Flow channel, clothes processing equipment and control method

Abstract

The invention provides a flow channel, clothes processing equipment and a control method, a first filter screen is arranged in the flow channel, and two rod pieces arranged at an interval are arranged on the first filter screen; each rod piece is fixed relative to the first filter screen, and the two rod pieces can move relative to each other; when the quantity of fluid impurities is small or the requirement for the flow speed is high, the first filter screen integrally forms a single-layer filter structure by controlling the relative movement of the two rod pieces; the single-layer filtering structure filters the flowing fluid once, so that the flow resistance is minimized, and the flow speed of the fluid is obviously increased; when deep filtration is needed, the first filter screen integrally forms a multi-layer filter structure by controlling the relative movement of the two rod pieces; the multi-layer filtering structure filters flowing fluid at least twice, impurities are intercepted repeatedly, and the filtering effect is greatly enhanced; the effect that multiple filter screens are connected in series can be achieved only through a single filter screen, the situation that a traditional multi-layer filter screen bears unnecessary flowing resistance under the low-impurity working condition is avoided, and system energy consumption is remarkably reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of fluid filtration, and in particular relates to a flow channel, clothing processing equipment and a control method. Background Art

[0002] Existing fluid equipment usually sets a filter screen in the flow channel to remove impurities in the fluid. In order to improve the filtering effect, a common method is to fixedly set a multi-layer filter screen in the flow channel, so that the fluid passes through each layer of filter screen in turn and is filtered multiple times. However, although this fixed multi-layer structure improves the filtering effect, it also significantly increases the resistance to fluid flow, resulting in a decrease in fluid flow rate and an increase in system energy consumption. Especially when the fluid impurity load is low or the flow rate requirement is high, the resistance loss caused by this fixed multi-layer filter structure appears unnecessary and inefficient. Therefore, there is an urgent need for a flow channel filter structure that can flexibly adjust the filter level according to actual working conditions, so as to minimize the fluid flow resistance and maintain a higher flow rate while ensuring the necessary filtering effect, thereby achieving an optimized balance between filtering effect and fluid circulation efficiency. Summary of the Invention

[0003] In view of this, the present invention provides a flow channel, a clothing processing device and a control method to solve the problem in the prior art that the filtering structure cannot flexibly adjust the filtering level according to the actual working conditions to take into account the filtering effect and fluid flow rate.

[0004] The present invention provides a flow channel, wherein a first filter screen is provided in the flow channel, and two rods are provided on the first filter screen, and the two rods are spaced apart;

[0005] Each of the rods is fixed relative to the first filter screen, and the two rods are movable relative to each other;

[0006] The first filter screen is configured such that by controlling the relative movement of the two rods, the first filter screen as a whole can form a single-layer filter structure or a multi-layer filter structure; the single-layer filter structure filters the fluid flowing through once, and the multi-layer filter structure filters the fluid flowing through at least twice.

[0007] Further optionally, the first filter screen is configured such that: when the two rods are moved away from each other and the first filter screen is in an expanded state, the first filter screen as a whole forms the single-layer filter structure; the single-layer filter structure covers the cross section of the flow channel once, or the single-layer filter structure does not cover the cross section of the flow channel and is located between the inlet and outlet of the flow channel;

[0008] When the two rods are close to each other and the first filter screen is in a stacked state, the first filter screen as a whole forms the multi-layer filter structure; the multi-layer filter structure covers the cross section of the flow channel at least twice.

[0009] Further optionally, the multi-layer filtering structure is a U-shaped filtering structure or a wave-shaped filtering structure.

[0010] Further optionally, the rod is slidably arranged on the side wall of the flow channel along the extension direction of the flow channel;

[0011] The first filter screen is configured such that the two rods slide relative to each other, and the first filter screen can be switched between the single-layer filter structure and the multi-layer filter structure.

[0012] Further optionally, the side wall of the flow channel includes two first flow channel walls arranged opposite to each other in a first direction and two second flow channel walls arranged opposite to each other in a second direction; the first filter screen includes a head end and a tail end in its length direction, and the rod is slidably arranged on the two second flow channel walls;

[0013] The flow channel includes a first end wall and a second end wall arranged opposite to each other in the extending direction of the flow channel, the first end wall is formed with the inlet, and one of the two first flow channel walls is formed with the outlet at one end close to the second end wall;

[0014] The first filter screen is configured such that: when the first filter screen as a whole forms the single-layer filter structure, the head end and the tail end abut against the first end wall and the second end wall respectively, or the head end and the tail end abut against two first flow channel walls respectively;

[0015] The first direction is one of a length direction and a width direction of a cross section of the flow channel, and the second direction is the other of a length direction and a width direction of a cross section of the flow channel.

[0016] Further optionally, the multi-layer filtration structure includes a plurality of stacked filtration segments; the first filter mesh is configured such that when the first filter mesh as a whole forms the multi-layer filtration structure, the head end, the tail end and the connection between two adjacent filtration segments all abut against the first flow channel wall.

