Current collector and heat exchanger

Abstract

The application relates to the technical field of new energy automobile heat control, in particular to a current collector and a heat exchanger. The current collector comprises an inner current collection pipeline, an outer current collection pipeline and a connecting assembly; the inner current collection pipeline is located in the outer current collection pipeline; the connecting assembly comprises a connecting pipe, a locking screw base, a connecting seat and a connecting nut; the locking screw base is provided with a through hole; the locking screw base comprises a screw rod part and an abutting part which are connected with each other; the connecting seat is provided with a communication flow channel; one end of the connecting pipe penetrates through the through hole and extends into the communication flow channel; the inner current collection pipeline is provided with a communication port; the connecting seat is connected and fixed with the inner current collection pipeline, the communication flow channel and the communication port are communicated, the outer current collection pipeline is provided with a mounting port; the abutting part abuts against the inner wall of the outer current collection pipeline; the screw rod part extends out of the outer current collection pipeline from the mounting port; the connecting nut is sleeved outside the screw rod part; the connecting pipe is used for circulating a first medium; the outer current collection pipeline is provided with a second medium circulation port.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal control of new energy vehicles, and in particular to a current collector and a heat exchanger. Background Art

[0002] With the rapid development of new energy vehicles, integrated heat exchangers, as new products in their heat pump systems, have made system costs and space utilization more advantageous, and the use of integrated heat exchangers has become increasingly common. Figure 1 As shown, there is a heat exchanger in the related art that can recycle the heat of the heat dissipation components in new energy vehicles to reduce vehicle energy consumption and improve vehicle endurance. The heat exchanger includes a first collector 10, a second collector 20 and a core 30; the core 30 is located between the first collector 10 and the second collector 20, and the first collector 10 and the second collector 20 both include a first medium cavity and a second medium cavity. The core 30 has a first medium flow channel and a second medium flow channel isolated from each other, the first medium flow channel is respectively connected to the first medium cavity on the first collector 10 and the second collector 20, and the second medium flow channel is respectively connected to the second medium cavity on the first collector 10 and the second collector 20; the first collector 10 includes a first manifold and a second manifold, the second manifold is sleeved inside the first manifold, the inner cavity of the second manifold is the first medium cavity, and the second medium cavity is formed between the inner wall of the first manifold and the outer wall of the second manifold; in the length direction of the second manifold, both ends of the second manifold extend out of the first manifold, wherein one end is provided with a first medium inlet 40 and the other end is provided with a first medium outlet 50.

[0003] The problem with the prior art is that the portion of the second header extending out of the first header cannot accommodate the core, resulting in the inability to maximize the effective ventilation area of ​​the core within a limited space. Summary of the Invention

[0004] The object of the present invention is to provide a current collector and a heat exchanger to solve, to a certain extent, the technical problem in the prior art that the effective ventilation area of ​​the core cannot be maximized within a limited space.

[0005] The present invention provides a collector, comprising: an inner collecting pipe, an outer collecting pipe and a connecting assembly; the inner collecting pipe is located in the outer collecting pipe; the connecting assembly comprises a connecting pipe, a locking screw seat, a connecting seat and a connecting nut, the locking screw seat is provided with a through-hole, the locking screw seat comprises a screw portion and an abutment portion connected to each other, the connecting seat is provided with a connecting flow channel, one end of the connecting pipe passes through the through-hole and extends into the connecting flow channel; the inner collecting pipe is provided with a connecting port, the connecting seat is connected and fixed to the inner collecting pipe, and the connecting flow channel is connected with the connecting port, the outer collecting pipe is provided with a mounting port, the abutment portion abuts against the inner wall of the outer collecting pipe, the screw portion extends out of the outer collecting pipe from the mounting port, and the connecting nut is sleeved outside the screw portion; the connecting pipe is used to circulate a first medium, and the outer collecting pipe is provided with a second medium circulation port.

