Collecting pipe, collecting pipe manufacturing method, heat exchanger, heat exchanger manufacturing method and air conditioning system

Abstract

The invention discloses a collecting pipe, a manufacturing method of the collecting pipe, a heat exchanger, a manufacturing method of the heat exchanger and an air conditioning system.The collecting pipe is used for the heat exchanger, the heat exchanger comprises the collecting pipe and a heat exchange single body, the collecting pipe comprises a first pipe fitting and a second pipe fitting, the first pipe fitting is provided with a first mounting part, and a plurality of first mounting holes are formed in the first mounting part; the second pipe fitting is connected with the first pipe fitting, the second pipe fitting and the first pipe fitting are independently formed, the second pipe fitting is provided with a second mounting part, a plurality of second mounting holes are formed in the second mounting part, and the second mounting part and the first mounting part are stacked to form a mounting plate used for mounting a heat exchange single body of the heat exchanger; the second mounting holes correspond to the first mounting holes in a one-to-one mode, and each second mounting hole and the corresponding first mounting hole jointly form an insertion hole used for insertion of the corresponding heat exchange single body. According to the collecting pipe provided by the embodiment of the invention, the tool breakage rate of the tool for tapping is reduced, and the process stability of tapping processing of the collecting pipe can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a header, a method for manufacturing the header, a heat exchanger, a method for manufacturing the heat exchanger, and an air conditioning system. Background Art

[0002] In the related art, the heat exchanger includes a header and a heat exchange unit. The heat exchange unit is plugged into the header. A plug hole for plugging the heat exchange unit is formed on the header. A cutter can be used to drill a hole in the header to form the plug hole. However, the cutter is easy to break, and the process stability of drilling the header is low. Therefore, there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a manifold, the manifold includes a first pipe member and a second pipe member, the first mounting portion of the first pipe member and the second mounting portion of the second pipe member are independently formed, the first mounting portion and the second mounting portion are relatively thin, a hole is opened on the first mounting portion to form a first mounting hole, and a hole is opened on the second mounting portion to form a second mounting hole, the first mounting hole and the corresponding second mounting hole constitute a plug-in hole for plugging in a heat exchange unit, and this arrangement can reduce the tool breakage rate, thereby improving the process stability of the manifold hole opening processing.

[0004] The present invention also provides a method for manufacturing the current collecting pipe.

[0005] The present invention also provides a heat exchanger having the above-mentioned collecting pipe.

[0006] The present invention also provides a method for manufacturing the heat exchanger.

[0007] The present invention also provides an air conditioning system having the heat exchanger.

[0008] According to the first aspect of the present invention, a collecting pipe is used for a heat exchanger, and the heat exchanger includes the collecting pipe and a heat exchange unit, and the collecting pipe includes: a first pipe fitting, having a first mounting portion, and the first mounting portion is formed with a plurality of first mounting holes; a second pipe fitting, connected to the first pipe fitting, the second pipe fitting and the first pipe fitting are independently formed, and the second pipe fitting has a second mounting portion, and the second mounting portion is formed with a plurality of second mounting holes; wherein the second mounting portion is overlapped with the first mounting portion and forms a mounting plate for mounting the heat exchange unit of the heat exchanger, and the plurality of second mounting holes correspond to the plurality of first mounting holes respectively, and each second mounting hole and the corresponding first mounting hole together constitute a plug-in hole for plugging the heat exchange unit.

[0009] According to the collecting pipe of the embodiment of the present invention, the collecting pipe includes a first pipe fitting and a second pipe fitting, the first mounting portion of the first pipe fitting and the second mounting portion of the second pipe fitting are independently formed respectively, the thickness of the first mounting portion and the second mounting portion is relatively small, a hole is opened on the first mounting portion to form a first mounting hole, and a hole is opened on the second mounting portion to form a second mounting hole, the first mounting hole and the corresponding second mounting hole constitute a plug-in hole for plugging in a heat exchange unit, and this arrangement can reduce the tool breakage rate, thereby improving the process stability of the collecting pipe hole opening processing.

[0010] According to some embodiments of the present invention, a ratio of a thickness of the first mounting portion to a thickness of the second mounting portion is in a range of 0.6 to 1.5.

[0011] According to some embodiments of the present invention, the remaining portion of the manifold excluding the mounting plate is a main pipe portion, and the thickness of the first mounting portion and the second mounting portion are both smaller than the wall thickness of the main pipe portion.

[0012] According to some embodiments of the present invention, the remaining portion of the header except the mounting plate is a main pipe portion, and the thickness of the mounting plate is not less than the wall thickness of the main pipe portion.

[0013] According to some embodiments of the present invention, a manifold is defined in the first pipe member, and the first pipe member includes a main body portion and the first mounting portion which are arranged along a circumferential direction of the first pipe member.

[0014] According to some optional embodiments of the present invention, the thickness of the first mounting portion is smaller than the wall thickness of the main body; and / or the thickness of the second mounting portion is smaller than the wall thickness of the main body.

[0015] According to some optional embodiments of the present invention, the second pipe further includes a positioning portion, the positioning portion is connected to at least one side in the width direction of the second mounting portion, the positioning portion is arranged at an angle to the second mounting portion, and the positioning portion is connected to the main body.

[0016] According to some optional embodiments of the present invention, a matching notch is formed at least at one end of the main body in the circumferential direction, the matching notch penetrates the circumferential end surface of the main body, and the positioning portion is accommodated in the matching notch.

[0017] According to some optional embodiments of the present invention, the matching notch extends along the length direction of the main body portion, and the positioning portion extends along the length direction of the second mounting portion.

[0018] According to some optional embodiments of the present invention, the positioning portion is arranged flush with the same side surface of the main body portion.

[0019] According to some optional embodiments of the present invention, the second pipe is installed on the outer peripheral side of the first pipe.

