A dishwasher
By integrating a membrane electrode unit into the dishwasher, efficient and stable separation and output of acidic and alkaline water are achieved, solving the problems of complex structure and low electrolysis efficiency in existing technologies, and improving cleaning effect and electrolysis efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO MEIGAO KITCHENWARE CO LTD
- Filing Date
- 2026-06-24
- Publication Date
- 2026-08-04
AI Technical Summary
The existing acid and alkaline water preparation modules in dishwashers have complex structures and low electrolysis efficiency, which affects the performance of the dishwasher itself. Furthermore, the mixing of acidic and alkaline water results in low purity and unstable performance.
The membrane electrode unit is integrated into the housing assembly. An ion exchange membrane is provided between each pair of adjacent anode and cathode plates to form a single separation chamber. Acidic and alkaline water are generated and output independently. The water flow distribution is optimized through the fluid channel, and the flow rate is controlled by a flow limiting valve to reduce crossflow and waste.
It achieves high-purity separation and output of acidic and alkaline water with high electrolysis efficiency. The acidic water has a good cleaning and sterilization effect, while the alkaline water has a good degreasing effect, meeting different cleaning needs and reducing assembly difficulty and cost.
Smart Images
Figure CN224584736U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of dishwasher technology, specifically a dishwasher. Background Technology
[0002] With the rapid development of science and technology and the times, there are many scenarios in daily life, public places and industrial production, such as removing pesticide residues from fruits and vegetables, removing oil stains, sterilizing and descaling public places, and cleaning the surface of mechanical equipment parts. In order to enhance the cleaning effect, it is usually necessary to add surfactants.
[0003] However, to reduce processes and improve environmental protection, preparing alkaline or acidic water under specific conditions for cleaning can also achieve comparable results. In the preparation of acidic and alkaline water, electrolysis is an optimized approach feasible for household use.
[0004] Therefore, how to integrate acid and alkaline water preparation modules into cleaning equipment such as dishwashers, and achieve effective and safe preparation of acidic and alkaline water, is a problem that needs to be solved.
[0005] When existing acid-base water preparation modules are applied to dishwashers, they face numerous problems, including complex internal structures, low electrolysis efficiency, and impact on the performance of the dishwasher itself. Utility Model Content
[0006] One of the objectives of this application is to provide a dishwasher that can solve at least one of the defects in the aforementioned background art.
[0007] To achieve the above objectives, this application provides the following technical solution: a dishwasher, comprising an acid-base water preparation module, wherein the acid-base water preparation module includes: The outer shell assembly is provided with a water inlet, a first water outlet and a second water outlet, and a preparation chamber is also provided inside the outer shell assembly; At least one stacked membrane electrode unit is disposed within the preparation chamber; each membrane electrode unit includes a first housing and a second housing connected to each other; The electrode sheet includes an anode sheet and a cathode sheet arranged along a stacking direction, wherein one of the anode sheet and the cathode sheet is sandwiched between a first housing and a second housing, and the other is disposed on the other side of the first housing and / or the second housing; An ion exchange membrane is provided between each pair of adjacent anode and cathode plates. A single separation chamber is formed between two adjacent ion exchange membranes. The separation chamber can be an alkaline chamber or an acidic chamber, and the adjacent separation chambers are distributed in an alternating manner. Each membrane electrode unit is provided with at least a third outlet and an inlet. The first outlet is connected to the third outlet, and the second outlet is connected to the preparation chamber. One of the first outlet and the second outlet is an acidic outlet, and the other is an alkaline outlet. After water enters the inlet interface and is electrolyzed, it is separated into acidic water and alkaline water, which are respectively delivered to the first outlet and the second outlet. The first housing and the second housing are each provided with a fluid channel on the side facing each other, which is used to guide the fluid to flow along the two sides of the cathode plate or anode plate sandwiched between the first housing and the second housing; The fluid channels of the first and second housings form a symmetrical or complementary flow field structure.
[0008] Compared with existing technologies, by integrating the membrane electrode unit into the preparation chamber of the outer shell assembly, the structure is simpler and the layout is more compact. The membrane electrode unit can be flexibly added or removed according to different needs, reducing assembly difficulty and preparation costs. At the same time, a single separation chamber is formed between two adjacent ion exchange membranes, where only alkaline or acidic water is generated. Compared with the traditional acid-alkaline water preparation module where acidic and alkaline water are mixed, this design results in higher purity and more stable performance of the acidic and alkaline water. In addition, the acidic and alkaline waters flow independently through their own channels from generation to discharge, preventing cross-flow within the acid-alkaline water preparation module. This further ensures the quality of the output water, achieving separate output of acidic and alkaline water with high electrolysis efficiency. The acidic water has good cleaning and sterilization effects, while the alkaline water has good degreasing effects. The acidic and alkaline waters can meet the different cleaning needs of dishwashers. Furthermore, by setting up fluid channels, it is possible to ensure that the water flow is more evenly distributed on the electrode surface, avoiding problems such as poor local water flow and insufficient reaction on the electrode surface. This allows the water to flow in parallel, improving electrolysis efficiency and ensuring full contact between the water and the electrode, thus guaranteeing the quality and efficiency of acidic and alkaline water generation.