[0006] When the heat exchanger formed by assembling the current collector and the core provided by the present invention is in operation, the first medium can circulate in the inner collecting pipe through the connecting pipe of the connecting assembly, and the second medium can circulate in the outer collecting pipe through the second medium circulation port, thereby realizing the overall heat exchange of the heat exchanger. The inner collecting pipe is located inside the outer collecting pipe, and the inner collecting pipe does not extend outside the outer collecting pipe. The circulation of the first medium and the circulation of the second medium can both pass through the side of the outer collecting pipe. Compared with the heat exchanger core in the related art, the space in the length direction of the current collector 1 provided by the present invention (the length direction of the current collector 1 is the same as the height direction of the heat exchanger) can be fully utilized. Under the premise that the specifications of the heat exchanger are the same, the heat exchanger formed by the current collector assembly provided by the present invention can increase the core layout area, thereby increasing the effective ventilation area, thereby increasing the heat exchange area, and thereby improving the heat exchange effect.

[0007] When assembling the current collector provided by the present invention, the connecting seat is connected and fixed to the inner collecting pipe, the abutment portion of the locking screw seat is abutted against the inner wall of the outer collecting pipe, the screw portion of the locking screw seat extends out of the outer collecting pipe from the installation port, and the connecting nut is sleeved outside the screw portion. It can also be understood that the connecting nut and the abutment portion clamp the outer collecting pipe, thereby realizing the connection between the locking screw seat and the outer collecting pipe, one end of the connecting pipe is located outside the outer collecting pipe, and the other end passes through the through-hole of the locking screw seat and extends into the connecting flow channel on the connecting seat. Among them, the locking screw seat and the installation port of the outer collecting pipe can have a certain range of motion, and the connecting pipe is inserted into the connecting flow channel. In the radial direction of the connecting pipe, the connecting pipe has a certain range of motion relative to the connecting flow channel, which can achieve a certain range of motion in the radial direction of the connecting pipe relative to the outer collecting pipe, so that the connection between the connecting assembly and the outer collecting pipe can adapt to vibration or shaking, can compensate for processing errors and assembly errors, avoid invalid connection, and make the current collector stable and reliable.

[0008] Furthermore, a first groove is provided on a surface of the abutting portion facing the outer collecting pipe, a first sealing ring is provided in the first groove, and a side of the first sealing ring away from the first groove abuts against an inner wall of the outer collecting pipe.

[0009] The relationship between the diameter ΦD of the installation opening and the outer diameter ΦE of the screw portion is (ΦD-ΦE) / 2≥0.25 mm.

[0010] Furthermore, the connecting assembly also includes a connecting piece; the connecting piece is connected to the connecting pipe and the locking screw seat respectively.

[0011] Furthermore, the connecting piece is a ferrule nut, which includes a large opening and a small opening. The cross-sectional area of ​​the large opening is larger than the cross-sectional area of ​​the small opening. The large opening side of the ferrule nut is sleeved outside the screw portion, and the small opening side of the ferrule nut is sleeved outside the connecting pipe; an annular protrusion is provided on the outer wall of the connecting pipe, and in the length direction of the connecting pipe, one side of the annular protrusion abuts against the top end of the screw portion, and the other side of the annular protrusion abuts against the inner wall of the small opening of the connecting piece.

[0012] Furthermore, the connecting assembly also includes a pressure plate; a circulation hole and a mounting hole are provided on the pressure plate, the circulation hole is sleeved on the end of the connecting pipe away from the connecting seat, and the circulation hole is connected to the inner cavity of the connecting pipe.

[0013] Furthermore, along the length direction of the connecting pipe, a second groove and a third groove are provided at intervals on the outer wall of the connecting pipe, a second sealing ring is installed in the second groove, and the side of the second sealing ring away from the second groove abuts against the inner wall of the locking screw seat, and a third sealing ring is installed in the third groove, and the side of the third sealing ring away from the third groove is connected to the inner wall of the connecting seat; the connecting assembly also includes a flat washer, which is arranged between the connecting nut and the outer wall of the outer collecting pipe.

[0014] Furthermore, the inner diameter of the connecting pipe is set to be equal everywhere; or, in the length direction of the connecting pipe, the inner diameter of the connecting pipe is set to gradually decrease from away from the connecting seat to close to the connecting seat.

