Cleaning head

Abstract

The application discloses a heating device and a cleaning head with the same. The heating device comprises an elongated body, a heating element and a flow guide element. The elongated body comprises a first end and a second end oppositely arranged along the length direction of the elongated body. The heating element is arranged in a heating area defined by the elongated body. The flow guide element is used to guide fluid to be delivered to at least one group of liquid outlets after passing through the heating area. The elongated body is provided with the at least one group of liquid outlets, which comprises a plurality of liquid outlets. The plurality of liquid outlets are arranged at intervals between the first end and the second end. The plurality of liquid outlets arranged at intervals along the length direction of the elongated body can ensure uniform liquid outlet.

Description

[0001] This application is a divisional application of the invention patent application filed on December 9, 2021, with application number 202111501884.5 and invention title "Heating Device and Cleaning Head". Technical Field

[0002] This invention relates to the field of cleaning equipment technology, and more particularly to a cleaning head. Background Technology

[0003] As living standards improve, people have increasingly higher requirements for floor cleaning. Currently, the market offers a variety of wet cleaning equipment, such as floor scrubbers and steam mops, which achieve deeper cleaning by wet cleaning the surface. To further improve cleaning results, the cleaning solution is heated, and the heated fluid or steam is sprayed onto the surface to be cleaned or onto the cleaning head, effectively removing stubborn stains.

[0004] Currently, most heating devices on the market are located outside the roller brush. The heating device includes a fluid inlet and a fluid outlet. The heated fluid or steam flowing out from the fluid outlet is distributed to the roller brush or the surface to be cleaned through a fluid distributor. Some energy is lost during the entire distribution process. Summary of the Invention

[0005] To address the shortcomings of the aforementioned technologies, this invention provides a heating device with multiple liquid outlets spaced apart along the axial direction to achieve uniform liquid discharge in the axial direction.

[0006] On one hand, the present invention provides a heating device, including

[0007] An elongated body, the elongated body comprising a first end and a second end disposed opposite to each other along its length;

[0008] A heating element is disposed in the heating area defined by the elongated body;

[0009] A flow guiding element is used to guide the fluid through the heating zone and deliver it to the at least one set of liquid outlets;

[0010] The elongated body is provided with at least one set of liquid outlets, the set of liquid outlets including multiple liquid outlets, which are distributed at intervals between the first end and the second end.

[0011] Optionally, it includes multiple sets of liquid outlets, which are spaced apart along the width direction of the elongated body.

[0012] Optionally, the elongated body is a cylindrical structure that defines an accommodating space, in which at least a portion of the flow guiding element is disposed.

[0013] Optionally, a flow guiding channel is provided near the heating area of ​​the flow guiding element, and the flow guiding channel includes a first channel and a second channel that communicates with the first channel and is located downstream of the first channel.

[0014] Optionally, at least a portion of the second channel extends along the length direction of the elongated body.

[0015] Optionally, at least a portion of the first channel bends and extends along the length direction.

[0016] Optionally, the flow channel is a flow guide groove, which cooperates with the inner wall of the slender body to form a closed channel.

[0017] Optionally, the second channel includes a left flow channel and a right flow channel connected in parallel, and the left flow channel and the right flow channel are respectively disposed on both sides of the first channel along the width direction of the elongated body.

[0018] Optionally, the heating device further includes a liquid inlet, which is disposed on the flow guiding element.

[0019] On the other hand, the present invention also provides a cleaning head, including

[0020] A roller brush cylinder, wherein a receiving space is defined within the roller brush cylinder; the roller brush cylinder is provided with a fluid outlet;

[0021] The accommodating space is provided with the heating device described in any of the above embodiments.

[0022] The present invention also provides

[0023] This invention provides a heating device and a cleaning head having the same. The heating device includes an elongated body, a heating element, and a flow guiding element. The elongated body includes a first end and a second end disposed opposite each other along its length. The heating element is disposed within a heating area defined by the elongated body. The flow guiding element is used to guide fluid through the heating area and deliver it to the at least one set of liquid outlets; wherein the elongated body is provided with at least one set of liquid outlets, the set of liquid outlets including multiple liquid outlets, the multiple liquid outlets being spaced apart between the first end and the second end. The arrangement of multiple liquid outlets spaced apart along the length of the elongated body ensures uniform liquid flow. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a surface cleaning device according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the cleaning head in one embodiment;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of the cleaning head housing is shown.

[0027] Figure 4 This is a schematic diagram of the brush roller structure in one embodiment;

[0028] Figure 5 This is an exploded view of the brush roller structure in one embodiment;

[0029] Figure 6 This is a schematic diagram of the cross-section of the brush roller along the axial direction at an angle.

