Patent Publication Number: US-2022212965-A1

Title: Electrode plate, electrolysis apparatus, and laundry treatment device

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     The present disclosure is a national phase application of International Application No. PCT/CN2020/103868, filed on Jul. 23, 2020, which claims priority to Chinese patent application No. 201911204716.2 filed on Nov. 29, 2019 and Chinese patent application No. 201922107348.1 filed on Nov. 29, 2019, the entireties of which are herein incorporated by reference. 
    
    
     FIELD 
     The disclosure relates to the field of electrolysis of water, and in particular to an electrode plate, an electrolysis apparatus, and a laundry treatment device. 
     BACKGROUND 
     Due to an extremely high oxidation potential (2.80 eV), a hydroxyl free radical (.OH) has strong oxidation capacity, and may generate a rapid chain reaction with most of organic pollutants and oxidize harmful substances into CO 2 , H 2 O or mineral salt without selectivity, and may not induce secondary pollution. Therefore, an electrolysis electrode may be applied to a field of a laundry treatment device, and laundries are sterilized and disinfected through electrolyzed water. However, in a related art, the electrolysis electrode is in a shape of a smooth flat plate, therefore, in a process of electrolysis of water, an electrolysis efficiency of the electrolysis electrode is relatively low, and bubbles on a surface of the electrolysis electrode are likely to gather to form large bubbles. 
     SUMMARY 
     In view of the above, embodiments of the disclosure are intended to provide an electrode plate with a relatively high electrolysis efficiency, an electrolysis apparatus, and a laundry treatment device. 
     Some embodiments of the disclosure provide an electrode plate, having formed therein multiple through holes penetrating the electrode plate in a thickness direction of the electrode plate, and a distribution density of the through holes in the electrode plate is 1-10/cm 2 . 
     In some implementations, each of the through holes is circular and has a diameter of 2 mm to 5 mm. 
     In some implementations, a distance between adjacent two of the through holes is 2 mm to 10 mm. 
     In some implementations, a distance between the through hole closest to an edge of the electrode plate and the edge of the electrode plate is 2 mm to 10 mm. 
     Embodiments of the disclosure provide an electrolysis apparatus, including a cathode conductive connector, an anode conductive connector, two electrode plates of any of the above descriptions, here one of the electrode plates is a cathode plate, the other of the electrode plates is an anode plate, the cathode plate and the anode plate are arranged in a stack, and the through holes in the anode plate and the through holes in the cathode plate are arranged to face each other; the cathode conductive connector is in conductive connection with the cathode plate; and the anode conductive connector is in conductive connection with the anode plate. 
     Embodiments of the disclosure provide a laundry treatment device, including a cylinder assembly including an outer cylinder and an inner cylinder rotationally arranged within the outer cylinder; and the electrolysis apparatus of any of the above descriptions, in which the cathode plate and the anode plate are arranged between the outer cylinder and the inner cylinder, and an end, away from the anode plate, of the anode conductive connector is located outside of the outer cylinder, and an end, away from the cathode plate, of the cathode conductive connector is located outside of the outer cylinder. 
     Embodiments of the disclosure provide another laundry treatment device, including a cylinder assembly; and the electrolysis apparatus of any of the above descriptions, arranged on a water inlet channel provided in the laundry treatment device and communicating with the cylinder assembly, to electrolyze water in the water inlet channel. 
     In some implementations, the electrolysis apparatus includes a shell in which an electrolysis cavity, as well as a to-be-electrolyzed water inlet and an electrolyzed water outlet communicating with the electrolysis cavity are formed, and the cathode plate and the anode plate are arranged within the electrolysis cavity, and an end, away from the cathode plate, of the cathode conductive connector is located outside of the shell, and an end, away from the anode plate, of the anode conductive connector is located outside of the shell, and the electrolysis cavity is located in the water inlet channel. 
     In some implementations, the laundry treatment device includes a water inlet valve communicating with the to-be-electrolyzed water inlet, and a detergent box provided with a storage tank containing a detergent and communicating with the electrolyzed water outlet to guide the electrolyzed water within the electrolysis cavity to the storage tank. 
