Portable cleaning apparatus

Abstract

A portable cleaning device comprises a cleaning head, a fluid recovery mechanism having a dirty liquid container and a fluid recovery power source and a motor driving the fluid recovery power source to perform suction work, a holding part for a user to operate and hold the portable cleaning device to perform cleaning work, and the portable cleaning device has at least a first working position in which the height of the holding part from the ground is greater than the height of the cleaning head from the ground, and a second working position in which the height of the holding part from the ground is less than the height of the cleaning head from the ground. The dirty liquid container is provided with an exhaust structure comprising an exhaust port adjusting the pressure of the inner cavity of the dirty liquid container, and the exhaust port is configured to be exposed above the liquid level of the dirty fluid in the dirty liquid container when the portable cleaning device is in the first working position or the second working position. The portable cleaning device can reduce the requirements for water quantity and water pressure of the cleaning device, and can realize multi-cleaning surface and multi-angle complex working condition cleaning, and has better cleaning effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning, in particular to a portable cleaning device. BACKGROUND

[0002] A pressure washer is a device that uses a power device to drive a pump to generate a pressure water flow to wash the surface of an object. It can use the pressure water flow to remove and flush away dirt, so as to achieve the purpose of cleaning the surface of the object, and brings great convenience to people's life. In order to make the pressure washer convenient to hold and carry, a portable pressure washer with an integrated motor and pump is appeared on the market, which is convenient for users to carry.

[0003] However, the traditional portable cleaning device needs to rely on the pressure water flow to remove and flush away the dirt, so it has high requirements for water quantity and water pressure, and the cleaning effect cannot meet the needs of users. SUMMARY

[0004] The purpose of the present application is to provide a portable cleaning device which can reduce the requirements of the cleaning device for water quantity and water pressure, and can realize multi-cleaning surface, multi-angle and complex working condition cleaning with better cleaning effect.

[0005] The above-mentioned purpose of the present application can be realized by the following technical scheme:

[0006] The present application provides a portable cleaning device, comprising:

[0007] a cleaning head, a fluid recovery mechanism having a dirty liquid container, a fluid recovery power source and a motor driving the fluid recovery power source to perform suction work, and the dirty fluid generated by the cleaning head cleaning the surface to be cleaned can be sucked into the dirty liquid container by the fluid recovery power source;

[0008] a holding part for a user to operate and hold the portable cleaning device for cleaning work;

[0009] The portable cleaning device at least has a first working position in which the height of the holding part from the ground is greater than the height of the cleaning head from the ground, and a second working position in which the height of the holding part from the ground is less than the height of the cleaning head from the ground;

[0010] The dirty liquid container is provided with an exhaust structure, the exhaust structure includes an exhaust port for adjusting the pressure of the inner cavity of the dirty liquid container, and the exhaust port is configured to be exposed above the liquid level of the dirty fluid in the dirty liquid container when the portable cleaning device is in the first working position or the second working position.

[0011] In one embodiment, the exhaust port is located in the dirty liquid container, and the exhaust structure further comprises:

[0012] a float disposed in the dirty liquid container, the exhaust port being disposed on the float;

[0013] an exhaust conduit connected to the float, one end of the exhaust conduit being in communication with the outside of the dirty liquid container and the other end of the exhaust conduit extending into the dirty liquid container and being in communication with the exhaust port, the gas in the dirty liquid container being able to be exhausted to the outside of the dirty liquid container via the exhaust port and the exhaust conduit.

[0014] In one embodiment, a counterweight is disposed on the float, the counterweight being disposed opposite the exhaust port, the buoyancy of the float being greater than or equal to the weight of the counterweight.

[0015] In one embodiment, the exhaust conduit is configured to adjust the angle of the position of the exhaust conduit with respect to the float based on the change in the capacity of the dirty water collected in the dirty liquid container, the Shore hardness of the exhaust conduit being 30A to 40A.

[0016] In one embodiment, the counterweight is disposed on the exhaust conduit.

[0017] In one embodiment, the exhaust port is formed in the dirty liquid container, the dirty liquid container provided with the exhaust port being rotatably connected to the portable cleaning apparatus so as to adjust the position of the exhaust port in response to the change in the portable cleaning apparatus between the first working position and the second working position.

[0018] In one embodiment, the portable cleaning apparatus further comprises a liquid supply mechanism, the liquid supply mechanism comprising: a fluid container configured to hold a cleaning fluid;

[0019] a gravity unit disposed in the fluid container, the gravity unit being provided with a liquid suction hole;

[0020] a liquid supply pump configured to provide power for loading the cleaning fluid to the cleaning head;

[0021] a liquid supply conduit connected to the liquid suction hole, the liquid supply pump and the liquid supply conduit being configured to deliver the liquid to the cleaning head; wherein the buoyancy of the gravity unit is less than the weight of the gravity unit.

[0022] In one embodiment, the cleaning head comprises a cleaning head housing, a cleaning brush rotatably connected to the cleaning head housing about an axis, and a stain removal unit disposed in the cleaning head housing, the stain removal unit being configured to act on the cleaning brush.

[0023] The portable cleaning apparatus further comprises a dirty liquid containing cavity arranged upstream of the dirty liquid container for collecting the dirty liquid removed from the cleaning brush by the decontamination unit as a first collection region.

[0024] In one embodiment, the dirty liquid containing cavity is provided with a dirty liquid outlet at each end thereof for recovering the dirty liquid in the dirty liquid containing cavity, and the cleaning head has a first use posture in which one end of the dirty liquid containing cavity is higher than the other end in the direction of gravity, and in the first use posture, the dirty liquid outlet at the end of the dirty liquid containing cavity away from the higher end is configured to be in communication with the fluid recovery power source.

[0025] In one embodiment, the portable cleaning apparatus further comprises a second use posture in which the dirty liquid outlets at the two ends of the dirty liquid containing cavity are substantially at the same level, and the portable cleaning apparatus has at least the dirty liquid outlet at one end of the dirty liquid containing cavity configured to allow the dirty liquid generated by the cleaning brush to flow therethrough in both the first use posture and the second use posture.

[0026] In one embodiment, in the second use posture, the dirty liquid outlets at the two ends of the dirty liquid containing cavity are both fully open to the passage of the fluid recovery power source.

[0027] In one embodiment, the fluid recovery power source comprises a liquid discharge pump configured to allow the dirty liquid to flow therethrough and be pumped into the dirty liquid container, and the liquid discharge pump is one, the liquid inlet of the liquid discharge pump is configured to be in communication with at least one of the dirty liquid outlets at the two ends, and the liquid outlet of the liquid discharge pump is in communication with the dirty liquid container; or

[0028] The fluid recovery power source comprises an air pump or a fan configured to allow the dirty liquid to be pumped into the dirty liquid container through a recovery pipeline, and the recovery pipeline is configured to be in communication with at least one of the dirty liquid outlets at the two ends.

[0029] In one embodiment, the portable cleaning apparatus further comprises a blocking mechanism configured to close the passage of the dirty liquid outlet at one end of the dirty liquid containing cavity to the fluid recovery power source and open the passage of the dirty liquid outlet at the other end of the dirty liquid containing cavity away from the higher position to the fluid recovery power source.

[0030] In one embodiment, the blocking mechanism comprises a blocking member slidingly connected to the cleaning head along the length direction of the dirty liquid containing cavity for blocking the corresponding dirty liquid outlet; and

[0031] An actuating portion movably connected to the cleaning head along a length direction of the dirty liquid accommodating cavity and configured to move in response to different use postures of the portable cleaning apparatus;

[0032] The actuating portion is configured to act on the blocking member during movement to drive the blocking member to move in the preset direction, so that the blocking member can at least partially block the corresponding dirty liquid outlet.

[0033] In one embodiment, the blocking mechanism further comprises an elastic member, one end of the elastic member being connected to the cleaning head housing and the other end being connected to the blocking member, the elastic member being configured to provide an elastic force to make the blocking member have a tendency to move in a direction opposite to the preset direction.

[0034] In one embodiment, when the portable cleaning apparatus is in the second use posture, the blocking member is kept completely misaligned with the dirty liquid outlet under the action of the elastic member.

[0035] When the portable cleaning apparatus is in the first use posture, the blocking member can move in the preset direction against the elastic force of the elastic member under the action of the actuating portion, thereby at least partially blocking the dirty liquid outlet.

[0036] In one embodiment, the blocking mechanism comprises a three-way pipe and a blocking device, and the dirty liquid accommodating cavity is provided with two dirty liquid outlets at two ends along a length direction of the cleaning head.

[0037] The three-way pipe has a first return branch and a second return branch respectively communicating with the two dirty liquid outlets, and a converging branch communicating with the first return branch and the second return branch, and the converging branch communicates with the dirty liquid container.

[0038] The blocking device is arranged in the three-way pipe and is configured to keep still in response to the posture of the portable cleaning apparatus to communicate all branches of the three-way pipe or alternatively close the first return branch and the second return branch.

[0039] In one embodiment, the portable cleaning apparatus further comprises an angle sensor and a controller.

[0040] The blocking device is in communication with the controller, and the controller is configured to determine the posture of the portable cleaning apparatus based on a detection result of the angle sensor and control the blocking device to keep still to communicate all branches of the three-way pipe or alternatively close the first return branch and the second return branch.

[0041] In one embodiment, the occlusion device comprises two valves, which are respectively installed in the first return branch and the second return branch;

[0042] The two valves reciprocate between the first return branch and the second return branch to selectively close the first return branch and the second return branch.

[0043] In one embodiment, the recovery pipeline is configured as a three-way pipeline, which comprises a first return branch, a second return branch and a converging branch connected with the first return branch and the second return branch. The first return branch and the second return branch are respectively connected with the effluent outlets at two ends of the effluent container. The converging branch is connected with the effluent container. The occlusion mechanism can occlude the passage between one of the first return branch and the second return branch and the fluid recovery power source.

[0044] In one embodiment, the occlusion mechanism comprises a three-way valve, which comprises two inlet ports respectively connected with the first return branch and the second return branch, and one outlet port connected with the converging branch. The three-way valve has an inner cavity, and the two inlet ports and the outlet port are respectively connected with the inner cavity. The inner cavity is provided with:

[0045] Two movable members respectively used to occlude the passages between the two inlet ports and the first return branch and the second return branch;

[0046] At least one driving unit between the two movable members;

[0047] Under the action of gravity, the driving unit can drive the movable member to occlude the corresponding inlet port.

[0048] In one embodiment, the driving unit is two, which is located between the two movable members. In the state that one of the movable members occludes the corresponding inlet port, the other movable member is separated from the corresponding inlet port, and the outlet port is connected with the other inlet port.

[0049] In one embodiment, the driving unit is one, which is located between the two movable members. The valve body is connected with a swing rod, which is connected with the driving unit. Under the swing action of the swing rod, the swing rod can drive the driving unit to move towards one of the movable members to occlude the corresponding inlet port, while the other movable member is away from the inlet port.

[0050] In one embodiment, the inner wall of the valve body is formed with a tapered portion for the movable key to move towards the corresponding inlet pipe.

[0051] In one embodiment, the fluid recovery power source comprises two liquid discharge pumps, the liquid inlets of the two liquid discharge pumps are respectively connected to the liquid outlets at two ends of the dirty liquid accommodating cavity, and the liquid outlets of the two liquid discharge pumps are respectively connected to the dirty liquid container.