[0009] Preferably, the inner wall of the outer shell assembly is provided with a docking channel, and the third water outlet is connected to the first water outlet through the docking channel.
[0010] By setting up a docking channel, it is possible to ensure that the acidic or alkaline water generated in the membrane electrode unit can flow directly from the third outlet to the first outlet. The structure is simple, the assembly is more convenient, and the pipeline layout is further optimized to avoid leakage problems caused by messy pipelines.
[0011] Preferably, the first water outlet and the second water outlet are located on the same side of the housing assembly, and the water inlet is located on the other side of the housing assembly.
[0012] The first and second water outlets are located on different sides of the outer casing assembly from the water inlet, which ensures that the water inlet and outlet do not interfere with each other, facilitates the planning and layout of the overall pipeline, and makes it easier to integrate the internal structure of the dishwasher.
[0013] Preferably, when the second outlet is an acidic outlet, the second outlet is equipped with a flow limiting valve, which is used to control the flow rate of the acidic water.
[0014] By setting a flow-limiting valve, acidic water can be trapped in the preparation chamber, slowing down the discharge rate of acidic water and effectively reducing the waste of water resources.
[0015] Preferably, when there are two membrane electrode units, which are the first membrane electrode unit and the second membrane electrode unit respectively, the multiple electrode sheets are arranged vertically from top to bottom as the first anode sheet, the first cathode sheet, the second anode sheet, the second cathode sheet and the third anode sheet; The first anode sheet is disposed at the top of the first membrane electrode unit, the second anode sheet is sandwiched between the first membrane electrode unit and the second membrane electrode unit, and the third anode sheet is disposed at the bottom of the second membrane electrode unit; The first cathode plate is sandwiched between the first housing and the second housing of the first membrane electrode unit, and the second cathode plate is sandwiched between the first housing and the second housing of the second membrane electrode unit. The first outlet is an alkaline outlet, and the second outlet is an acidic outlet.
[0016] The upper and lower surfaces of the second anode plate participate in the electrolytic reaction of the first membrane electrode unit and the second membrane electrode unit, respectively, which effectively improves the utilization rate of electrode materials, reduces the number of electrodes, makes the layout more compact, and reduces costs.
[0017] Preferably, when there are two membrane electrode units, namely the first membrane electrode unit and the second membrane electrode unit, the multiple electrode sheets are arranged vertically from top to bottom as the first cathode sheet, the first anode sheet, the second cathode sheet, the second anode sheet and the third cathode sheet; The first cathode sheet is disposed at the top of the first membrane electrode unit, the second cathode sheet is sandwiched between the first membrane electrode unit and the second membrane electrode unit, and the third cathode sheet is disposed at the bottom of the second membrane electrode unit; The first anode plate is sandwiched between the first housing and the second housing of the first membrane electrode unit, and the second anode plate is sandwiched between the first housing and the second housing of the second membrane electrode unit. The first outlet is an acidic outlet, and the second outlet is an alkaline outlet.
[0018] The upper and lower surfaces of the second cathode sheet participate in the electrolytic reaction of the first and second membrane electrode units, respectively. This can also effectively improve the utilization rate of electrode materials, reduce the overall number of electrodes, further compress the overall volume, make the layout more compact, and reduce the preparation and assembly costs.
[0019] Preferably, the top and bottom of both the first housing and the second housing are provided with brackets for fixing the electrode plates; The bracket consists of multiple protrusions, which are symmetrically arranged along the length and short side of the top surface of the first housing to position the electrode plates.
[0020] By setting up a support, the stability and security of the electrode pads are ensured, preventing them from moving or shaking during use.
[0021] Preferably, a sealing ring is fitted onto the third outlet of the membrane electrode unit; The outer periphery of the first housing and the second housing is provided with mutually cooperating bosses and grooves.
[0022] By setting up bosses and grooves, the installation and disassembly of the first and second housings are facilitated, and the maintenance of the membrane electrode unit is made easier.
[0023] Preferably, it also includes a water softener, with the acid / alkali water preparation module installed on the outlet side of the water softener.
