CN213747386U - Heat exchanger and vehicle-mounted air conditioning system - Google Patents
Heat exchanger and vehicle-mounted air conditioning system Download PDFInfo
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- CN213747386U CN213747386U CN202022478987.1U CN202022478987U CN213747386U CN 213747386 U CN213747386 U CN 213747386U CN 202022478987 U CN202022478987 U CN 202022478987U CN 213747386 U CN213747386 U CN 213747386U
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- pitting corrosion
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Abstract
The application provides a heat exchanger and on-vehicle air conditioning system, including resistant pitting corrosion flat pipe and fin, the outer surface of resistant pitting corrosion flat pipe does not set up spouts the zinc layer. And the fins are welded with the pitting corrosion resistant flat tubes. Because the surface of the pitting corrosion resistant flat tube is not provided with the zinc spraying layer, when the fin and the pitting corrosion resistant flat tube are welded, zinc does not permeate into a welding flux at the welding position of the fin and the pitting corrosion resistant flat tube, after the fin and the pitting corrosion resistant flat tube are welded, the potential of the welding position of the fin and the pitting corrosion resistant flat tube is not lower than that of the fin, the welding flux at the welding position cannot be corroded in advance, namely the fin and the pitting corrosion resistant flat tube cannot fall off at the welding position, so that the potential of the fin can be effectively ensured to be always lower than that of the pitting corrosion resistant flat tube, the corrosion of the pitting corrosion resistant flat tube is protected through potential corrosion, the pitting corrosion resistance of the pitting corrosion resistant flat tube is strong, the pitting corrosion resistant flat tube is not easy to damage, the service life of the pitting corrosion resistant.
Description
Technical Field
The utility model relates to a heat exchange equipment field particularly, relates to a heat exchanger and on-vehicle air conditioning system.
Background
The main components of the heat exchanger are flat tubes and fins, the flat tubes are generally extruded microchannel tubes, and the flat tubes are mainly used for the circulation of refrigerant; when the heat exchanger is manufactured, the corrosion resistance of the heat exchanger needs to be considered besides the heat exchange efficiency of the heat exchanger, namely the corrosion resistance of the flat pipe is also considered. At present, the measure of corrosion prevention of the flat pipe is mainly realized by a mode of uniformly spraying zn on the surface of the flat pipe. The cooperation of the fins and the flat tubes can reduce the electric potential of the fins, and the corrosion of the flat tubes is protected through electric potential corrosion.
The research shows that the prior heat exchanger has the following defects:
the flat tube has poor corrosion resistance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat exchanger and on-vehicle air conditioning system, it can improve flat tub of corrosion-resistant performance.
The embodiment of the utility model is realized like this:
in a first aspect, an embodiment of the present invention provides a heat exchanger, include:
the outer surface of the pitting corrosion resistant flat tube is not provided with a zinc spraying layer;
and the fins are welded with the pitting corrosion resistant flat tubes.
In optional embodiment, the resistant flat pipe that loses point sets up to many, and many resistant flat pipes that lose point arrange at the thickness direction of resistant flat pipe that loses point at interval, are equipped with the fin between the arbitrary adjacent resistant flat pipe that loses point, and the fin simultaneously with adjacent resistant flat pipe welding that loses point.
In an optional embodiment, the fin extends along the length direction of the flat pipe, the fin is provided with at least one bending section in the extending direction of the fin, and two sides of the bending section in the length direction of the flat pipe are welded with the flat pipe.
In an optional embodiment, the fin has a plurality of bending sections, and each bending section is welded with the pitting resistance flat tube.
In an optional embodiment, the heat exchanger further includes a first collecting pipe and a second collecting pipe, and two ends of the flat pipe are respectively inserted into and communicated with the first collecting pipe and the second collecting pipe.
In an optional embodiment, the first collecting pipe and the second collecting pipe are both provided with flat pipe grooves, and two ends of each flat pipe are respectively inserted into the corresponding flat pipe grooves.
In an alternative embodiment, the heat exchanger further comprises a first junction and a second junction, the first header comprising a first manifold and a second manifold that are independent of each other; the first and second connectors communicate with the first and second manifolds, respectively.
In an alternative embodiment, the flat tubes are welded to the first header and the second header.
In an optional embodiment, the flat tube is provided with a plurality of micro channels, each micro channel extends along the length direction of the flat tube, and two ends of each micro channel respectively extend to two end faces of the flat tube in the length direction; a plurality of microchannel are at the width direction interval arrangement of flat pipe.
