Cleaning machine and electric tool

Abstract

The utility model provides a cleaning machine and an electric tool. The cleaning machine comprises a main machine shell; the pump body is arranged on the main machine shell; the machine core assembly is installed in the main machine shell, the machine core assembly comprises a motor and a fan, and the motor is used for driving the pump body to operate; the control assembly is installed in the main machine shell and used for controlling the motor to operate; wherein the fan is arranged between the motor and the control assembly, a first air duct and a second air duct are arranged in the main machine shell, the first air duct passes through the motor, the second air duct passes through the control assembly, and when the fan rotates, air in the first air duct and air in the second air duct are driven to flow at the same time so as to cool the motor and the control assembly. The cooling efficiency and the heat dissipation performance of the cleaning machine can be effectively improved on the basis of not increasing too much cost and a complex structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric tools, in particular to a cleaning machine and an electric tool. BACKGROUND

[0002] With the progress of society and the development of technology, many electric tools have gradually entered the production and life of people, and people can complete various operations through electric tools, which brings many conveniences to production and life. The main machine of some electric tools usually includes a control board and a motor, wherein the motor is used to output torque to drive the transmission device to work, and the control board is used to control the working state of the motor.

[0003] For example, a pressure cleaning machine (high-pressure cleaning machine) as a cleaning device capable of generating high-pressure water flow to wash the surface of an object is widely used in various fields of life and work, especially in the cleaning process of outdoor courtyards, motor vehicle lanes and sidewalks with concrete structure surfaces and tracks, fences or cars with hard surfaces, and has good cleaning effect.

[0004] In the cleaning machine device, the heat dissipation of the motor and the control assembly is crucial. However, in the current cleaning machine cooling scheme, the motor and the control assembly are difficult to achieve good cooling effect, and the heat dissipation performance of the cleaning machine needs to be improved. UTILITY MODEL CONTENT

[0005] Therefore, the purpose of the present application is to provide a cleaning machine and an electric tool to solve the problem of poor cooling effect of the motor and the control assembly in the full air cooling mode.

[0006] In order to achieve one of the above purposes, a cleaning machine is provided, comprising:

[0007] a main machine shell;

[0008] a pump body installed in the main machine shell;

[0009] a movement core assembly installed in the main machine shell, the movement core assembly comprising a motor and a fan, the motor being used to drive the pump body to operate;

[0010] a control assembly installed in the main machine shell, used to control the operation of the motor;

[0011] wherein the fan is arranged between the motor and the control assembly, the main machine shell is provided with a first air duct and a second air duct, the first air duct passes through the motor, the second air duct passes through the control assembly, and the fan drives the gas in the first air duct and the second air duct to flow at the same time when the fan rotates, so as to cool the motor and the control assembly.

[0012] Optionally, the main machine housing is provided with a first cooling area, a confluence area and a second cooling area, the motor is at least partially located in the first cooling area, the control assembly is at least partially located in the second cooling area, and the fan is at least partially located in the confluence area, the confluence area being located between the first cooling area and the second cooling area.

[0013] The first cooling area and the confluence area are communicated through the first air duct, and the second cooling area and the confluence area are communicated through the second air duct.

[0014] Optionally, the fan is a centrifugal fan, and when the fan rotates, the gas in the first cooling area is driven to flow into the confluence area through the first air duct and then flow out of the confluence area, and the gas in the second cooling area is driven to flow into the confluence area through the second air duct and then flow out of the confluence area.

[0015] Optionally, the machine core assembly comprises a machine core housing for accommodating the motor and the fan, and the control assembly comprises a control machine housing, the control machine housing being connected with the machine core housing.

[0016] The machine core housing comprises a first air flow port, the control machine housing comprises a second air flow port, and a shared air flow port is arranged between the first air flow port and the second air flow port, the shared air flow port being arranged on the machine core housing and / or the control machine housing; the first air flow port and the shared air flow port are located in the first air duct, and the second air flow port and the shared air flow port are located in the second air duct.

