JP2005221196A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger, having a structure for improving the maintainability of the heat exchanger to easily remove a remaining fluid to be treated in washing a passage of the fluid to be treated. <P>SOLUTION: This heat exchanger includes: a first tubular body where a heat exchange medium flows through the interior thereof; a second tubular body provided in the inside of the first tubular body to permit the fluid to be treated to flow through the interior thereof; an element inserted in the second tubular body, which has a structure in which the fluid to be treated flows through the inside of the second tubular body to stir the fluid to be treated; a first support plate supporting the end part of the second tubular body; and a second support plate supporting the element and provided with a passing hole for passing the fluid to be treated. A support forming a gap is provided between the first support plate and the second support plate. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a heat exchanger, and more particularly, to a heat exchanger that performs heat exchange of a fluid to be treated with high viscosity. In a heat exchanger that cools a fluid to be treated, for example, when the viscosity of the fluid to be treated is high, the viscosity of the medium to be treated may increase during cooling, and may adhere to the heat exchanger. .

  Therefore, a heat exchanger that inserts an element that has an effect of stirring the fluid to be treated by flowing the fluid to be treated into the flow path of the fluid to be treated to prevent the fluid to be treated from sticking when cooled Has been proposed.

  FIG. 1 schematically shows a cross-sectional view of a heat exchanger 100 that cools a fluid to be treated, in which an element having a structure in which the fluid to be treated is agitated is inserted into the flow path of the fluid to be treated. is there.

  Referring to FIG. 1, the heat exchanger 100 generally includes an outer tubular body 101 through which a heat exchange medium flows. Inside the outer tubular body 101 through which the heat exchange medium flows, a fluid to be treated is disposed therein. A plurality of inner tubular bodies 103 that flow through are installed.

  When the viscosity of the fluid to be treated is high, the fluid to be treated may be fixed inside the inner tubular body 103. Even when the viscosity of the fluid to be treated is not high, the fluid to be treated may be solidified by supercooling in the vicinity of the flow path wall inside the inner tubular body 103. For this reason, the element 104 extended in the flow direction of the fluid to be treated is inserted into the inner tubular body 103. For example, the element 104 has a spiral shape extending in the flow direction of the fluid to be processed inside the inner tubular body 103, and when the fluid to be processed flows along the element 104, the conversion of the fluid to be processed is performed. Thus, the fluid to be treated is prevented from being agitated by the shearing force to solidify the fluid to be treated, and therefore the heat exchange capability of the heat exchanger is prevented from being lowered.

  A heat exchange medium is introduced into the outer tubular body 101 from the heat exchange medium introduction port 110B and flows so as to be discharged from the heat exchange medium discharge port 110A. It is possible to cool. In addition, the fluid to be treated can be heated by changing the temperature of the heat exchange medium.

  The first end of the inner tubular body 103 is supported, for example, by being inserted into a plurality of insertion holes of the substantially disc-shaped support plate 105A, and is fixed by welding, for example. The support plate 105A is installed at the first end portion of the outer tubular body 101 so as to cover the flow path of the heat exchange medium, and the outer tubular body 101 is surrounded by, for example, welding or screwing. Fixed to.

  Furthermore, a substantially disk-shaped support plate 106A is installed so as to contact the support plate 105A. The support plate 106A is formed with a passage hole 107A serving as a flow path for the fluid to be processed. A plurality of the passage holes 107A are provided in the flow path of the fluid to be processed, that is, at positions corresponding to the inner tubular body 103. Yes.

  The passage hole 107A is smaller than the inner diameter of the inner tubular body 103 and has a size that the element 104 cannot pass through. Therefore, the support plate 106A supports the element 104, and the element 104 is in the inner tubular shape. This prevents the body 103 from falling off.

  For example, since the heat exchanger 100 is used in a state where the outer tubular body 101 and the inner tubular body 103 are erected with respect to the installation surface and the support plate 105A is down, the support plate 106A is provided. The element 104 is supported by the support plate 106A, and the element 104 is prevented from falling off the inner tubular body 103.

