JP6364207B2 - Multi-tube heat exchanger and liquid introduction member - Google Patents

Description

  The present invention relates to a multitubular heat exchanger and a liquid introduction member, and is particularly useful when applied to a liquid such as a fluid food containing solid matter.

  Conventionally, in order to efficiently heat or cool the liquid to be treated, a multi-tube heat exchanger has been used. The multi-tube heat exchanger includes a heat exchanger body in which a plurality of flow pipes (tubes) are arranged in parallel inside a storage pipe (shell). Moreover, the closing plate which closes the said opening is attached to the opening of the both ends of a storage pipe. A plurality of through holes are formed in the closing plate, and each flow pipe accommodated inside the storage pipe is connected to each through hole.

  The multitubular heat exchanger includes a heat exchanger body and a liquid introduction member connected to the heat exchanger body. The liquid to be treated flows into each flow pipe opened in the closing plate of the heat exchanger main body through the liquid introduction member. On the other hand, a heat exchange medium can be circulated in a space inside the storage tube and outside the distribution tube. With such a configuration, in the multi-tube heat exchanger, heat exchange is performed between the heat exchange medium in the storage tube and the liquid to be processed in the flow tube.

  Here, when the liquid to be treated contains a solid substance, for example, when it contains a fiber called “Sano” like fruit juice, “Sano” appears on the surface of the closing plate. In some cases, accumulation may occur between the openings of the distribution pipe.

  In view of this, a multi-tube heat exchanger that prevents fiber accumulation by fixing the flow pipe to the closing plate so that the interval between the flow pipes is larger than the size of the fiber has been proposed (for example, Patent Document 1). reference).

  However, when adjusting the interval between the flow pipes according to the size of the fiber, the multi-pipe heat exchanger must be manufactured by setting the interval for each beverage to be manufactured, which increases the manufacturing cost and the manufacturing process. There is a problem that it is complicated.

  In addition, the liquid introduction member is configured so that the liquid to be treated is introduced into the heat exchanger body while increasing the speed along the surface direction of the closing plate, thereby preventing fibers and the like from being deposited on the closing plate. A tubular heat exchanger has been proposed (see, for example, Patent Document 2).

  However, a multi-tube heat exchanger that can prevent the deposition of fibers and the like without increasing the speed of the liquid to be treated is also desired.

Japanese Patent No. 4296117 Japanese Patent No. 5201758

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a multitubular heat exchanger and a liquid introduction member that can prevent the accumulation of solid substances in a liquid to be treated.

A first aspect of the present invention that solves the above problem is that a liquid to be treated containing solids circulates inside a plurality of flow pipes, houses the flow pipes, and a heat exchange medium flows outside the flow pipes. And a heat exchanger body including a storage plate configured to hold, and a closing plate that closes the opening of the storage tube while holding the opening of the flow tube to be exposed to the opening of the storage tube, and the heat exchange A liquid introduction member connected to the storage pipe of the main body, and the liquid introduction member has an opening facing the closing plate of the heat exchanger main body and connected to the opening of the storage pipe. It has a spherical flow path, and is configured such that the liquid to be treated flows into the spherical flow path along the surface direction of the closing plate, and the diameter of the opening is shorter than the diameter of the spherical flow path Is a multi-tube heat exchanger characterized by

  In the first aspect, since the liquid to be treated flows in a circle not only in a plane parallel to the closing plate but also in a plane perpendicular to the closing plate, solids adhere to the surface of the closing plate. Accumulation can be suppressed more reliably. As a connection mode of the liquid introduction member, there is one in which a pair of heat exchanger bodies are connected to each other, and a spherical flow path is connected to the heat exchanger body on the side where the liquid to be treated is introduced. Further, the liquid introduction member does not necessarily have to connect the pair of heat exchanger bodies. In this case, a connection mode in which a spherical channel side is connected to the inlet side of the heat exchanger main body to which the liquid to be processed is supplied, and components such as a pump and a pipe are connected to the spherical channel can be exemplified.