In a second aspect, an embodiment of the present invention provides an on-vehicle air conditioning system, the on-vehicle air conditioning system includes:
the heat exchanger of any of the preceding embodiments.
The embodiment of the utility model provides a beneficial effect is:
in summary, the present embodiment provides a heat exchanger, including a pitting corrosion resistant flat tube and a fin welded to the pitting corrosion resistant flat tube, because a zinc spray layer is not disposed on the surface of the pitting corrosion resistant flat tube, when the fin is welded to the pitting corrosion resistant flat tube, no zinc permeates into a solder at a welding position of the fin and the pitting corrosion resistant flat tube, after the welding of the fin and the pitting corrosion resistant flat tube is completed, a potential at the welding position of the fin and the pitting corrosion resistant flat tube is not lower than a potential of the fin, the solder at the welding position is not corroded in advance, that is, the fin and the pitting corrosion resistant flat tube do not fall off at the welding position, so that the potential of the fin can be effectively ensured to be always lower than the potential of the pitting corrosion resistant flat tube, thereby protecting the pitting corrosion resistant flat tube from corrosion by means of potential corrosion, the pitting corrosion resistant flat tube has strong corrosion resistance, and is not easily damaged by corrosion, the service life of the pitting corrosion resistant flat tube is prolonged, and the cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of flat tube and fin welding;
fig. 2 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;
fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Icon:
001-flat tube; 002-fins; 003-welding position; 004-solder; 100-pitting-resistant flat tube; 200-fins; 210-bending sections; 300-a first header; 400-second header; 500-a first joint; 600-second joint.
Detailed Description
At present, a flat tube 001 and a fin 002 of a heat exchanger are fixed into a whole in a welding mode. Meanwhile, in order to improve the corrosion resistance of the flat tube 001, before the flat tube 001 and the fin 002 are welded, the surface of the flat tube 001 needs to be subjected to zinc spraying treatment, so that a zinc spraying layer is formed on the surface of the flat tube 001. The designer discovers in the research, at flat pipe 001 and fin 002 welded in-process, zinc in the zinc-sprayed layer on the surface of flat pipe 001 permeates solder 004 at welding position 003, zinc also exists in the solder 004, thereby lead to the electric potential of solder 004 department to be lower than the electric potential of fin 002, in the heat exchanger use, solder 004 is compared fin 002 and is corroded more easily, also be that solder 004 is corroded in advance, flat pipe 001 and fin 002 drop off and separate at welding position 003, fin 002 does not contact with flat pipe 001, fin 002 can not play the effect of protection flat pipe 001, flat pipe 001 easily corrodes.
In view of this, a designer designs a heat exchanger, and the surface of the pitting corrosion resistant flat tube 100 is not provided with a zinc-sprayed layer, so that when the pitting corrosion resistant flat tube 100 is welded with the fin 200, zinc cannot permeate into the solder 004, the solder 004 cannot be corroded with the fin 200 first, the welding position 003 of the pitting corrosion resistant flat tube 100 and the fin 200 is not easy to fall off, and the fin 200 can better protect the pitting corrosion resistant flat tube 100.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, in the heat exchanger provided in the present embodiment, the pitting corrosion resistant flat tube 100 is directly welded to the fin 200, and the pitting corrosion resistant flat tube 100 is not provided with the zinc spraying layer, so that the pitting corrosion resistant flat tube 100 and the fin 200 are not easily detached from the welding position 003, and the pitting corrosion resistant flat tube 100 has a long service life.
In this embodiment, the heat exchanger includes a pitting corrosion resistant flat tube 100, and a zinc spray layer is not disposed on the outer surface of the pitting corrosion resistant flat tube 100;
and the fin 200, the fin 200 is welded with the pitting resistant flat tube 100.
In the heat exchanger provided by this embodiment, since the surface of the pitting corrosion resistant flat tube 100 is not provided with the zinc spray layer, when the fin 200 and the pitting corrosion resistant flat tube 100 are welded, no zinc permeates into the solder 004 at the welding position 003 of the fin 200 and the pitting corrosion resistant flat tube 100, after the welding of the fin 200 and the pitting corrosion resistant flat tube 100 is completed, the potential of the welding position 003 of the fin 200 and the pitting corrosion resistant flat tube 100 is not lower than the potential of the fin 200, and the solder 004 at the welding position 003 is not corroded in advance, that is, the fin 200 and the pitting corrosion resistant flat tube 100 are not dropped at the welding position 003, so that the potential of the fin 200 can be effectively ensured to be always lower than the potential of the pitting corrosion resistant flat tube 100, thereby protecting the pitting corrosion resistant flat tube 100 from corrosion by the potential corrosion, the pitting corrosion resistant flat tube 100 is strong in corrosion resistance and not easy to be damaged by corrosion, the service life of the pitting corrosion resistant flat tube 100 is prolonged, and the cost is reduced.
