Air conditioner

Abstract

The utility model discloses an air conditioner, including water collecting tray, drain valve and heating pipe, and water collecting tray has water collecting groove and drain port, and the drain port is linked with water collecting groove, the drain valve is located at the drain port, and the drain valve is used for controlling the switch of drain port, the heating pipe is located in water collecting groove, and the extension path of heating pipe is configured as heating pipe can heat -transfer to drain port, according to the air conditioner of the utility model, through setting heating pipe in water collecting groove, and the path of heating pipe is set as can heat at drain port, to can solve the problem of drain port ice block, guarantee water collecting groove drainage smooth, improved the controllability and stability of air conditioner drainage system. In addition, through setting drain valve at the drain port, can drain when needing to drain, when not needing to drain, water storage. Moreover, heating pipe can solve the problem that the sealing portion of drain valve and drain port freeze together, cannot open drain port, further guarantee reliable drainage.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air conditioner. Background Technology

[0002] Air conditioners in related technologies typically have a drain outlet on the chassis, which is always open to drain water collected in the chassis. However, in low-temperature environments, the drain outlet is prone to ice blockage, meaning that the drain outlet is easily blocked by ice, resulting in poor drainage. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an air conditioner that improves the reliability of water drainage from the collection tank through the drain outlet by incorporating a heating element, and by installing a drain valve at the drain outlet, allows for drainage when needed and water storage when not required.

[0004] An air conditioner according to an embodiment of the present invention includes: a water collection tray, a drain valve, and a heating element. The water collection tray has a water collection trough and a drain outlet. The drain outlet is connected to the water collection trough. The drain valve is located at the drain outlet and is used to control the opening and closing of the drain outlet. The heating element is located in the water collection trough, and the extension path of the heating element is configured such that the heating element can transfer heat to the drain outlet.

[0005] According to an embodiment of this utility model, the air conditioner solves the problem of ice blockage at the drain outlet by installing a heating element in the water collection tank and configuring the path of the heating element to heat the drain outlet. This ensures smooth drainage from the water collection tank and improves the controllability and stability of the air conditioner's drainage system. Furthermore, by installing a drain valve at the drain outlet, water can be drained when needed and stored when not needed. Moreover, the heating element's heating of the drain outlet prevents the drain valve's sealing portion from freezing to the drain outlet, further ensuring reliable drainage.

[0006] In some embodiments, the heating tube includes a first extension and a second extension that extend in a folded-back manner, and the drain outlet is located between the first extension and the second extension.

[0007] In some embodiments, the air conditioner includes a heat exchanger and a fan disposed above the water collection tray, the fan and the heating tube being located on the air outlet side of the heat exchanger, the first extension extending along the bottom long side of the heat exchanger, and the second extension extending from below the fan.

[0008] In some embodiments, the air conditioner includes a heat exchanger disposed above the water collection tray, the two ends of the bottom long side of the heat exchanger being a first end and a second end, a first extension extending from the first end along the bottom long side of the heat exchanger to the second end, a second extension disposed on the side of the first extension away from the heat exchanger, the second extension being connected to the first extension near the second end and spaced apart near the first end.

[0009] In some embodiments, two drain outlets are provided between the first extension and the second extension, and the two drain outlets are respectively located near the first end and the second end.

[0010] In some embodiments, the water collection tray is provided with a boss located between the first extension and the second extension and between the two drain outlets, and the air conditioner includes a fan supported on the boss.

[0011] In some embodiments, the heating tube is wound around the drain outlet.

[0012] In some embodiments, the heating tube is routed from one radially opposite side of the drain outlet to the radially opposite side of the drain outlet.

[0013] In some embodiments, the drain outlet penetrates the bottom plate of the water collection tray, the drain valve includes two mounting feet, the two mounting feet are supported on the bottom plate, the direction of the line connecting the two mounting feet is the length direction of the drain valve, the direction perpendicular to the length direction and the vertical direction of the drain valve is the width direction of the drain valve, and the heating tube is wound from one side of the width direction of the drain valve to the other side of the width direction of the drain valve.

[0014] In some embodiments, the heating tube on at least one side of the drain valve in the width direction extends along the length direction of the drain valve.

[0015] In some embodiments, the water collection tray is adapted to be located on the outdoor side, the air conditioner is a heat pump air conditioner, and includes a heat exchanger located above the water collection tray, wherein the extension path of the heating pipe is configured such that the heating pipe can transfer heat to the heat exchanger.

[0016] In some embodiments, the heating tube is disposed on the air outlet side of the heat exchanger, the two ends of the bottom long side of the heat exchanger are a first end and a second end, respectively, the heating tube includes a first extension section, the first extension section extends from the first end along the bottom long side of the heat exchanger to the second end, the distance between the first extension section and the heat exchanger is less than the thickness of the heat exchanger and / or not greater than twice the diameter of the heating tube.

[0017] In some embodiments, the water collection tray is provided with a boss, the boss being disposed above the first extension section, and the air conditioner includes a fan disposed above the water collection tray, the fan being supported on the boss and partially located directly above the first extension section.

[0018] In some embodiments, the heating tube further includes a second extension located on the side of the boss away from the first extension, and the fan includes an axial flow impeller with its axis horizontally oriented, the second extension extending directly below the axial flow impeller.

[0019] In some embodiments, the air conditioner includes a fan disposed above the water collection tray, the fan including an axial flow impeller with its axis horizontally oriented, and the heating tube extending directly below the axial flow impeller.

[0020] In some embodiments, the heating element is a hot gas bypass pipe drawn upstream of the throttling device in the refrigerant circulation system of the air conditioner.

[0021] In some embodiments, the drain valve is a temperature-controlled drain valve; and / or, the drain valve switches the drain outlet via a movable plug, the plug being a conical elastic element.