[0024] Water softened by a water softener is then electrolyzed in the acid and alkaline water preparation module. This reduces the adhesion and accumulation of calcium and magnesium ions on the ion exchange membrane surface, prevents the ion exchange membrane from becoming clogged and failing due to scale, extends the service life of the ion exchange membrane, ensures the long-term stable operation of the acid and alkaline water preparation module, and reduces the frequency of equipment maintenance.
[0025] Preferably, it also includes at least one water tank, with the acid-base water preparation module installed on one side of the water tank; The water inlet pump is connected to the water outlet of the water tank, and the water outlet of the water inlet pump is connected to the inner tub of the dishwasher. The water outlet of the inner tub of the dishwasher is connected to the drain pipe of the dishwasher through the drain pump.
[0026] Preferably, it also includes a first water outlet pipe, one end of which is connected to the first water outlet of the acid-base water preparation module, and the other end of which is connected to the water inlet of the water tank; The second water outlet pipe is connected at one end to the second water outlet of the acid-base water preparation module and at the other end to the water inlet of the water tank. The first connecting pipe has one end connected to the water outlet of the water tank and the other end connected to the water inlet of the water pump. The second connecting pipe is connected at one end to the first outlet pipe and at the other end to the drain pipe. The third connecting pipe is connected at one end to the second outlet pipe and at the other end to the drain pipe; The first connecting pipe can be connected to the second connecting pipe and the third connecting pipe through the first branch and the second branch, respectively.
[0027] Preferably, the first water outlet pipe and the second water outlet pipe are respectively equipped with a first reversing valve and a second reversing valve, and the first connecting pipe, the second connecting pipe, the third connecting pipe and the second branch are respectively equipped with a first solenoid valve, a second solenoid valve, a third solenoid valve and a fourth solenoid valve.
[0028] By controlling the opening and closing of different water paths through reversing valves and solenoid valves, water path switching can be achieved, allowing acidic or alkaline water to be drawn into the dishwasher tub as needed to meet the cleaning needs of different stages: alkaline water can be introduced in the pre-wash stage, using its degreasing properties to quickly remove grease from the surface of the tableware; a suitable alkaline water concentration is maintained in the main wash stage to enhance the cleaning effect; and acidic water is introduced in the rinsing and disinfection stage, using its bactericidal properties to disinfect the tableware and improve the safety of the cleanliness. Attached Figure Description
[0029] Figure 1 This is a three-dimensional structural schematic diagram of an acid-base water preparation module provided in an embodiment of this application; Figure 2 This is a side view of an acid-base water preparation module provided in an embodiment of this application. Figure 3 for Figure 2 Schematic diagram of the DD cross-sectional structure; Figure 4 A schematic diagram of the structure of a membrane electrode unit provided in an embodiment of this application. Figure 1 ; Figure 5 A schematic diagram of the structure of a membrane electrode unit provided in an embodiment of this application. Figure 2 ; Figure 6 for Figure 4 A schematic diagram of the AA cross-sectional structure; Figure 7 for Figure 6 A magnified structural diagram of B in the diagram; Figure 8 for Figure 4 Schematic diagram of CC cross-section structure; Figure 9 This is an exploded view of a membrane electrode unit provided in an embodiment of this application; Figure 10 This is a schematic diagram of the structure of the first housing provided in an embodiment of this application; Figure 11 A schematic diagram of the structure of a dishwasher provided in an embodiment of this application. Figure 1 ; Figure 12 A schematic diagram of the structure of a dishwasher provided in an embodiment of this application. Figure 2 .
[0030] In the diagram: 1. Acid / alkali water preparation module; 2. Water tank; 3. Inlet pump; 4. Drain pump; 5. Dishwasher inner tank; 6. Drain pipe; 7. First outlet pipe; 8. Second outlet pipe; 9. Water softener; 11. Housing assembly; 12. Membrane electrode unit; 71. First connecting pipe; 72. Second connecting pipe; 73. Third connecting pipe; 74. First branch; 75. Second branch; 76. First reversing valve; 81. Second reversing valve; 111. Preparation chamber; 112. Water inlet; 113. First water outlet; 114. Second water outlet; 115. Second outer shell; 116. First outer shell; 121. First housing; 122. Second housing; 123. Anode plate; 124. Cathode plate; 125. Third water outlet; 126. Water inlet; 127. Ion exchange membrane; 128. Sealing ring; 711. First solenoid valve; 721. Second solenoid valve; 731. Third solenoid valve; 751. Fourth solenoid valve; 1211, bracket; 1212, manifold; 1213, elongated channel; 1214, connecting groove; 1216, fixing groove; 1221, embedded groove; 1231, first anode plate; 1232, second anode plate; 1233, third anode plate; 1241, first cathode plate; 1242, second cathode plate. Detailed Implementation
[0031] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.