  According to a second aspect of the present invention, in the multitubular heat exchanger described in the first aspect, at least one pair of the heat exchanger bodies is provided, and the liquid introduction member is the one of the heat exchanger bodies. The spherical flow path facing the closing plate, and an introduction path that connects the other heat exchanger main body and the spherical flow path, wherein the liquid to be treated is along the surface direction of the closing plate. The multi-tube heat exchanger is configured to flow into the spherical flow path.

  In the second aspect, even when at least a pair of heat exchanger bodies are connected to each other by the liquid introduction member, it is possible to more reliably suppress the solid matter from adhering and depositing on the surface of the closing plate.

  According to a third aspect of the present invention, in the multitubular heat exchanger described in the second aspect, the liquid introduction member is connected to the storage pipe of the other heat exchanger body, and the heat exchanger body A cylindrical flow path extending in a direction perpendicular to the surface direction of the closing plate, and the introduction path communicates with a side surface of the cylindrical flow path and extends in the surface direction of the closing plate. The multi-tube heat exchanger is connected to the spherical flow path.

  In the third aspect, the liquid to be processed discharged from the heat exchanger body does not accumulate in the cylindrical flow path, and the liquid to be processed is smoothly transferred from the heat exchanger body to the introduction path via the cylindrical flow path. Can be introduced.

According to a fourth aspect of the present invention, a plurality of flow pipes through which a liquid to be treated containing solids circulates, the flow pipes are housed, and a heat exchange medium is circulated outside the flow pipes. A storage pipe and a flow path for the liquid to be treated are connected to a heat exchanger body provided with a closing plate for closing the opening of the storage pipe so that the opening of the distribution pipe is exposed to the opening of the storage pipe A liquid introducing member that has a spherical flow channel facing the closing plate of the heat exchanger body, and the liquid to be treated flows into the spherical flow channel along the surface direction of the closing plate. In the liquid introduction member, the spherical flow path includes an opening connected to the opening of the storage tube, and the diameter of the opening is shorter than the diameter of the spherical flow path. .

  In the fourth aspect, a pair of multi-tube heat exchanger bodies are connected to form a multi-tube heat exchanger, and the surface of the closing plate of the heat exchanger body into which the liquid to be treated is introduced is solid. It can suppress more reliably that an object adheres and accumulates.

  ADVANTAGE OF THE INVENTION According to this invention, the multitubular heat exchanger and liquid introduction member which can prevent the deposit of the solid substance in a to-be-processed liquid are provided.

It is a perspective view of the liquid introduction member used for the multitubular heat exchanger concerning this embodiment. It is a front view of the multitubular heat exchanger concerning this embodiment. It is a top view of the multitubular heat exchanger concerning this embodiment. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is the BB sectional drawing which expanded the principal part of FIG. It is the sectional view on the AA line which expanded the principal part of FIG.

  Hereinafter, modes for carrying out the present invention will be described. In addition, description of embodiment is an illustration and this invention is not limited to the following description.

<Embodiment 1>
FIG. 1 is a perspective view of a liquid introducing member used in the multitubular heat exchanger according to the present embodiment, FIG. 2 is a front view of the multitubular heat exchanger according to the present embodiment, and FIG. FIG. 4 is a plan view of the multi-tube heat exchanger according to the embodiment, and FIG. 4 is a cross-sectional view taken along line AA in FIG. The multitubular heat exchanger according to the present embodiment and the liquid introduction member used therefor will be described with reference to these drawings.

  As shown in the figure, the multi-tube heat exchanger 1 (hereinafter also referred to as a heat exchanger) is also referred to as a multi-tube heat exchanger body 10 (hereinafter also referred to as a heat exchanger body 10) that performs heat exchange of the liquid to be treated. And a liquid introduction member 50 that is detachably attached to the heat exchanger body 10. Although the to-be-processed liquid containing a solid substance does not have limitation in particular, For example, the fruit drink containing solid substances, such as a fiber derived from a fruit and vegetables, etc. can be mentioned as a to-be-processed liquid.

