Surface cleaning device

Abstract

The present disclosure relates to a surface cleaning device, comprising a body, a clean water tank, a dirty water tank, a suction drive mechanism, and a handle assembly, wherein the clean water tank, the dirty water tank, and the suction drive mechanism are mounted on the body, the suction drive mechanism is provided with an air inlet and an air outlet, the handle assembly is provided with an exhaust port connected to the air outlet, an air flow duct connecting the air inlet and the air outlet is formed in the suction drive mechanism, the air flow introduced by the air inlet has a certain amount of heat after passing through the air flow duct and is discharged through the exhaust port, and an air duct switching mechanism is provided at the air outlet to selectively connect to or close the exhaust port. The present disclosure can utilize the operation of the suction drive mechanism itself to achieve rapid drying of the surface, and can utilize different air flows for drying through the air duct switching mechanism provided at the air outlet of the suction drive mechanism, thereby improving the user experience.

Description

Technical Field

[0001] The present disclosure relates to the technical field of small household appliances, and in particular to a surface cleaning device. Background Art

[0002] Existing household fabric cleaning machines lack a drying function. After using the spray and vacuum functions, the surface of the cleaned item is still wet, requiring the surface to dry naturally or require the use of other drying equipment. This long waiting time and equipment replacement time result in a poor user experience.

[0003] Patent application number CN212913099U discloses a floor scrubber robot and its floor drying mechanism. The floor drying mechanism includes a heating mechanism and a drying mechanism. Heat generated by the heating mechanism is directed to the drying mechanism to dry the floor. This requires a dedicated heating mechanism to generate hot air for drying, which is costly. Furthermore, excessively high temperatures can damage the surface. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of the present disclosure is to provide a surface cleaning device that can make full use of the heat generated by the suction drive mechanism itself during operation to heat the external cold air flow and then discharge it to dry / dry the surface to be cleaned; and can use different airflows to dry the surface, meet the different drying needs of users, and improve the user experience.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a surface cleaning device, including a body, a clean water tank, a dirty water tank, a suction drive mechanism and a handle assembly, the clean water tank, the dirty water tank and the suction drive mechanism are installed on the body, the suction drive mechanism is provided with an air inlet and an air outlet, the handle assembly is provided with an exhaust port connected to the air outlet, an air flow duct connecting the air inlet and the air outlet is formed in the suction drive mechanism, the air flow introduced by the air inlet has a certain amount of heat after passing through the air flow duct and is discharged through the exhaust port, and the air outlet is provided with an air duct switching mechanism to selectively connect or close the exhaust port.

[0006] The surface cleaning device provided by the embodiment of the present disclosure can fully utilize the heat generated by the suction driving mechanism itself during operation to heat the external cold air flow and then discharge it, without adding additional air flow generating mechanism and heating device, so as to dry / dry the surface to be cleaned without causing damage to the surface to be cleaned; at the same time, the embodiment of the present disclosure provides an air duct switching mechanism at the air outlet to selectively connect or close the air outlet and the exhaust outlet, so that different airflows can be discharged for surface drying according to actual needs, thereby realizing rapid switching of different drying functions, or switching between drying or cleaning functions, thereby improving the functional diversity of the surface cleaning device and thus improving the user experience.

[0007] In some embodiments, the air inlet includes a first air inlet and a second air inlet, and the air outlet includes a first air outlet and a second air outlet. A first air flow duct is formed between the first air inlet and the first air outlet, and a second air flow duct is formed between the second air inlet and the second air outlet. By setting different air flow ducts connecting different air inlets and air outlets, different surfaces to be cleaned can be dried by using hot air of different temperatures heated in different air flow ducts, so as to adapt to different drying scenarios and realize the diversification of drying functions.

[0008] In some embodiments, the suction drive mechanism includes a fan blade and a power component for driving the fan blade, wherein the fan blade is located in the path of the first air flow duct, so that the air flow introduced from the first air inlet has a certain amount of heat after passing through the fan blade and is discharged from the first air outlet;

[0009] The power component is positioned within the path of the second airflow duct, so that the airflow introduced from the second air inlet, after passing through the power component, acquires a certain amount of heat and is discharged through the second air outlet. The heat generated by the operation of different components within the suction drive mechanism can be used to heat the cold air introduced from different air inlets into different airflow ducts, which is then discharged through different air outlets. This allows for the independent discharge of hot air at different temperatures to meet different drying requirements. The hot air in each airflow duct does not affect each other, ensuring reliable operation of the suction drive mechanism.

[0010] In some embodiments, the air volume discharged from the first air outlet is greater than the air volume discharged from the second air outlet, and the temperature of the air discharged from the second air outlet is higher than the temperature of the air discharged from the first air outlet. Different air volumes and temperatures of hot air discharged from different air outlets can be used to perform targeted drying on the surface to be cleaned, thereby improving the drying effect. The hot air discharged from the first air outlet has a large volume and a low temperature, and can be used in scenarios that require a large air volume and cannot be dried at high temperatures (such as natural air drying); the hot air discharged from the second air outlet has a smaller volume than that discharged from the first air outlet, but a higher temperature, and can be used in scenarios that require quick drying of the surface to be cleaned, or can be used in scenarios that can withstand high temperatures, etc.

[0011] In some embodiments, the air duct switching mechanism is an air duct reversing valve installed at or connected to the air outlet. The air duct reversing valve includes a reversing inlet and a first reversing outlet and a second reversing outlet respectively connected to the reversing inlet. The air outlet is connected to the reversing inlet, the first reversing outlet is connected to the exhaust port, and the second reversing outlet is connected to the air outlet provided on the body. The air duct reversing valve can switch the conduction state between the reversing inlet and the first reversing outlet and between the reversing inlet and the second reversing outlet. By installing the air duct reversing valve at or connected to the air outlet, rapid reversal of airflow direction can be achieved, and disassembly and assembly are convenient and cost-effective.

[0012] In some embodiments, the first air outlet and the second air outlet are arranged on different sides of the suction drive mechanism, the air duct reversing valve is arranged at the first air outlet or the second air outlet, and the reversing inlet of the air duct reversing valve is connected to the first air outlet or the second air outlet; or

[0013] The first air outlet is connected to the reversing inlet of the air duct reversing valve via a first pipe, and the second air outlet is connected to the reversing inlet of the air duct reversing valve via a second pipe. This facilitates the airflows of different temperatures to flow out from different sides separately or to mix after flowing out, thereby preventing the cold air entering from the first air inlet and the cooling air entering from the second air inlet from mixing within the housing, thereby causing convection and affecting the suction drive mechanism, thereby preventing increased noise.

