WO2020098358A1 - Water drip pan and air conditioner outdoor unit having same - Google Patents

Abstract

Disclosed is a water drip pan, relating to the technical field of refrigeration. The water drip pan is arranged below fins of a heat exchanger. Drain holes are provided in a bottom surface, corresponding to the fins of the heat exchanger, of the water drip pan, and the shape of arrangement of the drain holes is consistent with the shapes of the cross sections of the fins of the heat exchanger. According to an embodiment of the present invention, by providing the drain holes in the bottom surface, corresponding to the fins of the heat exchanger, of the water drip pan, water flowing onto the water drip pan through the fins of the heat exchanger can get closer to the drain holes, such that the water can be drained from the drain holes as fast as possible; and the shape of arrangement of the drain holes is consistent with the shapes of the cross sections of the fins of the heat exchanger, such that the drain holes can all be provided below the fins of different shapes of the heat exchanger to enable the water flowing onto the water drip pan through the fins of the heat exchanger to be drained from the drain holes nearby, thereby avoiding the problem that the water drip pan does not drain water smoothly because the water is frozen when the ambient temperature is relatively low.

Description

Water receiving tray and air-conditioning outdoor unit with same

This application is based on a Chinese patent application with an application number of 201811372137.4 and an application date of November 16, 2018, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference.

Technical field

The invention relates to the technical field of refrigeration, in particular to a water receiving tray and an air conditioner outdoor unit having the same.

Background technique

The outdoor unit of the air conditioner in the prior art includes a water receiving tray. The bottom surface of the water receiving tray is provided with a drain hole. As can be seen from FIGS. 1 to 4, the drain holes are distributed in the middle of the bottom surface of the water tray. There is no drainage hole under the fin of the air conditioner. Under the condition of low temperature heating and defrosting of the outdoor unit of the air conditioner, the ambient temperature is low, and the water flowing through the heat exchanger to the water receiving tray is easy to be frozen, causing The drain pan is not well drained.

Summary of the invention

Embodiments of the present invention provide a water receiving tray and an air conditioner outdoor unit having the same to solve the problem of poor drainage of the water receiving tray in the prior art. In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary section is not a general comment, nor is it to determine key / important elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

According to a first aspect of the embodiments of the present invention, there is provided a water receiving tray, the water receiving tray is disposed below the fin of the heat exchanger, and the bottom surface of the water receiving tray corresponding to the fin of the heat exchanger is provided with drainage The arrangement shape of the holes and the drain holes is consistent with the cross-sectional shape of the fins of the heat exchanger.

In some alternative embodiments, the cross-section of the drain hole is circular or rectangular or oval.

In some optional embodiments, when the cross section of the drain hole is circular, the diameter of the drain hole is greater than or equal to 20 mm and less than or equal to 40 mm;

When the cross section of the drain hole is rectangular, the length and width of the drain hole are greater than or equal to 20 mm, and less than or equal to 40 mm;

When the cross section of the drain hole is elliptical, the long axis and short axis of the drain hole are greater than or equal to 20 mm, and less than or equal to 40 mm.

In some optional embodiments, when the cross section of the drain hole is circular, the diameter of the drain hole is 30 mm;

When the cross section of the drain hole is rectangular, the length of the drain hole is 30 mm and the width is 25 mm;

When the cross section of the drain hole is elliptical, the long axis of the drain hole is 35 mm and the short axis is 28 mm.

In some alternative embodiments, the total area of the plurality of drain holes is 30% to 40% of the cross-sectional area of the heat exchanger.

In some alternative embodiments, the total area of the plurality of drain holes is 35% of the cross-sectional area of the heat exchanger.

In some alternative embodiments, the intervals between the multiple drain holes are the same or different.

In some alternative embodiments, the center of the drain hole is located on the center plane in the width direction of the heat exchanger.

According to a second aspect of the embodiments of the present invention, there is provided an outdoor unit of an air conditioner having the above water receiving tray.