[0020] According to some embodiments of the present invention, the second pipe is connected to the first pipe by welding.

[0021] According to some embodiments of the present invention, the cross section of the collecting tube is D-shaped or rectangular.

[0022] According to some embodiments of the present invention, the plugging hole is in the shape of an elongated strip, and the width of the plugging hole is no more than 0.9 mm.

[0023] According to the second aspect of the present invention, a method for manufacturing the current collecting pipe includes:

[0024] Prepare a first blank and a second blank, process a first mounting portion of the first blank to form a plurality of first mounting holes to form the first tube, and process a second mounting portion of the second blank to form a plurality of second mounting holes to form the second tube;

[0025] The first pipe member and the second pipe member are assembled to form the header.

[0026] According to the manufacturing method for a collecting tube according to an embodiment of the present invention, the first blank and the second blank are processed respectively to form the first tube member and the second tube member. The thickness of the first blank and the second blank is relatively small, and the tool used for hole opening processing is not easy to break, thereby making the process stability of the collecting tube manufacturing and processing higher and reducing the production cost of the collecting tube.

[0027] A heat exchanger according to an embodiment of a third aspect of the present invention comprises: a first header and a second header, which are arranged opposite to each other and spaced apart, and at least one of the first header and the second header is the header described in the embodiment of the first aspect of the present invention;

[0028] A plurality of heat exchange units are connected between the first header and the second header.

[0029] According to the heat exchanger of the embodiment of the present invention, the collecting pipe is divided into a first pipe fitting and a second pipe fitting, and the first mounting portion of the first pipe fitting and the second mounting portion of the second pipe fitting are independently formed, so that the tool used for opening the hole is not easy to break, and the process stability of the opening processing of the collecting pipe is relatively high, thereby making the process stability of the heat exchanger processing relatively high.

[0030] According to some embodiments of the present invention, the heat exchange unit is formed into a flat tube shape, and the thickness of the heat exchange unit is not greater than 0.8 mm.

[0031] A method for manufacturing a heat exchanger according to a fourth aspect of the present invention includes:

[0032] Prepare a first blank and a second blank, process a first mounting portion of the first blank to form a plurality of first mounting holes to form the first tube, and process a second mounting portion of the second blank to form a plurality of second mounting holes to form the second tube;

[0033] The first pipe member, the second pipe member and a plurality of heat exchange units are assembled to form the heat exchanger.

[0034] According to the manufacturing method for a heat exchanger of an embodiment of the present invention, the tool used for opening a hole is not easy to break when processing the first pipe fitting and the second pipe fitting, the processing technology stability of the first pipe fitting and the second pipe fitting is relatively high, and the manufacturing cost of the heat exchanger is reduced.

[0035] According to some embodiments of the present invention, the first pipe member, the second pipe member, and a plurality of heat exchange units are assembled to form the heat exchanger, including:

[0036] Preliminarily assembling the first pipe fitting and the second pipe fitting;

[0037] Inserting the heat exchange unit into the plug hole and preliminarily assembling it into a heat exchanger blank;

[0038] The heat exchanger blank is placed in a heating box, heated and welded to form the heat exchanger.

[0039] An air conditioning system according to an embodiment of a fifth aspect of the present invention comprises: a heat exchanger according to an embodiment of the third aspect of the present invention.

[0040] According to the air conditioning system of the embodiment of the present invention, by providing the above-mentioned heat exchanger, the tool used for opening the hole is not easy to break, so that the processing technology of the heat exchanger is more stable and the production cost of the air conditioning system is reduced.

[0041] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0043] Figure 1 is a perspective view of a heat exchanger according to some embodiments of the present invention;

[0044] Figure 2 is a perspective view of a header according to some embodiments of the present invention;

[0045] Figure 3 yes Figure 2A schematic diagram of the structure of the current collecting tube from another angle;

[0046] Figure 4 yes Figure 2 A schematic structural diagram of the current collecting pipe from another angle;

[0047] Figure 5 yes Figure 4 The enlarged view of A in FIG.

[0048] Figure 6 yes Figure 2 A three-dimensional view of the first blank in;

[0049] Figure 7 yes Figure 2 A perspective view of the second blank in FIG.

[0050] Figure 8 yes Figure 1 A three-dimensional diagram of a heat exchange unit in FIG.

[0051] Fig. 9 yes Figure 8 A front view of the heat exchange unit in FIG.

[0052] Fig.10 is a schematic diagram of the working principle of an air conditioning system according to some embodiments of the present invention.

[0053] Reference numerals:

[0054] 1000. Air conditioning system;

[0055] 100. Heat exchanger;

[0056] 1. Manifold; 11. First manifold; 12. Second manifold; 13. First pipe fitting; 14. First mounting portion; 15. Manifold cavity; 16. Main body; 17. Matching notch; 18. Second pipe fitting; 19. Second mounting portion; 20. Positioning portion; 21. Plug-in hole; 22. Mounting plate; 23. Main pipe portion; 24. Connecting pipe; 25. First blank; 26. Second blank;

[0057] 3. Heat exchange unit; 30. Heat exchange channel;

[0058] 4. Outdoor heat exchanger; 40. Outdoor fan; 41. Indoor heat exchanger; 42. Indoor fan;

[0059] 5. Throttling component; 61. First sensor; 62. Second sensor; 63. Oil separator; 64. Gas-liquid separator; 65. First control valve; 66. Second control valve; 7. Compressor; 71. Exhaust port; 72. Return air port. DETAILED DESCRIPTION

[0060] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0061] The following describes a header 1 according to an embodiment of the present invention with reference to the accompanying drawings.

