Cleaning device

Abstract

The utility model discloses a cleaning device, belongs to the technical field of cleaning, and aims to overcome the defects of an existing cleaning device. The cleaning device comprises a jet flow nozzle, the rear end of the jet flow nozzle is communicated with an outlet of the high-pressure pump through a cleaning liquid channel, a plurality of liquid spraying openings are formed in the front end of the jet flow nozzle, and each liquid spraying opening is of a slit structure. The liquid spraying openings are parallel to one another, and the slit width of the liquid spraying openings is smaller than 2 mm. The textile drying and ironing machine further comprises a fabric bracket, the fabric bracket is in a net shape, the high-temperature and high-speed compressed air system and the cleaning liquid nozzle are combined with the net-shaped fabric bracket, the fabric can be synchronously and rapidly dried and ironed, and the ironing effect is natural, smooth and loose.

Description

Technical Field

[0001] This utility model belongs to the field of cleaning technology and mainly relates to a cleaner. Background Technology

[0002] Current methods for cleaning soft fabrics such as clothing include hand washing and machine washing. The cleaning mechanism is to use the molecular dissolving force of water to dissolve dirt, and then use macroscopic forces such as rubbing or centrifugal force from the rotation of the washing machine to squeeze or shake out the dirty water containing the dirt inside the fabric. Then, the fabric's elasticity helps it regain its original shape and absorbs relatively clean water. Finally, macroscopic external forces are used to discharge the dirty water. This cycle is repeated to achieve a gradual cleaning effect.

[0003] This cleaning method has the following disadvantages:

[0004] 1. Hand washing and rubbing, as well as the spinning and tumbling of the washing machine, create repeated friction and pressure on the surface of the fabric to squeeze out the dirty water inside the fabric, thus causing significant wear and tear on the surface of the fabric.

[0005] 2. Washing machines have the problem of over-washing and excessive water consumption, which also leads to excessive power consumption;

[0006] 3. When rinsing fabrics, some dirt will always dissolve, and the surrounding water will not be completely clean water without dissolved dirt, so it is impossible to achieve a very high cleaning effect.

[0007] In addition, the current methods of drying and ironing clothes are achieved by separate dryers and irons. Dryers take up a lot of space and consume a lot of electricity, while irons can only press the convex surface of the fabric, resulting in local flattening and deformation, or even creating an unnatural shiny ironing effect.

[0008] In the above situation, washing, drying, and ironing fabrics require three separate devices, each occupying space, consuming electricity, and taking up time in each process. Furthermore, the standards for washing and ironing are not high enough and have significant room for improvement, especially for high-end clothing and fabrics, which require a high-standard cleaning method that minimizes wear and tear.

[0009] Existing technologies for high-pressure water jet cleaning of fabrics (such as sofas and carpets) involve impacting the surface of the fabric with a large area of ​​high-pressure water jet. The problems with this technology are that the large area of ​​high-pressure water jet may cause deformation or damage to thin fabrics, and the large area of ​​high-pressure water jet may lead to water waste (the water jet not only covers the stained area, but also covers a larger proportion of the cleaning area). It is also difficult to form a uniform water film spray or penetrate into the fiber. Therefore, the cleaning efficiency and cleaning standards are not high, and there are also problems such as large space occupation and serious fabric wear.

[0010] CN2020200473881 discloses a steam jet device and a handheld garment steamer. The front end of the steam jet device of this patent has a heating element with multiple nozzles and a steam panel assembly with multiple air holes. This patent achieves the garment steaming function by jetting steam through multiple air holes. Its problem is that it can only dissolve stains through high temperature, but it is helpless against stubborn stains that are not easy to dissolve through high temperature, and the cleaning standard is not high.

[0011] CN2021800280871 discloses a fabric steam ironing machine. Its technical solution involves using a handheld device to expel steam through a concentrated, narrow, single opening, creating a high-pressure, small-diameter steam jet to address the problem of low steam pressure at multiple steam outlets, making it difficult to remove stubborn stains. While this patent aims to solve the problem of low jet pressure, the unavoidable drawback of this structure is extremely low cleaning efficiency. It can only perform localized cleaning of stubborn stains and cannot perform regular cleaning. Furthermore, this patent still fails to address the issues of high water consumption and severe fabric abrasion.

[0012] In addition, in other situations where items need to be cleaned, there are cases where repeated cleaning is necessary but not thorough, such as cleaning fruits and vegetables with high pesticide residues; there are also cases where traditional cleaning methods involve repeatedly wiping (brushing) with a cloth or brush, such as cleaning items like range hoods and window sashes, all of which require repeated cleaning, are time-consuming and labor-intensive, and are difficult to clean thoroughly. Utility Model Content

[0013] The purpose of this invention is to provide a cleaning device that employs a high-pressure jet nozzle with a multi-parallel slit structure. This nozzle can spray parallel, multi-layered, ultra-thin, high-speed fan-shaped water films to rinse and squeeze the fabric being cleaned. Furthermore, due to the use of an ultra-thin, high-speed water film of tens of micrometers, it achieves a highly efficient, water-saving, and energy-saving cleaning effect. Further, it combines a slit-expanding nozzle with electrically heated compressed air to spray a high-temperature, high-speed fan-shaped airflow, which dries, irons, and flattens the cleaned fabric on a mesh support, improving the efficiency of cleaning and handling clothing and other fabrics. This integrates cleaning, drying, and ironing into a single, portable handheld device. The technical solution adopted by this invention is as follows:

[0014] A cleaner includes a jet nozzle, the rear end of which is connected to the outlet of a high-pressure pump via a cleaning fluid channel, and the front end of which has a plurality of spray nozzles.

[0015] Furthermore, the front flow channel of the spray nozzle has two parallel surfaces.

[0016] Furthermore, the length L of the flow channel at the front end of the spray nozzle P The width δ0 of the spray nozzle is greater than or equal to that of the nozzle.

[0017] Furthermore, it also includes a compressed gas nozzle fixed to the jet nozzle, the rear end of which is connected to a compressed gas pipeline; the front end of the compressed gas nozzle has several air jets, and the flow channel of the air jets has two mutually parallel surfaces.

[0018] Furthermore, air jets are provided on one or both sides of the liquid spray nozzle; the flow channels of the liquid spray nozzle and the flow channels of the air jets are parallel to each other.