The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

In the embodiment of the present invention, by providing drain holes on the bottom surface of the water receiving tray corresponding to the fins of the heat exchanger, the distance between the water flowing through the heat exchanger fins and the water receiving tray and the drain holes can be further increased. Nearly, the water can be discharged from the drainage holes as soon as possible, and by aligning the arrangement shape of the drainage holes with the cross-sectional shape of the fins of the heat exchanger, the drainage holes under the fins of the heat exchangers of different shapes can be made, The water flowing through the fins of the heat exchanger to the water receiving tray can be discharged from the nearby drain holes, to avoid poor drainage of the water receiving tray due to frozen water when the ambient temperature is low.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the present invention.

BRIEF DESCRIPTION

The drawings herein are incorporated into and constitute a part of this specification, show embodiments consistent with the present invention, and are used to explain the principles of the present invention together with the specification.

Fig. 1 is a schematic diagram showing a wind direction between a water receiving tray and a heat exchanger according to an exemplary embodiment;

Fig. 2 is a partial enlarged view showing a water receiving tray and a heat exchanger according to an exemplary embodiment;

Fig. 3 is a distribution diagram of a supporting boss according to an exemplary embodiment;

Fig. 4 is a structural diagram of a cross section of a fin according to an exemplary embodiment;

Fig. 5 is a structural diagram showing a cross section of a fin according to another exemplary embodiment;

Fig. 6 is a structural diagram of a cross section of a fin according to yet another exemplary embodiment;

Fig. 7 is a distribution diagram of a drainage hole according to an exemplary embodiment;

Fig. 8 is a schematic diagram of an explosion structure of a water receiving tray according to an exemplary embodiment;

Fig. 9 is a partially enlarged view of an explosive structure of a water receiving tray according to an exemplary embodiment;

Fig. 10 is a schematic diagram of an assembly structure of a water receiving tray according to an exemplary embodiment;

Description of reference signs:

1. Heat exchanger; 11, fins; 2, water receiving tray; 21, support boss; 22, drain hole; 23, first face; 24, second face; 25, third face; 3. electric heating Pipe; 4, fixed clip; 41, limit part; 42, fixed hole; 5, fan.

detailed description

The following description and drawings sufficiently illustrate specific embodiments of the present invention to enable those skilled in the art to practice them. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The scope of the embodiments of the present invention includes the entire scope of the claims, and all available equivalents of the claims. In this article, relational terms such as first and second are only used to distinguish one entity or structure from another entity or structure, and do not require or imply any actual relationship between these entities or structures or order. The embodiments in this document are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other.

In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, not Indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms “installation”, “connection”, and “connection” should be understood in a broad sense, for example, it may be mechanical or electrical, or two. The internal communication of each element may be directly connected or indirectly connected through an intermediate medium. For a person of ordinary skill in the art, the specific meaning of the above terms can be understood according to specific circumstances.

According to a first aspect of an embodiment of the present invention, a water receiving tray is provided. FIG. 1 is a schematic diagram illustrating a wind direction between a water receiving tray and a heat exchanger according to an exemplary embodiment, and FIG. 2 is based on An exemplary embodiment shows a partial enlarged view between a water receiving tray and a heat exchanger. It can be seen in conjunction with FIGS. 1 and 2 that the water receiving tray includes side edges and a bottom surface, and the angle β between the side edges and the bottom surface Greater than 90 °, and the transition between the side and the bottom through an arc.

In the embodiment of the present invention, by setting the angle β between the side and the bottom of the water receiving tray 2 to be greater than 90 °, where the wind passes through the angle β, the wind resistance is reduced due to the arc transition between the side and the bottom, and Increased wind speed, increased wind speed and reduced wind resistance will increase the speed of guiding water to the drain hole, increase the drain speed of the water receiving tray 2, and thus improve the drainage efficiency of the outdoor unit of the air conditioner.