[0032] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.
[0033] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.
[0034] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 12 illustrate.
[0035] This embodiment provides a dishwasher, such as Figures 1 to 12 As shown, the dishwasher includes an acid / alkaline water preparation module 1 and at least one water tank 2. The acid / alkaline water preparation module 1 is installed on one side of the water tank 2. The acid / alkaline water preparation module 1 includes a housing assembly 11 and at least one stacked membrane electrode unit 12. The housing assembly 11 is provided with a water inlet 112, a first water outlet 113 and a second water outlet 114, and a preparation chamber 111 is also provided inside the housing assembly 11. The membrane electrode unit 12 is disposed in the preparation chamber 111. The first water outlet 113 and the second water outlet 114 are located on the same side of the housing assembly 11, and the water inlet 112 is located on the other side of the housing assembly 11. That is, the first water outlet 113 and the second water outlet 114 are disposed on different sides of the housing assembly 11, which can ensure that the water inlet and outlet do not interfere with each other, facilitate the planning and layout of the overall pipeline, and facilitate the internal structural integration of the dishwasher.
[0036] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, each membrane electrode unit 12 includes an electrode sheet, a first housing 121 and a second housing 122 connected to each other. The outer periphery of the first housing 121 and the second housing 122 is provided with mutually cooperating bosses and grooves 1221 to realize the snap-fit connection of the first housing 121 and the second housing 122, which facilitates the installation and disassembly of the first housing 121 and the second housing 122 and facilitates the maintenance of the membrane electrode unit 12. The distance between two adjacent electrode sheets is about 2.5mm.
[0037] The electrode includes an anode plate 123 and a cathode plate 124 arranged along a stacking direction. One of the anode plate 123 and the cathode plate 124 is sandwiched between the first housing 121 and the second housing 122, and the other is disposed on the other side of the first housing 121 and / or the second housing 122. That is, one of the anode plate 123 and the cathode plate 124 is sandwiched between the first housing 121 and the second housing 122, and the other is disposed on the side of the first housing 121 away from one of them and / or the side of the second housing 122 away from one of them. When the cathode plate 123 is located between the first housing 121 and the second housing 122, the anode plate 123 is located on the side of the first housing 121 away from the cathode plate 124 and / or the side of the second housing 122 away from the cathode plate 124. Similarly, when the anode plate 123 is sandwiched between the first housing 121 and the second housing 122, the cathode plate 124 is located on the side of the first housing 121 away from the anode plate 123 and / or the side of the second housing 122 away from the anode plate 123 (outer side). This allows a single membrane electrode unit 12 to share the external electrode plate, reducing the number of electrode plates between adjacent membrane electrode units 12, further simplifying the overall structure and reducing production costs.
[0038] like Figure 6 As shown, an ion exchange membrane 127 is provided between each pair of adjacent anode plates 123 and cathode plates 124. A single separation chamber is formed between two adjacent ion exchange membranes 127. The separation chamber can be either alkaline or acidic, and adjacent separation chambers are interleaved. Both ion exchange membranes 127 are disposed within the membrane electrode unit 12. A separation chamber is formed between the ion exchange membrane 127 and the electrode plates (cathode plate 124 / anode plate 123) outside the first housing 121, and another separation chamber is formed between the ion exchange membrane 127 and the electrode plates (cathode plate 124 / anode plate 123) outside the second housing 122. The two separation chambers generate... Compared to the traditional acid-alkaline water preparation module 1 where acidic and alkaline water are mixed, this method produces acidic or alkaline water with higher purity and more stable results. Furthermore, the acidic and alkaline water flow independently through their own channels from generation to discharge, preventing cross-flow within the acid-alkaline water preparation module 1. This further ensures the quality of the output water, achieving separate output of acidic and alkaline water with high electrolysis efficiency. The acidic water has excellent cleaning and sterilization effects, while the alkaline water has excellent degreasing effects. The acidic and alkaline water can respectively meet the different cleaning needs of the dishwasher.
[0039] like Figure 3 As shown, each membrane electrode unit 12 is provided with at least a third outlet 125 and an inlet 126. The inlet 126 is connected to the inlet interface 112, the first outlet 113 is connected to the third outlet 125, and the second outlet 114 is connected to the preparation chamber 111. One of the first outlet 113 and the second outlet 114 is an acidic outlet, and the other is an alkaline outlet. After water enters the inlet interface 112 and is electrolyzed, it is separated into acidic water and alkaline water, which are respectively delivered to the first outlet 113 and the second outlet 114. When the membrane electrode unit 12 is in operation... When the water electrolyzed in the separation chamber of membrane electrode unit 12 is alkaline, the alkaline water flows from the third outlet 125 to the first outlet 113, while the acidic water naturally collects in the preparation chamber 111 and flows out from the second outlet 114. Conversely, if the water electrolyzed in the separation chamber of membrane electrode unit 12 is acidic, the acidic water flows from the third outlet 125 to the first outlet 113, and the alkaline water naturally collects in the preparation chamber 111 and flows out from the second outlet 114. This ensures independent output of acidic and alkaline water, preventing the two types of water from mixing and affecting the performance. A sealing ring 128 is fitted on the third outlet 125 of membrane electrode unit 12 to achieve a sealed connection between the first housing 121 and the second housing 122.