     In some implementations, the water inlet valve is provided with a water inlet, a first water outlet communicating with the to-be-electrolyzed water inlet, and a second water outlet communicating with the detergent box, and the water inlet valve selectively communicates the water inlet with the first water outlet or the second water outlet. 
     In some implementations, the electrolyzed water outlet is located at an end, close to the detergent box, of the shell, and the to-be-electrolyzed water inlet is located at an end, away from the electrolyzed water outlet, of the shell. 
     In some implementations, the laundry treatment device includes a workbench arranged on a top side of the cylinder assembly and provided with a laundry feeding opening, and the electrolysis apparatus is fixedly connected to a bottom side of the workbench. 
     In some implementations, the shell includes a shell body, as well as a first end cover and a second end cover hermetically arranged at two ends, opposite in a length direction, of the shell body, a hollow containing space is enclosed by the shell body, the first end cover and the second end cover together, the electrolysis cavity is formed by at least a part of the containing space, the electrolyzed water outlet is formed in the first end cover, and the to-be-electrolyzed water inlet is formed in the second end cover. 
     In the electrode plate according to the embodiments of the disclosure, on one hand, because a charge density at the junction of an inner wall of the through hole and a surface of the electrode plate is relatively large, and an electric field intensity nearby is relatively high, an electrolysis efficiency may be greatly improved, more active substances such as .OH, active chlorine and the like may be generated, while more microbubbles may also be generated, which may improve the sterilization, cross-color prevention and washing effects; on the other hand, water flow may flow from one side of the electrode plate to the other side of the electrode plate through the through hole, and may take away the microbubbles on the surface of the electrode plate and a surface of the inner wall of the through hole in time, to prevent the microbubbles from gathering to form large bubbles. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates a schematic structural diagram of an electrolysis apparatus according to a first embodiment of the disclosure. 
         FIG. 2  illustrates a schematic exploded diagram of the structure as shown in  FIG. 1 . 
         FIG. 3  illustrates a schematic structural diagram of an electrode plate of the electrolysis apparatus as shown in  FIG. 1 . 
         FIG. 4  illustrates a schematic structural diagram of a laundry treatment device according to a first embodiment of the disclosure, here the laundry treatment device is provided with the electrolysis apparatus according to the first embodiment. 
         FIG. 5  illustrates a schematic structural diagram of a laundry treatment device according to a second embodiment of the disclosure, here the laundry treatment device is provided with the electrolysis apparatus according to the first embodiment. 
         FIG. 6  illustrates part of a schematic structural diagram of a laundry treatment device according to a third embodiment of the disclosure, here the laundry treatment device is provided with an electrolysis apparatus according to a second embodiment. 
         FIG. 7  illustrates a bottom view of the structure as shown in  FIG. 6 . 
         FIG. 8  illustrates a schematic diagram of the structure as shown in  FIG. 6  from another perspective. 
         FIG. 9  illustrates a schematic partial-exploded diagram of the structure as shown in  FIG. 8 . 
         FIG. 10  illustrates a schematic assembling diagram of the electrolysis apparatus, a detergent box and a water inlet valve in the structure as shown in  FIG. 9 . 
         FIG. 11  illustrates a schematic partial-exploded diagram of the structure as shown in  FIG. 10 . 
         FIG. 12  illustrates a schematic structural diagram of an electrolysis apparatus according to a second embodiment of the disclosure. 
         FIG. 13  illustrates a schematic assembling diagram of the structure as shown in  FIG. 12 . 
         FIG. 14  illustrates a cross-sectional view along the A-A direction of  FIG. 13 . 
     
    
    
     DETAILED DESCRIPTION OF THE DISCLOSURE 
     It should be noted that embodiments of the disclosure may be combined with each other without conflict, and detailed descriptions in a specific implementation should be understood as an explanation of embodiments of the disclosure and should not be taken as unduly limitations of the disclosure. 