Among them, the increase in wind speed is because the area of the tuyere on the left side of the fin 11 is larger than the area of the tuyere on the right side of the fin 11. In the case of an equal amount of wind, the wind speed increases after passing through the fin 11.

In some alternative embodiments, the height a of the side is 0.5 times the width W of the fin 11 of the heat exchanger 1, and the deviation of the height a of the side is ± 0.5 mm.

By setting the height a of the side to 0.5 times the width of the fin 11 of the heat exchanger 1, the size of the side of the corresponding water receiving tray 2 is determined according to the width of the fin 11 of the heat exchanger 1, The water receiving tray 2 can be better matched with the fins 11 of the heat exchanger 1.

In some alternative embodiments, the height a of the side increases as the angle β increases.

In some alternative embodiments, for every increase of the angle β by 5 °, the height a of the side increases by 2 mm.

In some optional embodiments, the included angle is 95 ° ≦ β ≦ 120 °, the incremental tolerance is 5 °, and for every increase of the included angle β by 5 °, the height a of the side is increased by 2 mm.

In some optional embodiments, the value of the included angle β may be 100 °, 105 °, 110 °, 115 °. In some optional embodiments, the height a of the side is 8 mm or more and 18 mm or less.

In some alternative embodiments, the heights a of the sides are distributed in an equidistant sequence, with a tolerance of 2 mm.

In some optional embodiments, the value of the height a of the side may be 10, 12, 14, 16 mm.

In some optional embodiments, the width W of the fin 11 is determined according to the standard specifications in the air-conditioning outdoor unit industry, and is determined according to the parameters of the air-conditioning outdoor unit.

In some optional embodiments, the number of sides is 4, which are distributed around the periphery of the water receiving tray 2. The matching gap between the sides and the fins 11 is less than or equal to 2 mm, and is greater than or equal to 0.5 mm. If it is small, the water formed between the fins 11 and the side edges cannot be discharged into the drain hole of the water receiving tray 2 in time, which will eventually lead to poor drainage, and it is easier to freeze during low temperature heating, which affects the air conditioner outdoor unit. Thermal performance.

In addition, if the height a of the side is too small, the mold of the water receiving tray 2 will be difficult to form, and the supporting action surface of the fins 11 of the heat exchanger 1 will be reduced. The bottom hairpin tube of the fin 11 of 1 affects the heat exchange efficiency of the heat exchanger 1 and has a negative effect on the cooling and heating effects of the outdoor unit of the air conditioner.

The comparison table of the values of the side height a and the included angle β is shown in Table 1.

Table 1 Comparison table of values of a and β

Height α (mm)	Angle β (°)
8	95
10	100
12	105
14	110
16	115
18	120

Fig. 3 is a distribution diagram of a support boss according to an exemplary embodiment. As shown in Fig. 3, a support boss 21 is provided on the periphery of the water receiving tray 2, and the number of support bosses 21 is different from that of the heat exchanger 1. The length of the fin 11 is positively correlated.

In the embodiment of the present invention, by positively correlating the number of support bosses 21 with the length of the heat exchanger 1, the corresponding number of support bosses 21 can be matched according to the length of the fins 11 of the heat exchanger 1 to avoid The contact between the fins 11 and the support boss 21 is less and the heat exchanger 1 is damaged.

In the embodiment of the present invention, the support boss 21 provided on the periphery of the water receiving tray 2 is used to support the heat exchanger 1 to support and fix the heat exchanger 1. The connection way of the heat exchanger 1 and the support boss 21 is not limited. For example, in an alternative embodiment, a part of the pipeline of the fin 11 passes through the support boss 21.

In some alternative embodiments, the heat exchanger 1 is bent to form a plurality of straight-line fins 11, and the length L of each straight-line fin 11 is the same as the required support boss of the straight-line fin 11 The relationship of quantity n is as follows:

The unit of L is millimeter, and the unit of n is one.