[0022] In some embodiments, the air conditioner is a window air conditioner, which includes an indoor unit and an outdoor unit, the water collection tray is the chassis of the outdoor unit, the indoor unit has a water collection trough, and the water collection trough is connected to the water collection trough through a drainage path; or, the air conditioner is a split air conditioner, which includes an indoor unit and an outdoor unit, and the water collection tray is the chassis of the outdoor unit.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the chassis of an air conditioner according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 A top view of the chassis of the air conditioner shown;

[0027] Figure 3 yes Figure 1 Enlarged view of point A shown in the image;

[0028] Figure 4 This is a schematic diagram of the chassis and heat exchanger of an air conditioner according to an embodiment of the present invention;

[0029] Figure 5 yes Figure 4 The top view of the air conditioner chassis and heat exchanger shown;

[0030] Figure 6 yes Figure 5 The cross-sectional view of BB shown;

[0031] Figure 7 This is a cross-sectional view of a window air conditioner according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of a split-type air conditioner according to an embodiment of the present invention.

[0033] Figure label:

[0034] Air conditioner 100; length direction of drain valve F1; width direction of drain valve F2;

[0035] Split-type air conditioner 100b; Indoor unit 30; Outdoor unit 40;

[0036] Window air conditioner 100a; Indoor unit 10; Water collection tray 101; Drainage path 102; Outdoor unit 20;

[0037] Water collection tray 1;

[0038] Water collection tank 11; drain outlet 12; boss 13; base plate 14;

[0039] Drain valve 2; Mounting foot 21; Plug 22;

[0040] Heating element 3; First extension section 31; Second extension section 32;

[0041] Heat exchanger 4; First end 4a; Second end 4b;

[0042] Fan 5; Axial flow fan 51. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0044] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0045] Hereinafter, with reference to the accompanying drawings, an air conditioner 100 according to an embodiment of the present utility model will be described.

[0046] refer to Figure 1 and Figure 2 The air conditioner 100 includes a water collection tray 1, which has a water collection trough 11 and a drain outlet 12, and the drain outlet 12 is connected to the water collection trough 11.

[0047] The water collection tray 1 can be the chassis of the air conditioner 100 or a separate component installed inside the air conditioner 100. For example, the independent water collection tray 1 can be located on the chassis or under the heat exchanger.

[0048] The water collection trough 11 can be formed by the water collection pan 1 itself. For example, the water collection trough 11 can be partially pressed into the water collection pan 1. The water collection trough 11 can also be a separate component set on the water collection pan 1 and fixed to the water collection pan 1 by welding, hot melt bonding or the like. The drain outlet 12 can be formed on the side or bottom of the water collection trough 11.

[0049] refer to Figure 1 and Figure 2 The air conditioner 100 also includes a drain valve 2, which is located at the drain outlet 12. The drain valve 2 is used to control the opening and closing of the drain outlet 12. That is, the drain valve 2 can at least control the opening and closing state of the drain outlet 12. Of course, the function of the drain valve 2 is not limited to this; for example, it can also be used to control the opening degree of the drain outlet 12. The form of the drain valve 2 is not limited; for example, it can be an electromagnetic drain valve, an electric drain valve, a manual drain valve, etc. Thus, by setting the drain valve 2, water can be drained when drainage is needed and stored when drainage is not needed.

[0050] For example, when used in a window air conditioner 100a, the water collection tray 1 can be the chassis of the outdoor unit 20 of the window air conditioner 100a. In summer, the drain valve 2 closes the drain outlet 12, and the water flowing into the water collection tank 11 (e.g., the condensate discharged from the indoor unit 10 of the window air conditioner 100a) is accumulated to cool the outdoor heat exchanger 4 and improve its cooling capacity. For example, the impeller of the fan 5 of the outdoor unit 20 can be used to strike the condensate in the water collection tank 11, and the condensate can be thrown or splashed onto the surface of the outdoor heat exchanger 4 to assist its heat dissipation. Alternatively, the condensate in the water collection tank 11 can be drawn in and sprayed onto the surface of the outdoor heat exchanger 4 through a spray system to assist its heat dissipation. Of course, a hot gas bypass pipe of the refrigerant circulation system of the window air conditioner 100a can also be installed in the water collection tank 11. The hot gas bypass pipe is immersed in the condensate to assist heat dissipation and improve the cooling and heat exchange efficiency of the air conditioner 100. For example, when used in a split-type air conditioner 100b, the water collection tray 1 can be the chassis of the outdoor unit 40 of the split-type air conditioner 100b, and can also store water to improve cooling capacity.

[0051] For example, when used in a window air conditioner 100a of the heat pump type, the water collection tray 1 can be the chassis of the outdoor unit 20 of the window air conditioner 100a. In winter, the drain valve 2 opens the drain outlet 12, and the water flowing into the water collection tank 11 (e.g., defrost water from the outdoor heat exchanger 4 or rainwater) can be discharged to the outdoor environment through the drain outlet 12, avoiding the risk of the water collection tank 11 freezing in winter and colliding with the lower part of the fan impeller of the fan 5, causing noise and damage. For example, when used in a split air conditioner 100b, the water collection tray 1 can be the chassis of the outdoor unit 40 of the split air conditioner 100b, which can achieve the same effect, and will not be described in detail here.

[0052] refer to Figure 1 and Figure 2 The air conditioner 100 also includes a heating element 3, which is disposed within the water collection tank 11. The extension path of the heating element 3 is configured to transfer heat to the drain outlet 12. That is, the extension path of the heating element 3 can pass through the periphery of the drain outlet 12, thereby heating the drain outlet 12 through thermal radiation. The periphery refers to the area where the heating element 3 can melt the ice at the drain outlet 12 through thermal radiation. The specific size of the periphery can be determined through experiments or simulation calculations based on factors such as the heating temperature of the heating element 3, the structure of the water collection tank 1, and the actual outdoor environment in which the air conditioner 100 is used. The type of heating element 3 is not limited; for example, it can be a hot gas bypass pipe in the refrigerant circulation system of the air conditioner 100, or it can be an electric heating element, etc.