[0017] Further optionally, the first filter screen is configured such that: when the multi-layer filter structure is a U-shaped filter structure, the head end and the tail end both abut against one of the two first flow channel walls, and the connection between two adjacent filter segments abuts against the other of the two first flow channel walls;

[0018] When the multi-layer filtering structure is a wave-shaped filtering structure, the head end, the connection between two adjacent filtering segments, and the tail end alternately abut against one of the two first flow channel walls.

[0019] Further optionally, the first filter screen is configured to adjust the distance between the two rods in the length direction of the first filter screen according to the distance between the two first flow channel walls, so that the first filter screen as a whole forms the single-layer filtering structure or the U-shaped filtering structure or the wave-shaped filtering structure with different periods;

[0020] The wave-shaped filtering structures with different periods include at least a wave-shaped filtering structure with one period, a wave-shaped filtering structure with one and a half periods, and a wave-shaped filtering structure with two periods.

[0021] Further optionally, the filtration grades of at least two of the plurality of filtration segments are different, and the filtration grade of the filtration segment located upstream is lower than the filtration grade of the filtration segment located downstream.

[0022] Further optionally, a flow velocity sensor is further provided in the flow channel, and the flow velocity sensor is used to detect the flow velocity of the fluid in the flow channel; the flow velocity sensor includes a first flow velocity sensor and a second flow velocity sensor, and the first flow velocity sensor and the second flow velocity sensor are respectively provided on the windward side and the leeward side of the filtering surface of the first filter screen;

[0023] The first filter is configured to control the relative movement of the two rods to switch the first filter between the single-layer filter structure and the multi-layer filter structure when the difference between the flow rate detected by the first flow rate sensor and the flow rate detected by the second flow rate sensor is greater than a preset value.

[0024] Further optionally, a second filter is provided at the outlet of the flow channel, and the filtering level of the second filter is greater than the filtering level of the first filter.

[0025] The present invention further provides a clothes processing device, comprising a drum; the drum is provided with an air inlet and an air outlet communicating with the interior of the drum, the air inlet and the air outlet being connected via a drying air duct, so that the drying air duct and the drum form a drying circuit, and a drying air flow can circulate in the drying circuit;

[0026] The drying air duct includes an air outlet duct connected to the air outlet, and the air outlet duct is the flow duct described in any one of the above items.

[0027] The present invention also provides a control method for a clothes processing device, wherein the clothes processing device is the clothes processing device described above; when the clothes processing device runs a drying program, the control method includes:

[0028] Determining the material type of the clothing inside the drum;

[0029] According to the material type of the clothes inside the drum, controlling the first filter net as a whole to form a filtering structure corresponding to the material type of the clothes inside the drum;

[0030] Among them, the filtering structure corresponding to the material type of the clothes under the drum includes a single-layer filtering structure and a multi-layer filtering structure.

[0031] Further optionally, controlling the first filter net as a whole to form a filtering structure corresponding to the material type of the clothes inside the drum according to the material type of the clothes inside the drum includes:

[0032] When the material type of the clothes inside the drum is a material type that is not easy to shed lint, the first filter screen is controlled to form a single-layer filtering structure as a whole;

[0033] When the material type of the clothes inside the drum is a material type that easily sheds lint, the first filter screen is controlled to form a multi-layer filter structure as a whole.

[0034] Further optionally, controlling the first filter net as a whole to form a filtering structure corresponding to the material type of the clothes inside the drum according to the material type of the clothes inside the drum includes:

[0035] When the material type of the drum-type underwear includes at least one of silk and chemical fiber, controlling the first filter screen to form a single-layer filtering structure as a whole;

[0036] When the material type of the clothes inside the drum includes at least one of cotton, linen and wool, the first filter net is controlled to form a multi-layer filter structure as a whole.

[0037] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0038] According to the needs of filtration, the relative movement of the two rods can be flexibly controlled so that the first filter screen as a whole forms a corresponding filtration structure, taking into account both the filtration effect and the fluid flow rate;

[0039] When the fluid has few impurities or the flow rate requirement is high, the first filter screen forms a single-layer filter structure. The single-layer filter structure filters the fluid once, minimizing the flow resistance and significantly improving the fluid flow rate. It is suitable for working conditions where the filtration accuracy requirement is not high but the flow rate must be guaranteed.

[0040] When deep filtration is required (e.g., when impurities increase or when high fluid cleanliness is required), the first filter mesh forms a multi-layer filtration structure. The fluid needs to pass through multiple filtration sections in sequence, impurities are repeatedly intercepted, and the filtration effect is greatly enhanced, making it suitable for high-precision filtration scenarios.

[0041] Only a single filter screen is needed to achieve the effect of traditional "multiple independent filter screens in series", avoiding the addition of additional filter screen components, reducing the occupied space, and is suitable for fluid equipment with limited installation space; it avoids the traditional fixed multi-layer filter screen from being subjected to unnecessary flow resistance for a long time under low impurity conditions, and significantly reduces system energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0043] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modification, change in proportion, or adjustment of size, without affecting the efficacy and purpose of the present invention, shall still fall within the scope of the technical contents disclosed in the present invention.