In some optional embodiments, when the length is 2000 mm, the number of support bosses is 6-7; for every increase of 600 mm or less in length, the number of support bosses is increased by 1.

In some optional embodiments, when the length of the fin 11 of each straight section of the heat exchanger 1 is located in the interval (0-200), the number of the support bosses 21 is 1-2;

When the length of the fin 11 of each straight section of the heat exchanger 1 is located in the interval [200-600), the number of the support bosses 21 is 2-3;

When the length of the fin 11 of each straight section of the heat exchanger 1 is located in the interval [600-1000), the number of the support bosses 21 is 3-4;

When the length of the fin 11 of each straight section of the heat exchanger 1 is located in the interval [1000-1400), the number of the support bosses 21 is 4-5;

When the length of the fin 11 of each straight section of the heat exchanger 1 is located in the interval [1400-2000), the number of the support bosses 21 is 5-6;

When the length of the fin 11 of each straight section of the heat exchanger 1 is located in the interval [2000- +), the number of the support bosses 21 is equal to or greater than 6.

In some optional embodiments, when the length is in the interval [2000, + ∞], when the length is 2000, the number of support bosses is 6-7; for each increase of the length of 600 mm or less, the number of support bosses increases 1.

The unit of the above length is millimeter.

The number of support bosses 21 is selected according to the length of the fins 11 of each straight section of the heat exchanger 1, so that the number of support bosses 21 can be adapted to the number of fins 11 of each straight section of the heat exchanger 1 length.

In some alternative embodiments, the plurality of support bosses 21 are evenly distributed along the direction of the fins 11 of each straight segment.

By distributing the plurality of support bosses 21 at even intervals, the fins 11 of each straight section of the heat exchanger 1 can be uniformly supported.

In some alternative embodiments, the distribution shape of the support boss 21 is the same as the cross-sectional shape of the fin 11 of the heat exchanger 1.

FIG. 4 is a cross-sectional structure diagram of a fin according to an exemplary embodiment. As shown in FIG. 4, the heat exchanger 1 is bent into an L-shaped fin 11 having two straight segments, two The lengths of the fins 11 of each straight line segment are represented by L1 and L2, respectively, and the distribution shape of the corresponding support boss 21 is also L-shaped.

Fig. 5 is a structural view of a cross section of a fin according to another exemplary embodiment. As shown in Fig. 5, the heat exchanger 1 is bent into an arched fin 11 having three straight segments, The lengths of the fins 11 of the three straight segments are denoted by L1, L2, and L3, respectively, and the distribution shape of the corresponding support boss 21 is also arched.

Fig. 6 is a structural diagram of a cross-section of a fin according to yet another exemplary embodiment. As shown in Fig. 6, the heat exchanger 1 is bent into an unclosed mouth-shaped fin with four straight segments The lengths of the fins 11 and the fins 11 of the four straight line segments are denoted by L1, L2, L3, and L4, respectively, and the distribution shape of the corresponding support boss 21 is also an unclosed chevron shape.

Among them, the value range of L1, L2, L3, L4 and the number of selected support bosses 21 are determined according to the aforementioned scheme, that is, when L1, L2, L3 or L4 is located in the interval (0-200), the support convex The number of stations 21 is 1-2;

When L1, L2, L3 or L4 is located in the interval [200-600), the number of support bosses 21 is 2-3;

When L1, L2, L3 or L4 is located in the interval [600-1000), the number of support bosses 21 is 3-4;

When L1, L2, L3 or L4 is located in the interval [1000-1400), the number of supporting bosses 21 is 4-5;

When L1, L2, L3, or L4 is located in the interval [1400-2000), the number of support bosses 21 is 5-6.

When L1, L2, L3, or L4 is located in the interval [2000- +), the number of the support bosses 21 is greater than or equal to 6.

When the length of L1, L2, L3, or L4 is 2000, the number of support bosses is 6-7; for each increase of length of 600 mm or less, the number of support bosses increases by 1.

