CN203719498U

CN203719498U - Flat heat exchange tube

Info

Publication number: CN203719498U
Application number: CN201420041459.1U
Authority: CN
Inventors: 贝村哲; 龟田诚; 花房达也
Original assignee: Keihin Thermal Technology Corp
Current assignee: Mahle Behr Thermal Systems Japan Ltd
Priority date: 2013-02-04
Filing date: 2014-01-22
Publication date: 2014-07-16
Anticipated expiration: 2024-01-22
Also published as: JP2014149137A

Abstract

The utility model provides a flat heat exchange tube, poor soldering of which is inhibited by simple processing. The flat heat exchange tube (4) comprises a pair of flat walls (13 and 14), two sidewalls (15), reinforcing members (16), and a partition member (18) which is wavy. The reinforcing members (16) are arranged on the inner sides of the sidewalls (15). Inner space is divided by the partition member (18) into a plurality of refrigerant passages (17) extending in the length-wise direction of the tube. The partition member (18) is provided with a plurality of partition walls (22) which extend in the length-wise direction of the tube, which are arranged side by side in the width-wise direction of the tube and which divide the adjacent refrigerant passages (17). One height-wise end of each reinforcing member (16) is connected to the height-wise direction end of the corresponding partition wall (22) at the reinforcing member end of the partition member (18). The height-wise other end of each reinforcing member (16) is integrally provided with an extension part (24) which extends towards the sidewall (15) opposite to the sidewall (15) having the reinforcing members (16), and the front ends of the extension parts (24) are abutted to the partition walls (22) at the reinforcing member end of the partition member (18).

Description

Flat heat exchange tubes

Technical field

The utility model relates to the flat heat exchange tubes using in the outdoor heat converter, indoor heat converter of condenser, evaporimeter, the thermal pump formula kind of refrigeration cycle of the kind of refrigeration cycle that for example forms air conditioning for automobiles.

Background technology

As the flat heat exchange tubes for example using in the condenser of kind of refrigeration cycle that forms air conditioning for automobiles, use following heat-exchange tube, the edge, both sides that there is mutually relative a pair of flat wall and be located at two flat wall two sidewalls each other, taking the breakage that prevents the sidewall causing because of slungshot etc. as object, in the inner side of two side, strengthening part is set respectively.

As the breakage to prevent the sidewall that slungshot etc. causes as object, a concrete example of the flat heat exchange tubes of strengthening part is set respectively in the inner side of two side, known a kind of flat heat exchange tubes, there is relative a pair of flat wall mutually, the edge, both sides that is located at two flat wall two sidewalls each other, inner space is separated into the wavy partition member of multiple refrigerant passage of extending along pipe range direction, two flat wall respectively entirety form, two side is the flat condition of extending along the high direction of pipe, between a lateral margin of flat wall of a side and a lateral margin of the flat wall of opposite side, be provided with integratedly the sidewall of a side, be provided with integratedly the sidewall of opposite side at another lateral margin of the flat wall of a described side, and be provided with integratedly the strengthening part of the flat condition of extending along pipe short transverse at the lateral margin of the side wall side of the described opposite side of the flat wall of described opposite side, partition member is connected with the front end of described strengthening part and forms in the mode of stretching out to the side wall side of a described side, and, the lateral margin of the side wall side of the described side in partition member is provided with the strengthening part of the flat condition of extending along pipe short transverse integratedly, the mode that two side and two strengthening parts are close to lamination shape overlap by soldering, partition member is wavy, extend and be arranged side by side on pipe width along length of tube direction, and multiple partition walls each other of the refrigerant passage with separating adjacent and link adjacent partition wall each other and be engaged in the linking part of two flat wall inner surfaces, the one-sided linking part of the pipe short transverse of partition member by soldering in the flat wall of a described side, and similarly the linking part of opposite side by soldering in the flat wall of described opposite side (with reference to patent documentation 1).

And, by be spaced from each other interval and make the width frontage and airiness direction ground flat heat exchange tubes that the patent documentation 1 of shape configuration is recorded side by side, both ends that soldering has heat-exchange tube catch box (header tank), be configured in adjacent heat-exchange tube each other and the outer fin on heat-exchange tube forms heat exchanger by soldering.

Above-mentioned heat exchanger is manufactured by following method., by the two side in flat heat exchange tubes and two strengthening parts, the linking part of two flat wall and partition member is not combined by the warpage body of the state of soldering and outer fin, and, the both ends of warpage body are inserted into after the pipe patchhole of the case constituting body that forms two catch boxs, two side to warpage body and two strengthening parts respectively, and thereby two linking parts of two flat wall and partition member carry out soldering manufacture heat-exchange tube, with its side by side, heat-exchange tube and outer fin and heat-exchange tube and catch box constituting body are carried out soldering and manufacture thus heat exchanger.

But, in the time that the heat exchanger with the flat heat exchange tubes that patent documentation 1 records is manufactured, while processing under the state of above-mentioned warpage body, warpage cognition deforms, and between the two side in warpage body and two strengthening parts, produce gap, likely between two side and two strengthening parts, soldering occurs when the soldering of operation in the back bad.

