JP6251613B2 - Heat exchanger - Google Patents

Description

  The present invention relates to a heat exchanger applied to a vehicle.

  Conventionally, as a heat exchanger, a heat exchanger tube as a plurality of heat exchange paths that extend in the vertical direction and through which refrigerant flows is arranged in parallel in a direction orthogonal to the air flow direction, and a plurality of heat A plurality of tanks that communicate with the ends of the exchange pipes and that are arranged adjacent to each other in the air flow direction to distribute or collect the refrigerant flowing through the heat exchange pipes, and a seal that closes the longitudinal ends of the plurality of tanks The thing provided with the cap as an end plate which has a recessed part as a part is known (for example, refer patent document 1).

  In this heat exchanger, two tanks arranged on the upper side among the plurality of tanks are arranged adjacent to each other in the air flow direction, and one tank arranged on the lower side is arranged.

  In such a heat exchanger, the refrigerant flows into one tank arranged on the upper side, distributes the refrigerant to a plurality of heat exchange tubes, and collects the refrigerant in the tank arranged on the lower side via the heat exchange tubes. The refrigerant is distributed to the other tank arranged on the upper side via the plurality of heat exchange tubes, and the refrigerant is caused to flow out from the other tank.

  Heat is exchanged between the refrigerant flowing through the heat exchange pipe and the air flowing through the core portion by flowing the refrigerant through the heat exchange pipe communicated between the plurality of tanks.

JP 2005-90946 A

  By the way, in the heat exchanger like the above-mentioned patent document 1, two tanks arranged adjacent to the air flow direction arranged on the upper side are connected to the refrigerant outlet after heat exchange with the refrigerant inlet. Therefore, it is not necessary to collect the refrigerant, and they are spaced apart in the air flow direction.

  However, in order to interfere with peripheral members and improve heat exchange efficiency, for example, when changing the refrigerant flow path to collect refrigerant flowing between two tanks arranged on the upper side, The tank must be changed to one tank, and the flow path cannot be easily changed.

  In view of the above, an object of the present invention is to provide a heat exchanger that allows refrigerant to flow between tanks arranged adjacent to each other in the air flow direction and can easily change the flow path.

  According to the first aspect of the present invention, a plurality of heat exchange paths that extend in the vertical direction and through which the refrigerant flows are arranged in parallel in a direction orthogonal to the air flow direction, and ends of the plurality of heat exchange paths And a plurality of tanks that are arranged adjacent to each other in the air flow direction and distribute or collect the refrigerant flowing through the heat exchange path, and a sealing portion that closes the longitudinal ends of the plurality of tanks. An end plate and a heat exchanger, wherein the end plates closing the plurality of tanks arranged adjacent to each other in the air flow direction are integrally formed, and between the air flow directions of the adjacent tanks A space securing part that holds a gap is provided, and the space securing part is provided with a communicating part that penetrates between adjacent tanks, and a surface that contacts the space securing part of the adjacent tanks, The space A communication hole penetrating toward the holding portion is provided, and the communication portion and the communication hole are at least partially matched, and the refrigerant flowing through the adjacent tanks is arranged to be able to flow. To do.

  In this heat exchanger, the end plate is provided with a space securing portion that holds the gap between the air flow directions of adjacent tanks, so the gap between the tanks arranged adjacent to each other in the air flow direction is held. be able to.

  In addition, the communication portion provided in the space securing portion and the communication hole provided in the tank arranged adjacent to the air flow direction are at least partially matched, and the refrigerant flowing in the adjacent tank is arranged to be able to flow. Therefore, the refrigerant flowing through the adjacent tanks can be gathered while maintaining the gap between the adjacent tanks by the space securing portion.

  For this reason, the flow path of a refrigerant | coolant can be easily changed, without changing the several tank arrange | positioned adjacent to an air flow direction into one tank. In addition, when the adjacent tanks are not communicated with each other, the communication hole is closed while maintaining a gap between the adjacent tanks by arranging a space securing part in which no communication part is provided between the communication holes. be able to.

