High-pressure cleaning machine

Abstract

The invention discloses cleaning equipment, and particularly relates to a high-pressure cleaning machine. The high-pressure cleaning machine comprises: a housing in which a battery compartment and a driving compartment are formed; the battery pack is accommodated in the battery compartment; the control panel is arranged in the machine shell; the driving assembly is arranged in the driving bin and comprises a pump and a motor for driving the pump; the water gun is connected with the pump through a water pipe; an air inlet and an air outlet are formed in the machine shell, a heat dissipation air path is formed between the air inlet and the air outlet, the heat dissipation air path is located in the machine shell, and the battery bin and the control panel are sequentially located on the heat dissipation air path in the direction from the air inlet to the air outlet. The heat dissipation air path not only can dissipate heat of the battery pack, but also can dissipate heat of the control panel, that is, the control panel not only can dissipate heat through the heat dissipation fan, but also can dissipate heat through the heat dissipation air path at the same time, and the heat dissipation effect is good.

Description

Technical Field

[0001] The present application relates to a cleaning device, and in particular to a high-pressure cleaning machine. Background Art

[0002] A high-pressure cleaning machine is a machine that uses a power device to make a high-pressure plunger pump generate high-pressure water to wash the surface of an object. It can peel off and wash away dirt to achieve the purpose of cleaning the surface of the object. In some related technologies, the control panel only dissipates heat through its own cooling fan, and the heat dissipation effect is poor.

[0003] This section provides background information related to the present application which is not necessarily prior art. Summary of the invention

[0004] One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a high-pressure cleaning machine with good heat dissipation effect.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] High pressure cleaning machine, including:

[0007] The housing is formed with a battery compartment and a drive compartment;

[0008] A battery pack, housed in the battery compartment;

[0009] A control panel is disposed in the casing;

[0010] A driving assembly, disposed in the driving compartment, comprising a pump and a motor driving the pump;

[0011] A water gun connected to the pump via a water pipe;

[0012] The casing is provided with an air inlet and an air outlet, and a heat dissipation air path is formed between the air inlet and the air outlet. The heat dissipation air path is located inside the casing. From the air inlet to the air outlet, the battery compartment and the control panel are sequentially located on the heat dissipation air path.

[0013] In some embodiments, a power management board is also included, which is disposed in the casing and is used to manage the usage status of the battery pack; from the air inlet to the air outlet, the battery compartment, the power management board and the control board are sequentially located on the heat dissipation air path.

[0014] In some embodiments, the number of the battery packs is two, and the two battery packs are respectively located on two sides of the power management board.

[0015] In some embodiments, a cooling fan is provided on the control board; from the air inlet to the air outlet, the battery compartment, the cooling fan and the control board are sequentially located on the cooling air path.

[0016] In some embodiments, a top cover is provided on the top of the housing, and the top cover is used to open or close the battery compartment, and the battery pack is inserted into the battery compartment in a vertical state.

[0017] In some embodiments, a partition is provided in the middle of the battery compartment, and the partition divides the battery compartment into two sub-battery compartments; the number of the battery packs is two, and the two battery packs are respectively located in the two sub-battery compartments, and the interfaces of the two battery packs are relatively facing the partition.

[0018] In some embodiments, the number of the battery packs is two, and the two battery packs are arranged in parallel.

[0019] In some embodiments, the battery pack is located above the motor and the pump, and the control board is located in front of the battery pack.

[0020] In some embodiments, the air inlet opens toward a lower side of the high pressure cleaning machine.

[0021] In some embodiments, the air outlet is opened on the left side and / or the right side of the casing.

[0022] High pressure cleaning machine, including:

[0023] The housing is formed with a battery compartment and a drive compartment;

[0024] A battery pack, housed in the battery compartment;

[0025] A control panel is disposed in the casing;

[0026] A driving assembly, disposed in the driving compartment, comprising a pump and a motor driving the pump;

[0027] A water gun connected to the pump via a water pipe;

[0028] The battery pack is located above the motor and the pump, and the control board is located in front of the battery pack.

[0029] The benefits of this application are:

[0030] The present application provides a high-pressure cleaning machine, whose heat dissipation air path can not only dissipate heat for the battery pack, but also dissipate heat for the control board, that is, the control board not only has its own heat dissipation fan for heat dissipation, but also has a heat dissipation air path for heat dissipation at the same time, and the heat dissipation effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the high-pressure cleaning machine provided by the present application;

[0032] Figure 2 It is a schematic diagram of the structure of the high-pressure cleaning machine provided by the present application after the front shell and the rear shell are disassembled;

[0033] Figure 3 This is a schematic diagram of the structure of the high-pressure cleaning machine provided by the present application with the top cover and the battery pack hidden;

[0034] Figure 4 This is a front view of the high-pressure cleaning machine provided by the present application with the front cover hidden;