[0014] In some embodiments, the first air outlet and the second air outlet are arranged on the same side of the suction drive mechanism, and the first air outlet and the second air outlet are both connected to the reversing inlet of the same air duct reversing valve. Only one air duct reversing valve is required to mix the hot air discharged from different air outlets, and the air ducts can be switched according to the applicable scenario, thereby reducing costs.

[0015] In some embodiments, a partition is provided within the suction drive mechanism to divide the airflow duct used for drying into the first airflow duct and the second airflow duct. Separating the two airflow ducts by the partition effectively prevents convection in the different airflow ducts from affecting the suction drive mechanism, and facilitates the formation of the airflow ducts.

[0016] In some embodiments, the first air inlet is provided at the top of the suction drive mechanism, the second air inlet is provided at the bottom of the suction drive mechanism, and the first air outlet and the second air outlet are provided on the side wall of the suction drive mechanism;

[0017] The first airflow duct and the second airflow duct are annular airflow ducts arranged around the circumference of the suction drive mechanism and are respectively located on the upper and lower sides of the suction drive mechanism. A large amount of cold air for drying can be introduced from the top of the suction mechanism, and heat-dissipating air can be introduced from the bottom of the suction mechanism. After the different airflows are heated by the fan blades and power components located in the paths of the first airflow duct and the second airflow duct, they are discharged from the side walls of the suction drive mechanism. The airflow ducts are independent of each other and have clear flow directions, ensuring that the heated hot air is quickly discharged for drying while avoiding convection between different airflows and the upper and lower winds that may affect the suction mechanism, thereby improving the reliability of the suction drive mechanism.

[0018] In some embodiments, a heating element is provided between the air outlet and the exhaust port. The heating element is capable of reheating the heat-carrying airflow discharged from the air outlet and discharging it through the exhaust port. The heating element can quickly heat the different airflows discharged from the air outlet to a desired temperature, thereby improving drying efficiency and drying effect.

[0019] In some embodiments, the heating component is disposed in the body or the handle assembly, and the heating component can be arranged according to actual needs to meet different user requirements. For example, when the heating component is arranged in the handle assembly, the overall size of the body can be reduced, which is convenient for users to carry and can be applied to different scenarios.

[0020] In some embodiments, the handle assembly is provided with a suction port connected to the sewage tank, and one of the first air inlet and the second air inlet is connected to the suction port after passing through the sewage tank. The suction drive mechanism can be fully utilized to simultaneously achieve surface cleaning and drying functions.

[0021] In some embodiments, the body is connected to the handle assembly via a connecting hose, the suction port and the exhaust port are provided at the cleaning head of the handle assembly, and an air inlet duct for connecting the suction port and the first air inlet or the second air inlet, and an air outlet duct for connecting the air outlet and the exhaust port are provided side by side in the connecting hose;

[0022] The handle assembly is also equipped with a water spout near the cleaning head. A fresh water line connecting the spout and the fresh water tank is located within the handle assembly and the connecting hose. The connecting hose facilitates the extension and retraction of the handle assembly relative to the handheld portion, making it easier for users to clean while holding the handle, enhancing the user experience. Furthermore, the handle assembly integrates the functions of suction, drying, and cleaning, improving product performance.

[0023] In some embodiments, the handle assembly includes a first handle assembly and a second handle assembly, and the first handle assembly and the second handle assembly are respectively connected to the body through a connecting hose;

[0024] The cleaning head of the first handle assembly is provided with a suction port and a water spray port. A first connecting hose connecting the first handle assembly to the body is provided with an air inlet duct for connecting the suction port and the first air inlet or the second air inlet, and a clean water pipeline for connecting the water spray port and the clean water tank.

[0025] A second connecting hose connecting the second handle assembly to the body is provided with an air duct for communicating with the exhaust port and the air outlet. By providing different handle assemblies and providing corresponding ducts within the corresponding handle assemblies, the drying and surface cleaning functions can be realized respectively. This can be achieved by simply adding a second handle assembly to the existing first handle assembly. This provides a reasonable structure, ease of manufacture, and effective cost reduction. Furthermore, it allows users to easily utilize different handle assemblies to achieve different functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the embodiments of the invention. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive of the embodiments of the present apparatus or method.

[0027] Figure 1 This is a schematic diagram of the appearance and structure of a surface cleaning device according to an embodiment of the present disclosure;

[0028] Figure 2 is a front cross-sectional view of a surface cleaning device according to an embodiment of the present disclosure (including airflow direction);

[0029] Figure 3 A partial cross-sectional view of a surface cleaning device as viewed from the side;

[0030] FIG4( a ) is a schematic diagram of a first coordination between the suction drive mechanism and the air duct switching mechanism according to an embodiment of the present disclosure;

[0031] FIG4( b ) is a schematic diagram of a first coordination between the suction drive mechanism and the air duct switching mechanism according to an embodiment of the present disclosure;

[0032] FIG4( c ) is a schematic diagram of a first coordination between the suction drive mechanism and the air duct switching mechanism according to an embodiment of the present disclosure;

[0033] FIG4( d ) is a schematic diagram of a first coordination between the suction drive mechanism and the air duct switching mechanism according to an embodiment of the present disclosure;

[0034] FIG4( e ) is a schematic diagram of a first coordination between the suction drive mechanism and the air duct switching mechanism according to an embodiment of the present disclosure;

[0035] Figure 5 Schematic diagram of the three-dimensional assembly structure of the suction drive mechanism and the air duct switching mechanism of the embodiment of the present disclosure;

[0036] Figure 6 This is a schematic diagram of the exploded structure of the suction drive mechanism according to an embodiment of the present disclosure;

[0037] Figure 7 Schematic diagram of the structure of the air duct switching mechanism according to an embodiment of the present disclosure;

[0038] Figure 8 is a front cross-sectional view of another surface cleaning device according to an embodiment of the present disclosure;

[0039] Figure 9 is a side view of a surface cleaning device according to an embodiment of the present disclosure;

[0040] Figure 10 for Figure 9 Cross-sectional view along the AA axis;

[0041] Figure 11 A partial cross-sectional view of the three-dimensional structure of the surface cleaning device according to an embodiment of the present disclosure;

[0042] Figure 12 A schematic structural diagram of a sewage tank of a surface cleaning device according to an embodiment of the present disclosure (including airflow direction);

[0043] Figure 13 A partial cross-sectional view of the three-dimensional structure of the surface cleaning device according to an embodiment of the present disclosure from another direction;

[0044] Figure 14 for Figure 9 Cross-sectional view along the BB direction;

[0045] Figure 15 A front cross-sectional view of the surface cleaning device according to an embodiment of the present disclosure from another direction;

[0046] Figure 16 for Figure 15 Enlarged cross-sectional view of the middle handle assembly.

