CN213208036U - Outdoor unit of air conditioner - Google Patents

Abstract

The utility model discloses an outdoor unit of air conditioner, the finned tube heat exchanger that sets up in it forms airflow channel including a plurality of fins of parallel arrangement and the heat pipe that link up a plurality of fins between two adjacent fins. The fin is provided with a round hole flanging part, the heat conduction pipe penetrates through the round hole flanging part, a flow guide ring groove is annularly arranged on the periphery of the round hole flanging part, and the inner drainage part is communicated with two flow guide ring grooves which are adjacent in the vertical direction. Through the cooperation of water conservancy diversion annular and interior drainage part, reduce the gathering of comdenstion water in round hole turn-ups department, realize improving finned tube heat exchanger's heat exchange efficiency, the purpose that improves the air conditioner efficiency.

Description

Outdoor unit of air conditioner

Technical Field

The utility model relates to an air conditioning technology field especially relates to an air conditioner outdoor unit, and the drainage rate of the fin surface comdenstion water of its heat exchanger is high.

Background

Under the influence of energy efficiency standards, the outdoor heat exchanger in the refrigeration industry continues to use the reinforced fins for a long time. With the gradual increase of energy efficiency and the demand degree of heating performance, in recent years, leading enterprises have successively completed the replacement of reinforcing fins by flat sheets/corrugated sheets. Compared with the reinforced fin, the frosting rate of the flat sheet/corrugated sheet under the low-temperature working condition is obviously reduced, the time for keeping the circulating air volume of the heat exchanger stable is prolonged, and the power consumption of the air conditioner is reduced.

When the surface temperature of the outdoor heat exchanger is lower than the dew point temperature of air, water vapor is condensed into liquid water on the surface of the heat exchanger, which is called as condensate water. According to the traditional view, the drainage speed of the condensed water on the surface of the finned tube heat exchanger is high under the action of gravity, so that the influence of the condensed water on the wind resistance of the heat exchanger can be ignored.

However, through experimental observation and test analysis, the condensate water under the actual air conditioning working condition is found to have important influence on the uniformity of the wind field and the wind quantity of the air conditioning outdoor unit. Further analysis shows that the condensed water of the heat exchanger is generated on the surfaces of the fins except the surfaces of the connecting elbows. Referring to fig. 1, the fin surface includes a base plate 1 and a burring 2 formed on the base plate 1. Wherein, the comdenstion water on round hole turn-ups 2 surface flows to the lower limb of round hole turn-ups 2, and the liquid droplet of hanging causes the windage to increase. The condensed water on the surface of the base plate 1 is converged into a liquid film, one part of the condensed water flows to the surface of the circular hole flanging 2 under the action of the drag force and the gravity of wind, and the other part of the condensed water flows downwards along the base plate 1. The former is undesirable because it results in an extended drainage time.

Disclosure of Invention

In view of this, the utility model provides an air conditioner improves outdoor heat exchanger to the drainage rate of comdenstion water is expected to accelerate, reduces the comdenstion water and produces adverse effect to the wind field homogeneity and the wind volume of air conditioner outdoor unit, improves the efficiency of air conditioner.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

in some embodiments of the present application, an indoor unit of an air conditioner is provided, including:

a finned tube heat exchanger comprising a plurality of fins arranged in parallel and a heat conductive pipe penetrating the plurality of fins, an air flow passage being formed between adjacent two of the fins, the fins having:

the heat conduction pipe penetrates through the round hole flanging part;

the flow guide ring groove is annularly arranged on the periphery of the round hole flanging part;

and the inner drainage part is communicated with two adjacent flow guide ring grooves in the vertical direction.

The inner drainage part can accelerate the drainage speed of condensed water gathered at the diversion ring groove, excessive condensed water is prevented from gathering at the diversion ring groove, condensed water drops hung at the round hole flanging part are reduced, and the purposes of improving the heat exchange efficiency of the finned tube heat exchanger and improving the energy efficiency of the air conditioner are achieved.