[0019] Furthermore, the width δ0 of the liquid spray nozzle is less than 2 mm, and / or the width δ7 of the air jet nozzle is less than 2 mm.

[0020] Furthermore, the spray nozzle has a constricted structure.

[0021] Furthermore, the jet nozzle has a constricted structure.

[0022] Furthermore, the liquid injection port and / or air jet port is a V-shaped flared structure with an elliptical opening.

[0023] Furthermore, a cleaning agent injection port is provided before the outlet of the jet nozzle.

[0024] Furthermore, it also includes a drying air nozzle arranged in parallel with the jet nozzle, wherein the front outlet of the drying air nozzle is a flared drying slit, and the rear end of the drying air nozzle is connected to a ventilator or air pump through a drying air channel.

[0025] Furthermore, the drying slit is a triangular flared structure, and the width of the flared drying slit is less than 2mm.

[0026] Furthermore, an electric heating wire is provided in the drying air nozzle and / or drying air channel.

[0027] Furthermore, a handle is provided at or between the rear end of the jet nozzle and the drying air nozzle. The handle has a hollow structure and is used to pass through the cleaning fluid channel and / or the drying air channel.

[0028] Furthermore, it also includes a fabric support, which is a mesh with a mesh diameter d less than 1 mm and a mesh gap of 1-3 mm.

[0029] Furthermore, it also includes a water shield disposed between the jet nozzle and the surface being cleaned, wherein the upper end face of the water shield has a rectangular hole in the middle, and the width of the rectangular hole is greater than the width of the effective range of the fan-shaped water film sprayed by the jet nozzle.

[0030] Furthermore, the two sides of the water shield in the width direction are connected to the two sides of the jet nozzle in the width direction using a folding and telescopic structure.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] By using high-pressure water nozzles, compressed air nozzles, and corresponding piping, an integrated device with washing, drying, and ironing functions is formed, which has the following beneficial effects:

[0033] 1. The diameter of filaments is generally tens of micrometers. In addition to adhering to the surface of the fabric, a large portion of dirt also penetrates between the crisscrossing filaments. This invention selectively breaks down a single, large-section water jet into multiple flat, thin, ultra-thin water film sprays. This not only washes and squeezes the fabric surface but also washes, squeezes, and rubs the dirt in the gaps between the filaments. As a selective solution, this invention has an excellent composite cleaning effect, which can reduce excessive wear on the fabric surface, is highly efficient and water-saving, and can achieve a very high cleaning standard.

[0034] 2. The high-temperature, high-speed compressed air system and nozzles combined with the mesh support can achieve simultaneous and rapid drying and ironing of fabrics, and the ironing effect is natural, flat and loose.

[0035] 3. The device integrates washing, drying, and ironing functions into a portable handheld device. Due to its high water and energy conservation, it can be used in vehicles or while traveling, and has a wide range of applications.

[0036] 4. Because the cleaning and ironing force on the fabric is uniform, and the air and water fluid itself has gentle characteristics, even if the high-speed air and water flow generates high pressure, it will not cause local wear and tear on the fabric surface similar to that caused by traditional cleaning methods. Therefore, it is especially suitable for cleaning and smoothing high-end clothing and fabrics.

[0037] 5. This utility model adopts high-speed gas encapsulation jet cleaning fluid technology, which can greatly reduce the speed attenuation or liquid vaporization problem of cleaning fluid jet affected by air resistance. It can achieve high standard jet effect with less ultra-thin high-speed liquid fluid, and improve cleaning efficiency.

[0038] 6. This utility model is also applicable to occasions where repeated cleaning is required, such as for kitchen fume hoods, window sashes, and fruits and vegetables with high pesticide residues. The high-pressure thin-film water flow makes it easier to remove residual stains from items, and the multiple parallel spray nozzles can reduce the number of times to rinse, saving time and effort. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the device of this utility model;

[0040] Figure 2 yes Figure 1 AA section view;

[0041] Figure 3 Axonometric view of the jet nozzle;

[0042] Figure 4 Schematic diagram of the spray nozzle structure;

[0043] Figure 5 This is a schematic diagram of another structure of the spray nozzle;

[0044] Figure 6 A schematic diagram of a jet nozzle with a compressed gas nozzle installed on it;

[0045] Figure 7 It is the V-shaped flared jet nozzle in Example 6;

[0046] Figure 8 yes Figure 7 The left view;

[0047] Figure 9 This is a schematic diagram of the fabric structure;

[0048] Figure 10 yes Figure 9 BB cross-sectional view;

[0049] Figure 11 This is a schematic diagram of the velocity field of a high-speed water film in a relatively still air environment;

[0050] Figure 12 This is a schematic diagram showing the relationship between the distance the water flows forward and the speed of the water flow;

[0051] Figure 13 This is a schematic diagram showing the relationship between water flow velocity and range;

[0052] Figure 14 This is a schematic diagram illustrating the principle of water flow and air jet.

[0053] Figure 15 This is a schematic diagram of a high-pressure water nozzle and a compressed air nozzle working together to clean and dry fabrics.

[0054] Figure 16 This is a schematic diagram showing an electric heating wire installed inside a compressed air nozzle and / or compressed air pipe;

[0055] Figure 17 yes Figure 14 CC section view;

[0056] Figure 18 This is a top view of the mesh bracket;

[0057] Figure 19 This is a cross-sectional view of the mesh bracket;

[0058] Figure 20 This is a schematic diagram of a water shield installed between the high-pressure water nozzle and the surface being cleaned in Example 11;

[0059] Figure 21 yes Figure 20 The left view;

[0060] Figure 22 yes Figure 20 The K-direction view.

[0061] In the diagram, 1. jet nozzle, 2. cleaning fluid channel, 3. high-pressure pump, 4. compressed gas nozzle, 41. jet nozzle, 5. drying air nozzle, 51. drying air channel, 52. high-speed airflow, 53. fan or air pump, 54. drying slit flare, 55. electric heating wire, 6. handle, 7. mesh bracket, 71. woven mesh, 8. water shield, 81. ultra-thin film water flow, 82. ordinary film water flow, 821. wire water flow, 822. gap water flow, 83. shaft, 84. connecting rod, 91. longitudinal wire, 92. transverse wire, 93. prying gap, 101. diversion grid, 102. spray nozzle, 103. shrinkage groove, 104. V-shaped flare groove. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0063] The connections mentioned in this utility model are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as bolt connections, snap-fit ​​connections, pin connections, and hinge connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can be found to achieve this function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for a fixed connection, and a bolted connection can be chosen for a detachable connection.

