Water inlet system of washing equipment and washing equipment

Abstract

The invention discloses a water inlet system of washing equipment and the washing equipment, and the water inlet system comprises a first water inlet waterway which is used for conveying bubble water into a washing cavity; the first water inlet waterway is provided with a first water inlet pipe provided with a bubbler and an air guide pipe used for conveying air into the first water inlet pipe, and the air guide pipe is located on the rear side of the bubbler; the washing machine further comprises a ventilation pipe connected between the air guide pipe and the detergent box, and the ventilation pipe, the air guide pipe and the first water inlet pipe form a ventilation channel for communicating the washing cavity with the outside. After the first water inlet waterway is closed, water in the first water inlet pipe located on the rear side of the air guide pipe flows into a washing cavity; when the washing equipment drains water, the air pressure in the washing cavity is reduced, so that external air flows through the ventilation channel and then enters the washing cavity, an air drying effect is achieved on the first water inlet pipe located in the ventilation channel, water adhering to the pipe wall and the filter screen is evaporated, and formation of scale is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and particularly relates to a water inlet system of a washing equipment and a washing equipment having the water inlet system. Background Art

[0002] During the use of a washing machine, lint often adheres to the window gasket and window glass of the observation window. If not cleaned in time, it will block the line of sight and also mildew and produce peculiar smells. Rinsing with foamed water can effectively solve the problem of lint adhesion. At the same time, when the bubbles burst, instantaneous high temperature and high pressure will be generated, which also has an effect on peeling off stains on clothes. Therefore, many washing machines will inject bubble water during washing.

[0003] For example, a multi-stage microbubble washing machine disclosed in Patent CN 202210524458.1 includes: a first bubble generating device and at least one second bubble generating device provided in the water path of the washing machine; wherein, the first bubble generating device includes a pipe body and a bubbler, and a flow path is formed by enclosing the pipe body and the bubbler. When the washing water flows through the flow path, pressure is released to form bubble water; the second bubble generating device is a controlled device for mixing gas into the water path to generate microbubbles; the second bubble generating device is located at the rear end of the first bubble generating device; when the second bubble generating device is controlled to be opened or closed, through the combined action of the first bubble generating device and the second bubble generating device, bubble water with different bubble pore diameters can be formed.

[0004] In the water path of the above patent, after the water inlet is completed, residual water will remain in the filter screen part of the bubbler, resulting in water absorbing carbon dioxide in the air and reacting with calcium and magnesium ions to form calcium carbonate and magnesium carbonate precipitates, that is, scale is formed. When the bubbler is used for more than a certain period of time, the bubbler is easily affected by sediment and scale, causing blockage and resulting in the failure of the bubbling function. The accumulation of sediment can be cleaned by disassembling, but it is very inconvenient to clean after the scale is deposited.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0006] In view of the above problems in the prior art, the present invention provides a water inlet system of a washing equipment, by providing a ventilation passage, to ensure the drying of the bubbler after the washing equipment finishes washing, and to avoid the formation of scale.

[0007] To achieve the above invention object, the present invention adopts the following technical solutions: A water inlet system of a washing equipment, comprising: [[ID=!]] A first water inlet water path for transporting bubble water to the washing cavity; The first water inlet waterway has: a first water inlet pipe provided with a bubbler, and an air guide pipe for delivering air into the first water inlet pipe, the air guide pipe being located at the rear side of the bubbler; It further includes a ventilation pipe connected between the air guide pipe and the detergent box, and the ventilation pipe, the air guide pipe and the first water inlet pipe form a ventilation path for the washing cavity to communicate with the outside.

[0008] In some embodiments of the present application, when the washing device drains water, external air enters the washing tub through the ventilation path, and the water adhering to the inside of the bubbler can be air-dried.

[0009] In some embodiments of the present application, it further includes: A second water inlet waterway for delivering the water flow flowing through the detergent box into the washing cavity; A water inlet valve having a first valve for controlling the opening and closing of the first water inlet waterway and a second valve for controlling the opening and closing of the second water inlet waterway, The first valve and the second valve are opened at staggered times.

[0010] In some embodiments of the present application, the second water inlet waterway has: A second water inlet pipe; A detergent box connected to the water outlet end of the second water inlet pipe; A water inlet elbow, the upper end of which is connected to the detergent box and the lower end of which is connected to the washing cavity; After the water inlet of the second water inlet waterway ends, a water seal for sealing the water inlet elbow is formed in the water inlet elbow.

[0011] In some embodiments of the present application, the first water inlet waterway and the second water inlet waterway are opened at staggered times; the water inlet control method of the first water inlet waterway includes the following steps: S11 **0**. Open the first water inlet waterway, and water flows into the washing cavity, so that the air pressure in the washing cavity increases; S12 **0**. When the air pressure in the washing cavity is greater than the sum of the external atmospheric pressure and the pressure generated by the water seal, part of the gas in the washing cavity can break through the water seal and flow through the detergent box and be released to the outside.

[0012] In some embodiments of the present application, the water inlet control method of the first water inlet waterway further includes: S13 **0**. When it is detected that part of the gas in the washing cavity breaks through the water seal, control the first water inlet waterway to close; the water located in the first water inlet waterway flows into the washing cavity, and the washing cavity communicates with the outside through the ventilation path.