[0062] like Figure 1-Figure 9 As shown, according to the collector 1 of the embodiment of the first aspect of the present invention, the collector 1 is used for the heat exchanger 100, and the heat exchanger 100 includes the collector 1 and the heat exchange monomer 3. The collector 1 includes: a first pipe 13 and a second pipe 18. The first pipe 13 has a first mounting portion 14, and the first mounting portion 14 is formed with a plurality of first mounting holes. The second pipe 18 is connected to the first pipe 13, and the second pipe 18 and the first pipe 13 are independently formed. The second pipe 18 has a second mounting portion 19, and the second mounting portion 19 is formed with a plurality of second mounting holes. By setting the first pipe 13 and the second pipe 18 to be independently formed, a tool can be used to respectively open holes in the first mounting portion 14 to form the first mounting hole and to open holes in the second mounting portion 19 to form the second mounting hole, so that the first pipe 13 and the second pipe 18 can be opened separately to form mounting holes.

[0063] Among them, the second mounting part 19 is overlapped with the first mounting part 14 to form a mounting plate 22 for mounting the heat exchange unit 3 of the heat exchanger 100, and multiple second mounting holes correspond one by one to multiple first mounting holes respectively, and each second mounting hole and the corresponding first mounting hole together constitute a plug-in hole 21 for plugging in the heat exchange unit 3.

[0064] The second mounting portion 19 and the first mounting portion 14 are stacked to form a mounting plate 22. The thickness of the first mounting portion 14 and the second mounting portion 19 are both relatively small. Compared with the prior art of directly drilling a hole on the thicker collecting pipe 1, when a hole is drilled in the first mounting portion 14 to form a first mounting hole and a hole is drilled in the second mounting portion 19 to form a second mounting hole, the tool is not easy to break, and the process stability of the drilling process is higher.

[0065] According to the collecting pipe 1 of the embodiment of the present invention, the collecting pipe 1 includes a first pipe fitting 13 and a second pipe fitting 18. The first mounting portion 14 of the first pipe fitting 13 and the second mounting portion 19 of the second pipe fitting 18 are independently formed, and the thickness of the first mounting portion 14 and the second mounting portion 19 are both relatively small. Compared with directly drilling holes on the collecting pipe 1, drilling holes on the first mounting portion 14 and the second mounting portion 19 respectively can reduce the tool breakage rate, thereby improving the process stability of the hole drilling processing of the collecting pipe 1.

[0066] According to some embodiments of the present invention, referring to Figure 3 , the ratio of the thickness of the first mounting portion 14 to the thickness of the second mounting portion 19 is in the range of 0.6 to 1.5. When the ratio of the thickness of the first mounting portion 14 to the thickness of the second mounting portion 19 is less than or greater than the range, the difference between the thickness of the first mounting portion 14 and the thickness of the second mounting portion 19 is too large, and the thickness of the first mounting portion 14 or the second mounting portion 19 is too large. When a tool is used to open a hole, the first mounting portion 14 or the second mounting portion 19 with too large thickness will cause the tool to break easily, resulting in low process stability when generating the first mounting hole on the first mounting portion 14 or generating the second mounting hole on the second mounting portion 19.

[0067] The ratio range of the thickness of the first mounting part 14 to the thickness of the second mounting part 19 is limited within this range, the thickness of the first mounting part 14 is not much different from the thickness of the second mounting part 19, and when a tool is used to drill holes on the first mounting part 14 and the second mounting part 19, the tool is not easy to break, which can improve the process stability of the first mounting hole and the second mounting hole.

[0068] For example, the ratio of the thickness of the first mounting portion 14 to the thickness of the second mounting portion 19 may be 1, that is, the thickness of the first mounting portion 14 is equal to the thickness of the second mounting portion 19 .

[0069] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The remaining portion of the manifold 1 except the mounting plate 22 is the main pipe portion 23, and the thickness of the first mounting portion 14 and the second mounting portion 19 are both smaller than the wall thickness of the main pipe portion 23. This arrangement makes the thickness of the first mounting portion 14 and the second mounting portion 19 smaller, and when a tool is used to drill holes in the first mounting portion 14 and the second mounting portion 19, the tool breakage rate can be reduced, and the process stability of drilling the first mounting portion 14 and the second mounting portion 19 can be further improved.

[0070] According to some embodiments of the present invention, referring to Figure 1-Figure 7 The remaining part of the manifold 1 except the mounting plate 22 is the main pipe part 23, and the thickness of the mounting plate 22 is not less than the wall thickness of the main pipe part 23. The manifold 1 has certain requirements for pressure resistance. If the wall thickness is small, the pressure resistance is low, which will reduce the service life of the manifold 1. The mounting plate 22 is formed with a plug hole 21. The thickness of the mounting plate 22 is set to be not less than the wall thickness of the main pipe part 23, which can ensure the structural strength of the mounting plate 22, extend the service life of the mounting plate 22, and ensure the pressure resistance of the manifold 1.

[0071] According to some embodiments of the present invention, referring to Figure 3 and Figure 6The first pipe 13 defines a manifold 15, and the first pipe 13 includes a main body 16 and a first mounting portion 14 arranged along the circumferential direction of the first pipe 13. By defining the manifold 15 in the first pipe 13, the heat exchange medium can flow from the manifold 15 in the first pipe 13 through the plug hole 21 into the heat exchange unit 3. Compared with the manifold 15 defined by the first pipe 13 and the second pipe 18 together, the manifold 15 is defined in the first pipe 13, and the manifold 15 is integrally formed with the first pipe 13, eliminating the connection process of splicing to form the manifold 15, making the structure of the manifold 15 more stable, improving the sealing of the manifold 15, and extending the service life of the manifold 15.

[0072] When the remaining portion of the header 1 excluding the mounting plate 22 is the main pipe portion 23 , the main pipe portion 23 includes the above-mentioned main body portion 16 .

