Clothes dryer and lint separating device therefor

Abstract

The application discloses a clothes dryer and a lint separating device thereof, which comprises a filtering air duct for separating the lint in the wet hot air discharged from the clothes dryer, a collecting air duct for collecting the separated lint in the filtering air duct, and a communication port arranged on the filtering air duct or a partition plate for connecting the filtering air duct and the collecting air duct; the filtering air duct is provided with an inclined sieve plate capable of vibrating due to airflow change, which comprises a first sieve plate fixed in the filtering air duct and arranged to be inclined downward at the side opposite to the side with the communication port, and a second sieve plate fixed at the lower end of the communication port and arranged to be inclined upward; the first sieve plate and the second sieve plate partially cover the cross section of the filtering air duct and partially overlap in the covering range; the above scheme realizes the separation and collection of the lint mixed in the wet hot air, avoids the lint from adhering to the sieve plate and affecting the circulation efficiency of the circulating air path of the clothes dryer, and further improves the drying efficiency of the clothes dryer.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of clothes dryers, in particular to a clothes dryer and a lint separating device thereof. BACKGROUND

[0002] During the operation of the clothes dryer, lint and fluff on the clothes inevitably flow with the drying air and are blocked by the lint filter device and remain on the lint filter device. The lint and fluff accumulate on the lint filter device with the use of the clothes dryer, which causes obstruction to the flow of the drying air, resulting in reduced drying efficiency and poor drying effect of the clothes dryer.

[0003] In order to solve this problem, the lint filter device is usually provided in a detachable structure in the prior art, and the filter device needs to be disassembled and cleaned after a period of use of the clothes dryer, or the filter device is cleaned by spraying water thereon by a cleaning device, so as to ensure the normal operation of the clothes dryer.

[0004] A lint filter device is disclosed in Chinese Patent Application No. CN201210575631.7, which comprises a first lint filter layer, a second lint filter layer and a third lint filter layer. The first lint filter layer and the second lint filter layer are installed below the door body of the front air duct at the air outlet of the dryer drum and are mutually clamped. The third lint filter layer is arranged in the internal air path of the dryer. The lint is filtered and collected by the multiple filter layers, and the filter device is removed for cleaning. Although the above-mentioned scheme realizes the filtering and collection of the lint, the lint still adheres to the filter screen, which causes resistance to the flow of the drying air. If the user cannot clean the filter screen in time, the drying efficiency of the clothes dryer will be greatly reduced.

[0005] A cleaning system for a lint filter is disclosed in Chinese Utility Model Patent Application No. CN201920462931.1, which comprises a spray cleaning device for flushing the lint on the lint filter, and a collection box connected to the lower part of the lint filter for collecting the lint flushed from the lint filter. When the lint filter is disassembled for cleaning, the collection box can also be disassembled and cleaned. Although the above-mentioned scheme realizes the cleaning of the lint filter and the collection of the lint flushed from the lint filter into the collection box, the flow speed of the drying air in the clothes dryer will still change with the attachment of the lint during a single operation process, and the use of the flushing device to clean the lint filter also causes waste of water resources.

[0006] Therefore, the present application is proposed. SUMMARY

[0007] The present application aims at providing a lint separating device for a clothes dryer to solve the problems in the prior art.

[0008] Another aspect of the present application provides a clothes dryer with a lint separating device for a clothes dryer to avoid lint accumulation in the separating device and reduce the filtering effect.

[0009] To achieve the above-mentioned purpose, the first aspect of the present application provides a lint separating device for a clothes dryer, comprising an air duct body with an air inlet and an air outlet, two air ducts inside the air duct body connected with the air inlet and the air outlet, respectively,

[0010] a filtering air duct with a sieve plate for filtering lint;

[0011] a collecting air duct arranged side by side with the filtering air duct for collecting the lint intercepted by the sieve plate;

[0012] The sieve plate extends from the side far away from the collecting air duct to the side close to the collecting air duct and is arranged obliquely along the air outlet direction in the filtering air duct, and a communication port is arranged between the filtering air duct and the collecting air duct at the side corresponding to the lower side of the sieve plate for guiding the lint intercepted by the sieve plate into the collecting air duct.

