Condensate water drainage structure of clothes dryer and clothes dryer

Abstract

The application discloses a clothes dryer condensate water drainage structure and a clothes dryer. The condensate water drainage structure comprises a water collecting tank, a drainage tank, a drainage tank cover, a drainage pump, a drainage pipe and a drainage sealing structure connected between the drainage pipe and the drainage pump and used for preventing the drainage tank from being communicated with the outside. The drainage tank cover is arranged to isolate the inside of the drainage tank from the space above the drainage tank, the gas in the space above the drainage tank is communicated with the outside gas, and the drainage tank is prevented from being communicated with the outside through the space above the drainage tank. The drainage sealing structure is arranged to facilitate the isolation of the drainage tank from the outside gas. The drainage tank and the water collecting tank are communicated, the internal pressure of the drainage tank is the same as the internal pressure of the water collecting tank, the liquid level in the drainage tank is the same as the liquid level in the water collecting tank, and the condensate water in the water collecting tank can flow into the drainage tank in time during the drainage of the drainage pump, so that the condensate water is discharged cleanly.

Description

Technical Field

[0001] This invention belongs to the field of dryer technology, specifically relating to a condensate drainage structure for a dryer, and a dryer having the condensate drainage structure. Background Technology

[0002] The working principle of a heat pump dryer or heat pump washer-dryer combo is as follows: Circulating air is heated by the evaporator to produce dry, hot air. This hot air is blown into the dryer containing the clothes, passing through the wet clothes and carrying away moisture. The dried hot air, now warm and humid, enters the condenser where it is cooled and moisture is released, becoming dry, cold air. This dry, cold air is then recirculated back into the evaporator, heated again, and enters the drying drum once more to dry the clothes. This drying process is repeated, thus achieving the drying of clothes.

[0003] The dryer's air duct is equipped with a dehumidification structure and a condensate drainage structure. The condensate drainage structure includes a water collection tank and a drain pump. The air duct of the dryer is located above the water collection tank. The drain pump is installed in the drain trough on the side of the water collection tank. The drain trough and the water collection tank are connected through a water inlet at the bottom of the side wall. The drain pump draws water from the drain trough, and as the water level in the drain trough drops, the water in the water collection tank flows into the drain trough through the water inlet. The water pump delivers the water in the drain trough to the removable water box at the top. When the water box is full, the user can remove the water box and empty the water. However, during the drying process, because there is airflow above the water collection tank, the air pressure above the water surface in the water collection tank is lower than the ambient air pressure. Meanwhile, the airflow above the drain tank is not circulated, and the drain pipe connected to the drain pump is connected to the water box, so the drain tank is at the normal ambient air pressure. At this time, the water in the drain tank will flow to the water collection tank, and the water level in the drain tank will be lower than the water level in the water collection tank. When the water level in the drain tank is lower than the working requirements of the drain pump, the drain pump will run dry, and no water will be discharged. This will prevent the drain pump from draining properly, ultimately resulting in the water condensed in the dryer not being completely discharged, and the drain pump will also have a negative impact.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, this invention proposes a condensate drainage structure for a clothes dryer, which seals the drainage trough from the outside environment, thus facilitating the discharge of condensate.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0007] A condensate drainage structure for a clothes dryer includes:

[0008] A water collection tank is used to collect condensate from the clothes dryer;

[0009] A drainage trough, which is connected to the water collection trough;

[0010] A drain cover, which is sealed to the drain;

[0011] A drainage pump is installed inside the drainage trough;

[0012] A drain pipe, used to drain condensate from the drain tank;

[0013] A drainage sealing structure is connected between the drain pipe and the drain pump and is used to prevent the drain trough from communicating with the outside.

[0014] Furthermore, the drainage sealing structure includes a water outlet chamber connected to the outlet of the drainage pump. The water outlet chamber has an outlet extension pipe and an outlet sealing pipe connected at the top, and the outlet extension pipe is connected to the outlet.

[0015] Furthermore, the drainage sealing structure also includes a lower drainage pipe extending into the outlet water seal pipe, and the lower drainage pipe is connected to the drainage pipe.