[0013] In some embodiments of the present application, the washing device includes a water level sensor arranged based on the air pressure principle, and the water level sensor is used to detect the water level in the washing cavity; when a part of the gas in the washing cavity breaks through the water seal, a sharp drop in the feedback value of the water level sensor is detected.

[0014] In some embodiments of the present application, S140. After detecting that the washing cavity is in communication with the outside, control enters step S110 until the water level in the washing cavity reaches the required water level.

[0015] In some embodiments of the present application, after the washing cavity is in communication with the outside, the feedback value of the water level sensor is stable.

[0016] In some embodiments of the present application, the first water inlet waterway and the second water inlet waterway are opened at staggered times; the water inlet control method of the first water inlet waterway includes the following steps: S210. Open the first water inlet waterway, and water flows into the washing cavity, increasing the air pressure in the washing cavity; S220. After the first water inlet waterway is opened for a set time t, control the first water inlet waterway to close; the water in the first water inlet waterway flows into the washing cavity, and the washing cavity is in communication with the outside through the air permeation passage; S230. After detecting that the washing cavity is in communication with the outside, repeatedly execute steps S210 - S230 until the water level in the washing cavity reaches the required water level.

[0017] In some embodiments of the present application, the set time for the first opening of the first water inlet waterway is t1, the set time for the second opening is t2,..., and the set time for the nth opening is tn, and the opening time of the first water inlet waterway gradually decreases from t1 to tn.

[0018] In some embodiments of the present application, the air inlet of the air guide pipe is located outside the water inlet pipe, the air outlet of the air guide pipe is located inside the water inlet pipe, and the air outlet direction of the air outlet is consistent with the water inlet direction of the water inlet pipe.

[0019] In some embodiments of the present application, the first water inlet pipe has a first main water inlet pipe, a jet pipe connected to the first main water inlet pipe, a bubbler connected to the jet pipe, and a filter screen is arranged in the bubbler.

[0020] In some embodiments of the present application, a jet nozzle that gradually narrows along the water outlet direction is arranged in the jet pipe, the diameter of the jet pipe matches the diameter of the water inlet pipe, and the jet nozzle is used to increase the solubility of bubbles in water and the water flow rate; In some embodiments of the present application, an installation hole is formed in the pipe wall of the first water inlet pipe, and the air guide pipe is fixedly connected to the first water inlet pipe through the installation hole. In some embodiments, a boss is provided on the pipe wall of the first water inlet pipe, the installation hole is a stepped hole, and the stepped hole penetrates through the boss; the air guide pipe is tightly connected to the boss, and a gasket is provided between the air guide pipe and the stepped hole.

[0021] In some embodiments, the first water inlet pipe includes a first main water inlet pipe and a joint pipe detachably connected to the first main water inlet pipe, and the installation hole is provided on the joint pipe.

[0022] In some embodiments, the filter screen is inclined in the bubbler. Optionally, the range of the angle between the filter screen and the water flow direction of the bubbler is 5° to 60°.

[0023] In some embodiments, a stepped groove is provided on the inner wall of the bubbler, and the filter screen is inclined and clamped on the stepped groove; the jet pipe is inserted into the bubbler, and a limiting member is embedded between the end of the jet pipe and the filter screen.

[0024] In some embodiments, a sand discharge hole is provided at the downstream position of the filter screen along the water flow direction.

[0025] In some embodiments, the jet pipe is detachably connected to the water inlet pipe, and the bubbler is detachably connected to the jet pipe.

[0026] Based on the above water inlet system of a washing device, the present invention further provides a washing device having the above water inlet system. By providing a ventilation path, it is ensured that after the washing device finishes washing, the bubbler is dried, avoiding the formation of water scale.

[0027] A washing device includes a washing cavity, a detergent box, and the above water inlet system.

[0028] Compared with the prior art, the advantages and positive effects of the present invention are: by providing an air guide pipe, when the first water inlet waterway is inletting water, the outside air can be inhaled into the first water inlet pipe; and after the first water inlet waterway is closed, since the first water inlet pipe is communicated with the outside air through the air guide pipe and the ventilation pipe, the water in the first water inlet pipe behind the air guide pipe flows into the washing cavity; but there will be water droplets attached to the inner wall, especially the filter screen in the bubbler will be attached with water droplets and water films; when the washing device drains water, the air pressure in the washing cavity decreases, so that the outside air flows through the ventilation path and then enters the washing cavity, playing a role in air-drying the first water inlet pipe located in the ventilation path, so that the water adhered to the pipe wall and the filter screen evaporates, avoiding the formation of water scale.

