Filter screen, drainer, sink and sink anti-clogging control method

Abstract

The application discloses a filter screen, a water drainer, a sink and a sink anti-blocking control method. The filter screen comprises a first filter screen and a second filter screen. The second filter screen is at least partially located in the first filter screen and can reciprocate along the axis of the first filter screen. The above scheme can at least prevent the filter screen from being blocked.

Description

Filter screens, drains, sinks, and sink anti-clogging control methods Technical Field

[0001] This invention generally relates to the field of kitchen equipment technology, and specifically to a filter, drainer, sink, and sink anti-clogging control method. Background Technology

[0002] In modern kitchen sinks, to prevent food scraps (garbage) from being flushed directly into the drain and causing blockages, a strainer (also called a filter basket) is usually installed at the drain outlet. While this solves the problem of food scraps directly entering the drain and causing blockages, the scraps themselves can clog the strainer, requiring frequent manual emptying. Because the strainer contains food scraps and is relatively dirty, cleaning it by hand can be psychologically daunting for some users. Summary of the Invention

[0003] This application aims to provide a filter, drainer, sink, and sink anti-clogging control method, at least for preventing filter clogging.

[0004] In a first aspect, the present invention provides a filter screen, comprising:

[0005] First filter;

[0006] A second filter screen is located at least partially within the first filter screen and is reciprocating along the axis of the first filter screen.

[0007] As one possible implementation, the first filter and the second filter are anti-detached in the direction of extension of the axis.

[0008] As an alternative implementation, a magnetic levitation support unit is also included for levitizing the second filter along the axis and engaging with the first filter.

[0009] As one possible implementation, the magnetic levitation support unit includes a first magnet and a second magnet;

[0010] The first magnet is connected to the first filter screen, and the second magnet is connected to the second filter screen;

[0011] In the direction of the extension of the axis, the first magnet and the second magnet are positioned opposite each other, and the magnetism of the opposite ends of the first magnet and the second magnet is the same.

[0012] As an implementation method, one of the first filter screen and the second filter screen is provided with a groove, and the other is provided with a sliding part, wherein the sliding part slides in cooperation with the groove along the extension direction of the axis.

[0013] Of the first magnet and the second magnet, one is disposed in the groove, and the other is disposed at the end of the sliding part located in the groove.

[0014] As one possible implementation, the first filter screen includes a tubular filter screen body, and the second filter screen includes a cylindrical filter screen body;

[0015] One end of the tubular filter body serves as the sliding part;

[0016] The groove is provided on the outside of the opening side of the cylindrical filter body, and the groove opening is positioned facing the bottom of the cylindrical filter body.

[0017] As an implementation, the slot is provided with a first protrusion extending radially along the first filter screen, and the sliding part is provided with a second protrusion extending radially, the second protrusion being located between the first protrusion and the bottom of the slot, and in an orthographic projection perpendicular to the axis, the first protrusion and the second protrusion at least partially overlap.

[0018] As an implementation method, the slide is an annular groove surrounding the opening, the second magnet is a second annular magnet, and the second annular magnet is fixed in the annular groove and coaxially arranged with the annular groove.

[0019] The first magnet is a first ring magnet, which is fixed to one end of the tubular filter body.

[0020] As an alternative implementation, a third magnet is also included, which, along with the second magnet, is positioned at both ends of the tubular filter body.

[0021] In a second aspect, the present invention provides a drainer, including a drainer housing and the aforementioned filter screen, wherein the filter screen is located inside the drainer housing;

[0022] It also includes an alternating magnetic field generator for providing an alternating magnetic field to the third magnet to drive the first filter screen to reciprocate along the axis.

[0023] As one possible implementation, the alternating magnetic field generator is disposed on the outer side of the bottom of the drain housing; and / or,

[0024] The alternating magnetic field generator is positioned directly opposite the third magnet; and / or

[0025] The drainer housing is fitted with a magnetic ring, which, in a projection perpendicular to the radial direction, at least partially overlaps with the first magnet and the second magnet, respectively.

[0026] Thirdly, the present invention provides a water tank, including a tank body, wherein a drain outlet is provided at the bottom of the tank body, and the drain outlet is connected to the aforementioned drain device.

[0027] As an alternative implementation, the water tank also includes a position detection sensor, a control device, and an electric water injection valve;

[0028] The position detection sensor is used to detect the position of the first filter screen inside the drainer housing;

[0029] The control device is used to determine whether to open the electric water injection valve to inject water into the tank according to the position of the first filter screen in the drainer housing; and / or whether to control the alternating magnetic field generator to generate an alternating magnetic field so that the first filter screen and the second filter screen reciprocate along the axis.