[0053] Therefore, by installing a heating pipe 3 inside the water collection tank 11, the problem of ice formation inside the water collection tank 11 can be solved. By extending the heating pipe 3, heat can be transferred from the heating pipe 3 to the drain outlet 12, thus solving the problem of ice blockage at the drain outlet 12. This prevents the drain outlet 12 from freezing and causing blockage and poor drainage, ensuring that water flowing into the water collection tank 11 (such as defrosting water or rainwater from the outdoor heat exchanger 4) can be discharged to the outdoor environment through the drain outlet 12, improving drainage reliability. Moreover, by heating the drain outlet 12, the heating pipe 3 can solve the problem of the sealing part of the drain valve 2 (i.e., the part used to seal the drain outlet 12, such as the plug 22) freezing to the drain outlet 12, making it impossible to open the drain outlet 12, further ensuring reliable drainage.

[0054] For example, in summer, the window air conditioner 100a uses the impeller of the fan 5 of the outdoor unit 20 to knock down the condensate in the water collection tank 11. In winter, the heat radiation from the heating pipe 3 melts the ice in the water collection tank 11 (such as the ice under the impeller of the fan 5 and the ice at the defrost water collection point of the outdoor heat exchanger 4) and the ice at the drain outlet 12, thereby emptying the water collection tank 11 and reducing the risk of noise and damage caused by the lower part of the fan 5 colliding with the accumulated ice.

[0055] In the technical solution of this application, the drain valve 2 is set at the drain outlet 12 to control the opening and closing of the drain outlet 12. This allows the drain outlet 12 to be closed when water storage is needed, and opened when drainage is needed, improving the controllability and reliability of the air conditioner 100's drainage system. The heating pipe 3 is set inside the water collection tank 11, with its extension path passing around the drain outlet 12. This heats the drain outlet 12, solving the problems of ice blockage and freezing to the drain valve 2, ensuring smooth drainage and further improving the controllability and stability of the air conditioner 100's drainage system. By placing the heating pipe 3 inside the water collection tank 11 and its extension path passing around the drain outlet 12, while the drain valve 2 is located at the drain outlet 12, the space of the water collection tray 1 is fully utilized, making the entire drainage and anti-icing system compact and highly reliable. This design does not excessively occupy other internal space of the air conditioner 100, facilitating the overall miniaturization and integration of the air conditioner 100.

[0056] In the embodiments of this application, the number of drain outlets 12 provided with drain valve 2 and which can be heated by heating pipe 3 is not limited, and can be one or more. For example, there can be 1, 2, 3, 4, etc. Of course, in other embodiments of this application, other holes for draining water can also be provided on the water collection tray 1, and these holes may not be heated by heating pipe 3.

[0057] When there is only one drain outlet 12, the structure is relatively simple. It can meet the basic drainage function and effectively prevent the drain outlet 12 from freezing and blocking 22 through the heating pipe 3, ensuring the normal operation of the air conditioner 100 in low-temperature environments. At the same time, it reduces manufacturing costs and structural complexity. If multiple drain outlets 12 are set, more flexible and efficient drainage can be achieved according to the drainage situation of different parts of the air conditioner 100 and the distribution of water in the water collection pan 1. For example, when the area of ​​the water collection pan 1 is large or the amount of condensate generated in different areas varies significantly, multiple drain outlets 12 can be set in appropriate positions to speed up the drainage and avoid excessive local water accumulation.

[0058] In some embodiments of this application, the heating pipe 3 is arranged around the drain outlet 12. That is, the heating pipe 3 extends around the drain outlet 12, or in other words, the heating pipe 3 is arranged in a circle around the drain outlet 12. Thus, the heating pipe 3 is not located on one side of the drain outlet 12, but is distributed on multiple sides of the drain outlet 12, extending from one side of the drain outlet 12 to the other sides, for example, around the drain outlet 12 in partial, half, more than half, or full circles. This allows multiple sides of the drain outlet 12 to receive heat radiation from the heating pipe 3, enabling the heat generated by the heating pipe 3 to act more concentratedly and effectively on the area surrounding the drain outlet 12, quickly resolving the ice blockage problem of the drain outlet 12, allowing the drain outlet 12 to drain smoothly, thereby further improving the reliability of the air conditioner 100 under low-temperature conditions. In other words, this arrangement of the heating pipe 3 increases the heat radiation area and / or heat conduction area of ​​the heating pipe 3 to the water or ice around the drain outlet 12, thereby more effectively preventing water from freezing at the drain outlet 12 and improving the drainage reliability of the air conditioner 100.

[0059] It is worth noting that for air conditioners 100 with different power and size, their specific drainage and anti-icing requirements can be met by changing the number of drain outlets 12 and the way the heating tube 3 surrounds the drain outlet 12. For example, the way the heating tube 3 extends around the drain outlet 12 can be U-shaped, concentric circular or eccentric with the drain outlet 12 as the center, parallel bidirectional, semi-enclosed, fully enclosed, etc., so that it can be subjected to heat radiation from the heating tube 3 and solve the ice blockage problem of the drain outlet 12.

[0060] Of course, the extension path of the heat pipe 3 is configured so that the heating pipe 3 can transfer heat to the drain outlet 12, not limited to "the heating pipe 3 extends around the drain outlet 12". For example, the heating pipe 3 can also be set to an open form, with the heating pipe 3 only passing through one side of the drain outlet 12, and the drain outlet 12 can also be de-iced by unilateral heat radiation.

[0061] It is worth noting that when there are multiple drain outlets 12, there can be one or more heating tubes 3. One heating tube 3 can surround one drain outlet 12, or one heating tube 3 can surround multiple drain outlets 12. When one heating tube 3 surrounds multiple drain outlets 12, the heating tube 3 can form one or more looping areas. When only one looping area is formed, one drain outlet 12 is placed in that looping area. When multiple looping areas are formed, each looping area can have its own drain outlet 12. It is also worth noting that during the winding process, the winding path of the heating tube 3 can be close to the edge of the drain outlet 12, but it can also have a certain interval depending on the heating requirements and spatial layout. The number of times the heating tube 3 wraps around the drain outlet 12 is unlimited; it can be one loop or multiple loops.

