The present system and method relate to hard surface cleaning apparatuses. More specifically, the present system and method relate to cleaning apparatuses having rotating cleaning heads.
Hard surface cleaning apparatuses vary in both shape and design. However, many traditional solid surface cleaning apparatuses include a water source that provides water and cleaning agents to high-pressure jets. The high-pressure jets impart a force on the surface, dislodging unwanted debris and material.
Many solid surface cleaning apparatuses include a rotating jet system. According to these traditional systems, one or more jets are positioned at the end of an arm or series of arms. The arms are coupled to a rotating coupler, which allows the arms to spin relative to the rest of the apparatus. According to many traditional systems, the high-pressure jets at the end of the arms are placed at extreme angles relative to the surface being cleaned. In this position, they impart a horizontal force component on the arms, thereby inducing rotation of the arms about the rotating coupler. However, traditional apparatuses are often unable to clean recessed areas on solid surfaces and fail to provide satisfactory cleaning swaths. The inability to clean recessed areas on solid surfaces is partially attributed to the high angle of the pressure jets. Many commercially used cleaning processes employ vacuum and high velocity water streams do dislodge and remove debris. A more efficient apparatus will fulfill a long felt need within the industry.
Specifically, it is often necessary to utilize lower pressures to prevent damage to more delicate surfaces. When traditional systems are used at low pressures, the jets fail to produce the rotation necessary for efficient cleaning. In addition, the extreme angles of the pressure jets are not ideal for dislodging debris. Consequently, the low pressure and extreme angle of the water stream results in inadequate cleaning at low pressures. They are therefore unable to clean delicate surfaces adequately.
Furthermore, traditional systems often incorporate a vacuum system designed to remove and capture dislodged debris and/or soiled water. In general, there is little or no means for controlling the airflow within the housing and across the surface being cleaned. Consequently these prior devices result in ponding of the water on the work surface under the housing. Ponding occurs when the suction throughout the housing is insufficient or misdirected. The water from the high-pressure jets as well as the dislodged debris gathers in pools, often in the center of the apparatus or on an edge where suction is inadequate. Ponding results in less than satisfactory swaths.
The hard surface cleaning industry would greatly benefit from an improved cleaning apparatus that overcomes the shortcomings discussed above. The present invention provides such and apparatus.
According to one exemplary embodiment, an apparatus for cleaning solid surfaces includes a housing configured to substantially encapsulate a surface being cleaned, a vacuum port traversing the housing, a rotating coupler assembly rotatably secured to the housing, an impeller coupled to the rotating coupler, at least one fluid jet coupled to the impeller, and at least one air pathway configured to allow induced air to pass by the impeller blades to rotatably drive them.
According to one exemplary embodiment, the at least one air pathway includes a plurality of air induction ports formed in the housing adjacent to the impeller, wherein the air induced from the plurality of air induction ports is configured to rotate the impeller, thereby rotating the rotating coupler.
According to one alternative embodiment, the at least one air pathway includes a water and/or air pickup path leading to a system vacuum hose. The use of air to drive the rotation of the rotating coupler allows for a more perpendicular fluid jet angle, which improves surface cleaning at lower pressures. In particular, the fluid jets may be positioned at a negative angle relative to the surface and the direction of rotation.
According to several embodiments, the present system incorporates interior baffles. The baffles are configured to direct and guide the airflow within the apparatus. According to various embodiments, the baffles, increase the flow of air across the impeller, reduce drying times, reduce ponding, and force air onto the surface being cleaned.
The accompanying drawings illustrate various embodiments of the present system and method and are a part of the specification. The illustrated embodiments are merely examples of the present apparatus and method and do not limit the scope thereof.
Throughout the drawings, identical reference numbers identify similar elements or features. The sizes and relative positions of elements in the drawings are not necessarily drawn to scale. For example, the shapes of various elements and angles are not drawn to scale, and some of these elements are arbitrarily enlarged and positioned to improve drawing legibility. Further, the particular shapes of the elements as drawn, are not intended to convey any information regarding the actual shape of the particular elements, and have been solely selected for ease of recognition in the drawings.
