3 to the low temperature fluid communication hole 5. Is.

Further, the angle α between the high temperature fluid communication hole, for example, 4 _-1 and the low temperature fluid communication hole 5 _-1 , which are in a front-rear relationship, does not allow the same chamber / compartment of the heat storage body 1 to communicate at the same time. Is set to. Therefore, when the communication hole 4 _-1 for high-temperature fluid in the front row is used as a reference, the communication hole 4 _-1 for high-temperature fluid in the front row is used.
_{When -1} approaches the partition 8, the communication hole 5 _-1 for the low temperature fluid in the adjacent chamber is at least the communication hole 4 for the high temperature fluid from the partition 8.
_-1 minute apart, and the high temperature fluid communication hole _{4-2 in the} next chamber is at least the high temperature fluid communication hole 4 _-1 and the low temperature fluid communication hole 5 _-1 minute from the partition 8 of the same chamber. And the low temperature communication hole _5-2 of the fourth chamber is at least separated from the partition 8 of the same chamber by at least the high temperature fluid communication hole _4-1 , the low temperature fluid communication hole _5-1 and the high temperature fluid communication hole 5-1. The holes _4-2 exist at positions separated by three holes. That is, as shown in FIG. 6 (A), the high temperature fluid passage 4 _-1 front row ahead of Check 1
When approaching 0, the low temperature fluid communication hole 5 _-1 does not reach the partition 8 with the next chamber (the chamber one after) 12 _-1 of the same chamber 11 _-1 , and the communication for the high temperature fluid in the front row is not reached. only holes _4-1 communicates simultaneously two chambers so as to straddle the check 10 in front. Then, when the front-row high-temperature fluid communication hole _4-1 has completely moved to the front room, which was the empty room 10, the front-row high-temperature fluid communication hole _4-1 has been present. chamber 11 _-1 becomes Check, there behind the next room 12 _-1 cryogen communicating hole 5 _-1
And the second-row low temperature fluid communication hole 5 _-1 only has 2
The chamber 11 _-1, the chamber 11 _-1 taken empty room as across the 12 _-1
Move in. In this way, the third column of hot fluid communicating hole 4 _-2, 4 column cryogen communicating hole _5-2 is transferred to successively forward the chamber is switched fluid flow. That is, the high-temperature fluid communication holes 4 _-1 , 4 _-2 are placed in a positional relationship in which the high-temperature fluid and the low-temperature fluid are switched by causing the vacant chamber 10 to relatively rotate in the direction opposite to the rotation direction of the switching means 3. And the low temperature fluid communication holes 5 _-1 , _5-2 are arranged.

In this embodiment, the switching means 3 is rotatably supported by the entrance / exit means 6 and the bearing means 15. The drive mechanism is provided so as to be rotatable continuously or intermittently. The drive mechanism is not particularly limited, but in the case of this embodiment, for example, the switching means 3
A gear 24 formed on the peripheral edge of the pinion, a pinion gear 20 arranged around the switching means 3 and meshing with the gear 24, a single shaft 26 connecting the gears 20 and 20, and a center of the shaft 26. The pinion gear 21 is fixed, the drive gear 22 meshes with the gear 21, and one motor 23 for rotating the drive gear 22. Of course, the present invention is not limited to this, and it may be rotationally driven by a friction wheel or the like pressed against the peripheral edge of the switching means 3. Sealing materials 18 and 19 are interposed between the casing 13b for accommodating the heat storage body 1 and the distribution chamber 2 and the switching means 3 and 3 on both sides, and between the switching means 3 and the distribution chamber 2 to seal the seal. Has been done.

