CN216693799U - Outdoor air conditioner - Google Patents

Abstract

The utility model relates to the technical field of air conditioners, and discloses an outdoor air conditioner, which comprises: a housing; a fan mounted in the housing; a heat exchanger mounted within the housing; the heat exchanger includes: the fan guides airflow outside the shell to flow along the plane where the fins are located, and the plane where each fin is located is arranged opposite to the horizontal plane, so that the path of the condensed water generated on the heat exchanger flowing on the fins faces the width direction of each fin. The utility model optimizes the structure of the prior outdoor heat exchanger, so that the heat exchanger can better exert the drainage performance and realize better frost inhibition and defrosting effects.

Description

Outdoor air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an outdoor air conditioner.

Background

When the air conditioner operates in a heating condition, the heat exchanger plays a role of an evaporator, dew is condensed due to low evaporation temperature, dew is attached to the surface of the fin, and the heat exchange effect is influenced if too much dew is remained. Especially under the low temperature working condition, the heat exchanger can condense and frost, and if the water can be quickly discharged, the frost can be delayed, and the aim of quickly defrosting can be fulfilled.

At present, the air-conditioning heat exchanger generally uses a hydrophilic material to manufacture fins, water drops on a hydrophilic coating, the contact angle is small, the water drops can be spread to form a water film as shown in fig. 7, and the water film flows downwards along the fins under the action of gravity and is finally removed; because the water film is formed, a water bridge cannot be formed by crossing the fins, the residue of condensed water in the heat exchanger is reduced, and compared with a material without a coating, the water film can play a certain frost inhibition role, but the problem of frosting of the heat exchanger with the hydrophilic coating under a low-temperature working condition is still the bottleneck problem of heating in a low-temperature environment in winter.

Except that the hydrophilic material is used for manufacturing the fins, the material with the super-hydrophobic coating is also commonly used for manufacturing the fins in the prior art, so that water drops with larger contact angles can be formed on the surfaces of the fins, as shown in figure 8, and the water drops are extremely easy to roll and fall off, if the super-hydrophobic coating can be applied to an air-conditioning heat exchanger, the frost inhibition and defrosting process of heating, particularly low-temperature heating working conditions can be greatly improved, but when the super-hydrophobic coating is applied to the air-conditioning heat exchanger, the following problems still exist: due to the hydrophobic property, water drops formed on the surface are large in height, residues are easy to generate in the partial fin structure and the area with insufficient hydrophobicity caused by the processing technology in the process of flowing downwards along the fins, water drops at the residues continuously grow, and finally a water bridge is formed between the two fins in a crossing mode, so that the drainage performance of the water bridge is weakened; if more water bridges appear on the super-hydrophobic fins, the process of forming the water bridges is shown in fig. 9, the formed water bridges can influence heat exchange, the air quantity of the heat exchanger is reduced, the evaporation temperature is reduced, frosting can be accelerated seriously, and the characteristics of frost inhibition and fast defrosting of the super-hydrophobic coating cannot be exerted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to optimally design the structure of the heat exchanger of the prior outdoor air conditioner aiming at the problems of poor drainage, poor frost inhibition and poor defrosting effect of the heat exchanger.

In some embodiments of the present application, improvements are made to the structure of a heat exchanger, the heat exchanger comprising: the fan guides airflow outside the shell to flow along the plane where the fins are located, and the plane where each fin is located is opposite to the horizontal plane, so that the path of the condensed water generated on the heat exchanger flowing on the fins faces the width direction of each fin.

In some embodiments of the present application, the mounting direction of the fins is improved, the plane of the fins being parallel to the horizontal plane; the fan guides the air flow outside the shell to flow along the plane of the fins, and under the action of the flowing air flow, the condensed water generated on the heat exchanger directly flows along the width direction of the fins until the condensed water falls down.

In some embodiments of the present application, the installation direction of the fins is improved, a plane where the fins are located and a horizontal plane form a certain inclination angle, and an air inlet end of the fins is higher than an air outlet end of the fins in the horizontal direction; the condensed water produced on the heat exchanger flows from the higher side to the lower side of the fins under the action of the gravity component of the condensed water until the condensed water falls down.