[0013] The sieve plate has through holes arranged in a mesh shape to allow the airflow to pass through smoothly while blocking the lint, and the lint blocked by the sieve plate can more easily enter the collecting air duct through the communication port, avoiding the accumulation of lint in the filtering air duct and reducing the separation efficiency and the flow speed of the drying air.

[0014] The sieve plate comprises:

[0015] a first sieve plate covering the filtering air duct and extending into the communication port.

[0016] Further, one end of the first sieve plate is fixed to the side of the filtering air duct far away from the collecting air duct, and the other end extends into the communication port and contacts the lower edge of the communication port.

[0017] In the above-mentioned scheme, the first sieve plate covering the filtering air duct guides the lint to the communication port, realizing the filtering of the lint in the airflow, and the first sieve plate contacts the lower edge of the communication port, avoiding the lint returning to the filtering air duct from the gap between the first sieve plate and the lower edge of the communication port and affecting the filtering effect.

[0018] Alternatively, as an alternative to the above-mentioned scheme, the sieve plate comprises:

[0019] A first sieve plate is fixed on the side of the filtering air duct away from the collecting air duct and extends from the side away from the collecting air duct to the communication port;

[0020] A second sieve plate is fixed on the lower edge of the communication port and extends upward from the lower edge of the communication port at an angle to the side of the filtering air duct close to the collecting air duct;

[0021] The first sieve plate and the second sieve plate are not in contact and the second sieve plate is above the first sieve plate.

[0022] The above scheme realizes multi-stage filtering of the lint through the staggered first sieve plate and the second sieve plate, and improves the filtering effect.

[0023] Preferably, the first sieve plate is parallel to the second sieve plate.

[0024] Preferably, the angle between the sieve plate and the side of the filtering air duct on which the sieve plate is fixed is 30°.

[0025] The angle in the above preferred scheme is a preferred value of the sieve plate setting angle obtained by the technical personnel on the basis of a large number of experiments. The sieve plate set at this angle can not only fully block the lint, but also better guide the lint, so that the lint is not easy to stay on the sieve plate, and further improves the speed of the lint discharging from the filtering air duct.

[0026] Further, the projection of the first sieve plate on the cross section of the filtering air duct covers the side away from the collecting air duct, the projection of the second sieve plate on the cross section of the filtering air duct covers the side close to the collecting air duct, and the projections of the first sieve plate and the second sieve plate on the cross section of the filtering air duct partially overlap.

[0027] In the above scheme, neither the first sieve plate nor the second sieve plate covers the cross section of the filtering air duct. By partially overlapping the coverage ranges of the first sieve plate and the second sieve plate, the lint blocked by the first sieve plate moves along the inclined direction of the first sieve plate and falls on the second sieve plate, and enters the communication port along the second sieve plate. Without reducing the blocking effect of the sieve plate, the lint can be discharged from the filtering air duct faster under the driving of part of the airflow.

[0028] Further, a plurality of communication ports are arranged between the collecting air duct and the filtering air duct in the air outlet direction, and a sieve plate corresponding to each communication port is arranged in the filtering air duct.

[0029] The above scheme realizes multi-stage filtering of the air containing the lint by arranging a plurality of communication ports, and improves the separation effect of the separation device.

[0030] Further, the size of the communication port gradually decreases in the air outlet direction.

[0031] The closer to the air outlet, the less the wire scraps, and the structural stability of the wire scrap separation device is improved by gradually reducing the size of the communication port under the filtering of the multi-layer sieve plate.

[0032] Further, the air duct body is provided with a partition plate arranged in the air outlet direction, the air duct body is divided into the collection air duct and the filtering air duct, and the communication port is arranged on the partition plate.

[0033] Preferably, the communication port has the same width as the partition plate, and the partition plate is divided into at least two parts.

[0034] Further, the lower edge of the communication port is provided with a reinforcing rib arranged in the same direction as the second sieve plate, and the second sieve plate is fixed on the reinforcing rib.