[0015] Furthermore, the current collector also includes a flow equalizing plate arranged in the inner collecting pipe, the length direction of the flow equalizing plate is the same as the length direction of the inner collecting pipe, and the flow equalizing plate is arranged facing the connecting port; the flow equalizing plate includes a plate body and a plurality of flow equalizing holes arranged on the plate body.

[0016] The present invention provides a heat exchanger, comprising a core and the above-mentioned collector, wherein the core comprises a first medium pipe and a second medium pipe, the first medium pipe is connected to the inner collecting pipe, and the second medium pipe is connected to the outer collecting pipe.

[0017] It should be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily limiting of the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. Together, the description and the drawings serve to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the structure of a heat exchanger in the related art;

[0020] Figure 2 Schematic diagram of the structure of the current collector according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 An exploded view of the connection components in the current collector is shown;

[0022] Figure 4 for Figure 2 A schematic diagram of the structure of the connection between the locking screw seat and the external current collecting pipe in the current collector shown;

[0023] Figure 5 for Figure 2 A schematic structural diagram of a connecting tube in the current collector shown;

[0024] Figure 6 for Figure 2 A schematic diagram of the structure of another connecting tube in the current collector shown;

[0025] Figure 7 for Figure 2 A schematic diagram of the structure of the flow balancing plate in the current collector shown;

[0026] Figure 8 2. A schematic structural diagram of a heat exchanger from a first perspective according to an embodiment of the present invention;

[0027] Figure 9 for Figure 8 A schematic structural diagram of the heat exchanger from a second perspective is shown;

[0028] Figure 10 for Figure 8 Exploded view of the heat exchanger shown;

[0029] Figure 11 for Figure 8 A schematic structural diagram of the heat exchanger from a third perspective is shown.

[0030] Icon: 1-current collector; 2-core; 100-inner collecting pipe; 200-outer collecting pipe; 300-connecting assembly; 101-first medium cavity; 201-second medium cavity; 202-second medium flow port; 301-connecting pipe; 302-locking screw seat; 303-connecting nut; 304-connecting seat; 305-first sealing ring; 306-ferrule nut; 307-pressure plate; 308-second sealing ring; 309-third sealing ring; 310-flat washer; 311-flow balancing plate; 3011-annular protrusion; 3021-abutment portion; 3022-screw portion; 3071-mounting hole; 3072-flow hole; 3111-plate body; 3112-flow balancing hole. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] like Figures 2 to 11 As shown, the embodiment of the present invention provides a collector 1, comprising: an inner collecting pipe 100, an outer collecting pipe 200 and a connecting assembly 300; the inner collecting pipe 100 is located in the outer collecting pipe 200; the connecting assembly 300 comprises a connecting pipe 301, a locking screw seat 302, a connecting seat 304 and a connecting nut 303, the locking screw seat 302 is provided with a through hole, the locking screw seat 302 comprises a screw portion 3022 and an abutment portion 3021 connected to each other, the connecting seat 304 is provided with a connecting flow channel, one end of the connecting pipe 301 passes through the through hole and extends into the connecting flow channel; the inner collecting pipe 100 is provided with a connecting port, the connecting seat 304 is provided with a connecting port, and the connecting seat 304 is provided with a connecting port. 04 is connected and fixed to the inner collecting pipe 100, and the communicating flow channel is connected with the communicating port. A mounting port is provided on the outer collecting pipe 200, and the abutting portion 3021 abuts against the inner wall of the outer collecting pipe 200. The screw portion 3022 extends from the mounting port to the outside of the outer collecting pipe 200, and the connecting nut 303 is sleeved on the outside of the screw portion 3022. A second medium circulation port 202 is provided on the outer collecting pipe 200 (that is, the outer collecting pipe 200 is used to circulate the second medium), and the connecting pipe 301 is used to circulate the first medium (the connecting pipe 301 is also connected with the inner collecting pipe 100, so the inner collecting pipe 100 is used to circulate the first medium).