In addition, as the breakage to prevent the sidewall that slungshot etc. causes as object, be respectively equipped with other concrete example of the flat heat exchange tubes of strengthening part in the inner side of two side, known a kind of flat heat exchange tubes, there is relative a pair of flat wall mutually, the edge, both sides that is located at two flat wall two sidewalls each other, inner space is separated into the wavy partition member of multiple refrigerant passage of extending along length of tube direction, two flat wall are integrally integrally formed respectively, two side is that the central portion of pipe short transverse is to the outstanding cross circular section arcuation of pipe width foreign side, between a lateral margin of flat wall of a side and a lateral margin of the flat wall of opposite side, be provided with integratedly the sidewall of a side, be provided with integratedly the sidewall of opposite side at another lateral margin of the flat wall of a described side, and the lateral margin in the side wall side of the described opposite side of the flat wall of described opposite side is provided with the central portion of pipe short transverse integratedly to the strengthening part of the outstanding cross circular section arcuation of pipe width foreign side, partition member is connected with the front end of described strengthening part and is integrally formed in the mode of stretching out to the side wall side of a described side, and the lateral margin of the side wall side of the described side in partition member is provided with the central portion of pipe short transverse integratedly to the strengthening part of the outstanding cross circular section arcuation of pipe width foreign side, the mode that two side and two strengthening parts are close to lamination shape overlap by soldering, partition member is wavy, have along length of tube direction and extend and be arranged side by side on pipe width, and the refrigerant passage of separating adjacent multiple partition walls each other, link adjacent partition wall each other and be engaged in the linking part of two flat wall inner surfaces, the linking part of partition member in two flat wall by soldering (with reference to patent documentation 2).

According to the flat heat exchange tubes described in patent documentation 2, the problem having for the flat heat exchange tubes not occurring described in patent documentation 1, in the time manufacturing warpage body, need to, with high dimensional accuracy be shaped two side and two strengthening parts, there is the problem of processing operation trouble.

Patent documentation 1: TOHKEMY 2009-168360 communique

Patent documentation 2: TOHKEMY 2009-229052 communique

Utility model content

The purpose of this utility model is to provide a kind of flat heat exchange tubes that addresses the above problem and can suppress the bad generation of soldering by simple processing operation.

The utility model, comprises following mode to achieve these goals.

1) flat heat exchange tubes, has: relative a pair of flat wall mutually; The edge, both sides that is located at two flat wall two sidewalls each other; Be located at the strengthening part of the inner side of the sidewall of at least one party of two side; Inner space is separated into the wavy partition member of multiple refrigerant passage extending along length of tube direction, partition member has along length of tube direction and extends and on pipe width, be arranged side by side and the refrigerant passage of separating adjacent multiple partition walls each other; Adjacent partition wall is alternately linked and is engaged in each other to the linking part of two flat wall inner surfaces at the two ends place of pipe short transverse,

One end of the pipe short transverse of strengthening part is connected with an end of the pipe short transverse of the partition wall of the strengthening part side end in partition member, on the other end of the pipe short transverse of strengthening part, be provided with integratedly to be provided with strengthening part sidewall opposition side side wall side extend extension, the partition wall butt of the strengthening part side end in leading section and the partition member of extension.

2) as above-mentioned 1) as described in flat heat exchange tubes, strengthening part covers the inner surface of sidewall, and at least a portion of extension covers a part for the inner surface of the flat wall of a side.

3) as above-mentioned 2) as described in flat heat exchange tubes, the entirety of extension covers a part for the inner surface of the flat wall of a described side.

4) as above-mentioned 2) as described in flat heat exchange tubes, part at the forward end of extension is provided with to the bend of the central portion lateral bend of pipe short transverse, the partition wall butt of the strengthening part side end in leading section and the partition member of bend, and the entirety of the part except bend in extension covers a part for the inner surface of the flat wall of a described side.

5) as above-mentioned 2)～4) any one as described in flat heat exchange tubes, between strengthening part and the partition wall of partition member, be provided with the covering part of inner surface of the flat wall that covers opposite side.

6) as above-mentioned 1)～5) any one as described in flat heat exchange tubes, be integrally formed the entirety of the flat wall of a side, and the flat wall of opposite side is by forming along pipe width two partition walls side by side, outside pipe width in edge, both sides and two partition walls of the flat wall of a described side, between edge, be respectively equipped with sidewall, inner side in two side is provided with strengthening part, pipe width medial margin portion in two partition walls is formed with respectively outstanding wall, described outstanding wall is side-prominent to the flat wall of a described side and be engaged in this flat wall with the state of the flat wall butt of front end and a described side respectively, and two outstanding walls are engaged mutually, partition member is integrally formed in the mode being connected with the front end of two outstanding walls and stretch out to pipe width outside, outside pipe width in partition member, edge is formed with strengthening part.