  The heat exchanger 1 which concerns on this embodiment has the two heat exchanger main bodies 10 as an example. Hereinafter, when the two heat exchanger bodies 10 are described separately, they are referred to as a heat exchanger body 10a and a heat exchanger body 10b. When the two heat exchanger bodies are described without distinction, they are described as the heat exchanger body 10.

  The heat exchanger body 10 includes a flow pipe 20 through which the liquid to be treated flows, a closing plate 30 that fixes the flow pipe 20, and a storage pipe 40 in which the flow pipe 20 is stored.

  The flow pipe 20 is a member through which the liquid to be processed flows, and the liquid to be processed flows through the flow path 21 inside the flow pipe 20. In the present embodiment, the flow pipe 20 is formed in a cylindrical shape.

  The storage tube 40 is a tubular member configured to store the flow tube 20 in the internal flow path 42 and to allow the heat exchange medium to flow outside the flow tube 20. In the present embodiment, the storage pipe 40 is formed in a cylindrical shape having an inner diameter that can accommodate the plurality of flow pipes 20 in the flow path 42, and the closing plate 30 closes the opening 41 of the storage pipe 40, A path 42 is formed.

  The closing plate 30 is a member that holds the opening 22 of the flow pipe 20 so as to be exposed to the opening 41 of the storage pipe 40 and closes the opening 41 of the storage pipe 40. Specifically, the closing plate 30 is formed as a disk-shaped member having a plurality of through holes 32 through which the flow pipe 20 is inserted.

  A plurality of (seven in this embodiment) flow pipes 20 are inserted into each through hole 32, and welding is performed with the opening 22 of the flow pipe 20 and the surface 31 of the closing plate 30 being substantially flush with each other. For example, it is fixed to the closing plate 30. As described above, the flow pipes 20 are held by the closing plate 30 so as to be substantially parallel to each other.

  The closing plate 30 holding the flow pipe 20 closes one opening 41 of the storage pipe 40 and is fixed to the storage pipe 40. Although not particularly illustrated, another closing plate 30 that fixes the opening on the opposite side of the flow pipe 20 closes the other opening of the storage pipe 40 and is fixed to the storage pipe 40.

  Thus, the closing plate 30 holding the flow pipe 20 closes the openings 41 at both ends of the storage pipe 40, so that the heat exchange medium flows without being mixed with the liquid to be processed flowing through the flow pipe 20. A flow path 42 is formed.

  A supply port 43 that communicates with the flow path 42 of the storage tube 40 is provided in the vicinity of one opening 41 of the storage tube 40. Although not particularly illustrated, a discharge port communicating with the flow path 42 is provided in the vicinity of the other opening of the storage tube 40. The heat exchange medium is supplied from the supply port 43 to the flow path 42 of the storage tube 40 sealed by the closing plate 30, and the heat exchange medium is discharged from the discharge port.

  In this way, the heat exchange medium supplied to the flow path 42 of the storage pipe 40 comes into contact with the surface of the flow pipe 20 disposed in the flow path 42, so that the processing target in the flow path 21 of the flow pipe 20 is processed. Heat exchange with liquid is possible.

  The liquid introduction member 50 according to the present embodiment is a member that constitutes a flow path through which the liquid to be processed flows, and connects the pair of heat exchanger main bodies 10. In this embodiment, it is assumed that after heat exchange of the liquid to be processed in one heat exchanger body 10a, the liquid to be processed is introduced into the other heat exchanger body 10b and heat exchange is continuously performed. In such a case, the liquid introduction member 50 functions as a flow path for introducing the liquid to be processed heat-exchanged in the heat exchanger body 10a into the heat exchanger body 10b.