[0047] Reference numerals:

[0048] 1-body, 11-air outlet; 2-clean water tank; 3-sewage tank, 31-first connection port, 32-second connection port, 33-baffle; 4-suction drive mechanism, 411-first air inlet, 412-second air inlet, 421-first air outlet, 422-second air outlet, 431-first air duct, 432-second air duct, 44-fan blades, 45-power component, 46-first partition, 461-through hole, 47-housing, 471 -Installation cover, 472-Installation cover upper cover, 473-Installation cover lower cover, 48-Second partition; 5-Handle assembly, 51-Exhaust port, 52-Suction port, 53-Water spray port; 6-Air duct switching mechanism, 61-Reversing inlet, 62-First reversing outlet, 63-Second reversing outlet, 64-Adjustment knob, 65-Snap fastener; 71-First pipeline, 72-Second pipeline; 8-Heating component, 81-Heating inlet, 82-Heating outlet; 9-Connecting hose;

[0049] 20-dispersed air duct; 30-air inlet duct, 301-first air inlet pipe, 302-second air inlet pipe, 303-third air inlet pipe; 40-outlet air duct; 50-clean water pipeline. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure.

[0051] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0052] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components.

[0053] Figures 1 to 16 FIG. 1 shows a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure. Figures 1 to 16 As shown, an embodiment of the present disclosure provides a surface cleaning device, including a body 1, a clean water tank 2, a sewage tank 3, a suction drive mechanism 4 and a handle assembly 5, the clean water tank 2, the sewage tank 3 and the suction drive mechanism 4 are installed on the body 1, the suction drive mechanism 4 is provided with an air inlet and an air outlet, the handle assembly 5 is provided with an exhaust port 51 connected to the air outlet, an air flow duct connecting the air inlet and the air outlet is formed in the suction drive mechanism 4, the air flow introduced by the air inlet has a certain amount of heat after passing through the air flow duct and is discharged through the exhaust port 51, and an air duct switching mechanism 6 is provided at the air outlet to selectively connect or close the exhaust port 51.

[0054] The surface cleaning device provided in the embodiment of the present disclosure can fully utilize the heat generated by the suction driving mechanism 4 itself during operation to heat the external cold air flow and then discharge it after heating, without adding additional air flow generating mechanism and heating device, so as to dry / dry the surface to be cleaned (such as fabric surface, floor, wall, etc.) without causing damage to the surface to be cleaned; at the same time, in the embodiment of the present disclosure, an air duct switching mechanism 6 is provided at the air outlet to selectively connect or close the air outlet with the exhaust port 51, so that different air flows can be discharged for surface drying according to actual needs, thereby realizing rapid switching of different drying functions, or switching between drying or cleaning functions, thereby improving the functional diversity of the surface cleaning device and thus improving the user experience.

[0055] It is understood that the surface can be a surface cleaned by the suction drive mechanism 4 or a surface to be cleaned. When the surface cleaning device is a floor scrubber, the surface can be wet cleaned first, and then the cleaned surface can be dried to achieve rapid drying of the surface. When the surface cleaning device is a vacuum cleaner, the surface to be cleaned can be dried first (wet dirt easily adheres to the surface and is not easily sucked into the vacuum cleaner), and then the dry dirt on the surface can be sucked into the vacuum cleaner for cleaning, thereby improving the vacuuming effect.

[0056] In some embodiments, as Figure 3 、 Figure 4(a) to Figure 4(e)As shown, the air inlet includes a first air inlet 411 and a second air inlet 412, and the air outlet includes a first air outlet 421 and a second air outlet 422. A first air flow duct 431 is formed between the first air inlet 411 and the first air outlet 421, and a second air flow duct 432 is formed between the second air inlet 412 and the second air outlet 422.

[0057] In this embodiment, by setting different air flow ducts in the suction drive mechanism 4, the different heat generated by different components when the suction drive mechanism 4 is working can be utilized to heat the cold air passing through different air flow ducts, and the cold air can be heated to different temperatures to meet different drying needs.

[0058] In some embodiments, as Figure 4(a) to Figure 4(e) ,as well as Figure 6 As shown, the suction drive mechanism 4 includes a fan blade 44 and a power component 45 for driving the fan blade 44. The fan blade 44 is located in the path of the first air flow duct 431, so that the air flow introduced from the first air inlet 411 has a certain amount of heat after passing through the fan blade 44 and is discharged from the first air outlet 421.

[0059] The power component 45 is located in the path of the second air flow duct 432 so that the air flow introduced from the second air inlet 412 has a certain amount of heat after passing through the power component 45 and is discharged from the second air outlet 422 .

[0060] In this embodiment, the first heat generated by the operation of the fan blades 44 can be used to heat the cold air introduced into the first air duct 431 from the first air inlet 411, and the heated airflow with the first temperature can be discharged from the first air outlet 421; at the same time, the second heat generated by the operation of the power component 45 can be used to heat the cold air introduced into the second air duct 432 from the second air inlet 412, and the heated airflow with the second temperature can be discharged from the second air outlet 422, so as to provide hot airflows of different temperatures for surface drying according to the operation of different components in the suction drive mechanism 4.

[0061] In some embodiments, the volume of air discharged from the first air outlet 421 is greater than the volume of air discharged from the second air outlet 422 , and the temperature of air discharged from the second air outlet 422 is higher than the temperature of air discharged from the first air outlet 421 .

[0062] When the fan blades 44 are working, they can heat the cold air to 30-60°C, and when the fan blades 44 are working, they can introduce a large amount of cold air from the outside into the first air duct 431 through the first air inlet 411. The cold air in the first air duct 431 has a lower temperature after heating and a larger air volume, which is suitable for scenes that require a large air volume and cannot be dried by high temperature (such as natural air drying); when the power component 45 is working, it can heat the cold air to 60-80°C, and this part of the air is mainly heat dissipation air. Therefore, the cold air in the second air duct 432 has a higher temperature after heating and a smaller air volume, which is suitable for scenes where the surface to be cleaned requires quick drying or scenes where the surface to be cleaned can withstand high temperatures.

[0063] It can be understood that when the fan blades 44 are working to introduce cold air, they can take away some of the heat. Therefore, the temperature of the wind generated by the fan blades 44 is relatively low. When the power component 45 drives the fan blades 44 to work, the rotor rotates quickly, and the resistance in the circuit is concentrated in the position close to the power component 45 in the suction drive mechanism 4, resulting in the temperature of the position close to the power component 45 in the suction drive mechanism 4 being higher than the temperature of the position close to the fan blades 44. Therefore, the temperature of the hot air in the first airflow duct 431 is higher, and the amount of air discharged from the fan blades 44 is large, while the amount of heat dissipation air from the power component 45 is not large.

[0064] In some embodiments, as Figure 4(a) to Figure 4(e) as well as Figure 6 As shown, a first partition 46 is provided in the suction drive mechanism 4 to divide the airflow duct into a first airflow duct 431 and a second airflow duct 432 .

