JP2010054180A - Heat exchanger and spacer set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of suitably the positioning of a tubular body for heat exchange by a member having a small size and a simple structure. <P>SOLUTION: The heat exchanger HE includes first and second spacers 1 and 2 as positioning spacers for a plurality of tubular bodies 4 for heat exchange extended in an X-direction and arranged in a Y-direction. The first spacer 1 includes a plurality of first projections 10 arranged at intervals in the Y-direction and extended in a Z-direction, and the projection is inserted between the plurality of tubular bodies 4, whereby the Y-directional arrangement pitch of the plurality of tubular bodies 4 is regulated. The second spacer 2 includes a plurality of second projections 20 arranged at intervals in the Z-direction and extended in the Y-direction, and can be installed to the plurality of tubular bodies 4 in such a manner that the plurality of tubular bodies 4 are sandwiched thereby in the Z-direction. When this spacer is installed, the first and second spacers 1 and 2 are engaged with each other so as to regulate the relative movement of the first spacer 1 and the plurality of tubular bodies 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat exchanger capable of suitably positioning a heat exchanging tube using a spacer, and a spacer set suitable for use in positioning a heat exchanger tube.

As conventional examples of a heat exchanger using a spacer or a fixture similar to a spacer, there are those described in Patent Documents 1 and 2.
In the heat exchanger described in Patent Document 1, both ends are formed in a semicircular arc shape, and a fixture that can be fitted to the pipe body is used, and a plurality of pipes for heat exchange are used. Of these, two adjacent pipes are connected to each other by using the fixture.
On the other hand, in the heat exchanger described in Patent Document 2, a spacer in which a plurality of protrusions are formed at a predetermined interval is used, and the plurality of protrusions of the spacer are used as a plurality of tubes for heat exchange. By inserting them between each other, the arrangement pitch of the plurality of tube bodies is regulated to a predetermined dimension.

  However, in Patent Documents 1 and 2 described above, there is still room for improvement as described below.

  That is, in Patent Document 1, the arrangement pitch of the two tubular bodies is merely defined by one fixture. For this reason, when there are many tube bodies which comprise a heat exchanger, it is necessary to use many fixing tools corresponding to it. This increases the cost of the fixture and thus the manufacturing cost of the entire heat exchanger. In addition, the work for assembling many fixing tools to a plurality of pipes becomes complicated, and the workability is also poor.

  On the other hand, in Patent Document 2, in order to insert a plurality of protrusions provided on one spacer between the tubes, the number of protrusions is increased even when the number of tubes is large. It is possible to easily cope with this, and unlike Patent Document 1, it is not necessary to use many spacers. However, since the spacer itself described in Patent Document 2 merely inserts a plurality of protrusions from one side into a gap between a plurality of tube bodies, such attachment is simply performed. However, the spacer and the plurality of tubes are not fixed, and the spacer may be detached from the plurality of tubes due to, for example, vibration of the heat exchanger. Therefore, in Patent Document 2, a frame that is separate from the spacer is used, and the spacer is fixed by surrounding the plurality of tubes and the spacer together using the frame. . However, in such a means, the size of the frame body needs to be formed in a large size that surrounds the entire plurality of tube bodies, so that it is still improved from the viewpoint of reducing the size and weight of components. There is room for.

Japanese Patent No. 3762605 JP 2008-151474 A

  The present invention has been conceived under the circumstances as described above, and positioning of a plurality of tubes for heat exchange can be suitably achieved with a small-sized and simple member. The problem is to provide a heat exchanger and a spacer set suitable for such applications.

  In order to solve the above problems, the present invention takes the following technical means.

  The heat exchanger provided by the first aspect of the present invention includes a plurality of tubes for heat exchange in which all or part of X, Y, and Z directions intersecting each other extend in the X direction and are arranged in the Y direction. A heat exchanger comprising a body and a spacer for positioning the plurality of tube bodies, wherein the spacer includes a first spacer and a second spacer, By having a plurality of first protrusions arranged at intervals in the Y direction and extending in the Z direction, the plurality of first protrusions are inserted between the plurality of tubes. The arrangement pitch in the Y direction of the plurality of tube bodies can be defined, and the second spacer has a plurality of second protrusions arranged in the Z direction at intervals and extending in the Y direction. The plurality of second protrusions sandwich the plurality of tubes in the Z direction. It can be attached to the plurality of tubular bodies as desired, and when the second spacer is attached to the plurality of tubular bodies, relative movement between the first spacer and the plurality of tubular bodies is performed. In order to regulate, the first and second spacers are configured to be engageable with each other.