7) heat exchanger, has and is spaced from each other interval and makes the multiple flat heat exchange tubes of width frontage and airiness direction with the configuration of shape side by side; Be connected with the catch box at the both ends of heat-exchange tube; Be configured in adjacent heat-exchange tube fin each other, heat-exchange tube is above-mentioned 1)～6) any one described in flat heat exchange tubes.

8) manufacture method for flat heat exchange tubes, this flat heat exchange tubes, has: relative a pair of flat wall mutually; The edge, both sides that is located at two flat wall two sidewalls each other; Be located at the inner side of sidewall and the strengthening part of covering side wall inner surfaces of at least one party of two side; Inner space is separated into the wavy partition member of multiple refrigerant passage of extending along length of tube direction,

Be integrally formed the entirety of the flat wall of a side, and the flat wall of opposite side is by forming along pipe width two partition walls side by side, outside pipe width in edge, both sides and two partition walls of the flat wall of a described side, between edge, be respectively equipped with sidewall, inner side in two side is provided with strengthening part, pipe width medial margin portion in two partition walls is formed with respectively outstanding wall, described outstanding wall is side-prominent to the flat wall of a described side and be engaged in this flat wall with the state of the flat wall butt of front end and a described side respectively, and two outstanding walls are engaged mutually, partition member is integrally formed in the mode being connected with the front end of two outstanding walls and stretch out to pipe width outside, partition member has along the extension of length of tube direction and is arranged side by side on pipe width, and the refrigerant passage of separating adjacent multiple partition walls each other, adjacent partition wall is alternately linked and is engaged in each other to the linking part of two flat wall inner surfaces at the two ends place of pipe short transverse,

One end of the pipe short transverse of strengthening part is connected with an end of the pipe short transverse of the partition wall of the strengthening part side end in partition member, on the other end of the pipe short transverse of strengthening part, be provided with integratedly to be provided with strengthening part sidewall opposition side side wall side extend extension, the entirety of extension covers a part for the inner surface of the flat wall of a side, and the partition wall butt of the strengthening part side end in leading section and the partition member of extension, it is characterized in that, comprise the following steps:

Prepare a raw metal plate, described raw metal plate has: a flat wall forming portion that forms the flat wall of a described side, be located at the both side edges of flat wall forming portion and two sidewall forming portions of formation sidewall, be located in the forming portion of two side and lateral margin flat wall forming portion opposition side and form two partition wall forming portions of the partition wall of the flat wall of described opposite side, be located at two outstanding wall forming portions in two partition wall forming portions and lateral margin sidewall forming portion opposition side and the outstanding wall of formation, be located at two partition member forming portions in two outstanding wall forming portions and lateral margin partition wall forming portion opposition side and formation partition member, be located at two strengthening part forming portions in two partition member forming portions and lateral margin outstanding wall forming portion opposition side and formation strengthening part, and be located in two strengthening part forming portions and lateral margin partition member forming portion opposition side and form the extension forming portion of extension, set in advance multiple partition walls and link adjacent partition wall linking part each other in the partition member forming portion of raw metal plate, by the strengthening part forming portion of raw metal plate with respect to the partition wall of the end of partition member forming portion bending and by extension forming portion with respect to the bending of strengthening part forming portion, thus, form strengthening part and extension, and, make the partition wall butt of the strengthening part side end in leading section and the partition member of extension, follow the partition member forming portion of raw metal plate with respect to outstanding wall forming portion bending, and will give prominence to wall forming portion with respect to the bending of partition wall forming portion, make thus one-sided linking part and the partition wall forming portion butt of partition member forming portion, then partition wall forming portion is bending and make sidewall forming portion with respect to the bending of flat wall forming portion with respect to sidewall forming portion, make thus linking part and the flat wall forming portion butt of the opposite side of partition member forming portion, and make two outstanding wall forming portion face contacts each other, thus, manufacture comprises the flat wall of a side, the flat wall of the opposite side being formed by two partition walls, two side, two outstanding walls, partition member, the warpage body of strengthening part and extension, then, to two outstanding walls each other, the linking part of partition member and two flat wall, strengthening part and two side, the flat wall of extension and a side, and the partition wall of the strengthening part side end of the leading section of extension and partition member carries out soldering.