  In addition, an end pipe 102A that communicates with a flow path of the fluid to be processed of the plurality of inner tubular bodies 103 via the passage holes 107A is provided at the first end of the outer tubular body 101. The cross-sectional area is reduced in the direction away from the first end. A seal ring 109A is inserted into the engagement surface between the outer tubular body 101 and the end pipe 102A for sealing.

  The support plate 106A is structured to be held by a holding component 108A installed on the inner wall of the end pipe 102A.

  Furthermore, a structure similar to that of the first end portion is formed at the second end portion of the outer tubular body 101 facing the first end portion. That is, at the second end portion, the support plate 105B and the support plate 106B have the same structure as the support plate 105A, the support plate 106A, the passage hole 107A, the holding component 108A, the end pipe 102A, and the seal ring 109A. A passage hole 107B, a holding part 108B, an end pipe 102B, and a seal ring 109B are provided.

When the fluid to be treated is cooled, for example, by the heat exchanger 100, the fluid to be treated introduced from the end pipe 102A is introduced into the inner tubular body 103 from the passage hole 107A, and It is cooled by a heat exchange medium flowing inside the outer tubular body 101, and flows from the passage hole 107B to the end pipe 102B.
Japanese Patent Laid-Open No. 10-309451

  However, when considering the maintenance of the heat exchanger 100, for example, when cleaning is performed, there is a portion where it becomes difficult to clean the fluid to be processed as described below, and there is a problem that the maintainability is not sufficient.

  FIG. 2 is an enlarged view of part a of the heat exchanger 100 shown in FIG. However, in the figure, the same reference numerals are given to the parts described above, and the description will be omitted.

  Referring to FIG. 2, for example, in the region D where the support plate 105A and the support plate 106A are in contact with each other, there is a problem that cleaning of the fluid to be processed becomes insufficient. The support plate 105A and the support plate 106A are installed so as to engage with each other, but actually, a slight gap is generated in the region D where the support plate 105A and the support plate 106A are in contact with each other, and the gap is completely removed. It is difficult to lose. Therefore, the fluid to be processed enters the region D.

  Therefore, for example, when performing maintenance of the heat exchanger or replacement of the fluid to be processed, when cleaning the fluid to be processed, or when the cleaning liquid is caused to flow through the flow path of the fluid to be processed, the object retained in the region D is retained. It has become difficult to completely remove the processing fluid, resulting in maintenance problems such as time-consuming cleaning or insufficient cleaning.

  Therefore, an object of the present invention is to provide a new and useful heat exchanger that solves the above problems.

  A specific problem of the present invention is to improve the maintainability of the heat exchanger, and a heat exchanger having a structure that facilitates removal of the remaining fluid to be processed in cleaning the flow path of the fluid to be processed. Is to provide.

  The present invention relates to the above-described problem, a first tubular body through which a heat exchange medium flows, a second tubular body provided inside the first tubular body, through which a fluid to be treated flows, An element inserted into the second tubular body; a first support plate for supporting an end of the second tubular body; and the element provided to face the first support plate. And a second support plate having a passage hole through which the fluid to be treated passes, wherein the support forms a gap between the first support plate and the second support plate. It solves with the heat exchanger characterized by providing.

  According to the present invention, when the fluid to be processed is cleaned by providing a support body that forms a gap between the first support plate and the second support plate where the fluid to be processed exists. It becomes easy to clean the gap, and the effect of improving the cleaning efficiency and improving the maintainability of the heat exchanger is achieved.

  The gap is preferably 5 mm or more and 10 mm or less, and by setting the gap to 5 mm or more, the cleaning liquid is spread over the gap, so that the cleaning efficiency is good, and the gap is 10 mm. By making it below, the fall of the efficiency of heat exchange is prevented.