     During describing the embodiments of disclosure, orientation or position relationships indicated by terms “upper”, “lower”, “front”, “rear”, “horizontal”, “top” and “bottom” are based on orientation or position relationships as shown in  FIG. 4 , and it should be understood that the orientation terms are intended only to conveniently describe the disclosure and simplify descriptions, rather than to indicate or imply that devices or components indicated by them must be in specific orientations or structured and operated in specific orientations, and thus should not be understood as limitations of the disclosure. 
     Referring to  FIGS. 1 and 2 , the embodiments of the disclosure provide an electrolysis apparatus  2  which includes two electrode plates  22 , one of the electrode plates  22  is an anode plate  222  and the other of the electrode plates  22  is a cathode plate  221 , when the anode plate  222  and the cathode plate  221  are energized, then the anode plate  222  and the cathode plate  221  may begin to electrolyze water. In an embodiment, the electrolysis apparatus  2  further includes a cathode conductive connector  24  and an anode conductive connector  25 , the cathode conductive connector  24  is in conductive connection with the cathode plate  221 , exemplarily, the cathode conductive connector  24  is welded to the cathode plate  221 , and the anode conductive connector  25  is in conductive connection with the anode plate  222 , exemplarily, the anode conductive connector  25  is welded to the anode plate  222 . 
     The cathode conductive connector  24  and the anode conductive connector  25  are configured to connect a power supply, and specific structures of the cathode conductive connector  24  and the anode conductive connector  25  are not limited, as long as connection to the power supply is facilitated. In an embodiment, the cathode conductive connector  24  and the anode conductive connector  25  are cylindrical. 
     The embodiment of the disclosure is described with respect to an example of the application of the electrolysis apparatus  2  to a laundry treatment device, and it may be understood that the electrolysis apparatus  2  may also be used in other fields. 
     The specific type of the laundry treatment device is not limited, and for example, may be a washing machine, a laundry dryer, an all-in-one washing and drying machine. 
     Water for washing laundries in the laundry treatment device is electrolyzed by the electrode plate  22  to generate .OH with strong oxidation activity, .OH have an extremely high oxidation potential (2.80 eV), so that .OH have extremely strong oxidation capacity, may generate a rapid chain reaction with most of organic pollutants, and may realize sterilization and disinfection at a low temperature and does not damage laundries, a part of .OH react with chlorine molecules in tap water to generate active chlorine, and the active chlorine may exist for a long time and has a long-term bacteriostatic effect; and a large number of .OH oxidize and destroy chromophoric groups of dye molecules of colored laundries dissociated into water during washing to decolorize dyes, so that the dissociated dyes are prevented from staining light-color laundries to induce cross-color, and the dye molecules are decomposed into harmless carbon dioxide, water and inorganic salt through continuous reaction. Furthermore, a large number of microbubbles may be generated by the electrode plate  22 , since a diameter of each of the microbubbles is small, generally smaller than 50 um, the microbubbles may well enter an interior of laundry fibers during washing, circulating flushing of the microbubbles is continuously generated through blasting, adsorption and floating effects of the microbubbles, to assist a detergent to thoroughly remove sebum, grease, tiny dust and other dirt accumulated in the laundry fibers, and thus the washing effect may be improved. 
     In order to improve the washing effect, abundant .OH, active chlorine, microbubbles and the like need to be contained in electrolyzed water, therefore according to the embodiment of the disclosure, referring to  FIG. 3 , multiple through holes  22   a  penetrating the electrode plate  22  in a thickness direction of the electrode plate  22  are formed in the electrode plate  22 , and a distribution density of the through holes  22   a  in the electrode plate  22  is 1-10/cm 2 , 1-10 through holes  22   a  are distributed per square centimeter of the electrode plate  22 , for example, one, two, three, four, five, six, seven, eight, nine, or ten through holes  22   a  may be distributed per square centimeter of the electrode plate  22 . On one hand, because a charge density at the junction of an inner wall of the through hole  22   a  and a surface of the electrode plate  22  is relatively large, and an electric field intensity nearby is relatively high, an electrolysis efficiency may be greatly improved, more active substances such as .OH, active chlorine and the like may be generated, while more microbubbles may also be generated, which may improve the sterilization and washing effects; on the other hand, water flow may flow from one side of the electrode plate  22  to the other side of the electrode plate  22  through the through hole  22   a,  and may take away the microbubbles on the surface of the electrode plate  22  and a surface of the inner wall of the through hole  22   a  in time, to prevent the microbubbles from gathering to form large bubbles. 