Further, the switching means 3 may be formed with each communication hole in almost all regions except the portion for forming the vacant chamber. 7 to 9 show another embodiment of the switching means 3. In the switching means 3 of this embodiment, the high-temperature fluid communication hole 4 and the low-temperature fluid communication hole 5 are holes of a size that occupies substantially the entire area of each chamber of the heat storage body 1 divided into N chambers. For example, an arrangement relationship is established so that at least one empty chamber 10 can be partitioned between a chamber 11 for flowing combustion exhaust gas) and a chamber 12 for flowing a low temperature fluid (for example, combustion air). That is,
The heat storage body 1 is divided into N sections in the circumferential direction by the division by the distribution chamber 2 or the division of the heat storage body itself as in the above-described embodiment.
(N = n + 2, where n is a positive integer greater than or equal to 2 and is the number of chambers through which the fluid always flows.) The chambers are evenly divided, and the fluid can pass through each chamber in the axial direction. Here, the number of chambers divided into the heat storage body 1 is two low chambers (fluid chambers) in at least one set, with one chamber for a low temperature fluid flowing a low temperature fluid and a chamber for a high temperature fluid flowing a high temperature fluid as one set. Room that does not flow) 10,
It is a combination of 10 and 4 rooms / compartment is the minimum number of rooms / compartment. The number of chambers 11 for high temperature fluid and the number of chambers 12 for low temperature fluid do not have to be the same, and in some cases, as shown in FIG. 9, the number of chambers 12 for low temperature fluid is greater than the number of chambers 11 for high temperature fluid. Can be increased or vice versa. In this case, when the ratio between the amount of high temperature fluid and the amount of low temperature fluid is different, the heat transfer surface area of the heat storage body used can be changed for each ratio, and an appropriate heat balance can be maintained. There are advantages. Further, a plurality of chambers / compartments may be made to flow the fluid simultaneously by one communication hole. For example, as shown in FIG. 7 or 8, two or three or more chambers / compartments may be simultaneously connected to one communication hole. In this case, the size of the vacant room required for switching is reduced, and the switching time can be shortened. Further, it is also possible to form a plurality of units with N chambers as one unit. That is, the total number Z of chambers is represented by Z = aN (where a is a positive integer other than 0 indicating the number of units). In this case, the positions of the communication holes 4 and 5 are set such that a group of high temperature fluid chambers 11 and a group of low temperature fluid chambers 12 are alternately arranged with one vacant chamber 10 interposed. This relationship is illustrated in FIGS. 8 and 9.

The switching means 3 comprises one or more chambers / compartments 12, 12 _-1 , 12 _-2 , ..., Of the heat storage body 1.
Communication hole 5 for low-temperature fluid that _connects 12 _-n and the supply chamber 6a
And one or more rooms / compartments 11, 11 _-1 , 1,
1 _-2, ..., and a 11 _-n and hot fluid chamber 6b and the high-temperature fluid passage 4 that communicates only the number of units a. For example, in the case of FIG. 7, since the number of units a is 1, each has one low temperature fluid communication hole 5 and one high temperature fluid communication hole 4. The communication hole 4 for the high temperature fluid and the communication hole 5 for the low temperature fluid must satisfy an arrangement relationship such that at least one or more empty chambers 10 can be defined between them. That is, in the case of one unit, the communication hole 5 for low temperature fluid and the communication hole 4 for high temperature fluid have

[Equation 17] Are arranged at intervals of an angle C represented by. Here, the angle C is an angle corresponding to the vacant space, that is, [360 ° / (n
+2)] is preferable.
In this case, the mixing of the low temperature fluid and the high temperature fluid can be completely prevented, and the pressure loss can be minimized. When a plurality of units are provided, the numerical formula 18 is provided between the high temperature fluid communication hole 4 and the low temperature fluid communication hole 5.

[Equation 18] The intervals of the angle C represented by are set, and the communication holes 4 for the high temperature fluid and the communication holes 5 for the low temperature fluid corresponding to the number of units are alternately arranged.

The switching of the flow of the fluid in the switching means 3 configured as described above is performed by the high temperature fluid communication hole 4 and the low temperature fluid communication hole 5 at the same time in front of the respective empty chambers 1.
It is performed by changing to 0 and 10. And
When the high-temperature fluid communication hole 4 and the low-temperature fluid communication hole 5 completely occupy the front chamber / compartment that was an empty chamber, the high-temperature fluid communication hole 4 and the low-temperature fluid communication hole 5 have been communicated so far. The room / compartment that was open will be vacant. For example, taking the case of 1 unit 8 chambers shown in FIG. 7 as an example,
The last chamber / compartments 11 _-3 and 12 _{-3 in the} rotation direction are vacant. At this time, the high-temperature fluid communication hole 4 and the low-temperature fluid communication hole 5 are newly _added to the _existing chambers / compartments 11 _-1 , 11 _-2 , 11 _-3 and 12 _-1 , 12 _-2 , 12 _-3. Room / compartment 10,1
Although it extends over four compartments such as 0 at the same time, it can be switched while supplying fluid to a plurality of compartments at the same time and uses the vacant chamber 10, so that the flow of the fluid is not interrupted. Since the front high-temperature fluid communication hole 4 is occupied in the section one before the section where the low-temperature fluid communication hole 5 is approaching, the high-temperature fluid and the low-temperature fluid passing in opposite directions are mixed in the same section. Never.

