WO2018101705A1

WO2018101705A1 - High-temperature regenerator

Info

Publication number: WO2018101705A1
Application number: PCT/KR2017/013699
Authority: WO
Inventors: 이흥주; 조용선; 조현욱
Original assignee: 엘지전자 주식회사
Priority date: 2016-11-29
Filing date: 2017-11-28
Publication date: 2018-06-07
Also published as: CN109312966A; KR102524261B1; KR20180060554A

Abstract

The present embodiment comprises: an outer cell; an inner cell disposed inside the outer cell; a dilute solution supply pipe for supplying a dilute solution into the outer cell; a burner for generating combustion gas inside the inner cell; a plate-type heat exchanger disposed between the outer cell and the inner cell so as to exchange heat between the dilute solution and the combustion gas; and an exhaust duct for guiding the combustion gas having passed through the plate-type heat exchanger, wherein the plate-type heat exchanger includes a plurality of heat transfer units stacked in the direction orthogonal to the flow direction of the combustion gas, the heat transfer unit has an inner passage, through which the combustion gas passes, formed to be long in the horizontal direction between a pair of heat transfer bodies of which one end of each is connected and the other ends of each are joined, the heat transfer body has a joining body joined to the other adjacent heat transfer unit, and a dilute solution space for accommodating the inner dilute solution of the outer cell is opened in the vertical direction between the heat transfer units, which are adjacent to each other, among the plurality of heat transfer units, and the present invention has simpler manufacturing than when thin sheets are continuously folded and bent, and has high reliability.

Description

High Temperature Regenerator

The present invention relates to a high temperature regenerator, and more particularly, to a high temperature regenerator which is installed in an absorption chiller and separates a refrigerant from an absorption liquid by using a combustion gas generated in a burner.

Absorption chillers are appliances capable of cooling or heating, including evaporators, absorbers, condensers and regenerators.

Absorption-type refrigerators may use a process in which the refrigerant is absorbed and regenerated in the absorbent liquid in the absorber and the regenerator without using mechanical compression in the refrigerant, and the refrigerant may repeat the absorption, regeneration, condensation and evaporation processes.

Absorption refrigeration is a cycle that absorbs, regenerates, condenses, and evaporates a refrigerant (ie, water) using an absorbent liquid (for example, an aqueous lithium bromide (LiBr) solution) mainly using a gas or fuel such as LPG or LNG as a heat source. The evaporator can produce cold water, or the condenser can produce hot water.

Examples of such absorption refrigerators include Korean Patent Application Publication No. KR 10-2013-0089503 A (published Aug. 12, 2013), and Japanese Patent Application Laid-open No. Hei 5-256536 A (published Oct. 5, 1993). .

The high temperature regenerator according to the prior art has a problem that the plate heat exchanger is difficult to manufacture the plate heat exchanger because the plate heat exchanger continuously bends the thin plate to form bellows fins.

An object of the present invention is to provide a high temperature regenerator having a plate heat exchanger that is easy to manufacture and highly reliable.

An outer cell according to an embodiment of the present invention; An inner cell disposed inside the outer cell; A rare solution supply pipe for supplying a rare solution into the outer cell; A burner for generating combustion gas into the inner cell; A plate heat exchanger disposed between the outer cell and the inner cell to exchange heat between the rare solution and the combustion gas; And an exhaust duct for guiding the combustion gas passing through the plate heat exchanger, wherein the plate heat exchanger includes a plurality of unit heat transfer units stacked in a direction orthogonal to the flow direction of the combustion gas. An inner passage through which the combustion gas passes is formed in a horizontal direction between a pair of heat transfer bodies connected to each other and joined at the other end, and the heat transfer body is formed with a joint body joined to another adjacent unit heat transfer unit. Between the unit heat transfer units adjacent to each other among the unit heat transfer units, a rare solution space in which the rare solution inside the outer cell is accommodated is opened in the vertical direction.

Each of the pair of heat transfer bodies includes a heat transfer plate portion; A one end connection portion bent at one end of the heat transfer plate portion and connected to another heat transfer body; The other end portion is bent at the other end of the heat transfer plate portion and bonded to the other heat transfer body, and the inner passage is formed between the one end connection portion and the other end junction.

The heat transfer plate portion is formed with an uneven portion slidably contacting the heat transfer plate of the other heat transfer body.

It includes a sealing member in close contact with the outermost unit heat transfer unit of the plurality of unit heat transfer unit, the sealing member is formed with a avoiding hole to avoid the uneven portion formed in the outermost unit heat transfer unit.