  The liquid introduction member 50 will be described in detail. The liquid introduction member 50 according to this embodiment includes a spherical channel 60, a cylindrical channel 70, and an introduction channel 80.

  The spherical flow channel 60 is a flow channel formed in a spherical shape so as to face the closing plate 30 of the heat exchanger main body 10b into which the liquid to be processed flows. “The spherical channel 60 faces the closing plate 30” means that the closing plate 30 is included in the spherical channel 60 when viewed from a direction perpendicular to the surface of the closing plate 30 (plan view shown in FIG. 3). That is, the spherical flow path 60 is positioned with respect to the closing plate 30. In addition, the spherical flow path 60 being spherical does not mean a perfect sphere, but includes a case where the inner surface of the flow path through which the liquid to be treated flows is a substantially sphere or an ellipse. In the present embodiment, the spherical channel 60 is formed so that the inner surface is substantially spherical, and the diameter thereof is larger than the diameter of the closing plate 30, and the center of the closing plate 30 and the spherical channel 60 in a plan view. The center of is overlapping.

  The spherical flow path 60 is provided with a first opening 51 that is connected to the opening 41 of the storage tube 40. By connecting the opening 41 and the first opening 51, the spherical channel 60 communicates with the storage tube 40 of the heat exchanger body 10b.

  The cylindrical channel 70 is a channel connected to the storage tube 40 of the heat exchanger body 10b that discharges the liquid to be processed. The cylindrical flow path 70 has the 2nd opening part 52 opened to the heat exchanger main body 10b side. In the present embodiment, the cylindrical flow path 70 has an inner diameter that is substantially the same as the outer shape of the closing plate 30. By connecting the second opening 52 and the opening 41 of the storage tube 40 of the heat exchanger body 10b, the cylindrical flow path 70 communicates with the storage tube 40 of the heat exchanger body 10a.

  The introduction path 80 is a hollow tubular member that connects the spherical channel 60 and the cylindrical channel 70. The introduction path 80 is configured such that the liquid to be processed flows into the spherical flow path 60 along the surface direction of the closing plate 30 (direction parallel to the surface 31).

  “Direction toward the spherical flow path 60 along the surface 31 of the closing plate 30” means that a component parallel to the closing plate 30 is added to the direction component of the flow of the liquid to be processed flowing into the spherical flow path 60 from the introduction path 80. Including. In particular, the introduction path 80 is preferably configured so that the liquid to be processed is supplied to the flow path portion 62 in parallel with the closing plate 30. Hereinafter, this direction is also simply referred to as a closing plate direction.

  As shown in FIG. 4, in this embodiment, the introduction path 80 is formed so that a straight line L passing through the center of the introduction path 80 and parallel to the closing plate direction passes through the center O of the spherical flow path 60. . Thereby, the liquid to be processed flows through the introduction path 80 along the closing plate direction and flows into the spherical flow path 60.

  The liquid introduction member 50 is formed with a first flange portion 53 that protrudes outside the first opening portion 51 and the second opening portion 52. On the other hand, a second flange portion 33 protruding outward is also formed in the opening 41 of each storage tube 40. The first flange portion 53 and the second flange portion 63 are fastened and fixed by a clamp 90 while being in contact with each other. The first flange portion 53 and the second flange portion 63 can be removed by loosening the clamp 90.

  In this way, the liquid introduction member 50 is connected to the storage tubes 40 of the heat exchanger main bodies 10a and 10b and fixed by the clamps 90, whereby the liquid to be treated is discharged from the flow pipe 20 of the heat exchanger main body 10a. The liquid introduction member 50 joins at the first opening 51 and flows into the flow pipes 20 of the heat exchanger main body 10b from the second opening 52 through the cylindrical flow path 70, the introduction path 80, and the spherical flow path 60. In other words, the liquid to be processed can be continuously passed through the plurality of heat exchanger bodies 10 to exchange heat.