[0016] Furthermore, the drain pipe is integrally formed with the drain trough cover, and a sealing cover is provided at the upper end of the water outlet cavity, with the drain pipe and the sealing cover being sealed together.

[0017] Furthermore, the drain pipe has a drain pipe body and a drain pipe cover disposed on the drain pipe body, the drain pipe cover being sealed on the water outlet cavity; the drain pipe is sealed to the drain trough cover.

[0018] Furthermore, the water outlet chamber and the drainage trough cover are an integral structure, and the lower pipe cover sealing cover is located at the upper opening of the water outlet chamber.

[0019] Furthermore, the drain cover is provided with an upwardly extending upper sealing edge, which surrounds the outside of the upper opening; the lower pipe cover is provided with a downwardly extending inner sealing edge, which is located inside the upper sealing edge; and a lower pipe sealing strip is provided between the inner sealing edge and the upper sealing edge.

[0020] Furthermore, the lower tube cover is provided with a downwardly extending outer sealing edge, which is located outside the upper sealing edge.

[0021] Furthermore, an upwardly extending extension edge is provided along the edge of the upper opening, the extension edge being located below the inner sealing edge, and an inwardly extending inner sealing protrusion is provided along the lower tube sealing strip, the sealing protrusion being located between the inner sealing edge and the extension edge.

[0022] Furthermore, a groove sealing strip is provided between the drainage groove cover and the drainage groove, and the groove sealing strip is connected to the lower pipe sealing strip.

[0023] Furthermore, an extension opening for the lower pipe sealing strip to extend is provided on the drain cover, and the extension opening is located between the extension edge and the upper sealing edge.

[0024] Furthermore, it also includes a pull-out water box, the upper end of the drain pipe is connected to the water box, the water box is also connected to an overflow pipe, and an overflow sealing structure is provided between the drain trough and the overflow pipe to prevent the drain trough from communicating with the outside.

[0025] Furthermore, the overflow sealing structure has an overflow sealing pipe extending upward along the bottom surface of the drainage groove and an overflow lower pipe extending into the overflow sealing pipe, wherein the overflow lower pipe is connected to the overflow pipe.

[0026] Furthermore, the overflow pipe is sealed to the drainage trough cover, or the overflow pipe is integrally formed with the drainage trough cover.

[0027] Furthermore, a partition plate is provided between the water collection tank and the drainage tank, and a connecting opening is provided on the partition plate, the height of which is the same as the height of the water collection tank.

[0028] Furthermore, the air pressure in the water collection tank is the same as the air pressure in the drainage tank.

[0029] Furthermore, an arc-shaped guide plate is provided in the drainage trough along the side of the connection port away from the drainage pump, which is inclined towards the drainage pump in a direction away from the water collection trough.

[0030] A clothes dryer having the above-mentioned condensate drainage structure.

[0031] Furthermore, the water collection tank and the drain tank are located on the dryer base, and the base is also provided with an outer cover plate covering the outer side of the space above the drain tank, and an extension port for the drain pipe to extend out is provided on the outer cover plate.

[0032] Furthermore, the outer cover plate is provided with an inward groove, and the protrusion is provided on the groove wall near the drain pipe.

[0033] Furthermore, the outer cover plate is provided with an outwardly protruding outer protective groove that covers the outside of the overflow pipe.

[0034] Furthermore, the inner side of the outer cover plate is provided with parallel reinforcing ribs arranged at intervals.

[0035] Compared with the prior art, the advantages and positive effects of the present invention are as follows: by setting a drain cover, the interior of the drain is isolated from the space above the drain, and the gas in the space above the drain is connected to the outside gas, thus preventing the drain from communicating with the outside through its space above; by setting a drainage sealing structure, the drain is prevented from communicating with the outside; this is beneficial for isolating the drain from the outside gas, and by setting the drain and the water collection tank to be connected, the air pressure inside the drain and the water collection tank can be the same, making the liquid level in the drain and the water collection tank the same, and during the drainage process of the drain pump, the condensate in the water collection tank can flow into the drain in a timely manner, which is beneficial for the complete drainage of condensate.