It should be noted that the flat tube 100 resistant to pitting corrosion is a flat tube made of a material resistant to pitting corrosion, for example, the flat tube 100 resistant to pitting corrosion may be made of the following materials:
0.05 to 0.15% by weight of silicon, 0.06 to 0.35% by weight of iron, 0.01 to 1.00% by weight of manganese, 0.02 to 0.60% by weight of magnesium, 0.05 to 0.70% by weight of zinc, 0 to 0.25% by weight of chromium, 0 to 0.20% by weight of zirconium, 0 to 0.25% by weight of titanium, 0 to 0.10% by weight of copper, up to 0.15% by weight of other impurities, each impurity not exceeding 0.03% by weight and the balance aluminium.
It should be understood that the pitting resistant flat tube 100 may also be made of other pitting resistant materials.
In this embodiment, optionally, resistant flat tub of pipe 100 that loses is the cuboid venturi tube, and resistant flat tub of pipe 100 that loses is inside to be equipped with a plurality of microchannels, and a plurality of microchannels are evenly spaced apart in resistant flat tub of 100 that loses's width direction and are arranged. The cross section of each micro-channel can be square, round, oval and the like, obviously, the micro-channel can be linearly extended along the length direction of the pitting resistant flat tube 100, and can also be zigzag or curve extended along the length direction of the pitting resistant flat tube 100. Meanwhile, both ends of the microchannel in the length direction thereof extend to both side surfaces of the pitting corrosion resistant flat tube 100 in the length direction, respectively.
The surface of the pitting corrosion resistant flat tube 100 is not provided with a zinc spray layer, and it can be understood that the outer surface of the pitting corrosion resistant flat tube 100 is not provided with a zinc spray layer, and the outer surface of the pitting corrosion resistant flat tube 100 comprises two length side surfaces and two thickness side surfaces. The two width sides of the pitting resistance flat tube 100 are not limited.
In other words, when the fin 200 is welded to the flat pitting resistance tube 100, the fin 200 is located on the length side of the flat pitting resistance tube 100, that is, the welding position 003 of the fin 200 to the flat pitting resistance tube 100 is located on the length side of the flat pitting resistance tube 100. The length side and the thickness side are not provided with the zinc spraying layer, so that zinc cannot permeate into the solder 004 during welding.
In this embodiment, optionally, the quantity of resistant flat pipe 100 that loses point can be many, and many resistant flat pipe 100 that loses point can arrange at the even interval in resistant flat pipe 100's of losing point thickness direction, is provided with fin 200 between arbitrary adjacent resistant flat pipe 100 that loses point, and fin 200 welds with adjacent resistant flat pipe 100 that loses point simultaneously.
In this embodiment, optionally, the fin 200 is a bent piece, and the fin 200 has at least one bent segment 210 in the extending direction thereof. The bending section 210 is in contact with the pitting resistant flat tube 100, and the two sides of the bending section 210 are provided with the solder 004 to improve the connection strength of the fin 200 and the pitting resistant flat tube 100.
Optionally, the fin 200 has a plurality of bending segments 210 in the extending direction thereof, and each fin 200 is connected to the anti-pitting flat tube 100 through at least one bending segment 210. Optionally, the bending sections 210 of the fins 200 in contact with the pitting corrosion resistant flat tubes 100 are all welded and fixed to the pitting corrosion resistant flat tubes 100.
In this embodiment, optionally, the heat exchanger further includes a first header 300, a second header 400, a first joint 500, and a second joint 600. First pressure manifold 300 and second pressure manifold 400 set up relatively, and many resistant flat pipe 100 that pitting corrodes all lie in between first pressure manifold 300 and the second pressure manifold 400, and every resistant flat pipe 100's of pitting corrosion both ends respectively with first pressure manifold 300 and second pressure manifold 400 cooperation of pegging graft, and first pressure manifold 300 communicates through resistant flat pipe 100 that pitting corrosion is resistant with second pressure manifold 400. The first header 500 and the second header 600 may be provided to the first header 300 or the second header 400 at the same time, or may be provided to the first header 300 and the second header 400 separately.