[0040] Specifically, such as Figure 9As shown, when there are two membrane electrode units 12, namely the first membrane electrode unit and the second membrane electrode unit, multiple electrode plates are arranged vertically from top to bottom as a first anode plate 1231, a first cathode plate 1241, a second anode plate 1232, a second cathode plate 1242, and a third anode plate 1233. The first anode plate 1231 is disposed at the top of the first membrane electrode unit, the second anode plate 1232 is sandwiched between the first membrane electrode unit and the second membrane electrode unit, the third anode plate 1233 is disposed at the bottom of the second membrane electrode unit, and the first cathode plate 1241 is mounted on the first housing 121 of the first membrane electrode unit and the third anode plate 1233. Between the two housings 122, the second cathode plate 1242 is sandwiched between the first housing 121 and the second housing 122 of the second membrane electrode unit. The first outlet 113 is an alkaline outlet and the second outlet 114 is an acidic outlet. The alkaline water generated in the membrane electrode unit flows from the third outlet 125 to the first outlet 113, and the acidic water naturally collects in the preparation chamber 111 and flows out from the second outlet 114. The upper and lower surfaces of the second anode plate 1232 participate in the electrolytic reaction of the first membrane electrode unit and the second membrane electrode unit, respectively, which effectively improves the utilization rate of electrode materials, reduces the number of electrodes, makes the layout more compact, and reduces costs.
[0041] It should be noted that when there are two membrane electrode units 12, namely the first membrane electrode unit and the second membrane electrode unit, the multiple electrode sheets can be arranged vertically from top to bottom as a first cathode sheet 1241, a first anode sheet 1231, a second cathode sheet 1242, a second anode sheet 1232, and a third cathode sheet; the first cathode sheet 1241 is disposed at the top of the first membrane electrode unit, the second cathode sheet 1242 is sandwiched between the first membrane electrode unit and the second membrane electrode unit, and the third cathode sheet is disposed at the bottom of the second membrane electrode unit; the first anode sheet 1231 is mounted between the first housing 121 and the second housing 122 of the first membrane electrode unit, and the second anode sheet 1242 is disposed at the bottom of the second membrane electrode unit; the first anode sheet 1241 is mounted between the first housing 121 and the second housing 122 of the first membrane electrode unit, and the second anode sheet 1242 is disposed between the first housing 1241 and the second housing 1232 of the first membrane electrode unit. Electrode 1232 is sandwiched between the first housing 121 and the second housing 122 of the second membrane electrode unit. The first outlet 113 is an acidic outlet and the second outlet 114 is an alkaline outlet. Acidic water generated in the membrane electrode unit flows from the third outlet 125 to the first outlet 113, while alkaline water naturally collects in the preparation chamber 111 and flows out from the second outlet 114. The upper and lower surfaces of the second cathode 1242 participate in the electrolytic reaction of the first and second membrane electrode units, respectively. This can also effectively improve the utilization rate of electrode materials, reduce the overall number of electrodes, further compress the overall volume, make the layout more compact, and reduce the preparation and assembly costs.
[0042] Furthermore, such as Figure 3As shown, the inner wall of the outer casing assembly 11 is provided with a docking channel. The third outlet 125 is connected to the first outlet 113 through the docking channel, ensuring that the acidic or alkaline water generated in the membrane electrode unit 12 can flow directly from the third outlet 125 to the first outlet 113. The structure is simple, the assembly is more convenient, and the pipeline layout is further optimized to avoid the problem of leakage caused by messy pipelines.
[0043] Furthermore, when the second outlet 114 is an acidic outlet, the second outlet 114 is equipped with a flow limiting valve. The flow limiting valve is used to control the flow rate of the acidic water. When the second outlet 114 is an acidic outlet, the alkaline water generated in the separation chamber in the membrane electrode unit 12 flows from the third outlet 125 to the first outlet 113 and then flows out. The flow limiting valve can trap the acidic water in the preparation chamber 111, slow down the acidic water discharge rate, and effectively reduce the waste of water resources.
