A washing and drying machine

Abstract

The present invention discloses a washer-dryer. The washer-dryer comprises a drainage device and a pipeline. The drainage device has a water inlet chamber, a pump body and a drainage port. The water inlet chamber has a plurality of water inlets, which are respectively connected to different pipelines, and the pipeline has a liquid seal structure. The beneficial effects of the present invention are that the drainage device can accommodate multiple water sources and share a pump body, thereby reducing the energy consumption of the washer-dryer; the liquid seal structure on the pipeline separates water and gas without interfering with each other, thereby preventing washing water from contaminating the dried clothes and increasing the thermal efficiency during the drying process; the U-shaped elbow has a simple structure, is easy to process, and is not easy to damage.

Description

Technical Field

[0001] The invention belongs to the field of household appliances, and in particular relates to a washer-dryer. Background Art

[0002] The integrated washer-dryer has the functions of washing and drying in the same machine body. Generally, the connecting pipe of the drum washer-dryer is a pipe for washing water and condensed water, one end of which is connected to the drying outlet (condenser) and the other end is connected to the washing drum.

[0003] The problem caused by this structure is that during washing, the washing water produced in the drum enters the pump body through the pipeline and is discharged outside the machine body, but some of the washing water or the foam produced by the washing water will enter the drying drum pipeline, contaminating the clothes being dried and affecting the operation of the drying drum. During drying, the hot air in the drying process enters the pipeline, reducing the circulation efficiency of the hot air, affecting the drying efficiency and increasing energy consumption.

[0004] The general three-way structure cannot achieve the separation of washing and drying; separately setting switch devices for the washing water pipeline and the condensing water pipeline not only increases the difficulty of the control process and is prone to failure, but also increases the cost of the washer-dryer; different water pumps are used for drainage of washing water and drying water, which increases the cost and overall energy consumption.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a washer-dryer.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A washer-dryer comprises a drainage device and a pipeline. The drainage device comprises a water inlet chamber, a pump body and a drainage port. The water inlet chamber comprises a plurality of water inlets, which are respectively connected to different pipelines.

[0009] It comprises a washing unit and a drying unit, wherein the water inlet chamber has at least a first water inlet and a second water inlet, wherein the first water inlet is connected to a water outlet of the drying unit, and the second water inlet is connected to a water outlet of the washing unit.

[0010] The water outlet of the drying unit is fixedly connected to the first water inlet via a first pipeline, and the water outlet of the washing unit is fixedly connected to the second water inlet via a second pipeline. The first pipeline and / or the second pipeline has a liquid sealing structure.

[0011] The first pipeline and / or the second pipeline has a local bending structure, and the local bending structure can accumulate liquid to form a liquid seal.

[0012] The local bending structure is a U-shaped bend tube, one end of the U-shaped bend tube extends upward, and the other end of the tube body bends downward again, and the bottom of the U-shaped bend tube can accumulate liquid to form a liquid seal;

[0013] Preferably, the U-shaped bend is integrally formed with the first pipeline and / or the second pipeline or is separately and sealably connected thereto.

[0014] The washer-dryer includes a shell, the drying unit includes a drying drum, the washing unit includes a washing drum, the drying drum and the washing drum are arranged in the shell from top to bottom, the water outlet of the drying drum is connected to the first water inlet through the first water inlet pipe, and the water outlet of the washing barrel is connected to the second water inlet through the second water inlet pipe.

[0015] The drying drum is located at the upper part of the machine body, the washing drum is located at the lower part of the machine body, the drainage device is located at the bottom of the machine body, and the first water inlet is located at the top of the water inlet chamber, so the first water inlet pipeline has a liquid sealing structure, and the liquid sealing structure is used to block the water vapor communication between the washing drum and the drying drum.

[0016] The pipe diameter of the pipeline matches the water inlet / drain outlet diameter, and the pipeline is fixed at the water inlet / drain outlet connection by a pipe clamp.

[0017] The drainage device also has a filtering device, which is inserted into the water inlet chamber to filter water from multiple water inlets. The filtering device can be removed from the body.

[0018] The water inlet chamber also has a drain outlet, which is located at the bottom of the water inlet chamber and is used to drain the residual liquid.