The joint body includes a protrusion projecting toward the heat transfer plate portion of the other unit heat transfer unit adjacent to the heat transfer plate portion, and an outer junction portion protruding from the protrusion and bonded to the other heat transfer unit adjacent to the heat transfer plate portion.

The outer joining portion is bent and joined in the opposite direction of the rare solution space at the protruding portion.

The rare solution space is formed by heat transfer bodies facing each other of adjacent unit heat transfer units and junction bodies protruding from the heat transfer bodies.

The high temperature regenerator includes a pair of upper supporters fitted to both upper sides of the plurality of unit heat transfer units; And a pair of lower supporters fitted to both lower sides of the plurality of unit heat transfer units.

The high temperature regenerator further includes a side body disposed next to the plate heat exchanger, and the side body has a combustion gas hole through which the combustion gas passing through the inner passage flows to flow into the exhaust duct.

The junction body is inserted into the combustion gas hole.

The junction body has a height in contact with the side body.

The exhaust duct includes a lower exhaust duct portion positioned next to the plate heat exchanger, and an upper exhaust duct portion protruding from the lower exhaust duct portion. The lower exhaust duct part may be opened and closed and a duct door facing one surface of the plate heat exchanger is installed.

The inner passage opens toward the duct door.

The outer shell may include a shell body having a first shell body portion rounded at a lower portion thereof and an upper surface thereof open and a second shell body portion having a higher height than an upper portion of the first shell body portion; A lower first side body covering one end of the first shell body part; An upper first side body covering one end of the second rest body part; A second side body larger than each of the lower first side body and the upper first side body and covering the other end of the second shell body portion on an opposite side of the lower first side body and the upper first side body; A top cover disposed on an upper portion of the first shell body portion to close an upper portion of the lower first side body and a lower portion of the upper first side body. The exhaust duct is disposed above the top cover.

The upper first side body is provided with a combustion gas hole for guiding the combustion gas passing through the inner passage into the exhaust duct.

According to an embodiment of the present invention, there is an advantage in that manufacturing is easier and more reliable than when bending a thin plate continuously.

In addition, there is an advantage that it is easy to clean the plate heat exchanger through the exhaust duct.

1 is a view showing the configuration of an example of an absorption type refrigerator having a high temperature regenerator according to an embodiment of the present invention;

2 is a perspective view showing a high temperature regenerator according to an embodiment of the present invention;

3 is a partially cutaway perspective view of the inside of the high temperature regenerator according to the embodiment of the present invention;

4 is a cross-sectional view taken along the line A-A shown in FIG.

5 is a perspective view of a high temperature regenerator according to an embodiment of the present invention;

6 is an exploded perspective view of the high temperature regenerator shown in FIG. 5;

7 is an exploded perspective view of a plurality of unit heat transfer units shown in FIG. 6 before being stacked;

FIG. 8 is a perspective view before the pair of heat transfer bodies shown in FIG. 7 are bonded.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a configuration of an example of an absorption type refrigerator having a high temperature regenerator according to an embodiment of the present invention.

The high temperature regenerator 20 of the present embodiment may be applied to a dual effect absorption refrigerator.

The absorption chiller to which the high temperature regenerator 20 is applied (hereinafter, referred to as an absorption type refrigerator) may include an absorber 10, a high temperature regenerator 20, a low temperature regenerator 30, a condenser 40, and an evaporator 50. The absorption chiller may further include a low temperature heat exchanger 60 and a high temperature heat exchanger 70.

The absorber 10 absorbs the gaseous refrigerant evaporated by the evaporator 50 into the absorbent liquid, and an absorption region 11 in which the gaseous refrigerant is absorbed by the absorbent liquid may be formed therein. The absorber 10 may include an absorbing liquid spraying unit 12 for spraying the absorbing liquid into the absorbing region 11.

The absorber 10 may include a coolant pipe 13 through which coolant passes. At least a portion of the cooling water pipe 13 may be located in the absorption region 11.

The gaseous refrigerant moved from the evaporation region 51 of the evaporator 50 to the absorption region 11 may be absorbed by the absorbent liquid injected from the absorbent liquid injection unit 12, and heat generated when the gaseous refrigerant is absorbed into the absorbent liquid may be absorbed. It may be delivered to the coolant pipe 13 of the absorber 10.

The absorbent liquid sprayed through the absorbent liquid sprayer 12 may be a concentrated liquid separated from the refrigerant in the low temperature regenerator 30, and the concentrated liquid sprayed from the absorbent liquid sprayer 12 to the absorbent region 11 may be an absorbent region 11. ) Can be converted into a rare solution as gaseous refrigerant is absorbed.

The rare solution of the absorber 10 may flow into the high temperature regenerator 20 and be separated from the refrigerant in the high temperature regenerator 20.

