JP2015092120A - Condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To circulate a refrigerant equally in a plurality of tubes by using a simple configuration without increasing flow passage resistance generated when the refrigerant flows so as to enable uniform heat exchange in a condenser.SOLUTION: In a condenser 10, an inlet connection portion 22 to which a refrigerant is supplied is connected to a side wall of a first header 12. The inlet connection portion 22 is arranged in the vicinity of an upper end of the first header 12 and is connected to the side wall of the first header 12 via an inclination portion 32 inclined downwards at a predetermined angle. When the refrigerant is supplied from the inlet connection portion 22 to inside of the first header 12, the refrigerant is supplied toward an approximately center in the height direction of the first header 12 by the inclination portion 32. Thus, the refrigerant can flow approximately equally in a plurality of tubes 16 that are arranged in parallel in the height direction of the first header 12 to exchange heat.

Description

  The present invention relates to a condenser capable of performing heat exchange with a refrigerant by circulating the refrigerant therein and allowing air to pass therethrough.

  2. Description of the Related Art Conventionally, in a vehicle air conditioner mounted on a vehicle such as an automobile, a condenser that performs heat exchange of a refrigerant flowing inside is used, and the condenser is a set of headers into which the refrigerant is introduced. And a plurality of tubes connected between the headers. Then, after the refrigerant supplied to one header circulates to a plurality of tubes connected to each other at regular intervals, the refrigerant circulates again to the one header via the other header. In this way, the refrigerant that circulates through the header and the tube and the air that passes through the fins provided between the tubes are subjected to heat exchange, whereby the gaseous refrigerant is cooled and liquefied.

  In such a condenser, it is generally possible to perform the heat exchange between the refrigerant and air most efficiently by distributing the refrigerant equally to each of the plurality of tubes, thereby obtaining an ideal output performance. It is known that However, in actuality, the refrigerant is likely to flow in a tube near the inlet pipe connected to the header and supplied with the refrigerant, and conversely, the refrigerant is less likely to flow in a tube away from the inlet pipe. The flow rate of the refrigerant in the tube becomes non-uniform, and the heat exchange performance is biased.

  In order to solve such a problem, for example, in the condenser disclosed in Patent Document 1, a rectifying plate is provided in the header so as to be orthogonal to the extending direction of the inlet pipe and the tube. A plurality of communication holes communicating with the tube side are provided. The communication hole has a circular shape in the vicinity of the inlet pipe in the rectifying plate, and is formed in a long hole shape having a large opening area at a portion spaced from the inlet pipe. Then, when the refrigerant is supplied from the inlet pipe into the header, the refrigerant is prevented from flowing directly to the tube near the inlet pipe, and is circulated to the tube side through the communication hole, and the opening area of the communication hole Since a large amount of refrigerant can easily flow through the tubes spaced apart from the inlet pipe, the refrigerant circulates substantially evenly over the plurality of tubes.

  Further, in the condenser disclosed in Patent Document 2, a bifurcated branch portion is provided in the inlet pipe connected to the header, and the branch portion is connected to the header so that the header has Without providing a rectifying plate, the supply position of the refrigerant is dispersed in the vertical direction of the header, and the circulation amount of the refrigerant supplied to the plurality of tubes is adjusted to be substantially equal.

JP 2004-353936 A JP-A-6-74609

  In the condenser disclosed in Patent Document 1 described above, the flow of refrigerant can be made to flow substantially evenly through a plurality of tubes by providing a flow straightening plate in the header. There is a problem that the distribution resistance at the time of distribution increases and the distribution resistance also increases when the refrigerant flows through the communication hole.

  Moreover, in the condenser of patent document 2, although the distribution | circulation resistance of a refrigerant | coolant like the condenser of patent document 1 mentioned above does not increase, the structure of the inlet pipe which has a branch part becomes complicated, and manufacturing cost is low. There is concern that it will increase.

  The present invention has been made in consideration of the above-described problems, and uniformly circulates the refrigerant through a plurality of tubes with a simple configuration without increasing the flow resistance when the refrigerant flows. It is an object to provide a condenser that can be exchanged.

In order to achieve the above object, the present invention provides a pair of headers that are spaced apart from each other and have a space portion into which a refrigerant is introduced, and both end portions along the longitudinal direction are connected to the header. In a condenser that has a plurality of tubes and a plurality of fins provided between adjacent tubes, a condensation core is configured from the tubes and fins, and performs heat exchange of the refrigerant in the condensation core,
One side of the header is connected to an inlet connection part to which the first pipe to which the refrigerant is supplied is connected and an outlet connection part to which the second pipe to which the refrigerant is discharged is connected. A flow path that circulates is provided inside, and the flow path is inclined at a predetermined angle so as to be directed to the center side along the extending direction of the space portion arranged at the uppermost position in the gravity direction in the header. .