[0052] In one embodiment, the dirty liquid accommodating cavity is provided with a liquid outlet at each end along the length direction of the cleaning head, the dirty liquid container comprises a first chamber and a second chamber which are independent and not connected to each other, the two liquid outlets are respectively connected to the first chamber and the second chamber through a first fluid recovery pipeline and a second fluid recovery pipeline, and the fluid recovery power source comprises two air pumps or fans, the air inlets of the two air pumps or fans are respectively connected to the first chamber and the second chamber through a negative pressure suction pipeline.

[0053] In one embodiment, the dirty liquid accommodating cavity has an open end for receiving dirty liquid and a closed end opposite to the open end, the closed end has a first flow guide surface and a second flow guide surface, and the distance between the side edge connecting the first flow guide surface and the second flow guide surface and the open end is smaller than the distance between the side edge away from the first flow guide surface and the second flow guide surface and the open end.

[0054] In one embodiment, the gas in the dirty liquid container is connected to the dirty liquid accommodating cavity through a negative pressure exhaust pipeline, and the connection of the negative pressure exhaust pipeline to the dirty liquid accommodating cavity is located at the junction of the first flow guide surface and the second flow guide surface.

[0055] In one embodiment, the portable cleaning device further comprises a longitudinal holding rod, the cleaning head is arranged at one end of the holding rod, the dirty liquid container and the fluid container are arranged at intervals along the longitudinal direction of the holding rod, and the dirty liquid container is arranged closer to the cleaning head.

[0056] The application further provides a portable cleaning device, comprising a cleaning head;

[0057] a fluid recovery mechanism having a dirty liquid container, a fluid recovery power source, and a motor for driving the fluid recovery power source to perform suction movement, and the dirty liquid on the cleaning head can be sucked into the dirty liquid container by the fluid recovery power source;

[0058] a holding portion for a user to hold and operate the portable cleaning device for cleaning operation;

[0059] The portable cleaning device comprises a first working position in which the height of the holding portion from the ground is greater than the height of the cleaning head from the ground and a second working position in which the height of the holding portion from the ground is less than the height of the cleaning head from the ground.

[0060] In the first working position or the second working position, the dirty fluid can be kept in the dirty fluid container when the dirty fluid container is not full.

[0061] In one embodiment, the volume of the dirty fluid in the dirty fluid container is greater than or equal to 1 / 4 of the volume of the dirty fluid container and less than the volume of the dirty fluid container, and the dirty fluid contained in the dirty fluid container can be kept in the dirty fluid container.

[0062] In one embodiment, the motor electrically connected to the fluid recovery power source can be in electrical communication.

[0063] The portable cleaning device of the present application can break the limitations of the application scenarios of traditional portable pressure cleaning devices, realize multi-surface, multi-angle and multi-dimensional complex working condition cleaning, and has better cleaning effect with lower requirements for water quantity and water pressure compared with traditional portable cleaning devices. At the same time, the portable cleaning device can effectively collect sewage to avoid the occurrence of "secondary pollution" and improve the operation convenience and cleaning effect of the portable cleaning device. BRIEF DESCRIPTION OF DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0065] Figure 1 The first schematic diagram for a user of the present application to operate the portable cleaning device for cleaning work, in which the distance between the cleaning head and the ground is less than the distance between the holding portion and the ground, and one end of the dirty fluid containing cavity is in a raised position and the other end is in a depressed position.

[0066] Figure 2 The second schematic diagram for a user of the present application to operate the portable cleaning device for cleaning work, in which Figure 1 , the distance between the cleaning head and the ground is less than the distance between the holding portion and the ground, and one end of the dirty fluid containing cavity is in a raised position and the other end is in a depressed position.

[0067] Figure 3The third schematic diagram of the portable cleaning device in use by a user for cleaning a vertical surface with the cleaning head in a cleaning position and the dirty liquid holding chamber in a raised position at one end and a depressed position at the other end.

[0068] Figure 4 The fourth schematic diagram of the portable cleaning device in use by a user for cleaning.

[0069] Figure 5 The fifth schematic diagram of the portable cleaning device in use by a user for cleaning. In this diagram, the cleaning head is at approximately the same height as the holding pole.

[0070] Figure 6 The sixth schematic diagram of the portable cleaning device in use by a user for cleaning. In this diagram, the two ends of the dirty liquid holding chamber are at approximately the same height.

[0071] Figure 7 The seventh schematic diagram of the portable cleaning device in use by a user for cleaning. In this diagram, the two ends of the dirty liquid holding chamber are at approximately the same height.

[0072] Figure 8 The eighth schematic diagram of the portable cleaning device in use by a user for cleaning. In this diagram, the cleaning head is above the holding pole.

[0073] Figure 9 The schematic diagram of the portable cleaning device of the present application.

[0074] Figure 10 The schematic diagram of the portable cleaning device of the present application. Figure 9 The schematic diagram of the portable cleaning device of the present application.

[0075] Figure 11 The schematic diagram of the portable cleaning device of the present application. Figure 10 The schematic diagram of the portable cleaning device of the present application.

[0076] Figure 12 The schematic diagram of the portable cleaning device of the present application.

[0077] Figure 13 The schematic diagram of the portable cleaning device of the present application.

[0078] Figure 14 The schematic diagram of the portable cleaning device of the present application.

[0079] Figure 15 The schematic diagram of the portable cleaning device of the present application.

[0080] Figure 16A structural schematic diagram of the portable cleaning apparatus of the present application without the retaining rod housing.

[0081] Figure 17 A structural schematic diagram of the portable cleaning apparatus of the present application without the retaining rod housing from another perspective.

[0082] Figure 18 A structural schematic diagram of the portable cleaning apparatus of the present application without the retaining rod housing. Figure 17 A partial enlarged view of B shown in the figure.

[0083] Figure 19 A structural schematic diagram of the cleaning head in an embodiment of the present application.

[0084] Figure 20 A structural schematic diagram of the cleaning head in an embodiment of the present application. Figure 19 A partial sectional schematic diagram of the cleaning head shown in the figure.

[0085] Figure 21 A structural schematic diagram of the portable cleaning apparatus in an embodiment of the present application.

[0086] Figure 22 A structural schematic diagram of the portable cleaning apparatus in an embodiment of the present application. Figure 21 A schematic diagram of the relative relationship among the cleaning roller, the stain removal unit and the stain liquid containing cavity of the portable cleaning apparatus shown in the figure.

[0087] Figure 23 A structural schematic diagram of the portable cleaning apparatus of the present application without the retaining rod housing, wherein the cleaning head is provided with two stain liquid outlets, the fluid recovery power source comprises one liquid discharge pump, and a connection circuit schematic diagram of the cleaning head, the liquid discharge pump and the stain liquid container.

[0088] Figure 24 A structural schematic diagram of the portable cleaning apparatus of the present application without the retaining rod housing, wherein the cleaning head is provided with two stain liquid outlets, the fluid recovery power source comprises two air pumps, and a connection circuit schematic diagram of the cleaning head, the air pump and the stain liquid container.

[0089] Figure 25 A structural schematic diagram of the portable cleaning apparatus of the present application without the retaining rod housing, wherein the cleaning head is provided with two stain liquid outlets, the fluid recovery power source comprises one air blower, and a connection circuit schematic diagram of the cleaning head, the air blower and the stain liquid container.

[0090] Figure 26 A structural schematic diagram of an embodiment of the sealing mechanism of the portable cleaning apparatus of the present application.

[0091] Figure 27 A structural schematic diagram of an embodiment of the sealing mechanism of the portable cleaning apparatus of the present application.

[0092] Figure 28 A structural schematic diagram of another embodiment of the sealing mechanism of the portable cleaning apparatus of the present application.

[0093] Figure 29 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0094] Figure 30 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0095] Figure 31 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application. Figure 30 Use state of the sealing mechanism of the portable cleaning device of the present application Figure 1 .

[0096] Figure 32 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application. Figure 30 Use state of the sealing mechanism of the portable cleaning device of the present application Figure 2 .

[0097] Figure 33 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application. Figure 30 Use state of the sealing mechanism of the portable cleaning device of the present application Figure 3 .

[0098] Figure 34 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application. Figure 30 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0099] Figure 35 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0100] Figure 36 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0101] Figure 37 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0102] Figure 38 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0103] Figure 39 Structure diagram of another embodiment of the sealing mechanism of the portable cleaning device of the present application.

[0104] BRIEF DESCRIPTION OF DRAWINGS

[0105] 10, holding rod; 12, holding part; 126, first flow guide surface; 127, second flow guide surface; 14, operating element; 16, self-adapting joint;

[0106] 20, cleaning head; 22, cleaning head housing; 220, open end; 221, closed end; 222, dirty liquid accommodating cavity; 223, connecting wall; 224, dirty liquid outlet; 2241, first dirty liquid outlet; 2242, second dirty liquid outlet; 225, body; 226, retaining portion; 232, first backflow branch; 233, second backflow branch; 234, converging branch; 24, cleaning brush; 26, liquid spray pipe; 262, liquid spray hole; 27, three-way valve; 271, valve body; 2711, inner cavity; 2712, tapered portion; 272, inlet pipe port; 273, outlet pipe port; 274, movable member; 275, drive unit; 276, swing rod; 277, swing hammer; 28, stain removal unit; 29, blocking mechanism; 291, pull rope; 292, blocking member; 293, connecting portion; 294, actuating portion; 295, positioning column; 296, elastic member;

[0107] 30, fluid container; 32, liquid supply pump; 342, gravity unit; 344, liquid supply pipeline;

[0108] 40, dirty liquid container; 42, first chamber; 44, second chamber;

[0109] 50, battery pack; 52, liquid discharge pump; 540, air cavity; 542, air blower; 544, air pump; 546, air suction float ball; 5462, first air suction float ball; 5464, second air suction float ball; 547, air duct port; 548, counterweight; 5482, first counterweight; 5484, second counterweight; 549, negative pressure suction pipeline; 56, blocking device; 58, electromagnetic valve;

[0110] 62, float; 622, air outlet; 64, counterweight; 66, air discharge pipeline;

[0111] 70, dirty fluid; 80, angle sensor; 90, controller; 100, automobile; 101, ground;

[0112] X, length direction; Y, longitudinal direction; Z, vertical direction; C, center; L1, first position; L2, second position. DETAILED DESCRIPTION

[0113] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It is to be understood that other specific arrangements can be utilized or certain terminologies can be changed without departing from the spirit or scope of the present application.

[0114] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0115] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0116] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0117] In this application, "above", "over" and "on" of the first feature to the second feature can be directly above or obliquely above the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. "Below", "under" and "under" of the first feature to the second feature can be directly below or obliquely below the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0118] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not indicate the only implementation.

[0119] In recent years, with the continuous improvement of people's living standards, cars have entered thousands of households and become a daily means of transportation for families. Therefore, the demand for car cleaning is also increasing. The common car washing methods at present are: manual car washing in car washing room, automatic computer car washing, household car washer car washing, and steam car washing. Whether it is manual car washing in car washing room or automatic computer car washing, they all face the problems of long distance from car washing place to car owner's residence, queuing and waiting, and large water consumption, which not only wastes water resources and time, but also has high car washing cost. Household car washer needs at least one bucket of water, which is not convenient to carry upstairs and downstairs, and also adds a lot of trouble for users each time they wash the car, causing disturbance, which is not suitable for urban population. There is also a manual air pump as a power source for a water spray type household car washer, which not only has the above shortcomings, but also is time-consuming and laborious, and is very inconvenient to use. Water-saving steam car washing has high equipment price, large volume, and is not convenient to carry, and needs large heat source energy, currently using gas and high-power electric heating, which brings safety hazards.