  According to such a configuration, the relative movement between the first spacer and the plurality of tubes is restricted by the second spacer, and the positioning of the plurality of tubes using the first spacer is ensured. In addition, unlike the frame described in Patent Document 2, the second spacer does not need to be formed in a large size so as to surround the entire plurality of tubes to be positioned, and is small and lightweight. Can be. In addition, it is easy to attach the second spacer to the plurality of pipes, and the assembly work cost can be reduced.

  In a preferred embodiment of the present invention, the first and second spacers may be configured such that the first spacer moves in the X direction, and the plurality of first protrusions in the Z direction are the plurality of first protrusions. It is possible to engage so that the movement in the direction of coming out of between the tube bodies is regulated together.

  According to such a configuration, it is possible to more appropriately achieve positioning of the plurality of tubular bodies using the first spacer.

  In a preferred embodiment of the present invention, the first spacer has a plurality of base end connecting portions that connect base end portions of the plurality of first protrusions, and the plurality of base end connecting portions. Can contact the outer surfaces of the plurality of tubes when the plurality of first projections are inserted between the plurality of tubes, and each of the first projections is in the X direction. A pair of extending portions extending in the Z direction with a gap therebetween, and a tip connecting portion connecting the tip portions of the pair of extending portions, and the plurality of second protrusions are the first projections. By being disposed between the pair of extending portions of the protrusion, movement of the first spacer in the X direction is restricted, and any one of the plurality of second protrusions is the tip. By being arranged so as to be able to come into contact with the connecting portion in the Z direction, the first space is provided. Movement in the Z direction Sa is configured to be regulated.

  According to such a structure, it can implement | achieve with a simple structure that the 1st spacer controls so that it may not move to a X direction and a Z direction relative to a some pipe body.

  In a preferred embodiment of the present invention, the first and second spacers are both formed by bending a metal wire.

  According to such a configuration, it is possible to further reduce the weight of the first and second spacers and reduce the manufacturing cost. Further, they can be prevented from becoming large resistance in the heat exchange target medium such as combustion gas by preventing them from being bulky in the heat exchanger.

  In a preferred embodiment of the present invention, a casing that houses the plurality of tubes and into which a heat exchange target medium is introduced is provided, and the first spacer includes the plurality of tubes in the Y direction. Fixing to the casing is achieved by having both end portions located on both sides of the body and the both end portions being in contact with the wall portion of the casing.

  According to such a configuration, since the first spacer is fixed to the wall portion of the casing, the positioning and fixing of the plurality of tubular bodies using the first spacer is further ensured.

  In a preferred embodiment of the present invention, each of the plurality of tubes includes a plurality of straight tube portions extending in the X direction and arranged at intervals in the Z direction, and the plurality of straight tube portions. A plurality of curved tube portions that connect the ends of each other, and the first and second spacers are intermediate in the Z direction of the plurality of meander-like tubes. It is provided at the height position.

  According to such a configuration, the meandering tube body is accurately supported, and vibrations of the meandering tube body can be appropriately suppressed by simple means.

  The spacer set provided by the second aspect of the present invention is a spacer set including first and second spacers for positioning a plurality of pipes, wherein the first spacer includes: Among the X, Y, and Z directions intersecting with each other, the plurality of first protrusions arranged at intervals in the Y direction and extending in the Z direction, and the base ends of the plurality of protrusions are connected to each other, and A plurality of base end connecting portions that can be brought into contact with the outer surfaces of the plurality of tube bodies when the plurality of protrusions are inserted between the plurality of tube bodies; The protrusion has a pair of extending portions extending in the Z direction with an interval in the X direction, and a tip connecting portion connecting the tip portions of the pair of extending portions. A posture that is arranged at intervals in the direction and extends in the Y direction. A plurality of possible second protrusions, and at least one of the plurality of second protrusions is inserted between a pair of extending portions of each first protrusion, The configuration is such that it can be set to contact with the pair of extending portions in the X direction and contact with the tip connecting portion in the Z direction.

