Surface cleaning head and surface cleaning device

Abstract

The application discloses a surface cleaning head and a surface cleaning device. The surface cleaning head comprises a seat body, a front part of the seat body defining a front agitator chamber, a rear part of the seat body defining a rear agitator chamber, a first cleaning roller rotatably mounted to the front agitator chamber, the first cleaning roller comprising a first roller body and first cleaning bristles, a liquid distributor for dispensing cleaning liquid to the first cleaning roller, a second cleaning roller rotatably mounted to the rear agitator chamber, the second cleaning roller comprising a second roller body and second cleaning bristles, the second roller body being a heat-conductive body and having a cavity inside, a suction passage in fluid communication with at least the front agitator chamber, and a heater comprising a heating body capable of converting electrical energy into heat energy, the heater being built-in in the cavity and in thermal conduction connection with the second roller body. By virtue of the use of the built-in heater, the second cleaning roller can be kept in a dry state as much as possible, which can effectively reduce the amount of residual moisture on the surface after cleaning.

Description

Technical Field

[0001] This application relates to the field of surface cleaning equipment technology, and in particular to a surface cleaning head and a surface cleaning device equipped with the surface cleaning head. Background Technology

[0002] Surface cleaning equipment that uses cleaning liquids, such as water, for cleaning operations is widely used in daily life. For example, wet floor cleaning equipment can use water or a water / detergent mixture to scrub floors. These wet floor cleaning equipment are equipped with a collection container for used cleaning liquid. The used cleaning liquid, which has become dirty liquid, along with debris from the floor, can be collected into the collection container by a suction motor or other device. During the process of collecting the dirty liquid and debris, some residual moisture is often left on the cleaned floor. In order to avoid secondary pollution caused by users stepping on this residual moisture, users have to wait for a period of time before entering the space where the floor was, which can cause inconvenience to users.

[0003] To reduce residual moisture on the floor, some wet floor cleaning equipment allows only a very low flow rate of cleaning liquid onto the floor per unit time. While this avoids leaving excessive water on the cleaned floor, the low flow rate also means less debris carried by the liquid, potentially weakening the cleaning ability of the wet floor cleaning equipment. Other wet floor cleaning machines incorporate a hot air system, using water or a water / detergent mixture to scrub the floor while simultaneously drying it with hot air. However, due to the extremely short scrubbing time, even controlling the hot air system to its maximum operating power makes it difficult to dry the floor in such a short time. Furthermore, the use of hot air generates significant noise from the wet floor cleaning equipment. Therefore, various configurations in existing wet floor cleaning equipment still fail to effectively solve the problem of residual moisture on the floor. Summary of the Invention

[0004] In order to solve the problem of moisture residue on the surface to be cleaned in the prior art, the purpose of this application is to provide a surface cleaning device that can effectively reduce the moisture residue on the surface to be cleaned after the surface cleaning head has worked.

[0005] On one hand, this application provides a surface cleaning head capable of moving along the surface to be cleaned, the surface cleaning head comprising:

[0006] A base having a front portion and a rear portion, the front portion defining a front agitation chamber and the rear portion defining a rear agitation chamber;

[0007] A first cleaning roller is rotatably mounted to the front agitation chamber about its own longitudinal axis. The first cleaning roller includes a first roller body and first cleaning bristles that cover the outer peripheral surface of the first roller body and can be wetted by cleaning liquid.

[0008] A liquid dispenser for dispensing the cleaning liquid to the first cleaning roller;

[0009] The second cleaning roller is rotatably mounted to the rear agitation chamber about its own longitudinal axis. The second cleaning roller includes a second roller body and a second cleaning bristle arranged on the outer peripheral surface of the second roller body and capable of absorbing the cleaning liquid. The second roller body is a heat conductor and has a cavity inside.

[0010] The suction channel is in at least fluid communication with the pre-stirring chamber; and

[0011] A heater, used to heat the second cleaning roller and including a heating element capable of converting electrical energy into heat energy, is built into the cavity and forms a thermal conductive connection with the second roller body.