[0037] When the heat exchanger formed by assembling the current collector 1 and the core 2 provided in this embodiment is in operation, the first medium can flow in the inner collecting pipe 100 through the connecting pipe 301 of the connecting assembly 300, and the second medium can flow in the outer collecting pipe 200 through the second medium flow port 202, thereby realizing the overall heat exchange of the heat exchanger. The inner collecting pipe 100 is located inside the outer collecting pipe 200, and the inner collecting pipe 100 does not extend outside the outer collecting pipe 200. The circulation of the first medium and the circulation of the second medium can both pass through the side of the outer collecting pipe 200. Compared with the heat exchanger core 2 in the related art, the space in the length direction of the current collector 1 provided in this embodiment (the length direction of the current collector 1 is the same as the height direction of the heat exchanger) can be fully utilized. Under the premise that the specifications of the heat exchanger are the same (the overall height H can be the same and the overall width B can be the same), as shown in FIG. Figure 1 and Figure 7As shown, the height C2 of the core 2 of the heat exchanger assembled by the current collector 1 is increased compared with the height C1 of the core 2 in the prior art, so that the arrangement area of the core 2 can be increased, the effective ventilation area is improved, the heat exchange area is increased, and the heat exchange effect is improved.

[0038] In the assembly of the current collector 1, the connecting seat 304 is connected and fixed with the inner current collecting pipe 100, the abutting portion 3021 of the locking screw seat 302 is abutted with the inner wall of the outer current collecting pipe 200, the screw portion 3022 of the locking screw seat 302 is extended out of the outer current collecting pipe 200 through the mounting port, and the connecting nut 303 is sleeved outside the screw portion 3022. It can also be understood that the connecting nut 303 and the abutting portion 3021 clamp the outer current collecting pipe 200, so as to realize the connection between the locking screw seat 302 and the outer current collecting pipe 200. One end of the connecting pipe 301 is located outside the outer current collecting pipe 200, and the other end is inserted into the communication flow passage on the connecting seat 304 through the perforation of the locking screw seat 302.

[0039] The cooperation between the locking screw seat 302 and the mounting port of the outer current collecting pipe 200 can have a certain range of movement, and the connecting pipe is inserted into the communication flow passage. In the radial direction of the connecting pipe, the connecting pipe has a certain range of movement relative to the communication flow passage. Therefore, in the radial direction of the connecting pipe 301, the connecting assembly 300 can have a certain range of movement relative to the outer current collecting pipe 200, so that the connection between the connecting assembly and the outer current collecting pipe can adapt to vibration or shaking, can compensate for processing and assembly errors, avoid ineffective connection, and make the current collector stable and reliable. For example, Figure 4 As shown, the relationship between the diameter ΦD of the mounting port and the outer diameter ΦE of the screw portion 3022 is (ΦD-ΦE) / 2≥0.25mm (for example: 0.25mm, 0.27mm, 0.30mm, 0.31mm, 0.32mm or 0.34mm, etc.), and it can also be understood that the diameter ΦD of the mounting port, the outer diameter ΦE of the screw portion 3022, and ΦD minus ΦE are greater than or equal to 0.5mm.

[0040] The outer current collecting pipe 200 can include a chamber body and a main plate, and the chamber body is provided with an opening on one side, and the main plate is connected to the opening side of the chamber body. In this way, other components can be conveniently installed in the outer current collecting pipe 200. Optionally, the main plate is buckled on the chamber body, that is, the two are connected by clamping. In this way, the connection between the connecting assembly 300 and the outer current collecting pipe 200 can further adapt to the shaking or vibration in work.

[0041] As shown, Figure 2 and Figure 3As shown, based on the above embodiment, a first groove is further provided on the surface of the abutting portion 3021 facing the outer header pipe 200, and a first sealing ring 305 is provided in the first groove. The side of the first sealing ring 305 away from the first groove abuts against the inner wall of the outer header pipe 200. In this embodiment, the first sealing ring 305 is provided between the abutting portion 3021 and the inner wall of the outer header pipe 200, thereby improving the sealing between the abutting portion 3021 and the outer header pipe 200, thereby improving the sealing of the current collector 1.

[0042] Based on the above embodiment, the connection assembly 300 further includes a connector; the connector is respectively connected to the connection tube 301 and the locking screw seat 302. In this embodiment, the connector connects the portion of the connection tube 301 located in the outer collecting pipe 200 to the locking screw seat 302, thereby restraining and fixing the connection tube 301, making the connection assembly 300 stable, and further improving the stability of the current collector 1.