In some embodiments of the present application, the installation direction of the fins is improved, a plane where the fins are located and a horizontal plane form a certain inclination angle, and an air inlet end of the fins is higher than an air outlet end of the fins in the horizontal direction; under the dual action of the gravity component of the condensed water generated on the heat exchanger and the flowing air flow generated by the fan, the condensed water flows from the higher side to the lower side of the fins until falling.

In some embodiments of the application, the performance of the fin surface coating is improved, an ultra-hydrophobic layer is arranged on the surface of each fin, a stable contact angle of condensed water on the ultra-hydrophobic layer is not less than 150 degrees, a rolling contact angle is not more than 10 degrees, the drainage, frost suppression and defrosting effects of the fins can be better exerted due to the arrangement of the ultra-hydrophobic layer, and the heating capacity and energy efficiency of an outdoor air conditioner, especially the heating capacity in a low-temperature environment, are improved. The super-hydrophobic coating can enable the surface of the fin to form water drops with large contact angles, and the water drops are easy to roll off.

In some embodiments of the present application, there is provided an outdoor air conditioner including:

a housing;

a fan mounted in the housing;

a heat exchanger mounted within the housing;

the heat exchanger includes:

the fan guides airflow outside the shell to flow along the plane where the fins are located, and the plane where each fin is located is arranged opposite to the horizontal plane, so that the path of the condensed water generated on the heat exchanger flowing on the fins faces the width direction of each fin.

In some embodiments of the present application, the plane of the fins is parallel to the horizontal plane.

In some embodiments of the application, the plane that the fin place is certain inclination with the horizontal plane, and on the horizontal direction the air inlet end of fin is higher than the air-out end of fin.

In some embodiments of the present application, the fins are inclined at an angle of no more than 45 ° from the horizontal.

In some embodiments of the present application, adjacent fins are disposed in parallel.

In some embodiments of the present application, the heat exchanger further comprises: and the refrigerant pipe group penetrates through the fins.

In some embodiments of the present application, the refrigerant tube group includes at least one refrigerant tube, and an axial direction of any refrigerant tube is perpendicular to a horizontal plane, so as to define that a plane in which the fins are located is disposed opposite to the horizontal plane, that is, the plane in which the fins are located is entirely parallel to the horizontal plane or forms a certain included angle with the horizontal plane, so that a path along which condensed water generated on the heat exchanger flows on the fins faces a width direction of each of the fins.

In some embodiments of the present application, the refrigerant tubes are equally spaced apart within the same refrigerant tube group.

In some embodiments of the present application, the fins disposed on the same refrigerant tube group are equally spaced apart.

It should be noted that the spacing distance between the refrigerant tubes and the fins may be arranged at equal intervals or at unequal intervals according to actual conditions in the practical application process, wherein the equal interval arrangement is a conventional use mode.

In some embodiments of the present application, the heat exchanger is a plate heat exchanger.

In some embodiments of the present application, the heat exchanger is an L-type heat exchanger.

In some embodiments of the present application, the heat exchanger is a type C heat exchanger.

It should be noted that the plate-type heat exchanger, the L-type heat exchanger and the C-type heat exchanger are conventional heat exchanger types, but are not limited to the above-mentioned heat exchanger types in practical application.

In some embodiments of the present application, the fin is made of copper, aluminum, steel, or an alloy of at least one of the foregoing materials.

In some embodiments of the present application, the fin is made of a hydrophilic aluminum foil.

Drawings

FIG. 1 is a schematic structural diagram of an outdoor air conditioner according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an outdoor air conditioner according to an embodiment of the present invention;

FIG. 3 is a schematic view of an outdoor air conditioner according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an outdoor air conditioner according to an embodiment of the present invention;

FIG. 5 is an enlarged schematic view at "A" in FIG. 4;

FIG. 6 is a schematic view showing a state of a water film formed on a hydrophilic surface by condensed water generated from the heat exchanger;

FIG. 7 is a schematic view showing a state of a water film formed on a superhydrophobic surface by condensed water generated from a heat exchanger;

FIG. 8 is a process and effect diagram of the formation of water bridges on the superhydrophobic surface by the condensed water generated from the heat exchanger;

fig. 9 is a schematic view of the overall structure of a prior art outdoor heat exchanger;

