CN219117803U - Filter assembly and drum-type laundry treating apparatus - Google Patents

Abstract

The utility model provides a filter assembly capable of improving filtering capability and a drum-type clothes treating apparatus with the filter assembly. The filter assembly includes: a filter housing; and a filter device provided in the filter duct and having a filter screen for filtering foreign matters in air flowing in the filter duct, wherein the filter duct inlet and the filter screen are completely staggered in a second direction intersecting the first direction when viewed in the first direction as an opening direction of the filter duct inlet, and the filter housing has opposite side walls facing both a windward side of the filter screen and the filter duct inlet in the first direction, and a first portion facing the filter duct inlet protrudes in a direction away from the filter duct inlet in the first direction with respect to a second portion facing the windward side of the filter screen in the opposite side walls.

Description

Filter assembly and drum-type laundry treating apparatus

Technical Field

The present utility model relates to a filter assembly and a drum-type laundry treating apparatus including the same.

Background

At present, there is an increasing demand for a drum-type laundry treatment apparatus having a drying function, and such a drum-type laundry treatment apparatus includes a washing and drying integrated machine having both a washing function and a drying function, a dryer having only a drying function, and the like. In a laundry treating apparatus having a drying function, a large amount of lint may be generated during drying. In order to prevent lint from entering the drying apparatus along with the flow of the drying air and adhering to the blower, the heater, etc., a filter screen for filtering lint in the drying air is generally provided in the drying apparatus.

As shown in fig. 12, the applicant of the present utility model describes a structure in which a filter screen 510 is extended in a substantially horizontal direction in a previously filed utility model application 202110982315.0 (patent document 1). However, in the structure of patent document 1, the size of the screen area is limited, and there is room for improvement in the filtering ability.

Disclosure of Invention

Problems to be solved by the utility model

The present utility model has been made in view of the above-described circumstances, and an object thereof is to provide a filter assembly capable of improving a filtering capability and a drum-type laundry treatment apparatus including the filter assembly.

Solution for solving the problem

In order to achieve the above object, the present utility model provides a filter assembly comprising: the filter comprises a filter shell, wherein a filter air channel is formed in the filter shell, and the filter shell is provided with a filter air channel inlet for air to flow into the filter air channel and a filter air channel outlet for air to flow out of the filter air channel; and a filter device provided in the filter duct, the filter device including a filter screen for filtering foreign matters in air flowing in the filter duct, the filter duct inlet and the filter screen being completely offset from each other in a second direction intersecting the first direction when viewed in the first direction, the filter housing having opposite side walls facing both a windward side of the filter screen and the filter duct inlet in the first direction, and a first portion of the opposite side walls facing the filter duct inlet protruding in a direction away from the filter duct inlet in the first direction with respect to a second portion of the opposite side walls facing the windward side of the filter screen.

Because the inlet of the filter air duct and the filter screen are completely staggered in the second direction crossing the first direction, the setting freedom degree of the filter screen is improved, and the area of the filter screen can be designed to be larger. Further, since the first portion opposite to the filter air duct inlet in the opposite side wall of the filter housing protrudes in the first direction away from the filter air duct inlet with respect to the second portion opposite to the filter screen, the length of the portion of the filter air duct between the filter air duct inlet and the first portion in the first direction becomes long. Thus, even in the filter module in which the filter duct inlet and the filter screen are completely displaced in the second direction in order to increase the filter screen area, the turning operation of the air flowing in from the filter duct inlet can be buffered, the air loss in the filter duct can be reduced, and the filtering capability can be improved.

Preferably, the average size of the first portions is smaller than the average size of the second portions in a third direction intersecting both the first direction and the second direction.

Since the average size of the first portion in the third direction is smaller than the average size of the second portion in the third direction, a large wind loss is liable to occur in a portion of the filter duct between the filter duct inlet and the first portion, and in this case, by projecting the first portion in a direction away from the filter duct inlet with respect to the second portion in the first direction, the wind loss in the filter duct can be reduced more remarkably, and the improvement of the filtering capability is facilitated.

Preferably, the first portion and the second portion are smoothly connected to each other.

Because the first part and the second part are connected smoothly, air can be smoothly conveyed from the part corresponding to the first part to the part corresponding to the second part in the filtering air duct, and the air loss can be further reduced.