[0012] In the above technical solution, preferably, the suction channel is in fluid communication with the rear agitation chamber, and the suction channel has a front inlet that connects to the front agitation chamber and a rear inlet that connects to the rear agitation chamber.

[0013] In the above technical solution, preferably, the diameter of the front inlet is larger than the diameter of the rear inlet.

[0014] In the above technical solution, preferably, the suction channel is located between the front stirring chamber and the rear stirring chamber.

[0015] In the above technical solution, preferably, the surface cleaning head further includes a front scraper roller component, which is arranged in the front agitation chamber and abuts against the first cleaning roller.

[0016] In the above technical solution, preferably, the surface cleaning head further includes: a rear scraper roller component, which is arranged in the rear agitation chamber and abuts against the second cleaning roller, and the rear scraper roller component is located downstream of the rear inlet.

[0017] In the above technical solution, preferably, the second cleaning roller further includes a pair of end caps, which are fixed to the ends of the second roller body. A metal rotating shaft is fixedly disposed on each end cap, and the metal rotating shaft is electrically connected to the heating element.

[0018] In the above technical solution, preferably, the surface cleaning head further includes: a pair of elastic metal discs disposed at the rear of the base; the pair of elastic metal discs are electrically connected to the pair of metal rotating shafts respectively.

[0019] In the above technical solution, preferably, the second roller is a metal component.

[0020] In the above technical solution, preferably, the second cleaning roller and the heater constitute a component that can be completely removed from the rear agitation chamber.

[0021] In the above technical solution, preferably, the heater includes a heat-conducting component, the heating element is embedded in the heat-conducting component, and the heat-conducting component is in contact with the cavity wall of the cavity.

[0022] On the other hand, this application provides a surface cleaning device, which includes the surface cleaning head described in the first aspect above, a water supply tank fluidly connected to the liquid dispenser, a recovery tank fluidly connected to the suction channel, and a suction motor fluidly connected to the recovery tank.

[0023] Preferably, the surface cleaning equipment further includes a power supply device, which is electrically connected to both the suction motor and the heating element.

[0024] Preferably, the power supply device includes a rechargeable battery pack.

[0025] Preferably, the power supply device includes a power cord that can be electrically connected to a household electrical outlet.

[0026] Preferably, the surface cleaning device is a vertical floor cleaning device and includes: a handle body part having a body, the lower part of the body being rotatably connected to the base, and a handle rod assembly for the user to hold mounted on the upper part of the body.

[0027] Preferably, the water supply tank and the recycling tank are detachably mounted on the machine body.

[0028] Preferably, the surface cleaning device is configured as a surface cleaning robot capable of autonomously driving and turning on the surface to be cleaned. To achieve the above objectives, this application adopts the following technical solution:

[0029] Compared with the prior art, this application achieves the following beneficial effects: By using a built-in heater, the second cleaning roller can be kept as dry as possible. The second cleaning roller can perform a dry wiping effect on the surface to be cleaned after the first cleaning roller has cleaned it. This effectively reduces the amount of residual moisture on the cleaned surface, allowing the user to enter the cleaned surface space almost without waiting, thus facilitating the user's use. Attached Figure Description

[0030] Figure 1 A side view of a surface cleaning device provided in an embodiment of this application;

[0031] Figure 2 A perspective view of a surface cleaning device provided in an embodiment of this application;

[0032] Figure 3 A perspective view of a surface cleaning head from a low angle, provided for an embodiment of this application;

[0033] Figure 4 for Figure 3 Front view of the surface cleaning head;

[0034] Figure 5 for Figure 3 A schematic diagram of the cross-section of the surface cleaning head at the second cleaning roller;

[0035] Figure 6 for Figure 3 A schematic diagram of the longitudinal section of the surface cleaning head.

