TW200916038A - Improved airflow system & apparatus and method for airflow system - Google Patents

Abstract

An airflow system enhances airflow in a hand-drying apparatus which expels a stream of sterilised, hot air for drying of hands. Inside the apparatus, the airflow is decelerated by one or more filters. Therefore, the system is provided with an airflow-pathway that is progressively smaller along its pathway in respect of flowthrough cross-section. The airflow is enhanced by flowing initially through a larger part of the airflow-pathway, and subsequently through a smaller part of the airflow-pathway after which the airflow exits the apparatus. To enhance the airflow, a universal commutator motor is used to drive an appliance that provides air movement. The motor comprises magnetic field generating means, a rotating armature adapted for rotational motion in operative association with the magnetic field. A ratio of magnetic field strength at the armature to the magnetic field strength within the magnetic field is less than about 1 to 1.

Description

200916038 IX. INSTRUCTIONS: [Technical field to which the invention belongs] Related Applications This application is based on the name of Alpha Global Holdings Pty Ltd. 5 Please apply for the Australian Provisional Patent Application No. 2007901255 (Application for March 12, 2007) The priority of "Improved Airflow Systems and Devices and Methods for Airflow Systems" is incorporated herein by reference in its entirety for all purposes.

FIELD OF THE INVENTION The present invention relates to several airflow systems and devices, and to methods for airflow systems, and more particularly to appliances designed to generate air flow, for example, tx»10 is produced to produce a sterile air (sterilised) The air dryer is used to purify the drying conditions. In one form, the present invention is suitable for use in a hand dryer. For convenience, the present invention will be described below using the following apparatus: a sterilizing mobile phone that is specially used to dry the hot air of the palm of the hand. Here, the airflow within the device can be decelerated by - or more filters that allow the airflow to pass. However, it should be understood that the invention is not limited to this use. BACKGROUND OF THE INVENTION In the present patent specification, the "inventor" may be referred to in the singular, and may refer to the inventor of the present invention, or all of the inventors. In the following prior art content The inventor's term will be used. The mobile phone can be used to radiate a hot or warm airflow to dry the user's hand. ¥ ° Some hand dryers are commonly used in public toilets and in environments such as medical care. It is desirable to maintain maximum cleanliness from exposure to potential sources of bacteria such as paper towels, towels, or toilet paper. It is often assumed that the use of such hand dryers will be more hygienic. In contrast, contrary to the assumptions, the present invention has found prior art for hand The device is actually a mechanism for spreading fine bacteria. The heating flow from the prior art hand-held device is itself filled with airborne bacteria. The mobile phone absorbs air from the bacteria-containing atmosphere of the toilet and flows out of warm and bacteria-laden air. User's wet hand. Applicant's corresponding international patent application PCT/AU2005/0018〇3! #u(^ Panache Global Holdings Pty Ltd 10 Is to place a plurality of filters in the path of the airflow through the dryer, each filter has the function of killing and/or removing bacterial particles, or spreading beneficial substances into the airflow, but the problem is that the mesh It will slow down the airflow of the device, because the air must pass through a large number of meshes that will block the airflow. For this problem, at least relying on the dryer, a larger 15 more powerful fan motor wire provides higher Torque and faster fan speed. In this prior art, if the designer wanted a faster airflow rate, a faster, more powerful fan motor would be preferred. However, only a larger fan motor would be used. Solving the problem will have the following difficulties, for example: First, it must be remembered that the air around the public toilet is often filled with airborne fine bacteria. Therefore, 'not limited to theory' is believed to use a larger fan motor to produce stronger The dryer air intake rate. The inventors believe that a stronger dryer intake air rate means that the number of bacteria entering the dryer will be greater. Therefore 'more powerful motor (related to the inhalation rate) This is not the most ideal solution for this problem. 200916038 Second, the faster fan motor will be more expensive, and the internal loss will be more so that the service life of the motor will be shorter. Third, the larger fan motor works. It will be hotter and more prone to more noise. 5 The fourth 'faster fan motor will be larger, the motor will easily fail due to overheating' and a larger dryer housing is needed to accommodate a larger motor. The inventors have found that the carbon brush life may not be sufficient to meet the specifications of the appliance in motors that can be used in appliances suitable for air flow. Furthermore, the inventors have found that the speed of motors for such appliances may be too low to Overcome the back pressure that may be accumulated. The inventors have paid particular attention to the use of appliances utilizing the sterilizing filtration system of the Applicant and the obstruction of airflow through the appliance. Further, when applied to an appliance as described above, a commutator for a motor is generally a 'shell type, a commutator. The shell type commutator is generally made of a copper strip and a molding material (for example, Phen〇Hc thermoset moulding material 15). The copper strip can be punched and formed, and then the shape of the copper shell is molded by a thermosetting molding material (for example, a phenol resin as described above). After molding, the copper shell is divided into individual strips or sheets that are needed. This type of commutator is suitable for low and medium operating speeds and low currents. However, for higher speeds and higher currents, individual 20 segments or strips are at risk of moving or lifting. The reason for this effect can be attributed to the fact that the material used to mold the commutator (for example, a thermosetting and equivalent material) may not adhere to copper, as the inventors have discovered, it is essentially mechanical only. Combine. If the commutator strip (c〇mmutat〇r bar) is lifted, moved or twisted by heat or speed, the motor may start to spark or the body may be damaged. At least the motor's carbon brush life may be significantly reduced. There has been an attempt to improve the design of the commutator, as disclosed in U.S. Patent No. 5,491,373 (Cooper et al.), which incorporates a non-conducting ring in the interior core of the device and is in contact with a copper conductor. 5 With regard to the embodiment of the hand dryer, it is preferable to reduce the hand drying time, however this only contributes to one or more of the above disadvantages. With regard to the means for providing air flow, the inventors have found that the attendant problem is that the test and working conditions of the specifications are often reversed. For example, it is required to conduct tests under continuous operation for providing a motor in which air flows in the appliance. Contrary to this, under normal operating conditions of the appliance, the motor may be required to operate at full power for a short period of time (eg, about 3 sec) from a relatively long life expectancy, in other words, to reach full load in a short period of time. . We have also learned that the motor used to cope with the above problems can be modified to operate outside its standard operating range and therefore may fail. 15 The object of the present invention is to overcome or at least reduce one or more problems of the prior art or to provide an improved alternative. In particular, the object of the present invention is to provide at least one improved alternative to the option of providing only a larger fan motor when encountering the problem of one or more screens decelerating the airflow through the hot air hand dryer. 