CN208983917U - Heat exchanger tube and air conditioner - Google Patents

Abstract

This application provides a kind of heat exchanger tube and air conditioners.Heat exchanger tube includes tube body and the fin that is arranged on the outer surface of tube body, is formed with channel between adjacent fin.Connectivity slot is offered on fin, adjacent channel is connected to by connectivity slot, and connectivity slot is for the refrigerant that circulates.Adjacent channel can be made to be connected to by the connectivity slot opened up on fin using the technical solution of the utility model, increase the passing away area of liquid refrigerants after condensation, enhanced refrigerant discharge ability, refrigerant can preferably be circulated on the surface of heat exchanger tube.And then excessive, increase thermal resistance reduction heat exchange efficiency can be increased in the surface thickness of heat exchanger tube to avoid liquid refrigerants.

Description

Heat exchanger tube and air conditioner

Technical field

The utility model relates to refrigeration technology fields, in particular to a kind of heat exchanger tube and air conditioner.

Background technique

In air-conditioning and refrigeration industry, for water cooled condenser because compact-sized, applicability is broad, is developed rapidly. Efficiently, the substitution of energy conservation and new cooling media is still current main research direction.Water-cooled heat exchanger is mostly horizontal shell and tube type Heat exchanger walks freon in shell side, leakes water in tube side.And within the condenser, exchanging heat on it influences a bigger factor just It is the superiority and inferiority of the performance of heat exchanger tube in shell.Inside shell side, the refrigerant on the outside of condenser pipe, which is undergone phase transition, to exchange heat, and refrigerant exists The outer condensation of pipe forms liquid film and is covered on heat exchange pipe surface, and the presence of the liquid film increases the thermal resistance of medium side, passes through increase in pipe Disturbance exchanges heat.So thermal resistance distribution is primarily present outside pipe, principle is strengthened according to weak side, is seemed especially to carrying out strengthening outside pipe It is important, pipe external thermal resistance should be reduced to greatest extent improves heat exchange property.

For strengthening outside condenser pipe pipe, existing general reinforcing is squeezed out outside pipe by gang tool along pipe circumference spiral shell The pipe of the metal fin of expansion is revolved, and carries out secondary rolled on fin, forms boss and sharp wedge angle.It is mainly strengthened Mechanism is the surface area for being to increase outside pipe, using the boss formed and sharp wedge angle and radius of curvature difference, is made thinner Liquid film reduces thermal resistance.And lower layer's fin spiral is connected, and forms channel.Liquid refrigerants is drained.It forms by means of which Image strip and sharp wedge angle are made thinner liquid film, the boss being formed simultaneously, and also increase the drippage of liquid film and the resistance of exclusion simultaneously.

Efficient pipe single-pipe heat-transfer experimental studies have found that, condenser pipe in condensation process, steam state refrigerant condensation pipe surface into Row condensation, condense later channel of the liquid refrigerants of formation between pipe fin flow to condenser pipe in the following, and along fin with Drain in the channel formed between fin.And traditional condenser pipe is in strengthening condensation process, what is formed between fin and fin is logical Road, along axial connection in spiral distribution, interconnection fails connection in lower part.So condensing the liquid refrigerants formed with cold The reinforcement of solidifying intensity, liquid refrigerants thickness are increasing, and thermal resistance also can be with further increasing.When serious, liquid refrigerants meeting Liquid flooding is formed in heat exchange pipe surface, effective heat exchange area is reduced, condensation effect is caused to decay.

Utility model content

The utility model embodiment provides a kind of heat exchanger tube and air conditioner, is being used with solving heat exchanger tube in the prior art When the existing liquid refrigerants technical problem obvious in surface Concerning Flooding Phenomenon.

The application embodiment provides a kind of heat exchanger tube, including tube body and the fin being arranged on the outer surface of tube body, phase It is formed with channel between adjacent fin, connectivity slot is offered on fin, adjacent channel is connected to by connectivity slot, and connectivity slot is for flowing Logical refrigerant.

Further, circumferencial direction of the fin on the outer surface along outer surface coils setting, and connectivity slot is on fin along outer The axial direction on surface opens up.

Further, fin coiling setting in the shape of a spiral on the outer surface.

Further, fin is a plurality of, and a plurality of fin is spaced setting on the outer surface.

Further, connectivity slot depth on fin opens up the bottom of fin, or opens up apart from the bottom of fin The position of predetermined length.