[0064] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0065] Example 1: As Figures 1 to 8 As shown, a cleaner includes a jet nozzle 1, the rear end of which is connected to the outlet of a high-pressure pump 3 through a cleaning fluid channel 2, and the front end of the jet nozzle 1 has a plurality of spray ports 102.

[0066] The jet nozzle 1 is equipped with n diversion grids 101, which divide the cleaning fluid delivered through the cleaning fluid channel 2 into n+1 streams, which are then sprayed out one-to-one from the n+1 spray nozzles 102. Setting two or more spray nozzles 102 can achieve higher cleaning efficiency, for the following reasons:

[0067] The common principle behind cleaning clothing and other fabrics is to utilize the dissolving effect of water molecules on dirt, combined with macroscopic mechanical forces, to achieve cleaning. Specifically, water molecules penetrate the fabric's interior, dissolving the dirt. Solutions tend to diffuse from high concentrations to low concentrations; therefore, dirt on the fabric surface is easily dissolved, and the high-concentration solution near the dirt is easily diluted and rinsed away by nearby clean water, allowing the dirt to continue dissolving. However, the dirt and dirt solution in the concave areas between the fabric's weave threads and in overlapping areas have a smaller contact area with clean water, making them less easily and continuously dissolved quickly. When the water near the dirt reaches saturation, it can no longer dissolve the dirt. The high-concentration wastewater in these concave areas and overlapping areas (hereinafter referred to as dead zones) does not easily diffuse or flow. Therefore, further macroscopic forces, such as hand washing or the centrifugal force of a washing machine, are needed to squeeze out the wastewater in the dead zones, allowing it to be absorbed and dissolved in clean water, achieving a repeated dissolution and water exchange cleaning effect.

[0068] The mechanism of rubbing clothes is to reduce the curvature of the fabric threads in certain areas to a smaller radius, allowing the wastewater trapped in the dead zones of the fabric, which are compressed on the inner diameter and stretched on the outer diameter, to be discharged. When the rubbed fabric unfolds, it recovers its original shape through its own elasticity and reabsorbs clean water, dissolving the dirt again to form a high-concentration wastewater. This process is repeated, with the high-concentration wastewater in the dead zones being discharged and the low-concentration clean water being absorbed, until the dirt in the dead zones is completely or substantially removed by the relatively low-concentration clean water. Generally, rubbing each area of ​​fabric thirty to fifty times is sufficient to achieve a cleaning effect.

[0069] The washing machine works by using centrifugal force to remove wastewater from the dead zones of the fabric. Then, when the speed is reduced and the rotation direction is reversed, low-concentration water is drawn in. When the rotation speed is increased again, the wastewater from the dead zones of the fabric is removed. This cycle is repeated dozens of times to achieve a basic cleaning effect.

[0070] Mechanism analysis of traditional cleaning methods reveals that they all utilize the microscopic dissolution effect of water molecules, combined with the macroscopic mechanical force of cyclic squeezing, to maintain a relatively clean aqueous solution that continuously dissolves dirt.

[0071] Conventional manual or machine washing of fabrics requires repeated rubbing or tumbling dozens of times to squeeze out and remove the dirty water from the fabric, followed by repeated cycles of water absorption, in order to achieve the desired cleaning effect.

[0072] The cleaning fluid pumped out by the high-pressure pump 3 has a high flow rate and impact force, which has a triple cleaning effect on the fabric: dissolving, rinsing, and cyclic squeezing. The high-speed rinsing effect is something that traditional cleaning methods cannot achieve. It has a scraping effect on dirt and sewage in the dead areas of the fabric, which can greatly improve the cleaning efficiency. If the cleaning effect of this scraping is 2 to 3 times more efficient than the cleaning efficiency of traditional cleaning methods, then theoretically, compared with the dozens of squeezing cycles of traditional rubbing or turning clothes, the high-speed cleaning fluid can also handle 20 cycles of squeezing and cleaning of the fabric.

[0073] Therefore, by using the jet nozzle 1 with multiple spray nozzles 102 in this embodiment for cleaning, multiple high-speed cleaning liquids can be sprayed onto the fabric. If we assume that the number of spray nozzles 102 is 5, then the jet nozzle 1 sprays 5 high-speed cleaning liquids. Each time it passes through the area being cleaned, it is equivalent to 5 cycles of squeezing, draining, and absorbing water on the fabric. Therefore, if the fabric is repeatedly cleaned 4 times using the jet nozzle 1, it is equivalent to 20 cycles of squeezing and rubbing the fabric. With the aforementioned high cleaning efficiency, the cleaning effect can be achieved. If the jet nozzle 1 with 10 parallel spray nozzles 102 is used for cleaning, the fabric surface can be rinsed twice to achieve the same cleaning effect. Therefore, using the jet nozzle 1 with multiple spray nozzles 102 can significantly improve the cleaning efficiency and reduce water consumption by more than 90% compared to high-pressure water flow.

[0074] Example 2: As Figures 1-10 As shown in Example 1, this embodiment is described below. The front flow channel of the spray nozzle 102 has two parallel surfaces (referred to as "slits"), and the length L of the front flow channel of the spray nozzle 102 is... P The width δ0 of the nozzle 102 is greater than or equal to that of the nozzle, and the two parallel surfaces can be as follows: Figure 4 The parallel plane 15-1 shown can also be as follows: Figure 5 The parallel curved surface 15-2 shown can also be a structure that combines both planar and curved surfaces. The front flow channel of the nozzle 102 refers to the end of the jet nozzle 1 outlet. This part of the flow channel is set as two mutually parallel surfaces. The purpose is to regulate the turbulent flow in the fluid into laminar flow, so that the ejected fluid is in the form of a thin film. The length of this part can be set according to the purpose of use (fluid properties and flow velocity). Generally, it is necessary to calculate the length L of the flow channel of the two parallel surfaces. P The width δ0 of the jet nozzle 1 is greater than or equal to that of the nozzle orifice.