[0017] Optionally, the first air flow port is arranged on a side of the machine core housing away from the control machine housing, the second air flow port is arranged on a side of the control machine housing away from the machine core housing, and the shared air flow port is arranged around the fan.

[0018] Optionally, the cleaning machine further comprises:

[0019] A first partition plate is arranged between the main machine housing and the machine core housing, and is used for separating the first cooling area and the confluence area.

[0020] A second partition plate is arranged between the main machine housing and the control machine housing, and is used for separating the second cooling area and the confluence area.

[0021] Optionally, the motor comprises a stator and a rotor, the rotor is located outside the stator, a central part of the rotor is provided with an output shaft, the output shaft is connected with the pump body, and the fan is formed on the rotor.

[0022] The control assembly includes a control board and a heat sink accommodated in the control casing, the heat sink is located between the control board and the fan, and a ventilation gap is provided between at least part of the outer edge of the control board and the control casing, the ventilation gap is located in the second air duct.

[0023] Optionally, the main casing includes a first casing and a second casing which are connected together along a first direction, the second casing is provided with a ventilation structure away from one side of the first casing, the ventilation structure includes a shielding part for being separated from the outside in the first direction and a ventilation opening for being communicated with the outside; the ventilation opening includes a first ventilation opening, a second ventilation opening and a second ventilation opening which are arranged in a second direction, the second direction intersects the first direction; the first air duct is in fluid communication with the first ventilation opening and the second ventilation opening respectively, and the second air duct is in fluid communication with the second ventilation opening and the second ventilation opening respectively.

[0024] To achieve one of the above purposes, an electric tool is also provided, which includes:

[0025] a main casing;

[0026] a functional part installed in the main casing;

[0027] a core assembly installed in the main casing, the core assembly includes a motor and a fan, the motor is used to drive the functional part to operate;

[0028] a control assembly installed in the main casing, used to control the motor to operate;

[0029] wherein the fan is arranged between the motor and the control assembly, the main casing is provided with a first cooling area, a convergence area and a second cooling area, the convergence area is located between the first cooling area and the second cooling area;

[0030] the first cooling area and the convergence area are communicated through a first air duct, and the second cooling area and the convergence area are communicated through a second air duct, the first air duct passes through the motor, the second air duct passes through the control assembly, and when the fan rotates, the gas in the first air duct and the second air duct flows simultaneously to cool the motor and the control assembly.

[0031] Optionally, the core assembly includes a core casing for accommodating the motor and the fan, and the control assembly includes a control casing, the control casing is connected with the core casing.

[0032] The core shell comprises a first air flow port, the control machine shell comprises a second air flow port, and the core shell and / or the control machine shell comprises a shared air flow port; the first air flow port is located in the first air duct with the shared air flow port, and the second air flow port is located in the second air duct with the shared air flow port.

[0033] The first partition plate is located between the first cooling area and the confluence area, and the second partition plate is located between the second cooling area and the confluence area.

[0034] Compared with the prior art, the cleaning machine and the electric tool provided by the application can form two independent cooling air flows through the rotation of the fan, and the motor and the control assembly can be cooled and radiated respectively, so that the mixing of heat in the cooling process is effectively avoided, the temperature of the motor and the control assembly in the operation process is effectively reduced, and the service life of the motor and the control assembly is prolonged. The application can effectively improve the cooling efficiency and the heat dissipation performance of the cleaning machine without increasing too much cost and complex structure. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The overall structure schematic diagram of the cleaning machine provided by the embodiment of the application is shown.

[0036] Figure 2 The cutaway view of the main body part of the cleaning machine provided by the embodiment of the application is shown.

[0037] Figure 3 The cutaway view of the main body part of the cleaning machine provided by the embodiment of the application is shown.

[0038] Figure 4 The structure schematic diagram of the fan in the cleaning machine provided by the embodiment of the application is shown.

[0039] Figure 5 The structure schematic diagram of the main body part of the cleaning machine provided by the embodiment of the application after removing the main machine shell is shown.

[0040] Figure 6 The structure schematic diagram of the main body part of the cleaning machine provided by the embodiment of the application after removing the main machine shell is shown.