[0120] In the related art, a portable pressure cleaning device emerges as the times require, which generally generates high-pressure water flow through, for example, a plunger pump to flush the surface of an object. Although, compared with the aforementioned cleaning method, the portable pressure cleaning device reduces water consumption to a certain extent. However, the current portable pressure cleaning device integrates the pump, motor, battery pack and spray gun in one body, and the demand for water quantity and water pressure is still high in order to achieve better cleaning effect, and a pump and motor with high power need to be selected. And in the cleaning process, the selection of a pump and motor with high power means that the endurance time will be reduced, in order to solve this problem, the capacity of the power supply battery pack is usually increased, which increases the weight of the machine, and the user holds it more laboriously, and the experience of human-computer interaction is not good.

[0121] In addition, the portable pressure cleaning device cannot be effectively used when cleaning, for example, a car, a kitchen and bathroom, and a wall. Specifically, for example, in some cleaning scenarios, multi-angle and multi-cleaning surface cleaning is required, and the aforementioned portable pressure cleaning device still cannot effectively approach each cleaning surface to be cleaned, such as a roof or a cleaning surface that is prohibited from being cleaned by using a pressure water flow. For another example, in some other cleaning scenarios, the user needs to hold the portable pressure cleaning device and control the multi-angle cleaning of the portable pressure cleaning device, which means that the user needs to overcome the backwash force of the pressure water flow and the gravity of the portable pressure cleaning device, and the operation experience is not good, and the single pressure water flow cleaning effect is not good, and the user needs to use a cleaning cloth to clean, which is time-consuming and laborious. In some other cleaning scenarios, after the dirt is stripped by the pressure water flow of the pressure cleaning device, the dirt will flow down with the water flow, so that the surface that is not dirty or has been cleaned will be contaminated and needs to be cleaned again. In addition, the user is limited in the place for washing the car in the city, and the water source is difficult to guarantee, and in addition, the cleaning of the sewage after washing the car is also a problem that troubles the user. In this way, the operation convenience and the cleaning effect of the traditional portable pressure cleaning device are limited.

[0122] Therefore, it is necessary to provide a portable cleaning device, which can break the limitation of the application scenario of the traditional portable pressure cleaning device, realize multi-cleaning surface and multi-angle "multi-dimensional" complex working condition cleaning, and has a better cleaning effect with lower requirements for water quantity and water pressure compared with the traditional portable cleaning device. At the same time, the sewage can be effectively collected to avoid the "secondary pollution" and improve the operation convenience and the cleaning effect of the portable cleaning device.

[0123] In the embodiments of the present application, the structure of the portable cleaning device in the present application is described by taking a cleaning device for cleaning a vehicle as an example. In other embodiments, the portable cleaning device can also be used to clean doors and windows, walls, floor-to-ceiling glass and other target objects. Therefore, the embodiments are only used as an example for illustration, and do not limit the technical scope of the present application.

[0124] In the embodiments of the present application, "multi-cleaning surface" can be understood as that the cleaning head 20 of the portable cleaning device can clean horizontal surfaces, slope surfaces, vertical surfaces and the like. In the implementation of cleaning different multi-working condition surfaces, the cleaning head 20 of the portable cleaning device will present a plurality of different use postures, for example, please refer to Figure 1 、 Figure 3 、 Figure 5 For example, please refer to Figure 9 If the horizontal surface (ground) is taken as a reference plane, the angle of the length direction X of the cleaning head 20 relative to the horizontal surface can be any angle, that is, the two ends of the length direction X of the cleaning head 20 are different in the vertical direction Z (that is, the direction of gravity) because of the different slopes of different cleaning surfaces.

[0125] "multi-angle" can be understood as the portable cleaning device having multiple working positions in which the distance between the hand-held end of the portable cleaning device held by the user and the ground 101 and the distance between the cleaning head and the ground 101 present different results when the portable cleaning device is actually used for cleaning. For example, the user can hold the handle 12, and the cleaning head 20 as a whole can be in an upper position (as shown in Figure 8 , a lower position (as shown in Figure 1 , or the cleaning head can be at about the same height as the handle 12 (as shown in Figure 2 , etc. during cleaning, and the above three use modes can be used in combination. Figure 5

[0126] As shown in Figure 8 , the cleaning head 20 as a whole can be lifted in the vertical direction Z relative to the handle 12, and one end of the cleaning head 20 in the length direction X (e.g. the end close to the inner side of the drawing plane in Figure 8 ) can be lifted in the vertical direction Z relative to the other end of the cleaning head 20 so that the length direction X of the cleaning head 20 forms an angle with the horizontal plane.

[0127] As shown in Figure 9 and Figure 10 , the present application provides a portable cleaning device, which comprises a cleaning head 20, a fluid recovery mechanism having a dirty liquid container 40 and a fluid recovery power source, the dirty fluid 70 generated by the cleaning head 20 during cleaning of a surface to be cleaned can be sucked into the dirty liquid container 40 by the fluid recovery power source, a handle 12 for the user to hold and operate the portable cleaning device for cleaning work, and the portable cleaning device has at least a first working position (as shown in Figure 2 ) in which the height of the handle 12 from the ground is greater than the height of the cleaning head 20 from the ground, and a second working position (as shown in Figure 8 ) in which the height of the handle 12 from the ground is less than the height of the cleaning head 20 from the ground; wherein the dirty liquid container 40 is provided with an exhaust structure, the exhaust structure comprises an exhaust port 622 for adjusting the pressure of the inner cavity of the dirty liquid container 40, and the exhaust port 622 is configured to be exposed above the liquid level of the dirty fluid in the dirty liquid container 40 when the portable cleaning device is in the first working position or the second working position.

[0128] The portable cleaning device of the present application is used to perform cleaning work. As shown in Figure 9 ​As shown, one end of the cleaning head 20 is defined as the front end (distal end), for example, the front end of the portable cleaning apparatus refers to the end far away from the user when the user uses the portable cleaning apparatus to perform cleaning work. Correspondingly, the holding portion 12 held by the user is defined as the rear end (proximal end), for example, the proximal end of the portable cleaning apparatus refers to the end close to the user when the user uses the portable cleaning apparatus to perform cleaning work. It can be understood that the above definitions are only for illustration and cannot be understood as a limitation of the present application.

[0129] Specifically, as shown, Figure 9 The portable cleaning apparatus of the present application comprises a holding rod 10 extending in a longitudinal direction Y between a front end and a rear end, the cleaning head 20 is arranged at the front end of the holding rod 10, and the rear end of the holding rod 10 is the holding portion 12 for the user to hold and operate. In the present embodiment, one or more operating elements 14 are arranged on the holding portion 12, and the user can control the portable cleaning apparatus to be in a working state or a non-working state through the operating elements 14, for example, the user can control the mode of the portable cleaning apparatus through the operating elements 14. The dirty liquid container 40 is used to collect the dirty fluid 70 generated by the cleaning head 20 when cleaning the surface to be cleaned. It can be understood that in some other embodiments, the holding portion 12 is not necessarily at the rear end of the holding rod 10, for example, it can be arranged near the rear end of the holding rod 10, which is not limited herein.

[0130] The holding rod 10 comprises a holding rod shell (not labeled in the figure), and functional components such as a fluid recovery power source for recovering the dirty fluid 70 generated by the cleaning head 20 to the dirty liquid container 40 and pipelines with different functions such as recovery pipelines are arranged in the holding rod shell in a protected manner. In the present embodiment, the dirty liquid container 40 is detachably connected to the holding rod shell, and of course in another embodiment, the dirty liquid container 40 can also be integrally formed on the holding rod shell, for example, the holding rod shell is an injection molded part, and the dirty liquid container 40 is formed during the injection molding process, which is not limited herein.

[0131] The cleaning head 20 can be fixed to the front end of the holding rod 10, and of course, the cleaning head 20 can also be movably connected to the front end of the holding rod 10, but considering the winding problem of the pipeline connecting the cleaning head 20 and the dirty liquid container 40, preferably, the cleaning head 20 should be limited within a certain range of movement. For example, in the embodiment, the cleaning head 20 is pivotally connected to the front end of the holding rod shell through a hinge around a pivot axis, so that the cleaning head 20 can swing within a predetermined range, and the swingability of the cleaning head 20 around the pivot axis can also achieve better cleaning possibility at a difficult-to-reach position, that is, to some extent, the cleaning device can change the posture relative to the surface to be cleaned, thereby achieving better cleaning effect. Specifically, the pivot axis is arranged transversely to the longitudinal axis of the holding rod 10, for example, in some embodiments, the pivot axis is perpendicular to the longitudinal axis of the holding rod 10, and in other embodiments, the pivot axis can also be arranged at an acute angle with the longitudinal axis of the holding rod 10 to adapt to the "multi-dimensional" cleaning working condition of multiple angles and multiple cleaning surfaces. Further, the holding rod shell can also be provided with a locking device for locking the cleaning head 20 on the holding rod shell, so that the cleaning head 20 cannot rotate relative to the holding rod shell.

[0132] The fluid recovery mechanism of the present application is used to suck the dirty fluid 70 generated by the cleaning head 20 cleaning the surface to be cleaned into the dirty liquid container 40, and specifically, the dirty fluid 70 is sucked into the dirty liquid container 40 by the fluid recovery power source.

[0133] In the present application, the dirty liquid container 40 is provided with an exhaust structure, which includes an exhaust port 622 capable of adjusting the pressure of the inner cavity of the dirty liquid container 40. The portable cleaning device is in the first working position or the second working position, and the exhaust port 622 is configured to be exposed above the liquid level of the dirty fluid in the dirty liquid container 40.

[0134] The portable cleaning device of the present application can break through the limitations of the application scene of traditional portable pressure cleaning devices, realize multi-angle complex working condition cleaning, and has better cleaning effect. At the same time, it can effectively collect sewage and avoid the occurrence of "secondary pollution", thereby improving the operation convenience and cleaning effect of the portable cleaning device.

[0135] According to one embodiment of the present application, in one feasible embodiment of the exhaust structure, as shown in Figure 10 the exhaust port 622 is located in the dirty liquid container 40, and the exhaust structure further includes: a float 62 located in the dirty liquid container 40, the exhaust port 622 being arranged on the float 62; an exhaust pipeline 66 connected with the float 62, one end of the exhaust pipeline 66 being in communication with the outside of the dirty liquid container 40, and the other end of the exhaust pipeline 66 extending into the dirty liquid container 40 and being in communication with the exhaust port 622, and the gas in the dirty liquid container 40 being capable of being discharged to the outside of the dirty liquid container 40 through the exhaust port 622 and the exhaust pipeline 66.