[0075] The jet nozzle 1, employing a slit-structure spray orifice 102, can spray a wide and uniform fan-shaped ultra-thin high-speed water film with a relatively small amount of high-pressure cleaning fluid. This film effectively washes and cleans the fabric, allowing the water flow to both dissolve dirt and exert a macroscopic impact force on the fabric. The width δ0 of the spray orifice 102 is set according to the thickness of the sprayed water film, ensuring that the thickness is lower than the diameter of a single filament in the fabric. This allows the water film to be directly sprayed and further penetrate into the gaps between the fabric threads. The high-speed water film longitudinally squeezes and peels away dirt from the cross-sections of the fabric, thus solving the problem that hand washing and conventional high-pressure water flow cannot reach deep cleaning. This achieves high-efficiency, water-saving, and energy-saving cleaning while maintaining high standards and efficiency. The specific mechanism analysis is as follows:

[0076] like Figure 1 As shown, the length B0 of the spray nozzle 102 is set to 4 mm, and the width δ0 is set to 0.5 mm. The jet nozzle 1 is set to spray an ultra-thin, high-speed water film with an included angle θ = 90° during cleaning. Due to the viscosity and surface tension of water, the fan width of the ultra-thin, high-speed water film gradually increases with the increase of the spray range. Correspondingly, the cross-sectional thickness δ of the ultra-thin, high-speed water film... L It gradually thins out, and according to the fluid continuity equation, we can obtain:

[0077] B0×δ0×V0=B L ×δ L ×V L (1-1)

[0078] Where: V0 is the initial velocity of the ultra-thin high-speed water film ejected from jet nozzle 1;

[0079] B L The cross-sectional width of the ultrathin high-speed water film at the range L;

[0080] δ L The cross-sectional thickness of the ultrathin high-speed water film at the range L;

[0081] V L The average velocity of the ultrathin high-speed water film at the range L;

[0082] Let L0 be the distance from the outlet of jet nozzle 1 to the vertex of the flare angle, and take L0 = 2mm. During cleaning, the range of jet nozzle 1 to the surface of the fabric being cleaned is 28mm to 48mm. Then, the fan width B formed by the high-speed water film formed by jet nozzle 1 at the range L is... L Calculated using the following formula:

[0083] B L =B0×(L+L0) / L0=60mm~100mm (1-2)

[0084] From formula (1-1), we can obtain: δ L=B0×δ0×V0 / B L ×V L ;

[0085] If the water film velocity V0 decreases by 20% to 30% after passing through a range of L, then V L =0.7~0.8V0, water film thickness δ L The thickness is approximately 0.03mm to 0.04mm. This shows that a nozzle with a slit-flaring structure can spray and form an ultra-thin, high-speed water film of only tens of micrometers.

[0086] To facilitate the formation of an ultrathin, high-speed water film with an included angle θ = 90°, the front flow channel of the jet nozzle 102 can be configured as a triangular flared structure, meaning the front flow channel of the jet nozzle 102 is flared along the length of the slit. The included angle θ of the flared nozzle 1 can even be set to 90°. (The water film thickness δ...) L If the usage requirements are met, the front flow channel of the spray nozzle 102 can also be set as a straight or narrowed structure, that is, the front flow channel of the spray nozzle 102 is of equal length or narrowed in the length direction of the slit.

[0087] When an ultrathin high-speed water film is incident perpendicularly onto the fabric or braided yarn, the impact pressure exerted on the fabric is a variable representing the macroscopic force acting on a unit area of ​​the fabric. The impact pressure P(V) of this ultrathin high-speed water film... L Calculated using the following formula:

[0088] P(V L )=1 / 2×ρ×V L 2 (1-3)

[0089] In the formula: ρ is the density of water;

[0090] V L If an ultrathin high-speed water film with a velocity of 40 m / s to 60 m / s is incident on the fabric surface, then the perpendicular pressure P(V) exerted by the ultrathin high-speed water film on the fabric surface is... L = 0.8MPa~1.8MPa. The above analysis explains that the common principle of clothing cleaning is to utilize the microscopic molecular dissolution of dirt by water molecules, combined with macroscopic squeezing or centrifugal force, to achieve a cleaning effect through a combination of dissolving dirt and removing wastewater.

[0091] The problem is that the dirt in the corners and dead zones of woven fabrics is a high-concentration wastewater area that is not easily dissolved by microscopic molecular action, and it is also an area where macroscopic forces are not effective. Therefore, this area is often used as the final cleaning target, and repeated cleaning that is "time-consuming", "labor-consuming", and "water-consuming" results in large areas of non-target areas being over-cleaned and worn down, while the target area is exactly in the dead zone of macroscopic and microscopic forces, and the cleaning effect is still not ideal.

[0092] In this embodiment, a slit-structured spray nozzle 102 is used to spray cleaning fluid with a flow rate of tens of meters per second. A high-speed, ultra-thin water film with a thickness of micrometers, which is the diameter of the woven fabric, is formed to clean the woven fabric.

[0093] Among them, the high-speed jet of 40-100m / s can generate a high-speed water film with an impact pressure of 0.8-5mPa, which can exert the microscopic dissolution effect of small molecules, while also exerting an objective flushing and scraping force on the dead area of ​​the fabric, and also exerting a squeezing effect on the fabric surface, so as to achieve the squeezing and sewage discharge effect in the dead area of ​​the woven fabric.

[0094] Further analysis shows that the high-speed fan-shaped water film moves at the same speed V L The effect of different water film thicknesses on the cleaning effect when water is incident on the fabric: the water film thickness δ1 is less than the diameter D of the fabric's braided yarns. X Even the diameter D of textile filaments, which is smaller than δ, is less than that of the yarn. S The cleaning effect is optimal, and the specific mechanism is as follows:

[0095] Fabrics are generally woven from cotton yarn, wool yarn, chemical fiber, etc. with a diameter Dx = 0.1mm to 0.8mm, while yarn is generally spun from cotton, wool, fiber filament, etc. with a diameter Ds = 0.01-0.2mm.

[0096] The types of dirt or sewage adhering to fabrics include: (1) dirt on the outer surface of the yarn facing the fabric surface; (2) dirt or sewage adhering to the concave surface between the intersecting yarns; and (3) dirt or sewage hidden in the overlapping area between the yarns and filaments. Among them, categories (2) and (3) are collectively referred to as dirt in the fabric "dead zone".