[0029] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 is a schematic structural diagram of an embodiment of a water inlet system of a washing device proposed by the present invention; Figure 2 is a curve of time and air pressure in the washing cavity in the first water inlet control method of the first water inlet waterway; Figure 3 is a curve of time and air pressure in the washing cavity in the second water inlet control method of the first water inlet waterway; Figure 4 is a schematic flow chart of the second water inlet control method of the first water inlet waterway; Figure 5 is a schematic flow chart of the third water inlet control method of the first water inlet waterway; Figure 6 For Figure 1 is a schematic diagram of a part of the structure in the first water inlet waterway in Figure 7 is a schematic internal structure diagram of an air guide pipe and a joint pipe; Figure 8 For Figure 7 is a sectional view taken along the A-A direction of the structure in Figure 9 is a schematic internal structure diagram of a jet pipe and a foaming pipe.. SPECIFIC EMBODIMENTS

[0032] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the positional relationship shown in the drawings. The direction close to the axis of the inner cylinder is "inner", and vice versa is "outer". These terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0034] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0037] See Figures 1-9, which is an embodiment of the water inlet system of a washing device proposed by the present invention. A water inlet system of a washing device includes: a first water inlet waterway and an air vent pipe 600 for delivering bubble water into the washing cavity 700; the first water inlet waterway has a first water inlet pipe and a gas guide pipe 420. A bubbler 100 is provided on the first water inlet pipe. The gas guide pipe 420 is used to deliver air into the first water inlet pipe, and the gas guide pipe 420 is located behind the bubbler 100. The direction of water flow in the first water inlet pipe is forward, and vice versa. That is, the water flow in the first water inlet pipe first flows through the air outlet of the gas guide pipe 420, and the outside air enters the first water inlet pipe through the gas guide pipe 420 and flows forward with the water flow. Then it reaches the bubbler 100, making the air carried in the water flow become microbubbles, and the water delivered by the first water inlet pipe becomes microbubble water.

[0038] In this embodiment, the air vent pipe 420 is connected between the gas guide pipe 420 and the detergent box 1. The air vent pipe 600, the gas guide pipe 420, and the first water inlet pipe form a breathable passage for the washing cavity 700 to communicate with the outside. When the first water inlet waterway is in the open state, the high-speed water flow flows through the air outlet of the gas guide pipe 420. Under the action of negative pressure, the air in the detergent box 1 enters the first water inlet pipe through the air vent pipe 600 and the gas guide pipe 420; even when the water outlet of the first water inlet waterway is accidentally blocked, when the water flow flows out through the gas guide pipe 420, the water flow also enters the detergent box 1. After the first water inlet waterway is closed, since the first water inlet pipe is communicated with the outside air through the gas guide pipe 420 and the air vent pipe 600, the water in the first water inlet pipe located in front of the gas guide pipe 420 flows into the washing cavity 700; but there will be water droplets attached to the inner wall of the first water inlet pipe, especially the filter screen 120 in the bubbler 100 will be attached with water droplets and water films; then when the washing device drains water, the washing water in the washing cavity 700 is discharged, making the air pressure in the washing cavity 700 decrease. The outside air flows through the breathable passage into the washing cavity 700, which plays a role in air-drying the inside of the first water inlet pipe located in the breathable passage, making the water adhered to the pipe wall and the filter screen 120 evaporate, avoiding the formation of water scale. The drainage of the washing device includes emptying and spin-drying, which is used to spin-dry the washing water in the washing cavity and the water adsorbed on the clothes. By setting the breathable passage, the breathable holes provided at the top of the outer cylinder can be saved.

[0039] In this embodiment, the washing device is a washing machine; the washing device has a box body, a door body 3 is provided on the front panel of the box body, and an inner cylinder and an outer cylinder 6 are provided in the box body in a nested manner. The outer cylinder 6 surrounds and forms a washing cavity, and the washing water is placed in the outer cylinder 6. In other embodiments, the washing device can also be a shoe washing machine or other devices for washing.

[0040] In some embodiments of the present application, the water inlet system further includes: a second water inlet waterway and a water inlet valve 500. The second water inlet waterway is used to convey the water flowing through the detergent box 1 into the washing cavity 700. The water inlet valve 500 has a first valve for controlling the opening and closing of the first water inlet waterway and a second valve for controlling the opening and closing of the second water inlet waterway, and the first valve and the second valve are opened at staggered times. The first water inlet waterway and the second water inlet waterway do not intake water simultaneously; such that when one water inlet waterway is intaking water, the other water inlet waterway can be used to discharge the gas in the washing cavity to the outside.

[0041] In some embodiments of the present application, the second water inlet waterway has: a second water inlet pipe 800, a detergent box 1, and a water inlet elbow 2. The detergent box 1 is connected to the water outlet end of the second water inlet pipe 800. The upper end of the water inlet elbow 2 is connected to the detergent box 1, and the lower end is connected to the washing cavity 700; after the water intake of the second water inlet waterway ends, a section of water will remain in the water inlet elbow 2, forming a water seal for sealing the water inlet elbow 2. By setting the water seal, the washing cavity 700 is in communication with the outside through the air permeation path in the state where the first water inlet waterway is not intaking water. Especially in the case of the washing equipment draining water, air drying of the first water inlet pipe is achieved.