[0019] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0020] 1. The water inlet chamber of the drainage device has multiple water inlets, which can accommodate multiple water sources to share one pump body, reducing the energy consumption of the washer-dryer;

[0021] 2. The pipeline has a liquid seal structure, which can separate the water and gas in the washing unit and the drying unit without interfering with each other, which not only prevents the washing water from contaminating the dried clothes, but also increases the thermal efficiency of the drying process;

[0022] 3. The liquid seal structure is set as a U-shaped elbow, which has a simple structure and is easy to process. The water naturally generated during washing or drying is used as the liquid seal structure. It does not require electromagnetic control and is not easy to be damaged;

[0023] 4. The washing unit and drying unit of the washer-dryer have separate cylinders respectively, and the operation of the two does not affect the washing efficiency.

[0024] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0026] Figure 1 is a schematic diagram of the integrated washer-dryer of the present invention;

[0027] Figure 2 It is a schematic diagram of the drainage device and pipeline of the present invention;

[0028] Figure 3 It is a front schematic diagram of the drainage device of the present invention;

[0029] Figure 4 It is a schematic diagram of the back side of the drainage device of the present invention.

[0030] In the figure:

[0031] 1. Shell; 11. Drying unit; 12. Washing unit;

[0032] 2. Drainage device; 21. Water inlet chamber; 211. First water inlet; 212. Second water inlet; 213. Water outlet;

[0033] 22. Pump body; 23. Drain outlet; 24. Filter device;

[0034] 3. First pipeline; 31. U-shaped bend; 32. Avoidance structure; 33. Condensate pipe outlet; 34. Flushing water pipe outlet; 35. Boss; 351. Screw hole;

[0035] 4. Drainage pipeline;

[0036] 5. Pipe clamp.

[0037] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The present invention relates to an all-in-one washer-dryer, which comprises a drainage device 2 and a pipeline.

[0042] like Figure 3 As shown, the drainage device comprises a water inlet chamber 21 , a pump body 22 and a drainage port 23 .

[0043] The drain port 23 is fixedly connected to the drain pipe 4 and is used to discharge all the collected water from the body out of the body.

[0044] Preferably, the drain port 23 and the drain pipe 4 are fixed via a pipe clamp 5 .

[0045] One end of the drainage pipe is connected to the drainage device, and the other end extends to the outside of the shell to discharge the water in the washing and drying process out of the body. The drainage pipe is fixed to the shell 1 through a certain connection structure, preferably, fixed by a pipe clamp.

[0046] The drainage device further comprises a pump body 22, which is located at one end of the drainage device and provides power for drainage.

[0047] The water inlet chamber 21 has a plurality of water inlets, and the plurality of water inlets are respectively connected to different water inlet pipelines.

[0048] Preferably, the water inlet chamber is cylindrical and hollow inside, the water inlet and the water outlet are distributed on the arc surface of the water inlet chamber, one end of the water inlet chamber is connected to the pump body, and the other end is equipped with a filter device.

[0049] The water inlet chamber also has a drain outlet 213, which is located at the bottom of the water inlet chamber and is used to drain the liquid remaining in the water inlet chamber.

[0050] The drain outlet has a separate drain pipe, and the drain pipe has an opening and closing structure. When the drain device is in operation, the drain pipe is in a closed state. When the drain device is not in operation, the drain pipe can be opened to discharge the residual liquid in the chamber.

[0051] The water inlet chamber also has a filter device 24, which is located on one side of the drainage device and inserted into the water inlet chamber 21 to filter the incoming water from various routes.

[0052] The filter device 24 can be removed from the water inlet chamber 21 . The filter device 24 is tightly connected to one end of the water inlet chamber 21 . During use, liquid will not flow out of the filter device.

[0053] Preferably, a sealing ring is provided at the contact point between the filter device 24 and the water inlet chamber 21 .

[0054] When the drainage device 2 is installed inside the machine body, the side with the filter device is close to the outer wall of the machine body. The filter device 24 can be disassembled from outside the machine body for cleaning and replacement after the washer-dryer completes its work.

[0055] The washer-dryer also includes a drying unit 11 and a washing unit 12. The washing unit 12 of the washer-dryer has a washing outlet, and the drying unit 11 has a drying outlet. The water output from the washing outlet is washing water in the washing process, and the water output from the drying outlet is condensed water in the drying process, and may also include flushing water for flushing the lint filter.

