Clothes treating device and control method of clothes treating device

Abstract

The present invention provides a clothing treatment device, comprising: an outer tub; a drain pipe, one end of the drain pipe being connected to the bottom of the outer tub, and the other end of the drain pipe being used to connect to an external drainage pipeline; and an air pressure balance pipe, one end of the air pressure balance pipe being connected to the inner cavity of the outer tub, and the connection point between the air pressure balance pipe and the outer tub being higher than the maximum washing water level of the outer tub, and the other end of the air pressure balance pipe being connected to the drain pipe. In the present invention, the air in the inner cavity of the outer tub can be discharged through the drain pipe through the air pressure balance pipe, which not only prevents condensation from forming on the water inlet box, which affects the user experience, but also prevents high-temperature gas from being discharged from the top of the clothing treatment device, which poses a risk of burns to the user.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing devices, and more specifically, to a clothing processing device and a control method thereof. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, consumers have higher and higher requirements for the comprehensive performance of various home appliances and the requirements for the use of clothing processing devices.

[0003] In order to ensure the safe operation of the entire machine, existing clothing processing devices all have an air pressure pipe to balance the air pressure inside and outside the washing drum. One end of the air pressure pipe is connected to the washing drum cavity, and the other end is connected to the water inlet box. When the pressure in the drum is too high during operation, the gas will overflow from the water box end to balance the air pressure in the washing drum cavity.

[0004] However, when the air pressure pipe balances the air pressure in the washing drum cavity, high-temperature gas may overflow from the water inlet box, causing condensation at the exhaust outlet of the water inlet box. In addition, the high-temperature gas brings the risk of high-temperature scalding to the user, affecting the user's experience. Summary of the Invention

[0005] This application is based on the inventor's discovery and understanding of the following problems and facts: the air pressure balance pipe of the existing clothing processing device is connected to the water inlet box, and exhaust is discharged from the water inlet box, which makes condensation easy to occur at the exhaust port of the water inlet box. The discharged high-temperature gas may also scald the user, affecting the customer's experience.

[0006] The present invention aims to solve one of the above technical problems at least to a certain extent.

[0007] According to a first aspect of the present disclosure, there is provided a laundry treating apparatus comprising: an outer tub;

[0008] a drain pipe, one end of which is connected to the bottom of the outer cylinder, and the other end of which is connected to an external drain pipe;

[0009] An air pressure balance pipe, one end of which is connected to the inner cavity of the outer tub, and the connection point between the air pressure balance pipe and the outer tub is higher than the highest washing water level of the outer tub, and the other end of the air pressure balance pipe is connected to the drainage pipe.

[0010] In some embodiments, the connection point between the air pressure balance pipe and the outer cylinder is located in the top area of ​​the outer cylinder.

[0011] In some embodiments, the drain pipe includes: a liquid inlet section, a connecting section, and a discharge section;

[0012] The connecting section has a liquid inlet end, an air inlet end and a discharge end, the liquid inlet end and the air inlet end are respectively connected to the liquid inlet section and the air pressure balance pipe, and the discharge end is connected to the discharge section;

[0013] One end of the liquid inlet section away from the connecting section is communicated with the outer cylinder.

[0014] In some embodiments, the invention further comprises: a drainage control device;

[0015] The drainage control device includes: a drainage water pump and / or a drainage water valve;

[0016] The drainage control device is arranged in the liquid inlet section;

[0017] The drainage control device is used to close the liquid inlet section, or open the liquid inlet section and adjust the drainage speed of the liquid inlet section.

[0018] In some embodiments, the air pressure balance pipe is connected to the top area of ​​the connecting section.

[0019] According to an embodiment of a second aspect of the present invention, a method for controlling a laundry processing apparatus is provided, comprising: if the laundry processing apparatus is in a washing mode, controlling the drain pipe to only discharge air but not liquid;

[0020] If the clothes treating apparatus is in a drying mode, the drain pipe is controlled to intermittently drain liquid and exhaust air.

[0021] In some embodiments, controlling the drain pipe to only discharge air but not liquid includes:

[0022] Close the liquid inlet section of the drain pipe.

[0023] In some embodiments, the intermittently closing the liquid inlet section of the drain pipe comprises:

[0024] The frequency of the liquid inlet section is adjusted according to the weight of the clothes to be dried.