[0042] The water intake of the first water inlet waterway is described below. The first water inlet waterway and the second water inlet waterway are opened at staggered times, that is, they are not opened simultaneously. When the first water inlet waterway is opened, the second water inlet waterway is closed, that is, the second valve is closed; since there is a water inlet elbow 2 connected to the outer cylinder 6 in the second water inlet waterway, a water seal is achieved. When the first water inlet waterway is opened, that is, the first valve is opened, water flows into the washing cavity 700 through the first waterway. As the air pressure inside the washing cavity 700 increases, the water intake rate will slow down, and at the same time, due to the pressure increase, the foaming effect becomes worse. When the air pressure in the washing cavity 700 reaches a certain level, the air pressure will break through the water seal at the water inlet elbow 2, leaking part of the air.

[0043] I. The first control method for the water intake of the first water inlet waterway includes the following steps: S110. Open the first water inlet waterway, and water flows into the washing cavity 700, causing the air pressure in the washing cavity 700 to increase; S120. When the air pressure in the washing cavity 700 is greater than the sum of the external atmospheric pressure and the pressure generated by the water seal, part of the gas in the washing cavity 700 can break through the water seal and flow through the detergent box 1 to be released to the outside.

[0044] In this way, part of the air breaks through the water seal at the water inlet elbow 2 and leaks, which will cause the air pressure in the washing cavity 700 to decrease, facilitating continuous water intake.

[0045] II. Refer to Figure 4 As shown, the second control method for the water intake of the first water inlet waterway includes the following steps: S110. Open the first water inlet waterway, and water flows into the washing cavity 700, increasing the air pressure in the washing cavity 700; S120. When the air pressure in the washing cavity 700 is greater than the sum of the external atmospheric pressure and the pressure generated by the water seal, part of the gas in the washing cavity 700 can break through the water seal, flow through the detergent box 1 and be released to the outside.

[0046] In this way, part of the air breaks through the water seal at the water inlet elbow 2 and leaks, which will reduce the air pressure in the washing cavity 700 and is beneficial to continuous water inlet.

[0047] In some embodiments of the present application, in step S120, part of the gas in the washing cavity 700 leaks, and the air pressure in the washing cavity 700 decreases, but the air pressure in the washing cavity 700 is still higher than the external atmospheric pressure. The water inlet control method for setting the first water inlet waterway further includes: S130. When it is detected that part of the gas in the washing cavity 700 breaks through the water seal, control the first water inlet waterway to close; the water in the first water inlet waterway flows into the washing cavity 700, and the washing cavity 700 is communicated with the outside through the air permeable passage.

[0048] Specifically, when the first water inlet waterway is closed, due to the existence of the air vent pipe 600 and the air guide pipe 420, the air outlet of the air guide pipe 420 in the first water inlet pipe is communicated with the outside, so that the water in the first water inlet pipe in front of the air outlet of the air guide pipe 420 flows into the washing cavity 700, and the washing cavity 700 is communicated with the outside through the air permeable passage.

[0049] For the method of monitoring that part of the gas in the washing cavity 700 breaks through the water seal, a pressure sensor can be set in the washing cavity 700; a vibration sensor can also be set at the water seal; or the water level sensor 8 of the washing equipment can be directly used. The water level sensor 8 is set based on the air pressure principle and is used to detect the water level in the washing cavity 700; the water level sensor 8 is connected to the drain pipe 5 through the connecting pipe 81. The air in the connecting pipe 81 is sealed. When the water level rises, the air pressure inside the connecting pipe 81 increases and will be detected by the water level sensor 8. In step S120, when part of the gas in the washing cavity 700 breaks through the water seal, a sharp drop in the feedback value of the water level sensor 8 will be detected. That is, when a sharp drop in the feedback value of the water level sensor 8 is detected, step S130 is entered to control the first water inlet waterway to close.

[0050] See Figure 2 and Figure 3The curve c shown is the curve of the change in the water inlet time and the feedback value of the water level sensor 8 under the condition that the water inlet flow rate of the first water inlet waterway remains unchanged, and the washing device is provided with air vents, and the air pressure inside and outside the washing cavity 700 is always balanced. Since the bottom of the outer cylinder 6 is narrow, the water level in the outer cylinder 6 will rise a certain distance not long after the water inlet volume increases, and the water level in the outer cylinder 6 becomes wider and wider upwards (the maximum water level does not exceed the horizontal diameter line of the outer cylinder). Therefore, as the water inlet time increases, the water level rising speed becomes lower and lower, and the corresponding air pressure increase value becomes smaller and smaller. At the initial position, since the connecting pipe 81 of the water level sensor 8 is connected to the drain pipe 5 with a very small diameter, the time and the water level air pressure increase almost proportionally, and then become smaller and smaller, which can be understood as the acceleration of the air pressure becoming smaller and smaller.

[0051] See Figure 2 and Figure 3 The curve a shown is the curve of the water inlet duration and the air pressure increase when other places of the outer cylinder 6 except the water inlet are completely sealed. Because the gas cannot be discharged during water inlet, the air in the space without water inside is also compressed, generating a positive air pressure. This air pressure also acts on the water level sensor through the water that has been injected inside, and the manifestation in the reading is that although the air pressure rising speed also decreases as the water inlet time increases, it is significantly higher than the situation when there are air vents. That is to say, at this time, the acceleration of the air pressure increase is greater than the air pressure acceleration during water inlet with air pressure balance.