[0136] Specifically, the float 62 is provided with a counterweight 64, the counterweight 64 is arranged opposite to the exhaust port 622, the buoyancy of the float 62 is greater than or equal to the gravity of the counterweight 64. It should be understood that when the dirty fluid 70 is continuously transported into the dirty liquid container 40, the float 62 will float with the liquid surface of the dirty fluid 70, and due to the change of the posture of the user operating the portable cleaning device, the dirty fluid 70 is easy to overflow by entering the exhaust pipeline 66 through the exhaust port 622, which affects the user experience. The counterweight 64 is opposite to the exhaust port 622 on the float 62, no matter how the working position of the portable cleaning device changes, as shown, the exhaust port 622 on the float 62 is always upward due to the restriction of the counterweight 64, thereby avoiding the dirty fluid 70 entering the exhaust port 622 to cause the dirty fluid to overflow. In this way, the air pressure in the dirty liquid container 40 can be kept stable, avoiding the air pressure in the dirty liquid container 40 being too large to cause the dirty fluid 70 to backflow, and avoiding a large amount of dirty fluid 70 overflowing through the exhaust pipeline 66, thereby improving the user experience and the safety and reliability of the machine. Figure 11

[0137] In another embodiment, as shown in the accompanying drawings, one end of the exhaust pipeline 66 penetrates into the float 62 along the radial direction of the float 62 and extends to the exhaust port 622, and the counterweight 64 is arranged on the exhaust pipeline 66. Figure 10

[0138] Specifically, the other end of the exhaust pipeline 66 penetrates into the float 62 along the radial direction of the float 62 and extends to the exhaust port 622, and the counterweight 64 is arranged on the exhaust pipeline 66, for example, in the embodiment, the counterweight 64 can be sleeved on the exhaust pipeline 66. It is easy to understand that the float 62 is light in quality, for example, it can be made of plastic or other fiber materials, and the counterweight 64 is heavy in quality, for example, it is usually made of metal materials. Therefore, in the specific implementation, one end of the exhaust pipeline 66 penetrates into the float 62 and extends to the exhaust port 622, on the one hand, it avoids a small amount of dirty fluid entering the exhaust pipeline 66 from the exhaust port 622 into the float 62, and on the other hand, it is convenient to fix the position of the counterweight 64, so that the exhaust port 622 is opposite to the counterweight 64.

[0139] Although not wishing to be limited by theory, the inventors have found that the float 62 is restricted by the counterweight 64 to make the exhaust port 622 upward, but in the switching of the portable cleaning device at multiple angles, the exhaust pipeline 66 may still be affected by the dirty fluid to swing and pull the float 62, causing the exhaust port 622 to be submerged or close to the liquid surface of the dirty fluid 70.

[0140] ​​Therefore, the exhaust pipe 66 is configured to adjust its position angle with the float 62 based on the change of the dirty water volume collected in the dirty water container 40, and the Shore hardness of the exhaust pipe 66 is 30A-40A. The exhaust pipe 66 is elastically configured so that the part of the exhaust pipe 66 extending into the dirty water container 40 can swing with the float 62, thereby avoiding the exhaust pipe 66 "pulling" the float 62 and causing the exhaust port 622 to be submerged in the dirty fluid 70.

[0141] Further research shows that the material properties of the exhaust pipe 66, such as hardness, and the mechanical size of the exhaust pipe 66, such as diameter, directly affect whether the exhaust pipe 66 can swing with the float 62, and at the same time, the exhaust rate and exhaust flow of the exhaust pipe 66 also need to be considered. Therefore, the inventors found that when the diameter of the exhaust pipe 66 is greater than or equal to 2 mm, and the Shore hardness of the exhaust pipe 66 is 30A-40A, the exhaust pipe 66 can swing with the float 62, and the exhaust pipe 66 will not pull the float 62 to move the float 62. In this way, on the one hand, it can avoid the exhaust port 622 being submerged or close to the liquid surface of the dirty fluid 70, and on the other hand, it can ensure the exhaust rate and exhaust flow to keep the air pressure in the dirty water container 40 stable. Preferably, the diameter of the exhaust pipe 66 is 3 mm.

[0142] In another possible embodiment of the exhaust structure, as shown in Figure 12 The exhaust port 622 is provided on the dirty water container 40, and the dirty water container 40 provided with the exhaust port 622 is rotatably / displaceably connected to the portable cleaning device to adjust the position of the exhaust port 622 in response to the change of the portable cleaning device between the first working position and the second working position.

[0143] Specifically, the holding rod 10 is provided with an adaptive joint 16, and the dirty water container 40 is connected to the holding rod 10 through the adaptive joint 16, so that the exhaust port 622 on the dirty water container 40 is located above the liquid surface of the dirty fluid in the dirty water container 40. In this way, in "multi-angle" cleaning, the backflow and leakage of the dirty fluid 70 are prevented.

[0144] In this application, in different working positions of the portable cleaning device, in principle, the exhaust port is always exposed above the liquid surface of the dirty fluid 70 in the dirty water container 40. Of course, the applicant needs to emphasize that for the case where the dirty water container 40 is full of dirty fluid 70 and the exhaust port 622 is submerged in the dirty fluid 70, and for the case where the portable cleaning device changes its position instantaneously and the exhaust port 622 is submerged for a moment, in other cases, the exhaust port 622 is basically exposed above the liquid surface of the dirty fluid 70 in the dirty water container 40, which should be understood as covered by this application.

[0145] According to one embodiment of the present application, as shown in Figure 13 The portable cleaning device further comprises a liquid supply mechanism, which comprises: a fluid container 30 capable of containing cleaning fluid; a gravity unit 342 provided in the fluid container 30, wherein the gravity unit 342 is provided with a liquid suction hole; a liquid supply pump 32 configured to provide power for loading cleaning fluid to the cleaning head 20; a liquid supply motor (not labeled) configured to drive the liquid supply pump 32 to work; and a liquid supply pipeline 344 connected to the liquid suction hole, wherein the liquid supply pump 32 is configured to deliver liquid to the cleaning head 20 through the liquid supply pipeline 344; and wherein the buoyancy of the gravity unit 342 is less than the gravity of the gravity unit 342.

[0146] Specifically, as shown in Figure 14 and Figure 15 The gravity unit 342 comprises a gravity float ball provided with a liquid suction hole (not shown in the figure), the gravity float ball is arranged in the fluid container 30, one end of the liquid supply pipeline 344 is connected to the gravity unit 342, and the other end of the liquid supply pipeline 344 is connected to the cleaning head 20, the liquid supply pump 32 is connected to the gravity unit 342 through the pipeline, and is configured to provide fluid power for loading cleaning fluid to the cleaning head 20, so as to wet the cleaning head 20 and facilitate the cleaning head 20 to clean the surface to be cleaned.

[0147] The buoyancy of the gravity unit 342 is less than the gravity of the gravity unit 342, so that the gravity unit 342 is always below the liquid level of the cleaning fluid, thereby ensuring that the cleaning head 20 can be supplied with cleaning fluid required for cleaning in a multi-dimensional posture of the cleaning device, so as to realize multi-surface cleaning and multi-angle "multi-dimensional" cleaning.

[0148] Further, the liquid supply pipeline 344 is elastically configured, so that the part of the liquid supply pipeline 344 extending into the fluid container 30 can be deformed with the floating of the gravity unit 342, so that the liquid suction hole is kept below the liquid level of the cleaning fluid in the fluid container 30, thereby realizing uninterrupted liquid supply. In this embodiment, the liquid supply pipeline 344 is a silica gel hose.

[0149] The liquid supply mechanism of the present application can uninterruptedly supply cleaning fluid to the cleaning head 20 in the multi-dimensional operation of the portable cleaning device, thereby improving the use convenience of the portable cleaning device. In addition, by arranging the gravity unit 342, the liquid suction hole can be ensured to be always below the liquid level of the cleaning fluid in the fluid container 30, thereby effectively ensuring the smooth supply of cleaning fluid.

[0150] According to one embodiment of the present application, as shown in Figure 16 , Figure 17 and Figure 21As shown, the cleaning head 20 comprises a cleaning head housing 22, a cleaning brush 24 rotatably connected to the cleaning head housing 22 about an axis, and a decontamination unit 28 disposed in the cleaning head housing 22 and configured to act on the cleaning brush 24. The portable cleaning apparatus further comprises a dirty fluid containing cavity 222 disposed upstream of the dirty fluid container 40 for collecting the dirty fluid 70 removed from the cleaning brush 24 by the decontamination unit 28 as a first collection area.

[0151] The fluid recycling power source of the present application can recycle the dirty fluid collected in the first collection area into the dirty fluid container 40, which can be understood as a second collection area of the portable cleaning apparatus of the present application.

[0152] Specifically, please refer to Figure 18 As shown, the cleaning head 20 comprises a cleaning head housing 22 and a cleaning brush 24 having a rotation axis, the cleaning brush 24 is rotatably connected to the cleaning head housing 22 about the rotation axis, and the portable cleaning apparatus is placed on the surface to be cleaned and supported on the surface to be cleaned only by the cleaning brush 24 during the cleaning process. The operator holds the handle 12 to operate the portable cleaning apparatus, wherein the operator is standing during normal operation, and the operator can adjust the posture of the portable cleaning apparatus relative to the surface to be cleaned to achieve multi-angle, multi-surface cleaning.

[0153] As shown in Figure 19 and Figure 20 , the cleaning head housing 22 comprises a receiving chamber (not labeled in the figure) and an opening (not labeled in the figure) in fluid communication with the receiving chamber, the cleaning brush 24 is positioned in the cleaning head housing 22 to rotate about the rotation axis, and the longitudinal extension direction of the opening is parallel to the rotation axis, so that part of the cleaning brush 24 is received in the receiving chamber through the opening. Specifically, as shown in Figure 19 , the cleaning head housing 22 comprises a body 225 and a retaining portion 226, the receiving chamber and the opening are provided in the body 225, the retaining portion 226 extends from both ends of the body 225 to the side away from the opening, the cleaning brush 24 is transversely retained between the retaining portions 226 at both ends of the body 225 and partially received in the receiving chamber, so that the cleaning surface of the cleaning brush 24 has an exposed area exposed to the receiving chamber and a hidden area received in the receiving chamber. In some embodiments, the longitudinal length of the opening is greater than the length of the cleaning brush 24, and the width of the opening is less than the diameter of the cleaning brush 24, so that the cleaning brush 24 can be partially received in the receiving chamber.

[0154] In the present embodiment, the cleaning head 20 is further provided with a fluid loading device in the receiving chamber thereof, which is fixed to the cleaning head housing 22 and is configured to be capable of loading cleaning fluid at least in the length direction of the cleaning brush 24.

[0155] Specifically, the fluid loading device comprises a liquid spray pipe 26, which is arranged longitudinally adjacent to the cleaning brush 24, and the cleaning brush 24 is provided with a plurality of liquid spray holes 262 at a preset density, as shown in Figure 18 Preferably, the longitudinal extension direction of the liquid spray pipe 26 is parallel to the rotation axis of the cleaning brush 24, and the plurality of liquid spray holes 262 are arranged in a row along the longitudinal direction of the liquid spray pipe 26. During the rotation of the cleaning brush 24, the liquid spray holes 262 continuously spray cleaning fluid to the cleaning brush 24, so that the circumferential surface of the cleaning brush 24 is uniformly wetted, thereby ensuring the cleaning effect. It should be understood that the arrangement form of the liquid spray holes 262 can also be other, for example, a plurality of liquid spray holes 262 are densely arranged on the circumferential surface of the liquid spray pipe 26, which means that a plurality of liquid spray holes 262 are arranged in the longitudinal direction of the cleaning brush 24, and a plurality of liquid spray holes 262 are also arranged in the circumferential direction of the cleaning brush 24. As a specific embodiment, a plurality of liquid spray holes 262 are arranged in an array on the cleaning brush 24, that is, a plurality of rows of liquid spray holes 262 and a plurality of columns of liquid spray holes 262 are formed.

