CN216745668U - Fin structure and heat exchanger - Google Patents

Abstract

The utility model discloses a fin structure and heat exchanger, belong to heat exchanger technical field, fin structure and flat union coupling, including two row at least fins, two row at least fins set up side by side on the air current flow direction, be equipped with a plurality of flat tube grooves on every fin, flat tube insert locate in the flat tube groove, flat pipe on two adjacent rows of fins passes through the connecting pipe and connects, in order to form backflow channel, be equipped with the shutter between the adjacent flat tube groove on every fin, position department that corresponds at the shutter is equipped with the rib on the fin, in order to strengthen the intensity of fin, the position department that lies in the shutter and corresponds on the fin sets up the rib, with the intensity of the position department that the reinforcing shutter corresponds, and then guarantee the intensity of whole fin, make the fin can not break in heat exchanger equipment and use, reduce the equipment operation degree of difficulty, increase of service life.

Description

Fin structure and heat exchanger

Technical Field

The utility model relates to a heat exchanger technical field, concretely relates to fin structure and heat exchanger.

Background

The finned heat exchanger is one of the most widely used heat exchanger, and has fins mounted onto flat tubes to strengthen heat transfer. Specifically, a plurality of flat tube grooves are formed in the fins, the flat tubes are inserted into the flat tube grooves, in order to enhance the heat dissipation effect, shutters are arranged between the flat tube grooves, however, due to the existence of the shutters, the strength of the fins is greatly reduced, and the fins are easy to break at the positions of the shutters when being installed or used. Meanwhile, the existing fin type heat exchanger generally adopts a single row of fins, the heat exchange effect is poor, and the outflow temperature of the air flow after heat exchange is not uniform.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a fin structure and a heat exchanger with high strength and easy assembly.

A fin structure is connected with flat tubes and comprises at least two rows of fins, wherein the fins are arranged in parallel in the airflow flowing direction, a plurality of flat tube grooves are formed in each fin, the flat tubes are inserted in the flat tube grooves, the flat tubes on the fins are connected through connecting tubes to form a backflow channel, a louver is arranged between every two adjacent flat tube grooves on each fin, and reinforcing parts are arranged at positions, corresponding to the louvers, on the fins to reinforce the strength of the fins. The beneficial effect of this scheme of adoption: based on the problem of fin easy rupture in shutter position department among the prior art, in this scheme, the position department that lies in the shutter on the fin and corresponds sets up the rib to the intensity of the position department that the reinforcing shutter corresponds, and then guarantee the intensity of whole fin, make the fin can not break in heat exchanger equipment and use, reduce the equipment operation degree of difficulty, increase of service life.

Simultaneously, adopt two row at least fins in this scheme, all insert flat pipe on two row at least fins, two adjacent row flat pipe intercommunication form the return passage to the extension air current is at the mobile stroke on the fin, and the heat exchange is more deep, and the heat transfer effect is better, and the air current outflow temperature is more even.

In one embodiment, the reinforcement is provided on the louver in the airflow direction.

In one embodiment, along the airflow flowing direction, the fins comprise connecting portions and slotted portions, the flat tube grooves are formed in the slotted portions, the reinforcing portions comprise separating plates and reinforcing ribs, the separating plates are arranged on the louver along the airflow flowing direction and divide the louver into two symmetrical sections, and the reinforcing ribs extend to the separating plates from the connecting portions along the airflow flowing direction so as to guide airflow.

In one embodiment, the reinforcing rib extends from the connecting portion to a position of the partition plate away from the connecting portion.

In one embodiment, the reinforcing rib comprises a windward end and a leeward end, the windward end and the leeward end are sequentially distributed along the airflow flowing direction, and the leeward end is of an arc-shaped structure.

In one embodiment, the partition plate is further provided with a turbulent flow part, and the reinforcing rib and the turbulent flow part enclose a turbulent flow cavity.

In one embodiment, the partition plate is provided with at least two reinforcing ribs, the turbulent flow portion is perpendicular to the flowing direction of the airflow, a gap is formed between the at least two reinforcing ribs and the turbulent flow portion, the reinforcing ribs guide the airflow to the turbulent flow portion, and the turbulent flow portion blocks the airflow so that the airflow stays in the turbulent flow cavity and then flows out from the gap.

In one embodiment, the fin comprises a connecting part and a slotted part along the airflow flowing direction, the flat tube slot is arranged at the slotted part, the reinforcing part is arranged on the connecting part, and the orthographic projection of the louver on the connecting part falls into the orthographic projection range of the reinforcing part on the connecting part.

