Exhaust device of washing and drying machine and washing and drying machine

Abstract

The present invention relates to an exhaust device for a washing and drying machine, which is installed on the inner wall or outer wall of a shell of the washing and drying machine; it comprises an air inlet, an exhaust passage and an exhaust port; the air inlet, the exhaust passage and the exhaust port form an exhaust passage; a blocking structure for blocking liquid is arranged in the exhaust passage; the air inlet guides the gas discharged from the washing and drying machine and having a humidity difference with the outside into the exhaust passage, the liquid in the gas flows back after passing through the blocking structure, and the gas is discharged to the outside of the washing and drying machine from the exhaust port. The present invention does not increase the volume of the washing and drying machine, guides the gas discharged from the washing and drying machine and having a humidity difference with the outside into the exhaust passage, makes the liquid in the gas flow back after passing through the blocking structure, and prevents a small amount of liquid in the gas from flowing to the ground after being ejected with the gas; and the inclined surface design of the first baffle in the blocking structure, and the combined design of the first baffle and the second baffle can achieve a higher liquid blocking effect and reflux effect.

Description

Technical Field

[0001] The invention relates to the technical field of clothing care, and in particular to an exhaust device of a washer-dryer and the washer-dryer. Background Art

[0002] At present, the existing clothes drying devices, such as dryers and washing and drying machines, use condensation cycle drying. The principle is generally that the air is heated by a heater and enters the drying drum. Under the action of hot air, the water on the clothes evaporates and forms humid hot air with the air. Then the humid hot air enters the condenser. After the humid hot air is condensed into condensed water and dry gas in the condenser by the action of the cooling medium. The dry gas is then heated by the heater and enters the drum. After this cycle, the purpose of drying clothes is achieved. The second is direct condensation, which introduces fresh air from the outside and directly discharges it from the dryer after drying. The direct drying method consumes a lot of energy; the gas after drying is mostly high-temperature and high-humidity gas. Discharging the high-temperature and high-humidity gas after drying directly from the inner drum to the room will cause the humidity and temperature of the indoor air to be too high. The indoor air with excessive temperature and humidity enters the inner drum through the fresh air duct, resulting in the air quality cannot be guaranteed for a long time, which is easy to cause damage and pollution to the clothes drying.

[0003] In other prior arts, the condensed high-temperature and humid air is cooled and dehumidified by a heat exchange device and then discharged outside the clothes drying device. However, even if the condensed gas is cooled and dehumidified by a heat exchange device and then discharged, the liquid in the gas cannot be completely removed.

[0004] Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide an exhaust device for a washer-dryer and a washer-dryer.

[0006] The technical solution of the present invention is summarized as follows:

[0007] The present invention provides an exhaust device for a washer-dryer, which is installed on a housing of the washer-dryer; it comprises an air inlet, an exhaust passage and an exhaust port; the air inlet, the exhaust passage and the exhaust port form an exhaust passage; wherein a blocking structure for blocking liquid is provided along the path of the exhaust passage;

[0008] The air inlet guides the gas discharged from the washer-dryer and having a humidity difference with the outside into the exhaust passage, and the liquid in the gas flows back after passing through the blocking structure, and the gas is discharged from the exhaust port to the outside of the washer-dryer.

[0009] Furthermore, the blocking structure includes a first baffle plate, and a plurality of air holes are provided on the first baffle plate, and the air holes form the exhaust port.

[0010] Furthermore, the first baffle includes a first inclined surface and / or a second inclined surface, and the liquid in the gas having a humidity difference with the outside flows back along the first inclined surface and / or the second inclined surface.

[0011] Furthermore, the blocking structure also includes at least one second baffle plate arranged along the extension direction of the exhaust passage, a blocking portion is provided in the middle of the second baffle plate, and a plurality of air holes are provided at both ends of the blocking portion.

[0012] Furthermore, the blocking structure further comprises a sealing member disposed at the exhaust port, and the sealing member is configured to open and close the exhaust port.

[0013] Furthermore, the flow path in the exhaust passage is non-linear, which increases the blocking effect on liquid in the exhaust gas.

[0014] Furthermore, when the exhaust device is installed on the surface of the washer-dryer housing, the exhaust port faces a direction away from the ground, and the liquid in the gas with a humidity difference with the outside world flows back under the action of gravity.

[0015] Furthermore, a cross-sectional area of ​​the exhaust port is greater than a cross-sectional area of ​​the air inlet.