[0073] According to some optional embodiments of the present invention, referring to Figure 6 The thickness of the first mounting portion 14 is less than the wall thickness of the main body 16. The first mounting portion 14 is thinner, and the tool used for opening the hole is not easy to break, so it is convenient to open a hole on the first mounting portion 14 to form the first mounting hole, and the processing process stability of the first mounting hole is higher.

[0074] According to some optional embodiments of the present invention, referring to Figure 3 The thickness of the second mounting portion 19 is smaller than the wall thickness of the main body 16. The thickness of the second mounting portion 19 is small, and the tool used for opening the hole is not easy to break, so it is convenient to open a hole on the second mounting portion 19 to form the first mounting hole, and the processing process stability of the second mounting hole is high.

[0075] According to some optional embodiments of the present invention, referring to Figure 2 , Figure 3 , Figure 6 and Figure 7 The second pipe 18 further includes a positioning portion 20, which is connected to at least one side of the second mounting portion 19 in the width direction, and is arranged at an angle with the second mounting portion 19, and is connected to the main body 16. For example, the positioning portion 20 is connected to one side of the second mounting portion 19 in the width direction; for another example, the positioning portion 20 is connected to both sides of the second mounting portion 19 in the width direction. By providing the positioning portion 20, the second pipe 18 can be positioned and installed with the first pipe 13, and it can be ensured that the multiple first mounting holes correspond to the multiple second mounting holes respectively, and the positioning portion 20 is arranged at an angle with the second mounting portion 19, so that the positioning portion 20 is conveniently connected to the main body 16.

[0076] When the remaining portion of the manifold 1 excluding the mounting plate 22 is the main pipe portion 23 , the main pipe portion 23 includes the positioning portion 20 mentioned above.

[0077] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 6 , a matching notch 17 is formed at at least one end of the main body 16 in the circumferential direction, the matching notch 17 penetrates the circumferential end surface of the main body 16, and the positioning portion 20 is accommodated in the matching notch 17. For example, a matching notch 17 is formed at one end of the main body 16 in the circumferential direction; for another example, matching notches 17 are formed at both ends of the main body 16 in the circumferential direction. When the first pipe 13 and the second pipe 18 are assembled, the matching notch 17 is provided so that the positioning portion 20 can be positioned and installed in the matching notch 17, which facilitates the connection between the first pipe 13 and the second pipe 18, ensures the positioning and installation of the second pipe 18 and the first pipe 13, and makes the connection between the second pipe 18 and the first pipe 13 more stable.

[0078] The wall thickness of the main body 16 is the wall thickness of the main body 16 excluding the matching notch 17 .

[0079] According to some optional embodiments of the present invention, referring to Figure 6 and Figure 7 The matching notch 17 extends along the length direction of the main body 16, and the positioning portion 20 extends along the length direction of the second mounting portion 19. The matching notch 17 and the positioning portion 20 extend in the same direction, so that the connection area between the matching notch 17 and the positioning portion 20 is larger, so that the positioning portion 20 can be more stably accommodated in the matching notch 17, so that the first pipe 13 and the second pipe 18 can be connected more stably.

[0080] According to some optional embodiments of the present invention, referring to Figure 3 The positioning portion 20 is flush with the same side surface of the main body 16. This arrangement facilitates the matching of the header 1 with other components of the heat exchanger 100.

[0081] According to some optional embodiments of the present invention, referring to Figure 1-Figure 3 , the second pipe fitting 18 is installed on the outer peripheral side of the first pipe fitting 13. If the second pipe fitting 18 is installed on the outer peripheral side of the first pipe fitting 13, it is inconvenient to connect the first pipe fitting 13 with the second pipe fitting 18. This arrangement is convenient to operate, and it is convenient to connect the second pipe fitting 18 with the first pipe fitting 13, which is convenient for the production and manufacturing of the header 1.

[0082] According to some embodiments of the present invention, the second pipe 18 is connected to the first pipe 13 by welding. The second pipe 18 and the first pipe 13 are connected by welding so that the second pipe 18 and the first pipe 13 can be connected more stably and reliably.

[0083] According to some embodiments of the present invention, referring to Figure 1-Figure 3The cross section of the header 1 is D-shaped or rectangular. This arrangement allows the header 1 with different cross sections to be selected according to the use requirements, and the heat exchanger 100 with the header 1 can be used more flexibly.

[0084] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 , the plug hole 21 is in the shape of a long strip, and the width L1 of the plug hole 21 is not greater than 0.9 mm. The heat exchange unit 3 is plugged into the plug hole 21, and the width of the plug hole 21 is small, and the thickness of the heat exchange unit 3 is also small, which is conducive to the heat exchange of the heat exchange unit 3 and can improve the performance of the heat exchanger 100. However, when the width L1 of the plug hole 21 is not greater than 0.9 mm, the thickness of the tool used for opening the hole is also not greater than 0.9 mm. The thickness of the tool is thin, and the blade is easy to break. If the thickness of the header 1 is large during processing, the tool will be more likely to break, and the processing process stability is low. By setting the first mounting part 14 and the second mounting part 19, the thickness of the first mounting part 14 and the second mounting part 19 is small, and the tool is not easy to break when opening the first mounting part 14 and the second mounting part 19 respectively, which can effectively improve the processing process stability. This setting improves the heat exchange performance of the heat exchanger 100, and the tool used for opening the hole is not easy to break, and the process stability of opening the hole on the header 1 is high.

[0085] Reference Figure 1-Figure 9 The header 1 according to some specific embodiments of the present invention is described.

[0086] Reference Figure 1-Figure 9 In this embodiment, the header 1 is used in the heat exchanger 100 , and the cross section of the header 1 is D-shaped. The header 1 includes: a first pipe member 13 and a second pipe member 18 .