Preferably, the filter device further includes a filter frame to which the filter screen is fixed, the filter frame having a positioning rib protruding toward an air outlet surface side of the filter screen in the first direction, and a protruding height of the positioning rib in the first direction being 8mm or more.

By positioning the filter screen by using the positioning rib protruding toward the air outlet face side of the filter screen in the first direction by a height of 8mm or more, it is possible to ensure a sufficient space in the portion of the filter duct on the air outlet face side of the filter screen, thereby suppressing an increase in wind loss due to unsmooth circulation of air on the air outlet face side of the filter screen.

Preferably, the filter frame has one side end face and the other side end face in the second direction, at least one of the one side end face and the other side end face being provided with at least one projection projecting from the filter frame in the second direction, the projection having an inclined guide face for guiding the attachment of the filter device and a positioning face for positioning the filter device in the second direction.

By providing at least one of the one end surface and the other end surface of the filter frame of the filter device with at least one protrusion having a guide surface and a positioning surface, when the filter device is mounted to the filter housing, the filter device can be simply mounted by guiding the mounting of the filter device by the guide surface of the protrusion, and the filter device can be reliably positioned in the second direction by the positioning surface of the protrusion.

Preferably, a wind guide surface for guiding the air flowing in from the inlet of the filter duct to the windward side of the filter screen is formed on an inner surface of the filter housing opposite to the opposite side wall.

Compared with the case of not arranging the wind guide surface, the air flowing in from the inlet of the filtering air channel is guided to the windward side of the filter screen by the wind guide surface, thereby being capable of inhibiting the vortex of the air generated between the inlet of the filtering air channel and the windward side of the filter screen and being beneficial to further reducing the wind loss.

Preferably, the air guiding surface extends smoothly from the inlet of the filtering duct toward the windward side of the filter screen along the direction in which air flows in the filtering duct.

The air guide surface smoothly extends from the inlet of the filtering air channel to the windward side of the filter screen, so that air can be smoothly and smoothly guided to the filter screen from the inlet of the filtering air channel, and the air loss can be further reduced.

Preferably, the opening area of the inlet of the filtering air duct is larger than the opening area of the outlet of the filtering air duct.

Through making the open area of filtering the wind channel entry be greater than the open area of filtering the wind channel export, can make more air inflow from the great filtration wind channel entry of open area to make the air in the filtration wind channel flow from the less filtration wind channel export of open area with faster velocity of flow, be favorable to improving the filtration ability of filtration subassembly.

Preferably, the filter air duct outlet is open along the second direction.

Compared with the case that the outlet of the filtering air channel is opened along the first direction, the opening of the outlet of the filtering air channel along the second direction can reduce the bending angle of the air flow in the filtering air channel, and the air can smoothly flow out of the outlet of the filtering air channel by means of the momentum flowing from the inlet of the filtering air channel to the filter screen in the second direction, so that the air loss is further reduced.

Preferably, the filter housing comprises a first filter housing having the filter tunnel inlet, the filter tunnel outlet and a filter device mounting portion for mounting the filter device, and a second filter housing having the opposite side walls, the filter tunnels being formed by combining the first filter housing and the second filter housing together.

The first filter housing and the second filter housing are combined to form the filter air duct, so that the filter air duct capable of reducing wind loss can be formed with a simple structure, and the filter device is easy to install.

The present utility model provides a drum-type laundry treating apparatus, characterized in that the drum-type laundry treating apparatus comprises: a housing; an outer groove supported within the housing; a drum having a bottomed cylindrical shape with one end opened, rotatably installed in the outer tub, for receiving laundry; a drying device for drying the laundry in the drum using heated air; and the filter assembly is provided with a fan, the fan is used for enabling air to flow in the filter air duct of the filter assembly, an outer groove air outlet is formed in the outer groove bottom wall of the outer groove, the inlet of the filter air duct is communicated with the outer groove air outlet, and the outlet of the filter air duct is communicated with the air inlet of the drying device.

In the drum type clothes treating apparatus, the filtering assembly can effectively filter the foreign matters such as filings in the air, and prevent the drying capacity from being reduced due to the adhesion of the foreign matters to the internal structure of the drying apparatus.

Preferably, the outer tank air outlet has a pair of arcuate sides extending along two concentric circles centered on the center of the outer tank bottom wall, respectively, and the filter air duct inlet is formed in a shape corresponding to the outer tank air outlet.