  Further, if the support is structured to be installed on the surface of the second support plate on the side facing the first support plate, the support can be easily installed, and the tip portion is substantially omitted. The hemisphere is preferable because the area of the portion where the fluid to be treated stays between the support and the first support plate is minimized and the cleaning efficiency of the fluid to be treated is good.

  In addition, when the support is structured on the surface of the first support plate facing the second support plate, the support can be easily installed, and the tip portion is further provided. A substantially hemispherical shape is preferable because the area of the portion where the fluid to be treated stays between the support and the second support plate is minimized and the cleaning efficiency of the fluid to be treated is good.

  Further, if the passage hole has a shape that increases in the direction in which the fluid to be treated flows, the influence of the fluid to be treated is reduced, and the fluid to be treated and the components of the fluid to be treated are removed during cleaning. The remaining amount is reduced, which facilitates cleaning of the fluid to be processed.

  Further, an end pipe that communicates with the inside of the plurality of second tubular bodies and through which the fluid to be treated flows is installed at an end of the first tubular body, and the second wall is provided on the inner wall surface of the end pipe. When a holding component for holding the supporting plate is installed and the second supporting plate is held by the protrusion of the holding component, the fluid to be processed is placed between the holding component and the second supporting plate. The area of the staying portion is minimized and the cleaning efficiency of the fluid to be processed is improved, which is preferable.

  Furthermore, a third support plate that faces the end of the second tubular body and supports another end of the second tubular body, and is provided so as to face the third support plate. A fourth support plate having a passage hole through which the fluid to be treated passes, and another support member that forms a gap between the third support plate and the fourth support plate are provided. In addition, since a gap is also formed between the third support plate and the fourth support plate where the fluid to be processed exists, it becomes easy to clean the gap when cleaning the fluid to be processed. There is an effect that the efficiency of cleaning is improved and the maintainability of the heat exchanger is improved.

  In addition, a supply source of cleaning liquid for cleaning the inside of the second tubular body, a first pipe connecting the supply source and the first side of the second tubular body, the supply source, and the second A second pipe connecting a second side opposite to the first side of the tubular body, the cleaning liquid from the first side of the second tubular body to the second side, and And a control device for controlling the flow from the second side to the first side to perform cleaning in which the cleaning liquid flows in a direction in which the fluid to be processed flows and in a direction opposite to the direction. This makes it possible to efficiently wash the remaining fluid to be treated, and improves the efficiency of washing the heat exchanger.

  ADVANTAGE OF THE INVENTION According to this invention, the maintainability of a heat exchanger improves and it becomes possible to make easy removal of the to-be-processed fluid remaining in the washing | cleaning of the flow path of a to-be-processed fluid.

  Next, embodiments of the present invention will be described below with reference to the drawings.

  FIG. 3 is a cross-sectional view of a heat exchanger 10 for cooling a fluid to be processed, in which an element having a structure in which the fluid to be processed is agitated is inserted into a flow path of the fluid to be processed according to the first embodiment of the present invention. Is schematically shown.

  Referring to FIG. 3, the outline of the heat exchanger 10 includes an outer tubular body 11 through which a heat exchange medium flows, and a fluid to be treated is placed inside the outer tubular body 11 through which the heat exchange medium flows. A plurality of internal tubular bodies 13 that flow through are installed.

  When the viscosity of the fluid to be treated is high, the fluid to be treated may be fixed inside the inner tubular body 13. Even when the viscosity of the fluid to be treated is not high, the fluid to be treated may be solidified near the flow path wall inside the inner tubular body 13 due to supercooling. For this reason, the element 14 extended in the direction in which the fluid to be treated flows is inserted into the inner tubular body 13. For example, the element 14 has a spiral shape extending in the flow direction of the fluid to be treated inside the inner tubular body 13, and the fluid to be treated is converted when the fluid to be treated flows along the element 14. Thus, the fluid to be treated is prevented from being agitated by the shearing force to solidify the fluid to be treated, and therefore the heat exchange capability of the heat exchanger is prevented from being lowered.

