JP5557157B2 - Multi-row heat exchanger - Google Patents

Description

  The present invention relates to a multi-row heat exchange device in which, for example, parallel flow heat exchangers are combined in a plurality of rows.

  In general, when a parallel flow type heat exchanger is used in combination with a plurality of rows, depending on the configuration of the flow of the heat medium (refrigerant), it is necessary to communicate with each other by using piping or the like in order to connect the header pipes to each other. . One example will be described with reference to a schematic development view shown in FIG.

  In FIG. 8, the heat exchanger 1A in the first row and the heat exchanger 1B in the second row are respectively composed of a pair of header pipes 2a and 2b, and parallel heat exchange tubes installed between the header pipes 2a and 2b. 3 and corrugated fins 4 interposed between adjacent heat exchange tubes 3. In the first row of heat exchangers 1A, a passage is defined by a partition plate 5a disposed at a position 1/3 on the upper side of one header pipe 2a, and a heat medium (hereinafter referred to as a refrigerant) is formed on the upper end side of the header pipe 2a. The inflow pipe 6 is connected. In addition, a passage is defined by a partition plate 5b disposed at the lower third position of the other header pipe 2b, and a refrigerant outflow pipe 7 is connected to the lower side of the header pipe 2b.

  On the other hand, the heat exchanger 1B in the second row is partitioned by the partition plates 5c, 5d; 5e, 5f, which are respectively disposed at the three equally divided positions of the header pipes 2a, 2b. Refrigerant inflow pipes 8a, 8b, and 8c are connected to the three passages. Further, refrigerant outflow pipes 8d, 8e, 8f are connected to the three passages defined in the other header pipe 2a.

  The outflow pipe 7 of the first-row heat exchanger 1A and the inflow pipes 8a, 8b, 8c of the second-row heat exchanger 1B configured as described above are connected via a distribution pipe 9a. The collecting pipe 9b is connected to the outflow pipes 8d, 8e, 8f of the heat exchanger 1B in the row.

  Accordingly, a space for routing the pipes 8a to 8e is required on both sides of the heat exchangers 1A and 1B, and in order to secure the space, the area of the heat exchange part must be reduced, and heat exchange is performed. Performance is sacrificed.

  Further, as a method of communicating a plurality of rows of heat exchangers, a method of connecting using a through hole and a sleeve arranged in a header pipe of the communicated heat exchanger is known (for example, see Patent Document 1).

JP 2005-509833 A (paragraph 0064, FIG. 6, FIG. 7)

  However, in the thing of patent document 1, there is a restriction | limiting in the header pipe space connected mutually, and if the site | part of the refrigerant path which wants to communicate exists in the position away, it is difficult to apply only with a through-hole and a sleeve.

  The present invention has been made in view of the above circumstances, and eliminates the routing of piping outside the heat exchanger so as to ensure space and maintain the degree of freedom of the heat medium flow form. I will provide a.

In order to solve the above-described problem, a first multiple-row heat exchange device according to the present invention includes a pair of header pipes having a plurality of spaces partitioned by a partition plate, and a pair of header pipes arranged between the header pipes and parallel to each other. In a multi-row heat exchange device in which a plurality of parallel flow heat exchangers having a plurality of heat exchange tubes are combined, the header pipe has a plurality of heats communicating with the heat exchange tubes of the heat exchangers in each row. And a medium passage, and a connection passage that is partitioned from the heat medium passage and is provided along the heat medium passage , and any one of the heat medium passages through a communication port provided at an appropriate position of the connection passage. Ri Na communicates the connection between space path, the header pipe, the header pipe body having a concave channel portion and the connecting passage constituting a part of the passages of the plurality of heat medium passages, the concave The opening portion of the passage portion is closed, the heat medium passage is configured in cooperation with the concave passage portion, and the cover member is connected to the heat exchange pipe. Item 1).
In this case, the header pipe body is formed of an aluminum extruded shape, the cover member is formed of a clad material in which a brazing material is laminated, and a communication port is formed at an arbitrary position of the concave passage portion of the header pipe body. after the provided while arranging the partition plate in the appropriate position of the heat medium passages, better to brazing the header pipe body and the cover member and said heat exchange tube is preferably (claim 3).

  By configuring in this way, the header pipes of the heat exchangers in each row to be combined can be made common, and communication is necessary by providing a communication port at an appropriate position of the connection passage provided in the header pipe. The heat medium passage of the heat exchanger part to be communicated can be communicated without using piping or the like.