[0062] refer to Figure 1 and Figure 2 In some embodiments, the heating tube 3 includes a first extension segment 31 and a second extension segment 32 extending in the opposite direction, with a drain outlet 12 located between the first extension segment 31 and the second extension segment 32. That is, the heating tube 3 surrounds the drain outlet 12 via the first extension segment 31 and the second extension segment 32 extending in the opposite direction. Here, "extension in the opposite direction" refers to extending in the opposite direction. For example, if the first extension segment 31 extends from left to right along a straight line or curve, then the second extension segment 32 extends from right to left along a straight line or curve, with the right end of the first extension segment 31 connected to the right end of the second extension segment 32. As another example, if the first extension segment 31 extends from right to left, then the second extension segment 32 extends from left to right, with the left end of the first extension segment 31 connected to the left end of the second extension segment 32.

[0063] In the above technical solution, the heating tube 3 uses a first extension section 31 and a second extension section 32 that extend in reverse to encircle the drain outlet 12, so that the heating tube 3 can heat the area around the drain outlet 12 from at least both sides of the drain outlet 12. This makes the water or ice around the drain outlet 12 more evenly heated, reducing the possibility of the other side not equipped with the heating tube 3 freezing due to excessively low temperature caused by unilateral heating, effectively preventing the drain outlet 12 from freezing due to localized low water temperature, improving the reliability of drainage, and thus enabling the air conditioner 100 to operate normally in low-temperature environments.

[0064] Furthermore, the heating tube 3 uses a first extension section 31 and a second extension section 32 that extend in reverse to encircle the drain outlet 12. The length, angle, and folding position of the first extension section 31 and the second extension section 32 can be reasonably adjusted according to factors such as the shape and size of the water collection tank 11 and the position of the drain outlet 12. Moreover, the structure is simple and easy to process, which allows the heating tube 3 to better adapt to different air conditioner 100 structures and spatial layouts, improving the versatility and adaptability of the technical solution, and enabling it to be widely used in various types of air conditioner 100 products.

[0065] refer to Figure 4 and Figure 5 In some embodiments, the air conditioner 100 includes a heat exchanger 4 and a fan 5 disposed above the water collection tray 1. Both the fan 5 and the heating pipe 3 are located on the air outlet side of the heat exchanger 4. A first extension section 31 extends along the long bottom side of the heat exchanger 4, and a second extension section 32 extends from below the fan 5. For example, the fan 5 includes an axial flow impeller 51 with its axis horizontally positioned, and the second extension section 32 extends from below the axial flow impeller 51. The bottom of the heat exchanger 4 is elongated, including two long sides disposed on both sides of its bottom width, one of which is the long bottom side of the heat exchanger 4.

[0066] In the above technical solution, the first extension section 31 extends along the long bottom side of the heat exchanger 4, which helps to solve the problem of defrosting water freezing in the heat exchanger 4. The second extension section 32 extends from below the fan 5, which helps to avoid the problem of ice forming below the fan 5 colliding with the impeller of the fan 5. By placing both the fan 5 and the heating pipe 3 on the air outlet side of the heat exchanger 4, with the first extension section 31 extending along the long bottom side of the heat exchanger 4 and the second extension section 32 extending from below the fan 5, and the drain outlet 12 located between the first extension section 31 and the second extension section 32, the overall structure is made more compact, achieving a reliable defrosting and drainage effect.

[0067] refer to Figure 4 and Figure 5 In some embodiments, the air conditioner 100 includes a heat exchanger 4 disposed above the water collection tray 1. The two ends of the bottom long side of the heat exchanger 4 are a first end 4a and a second end 4b, respectively. A first extension section 31 extends from the first end 4a along the bottom long side of the heat exchanger 4 to the second end 4b. A second extension section 32 is disposed on the side of the first extension section 31 away from the heat exchanger 4. The second extension section 32 is connected to the first extension section 31 near the second end 4b and is spaced apart near the first end 4a.

[0068] In the above technical solution, the first extension section 31 of the heating tube 3 extends from the first end 4a to the second end 4b along the length of the bottom surface of the heat exchanger 4, allowing the heating tube 3 to cover a larger area and further increasing the distribution range of the heating tube 3 in the water collection tank 11, thereby forming a relatively wide heating area, which can more fully heat the water collection tank 11 and effectively prevent ice formation in the water collection tank 11. The second extension section 32 is located on the side of the first extension section 31 away from the heat exchanger 4, and is connected to the first extension section 31 near the second end 4b and spaced apart from the first end 4a, so that a larger space can be formed between the second extension section 32 and the first extension section 31, which is conducive to setting more drain outlets 12 between the second extension section 32 and the first extension section 31. When the air conditioner 100 is a heat pump system, during the heating operation, the heat exchanger 4 will perform a defrosting operation, and the generated defrosting water will drip into the water collection tank 11. The first extension 31 of the heating tube 3 extends from the first end 4a to the second end 4b along the length of the bottom surface of the heat exchanger 4, thereby enabling the heating tube 3 to heat the heat exchanger 4 over a large area along its length. The arrangement of the heating tube 3 in this technical solution allows it to heat the dripping defrost water in a timely manner, keeping it in a liquid state, reducing the possibility of clogging the drain outlet 12 due to freezing, ensuring the smooth operation of the drainage system, and improving the stability and reliability of the air conditioner 100 in heat pump operation mode.

[0069] refer to Figure 4 and Figure 5 In some embodiments, two drain outlets 12 are provided between the first extension 31 and the second extension 32, and the two drain outlets 12 are respectively located near the first end 4a and the second end 4b. That is, one drain outlet 12 is near the first end 4a, and the other drain outlet 12 is near the second end 4b.

[0070] In the above technical solution, two drain outlets 12 are provided, which serve as backups for each other. Even if one drain outlet 12 becomes blocked by ice, the other drain outlet 12 can still drain water, thus enhancing the drainage reliability of the water collection tank 11. Moreover, space can be saved between the two drain outlets 12 to arrange other structures.