The heat storage type heat exchanger of the present invention configured as described above can be used in a burner system.
Although this embodiment is applied to a burner that burns in a furnace, it is needless to say that the present invention is not limited to this and is also applicable to a burner that burns in a radiant tube.

FIG. 11 shows an example of a heating furnace to which a heat storage type burner system utilizing the heat storage type heat exchanger 30 of the present invention is applied. The heat storage type heat exchanger 30 is connected to the combustion air system (low temperature fluid flow path) 33 and the combustion exhaust gas system (high temperature fluid flow path) 34 of the burner system, and is supplied via the heat storage type heat exchanger 30 for combustion. While burning the burner 35 with air, the combustion exhaust gas is taken out of the furnace 37 and discharged through the heat storage type heat exchanger 30, and the combustion air is preheated to a high temperature near the combustion exhaust gas temperature by the waste heat of the combustion exhaust gas and supplied. I am trying to do it. This furnace comprises a furnace body 38 and at least one burner 35 installed therein. The burner 35 is not particularly limited in its structure and combustion method, but the combustion air is supplied through the heat storage type heat exchanger 30. Further, the combustion exhaust gas in the furnace 37 is taken out by a high temperature fluid means installed in the furnace body 38, for example, an exhaust stack 36 connected to the combustion exhaust gas system 34. Reference numeral 31 in the drawing is a fan for supplying combustion air, and 32 is a fan for discharging combustion exhaust gas. Although not shown, the burner 35 is usually provided with auxiliary equipment such as ignition means and pilot burner.

The heat storage type heat exchanger 3 constructed as described above.
0 and the operation of the heat storage type burner system using the same will be described with reference to FIGS. 1 and 3.

First, in the state shown in FIGS. 1 and 3, when the combustion air as a low temperature fluid is introduced into the low temperature fluid chamber 6a of the inlet / outlet means 6, the combustion air passes through the low temperature communicating hole 5 and is distributed into the distribution chamber. 2 into the second chamber 9b, and further into the corresponding chamber (the chamber through which the low temperature fluid flows) / section 12 of the heat storage body 1. At this time, since the corresponding compartment / chamber of the heat storage body 1 is heated by the heat of the combustion exhaust gas that has passed before the switching, the combustion air passing therethrough removes the heat of the heat storage body 1 to a high temperature, that is, the heat storage body. 1 is set to a high temperature close to the temperature of the combustion exhaust gas. Then, it flows into the second chamber 9b of the downstream distribution chamber 2 and is discharged to the supply chamber 6a through the low temperature communication hole 5 of the switching means 3. Then, it is supplied to a use place, for example, the burner 35 or the like via the flow path 33 connected to the supply chamber 6a. On the other hand, the combustion exhaust gas as the high-temperature fluid introduced into the high-temperature fluid chamber 6b of the inlet / outlet means 6 has a high-temperature fluid communication hole 4
Flow into the first chamber 9a of the distribution chamber 2 through the
(Corresponding chamber (flowing high-temperature fluid)) / compartment 11. Then, the section 11 of the heat storage body 1 is heated.
The flue gas whose temperature has dropped is the first chamber 9 of the left distribution chamber 2.
After flowing into a, it is discharged into the high temperature fluid chamber 6b through the high temperature fluid communication hole 4.

Next, when the switching means 3 is continuously or intermittently rotated counterclockwise from the state shown in FIG.
First, the high-temperature fluid communication hole 4 has the third chamber 9 of the distribution chamber adjacent on the left side.
The combustion exhaust gas flows to the first chamber 9a and the third chamber 9c at the same time in the area c. Then, the combustion exhaust gas passes through the first compartment and the third compartment (the portion indicated by reference numeral 10 in FIG. 3) of the heat storage body 1 and then the first chamber 9a and the third compartment 9a of the downstream distribution chamber 2. High temperature fluid chamber 6b which flows into the chamber 9c and is connected to both chambers 9a and 9c through the high temperature fluid communication hole 4.
Is supplied to. After that, the high temperature fluid communication hole 4 is completely switched to the third chamber 9c (the part that was the empty chamber shown by reference numeral 10 in FIG. 3), and then the low temperature occupied in the second chamber 9b is reached. The fluid communication hole 5 is switched to the first chamber 9a (the chamber portion indicated by reference numeral 11 in FIG. 3), and the second
The region partitioned by the chamber 9b (the chamber indicated by reference numeral 12 in FIG. 3) is the vacant chamber 10. In other words, the combustion exhaust gas is flown into the void 10 where the fluid has not been flowed until now,
Combustion air is made to flow into the chamber 11 in which the combustion exhaust gas has been made to flow, and no fluid is made to flow in the chamber 12 in which combustion air has been made to flow. Therefore, the heat storage body 1 is heated by the heat of the combustion exhaust gas, and the combustion air passing through the heated heat storage body 1 is warmed by the heat of the heat storage body 1. At this time, the regions / chambers in which the combustion air and the combustion exhaust gas flow in the heat storage body 1 are sequentially switched, but since they are always in communication with the high temperature fluid chamber 6b and the low temperature fluid chamber 6a of the inlet / outlet means 6, respectively, the heat storage type The fluid flow system itself before and after the heat exchanger 30 cannot be switched. Further, since the switching of the flow of the fluid is performed while communicating with each of the two chambers using the vacant chamber 10, the fluid flow is not interrupted. Then, the combustion exhaust gas and the combustion air are sequentially switched to the next flow without interruption.