[0035] Figure 5 This is a schematic structural diagram of the high-pressure cleaning machine provided by the present application from a first-view perspective after the front cover and the driving assembly are hidden;

[0036] Figure 6 is a schematic structural diagram of the high-pressure cleaning machine provided by the present application from a second perspective after the front cover and the driving assembly are hidden;

[0037] Figure 7 is a partial schematic diagram of the air inlet of the high-pressure cleaning machine provided by the present application;

[0038] Figure 8 is a schematic structural diagram of the high-pressure cleaning machine provided by the present application when the pull rod is retracted;

[0039] Fig. 9 is a schematic diagram of the structure of the high-pressure cleaning machine provided by the present application when the pull rod is extended;

[0040] Fig.10 is a front view of the high pressure cleaning machine provided by the present application;

[0041] Fig.11 It is a right side view of the high pressure cleaning machine provided by the present application with the hose reel hidden;

[0042] Fig.12 is a side view of the high pressure cleaning machine provided by the present application including a hose reel;

[0043] Fig.13 is a left side view of the high pressure cleaning machine provided by the present application;

[0044] Fig.14 is a schematic diagram of the exploded structure of the unassembled water gun, the upper buttstock and the lower buttstock involved in the present application;

[0045] Fig.15 is a schematic diagram of the exploded structure of the unassembled water gun and upper stock involved in the present application;

[0046] Fig.16is a schematic diagram of the exploded structure of the assembled water gun and upper buttstock involved in the present application;

[0047] Fig.17 is a schematic diagram of the structure of the upper buttstock involved in this application;

[0048] Fig.18 is a schematic diagram of the structure of the lower buttstock involved in this application;

[0049] Fig.19 It is a schematic diagram of the exploded structure of the upper buttstock, the lower buttstock and the casing of the high-pressure cleaning machine provided by the present application;

[0050] Fig. 20 It is a schematic diagram of the structure of the water gun involved in this application;

[0051] Fig.21 It is a structural schematic diagram of the gun handle involved in this application;

[0052] Fig. 22 is a schematic diagram of the structure of a water gun involved in some embodiments of the present application when it is shortened;

[0053] Fig.23 This is a schematic diagram of the structure of the water gun when it is extended in some embodiments of the present application. Figure 1 ;

[0054] Fig.24 This is a schematic diagram of the structure of the water gun when it is extended in some embodiments of the present application. Figure 2 ;

[0055] Fig.25 is a schematic diagram of the exploded structure of the locking mechanism involved in some embodiments of the present application;

[0056] Fig.26 is a structural schematic diagram of a locking mechanism involved in some embodiments of the present application in a locked state;

[0057] Fig. 27 is a schematic structural diagram of a locking mechanism involved in some embodiments of the present application in an unlocked state;

[0058] Fig.28 is a schematic diagram of the structure of a water gun in other embodiments of the present application when it is shortened;

[0059] Fig.29 is a schematic diagram of the structure of the water gun involved in other embodiments of the present application when extended;

[0060] Fig.30 is a structural schematic diagram of a locking mechanism involved in other embodiments of the present application in a locked state;

[0061] Fig.31is a structural schematic diagram of a locking mechanism involved in other embodiments of the present application in an unlocked state;

[0062] Fig.32 is a schematic diagram of a driving circuit in one embodiment;

[0063] Fig.33 is a flow chart of a control method for a high-pressure cleaning machine provided in some embodiments of the present application;

[0064] Fig.34 It is a flow chart of the control method of the high-pressure cleaner provided in other embodiments of the present application.

[0065] 10. Casing; 11. Front shell; 12. Rear shell; 13. Top cover; 14. Battery compartment; 141. Spacer; 1411. Battery pack unlocking key; 15. Drive compartment; 16. Air inlet; 17. Air outlet; 110. Rod mounting portion; 111. Nozzle storage seat; 112. Storage hole; 113. Upper mounting portion; 114. Lower mounting portion; 115. On / off key; 116. First speed adjustment key; 117. First display portion;

[0066] 21. Battery pack; 22. Electrode; 23. Power management board;

[0067] 31. Control panel; 32. Cooling fan;

[0068] 40. driving assembly; 41. motor; 42. pump; 421. water inlet joint; 422. water outlet joint; 43. transmission assembly;

[0069] 50. Pull rod; 51. Pull rod unlocking key; 60. Travel wheel;

[0070] 70. water pipe storage space; 71. hose reel; 72. water pipe; 73. water pipe guide;

[0071] 80, water gun; 81, gun handle; 811, second speed adjustment key; 812, second display unit; 813, trigger; 82, gun rod; 821, gun barrel; 8211, receiving groove; 8212, locking groove; 8213, external thread; 822, outer tube; 823, inner tube; 83, locking mechanism; 831, trigger; 8311, driving protrusion; 8312, locking protrusion; 832, elastic block; 833, rigid seat; 834, rotating shaft; 835, rotating sleeve; 8351, first conical surface; 8352, internal thread; 836, elastic arm;

[0072] 91, upper buttstock; 911, first mounting slot; 912, second mounting slot; 92, lower buttstock; 921, water leakage hole;

[0073] 100. Nozzle;

[0074] 200, control module; 300, drive circuit; 400, power module; 500, detection module. DETAILED DESCRIPTION

[0075] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0076] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0077] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0078] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0079] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0080] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0081] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0082] In this application, the terms "controller", "processor", "central processing unit", "CPU", and "MCU" are interchangeable. When a unit "controller", "processor", "central processing unit", "CPU", or "MCU" is used to perform a specific function, unless otherwise specified, these functions can be performed by a single unit or multiple units.