[0071] In the embodiments of this application, the shape of the drain outlet 12 is not limited. For example, the drain outlet 12 can be a circular drain outlet, a square drain outlet, an elliptical drain outlet, etc.

[0072] refer to Figure 4 and Figure 5In some embodiments, the water collection tray 1 is provided with a boss 13, which is located between the first extension section 31 and the second extension section 32, and between the two drain outlets 12 between the first extension section 31 and the second extension section 32. The air conditioner 100 includes a fan 5 supported on the boss 13. The boss 13 may be constructed from the water collection tray 1 itself, for example, it may be formed by stamping the water collection tray 1. The boss 13 may also be a separate component, for example, the boss 13 may be connected to the surface by welding, hot melt bonding, or other connection methods.

[0073] In the above technical solution, the fan 5 can be positioned close to the heat exchanger 4, making full use of the limited space above the water collection tray 1, reducing the spacing between components, and improving the compactness of the internal structure of the air conditioner 100; the boss 13 is located between the two drain outlets 12, that is, the two drain outlets 12 are set on both sides of the boss 13, which naturally avoids the position of the fan 5, thereby reducing the restriction of the position of the drain outlets 12 on the position of the fan 5, and also ensuring that the fan 5 will not obstruct the operation of the drain outlets 12 when it is working, thus ensuring the independent and stable operation of the drainage system and the fan 5 system.

[0074] In the above technical solution, a boss 13 is provided on the water collection tray 1, and a fan 5 is supported on the boss 13. The boss 13 is located between the first extension section 31 and the second extension section 32, so that the bottom of the fan 5 can rely on the thermal radiation of the second extension section 32 to melt ice. Therefore, in winter, ice formation under the fan 5 can be reduced, and the risk of noise and damage caused by the impeller of the fan 5 colliding with ice can be reduced. In addition, placing the fan 5 on the boss 13 instead of directly on the water collection tray 1 can prevent the bottom of the fan 5 from contacting the water in the water collection tray 1 and causing corrosion.

[0075] refer to Figure 1 and Figure 2 In some embodiments, the heating pipe 3 extends from one radial side of the drain outlet 12 to the opposite radial side of the drain outlet 12, that is, heating pipes 3 extend from both sides of the drain outlet 12 in the diametrical direction. This allows the heat from the heating pipe 3 to be transferred more directly to the drain outlet 12, increasing the heat radiation area and / or heat conduction area of ​​the heating pipe 3 on the water or ice surrounding the drain outlet 12. This enables the heat generated by the heating pipe 3 to more effectively prevent the drain outlet 12 from freezing, thereby ensuring smooth and reliable drainage of the drain outlet 12 and improving the operational stability of the air conditioner 100 under low-temperature conditions.

[0076] refer to Figure 3In some embodiments, the drain outlet 12 penetrates the bottom plate 14 of the water collection tray 1. The drain valve 2 includes two mounting feet 21, which are supported on the bottom plate 14. The direction of the line connecting the two mounting feet 21 is the length direction F1 of the drain valve 2. The direction perpendicular to the length direction F1 and the vertical direction of the drain valve 2 is the width direction F2 of the drain valve 2. The heating tube 3 is wound from one side of the width direction F2 of the drain valve 2 to the other side of the width direction F2 of the drain valve 2 to encircle the drain outlet 12 corresponding to the drain valve 2.

[0077] In the above technical solution, the drain outlet 12 penetrates the bottom plate 14 of the water collection tray 1, thus forming a shorter drainage path 102. Compared with the drain outlet 12 being set on the side plate of the water collection tray 1, the drain outlet 12 penetrates the bottom plate 14 of the water collection tray 1, allowing drainage by gravity. The drainage path 102 is short, simple, and reliable, and the condensate or defrost water generated by the heat exchanger 4 can be smoothly discharged from the water collection tray 1, reducing water accumulation in the water collection tray 1. The heating pipe 3 is routed from one side of the width of the drain valve 2 to the other side, making full use of the space around the drain valve 2, and ensuring that the installation of the drain valve 2 and the surrounding arrangement of the heating pipe 3 do not conflict. Without occupying too much internal space of the water collection tray 1, effective heating of the drain outlet 12 is achieved. The structure is compact and the installation is simple.

[0078] The heating tube 3 is wound from one side of the width of the drain valve 2 to the other side of the width of the drain valve 2, so as to encircle the drain outlet 12 corresponding to the drain valve 2, so that a relatively stable heating area is formed around the drain outlet 12, reducing the risk of freezing caused by excessively low temperature in the area around the drain outlet 12, thereby enhancing the stability of the entire drainage system.

[0079] refer to Figure 3 In some embodiments, at least one heating pipe 3 on the width direction F2 of the drain valve 2 extends along the length direction F1 of the drain valve 2. Exemplarily, the heating pipe 3 on one side of the width direction F2 of the drain valve 2 may extend along the length direction F1 of the drain valve 2, or the heating pipes 3 on both sides of the width direction F2 of the drain valve 2 may extend along the length direction F1 of the drain valve 2. The extension of the heating pipe 3 along the length direction F1 of the drain valve 2 may be parallel to the length direction F1 of the drain valve 2, or it may be substantially parallel to the length direction F1 of the drain valve 2.

[0080] In the above technical solution, the heating pipe 3 extends along the length direction F1 of the drain valve 2 on at least one side of the width direction F2 of the drain valve 2, which allows the heat of the heating pipe 3 to be distributed more widely and evenly around the drain valve 2. When the air conditioner generates condensate or defrost water, the temperature around the drain valve 2 is more uniform, making it less likely for the water around the drain valve 2 to freeze when it flows to the drain outlet 12, and also making it easier to defrost, ensuring that the drain outlet 12 is unobstructed and improving the reliability of the drainage system in low-temperature environments.