Therefore, if the burner 35 is burned, the combustion exhaust gas generated at that time is exhausted through the combustion exhaust gas system 34, and the waste heat of the combustion exhaust gas is recovered by the heat storage type heat exchanger 30, extremely thermal economy is achieved. Get better. In addition, combustion air that is preheated by using the waste heat recovered by the heat storage type heat exchanger 30 is supplied to the burner 35 side. At this time, it is preferable to switch the switching cycle of the heat storage body 1 to a relatively short time in order to improve thermal efficiency. For example, the switching means 3 may be rotated by one chamber / compartment every 10 seconds to 90 seconds, preferably about 10 seconds, or may be rotated by one room / compartment over about 10 seconds. Such short-time switching can be reliably realized by the flow path switching device 30 of the present invention illustrated in FIG. 1 or 2 without causing leakage of exhaust gas. Further, when the communication hole 4 for high temperature fluid and the communication hole 5 for low temperature fluid are made to have substantially the same size, the combustion gas expanded by combustion is discharged to the outside of the furnace without passing through the heat storage body 1, It is preferable to supply it to a heat treatment facility, a convection heat exchanger, an economizer, a heating facility or the like so that it can be used as a heat source.

The above embodiment is one example of the preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the two systems of fluids having a temperature difference are mainly described by taking a relatively high temperature gas and a low temperature gas as an example, but the present invention is not limited to this.
It can also be used for heat exchange between a fluid having cold energy (cold air) and a fluid having a temperature higher than that (for example, air at room temperature) or heat exchange between different substances. In heat exchange between a cold heat fluid and a fluid of higher temperature (air at room temperature), for example, in a refrigeration cycle, the communication holes and chambers / compartments in the front row next to the vacant chamber, that is, the embodiment shown in FIGS. In the case of, the communication hole 4 for the high temperature fluid and the chamber 11 through which the high temperature fluid flows
Is for flowing the cold heat fluid, and the communication hole and chamber / compartment next thereto, that is, the low temperature fluid communication hole 5 and the low temperature fluid flow chamber 12 in the embodiment shown in FIGS. The arrangement relationship is set so as to allow the normal temperature fluid to flow. In other words, in the present specification, the high temperature fluid refers to a fluid that intends to recover heat (including cold heat), and the low temperature fluid refers to a fluid that is heated (or cooled) by the recovered heat. . The communication hole 4 for the high-temperature fluid and the chamber 11 do not have to precede the communication hole 5 for the low-temperature fluid and the chamber 12, and may have the opposite positional relationship. Further, in the present embodiment, the switching means 3 and the entrance / exit means 6 are formed separately, and only the switching means 3 is rotated. However, the switching means 3 and the entrance / exit means 6 are integrally molded to form the entrance / exit means 6 part. May be rotatably supported and the entrance / exit means 6 may be rotated together with the switching means 3.

Further, in this embodiment, the inlet / outlet means 6 is formed by a cylindrical member, but it is not particularly limited to this, and may be formed by a double cylindrical body such as a hexagon, a quadrangle or a triangle. Further, the above-mentioned embodiment shows the minimum unit of the burner system, and two or more burner systems may be arranged in the furnace body.