The absorber 10 may be connected to a rare solution pipe 14 for guiding the rare solution in which the refrigerant is absorbed. The rare solution pipe 14 may pass through the absorbent liquid flowing from the absorber 10 toward the high temperature regenerator 20. The rare solution pipe 14 may be provided with a pump 15 for pumping the rare solution.

The rare solution pipe 14 may be connected to the first passage 61 to be described later of the low temperature heat exchanger 60 to guide the rare solution to the first passage 61 of the low temperature heat exchanger 60. The rare solution pipe 14 is connected to the rare solution supply pipe 220 which will be described later, and of course, the rare solution can be guided to the rare solution supply pipe 220.

The high temperature regenerator 20 may include an outer shell 200 forming an appearance. The high temperature regenerator 20 may include a rare solution supply pipe 220 for supplying a rare solution flowing in the absorber 10 to the inside of the outer shell 200. The high temperature regenerator 20 may include a burner 230 generating a combustion gas for heating the absorption liquid.

The rare solution flowing in the absorber 10 (that is, the absorbent liquid containing a relatively large amount of refrigerant) may be heated by the combustion gas generated in the burner 230, and the refrigerant absorbed in the absorber liquid absorbs heat of the combustion gas. Can be separated from the absorbent liquid. The absorbent liquid in which the refrigerant vapor is separated may be converted into an intermediate absorbent liquid (ie, an intermediate solution).

The high temperature regenerator 20 may include a heat exchanger for exchanging the rare solution and the combustion gas, and the heat exchanger 240 is a plate heat exchanger 240 in which the absorbent liquid and the combustion gas are heat-exchanged by a plate-shaped heat transfer body. It can be composed of).

On the other hand, the high temperature regenerator 20 may further include an exhaust duct 250 for guiding the combustion gas to the outside of the high temperature regenerator 20.

The high temperature regenerator 20 may be connected to a refrigerant vapor engine 21 for guiding the gaseous refrigerant separated from the absorbing liquid to the low temperature regenerator 30.

The high temperature regenerator 20 may be connected to the intermediate solution pipe 22 through which the intermediate solution separated from the gas phase refrigerant is guided. The intermediate solution pipe 22 may pass through the absorbent liquid flowing from the high temperature regenerator 20 toward the low temperature regenerator 30. The intermediate solution pipe 22 may be connected to the fourth channel 72 described later of the high temperature heat exchanger 70 to guide the intermediate solution to the fourth channel 72 of the high temperature heat exchanger 70. The intermediate solution pipe 22 may be connected to the absorption liquid injection unit 33 of the low temperature regenerator 30 to guide the intermediate solution to the absorption liquid injection unit 33 described later.

The low temperature regenerator 30 may have a regeneration space 31 formed therein. The low temperature regenerator 30 may include a vapor coolant tube 32 through which at least a portion of the low temperature regenerator 30 is located in the regeneration space 31 and through which the gaseous phase refrigerant flowing from the high temperature regenerator 20 passes. The low temperature regenerator 30 may include an absorption liquid injection unit 33 for spraying the intermediate solution flowing in the high temperature regenerator 20 to the regeneration space 31.

The low temperature regenerator 30 may be connected to a rich solution pipe 34 for guiding the concentrated solution separated from the refrigerant in the regeneration space 31. The concentrated solution pipe 34 may guide the absorption liquid flowing from the low temperature regenerator 30 to the absorber 10. The rich solution pipe 34 may be connected to a second flow path 62 to be described later of the low temperature heat exchanger 60 to guide the rich solution to the second flow path 62 of the low temperature heat exchanger 60. The concentrated solution pipe 34 may be connected to the absorbent liquid injection unit 12 of the absorber 10 to guide the concentrated solution of the low temperature regenerator 3 to the absorbent liquid injection unit 12 of the absorber 10.

The low temperature regenerator 30 may be connected to a condenser connection pipe 35 for guiding the refrigerant passing through the steam refrigerant pipe 32 to the condensation region 41 of the condenser 40.

The condenser 40 may have a condensation region 41 in which a refrigerant is condensed. The condenser 40 includes a cooling water pipe 42 at least partially disposed in the condensation region 41 and in which the refrigerant moved from the low temperature regenerator 30 exchanges heat with the cooling water.

The cooling water pipe 42 of the condenser 40 may be connected to the cooling water pipe 13 and the cooling water pipe connecting pipe 43 of the absorber 10, and the cooling water may be connected to the cooling water pipe 13 and the cooling water pipe of the absorber 10. The connection pipe 43 and the cooling water pipe 42 of the condenser 40 may pass sequentially.