[0081] refer to Figure 2 In some embodiments, the distance between the portion of the heating element 3 surrounding the drain outlet 12 and the drain outlet 12 is less than twice the diameter of the drain valve 2. This allows the heat emitted by the heating element 3 to be more concentrated on the area around the drain outlet 12. In low-temperature environments, when the air conditioner produces condensate or defrost water, the smaller distance between the portion of the heating element 3 surrounding the drain outlet 12 and the drain outlet 12 ensures rapid heating around the drain outlet 12, effectively preventing water from freezing at the drain outlet 12 and facilitating defrosting at the drain outlet 12. This ensures unobstructed drainage and improves the operational reliability of the air conditioner under low-temperature conditions.

[0082] Furthermore, the reasonable spacing setting optimizes the use of space inside the water collection tray 1 while meeting heating requirements. It avoids excessive heat loss and low heating efficiency due to the heating pipe 3 being too far from the drain outlet 12, and also avoids affecting the normal installation and drainage function of the drain valve 2 due to the distance being too close.

[0083] refer to Figure 4 and Figure 5 In some embodiments, the water collection tray 1 is adapted to be located on the outdoor side, the air conditioner 100 is a heat pump air conditioner, and includes a heat exchanger 4 located above the water collection tray 1. The extension path of the heating pipe 3 is configured such that the heating pipe 3 can transfer heat to the heat exchanger 4. That is, the heating pipe 3 and the heat exchanger 4 can exchange heat through heat conduction, convection or radiation, as long as the heat from the heating pipe 3 can be transferred to the heat exchanger 4, whether the heating pipe 3 and the heat exchanger 4 are in contact or not is not necessary.

[0084] In the above technical solution, the air conditioner 100 is a heat pump air conditioner. When the outdoor ambient temperature is low, the air conditioner 100 is in heating mode. During the operation of the heating mode, the heat exchanger 4 will perform defrosting operation. In addition, the heating pipe 3 can also assist the heat exchanger 4 in performing defrosting operation and prevent defrosting water from freezing. Specifically, the frost on the heat exchanger 4 melts into defrosting water, and the generated defrosting water will drip into the water collection tank 11. The heating pipe 3 is located in the water collection tank 11, so that the heating pipe 3 can heat the dripping defrosting water in time to keep it in a liquid state, reducing the possibility of the defrosting water freezing and clogging the drain outlet 12. When the outdoor ambient temperature is high, the air conditioner 100 is in cooling mode. The condensate produced by the indoor heat exchanger 4 can be collected and stored in the water collection tank 11. The heating pipe 3 is located in the water collection tank 11. If the heating pipe 3 adopts a hot gas bypass pipe, it can be immersed in the condensate water to dissipate heat, thereby improving the cooling and heat exchange efficiency of the air conditioner 100. In addition, the condensate stored in the water collection tank 11 can be used to directly dissipate heat to the outdoor heat exchanger 4. For example, the fan wheel of the fan 5 of the outdoor unit 20 can be used to strike the condensate in the water collection tank 11 and throw or splash the condensate onto the surface of the outdoor heat exchanger 4 to assist its heat dissipation. For example, the condensate in the water collection tank 11 can also be drawn in and sprayed onto the surface of the outdoor heat exchanger 4 by setting up a spray system to assist its heat dissipation.

[0085] refer to Figure 4 and Figure 5 In some embodiments, the heating tube 3 is located on the air outlet side of the heat exchanger 4. The two ends of the bottom long side of the heat exchanger 4 are the first end 4a and the second end 4b, respectively. The heating tube 3 includes a first extension section 31, which extends from the first end 4a along the bottom long side of the heat exchanger 4 to the second end 4b. The distance L2 between the first extension section 31 and the heat exchanger 4 is less than the thickness L3 of the heat exchanger 4, and / or the distance L2 between the first extension section 31 and the heat exchanger 4 is not greater than twice the diameter D of the heating tube 3.

[0086] In the above technical solution, the heating tube 3 is located on the air outlet side of the heat exchanger 4, which facilitates the sealing design of the bottom of the heat exchanger 4. For example, the bottom of the heat exchanger 4 can be sealed to the chassis where the water collection tray 1 is installed. Compared with the solution where the heating tube 3 is located directly below the heat exchanger 4, the embodiment of this application places the heating tube 3 on the air outlet side of the heat exchanger 4, so that the bottom of the heat exchanger 4 cannot be exposed to air. This allows the airflow to pass through the heat exchanger 4 and fully exchange heat with it, thereby improving the heat exchange efficiency of the heat exchanger 4.

[0087] The heating tube 3 includes a first extension section 31, which extends from the first end 4a along the long side of the bottom of the heat exchanger 4 to the second end 4b. This allows the heating tube 3 to heat the dripping defrost water in a timely manner, keeping it in a liquid state and reducing the possibility of clogging the drain outlet 12 due to freezing. This ensures the smooth operation of the drainage system and improves the stability and reliability of the air conditioner 100 in heating mode. The distance L2 between the first extension section 31 and the heat exchanger 4 is less than the thickness L3 of the heat exchanger 4, and / or the first extension section 31... The distance L2 between the heating tube 3 and the heat exchanger 4 is no more than twice the diameter D of the heating tube 3, so that the heating tube 3 and the heat exchanger 4 are close together and the heat exchange coordination is more efficient. For example, when the outdoor ambient temperature is low, the air conditioner 100 is in heating mode. During the operation of the heating mode, the heat exchanger 4 will perform defrosting operation. The first extension section 31 of the heating tube 3 is close to the heat exchanger 4, thereby reducing the distance of heat radiation between the two, so that the heating tube 3 can better assist the heat exchanger 4 in performing defrosting operation and avoid defrosting water from freezing.

[0088] refer to Figure 4 , Figure 5 and Figure 6 In some embodiments, the water collection tray 1 is provided with a boss 13, which is provided to avoid the first extension section 31. The air conditioner 100 includes a fan 5 located above the water collection tray 1. The fan 5 is supported on the boss 13 and is partially located directly above the first extension section 31.

