JP4976467B2 - Heat exchanger - Google Patents

Description

  In the present invention, the external fluid introduced from the outside is discharged after passing through the accommodation space in which the pipe for heat exchange is accommodated, thereby performing heat exchange between the external fluid and the internal fluid flowing in the pipe. Regarding the exchanger.

  In this type of heat exchanger, a pipe including a cross-directional pipe disposed in a direction intersecting the flow direction of the external fluid is defined in the accommodating space by the extending direction of the cross-directional pipe and the flow direction. A pipe group is formed by stacking in a direction intersecting with the surface (see Patent Documents 1 and 2).

JP 2008-025976 A JP 2008-032252 A

  However, in the heat exchanger, the pipes are laminated so that the pipes do not come into contact with each other. Therefore, the external fluid that flows between adjacent pipes in the stacking direction flows without sufficiently exchanging heat with the internal fluid. Heat exchange efficiency is difficult to increase.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a technique for increasing the efficiency of heat exchange.

First configuration in order to solve the above problems, an external fluid introduced from the outside, by discharging from through the housing space the pipe for heat exchange is housed, the external fluid and the pipe It is a heat exchanger which performs heat exchange with the internal fluid which distribute | circulates.

  A direction in which the pipe including the cross direction pipe disposed in the direction intersecting with the flow direction of the external fluid intersects the surface defined by the extending direction of the cross direction pipe and the flow direction in the accommodation space. And a gap extending in the extending direction of the intersecting pipe is formed between the pipes constituting the pipe group, and a guide member is formed in the gap. The guide member is arranged so as to change the flow direction of the external fluid flowing through the gap in which the guide member is disposed.

  In the case of the heat exchanger configured as described above, by changing the flow direction of the external fluid passing through the gap by the guide member, it becomes difficult for the external fluid to pass between the pipes and to come into contact with the pipe. , Heat exchange efficiency can be increased.

The guide member in this configuration may be disposed in at least a partial region of the gap formed between the pipes forming the pipe group.
In addition, the pipe group in the above configuration may be formed by stacking different pipes, or may be formed by reciprocating one or two or more pipes to the accommodation space. Because of this latter, for example, it is conceivable to make the second configuration shown below.

  In the second configuration, the pipe group is formed by a spiral pipe, and the spiral pipe includes a cross-direction pipe whose part is disposed in a direction crossing the flow direction. A connecting pipe which is a portion connecting the cross direction pipe located upstream of the flow direction and the cross direction pipe located downstream, and is defined by the extending direction and the flow direction of the cross direction pipe. It is spirally wound and stored in the accommodation space in a positional relationship where it is stacked in a direction crossing the surface to be stored.

If it is this structure, the heat exchanger similar to the said structure is realizable with a helical pipe.
In addition, when the cross direction pipe and the connection pipe in the spiral pipe are respectively spaced apart from each other in the stacking direction, they are guided to at least a partial region of a gap formed between the pipes. as a configuration for disposing the member, it may be a third as configuration shown below.

  In the third configuration, the guide member is between each of the connection pipes located on one end side of the cross direction pipe, and between each of the connection pipes located on the other end side of the cross direction pipe. It is arrange | positioned in either or both of these.

If it is this structure, the distribution direction of the external fluid which passes between the laminated | stacked connection pipes can be changed.
Each of the connecting pipes connecting the cross-direction pipes contacts the external fluid flowing through the gap between the connecting pipes, but the contact angle is shallow, and the temperature boundary layer generated in the connecting pipe is difficult to peel off, so heat exchange Is not done efficiently.

  However, if a guide member is disposed in the gap between the connection pipes as in the above configuration, the flow direction of the external fluid flowing through the gap can be changed, and the temperature boundary layer peeling off that occurs in the connection pipe Thus, heat exchange at the contact between the connecting pipe and the external fluid can be enhanced.

  In addition, such a change in the flow direction of the external fluid can promote separation of the temperature boundary layer in the end region of the cross direction pipe, and thus contributes to increasing the efficiency of heat exchange in the entire heat exchanger. .