[0025] In some embodiments, adjusting the frequency of the liquid inlet section according to the weight of the laundry to be dried includes:

[0026] If the weight of the clothes to be dried is less than or equal to 3 kg, the opening time of the liquid inlet section is t on ∈【10s,20s】, the closing time t of the liquid inlet section off ∈【3s,10s】;

[0027] If the weight of the clothes to be dried M> 3kg, the opening time of the liquid inlet section t on ∈【10s,15s】, the closing time t of the liquid inlet section off ∈【20s,30s】。

[0028] According to an embodiment of a third aspect of the present invention, a method for controlling a clothes treating apparatus is provided. The method includes: if the clothes treating apparatus is in a drying mode, controlling a drain pipe to drain liquid and exhaust air simultaneously.

[0029] In some embodiments, the water inflow of the liquid inlet section is controlled so that the discharge section discharges liquid while the top of the discharge section has a cavity connected to the air pressure balance pipe.

[0030] According to the clothing treatment device of an embodiment of the present invention, one end of the air pressure balance pipe is connected to the inner cavity of the outer drum, and the other end is connected to the drain pipe, so that the gas in the inner cavity of the outer drum can be discharged from the drain pipe. This not only prevents condensation from forming on the water inlet box, affecting the user's experience, but also prevents high-temperature gas from being discharged from the top of the clothing treatment device, which poses a risk of burns to the user.

[0031] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a structural diagram according to an embodiment of the present invention;

[0033] Figure 2 is a structural diagram from another perspective of an embodiment of the present invention;

[0034] Figure 3 is a structural diagram according to another perspective of an embodiment of the present invention;

[0035] Figure 4 is a flow chart of a control method according to another embodiment of the present invention.

[0036] Reference numerals

[0037] 1. Outer tube; 2. Drain pipe; 21. Liquid inlet section; 22. Connecting section; 23. Discharge section; 3. Air pressure balance pipe; 4. Drain control device. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0039] Throughout the specification and claims, the following terms have at least the meanings explicitly associated herein, unless the context dictates otherwise. The meanings identified below do not necessarily limit the terms, but merely provide illustrative examples of the terms.

[0040] In the description of the present invention, the phrase "in one embodiment" does not necessarily refer to the same embodiment, although it may. Similarly, the phrase "in some embodiments," as used herein, when used multiple times, does not necessarily refer to the same embodiment, although it may. As used herein, the term "or" is an inclusive "or" operator and is equivalent to the term "and / or" unless the context clearly dictates otherwise. The term "based on" is not exclusive and allows for being based on additional factors not described unless the context clearly dictates otherwise. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The scope of the present invention is limited solely by the scope of the appended claims, and any examples set forth in this specification are not intended to be limiting but merely illustrative of some of the many possible embodiments of the claimed invention. The various embodiments provided herein should not be construed as limiting the scope of the invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0043] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] As people's living standards improve, clothing processing devices have long become one of the indispensable home appliances in daily life. Consumers have increasingly higher requirements for the comprehensive performance of various home appliances and the use of clothing processing devices. Many existing clothing processing devices have both washing and drying functions.

[0046] On the one hand, when washing or drying clothes, the clothes processing device in the prior art needs to connect the cavity in the drum with the outside world, so that when the air pressure in the drum is too high, the pressure in the drum can be released in time. However, the existing air pressure pipe is connected to the water inlet box for pressure relief, which makes the water inlet box prone to condensation, affecting the user's experience. The high-temperature gas discharged from the water inlet box can also easily scald the user, posing a threat to the user's health.

[0047] Example 1

[0048] Based on this, Figure 1-Figure 3 As shown, the laundry processing device according to an embodiment of the present invention includes: an outer tub 1;

[0049] Drain pipe 2, one end of which is connected to the bottom of outer cylinder 1, and the other end of which is connected to external drain pipe 2;

[0050] The air pressure balance pipe 3, one end of the air pressure balance pipe 3 is connected to the inner cavity of the outer tube 1, and the connection point between the air pressure balance pipe 3 and the outer tube 1 is higher than the highest washing water level of the outer tube 1, and the other end of the air pressure balance pipe 3 is connected to the drain pipe 2.

[0051] Specifically, the drain pipe 2 is a commonly used accessory of the clothing processing device. When the clothing processing device completes washing or is drying and needs to drain water to the outside, the water can be drained through the drain pipe 2. The drain pipe 2 is connected to the bottom of the outer drum 1, so that the liquid in the outer drum 1 can enter the drain pipe 2 under the action of gravity. The drain pipe 2 is connected to the external drain pipe 2 and can be connected to the sewer.