[0089] In the above technical solution, the water collection tray 1 is provided with a boss 13, which is set to avoid the first extension section 31. The fan 5 is supported on the boss 13 and is partially located directly above the first extension section 31. That is, the fan 5 can be arranged vertically with the first extension section 31, without having to be staggered in the air outlet direction of the heat exchanger 4. This reduces the spacing between the components and improves the compactness of the internal structure of the air conditioner 100.

[0090] refer to Figure 4 and Figure 5 In some embodiments, the heating tube 3 further includes a second extension 32 located on the side of the boss 13 away from the first extension 31. One end of the second extension 32 is connected to the first extension 31 near the second end 4b, and the other end of the second extension 32 extends toward the second end 4b. The fan 5 includes an axial flow impeller 51 with its axis horizontally oriented, and the second extension 32 extends directly below the axial flow impeller 51.

[0091] In the above technical solution, the fan 5 includes an axial flow impeller 51 with its axis horizontally positioned. The second extension section 32 extends from directly below the axial flow impeller 51. That is, the second extension section 32 of the heating tube 3 is located in the lower region of the axial flow impeller 51. This can quickly and accurately remove the ice at the bottom of the axial flow impeller 51 and reduce the risk of ice forming at the bottom of the impeller 51. This provides reliable protection for the axial flow impeller 51 under low-temperature heating conditions and reduces the risk of noise and damage caused by the axial flow impeller 51 colliding with ice.

[0092] refer to Figure 4 In some embodiments, the air conditioner 100 includes a fan 5 positioned above the water collection tray 1. The fan 5 includes an axial flow impeller 51 with its axis horizontally oriented, and a heating pipe 3 extending directly below the axial flow impeller 51. Thus, the heating pipe 3 extending directly below the axial flow impeller 51 melts the ice directly below the axial flow impeller 51 during winter through heat radiation from the heating pipe 3, thereby reducing the risk of noise and damage caused by ice accumulation directly below the axial flow impeller 51 colliding with ice blocks during high-speed rotation. Furthermore, in some optional examples, the axial flow impeller 51 can be configured to strike the condensate in the water collection tray 11 (e.g., by increasing the blade diameter of the axial flow impeller 51, or by providing a water-spraying ring on the outer ring of the blades of the axial flow impeller 51), projecting or splashing the condensate onto the surface of the outdoor heat exchanger 4 to assist in heat dissipation.

[0093] In some embodiments, the heating pipe 3 is a hot gas bypass pipe drawn upstream of the throttling device in the refrigerant circulation system of the air conditioner 100. Thus, the heat of the heating pipe 3 comes from the refrigerant in the pipe, rather than being melted by electric heating, which is energy-saving and environmentally friendly. Furthermore, the hot gas bypass pipe drawn upstream of the throttling device in the refrigerant circulation system of the air conditioner 100 can always release heat. For example, in winter, the heat radiation from the heating pipe 3 can melt the ice around the drain outlet 12, keeping the drain outlet 12 clear. In summer, the heating pipe 3 is placed in the water collection tank 11, and can be immersed in the condensate water to dissipate heat quickly, improving the cooling and heat exchange efficiency of the air conditioner 100.

[0094] In some embodiments, the drain valve 2 is a temperature-controlled drain valve. Thus, the drain outlet 12 can be switched according to the temperature. For example, when the outdoor ambient temperature is higher than 0°C, the drain valve 2 closes the drain outlet 12 to store water, which can be used to assist the outdoor heat exchanger 4 in dissipating heat. When the outdoor ambient temperature is lower than 0°C, the water collection tank 11 is prone to freezing. The drain valve 2 opens the drain outlet 12 to drain water, thereby preventing freezing near the drain outlet 12 and ensuring the reliability of drainage.

[0095] refer to Figure 3 and Figure 6 In some embodiments, the drain valve 2 switches the drain outlet 12 via a movable plug 22, which is a conical elastic element.

[0096] In the above technical solution, the drain valve 2 opens and closes the drain outlet 12 via a movable plug 22, allowing the plug 22 to open and close the drain outlet 12 according to storage and drainage needs. A conical elastic element is used as the plug 22 to open and close the drain outlet 12, ensuring a tight fit between the plug 22 and the drain outlet 12. When the plug 22 tightly blocks the drain outlet 12 under the action of the elastic element, the contact area between its conical surface and the inner wall of the drain outlet 12 is large. Furthermore, due to the elastic deformation of the elastic element, it can fill any unevenness or small gaps that may exist on the inner wall of the drain outlet 12, thereby achieving a reliable seal and effectively preventing water leakage from the water collection tray 1, thus allowing for better water storage in the water collection tray.

[0097] In addition, the tapered elastic element has a certain degree of elasticity and flexibility, which can adapt to temperature and pressure changes within a certain range. During the long-term operation of the air conditioner 100, the drain outlet 12 may undergo slight changes in size and shape due to factors such as wear and dust accumulation. The tapered elastic element can adapt to these changes through its own elastic deformation, maintaining good sealing and drainage performance.

[0098] refer to Figure 3 and Figure 5 In some embodiments, the drain valve 2 is a temperature-controlled drain valve; and the drain valve 2 switches the drain outlet 12 via a movable plug 22, which is a conical elastic element. Thus, the temperature-controlled drain valve can open and close the drain outlet 12 according to storage and drainage needs, and the opening and closing of the drain outlet 12 is reliable. For example, the temperature-controlled drain valve determines whether to drain based on temperature, and the conical elastic element ensures a reliable seal of the drain outlet 12, improving the performance and reliability of the air conditioner 100's drainage system.

[0099] refer to Figure 7 In some embodiments, the air conditioner 100 is a window air conditioner 100a, which includes an indoor unit 10 and an outdoor unit 20. A water collection tray 1 serves as the chassis of the outdoor unit 20. The indoor unit 10 has a water receiving trough 101, which is connected to the water collection trough 11 via a drainage path 102. The drainage path 102 is not limited and can be a water tank, pipe, etc. This solves the problem of reliable drainage of the chassis of the outdoor unit 20 and also solves the drainage problem of the indoor unit 10.