[0030] Fourthly, the present invention provides a water tank anti-clogging control method, applied to the aforementioned water tank, comprising the following steps:

[0031] Determine the position of the first filter screen within the drainer housing;

[0032] Based on the position of the first filter screen within the drainer housing, determine whether to open the electric water injection valve to inject water into the tank; and / or whether to control the alternating magnetic field generator to generate an alternating magnetic field so that the first filter screen and the second filter screen reciprocate along the axis.

[0033] As an implementation method, determining whether to open the electric water injection valve to inject water into the tank based on the position of the first filter screen within the drainer housing; and / or whether to control the alternating magnetic field generator to generate an alternating magnetic field to cause the first filter screen and the second filter screen to reciprocate along the axis, specifically:

[0034] The position of the first filter screen within the drain housing includes the amount of downward displacement of the first filter screen relative to an initial position, which represents the position of the first filter screen when there is no residue inside the filter screen;

[0035] If S1 < S < S2, and the first predetermined duration is maintained, the electric water injection valve is opened to inject water into the tank, and the alternating magnetic field generator is controlled to generate an alternating magnetic field so that the first filter screen and the second filter screen reciprocate along the axis; until the water injection reaches the second predetermined duration, the electric water injection valve and the alternating magnetic field generator are closed.

[0036] If S > S2, the alternating magnetic field generator is controlled to generate an alternating magnetic field so that the first filter and the second filter reciprocate along the axis; after the alternating magnetic field generator has been working for a third predetermined time, the electric water injection valve is opened to inject water into the tank; until the water injection reaches a fourth predetermined time, the electric water injection valve and the alternating magnetic field generator are closed.

[0037] Wherein, S1 is the first position threshold, S is the downward displacement amount, and S2 is the second position threshold.

[0038] The above solution, by incorporating a first filter and a second filter, and by allowing the first and second filters to reciprocate along the axis, allows for the removal of residue from the second filter by controlling the frequency of their reciprocating motion along the axis when cleaning is required. Furthermore, the relative reciprocating motion of the first and second filters effectively performs a cutting motion, causing the residue shaken from the second filter towards the first filter to be cut by the mesh of the first filter, thus reducing its size and preventing blockage when it enters the drainpipe with the water flow.

[0039] In summary, by adopting the above-described solution of this application, the residue inside the filter screen can be cleaned directly by the reciprocating motion of the first and second filter screens along the axis without the need for manual emptying. This prevents the residue from accumulating inside the filter screen and causing blockage, and also eliminates the psychological burden on the user by eliminating the need to clean the filter screen by hand. Attached Figure Description

[0040] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0041] Figure 1 is a front view of the filter provided in an embodiment of the present invention;

[0042] Figure 2 is a top view of Figure 1;

[0043] Figure 3 is a bottom view of Figure 1;

[0044] Figure 4 is a cross-sectional view along line A-A of Figure 2;

[0045] Figure 5 is an exploded view of Figure 1 from a three-dimensional perspective;

[0046] Figure 6 is a magnified view of part B in Figure 4;

[0047] Figure 7 is a partial enlarged view of part B in Figure 4 in another embodiment;

[0048] Figure 8 is a partial enlarged view of part B in Figure 4 in another embodiment;

[0049] Figure 9 is a front view of the drain provided in an embodiment of the present invention;

[0050] Figure 10 is a C-C sectional view of Figure 9;

[0051] Figure 11 is a three-dimensional view of Figure 9;

[0052] Figure 12 is an exploded view of Figure 11;

[0053] Figure 13 is a perspective view of the water tank provided in an embodiment of the present invention;

[0054] Figure 14 is a perspective view of the water tank provided in an embodiment of the present invention from another angle;

[0055] Figure 15 is a D-D sectional view of Figure 14.