[0052] See Figure 2 The curve b shown is the curve of time and air pressure of the first water inlet control method of the first water inlet waterway. The height of the water seal at the water inlet elbow 2 is not large. When the air pressure in the washing cavity 700 reaches a certain level, the water seal will be broken through, releasing some air, and then re-sealing; continue to accumulate pressure with the water inlet. At the moment t1, the gas in the washing cavity 700 breaks through the water sealing the water inlet elbow 2, and part of the gas leaks instantaneously, and the pressure drops, and then re-seals, and the pressure continues to increase. Since there is no real-time air vent, the pressure does not drop to the corresponding point of the c curve. Before the first air leakage at the water inlet elbow 2, the b curve coincides with the a curve, because before venting through the water inlet elbow 2, it is equivalent to the entire washing cavity 700 having no air vents. Therefore, the bubbler 120 always bears a certain pressure during water inlet, so the water inlet speed is slightly slower, the foam becomes less, and most importantly, there is an error in measuring the water level, which will cause the actual water level to be insufficient and affect the washing effect.

[0053] See Figure 3The d-line shown is the curve of time and air pressure for the second water inlet control method of the first water inlet waterway. When the air pressure sensor 8 detects a drop in air pressure, for example, at time t1, due to air bubbles leaking from the water inlet elbow 2, the air pressure sensor 8 will detect a sharp drop in the internal air pressure, and at this moment, the first valve is immediately closed; due to the existence of the vent pipe 600 and the air guide pipe 420, the water in the first water inlet pipe will quickly flow into the washing cavity 700. The pressurized gas that has not been released in the washing cavity 700 will leak through the route of the air permeable path, so that the gas pressure in the washing cavity 700 is completely consistent with the external atmospheric pressure. Since the air pressure in the outer cylinder increases before the gas leaks, the water inlet becomes slightly slower. After complete pressure relief, the reading obtained by the air pressure sensor will be slightly lower than the reading in the completely air pressure balanced state.

[0054] In some embodiments of the present application, the control method for the water inlet of the first water inlet waterway further includes, in S140, after detecting that the washing cavity 700 is in communication with the outside, controlling to enter step S110 until the water level in the washing cavity reaches the required water level.

[0055] Specifically, when the feedback value of the water level sensor 8 is detected to drop sharply, the first water inlet waterway is controlled to close; after the washing cavity 700 is in communication with the outside, the gas pressure in the washing cavity 700 is completely consistent with the external atmospheric pressure, and the feedback value of the water level sensor 8 stops dropping after dropping to be consistent with the external atmospheric pressure; that is, after the washing cavity 700 is in communication with the outside, the feedback value of the water level sensor 8 is stable; in step S140, when it is detected that the feedback value of the water level sensor 8 is stable, it indicates that the washing cavity 700 is in communication with the outside.

[0056] III. Refer to Figure 5 As shown, the third control method for the water inlet of the first water inlet waterway includes the following steps: S210. Open the first water inlet waterway, and water flows into the washing cavity 700, so that the air pressure in the washing cavity 700 increases; S220. After the first water inlet waterway is opened for a set time t, control the first water inlet waterway to close; the water in the first water inlet waterway flows into the washing cavity 700, and the washing cavity 700 is in communication with the outside through the air permeable path; Specifically, before the gas in the washing cavity 700 can break through the water seal, control the first water inlet waterway to close; due to the existence of the vent pipe 600 and the air guide pipe 420, the air outlet of the inner air guide pipe 420 in the first water inlet pipe is in communication with the outside, so that the water in the first water inlet pipe in front of the air outlet of the air guide pipe 420 flows into the washing cavity 700, and the washing cavity 700 is in communication with the outside through the air permeable path.

[0057] S230. After detecting that the washing cavity 700 is in communication with the outside, repeat steps S210 to S230 until the water level in the washing cavity 700 reaches the required water level.

[0058] In some embodiments of the present application, the time points when the first water inlet waterway stops after the first opening are set as t1, the time points when it stops after the second opening are set as t2, ……, the time points when it stops after the nth opening are set as tn, and the opening durations of the first water inlet waterway decrease in sequence from the first time to the nth time, that is, t1 > t2 - t1 > …… > tn - tn-1.

[0059] See Figures 6-9 , which illustrates the structure of the first water inlet waterway. Installation holes are formed in the pipe wall of the first water inlet pipe, and the air guide pipe 420 is fixedly connected to the first water inlet pipe through the installation holes. The air inlet of the air guide pipe 420 is located outside the first water inlet pipe, and the air outlet of the air guide pipe 420 is located inside the first water inlet pipe, and the air outlet direction of the air outlet is consistent with the water inlet direction of the first water inlet pipe. When water flows from the Figure 4 right side to the left side shown, a negative pressure will be generated at the air outlet of the air guide pipe 420 located inside the first water inlet pipe, and external air will be introduced into the first water inlet pipe through the ventilation pipe 600 and the air guide pipe 420. During the flow of water, air will be wrapped and mixed in the water, thereby generating bubbles in the water flow and increasing the air solubility in the water flow.