[0043] Among them, the connecting piece can be arranged in a rod shape, one end of which is connected to the connecting pipe 301 by snap-fitting, and the other end is also connected to the locking screw seat 302 by snap-fitting; or, the connecting piece is arranged in a cylindrical shape, and an external thread is provided on the outer wall of the connecting pipe 301, and a part of the connecting piece is tightened on the connecting pipe 301, and the other part of the connecting piece is tightened on the locking screw seat 302, etc.

[0044] As an alternative, Figure 2 As shown, the connecting piece is a ferrule nut 306, which includes a large opening and a small opening. The cross-sectional area of ​​the large opening is larger than the cross-sectional area of ​​the small opening. The large opening side of the ferrule nut 306 is sleeved outside the screw portion 3022, and the small opening side of the ferrule nut 306 is sleeved outside the connecting pipe 301; an annular protrusion 3011 is provided on the outer wall of the connecting pipe 301, and in the length direction of the connecting pipe 301, one side of the annular protrusion 3011 abuts against the top of the screw portion 3022, and the other side of the annular protrusion 3011 abuts against the inner wall of the small opening of the ferrule nut 306.

[0045] In this embodiment, during the process of passing one end of the connecting tube 301 through the hole of the locking screw seat 302, when the annular protrusion 3011 on the connecting tube 301 abuts against the end of the screw portion 3022, the connecting tube 301 is installed in place, and then the large opening side of the clamping nut 306 is put downward on the locking screw seat 302 until the inner wall of the small opening of the clamping nut 306 abuts against the annular protrusion 3011, that is, the annular protrusion 3011 is clamped between the screw portion 3022 and the clamping nut 306, and the clamping nut 306 fixes the connecting tube 301 relative to the locking screw seat 302. This structure is convenient for installation.

[0046] like Figure 2 and Figure 3 As shown, based on the above embodiment, the connecting assembly 300 further includes a pressure plate 307; a circulation hole 3072 and a mounting hole 3071 are provided on the pressure plate 307, and the circulation hole 3072 is sleeved on the end of the connecting pipe 301 away from the connecting seat 304, and the circulation hole 3072 is connected to the inner cavity of the connecting pipe 301.

[0047] In this embodiment, the connection with the external components can be achieved through the mounting hole 3071 on the pressing plate 307 , and the first medium can enter the connecting pipe 301 through the circulation hole 3072 .

[0048] like Figure 2 and Figure 3 As shown, on the basis of the above embodiment, further, along the length direction of the connecting tube 301, a second groove and a third groove are provided on the outer wall of the connecting tube 301 at intervals, a second sealing ring 308 is installed in the second groove, and the side of the second sealing ring 308 away from the second groove abuts against the inner wall of the locking screw seat 302, a third sealing ring 309 is installed in the third groove, and the side of the third sealing ring 309 away from the third groove is connected to the inner wall of the connecting seat 304.

[0049] In this embodiment, providing a second sealing ring 308 can improve the sealing between the connecting tube 301 and the locking screw seat 302, and providing a third sealing ring 309 can improve the sealing between the connecting tube 301 and the connecting seat 304, thereby further improving the overall sealing of the current collector 1.

[0050] like Figure 2 As shown, based on the above embodiment, the connection assembly 300 further includes a flat washer 310, which is arranged between the connection nut 303 and the outer wall of the outer collecting pipe 200. The arrangement of the flat washer 310 further improves the sealing performance of the collector 1.

[0051] On the basis of the above embodiment, further, the structural form of the connecting pipe 301 can be various, for example: Figure 5 As shown, the inner diameter of the connecting pipe 301 is set to be equal everywhere.

[0052] Another example: Figure 6 As shown, in the length direction of the connecting pipe 301, the inner diameter of the connecting pipe 301 is gradually reduced from away from the connecting seat 304 to close to the connecting seat 304; that is, the inner diameter of the connecting pipe 301 is set to be smaller at the top and bottom, which is conducive to the full liquefaction of the gas and liquid when the first medium enters in a gas-liquid two-phase state.