[0056] Explanation of reference numerals in the attached figures:

[0057] Filter screen 100, first filter screen 1, first filter hole 101, first protrusion 102, first magnet 103, sliding part 104, third magnet 105, axis 106, second filter screen 2, second filter hole 201, second protrusion 202, slide 203, second magnet 204, handle 205, outer side wall 206, inner side wall 207, drainer 3, drainer housing 301, alternating magnetic field generator 302, elastic claw 303, position detection sensor 304, cover 305, magnetic ring 306, water tank 4, tank body 401, switch 402, faucet 403, valve 404, electric water injection valve 405, control device 406, drain pipe 407, water passages 408, 409, 410. Detailed Implementation

[0058] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0059] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] Referring at least to Figures 1-6, an example of the present invention provides a filter 100, comprising:

[0061] First filter 1;

[0062] For example, but not limited to, the first filter 1 may include a tubular body or a cylindrical body; wherein, in the example shown in Figure 1, the first filter 1 includes a tubular body, that is, the first filter 1 is generally tubular, and its tube wall is provided with a plurality of filter holes. The shape and size of the filter holes provided on the tube wall of the tubular body can be more than one type. For example, in this example, the filter holes on the tube wall of the tubular body may include round holes and elongated holes, and the elongated holes serve as the first filter hole 101 described below. Generally, the width of the elongated hole as the first filter hole 101 and the diameter of the round hole can be less than 4 mm to prevent excessively large residues from leaking out of the filter and entering the drain pipe 407, causing blockage of the drain pipe 407. Of course, the figures here are only for illustrative purposes, and the width of the elongated hole and the diameter of the round hole can be other sizes according to actual needs.

[0063] In this example, the first filter 1 is made of stainless steel. Of course, other materials, such as plastic, can be used in other examples.

[0064] The second filter 2 is at least partially located within the first filter 1 and is reciprocating along the axis 106 of the first filter 1.

[0065] For example, but not limited to, the second filter screen 2 includes a cylindrical body, which includes a cylindrical sidewall and a bottom wall located at one end of the sidewall; multiple filter holes are respectively provided on the sidewall and the bottom wall, and the shape and size of the filter holes in the second filter screen 2 can be more than one type. For example, in this example, the filter holes of the second filter screen 2 can include round holes and elongated holes, with the elongated holes serving as the second filter hole 201 described below. In this example, the diameter of the round holes and the width of the elongated holes provided on the sidewall of the second filter screen 2 are larger than the diameter of the round holes and the width of the elongated holes provided on the bottom wall, to prevent excessively large residues from leaking out from the bottom wall and entering the drain pipe 407, causing blockage of the drain pipe 407. In this example, the diameter of the round holes and the width of the elongated holes provided on the sidewall of the second filter screen 2 can be less than 4.5 mm, and the diameter of the round holes and the width of the elongated holes provided on the bottom wall can be less than 3.5 mm.

[0066] The above solution, by setting up a first filter screen 1 and a second filter screen 2, and by allowing the first filter screen 1 and the second filter screen 2 to reciprocate along the axis 106, allows the frequency of the reciprocating motion of the first filter screen 1 and the second filter screen 2 along the axis 106 to be controlled when the residue inside the filter screen needs to be cleaned. This allows the residue inside the second filter screen 2 to be shaken out, thus cleaning it. In addition, during the relative reciprocating motion of the first filter screen 1 and the second filter screen 2, they are equivalent to performing a cutting motion. The residue shaken from the second filter screen 2 towards the first filter screen 1 is cut by the mesh of the first filter screen 1, making the residue smaller. When it enters the drain pipe 407 with the water flow, it will not cause blockage of the drain pipe 407.

[0067] In summary, by adopting the above-described solution of this application, the residue in the filter screen can be cleaned directly by the reciprocating motion of the first filter screen 1 and the second filter screen 2 along the axis 106 without the need for manual emptying. This can prevent the residue from accumulating in the filter screen and causing blockage, and also eliminates the psychological burden on the user by eliminating the need to clean the filter screen by hand.

[0068] As an implementation method, the first filter 1 and the second filter 2 are locked in a non-detachable engagement in the extension direction of the axis 106. This non-detachable engagement means that the first filter 1 and the second filter 2 can undergo relative translational movement in the extension direction of the axis 106, but they cannot separate in the extension direction of the axis 106.

[0069] To facilitate handling the filter, a handle 205 can be attached to the bottom of the second filter 2. The handle 205 can be a columnar structure.

[0070] Specifically, as shown in Figure 6, the first filter 1 and the second filter 2 can achieve a non-disengaging fit in the extension direction of the axis 106 through the mutual cooperation of the first protrusion 102 and the second protrusion 202.