The outer groove air outlet is provided with a pair of arc edges, so that the influence on the annular reinforcing rib which is formed on the outer groove bottom wall and takes the center of the outer groove bottom wall as the center of a circle due to the arrangement of the outer groove air outlet can be reduced as much as possible, and the outer groove bottom wall is favorable for ensuring higher strength.

Preferably, the filter duct outlet is disposed radially outward of an outer-tank peripheral side wall of the outer tank, and a portion of the filter housing facing the outer-tank peripheral side wall is formed as a first wall portion formed as an arc-shaped surface corresponding to the outer-tank peripheral side wall.

By forming the first wall portion to be an arc-shaped surface corresponding to the outer groove peripheral side wall of the outer groove, the attachment of the filter assembly to the outer groove can be made more compact, and the space occupied by the filter assembly radially outside the outer groove peripheral side wall can be reduced.

Preferably, the filter housing has a planar second wall portion facing the first wall portion through the filter duct, and an inner side surface of a transition portion between the first wall portion and the second wall portion smoothly extends toward an inner peripheral surface of the filter duct outlet.

Since the inner side surface of the transition portion between the first wall portion and the second wall portion smoothly extends to the inner peripheral surface of the filter air duct outlet, air can be smoothly guided to the filter air duct outlet, and the air loss of the filter air duct can be reduced.

Preferably, the outlet of the filtering air duct is connected with the drying device through a corrugated pipe.

The filtering air duct outlet is connected with the drying device by the corrugated pipe, so that the vibration of the outer groove is prevented from being transmitted to the drying device by the filtering component by the telescopic corrugated pipe.

Preferably, the filter screen extends along a plane parallel to the outer tank bottom wall.

The filter screen extends along the plane parallel to the bottom wall of the outer tank, so that the filter screen with a larger filter area is arranged, and the filtering capacity of the filtering device can be improved.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present utility model, it is possible to provide a filter assembly capable of improving the filtering capability and a drum-type laundry treatment apparatus provided with the filter assembly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a perspective view of a drum-type laundry treating apparatus according to the present utility model, as seen from above and to the side.

Fig. 2 is a rear view of the drum-type laundry treating apparatus of fig. 1, as seen from the rear.

Fig. 3 is a rear view of the drying apparatus and the filter assembly of fig. 2 removed.

Fig. 4 is a perspective view of a state in which the drying device and the filter assembly are connected.

Fig. 5A is a perspective view of the filter assembly of the present utility model viewed from the side, fig. 5B is a perspective view of the filter assembly of the present utility model viewed from a different angle than fig. 5A, and fig. 5C is a perspective view of the filter assembly of the present utility model viewed from a different angle than fig. 5A and 5B.

Fig. 6 is a top view of the filter assembly of the present utility model.

Fig. 7 is a cross-sectional view A-A of the filter assembly of fig. 6.

Fig. 8 is an exploded perspective view of the filter assembly of the present utility model.

Fig. 9 is a front view of a state in which the flushing member is mounted to the filtering apparatus.

Fig. 10 is a sectional view B-B of fig. 9, wherein the right side view is an enlarged partial sectional view.

Fig. 11 is a sectional view H-H of fig. 9.

Fig. 12 is a sectional view showing the prior art.

Description of the reference numerals

1: a filter assembly; 2: a filter housing; 201: a first filter housing; 202: a second filter housing; 203: a first wall portion; 204: a second wall portion; 205: a transition section; 21: opposite side walls; 22: an air guiding surface; 3: an inlet of the filtering air duct; 4: an outlet of the filtering air duct; 5: a filtering device; 51: a filter screen; 52: a filter frame; 6: a blocking rib; 7: a water inlet nozzle; 8: a filter installation part; 9: a bellows; 10: a drum-type laundry treating apparatus; 11: an outer groove; 110: an outer groove bottom wall; 111: an outer tank air outlet; 111A, 111B: an arc edge; 112: a peripheral sidewall of the outer tank; 113: a laundry inlet; 114: reinforcing ribs; 12: a roller; 13: a drying device; 130: a drying device housing; 131: an air inlet; 132: an air outlet; 80: a blower; 100: a flushing member; 101: a first chamber; 102: a second chamber; 103: a third chamber; 200: a flushing member housing; 210: a water inlet; 211: a first portion; 213: a second portion; 219: a hole portion; 220: a top wall; 230: a bottom wall; 240: a sidewall; 521: positioning rib; a1: a first water outlet; a2: a second water outlet; a3: and a third water outlet.