[0087] A collecting chamber 15 is defined in the first pipe fitting 13, and the first pipe fitting 13 includes a main body 16 and a first mounting portion 14 arranged along the circumferential direction of the first pipe fitting 13. The first mounting portion 14 is formed with a plurality of first mounting holes, and matching notches 17 are formed at both ends of the main body 16 in the circumferential direction. The matching notches 17 extend along the length direction of the main body 16 and penetrate the circumferential end surface of the main body 16.

[0088] The second pipe 18 has a second mounting portion 19, and a plurality of second mounting holes are formed in the second mounting portion 19. The second pipe 18 also includes a positioning portion 20, which is connected to both sides of the second mounting portion 19 in the width direction and extends along the length direction of the second mounting portion 19, and is arranged at an angle with the second mounting portion 19. The positioning portion 20 is connected to the main body 16 and is accommodated in the matching notch 17.

[0089] The second pipe fitting 18 and the first pipe fitting 13 are formed independently, and the second pipe fitting 18 is installed on the outer peripheral side of the first pipe fitting 13, and the second pipe fitting 18 is welded to the first pipe fitting 13, and the positioning portion 20 is arranged flush with the same side surface of the main body 16. The second mounting portion 19 is overlapped with the first mounting portion 14 to form a mounting plate 22 for mounting the heat exchange unit 3 of the heat exchanger 100, and a plurality of second mounting holes correspond to a plurality of first mounting holes respectively, and each second mounting hole and the corresponding first mounting hole together constitute a plug-in hole 21 for plugging in the heat exchange unit 3. The plug-in hole 21 is in the shape of an elongated strip, and the width L1 of the plug-in hole 21 is not greater than 0.9 mm. The remaining part of the manifold 1 excluding the mounting plate 22 is the main pipe portion 23, and the main pipe portion 23 includes the main body 16. The ratio of the thickness of the first mounting portion 14 to the thickness of the second mounting portion 19 is 1. The thickness of the first mounting portion 14 is smaller than the wall thickness of the main body 16 , the thickness of the second mounting portion 19 is also smaller than the wall thickness of the main body 16 , and the thickness of the mounting plate 22 is not less than the wall thickness of the main pipe 23 .

[0090] In the present embodiment, the width of the plug hole 21 is relatively small, and the thickness of the tool is also relatively thin. By arranging the first mounting portion 14 of the first pipe fitting 13 and the second mounting portion 19 of the second pipe fitting 18 to be formed independently, the thickness of the first mounting portion 14 and the second mounting portion 19 are relatively small, and the tool is not easy to break when the tool respectively opens holes in the first mounting portion 14 and the second mounting portion 19, thereby improving the process stability of the processing of forming the first mounting hole and the second mounting hole, thereby improving the process stability of the hole opening processing of the collecting pipe 1, and by accommodating the positioning portion 20 in the matching notch 17, the positioning installation of the first mounting portion 14 and the second mounting portion 19 can be achieved.

[0091] According to the second aspect of the present invention, a method for manufacturing the header 1 includes:

[0092] Prepare a first blank 25 and a second blank 26;

[0093] A plurality of first mounting holes are processed on the first mounting portion 14 of the first blank 25 to form the first pipe member 13, a plurality of second mounting holes are processed on the second mounting portion 19 of the second blank 26 to form the second pipe member 18, and the first pipe member 13 and the second pipe member 18 are assembled to form the header 1. A tool is used to process a plurality of first mounting holes on the first mounting portion 14 of the first blank 25 and a plurality of second mounting holes on the second mounting portion 19 of the second blank 26. The thickness of the first blank 25 and the second blank 26 is small, the tool is not easy to break, the processing process stability is high, and the production cost of the header 1 can be reduced.

[0094] For example, the first pipe fitting 13 includes a main body 16 and a first mounting portion 14 arranged along the circumferential direction of the first pipe fitting 13, the first mounting portion 14 is formed with a plurality of first mounting holes, and matching notches 17 are formed at both ends of the main body 16 in the circumferential direction. The second pipe fitting 18 has a second mounting portion 19 and a positioning portion 20. During the assembly process of the first pipe fitting 13 and the second pipe fitting 18, the second pipe fitting 18 is installed on the outer peripheral side of the first pipe fitting 13, the positioning portion 20 is connected to the main body 16 and accommodated in the matching notch 17, the second mounting portion 19 is overlapped with the first mounting portion 14 and forms a mounting plate 22 for mounting the heat exchange unit 3 of the heat exchanger 100, the plurality of second mounting holes correspond to the plurality of first mounting holes respectively, and each second mounting hole and the corresponding first mounting hole together constitute a plug-in hole 21 for plugging in the heat exchange unit 3.

[0095] According to the manufacturing method for the collecting tube 1 according to the embodiment of the present invention, the first blank 25 and the second blank 26 are processed respectively to form the first tube 13 and the second tube 18. The thickness of the first blank 25 and the second blank 26 is relatively small, and the tool used for hole opening processing is not easy to break, so that the process stability of manufacturing and processing of the collecting tube 1 can be higher, and the production cost of the collecting tube 1 can be reduced.

[0096] The heat exchanger 100 according to the third aspect embodiment of the present invention comprises: a first collecting tube 11, a second collecting tube 12 and a plurality of heat exchange monomers 3, the first collecting tube 11 and the second collecting tube 12 are arranged opposite to each other and spaced apart, at least one of the first collecting tube 11 and the second collecting tube 12 is the collecting tube 1 of the first aspect embodiment of the present invention, and the plurality of heat exchange monomers 3 are connected between the first collecting tube 11 and the second collecting tube 12.

[0097] For example, the first collecting tube 11 is the collecting tube 1 of the first embodiment of the present invention; for another example, the second collecting tube 12 is the collecting tube 1 of the first embodiment of the present invention; for another example, the first collecting tube 11 and the second collecting tube 12 are both the collecting tube 1 of the first embodiment of the present invention.

