JP2013122368A - Vehicle heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle heat exchanger capable of improving efficiency of heat exchange by changing flows of flow-in operation fluids and generating a disturbance flow, and thereby improving cooling performance.SOLUTION: A vehicle heat exchanger comprises: a tank formed such that a first operation fluid can flow in and can be discharged through a first flow-in port and a first discharge port; a first header and a second header which are attached to a lower part and an upper part of the tank, form a first chamber and a second chamber, and make the second operation fluid flow in and discharge the fluid through a second flow-in port and a second discharge port; and a plurality of heat dissipation units which have coupling pipes formed by combining plates formed with a plurality of protrusions along the longitudinal direction, and make the fluid flow through the first chamber of the first header and the second chamber of the second header. A connecting passage in which the second fluid flows is formed in the coupling pipe, and the second operation fluid flowing in the coupling pipe is heat-exchanged with the first operation fluid flowing outside the coupling pipe and cooled.

Description

  The present invention relates to a vehicular heat exchanger, and more particularly to a vehicular heat exchanger in which respective working fluids are introduced and heat is mutually exchanged to adjust the temperature.

The recent automobile industry has been researched to improve fuel economy as interest in the environment and energy has increased, and it has become lighter, smaller and more functional in order to satisfy diverse consumer demands. Research and development for is ongoing.
Heat exchangers transfer heat from a high temperature fluid to a low temperature fluid through a heat transfer wall, and are used in radiators, heaters, coolers, evaporators, condensers, etc. Is installed in the engine room and applied to air conditioning systems and transmission oil coolers.

  When heat exchangers are installed in the engine room, it is difficult to install them due to the limited space. Therefore, heat exchangers are required to be smaller, lighter, and more efficient. Research has continued [see, for example, Patent Documents 1 to 3].

  Recently, plate-type heat exchangers in which plates are stacked and cooling water is used as a heat exchange medium, and shell and tube type heat exchangers in which thinner pipes are arranged inside pipes have been developed. ing. However, the plate heat exchanger has to increase the thickness of the plate when the heat exchange between the high-pressure fluid and the low-pressure fluid is performed, the heat exchange efficiency between the working fluids is reduced, and the production cost is increased. There are problems such as increasing the overall weight. The shell-and-tube type heat exchanger is relatively excellent in heat exchange efficiency, but it is difficult to make the fluid turbulent, and further, there is a problem that it is difficult to increase the heat exchange efficiency compared to the manufacturing cost because it is a double pipe.

JP 2006-162176 A JP 2008-170140 A JP 2010-196626 A

  The object of the present invention made to solve the above problems is to improve the heat exchange efficiency and the cooling performance by changing the flow of the inflowing working fluid and causing the turbulent flow. To provide an exchange.

  In order to achieve the above object, a vehicle heat exchanger according to the present invention includes a tank formed so that a first working fluid can flow in and out through a first inlet port and a first outlet port, a lower portion of the tank, A first header and a second header mounted on the top, forming a first chamber and a second chamber, and allowing a second working fluid to flow in and out through the second inlet port and the second outlet port, respectively; A coupling pipe formed by combining a plate formed with a plurality of protrusions along the length direction so that fluid can flow through the first chamber of the first header and the second chamber of the second header. A plurality of heat dissipating units connected to each other, and a connection flow path through which the second working fluid flows is formed inside the coupling pipe, and the second working fluid flowing through the coupling pipe passes outside the coupling pipe. Flowing first operation It is cooled by the body heat exchange.

Hereinafter, the preferable form of the heat exchanger for vehicles which concerns on this invention is given.
A first mounting hole connected to the first chamber and a second mounting hole connected to the second chamber are formed in the first header and the second header, respectively. 2 are inserted into the mounting holes, respectively.

  The first inflow port and the first discharge port are disposed diagonally between the first chamber and the second chamber, respectively, on one side upper part and the other side lower part of the tank. Are arranged in a diagonal direction on the lower surface and the upper surface.

Each protrusion is integrally formed on the plate by press molding. Moreover, the protrusion has an outer peripheral surface and an inner peripheral surface formed in a semicircular shape, and is arranged in a spiral shape along the length direction of the plate.
Both ends of the heat dissipation unit are inserted into the first header and the second header, respectively, and no protrusions are formed at both ends of the heat dissipation unit.