In some embodiments of the present application, the inner drainage portion includes two inner drainage subsections that are communicated, and in two adjacent guide ring grooves along the vertical direction, one of the inner drainage subsections is communicated with one of the guide ring grooves, and the other of the inner drainage subsections is communicated with the other guide ring groove.

In some embodiments of the present application, two of the inner drainage portions are located on a central axis of two of the diversion ring grooves adjacent to each other in the vertical direction.

In some embodiments of the present application, there is a gap between two of the inner drainage subsections.

In some embodiments of this application, the fin has the base plate, round hole turn-ups portion by the base plate punches a hole and forms, be equipped with the bulge on the base plate, every the periphery of round hole turn-ups portion all the symmetry is equipped with two the bulge, the bulge with form between the round hole turn-ups portion the water conservancy diversion annular, relative two form between the tip of bulge the internal drainage subsection.

In some embodiments of the present application, a side surface of the protruding portion close to the round hole flanging portion is an inner side surface, and the inner side surface extends along a circumferential direction of the round hole flanging portion.

In some embodiments of the present application, an inner side surface of the protruding portion is inclined from the base plate to a direction away from the round hole flanging portion.

In some embodiments of the present application, the top surface of the protruding portion has a first inclined top surface and a second inclined top surface respectively disposed at two ends of the first inclined top surface, the intersection of the first inclined top surface and the second inclined top surface is the highest position of the top surface, the first inclined top surface is inclined downwards in the direction outside the fin from the intersection of the first inclined top surface and the second inclined top surface, and the second inclined top surface is inclined downwards in the direction of the internal drainage branch from the intersection of the first inclined top surface and the second inclined top surface.

In some embodiments of the present application, the base plate is provided with a plurality of reinforcing ribs, and the reinforcing ribs are disposed between two adjacent protrusions in the vertical direction.

In some embodiments of the present application, a side water discharging portion is provided on the substrate, the side water discharging portion is provided on both sides of the substrate along the air flowing direction, and the side water discharging portion and the inner water discharging portion are located on the same vertical plane.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a prior art finned tube heat exchanger (with heat pipes omitted);

FIG. 2 is a schematic structural view of the finned tube heat exchanger according to the embodiment (with heat conductive pipes omitted);

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic view of the flow of condensed water on the fins according to the embodiment.

Reference numerals:

in FIG. 1, 1-base plate, 2-round hole flanging;

in fig. 2 to 4:

100-fins;

10-round hole flanging part;

20-a flow guide ring groove;

30-inner drainage, 31-first inner drainage, 32-second inner drainage, 33-gap;

40-side drain;

50-projection, 51-inner side, 52-first inclined top, 53-second inclined top;

60-a substrate;

70-reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

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 application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "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 application can be understood in a specific case by those of ordinary skill in the art.

[ basic operation principle of air conditioner ]

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

When the surface temperature of the outdoor heat exchanger is lower than the dew point temperature of air, water vapor is condensed into liquid water on the surface of the heat exchanger, which is called as condensate water. The application emphasizes on improving the outdoor heat exchanger so as to accelerate the drainage rate of the condensed water, reduce the adverse effect of the condensed water on the wind field uniformity and the wind volume of the air conditioner outdoor unit and improve the energy efficiency of the air conditioner.

[ Fin tube Heat exchanger ]

The outdoor heat exchanger of the present application employs a finned tube heat exchanger including a plurality of fins 100 arranged in parallel and a heat conductive pipe (not shown) penetrating the plurality of fins 100, and an air flow passage is formed between adjacent two fins 100. The air flows through the airflow channel and exchanges heat with the refrigerant circulating in the heat conducting pipe, so that heat exchange is realized.

[ fins ]

Referring to fig. 2, each fin 100 has a circular hole burring 10, a guide ring groove 20, and an inner drain 30.

The round hole flanging part 10 is used for installing a heat conduction pipe, and the heat conduction pipe penetrates through the round hole flanging part 10. The condensed water droplets hanging on the round hole flanging part 10 can increase the wind resistance and reduce the heat exchange efficiency of the finned tube heat exchanger.