[0053] like Figure 2 and Figure 7As shown, based on the above embodiment, the collector 1 further includes a flow equalizing plate 311 arranged in the inner collecting pipe 100, the length direction of the flow equalizing plate 311 is the same as the length direction of the inner collecting pipe 100, and the flow equalizing plate 311 is arranged facing the connecting port; the flow equalizing plate 311 includes a plate body 3111 and a plurality of flow equalizing holes 3112 arranged on the plate body 3111.

[0054] In this embodiment, the connecting pipe 301 in the connecting assembly can be used to flow in the first medium, and can also be used to flow out the first medium.

[0055] For example, two connecting components 300 are provided on a current collector, the connecting tube 301 in the first connecting component 300 serves as the first medium inflow channel, and the connecting tube 301 in the second connecting component 300 serves as the first medium outflow pipe; a flow equalizing plate 311 can be provided at the outlet of the connecting flow channel in the first connecting component to prevent the first medium from flowing into the flat tube of the core 2 corresponding to the connecting flow channel when it flows out, and the flow equalizing plate 311 can divert the first medium so that the first medium can be diverted to more flat tubes. Specifically, the first medium flows into the connecting tube 301 in the first connecting component, then enters the connecting flow channel of the corresponding connecting seat 304, then enters the inner collecting pipe 100 through the connecting port on the inner collecting pipe 100, and then stays at the flow equalizing plate 311. The first medium flows to the core 2 through the flow equalizing hole 3112.

[0056] The length of the flow balancing plate 311 can be set as needed, and the number, shape, and position of the flow balancing holes 3112 can be set as needed. The shape of the flow balancing holes 3112 can be triangular, quadrilateral, pentagonal, elliptical, or circular.

[0057] As an alternative, Figure 7 As shown, along the length direction of the flow balancing plate 311, the cross-sectional area of ​​the flow balancing holes 3112 located near the two ends of the plate body 3111 is larger than the cross-sectional area of ​​the flow balancing holes 3112 located in the middle of the plate body 3111. This is more conducive to improving the eddy current generated when the first medium flows in, and further plays a role in uniformly distributing the first medium. Figures 8 to 11 As shown, an embodiment of the present invention also provides a heat exchanger, including a core 2 and a collector 1 of any of the above technical solutions, the core 2 includes a first medium pipe and a second medium pipe, the first medium pipe is connected to the inner collecting pipe 100, and the second medium pipe is connected to the outer collecting pipe 200.

[0058] Specifically, there can be two current collectors 1, one being a first current collector 1 and the other being a second current collector 1. The core 2 is connected between the two current collectors 1. A second medium flow port 202 can be provided on the outer collecting pipe 200 in the first current collector 1 as a second medium inlet, and a second medium flow port 202 can be provided on the outer collecting pipe 200 in the second current collector 1 as a second medium inlet. The second current collector 1 is provided with two mounting ports, each of which is provided with a connecting assembly 300, one connecting pipe 301 serving as the first medium inlet, and the other connecting pipe 301 serving as the first medium outlet. The inner cavity of the inner collecting pipe 100 forms a first medium cavity 101, and the inner wall of the outer collecting pipe 200 forms a second medium cavity 201 between the inner wall of the inner collecting pipe 100. The second medium flows between the second medium cavity 201 and the second medium pipe, and the first medium flows between the first medium cavity 101 and the first medium pipe. A second medium pipeline and a first medium pipeline form a heat exchange unit. The core 2 includes multiple heat exchange units, which are arranged at intervals along the length direction of the collector 1. Air passes through the intervals between the heat exchange units. The first medium can exchange heat with the second medium, and the second medium can exchange heat with the air. By setting different heat transfer directions, cooling and heating of the heat exchanger can be achieved.

[0059] The heat exchanger provided in this embodiment includes the current collector 1 of any of the above technical solutions, and thus has all the beneficial technical effects of the current collector 1, which will not be described in detail here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features therein may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description. In addition, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments.