[0156] It is worth emphasizing that, due to the dense arrangement of a plurality of liquid spray holes 262 on the liquid spray pipe 26, the size of a single liquid spray hole 262 is smaller than the liquid spray area of the liquid spray port or liquid spray gap in the prior art, which can provide sufficient liquid spray pressure to enable the cleaning fluid to be vertically and uniformly sprayed on the cleaning brush 24, thereby saving the amount of fluid under the premise of meeting the cleaning requirements. And in work, the vertical spraying of the liquid spray holes 262 at different positions on the liquid spray pipe 26 can make the cleaning equipment have a large enough spraying area of the cleaning fluid on the cleaning brush 24 in different working positions, thereby ensuring that the cleaning brush 24 is uniformly wetted and achieving multi-angle and multi-cleaning surface "multi-dimensional" cleaning.

[0157] It should also be understood that the size of the liquid spray hole 262 affects the liquid spray pressure and liquid flow rate of the cleaning fluid. Since the capacity of the fluid container 30 and the flow rate of the liquid supply pump 32 of the portable cleaning equipment are small, in order to meet the liquid spray pressure and liquid flow rate under the premise of cleaning effect, the size and liquid flow rate of the liquid spray hole 262 should meet a certain relationship. Although not wishing to be bound by theory, the inventors of the present application have found that the diameter of the liquid spray hole 262 is 0.15-0.5 mm, and the flow rate of the liquid spray hole 262 is 60-90 ml / min, which can ensure "multi-dimensional" cleaning while having better cleaning effect.

[0158] As Figure 21 andFigure 22 As shown, the cleaning head housing 22 is provided with a dirty liquid receiving cavity 222 for receiving the dirty fluid and a dirty liquid outlet 224 communicating with the dirty liquid receiving cavity 222, the dirty liquid receiving cavity 222 is in communication with the aforementioned receiving chamber, the dirty fluid 70 generated by the cleaning brush 24 cleaning the surface to be cleaned can be transported to the dirty liquid container 40 through the dirty liquid outlet 224. Specifically, the dirty liquid receiving cavity 222 has an open end 220 adjacent to the cleaning brush 24, an opposite end 221 opposite to the open end 220, and a connecting wall 223 connecting the open end 220 and the opposite end 221. As an embodiment, the dirty liquid outlet 224 can be provided on the opposite end 221, and as another embodiment, the dirty liquid outlet 224 can also be provided on the connecting wall 223, which is not limited here.

[0159] The cleaning head 20 further comprises a decontamination unit 28 for scraping the dirty fluid 70, the decontamination unit 28 is configured to act on the cleaning brush 24 to make the dirty fluid 70 (especially water containing dirt particles) carried by the cleaning brush 24 fall off and be transported to the open end 220 of the dirty liquid receiving cavity 222, so as to transport and collect the dirty fluid 70 from the dirty liquid receiving cavity 222 to the dirty liquid container 40. Specifically, the decontamination unit 28 is located in the aforementioned receiving chamber and is arranged adjacent to the cleaning brush 24 and the dirty liquid receiving cavity 222, and is arranged between the liquid supply mechanism and the dirty liquid receiving cavity 222, the decontamination unit 28 comprises one or more members extending into the covering (bristles) of the cleaning brush 24 to a preset depth, the member is configured to be rounded or chamfered towards the circumferential surface of the cleaning brush 24, so as to guide the dirty fluid 70 to the open end 220 of the dirty liquid receiving cavity 222. It should be noted that the preset depth should be less than the thickness of the covering of the cleaning brush 24.

[0160] Further, the longitudinal extension direction of the open end 220 of the dirty liquid receiving cavity 222 is parallel to the rotation axis of the cleaning brush 24, so that the decontamination unit 28 can guide the dirty fluid 70 to the open end 220 of the dirty liquid receiving cavity 222.

[0161] According to an embodiment of the present application, the dirty liquid receiving cavity 222 is provided with a dirty liquid outlet 224 at each end thereof for recovering the dirty fluid in the dirty liquid receiving cavity 222, the cleaning head 20 has a first use posture in which one end of the dirty liquid receiving cavity 222 is higher than the other end thereof in the direction of gravity, in the first use posture, the dirty liquid outlet 224 away from the other end of the dirty liquid receiving cavity 222 at the higher position is configured to communicate with the fluid recovery power source.

[0162] Specifically, the dirty liquid outlet 224 is a first dirty liquid outlet 2241 and a second dirty liquid outlet 2242. The fluid recovery mechanism can recover the dirty fluid 70 received in the dirty liquid receiving cavity 222 through the first dirty liquid outlet 2241 and / or the second dirty liquid outlet 2242. Preferably, the number of the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 is one. Of course, the number of the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 can also be multiple respectively.

[0163] In the embodiment, the positions of the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 are configured to deviate from the center line of the dirty liquid receiving cavity 222. Specifically, the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 are located at a preset distance deviated from the center line of the dirty liquid receiving cavity 222 to both ends, and the preset distance is configured to be greater than or equal to 1 / 4 of the length of the dirty liquid receiving cavity 222. Wherein, the center line can be understood as substantially located in the middle of the length direction (X direction) of the dirty liquid receiving cavity 222. The center line is perpendicular to the rotation axis of the cleaning brush 24. Optionally, the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 are substantially symmetrical about the center line.

[0164] Further, as shown in Figure 10 、 Figure 23 、 Figure 25 and Figure 39 , the dirty fluid 70 in the dirty liquid receiving cavity 222 is recovered to the dirty liquid container 40 through the first return branch 232 and the second return branch 233. Wherein, the first return branch 232 and the second return branch 233 each include an inlet end extending into the dirty liquid receiving cavity 222 to absorb the dirty fluid.

[0165] In a feasible embodiment, as shown in Figure 39 , the dirty liquid receiving cavity 222 is provided with the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 at both ends along the length direction thereof, and the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 are configured to be formed by the inlet ends 230 of the first return branch 232 and the second return branch 233. Specifically, at least part of the first return branch 232 and the second return branch 233 extends into the dirty liquid receiving cavity 222, and the inlet ends 230 of the two return branches are fixedly connected to the opposite ends of the dirty liquid receiving cavity 222.

[0166] Optionally, in an embodiment, as shown in Figure 26 and Figure 27As shown, the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 are directly formed by the structure of the dirty liquid containing cavity 222 itself. Specifically, the dirty liquid containing cavity 222 comprises a body for collecting the dirty liquid generated by the cleaning brush 24, the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 are configured as through holes formed through the body of the dirty liquid containing cavity 222 at both ends thereof, and the fluid recovery mechanism is connected to the through holes to suck out the dirty liquid 70.

[0167] As shown in Figure 1 , Figure 3 and Figure 5 , the portable cleaning apparatus has a first use posture in which one end of the dirty liquid containing cavity 222 is in a raised position relative to the other end thereof in the direction of gravity, and a second use posture in which the dirty liquid outlets 224 at both ends of the dirty liquid containing cavity 222 are substantially at the same horizontal level. In the first use posture, the dirty liquid outlet 224 at the end of the dirty liquid containing cavity 222 in the raised position is configured to be in communication with the fluid recovery power source. The portable cleaning apparatus has the dirty liquid outlet 224 at one end of the dirty liquid containing cavity 222 configured to allow the dirty liquid generated by the cleaning brush 24 to flow therethrough in both the first use posture and the second use posture. The same horizontal level can be understood as the distance between the dirty liquid outlets 224 at both ends and the horizontal ground being the same.

[0168] As shown in Figure 23 , in an available embodiment, the fluid recovery power source comprises a liquid discharge pump 52 through which the dirty liquid 70 can flow and be sucked into the dirty liquid container 40, the liquid discharge pump 52 is one, the liquid inlet of the liquid discharge pump 52 is in communication with at least one end of the dirty liquid outlets at both ends, and the liquid outlet of the liquid discharge pump 52 is in communication with the dirty liquid container 40.

[0169] Specifically, the liquid inlet of the liquid discharge pump 52 is in communication with the first dirty liquid outlet 2241 and / or the second dirty liquid outlet 2242 by means of a pipeline, and the liquid outlet of the liquid discharge pump 52 is in communication with the dirty liquid container 40 by means of a pipeline.

[0170] In this embodiment, the drainage pump 52 is a peristaltic pump or a diaphragm pump. It can be understood that a diaphragm pump uses the reciprocating motion of a diaphragm to change the volume of the cavity within the pump, thereby changing the water pressure within the cavity. It is unidirectional and prevents backflow of dirty fluid. For example, the diaphragm pump includes a motor and an eccentric wheel. The motor drives the eccentric wheel to rotate. One end of a bearing abuts against the edge of the eccentric wheel, and the other end of the bearing abuts against one side of the diaphragm. This causes the eccentric wheel to drive the diaphragm to reciprocate through the bearing, thereby changing the volume and water pressure of the cavity defined by the diaphragm. The diaphragm of the diaphragm pump can be made of materials such as neoprene rubber, fluororubber, or nitrile rubber, thus possessing good corrosion resistance. Compared to traditional plunger pumps, diaphragm pumps have a simpler structure, smaller size, and also improve the portability of portable cleaning equipment.

[0171] like Figure 24 and Figure 25 As shown, in another feasible embodiment, the fluid recovery power source includes an air pump 544 or a blower 542 that enables the dirty fluid 70 to be drawn into the sludge container 40 through a recovery pipeline, and the recovery pipeline is connected to at least one of the two sludge outlets.

[0172] Specifically, the fluid recovery power source is a negative pressure generating device. This device creates a negative pressure environment within the wastewater container 40 by drawing in gas, thereby allowing the dirty fluid 70 to be drawn out of the container. In these embodiments, the negative pressure generating device is located downstream of the wastewater container 40 along the flow direction of the dirty fluid; the dirty fluid 70 does not flow through the negative pressure generating device but enters the wastewater container 40 directly.

[0173] It should be understood that, in the above embodiments, the dirty fluid 70 output from the sewage outlet 224 does not need to pass through the aforementioned air pump 544 or fan 542. Therefore, the main consideration for the air pump 544 or fan 542 is to generate a vacuum negative pressure environment, rather than to have good corrosion resistance. As an optional implementation, the air pump 544 can be a diaphragm pump, a plunger pump, a peristaltic pump, or an electromagnetic pump.

[0174] To prevent contaminated fluid from entering the diaphragm pump and causing it to malfunction, a filter device (not shown) can be added upstream of the diaphragm pump. Specifically, the filter device is installed on the wastewater container 40. This prevents corrosion of the diaphragm pump by fine sand and other impurities after prolonged use.

[0175] It can be understood that due to the multi-angle use change of the cleaning device, the dirty fluid 70 is also easy to enter the negative pressure generating device through the pipeline, causing the negative pressure generating device to stop working or the dirty fluid 70 to overflow, affecting the user experience. For example, in the embodiment, the negative pressure generating device is a fan 542 or an air pump 544, and once a large amount of dirty fluid 70 enters the air pump 544 or the fan 542, it is easy to cause damage to the air pump 544 or the fan 542, or cause the dirty fluid 70 to overflow.

[0176] Therefore, in this embodiment, an air extraction unit similar to the exhaust structure shown in Figure 10 and Figure 11 is provided, which includes an air extraction floating ball 546 and a counterweight 548, the air extraction floating ball 546 is arranged in the dirty liquid container 40, the air extraction floating ball 546 is provided with an air duct opening 547, and the counterweight 548 is arranged opposite to the air duct opening 547. The air pump 544 or the fan 542 is connected with the air extraction floating ball 546 through the negative pressure suction pipeline 549, so as to suck the gas in the dirty liquid container 40 through the air duct opening 547, thereby providing a negative pressure condition for sucking the dirty fluid into the dirty liquid container 40 through the pipeline. The air extraction unit has the same beneficial effects as the exhaust structure shown in Figure 10 and Figure 11 , and will not be described here.