[0052] The air pressure balance pipe 3 can be a high-temperature resistant hose, which can be a rubber tube. One end of the air pressure balance pipe 3 is connected to the inner cavity of the outer tube 1, and the other end is connected to the drain pipe 2, so that the gas in the outer tube 1 can be discharged from the drain pipe 2 to the outside of the clothing processing device. Not only can the high-temperature gas directly enter the external drain pipe 2, it will not pose a threat to the safety of the user, will not scald the customer, and will not cause condensation in the water inlet box, affecting the user's experience.

[0053] The connection point between the air pressure balance pipe 3 and the outer tub 1 should be higher than the washing liquid level of the outer tub 1, specifically half the height of the outer tub 1, to avoid the air pressure balance pipe 3 affecting the washing liquid level of the outer tub 1, causing the overflow protection water level to be lowered. When the liquid in the outer tub 1 has not yet reached the washing requirements, it will directly flow out of the air pressure balance pipe 3.

[0054] The air pressure balance pipe 3 can also prevent water overflow. When the water inlet valve of the clothing processing device fails and there is too much liquid in the outer drum 1, the liquid that exceeds the washing liquid level and reaches the height of the air pressure balance pipe 3 can still flow out of the air pressure balance pipe 3 and enter the external drain pipe 2 through the drain pipe 2. This will not cause the liquid in the outer drum 1 to overflow, affect the service life of the clothing processing device, and affect the customer's usage experience.

[0055] According to the clothing treatment device of an embodiment of the present invention, one end of the air pressure balance pipe 3 is connected to the inner cavity of the outer drum 1, and the other end is connected to the drain pipe 2, so that the gas in the inner cavity of the outer drum 1 can be discharged from the drain pipe 2. This not only prevents condensation from being generated on the water inlet box, affecting the user's experience, but also prevents high-temperature gas from being discharged from the top of the clothing treatment device, which poses a risk of burns to the user.

[0056] In some embodiments, the connection point between the air pressure balance pipe 3 and the outer tube 1 is located in the top area of ​​the outer tube 1 .

[0057] Specifically, the connection point is set at the top of the outer tube 1, so that the steam accumulated on the top of the outer tube 1 can be discharged from the air pressure balance pipe 3 more quickly, and the air pressure balance pipe 3 can directly utilize the air vent pipe on the top of the original outer tube 1, and is directly connected to the air vent pipe and then connected to the drain pipe 2. There is no need to drill a hole in the outer tube 1 again, which saves costs.

[0058] In some embodiments, the drain pipe 2 includes: a liquid inlet section 21, a connecting section 22 and a discharge section 23;

[0059] The connecting section 22 has a liquid inlet end, an air inlet end, and a discharge end. The liquid inlet end and the air inlet end are respectively connected to the liquid inlet section 21 and the air pressure balance pipe 3, and the discharge end is connected to the discharge section 23.

[0060] One end of the liquid inlet section 21 away from the connecting section 22 is communicated with the outer tube 1 .

[0061] Specifically, the drain pipe 2 can be placed along the horizontal bottom surface to facilitate drainage of the clothing processing device. The connecting section 22 can be a three-way pipe. The discharge section 23 is connected to the drain port of the outer drum 1 and the air pressure balance pipe 3 through the connecting section 22. The discharge section 23 can not only discharge liquid but also discharge gas.

[0062] The connecting section 22 can be placed horizontally with the air inlet end facing upward, so that the connection process between the air pressure balance pipe 3 and the drain pipe 2 can be smoother and the gas discharge process can be smoother.

[0063] The air pressure balance pipe 3 can be connected to the side of the outer tube 1 and close to the side where the connecting section 22 is located, so that the air pressure balance pipe 3 can be better routed, the bends and line length of the air pressure balance pipe 3 can be reduced, the gas discharge can be smoother, and the production cost of the air pressure balance pipe 3 can be reduced.

[0064] In some embodiments, the invention further comprises: a drainage control device;

[0065] The drainage control device includes: a drainage water pump and / or a drainage water valve;

[0066] The drainage control device is provided in the liquid inlet section 21;

[0067] The drainage control device is used to close the liquid inlet section 21 , or open the liquid inlet section 21 and adjust the drainage speed of the liquid inlet section 21 .

[0068] Specifically, the drain pump and the drain valve are both electrically connected to the control module of the clothing processing device. The drain pump and / or the drain valve can control the closing and opening of the liquid inlet section 21. By intermittently opening and closing the liquid inlet section 21, the liquid and gas of the clothing processing device can be discharged from the discharge section 23 in turn.