The condenser 40 may be connected to the evaporator connecting pipe 44 for guiding the refrigerant condensed in the condensation space 41 to the evaporation region 51 of the evaporator 50.

The evaporator 50 may have an evaporation region 51 in which the refrigerant flowing in the condenser 40 is evaporated. The evaporator 50 may include a cold water pipe 53 through which at least a portion of the evaporator 50 is disposed in the evaporation region 51 and through which the cold water that exchanges heat with the refrigerant in the evaporation region 51 passes.

The low temperature heat exchanger 60 may include a first passage 61 through which the rare solution flowed from the absorber 10 passes, and a second passage 62 through which the agricultural solution flowed from the low temperature regenerator 30 passes. have. The rare solution passing through the first passage 61 and the concentrated solution passing through the second passage 82 may be heat-exchanged with each other in the low temperature heat exchanger 60.

The low temperature heat exchanger 60 may be connected to a heat exchanger connection pipe 63 for guiding the refrigerant passing through the first flow path 61 to the third flow path 71 to be described later of the high temperature heat exchanger 70.

The low temperature heat exchanger 60 may be connected to the absorber connecting pipe 64 for guiding the concentrated solution passing through the second flow path 62 to the absorbent liquid injection part 12 of the absorber 10.

The high temperature heat exchanger (70) is a third passage (71) through which the rare solution flowing in the first passage (61) of the low temperature heat exchanger (60) passes, and the intermediate solution flowing in the high temperature regenerator (20). It may include four euros (72). The rare solution passing through the third passage 71 and the intermediate solution passing through the fourth passage 72 may be heat-exchanged with each other in the high temperature heat exchanger 70.

The high temperature heat exchanger 70 may be connected to a high temperature regenerator connecting pipe 73 for guiding the rare solution having passed through the third flow path 71 to the rare solution supply pipe 220 of the high temperature regenerator 20.

The high temperature heat exchanger 70 may be connected to a low temperature regenerator connecting pipe 74 for guiding the intermediate solution passed through the fourth flow path 72 to the absorption liquid injection unit 33 of the low temperature regenerator 30.

2 is a perspective view showing a high temperature regenerator according to an embodiment of the present invention, Figure 3 is a partially cutaway perspective view showing the inside of the high temperature regenerator according to an embodiment of the present invention, Figure 4 is a line AA shown in FIG. It is a cross section.

The high temperature regenerator 20 includes an outer cell 200; An inner shell 210, a rare solution supply pipe 220, a burner 230 (see FIG. 1); And a plate heat exchanger 240 and an exhaust duct 250.

The outer shell 200 may form an appearance of the high temperature regenerator 20. The outer shell 200 may be composed of a combination of a plurality of members. The outer shell 220 may have a space 202 in which the absorbent liquid may be contained. The outer shell 220 may be mounted on at least one

support leg

203 and 204.

The outer shell 200 includes a shell body 205 having a space 202 formed therein, at least one

first side body

206 and 207 blocking one end of the shell body 205, and a shell body 205. It may include a second side body 208 to block the other end of the.

The shell body 205 may include a plurality of

shell body portions

205A and 205B having different heights at the top.

The first shell body portion 205A, which is one of the plurality of shell body portions, may be rounded at a lower portion thereof and open at an upper surface thereof.

The second shell body portion 205B, which is another one of the plurality of shell body portions, may have a higher height at an upper end than the first shell body portion 205A. The lower and upper portions of the second shell body portion 205B may be rounded.

The

first side bodies

206 and 207 may include a lower first side body 206 covering one end of the first shell body 205A, and an upper first covering the one end of the second shell body 205B. Side body 207;

The second side body 208 may be formed larger than each of the lower first side body 206 and the upper first side body 207.

The second side body 208 may cover the other end of the second shell body portion 205B opposite the

first side body

206 and 207.

The outer shell 200 may further include a top cover 209 disposed on the first shell body 205A. The top cover 209 may block between an upper portion of the lower first side body 206 and a lower portion of the upper first side body 207.

An exhaust duct accommodating space may be formed at the upper side of the upper first side body 207 and on the upper cover 209 to accommodate the exhaust duct 250.

The inner shell 210 may be disposed in the outer cell 200. The inner shell 210 may be disposed long in the horizontal direction in the outer shell 200. The inner shell 210 may have a passage 212 through which combustion gas passes. A space in which the absorbent liquid is filled may be formed between the outer surface of the inner shell 210 and the inner surface of the outer shell 200.

Inner shell 210 may be formed with a combustion gas inlet 213 through which combustion gas is introduced.