[0036] The components include: 10. Surface cleaning equipment; 1. Cleaning head; 2. Handle body; 3. Rotary joint; 11. Base; 111. Front part; 112. Rear part; 12. Front agitation chamber; 13. Rear agitation chamber; 14. Suction channel; 141. Front inlet; 142. Rear inlet; 15. First cleaning roller; 16. Liquid distributor; 17. Front scraper assembly; 18. Second cleaning roller; 19. Heater; 110. Rear scraper assembly; 1111. Front cover plate; 121. First lower opening; 122. Front opening; 1 51. First roller body; 152. First cleaning brush bristles; 1121. Rear cover plate; 131. Second lower opening; 132. Rear opening; 181. Second roller body; 182. Second cleaning brush bristles; 1811. Cavity; 191. Heating element; 192. Heat-conducting component; 183. End cap; 184. End cap; 185. Metal rotating shaft; 1122. Elastic metal disc; 21. Handle; 22. Machine body; 211. Operating unit; 31. Water supply tank; 41. Recycling bin; 42. Suction motor; 51. Rechargeable battery pack. Detailed Implementation

[0037] The surface cleaning device of this application is configured to contact a surface to be cleaned using a cleaning head; the surface to be cleaned is typically a hard surface, such as a floor or tile surface. The cleaning head scrubs the surface using a cleaning liquid, while simultaneously thoroughly recovering the used cleaning liquid and any debris present on the surface. This surface cleaning device solution can be applied to various types of cleaning equipment.

[0038] The terms “up” and “down” mentioned below are oriented relative to the surface cleaning head on the surface to be cleaned, and the terms “front” and “back” are oriented relative to the direction in which the operator stands on the surface to be cleaned and pushes the surface cleaning device (i.e., the pushing direction from back to front).

[0039] Figure 1-2 This application illustrates a surface cleaning device 10; the surface cleaning device 10 is an upright machine including a cleaning head 1 and a handle body portion 2 located on the upper side of the cleaning head 1. The lower part of the handle body portion 2 is pivotally connected to the cleaning head 1 via a rotary joint 3. The handle body portion 2 has a storage position that is upright relative to the cleaning head 1 for easy storage and a working position that is tilted backward relative to the cleaning head 1 for easy pushing of the surface cleaning device 10 by the user.

[0040] like Figure 3-6 As shown, the cleaning head 1 has a base 11, which has a front portion 111 and a rear portion 112. The front portion 111 is provided with a front agitation chamber 12, and the rear portion 112 is provided with a rear agitation chamber 13. A suction channel 14 is provided between the front agitation chamber 12 and the rear agitation chamber 13 in the base 11. The suction channel 14 has a front inlet 141 communicating with the front agitation chamber 12 and a rear inlet 142 communicating with the rear agitation chamber 13. The diameter D1 of the front inlet 141 is larger than the diameter D2 of the rear inlet 142.

[0041] The front agitation chamber 12 is equipped with a first cleaning roller 15 that can be driven to rotate, a liquid distributor 16 that partially extends into the front agitation chamber 12, and a front scraper member 17. The rear agitation chamber 13 is equipped with a second cleaning roller 18, a heater 19, and a rear scraper member 110. With this arrangement, the first cleaning roller 15 and the second cleaning roller 18 are spaced apart in the front-rear direction, and the cleaning head 1 can be supported on the surface to be cleaned by the first cleaning roller 15 and the second cleaning roller 18. That is, within the same working time, the cleaning head 1 can simultaneously use the first cleaning roller 15 and the second cleaning roller 18 to clean the surface to be cleaned.

[0042] The front portion 111 includes a front cover plate 1111 that covers the upper side of the first cleaning roller 15. The lower portion of the front agitation chamber 12 has a first lower opening 121, and the front portion of the front agitation chamber 12 has a front opening 122, which communicates with the first lower opening 121. The lower portion and the front portion of the first cleaning roller 15 protrude from the first lower opening 121 and the front opening 122, respectively, to contact the surface to be cleaned.

[0043] The first cleaning roller 15 includes a first roller body 151 defining a rotation axis X1 extending in a horizontal direction and first cleaning bristles 152 covering the outer peripheral surface of the roller body 151, the first cleaning bristles 152 being configured to be wetted by a cleaning liquid such as water.