[0083] In the present application, the terms “device”, “module” or “unit” may be implemented in the form of hardware or software to achieve specific functions.

[0084] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0085] like Figures 1 to 31 As shown, an embodiment of the present application provides a high-pressure cleaning machine, including a housing 10, a battery pack 21, a drive assembly 40, a control board 31, a power management board 23, a water gun 80, a locking mechanism 83, an upper stock 91 and a lower stock 92.

[0086] Reference Figures 1 to 4 The housing 10 is formed by splicing a front housing 11 and a rear housing 12. A battery compartment 14 and a drive compartment 15 are formed in the housing 10. The battery pack 21 is accommodated in the battery compartment 14, and the drive assembly 40 is accommodated in the drive compartment 15. The drive assembly 40 includes a motor 41 and a pump 42. The battery pack 21 is used to power the motor 41. The motor 41 drives the pump 42 through the transmission assembly 43. The pump 42 is connected to the water gun 80 through the water pipe 72. The motor 41 drives the pump 42 to generate high-pressure water, and the high-pressure water is sprayed by the water gun 80 to clean the surface of the object.

[0087] The number of battery packs 21 is two, and the two battery packs 21 are arranged in parallel. By connecting two battery packs 21 in parallel, the battery life is extended. The output voltage of a single battery pack 21 is greater than or equal to 36V. In one embodiment, the output voltage of the battery pack 21 may be 40V or 56V. Two battery packs 21 form a battery pack group, and the maximum output power of the battery pack group is greater than or equal to 1500W. In some embodiments, the maximum output power of the battery pack group is greater than or equal to 1800W. In some embodiments, the maximum output power of the battery pack group may be 1700W, 1800W, 2000W, 2100W, 2200W or 2300W. The maximum water pressure that the water gun 80 can reach is greater than or equal to 2500PSI. In some embodiments, the maximum water pressure of the water gun 80 may be 2500PSI, 2700PSI, 3000PSI, 3100PSI, 3200PSI or 3300PSI.

[0088] In a specific embodiment, the high-pressure cleaner uses two 56V battery packs 21 in parallel. When the flow rate of the water gun 80 is 1.2 GPM, the maximum water pressure of the water gun 80 can reach 3200 PSI. At this time, the maximum output power of the battery pack 21 is about 2100W.

[0089] A partition 141 is provided in the middle of the battery compartment 14. The partition 141 divides the battery compartment 14 into two sub-battery compartments 14. The two battery packs 21 are respectively located in the two sub-battery compartments 14, and the interfaces of the two battery packs 21 are relatively facing the partition 141. Electrodes 22 are provided on both sides of the partition 141 facing the two sub-battery compartments 14. The two electrode sheets 22 correspond to the two battery packs 21 one by one. Two battery pack unlocking keys 1411 are provided at the upper end of the partition 141. The two battery pack unlocking keys 1411 respectively control the unlocking of the two battery packs 21. When the battery pack 21 is placed in the battery compartment 14, the battery pack 21 is locked, and the battery pack 21 cannot be taken out of the battery compartment 14; when the battery pack unlocking key 1411 is pressed, the battery pack 21 is unlocked, and the battery pack 21 can be taken out of the battery compartment 14. A top cover 13 is provided on the top of the housing 10. The top cover 13 is used to open and close the battery compartment 14. The opening of the battery compartment 14 faces upward, and the battery pack 21 is inserted into the battery compartment 14 in a vertical state.

[0090] Reference Figure 4 and Figure 5 The battery pack 21 is located above the motor 41 and the pump 42. The control board 31 is located in front of the battery pack 21. The control board 31 has a cooling fan 32, which can dissipate heat from the control board 31. The power management board 23 is located between the two battery packs 21. The power management board 23 is used to manage the use status of the battery pack 21, such as determining the discharge order of the two battery packs 21, monitoring the power of the battery pack 21, etc.