By selecting the number of support bosses 21 through such a scheme, it is possible to more effectively provide sufficient support force-bearing surfaces for the fins 11, effectively improve the support constraints of the heat exchanger 1, and ensure the heat exchange efficiency of the heat exchanger 1.

In some alternative embodiments, the length Y of the support boss 21 is 80-100 mm, the width M is 8-15 mm greater than the width W of the fin 11 of the heat exchanger 1, and the height is the side of the water receiving tray 2 Half of the height a.

In some alternative embodiments, the length Y of the support boss 21 is 90 mm, the width M is 10 mm greater than the width W of the fin 11 of the heat exchanger 1, and the height is the height a of the side of the water receiving tray 2 Half.

In some alternative embodiments, the length of the support boss 21 is 1.57-4.17 times its width.

By designing the size of the support boss 21, the support boss 21 and the fin 11 of the heat exchanger 1 can be better matched.

In some optional embodiments, the material of the support boss 21 is plastic or sheet metal material.

In some optional embodiments, the plastic material is not easily deformed, and the support boss 21 made of plastic material also has the characteristics of corrosion resistance and long service life.

In some optional embodiments, the support boss 21 made of sheet metal material has the characteristics of not easy to deform, high reliability, strong corrosion resistance and stability, and long service life.

In some optional embodiments, FIG. 7 is a distribution diagram of a drain hole according to an exemplary embodiment. As shown in FIG. 7, the bottom surface of the water receiving tray 2 is opposite to the fins 11 of the heat exchanger 1 Drain holes 22 are partially provided, and the number of drain holes 22 is plural.

In some optional embodiments, the diameter of the drain hole 22 is greater than or equal to 20 mm and less than or equal to 40 mm.

In some alternative embodiments, the total area of the plurality of drain holes 22 is 30% to 40% of the area of the bottom surface of the fin 11 of the heat exchanger 1.

After the diameter of the drain hole 22 is determined, the number of drain holes can be determined according to the total area of the drain holes 22 being 30% to 40% of the area of the bottom surface of the fin 11 of the heat exchanger 1.

If the total area of the plurality of drain holes 22 is less than 30% of the area of the bottom surface of the fins 11 of the heat exchanger 1, the water receiving tray 2 will not be able to drain the water in time. If the icing is too thick, it will ultimately affect the heating efficiency of the product; if the total area of the multiple drain holes 22 is greater than 40% of the bottom surface area of the fins 11 of the heat exchanger 1, it will affect the heat exchange efficiency of the heat exchanger 1 and cause air conditioning The energy efficiency ratio of the outdoor unit is reduced.

Among them, 30% and 40% are the data obtained after working conditions such as drainage test, defrosting test, and low temperature heating.

In some optional embodiments, the water receiving tray 2 is made of an aluminum-zinc plated steel plate, wherein the surface of the aluminum-zinc plated steel plate has an oxide layer.

In some alternative embodiments, the arrangement shape of the drain holes 22 is consistent with the cross-sectional shape of the fins 11 of the heat exchanger 1.

In some optional embodiments, the specific shape of the cross section of the drain hole 22 is not limited, and the cross section of the drain hole 22 is circular or rectangular or elliptical.

In some optional embodiments, when the cross-section of the drain hole 22 is circular, the diameter of the drain hole is greater than or equal to 20 mm and less than or equal to 40 mm;

When the cross section of the drain hole 22 is rectangular, the length and width of the drain hole are greater than or equal to 20 mm, and less than or equal to 40 mm;

When the cross section of the drain hole 22 is elliptical, the long axis and short axis of the drain hole are both greater than or equal to 20 mm and less than or equal to 40 mm.