The inner cell 210 extends to protrude upward from a portion of the first inner shell portion 210A disposed below the plate heat exchanger 240 and a portion of the first inner shell portion 210A, so that the inner portion of the plate heat exchanger 240 It may include a second inner shell portion 210B disposed next to.

The first inner shell portion 210A may be disposed to be elongated in the horizontal direction at an inner lower portion of the outer shell 200.

The combustion gas inlet 213 may be formed at one side of the first inner shell portion 210A, and the second inner shell portion 210B may be upward from the opposite side of the combustion gas inlet 213 of the first inner shell portion 210A. It may protrude.

The bottom surface of the second inner shell portion 210B may be opened to communicate with the first inner shell portion 210A. The second inner shell portion 210B may have a shape in which front, rear, and top surfaces are blocked. In the second inner shell part 210B, an opening through which the combustion gas flows to the plate heat exchanger 230 may be formed on one surface of the second inner shell part 210B that is closer to the plate heat exchanger 230. In addition, the second inner shell portion 210B may have a shape in which an opposite surface of the surface on which the opening is formed is blocked.

The combustion gas generated by the burner 230 may be introduced into the first inner shell portion 210A through the combustion gas inlet 213, and the combustion gas may be introduced into the second inner shell portion 210A in the first inner shell portion 210A. After flowing into the inside of the 210B, it may be introduced into the plate heat exchanger (230).

The rare solution supply pipe 220 may supply a rare solution into the outer cell 200.

The rare solution supply pipe 220 may be disposed above the inner shell 200 to inject the rare solution into the outer shell 200.

At least a portion of the rare solution supply pipe 220 may be disposed above the plate heat exchanger 250, and the rare solution injected from the rare solution supply pipe 220 may fall toward the upper surface of the plate heat exchanger 250. . The rare solution supply pipe 220 may be disposed to extend from the upper side of the second inner shell portion 220 to the upper side of the plate heat exchanger 250. The rare solution supply pipe 220 may be formed with a plurality of absorption liquid supply holes. The plurality of absorption liquid supply holes may be spaced apart from each other in the longitudinal direction of the rare solution supply pipe 220.

The burner 230 (see FIG. 1) may generate combustion gas into the inner cell 210.

The plate heat exchanger 240 may be disposed between the outer cell 200 and the inner cell 210 to exchange heat between the rare solution and the combustion gas. The plate heat exchanger 240 may be disposed to be positioned above the first inner shell portion 210A of the inner shell 210.

The plate heat exchanger 240 may be disposed between the portion of the inner shell 210 and the exhaust duct 250. The plate heat exchanger 240 may be disposed to be positioned between the second inner shell portion 210B and the exhaust duct 250 in the horizontal direction.

The plate heat exchanger 240 may be formed with an inner passage through which the exhaust gas flowing from the inner shell 210 passes in the horizontal direction. In addition, the plate heat exchanger 240 may be formed such that the rare solution space in which the rare solution in the outer shell 200 is accommodated is opened in the vertical direction.

The exhaust duct 250 may guide the combustion gas passed through the plate heat exchanger 240. The exhaust duct 250 may be disposed to be next to the plate heat exchanger 240.

The exhaust duct 250 guides the combustion gas flowing out of the plate heat exchanger 240, and includes a lower exhaust duct unit 252 positioned next to the plate heat exchanger 240 and a lower exhaust duct unit 252. It may include a protruding upper exhaust duct portion 254.

The plate heat exchanger 240 may be disposed between the lower exhaust duct portion 252 and the second inner shell portion 220B, and the combustion gas flowing from the second inner shell portion 210B to the plate heat exchanger 240 may be After passing through the plate heat exchanger 240 may flow to the lower exhaust duct 252, the combustion gas flowing into the lower exhaust duct 252 may be exhausted to the outside through the upper exhaust duct 254. have.

The exhaust duct 250 may be disposed above the top cover 209, and the high temperature regenerator may be compact.

The lower exhaust duct part 252 may be provided with an openable duct door 256. The duct door 256 may be disposed to rotate or slide in the lower exhaust duct 252, and the inside of the lower exhaust duct 252 may be opened when the duct door 256 is opened.

The duct door 256 may be disposed to face one surface of the plate heat exchanger 240 in the lower exhaust duct 252. When the duct door 256 is opened, the plate heat exchanger 240 can be seen from the outside through the lower exhaust duct 252.

5 is a perspective view of a high temperature regenerator according to an embodiment of the present invention, FIG. 6 is an exploded perspective view of the high temperature regenerator shown in FIG. 5, and FIG. 7 is an exploded view of a plurality of unit heat transfer units shown in FIG. 8 is a perspective view before the pair of heat transfer bodies shown in FIG. 7 are joined.

