JP6969978B2 - Heat transfer device - Google Patents

Description

The present invention relates to a heat transfer device that removes heat from a hot object to cool the object or transfers heat to a low temperature object to heat the object.

As used herein, the term "aluminum" shall include aluminum alloys in addition to pure aluminum.

For example, as a battery device for driving an electric vehicle of a hybrid vehicle, an electric vehicle, etc., a plurality of small cell cells made of various secondary batteries such as a lithium ion secondary battery are connected in series or in parallel to form an assembled battery. Things are used. In particular, in electric vehicles, since the need for extending the cruising range requires a large capacity of assembled batteries, a plurality of assembled batteries are combined so as to be connected in series or in parallel.

By the way, since the performance and life of a secondary battery change depending on the operating temperature, it is necessary to use the secondary battery at an appropriate temperature in order to use it efficiently for a long period of time. However, in the above-mentioned assembled battery, there is a problem that a relatively large temperature difference occurs between the cells, and as a result, the cells deteriorate and the life is shortened.

Therefore, for the purpose of minimizing the temperature difference between each cell in the assembled battery, the applicant first has a plurality of passages formed in parallel through the partition wall and open at both ends. A flat plate-shaped aluminum extruded profile coolant flower, aluminum inlet headers and outlet headers provided side by side in the line-up direction of the passages at one end of the passage in the coolant flower, and coolant flow. It includes an aluminum intermediate header provided at the other end of the passage in the body in the longitudinal direction, an aluminum inlet member that allows the coolant to flow into the inlet header, and an aluminum outlet member that allows the coolant to flow out of the outlet header. , The flat one side of the coolant flower serves as the heating element mounting surface, and among all the passages, a plurality of passages formed continuously side by side on one side of the coolant flower serve as the inflow side passage and the coolant flower. A plurality of remaining passages formed continuously side by side on the other side serve as an outflow side passage, the inlet header leads to the inflow side passage, the exit header leads to the outflow side passage, and the intermediate header leads to the inflow side passage and the outflow side passage. The two are communicated through a side passage, the inlet header, outlet header and intermediate header are brazed to the coolant flower, the inlet member is brazed to the inlet header, and the outlet member is brazed to the outlet header. We have proposed a liquid-cooled cooling device (see Patent Document 1).

In the case of the liquid-cooled cooling device described in Patent Document 1, since the inlet header and the outlet header are provided at one end in the longitudinal direction of the passage in the coolant flower, the inflow pipe and the outlet for flowing the coolant into the inlet member. When it is necessary to arrange the outflow pipe for draining the coolant from the member in the middle portion in the arrangement direction of the cell cells in the assembled battery, the piping connection becomes complicated. Therefore, it is not possible to flexibly support various piping layouts.

Japanese Unexamined Patent Publication No. 2016-161158

An object of the present invention is to provide a heat transfer device that can flexibly correspond to various pipe layouts in view of the above circumstances.

The present invention comprises the following aspects in order to achieve the above object.

1) A substantially U-shaped first portion having a first straight portion having an inflow portion at one end, a second straight portion having the same end as the inflow portion as an outflow portion, and a turn portion for passing the other ends of both straight portions. A substantially U-shape having one flow path, a first straight line portion having an inflow portion at one end, a second straight line portion having the same end as the inflow portion as an outflow portion, and a turn portion for passing the other ends of both straight lines portions. A heat transfer medium flow body having a second flow path, an inlet member provided in the heat transfer medium flow body so as to communicate with the inflow portion of both flow paths, and a heat transfer so as to communicate with the outflow portion of both flow paths. It is provided with an outlet member provided on the medium flower, the heat transfer medium flower has a certain length, and the turn portions of both flow paths are located at both ends in the longitudinal direction of the heat transfer medium flower. Heat transfer device.

2) The heat transfer medium flow body is formed in parallel through a partition wall and has a plurality of passages open at both ends, and is provided at both ends of the flat pipe and through all the passages. The entire passage of the flat pipe is divided into two passage groups consisting of a plurality of continuously arranged passages, and one of two flat walls facing each other in the thickness direction of the flat pipe. In the middle part of the flat wall in the longitudinal direction, an entry-side through hole leading to all passages of one passage group and an exit-side through hole leading to all passages of the other passage group are formed, and one of them leads to the entry-side through hole. The first straight line portion of the first flow path and the second flow path is formed by the passage group of the above, and the second straight portion of the first flow path and the second flow path is formed by the other passage group leading to the exit side through hole. A turn portion of the first flow path is formed by one of the communication portions, and a turn portion of the second flow path is formed by the other communication portion, and the entrance member penetrates the outer surface of the one flat wall on the entry side. The heat transfer device according to 1) above, which is fixed so as to pass through a hole and the outlet member is fixed to the outer surface of one of the flat walls so as to pass through a through hole on the exit side.