[0030] Figure 7 This is a schematic diagram of the cross-section of the brush roller along the axial direction at another angle;

[0031] Figure 8 This is a schematic diagram of the flow guiding element at an angle;

[0032] Figure 9 This is a schematic diagram of the flow guiding element from another angle;

[0033] Figure 10 This is a schematic diagram of the structure of the first cylinder in one embodiment;

[0034] Figure 11 This is a schematic diagram of the structure of the second cylinder in one embodiment;

[0035] Figure 12 This is a schematic diagram of the structure of an elongated body in one embodiment;

[0036] Figure 13 This is a schematic diagram of the slender body along the axial direction;

[0037] Figure 14 This is a structural diagram of the handle at one angle;

[0038] Figure 15 This is a structural diagram of the handle from another angle;

[0039] Figure 16 This is a schematic diagram of the structure of the built-in fluid distributor in one embodiment;

[0040] Figure 17 This is a schematic diagram of the structure of the built-in heating element in one embodiment of the brush roller;

[0041] Figure 18 This is a schematic diagram of a structure in which a liquid collection chamber is provided on the inner wall of the roller brush cylinder in one embodiment;

[0042] Figure 19 This is a schematic diagram of a structure in which a liquid collection chamber is provided on the inner wall of the roller brush cylinder in one embodiment;

[0043] Figure 20This is a schematic diagram of a structure in which a guide groove is provided on the inner wall of the roller brush cylinder in one embodiment;

[0044] Figure 21 This is a schematic cross-sectional view of the roller brush cylinder along the axial direction in one embodiment;

[0045] Figure 22 This is a schematic cross-sectional view of the brush cylinder along the axial direction in another embodiment;

[0046] Figure 23 This is a schematic cross-sectional view of the brush cylinder along the axial direction in another embodiment;

[0047] Figure 24 This is a schematic cross-sectional view of the brush roller along the axial direction in one embodiment. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0049] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0050] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] This application discloses a surface cleaning device, which can be a vertical surface cleaning device, a handheld surface cleaning device, or a self-propelled surface cleaning device; no specific limitations are made here. (Reference) Figure 1-3 , Figure 1 This is a schematic diagram of the structure of a surface cleaning device according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the cleaning head in one embodiment. Figure 3 for Figure 2 The diagram shows the structural structure of the housing of the cleaning head. Figure 1 The image shown is of a vertical cleaning device. Figure 1 The surface cleaning device 100 includes a cleaning fluid supply system for supplying cleaning fluid to the surface to be cleaned or to a wiping device used to wipe the surface. The cleaning fluid supply system includes a cleaning fluid tank and a supply line in fluid communication with the cleaning fluid tank. The surface cleaning device 100 also includes a cleaning head 10, which includes a housing 2 movable to the surface to be cleaned, the housing 2 defining an installation space. In a vertical device, the cleaning head 10 can be pivotally connected to the main body; in a handheld device, the cleaning head 10 can be connected to the main body via an extension tube; in a self-propelled cleaning device, such as a robotic vacuum cleaner, the housing 2 of the cleaning head 10 is at least part of the main body housing of the robotic vacuum cleaner, although the main body housing of the robotic vacuum cleaner can also have the same structure as the housing 2 of the cleaning head 10. Figure 4 This is a schematic diagram of the brush roller structure in one embodiment. Figure 5 This is an exploded view of the brush roller structure in one embodiment. Figure 6 This is a schematic diagram of the cross-section of the brush roller along the axial direction at an angle. Figure 7 This is a schematic cross-sectional view of the brush roller along the axial direction at another angle. (Reference) Figure 4 and 5The cleaning head 10 is equipped with a brush roller 101, which is installed in the mounting space defined by the housing. The brush roller 101 can rotate around its own axis. A wiping element 17 can be provided on the outer periphery of the roller brush cylinder 1. The wiping element 17 can be composed of one or more materials such as stiff bristles, sponge, fluff, and cotton cloth, which are not limited here. The wiping element 17 rotates substantially synchronously with the brush roller to clean the surface to be cleaned. The brush roller includes a roller brush cylinder 1, the interior of which defines a receiving space. The brush roller also includes a first end cap 3 and a second end cap 4 arranged opposite each other along the axial direction of the roller brush cylinder 1. The first end cap 3 is provided with a liquid inlet pipe 31 for liquid to enter the receiving space and / or a line channel 32 for power supply to enter the receiving space. Reference Figure 6 and 7 The accommodating space can be equipped with a separate heating device or a fluid distributor. Alternatively, both a heating device and a fluid distributor can be installed simultaneously within the accommodating space. The heating device can be mounted on the first end cap 3, either fixedly or detachably. It can also be installed on the roller brush cylinder 1 to heat the fluid entering from the inlet pipe 31. The fluid distributor directly or indirectly distributes the heated fluid to the wiping piece 17 or the surface to be cleaned. (Reference) Figure 14 and 15 , Figure 14 This is a schematic diagram of the handle structure at one angle. Figure 15 This is a schematic diagram of the handle from another angle. The first end cap 3 is provided with an inlet pipe 31 for liquid to enter the containing space and / or a line channel 32 for the power supply line to enter the containing space. Referring to the figure, at least part of the inlet pipe 31 is substantially coaxial with the rotation axis of the brush roller. The first end cap 3 is provided with a handle 33, which is used to detachably install the brush roller to the housing. The handle 33 is also provided with an inlet pipe 31 for liquid to enter the containing space and / or a line channel 32 for the power supply line to enter the containing space.