[0071] In the example shown in Figure 6, the groove of the slide 203 is provided with a second protrusion 202 extending radially along the first filter screen 1. In this example, the second protrusion 202 is provided on the outer wall 206 of the slide 203 and extends radially toward the inner wall 207 of the first filter screen 1. The sliding part 104 is provided with a first protrusion 102 extending radially along the first filter screen 1. In this example, the first protrusion 102 extends radially toward the outer wall 206 of the slide 203. The first protrusion 102 is located between the second protrusion 202 and the... Between the bottom of the groove 203, and in the orthographic projection perpendicular to the axis 106, the second protrusion 202 at least partially overlaps with the first protrusion 102. By setting the first protrusion 102 and the second protrusion 202 to at least partially overlap in the orthographic projection perpendicular to the axis 106, the second protrusion 202 can stop the first protrusion 102 to restrict the end of the first filter screen 1 from coming out of the groove 203 of the second filter screen 2, so as to achieve the anti-disengagement engagement of the first filter screen 1 and the second filter screen 2 in the extension direction of the axis 106.

[0072] In the example of Figure 7, the groove of the slide 203 is provided with a second protrusion 202 extending radially along the first filter screen 1. In this example, the second protrusion 202 is provided on the inner wall 207 of the slide 203 and extends radially towards the outer wall 206 of the first filter screen 1. The sliding part 104 is provided with a first protrusion 102 extending radially along the first filter screen 1. In this example, the first protrusion 102 extends radially towards the inner wall 207 of the slide 203. The first protrusion 102 is located between the second protrusion 202 and the slide 203. Between the bottom of the groove 203, and in the orthographic projection perpendicular to the axis 106, the first protrusion 102 and the second protrusion 202 at least partially overlap. By setting the first protrusion 102 and the second protrusion 202 to at least partially overlap in the orthographic projection perpendicular to the axis 106, the second protrusion 202 can stop the first protrusion 102 to restrict the end of the first filter screen 1 from coming out of the groove 203 of the second filter screen 2, so as to achieve the anti-disengagement engagement of the first filter screen 1 and the second filter screen 2 in the extension direction of the axis 106.

[0073] In the example of Figure 8, the groove of the slide 203 is provided with a second protrusion 202 extending radially along the first filter screen 1. In this example, the inner wall 207 and the outer wall 206 of the slide 203 are respectively provided with second protrusions 202. Along the radial direction of the first filter screen 1, the second protrusion 202 on the inner wall 207 extends toward the second protrusion 202 on the outer wall 206, and the second protrusion 202 on the outer wall 206 extends toward the second protrusion 202 on the inner wall 207. The left and right sides of the sliding portion 104 are respectively provided with first protrusions 102 extending radially. The first protrusion 102 is located between the second protrusion 202 and the bottom of the groove 203. In a projection perpendicular to the axis 106, the first protrusion 102 and the second protrusion 202 at least partially overlap. By setting the first protrusion 102 and the second protrusion 202 to at least partially overlap in a projection perpendicular to the axis 106, the second protrusion 202 can stop the first protrusion 102, thus preventing the end of the first filter screen 1 from dislodging from the groove 203 of the second filter screen 2. This achieves a preventive engagement between the first filter screen 1 and the second filter screen 2 in the extending direction of the axis 106.

[0074] As an alternative implementation, a magnetic levitation support unit is also included, used to levitate the second filter 2 along the axis 106, in conjunction with the first filter 1. By providing the magnetic levitation support unit, the second filter 2 can move following the movement of the first filter 1, and due to the inertia of the second filter 2, the amount of movement (movement) of the second filter 2 can be greater than the amount of movement of the first filter 1, allowing them to undergo relative translation.

[0075] As one possible implementation, the magnetic levitation support unit includes a first magnet 103 and a second magnet 204. The first magnet 103 and the second magnet 204 may be, for example but not limited to, neodymium iron boron magnets, to enhance the magnetic force used for magnetic levitation support.

[0076] The first magnet 103 is connected to the first filter screen 1, for example, by means of adhesive or screw connection. The second magnet 204 is connected to the second filter screen 2, for example, by means of adhesive or screw connection. In the extension direction of the axis 106, the first magnet 103 and the second magnet 204 are arranged facing each other, and the magnetism of the opposite ends of the first magnet 103 and the second magnet 204 is the same.

[0077] For example, if the lower end of the second magnet 204 is the N pole, then the upper end of the first magnet 103 is the N pole; or, if the lower end of the second magnet 204 is the S pole, then the upper end of the first magnet 103 is the S pole; so that the first magnet 103 and the second magnet 204 repel each other, so that the second filter screen 2 is suspended relative to the first filter screen 1.

[0078] As an implementation method, one of the first filter screen 1 and the second filter screen 2 is provided with a groove 203, and the other is provided with a sliding part 104. The sliding part 104 slides and engages with the groove 203 along the extension direction of the axis 106. Through the sliding groove 203 and the sliding part 104 that slide and engage with each other, the movement of the first filter screen 1 and the second filter screen 2 can be constrained, so that the first filter screen 1 and the second filter screen 2 can reciprocate along the axis 106 of the first filter screen 1.