[0056] The washing water contains foam generated by adding detergent.

[0057] The water inlet chamber 21 has at least a first water inlet and a second water inlet. The first water inlet 211 is used to receive water from the drying unit, and the second water inlet 212 is used to receive water from the washing unit.

[0058] The first water inlet 211 is connected to the drying water outlet through a first pipe, and the second water inlet 212 is connected to the washing water outlet through a second pipe.

[0059] Wherein, the first pipeline and / or the second pipeline has a liquid sealing structure.

[0060] The pipeline with a liquid sealing structure can have various shapes. Preferably, the first pipeline and / or the second pipeline has a local bending structure, and the liquid accumulates at the bottom of the local bending structure to block the pipeline and prevent gas or foam from passing through.

[0061] More preferably, the local bending structure is a U-shaped bend 31, one end of the U-shaped bend 31 extends upward, and the other end of the bend bends downward again, and liquid can be accumulated at the bottom of the U-shaped bend to form a liquid seal.

[0062] Preferably, the U-shaped bend 31 is integrally formed with the first pipeline and / or the second pipeline or is separately and sealedly connected with the first pipeline and / or the second pipeline.

[0063] In the above scheme, the U-shaped bend pipe as a partially bent structure can be formed integrally with the pipeline, and can also be assembled with the pipeline as a separate accessory.

[0064] When the U-shaped bend pipe 31 is assembled with the pipeline as a separate fitting, both ends of the U-shaped bend pipe have a sealing connection structure.

[0065] The first pipeline and / or the second pipeline may include a local bending structure which may be made of a hard material or a plastic soft material. The soft material needs to ensure the shaping of the local bending structure.

[0066] The above-mentioned liquid seal structure can also be replaced by a check valve. A check valve is set on the pipe connected to the drying outlet to allow the condensed water generated by drying to be discharged smoothly without allowing the washing water or foam generated in the washing water to flow into the condensation pipe and contaminate the clothes during the drying process.

[0067] like Figure 4 As shown, the diameter of the pipeline matches the diameter of the water inlet / drain outlet, and the pipeline is fixed at the connection of the water inlet / drain outlet by a pipe clamp 5.

[0068] The apertures of the water inlet / drain outlet are set according to their respective functions and drainage volumes.

[0069] The amount of condensed water generated by the drying unit 11 is small, and a pipe outlet with a small aperture can be set; the amount of flushing water generated by the drying unit 11 is large, and a pipe outlet with a larger aperture can be set; the amount of washing water generated by the washing unit is large, and a pipeline with a large aperture can be set.

[0070] The pipeline is provided with a boss 35, which has a mounting structure for fixing the pipeline and the housing.

[0071] Preferably, the boss has a screw hole 351, and the shell has a bolt connection structure corresponding to the screw hole to fix the pipeline inside the shell.

[0072] The boss can be integrally formed with the pipeline, or can be fixed to the pipeline via a connecting structure.

[0073] The integrated washer-dryer of the present invention further comprises a housing 1 having a supporting frame.

[0074] The washer-dryer can be a single cylinder with drying and washing functions.

[0075] The washer-dryer can also have a separate drum, specifically a first drum and a second drum stacked up and down;

[0076] In the above-mentioned cylinder separation scheme, the support frame includes a horizontally placed square base, and a vertical beam extending vertically upward is respectively provided at the four end corners of the base. The two front vertical beams extend upward beyond the top of the first cylinder, and the two rear vertical beams extend upward to between the second cylinder and the first cylinder; adjacent vertical beams are connected by at least one horizontally extending transverse reinforcement to form a frame structure.

[0077] Through the above-mentioned arrangement, the two drums can be respectively installed on the upper and lower parts of the supporting frame, and installation and fixing positions can be provided for the two drums respectively; at the same time, since the upper, middle and lower parts of the entire supporting frame are respectively fixedly connected by reinforcement members, the supporting frame of the washer-dryer is more stable and the support coefficient of the overall frame is improved.