[0016] Furthermore, in a direction from the air inlet to the air outlet, a cross-sectional area of ​​the exhaust passage gradually increases.

[0017] Furthermore, the exhaust passage comprises a side wall, and the width of the side wall gradually decreases from top to bottom.

[0018] Furthermore, it also includes a mounting portion, and the mounting portion is located on both sides of the air inlet.

[0019] Furthermore, the blocking structure also includes a filter element, which is installed at the air inlet to filter the gas entering the exhaust channel and block the liquid.

[0020] Correspondingly, the present invention also provides a washer-dryer, comprising the exhaust device for the washer-dryer as described in any one of the above items.

[0021] Furthermore, the exhaust device is installed after the dehumidification system, and the air inlet of the exhaust device is installed at the air outlet of the dehumidification system;

[0022] The dehumidification system cools and dehumidifies the hot and humid air in the outer drum of the washer-dryer to form gas with a humidity difference from the outside, and discharges the gas to the exhaust device.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: an exhaust device for a washing and drying machine provided by the present invention is installed on the inner wall or outer wall of a shell, does not increase the volume of the washing and drying machine, and guides the gas discharged from the washing and drying machine and having a humidity difference with the outside into the exhaust channel, so that the liquid in the gas flows back after passing through the blocking structure, and is discharged together with the condensed water generated by drying clothes inside the washing and drying machine, thereby preventing a small amount of liquid in the gas from flowing to the ground after being sprayed out with the gas; and the inclined design of the first baffle in the blocking structure, and the combined design of the first baffle and the second baffle, can achieve a higher liquid blocking effect and reflux effect.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 is an internal schematic diagram of an embodiment of a washer-dryer in the present invention;

[0027] Figure 2 is an internal schematic diagram of another embodiment of the washer-dryer of the present invention;

[0028] Figure 3 is a schematic diagram of an exhaust device of a washer-dryer in the present invention;

[0029] Figure 4 This is a disassembled diagram of an exhaust device of a washer-dryer in the present invention;

[0030] Figure 5 It is a schematic diagram of a blocking structure in an exhaust device of a washer-dryer in the present invention;

[0031] Figure 6 is a cross-sectional view of an exhaust device of a washer-dryer in the present invention;

[0032] Figure 7 It is a schematic diagram of the heat exchange device in the washer-dryer of the present invention.

[0033] Description of reference numerals:

[0034] 100. washing and drying machine; 1. fresh air duct; 2. exhaust air duct; 81. inner tube; 82. outer tube; 4. condenser; 5. circulation duct; 51. heating component; 52. fan volute; 6. connecting duct; 71. drain pump; 7. drain pipe; 10. heat exchange device; 11. upper shell; 111. cooling medium inlet; 1211. upper fin; 1221. lower fin; 123. heat conduction plate; 13. lower shell; 131. air outlet; 132. air inlet; 133. cooling medium outlet; 20. air inlet module; 30. exhaust device; 31. air inlet; 311. filter element; 32. exhaust port; 33. exhaust channel; 34. first baffle; 341. first inclined surface; 342. second inclined surface; 35. second baffle; 351. blocking part. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings, and the aforementioned and other purposes, features, aspects and advantages of the present invention will become more obvious, so that those skilled in the art can implement it with reference to the text of the specification. In the accompanying drawings, for the sake of clarity, the shapes and sizes can be enlarged, and the same reference numerals will be used in all figures to indicate the same or similar parts. In the following description, words such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or position relationship shown in the accompanying drawings. In particular, "height" is equivalent to the size from top to bottom, "width" is equivalent to the size from left to right, and "depth" is equivalent to the size from front to back. These relative terms are for the convenience of explanation and are generally not intended to require specific orientation. Terms related to attachment, connection, etc. (for example, "connection" and "attachment") refer to the relationship between these structures directly or indirectly fixed or attached to each other through intermediate structures, and movable or rigid attachment or relationship, unless otherwise explicitly stated.

[0036] Next, the present invention is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be understood that the terms such as "having", "including" and "comprising" used herein do not specify the existence or addition of one or more other elements or their combinations.