The plate heat exchanger 240 includes a plurality of unit heat transfer units 301 to 308 stacked in a direction Y orthogonal to the flow direction X of the combustion gas.

Each of the plurality of unit heat transfer units 301 to 308 may have an inner passage 340 through which combustion gas passes.

The inner passage 340 may be open in the horizontal direction to each of the unit heat transfer units (301 to 308).

Since the plate heat exchanger 240 is configured by combining a plurality of unit heat transfer units having an inner passage, the plate heat exchanger 240 may include a plurality of inner passages 340.

The combustion gas flowing from the inner shell 210 to the plate heat exchanger 240 may pass through the plurality of inner passages 340 while being heat-exchanged with each of the plurality of unit heat transfer units 301 to 308.

Each of the plurality of unit heat transfer units 301 to 308 may have an inner passage 340 through which combustion gas passes between the pair of

heat transfer bodies

320 and 330.

The inner passage 340 may be formed long in the horizontal direction between the pair of

heat transfer bodies

320 and 330.

The pair of

heat transfer bodies

320 and 330 may be connected to one end 310 and the other end 312. The unit heat transfer units 301 to 308 may be prepared by molding a pair of

heat transfer bodies

320 and 330 into one body, as shown in FIG. 8, and as shown in FIGS. 6 and 7. The pair of

heat transfer bodies

320 and 330 may be bent to face each other.

As shown in FIG. 8, the other ends 312 that are spaced apart from each other may be in contact with each other, as shown in FIGS. 6 and 7, and the pair of

heat transfer bodies

320 and 330 in which the other ends 312 are in contact with each other. Inner passage 340 may be formed between the ().

The pair of

heat transfer bodies

320 and 330 may be manufactured such that one end 310 is connected by a folding line, and the other end 312 is in a separated state, as shown in FIG. As shown in FIG. 7, they may be contacted.

Each of the pair of

heat transfer bodies

320 and 330 constituting the unit heat transfer unit includes a heat transfer plate portion 324 having an uneven portion 323 formed therein; One end connecting portion 326 is bent at one end of the heat transfer plate 324 and connected to the other heat transfer body, and the other end junction 328 is bent at the other end of the heat transfer plate 324 and bonded to the other heat transfer body.

The uneven portion 323 may be slidably contacted with the heat transfer plate portion 324 of another adjacent heat transfer body.

The inner passage 340 may be formed between the connection portion 326 and the other end junction 328.

The other end junctions 328 of each of the pair of

heat transfer bodies

320 and 330 may be bonded to each other by a method such as brazing bonding.

In the plate heat exchanger 240, a plurality of unit heat transfer units 301 to 308 are stacked, the plurality of unit heat transfer units 301 to 308 may be bonded to each other.

Here, the stacking of the plurality of unit heat transfer units 301 to 308 may mean that the plurality of unit heat transfer units 301 to 308 are arranged in a horizontal direction, and the plurality of unit heat transfer units 301 to 308 may be adjacent to each other. The unit may be in contact with the heat transfer unit in the horizontal direction.

heat transfer bodies

320 and 330.

The plurality of unit heat transfer units 301 to 308 may be stacked in a direction orthogonal to the opening direction of the inner passage 340. When the inner passage 340 is opened in the front-rear direction, the plurality of unit heat transfer units 301 to 308 may be disposed to be in contact with the other unit heat transfer units in the left-right direction. On the contrary, when the inner passage 340 is opened in the left and right directions, the plurality of unit heat transfer units 301 to 308 may be disposed to contact the other unit heat transfer units in the front-rear direction.

Each of the plurality of unit heat transfer units 301 to 308 may be joined to be in contact with another adjacent unit heat transfer unit, and the plurality of unit heat transfer units 301 to 308 may be spaced apart from each other in the outer shell 200. It can be firmly supported.

The plurality of unit heat transfer units 301 to 308 may be integrated with other adjacent unit heat transfer units so that the whole of the plurality of unit heat transfer units 301 to 308 may be integrated, and the inside of the outer shell 200 in an integrated state. Can be mounted.

In more detail with respect to the bonding of the plurality of unit heat transfer unit (301 to 308), one of the plurality of unit heat transfer unit (301 to 308) between the pair of other unit heat transfer unit (301) (303) The unit heat transfer unit 302 may be joined to each of a pair of adjacent unit

heat transfer units

301 and 303.

The outermost unit heat transfer unit of the plurality of unit heat transfer units 301 to 308 may be joined to one other unit heat transfer unit, and the plurality of unit heat transfer units located between the outermost unit heat transfer units may be adjacent to a pair of unit heat transfer units. Can be joined with the unit respectively.