     The shape of the through hole  22   a  is not limited, and for example, may be circular, oval, polygonal or the like. Exemplarily, in an embodiment of the disclosure, referring to  FIG. 3 , each of the through holes  22   a  is circular and has a diameter of 2 mm to 5 mm, that is, the diameter of the through hole  22   a  is in a range of 2 mm to 5 mm, that is, the range of the diameter of the through hole  22   a  is 2 mm to 5 mm, and for example, may be 2 mm, 3 mm, 4 mm, 5 mm or the like. The through holes  22   a  in this dimensional range facilitate the formation of the microbubbles at the through holes  22   a  on one hand, and facilitate the detachment of the microbubbles from the surface of the electrode plate  22  on the other hand. Specifically, when the diameter of the through hole  22   a  is too large, the number of the through holes  22   a  may be very small without changing the area and shape of the electrode plate  22 , and the number of the microbubbles may also be small; and when the diameter of the through hole  22   a  is too small, a tip area of an edge of the through hole  22   a  is small, which is not conducive to the generation of the microbubbles, furthermore, the generated microbubbles are difficult to quickly overflow in the through hole  22   a  and easily gather in the through hole  22   a  to form large bubbles. 
     In an embodiment, a distance d 2  between the through hole  22   a  closest to an edge of the electrode plate  22  and the edge of the electrode plate  22  is 2 mm to 10 mm, that is, the distance d 2  has a value in a range of 2 mm to 10 mm, and for example, may be 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. Therefore, processing of the through holes  22   a  is facilitated in case that more through holes  22   a  are formed in the electrode plate  22 . Specifically, when the through holes  22   a  are too close to the edge, the through holes  22   a  close to the edge may be broken in the process of processing the through holes  22   a,  sharp thorns may be formed in the edge of the electrode plate  22 , and when the electrode plate  22  is applied to the laundry treatment device, the thorns at the edge of the electrode plate  22  easily hook fluffs mixed in water, so that the fluffs are easily to accumulate on the electrode plate  22 . 
     In an embodiment, a distance d 1  between adjacent two of the through holes  22   a  is 2 mm to 10 mm, that is, the distance d 1  has a value in a range of 2 mm to 10 mm, and for example, may be 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. That is, it is necessary to guarantee a suitable distance between adjacent two of the through holes  22   a  for facilitating processing. Specifically, during processing, a material of the electrode plate  22  is pressed by a die to form the above-described through holes  22   a  in the electrode plate  22 . When the distance between two through holes  22   a  is too small, the through holes  22   a  may be broken, thorns may be formed in the electrode plate  22 , and easily hook fluffs mixed in water, so that the fluffs are easily to accumulate on the electrode plate  22 . When the distance between two through holes  22   a  is too large, the utilization rate is relatively low and the number of the through holes  22   a  may be reduced. It should be noted that the distance between adjacent two of through holes  22   a  refers to a distance between a reference through hole and an edge of an adjacent through hole, by taking any one of the through holes as the reference through hole, and taking the through hole of the remaining through holes closest to the reference through hole as the adjacent through hole. 
     The embodiments of the disclosure also provide the laundry treatment device as described above, referring to  FIGS. 4 and 5 , the laundry treatment device includes a cylinder assembly  60  and the electrolysis apparatus  2  of any of the above descriptions. Here the cylinder assembly  60  includes an outer cylinder  61  and an inner cylinder  62  rotationally arranged within the outer cylinder  61 . 
     It may be understood that the inner cylinder  62  as described above may be a perforated inner cylinder or a non-perforated inner cylinder. Responsive to the inner cylinder  62  being the perforated inner cylinder, the outer cylinder  61  is configured to contain water; and responsive to the inner cylinder  62  being the non-perforated inner cylinder, the inner cylinder  62  itself is configured to contain water, that is, the inner cylinder  62  may contain both water and laundries, and during washing, the water in the inner cylinder  62  does not enter the outer cylinder  61 . 