[0036] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the first embodiment of a condensate drainage structure for a clothes dryer proposed in this invention;

[0039] Figure 2 for Figure 1 Enlarged structural diagram of area A in the middle;

[0040] Figure 3 for Figure 1 Cross-sectional view of the central drainage pipe axis;

[0041] Figure 4 for Figure 3 Enlarged structural diagram of the central drainage channel;

[0042] Figure 5 for Figure 4 Enlarged structural diagram of the drainage sealing structure in the middle;

[0043] Figure 6 for Figure 5 A magnified structural diagram of region B in the middle;

[0044] Figure 7 for Figure 1 Cross-sectional view of the central overflow pipe axis;

[0045] Figure 8 for Figure 7 Enlarged structural diagram of the central drainage channel;

[0046] Figure 9 This is a schematic diagram of the drainage trough cover.

[0047] Figure 10 This is a schematic diagram of the groove sealing strip and the lower pipe sealing strip.

[0048] Figure 11 This is a schematic diagram of the outer cover plate. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0050] In the description of this invention, it should be noted that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, with the direction closer to the inner cylinder axis being "inner," and the opposite being "outer." These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this invention, 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 or an electrical 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 invention according to the specific circumstances.

[0052] See Figures 1-11This is the first embodiment of a condensate drainage structure for a clothes dryer proposed in this invention. The condensate drainage structure for a clothes dryer is used to collect and discharge the condensate that is released during the operation of the clothes dryer. The condensate drainage structure includes: a water collection tank 10, a drain trough 20, a drain trough cover 30, a drain pump 40, a drain sealing structure 50, and a drain pipe (not shown in the figure). The water collection tank 10 is used to collect condensate from the dryer. The water collection tank 10 is set on the base 100 and located below the condenser. The drain trough 20 is connected to the water collection tank 10, allowing water in the water collection tank 10 to flow into the drain trough 20, and also allowing the internal gas of the drain trough 10 to communicate with the internal gas of the water collection tank 20. The drain trough 20 is an open cavity at the top. The drain trough cover 30 is sealed on the drain trough 20, preventing the gas in the drain trough 20 from communicating with the gas in the space above it 90. The drain pump 40 is located inside the drain trough 20 and is used to pump the water in the drain trough 20 to the removable water box (not shown in the figure) of the dryer. The condensate in the water box can then be emptied by removing the water box. The drain pipe is used to drain the condensate in the drain trough 20 into the water box. The drainage sealing structure 50 is connected between the drain pipe and the drain pump 40. The drainage sealing structure 50 is used to deliver the water pumped out by the drain pump 40 to the drain pipe and prevent the drain tank 20 from communicating with the outside through the drain pipe.

[0053] In this embodiment, by setting a drain cover 30, the interior of the drain 20 is isolated from the space above the drain 20, and the gas in the space above the drain 20 90 is connected to the outside gas, thus preventing the drain 20 from communicating with the outside through its space above. By setting a drain sealing structure 50, the drain 20 is prevented from communicating with the outside, which is beneficial to the isolation of the drain 20 from the outside gas. Furthermore, by setting the drain 20 and the water collection tank 10 to be connected, the air pressure inside the drain 20 and the water collection tank 10 can be the same, so that the liquid level in the drain 20 and the water collection tank 10 is the same. During the drainage process of the drain pump 40, the condensate in the water collection tank 10 can flow into the drain 20 in a timely manner, which is beneficial to the complete drainage of the condensate.

[0054] See Figure 4 As shown, in order to ensure that the air pressure in the drainage tank 20 and the water collection tank 10 is the same, the water collection tank 10 and the drainage tank 20 are arranged adjacent to each other, and there is a partition plate between the water collection tank 10 and the drainage tank 20. A connecting port 22 is opened on the partition plate, and the height of the connecting port 22 is the same as the height of the water collection tank 10. This allows the connecting port 22 to connect the condensate in the water collection tank 10 and the drainage tank 20, and also to connect the gas in the water collection tank 10 and the drainage tank 20, so that the air pressure in the water collection tank 10 and the air pressure in the drainage tank 20 are the same.