  According to the present invention, in a condenser having a pair of headers arranged at intervals, one of the headers is connected to an inlet connection to which a first pipe supplied with refrigerant is connected, The inlet connection portion has a flow path through which the refrigerant flows, and is connected to the header inclined at a predetermined angle so that the flow path is directed to the center side of the space portion arranged in the uppermost gravitational direction in the header.

  Therefore, for example, even when the inlet connection portion is disposed in the vicinity of the end portion along the extending direction of the space portion in the header due to the layout restriction of the first piping connected to the inlet connection portion, the inlet from the first piping is provided. The flow of the refrigerant introduced into the connecting portion can be deflected in the extending direction of the header through the flow path inclined toward the center side along the extending direction of the space portion.

  As a result, the refrigerant can be supplied from the inlet connection portion toward the center side along the extending direction of the space portion in the header, and the refrigerant is distributed substantially evenly to the plurality of tubes connected to the header. Therefore, heat exchange of the refrigerant flowing through the plurality of tubes can be performed uniformly. In addition, in the inlet connection portion, the flow resistance is increased when the refrigerant flows through the flow path with a simple configuration in which the flow path is inclined and connected toward the center side along the extending direction of the space portion. Without any problem, the refrigerant can be suitably dispersed through the header and divided into each tube.

  Further, the flow path has a first opening connected to the first pipe and a second opening connected to the header, and the second opening is an imaginary perpendicular to the axis of the first opening. By arranging so as not to overlap on the projection surface, the refrigerant can be more effectively distributed and distributed to each tube through the header.

  Furthermore, the flow path is provided with changing means for changing the flow direction of the refrigerant between the first opening and the second opening, thereby changing the flow direction of the refrigerant flowing through the flow path. Reduction can be achieved.

  Furthermore, the change means is an inclined portion formed to be inclined toward the height center side of the condensation core, so that it is possible to easily change the flow direction of the refrigerant simply by passing the inclined portion. Become.

  Furthermore, the condensation core has a first core part in which the refrigerant flows from one header provided with the inlet connection part to the other header, and a second in which the refrigerant circulates through the other header to the one header. And a space portion disposed at the uppermost position in the gravity direction is provided in the first core portion, and the inlet connection portion is provided above or below the gravity center with respect to the height center of the space portion. Thus, when supplying the refrigerant from the inlet connection portion to the header, it is effective because the refrigerant can be suitably introduced into the substantially central portion along the height direction of the header.

  In addition, by joining the inlet connection portion and the header by brazing, for example, when joining a plurality of tubes to the header by brazing, the joining operation of the inlet connection portion can be performed at the same time. Compared with the case where the joining operation of the connecting portion is performed separately from the header, it is possible to reduce the manufacturing process of the condenser.

  According to the present invention, the following effects can be obtained.

  That is, in a condenser having a pair of headers arranged at intervals, one of the headers is connected to an inlet connection to which a first pipe to which a refrigerant is supplied is connected. By having a flow path through which the refrigerant flows inside and connecting the flow path to the header by inclining the flow path toward the center side of the space portion arranged in the uppermost gravitational direction in the header, for example, an inlet connection portion Even if it is arranged in the vicinity of the end along the extending direction of the space, the refrigerant flow can be deflected along the extending direction of the header and introduced into the header. As a result, the refrigerant can be supplied from the inlet connection portion toward the center side along the extending direction of the space portion in the header. As a result, the refrigerant can be circulated substantially uniformly through the plurality of tubes connected to the header, and heat exchange of the refrigerant that circulates through the plurality of tubes can be performed uniformly. In addition, in the inlet connection portion, the flow resistance is reduced when the refrigerant flows through the flow path with a simple configuration in which the flow path is inclined and connected toward the center side along the extending direction of the space portion in the header. Without increasing, it is possible to suitably disperse the refrigerant through the header and divert it to each tube.

1 is an overall cross-sectional view of a condenser according to a first embodiment of the present invention. It is an expanded sectional view which shows the entrance connection part vicinity of the 1st header in the condenser of FIG. FIG. 3A is an enlarged cross-sectional view of the condenser to which the inlet connection portion according to the first modification is applied, and FIG. 3B is an enlarged cross-sectional view of the condenser to which the inlet connection portion according to the second modification is applied. is there. It is a whole sectional view of a condenser concerning a 2nd embodiment of the present invention. FIG. 5 is an enlarged cross-sectional view showing the vicinity of an inlet connection portion of a first header in the condenser of FIG. 4. It is a whole sectional view of the condenser concerning a 3rd embodiment of the present invention.

  Preferred embodiments of the condenser according to the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, reference numeral 10 indicates a condenser according to the first embodiment of the present invention.