Moreover, after providing a communication port in the appropriate location of the concave channel | path part of a header pipe main body, a header pipe main body and a cover member can be joined and a header pipe can be formed.

Moreover, the second multi-row heat exchange device according to the present invention includes a pair of header pipes having a plurality of spaces partitioned by a partition plate, and a plurality of parallel heat exchange tubes that are laid between the header pipes. In the multi-row heat exchange device in which a plurality of parallel flow heat exchangers are combined, the header pipe has a plurality of heat medium passages communicating with the heat exchange pipes of the heat exchangers in each row, A connection passage that is partitioned from the heat medium passage and is provided along the heat medium passage, and an arbitrary space in the heat medium passage and the connection passage through a communication port provided at an appropriate position of the connection passage. The header pipe is formed in a heat medium passage communicating with a heat exchange pipe of the heat exchanger in each row, and a side surface orthogonal to a face connected to the heat exchange pipe. Parts It comprises a plurality of pipes blocks having a concave connection channel portion, by joining the plurality of pipes blocks, formed by constituting the connecting passage by the recessed connecting passage portion of the bonded is the pipe block, and characterized in that (Claim 2).
In this case, the plurality of pipe blocks are formed of an aluminum extruded profile , and after providing a communication port at an arbitrary position of the concave connection passage portion of the pipe block, a partition plate is provided at an appropriate position of the heat medium passage. in disposed state, it is brazed to the pipe block and between the heat exchange tube is good (claim 4).

  By comprising in this way, after providing a communicating port in the appropriate location of the concave connection channel | path part of a pipe block, pipe blocks can be joined and a header pipe can be formed.

  According to the present invention, since the header pipes of the heat exchangers in each row to be combined are made common and the communication port is provided in the connection passage, the heat medium passage of the heat exchanger to be communicated can be communicated. It is possible to secure a space by eliminating the routing of the piping outside the exchanger, and it is possible to maintain the degree of freedom of the flow form of the heat medium.

It is sectional drawing (b) and the schematic side view (c) which follow the II line | wire of (a) and (a) which shows 1st Embodiment of the multiple row heat exchange apparatus which concerns on this invention. It is sectional drawing (a) which shows the header pipe in 1st Embodiment, and the exploded plan view (b) which shows the header pipe main body and cover member which comprise a header pipe. It is a disassembled perspective view which shows the said header pipe main body and a cover member. It is sectional drawing (b) and the schematic side view (c) which follow the II-II line | wire of (a) and (a) which shows 2nd Embodiment of the multiple row heat exchange apparatus which concerns on this invention. It is sectional drawing (a) which shows the header pipe in 2nd Embodiment, and the exploded top view (b) which shows the pipe block which comprises a header pipe. It is a perspective view which shows the said pipe block. It is the schematic front view (a) which shows an example of the flow of the refrigerant in this invention, a schematic plan view (b), and schematic left-right sectional views (c) and (d). It is a general | schematic expanded view which shows an example of piping of a multiple row heat exchanger.

  Hereinafter, an embodiment of a multi-row heat exchange device according to the present invention will be described in detail with reference to the accompanying drawings. Here, the same parts as those described with reference to FIG.

<First Embodiment>
As shown in FIG. 1, the multi-row heat exchanger HE (hereinafter referred to as a heat exchanger HE) includes a pair of header pipes 10 and 11 and a plurality of header pipes 10 and 11 that are installed in parallel with each other. A plurality of, for example, two solid flow parallel heats, mainly composed of heat exchange pipes 3 and heat exchange fins, for example, corrugated fins 4 that are interposed between the heat exchange pipes 3 and joined together. The exchangers 1A and 1B are arranged in a row so that the surfaces of the heat exchangers 1A and 1B overlap each other via a header pipe 10 or 11 that is common to one side. In this case, an inflow hole (not shown) is provided in the upper part of one header pipe 10 of the heat exchanger 1A in the first row, and the refrigerant inflow pipe 6 is connected through the inflow hole. In addition, an outlet hole (not shown) is provided in a portion below the center of the other header pipe 11, and the refrigerant outlet pipe 7 is connected through this outlet hole.

  The header pipes 10 and 11, the heat exchange pipe 3, and the corrugated fin 4 are formed of aluminum (including an aluminum alloy) member and are integrally joined by brazing.