9) manufacture method for flat heat exchange tubes, this flat heat exchange tubes, has: relative a pair of flat wall mutually; The edge, both sides that is located at two flat wall two sidewalls each other; Be located at the inner side of sidewall and the strengthening part of covering side wall inner surfaces of at least one party of two side; Inner space is separated into the wavy partition member of multiple refrigerant passage of extending along length of tube direction,

One end of the pipe short transverse of strengthening part is connected with an end of the pipe short transverse of the partition wall of the strengthening part side end in partition member, on the other end of the pipe short transverse of strengthening part, be provided with integratedly to be provided with strengthening part sidewall opposition side side wall side extend extension, the part of the forward end of extension is provided with to the bend of the central portion lateral bend of pipe short transverse, the partition wall butt of the strengthening part side end in leading section and the partition member of bend, and the entirety of the part except bend in extension covers a part for the inner surface of the flat wall of a side, it is characterized in that, comprise the following steps:

Prepare a raw metal plate, described raw metal plate has: a flat wall forming portion that forms the flat wall of a described side, be located at the both side edges of flat wall forming portion and two sidewall forming portions of formation sidewall, be located in the forming portion of two side and lateral margin flat wall forming portion opposition side and form two partition wall forming portions of the partition wall of the flat wall of described opposite side, be located at two outstanding wall forming portions in two partition wall forming portions and lateral margin sidewall forming portion opposition side and the outstanding wall of formation, be located at two partition member forming portions in two outstanding wall forming portions and lateral margin partition wall forming portion opposition side and formation partition member, be located at two strengthening part forming portions in two partition member forming portions and lateral margin outstanding wall forming portion opposition side and formation strengthening part, and be located in two strengthening part forming portions and lateral margin partition member forming portion opposition side and form the extension forming portion of extension, set in advance multiple partition walls and link adjacent partition wall linking part each other in the partition member forming portion of raw metal plate, by the strengthening part forming portion of raw metal plate with respect to the partition wall of the end of partition member forming portion bending and by extension forming portion with respect to the bending of strengthening part forming portion, and by the part bending of the forward end of extension, thus, form strengthening part and there is the extension of bend, and, by making the partition wall butt of the strengthening part side end in leading section and the partition member of bend of extension, form the size of thickness direction of raw metal plate at the both ends of raw metal plate than the large cylindrical portion in interval between the inner surface of two flat wall of the flat heat exchange tubes that should manufacture, follow the partition member forming portion of raw metal plate with respect to outstanding wall forming portion bending, and will give prominence to wall forming portion with respect to the bending of partition wall forming portion, make thus one-sided linking part and the partition wall forming portion butt of partition member forming portion, then partition wall forming portion is bending and make sidewall forming portion with respect to the bending of flat wall forming portion with respect to sidewall forming portion, make thus linking part and the flat wall forming portion butt of the opposite side of partition member forming portion, and make two outstanding wall forming portion face contacts each other, and then by making cylindrical portion distortion, manufacture the flat wall that comprises a side, the flat wall of the opposite side being formed by two partition walls, two side, two outstanding walls, partition member, strengthening part and there is the warpage body of the extension of bend, then, to two outstanding walls each other, the linking part of partition member and two flat wall, strengthening part and two side, the flat wall of extension and a side, and the partition wall of the strengthening part side end of the leading section of the bend of extension and partition member carries out soldering.

The effect of utility model

By above-mentioned 1)～6) flat heat exchange tubes, the edge, both sides that is located at mutually relative a pair of flat wall is connected with an end of the pipe short transverse of the partition wall of the strengthening part side end in partition member an end of the pipe short transverse of the strengthening part of the inner side of the sidewall of at least one party of two set sidewalls each other, be provided with integratedly in the other end of the pipe short transverse of strengthening part to the extension extending with the side wall side of sidewall opposition side that is provided with strengthening part, the partition wall butt of the strengthening part side end in leading section and the partition member of extension, so in the time manufacturing flat heat exchange tubes, form at warpage raw metal plate and the state of the warpage body of each several part before by soldering under, the partition wall of extension and partition member against, strengthening part is urged in side wall side thus.Therefore, processing when described warpage body, by being applied to the external force on this warpage body, strengthening part is from the inner surface isolation of sidewall, and oppose side wall and strengthening part carry out soldering reliably when the soldering of operation in the back.In addition, the only partition wall butt of the leading section of extension and partition member, so with the heat-exchange tube of being recorded as patent documentation 2, the situation that the entirety of the inner surface of sidewall and the outer surface of strengthening part is close to is compared, and shaping soldering needs the operation of the warpage body of the state before part to become simple.

According to above-mentioned 2)～4) flat heat exchange tubes, due to the inner surface of strengthening part covering sidewall, and at least a portion of extension covers a part for the inner surface of the flat wall of a side, so, the intensity that inner surface is reinforced the part that the inner surface portion of being extended in intensity and the flat wall of sidewall that parts cover covers improves, and the part that these intensity improve can prevent the breakage that the flying of slungshot etc. causes.

According to above-mentioned 5) flat heat exchange tubes, between strengthening part and the partition wall of partition member, be provided with the covering part of the inner surface of the flat wall that covers opposite side, therefore, the intensity of the part that inner surface coating cap in the flat wall of opposite side covers improves, and the part that this intensity improves can prevent the breakage that the flying of slungshot etc. causes.

According to above-mentioned 6) flat heat exchange tubes, form at warpage raw metal plate and the state of the warpage body of each several part before by soldering under, the partition wall of extension and partition member against, and partition member and outstanding wall against, two strengthening parts are pushed to sidewall effectively thus.

