JP3222286U - Heat exchanger - Google Patents

Abstract

A heat exchanger having high heat exchange efficiency according to a space to be installed is provided. A heat exchanger is a tube member formed using a metal material, and is connected to two outflow inlets of a heat exchange medium and a communication flow path that connects the two outflow inlets by facing each other. A plurality of tube members 40 formed so as to constitute a flat heat exchange tube 30 having 44 and 45 are laminated so that two outflow inlets of adjacent heat exchange tubes are aligned. The heat exchanger performs heat exchange between a heat exchange medium flowing in the heat exchange tube and a heat exchange medium flowing between adjacent heat exchange tubes. The tube member is formed so that the two outflow inlets are aligned in parallel with the flow direction of the heat exchange medium at the center position in the longitudinal direction, and the communication channel is W-shaped from one of the two outflow inlets to the other. Alternatively, it is formed as two mirror-symmetrical flow paths in a shape in which one or more V-characters are connected to a W-shape. [Selection] Figure 3

Description

  The present invention relates to a heat exchanger, and more particularly to a heat exchanger configured by laminating a plurality of flat heat exchange tubes.

  Conventionally, as this type of heat exchanger, the tube member is provided with two outlet through holes so as to be arranged in series in the lateral direction at the center in the longitudinal direction, and these two outlets through the outlet It has been proposed that a heat exchange tube is formed by forming a U-shaped and mirror-symmetrical two communication flow paths communicating holes and forming a heat exchange tube (see, for example, Patent Document 1). In this heat exchanger, when the heat exchange medium is supplied and discharged in the direction perpendicular to the longitudinal direction, two through holes for outlet and inlet are formed at both ends in the longitudinal direction of the rectangular heat exchange tube. In addition, the flow passage width of the heat exchange medium can be made wider by one of the outflow inlet through holes as compared with the one in which the communication passage connecting the two outflow inlet through holes is formed. The flow passage width effective for heat exchange can be widened.

JP, 2017-072331, A

  However, in the above-described heat exchanger, two outflows occur when there is not a sufficient length in the longitudinal direction of the tube member as a space for installing the heat exchanger, and there is an excessive length in the short direction of the tube member. In the case of two U-shaped communication channels communicating the inlet through holes, it may be difficult to maintain good heat exchange efficiency.

  The heat exchanger according to the present invention is mainly intended to provide a heat exchanger having a high heat exchange efficiency depending on the installation space.

  The heat exchanger of the present invention adopts the following means in order to achieve the above-mentioned main object.

The heat exchanger of the present invention is
A tube member formed to constitute a flat heat exchange tube having two outflow inlets / outlets of a heat exchange medium and a communicating flow passage communicating the two outflow inlets by joining facing each other using a metal material And a plurality of stacked layers so that the two inlets and outlets of the heat exchange tubes adjacent to each other are aligned, and flowing between the heat exchange tubes adjacent to the heat exchange medium flowing into the heat exchange tubes. A heat exchanger for exchanging heat with an exchange medium,
The tube members are formed such that the two outlet ports are arranged in series in the direction of the flow of the heat exchange medium at a longitudinally central position,
The communication channel is formed as two mirror-symmetrical two channels in a shape in which one or more V-shapes are connected in a W shape or a W shape from one of the two outflow inlets to the other.
It is characterized by

  In the heat exchanger of the present invention, heat exchange is performed between the heat exchange medium flowing in the plurality of stacked heat exchange tubes and the heat exchange medium flowing between the adjacent heat exchange tubes. The tube member constituting the heat exchange tube is formed with two flow inlets and outlets of the heat exchange medium and a communication channel communicating the two flow inlets, and in particular, the two flow inlets exchange heat. It is formed to be in series in the direction of the flow of the medium. By forming the two outflow inlets in this manner, one of the outflow inlets is formed as compared to one in which the two outflow inlets are arranged in series in the direction perpendicular to the flow direction of the heat exchange medium. The flow passage width of the heat exchange medium can be widened by three, and the flow passage width effective for heat exchange can be broadened. As a result, the heat exchange efficiency can be improved. Further, since the two outflow inlets are formed in series in the direction of the flow of the heat exchange medium, the heat exchange medium is supplied to one of the two outflow inlets on the downstream side of the flow of the heat exchange medium. If the heat exchange medium is discharged from the other upstream side of the flow of the heat exchange medium, the flow of the heat exchange medium as a whole and the flow of the heat exchange medium can be countercurrent. The heat exchange efficiency can be further improved. Furthermore, the communication flow path that connects the two outflow and inlets is formed as two mirror-symmetrical two flow paths in a shape in which one or more V-shaped W-shaped or W-shaped connected from one to the other of the two outflow inlets Thus, the flow path can be adjusted in accordance with the installation space in the flow direction of the heat exchange medium. Of course, the heat exchange medium can be supplied to the two flow paths substantially equally, and the heat exchange can be performed substantially equally with the two flow paths. As a result of these, the heat exchange efficiency can be improved. As a result of these, a heat exchanger with good heat exchange efficiency can be obtained according to the space to be installed.