[0041] Figure 7 The cutaway view of the main body part of the cleaning machine provided by the embodiment of the application after removing the main machine shell is shown.

[0042] Figure 8 The structure schematic diagram of the main body part of the cleaning machine provided by the embodiment of the application after removing the main machine shell and the control machine shell is shown.

[0043] Figure 9A structure schematic diagram of a main body part of a cleaning machine provided by an embodiment of the present application after removing a second casing;

[0044] Figure 10 A structure schematic diagram of a second casing of a cleaning machine provided by an embodiment of the present application;

[0045] Figure 11 For Figure 10 An enlarged schematic diagram at A in FIG. 1.

[0046] Labeling description:

[0047] 100, cleaning machine; 1, main casing; 11, first air duct; 12, second air duct; 101, first cooling area; 102, convergence area; 103, second cooling area; 104, shielding part; 105, ventilation opening; 1001, first ventilation opening; 1002, second ventilation opening; 1003, third ventilation opening; 10, pump body; 111, first casing; 112, second casing; 2, core assembly; 20, core casing; 201, first air flow opening; 202, shared air flow opening; 21, motor; 210, output shaft; 211, stator; 212, rotor; 22, fan; 3, control assembly; 30, control casing; 301, second air flow opening; 302, ventilation gap; 31, control board; 32, heat sink; 41, first partition; 42, second partition; 5, spray gun. DETAILED DESCRIPTION

[0048] The present application will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and any changes in structure, method, or function made by those skilled in the art based on these embodiments are included in the scope of protection of the present application.

[0049] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as their common meanings by those skilled in the art. The terms "first", "second", and similar terms used in the embodiments of the present application do not represent any order, number, or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like only represent relative positional relationships, which can change accordingly when the absolute positions of the described objects change.

[0050] As Figure 1As shown, the cleaning machine 100 includes a cleaning machine main body placed horizontally on a support, which mainly consists of a main machine shell, a pump body 10, a machine core assembly and a control board. The pump body 10, the machine core assembly and the control board are installed in the main machine shell. The machine core assembly includes a motor and a fan. The motor can drive the pump body 10 to operate and the fan to rotate. The pump body 10 is used to pump liquid to the spray gun 5.

[0051] In a related technology, the fan on the motor adopts an axial flow fan blade, one end of which sucks air and the other end of which discharges air. The sucked cold air is used to cool the motor. At the same time, a water cooling system is used to cool the control board. Although this scheme can improve the cooling efficiency, the addition of the water cooling system makes the overall structure complex, and the cost also increases. The installation of the water cooling pipe, the circulation system of the cooling liquid and other components increase the complexity and manufacturing cost of the equipment.

[0052] In another related technology, the fan on the motor also adopts an axial flow fan blade, one end of which sucks air and the other end of which discharges air. The control board is located at the air suction end, and the motor is located downstream of the air flow of the control board. Compared with the cooling scheme combining air cooling and water cooling, this scheme has a simpler structure. However, in this scheme, the hot air generated by the control board is sucked in to cool the motor, and the control board cannot cool the components on the back of the control board, resulting in low cooling efficiency. At the same time, because the cooling air flow passes through the control board first and then flows to the motor, the heat of the control board will be transferred to the air flow for cooling the motor, affecting the cooling effect of the motor, and the control board itself is not fully cooled.

[0053] Therefore, the present application provides a cleaning machine 100, which cools the motor and the control assembly by two independent cooling air flows at the same time, improves the heat dissipation performance of the cleaning machine without increasing too much cost and complex structure.

[0054] In some preferred embodiments, as shown in Figures 1 to 11 As shown, the cleaning machine 100 includes a main machine shell 1 and a pump body 10, a machine core assembly 2 and a control assembly 3. The pump body 10 is installed on the main machine shell 1. The part of the pump body 10 outside the main machine shell 1 can be connected to the spray gun 5, and the part of the pump body 10 inside the main machine shell 1 can be connected to the motor 21. The machine core assembly 2 is installed in the main machine shell 1 and includes the motor 21 and the fan 22. The motor 21 is used to drive the pump body 10 to operate. The control assembly 3 is installed in the main machine shell 1 and is used to control the operating state of the motor 21.