[0042]

As apparent from the above description, according to the present invention, the flow of the fluid can be switched only by mechanically rotating the switching means without rotating the heat storage body. The flow is not interrupted, the supply or discharge of the fluid is stable, and there are less problems such as damage to the heat storage body and leakage between the fluids as compared with the Jungstrom type heat exchanger. Moreover, since the switching means can be brought into contact with and sealed, there is almost no leakage of fluid between the two flow paths, the heat exchange efficiency is much improved as compared with a Jungstrom type heat exchanger, and the heat storage efficiency is improved. When used in a burner system of the type, it is possible to accurately control the supply amount of combustion air preheated to a high temperature close to the temperature of combustion exhaust gas.

Particularly, in the case of the inventions of claims 3 and 4, the maximum opening area of the communication hole for the high temperature fluid and the communication hole for the low temperature fluid can be obtained, so that there is an advantage that the pressure loss is small.

According to the heat storage type heat exchanger of the present invention,
Compared with the case of using a solenoid valve or a four-way valve, the equipment cost can be made much lower, and it can be used stably for a long time.

Further, according to the heat storage type burner system using the heat storage type heat exchanger of the present invention, the supply amount of the combustion air is momentarily decreased when the flow is switched, and the flame may become unstable. There is no, and a stable flame can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a basic configuration of a heat storage type heat exchanger of the present invention.

FIG. 2 is a sectional view showing an embodiment of a heat storage type heat exchanger of the present invention.

FIG. 3 is an explanatory diagram showing a relationship between a communication hole for high temperature fluid and a communication hole for low temperature fluid.

FIG. 4 is an explanatory view showing another example of a communication hole for high temperature fluid and a communication hole for low temperature fluid.

FIG. 5 shows the number N of chambers of a heat storage type heat exchanger and the number n of chambers through which a fluid flows.
It is a list figure shown by the relationship between and the number of units a.

FIG. 6 is a diagram showing the relationship between the communication holes for high temperature fluid and the communication holes for low temperature fluid when n = 4 and a = 1, where (A) is a layout of all communication holes and (B) is 1 It is explanatory drawing of the state which gathered all the holes in the chamber.

FIG. 7 is a principle view showing another embodiment of the switching means portion of the heat storage type heat exchanger of the present invention.

FIG. 8 is a list showing the arrangement of chambers in relation to the number of chambers in which a fluid flows and the number of units a.

FIG. 9 is a list diagram showing the arrangement of chambers in the relationship between the number of chambers in which fluid flows and the number of units a in an example in which the numbers of communication holes for high temperature fluid and communication holes for low temperature fluid are different.

FIG. 10 is an explanatory view showing another embodiment of the heat storage body, (A)
Is a type in which plates are radially arranged, (B) is a type in which corrugated plates are radially arranged, (C) is a type in which pipes are bundled,
(D) shows a type in which a heat storage material is filled in a casing divided into N chambers.

FIG. 11 is a schematic view showing an example of a heat storage type burner system to which the heat storage type heat exchanger of the present invention is applied.

FIG. 12 is a perspective view showing a schematic structure of a Jungstrom type air preheater which is a conventional heat exchanger for waste heat recovery.

FIG. 13 is a schematic view showing an example of a heat storage type radiant tube burner incorporating a conventional electromagnetic switching valve.

FIG. 14 is a schematic diagram of a heat storage type radiant tube burner incorporating a conventional four-way switching valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat storage body 2 Distribution chamber 3 Switching means 4 High temperature fluid communication hole 5 Low temperature fluid communication hole 6 Entry / exit means 6a Low temperature fluid chamber 6b High temperature fluid chamber 7 Partition wall 9a, 9b, 9c Distribution chamber 10 Heat storage chamber empty space -Compartment 11 room for flowing high-temperature fluid of heat storage body-compartment 12 room for flowing low-temperature fluid of heat storage body-compartment 13a, 13b, 13c casing

Claims (10)