Each coupling pipe is a circular pipe formed by a plurality of projecting portions, and the inner peripheral surface and the outer peripheral surface of the coupling pipe are formed in a spiral shape and are rotated by the second working fluid flowing inside the connection flow path. A vortex flow is generated, and turbulent flow formation is induced in the first working fluid passing outside the connection flow path.
The coupling tube is formed by coupling a pair of plates in a state where the protruding portions of the pair of plates are arranged so as to project outward.

Adjacent heat dissipation units are arranged so as to cross each other in the width direction, and a coupling pipe of one adjacent heat dissipation unit is arranged between adjacent coupling pipes of another adjacent heat dissipation unit.
The number of coupling pipes included in the heat dissipation unit is adjusted according to the size of the first header and the second header.
The coupling pipes constituting one heat radiating unit are assembled so as to be separable from each other.

A plurality of rows of protrusions are formed on one plate, and one plate is folded to form a heat radiating unit so that one row of protrusions forms a coupling tube together with the other row of protrusions.
The plate is provided with a plurality of flow holes formed between the coupling tubes.
The flow direction of the second working fluid that passes through the inside of the coupling channel of the coupling pipe is opposite to the flow direction of the first working fluid that passes through the outside of the coupling pipe.

The first inflow port and the first discharge port are formed through the second header and the first header at the upper and lower portions of the tank, and are arranged diagonally on the upper surface and the lower surface of the tank, respectively.
The second inlet port is formed on the lower surface of the tank in the diagonal direction of the first outlet port, and the second outlet port is formed on the upper surface of the tank in the diagonal direction of the first inlet port.
The first working fluid flowing into the first inflow port and the second working fluid flowing into the second inflow port exchange heat while moving in opposite directions within the tank.

  According to the vehicle heat exchanger of the present invention, by changing the flow of the working fluid flowing inside the vehicle and causing turbulent flow, the heat exchange efficiency between the working fluids is improved and the overall cooling performance is improved. be able to. In addition, the heat exchange efficiency can be further increased by combining the plates on which the spiral protrusions are formed to form a spiral coupling tube having a connection channel. Moreover, the cross-sectional shape of the connection flow path through which the high-pressure working fluid flows can be made circular, and durability can be improved compared to the conventional plate heat exchanger. It is easy to manufacture, reduces manufacturing costs, and lowers overall weight.

It is a projection perspective view of the heat exchanger for vehicles concerning the present invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a perspective view of the thermal radiation unit applied to 1st Embodiment of the heat exchanger for vehicles which concerns on this invention. It is a disassembled perspective view of the thermal radiation unit of FIG. It is an operation state figure of a 1st embodiment in the heat exchanger for vehicles concerning the present invention. It is an operation state figure of a 1st embodiment in the heat exchanger for vehicles concerning the present invention. It is a perspective view of 2nd Embodiment of the heat exchanger for vehicles which concerns on this invention. It is CC sectional view taken on the line of FIG. It is an operation state figure of a 2nd embodiment of the heat exchanger for vehicles concerning the present invention.

DESCRIPTION OF EMBODIMENTS Hereinafter, a vehicle heat exchanger according to the present invention will be described with reference to the accompanying drawings with preferred embodiments.
1 is a projected perspective view of a vehicle heat exchanger according to the first embodiment, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is a perspective view of a heat dissipation unit applied to the vehicle heat exchanger according to the first embodiment, and FIG. 5 is an exploded perspective view of the heat dissipation unit.

  The vehicular heat exchanger 100 has a structure capable of improving the heat exchange efficiency of the working fluid and improving the cooling performance by changing the flow of the working fluid flowing in and causing turbulent flow. 1 header 120, second header 130, and heat dissipation unit 140.

  The tank 110 includes a first inflow port 112 and a first exhaust port 114, and the first working fluid flows in through the first inflow port 112, and the first working fluid is discharged through the first exhaust port 114. To do. The first header 120 and the second header 130 are mounted on the lower and upper portions of the tank 110, respectively, and form a first chamber 124 and a second chamber 134 between the tank 110 walls.

  That is, a first chamber 120 is formed in the lower part of the tank 110 by the first header 120, and a second chamber 134 is formed in the upper part of the tank 110 by the second header 130. The second chamber 134 communicates with the second discharge port 132 through which the second working fluid is discharged. The first chamber 124 temporarily stores the second working fluid that has flowed in through the second inflow port 122, and the second chamber 134 temporarily stores the second working fluid that is discharged through the second discharge port 132. It becomes like this.