As illustrated in FIG. 6, the

heat transfer bodies

320 and 330 may be formed with a bonding body 322 to be bonded to another heat transfer unit adjacent to each other.

The bonding body 322 may be formed in each of the plurality of unit heat transfer units 301 to 308.

A rare solution space 350 may be formed between the adjacent unit heat transfer units of the plurality of unit heat transfer units 301 to 308 to accommodate the rare solution inside the outer cell 200. The rare solution space 350 may be opened in the vertical direction Z between unit heat transfer units adjacent to each other.

Bonding body 322 is a protrusion 322A protruding toward the heat transfer plate portion of the other heat transfer unit adjacent to the heat transfer plate portion, and the outer junction portion 322B is bent in the opposite direction of the solution space 350 in the protrusion 322A and bonded It may include.

The outer junction 322B of each of the plurality of unit heat transfer units 301 to 308 may be joined by a method such as brazing bonding.

The rare solution space 350 may be formed by heat transfer bodies facing each other of unit heat transfer units adjacent to each other, and a bonding body 322 protruding from the heat transfer bodies.

The high temperature regenerator 20 may further include at least one unit heat

transfer unit supporter

351, 352, 353, and 354 fitted to the plurality of unit heat transfer units 301 to 308.

The high temperature regenerator may include a plurality of unit heat

transfer unit supporters

351, 352, 353, and 354, and each of the plurality of unit heat

transfer unit supporters

351, 352, 353, and 354 may include a plurality of unit heat transfer units. It may be fitted with each of the heat transfer units (301 to 308). The unit heat

transfer unit supporters

351, 352, 353, and 354 are preferably fitted at positions that do not disturb the flow of the combustion gas or the absorbent liquid.

In the unit

heat transfer units

351, 352, 353, and 354, fitting grooves 355 into which a part of the bonding body 322 formed in each of the unit heat transfer units 301 to 308 are inserted may be inserted.

When the unit heat

transfer unit supporters

351, 352, 353, and 354 are fitted with the plurality of unit heat transfer units 301 to 308, the plurality of unit heat transfer units 301 to 308 are the unit heat transfer unit supporters 351. (352) (353) 354 can be fixed to each other.

The plurality of unit heat

transfer unit supporters

351, 352, 353, and 354 may include a pair of

upper supporters

351 and 352 fitted to upper sides of the plurality of unit heat transfer units 301 to 308. A pair of

lower supporters

353 and 354 fitted to both lower sides of the unit heat transfer units 301 to 308 may be included.

The height of each of the

upper supporters

351 and 352 and the

lower supporters

353 and 354 is less than 1/2 of the height of the unit heat transfer units 301 to 308.

The high temperature regenerator may further include a pair of sealing

members

360 and 362 in close contact with the outermost unit heat transfer unit among the plurality of unit heat transfer units 301 to 308. The plurality of unit heat transfer units 301 to 308 may be in close contact with each other in the stacking direction by a pair of sealing

members

360 and 362.

Each of the pair of sealing

members

360 and 362 may have a avoidance hole 363 that avoids the uneven portion 323 formed in the outermost unit heat transfer unit.

Meanwhile, at least a side body may be provided beside the plate heat exchanger 240, and the side gas may include a combustion gas hole through which the combustion gas passing through the inner passage 340 of the unit heat transfer units 301 to 308 passes. 207a) may be formed.

The upper first side body 207 may be disposed in the plate heat exchanger 240, and the combustion gas passing through the inner passage 340 of the unit heat transfer units 301 to 308 may be disposed in the upper first side body 207. The combustion gas hole 207a flowing into the exhaust duct 250 may be formed.

The junction body 322 protruding to each of the plurality of unit heat transfer units 301 to 308 may be inserted into the combustion gas hole 207a. The junction body 322 may be fitted in contact with the side body 207 on which the combustion gas hole 207a is formed.

When the height of the bonding body 322 is the same as the height of the combustion gas hole 207a, the bonding body 322 may be inserted into the combustion gas hole 207a, each of the upper and lower ends of the bonding body 322 is upper The first side body 207 may be in contact with each other, and each of the plurality of unit heat transfer units 301 to 308 may be inserted into and fixed to the upper first side body 207.

In addition, reference numeral 260 illustrated in FIG. 5 is an inner side body positioned opposite to the upper first side body 207.

The inner side body 260 may be provided with a combustion gas hole 260a through which the combustion gas of the inner shell 210 flows to the inner passage 340 of the unit heat transfer units 301 to 308. The inner side body 260 may be fixed to the inner shell 210 shown in FIG. 3.