2〇 In this patent specification, the prior art, whether discussed in individual or combined form, should not be considered a recognition of the general knowledge of skilled recipients in the field of sterilization and hand dryers. Excluding the invention, Fanming is a sterilized chess mobile phone that does not use a filter in the path of the internal airflow because such a dryer does not have to cope with the problem of airflow deceleration caused by the filter placed in the flow path of the gas 200916038. SUMMARY OF THE INVENTION This patent specification contains one or more aspects of the present invention. In accordance with a first aspect of the present invention, there is provided a gas flow system designed to enhance airflow in a hand-drying apparatus, the dryer being discharged from a heating member, heated by a heating member Substantially sterilizing, hot air for drying the palm, where the gas flow within the device is decelerated by one or more screens through which the gas stream passes, wherein the system is downstream of the heating member 10 There is a flow cross section of the flow cross section that gradually becomes smaller along the passage, whereby, in use, the air flow passes through a larger portion of the air flow passage through the initial flow and subsequently It is reinforced by a smaller portion of the airflow path and then the airflow exits the device. 15 The air flow path may include at least a tapered portion. This taper can be selectively changed by the user. The taper of the airflow path can be selectively varied by the user by replacing an alternate airflow path device having a different size (preferably selected from a sequence of different taper paths). 2〇 The airflow path can contain several non-tapered sections. The dryer designed to be used in the system can include a fully sealed outer casing including a fan-casing containing a fan. In an exemplary embodiment, all of the airflow passes through the initial main-inlet-means on the through-the-shell to enter the 200916038»outer device (5) alpha and all airflows then pass through The most '.winter main air intake member on the wind shoulder sleeve enters the fan casing, wherein the initial main air intake member is larger than the final main air intake member, whereby the air flow is initially flowed in use Reinforced by the larger initial primary air intake and subsequently by the smaller, lowermost five primary air intake. The flow cross section of the larger initial primary money member and the smaller final primary air intake member may have a ratio of about 1.38. The fan can be a dual fan that includes two fan halves each designed to draw airflow into the fan casing. 10 The airflow in the 5 hai unit is decelerated by a plurality of nets. The airflow through the system can be driven by a fan unit, and the wind unit is activated by a universal commutator motor (since 1 c such as sinking m〇t〇r). According to a second aspect of the present invention, there is provided a method for enhancing airflow through a Hong 15 mobile phone, which discharges a hot air heated by a heating member, substantially sterilized, and used to dry the palm of the hand. The IUn_疋 in the device is decelerated by 4 more screens through which the gas stream passes, wherein the 3H method includes providing the gas flow system, the gas flow system including - flow downstream of the heating member The cross-section will gradually become smaller along the path. 20 and 'in use, the airflow is enhanced by causing the flow to initially flow through a larger portion of the flow path and subsequently through a smaller portion of the flow path. The air then flows out of the device. According to a third aspect of the present invention, there is provided a hand dryer airflow system designed to enhance airflow in a device, the device discharging a 200916038 strand heated by a heating member, substantially sterilized, used for drying The hot air of the palm where the airflow within the device is degraded by one or more screens through which the airflow passes, wherein the hand dryer includes a complete fan casing containing a fan therein The seal housing, wherein the fan is a dual wind 5 fan's comprising two fan halves each designed to draw airflow into the fan casing. According to a fourth aspect of the invention there is provided a universal commutator motor designed to drive an apparatus for providing air flow, the motor comprising: - a magnetic field generating member for generating a magnetic field; a design for rotational motion and The field has an operationally associated rotating armature; wherein the ratio of the strength of the magnetic field at the armature to the strength of the magnetic field within the magnetic field is greater than about 1 to 1. The ratio of the magnetic field strength of s is approximately 0.9 to 1. The armature may comprise: a stack of armature structures (9), such as (9) armature sbueture, having a curved winding consisting of approximately a groove to approximately a groove and a groove 12 to approximately a groove 22, respectively. An arc of winding). The motor may further comprise: at least two carbon brushes; at least two brush holders operatively associated with the two carbon brushes; wherein the conductive material is designed to operate in a variable manner Electrical connections to a commutator can be provided under conditions. The flexible conductive material may comprise a braided copper wire, and the motor may further comprise: a commutator comprising a reinforcing ring in the body of the 200916038 commutator such that it The conducting segments are isolated and designed to substantially reduce bar to bar movement. According to a fifth aspect of the present invention, there is provided a universal commutator motor designed to drive an apparatus for providing air flow, the motor comprising: a magnetic field generating member for generating a magnetic field; a design for rotational motion and The magnetic field has an operationally associated rotating armature, wherein a ratio of a magnetic field strength at the armature to a magnetic field strength in the magnetic field is less than about 1 to 1; wherein the 5 Xuan armature comprises a laminated electrode structure, Having a curved winding consisting of approximately slots 1 to 10 approximately slots U and from approximately slots 12 to approximately slots 22; at least two carbon brushes; at least two carbons operatively associated with the at least two carbon brushes Grip wherein the flexible conductive material is designed to provide electrical connection of the carbon brushes to a commutator under variable operating conditions; and the commutator includes a stiffening ring within the body of the commutator It is isolated from a number of leads and is designed to substantially reduce strip-to-strip motion. The means for providing air flow may comprise an air dryer. According to a sixth aspect of the invention there is provided a method of operating a universal commutator motor, the motor being designed to drive an electrical appliance for providing air flow, the method comprising the steps of: generating a 2 in the motor a magnetic field; one of the rotating electrical frames of the motor is operatively associated with the magnetic field; the ratio of the strength of the magnetic field held at the armature to the strength of the magnetic field within the magnetic field is less than about one to one. The magnetic field strength ratio can be approximately 09 to 1. The method may further comprise the steps of: providing the armature with a corresponding 12 200916038 laminated armature structural tie and an increased magnetization zone from about slot 12 to a stack of armature structures, each having an approximately slot 1 to about the groove constitutes an arc-shaped winding consisting of about the groove 22. The method may further comprise the following step of: providing at least a carbon brush; providing at least two carbon grips operatively associated with the at least two carbon brushes; using a suction meter to provide to - under variable operating conditions - The electrically conductive, electrically conductive material of the commutator is connected to provide an electrical connection to the flow under variable operating conditions. The flexible conductive material can comprise a copper braided wire. The method may further comprise the step of providing 1_5(10)H) a stiffening ring comprising - located within the body of the commutator such that it is isolated from the plurality of conductive sheets and is designed to substantially reduce strip-to-strip motion.