Detailed Description

Next, a specific embodiment of the present utility model will be described with reference to the drawings.

The drum-type laundry treatment apparatus according to the present utility model will be described below by taking a washing and drying integrated machine having both a washing function and a drying function as an example. It will be understood by those skilled in the art that the drum-type laundry treating apparatus of the present utility model may be a dryer having only a drying function.

As shown in fig. 1, the drum-type laundry treating apparatus 10 includes: a housing (not shown); an outer groove 11 supported in the housing; a drum 12 rotatably installed in the outer tub 11 for receiving laundry; a drying device 13 for drying the laundry in the drum 12 using the heated air; and a filter unit 1 for filtering foreign matters such as lint in the drying air. For convenience of explanation, the front-rear direction, the up-down direction, and the left-right direction are defined in fig. 1, and the first direction corresponding to the front-rear direction, the second direction corresponding to the up-down direction, and the third direction corresponding to the left-right direction are defined in the following drawings. It will be appreciated by those skilled in the art that the directions specified herein are not intended to limit the actual arrangement of the laundry treating apparatus 10.

As shown in fig. 1, the outer tub 11 has a bottomed cylindrical shape having a laundry inlet 113 at one end. The outer tub 11 is mounted in the housing with the laundry inlet 113 facing forward, and is elastically supported by a lower damper (not shown) and an upper suspension spring (not shown), thereby preventing transmission of vibration of the outer tub 11 to the housing. As shown in fig. 1 to 3, the outer tank 11 has a cylindrical outer tank peripheral side wall 112 and a plate-like outer tank bottom wall 110, and a reinforcing rib 114 protruding rearward for improving the strength of the outer tank bottom wall 110 is provided on the outer surface of the outer tank bottom wall 110, and the reinforcing rib 114 includes an annular rib extending in the circumferential direction and a radial rib extending in the radial direction, and the annular rib and the radial rib intersect with each other.

As shown in fig. 1, the drum 12 has a bottomed cylindrical shape with one end opened, and accommodates laundry. The drum 12 is mounted in the outer tub 11 so as to open toward the laundry inlet 113 of the outer tub 11. A plurality of fine holes may be formed in the wall portion on the outer circumferential side and the wall portion on the bottom side of the drum 12, whereby the washing water and the heated air generated by the drying device 13 can flow between the outer tub 11 and the drum 12. The drum 12 is driven by a motor, not shown, and is rotatable about a rotation axis extending in the horizontal direction. The rotation direction of the drum 12 may be clockwise, counterclockwise, or may be continuously switched between the clockwise and counterclockwise directions when viewed from the front in fig. 1. The rotation axis of the drum 12 may be inclined upward toward the laundry inlet 113.

As shown in fig. 1, a drying device 13 having an integral structure is disposed above the outer tub 11, and the drying device 13 is configured to dry laundry in the drum 12 by using heated air. As shown in fig. 4, the drying device 13 includes: a drying device housing 130 having an air inlet 131 and an air outlet 132, the air inlet 131 and the air outlet 132 being respectively communicated with the inner cavity of the drum 12; an evaporator, not shown, for example, a microchannel evaporator, disposed in the drying device case 130, for dehumidifying the air guided from the drum 12; a condenser, not shown, for example, a microchannel condenser, which is disposed in the drying device case 130 at a position downstream of the evaporator in the air flow direction, and heats the air passing through the evaporator; and a blower 80 for flowing air so as to guide the air in the drum 12 into the drying device case 130 through the air inlet 131 and guide the air passing through the evaporator and the condenser into the drum 12. The drying device 13 further includes a compressor, not shown, for compressing the refrigerant flowing through the evaporator and the condenser.

As shown in fig. 1 to 4, the air inlet 131 of the drying device 13 communicates with the filter tunnel outlet 4 (see fig. 5A) of the filter assembly 1 via the bellows 9 that can be extended and contracted, and the filter assembly 1 is mounted with respect to the outer tub 11 such that the filter tunnel inlet 3 communicates with the outer tub air outlet 111 provided at the outer tub bottom wall 110 of the outer tub 11. Thereby, the vibration of the outer tub 11 can be prevented from being transmitted to the drying device 13 via the filter assembly 1 by the bellows 9. The air outlet 132 of the drying device 13 communicates with the inside of the outer tub 11 at the front end side (i.e., the laundry inlet 113 side) of the outer peripheral surface of the outer tub 11. In the present embodiment, by communicating the air outlet 132 with the front end side of the outer peripheral surface of the outer tub 11, the air heated by the drying device 13 can be directly supplied into the drum 12, and the air is not dispersed by the pores of the drum 12, as compared with the case where the air outlet 132 is communicated with the rear end side of the outer peripheral surface of the outer tub 11, and the laundry in the drum 12 can be dried more efficiently.