[0053] refer to Figure 5-7 The roller brush cylinder 1 is detachably connected to the first end cap 3. When cleaning the brush roller, the user only needs to remove the roller brush cylinder 1 axially for cleaning; there is no need to clean the first end cap 3, which contains pipes or circuits, thus avoiding damage to the internal pipes or circuits. Furthermore, by detachably connecting the cylinder to the first end cap 3, the brush roller can continue to be used when the user replaces it, as the first end cap 3 contains circuits or pipes, reducing replacement costs.

[0054] refer to Figure 5The first end cap 3 includes a first fixing part 34, and a first bearing 35 is provided on the outer periphery of a portion of the first fixing part 34. A first rotating part 36 is provided on the outer periphery of the first bearing 35, and the first rotating part 36 is provided with a first snap-fit ​​structure. The first snap-fit ​​structure cooperates with a third snap-fit ​​structure located on the roller brush cylinder 1 to realize the disassembly / assembly between the roller brush cylinder 1 and the first end cap 3. The second end cap 4 includes a second fixing part 41, and a second bearing 42 is provided on the outer or inner periphery of a portion of the second fixing part 41. A second rotating part 43 is provided on the inner or outer periphery of the second bearing 42, and the second rotating part 43 is provided with a second snap-fit ​​structure. The second snap-fit ​​structure cooperates with a fourth snap-fit ​​structure located on the roller brush cylinder 1 to realize the disassembly / assembly between the roller brush cylinder 1 and the second end cap 4. Referring to the figure, the wiping sample 17 has a cylindrical structure and is detachably disposed on the roller brush cylinder 1 along the axial direction of the brush roller. A positioning structure is provided between the wiping specimen 17 and the cylindrical structure. The positioning structure ensures that the wiping specimen 17 and the brush roller remain basically stationary when the brush roller rotates.

[0055] refer to Figure 5-13 , Figure 8 This is a schematic diagram of the flow guiding element at an angle. Figure 9 This is a schematic diagram of the flow guiding element from another angle. Figure 10 This is a schematic diagram of the structure of the first cylinder in one embodiment. Figure 11 This is a schematic diagram of the structure of the second cylinder in one embodiment. Figure 12 This is a schematic diagram of the structure of an elongated body in one embodiment. Figure 13 This is a schematic diagram of the slender body along its axial direction. The cleaning head 10 in any of the above embodiments includes a heating device for heating the fluid, and a fluid distributor 66 (see reference). Figure 16 The heating device can be installed within the heating unit to heat the fluid before it flows out of the fluid distributor 66, after which the heated fluid flows out of the fluid distributor 66. Since the heating device remains stationary relative to the housing when the brush roller rotates, it must be stationary within the accommodating space. The heating device is in fluid communication with the cleaning fluid supply system and is used to heat the fluid and deliver the heated fluid to at least one set of fluid outlets 15. Placing the heating device inside the roller brush shortens the distance between the heated fluid flowing out of the heating device and the fluid outlets 151 located in the roller brush cylinder 1, reducing heat loss during this process and ensuring that the temperature of the fluid sprayed from the fluid outlets 151 remains constant, thus improving the cleaning effect. The heating device can also be a steam generator to produce steam, which is sprayed through the fluid outlets 151 onto the wiping piece 17 and / or the surface to be cleaned. The structure of the heating device is described in detail below.

[0056] refer to Figure 5-13The heating device is used to heat the fluid. The heating device includes an elongated body 65, a heating element 63, and a flow guiding element 64. The elongated body 65 includes a first end 652 and a second end 653 disposed opposite each other along its length. The elongated body 65 can be of any shape. It can be a long solid column or a long hollow column. No specific limitation is made here.