[0098] The collecting pipe 1 includes a first pipe fitting 13 and a second pipe fitting 18. The first mounting portion 14 of the first pipe fitting 13 and the second mounting portion 19 of the second pipe fitting 18 are independently formed respectively. The thickness of the first mounting portion 14 and the second mounting portion 19 is relatively small. The tool used to open holes in the first pipe fitting 13 and the second pipe fitting 18 is not easy to break during processing, thereby improving the process stability of processing the first pipe fitting 13 and the second pipe fitting 18. One of the first collecting pipe 11 and the second collecting pipe 12 is the above-mentioned collecting pipe 1. The heat exchanger 100 includes a first collecting pipe 11, a second collecting pipe 12 and a plurality of heat exchange monomers 3, so that this arrangement can improve the process stability of processing the heat exchanger 100.

[0099] Optionally, the first header 11 and the second header 12 are both provided with a connecting pipe 24, and a heat exchange channel 30 is formed in the heat exchange monomer 3. For example, the heat exchange medium can flow into the first header 11 from the connecting pipe 24, then flow into the second header 12 through the heat exchange channel 30 in the heat exchange monomer 3, and finally flow out from the connecting pipe 24 of the second header 12; for another example, the heat exchange medium can flow into the second header 12 from the connecting pipe 24, then flow into the first header 11 through the heat exchange channel 30 in the heat exchange monomer 3, and finally flow out from the connecting pipe 24 of the first header 11.

[0100] According to the heat exchanger 100 of the embodiment of the present invention, the collecting pipe 1 is divided into a first pipe fitting 13 and a second pipe fitting 18, and the first mounting portion 14 of the first pipe fitting 13 and the second mounting portion 19 of the second pipe fitting 18 are independently formed, so that the tool used for opening the hole is not easy to break, and the process stability of the opening processing of the collecting pipe 1 is relatively high, so that the process stability of the processing of the heat exchanger 100 can be relatively high.

[0101] According to some embodiments of the present invention, referring to Figure 8 and Fig. 9 , the heat exchange monomer 3 is formed into a flat tube shape, and the thickness L2 of the heat exchange monomer 3 is not greater than 0.8 mm. This setting makes the thickness of the heat exchange monomer 3 smaller, which is conducive to the heat exchange of the heat exchange monomer 3 and can improve the heat exchange performance of the heat exchanger 100, but the width of the plug hole 21 used to plug the heat exchange monomer 3 is also smaller, and the thickness of the tool used for opening the hole is also thinner, and the tool is easy to break. By dividing the manifold 1 into a first pipe 13 and a second pipe 18, the first mounting portion 14 of the first pipe 13 and the second mounting portion 19 of the second pipe 18 are independently formed, the thickness of the opening portion is reduced, and the breakage rate of the tool is reduced, so that the heat exchange performance of the heat exchanger 100 can be improved while improving the process stability of the opening processing of the manifold 1.

[0102] A method for manufacturing a heat exchanger 100 according to a fourth aspect of the present invention includes:

[0103] A first blank 25 and a second blank 26 are prepared, and a plurality of first mounting holes are processed on the first mounting portion 14 of the first blank 25 to form a first pipe fitting 13, and a plurality of second mounting holes are processed on the second mounting portion 19 of the second blank 26 to form a second pipe fitting 18; a tool is used to process a plurality of first mounting holes on the first mounting portion 14 of the first blank 25 and a plurality of second mounting holes on the second mounting portion 19 of the second blank 26. The thickness of the first blank 25 and the second blank 26 is small, the tool is not easy to break, and the processing process stability is high.

[0104] The first pipe member 13 , the second pipe member 18 and a plurality of heat exchange units 3 are assembled to form a heat exchanger 100 .

[0105] For example, the first pipe fitting 13 includes a main body 16 and a first mounting portion 14 arranged along the circumferential direction of the first pipe fitting 13, the first mounting portion 14 is formed with a plurality of first mounting holes, and matching notches 17 are formed at both ends of the main body 16 in the circumferential direction. The second pipe fitting 18 has a second mounting portion 19 and a positioning portion 20, the second pipe fitting 18 is mounted on the outer circumferential side of the first pipe fitting 13, and the second pipe fitting 18 is welded to the first pipe fitting 13, the positioning portion 20 is connected to the main body 16 and accommodated in the matching notch 17, the second mounting portion 19 is overlapped with the first mounting portion 14 and forms a mounting plate 22 for mounting the heat exchange unit 3 of the heat exchanger 100, the plurality of second mounting holes correspond to the plurality of first mounting holes respectively, and each second mounting hole and the corresponding first mounting hole together constitute a plug-in hole 21 for plugging the heat exchange unit 3. The heat exchange unit 3 is assembled with the first pipe fitting 13 and the second pipe fitting 18 by plugging in the plug-in hole 21.

[0106] Furthermore, the tool used for drilling holes is not easily broken when processing the first pipe member 13 and the second pipe member 18 , thereby extending the service life of the tool and reducing the production cost of the heat exchanger 100 .

[0107] According to the manufacturing method for the heat exchanger 100 of the embodiment of the present invention, the tool used for opening the hole is not easy to break when processing the first pipe fitting 13 and the second pipe fitting 18, and the processing technology stability of the first pipe fitting 13 and the second pipe fitting 18 is relatively high, thereby reducing the production cost of the heat exchanger 100.