According to a seventh aspect of the present invention, there is provided a method of operating a universal commutator motor that is designed to drive an electrical appliance for providing air flow. The method comprises the steps of: rotating one of the motors The U electrode is operatively associated with the magnetic field; the ratio of the strength of the magnetic field held at the electrode to the strength of the magnetic field within the magnetic field is less than, for example; providing the electrical frame with an increased magnetization corresponding to a stack of armature structures The laminated armature structure has a solitary winding consisting of approximately a groove to approximately a groove and a groove of approximately 12 to approximately 22M; providing at least two carbon brushes; a carbon grip operatively associated with the at least two carbon brushes; utilizing a flexible electrically conductive material designed to provide electrical connection of the carbon brushes to a commutator under variable operating conditions to provide under variable operating conditions Electrical connection to a commutator; and a commutator comprising a stiffening ring in the body of the commutator such that it is isolated from the plurality of conductive sheets and is circumscribed 13 200916038 Ji Cheng can substantially reduce sports bar to bar. The means for providing air flow may comprise an air dryer. The means for providing air flow may comprise a hand dryer airflow system as described above. According to an eighth aspect of the present invention, there is provided an air flow system designed to enhance airflow in a hand dryer, the dryer being discharged by a heating member, substantially sterilized, and used for drying The hot air of the palm, where the airflow in the device is decelerated by one or more stencils that allow the airflow to pass through, wherein the system is provided with a flow path that traverses the passage 10 times along the passage. Thereby, in use, the air flow is enhanced by the initial flow through a larger portion of the air flow path and subsequently through a smaller portion of the air flow path, and then the air flow exits the device. In the eighth aspect, the air passage which gradually becomes smaller along the passage may be provided downstream of the heating member. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described more fully hereinafter with reference to the accompanying drawings. The front view of Figure 1A is a specific embodiment of a sterilization dryer in which the internal gas flow is decelerated with several screens having an improved airflow system capable of increasing the airflow through the device. 1A is a side view of the hand dryer of FIG. 1A; FIG. 1C is a bottom view of the bottom of the hand dryer of FIG. 1A; FIG. 2 is a 1A drawing of the hand dryer to open the device casing to expose the inside. A rear perspective view when viewed in the direction of arrow A of Figure 1B; 14 200916038 透视3 diagram perspective view of the four main screens of the filter screen, a specific embodiment, with The first clamp of the screen has been withdrawn. In the embodiment of Figure 1A, the screen is used to decelerate the airflow; Figure 4A is a perspective view of a particular embodiment of a fan casing and fan motor, wherein There is a pair of subsequent screen clamps and a screen attached to the fan casing; Figure 4B is a development view of the apparatus of Figure 4A, the fan casing contains a pair of fans in a specific embodiment; and Figure 4C is another apparatus of Figure 4A An expanded view showing more dual fans Section 4D is a side cross-sectional view of the dual fan of Figures 4B and 4C; Figures 4E and 4F are side views of the dual fans of Figures 4B, 4C and 4D, Describe the different sides of the fan;