In some optional embodiments, when the cross section of the drain hole 22 is circular, the diameter of the drain hole 22 is 30 mm;

When the cross section of the drain hole 22 is rectangular, the length of the drain hole is 30 mm and the width is 25 mm;

When the cross section of the drain hole 22 is elliptical, the long axis of the drain hole is 35 mm and the short axis is 28 mm.

In some alternative embodiments, the total area of the plurality of drain holes 22 is 35% of the cross-sectional area of the heat exchanger 1.

In some alternative embodiments, the intervals between the plurality of drain holes 22 are the same or different.

In some alternative embodiments, the center of the drain hole 22 is located on the center plane in the width direction of the fin 11 of the heat exchanger 1.

8 is a schematic diagram showing an explosion structure of a water receiving tray according to an exemplary embodiment. As shown in FIG. 8, the bottom surface of the water receiving tray 2 includes a first surface 23 and a second surface 24, and the height of the second surface 24 Below the height of the first face 23.

In some alternative embodiments, the first surface 23 is a reference surface, and the second surface 24 is used for drainage.

In some alternative embodiments, the drain hole 22 is provided on the second face 24, and the water flows out of the drain hole 22 on the second face 24.

In some alternative embodiments, the height of the second face 24 is 5-15 mm lower than the height of the first face 23.

In some alternative embodiments, the height of the second face 24 is 10 mm lower than the height of the first face 23.

In some optional embodiments, the electric heating tube 3 is further included, and the electric heating tube 3 is fixedly disposed on the bottom of the second surface 24.

In some alternative embodiments, the water receiving tray 2 further includes a fixing clip 4 for fixing the electric heating tube 3 on the second surface 24 of the water receiving tray 2;

In some alternative embodiments, screws may be used to fix the fixing clip 4 to the second surface 24 of the water receiving tray 2.

In some alternative embodiments, the second face 24 is the lowest face in the bottom of the water receiving tray 2 and the distance from the bottom of the fin 11 is 15-20 mm.

When the value is 15-20 mm, it can meet the efficient drainage of the outdoor unit of the air conditioner. If the distance is too small, it will cause the bottom of the fin 11 to be easily stored due to the small height difference under low-temperature heating The water freezes into ice, causing drainage blockage. In addition, after installing the electric heating tube 3, there is a problem of small installation space, and the electric heating tube 3 is easily contacted with the bottom of the fin 11 of the heat exchanger 1 to wear, causing damage; If the selection is too large, it will cause the mold of the water receiving tray 2 to be difficult to form, and it is necessary to use a deep-drawn drawing material with a higher cost to process the water receiving tray 2, resulting in a waste of material cost and mold cost.

9 is a partial enlarged view of an explosive structure of a water receiving tray according to an exemplary embodiment. As shown in FIG. Suitably, the limiting portion 41 is buckled outside the electric heating tube 3.

In some optional embodiments, when the electric heating tube 3 is a rectangular tube, the constraining surface of the limiting portion 41 is arched, which is adapted to the shape of the electric heating tube 3.

In some optional embodiments, when the electric heating tube 3 is a circular tube, the constraining surface of the limiting portion 41 is semicircular, and its diameter is larger than the outer diameter of the electric heating tube 3.

In some optional embodiments, the diameter of the constraining surface is 0.5-2 mm larger than the outer diameter of the electric heating tube 3, such as 1 mm, to achieve the cooperation between the constraining surface and the electric heating tube 3, if the size difference between the two If it is too large, the electric heating tube 3 will be subjected to excessive stress and deformation failure. If the size difference between the two is too small, the electric heating tube 3 will not be firmly fixed, causing shaking and vibration, resulting in electric heating Tube 3 is badly worn.

In some optional embodiments, the fixing clip 4 further includes a fixing hole 42 through which the screw fixes the fixing clip 4 on the second surface 24 of the water receiving tray 2.