[0069] The liquid inlet section 21 can also be kept open, and when the liquid inlet section 21 is opened, the drainage speed can be controlled by a drainage pump and / or a drainage valve so that the liquid level of the discharged liquid will not be higher than the air inlet end of the connecting section 22, so that the liquid and gas of the clothing treatment device can be discharged from the discharge section 23 at one time.

[0070] In some embodiments, the air pressure equalization pipe 3 is connected to the top area of ​​the connecting section 22 .

[0071] Specifically, the top area can be the highest point of the connecting section 22. When the drain pipe 2 is draining, the amount of liquid entering the liquid inlet section can be controlled so that the liquid does not completely fill the drain pipe 2. It can only occupy the lower half of the drain pipe 2, while the upper half of the drain pipe 2 can be vented normally, so that the gas and liquid can be discharged from the drain pipe 2 together.

[0072] Example 2

[0073] As attached Figure 1 -Attached Figure 4 As shown, an embodiment of the present application further provides a control method for a clothes processing device, wherein the clothes processing device is a clothes processing device according to any one of claims 1 to 4, comprising: if the clothes processing device is in a washing mode, controlling the drain pipe 2 to only discharge air but not liquid;

[0074] If the clothes processing apparatus is in the drying mode, the drain pipe 2 is controlled to intermittently drain liquid and exhaust air.

[0075] Specifically, the clothing processing device can be a washing and drying machine having both a washing mode and a drying mode. The washing and drying machine in the washing mode can wash clothes. When the clothing processing device is in the washing mode, the drainage pipe 2 can be controlled by the drainage control device to close the drainage pipe 2 and not drain water to avoid leakage of liquid during washing. At this time, the gas in the outer drum 1 can be connected to the discharge section 23 of the drainage pipe 2 through the air pressure balance pipe 3 for exhaust, and the gas is directly discharged into the external drainage pipe 2.

[0076] When the clothes processing device is in the drying mode, the clothes processing device needs to drain the liquid in the outer drum 1 in time. At this time, the drainage control device can control the drain pipe 2 to drain intermittently, so that the liquid can be discharged while the gas can be discharged during the drainage interval.

[0077] By controlling the laundry processing device in washing mode and drying mode, the laundry processing device can operate normally while the gas that needs to be discharged can be discharged into the external drain pipe 2 in a timely manner. This not only avoids condensation in the water inlet box, but also avoids high-temperature gas scalding the user and affecting the user's experience.

[0078] In some embodiments, controlling the drain pipe 2 to only discharge air but not liquid includes:

[0079] Close the liquid inlet section 21 of the drain pipe 2.

[0080] Specifically, in order to achieve the goal of only exhausting air and not draining liquid from the drain pipe 2, the liquid inlet section 21 of the drain pipe 2 can be blocked by the drainage control device, so that the liquid in the outer tube 1 remains in the outer tube 1, and the gas can enter the external drain pipe 2 through the air pressure balance pipe 3, the connecting section 22 and the discharge section 23 in sequence.

[0081] In some embodiments, controlling the intermittent draining and exhausting of the drain pipe 2 includes:

[0082] The liquid inlet section 21 of the drain pipe 2 is closed intermittently.

[0083] Specifically, in order to achieve intermittent drainage and exhaust of the drain pipe 2, the liquid inlet section 21 of the drain pipe 2 can be intermittently blocked by the drainage control device. When the liquid inlet section 21 is blocked, the outer tube 1 can exhaust through the drain pipe 2. When the liquid inlet section 21 is opened, the outer tube 1 can drain through the drain pipe 2. At this time, the liquid in the liquid inlet section 21 quickly enters the connecting section 22 and is discharged from the discharge section 23.

[0084] In some embodiments, intermittently closing the liquid inlet section 21 of the drain pipe 2 includes:

[0085] The frequency of the liquid inlet section 21 is adjusted according to the weight of the clothes to be dried.

[0086] Specifically, the time and frequency of closing the liquid inlet section 21 of the drain pipe 2 can be adjusted according to the actual weight of the clothes to be dried, so that the drain pipe 2 can not only meet the requirements of drainage and exhaust, but also protect the life of the drainage pump and / or drainage valve.