FIG. 10 is a front view of the prior art outdoor heat exchanger of FIG. 9;

FIG. 11 is a side view of the prior art outdoor heat exchanger of FIG. 9;

FIG. 12 is a top plan view of the prior art outdoor heat exchanger of FIG. 9;

FIG. 13 is a schematic view showing the overall structure of a heat exchanger according to an embodiment of the present invention;

FIG. 14 is a front view of the heat exchanger of FIG. 13;

FIG. 15 is a side view of the heat exchanger of FIG. 13;

FIG. 16 is a top view of the heat exchanger of FIG. 13;

FIG. 17 is a schematic view showing the overall structure of a heat exchanger according to another embodiment of the present invention;

FIG. 18 is a front view of the heat exchanger of FIG. 17;

FIG. 19 is a side view of the heat exchanger of FIG. 17;

FIG. 20 is an enlarged schematic view at "A" in FIG. 19;

FIG. 21 is a top view of the heat exchanger of FIG. 17;

fig. 22 is a schematic view showing a path on fins where condensed water generated in the prior art outdoor heat exchanger and the heat exchanger of the present invention flows.

In the figure, the position of the upper end of the main shaft,

100. a housing; 110. a front surface; 120. a rear surface; 130. a bottom surface; 140. a top surface; 150. a side surface; 160. mounting a plate;

200. a compressor; 220. a pipeline;

300 is a water film;

400. a heat exchanger; 410. a refrigerant pipe; 420. the heat exchange part 430 is a fin;

510. an air inlet; 520. an air outlet; 530. a grid.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

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.

The air conditioner performs a refrigeration cycle of the air conditioner by using the compressor 200, the condenser, the expansion valve, and the evaporator in the present application. 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 200 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 200. 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 the refrigeration cycle including the compressor 200 and the outdoor heat exchanger 400, the indoor unit of the air conditioner includes an indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger 400 serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

An air conditioner according to some embodiments of the present application includes an indoor unit (not shown) installed in an indoor space. An indoor unit connected to the outdoor unit installed in the outdoor space through a pipe. The outdoor unit may be provided with a compressor 200, an outdoor heat exchanger 400, an outdoor fan, an expander, and the like of a refrigeration cycle, and the indoor unit may be provided with an indoor heat exchanger and an indoor fan.

For example, the outdoor unit may include a wall-mounted outdoor air conditioner installed on a wall of the outdoor space.

Referring to fig. 1, 2 and 3, an outdoor air conditioner according to some embodiments of the present application includes a case 100 in which a plurality of components constituting a refrigeration cycle are mounted in the case 100. The case 100 includes an at least partially opened front surface 110, a bottom surface 130 installed on a wall of the outdoor space and provided with a mounting plate 160, a rear surface 120 defining a rear configuration, side surfaces 150 disposed at both sides of the bottom surface 130, and a top surface 140 defining a top appearance.

As shown in fig. 1-3, a mounting plate 160 is coupled to the bottom surface 130. The mounting plate 160 may define mounting holes therein that are coupled to the wall. For example, the mounting plate 160 may be coupled to a wall, and the housing 100 may be configured to mount on the mounting plate 160.

The case 100 is an outdoor unit case 100 provided in an outdoor space in the case of a split type air conditioner.

Referring to fig. 1, 2 and 3, in accordance with some embodiments of the present application, a housing 100, comprises: a suction part through which outdoor air is introduced; and a discharge part through which air introduced through the suction part is heat-exchanged and then discharged to an outdoor space, the discharge part including an air outlet 520, and the suction part including an air inlet 510.

The suction part may be formed by opening at least a portion of the rear of the case 100, and the discharge part may be formed by opening at least a portion of the front of the case 100 and at least a portion of the side of the case 100.

Also, a suction grill 530 for preventing introduction of foreign substances may be provided on the suction part, and a discharge grill 530 may be provided on the discharge part.

Referring to fig. 4 and 5, in some embodiments according to the present application, a heat exchanger 400 is installed in the case 100, and the heat exchanger 400 exchanges heat with air drawn through the suction part.