  Further, both ends of the heat radiation unit 140 are attached to the upper surface of the first header 120 and the lower surface of the second header 130, respectively. The heat dissipating unit 140 includes a coupling pipe 148 formed by coupling a plate 142 having a plurality of protrusions 144 formed along the length direction, and a coupling flow path 146 is provided inside the coupling pipe 148. The second working fluid flows from the first chamber 124 to the second chamber 134 through the connection channel 146.

  Accordingly, the second working fluid enters the first chamber 124 from the second inflow port 122, passes through the connection flow path 146 of the heat dissipation unit 140, passes through the second chamber 134, and creates a flow path that exits from the second discharge port 132. .

  On the other hand, the first working fluid enters the tank 110 from the first inflow port 112, flows in a region sandwiched between the first header 120 and the second header 130, and flows out from the first discharge port 114.

Here, the first inflow port 112 and the first discharge port 114 are disposed diagonally between the first chamber 124 and the second chamber 134 at the upper side of the one side and the lower side of the other side, respectively.
The second inlet port 122 and the second outlet port 132 are disposed diagonally on the lower surface and the upper surface of the tank 110. That is, the second inflow port 122 is formed on one side of the lower surface of the tank 110, and the second discharge port 132 is formed on the other side of the upper surface of the tank 110.

  Inside the tank 110, the first working fluid and the second working fluid are not mixed with each other, and heat is exchanged between the first working fluid and the second working fluid in the heat radiating unit 140.

  The heat radiating unit 140 is typically plate-shaped, and a plurality of the heat radiating units 140 are arranged in parallel. The second working fluid passing through the inside of the coupling pipe 148 is cooled through heat exchange with the first working fluid flowing outside the coupling pipe 148 inside the tank 110. The plurality of heat radiation units 140 connect the first header 120 and the second header 130.

  That is, the lower end of the heat dissipation unit 140 is inserted into the first mounting hole 126 formed in the first header 120, and the upper end of the heat dissipation unit 140 is inserted into the second mounting hole 136 formed in the second header 130. .

  As shown in FIG. 3, the adjacent heat dissipating units 140 are arranged such that the coupling pipes 148 are disposed between the coupling pipes 148 of the adjacent heat dissipating units 140. Further, the flow direction of the second working fluid flowing inside the connection channel 146 of the coupling pipe 148 and the flow direction of the first working fluid flowing outside the coupling pipe 148 are opposite to each other in the vertical direction and in the horizontal direction. . Thereby, the heat exchange efficiency in the thermal radiation unit 140 can be improved.

As shown in FIGS. 4 and 5, the protrusion 144 has an outer peripheral surface and an inner peripheral surface formed in a semicircular shape, and is arranged in a spiral shape along the length direction of the plate 142.
The protrusions 144 are not formed at both ends of the heat dissipation unit 140. Since both ends of the heat dissipation unit 140 are inserted into the first mounting hole 126 and the second mounting hole 136 formed in the first header 120 and the second header 130, respectively, both ends of the heat dissipation unit 140 and the first mounting hole are inserted. In order to seal between 1260 and the second mounting hole 136, both end portions of the heat dissipation unit 140 are straight.

The protrusion 144 can be processed integrally with the plate 142 by press molding.
In the present embodiment, the coupling pipe 148 is a circular pipe formed by a plurality of protrusions 144, and the inner circumferential surface and the outer circumferential surface of the coupling pipe 148 are formed in a spiral shape. With the spiral shape, when the second working fluid flows through the connection channel 146, the second working fluid rotates and induces a spiral flow. In addition, outside the coupling pipe 148, turbulent flow can be induced in the first working fluid that passes through the outside of the coupling pipe 148 to increase the heat exchange efficiency between the first working fluid and the second working fluid.

  Such a heat dissipation unit 140 can be formed by arranging and connecting a pair of plates 142 such that the protruding portion 144 protrudes outward. That is, the pair of plates 142 can be joined by welding or the like so that the inner surfaces of the projecting portions 144 face each other, and a coupling pipe 148 having a connection channel 146 inside can be formed.

  The number of coupling pipes 148 of the heat radiating unit 140 is adjusted according to the size of the first header 120 and the second header 130. Further, the coupling pipe 148 constituting one heat radiating unit 140 may be assembled so as to be separable.

  In the example shown in FIG. 3, one heat dissipation unit 140 has seven coupling pipes 148, but is not limited thereto. That is, the number of coupling pipes 148 constituting one heat radiating unit 140 can be arbitrarily set according to the sizes of the first header 120 and the second header 130.

