CN116163128A - Clothes dryer condensate water drainage structure and clothes dryer - Google Patents

Abstract

The invention discloses a condensed water drainage structure of a clothes dryer and the clothes dryer, wherein the condensed water drainage structure comprises: a water collection tank; a drainage channel; a drain cover; a draining pump; a drain pipe; and a drain sealing structure connected between the drain pipe and the drain pump for preventing the drain tank from communicating with the outside. By arranging the drain tank cover, the inside of the drain tank is isolated from the space above the drain tank, and the gas in the space above the drain tank is communicated with the outside gas, so that the drain tank is prevented from being communicated with the outside through the space above the drain tank; through setting up drainage seal structure, be favorable to water drainage tank and external gas's isolation, and set up water drainage tank with water catch bowl intercommunication can be so water drainage tank inside atmospheric pressure with the inside atmospheric pressure of water catch bowl is the same, makes water drainage tank with liquid level in the water catch bowl is high the same to in the drain pump drainage process, the comdenstion water in the water catch bowl can be timely flows to the water drainage tank in, is favorable to the emission of comdenstion water clean.

Description

Clothes dryer condensate water drainage structure and clothes dryer

Technical Field

The invention belongs to the technical field of clothes dryers, and particularly relates to a condensed water drainage structure of a clothes dryer and the clothes dryer with the condensed water drainage structure.

Background

The working principle of the heat pump clothes dryer or the heat pump washing and drying integrated machine in the clothes drying process is as follows: the circulated air is heated by the evaporator to generate dry hot air, which is blown into the clothes dryer containing the clothes, and the dry hot air passes through the wet clothes and takes away moisture on the clothes. The hot air after drying is changed into warm and humid air through wet clothes, and then enters a condenser to be cooled and simultaneously separates out moisture, and the hot air becomes cold air after drying. After the dried cold air is recirculated into the evaporator, the cold air is heated into dried hot air and is again fed into the clothes drying drum to dry clothes. The above-mentioned steps of drying clothes are repeated, so as to implement the drying process of clothes by clothes dryer.

The dryer air duct is internally provided with a dehumidifying structure and a condensed water draining structure, the condensed water draining structure comprises a water collecting tank and a drainage pump, an air path of the dryer air duct is arranged above the water collecting tank, the drainage pump is arranged in the drainage tank at the side part of the water collecting tank, the drainage tank is communicated with the water collecting tank through a water through hole at the bottom of the side wall, the drainage pump pumps water from the drainage tank, the water level of the drainage tank drops, and then water in the water collecting tank flows into the drainage tank through the water through hole; the water pump conveys the water in the water drainage tank to the water box which is detachable at the upper part, and when the water box is full, a user pumps out the water box to pour the water in the water box. However, in the clothes drying process, because the air passage above the water collecting tank is provided with circulating air, the air pressure above the water surface in the water collecting tank is lower than the ambient air pressure, the air above the water discharging tank is not circulated, the water discharging pipe connected with the water discharging pump is communicated with the water box, the water in the water discharging tank is at normal ambient air pressure, water in the water discharging tank flows to the water collecting tank, the water surface of the water discharging tank is lower than the water surface of the water collecting tank, when the water surface of the water discharging tank is lower than the working requirement of the water discharging pump, the water discharging pump idles, no water is discharged, so that the water discharging pump cannot normally discharge, finally, the water condensed by the clothes dryer cannot be completely discharged, and the water discharging pump also has negative effects.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The invention aims at the problems in the prior art, and provides a condensed water drainage structure of a clothes dryer, so that a drainage groove is sealed with the outside, and the drainage structure is favorable for draining condensed water.

In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme:

a condensed water drain structure of a clothes dryer, comprising:

a water collecting tank for collecting dryer condensed water;

a drainage tank which is provided in communication with the water collection tank;

a drain groove cover which is hermetically arranged with the drain groove;

a drain pump provided in the drain tank;

a drain pipe for draining condensed water in the drain tank;

and a drain sealing structure connected between the drain pipe and the drain pump for preventing the drain tank from communicating with the outside.