Further, connectivity slot is multiple, and multiple connectivity slots are spaced setting on fin.

Further, extending direction angled β setting of the connectivity slot relative to fin, 0 ° of β≤90 ° <.

Further, the section of connectivity slot is V-shaped, U-shaped or Y shape.

Further, boss structure is suppressed on fin, boss structure is used to increase the surface area of fin.

Further, boss structure includes protruding positioned at the concave part at top of fin and the side relative to fin Corner.

Further, extending direction angled α setting of the boss structure relative to fin, 15 °≤α≤65 °.

Further, internal rib formations are formed on the inner surface of tube body, internal rib formations are used to increase the surface area of inner surface.

Further, internal rib formations are arranged on an internal surface in the shape of a spiral, and internal rib formations are in angle relative to the center of tube body It spends λ to be arranged, 15 °≤λ≤60 °.

Further, the section of internal rib formations is trapezoidal or triangle.

Present invention also provides a kind of air conditioner, including heat exchanger tube, heat exchanger tube is above-mentioned heat exchanger tube.

In the above-described embodiments, by the connectivity slot opened up on fin, adjacent channel can be made to be connected to, increased solidifying The passing away area of liquid refrigerants after knot, enhance refrigerant discharge ability, allow refrigerant can the surface of heat exchanger tube preferably Circulation.In turn, it can increase excessively to avoid liquid refrigerants in the surface thickness of heat exchanger tube, the surface of heat exchanger tube is avoided liquid flooding occur Phenomenon guarantees effective heat exchange area, increases heat transfer effect.

Detailed description of the invention

The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing In:

Fig. 1 is the overall structure diagram of the embodiment of heat exchanger tube according to the present utility model；

Fig. 2 is the partial structural diagram of the heat exchanger tube of Fig. 1；

Fig. 3 is the partial enlargement structural representation of Fig. 2；

Fig. 4 is the overlooking structure diagram of Fig. 3；

Fig. 5 is the schematic view of the front view of Fig. 3；

Fig. 6 is the right side structural representation of Fig. 3；

Fig. 7 is the schematic cross-sectional view of the heat exchanger tube of Fig. 6.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached Figure, is described in further details the utility model.Here, the exemplary embodiment and its explanation of the utility model are for solving The utility model is released, but is not intended to limit the scope of the present invention.

Fig. 1 shows the embodiment of the heat exchanger tube of the utility model, which includes tube body 10 and be arranged in tube body 10 Outer surface 11 on fin 20, be formed with channel 30 between adjacent fin 20.Connectivity slot 21 is offered on fin 20, is connected to Adjacent channel 30 is connected to by slot 21, and connectivity slot 21 is for the refrigerant that circulates.

Adjacent lead to can be made by the connectivity slot 21 opened up on fin 20 using the technical solution of the utility model Road 30 is connected to, and increases the passing away area of liquid refrigerants after condensation, enhances refrigerant discharge ability, refrigerant can changed It preferably circulates on the surface of heat pipe.In turn, it can increase excessively to avoid liquid refrigerants in the surface thickness of heat exchanger tube, avoid exchanging heat There is Concerning Flooding Phenomenon in the surface of pipe, guarantees effective heat exchange area, increases heat transfer effect.

Optionally, in the technical scheme of this embodiment, as shown in Fig. 2, fin 20 on outer surface 11 along outer surface 11 Circumferencial direction coil setting, axial direction of the connectivity slot 21 on fin 20 along outer surface 11 open up.On it should be noted that The circumferencial direction coiling setting along outer surface 11 is stated, the radial direction setting along outer surface 11 is can be, is also possible to edge and diameter It is arranged to the direction of direction at an angle；The above-mentioned axial direction along outer surface 11 opens up, also referred to as in the axial direction It is upper or be connected to adjacent channel 30 on the direction of axial direction at an angle.

In the technical scheme of this embodiment, as depicted in figs. 1 and 2, fin 20 coils in the shape of a spiral on outer surface 11 Setting.As other optional embodiments, fin 20 be it is a plurality of, a plurality of fin 20 is spaced setting on outer surface 11, i.e., The fin 20 of a plurality of annular is arranged on outer surface 11.