  Therefore, in such a heat exchanger, the refrigerant can be circulated between tanks arranged adjacent to each other in the air flow direction, and the flow path can be easily changed.

  A second aspect of the present invention is the heat exchanger according to the first aspect, wherein the tank is extruded.

  In this heat exchanger, since the tank is extrusion molded, the outer peripheral surface of the tank can be formed to be flush with each other, the tank and the space securing part can be assembled in close contact, and brazeability is improved. Can be improved.

  A third aspect of the present invention is the heat exchanger according to the first or second aspect, wherein the plurality of tanks disposed adjacent to each other in the air flow direction are disposed on a lower side. .

  In this heat exchanger, since a plurality of tanks arranged adjacent to each other in the air flow direction are arranged on the lower side, condensed water generated in the heat exchange path can be drained from a gap between adjacent tanks, It is possible to prevent stagnation of condensed water.

  Invention of Claim 4 is a heat exchanger of any one of Claim 1 thru | or 3, Comprising: The upper surface of the said space securing part is between the air flow directions of the said tank adjacent from the said sealing part. It is characterized by being inclined downward toward the gap.

  In this heat exchanger, the upper surface of the space securing portion is inclined downward toward the gap between the air flow directions of the adjacent tanks from the sealing portion, so that the condensed water that tends to stay on the upper surface of the space securing portion. Etc. can be guided to the gap between adjacent tanks, and drainage can be improved.

  Advantageous Effects of Invention According to the present invention, there is an effect that it is possible to provide a heat exchanger that enables circulation of refrigerant between tanks arranged adjacent to each other in the air flow direction and can easily change the flow path.

It is a perspective view of the heat exchanger which concerns on embodiment of this invention. It is a perspective view of the tank of the heat exchanger which concerns on embodiment of this invention. It is sectional drawing of the tank of the heat exchanger which concerns on embodiment of this invention. It is a perspective view of the end plate of the heat exchanger which concerns on embodiment of this invention. It is a side view of the end plate of the heat exchanger which concerns on embodiment of this invention. It is a perspective view when attaching an end plate to the tank of the heat exchanger concerning an embodiment of the invention. It is a schematic diagram which shows the flow path of the refrigerant | coolant of the heat exchanger which concerns on embodiment of this invention.

  The heat exchanger which concerns on embodiment of this invention is demonstrated using FIGS.

  The heat exchanger 1 according to the present embodiment includes a plurality of core portions 5 that are arranged in parallel in a direction orthogonal to the air flow direction, in a plurality of heat exchange paths 3 that extend in the vertical direction and through which the refrigerant flows. A plurality of tanks 7 that communicate with the end of the heat exchange path 3 and that are arranged adjacent to each other in the air flow direction and distribute or collect the refrigerant flowing through the heat exchange path 3, and longitudinal ends of the plurality of tanks 7 And an end plate 11 having a sealing portion 9 that closes.

  Further, the end plate 11 that closes the plurality of tanks 7 arranged adjacent to each other in the air flow direction is integrally formed, and a space securing portion 13 that holds a gap C between the air flow directions of the adjacent tanks 7 and 7. Is provided.

  Further, the space securing portion 13 is provided with a communication portion 15 that penetrates between the adjacent tanks 7, 7. The space securing portion 13 is provided on the surface of the adjacent tank 7, 7 that contacts the space securing portion 13. Communicating holes 17 and 17 penetrating toward each other are provided.

  And the communication part 15 and the communication holes 17 and 17 are at least partially matched, and the refrigerant | coolant which flows through the adjacent tanks 7 and 7 is arrange | positioned so that distribution | circulation is possible.

  The tank 7 is extrusion molded.

  Further, the plurality of tanks 7 disposed adjacent to each other in the air flow direction are disposed on the lower side.

  Further, the upper surface of the space securing portion 13 is inclined downward toward the gap C between the air flow directions of the adjacent tanks 7 and 7 from the sealing portion 9.