[0037] See also Figure 1-Figure 7 The present invention provides an exhaust device 30 for a washing and drying machine, which is installed on the inner wall or outer wall of the housing of the washing and drying machine. Figure 1 The exhaust device 30 is installed on the outer wall of the shell, see the attached manual Figure 2The exhaust device 30 is installed on the inner wall of the housing, and blocks the liquid in the gas from flowing back before the gas is discharged to the outside of the washer-dryer. The exhaust device 30 includes an air inlet 31, an exhaust channel 33 and an exhaust port 32; the air inlet 31, the exhaust channel 33 and the exhaust port 32 form an exhaust passage; wherein a blocking structure for blocking the liquid is provided along the path of the exhaust passage; the air inlet 31 guides the gas discharged from the washer-dryer with a humidity difference with the outside into the exhaust channel 33, and the liquid in the gas flows back after passing through the blocking structure, and the gas is discharged from the exhaust port 32 to the outside of the washer-dryer.

[0038] The exhaust device 30 is installed after the dehumidification system, and the air inlet 31 of the exhaust device 30 is installed at the air outlet of the dehumidification system; the dehumidification system cools and dehumidifies the hot and humid air in the outer drum 82 of the washer-dryer to form gas with a humidity difference with the outside, and discharges it to the exhaust device 30.

[0039] In the prior art, the washing and drying mode of a washing and drying machine can be a condensing type and / or a direct exhaust type. In the condensing type, the condenser is connected to the outer drum and is used to condense the hot and humid air entering the condenser from the outer drum. The condensed air is circulated to the inner drum, and the condensed water is discharged through the drain pipe. The subsequent direct exhaust washing and drying mode shortens the drying time of the condensing type, and discharges the hot and humid air in the washing and drying machine through the exhaust duct. The direct exhaust type can be used in combination with the condensing type to shorten the drying time, and can also introduce fresh air outside the washing and drying machine, and at the same time discharge the hot and humid air from the washing and drying machine. The exhaust device 30 provided by the present invention is installed on the exhaust duct of the hot and humid air, which is used to reduce or avoid the liquid in the hot and humid air from being sprayed out.

[0040] In addition, a heat exchange device can also be provided in the direct-discharge washing and drying mode. The hot and humid air in the inner and outer drums first enters the heat exchange device for cooling and dehumidification after passing through the exhaust duct, and then enters the exhaust device 30 provided by the present invention to reflux the liquid, and the gas is ejected from the exhaust device 30. Therefore, the exhaust device 30 provided by the present invention can also be installed after the heat exchange device. It can be seen that in the present invention, the exhaust device is installed after the dehumidification system, and the air inlet of the exhaust device is installed at the air outlet of the dehumidification system. The dehumidification system includes an exhaust duct and / or a heat exchange device for discharging the hot and humid air. The air outlet can be the outlet of the exhaust duct or the outlet of the heat exchange device.

[0041] Specifically, refer to Figures 4 to 6The blocking structure includes a first baffle 34, and a plurality of air holes are provided on the first baffle 34, and the air holes form an exhaust port 32. A downward recessed portion is provided in the middle of the first baffle 34, and a small amount of liquid carried in the ejected gas will be blocked by the first baffle 34 after passing through the first baffle 34, and will flow back downward along the recessed portion. Specifically, the first baffle 34 includes a first inclined surface 341 and / or a second inclined surface 342, and the middle portion of the first baffle 34 is lower than the first inclined surface 341 and the second inclined surface 342, forming a downward recessed portion, and the liquid in the exhaust gas will flow back along the first inclined surface 341 and / or the second inclined surface 342.

[0042] In this embodiment, the blocking structure further includes at least one second baffle 35 arranged along the extension direction of the exhaust passage, and a plurality of air holes are arranged on the second baffle 35. The second baffle 35 is located below the first baffle 34, and the exhaust gas first passes through the second baffle 35 and then passes through the first baffle 34. Specifically, a blocking portion 351 is arranged in the middle of the second baffle 35, and a plurality of air holes are arranged at both ends of the blocking portion 351; the liquid in the gas having a humidity difference with the outside is blocked by the blocking portion 351 in the middle of the second baffle 35 and then flows back. After the gas with a humidity difference with the outside world is ejected, it first passes through the second baffle 35. The liquid in the gas is blocked by the blocking part 351 located in the middle position and then flows back. The gas is discharged from the air holes, effectively preventing the exhaust gas from blowing out the liquid. The gas is then discharged through a number of air holes (i.e., the exhaust port 32) on the first baffle 34. The design of the upper and lower baffles increases the movement resistance of the gas with a humidity difference with the outside world to a certain extent, which can prevent the gas from blowing out water. The exhausted gas is condensed twice in the entire exhaust device 30, and the condensed liquid flows back to the drainage pipe of the dehumidification system and is discharged along the drainage pipe of the dehumidification system.