3) The heat transfer device according to 2) above, wherein the communication portion is formed by joining a hollow header member whose inside is a communication space to the end of the flat tube.

4) The heat transfer device according to 2) above, wherein the communication portion is formed by cutting a certain length portion near both ends of the partition wall of the flat pipe and closing both ends of the flat pipe with a closing member. ..

5) The first heat transfer medium flow body is a straight flat tubular body, and is arranged at intervals in the pipe width direction with the pipe longitudinal direction, the pipe width direction, and the pipe height direction facing the same direction. And the second flow pipe part and both flow pipe parts are integrally provided, and the ends of both flow pipe parts are integrally connected so that the flow directions of the heat transfer media in both flow pipe parts are opposite to each other. It consists of two substantially U-shaped tubular members consisting of a U-turn pipe portion, and the ends of both tubular members on the opposite side of the U-turn pipe portion in the first and second flow pipe portions are arranged so as to face each other. , The opening on the opposite side of the first flow pipe of both tubular members from the U-turn pipe is the inflow part, and the opening on the opposite side of the second flow pipe from the U-turn pipe is the outflow. The first flow tube portion of the tubular member constitutes the first straight line portion of the first flow path and the second flow path, and the second flow tube portion of both tubular members constitutes the second straight line portion of the first flow path and the second flow path. The portion is formed, and the turn portion of the first flow path and the second flow path is formed by the U-turn pipe portion of both tubular members, and the end of the first flow pipe portion of both tubular members opposite to the U-turn pipe portion. The heat transfer device according to 1) above, wherein the portion is joined to the inlet member and the end portion of the second pipe portion opposite to the U-turn pipe portion is joined to the outlet member.

6) A plurality of heat transfer medium flow bodies are arranged at intervals in the width direction of the first and second flow tube portions of the tubular member, and the first flow tube of the tubular member of all the heat transfer medium flow bodies. The end of the portion opposite to the U-turn tube is joined to one inlet member, and the end of the second tube of the tubular member of all heat transfer medium flow bodies is opposite to the U-turn tube. 5) The heat transfer device according to 5) above, which is joined to one outlet member.

According to the heat transfer devices 1) to 6) above, the first straight portion having an inflow portion at one end, the second straight portion having the same end as the inflow portion as an outflow portion, and the other ends of both straight portions are connected to each other. A substantially U-shaped first flow path having a turn portion to be passed through, a first straight portion having an inflow portion at one end, a second straight portion having the same end as the inflow portion as an outflow portion, and both straight portions. A heat transfer medium flow body having a substantially U-shaped second flow path having a turn portion through which the other ends are passed, and an inlet member provided in the heat transfer medium flow body so as to pass through the inflow portions of both flow paths. It is provided with an outlet member provided in the heat transfer medium flower so as to pass through the outflow portions of both flow paths, the heat transfer medium flow body has a certain length, and the turn portion of both flow paths is heat transfer. Since it is located at both ends in the longitudinal direction of the medium flower, the inlet member and the outlet member can be arranged at any position between the both ends in the longitudinal direction of the heat transfer medium flower. Therefore, the inflow pipe that inflows the heat transfer medium into the inlet member and the outflow pipe that causes the heat transfer medium to flow out from the outlet member are arranged in the middle part in the arrangement direction of the cells in the object to be cooled or heated, for example, the assembled battery. Even if it is necessary to do so, the pipe connection becomes easy, and it becomes possible to flexibly correspond to various pipe layouts.

Further, when an object is thermally brought into contact with at least one side surface of the heat transfer medium flower in the height direction, heat is transferred between the object and the heat transfer medium flowing in at least one of the flow paths. Will be done. Therefore, by passing a low-temperature heat transfer medium through the first flow path and the second flow path, it is possible to take heat from a plurality of high-temperature objects and cool the objects at the same time, and conversely, high-temperature transfer. By flowing a heat medium, it becomes possible to apply heat to a plurality of low-temperature objects and heat the objects at the same time.