[0035] The side of the collection air duct away from the filtering air duct is provided with a protrusion protruding into the collection air duct, and the protrusion is opposite to the communication port.

[0036] The protrusion and the reinforcing rib generate a Venturi effect at the communication port, so that the wire scraps can more easily enter the collection air duct through the communication port and be more smoothly discharged from the collection air duct under the driving of the air flow entering from one side of the collection air duct.

[0037] Further, the cross-sectional area of the collection air duct is smaller than that of the filtering air duct.

[0038] The cross-sectional area of the collection air duct is smaller than that of the filtering air duct, so that more air flow passes through the filtering air duct for separation, avoiding the reduction of the separation effect.

[0039] Further, the upper end of the partition plate is provided with a guide surface inclined to the side where the filtering air duct is located.

[0040] The guide surface in the above scheme guides the air mixed with wire scraps to better enter the filtering air duct, avoiding a large amount of air mixed with wire scraps directly entering the collection air duct and thus reducing the separation effect on the wire scraps.

[0041] Further, the sieve plate has a flexible structure and can vibrate when the air flow changes.

[0042] In the above scheme, the sieve plate can be a flexible sieve plate, or other flexible structures can be used to realize vibration, small amplitude vibration is generated when the air flow flows, and the guiding effect of the sieve plate on the wire scraps is further improved, so that the wire scraps are more difficult to adhere to the sieve plate.

[0043] The second aspect of the application provides a clothes dryer with the above wire scrap separation device.

[0044] The beneficial effects of the present application are: a collection air duct is separately arranged outside the filtering air duct, the wire scraps are separated and guided by the screen plate arranged obliquely in the filtering air duct, the real-time cleaning of the screen plate is realized during the operation of the clothes dryer, the wire scraps are prevented from remaining in the filtering air duct to affect the drying effect of the clothes dryer, the wire scraps are more easily discharged from the communication port under the premise of not affecting the separation effect of the filtering air duct on the wire scraps, the drying effect of the clothes dryer is further improved, the separation effect on the wire scraps is further improved by arranging multiple communication ports and multiple groups of screen plates, the filtering air duct and the collection air duct are integrally arranged and separated by the partition plate, the size of the wire scrap separation device is reduced, the cooperation of the protrusion arranged in the collection air duct and the convex rib extended from the lower end of the communication port generates a Venturi effect at the communication port, so that the wire scraps are more easily guided into the collection air duct, the collection air duct and the filtering air duct are simultaneously communicated with the air outlet in the clothes dryer, and the cross-sectional area of the collection air duct is smaller than that of the filtering air duct, only a small part of air flow directly enters from the collection air duct, which avoids affecting the separation effect of the wire scrap separation device on the wire scraps, so that the wire scraps in the collection air duct can be more smoothly discharged along the collection air duct, and the negative pressure area is avoided in the collection air duct to cause the wire scraps to adhere. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is a sectional view of the wire scrap separation device of the present application.

[0046] Figure 2 It is a structural view of the wire scrap separation device of the present application.

[0047] In the figure: 1, filtering air duct; 2, collection air duct; 3, first screen plate; 4, communication port; 5, second screen plate; 6, partition plate; 61, guide surface; 62, convex rib; 7, protrusion. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings, and those skilled in the art can understand that the following embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0049] In the description of the present application, unless otherwise explicitly specified and limited, the terms "arranged", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, and those skilled in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0050] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0051] Embodiment one

[0052] As an embodiment of the present application, the embodiment provides a lint separation device, comprising a filter air duct 1 and a collection air duct 2 arranged integrally, and the filter air duct 1 and the collection air duct 2 are separated by a partition 6.

[0053] In the embodiment, as shown in Figure 1 and Figure 2 , the lower part of the partition 6 is provided with three communication openings 4, and the size of the three communication openings 4 gradually decreases along the air outlet direction.

[0054] In the above scheme, under the filtration of the multi-layer sieve plate 4, the closer to the air outlet, the less the lint, and by gradually reducing the size of the communication opening 4, the structural stability of the lint separation device is improved.