[0044] Figure 1 A schematic structural diagram of a flow channel embodiment provided by the present invention;

[0045] Figure 2 A schematic structural diagram of an embodiment of the present invention in which the first filter screen integrally forms a single-layer filter structure within the flow channel;

[0046] Figure 3 A schematic structural diagram of an embodiment of the present invention in which the first filter screen integrally forms a multi-layer filter structure within the flow channel;

[0047] Figure 4 A schematic structural diagram of an embodiment of the present invention in which a flow velocity sensor is arranged in a flow channel;

[0048] Figure 5 A schematic diagram of the structure of an embodiment of the second filter provided by the present invention when it is at the outlet of the flow channel;

[0049] Figure 6 A schematic structural diagram of an embodiment of a clothes processing device provided by the present invention;

[0050] Figure 7 A schematic flow chart of an embodiment of a control method for a clothes processing device provided by the present invention;

[0051] In the picture:

[0052] 1-first filter; 11-rod; 121-head end; 122-tail end; 13-filter section; 14-connection;

[0053] 2-flow channel; 21-first flow channel wall; 211-export; 22-second flow channel wall; 23-first end wall; 231-inlet; 24-second end wall; 25-first direction; 26-second direction;

[0054] 3- Second filter;

[0055] 41-first flow velocity sensor; 42-second flow velocity sensor;

[0056] 5-Clothing processing equipment; 51-Box; 52-Drum; 53-Drying duct; 531-Air inlet duct; 532-Middle air duct; 533-Air outlet duct; 54-Heating module; 55-Drying fan. DETAILED DESCRIPTION

[0057] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0058] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. "A plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0059] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0060] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0061] To improve filtration efficiency, existing fluid equipment generally installs multiple layers of filter screens in the flow channel, allowing the fluid to pass through the multiple layers of filter screens in sequence and be filtered multiple times. However, the multiple layers of filter screens increase the flow resistance of the fluid, resulting in a decrease in the flow rate of the fluid and an increase in system energy consumption. In other words, the filtration level cannot be flexibly adjusted according to actual needs, and it is impossible to balance filtration efficiency and fluid flow rate.

[0062] The present invention creatively provides a flow channel, wherein a first filter screen is provided in the flow channel, and two spaced-apart rods are provided on the first filter screen; each rod is fixed relative to the first filter screen, and the two rods are movable relative to each other; when the fluid has few impurities or a high flow rate is required, the first filter screen is formed into a single-layer filter structure as a whole by controlling the relative movement of the two rods; the single-layer filter structure filters the fluid passing through once, minimizes flow resistance, and significantly increases the fluid flow rate; when deep filtration is required, the first filter screen is formed into a multi-layer filter structure as a whole by controlling the relative movement of the two rods; the multi-layer filter structure filters the fluid passing through at least twice, repeatedly intercepts impurities, and significantly enhances the filtration effect;

[0063] Only a single filter screen is needed to achieve the effect of "multiple filter screens in series", avoiding the unnecessary flow resistance of traditional multi-layer filter screens under low impurity conditions, and significantly reducing system energy consumption.

[0064] <Runner>

[0065] like Figures 1 to 5 As shown, this embodiment provides a flow channel 2, in which a first filter screen 1 is provided. Two rods 11 are provided on the first filter screen 1, and the two rods 11 are spaced apart. Specifically, the length direction of the first filter screen 1 is parallel to the extension direction of the flow channel 2, and the extension direction of the rods 11 is parallel to the width direction of the first filter screen 1.

[0066] Each rod 11 is fixed relative to the first filter screen 1, and the two rods 11 are arranged in the flow channel 2 so as to be relatively movable. Specifically, the two rods 11 can move relative to each other along the extension direction of the flow channel 2, thereby approaching or moving away from each other.

[0067] The first filter screen 1 is configured such that, by controlling the relative movement of the two rods 11, the first filter screen 1 as a whole can form a single-layer filter structure or a multi-layer filter structure; the single-layer filter structure filters the fluid flowing through once, and the multi-layer filter structure filters the fluid flowing through at least twice;

[0068] According to the filtering requirements, the two rods 11 are controlled to move relative to each other so that the first filter screen 1 as a whole forms a single-layer filtering structure or a multi-layer filtering structure, thereby taking into account both the filtering effect and the flow rate of the fluid.

[0069] When the fluid flowing through the flow channel 2 contains relatively few impurities, the first filter screen 1 can be formed into a single-layer filter structure as a whole; when the fluid flowing through the flow channel 2 contains relatively many impurities, the first filter screen 1 can be formed into a multi-layer filter structure as a whole.