  As shown in FIG. 1, the condenser 10 includes a pair of first and second headers 12 and 14 and a plurality of tubes 16 provided between the first header 12 and the second header 14. It includes a plurality of fins 18 provided between the tubes 16 and bent in a wave shape, and a third header 20 connected to the second header 14. The condenser 10 is arranged so that the tube 16 is substantially horizontal and the first and second headers 12 and 14 and the third header 20 extend in the vertical direction (arrow A1 and A2 directions) at both ends of the tube 16. In addition, the fin 18 is formed by, for example, bending a thin plate of aluminum or the like into a wave shape, and is provided between the two tubes 16 adjacent to each other in the height direction (arrows A1 and A2 directions).

  The first and second headers 12 and 14 are, for example, hollow cylindrical and have a predetermined length along the height direction of the condenser 10 (arrows A1 and A2 directions), and the width direction of the condenser 10 The first header 12 provided on one end side along arrow B1 (in the direction of arrow B1) is led to the inlet connection portion 22 into which refrigerant is introduced from the outside, and the refrigerant circulated inside the condenser 10. The outlet connection part 24 is connected.

  The inlet connection portion 22 is provided on the side wall near the upper end portion of the first header 12, and the outlet connection portion 24 is provided on the side wall near the lower end portion of the first header 12 so as to be substantially parallel to each other. . On the other hand, internal spaces 26a and 26b into which the supplied refrigerant is introduced are formed in the first and second headers 12 and 14, respectively.

  As shown in FIGS. 1 and 2, the inlet connection portion 22 is formed of, for example, a metal material, and a main body portion to which a supply pipe (first pipe, first opening) 28 to which a refrigerant is supplied is connected. 30 and an inclined portion 32 inclined by a predetermined angle with respect to the main body portion 30.

  The main body 30 is substantially orthogonal to the extending direction of the first header 12 (the directions of arrows A1 and A2), and the end of the inclined portion 32 is connected to the side wall of the first header 12. Further, the inlet connection portion 22 is joined to the side wall by brazing in a state where the inclined portion 32 is inclined downward in the gravity direction (arrow A1 direction) along the side wall of the first header 12.

  On the other hand, a first supply passage (flow path) 34 penetrating along the axial direction (arrow B1, B2 direction) is formed inside the main body 30, and a supply pipe 28 to which a refrigerant (not shown) is supplied is provided inside. Inserted and connected.

  A second supply passage (flow passage) 36 that penetrates along the axial direction and is inclined at a predetermined angle with respect to the first supply passage 34 is formed inside the inclined portion 32, and one end thereof is the first supply passage 34. The other end is connected to the first header 12 and communicates via a communication hole (second opening) 38 opened in the side wall of the first header 12. That is, in the inlet connection portion 22, when the refrigerant flows from the first supply passage 34 to the second supply passage 36, the flow direction is changed by the second supply passage 36 that is inclined. In other words, the second supply passage 36 functions as a changing unit that changes the flow direction of the refrigerant flowing from the first supply passage 34.

  The inclination angle of the inclined portion 32 is set to an acute angle that is 90 ° or less with respect to the main body portion 30, for example.

  The communication hole 38 is downward (arrow A1) with respect to the first supply passage 34 in the direction orthogonal to the axis of the first supply passage 34, that is, in the extending direction of the first header 12 (arrow A1, A2 direction). In the direction) by a predetermined distance. In other words, the first supply passage 34 and the communication hole 38 (the end of the second supply passage 36) do not overlap each other on the virtual projection plane orthogonal to the axis of the first supply passage 34. Are spaced apart from each other.

  The outlet connection portion 24 is formed, for example, in a cylindrical shape from a metal material, and is connected so as to be orthogonal to the extending direction of the first header 12 (the directions of the arrows A1 and A2), and the discharge passage along the inside thereof. 40 penetrates. A discharge pipe (second pipe) 42 for discharging the refrigerant to the outside is connected to one end portion of the outlet connection portion 24, and the other end portion is connected to the first through a communication hole 44 opened in the side wall of the first header 12. It communicates with the internal space 26a of the header 12. Thereby, the internal space 26 a of the first header 12 communicates with the discharge pipe 42 through the discharge passage 40 of the outlet connection portion 24. The outlet connection portion 24 is joined to the side wall of the first header 12 by brazing similarly to the inlet connection portion 22.

  In addition, a partition wall 46 is provided in the internal space 26 a of the first header 12 at a position that is above (in the direction of the arrow A <b> 2) with respect to the connection portion of the outlet connection portion 24. The first space portion 48 communicated with the inlet connection portion 22 and the second space portion 50 communicated with the outlet connection portion 24 are separated. That is, the refrigerant supplied from the inlet connection portion 22 to the first space portion 48 of the first header 12 and the refrigerant discharged from the second space portion 50 of the first header 12 to the outside through the outlet connection portion 24. Are separated by a partition wall 46.

  The first header 12 is connected to one end portion of the plurality of tubes 16 on the side wall opposite to the side wall to which the inlet connecting portion 22 and the outlet connecting portion 24 are connected, and the first and second space portions 48 are respectively connected thereto. , 50.