[0055] An arc-shaped guide plate 23 is provided on the side of the drain trough 20 away from the drain pump 40 along the connecting port 22. The arc-shaped guide plate 23 is inclined in the direction away from the water collection tank 10 and towards the drain pump 40. This facilitates the flow of condensate in the water collection tank 10 towards the drain pump 40 in the drain trough 20, which is beneficial for the discharge of condensate.

[0056] See Figure 5 As shown, in this embodiment, the drainage sealing structure 50 includes a water outlet chamber 51 connected to the water outlet 41 of the drainage pump 40. The water outlet chamber 51 has a water outlet extension pipe 511 and a water outlet sealing pipe 512 connected at the top, and the water outlet extension pipe 511 is connected to the water outlet 41. The drainage sealing structure 50 also includes a lower drain pipe 52 extending into the water outlet sealing pipe 512, and the lower drain pipe 52 is connected to the drain pipe. During the operation of the drainage pump 40, the condensate in the drainage tank 20 is sucked into the drainage pump 40, and under the action of the impeller, the condensate is thrown out of the water outlet 41; it enters the water outlet extension pipe 511, flows from the upper part of the water outlet extension pipe 511 into the water outlet sealing pipe 512, then flows into the lower drain pipe 52, and reaches the water box through the drain pipe. The outlet 41 is located at the bottom of the outlet extension pipe 511. After the drainage is completed, the remaining water in the drain pipe will flow back downward under the action of gravity and flow into the outlet sealing pipe 512, forming a water seal in the outlet sealing pipe 512. The lower end of the drain pipe 52 is located in the outlet sealing pipe 512, so that the air at the upper end of the drain pipe cannot reach the drain tank through the drain pipe and the drain pipe 52, that is, to prevent the drain tank from communicating with the outside air through the drain pipe.

[0057] The drain pipe 52 has a drain pipe body 521 and a drain pipe cover 522 disposed on the drain pipe body 521. The drain pipe cover 522 is sealed on the outlet chamber 51. The drain pipe cover 522 is disposed on the drain pipe body 521, that is, the drain pipe cover 522 and the drain pipe body 521 are an integral structure, or the drain pipe cover 522 and the drain pipe body 521 are sealed together. By setting the drain pipe cover 522 to seal on the outlet chamber 51, the outlet chamber 51 forms a closed cavity, so that the water pressure generated by the drain pump 40 can pump the condensate upward into the water box.

[0058] The upper part of the drain pipe 52 is located above the drain cover 30, and the lower part of the drain pipe 52 is located inside the water outlet cavity 51 in the drain trough 20. Therefore, the drain pipe 52 is sealed to the drain cover 30 to prevent gas communication between the drain trough 20 and the space above the drain trough 20 through the drain pipe 52.

[0059] Preferably, the water outlet chamber 51 and the drainage trough cover 30 are integrated into one structure, and the lower pipe cover 512 is located at the upper opening of the water outlet chamber 51. This allows the lower pipe cover 512 to seal the water outlet chamber 51 while also sealing the lower pipe cover 512 and the drainage trough cover 30, which simplifies the structure and improves the sealing effect.

[0060] In other embodiments, a dedicated sealing cover can be provided for the water outlet cavity 51, and the drain pipe 52 and the drain trough cover 30 are integrally formed, with the drain pipe 52 and the sealing cover being sealed together; or the drain pipe 52 has a lower pipe body 521 and a lower pipe cover 522 disposed on the lower pipe body 521, with the lower pipe cover 522 sealingly covering the water outlet cavity 51, and the lower pipe body 521 and the drain trough cover 30 being sealed together. Both of the above embodiments can also achieve a sealed cavity for the water outlet cavity 51, and prevent gas communication between the drain trough 20 and the space above the drain trough 20 through the drain pipe 52.