[0044] The cleaning head 1 is also equipped with a first motor (not shown in the figure) that is connected to the first cleaning roller 15 to drive the first cleaning roller 15 to rotate around the rotation axis X1.

[0045] The liquid dispenser 16 faces the first cleaning roller 15 and is configured to dispense cleaning liquid from the liquid supply system (not shown) onto the first cleaning roller 15.

[0046] The front scraper assembly 17 is positioned within the front agitation chamber 12 closer to the front inlet 141 than the liquid distributor 16; with respect to the rotation direction of the first cleaning roller 15, the front scraper assembly 17 is located downstream of the front inlet 141, and the liquid distributor 16 is located downstream of the front scraper assembly 17. The front scraper assembly 17 is typically a rigid scraper component that abuts against the first cleaning bristles 152 of the first cleaning roller 15 to remove liquid and debris from the first cleaning bristles 152 of the first cleaning roller 15.

[0047] The rear portion 112 includes a rear cover plate 1121 that covers the upper side of the second cleaning roller 18. The lower portion of the rear agitation chamber 13 has a second lower opening 131, and the rear portion of the rear agitation chamber 13 has a rear opening 132. The lower portion of the second cleaning roller 18 protrudes from the second lower opening 131 to contact the surface to be cleaned; the rear portion of the second cleaning roller 18 protrudes from the rear opening 132.

[0048] The second cleaning roller 18 includes a second roller body 181 defining a rotation axis X2 extending in a horizontal direction and second cleaning bristles 182 covering the outer peripheral surface of the roller body 181. The second cleaning bristles 182 are configured to absorb cleaning liquids such as water. The second roller body 181 has a hollow structure with a cavity 1811 inside.

[0049] The cleaning head 1 is also equipped with a second motor (not shown in the figure) that is drively connected to the second cleaning roller 18 to drive the second cleaning roller 18 to rotate about the rotation axis X2. In other feasible embodiments, the first motor and the second motor can also be replaced by a single motor, that is, the second cleaning roller 18 and the first cleaning roller 15 can be driven to rotate simultaneously by the same motor.

[0050] The heater 19 is built into the cavity 1811. The heater 19 includes a heating element 191 that can convert electrical energy into heat energy and a heat-conducting component 192 that is in thermal contact with the heating element 191. In this example, the second roller 181 is a heat-conducting metal component, which can be made of a metal material with excellent thermal conductivity such as aluminum or copper. The heating element 191 is embedded in the heat-conducting component 192, which is in close contact with the cavity wall of the cavity 1811. Thus, the heat generated on the heating element 191 is first conducted to the heat-conducting component 192, and then to the second roller 181, ultimately heating the second cleaning bristles 182 on the outer peripheral surface of the second roller 181.

[0051] The heater 19 is not limited to the above types. It can also be a heater that includes tubular components such as quartz tubes or carbon fiber tubes, or a heater that includes ceramic heating plates, as long as it can heat the second cleaning roller 18.

[0052] The second cleaning roller 18 also includes a pair of end caps 183 and 184, which are fixed to the two shaft ends of the second roller body 181. A metal rotating shaft 185 is fixedly mounted on each of the end caps 183 and 184, and the metal rotating shaft 185 is electrically connected to the heating element 191. At the rear part 112 of the base 11, in the position of the rear stirring chamber 13, a pair of elastic metal discs 1122 are also arranged, and the pair of elastic discs 1122 are electrically connected to the pair of metal rotating shafts 185.

[0053] In this example, the second cleaning roller 18 and the heater 19 constitute an assembly that can be completely removed from the rear agitation chamber 13. After the assembly is removed, a pair of metal rotating shafts 185 are disconnected from a pair of flexible metal discs 1122.

[0054] The rear scraper assembly 110 is arranged in the rear agitation chamber 13 and abuts against the second cleaning bristles 182 of the second cleaning roller 18. The rear scraper assembly 110 is located downstream of the rear inlet 142. The rear scraper assembly 110 can scrape off some debris from the second cleaning roller 18 so that it can be sucked away by the suction channel 14.