[0079] Of the first magnet 103 and the second magnet 204, one is disposed in the groove 203 and the other is disposed at the end of the sliding part 104 located in the groove 203, so that there is no obstruction between the first magnet 103 and the second magnet 204, and the repulsive force between the first magnet 103 and the second magnet 204 will not be reduced due to the obstruction of the magnetic field.

[0080] In one possible implementation, the first filter 1 includes a tubular filter body, and the second filter 2 includes a cylindrical filter body; one end of the tubular filter body serves as the sliding part 104; the groove 203 is provided on the outside of the opening side of the cylindrical filter body, and the groove opening of the groove 203 is provided facing the bottom of the cylindrical filter body.

[0081] As an implementation, the groove 203 is an annular groove surrounding the opening, the second magnet 204 is a second annular magnet, the second annular magnet is fixed in the annular groove and coaxially arranged with the annular groove; the first magnet 103 is a first annular magnet, the first annular magnet is fixed to one end of the tubular filter body, in this example, the first annular magnet is fixed to the upper end of the tubular filter body.

[0082] As an alternative implementation, a third magnet 105 is also included, which, along with the second magnet 204, is positioned at both ends of the tubular filter body. In this example, the third magnet 105 may be a third annular magnet, which is fixed to the lower end of the tubular filter body.

[0083] Secondly, as shown in at least Figures 9-12, the present invention provides a drainer 3, including a drainer housing 301 and the aforementioned filter screen 100, wherein the filter screen 100 is located inside the drainer housing 301;

[0084] It also includes an alternating magnetic field generator 302 for providing an alternating magnetic field to the third magnet 105 to drive the first filter screen 1 to reciprocate along the axis 106.

[0085] When the drainer 3 is in operation, for example, the following movements may occur:

[0086] When the alternating magnetic field generator 302 is energized, it generates a magnetic field. Initially, the magnetic poles at the upper end of the alternating magnetic field generator 302 are opposite to the magnetic poles at the lower end of the third magnet 105. Of course, in other examples, the magnetic poles at the upper end of the alternating magnetic field generator 302 and the magnetic poles at the lower end of the third magnet 105 may be the same. Whether the magnetic poles at the upper end of the alternating magnetic field generator 302 and the magnetic poles at the lower end of the third magnet 105 are the same determines the direction of movement of the first filter 1. In this example, since the magnetic poles at the upper end of the alternating magnetic field generator 302 are opposite to those at the lower end of the third magnet 105 when the power is applied, opposite magnetic poles attract each other. At this time, the first filter 1 moves downward. In addition, since the first filter 1 and the second filter 2 are locked together by the first protrusion 102 and the second protrusion 202, the second filter 2 moves downward simultaneously as the first filter 1 moves downward. After the first filter 1 descends a certain distance, the direction of the current flowing into the alternating magnetic field generator 302 is changed, causing the magnetic poles it generates to change direction. Thus, the upper end of the alternating magnetic field generator 302 forms the same magnetic pole as the lower end of the third magnet 105. Under the repulsive action of the same magnetic poles, the first filter 1 changes to move upward, while the second filter 2 continues to move downward under the action of inertia. At this time, the relative up-and-down movement of the first filter 1 and the second filter 2 is ensured. Furthermore, since the opposing ends of the first magnet 103 and the second magnet 204 have the same magnetism, if the lower end of the second magnet 204 is the N pole and the upper end of the first magnet 103 is the N pole, then after the second filter 2 continues to move downwards a certain distance, under the repulsive force between the first magnet 103 and the second magnet 204, the second magnet 204 also changes to move upwards. After the first filter 1 moves upwards a certain distance, the magnetic poles of the alternating magnetic field generator 302 reverse again. At this time, the magnetic pole at the upper end of the alternating magnetic field generator 302 is opposite to the magnetic pole at the lower end of the third magnet 105, which then drives the first filter 1 to move upwards again. As filter 1 moves downwards, the second filter 2 continues to move upwards due to inertia. Thus, filter 1 and filter 2 maintain relative up-and-down movement. When the first protrusion 102 contacts the second protrusion 202, filter 2 begins to move downwards along with filter 1. The direction of the magnetic poles of the alternating magnetic field generator 302 is changed sequentially and regularly at a predetermined frequency, causing filter 1 and filter 2 to continuously perform intermittent up-and-down relative movement to clean the residue inside the filter. Larger particles of residue can also be cut through the up-and-down relative movement of filter 1 and filter 2.