  Here, the heat exchanger 1 according to the present embodiment is applied to, for example, a vehicle air conditioner, and the core unit 5 is arranged in a direction orthogonal to the direction of air flow, and the air flowing through the core unit 5 It functions as an evaporator that performs heat exchange with the refrigerant and cools the air.

  As shown in FIGS. 1-7, the core part 5 is arrange | positioned in the direction orthogonal to an air flow direction, and is from the heat exchange pipe extended in the up-down direction, such as aluminum and aluminum alloy into which a refrigerant | coolant flows inside. Heat exchange efficiency between the refrigerant and the air by agitating the air that is brazed to the outer peripheral surfaces of the heat exchange paths 3 made of aluminum or aluminum alloy and flows outside the heat exchange paths 3. And fins to improve.

  The core portion 5 constitutes a heat exchange path group 19 in which a plurality of heat exchange paths 3 and fins are arranged in parallel in a direction orthogonal to the air flow direction, and the heat exchange path group 19 is in the air flow direction. They are arranged in two rows before and after.

  In addition, the side plate which reinforces the assembly | attachment state of the core part 5 with respect to the several tank 7 arrange | positioned ranging over the air flow direction on both sides of the direction orthogonal to the air flow direction of the heat exchange path groups 19 and 19 of 2 rows. 21 are brazed to a plurality of tanks 7, respectively.

  Such a core part 5 is communicated with a plurality of tanks 7 in which both ends in the longitudinal direction (vertical direction) of the plurality of heat exchange paths 3 are respectively arranged in the vertical direction, and the refrigerant is distributed from the plurality of tanks 7. Alternatively, the refrigerant is collected in a plurality of tanks 7, heat is exchanged between the refrigerant flowing in the plurality of heat exchange paths 3 and the air flowing in the outer periphery of the plurality of heat exchange paths 3, thereby cooling the air.

  The plurality of tanks 7 are made of aluminum, aluminum alloy, or the like, and are formed by extrusion molding. Two tanks 7 are arranged on the upper side of the core portion 5 in the front-rear direction adjacent to the air flow direction. Two are arranged in the front-rear direction adjacent to the air flow direction.

  Among the plurality of tanks 7, the tank 7 disposed on the upper side has a plurality of insertion portions 23 (disposed on the lower side) penetrating into the lower surface in the longitudinal direction of the tank 7 (direction perpendicular to the air flow direction). (See the upper surface of the tank 7). The upper end portions of the plurality of heat exchange paths 3 of the core portion 5 are respectively inserted into the plurality of insertion portions 23 and brazed.

  An inlet pipe 25 for allowing the refrigerant to flow into the plurality of tanks 7 is connected to one end side in the longitudinal direction of the tank 7 located on the rear side (downstream side) of the air flow direction among the tanks 7 disposed on the upper side, An outlet pipe 27 through which the refrigerant that has exchanged heat with air flows out is connected to one end side in the longitudinal direction of the tank 7 located on the front side (upstream side) in the air flow direction.

  On the other hand, in the tank 7 arranged below the plurality of tanks 7, a plurality of insertion portions 23 penetrating the inside in the longitudinal direction of the tank 7 are provided in parallel on the upper surface. The lower end portions of the plurality of heat exchange paths 3 of the core portion 5 are respectively inserted into the plurality of insertion portions 23 and brazed.

  The end portions in the longitudinal direction of the plurality of tanks 7 are closed by the sealing portions 9 of the end plates 11 except for the end portions to which the inlet pipe 25 and the outlet pipe 27 are connected.

  The end plate 11 is made of aluminum, an aluminum alloy, or the like, and includes a sealing portion 9 and a space securing portion 13. The sealing portion 9 is formed in a concave shape so as to cover the outer periphery of the end portion of the tank 7, and is assembled and brazed so as to close the end portion of the tank 7.