[0055] The fan 22 is arranged between the motor 21 and the control assembly 3, the first air duct 11 and the second air duct 12 are arranged in the main machine shell 1, the first air duct 11 passes through the motor 21, the second air duct 12 passes through the control assembly 3, and the fan 22 drives the gas in the first air duct 11 and the second air duct 12 to flow at the same time when the fan 22 rotates, so that the motor 21 and the control assembly 3 are cooled at the same time. Specifically, the fan can be an independent fan, and the fan can also be mounted on the motor shaft, and when the motor shaft rotates, the fan blades are driven to rotate.

[0056] According to the cleaning machine 100 provided by the embodiment of the present application, when the fan 22 rotates, two independent cooling air flows can be formed, one air flow passes through the motor 21 from the first air duct 11 to cool the motor 21, and the other air flow passes through the control assembly 3 from the second air duct 12 to cool the control board and the back elements in the control assembly 3, so that the motor 21 and the control assembly 3 are cooled at the same time, the temperature of the motor 21 and the control assembly 3 in the running process is effectively reduced, the stable operation of the equipment is ensured, and the service life of the motor 21 and the control assembly 3 is prolonged.

[0057] Through the above structure and cooling path, the present application utilizes one fan 22 to rotate to form two independent cooling air flows, which can cool the motor 21 and the control assembly 3 respectively, effectively avoids the mixing of heat in the cooling process of the cooling air flow, improves the cooling efficiency, solves the cooling defects of the existing full air cooling mode, and at the same time, compared with the cooling mode combining air cooling and water cooling, the cooling performance of the cleaning machine can be effectively improved without increasing too much cost and complex structure.

[0058] In some embodiments, as shown in Figure 2 , Figure 3 The main machine shell 1 is provided with a first cooling area 101, a confluence area 102 and a second cooling area 103, the motor 21 is at least partially located in the first cooling area 101, the control assembly 3 is at least partially located in the second cooling area 103, the fan 22 is at least partially located in the confluence area 102, and the confluence area 102 is located between the first cooling area 101 and the second cooling area 103. Wherein, the component is at least partially located in a certain area, which means that part or all of the component is located in the corresponding area.

[0059] The first cooling area 101 and the confluence area 102 are communicated through the first air duct 11, and the second cooling area 103 and the confluence area 102 are communicated through the second air duct 12. Three independent chambers are formed in the main shell 1, which are the first cooling area 101, the confluence area 102 and the second cooling area 103 respectively. Air is driven by the fan in the confluence area 102 to enter the confluence area 102 from the first cooling area 101 and the second cooling area 103 respectively, so as to form two independent cooling air flows, and the cooling air flows are radiated outward from the confluence area 102. The cooling air flow flowing through the first cooling area 101 mainly cools the motor 21, and the cooling air flow flowing through the second cooling area 103 mainly cools the control assembly 3. The air flow directions in the first air duct 11 and the second air duct 12 are opposite. The chambers are independent of each other, and the air flows do not interfere with each other.

[0060] In some embodiments, as shown in Figure 4 , the fan 22 is a centrifugal fan. When the fan 22 rotates, the gas in the first cooling area 101 is driven to flow into the confluence area 102 through the first air duct 11 and flow outward from the confluence area 102, and the gas in the second cooling area 103 is driven to flow into the confluence area 102 through the second air duct 12 and flow outward from the confluence area 102. The centrifugal fan uses centrifugal force to increase the pressure of the axial air flow in the radial direction and transport it to the outer peripheral side.

[0061] In some embodiments, as shown in Figure 5 , Figure 6 , Figure 7 , the movement core assembly 2 includes a movement core shell 20 for accommodating the motor 21 and the fan 22, and the control assembly 3 includes a control machine shell 30, which is fixedly connected with the movement core shell 20. Specifically, the control machine shell 30 and the movement core shell 20 are fixedly connected in a butt joint clamping manner.