[0070] Furthermore, the first filter screen 1 is configured as follows: when the two rods 11 are away from each other and the first filter screen 1 is in the expanded state, the first filter screen 1 as a whole forms a single-layer filtering structure; the single-layer filtering structure covers the cross-section of the flow channel 2 once or the single-layer filtering structure does not cover the cross-section of the flow channel 2 and is located between the inlet 231 and the outlet 211 of the flow channel 2; specifically, when the first filter screen 1 is in the expanded state, the filtering surface of the first filter screen 1 is parallel to the extension direction of the flow channel 2 or is inclined relative to the extension direction of the flow channel 2; the projection of the first filter screen 1 in the extension direction of the flow channel 2 covers the cross-section of the flow channel 2 once or the first filter screen 1 is located between the inlet 231 and the outlet 211 of the flow channel 2, that is, when the fluid enters the flow channel 2 through the inlet 231 and then discharges the flow channel 2 from the outlet 211, the first filter screen 1 only filters the fluid once; preferably, when the first filter screen 1 is in the expanded state, the filtering surface of the first filter screen 1 is parallel to the extension direction of the flow channel 2;

[0071] When the two rods 11 are close to each other and the first filter screen 1 is in a stacked state, the first filter screen 1 as a whole forms a multi-layer filter structure; the multi-layer filter structure covers the cross section of the flow channel 2 at least twice; the multi-layer filter structure includes a plurality of stacked filter segments 13, and when the distance between the two rods 11 is different, the multi-layer filter structure includes a different number of filter segments 13; by adjusting the spacing between the two rods 11 in the length direction of the first filter screen 1, the first filter screen 1 as a whole can form a multi-layer filter structure including different numbers of stacked filter segments 13; the more stacked filter segments 13, the better the filtering effect on the fluid;

[0072] Specifically, the multi-layer filtering structure is a U-shaped filtering structure or a wave-shaped filtering structure, and the wave-shaped filtering structure includes wave-shaped filtering structures of different periods; when the waveform formed between the two rods 11 is one period, the wave-shaped filtering structure is a wave-shaped filtering structure of one period; Figure 2 As shown, when the waveform formed between the two rods 11 is one and a half cycles, the wave-type filtering structure is a wave-type filtering structure of one and a half cycles; when the waveform formed between the two rods 11 is two cycles, the wave-type filtering structure is a wave-type filtering structure of two cycles; and so on.

[0073] The wave-shaped filtering structure includes a curved wave-shaped filtering structure or a sawtooth wave-shaped filtering structure;

[0074] Preferably, the first filter screen 1 has a planar structure when fully unfolded, and has a curved wave structure when stacked.

[0075] The relative movement of the two rods 11 is further described below. The rods 11 are slidably arranged on the side wall of the flow channel 2 along the extension direction of the flow channel 2.

[0076] The first filter screen 1 is configured such that the two rods 11 slide relative to each other, and the first filter screen 1 can be switched between a single-layer filter structure and a multi-layer filter structure.

[0077] The specific structure of the flow channel 2 is further described below. The side walls of the flow channel 2 include two first flow channel walls 21 arranged opposite to each other in a first direction 25 and two second flow channel walls 22 arranged opposite to each other in a second direction 26. The two first flow channel walls 21 and the two second flow channel walls 22 are arranged in a circle to form the flow channel 2. The first filter screen 1 includes a head end 121 and a tail end 122 in the longitudinal direction of the first filter screen 1. The head end 121 and the tail end 122 of the first filter screen 1 are both free ends and can move with the movement of the two rods 11. The two ends of the rod 11 are respectively slidably disposed on the two second flow channel walls 22, and the two rods 11 are respectively disposed near the head end 121 and the tail end 122.

[0078] The flow channel 2 includes a first end wall 23 and a second end wall 24 disposed opposite each other in the direction in which the flow channel 2 extends. The first end wall 23 is formed with an inlet 231, and one of the two first flow channel walls 21 is formed with an outlet 211 at an end adjacent to the second end wall 24. The inlet 231 and the outlet 211 are staggered in the cross-sectional direction of the flow channel 2. When the leading end 121 and the trailing end 122 of the first filter screen 1 follow the movement of the two rods 11, the leading end 121 of the first filter screen 1 always abuts the first flow channel wall 21 or the first end wall 23, and the trailing end 122 of the first filter screen 1 always abuts the first flow channel wall 21 or the second end wall 24.

[0079] The first filter screen 1 is configured as follows: when the first filter screen 1 forms a single-layer filter structure as a whole, the head end 121 and the tail end 122 of the first filter screen 1 respectively abut against the first end wall 23 and the second end wall 24, or the head end 121 and the tail end 122 of the first filter screen 1 respectively abut against the two first flow channel walls 21 (such as Figure 2 As shown); preferably, the head end 121 and the tail end 122 of the first filter screen 1 abut against the first end wall 23 and the second end wall 24 respectively; the fluid enters the flow channel 2 through the inlet 231, then flows through the single-layer filter structure, and is discharged through the outlet 211;

[0080] The first direction 25 is one of the length direction and the width direction of the cross section of the flow channel 2 , and the second direction 26 is the other of the length direction and the width direction of the cross section of the flow channel 2 .