  According to such a configuration, it is possible to appropriately obtain the same effects as described for the heat exchanger provided by the first aspect of the present invention.

  Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 11 show an example of a heat exchanger to which the present invention is applied and a configuration related thereto. In these drawings, the X, Y, and Z directions intersect each other. In the present embodiment, the X and Y directions are both horizontal directions, and the Z direction is a vertical direction.

  As clearly shown in FIG. 1, the heat exchanger HE of the present embodiment includes a casing 3 into which combustion gas as a heat exchange target medium is introduced, and a heat exchange disposed in the casing 3. A plurality of tube bodies 4 and a spacer set S for positioning and fixing the plurality of tube bodies 4 are provided.

  The casing 3 has a substantially rectangular parallelepiped shape formed using a metal plate, and an inlet 30 and an outlet 31 for combustion gas are formed at the lower and upper portions thereof. This heat exchanger HE can be used for the purpose of recovering sensible heat from the combustion gas by directly guiding the combustion gas generated by a combustor (not shown) into the casing 3. It can also be used for latent heat recovery applications. When used for a latent heat recovery application, the combustion gas after recovering sensible heat using a heat exchanger different from this heat exchanger HE is introduced into the casing 3. When latent heat recovery is performed, a strongly acidic drain (condensed water) containing components in the combustion gas is generated. Therefore, the casing 3 and the plurality of pipe bodies 4 are preferably made of a material such as stainless steel having excellent acid resistance. The The first and second spacers 1 and 2 described later, which are constituent elements of the spacer set S, are also made of the same material.

  Each of the plurality of tubular bodies 4 has a meandering shape when viewed from the front, a plurality of straight tubular body portions 40 extending in the X direction and arranged at intervals in the Z direction, and the plurality of straight shapes. This is a configuration in which a plurality of semicircular arcuate tubular body portions 41 that connect the end portions of the tubular body portion 40 are alternately connected. As clearly shown in FIG. 2, the plurality of pipe bodies 4 are provided side by side in the Y direction, and a pair of headers 48 and 49 for water entry and hot water are provided at the upper end portion and the lower end portion thereof. Are connected. However, as shown in FIG. 1, of the upper and lower ends of the plurality of tubular bodies 4, the vicinity of the headers 48 and 49 penetrates the wall portion of the casing 3 and is drawn out from the inside thereof. The plurality of tubular bodies 4 are supported by the casing 3 in the through portion (portion indicated by reference numeral n1). If only the upper and lower ends of the plurality of tubes 4 are supported on the casing 3, the intermediate portions in the vertical direction of the plurality of tubes 4 are likely to vibrate. In this embodiment, as will be described later. In addition, since a plurality of sets of spacer sets S are provided in the middle part of the plurality of pipe bodies 4 in the vertical height direction, vibrations are preferably suppressed.

  As shown in FIG. 3, the spacer set S includes first and second spacers 1 and 2. Both the first and second spacers 1 and 2 are formed by bending a metal wire such as stainless steel having a circular cross section, and have the following configuration.

  That is, the first spacer 1 is for positioning the plurality of tube bodies 4 in the Y direction. As shown in FIG. 8A, a plurality of portions bent in a U shape are arranged in series. And have a regularly connected form. The first spacer 1 includes a plurality of first protrusions 10 arranged at intervals in the Y direction and extending in the Z direction, and the plurality of first protrusions, as can be easily understood in FIG. A plurality of proximal end connecting portions 11 that connect the proximal end portions (upper end portions) of the protrusions 10 are provided. Each of the plurality of proximal end connecting portions 11 has a semicircular arc shape that bulges upward, and is arranged in two rows in a staggered manner at intervals in the X direction, and the proximal end connecting portions 11a located in one row, It is divided into a base end connecting portion 11b located in the other row.