According to above-mentioned 8) and 9) the manufacture method of flat heat exchange tubes, under the state of the warpage body before each several part is by soldering, extension to the partition wall of partition member against, and partition member to outstanding wall against, two strengthening parts are pressed to two side thruster.Therefore, processing when described warpage body, by being applied to the external force on this warpage body, strengthening part separates from the inner surface of sidewall, in the back when the soldering of operation sidewall and strengthening part by soldering reliably.In addition, be only the leading section of extension and the partition wall butt of partition member, so such with the heat-exchange tube that patent documentation 2 is recorded, the situation that the entirety of the inner surface of sidewall and the outer surface of strengthening part is close to is compared, and the operation that needs the warpage body of the state before part soldering to form is become to simple.

Brief description of the drawings

Fig. 1 is the stereogram that represents the entirety formation of the condenser used for automobile air conditioning with flat heat exchange tubes of the present utility model.

Fig. 2 is the A-A line amplification view of Fig. 1.

Fig. 3 is the partial enlarged drawing of Fig. 2.

Fig. 4 is the figure that represents the operation of a part for the method for the flat heat exchange tubes shown in shop drawings 2 and Fig. 3.

Fig. 5 represents that other embodiment of flat heat exchange tubes of the present utility model is equivalent to the figure of Fig. 3.

Fig. 6 is the figure that represents the operation of a part for the method for the flat heat exchange tubes shown in shop drawings 5.

The explanation of Reference numeral

1: condenser (heat exchanger)

2,3: catch box

4,50: flat heat exchange tubes

5: outer fin

13,14: flat wall

15: sidewall

16: strengthening part

17: refrigerant passage

18: partition member

19: partition wall

21: outstanding wall

22: partition wall

23: linking part

24: extension

25: covering part

30: raw metal plate

31: flat wall forming portion

32: sidewall forming portion

33: partition wall forming portion

34: outstanding wall forming portion

35: partition member forming portion

37: strengthening part forming portion

38: extension forming portion

40,55: warpage body

51: bend

52: cylindrical portion

Detailed description of the invention

Below, with reference to the accompanying drawings of embodiment of the present utility model.Present embodiment is for using the embodiment of condenser of air conditioning for automobiles of containing chlorine fluorine hydro carbons cold-producing medium by flat heat exchange tubes of the present utility model.

Fig. 1 represents that the entirety of the condenser used for automobile air conditioning that is suitable for heat exchanger of the present utility model forms, the formation of the flat heat exchange tubes that the condenser of Fig. 2 and Fig. 3 presentation graphs 1 uses.In addition, Fig. 4 represents the operation of a part for the method for the flat heat exchange tubes shown in shop drawings 2 and Fig. 3.

In addition, in the following description, using direction of ventilation downstream, (direction shown in arrow X in Fig. 1 and Fig. 2) as front, using its opposition side as rear, using in the time observing this downstream from direction of ventilation upstream side upper and lower, left and right (upper and lower, the left and right of Fig. 1) as up and down, left and right.In addition, in the following description, the term of " aluminium " comprises the aluminium alloy beyond fine aluminium.

In Fig. 1, condenser 1 used for automobile air conditioning has: under the state using length direction as above-below direction along left and right directions spaced apart a pair of aluminum catch box 2,3 that configures; Between two catch boxs 2,3, make width frontage and airiness direction (fore-and-aft direction) and above-below direction spaced apart configure and both ends by soldering the multiple aluminum flat heat exchange tubes 4 on two catch boxs 2,3; Be configured in adjacent heat-exchange tube 4 each other and the outside of the heat-exchange tube 4 at upper and lower two ends and the fin 5 outside the aluminum corrugated on heat-exchange tube 4 by soldering; Be configured in upper and lower two ends outer fin 5 outside and by the soldering aluminum side plate 5,6 on fin outside.

Left side catch box 2, above the central portion of short transverse, is separated into upper and lower two 2a of liquid collecting portion, 2b by partition member 7, and right side catch box 3, below the central portion of short transverse, is separated into upper and lower two 3a of liquid collecting portion, 3b by partition member 7.The upper liquid collecting 2a of portion of left side catch box 2 is formed with fluid intake (omit diagram), the aluminum inlet part 8 with the inflow road 8a being communicated with fluid intake by soldering on the upper liquid collecting 2a of portion.In addition, on the lower liquid collecting 3b of portion of right side catch box 3, be formed with fluid issuing (omit diagram), the aluminum spout member 9 with the outflow road 9a being communicated with fluid issuing by soldering on the lower liquid collecting 3b of portion.

The catch box 2,3 of left and right is made up of the aluminum tube that at least has a brazing material layer at outer surface, the raw material plate being for example made up of the aluminium brazing filler metal sheet on two sides with brazing material layer is shaped as tubular and edge, both sides part superposition and is formed by the cylindrical body of soldering mutually, and comprises: the box main body 11 with multiple pipe patchholes long on fore-and-aft direction; By soldering at the two ends of box main body 11 and the aluminum closed block 12 of its both ends open of locking.In addition the detailed omission diagram of catch box main body 11.In addition, catch box main body 11 can also be had the aluminum extruded pipe of brazing material to form by thermal spraying by outer peripheral face.