The heat exchanger 400 includes a heat exchange portion 420 and an end plate for fixing the heat exchange portion 420, the heat exchange portion 420 including a refrigerant pipe 410 through which a refrigerant flows, and a fin 430 coupled to the refrigerant pipe 410 so as to increase a heat exchange area, the heat exchanger 400 being disposed to surround a suction side of a fan.

For example, the heat exchanger 400 may include a plurality of curved heat exchange portions 420.

According to some embodiments of the present application, a fan (not shown) is mounted in the housing 100. For example, the fan may include an axial flow fan that radially discharges air drawn in the radial direction.

The fan may have a shape of a plurality of blades arranged in a circumferential direction.

A fan motor is coupled to the fan. The fan motor is driven to provide a rotational force to the fan.

As shown in fig. 9-12, a heat exchanger 400 of the prior art includes: the cooling structure comprises a plurality of fins 430 and a refrigerant tube group, wherein the plane of each fin 430 is vertical to the horizontal plane, and the refrigerant tube group is arranged on the fins 430 in a penetrating manner; the refrigerant tube group comprises at least one refrigerant tube 410, the axial direction of any refrigerant tube 410 is parallel to the horizontal plane, and in the same refrigerant tube group, the refrigerant tubes 410 are equally spaced; the fins 430 provided through the same refrigerant tube group are equally spaced apart.

In the heat exchanger 400 of the outdoor air conditioner, each fin surface is provided with a super-hydrophobic layer, or a hydrophilic layer.

When the surfaces of the fins are made of hydrophilic materials, after condensed water generated by the heat exchanger 400 forms water drops on the hydrophilic coating, the contact angle is small, and the water film 300 formed by spreading is shown in fig. 6, and the water film 300 flows downwards along the fins 430 under the action of single gravity and is finally discharged; because the water film is formed, a water bridge cannot be formed among the fins 430 in a crossing manner, the residue of condensed water in the heat exchanger is reduced, and compared with a material without a coating, the frost inhibition effect can be achieved to a certain extent, but the problem of frosting of the heat exchanger 400 with the hydrophilic layer under a low-temperature working condition is still the bottleneck problem of heating in a low-temperature environment in winter.

When the surface of the fin 430 is made of a super-hydrophobic material, after the condensed water generated by the heat exchanger 400 forms water drops on the super-hydrophobic coating, the water drops of the condensed water with a large contact angle can be formed on the surface of the fin 430, and the formed water film 300 is as shown in fig. 7, and is easy to roll and fall off under the action of gravity, but when the super-hydrophobic coating is applied to an outdoor air-conditioning heat exchanger, the following problems still exist: due to the hydrophobic property, the height of water drops formed on the surface is large, during the process of flowing downwards along the fins, residues are easily generated in the partial fin 430 structure and the area with insufficient hydrophobicity caused by the processing technology, water drops at the residues continuously grow, and finally, a water bridge is formed between the two fins 430 in a crossing mode, so that the drainage performance of the water drops is weakened; if more water bridges appear on the super-hydrophobic fins 430, the formed water bridges influence heat exchange, so that the air quantity of the heat exchanger 400 is reduced, the evaporation temperature is reduced, frosting is accelerated seriously, the super-hydrophobic coating can not be utilized to inhibit frosting, and the characteristic of quick defrosting is realized.

As shown in fig. 13 and 17, in some embodiments according to the present application, a heat exchanger 400 includes: and a plurality of fins 430, wherein the air flow outside the housing 100 guided by the fan flows along the plane of the fins 430, and the plane of each fin 430 is disposed opposite to the horizontal plane, so that the path of the condensed water generated on the heat exchanger 400 flowing on the fins 430 is directed toward the width direction of each fin 430.

According to some embodiments of the present application, as shown in fig. 13-16, the plane of the fins 430 is parallel to the horizontal plane, and the adjacent fins 430 are arranged in parallel, and the direction of the gravitational component along the surface of the fins 430 is consistent with the direction of the flowing airflow generated by the fan through the fins 430.

According to some embodiments of the present application, the heat exchanger 400 further comprises: a refrigerant tube group including at least one refrigerant tube 410.

The refrigerant pipe group is used for connecting the outdoor unit and the indoor unit, realizing the circulation of the refrigerant and exchanging heat between the air of the outdoor space and the air of the indoor space.