  The header pipes 10 and 11 are formed in the same manner, and a plurality of heat medium passages 20 (two cases are shown in the figure) communicated with the heat exchange pipes 3 of the heat exchangers 1A and 1B in each row (hereinafter referred to as “two”). A refrigerant passage 20, a connection passage 30 that is partitioned from the refrigerant passage 20 and is provided along the refrigerant passage 20, and is connected to the refrigerant passage 20 via a communication port 40 provided at an appropriate position of the connection passage 30. The connection passage 30 is in communication.

  When the header pipes 10 and 11 are described as a representative of the header pipe 10, the header pipes 10 and 11 are divided into a concave passage portion 21 and a concave passage portion 21 that constitute a part of each passage of the two solid refrigerant passages 20. The header pipe main body 12 having the connection passage 30 provided along the passage 21 and the opening of the concave passage portion 21 are closed, the refrigerant passage 20 is configured in cooperation with the concave passage portion 21, and heat exchange is performed. The cover member 13 is connected to the tube 3.

  In this case, the header pipe body 12 is formed of an extruded shape made of an aluminum alloy, and has a substantially semi-elliptical concave passage portion 21 on both sides as shown in FIGS. A circular connection passage 30 is provided on the back of the wall 12a. The header pipe body 12 is formed in a streamline shape along the concave passage portion 21 having a semi-elliptical outer shape and the circular connection passage 30. In addition, a flat surface 12b is formed at the tip of the central partition wall 12a, the outer wall portion of the concave passage portion 21 extends outward from the central partition wall 12a, and the inner surface on the tip side of the cover member 13 A notch portion 12c for locking the end portion is formed.

  On the other hand, the cover member 13 is formed of a clad material in which an A4000 series brazing material (for example, A4343) is laminated on, for example, an A1000 series or A3000 series aluminum alloy core material (for example, A3003). As shown in FIG. 3, the header pipe body 12 is formed in a bent plate shape having a pair of wing portions 13 b that are gently curved on both sides of the flat base portion 13 a that abuts the flat surface 12 b of the central partition wall 12 a. In addition, the cover member 13 is provided with a horizontally long slit (not shown) for connecting the flat heat exchange tube 3 at an appropriate interval along the longitudinal direction.

  The heat exchange tube 3 is formed of a flat aluminum alloy extruded profile having a plurality of passages therein.

  The header pipe 10 is formed by brazing the header pipe body 12 and the cover member 13 formed as described above. In this case, the flat surface of the flat base portion 13a of the cover member 13 is brought into contact with the flat surface 12b of the central partition wall 12a of the header pipe body 12, and the wing portion 13b of the cover member 13 is brought into contact with the notch portion 12c of the header pipe body 12. Brazing and joining with the tip part locked.

  Before the header pipe body 12 and the cover member 13 are brazed, as shown in FIG. 2 (b), communication with an arbitrary portion of the concave passage portion 21 of the header pipe body 12 using a tool such as a drill. A hole 40 is drilled, and the header pipe body 12 and the cover member 13 are connected to each other in a state where the partition plate 5 is disposed at an appropriate position of the refrigerant passage 20 constituted by the header pipe body 12 and the cover member 13. Join. In practice, the header pipe body 12 and the cover member 13 are brazed and joined, and at the same time, the cover member 13 and the heat exchange pipe 3 are brazed and joined. Further, end caps 14 made of aluminum alloy are brazed and joined to the upper and lower ends of the header pipes 10 and 11.

  Next, an example of the refrigerant flow of the heat exchange device HE of the first embodiment will be described with reference to FIG. FIG. 7 is basically the same as the schematic front view described in FIG. 1 and the schematic cross-sectional view taken along the line I-I. In order to make the flow of the refrigerant easy to understand, left and right schematic cross-sectional views (c), ( d) is added.

  In FIG. 7, the refrigerant passage 20 of one header pipe 10 (left side in the figure) to which the heat exchange pipe 3 of the heat exchanger 1A in the first row is connected is divided into three equal parts by two partition plates 5a and 5b. The refrigerant passage 20 of the other header pipe 11 (right side in the figure) is divided into spaces s-1, s-2, and s-3, and is divided into two spaces s- by a partition plate 5c at about 1/3 of the upper side. 4 and s-5.