  As shown in FIGS. 10 and 11, in the first spacer 1, the plurality of first protrusions 10 are inserted between the plurality of straight tube portions 40 arranged in the Y direction. Thus, the plurality of tubes 4 are attached. However, in this mounted state, the proximal end connecting portion 11 a is set to abut against the outer surface of the straight tubular body portion 40, and the proximal end connecting portion 11 b is positioned between the straight tubular body portions 40. The plurality of projecting portions 10 are portions for insertion between the straight tubular body portions 40. In the present embodiment, as shown in FIGS. 4 and 6, the first spacer 1 in the Y direction is provided. The projecting portions 10 ′ at both ends and the projecting portions 10 ″ adjacent thereto are not inserted between the straight tubular body portions 40, and the dimension between the straight tubular body portion 40 and the side wall portion 32 of the casing 3. It is used as a part for defining L1.The protrusions 10 'at both ends are shaped so as to be able to stably contact the side wall 32 of the casing 3.

  8A and 8B, each of the first protrusions 10 includes a pair of extending portions 10a extending in the Z direction with an interval La in the X direction, and the pair of these protruding portions 10a. It has the front-end | tip connection part 10b which connects the lower end front-end | tip parts of the extending | stretching part 10a. The tip connecting portion 10b has a semicircular arc shape that bulges downward. As shown in FIG. 8C, the length L2 of the first protrusion 10 in the Z direction is longer than the arrangement pitch P1 of the straight tube portions 40 in the Z direction. As a result, when the first spacer 1 is mounted on the plurality of tubes 4, each of the upper and lower two-stage straight tube portions 40 in which the first protrusions 10 are adjacent in the Z direction. By being inserted into the gap, the arrangement pitch P2 in the Y direction of the upper and lower two-stage straight tubular body portions 40 can be defined collectively. The tip connecting portion 10b is configured to be positioned below the lower straight tube portion 40.

  The second spacer 2 is for suppressing the relative movement between the first spacer 1 and the plurality of tube bodies 4. For easy understanding in FIG. 9C, the second spacer 2 includes a plurality of second protrusions 20 that are arranged at intervals in the Z direction and extend in the Y direction, and the plurality of second protrusions 20. A plurality of base end connecting portions 21 a and 21 b that connect one end portions of the protruding portion 20 are provided. The plurality of base end connecting portions 21a have a semicircular arc shape, whereas the base end connecting portions 21b have a linear shape extending in the Z direction. Each second protrusion 20 has a pair of extending portions 20a extending in the Y direction with an interval in the X direction, and a tip connecting portion 20b connecting the tip portions of the pair of extending portions 20a.

  As shown in FIG. 10, the second spacer 2 is attached to the plurality of tubes 4 from one side in the state where the first spacer 1 is attached to the plurality of tubes 4 in advance. This mounting operation is performed in a state where the plurality of pipe bodies 4 are not yet accommodated in the casing 3 and one side thereof is open. The mounting of the second spacer 2 is performed by sandwiching a plurality of upper tubular parts 40 vertically by a pair of second protrusions 20 on the upper side of the second spacer 2 and a pair of lower second parts. The plurality of straight tubular body portions 40 on the lower side are sandwiched vertically by the two projecting portions 20. At that time, the second projecting portion 20 is inserted between the pair of extending portions 10 a of each first projecting portion 10. The width Lb in the X direction of the second protrusion 20 and the interval La in the X direction between the pair of extending portions 10a have a relationship of Lb ≦ La. In addition, about the 2nd projection part 20 located in the uppermost stage, it arrange | positions between base end connection parts 11a and 11b. As a result, as shown in FIG. 5, the first spacer 1 engages with the second spacer 2 so that movement in the X direction is restricted. About the 2nd projection part 20 (20 ') located in the lowest step of the 2nd spacer 2, it is arranged above tip connection part 10b of the 1st spacer 1, and this tip connection part 10b in the Z direction Can be engaged. As a result, even if an upward moving force acts on the first spacer 1, the first spacer 1 moves upward because the tip connecting portion 10 b comes into contact with the second protrusion 20 ′. It will be appropriately suppressed.

  The plurality of tubular bodies 4 are accommodated in the casing 3 in a state where the mounting work of the first and second spacers 1 and 2 is completed. In this accommodated state, both end portions 19 in the Y direction of the first spacer 1 (where the first protrusions 10 ′ are formed) are in contact with both side wall portions 32 of the casing 3. As a result, the first spacer 1 is positioned in the Y direction with respect to the casing 3. Moreover, the dimension of the clearance gap between the straight tube part 40 located in the outermost row of a Y direction and the side wall part 32 of the casing 3 is prescribed | regulated. Furthermore, side wall portions 32 exist on both sides in the Y direction of the second spacer 2, and the side wall portions 32 are separated from the plurality of straight tubular body portions 40 in the Y direction by the second spacer 2. It is designed to play a role in preventing this.