[0078] In the above scheme, the clothing loading openings of the first drum and the second drum are both arranged toward the front side of the supporting frame, and the two vertical beams on one side of the clothing loading opening are respectively the front left vertical beam and the front right vertical beam; preferably, based on the direction from the front side to the rear side of the supporting frame, the front left vertical beam and the front right vertical beam are respectively arranged on the left and right sides of the clothing loading opening; preferably, the first drum is arranged vertically above the second drum; further preferably, the axis of the first drum and the axis of the second drum are in the same vertical plane, and the vertical plane coincides with the center of the base.

[0079] Preferably, the first drum is a drying drum with only a drying function, and the second drum is a washing drum with a washing function, so that the rear end of the first drum is installed on the support frame through a rear fixing plate vertically arranged at the rear. The rear fixing plate is installed on the rear side of the support frame, and the rear fixing plate is installed above the two vertical beams at the rear side and covers the height between the front vertical beam and the rear vertical beam accordingly, so that the first drum is installed in the upper area of ​​the support frame. The second drum at the lower side is connected to the left side horizontal reinforcement and the right side horizontal reinforcement respectively through the hanging spring arranged at the upper part thereof, and is fixedly connected to the support rod connected to the lower part thereof and the base respectively, so that the second drum is installed in the lower area of ​​the support frame.

[0080] The two vertical beams on the same side of the support frame are correspondingly provided with avoidance portions bent toward the center direction of the washing machine base to form an avoidance space for installing the curved side wall of the washer-dryer housing.

[0081] By arranging an avoidance portion composed of two parts extending inwardly and parallel to each other and connected by an inclined portion on the vertical beam of the supporting frame, an inwardly bent edge structure is formed on the supporting frame to form an avoidance space for avoiding the arc bent portion provided on the shell of the washer-dryer, so that the shell of the washer-dryer can be correspondingly fitted and fixedly installed on the outside of the supporting frame.

[0082] Embodiment 1

[0083] The washer-dryer described in this embodiment is a washing unit 11 and a drying unit 12 that share a cylinder structure, and the washing function and the drying function are performed alternately and cannot be performed at the same time.

[0084] The drying unit 11 generates condensed water and flushing water during the drying process, and the condensed water and flushing water enter the drainage device through the drying water outlet of the drying unit. The drying water outlet is connected to the drainage device through a first pipe; the part of the first pipe connected to the drying water outlet can be one pipe outlet, or two pipe outlets to discharge condensed water and flushing water respectively.

[0085] The washing unit 12 generates washing water during the washing process, and the washing water enters the drainage device through the washing water outlet of the washing unit. The washing water outlet is connected to the drainage device through a second pipeline.

[0086] In this embodiment, it is preferred that the washing water outlet is located at the lower part of the cylinder, the drying water outlet is located at the upper part of the cylinder, and the first pipeline has a liquid sealing structure.

[0087] The condensed water and washing water of the existing washer-dryer enter the pump body through the same pipeline, so that during the washing process, the foam carried by the washing water remains in the pipeline, and there is a possibility of flowing into the drying unit during the drying process to contaminate the clothes.

[0088] The liquid seal structure can accumulate a certain amount of liquid to form a liquid seal, thereby blocking the foam generated in the washing water from entering the drying unit; during the drying process, the liquid seal can intercept the hot air in the drying process, thereby preventing the loss of hot air from affecting the drying efficiency.

[0089] Embodiment 2

[0090] The difference between this embodiment and the first embodiment is that the washing unit and the drying unit of the washer-dryer described in this embodiment are separated from each other, that is, the washing unit has a washing cylinder, and the drying unit has a drying cylinder.

[0091] In a washer-dryer with a separated drum, the washing and drying processes do not interfere with each other. After washing, the clothes can be put into the drying drum, and the washing drum can be put into the clothes that need to be washed next time, which greatly saves the time of clothing processing and improves efficiency.

[0092] The washing drum has a washing water outlet located at the lower part of the washing drum, and the drying drum has a drying water outlet located at the upper part of the drying drum.

[0093] The washing drum and the drying drum are arranged up and down inside the housing 1.

[0094] The pipeline connected to the water outlet of the washing drum and / or drying drum of the integrated washer-dryer has a water seal structure to prevent washing water from flowing into the drying drum and prevent drying hot air from entering the washing tub and causing losses.