  The sealing portion 9 is formed of a single member in which the sealing portions 9 and 9 that block the end portions of adjacent tanks 7 and 7 that are arranged adjacent to each other in the air flow direction are continuous. For this reason, by assembling the end plate 11 to the ends of the plurality of tanks 7, the tanks 7 and 7 adjacent in the air flow direction are connected by the sealing portions 9 and 9, and the assembled state of the heat exchanger 1 is changed. Can be reinforced. Between such sealing parts 9 and 9, the space ensuring part 13 is formed with one continuous member.

  The space securing part 13 extends from the sealing part 9 side in a direction (longitudinal direction of the tank 7) perpendicular to the air flow direction. The thickness (length in the air flow direction) of the space securing portion 13 is set to be equal to the gap C between the air flow directions of the tanks 7 and 7 adjacent in the air flow direction.

  Such a space securing portion 13 is inserted into the gap C between the tanks 7 and 7 adjacent in the air flow direction by assembling the sealing portion 9 to the end of the tank 7, and both side surfaces of the tanks 7 and 7 are inserted. Brazed against the side. At this time, since the tank 7 is extrusion-molded, the side surface of the tank 7 is flush, the adhesion between the tank 7 and the space securing portion 13 is good, and the brazing property is improved.

  Thus, by arranging the space securing portion 13 in the gap C between the tanks 7 and 7 adjacent in the air flow direction, the gap C between the adjacent tanks 7 and 7 does not fluctuate and the gap C is stably secured. can do.

  By securing the gap C between the tanks 7 and 7 adjacent to each other in the air flow direction in this way, the condensed water generated on the upper surface side of the plurality of tanks 7 due to the temperature difference between the air and the refrigerant is drained from the gap C. And the retention of condensed water or the like can be prevented.

  In particular, condensed water or the like generated in the heat exchange path 3 of the core portion 5 flows toward the lower tank 7, but a gap C between the tanks 7 and 7 that are arranged on the lower side and adjacent to the air flow direction is secured. By doing so, retention of condensed water or the like can be reliably prevented.

  On the other hand, the upper surface of the space securing portion 13 is inclined downward toward the gap C between the air flow directions of the adjacent tanks 7 and 7 from the sealing portion 9. Specifically, the height H1 on the sealing portion 9 side of the space securing portion 13 is set to be higher than the height H2 on the end portion (gap C) side of the space securing portion 13.

  By setting the upper surface of the space securing part 13 in this way, condensed water or the like that is about to stay on the upper surface of the space securing part 13 can be guided to the gap C along the inclination of the upper surface of the space securing part 13, Drainage can be improved. The space securing unit 13 is provided with a communication unit 15.

  The communication portion 15 is assembled to one end side of the tanks 7 and 7 arranged on the lower side of the end plate 11 assembled to the end portions of the plurality of tanks 7 in the refrigerant flow path according to the present embodiment. The space securing portion 13 of the end plate 11 is provided.

  The communication portion 15 is formed of a long hole-shaped hole provided so as to penetrate the space securing portion 13 in the thickness direction so as to communicate between the tanks 7 and 7 adjacent in the air flow direction. Such a communication portion 15 is at least connected to the communication holes 17 and 17 provided on the side surfaces of the tanks 7 and 7 in a state where the space securing portion 13 is disposed in the gap C between the tanks 7 and 7 adjacent in the air flow direction. Some are set to match.

  The communication holes 17 are provided on the side surfaces of the tanks 7 and 7 adjacent to the space securing portion 13 in the air flow direction, respectively, and are provided so as to communicate between the inside of the tank 7 and the space securing portion 13 side. It consists of an elongated hole.

  The communication holes 17 and 17 of the tanks 7 and 7 adjacent to each other in the air flow direction are communicated via the communication part 15 of the space securing part 13 and the respective refrigerants flowing in the tanks 7 and 7 adjacent to each other in the air flow direction. Can be assembled.