     It should be noted that the position of the electrolysis apparatus  2  in the laundry treatment device is not limited, as long as the water for washing laundries in the laundry treatment device may be electrolyzed. 
     The laundry treatment device according to several specific embodiments will be described in detail below. 
     First Embodiment 
     Referring to  FIG. 4 , according to the laundry treatment device of the first embodiment of the disclosure, the inner cylinder  62  is a perforated inner cylinder, two electrode plates  22  are arranged between the outer cylinder  61  and the inner cylinder  62 , an end, away from the anode plate  222 , of the anode conductive connector  25  is located outside of the outer cylinder  61 , and an end, away from the cathode plate  221 , of the cathode conductive connector  24  is located outside of the outer cylinder  61 . Further, the two electrode plates  22  are arranged on an inner wall, in a height direction, of the outer cylinder  61 . According to the laundry treatment device of the embodiment, the density of the through holes  22   a  in the electrode plates  22  enables the electrode plates  22  to generate more active substances such as .OH, active chlorine and the like on one hand, and fluffs are not easily to block the electrode plates  22  on the other hand. 
     Second Embodiment 
     Referring to  FIG. 5 , the laundry treatment device according to the second embodiment of the disclosure is identical to the first embodiment as described above with respect to most of their structures, except that in the second embodiment, two electrode plates  22  are arranged on a bottom wall, in a height direction, of the outer cylinder  61 , that is, the two electrode plates  22  are arranged at the lowest position of the outer cylinder  61 , therefore even when there is only a small amount of water in the outer cylinder  61 , the electrode plates  22  are still able to contact the water in the outer cylinder  61 . 
     Third Embodiment 
     The laundry treatment device according to the third embodiment of the disclosure is provided with a water inlet channel communicating with the cylinder assembly  60 , and the electrolysis apparatus  2  is arranged on the water inlet channel to electrolyze water in the water inlet channel. According to the laundry treatment device of the third embodiment, the electrolysis apparatus  2  is arranged on the water inlet channel, no additional water pump is used, the electrolysis apparatus  2  may be normally used regardless of presence or absence of water in the outer cylinder  61  or the inner cylinder  62 , and water entering the outer cylinder  61  or the inner cylinder  62  may be electrolyzed. 
     It may be understood that according to the laundry treatment device of the third embodiment, the inner cylinder  62  may be a perforated inner cylinder or a non-perforated inner cylinder. 
     In an embodiment, referring to  FIGS. 12 to 14 , the electrolysis apparatus  2  further includes a shell  21  in which an electrolysis cavity  21   a,  as well as a to-be-electrolyzed water inlet  21   c  and an electrolyzed water outlet  21   d  communicating with the electrolysis cavity  21   a  are formed, and the cathode plate  221  and the anode plate  222  are arranged within the electrolysis cavity  21   a,  and an end, close to the cathode plate  221 , of the cathode conductive connector  24  is located inside of the shell  21 , while an end, away from the cathode plate  221 , of the cathode conductive connector  24  is located outside of the shell  21 , and an end, close to the anode plate  222 , of the anode conductive connector  25  is located inside of the shell  21 , while an end, away from the anode plate  222 , of the anode conductive connector  25  is located outside of the shell  21 , and the electrolysis cavity  21   a  is located in the water inlet channel, that is, water in the water inlet channel may flow through the electrolysis cavity  21   a.    
     When the electrolysis apparatus  2  is assembled, corresponding pipelines may be connected to the to-be-electrolyzed water inlet  21   c  and the electrolyzed water outlet  21   d  respectively, what need to do only is install the electrolysis apparatus  2  in a proper space, and excessive structural changes do not need to be made on the laundry treatment device. 