[0095] Embodiment 3

[0096] This embodiment is a further limitation of the above-mentioned embodiment 2, and the upper and lower settings of the washing drum and the drying drum are further limited to the washing drum being located at the upper part of the shell 1, the washing water outlet being located at the lower part of the washing drum, the drying drum being located at the lower part of the shell 1, and the drying water outlet being located at the upper part of the drying drum.

[0097] The washing water outlet is close to the drying water outlet, which can save the internal space of the shell, make the pipeline more concentrated, and make the structure more compact.

[0098] The washing water outlet and the drying water outlet are connected to the water inlet chamber through pipelines. The washing water outlet is connected to the second water inlet through a second pipeline, and the drying water outlet is connected to the first water inlet through a first pipeline 3.

[0099] The first pipeline and / or the second pipeline has a liquid sealing structure.

[0100] Preferably, the first pipeline has a liquid sealing structure.

[0101] Embodiment 4

[0102] This embodiment is a further limitation of the above-mentioned embodiment 2. The difference between this embodiment and the above-mentioned embodiment 3 lies in that: the drying cylinder is located at the upper part of the shell 1, and the washing cylinder has a washing water outlet located at the lower part of the washing cylinder; the washing cylinder is located at the lower part of the shell 1, and the drying cylinder has a drying water outlet located at the upper part of the drying cylinder.

[0103] In this embodiment, Figure 1 As shown, the drying outlet is located at the upper part of the shell 1, which is far away from the washing outlet. The drying unit has sufficient space to form a bent structure to achieve the purpose of liquid sealing.

[0104] During the washing process, there is a lot of washing water in the washing drum, while during the drying process, only the residual water in the clothes is left. Therefore, the weight that the washing drum has to bear during the washing process is much greater than that during the drying process. Placing the washing drum at the lower part of the housing can move the center of gravity downward during the working process, making it more stable.

[0105] The drying water outlet is connected to the first water inlet through the first pipeline 3, and the washing water outlet is connected to the second water inlet through the second pipeline.

[0106] The first pipeline 3 has a liquid seal structure. Preferably, the first pipeline has a U-shaped bend 31 to form a liquid seal. Condensed water gathers at the bottom of the U-shaped tube, so that washing water or foam of washing water cannot enter the upper part of the first pipeline, thereby preventing washing water from entering the drying drum; during the drying operation, the drying air will not enter the washing drum through the pipeline to cause heat loss, thereby further improving the efficiency of the drying process.

[0107] The first pipeline also has an avoidance structure 32. Since the pipeline is long and there are many parts inside the shell 1, it is necessary to avoid immovable parts during the installation process. Therefore, the pipeline can also be provided with a certain avoidance structure to make more effective use of the internal space of the washer-dryer.

[0108] The first pipeline has a condensation water pipe outlet 33, which is used to connect to the condensation water outlet pipe of the drying unit; the first pipeline also has a flushing water pipe outlet 34, which is used to connect to the flushing water generated by flushing and cleaning the lint filter in the drying unit.

[0109] The condensation water pipe opening 33 has a smaller diameter than the flushing water pipe opening 34 .

[0110] The drainage device is located at the bottom of the washer-dryer, and the water inlet is arranged according to the positions of the washing outlet and the drying outlet.

[0111] Preferably, the first water inlet is located at the top of the water inlet chamber, and is used to connect to a first pipeline; the second water inlet is located at the side of the water inlet chamber, and is used to connect to a second pipeline.

[0112] The drain port 23 is located at the top of the drain device and is fixedly connected to the drain pipeline.

[0113] The washer-dryer has a supporting frame, and the drainage device is installed at the bottom of the supporting frame and is located at an end corner position of the base close to the front side of the washer-dryer.

[0114] The first pipeline 3 is fixed on the vertical beam of the support frame close to the drainage device; the drainage pipeline 4 is fixed to the base inside the machine body, and after extending out of the machine body, it is fixed to the vertical beam of the support frame through structures such as clamps.

[0115] The bottom of the support frame is provided with a pipe hole, and the drainage pipe 4 extends out of the machine body through the pipe hole.