[Claims] 1. N (N = n + 1, where n is a positive even number equal to or greater than 2 is the number of chambers through which fluid always flows) circumferentially is evenly divided into chambers, and fluid is axially distributed in each chamber. A heat storage body that can pass through, a low temperature fluid chamber connected to one low temperature fluid system of one of the two flow paths that are connected to both open ends of this heat storage body and flow fluid with a temperature difference, and the other high temperature fluid A double tubular inlet / outlet means partitioned by an annular partition wall into a high temperature fluid chamber connected to the system, and a heat storage body and the inlet / outlet means respectively interposed between the heat storage body and the inlet / outlet means. While cutting off each, n / 2 pieces of communication holes for low-temperature fluid that communicate the low-temperature fluid chamber and the heat storage body and communication holes for high-temperature fluid that communicate the high-temperature fluid chamber and the heat storage body are alternately arranged n / 2 each. Then, it rotates continuously or intermittently so that And a switching means for sequentially connecting the high-temperature fluid chamber and the low-temperature fluid chamber to any of the heat storage chambers divided into N chambers, and the high-temperature fluid communication hole and the low-temperature fluid communication hole of the switching means. Is the angle α
Are arranged at intervals of Further, the sizes of the communication hole for the low temperature fluid and the communication hole for the high temperature fluid are expressed by the following equation (2). A heat storage type heat exchanger characterized by satisfying. 2. A total number of chambers Z (where Z = a, where N = n + 1, n is a positive even number of 2 or more and indicates the number of chambers in which the fluid always flows). -In N, a is a positive integer excluding 0, which indicates the number of units, and forms a plurality of partitioned chambers in the heat storage body, and a total of Z chambers is a vacant chamber in which fluid does not always flow. Is formed between the N chamber that constitutes one unit and the N chamber of another unit, and the arrangement angle α between the high temperature fluid communication hole and the low temperature fluid communication hole has the relationship of Equation 3. Number 3] In addition, the relationship between the size of the communication hole for the high temperature fluid and the size of the communication hole for the low temperature fluid is expressed by the mathematical formula 4. The heat storage type heat exchanger according to claim 1, which is satisfied. 3. N (N = n + 2, where n is a positive integer greater than or equal to 2 is the number of chambers in which fluid always flows) circumferentially is evenly divided into chambers, and fluid is axially distributed in each chamber. A heat storage body that can pass through, a low temperature fluid chamber connected to one low temperature fluid system of one of the two flow paths that are connected to both open ends of this heat storage body and flow fluid with a temperature difference, and the other high temperature fluid A double tubular inlet / outlet means partitioned by an annular partition wall into a high temperature fluid chamber connected to the system, and a heat storage body and the inlet / outlet means respectively interposed between the heat storage body and the inlet / outlet means. While blocking each, the low-temperature fluid communication hole that communicates the low-temperature fluid chamber and the heat storage body and the high-temperature fluid communication hole that communicates the high-temperature fluid chamber and the heat storage body have an angle C represented by Formula 5. It is arranged at intervals and And a switching means that rotates continuously or intermittently to sequentially connect the high temperature fluid chamber and the low temperature fluid chamber of the inlet / outlet means to any one of the chambers of the heat storage body divided into N chambers. Heat storage type heat exchanger. 4. A total number of chambers Z (where Z = a, where N = n + 2, n is a positive integer of 2 or more and indicates the number of chambers in which the fluid always flows) is defined as one unit. · N, a is a positive integer excluding 0 indicating the number of units) is formed in the heat storage body with a plurality of partitioned chambers, and the formula 6 is provided between the high-temperature fluid communication hole and the low-temperature fluid communication hole. [Equation 6] The heat storage type heat exchanger according to claim 3, wherein an interval of an angle C represented by is set. 5. The heat storage body is partitioned into an aN chamber (where a is the number of units) in the circumferential direction between the heat storage body and the switching means, and a fluid can pass in the axial direction. The heat storage type heat exchanger according to any one of claims 1 to 4, wherein the heat storage heat exchanger is divided into an aN chamber by providing the distribution chamber. 6. The heat storage heat exchanger according to claim 1, wherein the heat storage body has a honeycomb shape having a large number of cell holes penetrating in the axial direction. 7. The heat storage body is formed by arranging a plurality of pipe-shaped heat storage materials in a radial direction so that a fluid can pass through in an axial direction. Heat storage type heat exchanger. 8. The heat storage heat exchanger according to claim 1, wherein the heat storage body is formed by arranging a large number of flat or corrugated heat storage materials in a radial pattern. 9. A block or a small piece of a heat storage material is filled in a casing in which the heat storage bodies are separated from each other into an aN chamber and through which a fluid can pass in the axial direction. The heat storage type heat exchanger according to any one of 1 to 4. 10. A combustion air supplied by connecting the heat storage heat exchanger according to any one of claims 1 to 9 to a combustion air system and a combustion exhaust gas system of a burner system, and supplying the heat storage heat exchanger through the heat storage heat exchange system. While burning the burner by, the combustion exhaust gas is discharged through the heat storage type heat exchange system,
A regenerative burner system characterized in that the combustion air is preheated to a high temperature near the temperature of the combustion exhaust gas by the waste heat of the combustion exhaust gas and supplied.