[0060] The first water inlet pipe has a first main water inlet pipe 300, a jet pipe 200 connected to the first main water inlet pipe 300, and a bubbler 100 connected to the jet pipe 200. A filter screen 120 is arranged inside the bubbler 100. The jet pipe 200 can play a role in pressurizing and accelerating the water flow. In addition, the water flow also has an accelerating effect after mixing with air. This is because during the flow of water, the kinetic energy of each unit length of the water flow is fixed. When air bubbles are mixed into the water, it is equivalent to the density of this part of the water flow decreasing, resulting in an increase in the water flow velocity and an increase in the jet distance.

[0061] The jet pipe 200 is connected to the water outlet of the first main water inlet pipe 300. The pipe diameter of the jet pipe 200 matches the pipe diameter of the first main water inlet pipe 300. A jet nozzle 220 that gradually narrows along the water outlet direction is arranged inside the jet pipe 200. The jet nozzle 220 is used to increase the solubility of the bubbles introduced by the air guide pipe 420 in the water and the water flow velocity.

[0062] As Figure 9As shown in the figure, when the water flow passes through the jet nozzle 220 in the jet pipe 200, the jet nozzle 220 can compress the water flow and increase the pressure of the water flow. While increasing the pressure, the gas solubility of the water will further increase. The air entering through the air duct 420 and the bubbles that have not been dissolved in the water are pressurized together with the water, which will further increase the dissolution amount of air in the water. After the jet pipe 200 compresses the water flow, the flow velocity of the outflowing water increases. Then, after passing through the filter screen 120 in the bubbler 100, the passing water flow is blocked at multiple points, and the pressure drops sharply behind the blocking points, causing the gas dissolved in the water to be released in the form of bubbles, thus forming microbubble water.

[0063] Specifically, after the water flow passes through the obstacle, the pressure behind the obstacle decreases, and the gas dissolved in the water will quickly overflow. Due to the surface tension of water molecules, the water molecules surround the gas to form bubbles. That is to say, the lower the pressure behind the obstacle compared to that in front of the obstacle, the more bubbles will overflow. In addition, the more gas dissolved in the water, the more will precipitate, and the higher the pressure, the easier it is for the gas to dissolve in the water. Therefore, the present invention uses the air duct 420 to introduce gas into the water inlet pipe, allows the gas to dissolve in the water naturally in a relatively long pipeline, and then pressurizes it through the jet pipe 200 to make more gas dissolve in the water. After the pressurized water flow becomes faster, when it encounters the filter screen 120 in the bubbler 100, the pressure difference between the two sides of the filter screen 120 in the water flow direction is greater, making it easier for the gas to overflow and form bubbles.

[0064] When the water intake in the first water intake waterway stops, since the air inlet of the air duct 420 is an open structure and communicates with the atmosphere, and the water flow in the water inlet pipe remains unchanged in terms of flow direction and kinetic energy and will continue to flow forward in the original state. Therefore, under the action of atmospheric pressure, the water in the first water inlet pipe will quickly flow out and will not accumulate in the first water inlet pipe, avoiding the formation of scale deposits and affecting the subsequent generation effect of microbubble water. Otherwise, if there is no air duct 420 in the first water inlet pipe, when the first valve is closed and the water intake stops, since the rear end of the first water inlet pipe is closed, a negative pressure will be generated behind the water flow in the first water inlet pipe when the water flow moves forward, so that the forward-flowing water flow will be held back and unable to continue flowing forward. Due to the surface tension of water molecules and the relatively small diameter of the water inlet pipe, it is difficult for air to enter from the bubbler 100 at the end of the first water inlet pipe to relieve the negative pressure. Therefore, the accumulated water inside cannot be discharged. Due to the relatively small mesh holes of the filter screen 120 in the bubbler 100, the surface tension of water molecules is stronger, which is more unfavorable for air to enter. This part of the water will remain in the first water inlet pipe for a long time, and the position where the outlet of the bubbler 100 is located is the closest to the air and is most likely to absorb acidic gases, and scale is most likely to deposit here. Over time, it will cause the filter screen 120 to be blocked and unable to spray bubbles.

[0065] The present invention is provided with an air guide pipe 420 on the first water inlet pipe, and the air outlet of the air guide pipe 420 is located inside the first water inlet pipe. The air outlet direction of the air outlet is consistent with the water inlet direction of the first water inlet pipe. After the valve 500 is closed, the water that has not flowed out in the first water inlet pipe continues to flow forward under the action of inertia. At this time, the gas enters the first water inlet pipe through the air inlet. Due to the absence of negative pressure restraint, the water in the pipeline will continue to flow forward unobstructed under the action of inertia and / or gravity until it flows out of the filter screen 120.

[0066] As Figure 7 shown, for the convenience of manufacturing and installation, the air guide pipe 420 is in an inverted L shape, and its air outlet section ( Figure 7 the horizontal section in Figure 7 ) is located at the axis of the first water inlet pipe, and the air inlet section ( Figure 7 the vertical section in

[0067] ) passes through the installation hole opened on the pipe wall of the first water inlet pipe and opens to the air. Alternatively, the air inlet section can also be an inclined section.