As shown in fig. 5A to 8, the filter assembly 1 includes a filter housing 2 and a filter device 5, the filter housing 2 includes a first filter housing 201 and a second filter housing 202, and a filter air duct is formed inside by combining the first filter housing 201 and the second filter housing 202. As means for combining the first filter housing 201 and the second filter housing 202, screw fastening, welding, or the like can be cited. The first filter housing 201 has a filter duct inlet 3 through which air flows into the filter duct, a filter duct outlet 4 through which air flows out of the filter duct, and a filter device mounting portion 8 to which the filter device 5 is locked. Wherein, the inlet 3 of the filtering air duct is openedThe opening area is preferably larger than the opening area of the filter duct outlet 4, and the opening area of the filter duct inlet 3 is preferably 1.5 times or more the opening area of the filter duct outlet 4, but is not limited thereto. As an example, the opening area of the filter tunnel inlet 3 is 7000mm ² The opening area of the outlet 4 of the filtering air duct is 4000mm ² . The filter housing 2 is not limited to the first filter housing 201 and the second filter housing 202, and may be an integrally molded housing, or may be a combination of three or more housings. In the case where the filter housing 2 is of an integrally formed structure, an opening may be provided at a proper position of the filter housing 2 to ensure an operation space required when the filter device 5 is mounted into the filter housing 2. After the filter device 5 is mounted, the opening is closed.

As shown in fig. 1 and 5A, the filter air duct outlet 4 is arranged radially outside the outer-tank peripheral side wall 112 of the outer tank 11, and a portion of the first filter housing 201 facing the outer-tank peripheral side wall 112 of the outer tank 11 is configured as a first wall portion 203, and the first wall portion 203 is formed into an arc-shaped surface corresponding to the outer-tank peripheral side wall 112 of the outer tank 11. The first filter housing 201 has a planar second wall portion 204 facing the first wall portion 203 through the filter duct, and an inner side surface of a transition portion 205 between the first wall portion 203 and the second wall portion 204 smoothly extends toward an inner peripheral surface of the filter duct outlet 4, thereby smoothly guiding air toward the filter duct outlet 4. The second wall 204 is not limited to a planar shape, and may be curved with an appropriate curvature. The shape of the second wall portion 204 is not limited as long as the air can be smoothly guided toward the filter stack outlet 4 by providing the transition portion 205.

As shown in fig. 3 and 5A, the outer tank air outlet 111 is provided on the outer surface of the outer tank bottom wall 110 of the outer tank 11, and has a pair of arcuate sides 111A, 111B extending along two concentric circles around the center of the outer tank bottom wall 110 of the outer tank 11, respectively, and the filter air duct inlet 3 is formed in a shape corresponding to the outer tank air outlet 111. The shape of the outer tank air outlet 111 is not limited as long as it can simultaneously ensure sufficient strength of the outer tank bottom wall 110 and a sufficient opening area of the filter air duct inlet 3, and may be any shape other than the shape having the pair of arcuate sides 111A, 111B.