[0177] In the embodiment shown in Figure 25 , the fan 542 includes a wind cavity 540 and a fan located in the wind cavity 540, one end of the negative pressure suction pipeline 549 is in communication with the wind cavity 540, and the other end is in communication with the air extraction floating ball 546. Similar to the previous embodiment, the rotation of the fan can generate a suction force to suck and exhaust the gas in the dirty liquid container 40 to generate a negative pressure environment. The difference between this embodiment and the previous embodiment is that the fluid recovery power source is the fan 542, and the same will not be described here.

[0178] The inventors of the present application have found that in the "multi-dimensional" cleaning process, the posture of the cleaning device is constantly switched, so that the first dirty liquid outlet 2241 is located at one end of the raised position of the dirty liquid containing cavity 222 in the direction of gravity, and the dirty fluid 70 flows to the second dirty liquid outlet 2242 at the other end (below) of the depressed position of the dirty liquid containing cavity 222 under the action of gravity. When the fluid recovery power source is only one liquid discharge pump 52 respectively sucking the two ends of the dirty liquid outlet, the air suction of the dirty liquid outlet located at one end of the raised position of the dirty liquid containing cavity 222 is easier than the dirty fluid suction of the dirty liquid outlet located at the lower depressed position, and a pressure difference cannot be formed, resulting in difficult dirty fluid suction of the dirty liquid outlet located below.

[0179] Therefore, according to one embodiment of the present application, in the embodiment in which the two ends of the dirty liquid containing cavity 222 along the length direction of the cleaning head 20 are respectively provided with a dirty liquid outlet, the portable cleaning device further comprises a blocking mechanism 29, which can close the passage of the dirty liquid outlet at one end of the dirty liquid containing cavity 222 in the raised position along the gravity direction to the fluid recovery power source, and open the passage of the dirty liquid outlet at the other end of the dirty liquid containing cavity 222 in the depressed position along the gravity direction to the fluid recovery power source.

[0180] In the present embodiment, as previously described, the portable cleaning device has a first use posture and a second use posture; wherein, in the first use posture of the portable cleaning device, the two ends of the dirty liquid outlet are staggered in the gravity direction, the dirty liquid outlet in the raised position along the gravity direction is blocked by the blocking mechanism 29, and the dirty liquid outlet in the depressed position along the gravity direction is opened by the blocking mechanism 29. In this way, the problem that the dirty liquid outlet in the depressed position (lower) is difficult to suck dirty fluid due to the inability to form a pressure difference between the two ends of the dirty liquid outlet can be effectively solved.

[0181] In the state in which the portable cleaning device is in the second use posture, the two ends of the dirty liquid outlet in the dirty liquid containing cavity 222 are substantially located on the same horizontal plane, and the two ends of the dirty liquid outlet are both fully opened; specifically, the blocking mechanism 29 corresponds to the dirty liquid outlet of the cleaning head 20. In the state in which the portable cleaning device is in the second use posture, the two ends of the dirty liquid outlet are located on the same horizontal plane, and the two ends of the dirty liquid outlet are both fully opened, i.e. the two blocking mechanisms 29 corresponding to the dirty liquid outlet are both not in action.

[0182] As shown in Figure 26 and Figure 27 , in one feasible embodiment of the blocking mechanism 29, it comprises: a blocking piece 292, which is slidingly connected to the cleaning head 20 along the length direction of the dirty liquid containing cavity 222, for blocking the corresponding dirty liquid outlet; and an actuating part 294, which is movably connected to the cleaning head 20 along the length direction of the dirty liquid containing cavity 222, and is configured to move in response to different postures of the portable cleaning device; wherein, the actuating part 294 is configured to act on the blocking piece 292 during movement, to drive the blocking piece 292 to move in a predetermined direction, so that the blocking piece 292 can at least partially block the corresponding dirty liquid outlet 224.

[0183] Specifically, the blocking mechanism 29 further comprises an elastic member 296; one end of the elastic member 296 is connected to the cleaning head housing 22, and the other end of the elastic member 296 is connected to the blocking member 292, and the elastic member 296 is used to provide an elastic force to make the blocking member 292 have a moving tendency in the direction opposite to the preset direction.

[0184] In the embodiment, the blocking member 292 is slidingly connected to the closed end 221 of the dirty liquid containing cavity 222 along the longitudinal extension direction of the dirty liquid containing cavity 222, and the connecting wall 223 of the dirty liquid containing cavity 222 is provided with a sliding groove, and one end of the blocking member 292 is provided with a connecting portion 293, and the connecting portion 293 extends out of the sliding groove and is connected with the elastic member 296. In this way, on the one hand, the sliding groove and the connecting portion 293 can limit the movement of the blocking member 292, and on the other hand, it is convenient to connect with the elastic member 296.

[0185] The outer side of the dirty liquid containing cavity 222 is provided with a mounting cavity for accommodating the actuating portion 294 and the elastic member 296, and the actuating portion 294 can be a gravity ball, which is rollably arranged in the mounting cavity along the longitudinal extension direction of the dirty liquid containing cavity 222, and the other end of the blocking member 292 is connected with the actuating portion 294 through a pull rope 291. The pull rope 291 can be guided by a positioning column 295, and the elastic member 296 can be a spring, one end of which is connected to the inner wall of the mounting cavity, and the other end of which is connected to the connecting portion 293 of the blocking member 292. When the cleaning device is in the first use posture, the gravity ball located below in the gravity direction (pressed low position) moves downward under the action of gravity, the pull rope 291 is in a relaxed state, and the blocking member 292 moves under the action of the elastic member 296 to at least partially open the dirty liquid outlet. The gravity ball located above in the gravity direction (raised position) moves downward under the action of gravity, the pull rope 291 is in a tensioned state, and the corresponding spring is stretched, and the blocking member 292 at least partially blocks the corresponding dirty liquid outlet.

[0186] When the portable cleaning device is in the second use posture, the blocking member 292 is kept completely misaligned with the dirty liquid outlet under the action of the elastic member 296; when the portable cleaning device is in the first use posture, the actuating portion 294 moves in the direction opposite to the preset direction under the action of gravity, and the pull rope 291 pulls the blocking member 292 to enable the blocking member 292 to move in the preset direction against the elastic force of the elastic member 296, thereby at least partially blocking the dirty liquid outlet.

[0187] In another feasible embodiment of the blocking mechanism, as Figure 28As shown, it includes a three-way pipeline and a blockage 56, as described above, the dirty liquid containing cavity 222 is respectively provided with a first dirty liquid outlet 2241 and a second dirty liquid outlet 2242 at both ends along the length direction of the cleaning head 20; the three-way pipeline has a first backflow branch 232 and a second backflow branch 233 respectively communicating with the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242, and a converging branch 234 communicating with the first backflow branch 232 and the second backflow branch 233, the converging branch 234 is connected with the dirty liquid container 40; the blockage 56 is arranged in the three-way pipeline and is configured to keep static in response to the posture of the portable cleaning device to communicate all branches of the three-way pipeline or alternatively close the first backflow branch 232 and the second backflow branch 233.

[0188] Specifically, the portable cleaning device is in the second use posture, both backflow branches are in communication with the converging branch 234, the portable cleaning device is in the first use posture, the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 at both ends of the dirty liquid containing cavity 222 are staggered with each other in the direction of gravity, the backflow branch corresponding to the dirty liquid outlet above (elevated position) in the direction of gravity is closed by means of the blockage 56, and the backflow branch corresponding to the dirty liquid outlet below (depressed position) in the direction of gravity is opened. The blockage 56 can be selected to keep all backflow branches in communication with the converging branch 234 or alternatively select one backflow branch to be in communication with the converging branch 234 according to the posture of the portable cleaning device.

[0189] Further, the portable cleaning device further includes an angle sensor 80 and a controller 90; the blockage 56 is in communication connection with the controller 90, the controller 90 is configured to determine the posture of the portable cleaning device according to the detection result of the angle sensor 80, and control the blockage 56 to keep static to communicate all branches of the three-way pipeline or alternatively close the first backflow branch 232 and the second backflow branch 233. In this way, the problem that the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 cannot form a pressure difference, resulting in difficulty in sucking dirty fluid of the lower dirty liquid outlet, can also be effectively solved.

[0190] As shown, Figure 29 In another embodiment, the blockage 56 includes two valves, which are respectively installed in the first backflow branch 232 and the second backflow branch 233; wherein the two valves reciprocate between the first backflow branch 232 and the second backflow branch 233 to alternatively close the first backflow branch 232 and the second backflow branch 233.

[0191] Specifically, the dirty liquid container 40 is provided with two dirty liquid inlets, each dirty liquid outlet is communicated with one end of the dirty liquid inlet by a pipeline, and the portable cleaning device further comprises an electromagnetic valve 58 configured to keep opening each dirty liquid inlet or selectively closing one dirty liquid inlet in response to the posture of the portable cleaning device.

[0192] In the embodiment, the portable cleaning device is in the second use posture, the electromagnetic valve 58 is not actuated, and each dirty liquid inlet is opened; the portable cleaning device is in the first use posture, the dirty liquid inlet corresponding to the dirty liquid outlet located above in the gravity direction (at one end of the lifting position of the dirty liquid containing cavity 222) is closed by the electromagnetic valve 58, and the dirty liquid inlet corresponding to the dirty liquid outlet located below in the gravity direction (at one end of the pressing position of the dirty liquid containing cavity 222) is opened. Further, the portable cleaning device further comprises an angle sensor 80, the angle sensor 80 is in communication connection with the electromagnetic valve 58, and the electromagnetic valve 58 is configured to determine the posture of the portable cleaning device according to the detection result of the angle sensor 80 and control keeping opening each dirty liquid inlet or selectively closing one dirty liquid inlet.

[0193] In this way, different dirty liquid inlets are adaptively opened or closed when the portable cleaning device is in different postures, which is beneficial to ensure the negative pressure environment in the dirty liquid container 40, thereby improving the dirty fluid suction efficiency.

[0194] In another possible embodiment of the plugging mechanism 29, the plugging mechanism 29 comprises a three-way valve 27, the three-way valve 27 comprises two inlet pipe ports 272 connected with the first return branch 232 and the second return branch 233 respectively and one outlet pipe port 273 connected with the converging branch 234, the three-way valve has an inner cavity 2711, and the two inlet pipe ports 272 and the outlet pipe port 273 are respectively communicated with the inner cavity 2711; the inner cavity 2711 is provided with two movable members 274 respectively used for plugging the passages between the two inlet pipe ports 272 and the first return branch 232 and the second return branch 233, and at least one driving unit 275 is arranged between the two movable members 274; wherein under the action of gravity, the driving unit 275 can drive the movable member 274 to plug the corresponding inlet pipe port 272.

[0195] Specifically, the three-way valve 27 has a valve body 271, the two inlet pipe ports 272 of the valve body 271 are communicated with the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 respectively, the valve body 271 has an inner cavity 2711, and the two inlet pipe ports 272 and the outlet pipe port 273 are respectively communicated with the inner cavity 2711.

[0196] In an embodiment, as Figure 38As shown, the movable member 274 is one, under the action of gravity, one movable member 274 moves in the inner cavity of the valve body 271 to block one inlet port 272 and open another inlet port 272.

[0197] Alternatively, in another embodiment, the movable member 274 can be two, respectively used to block two inlet ports 272; at least one driving unit 275 is arranged between the two movable members 274; wherein under the action of gravity, the driving unit 275 can drive the two movable members 274 to block the corresponding inlet port 272.