[0065] The airflow duct in the suction drive mechanism 4 is divided into an independent first airflow duct 431 and a second airflow duct 432 by the first partition plate 46 , which facilitates the formation of the duct and the independent discharge of airflows with different temperatures.

[0066] In a specific implementation, the first airflow duct 431 and the second airflow duct 432 may also be formed by providing pipelines and the like.

[0067] In some embodiments, the first air inlet 411 is provided at the top of the suction drive mechanism 4 , the second air inlet 412 is provided at the bottom of the suction drive mechanism 4 , and the first air outlet 421 and the second air outlet 422 are provided on the side wall of the suction drive mechanism 4 ;

[0068] The first airflow duct 431 and the second airflow duct 432 are annular airflow ducts arranged around the circumference of the suction drive mechanism 4 , and are respectively located at the upper and lower sides of the suction drive mechanism 4 .

[0069] like Figure 4(a) to Figure 4(e) as well as Figure 6As shown, the suction drive mechanism 4 also includes a housing 47, with the fan blades 44 and the power component 45 connected vertically and integrally installed in the housing 47. There is a gap between the fan blades 44 and the power component 45 and the side walls of the housing 47 to form an annular air duct. The horizontal first partition 46 divides the annular air duct into a first air flow duct 431 and a second air flow duct 432 located on the upper and lower sides of the housing 47. In this embodiment, by providing a first air inlet 411 and a second air inlet 412 at the top and bottom of the suction drive mechanism 4, respectively, and providing a first air outlet 421 and a second air outlet 422 on the side walls of the suction drive mechanism 4, the first air flow duct 431 and the second air flow duct 432 are formed by the partition provided in the housing 47, which facilitates the independent discharge of the top air intake and the bottom air intake, facilitates the control of different airflows, and meets the different needs of users. In addition, in this embodiment, the provision of two independent air flow ducts can prevent the cooling air entering from the top and the bottom from convecting in the suction drive mechanism 4, thereby affecting the suction drive mechanism 4 and avoiding increased noise.

[0070] In other embodiments, the first air inlet 411 and the second air inlet 412 may be disposed on the left and right sides of the housing 47, or one of the air inlets may be disposed on the top of the housing 47 and the other on the sidewall of the housing 47. The specific placement of the air inlets is determined based on actual needs and is not specifically limited in this disclosure. In this embodiment, the first air inlet 411 and the second air inlet 412 are disposed on the top and bottom of the housing 47, and the air outlet is disposed on the sidewall of the housing 47. This facilitates the formation of different independent air ducts, provides clear airflow directions, and enables reliable control of different airflows.

[0071] In some embodiments, as Figure 4(a) to Figure 4(e) ,as well as Figures 5 to 7 As shown, the air duct switching mechanism 6 is an air duct reversing valve installed on the air outlet or connected to the air outlet, and the air duct reversing valve includes a reversing inlet 61 and a first reversing outlet 62 and a second reversing outlet 63 respectively connected to the reversing inlet 61. The air outlet is connected to the reversing inlet 61, the first reversing outlet 62 is connected to the exhaust port 51, and the second reversing outlet 63 is connected to the air dispersion port 11 provided on the body 1. The air duct reversing valve can switch the conduction state between the reversing inlet 61 and the first reversing outlet 62 and the reversing inlet 61 and the second reversing outlet 63.

[0072] Specifically, when the reversing inlet 61 and the first reversing outlet 62 are connected, the airflow with a certain temperature discharged from the air outlet 42 can be discharged to the surface through the air duct connecting the air outlet and the exhaust port 51 to dry the surface; when the reversing inlet 61 and the second reversing outlet 63 are connected, the airflow with a certain temperature discharged from the air outlet 42 can be discharged to the outside through the air dissipation port 11 provided on the body 1 to dissipate heat and realize switching between different functions.

[0073] In this embodiment, by setting up an air duct reversing valve, the connection state between the air outlet and the exhaust port 51 set on the handle assembly 5 can be quickly adjusted, so that the corresponding heated airflow can be discharged as needed, realizing rapid switching of different functions, and improving the functional diversity of the product. The air duct reversing valve can realize rapid and convenient switching of the airflow direction, and the structure is reasonable and compact.

[0074] like Figure 3 As shown, the air dispersing port 11 is provided at the bottom of the housing 1, and the air dispersing port 11 is provided correspondingly to the second air inlet 412, so as to quickly introduce external cold air into the suction drive mechanism 4 and heat this cold air using the heat generated by the operation of the power component 45, thereby achieving rapid heat dissipation of the power component 45. At the same time, the heated airflow (hot air) at the second temperature can be discharged out of the suction drive mechanism 4 through the second air outlet 422, where it can be used for surface drying or directly discharged out of the housing 1 through the air dispersing duct 20 connecting the second air outlet 422 and the air dispersing port 11, thereby ensuring that the heat generated by the power component 45 is quickly dissipated and that the suction drive mechanism 4 operates reliably. The airflow (hot air) at the first temperature heated by the fan blades 44 is discharged out of the suction drive mechanism 4 through the first air outlet 421, and can also be discharged out of the housing 1 through the air dispersing duct 20 and the air dispersing port 11.

[0075] like Figure 6 As shown, the shell 47 includes a mounting cover 471 and a mounting cover upper cover 472 and a mounting cover lower cover 473 respectively arranged on the upper and lower sides of the mounting cover 471, the first air inlet 411 is opened in the mounting cover upper cover 472, the first air inlet 411 is opened in the mounting cover lower cover 473, and the second air inlet 412 is arranged opposite to the air dispersion outlet 11 opened at the bottom of the body 1, which is convenient for the installation of various components and the opening of the air inlet and outlet.

[0076] In some embodiments, as shown in Figures 4(a) and 4(b), the first air outlet 421 and the second air outlet 422 are arranged on different sides of the suction drive mechanism 4, the air duct reversing valve is arranged at the first air outlet 421 or the second air outlet 422, and the reversing inlet 61 of the air duct reversing valve is connected to the first air outlet 421 or the second air outlet 422.

[0077] Specifically, the different functions of the surface cleaning device can be switched by switching the air duct reversing valve installed at the same air outlet. For example, when surface drying is required, the reversing inlet 61 of the air duct reversing valve installed at any of the above-mentioned air outlets can be connected to the first reversing outlet 62, and the reversing inlet 61 and the second reversing outlet 63 can be disconnected. When surface cleaning is required, the reversing inlet 61 and the first reversing outlet 62 can be disconnected, and the reversing inlet 61 and the second reversing outlet 63 can be connected, thereby achieving different functions (such as whether drying is required and which part of the heated airflow is used for drying).