  On the other hand, the refrigerant passage 20 of one header pipe 10 (left side in the figure) to which the heat exchange pipe 3 of the heat exchanger 1B in the second row is connected is divided into two by the partition plate 5d at about 1/3 of the upper side. The refrigerant passage 20 of the other header pipe 11 (right side in the figure) is partitioned into spaces s-6 and s-7 (see FIG. 7 (c)), by a partition plate 5e at about 1/3 of the lower side. It is divided into two spaces s-8 and s-9 (see FIG. 7D). The spaces s-1 to s-8 defined by the refrigerant passage 20 and the connection passage 30 are communicated with each other through a communication port (not shown).

  In the heat exchanging device HE configured as described above, the refrigerant R flowing into the space s-1 of the refrigerant passage 20 from the inflow pipe 6 is indicated by the circled numbers (1) to (▲) in FIGS. 8 In the order indicated by ▼, space s-1 → heat exchange tube 3 → space s-4 → connection passage 30 → space s-9 → heat exchange tube 3 → space s-7 → heat exchange tube 3 → space s-8 → After flowing through the heat exchange pipe 3 → space s-6 → connection passage 30 → space s-2 & space s-3 → heat exchange pipe 3 → space s-5, it flows out from the outflow pipe 7. 7C and 7D, the mesh portion of the connection passage 30 is a region where the refrigerant R flows.

  The flow of the refrigerant R is an example, and by providing the communication port 40 at an arbitrary position, the flow of the refrigerant R, that is, the piping path of the heat exchanger, can have a degree of freedom.

  In the above description, the case where the heat exchangers 1A and 1B are arranged in two rows has been described. However, it is possible to arrange three or more columns. For example, as shown by a two-dot chain line in FIG. 2A, the number of the concave passage portions 21 formed in the header pipe 10 is increased, and a central partition wall 12a is provided between the concave passage portions 21 and the outer wall portion. A notch portion 12c is provided on the inner side of the header pipe 12 so that the flat surface 12b of the central partition wall 12a of the header pipe body 12 abuts the flat surface of the flat base portion 13a of the cover member 13 and the notch portion 12c of the header pipe body 12 is covered. In a state where the tip end portion of the wing portion 13b of the member 13 is locked, brazing and joining is performed in the same manner as described above.

  According to the heat exchange device of the first embodiment configured as described above, after providing the communication port 40 at an appropriate position of the two concave passage portions 21 provided in the header pipe body 12, the header pipe body 12. And the cover member 13 can be joined to form the header pipes 10 and 11.

  Therefore, since the header pipes 10 and 11 of the heat exchangers 1A and 1B in each row to be combined can be made common, the number of constituent members can be reduced, and piping can be routed outside the heat exchangers 1A and 1B. The space can be secured by eliminating the above, and the degree of freedom of the flow form of the heat medium can be maintained.

<Second Embodiment>
In the first embodiment, the header pipes 10 and 11 have a structure in which a header pipe body 12 formed of an aluminum alloy extruded profile and a cover member 13 made of a clad material in which brazing materials are laminated are brazed. However, the header pipes 10 and 11 may have different structures.

  For example, as shown in FIGS. 4 to 6, both header pipes 50 are orthogonal to the refrigerant passage 20 that communicates with the heat exchange pipes 3 of the heat exchangers 1 </ b> A and 1 </ b> B in each row and the surface that connects to the heat exchange pipe 3. A plurality of pipe blocks 51 (two cases are shown in the figure) having a concave connection passage portion 31 that forms a part of the connection passage 30 and is joined to both pipe blocks 51. The connection passage 30 is constituted by the concave connection passage portion 31 of the pipe block 51 to be joined.

  In this case, the pipe block 51 is formed of, for example, an extruded shape made of an A1000 series or A3000 series aluminum alloy. As shown in FIGS. 5 and 6, the pipe block 51 includes a block base 54 having a substantially trapezoidal cross section having a substantially trapezoidal refrigerant passage 20 in which a flat surface 52 connecting the heat exchange tubes 3 is a base 53. And the base 56 of the block base 54 and the flanges 56 extending at both ends of the flat top 55 that face the bottom 53, and the side of the block base 54 that is perpendicular to the flat 52 connecting the heat exchange pipe 3 The inclined side portion 57 and the flange portion 56 have a right triangular triangular concave connection passage portion 31 formed in cooperation. A flat joint surface 58 that is orthogonal to the flat surface 52 of the bottom portion 53 is formed on the side surface adjacent to the bottom portion 53.

  The header pipe 50 is formed by brazing and joining the two pipe blocks 51 formed as described above. In this case, for example, the flat joint surface 58 of the pipe block 51 and the flat end surface 56a of the flange portion 56 are brought into contact with each other via an A4000 series brazing material or a paste-like brazing material and brazed and joined.