  A heat exchange medium is introduced into the outer tubular body 11 from the heat exchange medium introduction port 20B and flows so as to be discharged from the heat exchange medium discharge port 20A. It is possible to cool. Moreover, it is also possible to heat a to-be-processed fluid by changing the temperature of the said heat exchange medium, and the connection of the inlet and outlet of a heat exchange medium may be reversed.

  The first end of the inner tubular body 13 is supported, for example, by being inserted into a plurality of insertion holes of the substantially disc-shaped support plate 15A, and is fixed by welding, for example. The support plate 15A is installed at the first end of the outer tubular body 11 so as to cover the flow path of the heat exchange medium, and the outer tubular body 11 is surrounded by, for example, welding or screwing. Fixed to.

  Further, a substantially disc-shaped support plate 16A is provided so as to face the support plate 15A. The support plate 16A is formed with a passage hole 17A serving as a flow path for the fluid to be treated, and a plurality of the passage holes 17A are provided in the flow path of the fluid to be treated, that is, at positions corresponding to the inner tubular body 13. Yes.

  The passage hole 17A is smaller than the inner diameter of the outer tubular body 13, and the element 14 cannot pass therethrough. For this reason, the support plate 16A supports the element 14, and the element 14 is in the inner tubular shape. It is prevented from falling off the body 13.

  For example, since the heat exchanger 10 is used in a state where the outer tubular body 11 and the inner tubular body 13 are erected with respect to the installation surface and the support plate 15A is down, the support plate 16A is provided. The element 14 is supported by the support plate 16A, and the element 14 is prevented from falling off the inner tubular body 13.

  The first end of the outer tubular body 11 has an end pipe 12A that communicates with a flow path of the fluid to be treated of the plurality of inner tubular bodies 13 through the passage hole 17A. The cross-sectional area is reduced from the end of one to the direction away from the first end. A seal ring 19A is inserted into the engagement surface between the outer tubular body 11 and the end pipe 12A for sealing.

  Further, the support plate 16A is structured to be held by a holding component 18A installed on the inner wall of the end pipe 12A.

  Furthermore, the same structure as the first end portion is formed at the second end portion of the tubular body 11 that faces the first end portion. That is, the support plate 15B and the support plate 16B having the same structure as the support plate 15A, the support plate 16A, the passage hole 17A, the holding component 18A, the end pipe 12A, and the seal ring 19A are provided at the second end. A passage hole 17B, a holding part 18B, an end pipe 12B, and a seal ring 19B are provided.

  When the fluid to be treated is cooled by the heat exchanger 10, for example, the fluid to be treated introduced from the end pipe 12 </ b> A is introduced into the tubular body 13 from the passage hole 17 </ b> A. It is cooled by a heat exchange medium flowing inside the tubular body 11 and flows from the passage hole 17B to the end pipe 12B.

  In the case of the heat exchanger 10 according to the present embodiment, by providing a support 21A that forms a gap between the support plate 15A and the support plate 16A, the gap is cleaned when the fluid to be treated is cleaned. As compared with the conventional heat exchanger, the cleaning efficiency is improved and the maintainability of the heat exchanger is improved.

  FIG. 4 is an enlarged view of part A of the heat exchanger 10 shown in FIG. However, in the figure, the same reference numerals are given to the parts described above, and the description will be omitted.

  Referring to FIG. 4, in the case of the heat exchanger 10 according to the present embodiment, a support 21A is installed between the support plate 15A and the support plate 16A, for example, on the support plate 16A. For this reason, a gap CL is formed between the support plate 15A and the support plate 16A.

  Therefore, when cleaning the flow path of the fluid to be processed, the fluid to be processed does not stay between the support plate 15A and the support plate 16A, and the support plate 15A and the support are supported by the cleaning liquid. It becomes easy to clean the fluid to be processed between the plates 16A. For this reason, the cleaning efficiency is improved and the maintainability is improved.