[0061] See Figure 6 As shown, for the seal between the lower pipe cover 522 and the drain trough cover 30, the drain trough cover 30 has an upwardly extending upper sealing edge 31, which surrounds the outer side of the opening in the water outlet cavity 51; the lower pipe cover 522 has a downwardly extending inner sealing edge 5221, which is located inside the upper sealing edge 31, and a lower pipe sealing strip 62 is provided between the inner sealing edge 5221 and the upper sealing edge 31. By setting the inner sealing edge 5221 and the upper sealing edge 31, and placing the lower pipe sealing strip 62 between the inner sealing edge 5221 and the upper sealing edge 31, it is beneficial to improve the sealing performance and firmness of the lower pipe cover 522 and the drain trough cover 30 after assembly.

[0062] The lower tube cover 522 is provided with a downwardly extending outer sealing edge 5222, which is located outside the upper sealing edge 5221. By providing the outer sealing edge 5222, the sealing performance between the lower tube cover 512 and the upper sealing edge 31 is further improved.

[0063] To further improve the sealing performance, an upwardly extending extension edge 513 is provided along the edge of the upper opening of the water outlet cavity 51. The extension edge 513 is located below the inner sealing edge 5121. An inwardly extending inner sealing protrusion 621 is provided along the lower pipe sealing strip 62. The sealing protrusion 621 is located between the inner sealing edge 5221 and the extension edge 513. This forms a multi-seal structure between the lower pipe cover 522 and the drain trough cover 30, improving the sealing effect and ensuring a stable sealing effect even under high water pressure conditions in the water outlet cavity 51.

[0064] A groove sealing strip 61 is provided between the drainage groove cover 30 and the drainage groove 20. The groove sealing strip 61 is connected to the lower pipe sealing strip 62. This facilitates the integral molding of the groove sealing strip 61 and the lower pipe sealing strip 62, which improves the manufacturing efficiency of the parts and reduces the number of parts.

[0065] The groove sealing strip 61 is located below the drain groove cover 30, and the lower pipe sealing strip 62 is located above the upper opening of the water outlet cavity 51. Therefore, an extension opening 32 for the lower pipe sealing strip 62 to extend is provided on the drain groove cover 30. The extension opening 32 is located between the extension edge 513 and the upper sealing edge 31. After the lower pipe cover 512 is fixed, the extension opening 32 is closed by the sealing strip 62.

[0066] The condensate drainage structure of the dryer also includes a pull-out water box (not shown in the figure), and the upper end of the drain pipe is connected to the water box. The water box is also connected to an overflow pipe (not shown in the figure) to allow the overflowing condensate in the water box to flow into the drain trough 20; an overflow sealing structure 70 is provided between the drain trough 20 and the overflow pipe to prevent the drain trough 20 from communicating with the outside.

[0067] For details, see Figure 8 As shown, the overflow sealing structure 70 has an overflow sealing pipe 71 extending upward along the bottom surface of the drain trough 20 and an overflow lower pipe 72 extending into the overflow sealing pipe 71. The overflow lower pipe 72 is connected to the overflow pipe. The condensate overflowing from the water box flows into the overflow sealing pipe 71 through the overflow pipe and the overflow lower pipe 72, and then overflows from the upper end of the overflow sealing pipe 71 into the drain trough 20, forming a water seal inside the overflow sealing pipe 71. This prevents outside air from entering the drain trough 20 through the overflow pipe, thus effectively sealing and isolating the drain trough 20 from the outside environment.

[0068] Since the upper part of the overflow pipe 72 needs to extend beyond the drain cover 30, the overflow pipe 72 and the drain cover 30 are integrated into one piece. Alternatively, the overflow pipe 72 and the drain cover 30 can be sealed together to prevent gas communication between the drain 20 and the space above the drain 20 through the overflow pipe 72.

[0069] In this embodiment, both the water collection tank 10 and the drain tank 20 are located on the dryer base 100. An outer cover plate 80 is also provided on the base 100, covering the outer side of the space 90 above the drain tank 20. The outer cover plate 80 facilitates the inspection and maintenance of the drain tank 20 and the drain pump 40. An extension port 81 for the drain pipe 52 to extend out of the outer cover plate 80 is provided on the outer cover plate 80, which facilitates the connection between the drain pipe 52 and the drain pipe.