  The flow of the liquid to be processed in the heat exchanger 1 will be described with reference to FIGS. 5 and 6. 5 is an enlarged cross-sectional view taken along line BB of the main part of FIG. 2, and FIG. 6 is an enlarged cross-sectional view taken along line AA of the main part of FIG.

  As described above, the introduction path 80 is provided along the closing plate direction. Accordingly, the liquid to be processed flows from the introduction path 80 toward the central portion of the spherical flow path 60 along the closing plate direction, and the liquid to be processed faces the introduction path 80 on the inner surface of the spherical flow path 60. Reach the part.

  And since the inner surface of the spherical flow path 60 is formed in a spherical shape, the liquid to be processed flows in the spherical flow path 60 so as to draw a circle, as indicated by arrows in the figure. That is, in the spherical channel 60, the liquid to be processed flows into the flow pipe 20 and is parallel to the plane parallel to the closing plate direction and the orthogonal direction (the direction perpendicular to the surface of the closing plate 30). It creates a flow that draws a circle on any surface. Then, the flow of the liquid to be processed in the vicinity of the surface of the closing plate 30 (region between the through holes 32) includes a flow in the closing plate direction and a flow away from the surface of the closing plate 30 in the orthogonal direction. .

  Therefore, even if solids in the liquid to be treated such as “Sano” adhere between the flow pipes 20 of the closing plate 30, the solids are pushed toward the closing plate by the flow of the liquid to be treated. Can be peeled off from the surface of the closing plate 30.

  As described above, the multi-tube heat exchanger 1 has the liquid introduction member 50 for circulating the liquid to be processed from one heat exchanger body 10a to the other heat exchanger body 10b. The liquid introduction member 50 has a spherical flow path 60 that faces the closing plate 30, and is configured such that the liquid to be treated is introduced into the spherical flow path 60 through the introduction path 80 along the closing plate direction.

  According to the multi-tube heat exchanger 1 having such a configuration, the liquid to be treated flows in a circle not only in a plane parallel to the closing plate 30 but also in a plane perpendicular to the closing plate 30. On the surface of the closing plate 30, it is possible to more reliably suppress the solid matter from adhering and accumulating.

  Moreover, the multi-tube heat exchanger 1 does not adjust the interval between the openings 22 of the flow pipe 20 that appears on the closing plate 30 in accordance with the shape of the solid material, as in the related art. Thereby, since it can design and manufacture irrespective of the shape of solid matter, it becomes unnecessary to design and produce another kind of multi-tubular heat exchanger 1 according to the solid matter, reducing the production cost, The manufacturing process can be simplified.

  Furthermore, the multi-tube heat exchanger 1 does not increase the speed of the liquid to be processed. Thereby, it is not necessary to design and manufacture the liquid introduction member 50 having a shape suitable for increasing the liquid to be processed at a desired speed, and the manufacturing cost can be reduced and the manufacturing process can be simplified.

  Since the inner surface of the spherical flow path 60 is spherical, the liquid introduction member 50 has no corners and is easy to clean. Further, since the liquid introduction member 50 is configured to be detachable from the heat exchanger main body 10, the liquid introduction member 50 can be detached from the heat exchanger main body 10, and maintenance and replacement such as cleaning can be easily performed individually. .

  Moreover, the cylindrical flow path 70 was provided as a flow path connected to one heat exchanger main body 10a. By providing the cylindrical flow path 70 having an inner diameter substantially the same shape as the storage tube 40, the liquid to be processed discharged from the heat exchanger main body 10a does not accumulate inside, and the cylindrical flow path from the heat exchanger main body 10a. The liquid to be treated can be smoothly introduced into the introduction path 80 via the 70.

<Other embodiments>
As mentioned above, although one Embodiment of this invention was described, the basic composition of this invention is not limited to what was mentioned above.