Further, the drainage sealing structure comprises a water outlet cavity connected with the water outlet of the drainage pump, the water outlet cavity is provided with a water outlet extending pipe and a water outlet sealing pipe, the upper part of the water outlet extending pipe is communicated with the water outlet, and the water outlet extending pipe is connected with the water outlet.

Further, the drainage sealing structure further comprises a drainage lower pipe extending into the water outlet sealing pipe, and the drainage lower pipe is connected with the drainage pipe.

Further, the drainage down tube and the drain groove cover are integrally arranged, a sealing cover is arranged at the upper end of the water outlet cavity, and the drainage down tube and the sealing cover are arranged in a sealing mode.

Further, the drainage down tube is provided with a down tube body and a down tube cover arranged on the down tube body, and the down tube cover sealing cover is arranged on the water outlet cavity; the drainage down pipe and the drainage groove cover are arranged in a sealing mode.

Further, the water outlet cavity and the drain groove cover are of an integrated structure, and the lower pipe cover sealing cover is arranged at the upper opening of the water outlet cavity.

Further, the drainage tank cover is provided with an upper sealing edge which extends upwards, the upper sealing edge is arranged on the outer side of the upper opening in a surrounding mode, the lower pipe cover is provided with an inner sealing edge which extends downwards, the inner sealing edge is located on the inner side of the upper sealing edge, and a lower pipe sealing strip is arranged between the inner sealing edge and the upper sealing edge.

Further, an outer sealing edge which is arranged in a downward extending mode is arranged on the lower pipe cover, and the outer sealing edge is located on the outer side of the upper sealing edge.

Further, an extending edge extending upwards is arranged along the edge of the upper opening, the extending edge is located below the inner sealing edge, an inner sealing protrusion extending inwards is arranged along the lower pipe sealing strip, and the sealing protrusion is located between the inner sealing edge and the extending edge.

Further, a groove sealing strip is arranged between the drain groove cover and the drain groove, and the groove sealing strip is connected with the lower pipe sealing strip.

Further, an extension opening for extending the lower pipe sealing strip is formed in the drain tank cover, and the extension opening is located between the extension edge and the upper sealing edge.

Further, the water box is also provided with a drawable water box, the upper end of the water drain pipe is connected with the water box, the water box is also connected with an overflow pipe, and an overflow sealing structure for preventing the water drain groove from being communicated with the outside is arranged between the water drain groove and the overflow pipe.

Further, the overflow sealing structure is provided with an overflow sealing pipe extending upwards along the bottom surface of the drainage tank and an overflow lower pipe extending into the overflow sealing pipe, and the overflow lower pipe is connected with the overflow pipe.

Further, the overflow down tube is arranged in a sealing manner with the drain groove cover, or the overflow down tube is arranged in an integrated manner with the drain groove cover.

Further, a partition plate is arranged between the water collecting tank and the water draining tank, a communication port is formed in the partition plate, and the height of the communication port is the same as that of the water collecting tank.

Further, the air pressure in the water collecting tank is the same as the air pressure in the water draining tank.

Further, an arc-shaped guide plate which is obliquely arranged in the direction away from the water collecting tank and in the direction close to the water discharging pump is arranged in the water discharging tank along one side, away from the water discharging pump, of the communication port.

A clothes dryer is provided with the condensed water drainage structure.

Further, the water collecting tank and the water draining tank are arranged on the base of the clothes dryer, an outer cover plate which is covered on the outer side of the space above the water draining tank is further arranged on the base, and an extension opening for extending the water draining down pipe is formed in the outer cover plate.

Further, the outer cover plate is provided with an inward groove, and the groove wall of the groove, which is close to the drainage down tube, is provided with the extension opening.

Further, an outer protecting groove which is outwards protruded and coated on the outer side of the overflow pipe is formed in the outer cover plate.

Further, the inner side of the outer cover plate is provided with reinforcing ribs which are arranged in parallel at intervals.