  In the heat exchanger according to the present invention, the communication flow channel may be formed such that the flow channel cross-sectional area of the bent portion is 1/3 or less of the flow channel cross-sectional area of the straight portion. . In this way, the uneven flow of the heat exchange medium can be suppressed, and the heat exchange efficiency can be improved.

  In the heat exchanger of the present invention, the communication flow channel may be formed such that the depth of the central flow channel disposed on the center side is greater than the depth of the edge flow channels disposed on the edge side. Good. In this case, the communication flow channel may be formed such that the width of the central flow channel is narrower than the width of the edge flow channel.

  In the heat exchanger of the present invention, the tube member may be formed with fins projecting in the flow direction of the heat exchange medium, on at least one of the inflow side or the outflow side of the heat exchange medium. By so doing, heat exchange by heat conduction by the fins can also be performed, and heat exchange efficiency can be improved.

It is a block diagram which shows the outline of a structure of the heat exchanger 20 of an Example. It is sectional drawing which shows typically the AA cross section in FIG. It is a block diagram which shows the outline of a structure of the tube 30 for heat exchange. It is sectional drawing which shows the BB cross section in FIG. It is sectional drawing which shows the CC cross section in FIG. It is sectional drawing which shows typically the cross section corresponded to the AA surface in FIG. 1 of the tube 130 for heat exchange of a modification. It is a block diagram which shows the outline of a structure of the tube 230 for heat exchange of a modification.

  Next, the form for carrying out the present invention is explained using an example.

  FIG. 1 is a schematic view showing the configuration of a heat exchanger 20 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing an A-A cross section in FIG. The heat exchanger 20 according to the embodiment is used for a refrigeration cycle such as an air conditioner or a refrigeration apparatus or a cooling apparatus for an apparatus that operates with heat generation, and is configured by two tube members 40 as shown in FIG. A laminate 22 configured by laminating a plurality of heat exchange tubes 30, a plate 23 disposed on both sides in the arrangement direction of the laminates 22 (vertical direction in the drawing), and a longitudinal direction of the heat exchange tubes (in the drawing A plate 24 disposed on both sides in the left-right direction, a supply pipe 27 and a discharge pipe 28 attached to the inflow channel 25 and the outflow channel 26 of the heat exchange medium formed in the laminate 22 and the plate 23; Equipped with The heat exchanger 20 is a heat exchange tube 30 adjacent to a heat exchange medium such as hydrofluorocarbon or water supplied from the inflow passage 25 to the later-described communication passages 44 and 45 formed in the heat exchange 30. Heat exchange or heat exchange with the heat exchange medium such as air flowing in the gap between the heat exchange medium or the heat exchange medium. In FIG. 2, the white arrows described above the supply pipe 27 and the discharge pipe 28 indicate the directions of supply and discharge of the heat exchange medium, and the white arrows described on the left and right of the heat exchanger 20 are , Shows the flow direction of the heat exchange medium.

  FIG. 3 is a schematic view showing a configuration of a heat exchange tube. FIG. 4 is a cross-sectional view showing a cross section B-B in FIG. FIG. 5 is a cross-sectional view showing a cross section taken along the line C-C in FIG.