[0081] Specifically, one of the two rods 11 is fixed, and the other rod 11 is slidably arranged; the second channel wall 22 is formed with a slide groove, which connects the inside and outside of the channel 2, and the extension direction of the slide groove is parallel to the extension direction of the channel 2, and a sliding shaft is provided in the slide groove; the second channel wall 22 is also provided with a gear rack mechanism and a drive motor, and the gear rack mechanism is located outside the channel 2; the rack is slidably arranged on the second channel wall 22, and the rack and one end of the slidable rod 11 are connected by a sliding shaft; the gear is rotatably arranged on the second channel wall 22, the gear and the rack are meshed, and the gear and the drive motor are driven and connected; when the drive motor is running, the gear slides with the rack, and then the rod 11 slides along the extension direction of the slide groove, causing the two rods 11 to move relative to each other.

[0082] The following further explains that the first filter screen forms a multi-layer filtering structure as a whole. The first filter screen 1 is configured as follows: when the first filter screen 1 forms a multi-layer filtering structure as a whole, the head end 121 and the tail end 122 of the first filter screen 1 and the connection 14 of the two adjacent filter sections 13 all abut the first flow channel wall 21.

[0083] Furthermore, the first filter screen 1 is configured such that, when the multi-layer filter structure is a U-shaped filter structure, the head end 121 and the tail end 122 of the first filter screen 1 both abut against one of the two first flow channel walls 21, and the connection 14 of two adjacent filter segments 13 abuts against the other of the two first flow channel walls 21. In this way, the first filter screen 1 as a whole forms two stacked filter segments 13, filtering the fluid passing therethrough twice.

[0084] When the multi-layer filter structure is a wave-shaped filter structure, the head end 121 of the first filter screen 1, the connection 14 of two adjacent filter segments 13, and the tail end 122 of the first filter screen 1 alternately abut one of the two first flow channel walls 21. In the wave-shaped filter structure, the connection 14 of two adjacent filter segments 13 forms a wave crest or a wave trough, with the wave crests abutting one of the two first flow channel walls 21, and the wave troughs abutting the other of the two first flow channel walls 21.

[0085] Specifically, if Figure 3 As shown, when the multi-layer filter structure is a periodic wave-shaped filter structure, the multi-layer filter structure includes three filter segments 13, and the connection 14 between two adjacent filter segments 13 includes two; the head end 121 of the first filter screen 1 and the connection 14 away from the head end 121 both abut against one of the two first flow channel walls 21, and the tail end 122 of the first filter screen 1 and the connection 14 away from the tail end 122 both abut against the other of the two first flow channel walls 21; thus, the first filter screen 1 as a whole forms three stacked filter segments 13, filtering the fluid flowing therethrough three times;

[0086] When the multi-layer filter structure is a semi-periodic wave-shaped filter structure, the multi-layer filter structure includes four filter segments 13, and the connection points 14 between two adjacent filter segments 13 include three. The head end 121 of the first filter screen 1, the middle connection point 14, and the tail end 122 of the first filter screen 1 all abut one of the two first flow channel walls 21, and the connection point 14 near the head end 121 and the connection point 14 near the tail end 122 both abut the other of the two first flow channel walls 21. In this way, the first filter screen 1 as a whole forms four stacked filter segments 13, filtering the fluid passing through four times.

[0087] When the multi-layer filtering structure is a two-period wave-shaped filtering structure, the multi-layer filtering structure includes five filtering segments 13, and the connection points 14 between two adjacent filtering segments 13 include four; the head end 121 of the first filter mesh 1, the four connection points 14 and the tail end 122 of the first filter mesh 1 alternately abut one of the two first flow channel walls 21; in this way, the first filter mesh 1 as a whole forms five stacked filtering segments 13, filtering the fluid flowing through five times.

[0088] The following further describes how to form a multi-layer filter structure. The first filter screen 1 is configured such that the spacing between the two rods 11 in the length direction of the first filter screen 1 is adjusted according to the spacing between the two first flow channel walls 21, so that the first filter screen 1 as a whole forms a single-layer filter structure, a U-shaped filter structure, or a wave-shaped filter structure with different periods.

[0089] The wave-shaped filtering structures with different periods include at least one wave-shaped filtering structure with one period, one and a half wave-shaped filtering structure and two wave-shaped filtering structures;

[0090] Specifically, when the distance between the two rods 11 is the largest, the first filter screen 1 forms a single-layer filter structure as a whole; the smaller the distance between the two rods 11, the more filter segments 13 the multi-layer filter structure includes; as the distance between the two rods 11 gradually decreases, the first filter screen 1 forms a U-shaped filter structure, a wave-shaped filter structure of one cycle, a wave-shaped filter structure of one and a half cycles, a wave-shaped filter structure of two cycles, and so on; the number of filter segments 13 included in the multi-layer filter structure formed by the first filter screen 1 as a whole is related to the distance between the two rods 11, and the distance between the two rods 11 is related to the amplitude of the wave-shaped filter structure, that is, the distance between the two rods 11 is related to the distance between the two first flow channel walls 21; for example: the two first flow channels The distance between the walls 21 is s, that is, the sum of the peak amplitude and the trough amplitude in the wave-type filtering structure is s; when the distance between the two rods 11 is k1*s, the multi-layer filtering structure formed by the first filter mesh 1 as a whole is a U-shaped filtering structure; when the distance between the two rods 11 is k2*s, the multi-layer filtering structure formed by the first filter mesh 1 as a whole is a wave-type filtering structure of one period; when the distance between the two rods 11 is k3*s, the multi-layer filtering structure formed by the first filter mesh 1 as a whole is a wave-type filtering structure of one and a half periods; when the distance between the two rods 11 is k4*s, the multi-layer filtering structure formed by the first filter mesh 1 as a whole is a wave-type filtering structure of two periods; wherein, k1, k2, k3 and k4 are all coefficients, and k1>k2>k3>k4.