The present application accelerates the drainage rate of the condensed water on the fin 100 by the guide ring groove 20 and the inner drainage part 30.

Specifically, the diversion ring grooves 20 are annularly arranged on the periphery of the circular hole flanging part 10, and the inner drainage part 30 is communicated with two diversion ring grooves 20 adjacent to each other in the vertical direction. The inner drainage part 30 can accelerate the drainage speed of condensed water gathered at the diversion ring groove 20, so that excessive condensed water is prevented from gathering at the diversion ring groove 20, condensed water drops hung at the round hole flanging part 10 are reduced, and the purposes of improving the heat exchange efficiency of the finned tube heat exchanger and improving the energy efficiency of the air conditioner are achieved.

In some embodiments, referring to fig. 2, the inner drain portion 30 includes two inner drain subsections that are communicated, and one of the inner drain subsections is communicated with one of the flow guide ring grooves 20 and the other inner drain subsection is communicated with the other flow guide ring groove 20 among two flow guide ring grooves 20 adjacent to each other in the vertical direction.

For convenience of description, the two inner drainage branches are defined as a first inner drainage branch 31 and a second inner drainage branch 32, respectively, the first inner drainage branch 31 communicates with the guide ring groove 20 located above, and the second inner drainage branch 32 communicates with the guide ring groove 20 located below.

Fig. 4 is a schematic flow diagram of the condensed water on the fin, and the condensed water collected in the upper diversion ring groove 20 flows into the lower diversion ring groove 20 through the first inner water drainage branch 31 and the second inner water drainage branch 32, and then continues to flow below the fin 100 through the subsequent inner water drainage part 30 and the diversion ring groove 20 until being drained from the fin 100.

Through the split design of the inner drainage part 30, two adjacent guide ring grooves 20 in the vertical direction are skillfully communicated, so that the conduction and the quick discharge of condensed water are realized.

In this embodiment, the two inner drainage branches (i.e. the first inner drainage branch 31 and the second inner drainage branch 32) are located on the central axis of the two diversion ring grooves 20 adjacent to each other in the vertical direction, which is more beneficial to drainage of condensed water and improves drainage rate.

In this embodiment, a gap 33 is formed between the two inner water drainage branches, and when the air flows through the fin 100, the air flow can flow through the gap 33, so that the wind resistance is reduced, and the heat exchange efficiency is improved.

In some embodiments of the present application, with continued reference to FIG. 2, the fin 100 has a base 60, and the circular hole cuff 10 is punched out of the base 60. The base plate 60 is provided with a protruding part 50, the periphery of each round hole flanging part 10 is symmetrically provided with two protruding parts 50, and a flow guide ring groove 20 is formed between each protruding part 50 and the round hole flanging part 10. An inner drainage subsection is formed between the ends of the two opposing projections 50.

In other words, the diversion ring groove 20 and the inner drainage branch are defined by the protrusion 50 and the circular hole flanging part 10, so that the processing is convenient and the structure is reliable.

Through optimizing the concrete structure of bulge 50, can also play the effect that improves water conservancy diversion rate, reduce the windage simultaneously.

Specifically, with reference to fig. 2, a side surface of the protruding portion 50 close to the circular hole flanging portion 10 is an inner side surface 51, the inner side surface 51 extends along the circumferential direction of the circular hole flanging portion 10, and an arc-shaped diversion trench is defined between the inner side surface 51 and the circular hole flanging portion 10 to facilitate diversion.

Further, referring to fig. 3, the inner side surface 51 of the protruding portion is inclined from the base plate 60 in a direction away from the round hole burring 10 to reduce the flow resistance of air and water.

Referring to fig. 2 and 3, the top surface of the protrusion 50 has a first inclined top surface 52 and a second inclined top surface 53 respectively disposed at both ends of the first inclined top surface 52, and the intersection of the first inclined top surface 52 and the second inclined top surface 53 is the highest position of the top surface, which is marked as a highest position line B. The first inclined top surface 52 is inclined downward from the highest position line B toward the outside of the fin 100, and the second inclined top surface 53 is inclined downward from the highest position line B toward the inner drainage branch.