Compared with the prior art, the invention has the advantages and positive effects that: by arranging the drain tank cover, the inside of the drain tank is isolated from the space above the drain tank, and the gas in the space above the drain tank is communicated with the outside gas, so that the drain tank is prevented from being communicated with the outside through the space above the drain tank; the drainage sealing structure is used for preventing the drainage groove from being communicated with the outside; be favorable to water drainage tank and external gas's isolation, and set up water drainage tank with water catch bowl intercommunication can be so water drainage tank inside atmospheric pressure with the inside atmospheric pressure of water catch bowl is the same, makes water drainage tank with liquid level in the water catch bowl is high the same to in the drain pump drainage process, the comdenstion water in the water catch bowl can be timely flows to the water drainage tank in, is favorable to the drainage of comdenstion water clean.

Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view showing a construction of a first embodiment of a condensate drain structure of a clothes dryer according to the present invention;

FIG. 2 is an enlarged schematic view of the area A in FIG. 1;

FIG. 3 is a cross-sectional view of the draindown pipe axis of FIG. 1;

FIG. 4 is an enlarged schematic view of the drain tank of FIG. 3;

FIG. 5 is an enlarged schematic view of the drain seal structure of FIG. 4;

FIG. 6 is an enlarged schematic view of the area B in FIG. 5;

FIG. 7 is a cross-sectional view of the overflow downcomer axis of FIG. 1;

FIG. 8 is an enlarged schematic view of the drain tank of FIG. 7;

FIG. 9 is a schematic view of the structure of the drain cover;

FIG. 10 is a schematic view of the structure of the channel seal and the down tube seal;

fig. 11 is a schematic structural view of the outer cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, the terms "upper", "lower", "left", "right", and the like refer to the directions or positional relationships indicated by the terms "inner" and "outer" in the directions close to the axis of the inner tube, based on the positional relationships shown in the drawings. The terminology is used for the purpose of describing and simplifying the description only, and is not intended to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 11, a first embodiment of a condensate drain structure for a clothes dryer according to the present invention is provided, which collects and drains condensate precipitated during the operation of the clothes dryer. The condensate drain structure includes: a sump 10, a drain tank 20, a drain tank cover 30, a drain pump 40, a drain sealing structure 50, and a drain pipe (not shown in the drawings); the water collecting tank 10 is used for collecting condensed water of the clothes dryer, and the water collecting tank 10 is arranged on the base 100 and is positioned below the condenser; the water drainage tank 20 is communicated with the water collection tank 10, so that water in the water collection tank 10 flows into the water drainage tank 20, and internal gas in the water drainage tank 10 and internal gas in the water collection tank 20 can be communicated; the drain tank 20 is a cavity with an upper opening, and the drain tank cover 30 is sealed and arranged on the drain tank 20, so that the gas of the drain tank 20 is not communicated with the gas of the space 90 above the drain tank 20; the draining pump 40 is set inside the draining tank 20 to pump the water inside the draining tank 20 into the water box (not shown) capable of being pulled out for draining the condensed water; the drain pipe is used for draining the condensed water in the drain tank 20 into the water box. The drain sealing structure 50 is connected between the drain pipe and the drain pump 40, and the drain sealing structure 50 serves to convey the water pumped by the drain pump 40 to the drain pipe and prevent the drain tank 20 from communicating with the outside through the drain pipe.

In this embodiment, by providing the drain cover 30 such that the inside of the drain 20 is isolated from the space above the drain 20, the gas in the space above the drain 20 is communicated with the outside gas, preventing the drain 20 from being communicated with the outside through the space above it; through setting up drainage seal structure 50 for prevent water drainage tank 20 and external intercommunication, be favorable to water drainage tank 20 and external gaseous isolation, and set up water drainage tank 20 and water collecting tank 10 intercommunication, can make the inside atmospheric pressure of water drainage tank 20 and the inside atmospheric pressure of water collecting tank 10 the same for the liquid level in water drainage tank 20 and the water collecting tank 10 is high the same, and in the drainage process of drain pump 40, the comdenstion water in the water collecting tank 10 can be timely flows to water drainage tank 20 in, is favorable to the drainage of comdenstion water clean.

Referring to fig. 4, in order to ensure that the air pressure in the water drain tank 20 and the water collecting tank 10 is the same, the water collecting tank 10 and the water drain tank 20 are adjacently arranged, a partition plate is arranged between the water collecting tank 10 and the water drain tank 20, a communication port 22 is arranged on the partition plate, and the height of the communication port 22 is the same as the height of the water collecting tank 10; so that the communication port 22 can serve as a communication port for condensed water of the water collecting tank 10 and the water discharging tank 20 and also serve as a communication port for gas in the water collecting tank 10 and the water discharging tank 20; so that the air pressure in the water collecting tank 10 is the same as the air pressure in the water discharging tank 20.