     In an embodiment, referring to  FIG. 9 , the laundry treatment device includes a water inlet valve  3  and a detergent box  5  provided with a storage tank  5   a  for containing a detergent. The type of the detergent contained in the storage tank  5   a  is not limited, for example, the detergent may be a granular substance such as washing powder or a viscous substance such as liquid laundry detergent, and there is no limitation thereto. The to-be-electrolyzed water inlet  21   c  communicates with the water inlet valve  3 , the electrolyzed water outlet  21   d  communicates with the storage tank  5   a  to guide electrolyzed water within the electrolysis cavity  21   a  to the storage tank  5   a,  exemplarily, the electrolyzed water outlet  21   d  communicates with the storage tank  5   a  through a second pipeline  43 . 
     When the laundry treatment device works, tap water enters the electrolysis cavity  21   a  from the to-be-electrolyzed water inlet  21   c,  the electrolyzed water electrolyzed by the cathode plate  221  and the anode plate  222  contains a lot of microbubbles and .OH, the electrolyzed water enters the storage tank  5   a  and dilutes the detergent stored in the storage tank  5   a,  the microbubbles may accelerate the dissolution of the detergent, and the dissolved detergent enters the outer cylinder  61  or the inner cylinder  62  together with the electrolyzed water; moreover, the electrolysis apparatus  2  is arranged on the water inlet channel, since water in the water inlet channel is tap water, fluffs are not mixed in the water in the water inlet channel, therefore the situation that the fluffs block the electrode plates  22  may be avoided. 
     In an embodiment, the water inlet valve  3  is provided with a water inlet  3   a,  a first water outlet  3   b  and a second water outlet, here the first water outlet  3   b  communicates with the to-be-electrolyzed water inlet  21   c,  exemplarily the first water outlet  3   b  communicates with the to-be-electrolyzed water inlet  21   c  through a first pipeline  4 ; and the second water outlet communicates with the storage tank  5   a,  and the water inlet valve  3  may selectively communicate the water inlet  3   a  with the first water outlet  3   b  or the second water outlet. 
     When sterilization and disinfection need to be carried out through the electrolyzed water, the water inlet  3   a  communicates with the first water outlet  3   b,  tap water enters the electrolysis cavity  21   a  through the water inlet valve  3 , and the electrolyzed water electrolyzed through the cathode plate  221  and the anode plate  222  enters the storage tank  5   a  and finally enters the outer cylinder  61  or the inner cylinder  62 . When sterilization and disinfection are not needed, the water inlet  3   a  communicates with the second water outlet, tap water directly enters the storage tank  5   a  through the water inlet valve  3  and finally enters the outer cylinder or the inner cylinder  62 , that is, in case that sterilization and disinfection are not needed, the tap water directly enters the storage tank  5   a  through the water inlet valve  3  and does not need to pass through the electrolysis cavity  21   a,  therefore, in case that sterilization and disinfection are not needed, a water flowing speed may be accelerated, and the washing time is shortened. 
     In an embodiment, the electrolyzed water outlet  21   d  is located at an end, close to the detergent box  5 , of the shell  21 , and the to-be-electrolyzed water inlet  21   c  is located at an end, away from the electrolyzed water outlet  21   d,  of the shell  21 . In case that the position of the electrolysis apparatus  2  is not changed, the distance between the electrolyzed water outlet  21   d  and the electrolysis cavity  21   a  is smaller than the distance between the to-be-electrolyzed water inlet  21   c  and the electrolysis cavity  21   a,  so that the electrolyzed water in the electrolysis cavity  21   a  may enter the storage tank  5   a  by going through a shorter distance, and microbubbles in the electrolyzed water may accelerate dissolution of the detergent more effectively. 