On the other hand, the high temperature regenerator 20 of the present embodiment may be capable of chemical cleaning of the plate heat exchanger (240).

The worker may inject chemical into the exhaust duct 250 after opening the duct door 256.

The chemical may be introduced into the inner passage 340 of the plate heat exchanger 240 through the exhaust duct 250, and a pair of

heat transfer bodies

320 and 330 facing each other while passing through the inner passage 340. Foreign matter attached to each surface may be removed and may flow to the inner shell 210 together with the foreign matter.

Foreign substances and chemicals flowing into the inner shell 210 may flow out through the combustion gas inlet 213 in the inner shell 210.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims

An outer cell;

An inner cell disposed inside the outer cell;

A rare solution supply pipe for supplying a rare solution into the outer cell;

A burner for generating combustion gas into the inner cell;

A plate heat exchanger disposed between the outer cell and the inner cell to exchange heat between the rare solution and the combustion gas;

An exhaust duct for guiding the combustion gas passing through the plate heat exchanger,

The plate heat exchanger

It includes a plurality of unit heat transfer units stacked in a direction orthogonal to the flow direction of the combustion gas,

The unit heat transfer unit has an inner passage through which the combustion gas passes between a pair of heat transfer bodies, one end of which is connected and the other end of which is formed, to be elongated in a horizontal direction,

The heat transfer body is formed with a junction body bonded to the other unit heat transfer unit,

A high temperature regenerator in which a rare solution space in which the rare solution is accommodated in the outer cell is opened between the unit heat transfer units adjacent to each other among the plurality of unit heat transfer units.
The method of claim 1,

Each of the pair of heat transfer bodies includes a heat transfer plate portion;

A one end connection portion bent at one end of the heat transfer plate portion and connected to another heat transfer body;

And the other end is bent at the other end of the heat transfer plate and bonded to the other heat transfer body,

And an inner passage formed between the one end connection portion and the other end connection portion.
The method of claim 2,

The heat transfer plate portion is a high temperature regenerator having a concave-convex portion slidably contacting the heat transfer plate of the other heat transfer body.
The method of claim 3, wherein

It includes a sealing member in close contact with the outermost unit heat transfer unit of the plurality of unit heat transfer unit,

The sealing member has a high temperature regenerator formed with a avoiding hole to avoid the uneven portion formed in the outermost unit heat transfer unit.
The method of claim 2,

The joint body is

A protrusion protruding toward the heat transfer plate portion of another heat transfer unit adjacent to the heat transfer plate portion,

A high temperature regenerator including an outer joint that protrudes from the protrusion and is bonded to another unit heat transfer unit adjacent to the protrusion.
The method of claim 5, wherein

The outer junction portion is bent in the opposite direction of the rare solution space in the projecting portion is a high temperature regenerator.
The method of claim 1,

The rare solution space is a high temperature regenerator formed by the heat transfer body facing each other of the adjacent unit heat transfer unit and the junction body protruding from the heat transfer body.
The method of claim 1,

A pair of upper supporters fitted to both upper sides of the plurality of unit heat transfer units;

A high temperature regenerator comprising a pair of lower supporters fitted to both lower sides of the plurality of unit heat transfer units.
The method of claim 1,

Further comprising a side body disposed next to the plate heat exchanger,

And the side body has a combustion gas hole through which the combustion gas passing through the inner passage passes to flow into the exhaust duct.
The method of claim 9,

The junction body is a high temperature regenerator inserted into the combustion gas hole.
The method of claim 9,

The junction body is a high temperature regenerator having a height in contact with the side body.
The method of claim 1,

The exhaust duct is a lower exhaust duct portion located next to the plate heat exchanger,

An upper exhaust duct portion protruding from the lower exhaust duct portion,

The lower exhaust duct part can be opened and closed and a high temperature regenerator having a duct door facing one surface of the plate heat exchanger.
The method of claim 12,

And the inner passage is opened toward the duct door.
The method of claim 1,

The outer shell may include a shell body having a first shell body portion rounded at a lower portion thereof and an upper surface thereof open and a second shell body portion having a higher height than an upper portion of the first shell body portion;

A lower first side body covering one end of the first shell body part;

An upper first side body covering one end of the second rest body part;

A second side body larger than each of the lower first side body and the upper first side body and covering the other end of the second shell body portion on an opposite side of the lower first side body and the upper first side body;

A top cover disposed on an upper portion of the first shell body portion to close an upper portion of the lower first side body and a lower portion of the upper first side body,

The exhaust duct is a high temperature regenerator disposed above the top cover.
The method of claim 14,

And a combustion gas hole configured to guide the combustion gas passing through the inner passage into the exhaust duct in the upper first side body.