[0091] When the multi-layer filter structure is a U-shaped filter structure, the multi-layer filter structure includes two stacked filter segments 13, which can filter the fluid flowing through twice; when the multi-layer filter structure is a one-cycle wave-shaped filter structure, the multi-layer filter structure includes three stacked filter segments 13, which can filter the fluid flowing through three times; when the multi-layer filter structure is a one-and-a-half-cycle wave-shaped filter structure, the multi-layer filter structure includes four stacked filter segments 13, which can filter the fluid flowing through four times; when the multi-layer filter structure is a two-cycle wave-shaped filter structure, the multi-layer filter structure includes five stacked filter segments 13, which can filter the fluid flowing through five times; and so on. According to actual filtering needs, the first filter net 1 can be formed as a whole into a multi-layer filter structure including a corresponding number of stacked filter segments 13 to improve the filtering effect.

[0092] In addition, the filtration grades of at least two of the multiple filtration segments 13 are different, and the filtration grade of the upstream filtration segment 13 is lower than the filtration grade of the downstream filtration segment 13; that is, when the fluid flows through the multiple filtration segments 13, the impurities therein can be throttled step by step to achieve an efficient filtration effect; the filtration grade refers to the mesh size of the filter net, and the smaller the value, the higher the filtration grade.

[0093] like Figure 4As shown, the following further describes the conversion of different filtering structures of the first filter 1. A flow velocity sensor is further provided in the flow channel 2, and the flow velocity sensor is used to detect the flow velocity of the fluid in the flow channel 2; the flow velocity sensor includes a first flow velocity sensor 41 and a second flow velocity sensor 42, and the first flow velocity sensor 41 and the second flow velocity sensor 42 are respectively arranged on the windward side and the leeward side of the filtering surface of the first filter 1;

[0094] The first filter 1 is configured to: when the difference between the flow rate detected by the first flow rate sensor 41 and the flow rate detected by the second flow rate sensor 42 is greater than a preset value and lasts for a preset time period, control the relative movement of the two rods 11 to switch the first filter 1 between the single-layer filter structure and the multi-layer filter structure;

[0095] After the first filter 1 has been used for a period of time, the amount of impurities accumulated increases, and the impact on the flow rate of the fluid increases. By changing the filtering structure of the first filter 1, the impurities on the first filter 1 can be promoted to fall off, thereby cleaning the first filter 1 and reducing the impact of impurities on the flow rate of the fluid.

[0096] It should also be noted that if Figure 5 As shown, the outlet 211 of the flow channel 2 is provided with a second filter 3. When the first filter 1 switches between the single-layer filter structure and the multi-layer filter structure, impurities on the first filter 1 will fall off. If not cleaned in time, these impurities will mix with the fluid and flow with the fluid. The second filter 3 can intercept these impurities, so that the fluid in the flow channel 2 can be effectively filtered.

[0097] Preferably, the filtration level of the second filter 3 is greater than that of the first filter 1. The first filter 1 removes large impurities in the fluid, and the second filter 3 removes small impurities in the fluid, so that there are fewer impurities in the fluid discharged through the outlet 211 of the flow channel 2.

[0098] <Clothing treatment equipment>

[0099] like Figure 6 As shown, this embodiment further provides a clothes processing device 5, including a drum 52; the drum 52 is provided with an air inlet and an air outlet communicating with the interior of the drum 52, the air inlet and the air outlet being communicated with each other through a drying air duct 53, so that the drying air duct 53 and the drum 52 form a drying circuit, in which a drying air flow circulates; when the drying air flow flows through the drum 52, heat is exchanged with the clothes in the drum 52, thereby achieving the purpose of drying the clothes;

[0100] The drying air duct 53 includes an air outlet duct 533 connected to the air outlet, and the air outlet duct 533 is any one of the above-mentioned flow channels 2.

[0101] The drying duct 53 also includes an air inlet duct 531 and an intermediate air duct 532, and the clothing processing device 5 also includes a heating module 54 and a drying fan 55; the air inlet, the air inlet duct 531, the intermediate air duct 532, the drying fan 55, the air outlet duct 533 and the air outlet are connected in sequence, so that the drying duct 53 and the drum 52 form a drying circuit; the air inlet duct 531 is used to input drying airflow into the drum 52, and the air outlet is used to output the drying airflow in the drum 52; the heating module 54 is arranged in the intermediate air duct 532 and close to the air inlet duct 531, and is used to heat the drying airflow flowing through; the drying fan 55 is used to provide power to the drying airflow, so that the drying airflow circulates in the drying circuit.