[0055] The handle body portion 2 includes a handle 21 and a body 22 located at the top. The handle 21 is fixedly connected to the top of the body 22 and configured to be held by a user. The user can use the handle 21 to hold the surface cleaning device 10 with one hand and push the cleaning head 1 of the surface cleaning device 10 back and forth on the surface to be cleaned in a rearward tilted working position. The handle 21 is also provided with an operating part 211 that is signal-connected to a control unit (not shown) for the user to control the operation of the surface cleaning device 10. The specific form of the operating part 211 is not limited to a button, trigger, trigger device, switch, etc. In other embodiments, the operating part may also be located in other places of the surface cleaning device, such as on the top or side wall of the handle body portion below the handle. The operating part may also be a portable remote control or may be located on a handheld terminal capable of interacting with the surface cleaning device.

[0056] The main body 22 can accommodate and support multiple working parts on the handle body 2. These multiple working parts include a water tank 31 that can store and supply cleaning liquid. Preferably, the water tank 31 is detachably mounted on the main body 22 so that the user can add clean water to it.

[0057] The water supply tank 31 is in fluid communication with the liquid distributor 16 on the cleaning head 1, forming a liquid delivery path (not shown in the figure) for the flow of cleaning liquid. A selectively operable pump (not shown in the figure) is also installed on this delivery path. By controlling the pump to turn it on and off, liquid can be selectively delivered to the liquid distributor 16 or the fluid communication between the water supply tank 31 and the liquid distributor 16 can be blocked. The pump can be located either inside the machine body 22 or inside the cleaning head 1. The liquid supply system, consisting of the water supply tank 31, the delivery path, the pump, and the liquid distributor 16, can supply liquid to the first cleaning roller 15 on demand.

[0058] The working components mounted on the body 22 also include a collection tank 41 for receiving and storing waste liquid and debris, and a suction motor 42 mounted on top of the collection tank 41. The suction channel 14, the collection tank 41, and the suction motor 42 are in sequential fluid communication. The suction motor 42 is configured to push air-containing fluid along the recovery flow path from the front inlet 141 and the rear inlet 142 toward the collection tank 41. The collection tank 41 is detachably mounted on the body 22 for easy emptying by the user. The recovery system consisting of the suction channel 14, the collection tank 41, and the suction motor 42 is capable of recovering waste liquid and debris from surfaces to be cleaned.

[0059] The body 22 is also equipped with a rechargeable battery pack 51, which is electrically connected to the heating element 191 to provide power for the heating element 191.

[0060] In other embodiments, the power supply device of the body 22 may also include a power cord that can be electrically connected to a household electrical outlet. The heating element 191 is provided with the electrical energy required for heating by the alternating current introduced through the power cord.

[0061] When the surface cleaning device 10 is working, the pump starts, and the cleaning liquid in the water supply tank 31 reaches the liquid distributor 16 through the liquid delivery path and is distributed by the liquid distributor 16 to the first cleaning bristles 152 of the first cleaning roller 15. The rotating first cleaning roller 15 uses the cleaning liquid to scrub the surface to be cleaned. The suction motor 42 starts and forms a flowing airflow. The first cleaning roller 15 carries the dirt and debris picked up from the surface to be cleaned into the front stirring chamber 12 along with the flowing airflow, and moves along the recovery flow path towards the suction motor 42. This dirt and debris will finally be stored in the recovery box 41. At the same time, the rotating second cleaning roller 18 will continuously contact the surface to be cleaned that the first cleaning roller 15 passes through, thereby absorbing the liquid remaining on the surface to be cleaned with the help of the second cleaning bristles 182. The heater 19 starts working, and the liquid absorbed by the second cleaning bristles 182 will be evaporated by the heating effect of the heater 19. This allows the second cleaning bristles 182 to remain dry and have excellent liquid absorption performance after long-term use.