[0087] In some embodiments, adjusting the frequency of the liquid inlet section 21 according to the weight of the laundry to be dried includes:

[0088] If the weight of the clothes to be dried is less than or equal to 3 kg, the opening time of the liquid inlet section 21 is t on ∈【10s,20s】, closing time t of the liquid inlet section 21 off ∈【3s,10s】;

[0089] If the weight of the clothes to be dried M> 3kg, the opening time of the liquid inlet section 21 is t on ∈【10s,15s】, closing time t of the liquid inlet section 21 off ∈【20s,30s】。

[0090] Specifically, since the more clothes there are, the longer the drying time required, the switching frequency of the drain pump and / or the drain valve will become higher. The discharge action proposed in this application can meet the discharge requirements while better protecting the service life of the drain pump and / or the drain valve.

[0091] In some embodiments, controlling the drain pipe 2 to drain liquid and exhaust gas simultaneously includes:

[0092] The control method includes: controlling the water inflow of the liquid inlet section 21 so that the discharge section 23 discharges liquid while the top of the discharge section 23 has a cavity connected to the air pressure balance pipe 3.

[0093] Specifically, controlling the drainage pipe 2 to discharge liquid and exhaust at the same time can be achieved by controlling the drainage speed. The drainage control device controls the amount of water entering the connecting section 22 from the liquid inlet section 21, so that the liquid level does not exceed the air inlet end of the connecting section 22, avoiding blocking the air inlet end. Then the gas and liquid enter the discharge section 23 together, and enter the external drainage pipe 2 through the discharge section 23, which can avoid the continuous switching operation of the drainage pump and / or the drainage valve, thereby improving the service life of the drainage pump and / or the drainage valve.

[0094] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0095] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A clothes processing device, characterized in that: include: outer cylinder(1); A drainage pipe (2), one end of the drainage pipe (2) is connected to the bottom of the outer cylinder (1), and the other end of the drainage pipe (2) is used to communicate with an external drainage pipe (2); An air pressure balance pipe (3), one end of the air pressure balance pipe (3) is in communication with the inner cavity of the outer tub (1), and the connection point between the air pressure balance pipe (3) and the outer tub (1) is higher than the highest washing water level of the outer tub (1), and the other end of the air pressure balance pipe (3) is in communication with the drain pipe (2); Wherein, the drain pipe is configured as: If the clothes processing device is in a washing mode, the drain pipe (2) is controlled to only discharge air but not liquid; if the clothes processing device is in a drying mode, the drain pipe (2) is controlled to intermittently discharge liquid and air; The controlling of the drain pipe (2) to only discharge air but not liquid comprises: closing the liquid inlet section (21) of the drain pipe (2); the controlling of the drain pipe (2) to intermittently discharge liquid and exhaust air comprises: intermittently closing the liquid inlet section (21) of the drain pipe (2); The intermittent closing of the liquid inlet section (21) of the drain pipe (2) comprises: adjusting the frequency of the intermittent closing of the liquid inlet section (21) according to the weight of the clothes to be dried.

2. The clothes treating device according to claim 1, characterized in that: The connection point between the air pressure balance pipe (3) and the outer cylinder (1) is located in the top area of ​​the outer cylinder (1).

3. The clothes processing device according to any one of claims 1 to 2, characterized in that: The drainage pipe (2) comprises: a liquid inlet section (21), a connecting section (22) and a discharge section (23); The connecting section (22) has a liquid inlet end, an air inlet end, and a discharge end, wherein the liquid inlet end and the air inlet end are respectively connected to the liquid inlet section (21) and the air pressure balance pipe (3), and the discharge end is connected to the discharge section (23); One end of the liquid inlet section (21) facing away from the connecting section (22) is in communication with the outer cylinder (1).

4. The clothes treating device according to claim 3, characterized in that: Also includes: drainage control devices; The drainage control device includes: a drainage water pump and / or a drainage water valve; The drainage control device is arranged in the liquid inlet section (21); The drainage control device is used to close the liquid inlet section (21), or to open the liquid inlet section (21) and adjust the drainage speed of the liquid inlet section (21).