[0087] As an implementation method, the alternating magnetic field generator 302 is disposed on the outer side of the bottom of the drain housing 301. This structure facilitates the installation of the alternating magnetic field generator 302 and avoids problems such as short circuits caused by water in the water tank.

[0088] In this example, the alternating magnetic field generator 302 is snapped onto the outside of the bottom of the drain housing 301 by the elastic claw 303; of course, in other examples, the alternating magnetic field generator 302 can also be fixedly connected to the outside of the bottom of the drain housing 301 by means of adhesive or other methods.

[0089] As an implementation method, the alternating magnetic field generator 302 is arranged opposite to the third magnet 105, so that the magnetic field generated by the alternating magnetic field generator 302 can act on the third magnet 105 to the maximum extent, thereby driving the first filter 1 to move upward or downward.

[0090] As one possible implementation, the alternating magnetic field generator 302 includes an electromagnet.

[0091] As an implementation, the drain housing 301 is fitted with a magnetic ring 306, which, in an orthographic projection perpendicular to the radial direction, at least partially overlaps with the first magnet 103 and the second magnet 204, respectively.

[0092] By fitting a magnetic ring 306 onto the outside of the drain housing 301, and having the magnetic ring 306 overlap with the first magnet 103 and the second magnet 204 in the orthographic projection perpendicular to the radial direction of the first filter screen 1, the magnetic force of the magnetic ring 306 can act on the first magnet 103 and the second magnet 204 respectively in the circumferential direction, so that the first filter screen 1 and the second filter screen 2 can automatically align during the up and down movement, preventing them from shifting.

[0093] Thirdly, as shown at least in Figures 13-15, the present invention provides a water tank 4, including a tank body 401, the bottom of which is provided with a drain outlet, and the drain outlet is connected to the aforementioned drainer 3.

[0094] When water needs to be stored in the tank 401, a cover 305 can be placed on the drain outlet.

[0095] As an alternative implementation, the water tank also includes a position detection sensor 304, a control device 406, and an electric water injection valve 405.

[0096] The position detection sensor 304 is used to detect the position of the first filter screen 1 inside the drain housing 301;

[0097] The position detection sensor 304 is, for example but not limited to, a Hall sensor, which is disposed on the drain housing 301 and determines the position of the first filter 1 within the drain housing 301 by at least sensing the magnitude of the magnetic force of the third magnet 105.

[0098] For example, in the initial position (when there is no residue in the filter screen 100), the Hall sensor is located on the side of the third magnet 105. The amount of downward movement of the first filter screen 1 in the drainer housing 301 can be determined according to the magnitude of the magnetic force detected by the Hall sensor. The greater the change in magnetic force detected by the Hall sensor, the greater the amount of downward movement of the first filter screen 1 in the drainer housing 301.

[0099] The control device 406 is used to determine whether to open the electric water injection valve 405 to inject water into the tank 401 based on the position of the first filter screen 1 in the drain housing 301; and / or whether to control the alternating magnetic field generator 302 to generate an alternating magnetic field so that the first filter screen 1 and the second filter screen 2 reciprocate along the axis 106.

[0100] For example, when the Hall sensor detects that the downward movement of the first filter screen 1 satisfies the following formula, S1 < S < S2, and maintains this position for a first predetermined duration, it indicates that there is residue in the filter screen at this time, and cleaning can be performed. During the cleaning operation, the electric water injection valve 405 is opened to inject water into the tank 401, so that the filter screen can be rinsed. The alternating magnetic field generator 302 is controlled to generate an alternating magnetic field, so that the first filter screen 1 and the second filter screen 2 reciprocate along the axis 106. During the reciprocating motion of the first filter screen 1 and the second filter screen 2, the residue is washed away with the water flow. Until the water injection reaches the second predetermined duration, the electric water injection valve 405 and the alternating magnetic field generator 302 are closed.

[0101] The first predetermined duration, the second predetermined duration, the first position threshold, the second position threshold, and the third and fourth predetermined durations described below can be determined according to the actual situation, and are not limited to uniqueness here.

[0102] For example, when the Hall sensor detects that the downward displacement of the first filter 1 satisfies the following formula, S > S2, it indicates that the filter has become clogged. When clogging occurs, the alternating magnetic field generator 302 is first controlled to generate an alternating magnetic field so that the first filter 1 and the second filter 2 reciprocate along the axis 106. After the alternating magnetic field generator 302 has been operating for a third predetermined time, the electric water injection valve 405 is opened to inject water into the tank 401. Until the water injection reaches a fourth predetermined time, the electric water injection valve 405 and the alternating magnetic field generator 302 are closed.