[0062] The surface cleaning head solution of this application can be used not only in the above-mentioned vertical machines, but also in surface cleaning robots that can autonomously move and turn on the surface to be cleaned; or in tank-type surface cleaning machines.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A surface cleaning head, capable of moving along the surface to be cleaned, characterized in that, The surface cleaning head includes: A base having a front portion and a rear portion, the front portion defining a front agitation chamber and the rear portion defining a rear agitation chamber; A first cleaning roller is rotatably mounted to the front agitation chamber about its own longitudinal axis. The first cleaning roller includes a first roller body and first cleaning bristles that cover the outer peripheral surface of the first roller body and can be wetted by cleaning liquid. A liquid dispenser for dispensing the cleaning liquid to the first cleaning roller; The second cleaning roller is rotatably mounted to the rear agitation chamber about its own longitudinal axis. The second cleaning roller includes a second roller body and a second cleaning bristle arranged on the outer peripheral surface of the second roller body and capable of absorbing the cleaning liquid. The second roller body is a heat conductor and has a cavity inside. A suction channel, which is in fluid communication with both the front agitation chamber and the rear agitation chamber, has a front inlet communicating with the front agitation chamber and a rear inlet communicating with the rear agitation chamber, the diameter of the front inlet being larger than the diameter of the rear inlet; and A heater, used to heat the second cleaning roller and including a heating element capable of converting electrical energy into heat energy, is built into the cavity and forms a thermal conductive connection with the second roller body.

2. The surface cleaning head according to claim 1, characterized in that, The suction channel is located between the front stirring chamber and the rear stirring chamber.

3. The surface cleaning head according to claim 1, characterized in that, Also includes: A front scraper roller assembly is arranged in the front agitation chamber and abuts against the first cleaning roller.

4. The surface cleaning head according to claim 1, characterized in that, Also includes: A rear scraper roller assembly is arranged in the rear agitation chamber and abuts against the second cleaning roller, the rear scraper roller assembly being located downstream of the rear inlet.

5. The surface cleaning head according to claim 1, characterized in that, The second cleaning roller also includes a pair of end caps, which are fixed to the ends of the second roller body. Each end cap is fixedly provided with a metal rotating shaft, and each metal rotating shaft is electrically connected to the heating element.

6. The surface cleaning head according to claim 5, characterized in that, Also includes: A pair of flexible metal discs are disposed at the rear of the base; the pair of flexible metal discs are electrically connected to a pair of metal rotating shafts respectively.

7. The surface cleaning head according to claim 1, characterized in that, The second roller is a metal component.

8. The surface cleaning head according to claim 1, characterized in that, The second cleaning roller and the heater constitute a component that can be completely removed from the rear agitation chamber.

9. The surface cleaning head according to claim 1, characterized in that, The heater includes a heat-conducting component, the heating element is embedded in the heat-conducting component, and the heat-conducting component is in contact with the cavity wall.

10. A surface cleaning device comprising a surface cleaning head as described in any one of claims 1-9, a water supply tank in fluid communication with the liquid dispenser, a recovery tank in fluid communication with the suction channel, and a suction motor in fluid communication with the recovery tank.

11. The surface cleaning equipment according to claim 10, characterized in that, Also includes: The power supply is electrically connected to both the suction motor and the heating element.

12. The surface cleaning equipment according to claim 11, characterized in that, The power supply device includes a rechargeable battery pack.

13. The surface cleaning equipment according to claim 11, characterized in that, The power supply device includes a power cord that can be electrically connected to a household electrical outlet.

14. The surface cleaning equipment according to claim 10, characterized in that, The surface cleaning device is a vertical floor cleaning device and includes: a handle body part, having a body, the lower part of the body being rotatably connected to the base, and a handle rod assembly for the user to hold mounted on the upper part of the body.

15. The surface cleaning device according to claim 14, characterized in that, The water supply tank and the recycling tank are detachably mounted on the machine body.

16. The surface cleaning equipment according to claim 10, characterized in that, The surface cleaning device is constructed as a surface cleaning robot capable of autonomously driving and turning on the surface to be cleaned.

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