As shown in fig. 2 and 7 to 8, the filter device 5 is provided in the filter duct, and includes a filter screen 51 for filtering foreign matters such as lint in the air flowing in the filter duct. In the case of the filter assembly 1 being mounted with respect to the outer tank 11, the filter screen 51 extends along a plane parallel to the outer tank bottom wall 110 of the outer tank 11. The filter mesh 51 may of course also extend along a plane inclined at a suitable angle with respect to the outer tank bottom wall 110 of the outer tank 11, but is preferably parallel to the outer tank bottom wall 110 of the outer tank 11. The filter device 5 further includes a filter frame 52, the filter screen 51 is fixed to the filter frame 52, the filter frame 52 includes a positioning rib 521 protruding toward the air outlet surface side of the filter screen 51 (i.e., the side facing the filter duct outlet 4 in fig. 7) in the first direction which is the opening direction of the filter duct inlet 3, and the protruding height of the positioning rib 521 in the first direction is 8mm or more, and more preferably 13mm or more. The upper limit of the protruding height of the positioning rib 521 in the first direction is not limited, and may be appropriately set according to the actual mounting demand. At least one protrusion 503 protruding from the filter frame 52 in the second direction is provided on one side end surface and the other side end surface of the filter frame 52, and the protrusion 503 has an inclined guide surface 501 for guiding the attachment of the filter device 5 and a positioning surface 502 for positioning the filter device 5 in the second direction. In fig. 8, only three protrusions 503 are shown provided on one end surface of the filter frame 52 in the second direction, but the protrusions 503 may be provided on the other end surface of the filter frame 52 in the second direction. At least one protrusion 503 may be provided on at least one of the one end surface and the other end surface of the filter frame 52 in the second direction. The positioning rib 521 and the protrusion 503 are positioned and locked in the filter device mounting portion 8, whereby the filter device 5 is mounted at a predetermined position. The filter device 5 may be attached to the filter device attachment portion 8 by other means than locking, for example, by screw fastening.

As shown in fig. 7, the filter tunnel inlet 3 and the filter mesh 51 are completely offset in a second direction orthogonal to the first direction and being the opening direction of the filter tunnel outlet 4 when viewed in the first direction. The second filter housing 202 has opposite side walls 21 opposite both the windward side of the filter mesh 51 and the filter tunnel inlet 3 in the first direction. In the opposite side wall 21, a first portion 211 opposite to the filter tunnel inlet 3 protrudes in a first direction away from the filter tunnel inlet 3 with respect to a second portion 213 opposite to the windward side of the filter mesh 51. As an example, when the protruding height of the positioning rib 521 in the first direction is about 13mm, the distance from the first portion 211 to the windward side of the filter mesh 51 in the first direction is about 46mm, and the distance from the second portion 213 to the windward side of the filter mesh 51 in the first direction is about 30 mm. The first portion 211 and the second portion 213 are smoothly connected to each other. The average size of the first sites 211 is smaller than the average size of the second sites 213 in a third direction orthogonal to both the first and second directions. That is, in the third direction, the first portion 211 is entirely narrower than the second portion 213. In addition, the relationship between the first direction and the third direction is not limited to being orthogonal to each other, and for example, the second direction may intersect at an angle other than 90 ° with respect to the first direction, and the third direction may intersect at an angle other than 90 ° with respect to the first direction and the second direction.

As shown in fig. 7, an air guide surface 22 is formed on an inner surface of the first filter housing 201 opposite to the opposite side wall 21. The air guide surface 22 extends smoothly from the filter duct inlet 3 toward the windward side of the filter screen 51 in the direction in which the air flows in the filter duct, for guiding the air flowing in from the filter duct inlet 3 toward the windward side of the filter screen 51.

The inventors of the present utility model have found through intensive studies and trial and error that the screen area of a filter unit in which a conventional screen is disposed in the horizontal direction as in patent document 1 is 4300mm ² The wind loss is 1029Pa, and the area of the filter screen of the filter assembly which is arranged along the plane parallel to the bottom wall 110 of the outer groove 11 reaches 12000mm ² The wind loss is about 2.8 times of that of the existing filter assembly, is 850Pa, and is about 83% of that of the existing filter assembly. I.e. with the presentCompared with the filter assembly, the filter assembly provided by the utility model can greatly enlarge the area of the filter screen and reduce the wind loss.

In addition, according to the present utility model, since the first portion 211 protrudes in the first direction away from the filter duct inlet 3 with respect to the second portion 213, the wind loss can be significantly reduced as compared with a structure in which the first portion 211 and the second portion 213 are aligned in the first direction. Specific test data are as follows.

From the test data, the filter assembly of the utility model can reduce the wind loss by about half, and has remarkable effect of reducing the wind loss.

In addition, as shown in fig. 8, the filter assembly 1 of the present utility model may further include a flushing member 100. As shown in fig. 9 to 11, the flushing member 100 includes a flushing member housing 200, and the flushing member housing 200 is formed as a part of the filter frame 52. A water inlet 210 is formed at the rinsing member housing 200, the water inlet 210 for introducing rinsing water into an inner chamber of the rinsing member housing 200. The interior chamber comprises a first chamber 101, a second chamber 102 and a third chamber 103. The first chamber 101 communicates with the water inlet 210 and has a first water outlet A1 for discharging wash water from the first chamber 101 to the second chamber 102. The second chamber 102 has a second water outlet A2 for discharging the washing water from the second chamber 102 to the third chamber 103. The third chamber 103 has a third water outlet A3 for discharging the washing water toward the washing target such as the filter screen. The flushing member 100 is attached to the filter frame 52 so as to flush the windward side of the filter mesh 51 from above by flushing water discharged from the third water outlet A3. At this time, the protrusion 503 is provided on the flushing member housing 200 and thus on one end surface of the filter frame 52 in the second direction.