In this embodiment, optionally, the first collecting pipe 300 is provided with a first manifold and a second manifold which are independent from each other, and the first joint 500 and the second joint 600 are respectively communicated with the first manifold and the second manifold.
For example, the first joint 500 is a liquid inlet, the refrigerant enters the first manifold from the first joint 500, then enters the second manifold 400 from the flat tube 100 with pitting resistance communicated with the first manifold, and then enters the second manifold from the second manifold 400 through the flat tube 100 with pitting resistance communicated with the second manifold, and finally flows out from the second joint 600, so that the circulation flow of the refrigerant is completed.
Optionally, flat pipe grooves are formed in the first collecting pipe 300 and the second collecting pipe 400, the pitting corrosion resistant collecting pipe is in plug-in fit with the flat pipe grooves, and the pitting corrosion resistant flat pipe 100 is welded and fixed to the first collecting pipe 300 and the second collecting pipe 400 at the same time.
The heat exchanger that this embodiment provided, resistant pitting corrosion flat tube 100 surface does not set up spouts the zinc layer, and such design can guarantee that there is not the zinc infiltration entering in the solder 004 under the circumstances of guaranteeing resistant pitting corrosion flat tube 100 for solder 004 department potential can not be less than fin 200 potential, makes fin 200 can better protection resistant pitting corrosion flat tube 100.
The embodiment also provides a vehicle-mounted air conditioning system which comprises the heat exchanger mentioned in the embodiment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A heat exchanger, comprising:
the outer surface of the pitting corrosion resistant flat tube is not provided with a zinc spraying layer;
and the fins are welded with the pitting corrosion resistant flat tubes.
2. The heat exchanger of claim 1, wherein:
the pitting corrosion resistant flat tubes are arranged in a plurality of numbers, the pitting corrosion resistant flat tubes are arranged in the thickness direction of the pitting corrosion resistant flat tubes at intervals, the fins are arranged between the pitting corrosion resistant flat tubes and are randomly adjacent to each other, and the fins are welded with the adjacent pitting corrosion resistant flat tubes simultaneously.
3. The heat exchanger of claim 1, wherein:
the fin is followed the length direction of flat pipe extends, just the fin has at least one section of bending on the extending direction of self, the section of bending is in the ascending both sides of length direction of flat pipe all with flat pipe welding.
4. The heat exchanger of claim 2, wherein:
the fin has a plurality of sections of bending, every the section of bending all with resistant pitting corrosion flat tube welding.
5. The heat exchanger of claim 1, wherein:
the heat exchanger further comprises a first collecting pipe and a second collecting pipe, and two ends of the flat pipe are respectively connected with the first collecting pipe and the second collecting pipe in an inserting mode and communicated with each other.
6. The heat exchanger of claim 5, wherein:
the first collecting pipe and the second collecting pipe are respectively provided with a flat pipe groove, and two ends of each flat pipe are respectively inserted into the corresponding flat pipe grooves.
7. The heat exchanger of claim 5, wherein:
the heat exchanger also comprises a first joint and a second joint, and the first collecting pipe comprises a first manifold and a second manifold which are independent from each other; the first and second connectors communicate with the first and second manifolds, respectively.
8. The heat exchanger of claim 5, wherein:
the flat pipe is welded with the first collecting pipe and the second collecting pipe.
9. The heat exchanger of claim 1, wherein:
the flat pipe is provided with a plurality of micro-channels, each micro-channel extends along the length direction of the flat pipe, and two ends of each micro-channel respectively extend to two end faces of the flat pipe in the length direction; the micro channels are arranged at intervals in the width direction of the flat tubes.
10. An on-vehicle air conditioning system, characterized in that, the on-vehicle air conditioning system includes:
the heat exchanger of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022478987.1U CN213747386U (en) | 2020-10-30 | 2020-10-30 | Heat exchanger and vehicle-mounted air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022478987.1U CN213747386U (en) | 2020-10-30 | 2020-10-30 | Heat exchanger and vehicle-mounted air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213747386U true CN213747386U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022478987.1U Active CN213747386U (en) | 2020-10-30 | 2020-10-30 | Heat exchanger and vehicle-mounted air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213747386U (en) |
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2020
- 2020-10-30 CN CN202022478987.1U patent/CN213747386U/en active Active
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