According to the heat transfer device of 2) above, a substantially U-shape having a first straight line portion, a second straight line portion having the same end as the inflow portion as an outflow portion, and a turn portion through which the other ends of both straight portions are passed. The abbreviation having a first flow path, a first straight line portion having an inflow portion at one end, a second straight line portion having the same end as the inflow portion as an outflow portion, and a turn portion through which the other ends of both straight portions are passed. A heat transfer medium flow body provided with a U-shaped second flow path can be relatively easily formed.

According to the heat transfer devices of 3) and 4) above, the turn portions of both flow paths of the heat transfer medium flow body of 2) above can be formed relatively easily.

According to the heat transfer device of 5) above, the heat transfer medium flower is a straight flat tubular tube, and the pipe length direction, the pipe width direction, and the pipe height direction are oriented in the same direction in the pipe width direction. Both flow pipes are provided integrally with the first and second flow pipes arranged at intervals, and the flow directions of the heat transfer media in both flow pipes are opposite to each other. Since it consists of two substantially U-shaped tubular members consisting of a U-turn tube portion that integrally connects the ends of the portions, the heat transfer medium flower is made up of two tubular members made by bending one flat tube. It can be formed by using members, the number of parts can be reduced, and the manufacturing work becomes easy. For example, an example of a method for manufacturing a tubular member is described in Japanese Patent No. 5133771.

According to the heat transfer device of 6) above, a plurality of heat transfer medium flow bodies are arranged at intervals in the width direction of the first and second flow tube portions of the tubular member, and all the heat transfer medium flows. The end of the first flow tube portion of the tubular member of the body opposite to the U-turn tube portion is joined to one inlet member, and the U-turn of the second tube portion of the tubular member of all heat transfer medium flow bodies. Since the end opposite to the pipe portion is joined to one outlet member, the heat transfer medium flowing into the inlet member from the inflow pipe is the first flow path and the second flow of all the heat transfer medium flow bodies. After flowing through the road, it flows out to the outlet member and is made into an outflow pipe from the outlet member. Therefore, it becomes possible to apply cold heat or hot heat to many objects, for example, a battery pack at the same time.

It is a perspective view which shows the whole structure of the heat transfer apparatus by this invention. It is a horizontal cross-sectional view which omitted the partition wall between adjacent passages of each passage group which shows the heat transfer medium flow body of the heat transfer apparatus of FIG. FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. It is a partially enlarged vertical sectional view which shows the modification of the communication part of the heat transfer medium flow body used for the heat transfer apparatus of FIG. It is a perspective view which shows the whole structure of the other embodiment of the heat transfer apparatus by this invention. FIG. 5 is a partially cutaway plan view in which the partition wall between adjacent passages of each flow pipe portion showing the heat transfer medium flow body of the heat transfer device of FIG. 5 is omitted. FIG. 5 is a cross-sectional view showing a flow tube portion of one of the tubular members of the heat transfer medium flow body used in the heat transfer device of FIG. FIG. 5 is an enlarged plan view showing a part of a tubular member of a heat transfer medium flow body used in the heat transfer device of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, the heat transfer device according to the present invention is used to transfer cold heat or heat to an assembled battery composed of a plurality of rectangular parallelepiped rectangular parallelepiped cells.

In the following description, the term "aluminum" shall include aluminum alloys in addition to pure aluminum.

FIG. 1 shows the overall configuration of the heat transfer device according to the present invention, and FIGS. 2 and 3 show the configuration of a part thereof.

In FIGS. 1 to 3, the heat transfer device (1) is provided in the aluminum heat transfer medium flow body (2) and the heat transfer medium flow body (2), and the heat transfer medium is used as the heat transfer medium flow body (2). ), And an aluminum outlet member (4) provided in the heat transfer medium flower (2) and discharging the heat transfer medium from the heat transfer medium flower (2). The second heat transfer medium flower (2) has a first straight portion (7) having an inflow portion (7a) at one end and an outflow portion (8a) having the same end as the inflow portion (7a). A substantially U-shaped first flow path (5) having a turn portion (9) for passing the other ends of the straight portion (8) and both straight portions (7) (8), and one end having an inflow portion (11a). Pass the other ends of the first straight part (11), the second straight part (12) whose same end as the inflow part (11a) is the outflow part (12a), and both straight parts (11) (12). It has a substantially U-shaped second flow path (10) having a turn portion (13).