As shown in Figure 3 and Figure 6, in the technical scheme of this embodiment, the section of connectivity slot 21 is Y shape, and connectivity slot 21 exists Depth on fin 20 opens up the position of the bottom predetermined length apart from fin 20.As other optional embodiments, It is also feasible that the depth on fin 20 of connectivity slot 21, which opens up the bottom of fin 20,.It should be noted that connectivity slot 21 is in wing The depth opened up on piece 20, on the basis of guaranteeing the stress intensity of fin 20, it may be that more deeper better.

In addition, the section of connectivity slot 21 can be with V-shaped or U-shaped as other optional embodiments.

Preferably, in the technical scheme of this embodiment, connectivity slot 21 is multiple, between multiple connectivity slots 21 are on fin 20 Every setting.By the way that multiple connectivity slots 21 are arranged, it can further strengthen refrigerant discharge ability, allow refrigerant can be in heat exchanger tube It preferably circulates on surface.It is found through experiments that, the connectivity slot 21 of uniformly distributed quantity 30~100 is carried out along the circumferencial direction of fin 20 Good refrigerant discharge ability can be played.

Optionally, as shown in Figure 3 and Figure 4, extending direction angled β setting of the connectivity slot 21 relative to fin 20,0 ° of < β ≤90°.Due in the technical scheme of this embodiment, coiling setting in the shape of a spiral on 20 outer surface 11 of fin allows connectivity slot 21 Relative to the angled setting of fin 20, it is also beneficial to refrigerant and circulates in the axial direction.In addition, allowing connectivity slot 21 relative to fin 20 extending direction is vertically also feasible.

As shown in Figure 3 and Figure 5, as a preferred embodiment, being suppressed with boss structure 22 on fin 20.Boss knot Structure 22 is used to increase the surface area of fin 20, and heat exchange efficiency can be improved in heat exchange.As shown in Figure 5 and Figure 6, in the present embodiment Technical solution in, boss structure 22 includes the concave part 221 positioned at the top of fin 20 and side relative to fin 20 The corner 222 of protrusion increases and enhances the sharp wedge angle of condensation pipe surface in this way while increasing heat exchange area, Using the big feature in corner 222 and 221 corner curvature of concave part, refrigerant liquid film of making thinner, to enhance partial condensation condensation Ability plays and strengthens the liquid film thickness for being thinned and being adhered on condensation pipe surface fin when refrigerant vapour condensation on condenser pipe upper layer The ability of degree.

As shown in figure 4, in the technical scheme of this embodiment, boss structure 22 is in angle relative to the extending direction of fin 20 It spends α to be arranged, 15 °≤α≤65 °.Similarly, due in the technical scheme of this embodiment, on 20 outer surface 11 of fin in the shape of a spiral Coiling setting, allows boss structure 22 relative to the angled setting of fin 20, is also beneficial to refrigerant and circulates in the axial direction heat exchange.

Specifically, in the technical scheme of this embodiment, the formation of concave part 221 is using annular knurl mold in original fin Top is extruded from, and forming depth is 0.1~0.45mm, and width is the concave part structure of 0.01~0.35mm.It is being formed While concave part 221, due to the good plasticity of metal material itself, in 20 two sides self-assembling formation of fin, two corners 222, 222 structure of corner extends the length of protrusion to 20 side of fin as 0.05~0.2mm.

As shown in Figure 1 and Figure 7, in the technical scheme of this embodiment, internal rib formations are formed on the inner surface of tube body 10 40.When in use, internal rib formations 40 are used to increase the surface area of inner surface, heat exchange efficiency can be improved in heat exchange, simultaneously also The level of disruption of tube fluid is increased, so as to further enhance heat exchange efficiency.

Optionally, in the technical scheme of this embodiment, internal rib formations 40 are arranged on an internal surface in the shape of a spiral, internal-rib knot Center angled λ setting of the structure 40 relative to tube body 10,15 °≤λ≤60 °.Optionally, internal rib formations 40 are a plurality of, a plurality of interior Rib structure 40 is uniformly distributed on an internal surface.Preferably, internal rib formations 40 are 10~80.

Specifically, in the technical scheme of this embodiment, being rolled into spiral in the lining core of the inner surface indent of tube body 10 The raised internal rib formations 40 of shape.Center angled λ setting of the internal rib formations 40 relative to tube body 10, while internal rib formations 40 are opposite The height of projection of inner surface is 0.2~0.60mm.