  The second header 14 is provided substantially parallel to the first header 12, and the length along the height direction (arrow A <b> 1, A <b> 2 direction) is shorter than the first header 12. The second header 14 has an upper end that is substantially the same height as the upper end of the first header 12 and a lower end that is above the lower end of the first header 12 (in the direction of arrow A2). It is done.

  Moreover, the other end part of the some tube 16 is connected to the 2nd header 14 at the side wall used as the 1st header 12 side (arrow B1 direction).

  The third header 20 is, for example, a hollow cylinder and is provided substantially parallel to the side of the second header 14 and is offset from the second header 14 by a predetermined distance downward (in the direction of arrow A1). Has been.

  The lower end side wall of the second header 14 and the side wall of the third header 20 facing each other are connected to each other by a connecting pipe 52. The connection pipe 52 is formed in a tubular shape having a communication path therein, and one end thereof is inserted into the second header 14 and the other end is inserted into the third header 20. 26b and 26c are communicated with each other. Thereby, the refrigerant introduced into the second header 14 is introduced into the third header 20 through the connection pipe 52.

  Further, the third header 20 has a side wall protruding downward (in the direction of arrow A1) with respect to the second header 14 and, among the plurality of tubes 16, other than some of the tubes 16 that are not connected to the second header 14. The ends are connected, and the tube 16 and the internal space 26c communicate with each other. That is, among the plurality of tubes 16, some of the tubes 16 connected to the third header 20 have a longer longitudinal dimension than the tubes 16 connected to the second header 14.

  The tube 16 is formed of, for example, a flat tube made of an aluminum material, and is formed in a straight line having a predetermined length. As shown in FIG. 1, the tubes 16 extend in a substantially horizontal direction (arrows B1 and B2 directions) and are spaced apart from each other by a predetermined distance in the height direction (arrows A1 and A2 directions). Provided, one end thereof is connected to the first header 12, and the other end thereof is connected to the second header 14 or the third header 20, respectively.

  And after the refrigerant | coolant supplied to the 1st header 12 from the inlet connection part 22 distribute | circulates to the 2nd header 14 through the several tube 16, it is the internal space of the 3rd header 20 through the connection pipe 52 from the internal space 26b. 26c, again through the tube 16 to the second space 50 of the first header 12, and discharged through the outlet connection 24.

  In the condenser 10, among the plurality of tubes 16, the first header 12 and the second header 14 are connected to each other via the plurality of tubes 16, and the refrigerant is transferred from the first header 12 to the second header 14. The part to be circulated functions as a condensing part (first core part) S1, while the third header 20 and the first header 12 are connected to each other via a plurality of tubes 16, and the refrigerant is removed from the third header 20. The part circulated to the first header 12 functions as a supercooling part (second core part) S2.

  In addition, the inlet connection portion 22 is provided at a position above the imaginary line M (= 1 / 2L) that is half the height dimension L of the condensing portion S1 in the first header 12 (in the direction of the arrow A2).

  Here, the case where the above-described condenser 10 has a one-pass structure in which the refrigerant flows in one direction (the direction of arrow B2) from the first header 12 toward the second header 14 in the condensing unit S1 will be described. ing.

  The condenser 10 according to the first embodiment of the present invention is basically configured as described above. Next, the operation and effects thereof will be described.

  First, a gaseous refrigerant compressed to a high temperature and high pressure by a compressor (not shown) is supplied to the inlet connection portion 22 through the supply pipe 28, and the first and second supply passages 34, 36 of the inlet connection portion 22 It is introduced into the first space 48 of one header 12. At this time, the inlet connecting portion 22 has an inclined portion 32 connected to the first header 12 inclined with respect to the main body portion 30 downward in the gravitational direction (in the direction of the arrow A1) by a predetermined angle. Therefore, the refrigerant is introduced toward the substantially central portion along the height direction (arrow A1, A2 direction) of the first space portion 48 in the first header 12. It becomes.

  Accordingly, the refrigerant is not introduced only in the vicinity of the upper end portion to which the inlet connection portion 22 is connected in the height direction of the first header 12 (in the directions of arrows A1 and A2), and the height direction of the first header 12 is set. It will be introduced substantially evenly into the substantially central portion and the lower vicinity along the (arrow A1, A2 direction). In other words, it is avoided that the refrigerant is concentratedly supplied in the vicinity of the upper end portion of the first header 12 to which the inlet connection portion 22 is connected, and is directed to the substantially central portion or the lower end portion side of the first space portion 48. Are also supplied so as to be substantially uniform.

  And when the refrigerant | coolant supplied to the 1st header 12 distribute | circulates so that it may become respectively substantially equal with respect to the some tube 16, and distribute | circulates through the said tube 16 to the 2nd header 14 side (arrow B2 direction), The refrigerant flowing between the fins 18 is cooled and liquefied and introduced into the internal space 26 b of the second header 14. At this time, the refrigerant is circulated substantially uniformly with respect to each tube 16, whereby the refrigerant can be cooled evenly and efficiently.