[0067] In some embodiments of the present application, as Figure 6 shown, the first water inlet pipe further includes a joint pipe 400 detachably connected to the first main water inlet pipe 300, and the installation hole is provided on the joint pipe 400. Refer to Figure 5 . In this way, the joint pipe 400 and the air guide pipe 420 can be modularized and used as an independent and highly reliable integral component. When in use, the air guide pipe 420 can be connected to the joint pipe 400 and then the whole can be connected to the first main water inlet pipe 300.

[0068] In addition, in the pipeline where this integral component needs to be used, for example, when the first main water inlet pipe 300 is directly connected to the faucet valve 500 in the user's home, the first main water inlet pipe 300 can also be cut off, and then the above-mentioned integral component can be inserted into the two cut ends of the pipe orifice respectively. For example, annular ribs 411 can be respectively provided on the outer walls at both ends of the joint pipe 400, and the two ends of the joint pipe 400 are inserted into the main water inlet pipe 300 so that the pipe orifice of the main water inlet pipe 300 exceeds the position of the annular ribs 411, and then a pipe clamp is used for fastening to prevent it from loosening.

[0069] In some embodiments of the present application, a boss 412 is provided on the pipe wall of the joint pipe 400, the installation hole is a stepped hole 4121, and the stepped hole 4121 penetrates through the boss 412; the air guide pipe 420 is fixedly connected to the boss 412, and a gasket 430 is provided between the air guide pipe 420 and the stepped hole 4121. In this way, it is convenient to mass-produce and assemble the integral component composed of the joint pipe 400 and the air guide pipe 420.

[0070] As Figure 7 and Figure 8As shown in the figure, a frustum-shaped boss 412 is provided at the top of the joint pipe 400. A stepped hole 4121 that vertically penetrates the boss 412 is provided on the boss 412. A gasket 430 adapted to it is provided in the stepped hole 4121. The setting of the gasket 430 can prevent liquid leakage at the interface. The inner diameter of the stepped hole 4121 gradually increases from the inside to the outside in the radial direction. Thus, in addition to installing the gasket 430, the setting of the stepped hole 4121 can also facilitate the insertion of the bent air duct 420 here into the joint pipe 400. It should be noted that when the air inlet section of the air duct 420 is inclined, the above-mentioned stepped hole 4121 can also be adaptively set as an inclined stepped hole that obliquely penetrates the boss 412, or the stepped hole 4121 remains vertical but the diameter is increased, and the gasket 430 is still vertically installed, but only the vertical part of the air duct 420 is changed to pass through the gasket 4121 obliquely.

[0071] In some embodiments of the present application, in order to position the installation of the air duct 420, a flange 421 can be provided on the air inlet section of the air duct 420. The height of the flange 421 should ensure that the height of the air outlet section of the air duct 420 is at the same height as the axis of the joint pipe 400. In order to ensure that the air outlet section of the air duct 420 is coaxial with the joint pipe 400, a plurality of through holes are provided on the flange 421, and corresponding blind holes are provided on the boss 412. After assembly and alignment, they can be fastened by screws 440 to ensure that the two do not loosen. Moreover, this can also ensure that the two are always in a coaxial setting state. Since liquids all have viscous resistance, the resistance is greater the closer to the pipe wall, and the water flow is slower, and vice versa, the closer to the center of the pipe, the faster the water flow. This can maintain the air conduction efficiency.

[0072] In some embodiments of the present application, as Figure 9 shown, the jet nozzle 220 can be integrally manufactured with the jet pipe 200. The jet nozzle 220 is a nozzle with a smooth transition and gradually narrowing shape, which can pressurize and speed up the water flow passing through here. The pressurization process can increase the solubility of gas in water. Only when the air solubility in water is high can it be easier to generate bubbles and generate more bubbles. After the speeded-up water flow encounters a mesh-like obstacle structure such as a filter screen 120, the pressure drops sharply, and more air can be precipitated and more bubbles can be generated. Both ends of the jet pipe 200 are provided with second threaded sections 211 or other connection and limiting structures, such as convex ribs or grooves, etc., and are detachably connected to the outlet of the first main water inlet pipe 300.

[0073] In some embodiments of the present application, the filter screen 120 is inclined in the bubbler 100. As an example, the range of the angle α between the filter screen 120 and the water flow direction of the bubbler 100 is 5° to 60°. Preferably, the range of α is 10° to 40°. Since the filter screen 120 is inclined, the area sprayed on the filter screen 120 increases, and thus more bubbles can be generated.

[0074] In some embodiments of the present application, the inner wall of the bubbler 100 is circumferentially provided with a stepped groove 111 that is elliptical when viewed from its vertical direction, and the filter screen 120 is inclined and clamped on the stepped groove 111; the jet pipe 200 is inserted into the bubbler 100, and a limiting member 130 is embedded between the end of the jet pipe 200 and the filter screen 120.

[0075] Specifically, the bubbler 100 is a straight pipe, and the inner wall of the bubbler 100 is provided with an inclined stepped groove 111 for limit installation of the elliptical filter screen 120, and a limiting member 130 for fixing the filter screen 120 is also provided in the stepped groove 111. As an example, the limiting member 130 is, for example, a limiting pipe with a standard hollow cylinder at the upper part and an elliptical shape after being cut off at the lower part.