[0091] Reference Figures 3 to 7 , the housing 10 has a heat dissipation air path for dissipating heat from the battery pack 21. The housing 10 is provided with an air inlet 16 and an air outlet 17, and a heat dissipation air path is formed between the air inlet 16 and the air outlet 17, and the heat dissipation air path is located in the housing 10. In some embodiments, from the air inlet 16 to the air outlet 17, the battery compartment 14 and the control board 31 are sequentially located on the heat dissipation air path, that is, the heat dissipation air path can dissipate heat from the battery compartment 14 and the control board 31 at the same time. In some embodiments, from the air inlet 16 to the air outlet 17, the battery compartment 14, the cooling fan 32 and the control board 31 are sequentially located on the heat dissipation air path, that is, the heat dissipation air path can dissipate heat from the battery compartment 14, the cooling fan 32 and the control board 31 at the same time. In some embodiments, from the air inlet 16 to the air outlet 17, the battery compartment 14, the power management board 23 and the control board 31 are sequentially located on the heat dissipation air path, that is, the heat dissipation air path can dissipate heat from the battery compartment 14, the power management board 23 and the control board 31 at the same time. In the above embodiments, the heat dissipation air path can not only pass through the battery compartment 14, but also pass through the control board 31, that is, the control board 31 not only has its own heat dissipation fan 32 for heat dissipation, but also has a heat dissipation air path to dissipate heat for it at the same time, so the heat dissipation effect is good.

[0092] Reference Figure 8 and Fig. 9 The housing 10 has at least two rod mounting parts 110 at the rear side. The two rod mounting parts 110 are spaced apart along the height direction of the housing 10. The rod 50 is mounted on the rod mounting parts 110. The housing 10 is provided with a running wheel 60 at the bottom. The rod 50 is used to pull the whole machine to move, so as to facilitate the movement of the whole machine. In some embodiments, the rod 50 is a telescopic rod. When the high-pressure cleaning machine needs to be pulled to move, the rod 50 is extended. Fig. 9 When the high pressure cleaning machine reaches the target position, the pull rod 50 is shortened, such as Figure 8 The pull rod 50 is provided with a pull rod unlocking key 51. By pressing the pull rod unlocking key 51, the pull rod 50 can be extended or shortened. By releasing the pull rod unlocking key 51, the pull rod 50 is locked.

[0093] Reference Figure 8 , and combined with Figure 6 and Figure 7 The air inlet 16 is disposed on the rod mounting portion 110 located at the upper rear side of the housing 10, and the opening of the air inlet 16 faces the lower side of the high-pressure cleaning machine. This position can block the air inlet 16 to achieve a waterproof effect of the air inlet 16. Figures 8 to 10 In some embodiments, the air outlet 17 is provided with a group, which is located on the left or right side of the housing 10. In some embodiments, the air outlet 17 is provided with two groups, which are located on the left and right sides of the housing 10 respectively.

[0094] Reference Fig.11 and Fig.12 There is a gap between the rear shell 12 and the pull rod 50, and the gap forms a water pipe storage space 70. A hose reel 71 is provided on the rear shell 12, and the central axis of the hose reel 71 is substantially parallel to the forward direction of the walking wheel 60. The water pipe 72 connecting the pump 42 and the water gun 80 is wound on the hose reel 71, and the hose reel 71 can rotate relative to the housing 10 to retract and release the water pipe 72. In addition, a water pipe guide portion 73 is provided on the housing 10 to guide the direction of the water pipe 72. At least two guide holes are provided on the water pipe guide portion 73. One end of the water pipe 72 is connected to the water outlet joint 422 of the pump 42, and the other end first passes through one of the guide holes and then is wound on the hose reel 71, and then passes through the other guide hole and is connected to the water gun 80. The water inlet joint 421 of the pump 42 is connected to the water source.

[0095] Reference Fig.10 and Fig.11, the height of the running wheel 60 is D, the height of the whole machine when the pull rod 50 is not pulled out is H, and the distance between the outer end surfaces of the two running wheels 60 is L. In some embodiments, D / H is greater than or equal to 25%; in some embodiments, D / H is greater than or equal to 28%; in some embodiments, D / H is greater than or equal to 30%. Such a configuration makes the wheels larger and better for controlling the machine. In some embodiments, H is about 60cm, L is about 48cm, and D is about 18cm.

[0096] The water gun 80 includes a gun handle 81 and a gun rod 82, and the gun handle 81 and the gun rod 82 are detachably connected. There are two ways to use the water gun 80. One is that the gun handle 81 is not connected to the gun rod 82, and the gun handle 81 is directly connected to the nozzle 100, that is, it can be used as a short gun; the other is that the gun handle 81 and the gun rod 82 are assembled and the gun rod 82 is connected to the nozzle 100, that is, it can be used as a long gun. The short gun can be equipped with a special nozzle for direct water flushing, and the long gun can be equipped with a high-pressure nozzle for high-pressure flushing. Figures 1 to 3 The nozzle 100 has various models. To facilitate the placement of the nozzle 100, a nozzle receiving seat 111 is provided on the rod mounting portion 110 located on the upper rear side of the housing 10. The nozzle receiving seat 111 is provided with a plurality of receiving holes 112. Different models of nozzles 100 can be placed in corresponding receiving holes 112. Different models of nozzles 100 can be set in different colors for easy identification by users, with good visualization effect.