[0078] As shown in Figure 4(a), when the air duct reversing valve is set at the first air outlet 421, the direction of the heated airflow in the first airflow duct 431 can be switched. When it is necessary to use the airflow with the first temperature flowing out of the first airflow duct 431 for surface drying, the reversing inlet 61 and the first reversing outlet 62 can be connected, and the connection between the reversing inlet 61 and the second reversing outlet 63 can be cut off, so that the airflow with the first temperature flows out from the first reversing outlet 62 and is discharged to the surface to be cleaned through the exhaust port 51. When it is not necessary to use the airflow with the first temperature for surface drying, the reversing inlet 61 and the second reversing outlet 63 can be connected, and the connection between the reversing inlet 61 and the first reversing outlet 62 can be cut off, so that the airflow with the first temperature flows out from the second reversing outlet 63 to the outside of the suction drive mechanism 4 and is discharged to the outside of the machine body 1 through the air dispersion port 11. The airflow (heating air) at the second temperature, which is heated by the power component 45 and has a relatively small volume, can be directly discharged out of the suction drive mechanism 4 through the second air outlet 422, and then discharged out of the machine body 1 through the air dissipation outlet 11. This embodiment is mainly suitable for scenarios that require a large air volume and cannot be dried at high temperatures (such as natural air drying).

[0079] As shown in Figure 4(b), when the air duct reversing valve is set at the second air outlet 422, the direction of the heated airflow in the second air duct 432 can be switched. When it is necessary to use the airflow with the second temperature flowing out of the second air duct 432 for surface drying, the reversing inlet 61 and the first reversing outlet 62 can be connected, and the connection between the reversing inlet 61 and the second reversing outlet 63 can be cut off, so that the airflow with the second temperature flows out of the first reversing outlet 62 to the outside of the suction drive mechanism 4 and is discharged to the surface to be cleaned through the exhaust port 51. When it is not necessary to use the airflow with the second temperature for surface drying, the reversing inlet 61 and the second reversing outlet 63 can be connected, and the connection between the reversing inlet 61 and the first reversing outlet 62 can be cut off, so that the airflow with the second temperature flows out of the second reversing outlet 63 to the outside of the suction drive mechanism 4 and is discharged to the outside of the machine body 1 through the air outlet 11. The airflow at the first temperature in the first airflow duct 431 can be directly discharged to the outside of the suction drive mechanism 4 through the first air outlet 421, and then discharged to the outside of the machine body 1 through the air dispersion port 11. This embodiment is mainly suitable for scenes where the surface to be cleaned requires rapid drying or scenes where the surface to be cleaned can withstand high temperatures, thereby achieving rapid drying or being able to completely dry the surface to be cleaned.

[0080] It can be understood that in this embodiment, air duct reversing valves can be installed at the first air outlet 421 and the second air outlet 422 respectively to adjust the corresponding airflow direction when drying the surface, and use different airflows to dry the surface, thereby realizing diversified drying functions.

[0081] For example, when air duct reversing valves are installed at both the first air outlet 421 and the second air outlet 422, the switching of different drying functions can be achieved by switching the conduction states of different air duct reversing valves. When the first air outlet 421, the reversing inlet 61 of the first air duct reversing valve and the first reversing outlet 62 of the first air duct reversing valve are conducted, the conduction of the first air outlet 421, the reversing inlet 61 of the first air duct reversing valve and the second reversing outlet 63 of the first air duct reversing valve are cut off; and the second air outlet 422, the reversing inlet 61 of the second air duct reversing valve and the second reversing outlet 63 of the second air duct reversing valve are conducted, the second air outlet 422, the reversing inlet 61 of the second air duct reversing valve and the first reversing outlet 62 of the second air duct reversing valve are cut off, the surface can be dried by the airflow with the first temperature discharged from the first air flow duct 431, and the airflow with the second temperature in the second air flow duct 432 can be quickly discharged for heat dissipation. When the first air outlet 421, the reversing inlet 61 of the first air duct reversing valve and the second reversing outlet 63 of the first air duct reversing valve are connected, the connection between the first air outlet 421, the reversing inlet 61 of the first air duct reversing valve and the first reversing outlet 62 of the first air duct reversing valve is cut off; and the second air outlet 422, the reversing inlet 61 of the second air duct reversing valve and the first reversing outlet 62 of the second air duct reversing valve are connected, and the second air outlet 422, the reversing inlet 61 of the second air duct reversing valve and the second reversing outlet 63 of the second air duct reversing valve are connected and cut off, the surface can be dried by the airflow with the second temperature discharged from the second air flow duct 432, and the airflow with the first temperature in the first air flow duct 431 can be discharged outside the body 1 for heat dissipation, thereby realizing the switching of different drying functions.

[0082] In other embodiments, as shown in Figure 4(c), the first air outlet 421 and the second air outlet 422 are arranged on different sides of the suction drive mechanism 4, the first air outlet 421 is connected to the reversing inlet 61 of the air duct reversing valve through a first pipeline 71, and the second air outlet 422 is connected to the reversing inlet 61 of the air duct reversing valve through a second pipeline 72.

[0083] In this embodiment, the air flow with the first temperature and the air flow with the second temperature can be mixed, and then the mixed air flow can be discharged through the exhaust port by reversing the air duct reversing valve to provide more air volume and higher temperature for drying the surface to be cleaned, thereby further improving the drying efficiency and drying effect; or the mixed air flow can be discharged to the outside of the machine body 1 through the air dispersion port 11.

[0084] In other embodiments, as shown in Figures 4(d) and 4(e), the first air outlet 421 and the second air outlet 422 are located on the same side of the suction drive mechanism 4, and both are connected to the reversing inlet 61 of the same air duct reversing valve. In this embodiment, the airflows of the first and second temperatures can be mixed through the same air duct reversing valve without the need for connecting pipes. This arrangement is rational and compact, and the length of the entire drying airflow duct can be effectively shortened, thereby improving drying efficiency.

[0085] As shown in FIG4(d), the airflows having the first and second temperatures can be mixed within the suction drive mechanism 4 before entering the reversing inlet 61 of the air duct reversing valve. Specifically, a through hole 461 can be provided in the first partition plate 46 near the air outlet 42 to allow the airflows having the first and second temperatures to be mixed within the suction drive mechanism 4 before being discharged.

[0086] As shown in FIG4(e), the airflows having the first temperature and the second temperature can be mixed outside the suction drive mechanism 4. In a specific implementation, an air outlet can be provided on the housing 47, and a second partition plate 48 provided inside the air outlet can be used to separate the air outlet into a first air outlet 421 and a second air outlet 422. This allows the airflows having the first temperature and the second temperature to flow out of the first air outlet 421 and the second air outlet 422, respectively, and then be mixed outside the suction drive mechanism 4 before being introduced into the reversing inlet 61 of the air duct reversing valve.