[0057] refer to Figure 13 The heating element 63 is disposed in the heating region 651 defined by the elongated body 65. As shown in the embodiment, the heating region 651 may only occupy a portion of the elongated body 65. In other embodiments, the heating region 651 may cover the entire elongated body 65. The heating element 63 may be an electric heating element, fixed to the heating region 651 of the elongated body 65 by means of adhesive or other methods. The heating element 63 may also be directly etched onto the elongated body 65; the etching process will not be detailed here. When the elongated body 65 includes an outer wall and an inner wall 16, the heating element 63 may be disposed on the outer wall or the inner wall 16 of the elongated body 65, depending on the shape of the elongated body 65 and actual requirements.

[0058] refer to Figure 8 and 9 At the same time, refer to Figure 7 The flow guiding element 64 guides the fluid through the heating zone 651 and delivers it to at least one set of outlets 62. The flow guiding element 64 can be made of rubber, plastic, or other heat-insulating materials; there are no limitations here. A flow channel is defined within the flow guiding element 64, through which the fluid is heated. When the heating element 63 is in direct contact with the flow guiding element 64, the elongated body 65 can be composed of heat-insulating material, allowing most of the heat generated by the heating element 63 to heat the fluid. When the heating element 63 is disposed outside the elongated body 65, transferring heat to the flow guiding element 64 through the elongated body 65, the elongated body 65 can be made of a material with good thermal conductivity, such as copper, aluminum, or solid thermally conductive silicone; there are no further limitations here.

[0059] refer to Figure 5-9In the embodiment shown in Figures 12-13, the elongated body 65 has a cylindrical structure that defines an accommodating space, within which at least a portion of the flow guiding element 64 is disposed. As shown, the flow guiding element 64 has a cylindrical structure, and a flow guiding channel 641 is provided on the surface of the flow guiding element 64 corresponding to the position of the heating area 651. To improve heating efficiency, the flow guiding channel 641 has a groove-like structure, which cooperates with the inner wall 16 of the elongated body 65 to form a sealed channel. In this way, the fluid can directly contact the heating element 63 or the elongated body 65, resulting in higher heating efficiency. The flow guiding channel 641 includes a first channel 642 and a second channel 643 that communicates with and is disposed downstream of the first channel 642. At least a portion of the first channel 642 extends in a bent direction along its length. This bent extension can be a meandering extension or a spiral extension. This arrangement can effectively improve heating efficiency. At least a portion of the second channel 643 extends along the length direction of the elongated body 65. At least a portion of the second channel 643 corresponds to the outlet 621, and the fluid in the second channel 643 is discharged through the outlet 621. (Reference) Figure 12 and 13 The elongated body 65 is provided with at least one set of liquid outlets 62, which includes multiple liquid outlets 621. These multiple liquid outlets 621 are spaced apart between the first end 652 and the second end 653. This arrangement of the liquid outlets 621 effectively ensures uniform liquid flow along the length of the elongated body 65. To ensure relatively uniform liquid flow from each liquid outlet 621, the inlet of the second channel 643 is generally positioned at the midpoint corresponding to one set of liquid outlets 62.

[0060] Continue to refer to Figure 12 and 13 When the elongated body 65 is cylindrical, to ensure uniform liquid discharge along its circumferential direction, the elongated body 65 includes multiple sets of liquid outlets 621, which are spaced apart along the width direction (circumferential direction) of the elongated body 65. Of course, in other embodiments, when the elongated body 65 has other shapes, multiple sets of liquid outlets 621 can also be provided along its width direction to ensure uniform liquid discharge. When there are multiple sets of liquid outlets 621, multiple parallel second channels 643 are correspondingly provided, each second channel 643 corresponding to one set of liquid outlets 621. Referring to the figure, when the cylindrical elongated body 65 is provided with two sets of liquid outlets 621, the second channel 643 includes a parallel left flow channel and a right flow channel, which are respectively located on both sides of the first channel 642 along the width direction of the elongated body 65. Figure 9 The heating device also includes a liquid inlet 61, which is disposed on the flow guiding element 64.

[0061] refer to Figure 7 and 12The heating area 651 along the direction of gravity is located at the lower end of the slender body 65, and the flow guiding element 64 is located above the heating area 651. In this way, during the operation of the heating device, the fluid in the flow guiding channel 641 will adhere closely to the heating area 651 due to gravity. Even if the flow rate in the flow guiding channel 641 is insufficient, the liquid will still be in full contact with the heating area 651 to ensure the heating effect of the liquid.