Prior to brazing the pipe blocks 51, as shown in FIG. 5 (b), a communication port 40 is drilled at any location of the concave connection passage portion 31 of the pipe block 51 using a tool such as a drill. In addition, the pipe blocks 51 are brazed and joined to each other in a state where a partition plate (not shown) is disposed at an appropriate position of the refrigerant passage 20 of the pipe block 51. Actually, the pipe blocks 51 and the heat exchange pipe 3 are brazed and joined together at the same time.

  In the second embodiment, the other parts are the same as those in the first embodiment, so the same parts are denoted by the same reference numerals and description thereof is omitted.

  In the above description, the case where the heat exchangers 1A and 1B are arranged in two rows has been described. However, it is possible to arrange three or more columns. In this case, the number of pipe blocks 51 may be increased and the pipe blocks 51 may be joined in the same manner as described above.

  According to the heat exchange device of the second embodiment configured as described above, after providing the communication port 40 at an appropriate location of the concave connection passage portion 31 of the pipe block 51, the pipe blocks 51 are joined to each other to form a header pipe. 50 can be formed.

  Therefore, since the header pipes 50 of the heat exchangers 1A and 1B in each row to be combined can be made common, it is possible to reduce the number of components and eliminate the need for piping outside the heat exchangers 1A and 1B. Thus, a space can be secured and the degree of freedom of the flow form of the heat medium can be maintained.

1A, 1B Heat exchanger 3 Heat exchange pipe 4 Corrugated fins 10, 11 Header pipe 12 Header pipe body 13 Cover member 20 Refrigerant passage (heat medium passage)
21 concave passage portion 30 connection passage 31 concave connection passage portion 40 communication port 50 header pipe 51 pipe block

Claims (4)

A plurality of rows obtained by combining a plurality of parallel flow type heat exchangers each including a pair of header pipes having a plurality of spaces partitioned by a partition plate and a plurality of parallel heat exchange tubes installed between the header pipes. In the heat exchange device,
The header pipe has a plurality of heat medium passages communicating with the heat exchange pipes of the heat exchangers in each row, and has a connection passage that is partitioned from the heat medium passage and is provided along the heat medium passage. , Ri Na communicates the connecting passage with any of the space of the heating medium passage through the communication port provided at an appropriate position of the connecting passage,
The header pipe closes the header pipe main body having a concave passage portion and a connection passage constituting a part of each of the plurality of heat medium passages, and the opening of the concave passage portion, and the concave passage portion. A multi-row heat exchange device comprising a heat medium passage in cooperation with the cover member and a cover member connected to the heat exchange pipe . A plurality of rows obtained by combining a plurality of parallel flow type heat exchangers each including a pair of header pipes having a plurality of spaces partitioned by a partition plate and a plurality of parallel heat exchange tubes installed between the header pipes. In the heat exchange device,
The header pipe has a plurality of heat medium passages communicating with the heat exchange pipes of the heat exchangers in each row, and has a connection passage that is partitioned from the heat medium passage and is provided along the heat medium passage. And connecting any space in the heat medium passage and the connection passage through a communication port provided at an appropriate position of the connection passage,
The header pipe is formed in a heat medium passage communicating with the heat exchange pipe of the heat exchanger in each row, and a concave shape that forms a part of the connection passage, and is formed on a side surface orthogonal to a face connected to the heat exchange pipe A plurality of pipe blocks having a connection passage portion, the plurality of pipe blocks are joined, and the connection passage is configured by the concave connection passage portion of the pipe block to be joined. Multi-row heat exchange device. The multi-row heat exchange device according to claim 1 ,
The header pipe body is formed of an aluminum extruded profile, the cover member is formed of a clad material in which a brazing material is laminated, and a communication port is provided at an arbitrary position of the concave passage portion of the header pipe body. Thereafter, the multi-row heat exchange device is formed by brazing and joining the header pipe body, the cover member, and the heat exchange pipe with a partition plate disposed at an appropriate position of the heat medium passage . The multi-row heat exchange device according to claim 2 ,
The plurality of pipe blocks are formed of an aluminum extruded profile , and after providing a communication port at an arbitrary position of the concave connection passage portion of the pipe block, a partition plate is disposed at an appropriate position of the heat medium passage. A multi-row heat exchange device , wherein the pipe blocks and the heat exchange tubes are brazed and joined in a state.

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