[0087] In this embodiment, through the cooperation of the air duct conversion valve and the first air outlet 421 and the second air outlet 422, the airflow direction can be switched according to actual needs for surface drying or cleaning, and multiple airflow drying uses can be realized, thereby realizing the switching of multiple drying functions.

[0088] It should be noted that, as shown in Figure 4(d), if the airflows with the first temperature and the second temperature are mixed in the suction drive mechanism 4, since the air volume of the suction part of the fan blade 44 is large, and the heat dissipation air volume of the power component 45 is small, the internal mixing will disperse the heat dissipation air of the power component 45, affecting the discharge of the heat dissipation air of the power component 45, which is not conducive to heat dissipation. Therefore, in a specific implementation, the airflows with the first temperature and the second temperature are preferably mixed outside the suction drive mechanism 4. The mixed air can be used to improve the drying efficiency without affecting the heat dissipation of the power component 45, thereby improving the working performance of the surface cleaning device. At the same time, different airflows are mixed outside the suction drive mechanism 4, which can avoid the noise generated by convection of the airflow in the shell 47.

[0089] like Figure 5 and Figure 7As shown, the air duct switching mechanism 6 also includes an adjusting knob 64 for reversing the airflow. The air duct switching mechanism 6 is installed in the body 1, and the adjusting knob 64 passes through the shell of the body 1 and is located outside the body 1, making it convenient for users to adjust the direction of the airflow.

[0090] Furthermore, a plurality of clips 65 are provided on the outer periphery of the reversing inlet 61 of the air duct switching mechanism 6. After the reversing inlet 61 and the air outlet of the suction drive mechanism 4 are connected, the air duct switching mechanism 6 can be quickly fixed to the air outlet of the suction drive mechanism 4 through the clips 65, which is convenient for disassembly and assembly and reliable for fixation.

[0091] In this embodiment, the air duct switching mechanism 6 is directly mounted on the air outlet of the suction drive mechanism 4, and the dispersed air duct 20 is directly formed within the body 1 through structural design. In other embodiments, the air outlet of the suction drive mechanism 4 can be connected to the exhaust port 51 and the dispersed air duct 11 respectively through different connecting pipes, and a one-way valve is provided on each corresponding pipe. By switching the corresponding one-way valve open, the corresponding air duct (the air duct for drying or the dispersed air duct 20) is opened. In this embodiment, by providing an air duct reversing valve, only a single reversing valve is required to achieve airflow reversal, which is low in cost and easy to control.

[0092] In some embodiments, as Figure 8 As shown, the drying unit further includes a heating component 8 disposed between the air outlet 42 and the exhaust port 51. The heating component 8 is capable of reheating the airflow exiting the drying air duct (secondarily heating the airflow generated by the operation of the suction drive mechanism 4) and discharging the air through the exhaust port 51. That is, the heating component 8 is disposed downstream of the suction drive mechanism 4 and can reheat the airflow discharged from the air outlet 42, which has been heated by the suction drive mechanism 4 and has a certain temperature, to generate an even higher temperature airflow, thereby rapidly drying the surface. The suction drive mechanism 4 can then serve as a preheating agent.

[0093] In some embodiments, when the heating component 8 is just started to preheat, the airflow with a certain temperature discharged from the air outlet 42 of the suction drive mechanism 4 (the suction drive mechanism 4 has just started to work and the temperature is relatively low) can be discharged from the body 1 through the air duct switching mechanism 6 through the wind duct 20. When the heating component 8 is preheated to a certain temperature, the airflow with a certain temperature discharged from the air outlet 42 enters the heating component 8 for heating through the switching of the air duct switching mechanism 6, thereby avoiding the heating component 8 being unable to heat up quickly when the temperature is low, failing to meet the drying requirements, and resulting in poor drying effect. In this embodiment, during the preheating process of the heating component 8, the cold air can be heated by the operation of the fan blades 44 in the suction drive mechanism 4, and after the preheating is completed, the airflow with a certain temperature discharged from the air outlet is quickly heated by the heating component 8 and discharged from the exhaust port 51, thereby achieving rapid drying of the surface.

[0094] In some embodiments, as Figures 9 to 16 As shown, the handle assembly 5 is provided with a suction port 52 connected to the sewage tank 3 , and one of the first air inlet 411 and the second air inlet 412 is connected to the suction port 52 through the sewage tank 3 .

[0095] That is, in this embodiment, the suction drive mechanism 4 not only performs the aforementioned surface drying function but also performs a surface cleaning (sucking) function. The suction drive mechanism 4 can draw surface dirt into the sewage tank 3 through the suction port 52 for surface cleaning. While performing surface drying, the suction drive mechanism 4 can also draw cool air from the outside into the sewage tank 3 through the suction port 52. After being discharged from the sewage tank 3, the air enters the suction drive mechanism 4 through the first air inlet 411 or the second air inlet 412.

[0096] In this embodiment, the first air inlet 411 provided at the top of the suction drive mechanism 4 is communicated with the sewage tank 3 , and the second air inlet 412 provided at the bottom of the suction drive mechanism 4 is used for the entry of heat dissipation air.

[0097] When cleaning a surface, the dust or sewage on the surface to be cleaned (such as the ground) can be sucked into the sewage tank 3 through the suction port 52 by the operation of the suction drive mechanism 4, so as to achieve surface cleaning; when drying a surface, the external cold air can be introduced into the sewage tank 3 through the suction port 52 by the operation of the suction drive mechanism 4, and the cold air is introduced into the suction drive mechanism 4 through the pipeline connecting the sewage tank 3 and the first air inlet 411, and the heat generated by the operation of the fan blades 44 in the suction drive mechanism 4 is used to heat the cold air so that it has a first temperature, and is discharged to the surface to be dried through the first air flow duct 431 and the exhaust port 51, so as to dry the surface; for the cold air entering from the air dispersion port 11 and the second air inlet 412, the heat generated by the operation of the power component 45 in the suction drive mechanism 4 is used to heat it so that it has a second temperature, and is discharged to the surface to be dried through the second air flow duct 432 and the exhaust port 51, so as to dry the surface. In this embodiment, the surface cleaning device uses a common airflow generating mechanism (suction drive mechanism 4) for both cleaning and drying. This allows for improvements to existing surface cleaning devices, resulting in low modification costs and eliminating the need for an additional airflow generating mechanism. This helps reduce the overall volume of the device 1 and lowers costs. The suction drive mechanism 4 is preferably a suction motor.