[0097] Specifically, such as Figure 9 , Figure 10 As shown, the fabric is woven from several warp threads 91 and several cross threads 92. The diameter of both warp threads 91 and cross threads 92 is R. The warp threads 91 and cross threads 92 are collectively referred to as threads. The gap between two adjacent threads is J, and the pitch between two adjacent threads is R. J =R+J, setting the thickness δ2 of ordinary thin-film water flow 82 to be greater than R. J When the ordinary film water flow 82 washes the fabric surface, it presses down on the longitudinal and transverse threads 91 and 92. If the ordinary film water flow 82 is decomposed into two types: the thread water flow 821 that washes the threads and the gap water flow 822 that washes the gap between two adjacent threads, the thread water flow 821 further presses the upper surface threads more tightly onto the superimposed lower threads, making it more difficult for the gap water flow 822 to wash into the dead zone of the fabric, thus failing to effectively wash away dirt in the dead zone.

[0098] and Figure 9 The thickness δ1 of the ultrathin film water flow 81 shown can reach tens of micrometers as mentioned above, such that δ1 < R J Even δ1 < R, so that when the ultrathin film water flow 81 passes through the wire gap J, there is no excessively thick water flow pressing on the adjacent wires in the fabric wire gap.

[0099] Cleaning is performed using an ultra-thin film water jet 81 with a diameter equivalent to that of the wire. This allows the ultra-thin film water jet 81 to act as a water wedge, effectively lifting the wire. Specifically, as follows... Figure 10 As shown, when the ultra-thin film water flow 81 washes between the two longitudinal wires 91, it can pry up the longitudinal wire 91 located above the transverse wire 92, creating a prying gap 93 between the longitudinal wire 91 and the transverse wire 92. The ultra-thin film water flow 81 can then clean the prying gap 93, opening up the dead zone. This allows the microscopic dissolving force of water molecules and the objective scouring and scraping force of high-speed, high-pressure water to directly act on the target cleaning area, making the dead zone of the woven fabric no longer a dead zone. The prying effect of the ultra-thin water film also separates the fabric with dirt stuck together, restoring it to its natural original state and making it more fluffy. This is an effect that is difficult to achieve with non-thin water films that are larger than the diameter of the fabric. When the ultra-thin film water flow 81 moves away from the wire gap J, it directly presses on the upper surface of the wire, applying high-intensity impact pressure to squeeze out the wastewater that has absorbed clean water and dissolved dirt again. The high-speed water film then moves back to the wire gap, injecting clean water and rinsing away the dirt. This cycle repeats continuously, achieving a triple cleaning effect: efficient water dissolution of dirt, high-speed water scraping of dirt, and high-speed water film impact pressure cyclic squeezing, sewage discharge, and water absorption.

[0100] In summary, ultra-thin, high-speed jet water film cleaning fabrics at the micron level, reaching the fabric diameter scale, achieves the following cleaning effects:

[0101] (1) When the micron-level ultrathin water film is sprayed into the gaps between the woven fabrics, it plays a role in prying and separating the fabrics. This makes the dead zones of the woven fabric no longer dead zones, allowing water to flow freely and restoring the fabric to its fluffy and natural state.

[0102] (2) Based on the above-mentioned ultra-thin water film skid effect, the macroscopic force of high-speed jet is used to achieve the flushing and scraping effect on the dirt in the dead area of ​​the fabric.

[0103] (3) When the high-speed water film is shot onto the outer surface of the woven fabric, it exerts the squeezing effect of the high-speed water film impact pressure to achieve repeated squeezing, sewage discharge and water absorption circulation cleaning effect on the inside and between the fabric.

[0104] (4) While the macroscopic cleaning effect of the high-speed thin film water is exerted, the microscopic dissolving force of water molecules is also utilized.

[0105] Therefore, under the quadruple macroscopic and microscopic forces of high-speed thin-film water, the woven fabric no longer has cleaning dead zones, achieving a targeted cleaning effect. It avoids over-cleaning of the sewage discharge area, which would cause wear to the fabric. Furthermore, the membrane's prying and separating action causes the bonded fabric to separate and fluff up, restoring it to its original state. Ultimately, it achieves the high standard of "time-saving", "labor-saving", and "clean like new" results.

[0106] Example 3: Reference Figure 6 This embodiment also includes a compressed gas nozzle 4 fixed to the jet nozzle 1. The rear end of the compressed gas nozzle 4 is connected to a compressed gas pipeline (not shown in the figure). The front end of the compressed gas nozzle 4 has a plurality of air jets 41, and the flow channel of the air jets 41 has two mutually parallel surfaces. Similarly, the two mutually parallel surfaces of the compressed gas nozzle 4 can also be parallel planes and / or parallel curved surfaces (not separately labeled). It should also be noted that the flow channel structure at the "non-front end outlet" of the jet nozzle 1 and the compressed gas nozzle 4 can be the same as the flow channel at the "front end outlet," such as... Figure 5 The image shows two parallel planes with the same cross-section. They can also be different, as shown below. Figure 4 The flow channel 17 shown as "not at the front-end outlet" has a narrowing structure (Note: The "not at the front-end outlet" flow channel in this embodiment refers to the same flow channel connected to the "front-end outlet flow channel", but they are different names due to their different positions. The "not at the front-end outlet" flow channel is located far away from the front-end outlet relative to the "front-end outlet flow channel").

[0107] In this embodiment, "fixed" means that the positions of the compressed gas nozzle 4 and the jet nozzle 1 are fixed when in use, and the compressed gas nozzle 4 and the jet nozzle 1 can be connected in a detachable or non-detachable manner when not in use.

[0108] Example 4: Reference Figure 6 One or both sides of the liquid injection nozzle 102 are provided with air jet nozzles 41; the flow channels of the liquid injection nozzle 102 and the flow channels of the air jet nozzles 41 are parallel to each other, the width δ0 of the liquid injection nozzle 102 is less than 2 mm, and / or the width h of the air jet nozzles 41 is less than 2 mm, so that the fluid ejected from the jet nozzle 1 and / or the gas ejected from the compressed gas nozzle 4 are in the form of a thin film.