The guide member in the above arrangement, after the external fluid reaches the guide member, if it is possible to change the flowing direction of the external fluid is not particularly limited for its specific configuration, for example, the fourth configuration It can be considered as follows.

In the fourth configuration, the guide member has a plate-like portion interposed between the pipes, and a protruding portion that protrudes in a direction intersecting the surface of the plate-like portion.
In this configuration, since the protruding portion protrudes in a direction intersecting with the surface of the plate-like portion of the guide member, the external fluid hitting this protruding portion is directed to the pipe positioned above or below the plate-like portion. Can be distributed.

  In this structure, the protrusion part in a guide member should just protrude from the plate-shaped part. However, projecting from the plate-like portion over a certain range is preferable because the external fluid can be guided toward the pipe over a wide range.

  As a specific example, for example, a configuration in which the protruding portion of the guide member protrudes in a direction intersecting with the surface of the plate-like portion over a certain range extending in a direction intersecting with the flow direction is conceivable.

  In this configuration, the protrusion of the guide member extending in the direction intersecting the direction of flow of the external fluid causes the external fluid flowing in the gap region between the pipes to collide with the protrusion and sandwich the plate-like portion. Guided towards the pipe located above or below.

It is conceivable to make the fifth configuration shown below as another configuration.
5th structure WHEREIN: The protrusion part of the said guide member protrudes in the diagonal direction toward the pipe located up or down on both sides of the said plate-shaped part.

In this configuration, the external fluid flowing in the gap region between the pipes can be guided in an oblique direction toward the pipe positioned above or below the plate-like portion.
At this time, since the angle at which the external fluid hits the protrusion is smaller than a right angle, the protrusion does not greatly hinder the downstream flow of the external fluid. Thereby, the external fluid can be guided toward the pipe located above or below without greatly disturbing the flow of the external fluid. Thereby, the efficiency of heat exchange can be improved.

  Moreover, the protrusion part of the guide member in each said structure should just protrude from the surface of a plate-shaped part, for example, the member attached to the plate-shaped part, the member which raised the plate-shaped part, or plate shape It is good also as a member integral with a part.

A perspective view showing the appearance of the heat exchanger Schematic view of pipe group in the distribution direction Surface and side views showing the structure of the guide member The perspective view which shows the assembly state of a heat exchanger

Embodiments of the present invention will be described below with reference to the drawings.
(1) Overall Configuration As shown in FIG. 1, the heat exchanger 1 allows an external fluid introduced from the outside to be accommodated in a housing space in which each of a plurality of heat transfer pipes (hereinafter simply referred to as “pipes”) 2 is housed. By discharging after passing, heat exchange between the external fluid and the internal fluid flowing through the pipe 2 is performed.

  In this accommodation space, a plurality of spiral pipes 2 surround a quadrangular region so as to form a multiple spiral shape, and in this region, a pipe row comprising one or more pipes 2 arranged along a plane. Are stacked in a direction intersecting with the plane (in this embodiment, a direction orthogonal to the plane; hereinafter referred to as “stacking direction”) to form a pipe group.

  Each of the spiral pipes 2 forming this pipe group includes a cross direction pipe 26 which is a portion disposed in a direction intersecting the upstream side and the downstream side in the flow direction of the external fluid, and a cross direction pipe located on the upstream side. 26 and a connecting pipe 28 which is a part connecting the cross direction pipe 26 located on the downstream side, and is laminated in a direction crossing a plane defined by the extending direction and the flow direction of the cross direction pipe 26. It is wound spirally in the positional relationship and stored in the accommodation space.

  Further, as shown in FIG. 2, the cross direction pipes 26 in the spiral pipe 2 are located at a predetermined distance in the stacking direction, and each of them is inclined from one end to the other end. Yes.

  Further, a gap extending along the extending direction of the pipe is formed between the pipe rows constituting the pipe group, and a guide member 3 for changing the flow direction of the external fluid is formed in the area in the gap. It is arranged. In the present embodiment, among the gaps extending between the pipe rows, the gaps between the connection pipes 28 located on one end side of the cross direction pipe 26 and the connection pipe 28 located on the other end side of the cross direction pipe 26. Guide members 3 are disposed in both of the gaps.