The refrigerant tube group is arranged on the fin 430 in a penetrating way; the axial direction of any refrigerant tube 410 is perpendicular to the horizontal plane.

The refrigerant tubes 410 in the same refrigerant tube group are equally spaced; the fins 430 penetrating through the same refrigerant tube group are spaced at equal intervals, and the spacing distance between the fins 430 is as small as possible, and the illustrated structure shows that the spacing between adjacent fins 430 is relatively large, but in an actual air conditioner, the arrangement density of the fins 430 is much higher than that in the schematic diagram.

According to some embodiments of the present disclosure, each of the fins 430 has a super-hydrophobic layer disposed on a surface thereof, and a stable contact angle of the condensed water on the super-hydrophobic layer is greater than or equal to 150 °, and a rolling contact angle is less than or equal to 10 °.

According to some embodiments of the present application, the heat exchanger 400 is a plate heat exchanger.

According to some embodiments of the present application, the surface of the fin 430 is made of a super-hydrophobic material, after condensed water generated by the heat exchanger 400 forms water drops on a super-hydrophobic coating, water drops with large contact angles are formed on the surface of the fin 430, the formed water drops are subjected to combined action of drag force of wind generated by a fan and gravity of the condensed water drops, the condensed water drops roll and fall along the width direction of the fin 430, the drainage flow distance of the condensed water drops is short, the condensed water drops can fall only by flowing the distance of the width of the fin 430, risks of water bridge formation and residue of the condensed water drops of the heat exchanger in the flowing process in the prior art are greatly reduced, drainage of the super-hydrophobic layer is more favorably exerted, and better defrosting and frost inhibiting effects are realized.

According to another embodiment of the present application, as shown in fig. 17-21, the plane of the fin 430 is inclined from the horizontal plane, such as the angle a in fig. 20, and the air inlet end of the fin 430 is higher than the air outlet end of the fin 430 in the horizontal direction.

For example, the fins 430 may be inclined at an angle of no more than 45 ° from horizontal.

According to another embodiment of the present application, the surface of the fin 430 is made of a super-hydrophobic material, after condensed water generated by the heat exchanger 400 forms a water droplet on the super-hydrophobic coating, a water droplet with a large contact angle is formed on the surface of the fin 430, and under the dual actions of the gravity component of the condensed water droplet generated on the heat exchanger 400 and the flowing air current generated by the fan, the condensed water flows from the higher side to the lower side of the fin 430 until falling.

In accordance with still other embodiments of the present application, the heat exchanger 400 is an L-shaped heat exchanger.

In accordance with still other embodiments of the present application, the heat exchanger 400 is a type C heat exchanger.

The condensed water formed on the surface of the heat exchanger fin is easier to roll and fall off due to the influence of the super-hydrophobic layer, but the condensed water drop with the same volume is easier to form a water bridge to influence heat exchange due to the large contact angle and the high height of the water drop. If the outdoor heat exchanger of the prior art is adopted, as shown in the left side of fig. 22, condensed water droplets on the fins of the heat exchanger are subjected to the combined action of the drag force of wind generated by the fan and the gravity of the condensed water droplets, the gravity is dominant, the condensed water droplets need to flow through a longer distance, if the distance between the refrigerant tubes in one refrigerant tube group is 20mm, and there are 20 tubes, the water droplets at the uppermost ends of the fins need to flow through a distance of 20 × 20 to 400mm before being discharged, and finally are discharged from the bottom of the heat exchanger.

And adopt the heat exchanger of this application, as shown on the right side of fig. 22, after the comdenstion water droplet on the heat exchanger fin formed, receive the combined action of the drag force of the wind that the fan produced and comdenstion water droplet gravity, because the plane at fin place is parallel with the horizontal plane or is certain inclination, this direction of gravity component of messenger's comdenstion water droplet is unanimous with the effect direction of wind drag force, make comdenstion water droplet roll and drop along fin width direction, the discharge flow-through distance of comdenstion water droplet is shorter, if the fin width is 18mm, the comdenstion water droplet only need flow through 18mm and will drop, very big reduction comdenstion water droplet forms water bridge and remaining danger in the flow process, more be favorable to exerting the drainage of super hydrophobic layer, realize better inhibiting frosting and defrosting effect.