[0055] Each communication opening 4 is provided with an inclined sieve plate, which comprises,

[0056] The first sieve plate 3 has a fixed end, and the first sieve plate 3 is fixed to the side wall on the side opposite to the side of the filter air duct 1 provided with the communication opening 4 by the fixed end, and is arranged downwardly inclined;

[0057] The second sieve plate 5 has a fixed end, and the second sieve plate 5 is fixed to the lower end of the communication opening 4 by the fixed end, and is arranged upwardly inclined;

[0058] The first sieve plate 3 is located above the second sieve plate 5, and the first sieve plate 3 and the second sieve plate 5 are parallel to each other.

[0059] Further, the included angle between the sieve plate and the side of the filter air duct 1 on which the sieve plate is fixed is 30°.

[0060] In the above scheme, the degree of the included angle between the sieve plate and the side of the filter air duct 1 on which the sieve plate is fixed is the best angle of the sieve plate inclination obtained by technicians on the basis of a large number of experiments. The sieve plate arranged at this angle can guide the lint sufficiently while blocking the lint, avoiding the lint adhering to the sieve plate to affect the drying efficiency of the clothes dryer.

[0061] Further, the first sieve plate 3 and the second sieve plate 5 partially cover the cross section of the filter air duct 1, and the coverage ranges of the first sieve plate 3 and the second sieve plate 5 partially overlap and do not contact each other.

[0062] The above scheme, under the premise of meeting the blocking and separation of the lint by the screen plate, realizes faster discharge of the lint from the filtering air duct 1 by the staggered first screen plate 3 and second screen plate 5, and improves the drying efficiency of the clothes dryer.

[0063] Further, the screen plate has flexibility and can vibrate when the air flow changes.

[0064] The flexible screen plate vibrates under the influence of the change of the air flow, so that the lint is more easily detached from the screen plate and enters the collection air duct 2 through the communication port 4 under the guidance of the screen plate, avoiding the influence of the lint adhering to the screen plate on the drying efficiency of the clothes dryer.

[0065] Further, the communication port 4 has the same width as the partition plate 6, and the partition plate 6 is divided into four parts arranged in parallel and spaced apart along the direction of the air flow.

[0066] The above scheme avoids the accumulation of lint in the filtering air duct 1 due to the blocking of the lint by the partition plate 6 on both sides of the communication port 4, so that the lint can more easily enter the collection air duct 2.

[0067] Further, the lower end of the communication port 4 is provided with a protruding rib 62 inclined upward at an angle with the partition plate 6, and the second screen plate 5 is fixed on the protruding rib 62; the side opposite to the partition plate 6 inside the collection air duct 2 is provided with a protruding structure 7 protruding into the collection air duct 2, and the protrusion is opposite to the position of the communication port 4.

[0068] The protruding structure 7 cooperates with the protruding rib 62 at the communication port 4 to generate a low pressure area by the Venturi effect, so that the lint can be more smoothly discharged from the filtering air duct 1, avoiding the accumulation of the lint in the filtering air duct 1 to affect the drying efficiency of the clothes dryer.

[0069] On the basis of the above scheme, further, the upper ends of the filtering air duct 1 and the collection air duct 2 are communicated with the air outlet inside the clothes dryer, and the cross-sectional area of the collection air duct 2 is smaller than that of the filtering air duct 1.

[0070] The air flowing out of the air outlet of the clothes dryer enters the filtering air duct 1 and the collection air duct 2 at the same time, avoiding the generation of negative pressure at the upper end of the collection air duct 2 and thus the residue of the lint, affecting the filtering effect; the cross-sectional area of the collection air duct 2 is smaller than that of the filtering air duct 1, so that more air flow passes through the filtering air duct 1 for separation, avoiding the reduction of the separation effect.

[0071] Further, the upper end of the partition plate 6 is provided with a guide surface 61 inclined to the side where the filtering air duct 1 is located, guiding most of the air flowing out of the air outlet to enter the filtering air duct 1, and only a small part of the air enters the collection air duct 2, improving the separation effect of the separation device.