[0062] Since the heating device (or fluid distributor) does not rotate with the brush roller, the fluid discharged from the heating device enters the annular cavity and is then discharged. Therefore, special structures need to be designed within the annular cavity to ensure that the liquid can smoothly discharge from the fluid outlet 151. To address this problem, this application provides the following solution. (Reference) Figure 16-19 , Figure 16 This is a schematic diagram of the structure of the built-in fluid distributor in one embodiment of the brush roller. Figure 17 This is a schematic diagram of the structure of the built-in heating element in one embodiment of the brush roller. Figure 18 This is a schematic diagram of a structure in one embodiment where a liquid collection chamber is provided on the inner wall of the roller brush cylinder. Figure 19 This is a schematic diagram of a structure in one embodiment where a liquid collection chamber is provided on the inner wall of the roller brush cylinder. Also refer to... Figure 10 , 11 In some embodiments, 13 and 14, a fluid distributor 66 is provided in the accommodating space. The fluid distributor 66 is in fluid communication with the supply pipeline. The fluid distributor 66 includes a plurality of liquid outlets 621 arranged at intervals along the axial direction of the brush roller. The accommodating space of the roller brush cylinder 1 is provided with a plurality of liquid collection chambers 13 corresponding to the liquid outlets 621. The plurality of liquid collection chambers 13 are arranged at intervals along the axial direction of the brush roller. The roller brush cylinder 1 is provided with at least one set of fluid outlets 15. The liquid flowing out from the liquid outlets 621 is collected by the liquid collection chambers 13 and discharged through the fluid outlets 151. The liquid outlets 621 are arranged at intervals along the axial direction of the brush roller. The liquid sprayed from each liquid outlet 621 is collected by the corresponding collection chamber 13 and discharged through the fluid outlet 151. This ensures that the cleaning liquid is discharged evenly along the axial direction of the brush roller. At the same time, the interval distribution of the collection chambers 13 can effectively ensure that the liquid sprayed from the liquid outlet 621 is collected in the collection chamber 13 and discharged as soon as possible, avoiding a large amount of cleaning liquid accumulating in the internal space of the brush roller. The collection chamber 13 can be defined by a flow-blocking structure 131 protruding outward from the inner wall 16 of the roller brush body 1. The flow-blocking structure 131 can define an independent space with sealed sides. The flow-blocking structure 131 can also be a baffle structure with a fluid inlet, which prevents the fluid at this point from rotating relative to the roller brush body 1.

[0063] refer to Figure 6 and 7When the fluid distributor 66 is stationary relative to the housing, i.e., when the roller brush cylinder 1 moves, the fluid distributor 66 remains stationary. At this time, the outlet 621 moves relative to the roller brush cylinder 1. If the liquid is sprayed directly into the containment space, it is difficult to discharge the fluid through the fluid outlet 151 using centrifugal force. In one embodiment, the discharge frequency of the outlet 621 can be controlled by a control program, so that the discharge frequency of the outlet 621 corresponds to the rotation speed of the roller brush cylinder 1. That is, when the collection chamber 13 rotates to the area corresponding to the outlet 621, the fluid distributor 66 is controlled to spray fluid to ensure that at least a portion of the fluid is collected by the collection chamber 13. When the collection chamber 13 rotates to other positions, the fluid distributor 66 is controlled to stop spraying fluid. Using the above control method, it is possible to effectively prevent most of the fluid from accumulating in the containment space and being unable to be discharged through the fluid outlet 151.

[0064] refer to Figure 6 , 7 In another embodiment, 10 and 11, since the collection chamber 13 rotates together with the brush cylinder 1, the liquid ejected from the outlet 621 may not be collected by the collection chamber 13. Therefore, the collection chamber 13 is an annular groove extending along the circumferential direction of the brush roller. During the rotation of the brush roller, the annular groove corresponds to the outlet 621, meaning that most or even all of the fluid ejected from the outlet 621 is collected by the annular groove. (See reference...) Figure 18-19 The arrow in the figure indicates the direction of brush roller rotation. At least one flow-blocking structure 131 is provided within the annular groove. The flow-blocking structure 131 is used to block at least a portion of the fluid from moving relative to the brush cylinder 1, causing at least a portion of the fluid to accumulate near the fluid outlet 151. Along the direction of brush roller rotation, the flow-blocking structure 131 is generally located downstream of the fluid outlet 151. In this way, the flow-blocking structure 131 can block at least a portion of the fluid, causing the fluid to rotate with the brush roller. This portion of the fluid will flow out from the fluid outlet 151 due to centrifugal force. The flow-blocking structure 131 can be a baffle extending along the axial direction of the brush roller, directly closing the annular groove and preventing the fluid from freely circulating along the annular groove. The flow-blocking structure 131 can also be a block surrounding the fluid outlet 151. This block does not completely close the annular groove, but only blocks a portion of the fluid, keeping it near the fluid outlet 151, while the remaining fluid can flow around the block. The advantage of this design is that it avoids most of the fluid accumulating at the fluid outlet 151, which cannot completely remove the fluid, causing excess fluid to overflow into the containment space and resulting in energy loss.