[0100] Therefore, the window air conditioner 100a can collect the condensate produced by the indoor unit 10 through the water collection tank 101, and transport the condensate to the water collection tank 11 through the drainage path 102. In summer, the drain valve 2 can close the drain outlet 12, and the water flowing into the water collection tank 11 (such as the condensate discharged from the indoor unit 10) can be stored to cool the outdoor heat exchanger 4 and improve its cooling capacity. For example, the fan wheel of the outdoor unit 20 can be used to strike the condensate in the water collection tank 11, and the condensate can be thrown or splashed onto the surface of the outdoor heat exchanger 4 to assist its heat dissipation. Alternatively, the condensate in the water collection tank 11 can be drawn in and sprayed onto the surface of the outdoor heat exchanger 4 through a spray system to assist its heat dissipation. Of course, the heating pipe 3 is located in the water collection tank 11 and is immersed in the condensate, which can assist the outdoor heat exchanger 4 in heat dissipation and improve the cooling and heat exchange efficiency of the air conditioner 100.

[0101] refer to Figure 8 In some embodiments, the air conditioner 100 is a split-type air conditioner 100b, which includes an indoor unit 30 and an outdoor unit 40, and the water collection tray 1 is the chassis of the outdoor unit 40. This solves the problem of reliable drainage from the chassis of the outdoor unit 40.

[0102] Other components of the air conditioner according to the embodiments of the present invention, such as heat exchangers and fans, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0103] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0104] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0105] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0106] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0108] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, include: A water collection tray, which has a water collection trough and a drain outlet, wherein the drain outlet is connected to the water collection trough; A drain valve is provided at the drain outlet and is used to control the opening and closing of the drain outlet; A heating element is disposed within the water collection tank, and the extension path of the heating element is configured such that the heating element can transfer heat to the drain outlet.

2. The air conditioner according to claim 1, characterized in that, The heating tube includes a first extension section and a second extension section that extend in reverse, and the drain outlet is located between the first extension section and the second extension section.

3. The air conditioner according to claim 2, characterized in that, The air conditioner includes a heat exchanger and a fan located above the water collection tray. The fan and the heating pipe are both located on the air outlet side of the heat exchanger. The first extension extends along the long bottom side of the heat exchanger, and the second extension extends from below the fan.

4. The air conditioner according to claim 2, characterized in that, The air conditioner includes a heat exchanger disposed above the water collection tray. The two ends of the bottom long side of the heat exchanger are a first end and a second end, respectively. A first extension section extends from the first end along the bottom long side of the heat exchanger to the second end. A second extension section is disposed on the side of the first extension section away from the heat exchanger. The second extension section is connected to the first extension section near the second end and is spaced apart near the first end.

5. The air conditioner according to claim 4, characterized in that, Two drainage outlets are provided between the first extension section and the second extension section, and the two drainage outlets are respectively located near the first end and the second end.

6. The air conditioner according to claim 5, characterized in that, The water collection tray is provided with a boss, which is located between the first extension section and the second extension section and between the two drain outlets. The air conditioner includes a fan supported on the boss.

7. The air conditioner according to claim 1, characterized in that, The heating tube is wound around the drain outlet.

8. The air conditioner according to claim 7, characterized in that, The heating tube is routed from one radial side of the drain outlet to the opposite radial side of the drain outlet.

9. The air conditioner according to claim 8, characterized in that, The drain outlet penetrates the bottom plate of the water collection tray. The drain valve includes two mounting feet, which are supported on the bottom plate. The line connecting the two mounting feet is the length direction of the drain valve. The direction perpendicular to the length direction and the vertical direction of the drain valve is the width direction of the drain valve. The heating tube is wound from one side of the width direction of the drain valve to the other side of the width direction of the drain valve.

10. The air conditioner according to claim 9, characterized in that, The heating tube on at least one side of the drain valve in the width direction extends along the length direction of the drain valve.

11. The air conditioner according to claim 1, characterized in that, The water collection tray is adapted to be installed on the outdoor side, the air conditioner is a heat pump air conditioner, and includes a heat exchanger installed above the water collection tray, the extension path of the heating pipe is configured such that the heating pipe can transfer heat to the heat exchanger.

12. The air conditioner according to claim 11, characterized in that, The heating tube is located on the air outlet side of the heat exchanger. The two ends of the bottom long side of the heat exchanger are the first end and the second end, respectively. The heating tube includes a first extension section. The first extension section extends from the first end along the bottom long side of the heat exchanger to the second end. The distance between the first extension section and the heat exchanger is less than the thickness of the heat exchanger and / or not greater than twice the diameter of the heating tube.

13. The air conditioner according to claim 12, characterized in that, The water collection tray is provided with a protrusion, which is disposed above the first extension section. The air conditioner includes a fan located above the water collection tray, which is supported on the protrusion and partially located directly above the first extension section.

14. The air conditioner according to claim 13, characterized in that, The heating element further includes a second extension, which is located on the side of the boss away from the first extension. The fan includes an axial flow impeller with its axis horizontally oriented, and the second extension extends directly below the axial flow impeller.

15. The air conditioner according to claim 1, characterized in that, The air conditioner includes a fan located above the water collection tray. The fan includes an axial flow impeller with its axis horizontally oriented, and the heating tube extends directly below the axial flow impeller.

16. The air conditioner according to claim 1, characterized in that, The heating element is a hot gas bypass pipe drawn from upstream of the throttling device in the refrigerant circulation system of the air conditioner.

17. The air conditioner according to claim 1, characterized in that, The drain valve is a temperature-controlled drain valve; and / or, the drain valve switches the drain outlet via a movable plug, the plug being a conical elastic element.

18. The air conditioner according to claim 1, characterized in that, The air conditioner is a window air conditioner, which includes an indoor unit and an outdoor unit. The water collection tray is the chassis of the outdoor unit. The indoor unit has a water collection trough, which is connected to the water collection trough through a drainage path. Alternatively, the air conditioner is a split-type air conditioner, which includes an indoor unit and an outdoor unit. The water collection tray is the chassis of the outdoor unit.

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