In one embodiment, the louver comprises a frame extending along the airflow flowing direction, and a lug is arranged on the reinforcing part at a position corresponding to the frame and protrudes towards the louver.

In one embodiment, the cross section of the connecting part along the airflow flowing direction is of a corrugated structure.

In one embodiment, the connection tube includes a semicircular connection tube and a C-shaped connection tube.

In one embodiment, at least two rows of the fins are sequentially arranged in the same direction.

The utility model discloses another technical scheme as follows:

a heat exchanger comprising the fin structure of any one of the above technical aspects.

Drawings

The utility model is further described with the following drawings:

do the utility model discloses the inside spatial structure schematic diagram of heat exchanger.

Fig. 1 is a schematic view of the three-dimensional structure of the two rows of fins of the present invention arranged side by side.

Fig. 2 is a schematic structural diagram of a heat exchange unit according to an embodiment of the present invention.

Fig. 3 is another schematic structural diagram of a heat exchange unit according to an embodiment of the present invention.

Fig. 4 is an assembly schematic diagram of a single fin and a flat tube according to an embodiment of the present invention.

Fig. 5 is a top view of the single row of fins of the present invention.

Fig. 6 is an assembly schematic view of a single fin and a flat tube according to an embodiment of the present invention.

Fig. 7 is the utility model discloses a two rows of fins and flat tub of assembly schematic diagrams.

Fig. 8 is a schematic view of the U-shaped connecting pipe of the present invention.

Fig. 9 is a schematic view of the structure of the C-shaped connecting pipe of the present invention.

Reference numerals:

100. a fin; 100a, front row of fins; 100b, rear row fins; 110. a connecting portion; 110a, windward side; 111. a flat pipe groove; 112. a heat exchange unit; 113. a blind window; 1131. an opening; 1131a, upper frame; 1131b, a lower frame; 1132. louver blades; 1133. a gap; 114. a flanging structure; 120. grooving part; 120a, leeward side; 130. a reinforcing portion; 131. a partition plate; 132. reinforcing ribs; 132a, windward end; 132b, leeward end; 140. a spoiler portion; 150. a flow-disturbing cavity; 160. a bump; 200. flat tubes; 300. and (4) connecting the pipes.

Detailed Description

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 according to specific situations by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model discloses use air conditioning system's heat exchanger to explain as the example, but technical personnel in the field can understand, the utility model discloses also can be applicable to on other fin formula indirect heating equipment.

The main components of the air conditioning system comprise a compressor, a condenser, a throttling device and a heat exchanger, the heat exchanger plays a role of heat exchange with the outside, the existing heat exchanger comprises a fin 100 and a plurality of flat tubes 200, a plurality of flat tube grooves 111 are formed in the side face of the fin 100, the flat tube grooves 111 are distributed at intervals along the length direction of the fin 100, and the flat tubes 200 are correspondingly inserted into the flat tube grooves 111 one by one.

Heat exchangers in the prior art generally use single-row fins 100, and single-row fins 100 are inserted on single-row fins 100 to establish flat tubes 200, and the heat transfer effect is relatively poor, and airflow outflow temperature is inhomogeneous after the heat transfer.

Therefore, referring to fig. 1 and 7, the fin structure in this embodiment includes at least two rows of fins 100, the at least two rows of fins 100 are arranged in parallel in the airflow flowing direction, each fin 100 is provided with a plurality of flat tube grooves 111, the flat tubes 200 are inserted into the flat tube grooves 111, the flat tubes 200 on two adjacent rows of fins 100 are connected by a connecting tube 300, as shown in fig. 8 and 9, the connecting tube 300 is preferably a semicircular connecting tube or a C-shaped connecting tube to form a backflow channel, a medium flowing in one row of flat tubes 200 enters the other row of flat tubes 200 through the connecting tube 300, airflow flows over the at least two rows of fins 100, the flowing stroke is increased, heat exchange is deeper, the heat exchange effect is better, the airflow outflow temperature is also more uniform, and the user experience is improved.

Along the air flow direction, fin 100 includes connecting portion 110 and fluting portion 120, and flat tub 111 is seted up in fluting portion 120 department, and flat tub 111 is inwards seted up by the side that connecting portion 110 was kept away from by fluting portion 120 to form the notch at the side of connecting portion 110. The fin 100 is provided with a flanging structure 114 at the position of the flat tube slot 111, and the flanging structure 114 is arranged near the flat tube slot 111 and abuts against the side wall of the flat tube 200. The arrangement of the flanging structure 114 can enhance the welding strength of the flat pipe 200.