According to the first concept of the application, the super-hydrophobic coating covers the surface of the fin, so that water drops with larger contact angles can be formed on the surface of the fin, the water drops can easily roll and fall off, the super-hydrophobic coating is applied to an outdoor air conditioner heat exchanger, and the defrosting process of heating, particularly low-temperature heating working conditions, is greatly improved.

According to the second concept of the present application, since the refrigerant tube group of the heat exchanger is axially perpendicular to the horizontal plane, the plane on which the fins are located is necessarily disposed opposite to the horizontal plane, so that the path of the condensed water generated on the heat exchanger flowing on the fins is oriented in the width direction of each fin.

According to the third concept of the present application, since the plane on which the fins are located is parallel to the horizontal plane; under the action of wind power generated by the fan, condensed water generated on the heat exchanger directly flows along the width direction of the fins until falling, the flow is very short, the danger that the condensed water forms a water bridge and remains in the flowing process is greatly reduced, the drainage of the super-hydrophobic fins is more favorably exerted, and better frost suppression and defrosting effects are realized.

According to the fourth concept of the present application, the plane where the fins are located and the horizontal plane form a certain inclination angle, and the air inlet end of the fins is higher than the air outlet end of the fins in the horizontal direction; the condensed water generated on the heat exchanger flows from the higher side of the fin to the lower side of the fin under the action of the gravity component of the condensed water until the condensed water falls down, the flow is short, the danger that the condensed water forms a water bridge and remains in the flowing process is greatly reduced, the drainage of the super-hydrophobic fin is more favorably exerted, and the better frost inhibition and defrosting effects are realized.

According to the fifth concept of the present application, the plane where the fins are located and the horizontal plane form a certain inclination angle, and the air inlet end of the fins is higher than the air outlet end of the fins in the horizontal direction; under the dual action of the gravity component of the condensate water generated on the heat exchanger and the flowing air flow generated by the fan, the condensate water flows from the higher side to the lower side of the fins until falling down, the flow is very short, the danger that the condensate water forms a water bridge and remains in the flowing process is greatly reduced, the drainage performance of the super-hydrophobic fins is more favorably exerted, and the better frost suppression and defrosting effects are realized.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. An outdoor air conditioner, comprising:

a housing;

a fan mounted in the housing;

a heat exchanger mounted within the housing;

the heat exchanger includes:

the fan guides airflow outside the shell to flow along the plane where the fins are located, and the plane where each fin is located is arranged opposite to the horizontal plane, so that the path of the condensed water generated on the heat exchanger flowing on the fins faces the width direction of each fin.

2. An outdoor air conditioner according to claim 1 wherein said fins are disposed in a plane parallel to the horizontal plane.

3. The outdoor air conditioner as claimed in claim 1, wherein the plane of the fins is inclined to the horizontal plane, and the air inlet end of the fins is higher than the air outlet end of the fins in the horizontal direction.

4. An outdoor air conditioner according to claim 3 wherein said fins are inclined at an angle of not more than 45 ° to the horizontal.

5. An outdoor air conditioner according to claim 1 wherein adjacent fins are arranged in parallel.

6. An outdoor air conditioner according to any one of claims 1-5, wherein said heat exchanger further comprises:

and the refrigerant pipe group penetrates through the fins.

7. An outdoor air conditioner according to claim 6 wherein said refrigerant tube group includes at least one refrigerant tube, and the axial direction of any of said refrigerant tubes is perpendicular to the horizontal plane.

8. An outdoor air conditioner according to claim 7 wherein said refrigerant tubes are equally spaced in the same refrigerant tube group;

the fins penetrating the same refrigerant tube group are equal in spacing distance.

9. An outdoor air conditioner according to any one of claims 1-5, characterized in that each of the fins is provided with a super-hydrophobic layer, the stable contact angle of the condensed water on the super-hydrophobic layer is not less than 150 °, and the rolling contact angle is not more than 10 °.

10. An outdoor air conditioner according to claim 1 wherein said heat exchanger is any one of a flat plate type heat exchanger, an L-type heat exchanger and a C-type heat exchanger.

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