[0097] Reference Figures 13 to 19 The casing 10 is provided with an upper buttstock 91 and a lower buttstock 92, wherein the upper buttstock 91 is provided with a first mounting groove 911 and a second mounting groove 912. The first mounting groove 911 can be used to install the gun handle 81 that is not assembled with the gun barrel 82, the second mounting groove 912 can be used to install the gun barrel 82 that is not assembled with the gun handle 81, and the second mounting groove 912 can also be used to install the water gun 80 as a whole after the gun handle 81 and the gun barrel 82 are assembled. The lower buttstock 92 is used to support the lower end of the gun barrel 82, and the lower buttstock 92 can accommodate the end of the gun barrel 82 without removing the nozzle 100. A water leakage hole 921 is provided at the bottom of the lower buttstock 92, and the residual water in the water gun 80 can flow out from the water leakage hole 921. That is, there are two ways to store the water gun 80: one is as Figures 13 to 15 As shown, the gun barrel 82 and the gun handle 81 are not assembled, the gun barrel 82 is installed in the second installation groove 912 of the upper gun stock 91 and the lower gun stock 92, and the gun handle 81 is installed in the first installation groove 911 of the upper gun stock 91; another example is Fig.16 As shown, the gun rod 82 and the gun handle 81 are assembled into a water gun 80 as a whole, and the assembled water gun 80 is installed in the second mounting groove 912 of the upper gun stock 91 and the lower gun stock 92. In this way, the first mounting groove 911 of the upper gun stock 91 is vacant.

[0098] The upper buttstock 91 is detachably connected to the housing 10 and / or the lower buttstock 92 is detachably connected to the housing 10. In some embodiments, the upper buttstock 91 is connected to the housing 10 by screws and / or the lower buttstock 92 is connected to the housing 10 by screws. Fig.19 , the housing 10 has an upper mounting portion 113 and a lower mounting portion 114, the upper butt 91 is mounted to the upper mounting portion 113 by screws, and the lower butt 92 is mounted to the lower mounting portion 114 by screws. In some embodiments, the housing 10 is provided with an upper mounting portion 113 and a lower mounting portion 114 on both sides along the left-right direction, and the upper butt 91 and the lower butt 92 can be connected to the upper mounting portion 113 and the lower mounting portion 114 on the left side, and can also be connected to the upper mounting portion 113 and the lower mounting portion 114 on the right side. In some embodiments, the housing 10 is provided with an upper mounting portion 113 and a lower mounting portion 114 on both sides along the left-right direction, the upper butt 91 and the lower butt 92 are connected to the upper butt 91 and the lower butt 92 on the left side, and the upper butt 91 and the lower butt 92 are also connected to the upper butt 113 and the lower mounting portion 114 on the right side. Through the above arrangement, the water gun 80 can be stored on the left side of the housing 10 or on the right side of the housing 10 to meet different usage requirements of users.

[0099] When the gun rod 82 is mounted to the upper butt 91 and the lower butt 92, the angle α is set with the ground. In some embodiments, the angle α is 45-80 degrees. In some embodiments, the angle α is 60-75 degrees. For example, it can be 60 degrees, 65 degrees, 70 degrees or 75 degrees.

[0100] In some embodiments, the water gun 80 can also be stored horizontally on the upper side of the housing 10. The housing 10 is provided with a groove at the rear side of the top cover 13 of the battery compartment 14, and the water gun 80 can be fixed through the groove.

[0101] Reference Fig. 20 and Fig.21 The gun handle 81 has a trigger 813, and the trigger 813 can be used to control the start and stop of the water gun 80.

[0102] Reference Figures 22 to 31 The gun rod 82 is a telescopic rod, and the gun rod 82 can change its length by telescoping. The gun rod 82 includes an inner tube 823, an outer tube 822 and a gun barrel 821. The outer tube 822 is sleeved on the outer side of the inner tube 823, and the gun barrel 821 is sleeved on the outer side of the outer tube 822. The outer tube 822 can extend or retract relative to the inner tube 823 and the gun barrel 821. The locking mechanism 83 is configured to lock and unlock the outer tube 822 by changing the friction between it and the outer tube 822. Alternatively, the locking mechanism 83 is configured to enable the outer tube 822 to be locked to any position.

[0103] Specifically, the locking mechanism 83 includes an elastic member and a driving member, and the driving member can drive the elastic member to compress or loosen the outer tube 822 along the radial direction of the outer tube 822 to increase or reduce the friction between the elastic member and the outer tube 822, thereby achieving locking or unlocking of the outer tube 822.