In some optional embodiments, the number of the limiting portion 41 is one or more. When the number of the limiting portion 41 is multiple, the fixing and restraining of the multiple electric heating tubes 3 can be achieved at the same time. As shown in FIG. 9, the fixing clip is m-shaped, the arched portions on both sides serve as the limiting portion 41, and a fixing hole 42 is opened in the middle depression. The m-shaped fixing clip 4 is used to fix and restrain the two electric heating tubes 3.

In some optional embodiments, the water receiving tray 2 is further provided with a third surface 25; the third surface 25 is convexly disposed on part of the first surface 23.

In some alternative embodiments, the height difference between the third face 25 and the first face 23 is 5-15 mm.

In some alternative embodiments, the difference in height between the third face 25 and the first face 23 is 10 mm.

In some optional embodiments, the support bosses 21 are disposed on the first surface 23 at intervals.

In some alternative embodiments, the third surface 25 is located in the middle of the bottom surface of the water receiving tray 2.

In some optional embodiments, the first surface 23 is distributed in the middle and surrounding positions of the bottom surface of the water receiving tray 2, wherein the portion above the first surface 23 at the middle position of the bottom surface of the water receiving tray 2 is the third surface 25.

In some optional embodiments, the drain hole 22 and the electric heating tube 3 are both provided on the second surface 24, and their positions are the lowest, which facilitates the timely discharge of water.

The electric heating tube 3 is arranged on the second surface 24, which is convenient for quick defrosting of ice and expulsion as soon as the ice turns into water.

Fig. 10 is a schematic diagram of an assembly structure of a water receiving tray according to an exemplary embodiment. As shown in Fig. 10, a heat exchanger 1 is installed above the water receiving tray 2, and fins 11 of the heat exchanger 1 are fixed On the support boss 21, the wind generated by the fan 5 enters the water receiving tray 2 through the heat exchanger 1, blows the water toward the drain hole 22, and is discharged through the drain hole 22.

According to a second aspect of the embodiments of the present invention, there is provided an outdoor unit for an air conditioner, the outdoor unit for an air conditioner having the water receiving tray 2 mentioned above.

The present invention is not limited to the structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is only limited by the appended claims.

Claims (9)

1. A water receiving tray is provided below the fins of a heat exchanger, and is characterized in that a drain hole is provided on the bottom surface of the water receiving tray corresponding to the fins of the heat exchanger, The arrangement shape of the drain holes is consistent with the cross-sectional shape of the fins of the heat exchanger.
2. The water receiving tray according to claim 1, wherein the cross section of the drain hole is circular, rectangular or elliptical.
3. The water receiving tray according to claim 2, wherein when the cross-section of the drain hole is circular, the diameter of the drain hole is greater than or equal to 20 mm and less than or equal to 40 mm;

   When the cross section of the drain hole is rectangular, the length and width of the drain hole are greater than or equal to 20 mm, and less than or equal to 40 mm;

   When the cross section of the drainage hole is elliptical, the long axis and the short axis of the drainage hole are both greater than or equal to 20 mm and less than or equal to 40 mm.
4. The water receiving tray according to claim 3, wherein when the cross section of the drain hole is circular, the diameter of the drain hole is 30 mm;

   When the cross section of the drainage hole is rectangular, the length of the drainage hole is 30 mm and the width is 25 mm;

   When the cross section of the drain hole is elliptical, the long axis of the drain hole is 35 mm and the short axis is 28 mm.
5. The water receiving tray according to claim 1, wherein the total area of the plurality of drain holes is 30% to 40% of the cross-sectional area of the heat exchanger.
6. The water receiving tray according to claim 5, wherein the total area of the plurality of drain holes is 35% of the cross-sectional area of the heat exchanger.
7. The water receiving tray according to claim 1, wherein the intervals between the plurality of drain holes are the same or different.
8. The water receiving tray according to claim 1, wherein the center of the drain hole is located on the center plane in the width direction of the heat exchanger.
9. An air-conditioning outdoor unit, characterized in that the air-conditioning outdoor unit includes the water receiving tray according to any one of claims 1 to 8.

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