[0044] Furthermore, such as Figure 10 As shown, both the first housing 121 and the second housing 122 have fluid channels on the side facing the electrode plate, which are used to guide fluid to flow along the two sides of the cathode plate 124 or anode plate 123 sandwiched between the first housing 121 and the second housing 122. The fluid channels on the first housing 121 and the fluid channels on the second housing 122 form a symmetrical or complementary flow field structure on both sides of the electrode plate, so that the electrolyzed water in the membrane electrode unit 12 becomes an active water flow with a fast flow rate, while the water flow in the preparation chamber 111 is equivalent to a passive water flow, so as to achieve the purpose of having enough electrolyzed water in the membrane electrode unit 12, ensuring that the water flow is more uniformly distributed on the surface of the electrode plate, avoiding the problems of local water flow obstruction and insufficient reaction on the surface of the electrode plate, so that the water flow can flow in parallel, improving the electrolysis efficiency, and ensuring that the water and the electrode plate are in full contact, thus ensuring the quality and efficiency of acid and alkaline water generation.
[0045] The fluid channel includes two confluence channels 1212 connected to the inlet 126 and the third outlet 125 respectively. At least three elongated channels 1213 are spaced apart between the two confluence channels 1212. Each elongated channel 1213 is connected to a confluence channel 1212 via a connecting groove 1214. The cathode plate 124 is located between the two confluence channels 1212. The elongated channels 1213 are arranged along the long side of the first housing 121, and the confluence channels 1212 are arranged along the short side of the first housing 121. The depth of the confluence channels 1212 is greater than that of the elongated channels 1213. The depth of the connecting groove 1214 is less than the depth of the elongated channel 1213, and the width of the elongated channel 1213 is greater than the width of the confluence groove 1212, which in turn is greater than the width of the connecting groove. By setting a reasonable depth and path, when the water enters from the inlet 126, it can flow in parallel, avoiding turbulent water flow and channel blockage in some areas. This ensures that the water can flow uniformly and evenly across the entire electrode surface along the preset channel, resulting in smooth water flow, improved electrolysis efficiency, and further enhanced stability and completeness of the electrolysis reaction.
[0046] Among them, such as Figure 5 As shown, both the top and bottom of the first housing 121 and the second housing 122 are provided with supports 1211 for fixing the electrode sheets, ensuring the stability and secureness of the electrode sheets and preventing them from moving or shaking during use. The supports 1211 consist of multiple protrusions symmetrically arranged along the length and short side of the top surface of the first housing 121, for positioning and supporting the electrode sheets, ensuring accurate installation and preventing misalignment that could affect the electrolysis effect. The structure of the supports 1211 on the first housing 121 is the same as that on the second housing 122, reducing the difficulty of mold making during the production of the membrane electrode unit 12 and further reducing manufacturing costs.
[0047] Each electrode plate has an outwardly extending conductive electrode ear that extends along the width of the electrode plate. The conductive electrode ears of the three anode plates 123 are vertically aligned with each other, and the conductive electrode ears of the two cathode plates 124 are vertically aligned with each other. The conductive electrode ears of the cathode plates 124 and the anode plates 123 do not overlap horizontally, i.e., they are not on the same straight line. Both the first housing 121 and the second housing 122 are provided with fixing grooves 1216 for fixing the conductive electrode ears. The depth of the fixing grooves 1216 is less than the depth of the manifold 1212, ensuring the fixing and positioning of the conductive electrode ears.
[0048] Furthermore, such as Figure 1 , Figure 3As shown, the outer casing assembly 11 includes a first outer casing portion 116 and a second outer casing portion 115. A sealing element is provided between the first outer casing portion 116 and the second outer casing portion 115, and the sealing element is sleeved at the connection between the two. The first outer casing portion 116 and the second outer casing portion 115 are interconnected to form a preparation chamber 111. A first water outlet 113 and a second water outlet 114 are arranged on one side of the first outer casing portion 116, and a water inlet 112 is arranged on the side of the second outer casing portion 115 away from the first outer casing portion 116. The diameter of the hole in the second water outlet 114 is larger than the diameter of the hole in the first water outlet 113. By increasing the diameter of the second water outlet 114, a larger flow rate of alkaline water can be output.
[0049] Furthermore, such as Figure 12 As shown, the dishwasher also includes a water softener 9. The acid-base water preparation module 1 is installed on the outlet side of the water softener 9, that is, the acid-base water preparation module 1 is installed on the rear side of the water softener 9. The water softened by the water softener 9 then enters the acid-base water preparation module 1 for electrolysis, which can reduce the adhesion and accumulation of calcium and magnesium ions in the water on the surface of the ion exchange membrane 127, prevent the ion exchange membrane 127 from being blocked and failing by scale, extend the service life of the ion exchange membrane 127, ensure the long-term stable operation of the acid-base water preparation module 1, and reduce the maintenance frequency of the equipment.