An air driven solid surface cleaning apparatus is disclosed herein, according to various exemplary embodiments. Specifically, one exemplary apparatus includes an air induction pathway, one or more air induction ports in its housing, and an impeller secured to a rotating coupler assembly. Induced air imparts a rotational force on the fluid jet assembly, allowing for a more perpendicular fluid jet angle and improved surface cleaning at lower pressures. Similarly, according to one alternative embodiment, the apparatus includes an impeller assembly within an air return pathway. Embodiments and examples of the present exemplary systems and methods are described in detail below.
Unless otherwise indicated, all numbers expressing quantities, measurements, and so forth used in the specification and claims are to be understood as being modified in all instances by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may be modified and configured for specific application. Specifically, the angles of air induction ports and water injection mechanisms may be modified to increase efficiency as necessary.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present system and method. It will be apparent, however, to one skilled in the art, that the present method may be practiced without these specific details. Reference in the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearance of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment.
Unless the context requires otherwise, throughout the specification and claims which follow, the word “comprise” and variations thereof, such as, “comprises” and “comprising” are to be construed in an open, inclusive sense, that is as “including, but not limited to.”
The following description is presented to illustrate and describe several embodiments of the present exemplary system and method; it is not intended to limit the system and method to any exact form disclosed in conjunction with the various embodiments.
Several exemplary apparatuses utilizing induced air are described herein. According to one embodiment, induced air drives the rotation of both an impeller and one or more fluid jets; wherein the fluid jets are positioned at an angle nearly tangential to the surface. Subsequently, a description of an apparatus utilizing a vacuum to rotationally drive an impeller by pulling soiled water and air from the floor through the impeller is provided. Finally, modifications of these embodiments are provided wherein baffles are incorporated to direct airflow within the apparatuses. Various modifications of each of the above embodiments are described in detail. Specifically, various orientations of the fluid jets are discussed in conjunction with each of the exemplary embodiments.
As illustrated in
Additionally, as illustrated in
In contrast to the traditional apparatuses, which include many of the components described above, the present exemplary surface cleaning apparatus (100) also incorporates an impeller (150) attached to the rotating coupler (130). According to the exemplary embodiment illustrated in
According to one embodiment of the present system and method, one or more air induction ports (160) are positioned above the impeller (150). The air induction ports (160), according to one exemplary embodiment, extend through the outer housing (110) of the apparatus (100).
According to one exemplary embodiment described in detail below, the inclusion and placement of air induction ports (160) in the outer housing (110) of the cleaning apparatus (100) allows induced air to drive the impeller (150). The vacuum source (125) creates suction within the vacuum space (120); this vacuum induces air through the air induction ports. The air passing through the air induction ports causes the impeller (150) to rotate, which in turn causes the rotating coupler (130) to rotate. The fluid jets (140) are directly coupled to the rotating coupler; consequently, if the rotating coupler rotates, they also rotate. Thus, the induced air causes the fluid jets (140) to rotate.
Prior art systems include fluid jets configured to produce the rotational force. In the prior art, fluid jets are positioned at a relatively high angle in order to create a sufficient horizontal force to drive the rotating arm. In the present exemplary cleaning apparatus (100), induced air, through the impeller and rotating coupler, rotatably drives the fluid jets (140). Consequently, the fluid jets (140) may be positioned at angles more efficient for cleaning.
Specifically, as previously mentioned, traditional spinning surface cleaners orient fluid jets at an extreme angle to provide the rotational force necessary. The extreme angles necessary in the prior art result in an overall less efficient cleaning system. However, due to the placement and positioning of the air induction ports (160) and the air driven impeller (150) in the present exemplary apparatus (100), rotational force derived from the fluid jets (140) is unnecessary. Consequently, the fluid jets (140) of the present exemplary cleaning apparatus (100) can be oriented to provide enhanced agitation for cleaning, as opposed to providing rotational force. Specifically, the fluid jets (140) of the present apparatus may be oriented, according to one exemplary embodiment, at between approximately 80 and 90 degrees relative to the surface (115). Water streams impacting the floor (115) tangentially, or nearly tangentially, dislodge debris more efficiently then the extreme angle of impact utilized in the prior art.