  In addition, the size of the gap CL, that is, the distance between the support plate 15A and the support plate 16A is, for example, 5 mm in this embodiment, but if it is 5 mm or more, the cleaning liquid can easily enter and is treated by the cleaning liquid. The effect of cleaning the fluid is increased, which is preferable.

  In addition, if the CL of the gap exceeds 10 mm, the efficiency of heat exchange of the fluid to be processed by the heat exchange medium decreases. Therefore, in order to maintain the efficiency of the heat exchange, the size of the gap CL Is preferably 10 mm or less.

  In this embodiment, for example, the inner tubular body 13 has an inner diameter of 753 mm, the inner tubular body 13 has a length of 1500 mm, and the outer tubular body has an inner diameter of 151 mm. 109 passage holes 17A are provided.

  In addition, the support 21A is formed in a shape such as a hemispherical shape in which the tip portion, that is, the area in contact with the support plate 15A is small. Therefore, the area where the support plate 15A and the support 21A come into contact with each other is small, and the amount of the process fluid remaining between the support 21A and the support plate 15A when the flow path of the process fluid is cleaned. Therefore, the cleaning efficiency is good, which is preferable.

  In addition, the shape of the tip of the support 21A is not limited to a hemispherical shape. For example, if the area where the support 21A and the support plate 15A are in contact with each other is reduced, such as a conical shape, The same effects as when the tip of the support 21A is formed in a hemispherical shape are obtained.

  Further, the support 21A can be formed at a place other than on the support plate 16A, and if it is formed so as to be inserted between the support plate 15A and the support plate 16A as necessary. Good.

  For example, FIG. 5 shows an example in which the support 21a is formed on the surface of the support plate 15A on the side facing the support plate 16A. However, in the figure, the same reference numerals are given to the parts described above, and the description will be omitted. In the case shown in FIG. 5 as well, the support 21a is formed in a shape such as a hemispherical shape that reduces the area of the tip, that is, the portion in contact with the support plate 16A. Therefore, the area where the support 16A and the support 21a come into contact with each other is small, and when the flow path of the fluid to be processed is washed, the amount of the fluid to be processed remaining between the support 21a and the support plate 16A As a result, the cleaning efficiency is improved.

  Further, the first end portion is formed on the side of the second end portion of the inner tubular body 13 facing the first end portion of the inner tubular body 13 where the support plate 15A is formed. A similar structure is formed.

  That is, a support plate 15B that supports the second end portion of the inner tubular body 13, and a support plate 16B that is provided so as to face the support plate 15B and has a passage hole 17B through which the fluid to be processed passes. A support body 21B that forms a gap between the support plate 15B and the support plate 16B is formed.

  Therefore, the support 21B on the second end side has the same effect as the support 21A on the first end side. That is, when cleaning the flow path of the fluid to be processed, the fluid to be processed does not stay between the support plate 15B and the support plate 16B, and the support plate 15B and the support plate are washed by the cleaning liquid. It becomes easy to wash the fluid to be processed between 16B. For this reason, the cleaning efficiency is improved and the maintainability is improved.

  Further, the passage hole 17A formed in the support plate 16A can be used after being deformed as shown in FIGS. 6 (A) and 6 (B).

  6A and 6B are cross-sectional views in which a part of a modification of the support plate 16A is enlarged. However, in the figure, the same reference numerals are given to the parts described above, and the description will be omitted.

  Referring to FIG. 6 (A), in the case shown in the figure, for example, the passage hole 17C, which is a flow path through which the fluid to be treated passes, becomes smaller in the direction F in which the fluid to be treated flows, for example, It is formed in a tapered shape such that the passage hole becomes smaller along the flow direction F of the processing body. Therefore, the pressure loss of the fluid to be treated can be reduced, the influence of the fluid to be treated is reduced, and the amount of the fluid to be treated and the components of the fluid to be treated remaining during cleaning is reduced. There is an effect that the fluid to be processed can be easily cleaned.