[0104] In some embodiments, reference Figure 22 to Figure 27 The driving member is a trigger 831, and the trigger 831 is rotatably connected to the gun barrel 821 through a rotating shaft, and the axis of the rotating shaft is parallel to the axis of the gun barrel 821. A driving protrusion 8311 is formed at one end of the trigger 831, and a receiving groove 8211 connected to its own center hole is provided on the gun barrel 821. The elastic member is an elastic block 832, and the elastic block 832 is movably arranged in the receiving groove 8211. A rigid seat 833 can also be arranged in the receiving groove 8211, so that part of the elastic block 832 is accommodated in the rigid seat 833. The driving protrusion 8311 is at least partially located in the receiving groove 8211, and the driving protrusion 8311 can support the rigid seat 833. The profile of the driving protrusion 8311 is configured to drive the elastic block 832 to compress or loosen the outer tube 822 when the trigger 831 rotates. Specifically, the profile of the driving protrusion 8311 is spiral. The trigger 831 rotates in the first direction, and the spiral driving protrusion 8311 gradually lifts the rigid seat 833 and the elastic block 832 as the trigger 831 moves, so that the elastic block 832 presses against the outer tube 822 and deforms to lock the outer tube 822, so that the outer tube 822 is locked. Fig. 22 and Fig.26 The trigger 831 rotates in the second direction, and the spiral driving protrusion 8311 deviates from the rigid seat 833 and the elastic block 832 with the action of the trigger 831, and the elastic block 832 is separated from the outer tube 822, and the locking state of the elastic block 832 on the outer tube 822 is released, and the outer tube 822 is unlocked, referring to Fig.23 , Fig.24 and Fig. 27 .

[0105] The trigger 831 is C-shaped. A locking protrusion 8312 is provided at the other end of the trigger 831, and a locking groove 8212 is also provided on the barrel 821. The locking protrusion 8312 can be engaged with the locking groove 8212 to fix the trigger 831 in a locked state. When the trigger 831 is rotated in the first direction to a position where the elastic member locks the outer tube 822, the locking protrusion 8312 can be engaged in the locking groove 8212, thereby keeping the trigger 831 in a locked state.

[0106] In some embodiments, reference Figure 28 to Figure 31The driving member is a rotary sleeve 835, the inner surface of the rotary sleeve 835 includes a first conical surface 8351, and the inner surface of the rotary sleeve 835 is provided with an internal thread 8352 at the large end side close to the conical surface. The elastic member is provided at the end of the gun barrel 821, and the end of the gun barrel 821 has an external thread 8213. The rotary sleeve 835 is threadedly connected to the gun barrel 821. When the rotary sleeve 835 rotates, the conical surface can drive the elastic member to compress or loosen the outer tube 822. The rotary sleeve 835 rotates in the direction of tightening with the external thread 8213 of the gun barrel 821, and the first conical surface 8351 in the rotary sleeve 835 causes the elastic member to deform and lock the outer tube 822, and the outer tube 822 is locked. Fig.28 and Fig.30 The rotating sleeve 835 is rotated in the direction of loosening the external thread 8213 of the barrel 821, and the elastic member is reset, and the locking state of the elastic member on the outer tube 822 is released, and the outer tube 822 is unlocked, referring to Fig.29 and Fig.31 .

[0107] The elastic member includes a plurality of elastic arms 836, which are spaced apart along the circumference of the outer tube 822. The outer wall surface of the elastic arm 836 includes a second conical surface, and the second conical surface of the elastic arm 836 is in contact with the first conical surface 8351 of the rotary sleeve 835.

[0108] The locking mechanism 83 provided in the above embodiment realizes the stepless adjustment of the telescopic length of the water gun 80, and the locking mechanism 83 has a simple structure, and has relatively low requirements on the precision of processing, manufacturing and mutual coordination; and the structural form of the locking mechanism 83 determines that the outer tube 822 does not have looseness, and has its own adjustable damping feel; and the structural form of the locking mechanism 83 determines that no twisting action is required for locking and unlocking, thereby ensuring the life of the inner tube 823.

[0109] The housing 10 and the battery pack 21 and the drive assembly 40 disposed in the housing 10 together constitute the host. Figure 1 The housing 10 of the host is provided with a switch key 115, a first speed adjustment key 116 and a first display unit 117. The switch key 115 is used to start and shut down the host, the first speed adjustment key 116 is used to switch gears, and the first display unit 117 is used to display the current gear.

[0110] The host and water gun 80 are paired via 2.4G wireless to achieve synchronous control of the gear adjustment and light display status. Fig.21 The water gun 80 is provided with a second speed adjustment key 811 and a second display unit 812. After the host is powered on, the water gun 80 can be controlled by wireless 2.4G, and the gear can be switched by operating the second speed adjustment key 811. The second display unit 812 can display the current gear, and can also display the power of the battery in the water gun 80 or the power of the battery pack 21 of the host.