Heat exchange units 112 are formed between the adjacent flat tube grooves 111, and the heat exchange units 112 are connected through connecting parts 110 to form an integral fin 100.

Preferably, at least two rows of fins 100 are sequentially arranged in a forward direction, that is, two adjacent rows of fins 100, and the connecting portion 110 of the rear row of fins 100b abuts against the slotted portion 120 of the front row of fins 100a, during assembly, each row of fins 100 is respectively inserted into the flat tubes 200 and then sequentially arranged, so that a proper number of rows can be selected according to heat exchange needs and heat exchanger sizes, and meanwhile, the connecting portion 110 of the rear row of fins 100b abuts against the flat tubes 200 of the front row of fins 100a and can also exchange heat with the flat tubes 200 of the front row, thereby further improving the heat exchange effect. Preferably, the flat tubes 200 on two adjacent rows of fins 100 are arranged in a staggered manner, so that heat dissipation is performed by utilizing all parts on the fins 100 to the maximum extent, heat exchange is performed, and the heat exchange effect is improved. The "front" and "rear" orientations of the present embodiment are shown in FIG. 1.

In order to enlarge the heat exchange area and improve the heat exchange effect, as shown in fig. 5, the connection portion 110 is a corrugated structure, which includes peaks and valleys, and the peaks and the valleys both extend along the length direction of the fin 100, so that the cross section of the connection portion 110 along the width direction is corrugated, and the strength of the connection portion 110 in the length direction and the thickness direction is enhanced by the corrugated structure, thereby improving the stability of the heat exchanger. Meanwhile, the corrugated structure forms a drainage part to discharge condensed water of the air flow on the fin 100, so that the drainage is smoother, thereby improving the performance of the heat exchanger and improving the heat exchange efficiency.

For convenience of description, the airflow flowing direction is defined in the present embodiment to be along the width direction of the fin 100, and the airflow flowing direction is perpendicular to the length direction of the fin 100. Meanwhile, it is defined that the airflow flowing direction from the connecting portion 110 to the slotted portion 120 is from the windward side 110a to the side of the connecting portion 110 far away from the slotted portion 120, and from the leeward side 120a to the side of the slotted portion 120 far away from the connecting portion 110. The direction of the single arrow in fig. 1 and 5 is the airflow direction. Of course, in other embodiments, the gas flow direction may also flow from the slotted portion 120 to the connecting portion 110, that is, the side of the slotted portion 120 away from the connecting portion 110 is the windward side 110a, and the side of the connecting portion 110 away from the slotted portion 120 is the leeward side 120 a.

In order to enhance the heat dissipation effect of the fin 100, louvers 113 are disposed between the flat tube slots 111, each louver 113 includes an opening 1131 and a plurality of louvers 1132 disposed in the opening 1131, the plurality of louvers 1132 are arranged along the gas flow direction, each louver 1132 is disposed in an inclined manner relative to the surface of the fin 100, and a gap 1133 is disposed between adjacent louvers 1132, so as to enhance the heat exchange effect. However, the presence of the louvers 113 greatly reduces the strength of the fin 100, making it easier for the fin 100 to break at the location of the louvers 113 during installation or use.

In order to solve the above problem, referring to fig. 8, in the present embodiment, the fin 100 is provided with the reinforcing portion 130 at the position corresponding to the louver 113, so as to enhance the strength at the position corresponding to the louver 113, thereby ensuring the strength of the entire fin 100, preventing the fin 100 from being broken during the assembling and using processes of the heat exchanger, reducing the difficulty of the assembling operation, and prolonging the service life.

Referring to fig. 6, according to an embodiment of the present invention, the reinforcement 130 is disposed on the louver 113 along the airflow direction to enhance the strength of the position of the louver 113, thereby enhancing the strength of the whole fin 100 and enhancing the compression resistance, impact resistance and bending resistance of the fin 100 in all directions.

As shown in fig. 2 to 4 and 6, the reinforcing portion 130 includes a partition plate 131 and a rib 132, the rib 132 preferably has a trapezoidal cross section, the partition plate 131 is disposed on the louver 113 along the airflow flowing direction and divides the louver 113 into two symmetrical sections, and the rib 132 extends from the connecting portion 110 to the partition plate 131 along the airflow flowing direction to guide the airflow.