The heat transfer medium flow body (2) is a flat tube (17) made of an extruded aluminum profile, which is formed in parallel through a partition wall (14) (15) and has a plurality of passages (16) open at both ends. , It consists of a communication portion (18) provided at both ends of the flat tube (17) and through which the entire passage (16) is passed. In FIG. 2, the partition walls (14) (15) and the passage (16) are not shown.

The entire passage (16) of the flat tube (17) forming the heat transfer medium flower (2) is divided into two passage groups (19) (20) consisting of a plurality of continuously arranged passages (16). Both passage groups (19) and (20) are communicated with each other via a communication portion (18) at both ends in the longitudinal direction of the heat transfer medium flower (2). Each passage group (19) (20) is provided in approximately half of the width direction of the flat pipe (17), and the wall thickness of the partition wall (15) between the two passage groups (19) (20) is , It is thicker than the wall thickness of the partition wall (14) between two adjacent passages (16) in each passage group (19) (20). One passage in one of the two flat walls (21) (22) facing in the thickness direction of the flat tube (17), in the middle of the longitudinal direction in the upper flat wall (21). An entry-side through hole (23) leading to all passages (16) of the group (19) and an exit-side through hole (24) leading to all passages (16) of the other passage group (20) are formed.

The communication portion (18) of the heat transfer medium flower (2) is a communication space (25a) whose inside is connected to all passages (16) of both passage groups (19) and (20) at the end of the flat tube (17). It is formed by joining the hollow header member (25) that has become.

Then, the first straight line portion (7) (11) of the first flow path (5) and the second flow path (10) is provided by one of the passage groups (19) leading to the entry-side through hole (23) of the flat tube (17). ) Is configured, and the portion of both first straight portions (7) (11) facing the entry-side through hole (23) is the inflow portion (7a) (11a). The second straight line portion (8) (12) of the first flow path (5) and the second flow path (10) is formed by the other passage group (20) leading to the exit side through hole (24) of the flat pipe (17). In addition to being configured, the portion of both second straight portions (8) (12) facing the exit side through hole (24) is the outflow portion (8a) (12a). Further, the turn portion (9) of the first flow path (5) is formed by one communication portion (18) that allows the two passage groups (19) and (20) to pass through each other, and the other communication portion (18) constitutes the turn portion (9). The turn portion (13) of the second flow path (10) is configured.

The inlet member (3) is fixed to the outer surface of the upper flat wall (21) by joining, for example, with a brazing material so as to pass through the side through hole (23), and the exit member (4) is attached to the upper flat wall (21). It is fixed to the outer surface by joining with a brazing material, for example, so as to lead to the through hole (24) on the exit side. The entrance member (3) is integrally provided in the header portion (3a) and the header portion (3a) leading to all the passages (16) of one passage group (19) via the entry-side through hole (23). It consists of a short tube (3b). The outlet member (4) is integrally provided in the header portion (4a) and the header portion (4a) leading to all the passages (16) of the other passage group (20) via the exit side through hole (24). It consists of a short tube (4b).

Although not shown, a plurality of heat transfer medium flow bodies (2) are arranged at intervals in the width direction of the flat tube (17), and all the inlet members (3) are attached to the inlet member (3). It may be connected to an inflow pipe through which the heat transfer medium flows, and all outlet members (4) may be connected to an outflow pipe through which the heat transfer medium flows out from the outlet member.

The above-mentioned heat transfer device (1) is used, for example, to simultaneously cool a plurality of assembled batteries (27) composed of flat square cell cells (26) of a plurality of square lithium ion secondary batteries as follows. ..

That is, the assembled battery (27) has a communication portion (2) rather than the inlet member (3) and the outlet member (4) on the upper surface of the flat tube (17) of the heat transfer medium flower (2) of the heat transfer device (1). It is arranged in the portion on the 18) side so as to straddle the two straight portions (7) (8) of the first flow path (5) and the two straight portions (11) (12) of the second flow path (10), respectively. .. Although not shown, an electrical insulating member is interposed between the assembled battery (27) and the flat tube (17).