[0065] refer to Figure 10 and 11In one embodiment, to achieve an axial annular groove, the brush cylinder 1 needs to be manufactured in two parts: a first cylinder 11 and a second cylinder 12. Each part includes at least one semi-circular groove. After manufacturing, they are fixed together by bolts or other fixing methods to form a complete annular groove. In this embodiment, the annular groove is defined by two annular plates that protrude relative to the inner wall 16 of the brush cylinder 1. In other embodiments, the annular groove can also be formed by the inner wall 16 of the brush cylinder 1 being recessed inward. Of course, other mature processes can also be used to form spaced grooves within a hollow brush cylinder 1.

[0066] Furthermore, in order to ensure that most of the liquid discharged from the outlet 621 is collected in the collection chamber 13, the outlet 621 of the fluid distributor 66 can also extend into the annular groove.

[0067] refer to Figure 20-22 Also refer to 16 and 17. Figure 20 This is a schematic diagram of a structure in one embodiment where a guide groove is provided on the inner wall of the roller brush cylinder. Figure 21 This is a schematic cross-sectional view of the brush cylinder along the axial direction in one embodiment. Figure 22 This is a schematic cross-sectional view of the roller brush cylinder along the axial direction in another embodiment. To address the issue of fluid discharge from the annular cavity, this application also provides another cleaning head 10. The cleaning head 10 is equipped with a brush roller, which is installed in an installation space and can rotate around its own axis. A wiping element 17 is provided on the outer periphery of the roller brush cylinder 1. The wiping element 17 rotates substantially synchronously with the brush roller to clean the surface to be cleaned. The interior of the roller brush cylinder 1 defines an accommodating space. A fluid distributor 66 is disposed within the accommodating space and is in fluid communication with a supply pipeline. The fluid distributor 66 includes a plurality of outlets 621 spaced apart along the axial direction of the brush roller. The fluid distributor 66 can be a long and narrow pipeline with a plurality of outlets 621 evenly distributed on it. The inner wall 16 of the roller brush cylinder 1 is provided with at least one guide groove 14, and each guide groove 14 is provided with at least one fluid outlet 151. Liquid flowing out from the outlet 621 enters the guide groove 14 and is discharged through the fluid outlet 151. The flow channel 14 is formed by the recess of the inner wall 16, and the fluid can flow into the flow channel 14 when it flows on the inner wall 16.

[0068] refer to Figure 20 and 22In one embodiment, the guide groove 14 extends circumferentially along the brush cylinder 1, and the fluid outlet 151 is located at the end of the guide groove 14. The fluid within the guide groove 14 rotates with the brush cylinder 1 at the end of the guide groove 14. Due to centrifugal force, the fluid flows out from the fluid outlet 151 at the end. Along the rotation direction of the brush roller, the guide groove 14 includes opposing front and rear ends; that is, the direction extending from the rear end to the front end is the rotation direction of the brush roller. The fluid outlet 151 is preferably located at the rear end, where the fluid first accumulates and then is discharged from the fluid outlet 151 under centrifugal force. When the fluid outlet 151 is located at the front end, the fluid typically accumulates in the guide groove 14 before flowing out from the fluid outlet 151 due to centrifugal force.

[0069] refer to Figure 20 and 22 In another embodiment, the guide groove 14 extends both circumferentially and axially along the brush cylinder 1. In this case, the fluid outlet 151 in the guide groove 14 can be located at any position within the guide groove 14. Since the guide groove 14 extends axially while simultaneously extending axially, and the brush roller rotates circumferentially, the fluid within the guide groove 14 experiences a force from the sidewall of the guide groove 14 as it flows along the guide groove 14, causing the fluid flow to slow down and not synchronize with the rotation of the brush roller. Under centrifugal force, some fluid is discharged at the fluid outlet 151. Multiple guide grooves 14 can be provided, and each guide groove 14 can have at least one fluid outlet 151. Alternatively, the fluid outlet 151 can be located at the rear end and / or the rear end of the guide groove 14. When the fluid outlet 151 is located between the front end and the rear end of the guide channel 14, a flow-blocking structure 131 can be set at the position corresponding to the fluid outlet 151. The flow-blocking structure 131 is configured to gather at least a portion of the fluid near the fluid outlet 151, so that the portion of the fluid can be discharged from the fluid outlet 151 due to centrifugal force.