The heat exchange tube 30 is a so-called clad plate material having a thickness of 0.2 mm obtained by joining a plate material and a brazing material by arranging a brazing material such as an aluminum silicon alloy on both surfaces of an aluminum plate and integrally rolling it. It is constituted by facing and joining tube members 40 which gave press processing, punching processing, and the like. In the tube member 40, as shown in FIG. 3, two outflow / inlet through holes 41a and 41b are formed at the center in the longitudinal direction (left and right direction in the drawing) so as to be arranged in series in the lateral direction. Two W-shaped communication channels 44, 45 are formed to communicate the two outflow / inlet through holes 41a, 41b. Further, flange portions 42a and 42b around the two outflow / inlet through holes 41a and 41b are formed.

  The flanges 42a and 42b are formed to be joined to the flanges 42a and 42b of the heat exchange tubes 30 adjacent to each other when the heat exchange tubes 30 are stacked. Thereby, as shown in FIG. 5, while maintaining the space | interval of the tube 30 for heat exchange to adjoin at a predetermined space | interval, the through-hole 41a, 41b of outflow inlet / outlet vicinity of the both ends of the tube 30 for heat exchange connects in the lamination direction. Thus, the heat exchange medium inflow channel 25 and the outflow channel 26 are formed.

  The communication flow channels 44 and 45 are formed as flow channels that are mirror-symmetrical with respect to a straight line (a line in the vertical direction in FIG. 3) passing through the centers of the two outflow / inlet through holes 41a and 41b. The communication channels 44, 45 are each formed by two edge side channels 44a, 44d, 45a, 45d formed as straight channels communicating with the through holes 41a, 41b in the longitudinal direction of the tube member 40, Two central side channels 44b, 44c, 45b, 45c formed in the same width and the same depth in parallel with the edge side channels 44a, 44d, 45a, 45d and the edge side channels 44a, 44d, 45a, 45d End communication channels 44e, 44g, 45e, 45g that connect the central channels 44b, 44c, 45b, 45c at the longitudinal ends of the tube member 40, and the central channels 44b, 44c, 45b, 45c Are connected by a central communication channel 44f, 45f which communicates at substantially the center in the longitudinal direction of the tube member 40. That is, the communication flow channel 44 includes the edge side flow channel 44a, the end portion connection flow channel 44e, the center side flow channel 44b, the center connection flow channel 44f, the center side flow channel 44c, the end connection flow channel 44g, and the edge side flow channel 44d. It is configured to be W-shaped. Further, the communication flow channel 45 includes the edge side flow channel 45a, the end portion connection flow channel 45e, the center side flow channel 45b, the center connection flow channel 45f, the center side flow channel 45c, the end connection flow channel 45g, and the edge side flow channel 45d. It is configured to be W-shaped. The end connection channels 44e, 44g, 45e, 45g and the central communication channels 44f, 45f have channel cross-sectional areas that are the edge channels 44a, 44d, 45a, 45d or the center channels 44b, 44c, 45b, 45c. It is formed to be 1/3 or less of the flow passage cross-sectional area of Thereby, the heat exchange medium is prevented from being unevenly distributed.

  In the embodiment, the tube members 40 are stacked alternately so that the heat exchange tubes 30 are stacked to form the stacked body 22, and the plates 23 and 24, the supply pipe 27, and the discharge pipe 28 are assembled to this. By heating this at a temperature (for example, 610 ° C. or 620 ° C. or the like) higher than the melting point of the brazing material and lower than the melting point of the plate, the contact portion is joined (brazing) to complete the heat exchanger 20. That is, the facing contact portions of the tube members 40 constituting the heat exchange tube 30 are joined, and the contact portions of the flange portions 42a and 42b of the adjacent heat exchange tube 30 are joined, and at the same time the plates 23, 24 and the supply The pipe 27 and the discharge pipe 28 are joined.

  In the heat exchanger 20 configured in this manner, a heat exchange medium such as hydrofluorocarbon or water is supplied from the supply pipe 27 to the inflow channel 25 formed by the two outflow inlet through holes 41a and 41b, The fluid flows through the communication channels 44 and 45 of the replacement tube 30, flows into the outlet channel 26 formed by the two outlet / inlet through holes 41a and 41b, and is discharged from the outlet pipe 28. On the other hand, a heat exchange medium such as air is supplied to the heat exchange tubes 30 from the outflow flow channel 26 side, flows through the gaps between the heat exchange tubes 30, and exchanges heat with the heat exchange medium, It is discharged from the inflow channel 25 side. Thus, by supplying and discharging the heat exchange medium and the heat exchange medium, it is possible to make the flow of the heat exchange medium as a whole and the flow of the heat exchange medium opposite to each other.