In this state, when the cooling liquid, which is a heat transfer medium, is supplied to the inlet member (3), the cooling liquid passes through both flow paths (5) and (10) of the heat transfer medium flower (2) in the first straight portion ( After flowing in the order of 7) (11), turn part (9) (13) and second straight part (8) (12), it is discharged through the outlet member (4), and the coolant is discharged through the heat transfer medium flower. All the cells (26) of the assembled battery (27) are cooled while flowing through (2). Therefore, it is suppressed that a large temperature difference occurs between all the cells (16) of the assembled battery (27).

When it is necessary to heat the cell (26) to an appropriate temperature before starting use in a cold region, a high-temperature heating liquid which is a heat transfer medium capable of supplying heat is supplied to the inlet member (3). Then, the heating liquid flows through both flow paths (5) and (10) of the heat transfer medium flower (2) in the first straight portion (7) (11), the turn portion (9) (13) and the second straight portion. (8) After flowing in the order of (12), it is discharged through the outlet member (4), and while the heating liquid flows through the heat transfer medium flower (2), all the cells of the assembled battery (27) ( 26) is heated to the proper temperature.

FIG. 4 shows a modified example of the communication portions provided at both ends of the flat tube (17) of the heat transfer medium flower (2).

The communication portion (30) shown in FIG. 4 is formed by excising a fixed length portion of the flat tube (17) near both ends in the longitudinal direction in the entire partition wall (14) (15) of the flat tube (17). It is formed by closing the openings at both ends of 17) with a flat plate-shaped aluminum closing member (31).

5 to 8 show another embodiment of the heat transfer device according to the present invention.

FIG. 5 shows the overall configuration of the heat transfer device according to the present invention, and FIGS. 6 to 8 show the configuration of a part thereof.

In FIGS. 5 to 8, the heat transfer device (40) is provided in the aluminum heat transfer medium flow body (41) and the heat transfer medium flow body (41), and the heat transfer medium is used as the heat transfer medium flow body (41). ), And an aluminum outlet member (43) provided on the heat transfer medium flower (41) and discharging the heat transfer medium from the heat transfer medium flower (41). The second heat transfer medium flower (41) has a first straight portion (45) having an inflow portion (45a) at one end and an outflow portion (46a) having the same end as the inflow portion (45a). A substantially U-shaped first flow path (44) having a turn portion (47) for passing the other ends of the straight portion (46) and both straight portions (45) (46), and one end having an inflow portion (49a). Pass the other ends of the first straight portion (49), the second straight portion (50) whose end is the same as the inflow portion (49a) and the outflow portion (50a), and both straight portions (49) (50). It has a substantially U-shaped second flow path (48) having a turn portion (51).

The heat transfer medium flower (41) is a straight flat tubular body, and is arranged at intervals in the pipe width direction with the pipe longitudinal direction, the pipe width direction, and the pipe height direction facing the same direction. Flow of heat transfer medium in both flow pipes (53) (54), which are integrally provided in the first and second flow pipes (53) (54) and both flow pipes (53) (54). It consists of two substantially U-shaped tubular members (52) consisting of a U-turn pipe (55) that integrally connects the ends of both flow pipes (53) (54) so that the directions are opposite to each other. , The ends of both tubular members (52) on the opposite side of the U-turn pipe portion (55) in the first and second flow pipe portions (53) (54) are arranged so as to face each other.

A plurality of passages (56) are provided in the first and second flow pipe portions (53) (54) and U-turn pipe portions (55) of each tubular member (52) in the width direction through a partition wall (57). It is formed side by side. In FIG. 6, the passage (56) and the partition wall (57) are not shown. All heat transfer medium distributors (41) are spaced in the tube width direction of the first and second flow pipes (53) (54) and the first and second flow pipes (53) (54). Are arranged in an alternately arranged state.

Both tubular members (52) are formed by bending a straight flat pipe made of extruded aluminum profile, and the first and second flow pipe portions (53) (54) have both side surfaces in the pipe thickness direction. It is located in the same plane. Further, the U-turn pipe portion (55) is composed of a flat connecting portion that integrally connects the inclined end edges of the first and second flow pipe portions (53) and (54).

The inside of the first flow tube portion (53) of both tubular members (52) of the heat transfer medium flow body (41) is the first straight line portion (45) of the first flow path (44) and the second flow path (48). 49), the opening of the first distribution pipe (53) opposite to the U-turn pipe (55) becomes the inflow part (45a) (49a), and the inside of the second distribution pipe (54) is the second. It becomes the second straight line portion (46) (50) of the first flow path (44) and the second flow path (48), and is on the opposite side of the U-turn pipe portion (55) of the second flow pipe portion (54). The opening is the outflow part (46a) (50a). Further, the inside of the U-turn pipe portion (55) of both tubular members (52) is the turn portion (47) (51) of the first flow path (44) and the second flow path (48).