  Next, the operation of the heat exchanger HE will be described.

  First, if only the upper and lower ends of the plurality of pipes 4 are supported by the casing 3, the middle part in the vertical height direction of the plurality of pipes 4 becomes unstable, and vibration is likely to occur in these parts. In the heat exchanger HE, as described below, the above-described problems are solved by the action of the first and second spacers 1 and 2. That is, the plurality of first protrusions 10 of the first spacer 1 are inserted between the plurality of straight tube portions 40, and the arrangement pitch of these straight tube portions 40 in the Y direction is set. P2 is specified. Further, both end portions 19 of the first spacer 1 are in contact with both side wall portions 32 of the casing 3, and a dimension L1 of a gap between the outermost straight tube portion 40 and the both side wall portions 32 of the casing 3 is also set. It prescribes. Therefore, as long as the first spacer 1 does not come off from the plurality of straight tube portions 40 (this is prevented by the second spacer 2 as will be described later), the plurality of straight tube portions. 40 is appropriately positioned and fixed in the Y direction, and the tube body 4 is suppressed from vibrating in the Y direction.

  On the other hand, the second spacer 2 suitably restricts the movement of the first spacer 1 in the X direction and the Y direction with respect to the plurality of straight tube portions 40. More specifically, as shown in FIGS. 4 and 5, the second protrusion 20 is formed between the pair of extending portions 10 a of each first protrusion 10 or between the proximal end connecting portions 11 a and 11 b. The first spacer 1 moves in the X direction due to the contact between the above-described portions even if a moving force in the X direction acts on the first spacer 1. Are preferably regulated. If the second spacer 2 itself is easy to move in the X direction, the first spacer 1 may move by pushing the second spacer 2 in the X direction. When mounting on the tubular body portion 40, it is possible to set the second spacer 2 so that it does not move easily, and the above-described fear can be appropriately eliminated.

  Further, as described with reference to FIG. 5, the second protrusion 20 at the lowermost stage of the second spacer 2 is located above the tip connecting portion 20 b, and the tip connecting portion 20 b is lifted. Consequently, the first spacer 1 is prevented from rising. Therefore, there is no possibility that the first spacer 1 will inadvertently rise and come off from the plurality of straight tube portions 40. In addition, the proximal end connecting portion 11a of the first spacer 1 is in contact with the plurality of straight tubular body portions 40, and has a height lower than that of the plurality of straight tubular body portions 40. It is difficult to lower. For this reason, the 1st spacer 1 will be in the state where movement to any of the upper direction and the downward direction was controlled.

  As described above, in the present embodiment, since the second spacer 2 is provided, the relative movement in the X direction and the Z direction between the first spacer 1 and the plurality of straight tube portions 40 is appropriate. Regulated by Therefore, the plurality of straight tubular body portions 40, and thus the plurality of tubular bodies 4, can be reliably and firmly supported by the first spacer 1, and the occurrence of vibration of the plurality of tubular bodies 4 can be made more difficult. In order to prevent the vibration of the plurality of tube bodies 4, as shown in FIG. 1A, two locations indicated by reference numeral n <b> 1 on one end side in the width direction (the left-right direction in the figure) of each tube body 4 are the casing 3. While supported by one side wall, it is more preferable to position and fix at least one place (two places in the drawing) on the other end side in the width direction of each tubular body 4 using the spacer set S. Since both the first and second spacers 1 and 2 are manufactured by bending a small-diameter metal wire, they can be made lightweight and compact, and their manufacturing cost can be reduced. it can. In addition, the operation of attaching the first and second spacers 1 and 2 to the plurality of pipes 4 is performed by placing the first and second protrusions 10 and 20 above or over the plurality of straight pipe parts 40. It can be carried out easily and quickly by inserting between them from the side, and the assembly workability of the heat exchanger HE can be improved.

  When the combustion gas is introduced into the casing 3 and heat recovery is performed by the plurality of pipes 4, the combustion gas passes between the plurality of pipes 4, but the first and second spacers 1 and 2. As described above, it is formed by bending a small-diameter metal wire, and it is possible to prevent a large area from blocking the plurality of tubular bodies 4. Therefore, the exhaust resistance of the heat exchanger HE can be kept small.