A part of the condensed water is blown to the top surface of the protrusion 50 under the action of the air flow, and at this time, the first inclined top surface 52 has a blocking effect on the part of the condensed water, so that the part of the condensed water is prevented from flowing into the flow guide ring groove 20, and the gathering amount of the condensed water in the flow guide ring groove 20 is reduced.

The first and second inclined top surfaces 52 and 53 simultaneously facilitate a reduction in the resistance to the passage of air and water.

In some embodiments of the present application, a plurality of ribs 70 are disposed on the base plate 60, and the ribs 70 are disposed between two adjacent protrusions 50 along the vertical direction, so as to increase the structural strength of the base plate 60.

The specific shape of the reinforcing rib 70 is not limited in this embodiment, and may be a convex triangular rib, an arc rib, or the like.

In some embodiments of the present application, the side water discharging part 40 is disposed on the substrate 60, the side water discharging part 40 is disposed on two sides of the substrate 60 along the air flowing direction, and the side water discharging part 40 and the inner water discharging part 30 are on the same vertical plane.

The condensed water flowing down from the first inclined top surface 52 flows down along the side drain portion 40 and is discharged from the bottom of the fin 100, so that the condensed water is prevented from being directly sprayed obliquely.

The side water discharging part 40 and the inner water discharging part 30 are positioned on the same vertical surface, so that the increase of wind resistance caused by the height difference between the side water discharging part and the inner water discharging part is avoided.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. An outdoor unit for an air conditioner, comprising:

the finned tube heat exchanger comprises a plurality of fins arranged in parallel and a heat conduction tube penetrating through the fins, wherein an airflow channel is formed between every two adjacent fins;

the fin has:

the heat conduction pipe penetrates through the round hole flanging part;

the flow guide ring groove is annularly arranged on the periphery of the round hole flanging part;

interior drainage portion, its intercommunication is adjacent two along vertical direction the water conservancy diversion annular, interior drainage portion is adjacent two along vertical direction including two interior drainage subsections of intercommunication in the water conservancy diversion annular, one of them interior drainage subsection and one of them water conservancy diversion annular intercommunication, another interior drainage subsection and another water conservancy diversion annular intercommunication, two have the clearance between the interior drainage subsection.

2. The outdoor unit of claim 1, wherein,

the two inner drainage parts are positioned on the central axis of the two adjacent guide ring grooves in the vertical direction.

3. The outdoor unit of claim 1 or 2, wherein,

the fin has the base plate, round hole turn-ups portion by the base plate punches a hole and forms, be equipped with the bulge on the base plate, every the periphery of round hole turn-ups portion all the symmetry is equipped with two the bulge, the bulge with form between the round hole turn-ups portion the water conservancy diversion annular, relative two form between the tip of bulge interior drainage subsection.

4. The outdoor unit of claim 3, wherein,

one side surface, close to the round hole flanging part, of the protruding part is an inner side surface, and the inner side surface extends along the circumferential direction of the round hole flanging part.

5. The outdoor unit of claim 4, wherein,

the inner side surface of the protruding part inclines from the substrate to the direction far away from the round hole flanging part.

6. The outdoor unit of claim 3, wherein,

the top surface of bulge has first slope top surface and locates the second slope top surface of first slope top surface both ends separately, the intersection junction of first slope top surface with the second slope top surface does the highest position of top surface, first slope top surface certainly the intersection junction of first slope top surface with the second slope top surface to the outside direction downward sloping of fin, second slope top surface certainly the intersection junction of first slope top surface with the second slope top surface to the direction downward sloping of interior drainage subsection.

7. The outdoor unit of claim 3, wherein,

the base plate is provided with a plurality of reinforcing ribs, and the reinforcing ribs are arranged between two adjacent protruding parts in the vertical direction.

8. The outdoor unit of claim 3, wherein,

the side drainage part is arranged on the substrate and is arranged on two sides of the substrate along the air flowing direction, and the side drainage part and the inner drainage part are located on the same vertical surface.

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