[0198] Specifically, in a feasible embodiment, the blocking mechanism 29 includes at least one driving unit, and at least one driving unit is arranged between the two movable members. As shown in Figure 30 to Figure 33 Specifically, the driving unit 275 is two, located between the two movable members 274; in the state that one movable member 274 blocks the corresponding inlet port 272, the other movable member 274 is separated from the corresponding other inlet port 272, and the outlet port 273 is communicated with the other inlet port 272.

[0199] In this embodiment, the movable member 274 can be a stainless steel ball, and the driving unit 275 can also be a stainless steel ball, and the outer diameter of the driving unit 275 is greater than the outer diameter of the movable member 274, so as to facilitate the movement of the movable member 274.

[0200] When the cleaning device is working at the depressed position at the right end of the cleaning head and the raised position at the left end, the internal state of the three-way valve 27 is as shown in Figure 31 As shown, when the fluid recovery mechanism is opened, the four stainless steel balls in the three-way valve 27 will slide down along the slope, and the pressure on the inlet port 272 is F=2×(M1+M2)g×sinθ, wherein 90°≥θ≥0°, M1 is the mass of the movable member 274, and M2 is the mass of the driving unit 275, both in grams. At this time, the bottom right ball forms a seal on the inlet port 272, the water in the sewage containing cavity 222 enters from the other inlet port 272 and flows out from the outlet port 273, and enters the sewage container 40.

[0201] When the cleaning head of the cleaning device is in the vertical state for car washing, the internal state of the three-way valve 27 is as shown in Figure 32 As shown, when the fluid recovery mechanism is opened, the four stainless steel balls in the three-way valve 27 will slide down along the slope, and the bottom right ball forms a seal on the inlet port 272, and the pressure on the inlet port 272 is F=2×(M1+M2)g. At this time, the sewage in the sewage containing cavity 222 enters from the other inlet port 272 and flows out from the outlet port 273, and enters the sewage container 40.

[0202] When the cleaning device is in a horizontal state for washing a car, the internal steel ball of the three-way valve 27 is in a state as shown in Figure 33 When the fluid recovery mechanism is opened, the four stainless steel balls inside the three-way valve 27 cannot form a seal with the two inlet port 272 and the outlet port 273, at which time the dirty fluid 70 in the dirty liquid containing cavity 222 enters from the two inlet ports 272 and flows out from the outlet port 273 into the dirty liquid container 40.

[0203] In another possible implementation, as shown in Figure 34 The valve body 271 is connected with a swing rod 276, the swing rod 276 is connected with the driving unit 275; under the swing action of the swing rod 276, the swing rod 276 can drive the driving unit 275 to move towards one of the movable pieces 274 to block the corresponding inlet port 272, and the other movable piece 274 moves away from the inlet port 272.

[0204] This embodiment uses the pendulum 277 connected outside the swing rod 276 to drive the swing rod 276 to swing left and right under the action of gravity, and then drive the driving unit 275 connected to the lower part thereof to move in the opposite direction to push the movable piece 274 to move towards the arc surface of the inlet port 272. Based on the tangential sealing principle of the arc conical surface, as the angle is switched during cleaning, the movable piece 274 in the valve body 271 seals different inlet ports 272, realizing the switching of extracting dirty water from two places, which is fast, low in failure rate, low in cost, simple in material, and high in working efficiency.

[0205] The three-way valve 27 of this embodiment realizes the opening and closing of the three-way valve 27 by the free swing of the swing rod 276 in the valve body 271. The steps are as follows: due to the extrusion of the steel ball below the swing rod 276, one of the small steel balls on the two sides forms a sealing valve with the inner wall of the conical pipe, realizing the opening and closing switching of the inlet port 272. At this time, the small steel ball below the swing rod blocks the pipe opening, and the other two channel openings are connected, the liquid flows through the two channel openings, realizing the delivery of the liquid.

[0206] Further, the inner cavity wall surface of the valve body 271 is formed with a tapering portion 2712 for the movable piece 274 to move towards the corresponding inlet port 272. The tapering portion 2712 is arranged to facilitate the displacement of the movable piece 274 towards the corresponding inlet port 272.

[0207] As described above, the dirty liquid containing cavity 222 is provided with a first dirty liquid outlet 2241 and a second dirty liquid outlet 2242 at two ends along the length direction of the cleaning head 20. As shown in Figure 35As shown, the portable cleaning device of still another embodiment of the present application is provided, the fluid recovery power source includes two liquid discharge pumps 52; the liquid inlets of the two liquid discharge pumps 52 are respectively communicated with the two dirty liquid outlets 224 at the two ends, and the liquid outlets of the two liquid discharge pumps 52 are respectively communicated with the dirty liquid container 40.

[0208] Specifically, the liquid inlets of the liquid discharge pumps 52 are respectively directly communicated with the dirty liquid outlets at the two ends through a pipeline, that is, the two liquid discharge pumps 52 are respectively directly communicated with the first dirty liquid outlet 2241 and the second dirty liquid outlet 2242 through two pipelines. In this embodiment, the problem that the air suction of the upper dirty liquid outlet is more difficult than the dirty fluid suction of the lower dirty liquid outlet does not exist. Figure 23 The liquid discharge pumps 52 used in the above embodiments are of the same type, and the liquid discharge pumps 52 in this embodiment are peristaltic pumps or diaphragm pumps.

[0209] In a modified embodiment, as shown, Figure 36 the dirty liquid containing cavity 222 is respectively provided with a first dirty liquid outlet 2241 and a second dirty liquid outlet 2242 at the two ends along the axial direction of the cleaning head 20, the dirty liquid container 40 includes a first chamber 42 and a second chamber 44 which are independent of each other and not communicated with each other, the two dirty liquid outlets 224 are respectively communicated with the first chamber 42 and the second chamber 44 through a first fluid recovery pipeline and a second fluid recovery pipeline; the fluid recovery power source includes two air pumps 544 or fans, and the air inlets of the two air pumps 544 or the fans are respectively communicated with the first chamber 42 and the second chamber 44 through a negative pressure suction pipeline.

[0210] In this embodiment, although there is no problem that the air suction of the upper dirty liquid outlet is more difficult than the dirty fluid suction of the lower dirty liquid outlet, the inventors of the present application have found that if the dirty liquid outlet located at the upper part continuously sucks air, the negative pressure environment in the dirty liquid container 40 will be affected, and the dirty fluid suction efficiency of the dirty liquid outlet located at the lower part cannot be further improved.

[0211] Specifically, the fluid recovery power source includes two air extraction floating balls and two counterweights. Specifically, the two air extraction floating balls are a first air extraction floating ball 5462 and a second air extraction floating ball 5464, and the two counterweights are a first counterweight 5482 and a second counterweight 5484. The first air extraction floating ball 5462 is arranged in the first chamber 42, and the second air extraction floating ball 5464 is arranged in the second chamber 44. The first counterweight 5482 is opposite to the air duct opening 547 of the first air extraction floating ball 5462, and the second counterweight 5484 is opposite to the air duct opening 547 of the second air extraction floating ball 5464. Each air pump 544 has an air inlet end and an air outlet end in communication with the outside. The air inlet end of one air pump 544 is in communication with the first air extraction floating ball 5462, and the air inlet end of the other air pump 544 is in communication with the second air extraction floating ball 5464. In this way, the dirty fluid extraction of the chambers corresponding to the two dirty liquid outlets 224 does not affect each other, and the air extraction of one dirty liquid outlet does not affect the negative pressure environment.

[0212] As shown in FIG. 1, the dirty liquid containing chamber 222 has an open end for receiving the dirty fluid 70 and a closed end 221 opposite to the open end 220. The closed end 221 has a first flow guide surface 126 and a second flow guide surface 127. The distance between the side of the first flow guide surface 126 and the second flow guide surface 127 connected to each other and the open end 220 is less than the distance between the side of the first flow guide surface 126 and the second flow guide surface 127 away from each other and the open end 220. Figure 37 To further promote the flow of dirty fluid to the dirty liquid outlets and be discharged, in some embodiments, the closed end 221 of the dirty liquid containing chamber 222 has a first flow guide surface 126 and a second flow guide surface 127 connected to each other on one side facing each other. The side of the first flow guide surface 126 and the second flow guide surface 127 connected to each other is closer to the open end 220 than the side of the first flow guide surface 126 and the second flow guide surface 127 away from each other. That is, the closed end 221 of the dirty liquid containing chamber 222 is "high in the middle" and "low on both sides". The two dirty liquid outlets 224 are used to output the dirty fluid guided by the first flow guide surface 126 and the second flow guide surface 127, respectively.

[0213] Specifically, the two dirty liquid outlets 224 are arranged at the first flow guide surface 126 and the second flow guide surface 127, respectively, and are located at positions close to the side of the first flow guide surface 126 and the second flow guide surface 127 away from each other. Alternatively, the two dirty liquid outlets 224 are arranged on the same side of the connecting wall 223 and are located at positions close to the side of the first flow guide surface 126 and the second flow guide surface 127 away from each other. In this way, during the "multi-dimensional" cleaning process, the cleaning device switches between different postures, and the two dirty liquid outlets 224 are located downstream of the first flow guide surface 126 and the second flow guide surface 127, which is beneficial to the fluid recovery of the dirty fluid when the portable cleaning device is in different postures.

[0214]

[0215] ​Further, the gas in the dirty liquid container 40 can communicate with the dirty liquid containing cavity 222 through a negative pressure exhaust pipeline, and the connection of the dirty liquid containing cavity 222 is located at the junction of the first flow guide surface 126 and the second flow guide surface 127.

[0216] Specifically, the aforementioned exhaust pipeline 66 is connected to the dirty liquid containing cavity 222 at the end away from the float 62, and the connection of the dirty liquid containing cavity 222 is located at the junction of the first flow guide surface 126 and the second flow guide surface 127. Specifically, the connection of the exhaust pipeline 66 and the dirty liquid containing cavity 222 is located at the middle position of the closed end 221 of the dirty liquid containing cavity 222. In this way, on the one hand, the dirty fluid 70 entering the dirty liquid containing cavity 222 is affected by gravity and the flow guide of the two flow guide surfaces and flows towards the dirty liquid outlet 224, and is not easy to enter the exhaust pipeline 66. On the other hand, a small amount of dirty fluid is mixed in the exhaust gas of the exhaust pipeline 66, and the small amount of dirty fluid can be output to the dirty liquid containing cavity 222 again through the exhaust pipeline 66 to improve the recovery efficiency of the dirty fluid, and the dirty fluid will not leak. On the other hand, during the exhaust process of the exhaust pipeline 66, the airflow will disturb the dirty fluid entering the dirty liquid containing cavity 222 to both sides, which further improves the recovery efficiency of the dirty fluid, and achieves three purposes at one time.

[0217] The portable cleaning device provided in the present application can clean at multiple angles. Specifically, in the first working position where the height of the holding part 12 from the ground is greater than the height of the cleaning head 20 from the ground, and in the second working position where the height of the holding part 12 from the ground is less than the height of the cleaning head 20 from the ground, and when the dirty liquid container 40 is not full, the dirty fluid 70 can be kept in the dirty liquid container 40. And the motors electrically connected with the fluid recovery power source can be in electrical communication state.

[0218] Further, in the first working position or the second working position of the portable cleaning device, the volume of the dirty fluid in the dirty liquid container 40 is greater than or equal to 1 / 4 of the volume of the dirty liquid container 40, and less than the volume of the dirty liquid container 40. The dirty fluid 70 contained in the dirty liquid container 40 can be kept in the dirty liquid container 40. In the present embodiment, the volume of the dirty liquid container 40 is less than or equal to 700ml, and preferably, the volume of the dirty liquid container 40 is less than or equal to 500ml.