An arc-shaped guide plate 23 is arranged in the drain tank 20 along one side of the communication port 22 away from the drain pump 40, and the arc-shaped guide plate 23 is obliquely arranged in a direction away from the water collecting tank 10 and towards a direction close to the drain pump 40; the condensed water in the water collecting tank 10 is favorably guided to the direction of the draining pump 40 in the draining tank 20, and the condensed water is favorably discharged.

Referring to fig. 5, in the present embodiment, the drain sealing structure 50 includes a water outlet cavity 51 connected to the water outlet 41 of the drain pump 40, the water outlet cavity 51 has a water outlet extension pipe 511 and a water outlet sealing pipe 512 which are disposed in an upper portion thereof, and the water outlet extension pipe 511 is connected to the water outlet 41. The drain seal structure 50 further includes a drain down pipe 52 extending into the drain seal water pipe 512, and the drain down pipe 52 is connected to the drain pipe. During the operation of the drain pump 40, the condensed water in the drain tank 20 is sucked into the drain pump 40, and is thrown out of the water outlet 41 under the action of the impeller; into the outlet extension pipe 511, flows into the outlet seal water pipe 512 from the upper portion of the outlet extension pipe 511, then flows into the drain water pipe 52, and reaches the inside of the water box through the drain pipe. The water outlet 41 is located at the bottom of the water outlet extension pipe 511, after the water discharge is finished, the residual water in the water discharge pipe flows back downwards under the action of gravity and flows into the water outlet sealing pipe 512, a water seal is formed in the water outlet sealing pipe 512, and the lower end of the water discharge pipe 52 is located in the water outlet sealing pipe 512, so that the air at the upper end of the water discharge pipe cannot reach the water discharge groove through the water discharge pipe and the water discharge pipe 52, that is, the water discharge groove is prevented from being communicated with the outside air through the water discharge pipe.

The drainage down pipe 52 has a down pipe body 521, a down pipe cover 522 provided on the down pipe body 521, and the down pipe cover 522 is sealed to the water outlet chamber 51. The lower pipe cover 522 is arranged on the lower pipe body 521, that is, the lower pipe cover 522 and the lower pipe body 521 are in an integrated structure, or the lower pipe cover 522 and the lower pipe body 521 are arranged in a sealing way; by arranging the lower pipe cover 522 to seal the cover on the water outlet cavity 51, the water outlet cavity 51 forms a closed cavity, so that the water pressure generated by the drainage pump 40 can pump the condensed water upwards into the water box.

The upper portion of the drain pipe 52 is located above the drain cover 30, and the lower portion of the drain pipe 52 is located within the water outlet chamber 51 within the drain tank 20, so that the drain pipe 52 is sealingly disposed with the drain cover 30, avoiding gas communication between the drain tank 20 and the space above the drain tank 20 through the drain pipe 52.

The water outlet cavity 51 and the drain groove cover 30 are integrated into a whole, and the lower pipe cover 512 is sealed and arranged at the upper opening of the water outlet cavity 51; the sealing of the lower pipe cover 512 and the drain cover 30 is realized while the lower pipe cover 512 and the water outlet cavity 51 are sealed, which is beneficial to the simplification of the structure and the improvement of the sealing effect.

In other embodiments, a special sealing cover can be arranged for the water outlet cavity 51, the water draining pipe 52 and the water draining groove cover 30 are integrally arranged, and the water draining pipe 52 and the sealing cover are arranged in a sealing way; or the drain pipe 52 has a lower pipe body 521, a lower pipe cover 522 provided on the lower pipe body 521, the lower pipe cover 522 is sealed and provided on the water outlet chamber 51, and the lower pipe body 521 and the drain cover 30 are sealed and provided. The two embodiments described above also make it possible to realize the water outlet chamber 51 as a sealed chamber and avoid the gas communication of the drain tank 20 with the space above the drain tank 20 by the drain pipe 52.