[0070] For details, see Figure 11As shown, the outer cover plate 80 has an inwardly facing groove 82, and an opening 81 is formed on the groove wall near the drain pipe 52. The outer cover plate 80 also has an outwardly protruding protective groove 83, which covers the outer side of the lower end of the overflow pipe. The inner side of the outer cover plate 80 has parallel reinforcing ribs arranged at intervals to increase the structural strength of the outer cover plate 80.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A condensate drainage structure for a clothes dryer, characterized in that, include: A water collection tank is used to collect condensate from the clothes dryer; A drainage trough, which is connected to the water collection trough; A drain cover, which is sealed to the drain; A drainage pump is installed inside the drainage trough; A drain pipe, used to drain condensate from the drain tank; A drainage sealing structure is connected between the drain pipe and the drain pump and is used to prevent the drain tank from communicating with the outside. The drainage sealing structure includes a water outlet chamber connected to the outlet of the drainage pump. The water outlet chamber has an outlet extension pipe and an outlet sealing pipe connected at the top. The outlet extension pipe is connected to the outlet. The drainage sealing structure also includes a lower drainage pipe that extends into the outlet sealing pipe at the bottom. During the operation of the drain pump, condensate flows from the upper part of the outlet extension pipe into the outlet seal pipe, then flows into the drain lower pipe, and reaches the water box through the drain pipe; After the drainage is completed, the remaining water in the drain pipe will flow back downwards under the action of gravity and form a water seal in the outlet water seal pipe.

2. The condensate drainage structure according to claim 1, characterized in that, The drain pipe is connected to the drain pipe.

3. The condensate drainage structure according to claim 1, characterized in that, The drain pipe is integrally formed with the drain trough cover, and a sealing cover is provided at the upper end of the water outlet cavity. The drain pipe and the sealing cover are sealed together.

4. The condensate drainage structure according to claim 1, characterized in that, The drain pipe has a drain pipe body and a drain pipe cover disposed on the drain pipe body. The drain pipe cover is sealed on the water outlet cavity. The drain pipe is sealed to the drain trough cover. The water outlet cavity and the drain trough cover are integral structures. The drain pipe cover is sealed at the upper opening of the water outlet cavity.

5. The condensate drainage structure according to claim 4, characterized in that, The drain cover has an upwardly extending upper sealing edge that surrounds the outside of the upper opening. The lower pipe cover has a downwardly extending inner sealing edge that is located inside the upper sealing edge. A lower pipe sealing strip is provided between the inner sealing edge and the upper sealing edge.

6. The condensate drainage structure according to claim 5, characterized in that, The lower tube cover has a downwardly extending outer sealing edge, which is located outside the upper sealing edge; an upwardly extending extension edge is provided along the edge of the upper opening, which is located below the inner sealing edge; and an inwardly extending inner sealing protrusion is provided along the lower tube sealing strip, which is located between the inner sealing edge and the extension edge.

7. The condensate drainage structure according to claim 6, characterized in that, A groove sealing strip is provided between the drainage groove cover and the drainage groove, and the groove sealing strip is connected to the lower pipe sealing strip; an extension opening for the lower pipe sealing strip to extend is provided on the drainage groove cover, and the extension opening is located between the extension edge and the upper sealing edge.

8. The condensate drainage structure according to any one of claims 1 to 7, characterized in that, It also includes a pull-out water box, the upper end of the drain pipe is connected to the water box, the water box is also connected to an overflow pipe, and an overflow sealing structure is provided between the drain trough and the overflow pipe to prevent the drain trough from communicating with the outside; the overflow sealing structure has an overflow sealing pipe extending upward along the bottom surface of the drain trough and an overflow lower pipe extending into the overflow sealing pipe, and the overflow lower pipe is connected to the overflow pipe.

9. A clothes dryer, characterized in that, The condensate drainage structure according to any one of claims 1 to 8 is provided, wherein the water collection tank and the drain tank are located on the base of the dryer, and an outer cover plate covering the outer side of the space above the drain tank is also provided on the base.

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