As shown in fig. 10, the flush member housing 200 includes a top wall 220, a bottom wall 230, and side walls 240 that form an interior chamber. As shown in fig. 8 and 9, the flushing member case 200 is provided with a water inlet nozzle 7 protruding, the water inlet nozzle 7 is provided with a water inlet 210, a seal ring may be fitted around the water inlet nozzle 7, and the water inlet nozzle 7 is fitted into a hole 219 formed in the filter case 2 together with the seal ring. The flushing member housing 200 is not limited to an integral structure, and may be formed by combining a plurality of flushing member housings. For example, the washing member housing 200 may include a first washing member housing constituting an upper half of the washing member housing 200 and a second washing member housing constituting a lower half of the washing member housing 200, and the water inlet 210 is formed at the first washing member housing, thereby forming the inner chamber by combining the first washing member housing and the second washing member housing together. As means for combining the first flushing member housing and the second flushing member housing, screw fastening, welding, or the like may be mentioned.

In fig. 11, the first water outlet A1 is shown to include a plurality of first water outlet holes uniformly arranged along the extending direction of the inner chamber, but may be configured to include continuous elongated holes extending along the extending direction of the inner chamber. In order to ensure uniform discharge of the washing water to the washing target, the first water outlet A1 preferably includes a plurality of first water outlet holes uniformly arranged along the extending direction of the inner chamber. Regardless of the configuration and arrangement of the first water outlet A1, it is preferable that the opening area of the first water outlet A1 is smaller than the opening area of the water inlet 210. In the case where the first water outlet A1 includes a plurality of first water outlet holes, the opening area of the first water outlet A1 is a sum of the opening areas of the respective plurality of first water outlet holes.

The second water outlet A2 may include a continuous elongated hole extending along the extending direction of the inner chamber. In the present embodiment, the second water outlet A2 is formed by an elongated gap extending in the extending direction of the inner chamber, which is formed between the rib 6 protruding from the top wall 220 toward the bottom wall 230 and extending in the extending direction of the inner chamber, and the bottom wall 230. The position of the upper end edge in the height direction of the second water outlet A2 (i.e., the position of the lower end edge of the bead 6) is below the center position in the height direction of the first water outlet A1. Accordingly, the portion of the water flow flowing out of the first water outlet A1, which is more likely to form the water spray, is blocked by the rib 6, so that the water flow flowing out of the second water outlet A2 is ensured to be more stable, and the flushing water discharged to the flushing object is more uniform. The form and the formation of the second water outlet A2 are not limited as long as the flush water can be ensured to be more uniform. The opening area of the second water outlet A2 is not limited.

In fig. 11, the third water outlet A3 is shown to include a plurality of third water outlet holes uniformly arranged along the extending direction of the inner chamber, but may be provided to include continuous elongated holes extending along the extending direction of the inner chamber. In view of ensuring uniform discharge of the washing water to the washing target and ensuring strength of the wall portion forming the third water outlet A3, it is preferable that the third water outlet A3 includes a plurality of third water outlet holes uniformly arranged along the extending direction of the inner chamber. The opening area of the third water outlet A3 is smaller than that of the first water outlet A1.

The present utility model has been described above by way of embodiments and modifications thereof. However, the present utility model is not limited to the above-described embodiment and its modification. Variations of the above-described embodiments, which are obtained by implementing various modifications, which will be apparent to those skilled in the art, are also included in the present utility model within a range not departing from the gist of the present utility model.