[0070] refer to Figure 22 In another embodiment, the guide groove 14 is spirally arranged on the inner wall 16 of the brush cylinder 1. The inner wall 16 of the brush cylinder 1 may have one guide groove 14 extending from one end of the brush roller to the other. Alternatively, the inner wall 16 of the brush cylinder 1 may have multiple substantially parallel guide grooves 14. The location and some related structures of the fluid outlet 151 in the guide groove 14 can be the same as in the above embodiments, and will not be described in detail here.

[0071] refer to Figure 20The roller brush cylinder 1 is provided with multiple sets of fluid outlets 151, which are spaced apart along the circumferential direction of the roller brush cylinder 1. Referring to the figure, the embodiment shown in the figure has two sets of fluid outlets 151, wherein each set of fluid outlets 151 extends along the axial direction of the brush roller, and the two sets of fluid outlets 151 are symmetrically arranged on opposite sides of the roller brush cylinder 1 in the radial direction. With this arrangement, the fluid can be distributed relatively evenly. In order to make the fluid sprayed by the fluid distributor 66 more uniform, the fluid distributor 66 includes at least two sets of liquid outlets 621, which are spaced apart along the circumferential direction of the roller brush cylinder 1.

[0072] refer to Figure 6 , 7 In some embodiments, 10 and 11, the heating device remains stationary while the brush roller rotates. At this time, the outlet 621 of the heating device is in fluid communication with the fluid outlet 151 located on the roller brush cylinder 1. The two ends of the heating device are respectively mounted on the first fixing part 34 and the second fixing part 41. Alternatively, the heating device can be suspended and fixed to the first end cap 3. The heating device remains stationary relative to the housing when the brush roller rotates around its own axis. That is, the heating device remains stationary when the brush roller is working. An annular cavity is defined between the heating device and the roller brush cylinder 1. The heated fluid enters the annular cavity and is discharged from the fluid outlet 151 of the roller brush cylinder 1. The roller brush cylinder 1 includes at least one set of fluid outlets 15, which are spaced apart along the axial direction of the brush roller. This spaced arrangement can be either a line formed by multiple fluid outlets 151 parallel to the axis of rotation, or a line formed by multiple fluid outlets 151 rotating around the brush roller, i.e., multiple fluid outlets 151 extending simultaneously along the axial and circumferential directions of the brush roller in a spiral shape.

[0073] refer to Figure 23 and 24 , Figure 23 This is a schematic cross-sectional view of the brush cylinder along the axial direction in another embodiment. Figure 24 This is a schematic cross-sectional view of the brush roller along the axial direction in one embodiment. The arrows in the figure indicate the direction of fluid flow. In other embodiments, Figure 23The heating device shown can rotate with the brush roller and heat the brush roller. The heating device is located on the inner wall 16 of the roller brush cylinder 1 and rotates with the brush roller. The heating device is adhered to or fixed to the inner wall 16 of the roller brush cylinder 1 using an etching process. A fluid distributor 66 can also be provided in the accommodating space or on the roller brush cylinder 1. The fluid distributor 66 is used to distribute fluid to the wiping piece 17 or the surface to be cleaned. In a further embodiment, the roller brush cylinder 1 is provided with a first fluid channel 19, and the inner wall 16 corresponding to the first fluid channel 19 is provided with a heating device. The heating device heats the roller brush cylinder 1 while simultaneously heating the fluid entering the first fluid channel 19. In this embodiment, the heating device serves to both heat the brush roller and heat the fluid. The fluid can directly enter the first fluid channel from the second fluid channel in the end cap.

[0074] refer to Figure 24 In other embodiments, the two ends of the heating device are respectively mounted on the first fixing part 34 of the first end cover 3 and the second fixing part 41 of the second end cover 4. The roller brush cylinder 1 is provided with a first fluid channel 19, and the second rotating part 43 is provided with a second fluid channel 44 connected to the first fluid channel 19. The outlet 621 of the heating device is in fluid communication with the second fluid channel 44. The heated fluid passes through the second fluid channel 44 and the first fluid channel 19, and is discharged through the fluid outlet 151 provided on the roller brush cylinder 1. In this embodiment, the main function of the heating device is to heat the fluid.