     The electrolysis apparatus  2  is installed in a proper space in the laundry treatment device. In an embodiment, referring to  FIGS. 8 and 9 , the laundry treatment device includes a workbench  1  which is used as a main body frame at the top of the laundry treatment device and is provided with a laundry feeding opening la facing upward, through which laundries are fed into the inner cylinder  62 . The electrolysis apparatus  2  is fixedly connected to a bottom side of the workbench  1 , i.e., the electrolysis apparatus  2  is located on the side, facing the cylinder assembly  60 , of the workbench  1 . According to the laundry treatment device of the embodiment of the disclosure, the electrolysis apparatus  2  and the workbench  1  are integrated together, so that assembling may be facilitated, and specifically, during assembling, the electrolysis apparatus  2  and the workbench  1  may be assembled into a whole firstly, the workbench  1  is relatively simple in structure and is of an open structure, which facilitates the electrolysis apparatus  2  to be installed therein, and then the workbench  1  and the cylinder assembly  60  are assembled, so that the assembly difficulty may be reduced, the assembly speed may be improved, the production time may be saved, and the production cost may be reduced. Furthermore, space at the bottom side of the workbench  1  is fully utilized through installation of the electrolysis apparatus  2 , therefore the laundry treatment device may be more compact in structure. Moreover, the electrolysis apparatus  2  according to the embodiment of the disclosure does not affect the sealing performance of the outer cylinder  61 , and does not affect the mounting structure of the outer cylinder  61 . 
     In an embodiment, the detergent box  5  is fixedly connected to the bottom side of the workbench  1 . The detergent box  5  may be arranged on any side, along the laundry feeding opening  1   a,  of the workbench  1 , for example, on a rear side or a front side, along the laundry feeding opening  1   a,  of the workbench  1 , or on any transverse side, along the laundry feeding opening  1   a,  of the workbench  1 . In the embodiment of the disclosure, referring to  FIG. 7 , the detergent box  5  is arranged on the rear side, along the laundry feeding opening  1   a,  of the workbench  1 . In general, a water inlet pipe is arranged on a rear side of the laundry treatment device, so that in the embodiment of the disclosure, the detergent box  5  is arranged on the rear side, along the laundry feeding opening  1   a,  of the workbench  1 , a length of the water inlet pipe communicating with the detergent box  5  may be reduced, distribution of the pipe is facilitated, and the workbench  1  may be compact in structure. Furthermore, the rear side and the front side of the workbench  1  generally have large space, the front side of the workbench  1  may facilitate the arrangement of an operation panel so that the operation panel is closer to the user, then the user may use the operation panel more conveniently, thus the detergent box  5  may be arranged on the rear side, along the laundry feeding opening  1   a,  of the workbench  1 . 
     Referring to  FIG. 9 , the workbench  1  is provided with a detergent feeding opening  1   b  penetrating the workbench  1  in a height direction of the laundry treatment deceive, and the detergent box  5  is hermetically arranged around the detergent feeding opening  1   b . When a detergent needs to be fed, the detergent is directly fed into the detergent box  5  from the detergent feeding opening  1   b . It may be understood that in some embodiments, a shield cover may also be arranged at the detergent feeding opening  1   b  to cover the detergent feeding opening  1   b  to prevent debris from entering the detergent box  5 . 
     It should be noted that in the embodiment of the disclosure, the front side, the rear side, or the transverse side, along the laundry feeding opening  1   a , of the workbench  1  is defined by referring to the orientation with the laundry feeding opening  1   a  used as the reference in the projection on a horizontal plane, and taking a paper surface shown in  FIG. 6  as the horizontal plane. 
     The electrode plates  22  and the detergent box  5  are located on different sides, along the laundry feeding opening  1   a , of the workbench  1 , therefore installation space at the bottom side of the workbench  1  may be fully utilized. 
     Specifically, in the embodiment of the disclosure, the electrolysis apparatus  2  is located on the transverse side, along the laundry feeding opening la, of the workbench  1 , that is, in case of reasonable structural distribution and arrangement, the distance between the electrolysis apparatus  2  and the detergent box  5  may be shortened, so that the length of pipelines may be reduced, and the structural arrangement is more reasonable. 
     In an embodiment, two electrode plates  22  both extend in the horizontal plane, referring to  FIG. 14 , the two electrode plates  22  are arranged to be stacked in a vertical direction. Therefore, the size, in the height direction of the laundry treatment device, of the workbench  1  is basically not affected in case that the two electrode plates  22  have large electrolytic surface areas. 