As shown in Figure 2, flat heat exchange tubes 4 has: above-below direction ground spaced apart relative a pair of flat wall 13,14 mutually; The edge, both sides, front and back that is located at two flat wall 13,14 two sidewalls 15 each other; Be located at respectively the strengthening part 16 of the inner side of two side 15; Be located at the inside of flat heat exchange tubes 4 and inner space is separated into along the wavy partition member 18 of multiple refrigerant passage 17 of length of tube direction extension, flat heat exchange tubes 4 is aluminium brazing filler metal sheet (brazing sheet) bendings entirety on two sides to brazing material layer, to needing position carry out soldering and form thus.Strengthening part 16 covers the inner surface of sidewall 15, and by soldering at sidewall 15 inner surfaces.

The entirety of the downside flat wall 13 of flat heat exchange tubes 4 is integrally formed, and upside flat wall 14 forms by two partition walls 19 side by side on pipe width (fore-and-aft direction).Outside the edge, both sides, front and back of downside flat wall 13 and the pipe width of two partition walls 19, between edge, being provided with is the circular-arc sidewall 15 that direction foreign side gives prominence to forwards, backwards in the upper extension of pipe short transverse (above-below direction) and shape of cross section respectively.

Inside pipe width in two partition walls 19 of the upside flat wall 14 of flat heat exchange tubes 4 edge be formed with respectively side-prominent to downside flat wall 13 and under the state of front end and downside flat wall 13 butts by soldering the outstanding wall 21 of outstanding wall 21, two in downside flat wall 13 mutually by soldering.Partition member 18 is integrally formed in the front end of outstanding wall 21 in the mode of stretching out to pipe width outside.

Partition member 18 is configured to and comprises: extend and on pipe width (fore-and-aft direction), arrange abreast and the refrigerant passage 17 of separating adjacent multiple partition walls 22 each other length of tube direction (left and right directions) is upper; By the two ends of pipe short transverse (above-below direction), partition wall adjacent on pipe width 22 is alternately linked and is brazed in each other to the linking part 23 of the cross circular section arcuation of two flat wall 13,14 inner surfaces.And, form strengthening part 16 in the mode being connected with an end of the pipe short transverse of the partition wall 22 of the pipe width outer end in each partition member 18, here, an end of the pipe short transverse of strengthening part 16 is that upper end is that upper end is connected with an end of the pipe short transverse of the partition wall 22 of pipe width outer end.

As shown in Figure 3, be bottom in the other end of the pipe short transverse of strengthening part 16, with sidewall 15 sides of sidewall 15 opposition sides that are provided with strengthening part 16, in the strengthening part 16 of front side, be integrally formed with the extension 24 extending to rear side; In the strengthening part 16 of rear side, be integrally formed with the extension 24 extending to front side.Partition wall 22 butts of strengthening part 16 side ends in the leading section of extension 24 and partition member 18 are also brazed in partition wall 22.Extension 24 overall flat, the entirety of extension 24 is brazed in downside flat wall 13 under the state of a part for the inner surface of covering downside flat wall 13.In addition, under the state that is provided with the inner surface that is covering upside flat wall 14 between the upper end of strengthening part 16 and the upper end of partition wall 22, be brazed in the smooth covering part 25 of upside flat wall 14.

Flat heat exchange tubes 4 is by the method manufacture shown in Fig. 4.

First the raw metal plate 30 that, preparation is made up of the aluminium brazing filler metal sheet on two sides with brazing material layer.Raw metal plate 30 has: the flat wall forming portion 31 that forms downside flat wall 13; Be located at the both side edges of flat wall forming portion 31 and two sidewall forming portions 32 of formation sidewall 15; Be located at two partition wall forming portions 33 of the lateral margin of opposition side and the partition wall 19 of formation upside flat wall 14 of the flat wall forming portion 31 in two side forming portion 32; Be located at the lateral margin of opposition side and two outstanding wall forming portions 34 of the outstanding wall 21 of formation of the sidewall forming portion 32 in two partition wall forming portions 33; Be located at the lateral margin of opposition side and two partition member forming portions 35 of formation partition member 18 of the partition wall forming portion 33 in two outstanding wall forming portions 34; Be located at the lateral margin of opposition side and the covering part forming portion 36 of formation covering part 25 of the outstanding wall forming portion 34 in two partition member forming portions 35; Be located at the lateral margin of opposition side and two strengthening part forming portions 37 of formation strengthening part 16 of the partition member forming portion 35 in two covering part forming portions 36; And be located at the covering part forming portion 36 in two strengthening part forming portions 37 opposition side lateral margin and form the extension forming portion 38 of extension 24.And, multiple partition walls 22 are set in the partition member forming portion 35 of raw metal plate 30 and link adjacent partition wall 22 linking part 23(each other with reference to Fig. 4 (a)).