Of course, the cross-section of the rib 132 may be a V-shaped or semicircular rib 132.

The strength of the middle position of the louver 113 is weakest and the louver 113 is most easily broken during assembly, the partition plate 131 is arranged in the middle of the louver 113 to divide the louver 113 into two symmetrical sections along the length direction so as to improve the strength of the weakest position of the fin 100, and the reinforcing ribs 132 are arranged on the partition plate 131 to further improve the strength of the middle position of the louver 113 and further reduce the possibility of breaking the louver 113. The partition plate 131 and the reinforcing ribs 132 are preferably made of the same material as the fins 100, and also have heat conductivity to form a part of the fins 100, thereby improving the heat conduction effect of the fins 100.

Meanwhile, as shown in fig. 2 to 4, the reinforcing ribs 132 extend from the connecting portion 110 to the partition plate 131 to smoothly flow the air flow on the windward side 110a of the connecting portion 110 into the connecting portion 110 and the grooved portion 120 as much as possible, so that the air flow flows orderly and performs heat exchange, thereby enhancing the heat exchange effect and improving the user experience.

Preferably, the reinforcing ribs 132 extend from the connecting portion 110 to a position where the separating plate 131 is far away from the connecting portion 110, and the length of the reinforcing ribs 132 is increased as much as possible, so that the air flow after heat exchange at the front row fins 100a is smoothly guided to the rear row fins 100b, and finally guided out of the heat exchanger, thereby ensuring the air flow and enhancing the heat exchange effect.

As shown in fig. 2, the reinforcing rib 132 includes a windward end 132a and a leeward end 132b, the windward end 132a is close to the windward side 110a of the fin 100, the leeward end 132b is close to the leeward side 120a of the fin 100, and preferably, the leeward end 132b is configured in an arc structure, so that the airflow is concentrated toward the middle of the leeward end 132b along the arc structure to form a concentrated airflow, which is more beneficial for guiding the rear row of fins 100 b. Of course, in other embodiments, the leeward end 132b may have other shapes, such as square, triangular, etc.

One reinforcing part 130 may be provided on the louver 113, or a plurality of reinforcing parts 130 may be provided, and a technician may select the reinforcing part according to the heat dissipation and strength requirements.

Referring to fig. 6, according to an embodiment of the present invention, a spoiler 140 is further disposed on the partition plate 131, and the reinforcing rib 132 and the spoiler 140 define a spoiler cavity 150. Specifically, two reinforcing ribs 132 are arranged on the partition plate 131, the two reinforcing ribs 132 extend along the width direction of the fin 100, the two reinforcing ribs 132 are distributed at intervals along the length direction of the fin 100, the turbulent portion 140 is perpendicular to the airflow flowing direction, namely, the turbulent portion 140 extends along the length direction of the fin 100, so that the turbulent portion 140 is perpendicular to the two reinforcing ribs 132 and surrounds into a turbulent chamber 150, a gap 170 is formed between the two reinforcing ribs 132 and the turbulent portion 140, and the airflow flows out from the gap 170.

Strengthening rib 132 leads vortex portion 140 with the air current, and be blockked by vortex portion 140, be detained in vortex chamber 150, the dwell time of air current on fin 100 has been increased, the reinforcing heat transfer effect, and simultaneously, the air current that the different positions flowed in earlier and later mixes the back in vortex chamber 150, airflow temperature is more even, flow out by space 170, the temperature that gets into the air current of back row fin 100b is also more even, the temperature that finally flows out the heat exchanger also can be more even, promote user experience and feel.

Of course, the number of the ribs 132 is not limited to two, and may be three or more to form two or more turbulent flow chambers 150, and the skilled person may select the number according to the size of the fin 100.

Referring to fig. 7, according to an embodiment of the present invention, the reinforcement portion 130 may also be disposed on the connection portion 110, and an orthographic projection of the louver 113 on the connection portion 110 falls within an orthographic projection range of the reinforcement portion 130 on the connection portion 110. The reinforcing portion 130 is preferably a rib 132, and more specifically, the rib 132 extends in the longitudinal direction of the fin 100 on the connecting portion 110, the upper end of the rib 132 is higher than the upper frame 1131a of the louver 113, and the lower end of the rib 132 is lower than the lower frame 1131b of the rib 132, so that the strength of the fin 100 in the longitudinal direction and the thickness direction of the louver 113 is increased, and the rib 113 is not easily broken when subjected to a pressure in the longitudinal direction or an impact in the thickness direction. Meanwhile, the reinforcing ribs 132 also enhance the strength in the width direction at the connection portion 110.