[0109] A jet nozzle 41 is provided on one or both sides of the liquid spray nozzle 102. Figure 6The number of jet nozzles 41 shown is one more than the number of liquid spray nozzles 102. Several liquid spray nozzles 102 are arranged one-to-one at the intervals of several jet nozzles 41, so that there are jet nozzles 41 on both sides of each liquid spray nozzle 102. The flow channels of the liquid spray nozzles 102 and the flow channels of the jet nozzles 41 are parallel to each other. Taking cleaning as an example, during cleaning, the jet nozzle 1 gradually moves forward to spray high-speed water to wash the working surface. The jet nozzles 41 on both sides of the liquid spray nozzle 102 can spray out two layers of high-speed gas film. The thin film gas is parallel to the high-speed water film. At this time, the high-speed gas film sprayed by the compressed gas nozzle 4 can play a "protective" role for the high-speed water film. During cleaning, the high-speed water film is wrapped by the synchronously parallel high-speed gas film, which can greatly reduce the significant speed reduction and atomization loss caused by the resistance of the static air in the environment, thereby ensuring that the high-speed water film is sprayed onto the working surface at the highest possible speed, improving the cleaning effect. The specific mechanism analysis is as follows:

[0110] like Figure 11 As shown, the velocity field of a high-speed water film moving in still ambient air gradually decreases from the center of the water film to the edge region in contact with the air. This is because when the high-speed water film moves at high speed in still ambient air, the boundary layer at its interface with the air is affected by the viscosity of the air, causing the velocity of the water flow at the interface edge to decrease rapidly, especially in the formation of… Figure 11 The velocity field is shown. The boundary layer water flow near the air interface exhibits the following characteristics: the velocity direction of the water flow is turbulent, forming numerous vortices; therefore, this region is called the turbulent layer (region). The forward velocity in the turbulent layer is severely attenuated, even forming reverse velocity vortices. Within the turbulent layer, near the middle of the water flow, the water velocity direction remains consistent, flowing forward, and the rate (slope) of velocity attenuation from the inside out is much smaller than that in the turbulent layer.

[0111] Due to the velocity field characteristics of the high-speed water film moving in still ambient air, as the high-speed water film continues to flow forward, the turbulent layer of its outer boundary layer is continuously decelerated, stripped away, and atomized. Consequently, the thickness of the central laminar region of the high-speed water film gradually decreases, as specifically... Figure 12 As shown, with the increase of the distance L (range) the water flows forward, the rate at which the average velocity of the water decreases accelerates.

[0112] Right now

[0113] Furthermore, as the travel distance of the high-speed water film increases, the rate of velocity decay is closely related to the diameter or thickness δ of the water flow. The thicker the water flow, the slower the velocity decay rate and the longer the relative range; the thinner the water flow, the faster the velocity decay rate and the shorter the relative range. The specific reasons are as follows: Figure 11As shown, the thicker the water flow, the smaller the proportion of the turbulent zone at the water-air interface to the total water flow thickness; conversely, the thinner the water flow, the larger the proportion of the turbulent zone to the total water flow thickness. Therefore, the rate of decrease in water flow velocity is directly proportional to the proportion of the turbulent zone to the total water flow thickness. The specific reasons are as follows... Figure 13 As shown, the different thicknesses of the high-speed water film result in different velocity decay rates when it moves through the air, thus leading to different ranges. Curves ①, ②, and ③ represent the ranges L1 > L2 > L3 when the water flow thicknesses δ3 > δ4 > δ5 are different, given that the water has the same initial velocity V0 and is ejected from a high-pressure nozzle.

[0114] Based on the relationship between the velocity decay of the high-speed water film and its travel distance, and the relationship between the water flow thickness and its velocity decay rate and range, it is evident that the aforementioned slit nozzle can spray a thin film of high-speed water, aiming to form a more uniform and wider high-speed water film incident working surface, achieving both high efficiency and water conservation. However, to save water, using a thinner high-speed water film suffers from the aforementioned drawbacks: the velocity of the high-speed water film decays too quickly in ambient air, resulting in a shorter range, thus affecting the jetting effect. Therefore, to address this drawback, utilizing high-speed air to encase a high-speed thin film of water can effectively solve this problem.

[0115] Specific mechanism analysis as follows Figure 14 As shown, air jets 41 are provided on both sides of the spray nozzle 102. During cleaning, a thin-film high-speed water film is formed, which is sandwiched by high-speed air in a high-speed channel. This allows the high-speed water film and the high-speed interlayer air to flow forward synchronously. The relatively still air in the environment only comes into contact with the high-speed interlayer air, not directly with the high-speed water film. This creates a velocity attenuation zone from the inside out in the high-speed airflow area, while having little impact on the velocity of the high-speed water film in the central area. Therefore, it can ensure that the high-speed water film is sprayed onto the working surface at a high flow rate, increasing the momentum and kinetic energy of the high-speed water film impacting the working surface, which is beneficial for washing away dirt and achieving both water conservation and good cleaning effect. In other words, by using high-speed air to sandwich a high-speed water film, a thinner water film can be used to achieve a good cutting and washing effect, making it more water-saving and efficient.

[0116] Example 5: Figure 5 , Figure 6 As shown, the nozzle of the jet nozzle 1 is a constricted structure 17, and the nozzle of the compressed gas nozzle 4 is also a constricted structure 17. Of course, the nozzles of the jet nozzle 1 and the compressed gas nozzle 4 can both be constricted structures, or either one of them can be a constricted structure. In this embodiment, "constriction" refers to the reduction in the area of ​​the nozzle relative to the cross-sectional area of ​​the flow channel at the front outlet.

[0117] Example 6: As Figure 7 , Figure 8As shown, the difference between this embodiment and Embodiment 2 is that the liquid injection port 102 and / or the air jet port 41 are V-shaped flared structures with elliptical openings. The front end face of the jet nozzle 1 is provided with several V-shaped flared grooves 104. Several inner holes of the jet nozzle 1 and several V-shaped flared grooves 104 intersect one-to-one to form the liquid injection port 102 with an elliptical projection plane. The length direction of the V-shaped flared grooves 104 is parallel to the major axis of the elliptical liquid injection port 102, and the V-shaped flared grooves 104 are symmetrical about the major axis of the elliptical liquid injection port 102.

[0118] The major axes of the ellipses of several of the spray nozzles 102 are parallel to each other.