According to one exemplary embodiment, the outer housing (110) creates a substantial seal around a section of the floor (115). The vacuum source (125) creates a vacuum in the space (120) between the inner housing (170) and the outer housing (110). This vacuum causes air to flow from the outside of the cleaning apparatus (100) through the air induction ports (160), past the impeller (150), down the bottom of the inner housing (110), into the vacuum space (120), and finally into the vacuum source (125). The air stream (labeled ‘Air Stream’) is illustrated as a dashed line in
According to one exemplary embodiment, the vacuum created by the vacuum source (125) induces air through the air induction ports (160). As the air stream passes the impeller (150), a force is imparted on the surface of the blades of the impeller (150), causing the impeller to spin. As the impeller (150) rotates, a rotating coupler (130) begins to spin. As the rotating coupler (130) rotates, coupled fluid jets (140) will also rotate at a high velocity.
According to an alternative embodiment, the rotational propulsion created by the induced air is supplemental to an already existing force created by the high-pressure water stream emitted from the fluid jets (140). According to another exemplary embodiment, the use of induced air to provide the rotational propulsion allows the fluid jets (140) to be positioned at an angle closer to 90° than in the prior art. According to one embodiment, the fluid jets (140) are positioned at an angle slightly less than 90° in the direction of rotation. This “negative” angle allows lower pressures to be used for the cleaning and rinsing solutions, while still effectively cleaning the surface. Lower pressures are especially desirable when cleaning delicate surfaces, as they will significantly reduce the risk of damaging the surface.
According to an alternative embodiment, illustrated in
Moreover, the introduction of air via the air induction ports (160) provides positive air induction on the surface being cleaned. After the air stream (see
Referring now to
Therefore, according to various embodiments, a vacuum source may induce air from induction ports (160) or directly pull air and water from the floor (115) to drive an impeller (150). Regardless, the advantage obtained is that the rotational force necessary for effective cleaning is no longer dependent on the fluid jets (140). Thus, the fluid jets (140) may be positioned at angles not possible in the prior art. These angles, such as a negative angle (see
Both the placement and geometry of the baffles (600, 610) are influenced by a variety of factors. For example, the baffles (600, 610) may be configured to prevent the air stream from disrupting the stream of water emitted from the fluid jets (140). Alternatively or additionally, the interior baffles (600, 610) may direct the air across the floor (115) resulting in increased cleaning efficiency. Moreover, the placement and geometry of the baffles (600, 610) may include positioning the baffles so as to minimally impede the spray from the nozzles (140). According to alternative embodiments, the baffles (600, 610) determine the angle at which the air impacts the floor (115) and are configured to facilitate in cleaning or drying the floor (115).
A variety of alternative geometries are possible; for example, a conic section, a rectangular profile, or a cylinder baffle may be used. Each of these baffle shapes provides a directed air stream that impacts the floor in a different manner. According to various embodiments, the shape of the baffle (600, 610) may be used to manipulate the streams of water emitted from the various fluid jets (140), dry the floor, facilitate in dislodging debris, and/or cause air to guide dislodged debris into the vacuum source (125).
In conclusion, according to one exemplary embodiment, the cleaning apparatus utilizes induced air to drive the rotation of a rotating coupler, thereby imparting a rotational force on the fluid jet assembly. According to one exemplary embodiment, the present exemplary systems and methods allow for a more perpendicular fluid jet angle and improved surface cleaning at lower speeds. This is accomplished by incorporating a leading edge of spray in the direction of rotation. That is, the water stream is at a negative angle relative to the direction of rotation. Furthermore, because the required rotation is not dependent on the high-pressure emitted from the fluid jets, the apparatus can be used at low water pressures while maintaining high rotational speeds.
The preceding description has been presented only to illustrate and describe the present method and system. It is not intended to be exhaustive or to limit the present system and method to any precise form disclosed. Many modifications and variations are possible in light of the above teaching.
The foregoing embodiments were chosen and described in order to illustrate principles of the system and method as well as some practical applications. The preceding description enables others skilled in the art to utilize the method and system in various embodiments and with various modifications, as are suited to the particular use contemplated. It is intended that the scope of the present exemplary system and method be defined by the following claims.
This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 60/992,030 filed Dec. 3, 2007 which is titled “Air Induction Hard Surface Cleaning Tools with an Internal Baffle”. The above-mentioned application is incorporated herein by reference in its entirety.
Number | Date | Country | |
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60992030 | Dec 2007 | US |