[0116] In this embodiment, the washing unit of the integrated washer-dryer is at the bottom, and the drying unit is at the top. The beneficial effect of this arrangement is that the washing process has more washing water, and the washing drum bears more weight. The washing unit is arranged at the bottom, which can move the center of the integrated washer-dryer downward, making the center of gravity more stable during the washing and drying process. The drying unit is arranged at the top, so that the first pipeline has sufficient space to set the water seal structure, so as to achieve water and gas separation in the washing and drying processes.

[0117] The beneficial effects of the above embodiments can be summarized as follows: the water inlet chamber of the drainage device has multiple water inlets, which can accommodate multiple water sources to share one pump body, thereby reducing the energy consumption of the washer-dryer; the pipeline has a liquid seal structure, which can separate the water vapor of the washing unit and the drying unit without interfering with each other, thereby preventing the washing water from contaminating the dried clothes and increasing the thermal efficiency of the drying process; the liquid seal structure is set as a U-shaped elbow, which has a simple structure and low processing difficulty. The water naturally generated during the washing or drying process is used as the liquid seal structure, and no electromagnetic control is required, which is not easy to be damaged; the washing unit and drying unit of the washer-dryer respectively have separate cylinders, and the operation of the two separately does not affect the washing efficiency.

[0118] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A washing and drying machine, comprising a drainage device and a pipeline, characterized in that: The drainage device comprises a water inlet chamber, a pump body and a drainage port, wherein the water inlet chamber has a plurality of water inlets, and the plurality of water inlets are respectively connected to different pipelines; The washer-dryer comprises a drying unit and a washing unit arranged in sequence up and down; The water inlet chamber is arranged at the bottom of the washer-dryer, and includes: The first water inlet has one end connected to the water outlet of the drying unit through the first pipeline, and the other end connected to the water inlet chamber. a second water inlet, one end of which is connected to the water outlet of the washing unit and the other end of which is connected to the water inlet chamber; The water outlet of the drying unit includes a flushing water pipe outlet respectively arranged at the upper end of the first pipeline, and a condensing water pipe outlet with a smaller diameter than the flushing water pipe outlet; A bend is provided at the lower end of the first pipeline, one end of the bend extends upward, and the other end bends downward again to communicate with the first water inlet, and liquid can be accumulated at the bottom of the bend to form a liquid seal.

2. The washer-dryer according to claim 1, characterized in that: The water outlet of the drying unit is fixedly connected to the first water inlet via a first pipeline, and the water outlet of the washing unit is fixedly connected to the second water inlet via a second pipeline. The first pipeline and / or the second pipeline has a liquid sealing structure.

3. The washer-dryer according to claim 2, characterized in that: The first pipeline and / or the second pipeline has a local bending structure, and the local bending structure can accumulate liquid to form a liquid seal.

4. The washer-dryer according to claim 3, characterized in that: The local bending structure is a U-shaped bent pipe.

5. The integrated washer-dryer according to claim 4, characterized in that: The U-shaped bend pipe is integrally formed with the first pipeline and / or the second pipeline or is separately and sealedly connected.

6. The washer-dryer according to claim 1, characterized in that: It includes a shell, the drying unit includes a drying drum, the washing unit includes a washing drum, the drying drum and the washing drum are arranged up and down in the shell, the water outlet of the drying drum is connected to the first water inlet through the first water inlet pipe, and the water outlet of the washing barrel is connected to the second water inlet through the second water inlet pipe.

7. The integrated washer-dryer according to claim 6, characterized in that: The drying drum is located at the upper part of the machine body, the washing drum is located at the lower part of the machine body, the drainage device is located at the bottom of the machine body, and the first water inlet is located at the top of the water inlet chamber, so the first water inlet pipeline has a liquid sealing structure, and the liquid sealing structure is used to block the water vapor communication between the washing drum and the drying drum.

8. The washer-dryer according to claim 1, characterized in that: The pipe diameter of the pipeline matches the water inlet / drain outlet diameter, and the pipeline is fixed at the water inlet / drain outlet connection by a pipe clamp.

9. The washer-dryer according to claim 1, characterized in that: The drainage device also has a filtering device, which is inserted into the water inlet chamber to filter water from multiple water inlets. The filtering device can be removed from the body.

10. The integrated washer-dryer according to claim 1, characterized in that: The water inlet chamber also has a drain outlet, which is located at the bottom of the water inlet chamber and is used to drain the residual liquid.

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