[0050] The dishwasher also includes a water inlet pump 3, a water tank 2, a first water outlet pipe 7, a second water outlet pipe 8, a first connecting pipe 71, a second connecting pipe 72, and a third connecting pipe 73. There is at least one water tank 2, and an acid / alkaline water preparation module 1 is installed on one side of the water tank 2. The water inlet end of the water inlet pump 3 is connected to the water outlet end of the water tank 2, and the water outlet end of the water inlet pump 3 is connected to the dishwasher inner tub 5. The water outlet end of the dishwasher inner tub 5 is connected to the dishwasher drain pipe 6 through a drain pump 4. The water tank 2 is used to store acidic or alkaline water as needed. One end of the first water outlet pipe 7 is connected to the first water outlet 113 of the acid-base water preparation module 1, and the other end is connected to the water inlet of the water tank 2; one end of the second water outlet pipe 8 is connected to the second water outlet 114 of the acid-base water preparation module 1, and the other end is connected to the water inlet of the water tank 2; one end of the first connecting pipe 71 is connected to the water outlet of the water tank 2, and the other end is connected to the water inlet of the water pump 3; one end of the second connecting pipe 72 is connected to the first water outlet pipe 7, and the other end is connected to the drain pipe 6; one end of the third connecting pipe 73 is connected to the second water outlet pipe 8, and the other end is connected to the drain pipe 6; the first connecting pipe 71 can be connected to the second connecting pipe 72 and the third connecting pipe 73 through the first branch 74 and the second branch 75 respectively. The first water outlet pipe 7 and the second water outlet pipe 8 are respectively equipped with a first reversing valve 76 and a second reversing valve 81. The first connecting pipe 71, the second connecting pipe 72, the third connecting pipe 73, and the second branch pipe 75 are respectively equipped with a first solenoid valve 711, a second solenoid valve 721, a third solenoid valve 731, and a fourth solenoid valve 751. The reversing valves and solenoid valves control the opening and closing of different water paths, realizing water path switching. Acidic water or alkaline water can be drawn into the dishwasher inner tank 5 as needed to meet the cleaning needs of different stages: alkaline water can be introduced in the pre-wash stage to quickly remove the oil stains attached to the surface of the tableware by utilizing the degreasing properties of alkaline water; a suitable alkaline water concentration is maintained in the main wash stage to improve the cleaning effect; and acidic water is introduced in the rinsing and disinfection stage to disinfect the tableware by utilizing the bactericidal properties of acidic water to improve the cleaning safety of the tableware.
[0051] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.
Claims
1. A dishwasher, characterized in that Includes an acid-base water preparation module (1), wherein the acid-base water preparation module (1) comprises: The outer shell assembly (11) is provided with a water inlet (112), a first water outlet (113) and a second water outlet (114), and a preparation chamber (111) is also provided inside the outer shell assembly (11). At least one stacked membrane electrode unit (12) is disposed in the preparation chamber (111); each membrane electrode unit (12) includes a first housing (121) and a second housing (122) connected to each other. The electrode includes an anode sheet (123) and a cathode sheet (124) arranged along the stacking direction, one of the anode sheet (123) and the cathode sheet (124) being sandwiched between a first housing (121) and a second housing (122), and the other being disposed on the other side of the first housing (121) and / or the second housing (122); An ion membrane (127) is provided between each pair of adjacent anode plates (123) and cathode plates (124). A single separation chamber is formed between two adjacent ion membranes (127). The separation chamber is either an alkaline chamber or an acidic chamber, and the adjacent separation chambers are distributed in an interleaved manner. Each membrane electrode unit (12) is provided with at least a third outlet (125) and an inlet (126). The first outlet (113) is connected to the third outlet (125), and the second outlet (114) is connected to the preparation chamber (111). One of the first outlet (113) and the second outlet (114) is an acidic outlet, and the other is an alkaline outlet. After the water flows into the inlet (112) and is electrolyzed, it is separated into acidic water and alkaline water, which are respectively delivered to the first outlet (113) and the second outlet (114). The first housing (121) and the second housing (122) are each provided with a fluid channel on the side facing each other, which is used to guide the fluid to flow along the two sides of the cathode plate (124) or anode plate (123) sandwiched between the first housing (121) and the second housing (122); The fluid channels of the first shell (121) and the second shell (122) form a symmetrical or complementary flow field structure.
2. The dishwasher according to claim 1, characterized in that: The inner wall of the outer shell assembly (11) is provided with a docking channel, and the third outlet (125) is connected to the first outlet (113) through the docking channel.