  In the heat exchanger 20 of the embodiment described above, the tube member 40 is provided with the two outlet / inlet through holes 41a and 41b so as to be arranged in series in the lateral direction at the center in the longitudinal direction, and It forms so that it may have two communication flow paths 44 and 45 of W shape of which two penetration mouth holes 41a and 41b are connected, and heat exchange tube 30 is constituted. As a result, when the heat exchange medium is supplied and discharged in the direction perpendicular to the longitudinal direction, two outflow / inlet through holes are formed at both ends of the rectangular heat exchange tube in the longitudinal direction As compared with the one in which the communication flow passage communicating the two outflow inlet through holes is formed, the flow passage width of the heat exchange medium can be widened by one of the outflow inlet through holes, and the heat exchange is performed. The effective channel width can be increased. Further, even when the installation space is long in the short direction of the heat exchange tube 30, the two communication flow channels are in the W shape, so heat is compared to the two communication flow channels in the U shape. A heat exchanger with high exchange efficiency can be obtained. Further, by forming the two communication flow paths in a W shape, the outlet side of the heat exchange medium (the inlet side of the heat exchange medium) and the folded back side are compared to those in which the two communication flow paths are in a U shape. Since the temperature difference with the side can be reduced, the heat exchange efficiency can be improved. Furthermore, since the two outflow / inlet through holes 41a and 41b are formed in series in the direction of the flow of the heat exchange medium, the two outflow / inlet through holes 41a and 41b are formed. The heat exchange medium is supplied with the downstream side of the flow of the heat exchange medium of the flow paths 22 and 24 as the inflow flow path 25 and the heat exchange medium is supplied with the upstream side of the flow of the heat exchange medium as the outflow flow path 26 By discharging the heat exchange medium, the flow of the heat exchange medium as a whole and the flow of the heat exchange medium can be opposed to each other, and the heat exchange efficiency can be further improved. In addition, by forming the communication flow channels 44 and 45 as two W-shaped and mirror-symmetrical flow channels from one to the other of the two through holes 41a and 41b, two communication flow channels 44, The heat exchange medium can be supplied substantially uniformly to 45, and heat exchange can be performed substantially equally by the two communication flow paths 44 and 45. As a result of these, the heat exchange efficiency can be improved. Thus, since the tube member 40 is formed as mirror image symmetry, the tube member 40 having a single shape may be formed, the number of parts can be reduced, and the assemblability can be improved.

  In the heat exchanger 20 of the embodiment, the cross-sectional area of the end communication channels 44e, 44g, 45e, 45g and the central communication channels 44f, 45f that constitute the communication channels 44, 45 is the edge side flow channel 44a, The heat exchange medium flowing in the communication flow channels 44 and 45 is deflected by forming it to be 1/3 or less of the flow channel cross-sectional area of the flow channels 44d, 45a and 45d and the central side flow channels 44b, 44c, 45b and 45c. The heat exchange efficiency can be improved. This is based on the fact that the temperature difference in the stacking direction becomes large when the heat exchange medium is drifted, and the heat exchange efficiency is lowered.

  In the heat exchanger 20 of the embodiment, each of the two edge side channels 44a, 44d, 45a, 45d constituting the communication channels 44, 45 and the two center side channels 44b, 44c, 45b, 45c have the same width. And the same depth. However, as shown in the heat exchange tube 130 of the modified example of FIG. 6, the depth of each of the two center side channels 144b, 144c, 145b, 145c is greater than that of each of the two edge side channels 144a, 44d, 45a, 45d. It may be formed to be deep. In this case, it is preferable that the width of each of the two central channels 144b, 144c, 145b, and 145c be narrower than the width of each of the two edge channels 144a, 44d, 45a, and 45d.

  In the heat exchanger 20 of the embodiment, the heat exchange tube 30 is not provided with the fins, but as shown in the heat exchange tube 230 of the modified example of FIG. The fin portion 248 may be formed on the tube member 240 so as to be the right side in 2) or the outflow side (left side in FIG. 2). In this case, the heat exchange efficiency can be improved by the heat conduction by the fin portion 248. In FIG. 7, the fin portion 248 is formed only on the upper side in the drawing, but may be formed on both the upper side and the lower side in the drawing.