  The refrigerant moves from the second header 14 to the internal space 26c of the third header 20 through the connection pipe 52 and is separated into gas and liquid, and then only the liquid refrigerant is connected to the third header 20. Cooling is further achieved by flowing through the plurality of tubes 16 toward the first header 12 (in the direction of arrow B1).

  In the condenser 10, among the plurality of tubes 16, the first header 12 and the second header 14 are connected to each other via a part of the tubes 16, and the refrigerant is transferred from the first header 12 to the second header 14. The portion through which the refrigerant flows is functioning as the condensing unit S1, the third header 20 and the first header 12 are connected to each other through the remaining tube 16, and the refrigerant is transferred from the third header 20 to the first header 12. The part to circulate functions as the supercooling part S2.

  Finally, the liquid refrigerant introduced into the second space portion 50 of the first header 12 through the tube 16 is led out to the discharge pipe 42 through the discharge passage 40 of the outlet connection portion 24.

  As described above, in the first embodiment, in the condenser 10 having the inlet connection portion 22 to which the refrigerant is supplied to the side wall of the first header 12 and the outlet connection portion 24 to which the refrigerant is led out, For example, even when the inlet connection portion 22 is provided in the vicinity of the upper end portion of the first header 12 due to the layout of the supply pipe 28 to be connected, the inclined portion is inclined downward in the gravity direction (arrow A1 direction). By connecting 32 to the side wall, the refrigerant introduction direction with respect to the first header 12 can be deflected downward in the gravitational direction (arrow A1 direction).

  Therefore, it becomes possible to supply the refrigerant from the inlet connection portion 22 connected in the vicinity of the upper end portion of the first header 12 toward the substantially central portion in the height direction of the first header 12, and accordingly, the height is increased. It is possible to distribute the refrigerant substantially uniformly with respect to the plurality of tubes 16 arranged in parallel in the direction. As a result, the air passing between the plurality of tubes 16 and the refrigerant can be heat-exchanged substantially evenly, the refrigerant can be efficiently cooled, and the heat exchange performance of the condenser 10 can be improved. it can.

  In addition, the refrigerant flows through the first and second supply passages 34 and 36 with a simple configuration in which an inclined portion 32 inclined downward is provided in the inlet connection portion 22 for supplying the refrigerant to the first header 12. In the first space 48 of the first header 12, the amount of refrigerant flowing in the first space 12 is made to be substantially equal by distributing the refrigerant to the tubes 16 without being increased. Is possible.

  Further, the inlet connection portion 22 is provided in the vicinity of the upper end portion of the first header 12, at a position in the first header 12 above (in the direction of arrow A <b> 2) from the center (imaginary line M) of the height dimension L of the condensing portion S <b> 1. In this case, the refrigerant can be preferably introduced through the inlet connection portion 22 toward the substantially central portion along the height direction of the first header 12 (the directions of the arrows A1 and A2). It is possible to distribute to

  Furthermore, the refrigerant is moved in the height direction of the first header 12 (arrows A1 and A2 directions) only by connecting the inlet connection portion 22 having the inclined portion 32 inclined with respect to the main body portion 30 to the first header 12. Compared with the configuration in which the connection part of the inlet pipe connected to the header is bifurcated, for example, as in the case of a condenser according to the prior art, Simplification can be achieved, and the flow resistance of the refrigerant flowing through the inside can be further reduced.

  Furthermore, the plurality of tubes 16 are brazed to the first and second headers 12 and 14 by joining the inlet connection portion 22 and the outlet connection portion 24 to the side wall of the first header 12 by brazing. It becomes possible to join at the same time when joining. As a result, the manufacturing process of the condenser 10 can be reduced as compared with the case where the inlet connection portion 22 and the outlet connection portion 24 are joined to the first header 12 separately from the tube 16.

  Further, in the inlet connecting portion 22 described above, the first supply passage 34 to which the supply pipe 28 is connected extends in a substantially horizontal direction (directions of arrows B1 and B2), and the second supply passage 36 is the first supply passage 34. However, it is not limited to the case where it is formed so as to incline downward (in the direction of arrow A1). For example, an inlet connection 62 according to a first modification of the condenser 60 shown in FIG. 3A. In addition, the first supply passage 64 and the second supply passage 66 are provided in a straight line, and the second supply passage 66 is substantially centered along the extending direction of the first header 12 with respect to the first header 12. You may make it connect inclining toward.

  In the inlet connection portion 62 according to the first modification, for example, when the end portion of the supply pipe 28 connected to the first supply passage 64 is connected obliquely from the upper side to the lower side of the inlet connection portion 62, It is preferable that the first supply passage 64 can be connected in a substantially straight line.