The ends of the first flow tube portion (53) on the inflow portion (45a) (49a) side of both tubular members (52) of the heat transfer medium flower (41) are connected to one tubular inlet member (42). , The end of the second flow pipe portion (54) on the outflow portion (46a) (50a) side is connected to one tubular outlet member (43). The inlet member (42) and the outlet member (43) have their longitudinal directions oriented in a direction orthogonal to the longitudinal direction of the first and second flow pipe portions (53) (54) of both tubular members (52), and either of them. One member, here the outlet member (43), is arranged so as to be located above, and is located above the first and second flow pipe portions (53) (54) of both tubular members (52). The second flow pipe portion (54) connected to the outlet member (43) is bent diagonally upward in the vicinity of the outlet member (43) side end portion. The first and second flow pipe portions (53) (54) of all heat transfer medium flow units (41) have the pipe height direction oriented in the vertical direction, and the pipe height direction of both flow pipe portions (53) (54). The upper surface and the lower surface (both sides in the pipe thickness direction) are located on the same horizontal plane.

The above-mentioned heat transfer device (40) is used, for example, to simultaneously cool a plurality of assembled batteries (27) composed of flat square cell cells (26) of a plurality of square lithium ion secondary batteries as follows. ..

That is, the assembled battery (27) has both distribution pipe portions (53) of each tubular member (52) on the upper surface of each tubular member (52) of all the heat transfer medium flow bodies (41) of the heat transfer device (40). ) (54). Although not shown, an electrical insulating member is interposed between the assembled battery (27) and both distribution pipes (53) (54).

In this state, when the cooling liquid, which is a heat transfer medium, is supplied to the inlet member (42), the cooling liquid passes through both flow paths (44) (48) of the heat transfer medium flower (41) in the first straight line portion ( After flowing in the order of 45) (49), turn portion (47) (51) and second straight portion (46) (50), it is discharged through the outlet member (43), and the coolant is discharged through the heat transfer medium flower. All cells (26) of the assembled battery (27) are cooled while flowing through (41). Therefore, it is suppressed that a large temperature difference occurs between all the cells (26 ) of the assembled battery (27).

When it is necessary to heat the cell (26) to an appropriate temperature before starting use in a cold region, a high-temperature heating liquid which is a heat transfer medium capable of supplying heat is supplied to the inlet member (42). Then, the heating liquid flows through both flow paths (44) and (48) of the heat transfer medium flower (41) in the first straight portion (45) (49), the turn portion (47) (51) and the second straight portion. (46) After flowing in the order of (50), it is discharged through the outlet member (43), and all the cells (27) of the assembled battery (27) while the heating liquid flows in the heat transfer medium flower (41). 26) is heated to the proper temperature.

The heat transfer device according to the present invention is used, for example, in an electric vehicle provided with an assembled battery composed of a cell of a plurality of Li ion secondary batteries, for cooling the cell and heating it to an appropriate temperature.

(1) (40): Heat transfer device
(2) (41): Heat transfer medium distributor
(3) (42): Entrance member
(4) (43): Exit member
(5) (44): First flow path
(7) (11) (45) (49): First straight line part
(7a) (11a) (45a) (49a): Inflow section
(8) (12) (46) (50): 2nd straight line part
(8a) (12a) (46a) (50a): Outflow
(9) (13) (47) (51): Turn part
(10) (48): Second flow path
(14) (15): Partition wall
(16): Passage
(17): Flat tube
(18) (30): Communication section
(19) (20): Passage group
(21) (22): Flat wall
(23): Through hole on the entry side
(24): Outlet side through hole
(25): Header member
(25a): Communication space
(31): Closing member
(52): Tubular member
(53): 1st distribution pipe section
(54): Second distribution pipe
(55): U-turn tube

Claims (4)