5. A clothes processing device, characterized in that: include: outer cylinder(1); A drainage pipe (2), one end of the drainage pipe (2) is connected to the bottom of the outer cylinder (1), and the other end of the drainage pipe (2) is used to communicate with an external drainage pipe (2); An air pressure balance pipe (3), one end of the air pressure balance pipe (3) is in communication with the inner cavity of the outer tub (1), and the connection point between the air pressure balance pipe (3) and the outer tub (1) is higher than the highest washing water level of the outer tub (1), and the other end of the air pressure balance pipe (3) is in communication with the drain pipe (2); The drainage pipe (2) comprises: a liquid inlet section (21), a connecting section (22) and a discharge section (23); the connecting section (22) has a liquid inlet end, an air inlet end and a discharge end, the liquid inlet end and the air inlet end are respectively connected to the liquid inlet section (21) and the air pressure balance pipe (3), and the discharge end is connected to the discharge section (23); the end of the liquid inlet section (21) facing away from the connecting section (22) is connected to the outer cylinder (1); The air pressure balance pipe (3) is connected to the top area of ​​the connecting section (22); The drain pipe is configured as follows: If the clothes processing device is in a drying mode, controlling the drain pipe (2) to drain liquid and exhaust air simultaneously; The control drain pipe (2) is configured to simultaneously discharge liquid and exhaust gas, and comprises: The water inflow of the liquid inlet section (21) is controlled so that the discharge section (23) discharges liquid, and the top of the discharge section (23) has a cavity that is in communication with the air pressure balance pipe (3).

6. A method for controlling a clothes processing device, characterized in that: The clothes processing device comprises an outer drum (1); A drainage pipe (2), one end of the drainage pipe (2) is connected to the bottom of the outer cylinder (1), and the other end of the drainage pipe (2) is used to communicate with an external drainage pipe (2); An air pressure balance pipe (3), one end of the air pressure balance pipe (3) is in communication with the inner cavity of the outer tub (1), and the connection point between the air pressure balance pipe (3) and the outer tub (1) is higher than the highest washing water level of the outer tub (1), and the other end of the air pressure balance pipe (3) is in communication with the drain pipe (2); The control method includes: If the clothes processing device is in a washing mode, the drain pipe (2) is controlled to only discharge air but not liquid; If the clothes processing device is in a drying mode, controlling the drain pipe (2) to intermittently drain liquid and exhaust air; in, The controlling the drain pipe (2) to only discharge air but not liquid comprises: closing the liquid inlet section (21) of the drain pipe (2); The control of the intermittent liquid and gas discharge of the drain pipe (2) comprises: intermittently closing the liquid inlet section (21) of the drain pipe (2); The intermittent closing of the liquid inlet section (21) of the drain pipe (2) comprises: The frequency of intermittent closing of the liquid inlet section (21) is adjusted according to the weight of the clothes to be dried.

7. The control method according to claim 6, characterized in that: The frequency of the liquid inlet section (21) is adjusted according to the weight of the clothes to be dried, comprising: If the weight of the clothes to be dried is less than or equal to 3 kg, the opening time t of the liquid inlet section (21) is on ∈【10s,20s】, the closing time t of the liquid inlet section (21) off ∈【3s,10s】; If the weight M of the clothes to be dried is greater than 3 kg, the opening time t of the liquid inlet section (21) is on ∈【10s,15s】, the closing time t of the liquid inlet section (21) off ∈【20s,30s】。 8. A method for controlling a clothes processing device, characterized in that: The laundry processing device comprises: outer cylinder(1); A drainage pipe (2), one end of the drainage pipe (2) is connected to the bottom of the outer cylinder (1), and the other end of the drainage pipe (2) is used to communicate with an external drainage pipe (2); An air pressure balance pipe (3), one end of the air pressure balance pipe (3) is in communication with the inner cavity of the outer tub (1), and the connection point between the air pressure balance pipe (3) and the outer tub (1) is higher than the highest washing water level of the outer tub (1), and the other end of the air pressure balance pipe (3) is in communication with the drain pipe (2); The drainage pipe (2) comprises: a liquid inlet section (21), a connecting section (22) and a discharge section (23); the connecting section (22) has a liquid inlet end, an air inlet end and a discharge end, the liquid inlet end and the air inlet end are respectively connected to the liquid inlet section (21) and the air pressure balance pipe (3), and the discharge end is connected to the discharge section (23); the end of the liquid inlet section (21) facing away from the connecting section (22) is connected to the outer cylinder (1); The air pressure balance pipe (3) is connected to the top area of ​​the connecting section (22); The method comprises: If the clothes processing device is in a drying mode, controlling the drain pipe (2) to drain liquid and exhaust air simultaneously; The control drain pipe (2) is configured to simultaneously discharge liquid and exhaust gas, and comprises: The water inflow of the liquid inlet section (21) is controlled so that the discharge section (23) discharges liquid, and the top of the discharge section (23) has a cavity that is in communication with the air pressure balance pipe (3).

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