[0119] A constriction groove 103 is provided in front of the inner orifice outlet of the jet nozzle 1, which causes the flow area of ​​the inner orifice of the jet nozzle 1 to decrease rapidly as the constriction narrows, while the flow velocity increases rapidly. The constriction groove 103 is the elliptical outlet edge with the smallest flow area. Outside the elliptical outlet is a V-shaped flaring groove 104, the length direction of which is parallel to the major axis of the elliptical outlet edge. This type of elliptical outlet V-shaped flaring nozzle causes the high-pressure water flow to form a fan-shaped water film along the length direction of the V-shaped flaring groove 104 after being ejected from the outlet. Compared with the slit structure jet nozzle 102 in Embodiment 2, this type of spray nozzle 102 is relatively simple in terms of manufacturing process. The fan angle of its fan-shaped water film is inversely proportional to the flaring angle of the V-shaped flaring groove 104. The fan angle of the high-speed water film will change with the water pressure, which is not as stable as the fan angle of the high-speed fan-shaped water flow of the slit nozzle.

[0120] Example 7: This embodiment is described in conjunction with Example 4. The width δ0 of the liquid spray nozzle 102 is less than 2 mm, and / or the width δ7 of the air jet nozzle 41 is less than 2 mm, so that the fluid ejected from the jet nozzle 1 and / or the gas ejected from the compressed gas nozzle 4 are in the form of a thin film.

[0121] The length direction of the jet nozzle 41 is parallel to the length direction or major axis direction of the plurality of liquid spray nozzles 102, so that the sprayed compressed gas is parallel to the direction of the cleaning liquid.

[0122] See Figure 6 The slit width (distance between the two long sides at the outlet) of the liquid spray nozzle 102 is δ0, and the slit width (distance between the two long sides at the outlet) of the air jet nozzle 41 is δ7. Both δ0 and δ7 are less than 2mm, and the air jet nozzle 41 is parallel to several liquid spray nozzles 102.

[0123] Example 8: This example is illustrated in conjunction with the previous example. A cleaning agent injection port is provided before the outlet of the jet nozzle 1.

[0124] Example 9: As Figures 15-17As shown, this embodiment is described in conjunction with any of the embodiments 1 to 8. The cleaner also includes a drying air nozzle 5 arranged in parallel with the jet nozzle 1. The front outlet of the drying air nozzle 5 is a drying slit flare 54, and the rear end of the drying air nozzle 5 is connected to a ventilator or air pump 53 through a drying air channel 51.

[0125] The drying slit flare 54 is a triangular flared slit structure, and the slit width δ6 of the drying slit flare 54 is less than 2mm. An electric heating wire 55 is provided inside the drying air nozzle 5 and / or the drying air channel 51.

[0126] A handle 6 is provided at or between the rear end of the high-pressure water jet nozzle 1 and the drying air nozzle 5. The handle 6 has a hollow structure and is used to pass through the cleaning fluid channel 2 and / or the drying air channel 51.

[0127] When in use, direct the drying air nozzle 5 toward the fabric and spray a high-temperature, high-speed airflow of tens of degrees Celsius or over 100 degrees Celsius within a range of a few centimeters to dry and iron the fabric.

[0128] The fan or air pump 53 sprays a high-speed airflow of tens of meters per second through the drying air nozzle 5, which can generate a gas pressure of tens of kilopascals on the fabric.

[0129] Through the dual action of the high temperature and high speed airflow, the moisture in the fabric is transformed from liquid to gas and is quickly dispersed by the high speed airflow, achieving the effect of rapid air drying or baking.

[0130] At the same time, the high-speed airflow applies a large pressure of tens of kilopascals to the fabric, causing the fabric to be dried and shaped from a wet state and a flattened state due to air pressure impact, thus achieving the effect of ironing flatness.

[0131] It is important to emphasize the advantages of this high-pressure airflow ironing method. The impact pressure generated by the high-speed airflow is uniform on the fabric, creating a consistent pressure on the convex and concave woven surface. It also allows for rapid air drying and shaping, resulting in a fabric that is not only flat but also loose and natural. This is a significant advantage over traditional ironing, which can only deform the convex surface of the fabric, resulting in an unnatural flatness or even a reflective finish.

[0132] Example 10: As Figure 18 , Figure 19As shown, this embodiment is described in conjunction with any of the embodiments from Embodiment 1 to Embodiment 8. A mesh support 7 is provided for placing fabrics on the mesh support 7 for washing and ironing operations. The diameter d of the woven mesh material 71 constituting the mesh support 7 is at least less than 1 mm, and d should be made as small as possible within the limits of tensile strength. The mesh gap is at least larger than the diameter d of the wire to facilitate water permeability, but it should not be too large to prevent the fabric from being excessively stretched and deformed in the mesh when it is washed and ironed on the mesh support 7. This buffers and reduces the impact pressure of the high-speed water film on the fabric, and also avoids the large mesh openings from causing indentations on the fabric during drying and ironing.

[0133] Therefore, based on the limited maximum mesh size, the smaller the mesh diameter d, the greater the water permeability of the mesh support 7, which is beneficial to the washing and cleaning effect on the fabric.

[0134] Example 11: As Figures 20-22 As shown, this embodiment is described in conjunction with any of the embodiments 1 to 8. A water-blocking cover 8 is provided between the jet nozzle 1 and the surface to be cleaned. The upper end face of the water-blocking cover 8 has a rectangular hole in the middle, and the width of the rectangular hole is L. x It is greater than the width of the ultra-thin high-speed water film sprayed by nozzle 1 during cleaning.

[0135] The opening width L of a rectangular hole y The thickness δ greater than that of the ultrathin high-speed water film E During cleaning, high-speed fan-shaped thin film water can pass through the rectangular hole of the water shield 8 and be sprayed onto the fabric being cleaned. The outer cover plate of the rectangular hole of the water shield 8 can prevent the sewage reflected after the high-speed water film is sprayed onto the fabric from splashing everywhere.

[0136] The water shield 8 is connected to the jet nozzle 1 on both sides of the width direction by a frame with a folding and telescopic structure, such as... Figure 18 , Figure 19 As shown, several connecting rods 84 are connected in sequence through a rotating shaft 83 to form a water shield 8 whose angle can be adjusted in the length (height) and width directions. During washing, the extension length and angle of the water shield 8 are adjusted according to the distance and angle required for the ultra-thin high-speed water film to rinse the fabric.