Referring to fig. 6, for sealing between the lower pipe cover 522 and the drain cover 30, an upper sealing edge 31 extending upward is provided on the drain cover 30, and the upper sealing edge 30 is enclosed on the outside of the opening of the water outlet cavity 51; an inner sealing edge 5221 extending downwards is arranged on the lower pipe cover 522, the inner sealing edge 5221 is positioned on the inner side of the upper sealing edge 31, and a lower pipe sealing strip 62 is arranged between the inner sealing edge 5221 and the upper sealing edge 31. By providing the inner sealing edge 5221 and the upper sealing edge 31 and providing the lower tube sealing strip 62 between the inner sealing edge 5121 and the upper sealing edge 31, the tightness and the firmness of the lower tube cover 522 and the drain cover 30 after assembly can be improved.

An outer sealing edge 5222 extending downward is provided on the lower tube cover 522, and the outer sealing edge 5222 is located outside the upper sealing edge 5221. By providing the outer sealing edge 5222, the sealability between the lower tube cover 512 and the upper sealing edge 31 is further improved.

In order to further improve the sealing performance, an extending edge 513 extending upwards is arranged along the edge of the upper opening of the water outlet cavity 51, the extending edge 513 is positioned below the inner sealing edge 5121, an inner sealing protrusion 621 extending inwards is arranged along the lower pipe sealing strip 62, and the sealing protrusion 621 is positioned between the inner sealing edge 5221 and the extending edge 513; the multiple sealing structure is formed between the lower pipe cover 522 and the drain cover 30, and the sealing effect is improved, so that a stable sealing effect can be formed even under the high water pressure condition in the water outlet cavity 51.

A groove sealing strip 61 is arranged between the drain groove cover 30 and the drain groove 20, and the groove sealing strip 61 is connected with a lower pipe sealing strip 62; the integrated forming of the groove sealing strip 61 and the lower pipe sealing strip 62 is facilitated, the manufacturing efficiency of parts is improved, and the number of the parts is reduced.

The groove sealing strip 61 is positioned below the drain groove cover 30, and the lower pipe sealing strip 62 is positioned above the upper opening of the water outlet cavity 51, so that the drain groove cover 30 is provided with an extension opening 32 for extending the lower pipe sealing strip 62, and the extension opening 32 is positioned between the extension edge 513 and the upper sealing edge 31; after the down tube cover 512 is secured, the extension port 32 is closed by the sealing strip 62.

The condensed water drain structure of the clothes dryer also comprises a water box (not shown in the figure) which can be pulled out, and the upper end of the drain pipe is connected with the water box. The water box is also connected with an overflow pipe (not shown in the figure) for flowing condensed water overflowed from the water box into the drain tank 20; an overflow sealing structure 70 is provided between the drain tank 20 and the overflow pipe, the overflow sealing structure 70 being for preventing the drain tank 20 from communicating with the outside.

Specifically, referring to fig. 8, the overflow sealing structure 70 has an overflow sealing pipe 71 extending upward along the bottom surface of the drain tank 20, and an overflow down pipe 72 extending into the overflow sealing pipe 71, the overflow down pipe 72 being connected to the overflow pipe. The condensed water overflowed from the water box flows into the overflow seal pipe 71 through the overflow pipe and the overflow lower pipe 72, and overflows into the water drainage tank 20 from the upper end of the overflow seal pipe 71, so that a water seal is formed in the overflow seal pipe 71, and external air cannot enter the water drainage tank 20 through the overflow pipe, thereby being beneficial to sealing and isolating the water drainage tank 20 from the outside.

Since the upper portion of the overflow drain pipe 72 is required to protrude from the drain cover 30, the overflow drain pipe 72 is provided integrally with the drain cover 30. Or a spillover water pipe 72 is provided in sealing arrangement with the drain cover 30. Avoiding gas communication within drain tank 20 with the space above drain tank 20 by overflow down pipe 72.