  For example, although the liquid introduction member 50 is a separate member that can be attached to and detached from the heat exchanger body 10, the liquid introduction member 50 may be integrated with the heat exchanger body 10.

  Furthermore, although the one end side of the liquid introduction member 50 is the cylindrical flow path 70, it is not necessarily limited to such a configuration. For example, the introduction path 80 may be configured to bend toward the heat exchanger body 10a, or may have the same shape as the spherical flow path 60.

  As shown in FIGS. 5 and 6, the introduction path 80 is configured so that the liquid to be processed is supplied toward the center of the spherical flow path 60, but is not limited to such an aspect. For example, the introduction path 80 may be connected to the spherical flow path 60 so that the liquid to be processed follows the inner surface of the spherical flow path 60. Also with this configuration, the liquid to be treated can be circulated in the spherical flow path 60 so as to draw a circle as shown in FIGS. 5 and 6.

  In Embodiment 1, the heat exchanger 1 has a pair of heat exchanger bodies 10, but there may be two or more pairs. Further, the liquid introduction member does not necessarily need to connect the pair of heat exchanger bodies 10 to each other. For example, a connection mode in which the spherical flow path 60 is connected to the storage pipe 40 of the heat exchanger main body 10b to which the liquid to be processed is supplied, and components such as a pump and piping are connected to the spherical flow path 60 or the introduction path 80. Can do.

1 Multi-tube heat exchanger (heat exchanger)
10, 10a, 10b Multi-tube heat exchanger body (heat exchanger body)
20 Flow pipe 30 Closing plate 40 Storage pipe 50 Liquid introduction member 60 Spherical flow path 70 Cylindrical flow path 80 Introduction path

Claims (4)

A plurality of flow pipes through which a liquid to be treated containing solids flows, a storage pipe configured to store the flow pipe and a heat exchange medium to flow outside the flow pipe, and an opening of the flow pipe A heat exchanger body comprising a closing plate that holds the opening so as to be exposed to the opening of the storage tube and closes the opening of the storage tube;
A liquid introduction member connected to the storage pipe of the heat exchanger body,
The liquid introduction member has a spherical flow path having an opening facing the closing plate of the heat exchanger body and connected to the opening of the storage tube ,
The liquid to be treated is configured to flow into the spherical flow path along the surface direction of the closing plate ,
The diameter of the opening is shorter than the diameter of the spherical flow path . The multi-tube heat exchanger according to claim 1, wherein
Comprising at least a pair of the heat exchanger bodies,
The liquid introduction member has the spherical flow path facing the closing plate of one of the heat exchanger main bodies, and an introduction path that connects the other heat exchanger main body and the spherical flow path,
The multi-tube heat exchanger, wherein the introduction path is configured such that the liquid to be treated flows into the spherical flow path along a surface direction of the closing plate. The multitubular heat exchanger according to claim 2,
The liquid introduction member is connected to the storage tube of the other heat exchanger body, and has a cylindrical flow path extending in a direction perpendicular to the surface direction of the closing plate of the heat exchanger body,
The introduction path communicates with a side surface of the cylindrical flow path, extends in the surface direction of the closing plate, and is connected to the spherical flow path. A plurality of flow pipes through which a liquid to be treated containing solids flows, a storage pipe configured to store the flow pipe and a heat exchange medium to flow outside the flow pipe, and an opening of the flow pipe A liquid introduction member connected to a heat exchanger body having a closing plate for closing the opening of the storage pipe so as to be exposed at the opening of the storage pipe and constituting a flow path of the liquid to be treated,
It has a spherical flow channel facing the closing plate of the heat exchanger body, and the liquid to be treated flows into the spherical flow channel along the surface direction of the closing plate ,
The spherical flow path includes an opening connected to the opening of the storage tube,
The diameter of the said opening part is shorter than the diameter of the said spherical flow path, The liquid introduction member characterized by the above-mentioned .

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