Of course, in the gas embodiment, the reinforcing portion 130 is not limited to the rib 132, and may be other reinforcing portions to increase the strength.

Since the frame of the louver 113 has stress concentration and is easily broken, as shown in fig. 7, a protrusion 160 is provided at a position corresponding to the frame on the reinforcing rib 132, and the protrusion 160 protrudes toward the louver 113, so as to further enhance the strength of the frame and prevent the fin 100 from being broken at the position.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above description is only for the embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the description in the above embodiments and the accompanying drawings. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the claims.

Claims (13)

1. The fin structure is connected with flat tubes (200), and is characterized by comprising at least two rows of fins (100), wherein the fins (100) are arranged in parallel in the airflow flowing direction and comprise at least two rows of fins (100), the fins (100) are arranged in parallel in the airflow flowing direction, each fin (100) is provided with a plurality of flat tube grooves (111), the flat tubes (200) are inserted into the flat tube grooves (111), two adjacent rows of the flat tubes (200) on the fins (100) are connected through connecting tubes (300) to form a backflow channel, each fin (100) is provided with a louver (113) between the adjacent flat tube grooves (111), and the fins (100) are provided with reinforcing parts (130) at positions corresponding to the louver (113) to reinforce the strength of the fins (100).

2. The fin structure according to claim 1, wherein the reinforcing portion (130) is provided on the louver (113) in an airflow flowing direction.

3. The fin structure according to claim 2, wherein the fin (100) includes a connecting portion (110) and a grooved portion (120) in an airflow flowing direction, the flat tube groove (111) is opened at the grooved portion (120), the reinforcing portion (130) includes a partition plate (131) and a reinforcing rib (132), the partition plate (131) is provided on the louver (113) in the airflow flowing direction and extends the louver (113), and the reinforcing rib (132) extends from the connecting portion (110) to the partition plate (131) in the airflow flowing direction to guide the airflow.

4. The fin structure according to claim 3, wherein the reinforcing rib (132) extends from the connecting portion (110) to a position where the partition plate (131) is away from the connecting portion (110).

5. The fin structure according to claim 4, wherein the reinforcing rib (132) comprises a windward end (132a) and a leeward end (132b), the windward end (132a) and the leeward end (132b) are sequentially distributed along the airflow flowing direction, and the leeward end (132b) is in a circular arc structure.

6. The fin structure according to claim 3, wherein a spoiler portion (140) is further provided on the partition plate (131), and the reinforcing ribs (132) and the spoiler portion (140) enclose a spoiler cavity (150).

7. The fin structure according to claim 6, wherein at least two reinforcing ribs (132) are arranged on the partition plate (131), the spoiler portion (140) is perpendicular to the flow direction of the air flow, a gap (1133) is arranged between at least two reinforcing ribs (132) and the spoiler portion (140), the reinforcing ribs (132) guide the air flow to the spoiler portion (140), and the spoiler portion (140) blocks the air flow so that the air flow flows out from the gap (1133) after being retained in the spoiler cavity (150).

8. The fin structure according to claim 2, wherein the fin (100) includes a connecting portion (110) and a grooved portion (120) in an airflow flowing direction, the flat tube groove (111) is opened at the grooved portion (120), the reinforcing portion (130) is provided on the connecting portion (110), and an orthographic projection of the louver (113) on the connecting portion (110) falls within an orthographic projection range of the reinforcing portion (130) on the connecting portion (110).

9. The fin structure according to claim 8, wherein the louver (113) includes a rim extending in the airflow flowing direction, and a protrusion (160) is provided on the reinforcing portion (130) at a position corresponding to the rim, the protrusion (160) protruding toward the louver (113).

10. Fin structure according to any of claims 3 to 9, characterized in that the cross section of the connection (110) in the direction of flow of the air flow is of a corrugated structure.

11. Fin structure according to any of claims 1 to 9, characterized in that at least two rows of said fins (100) are arranged in sequence in a forward direction.

12. The fin structure according to any one of claims 1 to 9, wherein the connection pipe (300) includes a semicircular connection pipe and a C-shaped connection pipe.

13. A heat exchanger comprising the fin structure according to any one of claims 1 to 12.

Images