[0062] The movement core shell 20 includes a first air flow port 201, the control machine shell 30 includes a second air flow port 301, and a shared air flow port 202 is arranged between the first air flow port 201 and the second air flow port 301. The shared air flow port 202 is arranged on the movement core shell 20. The first air flow port 201 and the shared air flow port 202 are located in the first air duct 11, and the second air flow port 301 and the shared air flow port 202 are located in the second air duct 12.

[0063] Of course, in other embodiments, the shared air flow port 202 can also be arranged on the control machine shell 30. Alternatively, the shared air flow port 202 is arranged on both the movement core shell 20 and the control machine shell 30.

[0064] It is understood that the first airflow inlet 201 and the second airflow inlet 301 are air inlets corresponding to the first cooling zone 101 and the second cooling zone 103, respectively, while the common airflow inlet 202 is the air outlet corresponding to the confluence zone 102. Alternatively, the first airflow inlet 201 and the second airflow inlet 301 are air outlets corresponding to the first cooling zone 101 and the second cooling zone 103, respectively, while the common airflow inlet 202 is the air inlet corresponding to the confluence zone 102. The airflow direction within each duct is opposite in both of these cases.

[0065] In some embodiments, such as Figure 7 As shown, the first airflow port 201 is located on the side of the core housing 20 away from the control housing 30, and the second airflow port 301 is located on the side of the control housing 30 away from the core housing 20. A common airflow port 202 is arranged around the fan 22. Specifically, the common airflow ports 202 are distributed in a ring around the outer periphery of the fan 22. The first airflow port 201 and the second airflow port 301 are respectively located on two opposing surfaces of the core housing 20 and the control housing 30. The first airflow port 201 is distributed in a ring around the motor shaft, and the second airflow port 301 covers the entire end face of the control housing 30.

[0066] When the fan 22 rotates, cooling airflows are formed between the first airflow port 201 and the common airflow port 202, and between the second airflow port 301 and the common airflow port 202, respectively. The cooling airflow flows outward from the common airflow port 202 on the outer periphery of the fan blades. The cooling airflow is distributed in a ring around the outer periphery of the motor 21 and the control component 3. The common airflow port 202 adopts a ring-shaped design, which can increase the heat dissipation area and make the cooling airflow more uniform and efficient when it flows out from the circumferential side, thus avoiding heat accumulation.

[0067] In some embodiments, such as Figure 9 , Figure 10 As shown, the cleaning machine 100 also includes a first partition 41 and a second partition 42. The first partition 41 is disposed between the main housing 1 and the core housing 20, separating the first cooling zone 101 from the confluence zone 102. The second partition 42 is disposed between the main housing 1 and the control housing 30, separating the second cooling zone 103 from the confluence zone 102. The first and second partitions 41 and 42 axially divide the space between the main housing 1 and the core housing 20 into the first cooling zone 101, the confluence zone 102, and the second cooling zone 103, effectively preventing cross-flow of cooling airflow. This ensures that the two cooling airflows entering the main housing 1 are independent and do not mix with the heated confluence airflow in the confluence zone 102, guaranteeing the purity and effectiveness of the cooling airflow.

[0068] Specifically, the first partition plate 41 and the second partition plate 42 are partition plates fixed in the main shell 1, which precisely divide different functional areas by the partition plates, so as to ensure that the motor 21 and the control assembly 3 are respectively in independent cooling environments for efficient heat dissipation, improve the performance of the entire heat dissipation system, and further ensure the stable operation of the high-pressure cleaning machine and reduce the probability of failure caused by heat problems.

[0069] It can be understood that the first partition plate 41 and the second partition plate 42 can also be arranged on the core shell 20; or the first partition plate 41 and the second partition plate 42 can be arranged on the core shell 20 and the control shell 30 respectively.