[0075] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A cleaning head, characterized in that, include A brush roller is mounted on the housing of the cleaning head; The brush roller is rotatable about its own axis; the brush roller includes: a roller brush body, a first end cap and a second end cap; The roller brush cylinder body defines an accommodating space; the roller brush cylinder body is provided with a fluid outlet; The first end cap and the second end cap are arranged opposite each other along the axial direction of the roller brush cylinder; A heating device is disposed on the first end cap; at least a portion of the heating device is disposed within the accommodating space; the heating device remains stationary when the roller brush cylinder rotates. The first end cap is also provided with a handle, which is provided with a liquid inlet pipe for liquid to enter the accommodating space and a power supply line for power to enter the accommodating space; The outer periphery of the roller brush cylinder is provided with a wiping element; the fluid outlet distributes the heated fluid to the wiping element; The first end cap includes a first fixing part, a first bearing is provided on the outer periphery of the first fixing part, a first rotating part is provided on the outer periphery of the first bearing, and a first snap-fit ​​structure is provided on the first rotating part. The first snap-fit ​​structure cooperates with a third snap-fit ​​structure located on the roller brush cylinder to realize the disassembly / assembly between the roller brush cylinder and the first end cap. The second end cap includes a second fixing part, a second bearing is provided on the outer or inner periphery of the second fixing part, and a second rotating part is provided on the inner or outer periphery of the second bearing; The heating device is mounted on the first end cap and the second end cap at its two ends, respectively.

2. A cleaning head, characterized in that, include A brush roller is mounted on the housing of the cleaning head; The brush roller is rotatable about its own axis; the brush roller includes: a roller brush body, a first end cap and a second end cap; The roller brush cylinder body defines an accommodating space; the roller brush cylinder body is provided with a fluid outlet; The first end cap and the second end cap are arranged opposite each other along the axial direction of the roller brush cylinder; A heating device is disposed on the first end cap; at least a portion of the heating device is disposed within the accommodating space; the heating device remains stationary when the roller brush cylinder rotates. The first end cap is also provided with a handle, which is provided with a liquid inlet pipe for liquid to enter the accommodating space and a power supply line for power to enter the accommodating space; The outer periphery of the roller brush cylinder is provided with a wiping element; the fluid outlet distributes the heated fluid to the wiping element; At least one liquid collection chamber is provided within the accommodating space of the roller brush cylinder; The liquid collection chamber is defined by a flow-blocking structure protruding outward from the inner wall of the roller brush cylinder. After the liquid is collected in the corresponding liquid collection chamber, it is discharged through the fluid outlet.

3. The cleaning head as described in claim 1 or 2, characterized in that, An annular cavity is defined between the heating device and the roller brush cylinder. Fluid flowing out of the outlet of the heating device enters the annular cavity and is discharged through the fluid outlet of the roller brush cylinder.

4. The cleaning head as described in claim 1 or 2, characterized in that, The heating device includes: An elongated body, the elongated body comprising a first end and a second end disposed opposite to each other along its length; A heating element is disposed in the heating area defined by the elongated body; A flow guiding element is used to guide the fluid through the heating zone and deliver it to the at least one set of liquid outlets; The elongated body is provided with at least one set of liquid outlets, the set of liquid outlets including multiple liquid outlets, which are distributed at intervals between the first end and the second end.

5. The cleaning head as described in claim 4, characterized in that, The flow guiding element is disposed inside the elongated body, and the heating element is disposed outside the elongated body.

6. The cleaning head as described in claim 1 or 2, characterized in that, At least part of the liquid inlet pipe is substantially coaxial with the rotation axis of the roller brush cylinder.

7. The cleaning head as described in claim 1, characterized in that, The roller brush cylinder has at least one liquid collection chamber inside its accommodating space. The liquid is collected in the corresponding liquid collection chamber and then discharged through the fluid outlet.

8. The cleaning head as described in claim 1, characterized in that, The roller brush cylinder is provided with a first fluid channel, and the second end cap is provided with a second fluid channel that is connected to the first fluid channel. The outlet of the heating device is in fluid communication with the second fluid channel. The heated fluid passes through the second fluid channel and the first fluid channel and is discharged through the fluid outlet provided on the roller brush cylinder.

9. The cleaning head as described in claim 2, characterized in that, The first end cap includes a first fixing part, a first bearing is provided on the outer periphery of the first fixing part, a first rotating part is provided on the outer periphery of the first bearing, and a first snap-fit ​​structure is provided on the first rotating part. The first snap-fit ​​structure cooperates with a third snap-fit ​​structure located on the roller brush cylinder to realize the disassembly / assembly between the roller brush cylinder and the first end cap.

10. The cleaning head as described in claim 2, characterized in that, The second end cap includes a second fixing part, a second bearing is provided on the outer or inner periphery of the second fixing part, and a second rotating part is provided on the inner or outer periphery of the second bearing.

11. The cleaning head as described in claim 2, characterized in that, The heating device is mounted on the first end cap and the second end cap at its two ends, respectively.

12. The cleaning head as described in claim 2, characterized in that, The roller brush cylinder is provided with an annular groove, and at least one flow-blocking structure is provided in the annular groove. The flow-blocking structure is used to block at least a portion of the fluid from moving relative to the roller brush cylinder, so that at least a portion of the fluid accumulates at the fluid outlet.

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