  For example, there may be a region between the adjacent through holes where the fluid to be treated is likely to stay, the flow velocity of the fluid to be treated is reduced, and the flow is vortexed. In this case, the viscosity of the fluid to be treated increases, or components in the fluid to be treated are deposited, so that they become a stagnant material or a residue and adhere to, for example, the support plate 16A, making it difficult to clean. There was a case.

  Therefore, by changing the shape of the passage hole so that the fluid to be processed becomes smaller in the direction in which the fluid to be processed flows, the influence of the fluid to be processed is reduced, and the fluid to be processed and the fluid to be processed at the time of cleaning are reduced. The amount of the remaining component is reduced, so that the fluid to be treated can be easily cleaned.

  Further, the shape of the passage hole is not limited to the tapered shape shown in FIG. 6A, and may be a shape having a curved surface as shown in FIG. 6B, for example.

  Referring to FIG. 6B, in the case of the passage hole 17D shown in this figure, the vicinity of the outlet of the fluid to be treated of the passage hole 17D is formed in a gently curved shape so that the passage hole becomes small. In the case shown in this figure, the effect that the fluid to be treated stays is further reduced as compared with the case shown in FIG.

  Also in the case of the support plate 16B, similarly to the case of the support plate 16A, the passage hole 17B that is a flow path through which the fluid to be processed passes is formed so as to become smaller in the direction in which the fluid to be processed flows. Then, the pressure loss of the fluid to be treated can be reduced, the influence of the fluid to be treated is reduced, and the amount of the fluid to be treated and the components of the fluid to be treated remaining during cleaning is reduced. As a result, the effect of facilitating the cleaning of the fluid to be processed is achieved.

  6 (C) and 6 (D) show the shapes of the passage holes 17E and 17F formed in the support plate 16B, which are the same as those shown in FIGS. 6 (A) and 6 (B), respectively. The effect of.

  Further, as shown in FIG. 4, the support plate 16A is installed such that the peripheral portion thereof is held by the holding component 18A installed on the inner wall of the end pipe 12A. In this case, as in the case of the support 21A, the contact area between the holding component 18A and the support plate 16A is preferably small.

  FIG. 7 shows a perspective view of the holding component 18A. Referring to FIG. 7, the holding component 18A has a protrusion 18a, and the support plate 16A is held by the protrusion 18a. Therefore, the holding component 18a holds the support plate 16A at the tip 18b of the projection 18A, and the contact area between the holding component 18A and the support plate 16A can be reduced.

  Therefore, when cleaning the flow path of the fluid to be processed, the amount of the fluid to be processed remaining between the holding component 18A and the support plate 16A is reduced, so that the cleaning efficiency is improved.

  Next, FIG. 8 schematically shows an overall view of the heat exchanger 10 including piping and a connected control device. However, in the figure, the same reference numerals are given to the parts described above, and the description will be omitted. Further, illustration of an internal tubular body, a support plate, an element and the like which are components inside the external tubular body 11 is omitted.

  Referring to FIG. 8, a pipe 30B is connected to the heat exchange medium inlet 20B, and a pipe 30A is connected to the heat exchange medium outlet 20A. The pipes 30A and 30B are heat exchange media, respectively. The heat exchange medium is connected to the supply device 30 and flows through the heat exchange supply device 30 so as to circulate through the outer tubular body 11.

  Also, pipes 32A and 32B are connected to the end pipes 12A and 12B, respectively. A processing fluid supply source 33A is connected to the piping 32A via a valve 34a, and a processing fluid requiring heat exchange is supplied to the end piping 12A via the piping 32A. . The pipe 32B is connected to a processed fluid holding portion 33B via a valve 34b, and has a structure for holding the processed fluid that has been subjected to heat exchange, for example, cooling.

  In the case of the heat exchanger 10 according to the present embodiment, the cleaning liquid supply source 31 is further connected to the end pipes 12A and 12B. The cleaning liquid supply source 31 is connected to the end pipe 12A by a pipe 31A provided with a valve 31a, and is connected to the end pipe 12B by a pipe 31B provided with a valve 31b.