3. The dishwasher according to claim 1, characterized in that: The first water outlet (113) and the second water outlet (114) are located on the same side of the housing assembly (11), and the water inlet (112) is located on the other side of the housing assembly (11).
4. The dishwasher according to claim 1, characterized in that: When the second outlet (114) is an acidic outlet, the second outlet (114) is equipped with a flow limiting valve, which is used to control the flow rate of the acidic water.
5. The dishwasher according to claim 1, characterized in that: When there are two membrane electrode units (12), namely the first membrane electrode unit and the second membrane electrode unit, the multiple electrode sheets are arranged from top to bottom in the vertical direction as the first anode sheet (1231), the first cathode sheet (1241), the second anode sheet (1232), the second cathode sheet (1242), and the third anode sheet (1233). The first anode plate (1231) is disposed on the top of the first membrane electrode unit, the second anode plate (1232) is sandwiched between the first membrane electrode unit and the second membrane electrode unit, and the third anode plate (1233) is disposed at the bottom of the second membrane electrode unit; The first cathode plate (1241) is sandwiched between the first housing (121) and the second housing (122) of the first membrane electrode unit, and the second cathode plate (1242) is sandwiched between the first housing (121) and the second housing (122) of the second membrane electrode unit. The first outlet (113) is an alkaline outlet, and the second outlet (114) is an acidic outlet.
6. The dishwasher according to claim 1, characterized in that: When there are two membrane electrode units (12), which are the first membrane electrode unit and the second membrane electrode unit respectively, multiple electrode sheets are arranged vertically from top to bottom as the first cathode sheet (1241), the first anode sheet (1231), the second cathode sheet (1242), the second anode sheet (1232) and the third cathode sheet; The first cathode sheet (1241) is disposed on the top of the first membrane electrode unit, the second cathode sheet (1242) is sandwiched between the first membrane electrode unit and the second membrane electrode unit, and the third cathode sheet is disposed at the bottom of the second membrane electrode unit; The first anode plate (1231) is sandwiched between the first housing (121) and the second housing (122) of the first membrane electrode unit, and the second anode plate (1232) is sandwiched between the first housing (121) and the second housing (122) of the second membrane electrode unit. The first outlet (113) is an acidic outlet, and the second outlet (114) is an alkaline outlet.
7. The dishwasher according to claim 1, characterized in that: The first housing (121) and the second housing (122) are each provided with a bracket (1211) for fixing the electrode sheet at the top and bottom. The bracket (1211) consists of multiple protrusions, which are symmetrically arranged along the length and short side of the top surface of the first housing (121) to position the electrode sheet.
8. The dishwasher according to claim 1, characterized in that: A sealing ring (128) is fitted on the third outlet (125) of the membrane electrode unit (12). The outer periphery of the first housing (121) and the second housing (122) is provided with mutually cooperating bosses and grooves (1221). 9.The dish washer of claim 1, wherein Also includes: A water softener (9) and an acid / alkali water preparation module (1) are installed on the outlet side of the water softener (9). 10.The dish washer of claim 1, wherein Also includes: At least one water tank (2), and an acid-base water preparation module (1) is installed on one side of the water tank (2); The water inlet pump (3) is connected to the water outlet of the water tank (2), and the water outlet of the water inlet pump (3) is connected to the inner tub (5) of the dishwasher. The water outlet of the inner tub (5) of the dishwasher is connected to the drain pipe (6) of the dishwasher through the drain pump (4). 11.The dish washer of claim 10, wherein Also includes: The first water outlet pipe (7) is connected at one end to the first water outlet (113) of the acid-base water preparation module (1) and at the other end to the water inlet of the water tank (2); The second water outlet pipe (8) is connected at one end to the second water outlet (114) of the acid-base water preparation module (1) and at the other end to the water inlet of the water tank (2); The first connecting pipe (71) is connected at one end to the outlet of the water tank (2) and at the other end to the inlet of the water pump (3); The second connecting pipe (72) is connected at one end to the first water outlet pipe (7) and at the other end to the drain pipe (6); The third connecting pipe (73) is connected at one end to the second outlet pipe (8) and at the other end to the drain pipe (6); The first connecting pipe (71) can be connected to the second connecting pipe (72) and the third connecting pipe (73) through the first branch (74) and the second branch (75) respectively.
12. The dishwasher according to claim 11, characterized in that: The first water outlet pipe (7) and the second water outlet pipe (8) are respectively equipped with a first reversing valve (76) and a second reversing valve (81), and the first connecting pipe (71), the second connecting pipe (72), the third connecting pipe (73) and the second branch (75) are respectively equipped with a first solenoid valve (711), a second solenoid valve (721), a third solenoid valve (731) and a fourth solenoid valve (751).