[0108] According to some embodiments of the present invention, the first pipe 13, the second pipe 18 and a plurality of heat exchange units 3 are assembled to form a heat exchanger 100, including:

[0109] Preliminarily assemble the first pipe fitting 13 and the second pipe fitting 18;

[0110] The first pipe fitting 13 includes a main body 16 and a first mounting portion 14 arranged along the circumferential direction of the first pipe fitting 13. The first mounting portion 14 is formed with a plurality of first mounting holes. Both ends of the main body 16 in the circumferential direction are formed with matching notches 17. The second pipe fitting 18 has a second mounting portion 19 and a positioning portion 20. The second pipe fitting 18 is mounted on the outer circumferential side of the first pipe fitting 13. The positioning portion 20 is connected to the main body 16 and accommodated in the matching notch 17. The second mounting portion 19 is overlapped with the first mounting portion 14 to form a mounting plate 22 for mounting the heat exchange unit 3 of the heat exchanger 100. The plurality of second mounting holes correspond to the plurality of first mounting holes one by one, respectively. Each second mounting hole and the corresponding first mounting hole together constitute a plug-in hole 21 for plugging the heat exchange unit 3.

[0111] Insert the heat exchange unit 3 into the insertion hole 21 and preliminarily assemble the heat exchanger 100 into a blank;

[0112] The heat exchanger 100 blank is placed in a heating box and heated and welded to form the heat exchanger 100 .

[0113] Optionally, the surface of the second pipe 18 is coated with a solder layer, and the heat exchanger 100 blank can be placed in a heating box. After the solder layer melts, the various components of the heat exchanger 100 blank are welded together. This arrangement is easy to operate and facilitates the formation of the heat exchanger 100.

[0114] This arrangement assembles the first pipe fitting 13, the second pipe fitting 18 and the heat exchange unit 3 into a heat exchanger 100 blank, and then connects them together by welding. The first pipe fitting 13, the second pipe fitting 18 and the heat exchange unit 3 are stably and reliably connected, and good sealing can be ensured between the plug hole 21 and the heat exchange unit 3.

[0115] The air conditioning system 1000 according to the fifth embodiment of the present invention comprises: the heat exchanger 100 according to the third embodiment of the present invention. By providing the heat exchanger 100, the tool used for opening the hole is not easily broken, thereby reducing the production cost during processing.

[0116] like Fig.10 As shown, the air conditioning system 1000 may also include a compressor 7, an outdoor heat exchanger 4, a throttling component 5 and an indoor heat exchanger 41. For example, the indoor heat exchanger 41 may be the heat exchanger 100 of the first embodiment described above. The indoor heat exchanger 41 includes the first header 11, the second header 12 and a plurality of heat exchange units 3 described above. The compressor 7 and the outdoor heat exchanger 4 are usually located in the outdoor unit of the air conditioner. The outdoor unit of the air conditioner may also include an outdoor fan 40. The outdoor fan 40 may blow outdoor air into the air flow channel to facilitate heat exchange between the refrigerant circulating in the heat exchange unit 3 and the air. The indoor heat exchanger 41 is located in the indoor unit of the air conditioner. The indoor unit of the air conditioner may also include an indoor fan 42. The indoor fan 42 may drive the indoor air to exchange heat with the indoor heat exchanger 41 to change the indoor temperature. The throttling component 5 (such as an electronic expansion valve) may be connected between the indoor heat exchanger 41 and the outdoor heat exchanger 4. The throttling component 5 is located in the indoor unit of the air conditioner or the outdoor unit of the air conditioner.

[0117] For example, refer to Fig.10The above-mentioned compressor 7 has an exhaust port 71 and an air return port 72. The exhaust port 71 and the air return port 72 of the compressor 7 are both provided with a first sensor 61 and a second sensor 62. For example, the first sensor 61 may be a temperature sensor, and the second sensor 62 may be a pressure sensor. An oil separator 63 and a first control valve 65 are connected between the exhaust port 71 of the compressor 7 and the outdoor heat exchanger 4. The oil separator 63 can filter the oil in the compressor 7 mixed with the refrigerant, and the filtered oil can enter the compressor 7 for recycling. A gas-liquid separator 64 is connected between the first control valve 65 and the air return port 72 of the compressor 7. The gas-liquid separator 64 can reduce the content of the liquid refrigerant sucked into the air return port 72 of the compressor 7 to avoid liquid hammer in the compressor 7. A second control valve 66 is connected between the indoor heat exchanger 41 and the throttling component 5 and between the indoor heat exchanger 41 and the first control valve 65. The first control valve 65 may be a four-way valve having a first port D, a second port C, a third port E and a fourth port S.

[0118] When the air-conditioning system 1000 includes the above-mentioned compressor 7, outdoor heat exchanger 4, throttling component 5 and indoor heat exchanger 41, the cooling process of the air-conditioning system 1000 is as follows: the first interface D and the second interface C are connected, the third interface E and the fourth interface S are connected, the second control valve 66 is connected, and the refrigerant compressed by the compressor 7 is discharged through the exhaust port 71, passes through the oil separator 63 and the first interface D and the second interface C of the first control valve 65, and enters the outdoor heat exchanger 4 through the inlet and outlet, and exchanges heat with the air in the air flow channel in the outdoor heat exchanger 4; the refrigerant after heat exchange flows out of the outdoor heat exchanger 4 through the inlet and outlet, and enters the indoor heat exchanger 41 through the throttling component 5, and exchanges heat with the indoor air to cool the indoor room; then, the refrigerant flows out of the indoor heat exchanger 41, and flows into the gas-liquid separator 64 after passing through the third interface and the fourth interface, and finally enters the compressor 7 through the return air port 72 of the compressor 7.