Claims (16)

1. A filter assembly, characterized in that,

the filter assembly includes: the filter comprises a filter shell, wherein a filter air channel is formed in the filter shell, and the filter shell is provided with a filter air channel inlet for air to flow into the filter air channel and a filter air channel outlet for air to flow out of the filter air channel; and a filter device provided in the filter duct and having a filter screen for filtering foreign matters in air flowing in the filter duct,

the filter tunnel inlet and the filter screen are completely staggered in a second direction crossing the first direction when being observed along the first direction which is the opening direction of the filter tunnel inlet,

the filter housing has opposite side walls opposite both a windward side of the filter screen and the filter tunnel inlet in the first direction,

in the opposite side wall, a first portion opposite to the filter air duct inlet protrudes in the first direction away from the filter air duct inlet with respect to a second portion opposite to the windward side of the filter screen.

2. The filter assembly of claim 1, wherein the filter assembly comprises a filter housing,

the average size of the first sites is smaller than the average size of the second sites in a third direction intersecting both the first direction and the second direction.

3. A filter assembly as claimed in claim 1 or 2, wherein,

the first portion and the second portion are smoothly connected to each other.

4. A filter assembly as claimed in claim 1 or 2, wherein,

the filter device further comprises a filter frame, the filter screen is fixed on the filter frame, the filter frame is provided with a positioning rib part protruding towards the air outlet surface side of the filter screen in the first direction, and the protruding height of the positioning rib part in the first direction is more than 8 mm.

5. The filter assembly of claim 4, wherein the filter assembly comprises a filter housing,

the filter frame has one side end face and another side end face in the second direction, at least one of the one side end face and the another side end face being provided with at least one protrusion protruding from the filter frame in the second direction, the protrusion having an inclined guide face for guiding the attachment of the filter device and a positioning face for positioning the filter device in the second direction.

6. A filter assembly as claimed in claim 1 or 2, wherein,

an air guide surface for guiding air flowing in from the inlet of the filtering air duct to the windward side of the filter screen is formed on the inner surface of the filtering shell opposite to the opposite side wall.

7. The filter assembly of claim 6, wherein the filter assembly comprises a filter housing,

the wind guide surface smoothly extends from the inlet of the filtering air duct to the windward side of the filter screen along the flowing direction of air in the filtering air duct.

8. A filter assembly as claimed in claim 1 or 2, wherein,

the opening area of the inlet of the filtering air duct is larger than that of the outlet of the filtering air duct.

9. A filter assembly as claimed in claim 1 or 2, wherein,

the filter air duct outlet is open along the second direction.

10. A filter assembly as claimed in claim 1 or 2, wherein,

the filter housing comprises a first filter housing having the filter tunnel inlet, the filter tunnel outlet, and a filter device mounting portion for mounting the filter device, and a second filter housing having the opposite side walls,

the filter tunnel is formed by combining the first filter housing and the second filter housing together.

11. A drum type laundry treating apparatus, characterized in that,

the drum-type laundry treating apparatus includes:

a housing;

an outer groove supported within the housing;

a drum having a bottomed cylindrical shape with one end opened, rotatably installed in the outer tub, for receiving laundry;

a drying device for drying the laundry in the drum using heated air; and

the filter assembly of any one of claim 1 to 10,

the drying device is provided with a fan which is used for enabling air to flow in the filtering air duct of the filtering assembly,

an outer groove air outlet is arranged on the outer groove bottom wall of the outer groove, the inlet of the filtering air duct is communicated with the outer groove air outlet,

the outlet of the filtering air duct is communicated with the air inlet of the drying device.

12. A drum-type laundry treating apparatus according to claim 11, wherein,

the outer groove air outlet is provided with a pair of arc edges which extend along two concentric circles taking the center of the bottom wall of the outer groove as the center of the circle, and the filter air duct inlet is formed into a shape corresponding to the outer groove air outlet.

13. A drum-type laundry treating apparatus according to claim 11, wherein,

the filter duct outlet is arranged radially outside the outer-tank peripheral side wall of the outer tank, and a portion of the filter housing facing the outer-tank peripheral side wall is formed as a first wall portion formed as an arc surface corresponding to the outer-tank peripheral side wall.

14. A drum-type laundry treating apparatus according to claim 13, wherein,

the filter housing has a planar second wall portion facing the first wall portion through the filter duct, and an inner side surface of a transition portion between the first wall portion and the second wall portion smoothly extends toward an inner peripheral surface of the filter duct outlet.

15. A drum-type laundry treating apparatus according to claim 11, wherein,

the outlet of the filtering air duct is connected with the drying device through a corrugated pipe.

16. A drum-type laundry treating apparatus as claimed in any one of claims 11 to 15, wherein,

the filter screen extends along a plane parallel to the outer tank bottom wall.

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