  Moreover, like the inlet connection part 72 which concerns on the 2nd modification of the condenser 70 shown by FIG. 3B, the 1st supply path 74 is upward (arrow A2 direction) toward the 2nd supply path 76 side (arrow B2 direction). And the second supply passage 76 is inclined downward (arrow A1 direction) toward the first header 12 (arrow B2 direction) and connected to the first header 12, and the second header The first supply passage 74 and the second supply passage 76 may be connected to each other by a communication passage 78 extending in a substantially horizontal direction. Note that the first supply passage 74 and the second supply passage 76 may be directly connected to each other without being connected to each other via the communication passage 78.

  In the inlet connection portion 72 according to the second modification, for example, when the end portion of the supply pipe 28 connected to the first supply passage 74 is obliquely connected upward from the lower side of the inlet connection portion 72, The first supply passage 74 is preferably connected in a substantially straight line.

  In other words, the inlet connecting portions 22, 62, 72 are inclined by a predetermined angle so that the second supply passages 36, 66, 76 are directed to a substantially central portion along the extending direction (arrow A1 direction) of the first header 12. If connected to the first header 12, the first supply passages 34, 64, 74 are connected to the second supply passages 36, 66, 76 in a straight line or inclined at a predetermined angle. The connection is not particularly limited.

  In other words, the end of the supply pipe 28 is connected to the first supply passages 34, 64, 74 of the inlet connection parts 22, 62, 72 according to the handling (layout) of the supply pipe 28 connected thereto. The supply pipe 28 can be easily and reliably connected to the first supply passages 34, 64, 74 by forming the passages 34, 64, 74 at an angle that can be connected in a straight line.

  Next, the condenser 100 which concerns on 2nd Embodiment is shown in FIG.4 and FIG.5. The same components as those of the condenser 10 according to the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the condenser 100 according to the second embodiment, as shown in FIG. 4, the inlet connection portion 104 connected to the first header 102 has a center (imaginary line) along the height direction of the condensation portion S1. M is different from the condenser 10 according to the first embodiment in that it is connected downward (in the direction of arrow A1) with respect to M).

  As shown in FIGS. 4 and 5, the inlet connection portion 104 of the condenser 100 is formed of, for example, a metal material, and a main body portion 30 to which a supply pipe 28 to which a refrigerant is supplied is connected, and the main body. The main body 30 is substantially orthogonal to the extending direction of the first header 102, and the inclined portion 106 is directed upward in the gravity direction (arrow A2 direction). Inclined at a predetermined angle and connected to the side wall of the first header 102. The inlet connecting portion 104 is provided at a position below (in the direction of the arrow A1) the imaginary line M (= 1 / 2L) that is half the height dimension L of the condensing portion S1 in the first header 102.

  A second supply passage 108 that is inclined with respect to the first supply passage 34 of the main body 30 is formed inside the inclined portion 106, and the second supply passage 108 penetrates along the axial direction and has one end thereof. The other end is connected to and communicates with the first supply passage 34, and the other end is connected to the first header 102 and communicates via a communication hole (second opening) 110 that opens to the side wall of the first header 102. .

  The communication hole 110 is located above the first supply passage 34 (arrow A2) in a direction orthogonal to the axis of the first supply passage 34, that is, in the extending direction of the first header 102 (arrow A1, A2 direction). In the direction) by a predetermined distance. In other words, the first supply passage 34 and the communication hole 110 (the end portion of the second supply passage 108) do not overlap each other on the virtual projection plane orthogonal to the axis of the first supply passage 34. Are spaced apart from each other.

  In the condenser 100 described above, when the high-temperature and high-pressure gaseous refrigerant is supplied to the first supply passage 34 of the inlet connection portion 104 through the supply pipe 28, the inclined portion 106 moves upward in the direction of gravity (arrow). A2 (in the direction A2) is inclined by a predetermined angle and communicates with the internal space 26a through the second supply passage 108, so that the refrigerant is in the height direction (arrows A1, A2) of the first space portion 48 in the first header 102. It is introduced toward the substantially central portion along the direction).

  Accordingly, the refrigerant is not introduced only in the vicinity of the lower end portion to which the inlet connection portion 104 is connected in the height direction of the first header 102 (directions of arrows A1 and A2), and the height direction of the first header 102 is set. It is also introduced into the substantially central part along the upper side and the vicinity in the upper part. That is, it is avoided that the refrigerant for the first header 102 is concentratedly supplied in the vicinity of the lower end portion to which the inlet connection portion 22 is connected, and is supplied so as to be substantially equal to the central portion and the upper end portion side. Is done.

  And the refrigerant | coolant supplied to the 1st header 102 distribute | circulates so that it may become respectively substantially equal with respect to each tube 16, and distribute | circulates between the fins 18 when distribute | circulating to the 2nd header 14 side through this tube 16. The refrigerant is cooled and liquefied by the air to be introduced into the internal space 26 b of the second header 14. At this time, the refrigerant is circulated substantially uniformly with respect to each tube 16, whereby the refrigerant can be cooled evenly and efficiently.