[0070] In some embodiments, as shown in Figure 4 、 Figure 7 , the motor 21 includes a stator 211 and a rotor 212, the rotor 212 is located outside the stator 211, the center of the rotor 212 is provided with an output shaft 210, the output shaft 210 is connected with the pump body 10, and the fan 22 is formed on the rotor 212. Wherein, the output shaft 210, the rotor 212 and the fan 22 rotate synchronously, and the output shaft 210 is the central rotating shaft of the motor 21. Wherein, the fan 22 is formed on the outer rotor of the motor, forming a centrifugal fan, so as to shorten the size of the core assembly 2 in the axial direction and simplify the structure.

[0071] As shown in Figure 2 、 Figure 7 、 Figure 8 , the control assembly 3 includes a control board 31 and a radiator 32 accommodated in the control shell 30, the radiator 32 is located between the control board 31 and the fan 22, and a ventilation gap 302 is arranged between a part of the outer edge of the control board 31 and the control shell 30, the ventilation gap 302 is located in the second air duct 12. Wherein, in the control shell 30, the control board 31 and the radiator 32 are arranged in the axial direction of the motor 21 and in the direction away from the motor 21 in sequence, and the ventilation gap 302 is arranged between the two side edges of the control board 31 in the axial direction of the motor 21 and the inner side wall of the control shell 30, so that the airflow cools the radiator 32 after passing through the control board 31, forming the second air duct 12.

[0072] As shown in Figure 2 、 Figure 9 、 Figure 10 、 Figure 11As shown, the main machine shell 1 comprises a first casing 111 and a second casing 112 which are connected together along a first direction, and the second casing 112 is provided with a ventilation structure away from the side of the first casing 111, the ventilation structure comprises a shielding part 104 for being isolated from the outside along the first direction and a ventilation port 105 for being communicated with the outside. The ventilation port 105 comprises a first ventilation port 1001, a second ventilation port 1002 and a third ventilation port 1003 which are arranged along a second direction intersecting the first direction. For example, the first direction is the up-down direction, and the second direction is the lateral direction. The first casing 111 and the second casing 112 are connected together along the up-down direction, and the ventilation port 105 of the second casing 112 located at the lower side is provided with the shielding part 104 along the up-down direction, so as to prevent liquid from splashing into the main machine shell 1 when the cleaning machine 100 is spraying.

[0073] The first air duct 11 is in fluid communication with the first ventilation port 1001 and the second ventilation port 1002 respectively, and the second air duct 12 is in fluid communication with the third ventilation port 1003 and the second ventilation port 1002 respectively.

[0074] The cooling process of the cleaning machine 100 is as follows: the fan 22 is started, the motor cooling air flow formed enters the main machine shell 1 from the first ventilation port 1001, then enters the machine core shell 20 from the first air flow port 201 to cool the motor 21, then flows out from the common air flow port 202, and finally flows out from the second ventilation port 1002 on the main machine shell 1.

[0075] At the same time, the control assembly cooling air flow formed enters the main machine shell 1 from the third ventilation port 1003 on the main machine shell 1, then enters the control assembly 3 from the second air flow port 301 on the control machine shell 30 to cool the elements on the back of the control board 31, then flows to the radiator 32 through the ventilation gap 302 between the two side edges of the control board 31 and the control machine shell 30, carries away the heat on the radiator 32, and converges with the motor cooling air flow at the outer periphery of the fan 22, then flows out from the common air flow port 202, and finally flows out from the second ventilation port 1002 on the main machine shell 1.

[0076] In this way, two independent cooling air flows formed after the centrifugal fan is started can simultaneously cool the motor 21 and the control assembly 3. At the same time, two independent cooling air ducts, i.e. the first air duct 11 and the second air duct 12, are formed in the main machine shell 1, and the two cooling air ducts have different air inlets and the same air outlet. Of course, without limiting the direction of the air flow in the cooling air duct, it can also be one air inlet and two different air outlets.

[0077] The other embodiments of the present application also provide an electric tool, which can be referred to Figures 1 to 11The electric tool comprises a main housing 1, a functional part, a core assembly 2 and a control assembly 3. The functional part is mounted on the main housing 1. The core assembly 2 is mounted in the main housing 1, and the core assembly 2 comprises a motor 21 for driving the functional part to operate and a fan 22 for forming air flow for cooling. The control assembly 3 is mounted in the main housing 1 and is used for controlling the motor 21 to operate.