[0043] In addition, the blocking structure also includes a sealing member arranged at the exhaust port, and the sealing member is configured to open and close the exhaust port. The sealing member can be arranged in a plate-like or sheet-like structure, and the sealing member is pivotally connected to the exhaust port, and the exhaust port is opened or closed as required, and the convection channel is sealed in a non-exhaust state.

[0044] Preferably, the flow path of the gas with a humidity difference from the outside in the exhaust passage is non-linear, which can be understood as the exhaust passage 33 is non-linear or the air inlet and the exhaust port are not on the same plane, so that the exhaust passage is non-linear, increasing the blocking effect on the liquid in the exhaust gas, increasing the contact area between the gas and the exhaust passage, and increasing the condensation effect of the gas in the exhaust passage. It can be understood that the non-linear shape of the exhaust passage 33 is part of the blocking structure.

[0045] Preferably, in order to achieve a better reflux effect, when the exhaust device is installed on the surface of the washer-dryer housing, the exhaust port faces away from the ground, and the liquid in the gas with a humidity difference with the outside world refluxes under the action of gravity.

[0046] The cross-sectional area of ​​the exhaust port is greater than the cross-sectional area of ​​the air inlet. Specifically, the cross-sectional area of ​​the exhaust channel 33 gradually increases in the direction from the air inlet to the exhaust port. It can be understood that the width of the exhaust channel 33 gradually increases in the direction from the air inlet to the exhaust port. The increase in the cross-sectional area relatively increases the contact area with the liquid, increases the resistance to the liquid, and increases the contact area for forming the condensation effect. Specifically, the exhaust channel 33 includes a side wall, and the width of the side wall gradually decreases from top to bottom, reducing the resistance to the reflux of the liquid and preventing the liquid from overflowing. The air inlet and the exhaust port have a height difference, and the exhaust port is higher than the air inlet, which enhances the obstruction effect on the liquid in the exhaust gas, prevents the liquid from flowing directly to the ground, and better realizes the reflux of the liquid.

[0047] In addition, in order to facilitate the installation of the exhaust device 30, it also includes a mounting part, which is located on both sides of the air inlet and is used to be installed at the air outlet of the dehumidification system. Specifically, the mounting part is screwed on the exhaust channel or the air outlet of the dehumidification system of the washer-dryer.

[0048] Preferably, the blocking structure further includes a filter 311, which is installed at the air inlet 31 to filter the gas entering the exhaust channel and block the liquid. The filter 311 can filter out fine impurities carried in the gas to prevent the exhaust gas from being too impure and affecting the indoor air quality, and can block the liquid carried in the ejected gas.

[0049] In this embodiment, the first baffle 34 and the second baffle 35 are integrally formed and can be detachably installed in the exhaust passage 33 . After the exhaust passage 33 and the air inlet 31 are integrally formed, the filter element 311 is installed in the air inlet 31 .

[0050] In other embodiments, the second baffle 35 may not be included, and the gas with a humidity difference with the outside is only blocked and condensed once by the first baffle 34. The first baffle 34 may be detachably mounted on the exhaust channel 33, or may be integrally formed with the exhaust channel 33.

[0051] Accordingly, the present invention also provides a washer-dryer 100, comprising the exhaust device 30 of the washer-dryer as described above. The washer-dryer further comprises: a housing, an inner drum 81, an outer drum 82, a fresh air duct 1 for introducing external fresh air into the device, a connecting duct 6, and an exhaust duct 2 for exhausting the hot and humid air in the device. The housing constitutes the basic external structure of the device.

[0052] The inner drum 81 and the outer drum 82 are arranged in the box, the inner drum 81 is used to contain clothes, the inner drum 81 is arranged in the outer drum 82 and communicates with the outer drum 82 through the holes on the inner drum 81, and the hot and humid air in the inner drum 81 can enter the outer drum 82. The outer drum 82 is provided with an exhaust inlet.

[0053] Fresh air duct 1, one end of which is a fresh air inlet provided on the front plate or the upper top plate of the box, that is, one end of the fresh air duct 1 is connected to the external fresh air, and the air outside the box enters the fresh air duct from the fresh air inlet and is connected to the condenser 4 via the inner cylinder 81. In short, the fresh air duct 1 sends the external fresh air into the inner cylinder 81 via the connecting air duct 6 and finally into the condenser 4. Preferably, an air filter device is provided on the fresh air duct 1 to purify the air entering the fresh air duct 1 from inside the box and / or outside.