[0072] Embodiment two

[0073] As another embodiment of the present application, the embodiment provides a lint separating device, comprising a filtering air duct and a collecting air duct which are integrally arranged and separated by a partition.

[0074] In the embodiment, the lower part of the partition is provided with a communication port, and a sieve plate is arranged in the filtering air duct and inclined to the communication port, wherein the sieve plate comprises,

[0075] a first sieve plate covering the filtering air duct and comprising two fixed ends respectively located at opposite sides of the first sieve plate, one of which is fixed to the side wall of the side of the filtering air duct opposite to the side provided with the communication port, and the other is fixed to the lower end of the communication port;

[0076] The above scheme fixes the first sieve plate in the filtering air duct and covers the cross section of the filtering air duct, and the side of the first sieve plate located relatively lower is fixed to the lower end of the communication port, so that the lint can move along the inclined direction of the first sieve plate and enter the collecting air duct through the communication port while achieving the filtering of the lint,

[0077] Further, the included angle between the sieve plate and the side of the filtering air duct on which the sieve plate is fixed is 30°.

[0078] In the above scheme, the degree of the included angle between the sieve plate and the side of the filtering air duct on which the sieve plate is fixed is the best angle of the sieve plate inclination obtained by technicians on the basis of a large number of experiments. With this angle, the sieve plate can guide the lint sufficiently while blocking the lint, avoiding the lint adhering to the sieve plate to affect the drying efficiency of the clothes dryer.

[0079] Further, the sieve plate has flexibility and can vibrate when the air flow changes.

[0080] The flexible sieve plate vibrates under the influence of the change of the air flow, so that the lint is more easily detached from the sieve plate and enters the collecting air duct through the communication port under the guidance of the first sieve plate, avoiding the lint adhering to the first sieve plate to affect the drying efficiency of the clothes dryer.

[0081] Further, the lower end of the communication port is provided with a convex rib inclined upward at an angle with the partition, and the side of the first sieve plate extending to the communication port is fixed to the convex rib; a convex structure protruding into the collecting air duct is arranged on the side of the collecting air duct opposite to the partition.

[0082] The convex structure and the convex rib cooperate at the communication port to generate a low pressure area by the Venturi effect, so that the lint can be more smoothly discharged from the filtering air duct, avoiding the lint from accumulating in the filtering air duct to affect the drying efficiency of the clothes dryer.

[0083] Embodiment three

[0084] As another embodiment of the present application, the embodiment provides a lint separating device having the same structure as that of the first embodiment, with the difference that in the embodiment, the filtering air duct and the collecting air duct are independent of each other, the filtering air duct is communicated with the air outlet inside the clothes dryer, two communication openings are arranged on the filtering air duct along the air flow direction, and the filtering air duct and the collecting air duct are communicated with each other through the two communication openings.

[0085] Embodiment four

[0086] As another embodiment of the present application, the embodiment provides a lint separating device having the same structure as that of the first embodiment, with the difference that in the embodiment, two communication openings are arranged on the partition plate 6.

[0087] Embodiment five

[0088] As another embodiment of the present application, the embodiment provides a lint separating device having the same structure as that of the first embodiment, with the difference that in the embodiment, the side of the sieve plate connected with the inner wall of the air duct is provided with a spring, and the sieve plate is vibrated under the influence of the air flow change through the spring.

[0089] The present application also provides a clothes dryer having the lint separating device described above, in particular:

[0090] Embodiment six

[0091] As another embodiment of the present application, the embodiment provides a clothes dryer having the lint separating device described in the first embodiment.

[0092] In the embodiment, the lint separating device is located inside the clothes dryer and is detachably installed below the inner cylinder of the clothes dryer, the air inlet end of the lint separating device is connected with the air outlet on the window gasket of the clothes dryer, and the air outlet end of the lint separating device is connected with the circulating air path of the clothes dryer.