[0078] The fan 22 is arranged between the motor 21 and the control assembly 3. The main housing 1 is provided with a first cooling area 101, a confluence area 102 and a second cooling area 103. The confluence area 102 is located between the first cooling area 101 and the second cooling area 103. The first cooling area 101 and the confluence area 102 are communicated through a first air duct 11. The second cooling area 103 and the confluence area 102 are communicated through a second air duct 12. The first air duct 11 passes through the motor 21, and the second air duct 12 passes through the control assembly 3. When the fan 22 rotates, the air in the first air duct 11 and the second air duct 12 flows simultaneously to cool the motor 21 and the control assembly 3.

[0079] It should be noted that, in the embodiments of the present application, the electric tool is a cleaning type electric tool (such as a cleaning machine 100), and the corresponding functional part is a pump body 10.

[0080] It can be understood that, in other embodiments, when the electric tool is a drilling type electric tool (such as an electric drill or an impact drill), the gear box is a key functional part. Through the combination of different gears, the conversion of motor speed and torque can be realized to meet the drilling requirements under different materials and working conditions. Alternatively, when the electric tool is a polishing or cutting type electric tool (such as an angle grinder or an electric saw), the cutting blade or polishing disc and its driving device serve as the functional part.

[0081] The electric tool of the embodiments of the present application utilizes one fan 22 to form two independent cooling air flows to cool the motor 21 and the control assembly 3, respectively, effectively avoiding the mixing of heat in the cooling process, improving the cooling efficiency, solving the cooling defects of the existing full air cooling mode, and effectively improving the heat dissipation performance of the cleaning machine without increasing excessive cost and complex structure compared with the cooling mode combining air cooling and water cooling.

[0082] In some embodiments, the core assembly 2 comprises a core housing 20 for accommodating the motor 21 and the fan 22, and the control assembly 3 comprises a control housing 30 connected with the core housing 20.

[0083] The machine core shell 20 comprises a first air flow port 201, the control machine shell 30 comprises a second air flow port 301, and the machine core shell 20 and / or the control machine shell 30 comprises a shared air flow port 202. The first air flow port 201 and the shared air flow port 202 are located in the first air duct 11, and the second air flow port 301 and the shared air flow port 202 are located in the second air duct 12.

[0084] The first partition 41 is located between the first cooling area 101 and the confluence area 102, and the second partition 42 is located between the second cooling area 103 and the confluence area 102.

[0085] It should be noted that the other configurations and principles of the electric tool regarding the heat dissipation part are consistent with the cleaning machine 100, and will not be described in detail here.

[0086] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered as falling within the scope of the present application.

[0087] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of the present application (including claims); the description of the specification is only for clarity, those skilled in the art should consider the specification as a whole, under the idea of the present application, the above embodiments or technical features in different embodiments can be properly combined, and there are many other changes of the different aspects of the embodiments of the present application as described above, in order to be brief, they are not provided in details.