[0102] The clothes processing device 5 further includes a housing 51 , and a drum 52 and a drying duct 53 are both arranged inside the housing 51 .

[0103] <Control Method>

[0104] like Figure 7 As shown, this embodiment also provides a control method for a clothes processing device 5, where the clothes processing device 5 is the clothes processing device 5 described above; when the clothes processing device 5 runs a drying program, the control method includes:

[0105] S1. Determine the material type of the clothes inside the drum 52;

[0106] S2. According to the material type of the clothes in the drum 52, the first filter 1 is controlled to form a filtering structure corresponding to the material type of the clothes in the drum 52;

[0107] According to the material type of the clothes, the filtering structure formed by the first filter 1 as a whole is intelligently changed to make the filtering structure meet the material type of the clothes, improve the filtering effect of lint, and at the same time ensure the flow rate of the drying air flow to improve the drying speed;

[0108] Among them, the material type is determined by the user manually selecting a program or a clothing composition sensor; the filtering structure corresponding to the material type of the clothing inside the drum 52 includes a single-layer filtering structure and a multi-layer filtering structure; the clothing processing device 5 is set to a single-layer filtering structure by default, which reduces the impact of the first filter 1 on the drying air flow rate and speeds up the drying speed.

[0109] Furthermore, S2 includes:

[0110] When the material of the clothes in the drum 52 is not easy to shed lint, the first filter 1 is controlled to form a single-layer filtering structure. The dry air in the drum 52 enters the air outlet and flows through the first filter 1 and the second filter 3 in sequence, filtering the dry air twice. The first filter 1 removes large-volume lint in the dry air, and the second filter 3 removes small-volume lint and dust. While ensuring the filtering effect, the flow rate of the dry air is increased, thereby improving the drying efficiency.

[0111] When the material type of the clothes in the drum 52 is a material type prone to lint, the first filter screen 1 is controlled to form a multi-layer filter structure as a whole; the drying airflow in the drum 52 enters the air outlet channel, and sequentially flows through the first filter screen 1 and the second filter screen 3, so that the drying airflow is filtered at least three times, effectively and completely removing the lint in the drying airflow, avoiding that the lint blocks the drying air duct 53 or affects the operation of the drying fan 55 and the heating module 54, and improving the reliability of the clothes treatment device 5.

[0112] Specifically, S2 includes:

[0113] When the material type of the clothes in the drum 52 includes at least one of silk and chemical fiber, the first filter screen 1 is controlled to form a single-layer filter structure as a whole;

[0114] When the material type of the clothes in the drum 52 includes at least one of cotton, hemp and wool, the first filter screen 1 is controlled to form a multi-layer filter structure as a whole.

[0115] The above specifically illustrates and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims.

Claims

1. A flow channel, characterized in that: A first filter screen (1) is provided in the flow channel (2), and two rods (11) are provided on the first filter screen (1), and the two rods (11) are arranged at intervals; Each of the rods (11) is fixed relative to the first filter screen (1), and the two rods (11) are movable relative to each other; The first filter screen (1) is configured such that, by controlling the relative movement of the two rods (11), the first filter screen (1) can be formed as a whole into a single-layer filter structure or a multi-layer filter structure; the single-layer filter structure filters the fluid flowing through once, and the multi-layer filter structure filters the fluid flowing through at least twice.

2. The flow channel according to claim 1, characterized in that The first filter screen (1) is configured such that: when the two rods (11) are spaced apart from each other and the first filter screen (1) is in an unfolded state, the first filter screen (1) as a whole forms the single-layer filter structure; the single-layer filter structure covers the cross section of the flow channel (2) once, or the single-layer filter structure does not cover the cross section of the flow channel (2) and is located between the inlet (231) and the outlet (211) of the flow channel (2); When the two rods (11) are close to each other and the first filter screen (1) is in a stacked state, the first filter screen (1) as a whole forms the multi-layer filter structure; the multi-layer filter structure covers the cross section of the flow channel (2) at least twice.

3. The flow channel according to claim 2, characterized in that The multi-layer filtering structure is a U-shaped filtering structure or a wave-shaped filtering structure.

4. The flow channel according to claim 2, characterized in that The rod (11) is slidably arranged on the side wall of the flow channel (2) along the extension direction of the flow channel (2); The first filter screen (1) is configured such that the two rods (11) slide relative to each other, and the first filter screen (1) can be switched between the single-layer filter structure and the multi-layer filter structure.

5. The flow channel according to claim 4, characterized in that The side walls of the flow channel (2) include two first flow channel walls (21) arranged opposite to each other in a first direction (25) and two second flow channel walls (22) arranged opposite to each other in a second direction (26); the first filter screen (1) includes a head end (121) and a tail end (122) in its length direction, and the rod (11) is slidably arranged on the two second flow channel walls (22); The flow channel (2) comprises a first end wall (23) and a second end wall (24) arranged opposite to each other in the extension direction of the flow channel (2), the first end wall (23) being formed with the inlet (231), and one of the two first flow channel walls (21) being formed with the outlet (211) at one end close to the second end wall (24); The first filter screen (1) is configured such that: when the first filter screen (1) as a whole forms the single-layer filter structure, the head end (121) and the tail end (122) respectively abut against the first end wall (23) and the second end wall (24), or the head end (121) and the tail end (122) respectively abut against the two first flow channel walls (21); The first direction (25) is one of the length direction and the width direction of the cross section of the flow channel (2), and the second direction (26) is the other of the length direction and the width direction of the cross section of the flow channel (2).