  As shown in FIG. 3, the guide member 3 includes a plate-like portion 33 that expands in a triangular shape, and a projecting portion 37 that is formed along the entire side other than the bottom of the triangular shape. The projecting portion 37 is formed by bending an edge other than the bottom of the triangle in a convex shape toward a surface (hereinafter referred to as “upper surface”) facing upward with the guide member 3 interposed between the pipe rows. Yes. By projecting in this way, the projecting portion 37 is in a state of projecting in an oblique direction toward the pipe 2 positioned above the plate-shaped portion 33.

Further, the guide member 3 is in a state of being interposed between the connecting pipes 28 so that the protruding portion 37 abuts in the vicinity of the connection portion between the cross direction pipe 26 and the connecting pipe 28.
A plurality of through-holes 39 are formed in the plate-like portion 33 of the guide member 3 so as to penetrate each plate-like portion 33 in the thickness direction.

As shown in FIG. 4, the guide member 3 includes a pair of sandwiching members 4 and 5 that sandwich the pipe group in the stacking direction of the pipe rows, and a rod-shaped coupling member 6 that couples the sandwiching members 4 and 5. Is fixed to the pipe group.
(2) Action and Effect With the heat exchanger 1 configured as described above, the projecting portion 37 of the guide member 3 changes the flow direction of the external fluid that passes between the stacked pipes 2, thereby providing an external Since it becomes difficult for the fluid to pass through between the pipes 2 and the pipes 2 positioned above or below the guide members 3 are inclined at an angle, the efficiency of heat exchange can be increased.

  Moreover, in the said embodiment, the guide member 3 is arrange | positioned in the area | region corresponding to each connection pipe 28 among the clearance gaps extended in the extending direction of this pipe between 2 pipes. Therefore, the flow direction of the external fluid passing between the stacked connection pipes 28 can be changed.

  In addition, if the guide member 3 is disposed in the gap between the connection pipes 28 as described above, the flow direction of the external fluid flowing through the gap can be changed, and the temperature boundary layer generated in the connection pipe 28 can be separated. Can be encouraged. Therefore, it is possible to enhance heat exchange in contact between the connection pipe 28 and the external fluid.

  In addition, such a change in the flow direction of the external fluid can promote the separation of the temperature boundary layer in the end region of the cross-direction pipe 26, so that the heat exchange efficiency of the entire heat exchanger 1 can be improved. Contribute.

  Further, in the above embodiment, since the protruding portion 37 protrudes in the direction intersecting with the surface of the plate-like portion 33 in the guide member 3, the external fluid that has hit the protruding portion 37 is sandwiched between the plate-like portion 33. Or it can flow toward the pipe 2 located below.

  Moreover, since the protrusion part 37 protrudes in the diagonal direction toward the downstream of the distribution path which distribute | circulates the clearance gap between pipes in the said embodiment, the distribution | circulation of an external fluid is also prevented greatly to the pipe 2 located downstream. It is possible to guide the external fluid without any problem, and an external fluid can be guided by making an angle with the pipe positioned above or below the plate-like portion 33.

  At this time, since the angle at which the external fluid hits the protruding portion 37 is smaller than a right angle, the protruding portion 37 does not greatly hinder the downstream flow of the external fluid. As a result, even if the protruding portion 37 is elongated in the direction intersecting with the flow path flowing through the gap between the pipes, the external fluid is angled to the pipe 2 over a wide range without greatly disturbing the flow of the external fluid. Can guide. Thereby, the efficiency of heat exchange can be improved.

  Moreover, in the said embodiment, since the protrusion part 37 can be comprised by the simple process of bending the edge in the plate-shaped part 33, a guide member can be easily formed from a mere plate-shaped member. Furthermore, the bending strength of the guide member 3 can be improved by bending the edge of the plate-like portion 33.

  In addition, when the guide member 3 is disposed between the connecting pipes 28, the projecting portion 37 is in contact with the vicinity of the connection portion between the cross direction pipe 26 and the connecting pipe 28. You can also reduce the date.