  FIG. 12 shows another embodiment of the present invention. In the figure, the same or similar elements as those in the above embodiment are given the same reference numerals as in the above embodiment.

  FIG. 12 is a side view of the plurality of tube bodies 4A, and each tube body 4A has a meandering shape in front view like the plurality of tube bodies 4 shown in FIGS. The straight tubular body portion 40 and the plurality of curved tubular body portions 41 are alternately connected. However, the two straight tubular body portions 40 adjacent in the vertical direction are displaced by an appropriate dimension L7 in the horizontal direction, and the plurality of tubular bodies 4A have a meandering shape even in a side view shown in FIG. It has become. According to such a configuration, as compared with the tubular body 4 shown in FIGS. 1 and 2, the vertical arrangement pitch between the straight tubular body portions 40 is shortened, and the overall height of the tubular body 4A is reduced. (If the entire height of the tubes 4 and 4A is made uniform, the tube 4A can increase the heat transfer area and increase the amount of heat recovery. ). When such a tubular body 4A is to be positioned, for the first spacer 1A, the first protrusion 10A is made to correspond to the angle θ at which the straight tubular body 40 is displaced, The protruding portion 10A may be inclined. The first protrusions 10A 'located at both end portions 19 of the first spacer 1A are portions for contacting the vertical side wall portions (not shown) of the casing, and thus do not need to be inclined. The second spacer 2A may have a shape in which the second protruding portion 20A extends in the horizontal direction, but the proximal end connecting portion 21A has an inclination angle θ of the straight tubular body portion 40 in the upper and lower two stages. A corresponding shape may be used.

  The present invention is not limited to the contents of the above-described embodiment. The specific configuration of each part of the heat exchanger and the spacer set according to the present invention can be varied in design in various ways.

  As the tube for heat exchange, it is possible to use a tube having a form different from that of the meandering tube, for example, a tube extending in a straight line, a tube wound in a spiral shape, or the like. In addition, the heat exchanger referred to in the present invention may be of any type for sensible heat recovery and latent heat recovery. For example, high-temperature exhaust gas other than the combustion gas can be used as the heat exchange target medium.

  The first and second spacers can be easily formed by bending a wire, but can also be manufactured using a material other than the wire. In the above-described embodiment, the first and second spacers are attached to a plurality of tubular body parts arranged in two upper and lower stages, and positioning and fixing of the two upper and lower pipe body parts are attempted. Further, it is also possible to adopt a configuration in which positioning and fixing of the tube sections arranged in a single stage or positioning of the tube sections arranged in three or more stages is attempted. The X, Y, and Z directions in the present invention are directions intersecting each other, but these directions can be directions other than the horizontal direction and the vertical direction. The spacer set referred to in the present invention can also be used for positioning pipes other than the heat exchanging pipe.

(A) is front sectional drawing of the heat exchanger which concerns on this invention, (b) is the principal part sectional drawing of the right side surface. It is a perspective view which shows the some tubular body used with the heat exchanger shown in FIG. It is a principal part perspective view which shows the structure of the mounting location of the spacer set in the heat exchanger shown in FIG. It is IV-IV arrow principal part plane sectional drawing of Fig.1 (a). It is VV principal part sectional drawing of FIG. It is VI-VI principal part sectional drawing of FIG. It is principal part sectional drawing which made it easy to understand the mounting state of a 2nd spacer by showing the 1st spacer of the principal part sectional drawing shown in FIG. 6 with a virtual line. (A) is a perspective view which shows the 1st spacer used with the heat exchanger shown in FIG. 1, (b) is a side view of the arrow VIIIb of (a), (c) is It is a front view of arrow VIIIc of (a). (A) is a perspective view which shows the 2nd spacer used with the heat exchanger shown in FIG. 1, (b) is a side view of arrow IXb of (a), (c) is It is a front view of arrow IXc of (a). It is a principal part perspective view which shows an example of the state which attaches the 1st and 2nd spacer to a some tubular body sequentially. It is XI-XI sectional drawing of FIG. It is a principal part side view which shows the other example of this invention.