6. The flow channel according to claim 5, characterized in that The multi-layer filter structure comprises a plurality of filter segments (13) stacked in layers; the first filter screen (1) is configured such that when the first filter screen (1) as a whole forms the multi-layer filter structure, the head end (121), the tail end (122) and the connection point (14) between two adjacent filter segments (13) all abut against the first flow channel wall (21).

7. The flow channel according to claim 6, characterized in that The first filter screen (1) is configured such that: when the multi-layer filter structure is a U-shaped filter structure, the head end (121) and the tail end (122) both abut against one of the two first flow channel walls (21), and the connection point (14) of two adjacent filter sections (13) abuts against the other of the two first flow channel walls (21); When the multi-layer filtering structure is a wave-shaped filtering structure, the head end (121), the connection point (14) of two adjacent filtering sections (13), and the tail end (122) alternately abut against one of the two first flow channel walls (21).

8. The flow channel according to claim 7, characterized in that The first filter screen (1) is configured to adjust the distance between the two rods (11) in the length direction of the first filter screen (1) according to the distance between the two first flow channel walls (21), so that the first filter screen (1) as a whole forms the single-layer filter structure or the U-shaped filter structure or the wave-shaped filter structure with different periods; The wave-shaped filtering structures with different periods include at least a wave-shaped filtering structure with one period, a wave-shaped filtering structure with one and a half periods, and a wave-shaped filtering structure with two periods.

9. The flow channel according to claim 6, wherein: The filtration grades of at least two of the plurality of filtration sections (13) are different, and the filtration grade of the filtration section (13) located upstream is lower than the filtration grade of the filtration section (13) located downstream.

10. The flow channel according to claim 1, wherein A flow velocity sensor is further provided in the flow channel (2), and is used to detect the flow velocity of the fluid in the flow channel (2); the flow velocity sensor comprises a first flow velocity sensor (41) and a second flow velocity sensor (42), and the first flow velocity sensor (41) and the second flow velocity sensor (42) are respectively provided on the windward side and the leeward side of the filtering surface of the first filter screen (1); The first filter screen (1) is configured to control the relative movement of the two rods (11) when the difference between the flow rate detected by the first flow rate sensor (41) and the flow rate detected by the second flow rate sensor (42) is greater than a preset value, so that the first filter screen (1) switches between the single-layer filter structure and the multi-layer filter structure.

11. The flow channel according to claim 1, wherein The outlet (211) of the flow channel (2) is provided with a second filter screen (3), and the filtering grade of the second filter screen (3) is greater than the filtering grade of the first filter screen (1).

12. A clothes processing device (5), characterized in that: The invention comprises a drum (52); the drum (52) is provided with an air inlet and an air outlet communicated with the interior of the drum (52); the air inlet and the air outlet are communicated with each other through a drying air duct (53), so that the drying air duct (53) and the drum (52) form a drying circuit, and a drying air flow can circulate in the drying circuit; The drying air duct (53) includes an air outlet duct (533) connected to the air outlet, and the air outlet duct (533) is the flow duct according to any one of claims 1 to 11.

13. A method for controlling a clothes processing device (5), wherein the clothes processing device (5) is the clothes processing device (5) according to claim 12; characterized in that: When the clothes processing device (5) runs a drying program, the control method includes: Determining the material type of the clothing inside the drum (52); According to the material type of the clothes inside the drum (52), the first filter screen (1) is controlled to form a filter structure corresponding to the material type of the clothes inside the drum (52); The filtering structure corresponding to the material type of the clothes inside the drum (52) includes a single-layer filtering structure and a multi-layer filtering structure.

14. The control method of the clothes processing device (5) according to claim 13, characterized in that: The controlling of the first filter screen (1) as a whole to form a filtering structure corresponding to the material type of the clothes inside the drum (52) according to the material type of the clothes inside the drum (52) comprises: When the material type of the clothes inside the drum (52) is a material type that is not easy to shed lint, the first filter screen (1) is controlled to form a single-layer filtering structure as a whole; When the material type of the clothes inside the drum (52) is a material type that easily sheds lint, the first filter screen (1) is controlled to form a multi-layer filter structure as a whole.

15. The control method of the laundry processing device (5) according to claim 13, characterized in that: The controlling of the first filter screen (1) as a whole to form a filtering structure corresponding to the material type of the clothes inside the drum (52) according to the material type of the clothes inside the drum (52) comprises: When the material type of the clothes inside the drum (52) includes at least one of silk and chemical fiber, the first filter net (1) is controlled to form a single-layer filter structure as a whole; When the material type of the clothes inside the drum (52) includes at least one of cotton, linen and wool, the first filter screen (1) is controlled to form a multi-layer filter structure as a whole.

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