[0054] It can also include an air inlet module 20, the other end of which is connected to the inner cylinder 81. The fresh air sterilized by the air inlet module 20 enters the inner cylinder 81 through the connecting air duct 6, enters the outer cylinder 82 through the inner cylinder 81, and then enters the heat exchange device 10 and the condenser 4.

[0055] Exhaust duct 2, one end of the exhaust duct 2 is an exhaust inlet arranged in the outer cylinder, and the other end is connected to the heat exchange device 10; the hot and humid air in the inner cylinder 81 first enters the outer cylinder 82 through the holes on the inner cylinder 81, and then enters the exhaust duct 2 from the exhaust inlet and is discharged.

[0056] The washer-dryer may further include a condenser 4, which is connected to the outer cylinder and used to condense the hot and humid water vapor entering the condenser 4 from the outer cylinder 82. The hot and humid water vapor in the inner cylinder 81 enters between the inner and outer cylinders through the holes on the inner cylinder 81, and enters the condenser 4 through the holes on the outer cylinder. The condenser 4 condenses the hot and humid gas entering the condenser from the outer cylinder. The other end of the condenser is connected to the inner cylinder 81, so that the condensed air is heated by the heating component 51 in the circulating air duct 5 under the action of the fan volute 52 and then supplied to the inner cylinder 81. The condensed water flows into the drain pump 71 along with the condensed water. The water is discharged through the drain pipe 7 under the action of the drain pump 71.

[0057] The circulating air duct 5 has one end connected to the condenser 4 and the other end connected to the inner cylinder 81 ; after the air passing through the condenser 4 is condensed, it is supplied to the inner cylinder 81 through the circulating air duct 5 .

[0058] Preferably, a heating component 51 and a fan volute 52 are provided on the circulating air duct 5. The hot and humid air in the inner cylinder 81 enters the outer cylinder 82 through the inner cylinder 81, and then enters the condenser 4 through the holes on the outer cylinder 82. The gas condensed by the condenser 4 enters the circulating air duct 5 under the action of the fan volute 52, and is heated by the heating component 51 and circulated to the inner cylinder 81 to dry the clothes.

[0059] The washer-dryer may further include a heat exchange device 10 for cooling and dehumidifying the hot and humid gas, and the high-temperature and high-humidity air enters the heat exchange device 10 through the exhaust duct 2. When the heat exchange device 10 is not present, the exhaust device 30 provided above may be installed on the exhaust duct 2. When the heat exchange device 10 is present, the exhaust device 30 provided above is installed after the heat exchange device 10, specifically on the inner shell or outer shell of the washer-dryer. Before the gas is sprayed to the outside of the washer-dryer, the ventilator 30 blocks the gas with relative humidity with liquid.

[0060] The exhaust device 30 is installed after the dehumidification system, and the air inlet of the exhaust device is installed at the air outlet of the dehumidification system; the dehumidification system cools and dehumidifies the hot and humid air in the outer drum of the washer-dryer to form gas with a humidity difference with the outside, and discharges it to the exhaust device 30.

[0061] The inner cylinder 81 is connected to the outer cylinder 82, and the outer cylinder 82 is provided with an exhaust inlet to discharge the hot and humid air in the inner cylinder 81 out of the device after being processed by the heat exchange device 10. One end of the exhaust duct 2 is connected to the exhaust inlet provided in the outer cylinder 82, and the other end is connected to the heat exchange device 10.

[0062] Specifically, the heat exchange device 10 includes an upper shell 11, a lower shell 13, a water channel structure, a heat conducting plate 123 and an air channel structure. Preferably, the water channel structure, the heat conducting plate 123 and the air channel structure are all made of heat conducting materials.

[0063] The heat conducting plate 123 is located between the water channel structure and the air channel structure. A drain port is provided on the heat conducting plate 123. Preferably, the edge of the heat conducting plate 123 is bent toward the water channel structure to form a baffle, that is, the baffle and the heat conducting plate 123 form an open groove, and the water channel structure is located in the groove.

[0064] The water channel structure includes a plurality of upper fins 1211, and water channels are formed between adjacent upper fins 1211. The bottom of the upper fin 1211 is integrally formed on the heat conducting plate 123. The air channel structure includes a plurality of lower fins 1221, at least two of which are arc-shaped lower fins, and an arc-shaped air channel is formed between adjacent arc-shaped lower fins.