     In an embodiment, referring to  FIG. 13 , the shell  21  is provided with a water outlet  21   f  positioned lower than the electrolyzed water outlet  21   d  and configured to evacuate the water in the electrolysis cavity  21   a.  When the laundry treatment device does not need to use sterilization and disinfection functions, that is, when the electrolysis apparatus  2  does not need to be activated, water in the electrolysis cavity  21   a  may be evacuated through the water outlet  21   f,  therefore the water in the electrolysis cavity  21   a  is prevented from being deteriorated and smelly in case that the laundry treatment device is not used for a long time. 
     It should be noted that water drained from the water outlet  21   f  may be drained to the outside of the laundry treatment device, or may also be directly or indirectly drained into the outer cylinder  61  or the inner cylinder  62 . In the embodiment of the disclosure, referring to  FIG. 8 , the water outlet  21   f  and the electrolyzed water outlet  21   d  are arranged on the same side of the shell  21 , i.e., the water outlet  21   f  is also arranged on the side, close to the detergent box  5 , of the shell  21 ; the water outlet  21   f  communicates with the storage tank  5   a,  exemplarily, the water outlet  21   f  communicates with the storage tank  5   a  through a third pipeline  43 , that is, water drained from the water outlet  21   f  flows to the detergent box  5  through the third pipeline  43 ; and a passage area of the water outlet  21   f  is smaller than a passage area of the electrolyzed water outlet  21   d.  Specifically, the water outlet  21   f  and the electrolyzed water outlet  21   d  are arranged on the same side of the shell  21 , that is, water drained from the water outlet  21   f  is also the electrolyzed water electrolyzed by the electrolysis electrode, and thus it is ensured that water entering the storage tank  5   a  from the water outlet  21   f  is also the electrolyzed water after electrolysis. Furthermore, since the passage area of the water outlet  21   f  is smaller than the passage area of the electrolyzed water outlet  21   d,  a flow resistance of liquid flowing from the electrolyzed water outlet  21   d  to the storage tank  5   a  is smaller than a resistance of the liquid flowing from the water outlet  21   f  to the storage tank  5   a,  so that most of the electrolyzed water may still flow from the electrolyzed water outlet  21   d  to the storage tank  5   a  and a small part of the electrolyzed water may flow from the water outlet  21   f  to the storage tank  5   a.    
     When the electrolyzed water does not need to be used, no water enters the electrolysis cavity  21   a,  a height of a liquid level in the electrolysis cavity  21   a  is reduced, and when the height of the liquid level is lower than a height of the electrolyzed water outlet  21   d,  water in the electrolysis cavity  21   a  is not drained from the electrolyzed water outlet  21   d,  but is drained from the water outlet  21   f  until water in the electrolysis cavity  21   a  is evacuated. In the embodiment of the disclosure, both the electrolyzed water outlet  21   d  and the water outlet  21   f  are arranged as described above, to basically guarantee that water flowing into the storage tank  5   a  is electrolyzed water which is fully electrolyzed, and also to guarantee that water in the electrolysis cavity  21   a  may be evacuated, water in the water outlet  21   f  may be guided into the storage tank  5   a  through a short pipeline only, the structure is simple, a valve is not needed, and thus the production and manufacturing cost may be reduced. 
     In an embodiment, referring to  FIG. 12 , the shell  21  includes a shell body  211 , as well as a first end cover  212  and a second end cover  213  hermetically arranged at two ends, opposite in a length direction, of the shell body  211 , a hollow containing space is enclosed by the shell body  211 , the first end cover  212  and the second end cover  213  together, the electrolysis cavity  21   a  is formed by at least a part of the containing space, the electrolyzed water outlet  21   d  is formed in the first end cover  212 , and the to-be-electrolyzed water inlet  21   c  is formed in the second end cover  213 . It may be understood that at the connection of the first end cover  212  and the shell body  211 , it requires a sealed connection to prevent water leakage, and at the connection of the second end cover  213  and the shell body  211 , it requires a sealed connection to prevent water leakage. 
     The embodiments/implementations provided in the disclosure may be combined with each other without conflict.