  In the heat exchanger 20 of the embodiment, the communication flow channels 44 and 45 are formed in a W shape, but may be formed in a shape in which one or more Vs are connected in a W shape. In this case, the number of the letter V and the letter V may be determined appropriately according to the installation space. In this way, the heat exchanger can have high heat exchange efficiency depending on the installation space.

  In the heat exchanger 20 of the embodiment, the flanges 42a and 42b are formed around the outlet and inlet through holes 41a and 41b, but instead of the flanges 42a and 42b, the burring is formed by burring. It is good also as things. In this case, the diameter of one burring portion is slightly smaller than or slightly larger than the diameter of the other burring portion so that one burring portion of the two burring portions of the tube member fits into the other burring portion. It is preferable to form large. By laminating tube members having such burring portions so that adjacent heat exchange tubes 30 are alternately stacked, the burring portions of the facing tube members can be fitted together.

In the heat exchanger 20 of the embodiment, the tube member 40 is formed by using a clad plate material having a thickness of 0.2 mm in which a brazing material such as an aluminum silicon alloy is bonded to both sides of an aluminum plate material. The tube member 40 may be formed using a clad plate material of aluminum and aluminum alloy thinner than 2 mm or a clad plate material of aluminum and aluminum alloy thicker than 0.2 mm. Alternatively, the tube member may be formed using a clad plate material in which a brazing material such as copper or nickel is joined to both sides of a stainless steel plate or a plate material obtained by plating stainless steel on both sides of a plate material. Furthermore, the tube member may be formed using a plate material in which a brazing material is joined to or plated on both sides of a copper plate material.

  As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all by such an Example, It is a form which becomes various within the range which does not deviate from the summary of this invention. Of course it can be implemented.

  The present invention is applicable to the manufacturing industry of heat exchangers and the like.

  Reference Signs List 20 heat exchanger, 22 stacks, 23, 24 plates, 25 inflow channels, 26 outflow channels, 27 supply pipes, 28 discharge pipes, 30, 130, 230 tubes for heat exchange, 40, 240 tube members, 41a, 41b outlet through holes 42a, 42b flanges 44, 45 communication channels 44a, 44d, 45a, 45d, 144a, 144d, 145a, 145d edge channels, 44b, 44c, 45b, 45c, 144b , 144c, 145b, 145c central side channel, 44e, 44g, 45e, 45g end communication channel, 44f, 45f central communication channel, 248 fin portion.

Claims (5)

A tube member formed to constitute a flat heat exchange tube having two outflow inlets / outlets of a heat exchange medium and a communicating flow passage communicating the two outflow inlets by joining facing each other using a metal material And a plurality of stacked layers so that the two inlets and outlets of the heat exchange tubes adjacent to each other are aligned, and flowing between the heat exchange tubes adjacent to the heat exchange medium flowing into the heat exchange tubes. A heat exchanger for exchanging heat with an exchange medium,
The tube members are formed such that the two outlet ports are arranged in series in the direction of the flow of the heat exchange medium at a longitudinally central position,
The communication channel is formed as two mirror-symmetrical two channels in a shape in which one or more V-shapes are connected in a W shape or a W shape from one of the two outflow inlets to the other.
A heat exchanger characterized by The heat exchanger according to claim 1, wherein
The communication flow channel is formed such that the flow channel cross-sectional area of the bent portion is 1/3 or less of the flow channel cross-sectional area of the straight portion.
Heat exchanger. The heat exchanger according to claim 1 or 2, wherein
The communication flow channel is formed such that the depth of the central flow channel disposed on the center side is greater than the depth of the edge flow channel disposed on the edge side.
Heat exchanger. The heat exchanger according to claim 3, wherein
The communication channel is formed such that the width of the central channel is narrower than the width of the edge channel.
Heat exchanger. A heat exchanger according to any one of the claims 1 to 4, wherein
In the tube member, a fin is formed on at least one of the inflow side and the outflow side of the heat exchange medium to be protruded in the flow direction of the heat exchange medium.
Heat exchanger.

Images