A substantially U-shaped first stream having a first straight portion having an inflow portion at one end, a second straight portion having the same end as the inflow portion as an outflow portion, and a turn portion for passing the other ends of both straight portions. A substantially U-shape having a path, a first straight portion having an inflow portion at one end, a second straight portion having the same end as the inflow portion as an outflow portion, and a turn portion for passing the other ends of both straight portions. A heat transfer medium flow body having a second flow path, an inlet member provided in the heat transfer medium flow body so as to communicate with the inflow portion of both flow paths, and a heat transfer medium flow so as to communicate with the outflow portion of both flow paths. and an outlet member provided in the body, together with the heat transfer medium flow body has a constant length, the turn portions of both flow paths is located at the both ends in the longitudinal direction of the heat transfer medium flow body ,
The heat transfer medium flow body communicates with a flat pipe made of an extruded aluminum profile, which is formed in parallel through a partition wall and has a plurality of passages open at both ends, and a flat pipe provided at both ends of the flat pipe and passed through all the passages. The entire passage of the flat pipe is divided into two passage groups consisting of a plurality of consecutive passages, and one of the two flat walls facing in the thickness direction of the flat pipe is a flat wall. In the middle part in the longitudinal direction in the above, an entry-side through hole leading to all passages of one passage group and an exit-side through hole leading to all passages of the other passage group are formed, and one passage leading to the entry-side through hole is formed. The group constitutes the first straight part of the first flow path and the second flow path, and the other passage group leading to the exit side through hole constitutes the second straight part of the first flow path and the second flow path. The turn portion of the first flow path is formed by the communication portion of the above, and the turn portion of the second flow path is formed by the other communication portion. A heat transfer device fixed so as to be able to pass through, and the outlet member is fixed to the outer surface of the one flat wall so as to be able to pass through the exit side through hole. The communication unit, the heat transfer device of the flat tube end inside communicating Spoken space and became hollow header member according to claim 1 which is formed by bonding to the. The communication unit, as well as cut the predetermined length portion near both ends of the partition walls of the flat tube, the heat transfer device of claim 1, wherein is formed by closing the closure member to both open ends of the flat tubes. A substantially U-shaped first stream having a first straight portion having an inflow portion at one end, a second straight portion having the same end as the inflow portion as an outflow portion, and a turn portion for passing the other ends of both straight portions. A substantially U-shape having a path, a first straight portion having an inflow portion at one end, a second straight portion having the same end as the inflow portion as an outflow portion, and a turn portion for passing the other ends of both straight portions. A heat transfer medium flow body having a second flow path, an inlet member provided in the heat transfer medium flow body so as to communicate with the inflow portion of both flow paths, and a heat transfer medium flow so as to communicate with the outflow portion of both flow paths. and an outlet member provided in the body, together with the heat transfer medium flow body has a constant length, the turn portions of both flow paths is located at the both ends in the longitudinal direction of the heat transfer medium flow body ,
The first and first heat transfer medium flow bodies are arranged in a straight flat tubular shape at intervals in the pipe width direction with the pipe longitudinal direction, the pipe width direction and the pipe height direction facing the same direction, respectively. 2 A U that is integrally provided in both flow pipes and both flow pipes and that integrally connects the ends of both flow pipes so that the flow directions of the heat transfer media in both flow pipes are opposite to each other. It consists of two substantially U-shaped tubular members consisting of a turn tube portion, and the ends of both tubular members on the opposite side of the U-turn tube portion in the first and second flow tube portions are arranged so as to face each other. The opening of the first flow pipe portion of the tubular member on the opposite side of the U-turn pipe portion becomes the inflow portion, and the opening of the second flow pipe portion on the opposite side of the U-turn pipe portion serves as the outflow portion. The first straight flow section of the first flow path and the second flow path is configured by the first flow tube section of the above, and the second straight line portion of the first flow path and the second flow path is formed by the second flow tube section of both tubular members. The U-turn pipes of both tubular members form the turn portions of the first flow path and the second flow path, and the ends of the first flow pipes of both tubular members on the opposite side of the U-turn pipes are formed. It is joined to the inlet member, and the end of the second flow pipe portion on the opposite side of the U-turn pipe portion is joined to the outlet member.
A plurality of heat transfer medium flow bodies are arranged so as to be spaced apart from each other in the width direction of the first and second flow pipe portions of the tubular member and in a state where the first and second flow pipe portions are alternately arranged. The end of the first flow tube portion of the tubular member of the heat transfer medium flow body, which is opposite to the U-turn tube portion, is joined to one inlet member, and the second passage of the tubular member of all the heat transfer medium flow bodies. A heat transfer device in which the end of the pipe portion opposite to the U-turn pipe portion is joined to one outlet member.

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