[0065] The upper shell 11 is provided with a cooling medium inlet 111, and the lower shell 13 is provided with an air inlet 132, an air outlet 131 and a cooling medium outlet 133. The air inlet 132 is higher than the air outlet 131, and the air inlet 132 is larger than the air outlet 131 to avoid causing turbulence of the air flow. The cooling medium outlet 133 is lower than the cooling medium inlet 111, the air inlet 132 and the air outlet 131 to discharge condensed water.

[0066] The air inlet 31 of the ventilation device 30 is installed on the air outlet 131 of the heat exchange device 10, and guides the gas discharged from the washing and drying machine with a humidity difference with the outside into the exhaust channel, so that the liquid in the gas flows back after passing through the blocking structure and flows back into the heat exchange device 10.

[0067] An exhaust device for a washing and drying machine provided by the present invention is installed on the inner wall or the outer wall of a shell, does not increase the volume of the washing and drying machine, and guides the gas discharged from the washing and drying machine and having a humidity difference with the outside into an exhaust passage, so that the liquid in the gas flows back after passing through the blocking structure, and is discharged together with the condensed water generated by drying clothes inside the washing and drying machine, thereby preventing a small amount of liquid in the gas from flowing to the ground after being sprayed out with the gas; and the inclined surface design of the first baffle in the blocking structure, and the combined design of the first baffle and the second baffle, can achieve a higher liquid blocking effect and reflux effect.

[0068] In some embodiments, the washer-dryer may be a portable dryer or an all-in-one washer-dryer.

[0069] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to specific details.

Claims

1. An exhaust device for a washer-dryer, mounted on a housing of the washer-dryer; characterized in that: The invention comprises an air inlet, an exhaust channel and an exhaust port; the air inlet, the exhaust channel and the exhaust port form an exhaust passage; wherein a blocking structure for blocking liquid is provided along the path of the exhaust passage; The air inlet guides the gas discharged from the washer-dryer and having a humidity difference with the outside into the exhaust channel, and the liquid in the gas flows back after passing through the blocking structure, and the gas is discharged from the exhaust port to the outside of the washer-dryer; The blocking structure comprises a first baffle plate, a plurality of air holes are provided on the first baffle plate, and the air holes form the exhaust port; The first baffle includes a first inclined surface and / or a second inclined surface, and the liquid in the gas having a humidity difference with the outside flows back along the first inclined surface and / or the second inclined surface; The blocking structure further comprises at least one second baffle plate arranged along the extension direction of the exhaust passage, a blocking portion is arranged in the middle of the second baffle plate, and a plurality of air holes are arranged at both ends of the blocking portion.

2. The exhaust device of the washer-dryer according to claim 1, characterized in that: The blocking structure further includes a sealing member disposed at the exhaust port, wherein the sealing member is configured to open and close the exhaust port.

3. The exhaust device of the washer-dryer according to claim 1, characterized in that: The flow path in the exhaust passage is non-linear, which increases the barrier effect on liquid in the exhaust gas.

4. The exhaust device of the washer-dryer according to claim 1, characterized in that: When the exhaust device is installed on the surface of the washer-dryer housing, the exhaust port faces a direction away from the ground, and the liquid in the gas with a humidity difference with the outside world flows back under the action of gravity.

5. The exhaust device of the washer-dryer according to claim 1, characterized in that: The cross-sectional area of ​​the exhaust port is greater than the cross-sectional area of ​​the intake port.

6. The exhaust device of the washer-dryer according to claim 1, characterized in that: In a direction from the air inlet to the air outlet, a cross-sectional area of ​​the exhaust passage gradually increases.

7. The exhaust device for a washer-dryer according to claim 1, characterized in that: The exhaust passage includes a side wall, and the width of the side wall gradually decreases from top to bottom.

8. The exhaust device of a washer-dryer according to claim 1, characterized in that: It also includes a mounting portion, which is located on both sides of the air inlet.

9. The exhaust device of a washer-dryer according to claim 1, characterized in that: The blocking structure further comprises a filter element, which is installed at the air inlet to filter the gas entering the exhaust channel and block the liquid.

10. A washer-dryer, characterized in that: An exhaust device for a washer-dryer comprising the exhaust device of any one of claims 1 to 9.

11. The washer-dryer according to claim 10, characterized in that: The exhaust device is installed after the dehumidification system, and the air inlet of the exhaust device is installed at the air outlet of the dehumidification system; The dehumidification system cools and dehumidifies the hot and humid air in the outer drum of the washer-dryer to form gas with a humidity difference from the outside, and discharges the gas to the exhaust device.

Images