Explanation of symbols

HE Heat exchanger S Spacer set 1 First spacer 2 Second spacer 3 Casing 4 Tubing body 10 First protrusion 10a Extension part (of the first protrusion)
10b Tip connecting portion (of the first protrusion)
11 Base end joint (of the first spacer)
19 Both ends (of the first spacer)
20 Second protrusion 20a Extension part (second protrusion)
21a, 21b Base end joint (of the second spacer)
32 side wall (casing)
40 Straight tube portion 41 Curved tube portion

Claims (7)

Among the X, Y, and Z directions intersecting with each other, a plurality of tubes for heat exchange, all or part of which extend in the X direction and are arranged in the Y direction,
A spacer for positioning the plurality of tubes,
A heat exchanger comprising:
As the spacer, there are first and second spacers,
The first spacer has a plurality of first protrusions arranged at intervals in the Y direction and extending in the Z direction, and the plurality of first protrusions are formed between the plurality of tube bodies. It is possible to define the arrangement pitch in the Y direction of the plurality of tubes by being inserted in between,
The second spacer has a plurality of second protrusions arranged at intervals in the Z direction and extending in the Y direction, and the plurality of second protrusions attach the plurality of tubes to the Z direction. It can be attached to the plurality of tubes so as to be sandwiched in the direction,
When the second spacer is attached to the plurality of tubes, the first and second spacers are engaged with each other so as to restrict relative movement between the first spacer and the plurality of tubes. A heat exchanger characterized in that it is configured as possible.   The first and second spacers move in the direction in which the first spacer moves in the X direction and in the Z direction, the plurality of first protrusions come out from between the plurality of tubes. The heat exchanger according to claim 1, wherein the movement is engageable so as to be regulated together. The first spacer has a plurality of base end connecting portions connecting base end portions of the plurality of first protrusions, and the plurality of base end connecting portions are the plurality of first protrusions. Can be brought into contact with the outer surface of the plurality of tubes when inserted between the plurality of tubes.
Each of the first protrusions has a pair of extending portions extending in the Z direction with an interval in the X direction, and a tip connecting portion connecting the tip portions of the pair of extending portions,
Since the plurality of second protrusions are disposed between a pair of extending portions of the first protrusions, movement of the first spacer in the X direction is restricted,
A configuration in which movement of the first spacer in the Z direction is restricted by any of the plurality of second protrusions being arranged so as to be able to contact the tip connecting portion in the Z direction. The heat exchanger according to claim 1 or 2, wherein   The heat exchanger according to any one of claims 1 to 3, wherein each of the first and second spacers is configured by bending a metal wire. A casing that houses the plurality of tubes and into which a heat exchange target medium is introduced;
The first spacer has both end portions located on both sides of the plurality of tubular bodies in the Y direction, and the both end portions are in contact with the wall portion of the casing, thereby being fixed to the casing. The heat exchanger according to any one of claims 1 to 4, which is illustrated. Each of the plurality of tubular bodies includes a plurality of straight tubular body portions extending in the X direction and arranged at intervals in the Z direction, and a plurality of curved shapes connecting ends of the plurality of straight tubular body portions. It is a serpentine tubular body that is alternately connected to the tubular body part,
The heat exchanger according to any one of claims 1 to 5, wherein the first and second spacers are provided at intermediate height positions in the Z direction of the plurality of meandering tubes. A spacer set comprising first and second spacers for positioning a plurality of tubes,
The first spacer includes a plurality of first protrusions arranged in the Y direction and extending in the Z direction among the X, Y, and Z directions intersecting with each other, and base ends of the plurality of protrusions And having a plurality of proximal end connecting portions that can be brought into contact with the outer surfaces of the plurality of tubes when the plurality of protrusions are inserted between the plurality of tubes. And
Each of the first protrusions has a pair of extending portions extending in the Z direction with an interval in the X direction, and a tip connecting portion connecting the tip portions of the pair of extending portions,
The second spacer has a plurality of second protrusions that are arranged at intervals in the Z direction and can be in a posture extending in the Y direction, and the plurality of second protrusions At least one is inserted between the pair of extending portions of each of the first protrusions so as to abut against the pair of extending portions in the X direction and to the tip connecting portion Z A spacer set characterized in that it can be set to an arrangement that abuts in a direction.

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