  In addition, in order to discharge the cleaning liquid used for cleaning, the pipe 32A is provided with a discharge pipe 36A having a valve 35a, and the pipe 32B is similarly provided with a discharge pipe 36B having a valve 34b. Is connected.

  When the heat exchanger 10 according to this embodiment performs heat exchange of the fluid to be processed, for example, cooling, the valves 34a and 34b are opened. Therefore, the fluid to be processed is supplied from the fluid supply source 33A to the internal tubular body 13 (not shown in the figure) via the pipe 32A. The fluid to be treated flows through the inner tubular body 13 in the direction from the end pipe 12A toward the end pipe 12B, the X1 direction in the figure, and is cooled, and the end pipe 12B and the pipe 32B are cooled. And stored in the fluid holding part 33B.

  In this case, the flow of the fluid to be processed is formed by a pump (not shown) provided in the pipe 32A or the pipe 32B.

  Next, the case where the flow path of the fluid to be processed of the heat exchanger 10 is washed will be described below. When cleaning the heat exchanger 10, first, the valve 34a is closed and the supply of the fluid to be processed is stopped, and then the fluid to be processed remaining in the inner tubular body 13 is removed from the air valve 37a, Then, the valve 35a is opened to discharge from the discharge pipe 36A.

  Next, after closing the valves 34b and 37a, the valve 31a is opened, and the cleaning liquid is introduced into the internal tubular body 13 from the end pipe 12A through the pipe 31A from the cleaning liquid supply source. To do. Therefore, a cleaning liquid is flowed in the X1 direction to clean the flow path of the fluid to be processed. The cleaning liquid is discharged from the discharge pipe 36B by opening the valve 35b.

  Next, after closing the valves 31a and 35b, the valves 31b and 35a are opened. The cleaning liquid flows in the X2 direction that is opposite to the X1 direction, that is, in the inner tubular body 13 in the direction from the end pipe 12B side to the end pipe 12A, and passes through the flow path of the fluid to be processed. After being washed, it is discharged from the pipe 32A through the discharge pipe 36A.

  Conventionally, cleaning by simply flowing the cleaning liquid in the X1 direction may result in insufficient cleaning of the target medium remaining in the flow path of the target medium. For example, the fluid to be processed remaining in the gap CL shown in FIG. 4 is a portion in which the flow rate of the cleaning liquid decreases between the passage holes 17A when the cleaning liquid is flowed only in the X1 direction (the flow is vortexed). There is a possibility that the cleaning becomes locally insufficient.

  Therefore, in this embodiment, the flow of the cleaning fluid that stays in the portion where the flow rate of the cleaning liquid decreases, which could not be removed by the cleaning in the X1 direction, by flowing the cleaning liquid in the X2 direction that is opposite to the X1 direction. It is possible to perform cleaning.

  Further, if necessary, it is preferable that the cleaning liquid flowing in the X1 direction and the cleaning flowing in the X2 direction are repeated a predetermined number of times to improve the cleaning effect, and the cleaning liquid is preferably compressed by a pump or the like not shown. Supplied by means.

  Such cleaning of the heat exchanger 10 is controlled by the control device 10A. The control device 10A is used for heat exchange and cleaning of a heat exchanger such as control of opening / closing of valves such as the valves 31a, 31b, 34a, 34b, 35a and 35b, and control of movable compression means such as a pump. Control for moving the heat exchanger 10, such as such control, is performed. The electrical wiring of the control device 10A is not shown.

  As described above, by performing the control using the control device 10A, it is possible to perform the cleaning in which the cleaning liquid flows in the direction in which the fluid to be processed flows and in the opposite direction to the direction, and the remaining fluid to be processed It is possible to efficiently clean the heat exchanger, and it is possible to improve the cleaning efficiency of the heat exchanger.

  In addition, as the fluid to be treated for heat exchange by the heat exchanger 10, for example, various fluids such as food can be used, but cosmetics that require sanitary properties as well as food other than food, For example, an emulsion or the like can be used, and the heat exchanger according to the present embodiment can be used in a manufacturing process of the emulsion or the like.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the specific embodiments described above, and various modifications and changes can be made within the scope described in the claims.