  On the other hand, in the present embodiment, a flow hole 149 is formed in the plate 142 between the coupling pipes 148 along the length direction of the plate 142. The flow hole 149 can be formed by punching after the protruding portion 144 is press-molded by the plate 142. The flow hole 149 can allow the first working fluid flowing outside the heat radiating unit 140 to move upward or downward with respect to the heat radiating unit 140, and the first working fluid flows on the outer peripheral surface of the coupling pipe 148. It is possible to further increase the heat exchange efficiency between the first working fluid and the second working fluid.

  Although the heat radiation unit 140 has been described in the embodiment in which the two plates 142 are coupled to each other, the present invention is not limited to this. A plurality of rows of protrusions may be formed on one plate, and the heat dissipation unit may be formed by folding one plate so that one row of protrusions and the other rows of protrusions form a coupling tube.

Next, the operation and action of the vehicle heat exchanger 100 configured as described above will be described.
6 and 7 are operation state diagrams of the vehicle heat exchanger. As shown in FIG. 6, the first working fluid enters the inside of the tank 110 through the first inflow port 112. The first working fluid flows outside the coupling pipe 148 of the heat dissipation unit 140 and is discharged from the first discharge port 114.

  On the other hand, the second working fluid enters the first chamber 124 from the second inflow port 122, flows through the connection flow path 146 of the coupling pipe 148 formed in the heat radiating unit 140, flows into the second chamber 134, and then flows into the second discharge port. Exit from 132.

  By making the inner peripheral surface and the outer peripheral surface of the coupling pipe 148 into a spiral shape, the second working fluid that flows inside the connection channel 146 rotates into a spiral flow, whereas, as shown in FIG. The first working fluid that flows along the outside of the coupling pipe 148 becomes turbulent due to its spiral shape.

  At the same time, a part of the first working fluid flows through the flow hole 149 in a distributed manner above and below the multi-layered heat dissipation unit 140, which also creates a turbulent flow. Heat exchange efficiency is improved.

  8 is a perspective view of a heat exchanger for a vehicle according to another second embodiment of the present invention, FIG. 9 is a cross-sectional view taken along the line CC of FIG. 8, and FIG. 10 is a heat exchanger for a vehicle. It is an operation state figure of a device.

  Referring to the drawings, the vehicle heat exchanger 200 is the same as the vehicle heat exchanger 100 according to the first embodiment except for the mounting positions of the first inflow port 212 and the first exhaust port 214. That is, in the vehicle heat exchanger 200, the first inflow port 212 and the first exhaust port 214 pass through the second header 230 and the first header 220 at the upper and lower portions of the tank 210 as shown in FIG. Is formed.

  The first inflow port 212 and the first discharge port 214 are arranged diagonally on the upper surface and the lower surface of the tank 110, respectively. The second inlet port 222 is formed on the lower surface of the tank 210, the second outlet port 232 is formed on the upper surface of the tank 210, and the second inlet port 222 and the second outlet port 232 are formed diagonally. In addition, the second discharge port 232 is disposed diagonally to the first inflow port 212, and the second inflow port 222 is disposed diagonally to the first discharge port 214. Thereby, the 1st working fluid and the 2nd working fluid which flow through the inside of tank 210 flow in the mutually opposite direction, and mutual heat exchange is performed efficiently.

  Since the other components of the vehicle heat exchanger 200 according to the second embodiment are the same as those of the vehicle heat exchanger 100 according to the first embodiment, detailed description thereof is omitted.

  In the vehicle heat exchangers 100 and 200 according to the embodiment of the present invention, the first working fluid and the second working fluid are coolant water, engine oil, transmission oil, air conditioner refrigerant, vehicle exhaust gas, etc. that require heat exchange. Any fluid may be used. Moreover, the heat exchanger 100 of the present invention can be applied to various fields including vehicles.

  Therefore, according to the vehicle heat exchangers 100 and 200 according to the present invention, the heat exchange efficiency between the two working fluids can be improved by changing the flow of the working fluid flowing inside the vehicle and creating a turbulent flow. The overall cooling performance can be improved, and the manufacturing cost can be reduced and the overall weight can be reduced. When a high-pressure working fluid flows, the cross-sectional shape of the connection channel 146 may be circular, and the overall durability can be improved compared to a conventional plate heat exchanger.

  Although the present invention has been described with reference to the limited embodiments and drawings, the present invention is not limited thereto, and those skilled in the art to which the present invention pertains have the technical idea of the present invention and the scope of the claims. Naturally, various modifications and variations can be made within an equivalent range.