In this embodiment, the water collecting tank 10 and the water draining tank 20 are both positioned on the clothes dryer base 100, and the base 100 is further provided with an outer cover plate 80 covering the outer side of the upper space 90 of the water draining tank 20; by providing the outer cover plate 80, inspection and maintenance of the drain tank 20 and the drain pump 40, etc. are facilitated. The outer cover 80 is provided with an extension port 81 for extending the drain down tube 52, so that the drain down tube 52 extends out of the outer cover 80, facilitating connection of the drain down tube 52 to a drain pipe.

Specifically, referring to fig. 11, an inward groove 82 is provided in the outer cover plate 80, and an outlet 81 is provided in the groove 82 near the wall of the row of underwater pipes 52. The outer cover plate 80 is provided with an outer convex protecting groove 83, and the outer protecting groove 83 is coated on the outer side of the lower end of the overflow pipe. The inner side of the outer cover plate 80 is provided with spaced parallel reinforcing ribs for increasing the structural strength of the outer cover plate 80.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A condensed water drain structure of a clothes dryer, comprising:

a water collecting tank for collecting dryer condensed water;

a drainage tank which is provided in communication with the water collection tank;

a drain groove cover which is hermetically arranged with the drain groove;

a drain pump provided in the drain tank;

a drain pipe for draining condensed water in the drain tank;

and a drain sealing structure connected between the drain pipe and the drain pump for preventing the drain tank from communicating with the outside.

2. The condensate drain structure of claim 1, wherein the drain seal structure comprises a water outlet chamber connected to a water outlet of the drain pump, the water outlet chamber having a water outlet extension tube and a water outlet seal tube disposed in upper communication, the water outlet extension tube being connected to the water outlet.

3. The condensate drain structure of claim 2, wherein the drain seal structure further comprises a drain down tube extending into the water seal tube, the drain down tube being connected to the drain tube.

4. The condensate drain structure of claim 3, wherein the drain down tube is integrally provided with the drain cover, the upper end of the water outlet chamber is provided with a sealing cover, and the drain down tube is hermetically provided with the sealing cover.

5. The condensate drain structure of claim 3, wherein the drain down tube has a down tube body, a down tube cover disposed on the down tube body, the down tube cover sealing cover disposed on the water outlet chamber; the drainage down pipe and the drainage groove cover are arranged in a sealing way; the water outlet cavity and the drain tank cover are of an integrated structure, and the lower pipe cover sealing cover is arranged at the upper opening of the water outlet cavity.

6. The condensate drain structure of claim 5, wherein an upper sealing edge extending upward is provided on the drain cover, the upper sealing edge is disposed around the outside of the upper opening, an inner sealing edge extending downward is provided on the lower pipe cover, the inner sealing edge is located inside the upper sealing edge, and a lower pipe sealing strip is disposed between the inner sealing edge and the upper sealing edge.

7. The condensate drain structure of claim 6, wherein an outer sealing rim extending downwardly is provided on the lower tube cover, the outer sealing rim being located outboard of the upper sealing rim; an extending edge extending upwards is arranged along the edge of the upper opening, the extending edge is located below the inner sealing edge, an inner sealing protrusion extending inwards is arranged along the lower pipe sealing strip, and the sealing protrusion is located between the inner sealing edge and the extending edge.

8. The condensate drain structure according to claim 7, wherein a groove seal is provided between the drain cover and drain groove, the groove seal being provided in connection with the down tube seal; the drainage tank cover is provided with an extension opening for extending the lower pipe sealing strip, and the extension opening is positioned between the extension edge and the upper sealing edge.

9. The condensate drain structure according to any one of claims 1 to 8, further comprising a drawable water box, the upper end of the drain pipe being connected to the water box, the water box being further connected to an overflow pipe, an overflow sealing structure for preventing the drain tank from communicating with the outside being provided between the drain tank and the overflow pipe; the overflow sealing structure is provided with an overflow sealing pipe extending upwards along the bottom surface of the drainage tank and an overflow lower pipe extending into the overflow sealing pipe, and the overflow lower pipe is connected with the overflow pipe.

10. A clothes dryer, characterized in that the clothes dryer is provided with the condensed water drainage structure as claimed in any one of claims 1 to 9, the water collecting tank and the drainage tank are arranged on a base of the clothes dryer, and an outer cover plate which is covered outside a space above the drainage tank is further arranged on the base.

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