[0219] The dirty liquid container 40 is not full, which means that the volume of the dirty fluid 70 in the dirty liquid container 40 is less than the volume of the dirty liquid container 40.

[0220] The portable cleaning device of the present application can ensure that the dirty fluid 70 on the cleaning head 20 quickly flows into the dirty liquid container 40 during use, and always keeps the dirty fluid 70 from leaking out when the dirty liquid container 40 is not full, so that the cleaning device can work normally and effectively improve the use experience of the portable cleaning device of the present application.

[0221] In the present embodiment, the portable cleaning device comprises a battery pack 50 for providing power for the fluid recovery mechanism and the liquid supply mechanism. The battery pack 50 can be a direct current power supply, specifically a rechargeable battery pack. The battery pack is detachably mounted on the holding rod 10.

[0222] Specifically, the holding rod 10 is provided with one or more battery pack mounting portions for combining the battery pack. The battery pack mounting portions can be arranged close to the gripping portion 12, and the number of battery packs matches the number of battery pack mounting portions. It should be understood that the battery pack mounting portions should be arranged close to the gripping portion 12 to achieve that the weight unit is as close as possible to the gripping portion 12, thereby reducing the fatigue of the user during work.

[0223] Further, the aforementioned battery pack can at least provide power for two different types of direct current tools, for example, it can be used for electric tools with blowing function, lawn mower, grass trimmer, chain saw, pruning machine, angle grinder, electric hammer, electric drill, etc. In this way, the user can only purchase the bare machine of the electric tool with blowing function, and use the battery pack of the existing other electric tools to provide power for the electric tool with blowing function, realizing energy sharing of multiple tools. On the one hand, it is beneficial to the universality of the battery pack platform; on the other hand, it also saves the purchase cost for the user.

[0224] In the present embodiment, the battery pack can be fixed to the battery pack mounting portion in a buckle manner or a plug-in manner. For example, the battery pack comprises slide rail portions (not numbered) arranged on both sides thereof, a buckle portion arranged on the upper side thereof, and a plurality of electrode connecting pieces (not shown). The slide rail portions can be matched with the battery pack mounting portion to limit the battery pack in the radial direction, the buckle portion is buckled with the housing to limit the battery pack in the axial direction, so as to stably connect the battery pack to the battery pack mounting portion.

[0225] In other embodiments, the battery pack can also be a direct insertion type battery, or other batteries that can normally work with the portable cleaning device, which are not limited here. Of course, the portable cleaning device can also be equipped with a connector connected with a vehicle power supply or other power supply equipment. When not in use, the connector can be accommodated in the holding rod housing, and when in use, the connector can be taken out from the holding rod housing.

[0226] The above-described specific embodiments have further detailed the purposes, technical solutions and beneficial effects of the present application, and it should be understood that the above-described is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A portable cleaning apparatus, characterized by The portable cleaning device comprises: a cleaning head; a fluid recovery mechanism having a dirty liquid container, a fluid recovery power source, and a motor driving the fluid recovery power source to perform suction work, the cleaning head being configured to clean a surface to be cleaned to generate dirty fluid that can be sucked into the dirty liquid container by the fluid recovery power source; a holding portion for a user to hold and operate the portable cleaning device to perform cleaning work; the portable cleaning device has at least a first working position in which the height of the holding portion from the ground is greater than the height of the cleaning head from the ground, and a second working position in which the height of the holding portion from the ground is less than the height of the cleaning head from the ground; the dirty liquid container is provided with an exhaust structure, the exhaust structure comprising an exhaust port for adjusting the pressure in the inner cavity of the dirty liquid container, and the exhaust port is configured to be exposed above the liquid level of the dirty fluid in the dirty liquid container when the portable cleaning device is in the first working position or the second working position.

2. The portable cleaning apparatus of claim 1, wherein, The exhaust port is located in the dirty liquid container, and the exhaust structure further comprises: a float located in the dirty liquid container, and the exhaust port is arranged on the float; an exhaust pipeline connected to the float, one end of the exhaust pipeline being in communication with the outside of the dirty liquid container, and the other end of the exhaust pipeline extending into the dirty liquid container and being in communication with the exhaust port, and the gas in the dirty liquid container can be discharged to the outside of the dirty liquid container through the exhaust port and the exhaust pipeline.

3. The portable cleaning apparatus of claim 2, wherein, A counterweight is arranged on the float, and the counterweight is arranged opposite to the exhaust port, and the buoyancy of the float is greater than or equal to the gravity of the counterweight.

4. The portable cleaning apparatus of claim 2 or 3, wherein, The exhaust pipeline is configured to adjust the position angle of the exhaust pipeline with the float based on the change of the capacity of the dirty water collected in the dirty liquid container, and the Shore hardness of the exhaust pipeline is 30A-40A.

5. The portable cleaning apparatus of claim 1, wherein, The exhaust port is arranged on the dirty liquid container, and the dirty liquid container provided with the exhaust port is rotatably connected to the portable cleaning device to adjust the position of the exhaust port in response to the change of the portable cleaning device between the first working position and the second working position.

6. The portable cleaning apparatus of claim 1 or 2, wherein, The portable cleaning device further comprises a liquid supply mechanism, and the liquid supply mechanism comprises: a fluid container capable of containing cleaning fluid; a gravity unit arranged in the fluid container, and the gravity unit is provided with a liquid suction hole; a liquid supply pump for providing power to load cleaning fluid to the cleaning head; a liquid supply pipeline in communication with the liquid suction hole, and the liquid supply pump and the liquid supply pipeline deliver liquid to the cleaning head; wherein the buoyancy of the gravity unit is less than the gravity of the gravity unit.

7. The portable cleaning apparatus of claim 1, wherein, The cleaning head comprises a cleaning head shell, a cleaning brush rotatably connected to the cleaning head shell about an axis, and a stain removal unit arranged in the cleaning head shell and configured to act on the cleaning brush. The portable cleaning device further comprises a dirty liquid containing cavity arranged upstream of the dirty liquid container and configured to collect dirty fluid removed from the cleaning brush by the stain removal unit as a first collection area.

8. The portable cleaning apparatus of claim 7, wherein, The dirty liquid containing cavity is provided with a dirty liquid outlet at each end thereof along the length direction of the dirty liquid containing cavity, the dirty liquid outlet being configured to communicate with the fluid recovery power source.

9. The portable cleaning apparatus of claim 8, wherein, The portable cleaning apparatus further comprises a second use posture in which the dirty liquid outlets at the two ends of the dirty liquid containing cavity are substantially at the same level, and the portable cleaning apparatus has at least the dirty liquid outlet at one end of the dirty liquid containing cavity configured to allow the dirty liquid generated by the cleaning brush to flow therethrough in both the first use posture and the second use posture.

10. The portable cleaning apparatus of claim 9, wherein, In the second use posture, the dirty liquid outlets at the two ends of the dirty liquid containing cavity are both fully open to the passage of the fluid recovery power source.

11. The portable cleaning apparatus of claim 8, wherein, The fluid recovery power source comprises a liquid discharge pump configured to allow the dirty liquid to flow therethrough and be sucked into the dirty liquid container, the liquid discharge pump being one, the liquid inlet of the liquid discharge pump being configured to communicate with at least one of the dirty liquid outlets at the two ends, and the liquid outlet of the liquid discharge pump being configured to communicate with the dirty liquid container; or The fluid recovery power source comprises an air pump or a fan configured to allow the dirty liquid to be sucked into the dirty liquid container through a recovery pipeline, the recovery pipeline being configured to communicate with at least one of the dirty liquid outlets at the two ends.

12. The portable cleaning apparatus of any one of claims 8 to 11, wherein, The portable cleaning apparatus further comprises a blocking mechanism configured to close the passage between the dirty liquid outlet at one end of the dirty liquid containing cavity at the elevated position and the fluid recovery power source, and open the passage between the dirty liquid outlet at the other end of the dirty liquid containing cavity away from the elevated position and the fluid recovery power source.

13. The portable cleaning apparatus of claim 12, wherein, The blocking mechanism comprises: a blocking member slidingly connected to the cleaning head along the length direction of the dirty liquid containing cavity, and configured to block the corresponding dirty liquid outlet; and an actuating portion movably connected to the cleaning head along the length direction of the dirty liquid containing cavity, and configured to move in response to different use postures of the portable cleaning apparatus; wherein the actuating portion is configured to act on the blocking member during movement to drive the blocking member to move in a predetermined direction, so that the blocking member can at least partially block the corresponding dirty liquid outlet.

14. The portable cleaning apparatus of claim 12, wherein, The recovery pipeline is configured as a three-way pipeline, the three-way pipeline comprising a first return branch, a second return branch, and a converging branch communicating with the first return branch and the second return branch, the first return branch and the second return branch respectively communicating with the dirty liquid outlets at the two ends of the dirty liquid containing cavity, the converging branch communicating with the dirty liquid container, and the blocking mechanism being capable of blocking the passage between one of the first return branch and the second return branch and the fluid recovery power source.

15. The portable cleaning apparatus of claim 14, wherein, The blocking mechanism comprises a three-way valve, the three-way valve comprises two inlet ports connected with the first return branch and the second return branch respectively, and one outlet port connected with the converging branch, the three-way valve has an inner cavity, and the two inlet ports and the outlet port are respectively communicated with the inner cavity; the inner cavity is provided with: Two movable members for blocking the passages between the two inlet ports and the first return branch and the second return branch respectively; At least one driving unit is arranged between the two movable members; Wherein, under the action of gravity, the driving unit can drive the movable member to block the corresponding inlet port.

16. The portable cleaning apparatus of claim 8, wherein, The fluid recovery power source comprises two liquid discharge pumps; the liquid inlets of the two liquid discharge pumps can be communicated with the dirty liquid outlets at both ends of the dirty liquid containing cavity, and the liquid outlets of the two liquid discharge pumps are respectively communicated with the dirty liquid container.

17. The portable cleaning apparatus of claim 6, wherein, The portable cleaning device further comprises a longitudinally extending holding rod, the cleaning head is arranged at one end of the holding rod, the dirty liquid container and the fluid container are arranged at intervals along the longitudinal extension direction of the holding rod, and the dirty liquid container is arranged closer to the cleaning head.

18. A portable cleaning apparatus, characterized by Comprise: A cleaning head; A fluid recovery mechanism having a dirty liquid container and a fluid recovery power source and a motor driving the fluid recovery power source to perform suction movement, the dirty fluid on the cleaning head can be sucked into the dirty liquid container by the fluid recovery power source; A holding part for the user to operate and hold the portable cleaning device for cleaning work; The portable cleaning device at least comprises a first working position in which the distance between the holding part and the ground is greater than the distance between the cleaning head and the ground, and a second working position in which the distance between the holding part and the ground is less than the distance between the cleaning head and the ground; Wherein, in the first working position or the second working position of the portable cleaning device, and in the state that the dirty liquid container is not full, the dirty fluid can be kept in the dirty liquid container.

19. The portable cleaning apparatus of claim 18, wherein, The volume of the dirty fluid in the dirty liquid container is greater than or equal to 1 / 4 of the volume of the dirty liquid container, and less than the volume of the dirty liquid container, and the dirty fluid contained in the dirty liquid container can be kept in the dirty liquid container.

20. The portable cleaning apparatus of claim 18, wherein, The motor electrically connected with the fluid recovery power source can be in an electrically connected state.

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