Moreover, in the said embodiment, since the through-hole 39 is formed in the plate-shaped part 33 of the guide member 3, as a result that fluids, such as ambient air and moisture, distribute | circulate through this through-hole 39, It is suitable for preventing the fluid from staying around the guide member 3.
(3) Modifications Embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and can take various forms as long as they belong to the technical scope of the present invention. Needless to say.

  For example, in the said embodiment, it is comprised so that the spiral pipe 2 may be reciprocated to accommodation space and a pipe group may be formed. However, the pipe group only needs to have a portion disposed in the direction intersecting the upstream side and the downstream side in the flow direction of the external fluid, and each of these portions is formed by a separate pipe. May be.

  In addition, the specific configuration of the guide member 3 in the above embodiment is not limited to the configuration of the above embodiment as long as the flow direction of the external fluid can be changed after the external fluid arrives.

  Moreover, in the said embodiment, the protrusion part 37 in the guide member 3 is comprised so that it may protrude over the range extended diagonally toward the downstream of a distribution channel. However, the protruding portion 37 may only protrude from a part of the plate-like portion 33.

  Moreover, in the said embodiment, the protrusion part 37 of the guide member 3 should just protrude from the surface of the plate-shaped part 33, for example, cuts and raises the member attached to the plate-shaped part 33, or the plate-shaped part 33. Or a member integrated with the plate-like portion 33.

  Moreover, in the said embodiment, the protrusion part 37 in the guide member 3 is comprised so that it may protrude on an upper surface side. However, the projecting portion 37 may be configured to project on a surface facing downward (hereinafter referred to as “lower surface”) with the guide member 3 interposed between the pipe rows, or on the upper surface side and the lower surface side. You may comprise so that it may protrude in both.

  Moreover, in the said embodiment, the guide member 3 is each clearance gap between the connection pipes 28 located in the one end side of the cross direction pipe 26, and each of the connection pipes 28 located in the other end side of the cross direction pipe 26. The structure arrange | positioned in both of the clearance gaps was illustrated. However, the guide member 3 may be disposed only in one gap, or one or more guide members 3 may be disposed in a region corresponding to the cross direction pipe 26.

  DESCRIPTION OF SYMBOLS 1 ... Heat exchanger, 2 ... Pipe, 26 ... Crossing direction pipe, 28 ... Connection pipe, 3 ... Guide member, 33 ... Plate-shaped part, 37 ... Projection part, 39 ... Through-hole, 4 ... Insertion member, 6 ... Connection Element.

Claims (2)

A heat exchanger for exchanging heat between the external fluid and the internal fluid flowing through the pipe by discharging the external fluid introduced from the outside through the storage space in which the pipe for heat exchange is stored Because
In the housing space, a cross direction pipe disposed in a direction crossing the flow direction of the external fluid is laminated in a direction perpendicular to the extending direction of the cross direction pipe and the plane defined by the flow direction. A group of pipes is formed,
A gap formed between the Rupa type between to adjacent in the laminating direction in said pipe group, the guide member is disposed, the guide member includes a plate-like portion interposed between the pipe between, the plate A pipe located above or below across the shape portion and a projecting portion projecting obliquely toward the downstream of the distribution path ,
further,
The pipe group is formed by a spiral pipe,
The spiral pipe includes a cross-direction pipe, a part of which is arranged in a direction crossing the flow direction of the external fluid, and the cross-direction pipe and the downstream side located on the upstream side of the flow direction. It is a connecting pipe that is a part that connects the cross direction pipes located in the pipe, and is spirally formed in a positional relationship in which the cross direction pipes are stacked in a direction intersecting with the extending direction and the plane defined by the flow direction. It is wound and stored in the storage space,
The heat exchanger according to claim 1, wherein the guide member is disposed in a gap formed between the adjacent connecting pipes . The cross direction pipes in the spiral pipes are located at a predetermined distance in the stacking direction,
The guide member is either or both between the connection pipes located on one end side of the cross direction pipe and between the connection pipes located on the other end side of the cross direction pipe. the heat exchanger according to claim 1, characterized in that disposed on the.

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