As shown in Fig. 2, in the technical scheme of this embodiment, the section of internal rib formations 40 is trapezoidal, the cross sectional shape Internal rib formations 40 are more convenient for processing, and exchange capability of heat is also preferable.Preferably, the bottom of internal rib formations 40 and inner surface are integral, and It is in rounding off with inner surface, two apex angles are in rounding off.As other optional embodiments, the section of internal rib formations 40 is also It can be triangular in shape.

In the technical solution of the utility model, above-mentioned heat exchanger tube be processed in dedicated fin machining equipment and At using extrusion forming ELEMENTARY INTRODUCTION TO NON technique.Present case uses outer diameter 19.05mm, and light pipe wall thickness is that 1.1mm main pipe is added Work.Pipe is outer to be rolled into groove using with groove mold in main pipe, is squeezed, is formed using groove of the gang tool to formation Along the independent fin of axial screw, because of the deformation that processing fin generates on independent fin, and connectivity slot is formed.Fin top is same Shi Caiyong annular knurl mold carries out secondary extrusion to independent fin top and forms boss structure.Internal rib formations 40 strengthen synchronous progress, While squeezing outer surface using gang tool, inside is formed using synchronous squeeze of lining core of bull with groove structure.

It should be noted that the technical solution of above-mentioned heat exchanger tube is particularly suitable for condenser pipe.

The utility model additionally provides a kind of air conditioner, which includes above-mentioned heat exchanger tube.Using above-mentioned heat exchanger tube Air conditioner, heat exchange property is more preferable, and refrigerating efficiency is higher.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, the utility model embodiment can have various modifications and variations.All spirit in the utility model Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.

Claims (15)

1. a kind of heat exchanger tube, including tube body (10) and the fin (20) being arranged on the outer surface (11) of the tube body (10), phase Channel (30) are formed between the adjacent fin (20), which is characterized in that connectivity slot (21) are offered on the fin (20), The adjacent channel (30) is connected to by the connectivity slot (21), and the connectivity slot (21) is for the refrigerant that circulates.

2. heat exchanger tube according to claim 1, which is characterized in that the fin (20) is on the outer surface (11) along institute The circumferencial direction coiling setting of outer surface (11) is stated, the connectivity slot (21) is on the fin (20) along the outer surface (11) Axial direction open up.

3. heat exchanger tube according to claim 2, which is characterized in that the fin (20) is in spiral shell on the outer surface (11) Revolve shape coiling setting.

4. heat exchanger tube according to claim 2, which is characterized in that the fin (20) is a plurality of, a plurality of fin (20) setting is spaced on the outer surface (11).

5. heat exchanger tube according to claim 1, which is characterized in that the connectivity slot (21) depth on the fin (20) The bottom of the fin (20) is opened up, or opens up the position of the bottom predetermined length apart from the fin (20).

6. heat exchanger tube according to claim 1, which is characterized in that the connectivity slot (21) is multiple, multiple connections Slot (21) is spaced setting on the fin (20).

7. heat exchanger tube according to claim 1, which is characterized in that the connectivity slot (21) is relative to the fin (20) The angled β setting of extending direction, 0 ° of β≤90 ° <.

8. heat exchanger tube according to claim 1, which is characterized in that the section of the connectivity slot (21) is V-shaped, U-shaped or Y Shape.

9. heat exchanger tube according to claim 1, which is characterized in that boss structure (22) are suppressed on the fin (20), The boss structure (22) is used to increase the surface area of the fin (20).

10. heat exchanger tube according to claim 9, which is characterized in that the boss structure (22) includes being located at the fin (20) corner (222) of the concave part (221) at top and the side protrusion relative to the fin (20).

11. heat exchanger tube according to claim 9, which is characterized in that the boss structure (22) is relative to the fin (20) the angled α setting of extending direction, 15 °≤α≤65 °.

12. heat exchanger tube according to claim 1, which is characterized in that be formed with internal-rib on the inner surface of the tube body (10) Structure (40), the internal rib formations (40) are used to increase the surface area of the inner surface.

13. heat exchanger tube according to claim 12, which is characterized in that institute is arranged in the internal rib formations (40) in the shape of a spiral It states on inner surface, center angled λ setting of the internal rib formations (40) relative to the tube body (10), 15 °≤λ≤60 °.

14. heat exchanger tube according to claim 12, which is characterized in that the section of the internal rib formations (40) is trapezoidal or three It is angular.

15. a kind of air conditioner, including heat exchanger tube, which is characterized in that the heat exchanger tube is described in any one of claims 1 to 14 Heat exchanger tube.