100, 200; vehicle heat exchanger 110, 210; tank 112, 212; first inlet port 114, 214; first outlet port 120, 220; first header 122, 222; second inlet port 124; 126; 1st mounting hole 130, 230; 2nd header 132, 232; 2nd discharge port 134; 2nd chamber 136; 2nd mounting hole 140; Radiation unit 142; Plate 144; Protrusion part 146; Coupling tube 149; fluid hole

Claims (18)

A tank configured to allow the first working fluid to flow in and out through the first inflow port and the first discharge port;
A first header mounted at a lower portion and an upper portion of the tank, forming a first chamber and a second chamber, and allowing a second working fluid to flow in and out through a second inlet port and a second outlet port, respectively. And a second header,
A coupling pipe formed by combining a plate having a plurality of protrusions formed along the length direction can flow through the first chamber of the first header and the second chamber of the second header. A plurality of heat dissipating units connected to each other,
Having
A connection channel through which the second working fluid flows is formed inside the coupling pipe, and the second working fluid flowing through the coupling pipe exchanges heat with the first working fluid flowing outside the coupling pipe. And the vehicle heat exchanger. The first header and the second header are formed with a first mounting hole connected to the first chamber and a second mounting hole connected to the second chamber, respectively. The vehicle heat exchanger according to claim 1, wherein the vehicle heat exchanger is inserted into each of the first mounting hole and the second mounting hole.   The first inflow port and the first exhaust port are respectively disposed diagonally between an upper portion of one side of the tank and a lower portion of the other side between the first chamber and the second chamber. The vehicle heat exchanger according to 1.   2. The vehicle heat exchanger according to claim 1, wherein the second inflow port and the second exhaust port are disposed diagonally on a lower surface and an upper surface of the tank.   The vehicle heat exchanger according to claim 1, wherein each of the protrusions is integrally formed with the plate by press molding.   2. The vehicle according to claim 1, wherein the projecting portion has an outer peripheral surface and an inner peripheral surface formed in a semicircular shape, and is arranged in a spiral shape along a length direction of the plate. Heat exchanger.   7. The vehicle according to claim 6, wherein both end portions of the heat radiating unit are inserted into the first header and the second header, respectively, and the projecting portions are not formed at both end portions of the heat radiating unit. Heat exchanger.   Each of the coupling pipes is a circular pipe formed by a plurality of protrusions, and an inner peripheral surface and an outer peripheral surface of the coupling pipe are formed in a spiral shape and flow in the connection channel. 2. The vehicle heat exchanger according to claim 1, wherein a spiral flow is generated by rotation in the fluid, and turbulent flow formation is induced in the first working fluid passing outside the connection flow path.   2. The vehicle according to claim 1, wherein the coupling pipe is formed by coupling the pair of plates in a state where the projecting portions of the pair of plates are arranged to project outward. Heat exchanger.   The adjacent heat dissipating units are disposed so as to cross each other in the width direction, and a coupling pipe of one adjacent heat dissipating unit is disposed between adjacent coupling pipes of another adjacent heat dissipating unit. The heat exchanger for vehicles according to claim 1 characterized by things.   The vehicle heat exchanger according to claim 1, wherein the number of the coupling pipes included in the heat radiating unit is adjusted according to the sizes of the first header and the second header.   The vehicle heat exchanger according to claim 11, wherein the coupling pipes constituting the one heat radiating unit are assembled so as to be separable from each other.   A plurality of rows of protrusions are formed on one plate, and the heat dissipation unit is formed by folding the one plate so that the row of protrusions forms the coupling pipe together with the protrusions of the other row. The vehicle heat exchanger according to claim 1.   The vehicle heat exchanger according to claim 1, wherein the plate includes a plurality of flow holes formed between the coupling pipes.   The flow direction of the second working fluid that passes through the inside of the connection flow path of the coupling pipe and the flow direction of the first working fluid that passes through the outside of the coupling pipe are opposite to each other. The vehicle heat exchanger according to 1.   The first inflow port and the first discharge port are formed through the second header and the first header at the upper and lower portions of the tank, and are arranged diagonally on the upper surface and the lower surface of the tank, respectively. The heat exchanger for vehicles according to claim 1 characterized by things.   The second inlet port is formed on the lower surface of the tank in a diagonal direction of the first outlet port, and the second outlet port is formed on the upper surface of the tank in a diagonal direction of the first inlet port. The heat exchanger for vehicles according to claim 16 characterized by things.   The first working fluid flowing into the first inflow port and the second working fluid flowing into the second inflow port exchange heat while moving in opposite directions within the tank. Item 18. The vehicle heat exchanger according to Item 17.

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