[0098] In some embodiments, as Figure 1 、 Figures 9 to 16 As shown, the body 1 is connected to the handle assembly 5 via a connecting hose 9, the suction port 52 and the exhaust port 51 are provided at the cleaning head of the handle assembly 5, and an air inlet duct 30 for connecting the suction port 52 and the first air inlet 411 or the second air inlet 412, and an air outlet duct 40 for connecting the air outlet 42 and the exhaust port 51 are provided side by side in the connecting hose 9;

[0099] The handle assembly 5 is further provided with a water spray port 53 near the cleaning head. A clean water pipeline 50 connecting the water spray port 53 and the clean water tank 2 is provided in the handle assembly 5 and the connecting hose 9 .

[0100] In this embodiment, the body 1 is connected to the handle assembly 5 via a connecting hose 9, and the suction port 52 and the exhaust port 51 are both arranged at the cleaning port (e.g., the dust suction port), and independent air inlet ducts 30 and air outlet ducts 40 are arranged side by side in the handle assembly 5 and the connecting hose 9. The two are independent of each other and do not interfere with each other, facilitating air inflow and outflow. At the same time, a water spray port 53 and a clean water pipe 50 are provided on the handle assembly 5, so that the suction, cleaning, and drying functions can be integrated into the handle assembly 5 at the same time. The structure is reasonable, which facilitates surface cleaning and improves the applicability of the product. The connecting hose 9 facilitates the extension and retraction of the handle assembly 5 relative to the handheld portion, making it easier for the user to hold the handle for cleaning and improving the user experience.

[0101] In some other embodiments, the handle assembly 5 includes a first handle assembly and a second handle assembly, and the first handle assembly and the second handle assembly are respectively connected to the body 1 through a connecting hose 9;

[0102] The cleaning head of the first handle assembly is provided with a suction port 52 and a water spray port 53. The first connecting hose connecting the first handle assembly to the body 1 is provided with an air inlet duct 30 connecting the suction port 52 and the first air inlet 411 or the second air inlet 412, and a clean water pipe 50 connecting the water spray port 53 and the clean water tank 2.

[0103] An air outlet duct 40 communicating with the exhaust port 51 and the first air inlet 411 or the second air inlet 412 is provided in a second connecting hose connecting the second handle assembly to the machine body 1 .

[0104] That is, in this embodiment, the drying and surface cleaning functions can be achieved respectively by setting different handle assemblies and setting corresponding pipes in the corresponding handle assemblies. A second handle assembly can be added on the basis of the existing first handle assembly. The structure is reasonable and easy to process and manufacture, which can effectively reduce the improvement cost; at the same time, it is convenient for users to use different handle assemblies to achieve different functions.

[0105] The body 1 is also provided with an air inlet duct 30 for connecting the suction port 52 and the first air inlet 411 or the second air inlet 412 (the first air inlet 411 in this embodiment), and an air outlet duct 40 for connecting the air outlet 42 and the exhaust port 51.

[0106] In some embodiments, the air inlet duct 30 connecting the suction port 52 and the first air inlet 411 or the second air inlet 412, and the air outlet duct 40 connecting the air outlet 42 and the exhaust port 51 are closed ducts connected by pipes. Setting the air inlet duct 30 and the air outlet duct 40 as closed ducts can prevent the cold air in the air inlet duct 30 from mixing with the hot air in the air outlet duct 40, thereby reducing the heating efficiency of the cold air. At the same time, as long as the suction drive mechanism 4 and the heating component 8 are continuously operating, cold air from the outside can enter from the suction port 52, and the heated hot air can be discharged from the exhaust port 51 to dry the surface. The hot air discharged to the outside will cool down as the drying progresses, and can be converted into cold air and continue to enter the air flow duct of the suction drive mechanism 4 for drying from the suction port 52, thereby realizing air circulation and thus achieving dynamic drying.

[0107] In other embodiments, at least part of the air inlet duct 30 and at least part of the air outlet duct 40 located in the surface cleaning device can be open ducts separated by components such as partitions or baffles. In this way, the air circulation area can be increased and the air volume in the surface cleaning device can be increased. However, the open structure may cause part of the cold air and hot air to mix, making it take longer for the same amount of cold air to be heated to the preset temperature, which may reduce the heating and drying efficiency.

[0108] Preferably, in this embodiment, at least a portion of the air inlet duct 30 is an open duct to increase the air volume in the surface cleaning device, and the air outlet duct 40 is a closed duct to prevent heat loss of the hot air.

[0109] In some embodiments, as Figures 8 to 16 As shown, the heating component 8 is arranged in the body 1, and the air inlet duct 30 connecting the suction port 52 and the air inlet 41 of the suction drive mechanism 4 includes a first air inlet pipe 301, a second air inlet pipe 302 and a third air inlet pipe 303. The inlet of the first air inlet pipe 301 is connected to the suction port 52, the outlet Q1 of the first air inlet pipe 301 is connected to the inlet of the second air inlet pipe 302, the outlet of the second air inlet pipe 302 is connected to the first connecting port 31 of the sewage tank 3, the second connecting port 32 of the sewage tank 3 is connected to the air inlet 41 of the suction drive mechanism 4 through the third air inlet pipe 303, and the air outlet 42 of the suction drive mechanism 4 is connected to the inlet Q2 of the air outlet duct 40. The air outlet duct 40 can be provided with a heating component 8 in series, as shown in FIG. Figure 11 As shown, a heating inlet 81 and a heating outlet 82 are respectively provided on two opposite sides of the heating component 8 .

[0110] In this embodiment, since the suction port 52 is provided on the handle assembly 5, the first air inlet pipe 301 is arranged horizontally and the second air inlet pipe 302 is arranged vertically, so as to facilitate the connection of the suction port 52 with the sewage tank 3 having a certain height in the body 1. Figure 12 As shown, a baffle 33 is provided within the sewage tank 3. After entering the sewage tank 3 through the second air inlet duct 302, cold air from the outside bypasses the baffle 33 and flows out of the sewage tank 3, entering the suction drive mechanism 4 through the third air inlet duct 303. The air outlet 42 of the suction drive mechanism 4 is connected to an air duct switching mechanism 6, so that the airflow from the suction drive mechanism 4 can be directly transported to the surface through the outlet duct 40 for surface drying, or heated by the heating element 8 of the outlet duct 40 before being transported to the surface for surface drying, or discharged from the suction drive mechanism 4 through the dispersion duct 20 to the outside of the machine body 1, as needed. This air duct structure fully utilizes the suction drive mechanism 4 and sewage tank 3 of the surface cleaning device to improve the device. It has a reasonable structure and clear air flow direction, effectively ensuring the drying effect and reducing the cost of modification.

[0111] In other embodiments, the first air inlet duct 301 and the second air inlet duct 302 may be an integrated structure.

[0112] In some embodiments, as Figure 8 、 Figure 10 and Figure 14 As shown, the heating component 8 is installed at the bottom of the body 1, and the heating component 8 is arranged on the side of the body 1 away from the handle assembly 5. This can effectively increase the length of the air inlet duct 30 and the air outlet duct 40, increase the air volume flowing in the surface cleaning device, and concentrate on drying the surface, thereby improving drying efficiency.