[0103] In the initial stage of cleaning when the filter screen becomes clogged, only the first filter screen 1 and the second filter screen 2 are controlled to reciprocate along the axis 106 to perform preliminary unblocking of the filter screen. After preliminary unblocking, water is injected into the tank 401 so that the residue enters the drain pipe 407 with the water flow.

[0104] Wherein, S1 is the first position threshold, S is the downward displacement amount, and S2 is the second position threshold.

[0105] In addition to cleaning the filter screen through the above-mentioned automatic control method, it can also be controlled manually. In this case, a switch 402 needs to be installed on the tank 401. The alternating magnetic field generator 302 is turned on by manually turning on the switch 402 to make the first filter screen 1 and the second filter screen 2 reciprocate along the axis 106, and / or the electric water injection valve 405 injects water into the tank 401.

[0106] In this example, the faucet 403 installed on the tank 401 has three water paths: one water path 408 for hot water, one water path 409 for cold water, and another water path 410 for connecting to the electric water injection valve 405. The hot water path and the cold water path are controlled by the valve of the faucet, while the water path connected to the electric water injection valve 405 does not pass through the valve 404 of the faucet 403. Whether water flows out is controlled solely by the electric water injection valve 405, so as to avoid the problem that the electric water injection valve 405 cannot inject water into the tank 401 if the valve 404 of the faucet 403 is closed.

[0107] Fourthly, the present invention provides a water tank anti-clogging control method, applied to the aforementioned water tank 4, comprising the following steps:

[0108] Determine the position of the first filter screen 1 within the drain housing 301;

[0109] Based on the position of the first filter screen 1 within the drain housing 301, determine whether to open the electric water injection valve 405 to inject water into the tank 401; and / or whether to control the alternating magnetic field generator 302 to generate an alternating magnetic field so that the first filter screen 1 and the second filter screen 2 reciprocate along the axis 106.

[0110] As an implementation method, determining whether to open the electric water injection valve 405 to inject water into the tank 401 based on the position of the first filter screen 1 within the drain housing 301; and / or whether to control the alternating magnetic field generator 302 to generate an alternating magnetic field so that the first filter screen 1 and the second filter screen 2 reciprocate along the axis 106, specifically:

[0111] The position of the first filter screen 1 within the drain housing 301 includes the amount of downward displacement of the first filter screen 1 relative to an initial position, wherein the initial position represents the position of the first filter screen 1 when there is no residue inside the filter screen;

[0112] If S1 < S < S2, and this is maintained for a first predetermined duration, the electric water injection valve 405 is opened to inject water into the tank 401, and the alternating magnetic field generator 302 is controlled to generate an alternating magnetic field so that the first filter screen 1 and the second filter screen 2 reciprocate along the axis 106; until the water injection reaches the second predetermined duration, the electric water injection valve 405 and the alternating magnetic field generator 302 are closed.

[0113] If S > S2, the alternating magnetic field generator 302 is controlled to generate an alternating magnetic field, so that the first filter screen 1 and the second filter screen 2 reciprocate along the axis 106; after the alternating magnetic field generator 302 has been operating for a third predetermined time, the electric water injection valve 405 is opened to inject water into the tank 401; until the water injection reaches a fourth predetermined time, the electric water injection valve 405 and the alternating magnetic field generator 302 are closed;

[0114] Wherein, S1 is the first position threshold, S is the downward displacement amount, and S2 is the second position threshold.