[0111] The gears of the high-pressure cleaning machine include the first working gear, the second working gear and the third working gear. The first working gear corresponds to the first output power, which is relatively low. After selecting this gear, the machine continues to work until it is turned off; the second working gear corresponds to the second output power, which is relatively high. After selecting this gear, the machine continues to work until it is turned off; the third working gear corresponds to the third output power, which is the largest and can provide maximum pressure. After selecting this gear, the machine will automatically turn off after working for a preset time period (such as 30s).

[0112] After the high-pressure cleaner is powered on, the gear is selected first, and then the machine works according to the selected gear. In order to discharge the battery pack 21 efficiently, the present application also provides a control method for the high-pressure cleaner. To implement the control method, the motor 41 adopts a DC brushless motor, and the motor 41 includes a rotor and a multi-phase stator winding. In addition, the high-pressure cleaner also includes a power module 400, a drive circuit 300 and a control module 200. The power module 400 is used to provide electrical energy, and the power module includes the above-mentioned battery pack 21; the drive circuit 300 is electrically connected to the motor 41 and the power module 400, and is used to load the electrical signal provided by the power module to the motor 41; the control module 200 is used to output a pulse width modulation signal to control the drive circuit 300.

[0113] As one of the embodiments, Fig.32 As shown, the drive circuit 300 includes a plurality of switch elements Q1, Q2, Q3, Q4, Q5, and Q6. Each gate terminal of the switch element is electrically connected to the control module 200 for receiving a control signal from the control module 200. Each drain or source of the switch element is connected to the stator winding of the motor 41. The switch elements Q1-Q6 receive control signals from the control module 200 to change their respective conduction states, thereby changing the current loaded on the stator winding of the motor 41 by the power module 400. In one embodiment, the drive circuit 300 may be a three-phase bridge driver circuit including six controllable semiconductor power devices (e.g., FET, BJT, IGBT, etc.). It is understood that the above-mentioned switch element may also be any other type of solid-state switch, such as an insulated gate bipolar transistor (IGBT), a bipolar junction transistor (BJT), etc. The high-pressure cleaning machine also includes a detection module 500, which is used to detect the operating voltage and operating current of the power module 400.

[0114] The control module 200 is configured to: obtain the current gear position of the high-pressure cleaning machine, and calculate the preset output power of the power module 400 according to the current gear position; calculate the actual output power of the power module 400 according to the working voltage and working current of the power module 400; when the actual output power is not equal to the preset output power, adjust the duty cycle of the pulse width modulation signal so that the actual output power of the power module 400 remains basically equal to the preset output power.

[0115] Specifically, the control module is configured to: increase the duty cycle of the pulse width modulation signal when the actual output power of the battery pack is less than the preset output power; and reduce the duty cycle of the pulse width modulation signal when the actual output power of the battery pack 21 is greater than the preset output power.

[0116] The following will be combined Fig.33 A flow chart illustrating a control method for a high pressure cleaning machine, the method comprising the following steps:

[0117] S110: Obtain the current gear position of the high-pressure cleaning machine, and calculate the preset output power of the power module 400 according to the current gear position;

[0118] S120: Calculating the actual output power of the power module 400 according to the operating voltage and the operating current of the power module;

[0119] S130: When the actual output power is not equal to the preset output power, the duty cycle of the pulse width modulation signal is adjusted to keep the actual output power of the power module 400 substantially equal to the preset output power.

[0120] Specifically, when it is detected that the actual output power of the battery pack 21 is less than the preset output power, the duty cycle of the pulse width modulation signal is increased. Generally, there are two situations that cause the actual output power of the battery pack 21 to decrease: in one case, when the battery pack 21 is used for a longer time, the voltage of the battery pack 21 will decrease, resulting in a decrease in the current of the motor 41, thereby reducing the speed of the motor 41, and then reducing the pressure and flow of the water pump 42. At this time, the duty cycle of the pulse width modulation signal is increased to increase the output current of the battery pack 21, thereby maintaining the output power of the battery pack 21 constant, indirectly increasing the speed of the motor 41, so that the pressure and flow of the water pump 42 are stable within a certain range. In another case, when the caliber of the nozzle 100 is switched from small to large, the flow increases and the pressure decreases. In order to match the pressure with the flow, the speed of the motor 41 will be controlled to increase, and at this time the output current of the battery pack 21 does not meet the requirements. At this time, the duty cycle of the pulse width modulation signal is increased to increase the output current of the battery pack 21, indirectly increasing the speed of the motor 41, so that the pressure and flow of the water pump 42 match the caliber of the nozzle 100 at this time.

[0121] When it is detected that the actual output power of the battery pack 21 is greater than the preset output power, the duty cycle of the pulse width modulation signal is reduced. Generally, there is a situation that causes the actual output power of the battery pack 21 to increase: when the diameter of the nozzle 100 switches from large to small, the flow rate decreases and the pressure increases. In order to reduce the pressure and match the flow rate, the speed of the motor 41 will be controlled to decrease, resulting in excessive output current of the battery pack 21. At this time, the duty cycle of the pulse width modulation signal is reduced to reduce the output current of the battery pack 21, so as to indirectly reduce the speed of the motor 41, so that the pressure and flow of the water pump 42 are stable and match the diameter of the nozzle 100 at this time.