Claims

1. A current collector, characterized in that: include: An inner header pipe (100), an outer header pipe (200), and a connection assembly (300); the inner header pipe (100) is located inside the outer header pipe (200); The connecting assembly (300) comprises a connecting pipe (301), a locking screw seat (302), a connecting seat (304) and a connecting nut (303); the locking screw seat (302) is provided with a through hole; the locking screw seat (302) comprises a screw portion (3022) and an abutting portion (3021) connected to each other; the connecting seat (304) is provided with a communicating flow channel; one end of the connecting pipe (301) passes through the through hole and extends into the communicating flow channel; The inner collecting pipe (100) is provided with a communication port, the connecting seat (304) is connected and fixed to the inner collecting pipe (100), and the communication flow channel is communicated with the communication port; the outer collecting pipe (200) is provided with a mounting port, the abutting portion (3021) abuts against the inner wall of the outer collecting pipe (200), the screw portion (3022) extends out of the outer collecting pipe (200) from the mounting port, and the connecting nut (303) is sleeved outside the screw portion (3022); the connecting pipe (301) is used for circulating a first medium, and the outer collecting pipe (200) is provided with a second medium circulation port (202); Along the length direction of the connecting tube (301), a second groove and a third groove are provided on the outer wall of the connecting tube (301) at intervals, a second sealing ring (308) is installed in the second groove, and the side of the second sealing ring (308) away from the second groove abuts against the inner wall of the locking screw seat (302), and a third sealing ring (309) is installed in the third groove, and the side of the third sealing ring (309) away from the third groove is connected to the inner wall of the connecting seat (304); In the length direction of the connecting pipe (301), the inner diameter of the connecting pipe (301) is gradually reduced from a direction away from the connecting seat (304) to a direction close to the connecting seat (304).

2. The current collector according to claim 1, characterized in that A first groove is provided on the side of the abutting portion (3021) facing the outer collecting pipe (200), a first sealing ring (305) is provided in the first groove, and a side of the first sealing ring (305) away from the first groove abuts against the inner wall of the outer collecting pipe (200).

3. The current collector according to claim 1, characterized in that The relationship between the diameter ΦD of the installation port and the outer diameter ΦE of the screw portion (3022) is (ΦD-ΦE) / 2≥0.25mm.

4. The current collector according to claim 1, characterized in that The connecting assembly (300) further comprises a connecting piece; the connecting piece is connected to the connecting pipe (301) and the locking screw seat (302) respectively.

5. The current collector according to claim 4, characterized in that The connecting piece is a ferrule nut (306), which includes a large opening and a small opening. The cross-sectional area of ​​the large opening is larger than the cross-sectional area of ​​the small opening. The large opening side of the ferrule nut (306) is sleeved outside the screw portion (3022), and the small opening side of the ferrule nut (306) is sleeved outside the connecting pipe (301). An annular protrusion (3011) is provided on the outer wall of the connecting tube (301). In the length direction of the connecting tube (301), one side of the annular protrusion (3011) abuts against the top end of the screw portion (3022), and the other side of the annular protrusion (3011) abuts against the inner wall of the small opening of the ferrule nut (306).

6. The current collector according to claim 1, characterized in that The connecting assembly (300) further comprises a pressing plate (307); a circulation hole (3072) and a mounting hole (3071) are provided on the pressing plate (307); the circulation hole (3072) is sleeved on an end of the connecting pipe (301) away from the connecting seat (304), and the circulation hole (3072) is communicated with the inner cavity of the connecting pipe (301).

7. The current collector according to claim 1, characterized in that The connection assembly (300) further comprises a flat washer (310), and the flat washer (310) is arranged between the connection nut (303) and the outer wall of the outer collecting pipe (200).

8. The current collector according to any one of claims 1 to 7, characterized in that The current collector further comprises a flow balancing plate (311) arranged in the inner collecting pipe (100), wherein the length direction of the flow balancing plate (311) is the same as the length direction of the inner collecting pipe (100), and the flow balancing plate (311) is arranged facing the connecting port; the flow balancing plate (311) comprises a plate body (3111) and a plurality of flow balancing holes (3112) arranged on the plate body (3111).

9. A heat exchanger, characterized in that: The invention comprises a core (2) and a current collector according to any one of claims 1 to 8, wherein the core (2) comprises a first medium pipe and a second medium pipe, the first medium pipe is connected to the inner collecting pipe (100), and the second medium pipe is connected to the outer collecting pipe (200).

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