[0115] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0116] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A drainer, characterized in that, The device includes a drain housing (301), a filter screen, and an alternating magnetic field generator (302), the filter screen being located within the drain housing (301); the filter screen includes a first filter screen (1), a second filter screen (2), a first magnet (103), a second magnet (204), and a third magnet (105), the second filter screen (2) being at least partially located within the first filter screen (1) and reciprocating along the axis (106) of the first filter screen (1); the first magnet (103) is connected to the first filter screen (1), and the second magnet (204) is connected to the second filter screen (2); in the extending direction of the axis (106), the first magnet (103) and the second magnet (204) are connected to the first filter screen (105). The second magnet (204) is positioned opposite each other, and the magnetism of the opposite ends of the first magnet (103) and the second magnet (204) is the same; of the first filter screen (1) and the second filter screen (2), one is provided with a groove (203), and the other is provided with a sliding part (104), the sliding part (104) slidingly engaging with the groove (203) along the extension direction of the axis (106); of the first magnet (103) and the second magnet (204), one is disposed in the groove (203), and the other is disposed at the end of the sliding part (104) located in the groove (203); the first filter screen (1) includes a tubular filter screen body, the second The filter screen (2) includes a cylindrical filter screen body; one end of the cylindrical filter screen body serves as the sliding part (104); the groove (203) is provided on the outside of the opening side of the cylindrical filter screen body, and the groove opening of the groove (203) faces the bottom of the cylindrical filter screen body; the groove opening of the groove (203) is provided with a first protrusion (102) extending radially along the first filter screen (1), and the sliding part (104) is provided with a second protrusion (202) extending radially, the second protrusion (202) being located between the first protrusion (102) and the bottom of the groove (203), and, in the orthographic projection perpendicular to the axis (106), the first protrusion (102) The first magnet (103) is an annular groove surrounding the opening, and the second magnet (204) is a second annular magnet, which is fixed in the annular groove and coaxially arranged with the annular groove; the first magnet (103) is a first annular magnet, which is fixed to one end of the first filter screen (1); the third magnet (105) and the second magnet (204) are respectively placed at both ends of the tubular filter screen body; the alternating magnetic field generator (302) is used to provide an alternating magnetic field to the third magnet (105) to drive the first filter screen (1) to reciprocate along the axis (106).

2. The drainer according to claim 1, characterized in that, The alternating magnetic field generator (302) is disposed on the outer side of the bottom of the drain housing (301); and / or, the alternating magnetic field generator (302) is disposed opposite to the third magnet (105); and / or, the drain housing (301) is fitted with a magnetic ring (306), which, in a radially perpendicular orthogonal projection, at least partially overlaps with the first magnet (103) and the second magnet (204).

3. A water tank, characterized in that, It includes a tank (401), the bottom of which is provided with a drain outlet, and the drain outlet is connected to a drainer according to any one of claims 1-2.

4. The water tank according to claim 3, characterized in that, It also includes a position detection sensor (304), a control device (406), and an electric water injection valve (405); the position detection sensor (304) is used to detect the position of the first filter screen (1) in the drainer housing (301); the control device (406) is used to determine whether to open the electric water injection valve (405) to inject water into the tank (401) based on the position of the first filter screen (1) in the drainer housing (301); and / or whether to control the alternating magnetic field generator (302) to generate an alternating magnetic field so that the first filter screen (1) and the second filter screen (2) reciprocate along the axis (106).

5. A method for preventing blockage in a water tank, applied to the water tank described in claim 4, characterized in that, Includes the following steps: Obtain the position of the first filter screen (1) inside the drain housing (301); based on the position of the first filter screen (1) inside the drain housing (301), determine whether to open the electric water injection valve (405) to inject water into the tank (401); and / or, whether to control the alternating magnetic field generator (302) to generate an alternating magnetic field so that the first filter screen (1) and the second filter screen (2) reciprocate along the axis (106).

6. The water tank anti-clogging control method according to claim 5, characterized in that, Determine whether to open the electric water injection valve (405) to inject water into the tank body (401) according to the position of the first filter screen (1) in the drainer housing (301); and / or whether to control the alternating magnetic field generator (302) to generate an alternating magnetic field so that the first filter screen (1) and the second filter screen (2) reciprocate along the axis (106). Specifically: The position of the first filter screen (1) in the drainer housing (301) includes the downward displacement of the first filter screen (1) relative to the initial position, and the initial position represents the position of the first filter screen (1) when there is no residue in the filter screen. If S1 < S < S2 and it maintains for a first predetermined time, then open the electric water injection valve (405) to inject water into the tank body (401), and control the alternating magnetic field generator (302) to generate an alternating magnetic field so that the first filter screen (1) and the second filter screen (2) reciprocate along the axis (106); until the water injection reaches a second predetermined time, then close the electric water injection valve (405) and the alternating magnetic field generator (302); if S > S2, then control the alternating magnetic field generator (302) to generate an alternating magnetic field so that the first filter screen (1) and the second filter screen (2) reciprocate along the axis (106); after the alternating magnetic field generator (302) works for a third predetermined time, open the electric water injection valve (405) to inject water into the tank body (401); until the water injection reaches a fourth predetermined time, then close the electric water injection valve (405) and the alternating magnetic field generator (302); where S1 is the first position threshold, S is the downward displacement, and S2 is the second position threshold.

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