[0093] After the clothes dryer is started, the air supply system sends dry hot air into the clothes dryer, and then the dry hot air takes away the water vapor in the clothes to form humid hot air, which enters the separating device through the air outlet, and the guide surface guides most of the humid hot air into the filtering air duct, and only a small part of the humid hot air enters the collecting air duct.

[0094] The humid hot air entering the filtering air duct passes through the sieve plate and causes the sieve plate to vibrate, the lint in the humid hot air is separated under the filtration of the sieve plate, and under the vibration of the sieve plate, the lint is guided into the collecting air duct from the communication opening along the inclined direction of the sieve plate, the humid hot air passing through the sieve plate does not contain lint, and after being separated through the filtering air duct, the humid hot air continues to circulate along the circulating air path of the clothes dryer;

[0095] Meanwhile, the small part of the hot and humid air directly entering the collecting air duct flows through the protruding structure inside the collecting air duct, and forms a negative pressure area at the communicating port, thereby adsorbing the separated lint in the filtering air duct and entering the collecting air duct with the small part of the hot and humid air flowing out, so as to prevent the lint from accumulating in the collecting air duct.

[0096] Embodiment Seven

[0097] As another embodiment of the present application, the embodiment provides a clothes dryer with the lint separating device as described in Embodiment Two, and the working process of the lint separating device is as described in Embodiment Six.

[0098] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and the equivalent embodiments with equivalent changes can be obtained. The embodiments in the above embodiments can be further combined or replaced, as long as they do not depart from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. A lint separating device for a clothes dryer, comprising an air duct body having an air inlet and an air outlet, characterized in that, The air duct body is internally provided with two air ducts communicating with the air inlet and the air outlet, The filtering air duct is provided with a sieve plate for filtering the lint; The collecting air duct is arranged side by side with the filtering air duct and is used for collecting the lint intercepted by the sieve plate; The sieve plate extends from the side far away from the collecting air duct to the side close to the collecting air duct and is arranged in an inclined manner along the air outlet direction in the filtering air duct, and the filtering air duct and the collecting air duct are provided with a communication port arranged at the lower side of the sieve plate for guiding the lint intercepted by the sieve plate into the collecting air duct; The sieve plate comprises, The first sieve plate is fixed at the side far away from the collecting air duct in the filtering air duct and extends from the side far away from the collecting air duct to the communication port; The second sieve plate is fixed at the lower edge of the communication port and extends upward from the lower edge of the communication port at an angle to the side close to the collecting air duct in the filtering air duct; The first sieve plate and the second sieve plate are not in contact with each other and are located above the second sieve plate.

2. The lint separating device of claim 1, wherein The first sieve plate is parallel to the second sieve plate.

3. The lint separating apparatus of claim 1, wherein The projection of the first sieve plate on the cross section of the filtering air duct covers the side far away from the collecting air duct, the projection of the second sieve plate on the cross section of the filtering air duct covers the side close to the collecting air duct, and the projections of the first sieve plate and the second sieve plate on the cross section of the filtering air duct partially overlap.

4. The lint separating apparatus of any one of claims 1-3, wherein, A plurality of communication ports are arranged in the air outlet direction between the collecting air duct and the filtering air duct, and the filtering air duct is provided with a sieve plate corresponding to each communication port.

5. The lint separating device of claim 4, wherein, The sieve plate has a flexible structure and can vibrate when the air flow changes.

6. The lint separating apparatus of any one of claims 1-3, wherein, The air duct body is provided with a partition plate arranged in the air outlet direction, which separates the air duct body into the collecting air duct and the filtering air duct, and the communication port is arranged on the partition plate.

7. The lint separating apparatus of claim 6, wherein the first and second rotatable members are arranged to rotate in opposite directions. The lower edge of the communication port is provided with a convex rib arranged in the same direction as the second sieve plate, and the second sieve plate is fixed on the convex rib; The side far away from the filtering air duct in the collecting air duct is provided with a protrusion protruding into the collecting air duct, and the protrusion is opposite to the communication port.

8. A clothes dryer having the lint separating device according to any one of claims 1-7.

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