Next, by the strengthening part forming portion 37 of raw metal plate 30 with respect to 36 bendings of covering part forming portion (with reference to Fig. 4 (b)), and by extension forming portion 38 with respect to 36 bendings of covering part forming portion, form thus covering part 25, strengthening part 16 and extension 24, make partition wall 22(that the leading section of extension 24 is connected to strengthening part 16 side ends in partition member forming portion 35 with reference to Fig. 4 (c)).

Then, by the partition member forming portion 35 of raw metal plate 30 with respect to outstanding wall forming portion 34 bendings, and will give prominence to wall forming portion 34 with respect to 33 bendings of partition wall forming portion (with reference to Fig. 4 (d)), make thus the one-sided linking part 23 of partition member forming portion 35 form partition member 18 with partition wall forming portion 33 butts, and form outstanding wall 21(with reference to Fig. 4 (e)).

Next, by partition wall forming portion 33 with respect to 32 bendings of sidewall forming portion, and by sidewall forming portion 32 with respect to 31 bendings of flat wall forming portion (with reference to Fig. 4 (f)), thus, make the linking part 23 of the opposite side of partition member forming portion 35 be connected to flat wall forming portion 31 and make two outstanding wall forming portion 34 face contacts each other, thus, make warpage body 40, this warpage body 40 comprises: downside flat wall 13, comprise the upside flat wall 14 of two partition walls 19, two side 15, two outstanding walls 21, partition member 18, strengthening part 16, extension 24 and covering part 25(are with reference to Fig. 4 (g)).Then, to two outstanding walls 21 each other, the partition wall 22 of the linking part 23 of partition member 18 and two flat wall 13,14, strengthening part 16 and the leading section of two side 15, extension 24 and downside flat wall 13, covering part 25 and upside flat wall 14 and extension 24 and strengthening part 16 side ends of partition member 18 carries out soldering.Manufacture like this flat heat exchange tubes 4.

The manufacture of the manufacture of flat heat exchange tubes 4 and condenser 1 is carried out simultaneously., prepare at least to there is brazing material layer and be formed with a pair of tubular aluminum catch box main body blank, closed block 12, multiple corrugated aluminum fins 5, side plate 6, partition member 7, inlet part 8 and the spout member 9 of multiple pipe patchholes at outer surface.Then, configure spaced apart a pair of catch box main body blank, and at the two ends of two catch box main body blanks configuration closed block 12, then configure partition member 7 on two catch box main body blanks, thus catch box blank prepared.In addition, by warpage body 40 and outer fin 5 alternate configurations, the both ends of warpage body 40 are inserted to the pipe patchhole of catch box blank.Now, the partition wall 22 of extension 24 and partition member 18 against, and partition member 18 and outstanding wall 21 against, two strengthening parts 16 are urged in two side 15 sides.Therefore, can prevent warpage body 40 broad ways distortion in the time processing warpage body 40.In addition, at the outside of the outer fin 5 at two ends configuration side plate 6, then configure inlet part 8 and spout member 9.

Next, thereby the catch box blank being made up of catch box main body blank, closed block 12, partition member 7, warpage body 40, outer fin 5, side plate 6, inlet part 8 and spout member 9 are carried out to the temporary fixed temporary fixed body of manufacturing, and to temporary fixed body coating solder flux.Then, temporary fixed body is put into soldering oven, and in soldering oven, temporary fixed body is heated to set point of temperature, with manufacture flat heat exchange tubes 4 side by side, manufacture catch box 2,3 by the catch box blank being formed by catch box main body blank and closed block 12, and to heat-exchange tube 4 and catch box 2,3; Heat-exchange tube 4 and outer fin 5; Outer fin 5 and side plate 6 and catch box 2,3 and inlet part 8 and spout member 9 carry out respectively soldering simultaneously.Manufacture like this condenser 1.

In the above-described embodiment, be provided with strengthening part in the inner side of the two side of flat heat exchange tubes 4, but be not limited to this, can also only be provided with strengthening part 16 in the inner side of a side sidewall.

Fig. 5 represents other embodiment of flat heat exchange tubes of the present utility model.

In the case of being the flat heat exchange tubes 50 shown in Fig. 5, in the part of forward end that is located at the extension 24 on strengthening part 16, be provided with to the bend 51 of the central portion lateral bend of pipe short transverse, partition wall 22 butts of strengthening part 16 side ends in the leading section of bend 51 and partition member 18, the entirety of the part except bend 51 in extension 24 covers a part for the inner surface of downside flat wall 13.

Flat heat exchange tubes 50 is by the method manufacture shown in Fig. 6.Method shown in method shown in Fig. 6 and Fig. 4 is roughly the same, and same section is marked to identical mark.