  As described above, in the second embodiment, in the condenser 100, for example, the inlet connection portion 104 connected to the first header 102 is connected to the first header 102 in relation to the layout of the supply pipe 28 to be connected. Even in the case of being provided in the vicinity of the lower end portion of the head, the inclined portion 106 inclined toward the upper direction of the gravitational direction (the direction of the arrow A2) is connected to the side wall, so that the direction of introducing the refrigerant to the first header 102 It becomes possible to deflect toward (arrow A2 direction).

  Therefore, even when the inlet connection portion 104 is provided in the vicinity of the lower end portion of the first header 102, it becomes possible to supply the refrigerant toward the substantially central portion in the height direction of the first header 102. The refrigerant can be circulated substantially uniformly with respect to the plurality of tubes 16 arranged in parallel in the height direction. As a result, the air passing between the plurality of tubes 16 and the refrigerant can be heat-exchanged substantially evenly, the refrigerant can be efficiently cooled, and the heat exchange performance of the condenser 100 can be improved. it can.

  Further, the inlet connecting portion 104 that supplies the refrigerant to the first header 102 is provided with an inclined portion 106 that is inclined downward, and the refrigerant is preferably used in the first space portion 48 of the first header 102. It is possible to make the circulation amount of the circulating refrigerant substantially equal by dispersing the refrigerant into each tube 16.

  Further, when the inlet connecting portion 104 is provided in the vicinity of the lower end portion of the first header 102, at a position below the center of the height of the condensing portion S1 in the first header 102 (in the direction of the arrow A1), Since the refrigerant can be preferably introduced toward the substantially central portion along the height direction (arrow A1, A2 direction) of the first header 102 through the connection portion 104, the refrigerant is allowed to flow through each tube 16 substantially evenly. Can be effective.

  Furthermore, when joining the plurality of tubes 16 to the first and second headers 102 and 14 by brazing, the inlet connection portion 104 is joined to the side wall of the first header 102 by brazing. It becomes possible to join at the same time. As a result, the manufacturing process of the condenser 100 can be reduced as compared with the case where the inlet connection portion 104 is joined to the first header 102 separately from the case where the tube 16 is joined.

  Furthermore, in the condensers 10 and 100 according to the first and second embodiments described above, the inlet connection portions 22 and 104 are in the direction in which the first headers 12 and 102 extend (arrows A1 and A2 directions). Although the case where they are connected so as to be substantially orthogonal to each other has been described, the present invention is not limited to this, and the second supply passages 36 and 108 in the inlet connection portions 22 and 104 extend the first headers 12 and 102. If it is connected so as to incline toward the center in the existing direction, for example, the first supply passage 34 of the inlet connecting portions 22 and 104 extends in the direction in which the first headers 12 and 102 extend (in the directions of arrows A1 and A2). ) In the left-right direction (thickness direction).

  Next, the condenser 150 which concerns on 3rd Embodiment is shown in FIG. The same components as those of the condenser 10 according to the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the condenser 150 according to the third embodiment, in the condensing unit S1, the first header 152 is divided into three parts by two first and second partition walls 154 and 156, and the second header 158 is the third partition wall. 160 is divided into two parts by a three-pass structure in which the refrigerant circulates between the first header 152 and the second header 158 through the plurality of tubes 16 once and a half. It is different from the condenser 10 which concerns.

  As shown in FIG. 6, the condenser 150 includes a first partition in which a first header 152 is provided in the vicinity of a substantially central portion along the height direction of the first header 152 (the directions of arrows A1 and A2). A first space which is divided into three by a wall 154 and a second partition wall 156 provided in the vicinity of the outlet connection portion 24, and the internal space 26 a is between the first partition wall 154 and the upper wall of the first header 152. It is divided into a part 162 and a second space part 164 partitioned by a first partition wall 154 and a second partition wall 156. In the first header 152, the first and second space portions 162 and 164 function as the condensing unit S1.

  The inlet connection 22 is connected to the first header 152 with respect to the first space 162, and the inlet connection 22 is connected to the center of the height of the first space 162 (virtual line M). And is connected to a position that is upward (in the direction of arrow A2). In addition, this inlet connection part 22 has the 2nd supply path 36 inclined by the predetermined angle with respect to the 1st supply path 34 similarly to the condenser 10 which concerns on 1st Embodiment.

  Further, the internal space 26 a of the first header 152 is formed with a third space 166 between the lower end thereof and the second partition wall 156, and the outlet connection portion 24 is connected thereto.

  On the other hand, the second header 158 is provided with a third partition wall 160 above the position where the connection pipe 52 is connected, and the internal space 26b is located above the second header 158 by the third partition wall 160. It is divided into a fourth space 170 provided and a fifth space 172 provided below. The connecting pipe 52 is connected to the fifth space 172.