  In this way, separate tanks 7 and 7 adjacent to each other in the air flow direction are communicated by the communication part 15 of the space securing part 13 so that the gap C between the tanks 7 and 7 is maintained and the drainage is maintained. It is possible to design a refrigerant flow path for collecting refrigerant flowing through the body tanks 7 and 7.

  Here, in the heat exchanger 1 which concerns on this Embodiment, as shown in FIG. 7, heat exchange is performed 3 times in the heat exchange path group 19 arrange | positioned at the back side (downstream side) of an air flow direction ( 3 passes), the heat exchange path group 19 arranged on the front side (upstream side) in the air flow direction performs 3 heat exchanges (3 passes), and 6 heat exchanges as a whole (6 passes) The refrigerant flow path is designed.

  By such a refrigerant flow path design, partition walls 29 and 29 are provided on the inlet pipe 25 and outlet pipe 27 side in the tanks 7 and 7 adjacent to each other in the air flow direction arranged on the upper side, and arranged on the lower side. Partition walls 31, 31 are provided on the side of the communication holes 17, 17 in the tanks 7, 7 adjacent to each other in the air flow direction, and the tanks 7, 7 arranged on the upper side are not communicated with each other. The tanks 7 and 7 arranged in the tank are communicated with each other.

  For this reason, in the refrigerant | coolant flow path which concerns on this Embodiment, since it is not necessary to connect between the tanks 7 and 7 adjacent to the air flow direction arrange | positioned at the upper side, it is an end plate which obstruct | occludes the upper tanks 7 and 7. 11, the space securing portion 13 is not provided with the communication portion 15, and the communication holes 17 and 17 of the adjacent tanks 7 and 7 are closed by both side surfaces of the space securing portion 13.

  By adjusting the presence / absence of the communication portion 15 of the space securing portion 13 in this way, the tank 7 disposed on the upper side and the tank 7 disposed on the lower side can be shared, and without using a separate member. Various flow path changes can be handled at low cost.

  In the heat exchanger 1 configured as described above, the refrigerant flows into one tank 7 disposed on the upper side from the inlet pipe 25, and the heat exchange path group disposed on the rear side (downstream side) in the air flow direction. In 19, heat exchange is performed three times between the air and the refrigerant.

  Next, the refrigerant flows into the other tank 7 disposed on the lower side from the one tank 7 disposed on the lower side through the communication holes 17, 17 and the communication portion 15 of the space securing portion 13, and the air In the heat exchange path group 19 arranged on the front side (upstream side) in the flow direction, heat exchange is performed three times between the air and the refrigerant.

  And the refrigerant | coolant which performed the heat exchange 6 times in total with air flows out into the exit piping 27 from the inside of the other tank 7 arrange | positioned above.

  In such a heat exchanger 1, the end plate 11 is provided with the space securing portion 13 that holds the gap C between the air flow directions of the adjacent tanks 7, 7, so that it is disposed adjacent to the air flow direction. A gap C between the tanks 7 and 7 can be maintained.

  In addition, the communication portion 15 provided in the space securing portion 13 and the communication holes 17 and 17 provided in the tanks 7 and 7 disposed adjacent to each other in the air flow direction are at least partially matched and adjacent to each other. The refrigerant flowing through the tanks 7 and 7 can be circulated so that the space securing portion 13 can keep the gap C between the adjacent tanks 7 and 7 and collect the refrigerant flowing through the adjacent tanks 7 and 7.

  For this reason, the flow path of the refrigerant can be easily changed without changing the plurality of tanks 7 arranged adjacent to each other in the air flow direction to one tank. In addition, when the adjacent tanks 7 and 7 are not communicated with each other, by arranging the space securing portion 13 where the communication portion 15 is not provided between the communication holes 17 and 17, the adjacent tanks 7 and 7 are arranged. The communication holes 17 and 17 can be closed while the gap C is maintained.

  Therefore, in such a heat exchanger 1, the refrigerant can be circulated between the tanks 7 and 7 arranged adjacent to each other in the air flow direction, and the flow path can be easily changed.