In the method for manufacture flat heat exchange tubes 50, in the time that thereby the strengthening part forming portion 37 of raw metal plate 30 is formed to covering part 25, strengthening part 16 and extension 24 with respect to 36 bendings of covering part forming portion and by extension forming portion 38 with respect to strengthening part forming portion 37 is bending, the leading section bending of extension forming portion 38 is formed to bend 51(with reference to Fig. 6 (a)).Then, by bending covering part 25, strengthening part 16 and extension 24, and make partition wall 22 butts of strengthening part 16 side ends in leading section and the partition member forming portion 35 of bend 51 of extension 24, thus, both ends at raw metal plate 30 form cylindrical portion 52, and the size of the thickness direction of the raw metal plate 30 of this cylindrical portion 52 forms than the interval between the inner surface of two flat wall 13,14 of the flat heat exchange tubes 50 that should manufacture large (with reference to Fig. 6 (b)).

Then, the partition member forming portion 35 of raw metal plate 30 is bending and will give prominence to wall forming portion 34 with respect to 33 bendings of partition wall forming portion with respect to outstanding wall forming portion 34, thus, make the one-sided linking part 23 of partition member forming portion 35 form partition member 18 with partition wall forming portion 33 butts, and form outstanding wall 21(with reference to Fig. 6 (c)).Then, when partition wall forming portion 33 is bending and sidewall forming portion 32 is bending with respect to flat wall forming portion 31 with respect to sidewall forming portion 32 (with reference to Fig. 6 (d)), be out of shape by making cylindrical portion 52, and strengthening part 16 and sidewall 15 inner surfaces are close to, and the extension 24 with bend 51 is close to the inner surface of the flat wall 14 being made up of two partition walls 19, thereby and then is formed smooth covering part 25 and be close to and make warpage body 55(with reference to Fig. 6 (e) with the inner surface of flat wall 13).Then, with the situation of flat heat exchange tubes 4 similarly, to two outstanding walls 21 each other, the linking part 23 of partition member 18 and two flat wall 13,14, strengthening part 16 and the leading section of bend 51 of two side 15, extension 24 and downside flat wall 13, covering part 25 and upside flat wall 14 and extension 24 and the partition wall 22 of strengthening part 16 side ends of partition member 18 carry out soldering, manufactures thus flat heat exchange tubes 50.

In addition, this flat heat exchange tubes 50 is also similarly simultaneously manufactured with condenser 1 with flat heat exchange tubes 4.

Industrial applicibility

Flat heat exchange tubes of the present utility model is preferably applicable to the condenser of the kind of refrigeration cycle that forms air conditioning for automobiles.

Claims

1. a flat heat exchange tubes, has: relative a pair of flat wall mutually; The edge, both sides that is located at two flat wall two sidewalls each other; Be located at the strengthening part of the inner side of the sidewall of at least one party of two side; Inner space is separated into the wavy partition member of multiple refrigerant passage extending along length of tube direction, partition member has along length of tube direction and extends and on pipe width, be arranged side by side and the refrigerant passage of separating adjacent multiple partition walls each other; The linking part that adjacent partition wall is alternately linked and is engaged in each other to two flat wall inner surfaces at the two ends place of pipe short transverse, is characterized in that,

2. flat heat exchange tubes as claimed in claim 1, is characterized in that, strengthening part covers the inner surface of sidewall, and at least a portion of extension covers a part for the inner surface of the flat wall of a side.

3. flat heat exchange tubes as claimed in claim 2, is characterized in that, the entirety of extension covers a part for the inner surface of the flat wall of a described side.

4. flat heat exchange tubes as claimed in claim 2, it is characterized in that, part at the forward end of extension is provided with to the bend of the central portion lateral bend of pipe short transverse, the partition wall butt of the strengthening part side end in leading section and the partition member of bend, and the entirety of the part except bend in extension covers a part for the inner surface of the flat wall of a described side.

5. the flat heat exchange tubes as described in any one of claim 2～4, is characterized in that, is provided with the covering part of the inner surface of the flat wall that covers opposite side between strengthening part and the partition wall of partition member.

6. the flat heat exchange tubes as described in any one of claim 1～4, it is characterized in that, be integrally formed the entirety of the flat wall of a side, and the flat wall of opposite side is by forming along pipe width two partition walls side by side, outside pipe width in edge, both sides and two partition walls of the flat wall of a described side, between edge, be respectively equipped with sidewall, inner side in two side is provided with strengthening part, pipe width medial margin portion in two partition walls is formed with respectively outstanding wall, described outstanding wall is side-prominent to the flat wall of a described side and be engaged in this flat wall with the state of the flat wall butt of front end and a described side respectively, and two outstanding walls are engaged mutually, partition member is integrally formed in the mode being connected with the front end of two outstanding walls and stretch out to pipe width outside, outside pipe width in partition member, edge is formed with strengthening part.

7. a heat exchanger, is characterized in that, has: be spaced from each other interval and make the multiple flat heat exchange tubes of width frontage and airiness direction with the configuration of shape side by side; Be connected with the catch box at the both ends of heat-exchange tube; Be configured in adjacent heat-exchange tube fin each other, the flat heat exchange tubes described in any one that heat-exchange tube is claim 1～4.