  ADVANTAGE OF THE INVENTION According to this invention, the maintainability of a heat exchanger improves and it becomes possible to make easy removal of the to-be-processed fluid remaining in the washing | cleaning of the flow path of a to-be-processed fluid.

It is sectional drawing which showed the conventional heat exchanger typically. It is an enlarged view of the a part of the heat exchanger of FIG. It is the figure which showed typically the heat exchanger by Example 1 of this invention. It is an enlarged view of the A section of the heat exchanger of FIG. It is a modification of the heat exchanger of FIG. (A)-(D) are the modifications of the support plate used for the heat exchanger of FIG. It is a perspective view of the holding component holding the support plate used for the heat exchanger of FIG. It is the figure which showed typically the systematic diagram of the heat exchanger of FIG.

Explanation of symbols

10, 100 Heat exchanger 11, 101 External tubular body 12A, 12B, 102A, 102B End piping 13, 103 Internal tubular body 14, 104 Element 15A, 15B, 105A, 105B Support plate 16A, 16B, 106A, 106B Support plate 17A, 17B, 17C, 17D, 17E, 17F, 107A, 107B Passing hole 18A, 18B, 108A, 108B Holding part 18a Protrusion 18b Tip 19A, 19B, 109A, 109B Seal ring 20A, 110A Heat exchange medium outlet 20B , 110B Heat exchange medium inlet 21A, 21a Support CL Clearance D region 30 Heat exchange medium supply source 31 Cleaning liquid supply source 33A Processed fluid supply source 33B Processed fluid holding part 30A, 30B, 31A, 31B, 32A, 32B, 36A, 36B piping 1a, 31b, 34a, 34b, 35a, 35b valves 10A controller

Claims (10)

A first tubular body through which a heat exchange medium flows;
A second tubular body provided inside the first tubular body, through which a fluid to be treated flows;
An element inserted into the second tubular body;
A first support plate for supporting an end of the second tubular body;
A heat exchanger having a second support plate provided to face the first support plate and supporting the element and having a passage hole through which the fluid to be processed passes,
A heat exchanger comprising a support body that forms a gap between the first support plate and the second support plate.   The heat exchanger according to claim 1, wherein the gap is 5 mm or more and 10 mm or less.   The heat exchanger according to claim 1, wherein the support is installed on a surface of the second support plate on a side facing the first support plate.   The heat exchanger according to claim 3, wherein the tip of the support has a substantially hemispherical shape.   The heat exchanger according to claim 1, wherein the support is installed on a surface of the first support plate on a side facing the second support plate.   The heat exchanger according to claim 5, wherein the tip of the support has a substantially hemispherical shape.   The heat exchanger according to any one of claims 1 to 6, wherein the passage hole has a shape that increases in a direction in which the fluid to be treated flows.   An end pipe that communicates with the inside of the plurality of second tubular bodies and through which the fluid to be treated flows is installed at an end of the first tubular body, and the second support is provided on an inner wall surface of the end pipe. The heat exchanger according to any one of claims 1 to 7, wherein a holding component for holding the plate is installed, and the second support plate is held by a protrusion of the holding component. A third support plate for supporting another end of the second tubular body opposite to the end of the second tubular body;
A fourth support plate provided to face the third support plate and having a passage hole through which the fluid to be treated passes;
The heat exchanger according to any one of claims 1 to 8, further comprising another support body that forms a gap between the third support plate and the fourth support plate. . A supply source of cleaning liquid for cleaning the inside of the second tubular body;
A first pipe connecting the supply source and a first side of the second tubular body;
A second pipe connecting the supply source and a second side facing the first side of the second tubular body;
And a controller for controlling the cleaning liquid to flow from the first side to the second side and from the second side to the first side of the second tubular body. The heat exchanger according to any one of claims 1 to 9, characterized in that

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