  Moreover, since the tank 7 is extrusion-molded, the outer peripheral surface of the tank 7 can be formed to be flush with each other, the tank 7 and the space securing portion 13 can be assembled in close contact with each other, and brazeability can be improved. Can be improved.

  Further, since the plurality of tanks 7 disposed adjacent to each other in the air flow direction are disposed on the lower side, the condensed water generated in the heat exchange path 3 is drained from the gap C between the adjacent tanks 7 and 7. And the retention of condensed water or the like can be prevented.

  Further, since the upper surface of the space securing portion 13 is inclined downward from the sealing portion 9 toward the gap C between the air flow directions of the adjacent tanks 7 and 7, it tends to stay on the upper surface of the space securing portion 13. Condensed water or the like to be conducted can be guided to the gap C between the adjacent tanks 7 and 7, and drainage can be improved.

  In the heat exchanger according to the embodiment of the present invention, the plurality of tanks arranged on the upper side and the lower side are separated from each other, but not limited to this, only the upper side or the lower side is separated. It is good also as a tank and making the other into one tank.

  In addition, the communication part and the communication hole have almost the same opening, but this is not limiting, and the communication part and the communication hole can communicate with each other between a plurality of tanks arranged adjacent to each other in the air flow direction. As long as a part of the opening coincides at least.

  Furthermore, the plurality of tanks arranged on the upper side are not communicated via the communication part of the space securing part, but are not limited to this, for example, the plurality of tanks arranged on the lower side are not communicated, The presence or absence of communication of the plurality of tanks may be appropriately selected according to the flow path design of the refrigerant, such as communication of the plurality of tanks arranged in the tank via the communication section of the space securing section.

  Further, two of the plurality of tanks arranged on the upper side and the lower side are arranged adjacent to each other in the air flow direction, but not limited to this, two or more tanks are arranged adjacent to each other in the air flow direction. The present invention can be applied even with such a configuration.

DESCRIPTION OF SYMBOLS 1 ... Heat exchanger 3 ... Heat exchange path 5 ... Core part 7 ... Tank 9 ... Sealing part 11 ... End plate C ... Gap 13 ... Space securing part 15 ... Communication part 17 ... Communication hole

Claims (4)

A plurality of heat exchange paths (3) that extend in the vertical direction and through which the refrigerant flows are arranged in parallel in a direction orthogonal to the air flow direction, and the heat exchange paths (3) A plurality of tanks (7) communicating with the end portions and arranged adjacent to each other in the air flow direction and distributing or collecting the refrigerant flowing through the heat exchange path, and longitudinal end portions of the plurality of tanks (7) A heat exchanger (1) comprising an end plate (11) having a sealing part (9) to be closed,
The end plate (11) that closes the plurality of tanks (7) arranged adjacent to each other in the air flow direction is integrally formed, and a gap (C) between the air flow directions of the adjacent tanks (7). A space securing part (13) for holding
The space securing part (13) is provided with a communicating part (15) penetrating between the adjacent tanks (7, 7), and the space securing part (15) of the adjacent tanks (7, 7). ) Are provided with communication holes (17, 17) penetrating toward the space securing portion (13),
The communication part (15) and the communication hole (17, 17) are at least partially matched, and are arranged so that the refrigerant flowing through the adjacent tanks (7, 7) can flow. Heat exchanger (1). A heat exchanger (1) according to claim 1,
The heat exchanger (1), wherein the tank (7) is extruded. The heat exchanger (1) according to claim 1 or 2,
The heat exchanger (1), wherein the plurality of tanks (7) disposed adjacent to each other in the air flow direction are disposed on a lower side. A heat exchanger (1) according to any one of claims 1 to 3,
The upper surface of the space securing portion (13) is inclined downward toward the gap (C) between the air flow directions of the tanks (7, 7) adjacent to the sealing portion (9). A heat exchanger (1).

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