[0076] The inner diameter of the limiting member 130 matches the maximum inner diameter of the jet pipe 200 and the minimum inner diameter of the bubbler 100, so as not to additionally block the water flow. At the same time, the top of the bubbler 100 is provided with a first threaded section 112 or other pipeline connection structures, such as ribbed bars, grooves, snap-fasteners and other structures, for detachable connection with the jet pipe 200. The bubbler 100 should match the connection structure of the jet pipe 200. After the jet pipe 200 and the bubbler 100 are installed, the jet pipe 200 tightly presses against the limiting member 130 to indirectly fix the filter screen 120; the filter screen 120 is installed at a large angle of inclination, which can prevent sediment particles from clogging and adhering to the filter screen 120, and can guide the sediment particles to move towards the lower corner.

[0077] Optionally, a sand discharge hole 121 is provided at the downstream position of the filter screen 120 along the water flow direction, and the sediment collected here after being filtered by the filter screen 120 can be discharged. In addition, the inclined setting of the filter screen 120 can increase the water passing area and generate more bubbles.

[0078] In addition, the present invention defines that the jet pipe 200 is detachably connected to the first main water inlet pipe 300, and the bubbler 100 is detachably connected to the jet pipe 200. Therefore, even if larger particles of sediment accumulate on the jet nozzle 220 or the filter screen 120, it is convenient to disassemble the components of the microbubble generating device 10 for cleaning or replacement.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. An inlet water system of a washing device, characterized in that, Comprising: A first water inlet waterway for delivering aerated water to the washing cavity; The first water inlet waterway has: a first water inlet pipe provided with a bubbler, and an air guide pipe for delivering air into the first water inlet pipe, the air guide pipe being located at the rear side of the bubbler; It further includes a ventilation pipe connected between the air guide pipe and the detergent box, and the ventilation pipe, the air guide pipe and the first water inlet pipe form a ventilation path for the washing cavity to communicate with the outside.

2. The water inlet system according to claim 1, characterized in that When the washing device drains water, outside air enters the washing tub through the ventilation path, and the water adhered to the bubbler can be air-dried.

3. The water inlet system according to claim 1, characterized in that, It further includes: A second water inlet waterway for delivering the water flowing through the detergent box to the washing cavity; A water inlet valve having a first valve for controlling the opening and closing of the first water inlet waterway and a second valve for controlling the opening and closing of the second water inlet waterway, The first valve and the second valve are opened at staggered times.

4. The water inlet system according to claim 1, characterized in that It further includes: A second water inlet waterway; the second water inlet waterway has: A second water inlet pipe; A detergent box connected to the water outlet end of the second water inlet pipe; A water inlet elbow, its upper end is connected to the detergent box and its lower end is connected to the washing cavity; After the second water inlet waterway finishes water inlet, a water seal for sealing the water inlet elbow is formed in the water inlet elbow.

5. The water inlet system according to claim 4, wherein The first water inlet waterway and the second water inlet waterway are opened at staggered times; the water inlet control method of the first water inlet waterway includes the following steps: S110. Open the first water inlet waterway, and water flows into the washing cavity, so that the air pressure in the washing cavity increases; S120. When the air pressure in the washing cavity is greater than the sum of the outside atmospheric pressure and the pressure generated by the water seal, part of the gas in the washing cavity can break through the water seal and flow through the detergent box and be released to the outside.

6. The water inlet system according to claim 5, characterized in that, The water inlet control method of the first water inlet waterway further includes: S130. When it is detected that part of the gas in the washing cavity breaks through the water seal, control the first water inlet waterway to close; the water in the first water inlet waterway flows into the washing cavity, and the washing cavity communicates with the outside through the ventilation path.

7. The water inlet system according to claim 5, characterized in that, The washing device includes a water level sensor arranged using the air pressure principle, and the water level sensor is used to detect the water level in the washing cavity; when part of the gas in the washing cavity breaks through the water seal, a sharp drop in the feedback value of the water level sensor is detected.

8. The water inlet system according to claim 6, characterized in that, The water inlet control method of the first water inlet waterway further includes: S140. After it is detected that the washing cavity communicates with the outside, control to enter step S110 until the water level in the washing cavity reaches the required water level.

9. The water inlet system according to claim 4, characterized in that, The first water inlet waterway and the second water inlet waterway are opened at staggered times; the water inlet control method of the first water inlet waterway includes the following steps: S210. Open the first water inlet waterway, and water flows into the washing cavity, so that the air pressure in the washing cavity increases; S220. After the first water inlet waterway is opened for a set time t, control the first water inlet waterway to close; The water in the first water inlet waterway flows into the washing cavity, and the washing cavity communicates with the outside through the ventilation path; S230. After detecting that the washing chamber is in communication with the outside, steps S210 to S230 are repeatedly executed until the water level in the washing chamber reaches the required water level.

10. A washing device, characterized in that It includes a washing chamber, a detergent box, and the water inlet system according to any one of claims 1 to 9.

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