[0119] When the air-conditioning system 1000 includes the above-mentioned compressor 7, outdoor heat exchanger 4, throttling component 5 and indoor heat exchanger 41, the heating process of the air-conditioning system 1000 is as follows: when the air-conditioning system 1000 is heating, the second control valve 66 is connected, the first interface of the first control valve 65 is connected to the third interface E, the second interface C is connected to the fourth interface S, and the refrigerant compressed by the compressor 7 is discharged through the exhaust port 71, passes through the oil separator 63 and the first interface D and the third interface E of the first control valve 65, and then enters the indoor heat exchange The refrigerant passes through the indoor heat exchanger 41, exchanges heat with the indoor air in the indoor heat exchanger 41 to increase the indoor temperature; after the heat exchange, the refrigerant flows out of the indoor heat exchanger 41, passes through the throttling component 5, and enters the outdoor heat exchanger 4 from the second inlet and outlet, and exchanges heat with the air in the air flow channel in the outdoor heat exchanger 4; the refrigerant after the heat exchange flows out of the outdoor heat exchanger 4 through the first inlet and outlet, and the refrigerant flowing out of the outdoor heat exchanger 4 passes through the second interface C and the fourth interface S and flows into the gas-liquid separator 64, and finally enters the compressor 7 through the return air port 72 of the compressor 7.

[0120] According to the air conditioning system 1000 of the embodiment of the present invention, by providing the above-mentioned heat exchanger 100, the tool used for opening the hole is not easy to break, so that the processing technology stability of the heat exchanger 100 is higher, and the production cost of the air conditioning system 1000 is reduced.

[0121] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0122] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A header for a heat exchanger, the heat exchanger comprising the header and a heat exchange unit, characterized in that: The collecting pipe comprises: A first pipe member has a first mounting portion, wherein the first mounting portion is formed with a plurality of first mounting holes; A second pipe member connected to the first pipe member, the second pipe member and the first pipe member are independently formed, the second pipe member has a second mounting portion, and the second mounting portion is formed with a plurality of second mounting holes; Among them, the second mounting part and the first mounting part are overlapped to form a mounting plate for mounting the heat exchange unit, and the plurality of second mounting holes correspond one by one to the plurality of first mounting holes respectively, and each second mounting hole and the corresponding first mounting hole together constitute a plug-in hole for plugging the heat exchange unit.

2. The header according to claim 1, characterized in that: The ratio of the thickness of the first mounting portion to the thickness of the second mounting portion is in a range of 0.6 to 1.

5.

3. The header according to claim 1, characterized in that: The remaining portion of the manifold except the mounting plate is a main pipe portion, and the thickness of the first mounting portion and the second mounting portion are both smaller than the wall thickness of the main pipe portion.

4. The header according to claim 1, characterized in that: The remaining part of the collecting pipe except the mounting plate is a main pipe part, and the thickness of the mounting plate is not less than the wall thickness of the main pipe part.

5. The header according to claim 1, characterized in that: A manifold is defined in the first pipe member, and the first pipe member includes a main body portion and the first mounting portion which are arranged along a circumferential direction of the first pipe member.

6. The header according to claim 5, characterized in that: The thickness of the first mounting portion is smaller than the wall thickness of the main body; and / or the thickness of the second mounting portion is smaller than the wall thickness of the main body.

7. The header according to claim 5, characterized in that: The second pipe further includes a positioning portion, which is connected to at least one side of the second mounting portion in a width direction, is arranged at an angle with the second mounting portion, and is connected to the main body.

8. The header according to claim 7, characterized in that: A matching notch is formed at at least one end of the main body in the circumferential direction. The matching notch penetrates the circumferential end surface of the main body, and the positioning portion is accommodated in the matching notch.

9. The header according to claim 8, characterized in that: The matching notch extends along the length direction of the main body, and the positioning portion extends along the length direction of the second mounting portion.

10. The header according to claim 7, characterized in that: The positioning portion is arranged flush with the same side surface of the main body portion.

11. The header according to any one of claims 5 to 10, characterized in that: The second pipe is installed on the outer peripheral side of the first pipe.

12. The header according to any one of claims 1 to 10, characterized in that: The second pipe is connected to the first pipe by welding.

13. The header according to any one of claims 1 to 10, characterized in that: The cross section of the collecting pipe is D-shaped or rectangular.

14. The header according to any one of claims 1 to 10, characterized in that: The plug-in hole is in the shape of an elongated strip, and the width of the plug-in hole is no greater than 0.9 mm.

15. A method for manufacturing a header according to any one of claims 1 to 14, characterized in that: include: Prepare a first blank and a second blank, process a first mounting portion of the first blank to form a plurality of first mounting holes to form the first tube, and process a second mounting portion of the second blank to form a plurality of second mounting holes to form the second tube; The first pipe member and the second pipe member are assembled to form the header.

16. A heat exchanger, characterized in that: include: A first current collecting tube and a second current collecting tube are arranged opposite to each other and spaced apart, and at least one of the first current collecting tube and the second current collecting tube is a current collecting tube according to any one of claims 1 to 14; A plurality of heat exchange units are connected between the first header and the second header.

17. The heat exchanger according to claim 16, characterized in that The heat exchange unit is formed into a flat tube shape, and the thickness of the heat exchange unit is not greater than 0.8 mm.

18. A method for manufacturing a heat exchanger according to claim 16 or 17, characterized in that: include: Prepare a first blank and a second blank, process a first mounting portion of the first blank to form a plurality of first mounting holes to form the first tube, and process a second mounting portion of the second blank to form a plurality of second mounting holes to form the second tube; The first pipe member, the second pipe member and a plurality of heat exchange units are assembled to form the heat exchanger.

19. The method for manufacturing a heat exchanger according to claim 18, characterized in that: Assembling the first pipe member, the second pipe member and a plurality of heat exchange units to form the heat exchanger includes: Preliminarily assembling the first pipe fitting and the second pipe fitting; Inserting the heat exchange unit into the plug hole and preliminarily assembling it into a heat exchanger blank; The heat exchanger blank is placed in a heating box, heated and welded to form the heat exchanger.

20. An air conditioning system, characterized in that: include: A heat exchanger according to claim 16 or 17.

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