[0137] Example 12: As Figure 15 As shown, the method of using the cleaner is as follows: the fabric to be cleaned is placed on the mesh bracket 7, which can be set horizontally or at an angle. Using the handle 6, the distance between the jet nozzle 1 and the fabric is kept several centimeters, so that the ultra-thin high-speed water film and airflow sprayed by the jet nozzle 1 form a rinsing water band and airflow band of several centimeters to tens of centimeters on the surface of the fabric. During cleaning, the cleaner moves along the surface of the fabric and the cleaning movement direction is perpendicular to the high-speed fan-shaped thin film water flow of the jet nozzle 1 to the water band of the fabric, that is, perpendicular to the long side of the outlet of the jet nozzle 1.

[0138] Among them, the angle α between the ultrathin film water flow 81 and the high-speed airflow 52 and the normal of the fabric is approximately between 90° and 30°.

[0139] During cleaning, the distance between the jet nozzle 1 and the fabric and the incident angle can be flexibly adjusted through the handle 6 according to the fabric type and the degree of dirt. Cleaning agent is injected through the cleaning agent inlet according to the degree of dirt on the fabric.

[0140] For areas that are difficult to clean, the jet nozzle 1 moves back and forth along the direction of the cleaning motion to repeatedly scour and squeeze the fabric, thereby improving the cleaning effect.

[0141] Example 13: Another method of using the cleaner is as follows: During operation, the jet nozzle 1 is positioned at the front and the drying air nozzle 5 is positioned at the rear. The cleaner is then used for sequential cleaning, drying, and ironing. When drying and / or ironing the fabric, the drying air nozzle 5 is kept within a few centimeters of the fabric and moved along the fabric surface. The long side of the outlet of the drying air nozzle 5 is perpendicular to the direction of movement. The high-temperature, high-speed fan-shaped airflow from the compressed air jet is used to dry and iron the fabric. This allows the cleaning function of the jet nozzle 1 and the drying and ironing functions of the drying air nozzle 5 to be used separately.

[0142] The reciprocating movement distance is less than the distance between the jet nozzle 1 and the drying air nozzle 5, reducing the impact on the fabric dried by the high-temperature, high-speed airflow at the rear.

[0143] In the fabric area cleaned by the ultra-thin high-speed water film of the jet nozzle 1, the high-temperature high-speed airflow sprayed by the moving drying air nozzle 5 then air-dries, dries, flattens and shapes the fabric placed on the mesh support 7, and irons it flat, natural and loose.

[0144] This utility model device achieves a high standard and high efficiency in integrating fabric washing, drying and ironing. The high-speed water film washing causes far less wear and tear on the fabric than rubbing and washing machine washing. Ironing with high-speed, high-temperature airflow makes it easier to shape the fabric naturally and loosely.

[0145] The above embodiments are merely illustrative examples of the present utility model and do not limit its scope of protection. Those skilled in the art can make partial changes to it, as long as they do not exceed the spirit and essence of the present utility model, they are all within the scope of protection of the present utility model.

Claims

1. A cleaner, characterized in that, It includes a jet nozzle (1), the rear end of which is connected to the outlet of a high-pressure pump (3) through a cleaning fluid channel (2), and the front end of the jet nozzle (1) has a plurality of spray ports (102).

2. The cleaner according to claim 1, characterized in that, The front flow channel of the spray nozzle (102) has two parallel surfaces.

3. The cleaner according to claim 2, characterized in that, The length L of the front flow channel of the injection port (102) P The width δ0 of the spray nozzle (102) is greater than or equal to that of the nozzle.

4. The cleaner according to claim 1, characterized in that, It also includes a compressed gas nozzle (4) fixed to the jet nozzle (1), the rear end of which is connected to a compressed gas pipeline; the front end of the compressed gas nozzle (4) has a plurality of jet ports (41), and the flow channel of the jet ports (41) has two mutually parallel surfaces.

5. The cleaner according to claim 4, characterized in that, A jet nozzle (41) is provided on one or both sides of the liquid spray nozzle (102); the flow channel of the liquid spray nozzle (102) is parallel to the flow channel of the jet nozzle (41).

6. The cleaner according to claim 4, characterized in that, The width δ0 of the liquid spray nozzle (102) is less than 2 mm, and / or the width δ7 of the air jet nozzle (41) is less than 2 mm.

7. The cleaner according to claim 1, characterized in that, The spray nozzle (102) has a constricted structure.

8. The cleaner according to claim 4, characterized in that, The jet nozzle (41) is a constricted nozzle structure.

9. The cleaner according to claim 8, characterized in that, The liquid injection port (102) and / or the air jet port (41) are V-shaped flared structures with elliptical openings.

10. The cleaner according to claim 1, characterized in that, An injection port for cleaning agent is provided before the outlet of the jet nozzle (1).

11. The cleaner according to any one of claims 1-10, characterized in that, It also includes a drying air nozzle (5) arranged in parallel with the jet nozzle (1), the front outlet of the drying air nozzle (5) is a drying slit flare (54), and the rear end of the drying air nozzle (5) is connected to a ventilator or air pump (53) through a drying air channel (51).

12. The cleaner according to claim 11, characterized in that, The drying slit flare (54) is a triangular flared slit structure, and the slit width of the drying slit flare (54) is less than 2 mm.

13. The cleaner according to claim 11, characterized in that, An electric heating wire (55) is provided in the drying air nozzle (5) and / or the drying air channel (51).

14. The cleaner according to claim 11, characterized in that, A handle (6) is provided at or between the rear end of the jet nozzle (1) and the drying air nozzle (5). The handle (6) is a hollow structure and is used to pass through the cleaning fluid channel (2) and / or the drying air channel (51).

15. The cleaner according to any one of claims 1-10, characterized in that, It also includes a fabric support (7), which is a mesh with a mesh diameter d less than 1 mm and a mesh gap of 1-3 mm.

16. The cleaner according to any one of claims 1-10, characterized in that, It also includes a water shield (8) provided between the jet nozzle (1) and the surface being cleaned. The upper end face of the water shield (8) has a rectangular hole in the middle. The width of the rectangular hole is greater than the width of the effective range of the fan-shaped water film sprayed by the jet nozzle (1).

17. The cleaner according to claim 16, characterized in that, The water shield (8) is connected to the jet nozzle (1) on both sides of the width direction by a folding telescopic structure.

Images