  In the condenser 150 according to the above-described third embodiment, the first header 152 is supplied when the high-temperature and high-pressure gaseous refrigerant is supplied to the first supply passage 34 of the inlet connection portion 22 through the supply pipe 28. The first space 162 is introduced toward a substantially central portion along the height direction (arrow A1, A2 direction).

  As a result, the refrigerant is not introduced only in the vicinity of the upper end of the first header 152 to which the inlet connection portion 22 is connected in the height direction (arrow A1, A2 direction) of the first space 162. It is also introduced into the substantially central portion and the lower vicinity along the height direction of the space portion 162. That is, it is avoided that the refrigerant for the first space portion 162 is concentrated and supplied in the vicinity of the upper end portion to which the inlet connection portion 22 is connected. Are also supplied so as to be substantially uniform.

  The refrigerant supplied to the first space 162 of the first header 152 flows so as to be substantially equal to each tube 16, and passes through the tubes 16 to the fourth space 170 of the second header 158. Then, it flows again through the tubes 16 to the first header 152 side (in the direction of arrow B1) and is introduced into the second space 164. The refrigerant flows from the second space portion 164 again through the tubes 16 to the second header 158 side (in the direction of arrow B2) and is introduced into the fifth space portion 172, and the inside of the third header 20 through the connection pipe 52. After moving to the space 26c, the liquid is separated into gas and liquid, and only the liquid refrigerant flows through the plurality of tubes 16 to the first header 152 side (arrow B1 direction), thereby further cooling.

  Finally, the liquid refrigerant introduced into the third space portion 166 of the first header 152 through the tube 16 is led out to the discharge pipe 42 through the discharge passage 40 of the outlet connection portion 24.

  Note that the condensers 10, 100, and 150 described above are not limited to the number of passes in the condensing unit S1, and are the space portions of the first headers 12, 102, and 152 that are the uppermost in the gravitational direction (the direction of the arrow A2). Even if the inlet connection portion 22 is connected to a position that is above or below the center in the height direction, it is connected to the space portion as long as it has a channel that is inclined toward the center in the height direction. It becomes possible to circulate the refrigerant with respect to each of the tubes 16 made without any bias.

  In addition, the condenser according to the present invention is not limited to the above-described embodiment, and various configurations can be adopted without departing from the gist of the present invention.

10, 60, 70, 100, 150 ... Condenser 12, 102, 152 ... First header 14, 158 ... Second header 16 ... Tube 18 ... Fin 20 ... Third header 22, 62, 72, 104 ... Inlet connection 24 ... outlet connection part 30 ... main body part 32, 106 ... inclined part 34, 64, 74 ... first supply passage 36, 66, 76, 108 ... second supply passage 38, 44, 110 ... communication hole 48, 162 ... first 1st space part 50, 164 ... 2nd space part 52 ... Connection pipe 154 ... 1st partition wall 156 ... 2nd partition wall 160 ... 3rd partition wall 166 ... 3rd space part 170 ... 4th space part 172 ... 5th space Part S1 ... Condensing part S2 ... Supercooling part

Claims (6)

A pair of headers spaced apart from each other and having a space portion into which a refrigerant is introduced, a plurality of tubes each having both end portions along the longitudinal direction connected to the header, and adjacent tubes A condenser having a plurality of fins provided therebetween, wherein the tube and the fins constitute a condensation core, and the condenser performs heat exchange of the refrigerant in the condensation core,
One of the headers is connected to an inlet connection portion to which the first pipe supplied with the refrigerant is connected and an outlet connection portion to which the second pipe from which the refrigerant is discharged is connected, and the inlet connection portion. Includes a flow path through which the refrigerant flows, and the flow path is inclined at a predetermined angle so as to be directed toward the center along the extending direction of the space portion disposed most upward in the gravitational direction in the header. A condenser characterized by being connected. The condenser of claim 1.
The flow path has a first opening connected to the first pipe and a second opening connected to the header, and the second opening is orthogonal to the axis of the first opening. A condenser which is arranged so as not to overlap on a virtual projection plane. The condenser according to claim 1 or 2,
The condenser having a change means for changing a flow direction of the refrigerant between the first opening and the second opening in the flow path. The condenser of claim 3.
The condenser is characterized in that the changing means is an inclined portion formed to be inclined toward the height center side of the condensation core. The condenser according to any one of claims 1 to 4,
The condensing core has a first core part through which the refrigerant flows from one header provided with the inlet connection part to the other header, and a second through which the refrigerant circulates through the other header to the one header. And the space portion arranged above the most gravitational direction is provided in the first core portion, and the inlet connection portion is located above the center of the space portion in the gravitational direction or A condenser characterized by being provided below. The condenser according to any one of claims 1 to 5,
The condenser, wherein the inlet connection portion and the header are joined by brazing.

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