[0122] The following will be combined Fig.34 A flow chart illustrating a control method for a high pressure cleaning machine, the method comprising the following steps:

[0123] S210: Detecting the current gear position of the high-pressure cleaning machine, and calculating the preset pressure of the pump 42 according to the current gear position;

[0124] S220: Detecting the actual pressure of the pump 42;

[0125] S230: When the actual pressure is not equal to the preset pressure, the duty cycle of the pulse width modulation signal is adjusted to keep the actual pressure of the power module 400 substantially equal to the preset pressure.

[0126] Specifically, when it is detected that the actual pressure of the pump 42 is less than the preset pressure, the duty cycle of the pulse width modulation signal is increased. Generally, there are two situations that cause the pressure of the pump 42 to decrease: one is when the battery pack 21 is used for a longer time and the power is reduced; the other is when the nozzle 100 is switched from a small diameter to a large diameter, and the water pressure decreases when the water flow rate remains unchanged.

[0127] When it is detected that the actual pressure of the pump 42 is greater than the preset pressure, the duty cycle of the pulse width modulation signal is reduced. Generally, there is a situation that causes the pressure of the pump 42 to increase: when the diameter of the nozzle 100 is switched from large to small.

[0128] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. High pressure cleaning machine, include: The housing (10) is formed with a battery compartment (14) and a drive compartment (15); A battery pack (21) is accommodated in the battery compartment (14); A control panel (31) is disposed in the housing (10); A drive assembly (40), disposed in the drive compartment (15), comprising a pump (42) and a motor (41) for driving the pump (42); A water gun (80) connected to the pump (42) via a water pipe (72); It is characterized in that The housing (10) is provided with an air inlet (16) and an air outlet (17), a heat dissipation air path is formed between the air inlet (16) and the air outlet (17), the heat dissipation air path is located in the housing (10), and in a direction from the air inlet (16) to the air outlet (17), the battery compartment (14) and the control panel (31) are sequentially located on the heat dissipation air path.

2. The high pressure cleaning machine according to claim 1, It is characterized in that It also includes a power management board (23), which is arranged in the housing (10) and is used to manage the use status of the battery pack (21); from the air inlet (16) to the air outlet (17), the battery compartment (14), the power management board (23) and the control board (31) are sequentially located on the heat dissipation air path.

3. The high pressure cleaning machine according to claim 2, It is characterized in that The number of the battery packs (21) is two, and the two battery packs (21) are respectively located on two sides of the power management board (23).

4. The high pressure cleaning machine according to claim 1, It is characterized in that A cooling fan (32) is provided on the control panel (31); from the air inlet (16) to the air outlet (17), the battery compartment (14), the cooling fan (32) and the control panel (31) are sequentially located on the cooling air path.

5. The high pressure cleaning machine according to claim 1, It is characterized in that A top cover (13) is provided on the top of the housing (10), and the top cover (13) is used to open or close the battery compartment (14), and the battery pack (21) is inserted into the battery compartment (14) in a vertical state.

6. The high pressure cleaning machine according to claim 1, It is characterized in that A partition (141) is provided in the middle of the battery compartment (14), and the partition (141) divides the battery compartment (14) into two sub-battery compartments (14); the number of the battery packs (21) is two, and the two battery packs (21) are respectively located in the two sub-battery compartments (14), and the interfaces of the two battery packs (21) are relatively oriented toward the partition (141).

7. The high pressure cleaning machine according to claim 1, It is characterized in that The number of the battery packs (21) is two, and the two battery packs (21) are arranged in parallel.

8. The high pressure cleaning machine according to claim 1, It is characterized in that The battery pack (21) is located above the motor (41) and the pump (42), and the control panel (31) is located in front of the battery pack (21).

9. The high pressure cleaning machine according to claim 1, It is characterized in that The opening of the air inlet (16) faces the lower side of the high-pressure cleaning machine.

10. The high pressure cleaning machine according to claim 1, It is characterized in that The air outlet (17) is opened on the left side and / or the right side of the casing (10).

11. High pressure cleaning machine, include: The housing (10) is formed with a battery compartment (14) and a drive compartment (15); A battery pack (21) is accommodated in the battery compartment (14); A control panel (31) is disposed in the housing (10); A drive assembly (40), disposed in the drive compartment (15), comprising a pump (42) and a motor (41) for driving the pump (42); A water gun (80) connected to the pump (42) via a water pipe (72); It is characterized in that The battery pack (21) is located above the motor (41) and the pump (42), and the control panel (31) is located in front of the battery pack (21).

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