[0113] In some embodiments, a separate fan may be provided within the surface cleaning device to utilize the operation of the fan to introduce more cold air into the body 1, and the airflow generated by the fan is delivered to the suction drive mechanism 4 through the first air inlet 411 of the suction drive mechanism 4, so that the cold air is heated by the operation of the suction drive mechanism 4, and the airflow heated to a certain temperature is discharged to the surface through the exhaust port 51 to dry the surface. The structure of the surface cleaning device including a fan is similar to the structure without a fan described above, and will not be repeated here.

[0114] In addition, when the fan is working, the cold air can also be heated to a certain temperature, so that the cold air entering the suction drive mechanism 4 from the first air inlet 411 has a certain temperature, further improving the drying efficiency.

[0115] In other embodiments, the heating component 8 may also be disposed within the handle assembly 5. The heating component 8 and other drying-related components can be configured as needed, allowing for a wide range of applications. The specific structure and arrangement of the air inlet duct 30, air outlet duct 40, and suction drive mechanism 4, etc., can be referenced to the aforementioned arrangement of the heating component 8 within the machine body 1 and will not be further described here.

[0116] The surface cleaning device may be a fabric cleaning device (such as a garment steamer), a floor cleaning device (such as a vacuum cleaner, a floor scrubber), a wall cleaning device, and the like.

[0117] The above embodiments are merely exemplary embodiments of the present disclosure and are not intended to limit the present disclosure. The scope of protection of the present disclosure is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present disclosure within the essence and scope of protection of the present disclosure, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present disclosure.

Claims

1. A surface cleaning device comprising a body, a clean water tank, a dirty water tank, a suction drive mechanism and a handle assembly, wherein the clean water tank, the dirty water tank and the suction drive mechanism are mounted on the body, characterized in that: The suction drive mechanism is provided with an air inlet and an air outlet, the handle assembly is provided with an exhaust port connected to the air outlet, an air flow duct connected to the air inlet and the air outlet is formed in the suction drive mechanism, the air flow introduced by the air inlet has a certain amount of heat after passing through the air flow duct and is discharged through the exhaust port, and the air outlet is provided with an air duct switching mechanism to selectively connect or close the exhaust port; The air inlet includes a first air inlet and a second air inlet, and the air outlet includes a first air outlet and a second air outlet, a first air flow duct is formed between the first air inlet and the first air outlet, and a second air flow duct is formed between the second air inlet and the second air outlet; The suction drive mechanism includes a fan blade and a power component for driving the fan blade, wherein the fan blade is located in the path of the first air flow duct so that the air flow introduced from the first air inlet has a certain amount of heat after passing through the fan blade and is discharged from the first air outlet; The power component is located in the path of the second air flow duct, so that the air flow introduced from the second air inlet has a certain amount of heat after passing through the power component and is discharged from the second air outlet.

2. The surface cleaning device according to claim 1, characterized in that: The volume of air discharged from the first air outlet is greater than the volume of air discharged from the second air outlet, and the temperature of air discharged from the second air outlet is higher than the temperature of air discharged from the first air outlet.

3. The surface cleaning device according to claim 1, wherein: The air duct switching mechanism is an air duct reversing valve installed on or connected to the air outlet, the air duct reversing valve includes a reversing inlet and a first reversing outlet and a second reversing outlet respectively connected to the reversing inlet, the air outlet is connected to the reversing inlet, the first reversing outlet is connected to the exhaust port, and the second reversing outlet is connected to the air dispersion port provided on the machine body, and the air duct reversing valve can switch the conduction state between the reversing inlet and the first reversing outlet and between the reversing inlet and the second reversing outlet.

4. The surface cleaning device according to claim 3, wherein The first air outlet and the second air outlet are arranged on different sides of the suction drive mechanism, the air duct reversing valve is arranged at the first air outlet or the second air outlet, and the reversing inlet of the air duct reversing valve is connected to the first air outlet or the second air outlet; or The first air outlet is connected to the reversing inlet of the air duct reversing valve through a first pipeline, and the second air outlet is connected to the reversing inlet of the air duct reversing valve through a second pipeline.

5. The surface cleaning device according to claim 3, wherein: The first air outlet and the second air outlet are arranged on the same side of the suction drive mechanism, and the first air outlet and the second air outlet are both connected to the reversing inlet of the same air duct reversing valve.

6. The surface cleaning device according to claim 1 or 3, characterized in that: A partition is provided in the suction drive mechanism to divide the air flow duct used for drying into the first air flow duct and the second air flow duct.

7. The surface cleaning device according to claim 6, characterized in that: The first air inlet is arranged at the top of the suction drive mechanism, the second air inlet is arranged at the bottom of the suction drive mechanism, and the first air outlet and the second air outlet are arranged on the side wall of the suction drive mechanism; The first airflow duct and the second airflow duct are annular ducts arranged around the circumference of the suction drive mechanism, and are respectively located on the upper and lower sides of the suction drive mechanism.

8. The surface cleaning device according to claim 1, wherein: A heating component is further provided between the air outlet and the exhaust port, and the heating component can reheat the airflow with a certain amount of heat discharged from the air outlet and discharge it through the exhaust port.

9. The surface cleaning device according to claim 8, characterized in that: The heating component is arranged in the machine body or the handle assembly.

10. The surface cleaning device according to claim 1, wherein: The handle assembly is provided with a suction port connected to the sewage tank, and one of the first air inlet and the second air inlet is connected to the suction port through the sewage tank.

11. The surface cleaning device according to claim 10, wherein: The body is connected to the handle assembly via a connecting hose, the suction port and the exhaust port are provided at the cleaning head of the handle assembly, and an air inlet duct for connecting the suction port and the first air inlet or the second air inlet, and an air outlet duct for connecting the air outlet and the exhaust port are provided side by side in the connecting hose; The handle assembly is further provided with a water spray port at a position close to the cleaning head, and a clean water pipeline connecting the water spray port and the clean water tank is provided in the handle assembly and the connecting hose.

12. The surface cleaning device according to claim 10, wherein: The handle assembly includes a first handle assembly and a second handle assembly, and the first handle assembly and the second handle assembly are respectively connected to the body through a connecting hose; The cleaning head of the first handle assembly is provided with a suction port and a water spray port. A first connecting hose connecting the first handle assembly to the body is provided with an air inlet duct for connecting the suction port and the first air inlet or the second air inlet, and a clean water pipeline for connecting the water spray port and the clean water tank. The second connecting hose connecting the second handle assembly and the machine body is provided with an air outlet duct for connecting the exhaust port and the air outlet.

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