[0088] The embodiments of the present application are intended to cover all such alternatives, modifications and variations as falling within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made without departing from the spirit and principle of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A cleaning machine characterized by, The application relates to a main machine shell, a pump body installed in the main machine shell, a core assembly installed in the main machine shell, the core assembly comprising a motor and a fan, the motor being used for driving the pump body to operate, a control assembly installed in the main machine shell and used for controlling the motor to operate, wherein the fan is arranged between the motor and the control assembly, the main machine shell is provided with a first air duct and a second air duct, the first air duct passes through the motor, the second air duct passes through the control assembly, and the fan drives the gas in the first air duct and the second air duct to flow simultaneously when the fan rotates, so as to cool the motor and the control assembly. The main machine shell is provided with a first cooling area, a confluence area and a second cooling area, the motor is at least partially located in the first cooling area, the control assembly is at least partially located in the second cooling area, and the fan is at least partially located in the confluence area, the confluence area being located between the first cooling area and the second cooling area. The first cooling area and the confluence area are communicated through the first air duct, and the second cooling area and the confluence area are communicated through the second air duct. The fan is a centrifugal fan, the fan drives the gas in the first cooling area to flow into the confluence area through the first air duct and flow out of the confluence area outwardly, and simultaneously drives the gas in the second cooling area to flow into the confluence area through the second air duct and flow out of the confluence area outwardly. The core assembly comprises a core shell for containing the motor and the fan, and the control assembly comprises a control shell, the control shell being connected with the core shell. The core shell comprises a first air flow port, the control shell comprises a second air flow port, a shared air flow port is arranged between the first air flow port and the second air flow port, and the shared air flow port is arranged on the core shell and / or the control shell; the first air flow port and the shared air flow port are located in the first air duct, and the second air flow port and the shared air flow port are located in the second air duct.

2. The cleaning machine of claim 1, wherein, The first air flow port is arranged on a side of the core shell away from the control shell, the second air flow port is arranged on a side of the control shell away from the core shell, and the shared air flow port is arranged around the fan. The cleaning machine further comprises a first partition plate arranged between the main machine shell and the core shell and used for separating the first cooling area from the confluence area, and a second partition plate arranged between the main machine shell and the control shell and used for separating the second cooling area from the confluence area.

3. The cleaning machine of claim 2, wherein, The motor comprises a stator and a rotor, the rotor is located outside the stator, the center of the rotor is provided with an output shaft, the output shaft is connected with the pump body, and the fan is formed on the rotor.

4. The cleaning machine of claim 2, wherein, The control assembly comprises a control board and a radiator contained in the control shell, the radiator is located between the control board and the fan, at least part of the outer edge of the control board is provided with a ventilation gap with the control shell, and the ventilation gap is located in the second air duct. ​ 5. The cleaning machine of claim 4, wherein, ​ 6. The cleaning machine of claim 4, wherein, ​ ​ ​ 7. The cleaning machine of claim 4, wherein, ​ ​ 8. The cleaning machine of claim 1, wherein, The main shell comprises a first shell and a second shell connected in a first direction, the second shell is provided with a ventilation structure away from one side of the first shell, the ventilation structure comprises a shielding part for isolation from the outside in the first direction and a ventilation port for communication with the outside; the ventilation port comprises a first ventilation port, a second ventilation port and a second ventilation port arranged in a second direction, the second direction intersects the first direction; the first air duct is in fluid communication with the first ventilation port and the second ventilation port respectively, and the second air duct is in fluid communication with the second ventilation port and the second ventilation port respectively.

9. A power tool characterized by comprising: Comprise: Main shell; Functional parts, installed in the main shell; Movement assembly, installed in the main shell, the movement assembly comprises a motor and a fan, the motor is used to drive the functional parts to run; Control assembly, installed in the main shell, used to control the motor to run; Wherein, the fan is arranged between the motor and the control assembly, the main shell is provided with a first cooling area, a confluence area and a second cooling area, the confluence area is located between the first cooling area and the second cooling area; The first cooling area and the confluence area are communicated through the first air duct, and the second cooling area and the confluence area are communicated through the second air duct, the first air duct passes through the motor, the second air duct passes through the control assembly, and the fan rotates to drive the gas in the first air duct and the second air duct to flow at the same time to cool the motor and the control assembly.

10. The power tool of claim 9, wherein, The movement assembly comprises a movement shell for accommodating the motor and the fan, and the control assembly comprises a control shell, and the control shell is connected with the movement shell; The movement shell comprises a first air flow port, the control shell comprises a second air flow port, and the movement shell and / or the control shell comprises a common air flow port; the first air flow port and the common air flow port are located in the first air duct, and the second air flow port and the common air flow port are located in the second air duct; The main shell and the movement shell are provided with a first partition plate and a second partition plate, the first partition plate is located between the first cooling area and the confluence area, and the second partition plate is located between the second cooling area and the confluence area.

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