4G is a cross-sectional view of a dual fan embodiment of FIGS. 4B, 4C, 4D, 4E, and 4F. FIG. 5 illustrates three interchangeable outlet passages. Embodiments, in the specific embodiments of FIGS. 1A to 2, the specific embodiments may have different taper to allow the airflow to leave the fan casing and flow out of the dryer; the plan view of FIG. 6A is based on at least the identification identified by the inventors. One prior art illustrates an exemplary arc winding associated with a lamination arm of an electric motor; 20 FIG. 6B is a plan view illustrating a curved winding of an electric motor in accordance with a preferred embodiment; FIG. 6C is a plan view according to a The preferred embodiment illustrates the field assembly of the universal motor in an exploded view of the assembly; Figure 6D shows the parts list of the magnetic field assembly of Figure 6C; 15 200916038 The plan view of Figure 6E is based on a preferred embodiment The embodiment shows a brush commutator housing assembly of a universal motor in a component development view; FIG. 6F is a parts list of the brush commutator housing assembly of FIG. 6E; and the plan view of FIG. 6G is based on a preferred embodiment Example to component exhibition 5 is a diagram showing a power module of a general-purpose motor, and FIG. 6H is a parts list of an armature assembly of FIG. 6G; and FIG. 61 is a plan view showing a general-purpose motor in an exploded view of the assembly according to a preferred embodiment. The drive end housing assembly; FIG. 6J is a parts list of the drive end housing assembly of FIG. 61; 10th 6K(a) is a cross-sectional view illustrating a commutator of a preferred embodiment of the present invention; (b) The side cross-sectional view of the figure shows the commutator drawn along the line AA of Fig. 6K(a); and the 6K(c) figure shows the detail of part B of the 6K(b) figure. . In the detailed description, like elements are denoted by the same element symbols, which are only for the purpose of making the various embodiments and modifications. C. Embodiment 3 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, a front view of Fig. 1A illustrates a sterilization dryer in the form of a hand dryer 1 20. Fig. 1B is a side view of the dryer 1, and Fig. 1C is a bottom view of the dryer 1. The rear perspective view of Fig. 2 illustrates the dryer 1 that is opened to expose the inside. The dryer 1 draws in ambient air. Killing and removing bacteria from the airstream 16 200916038 is preferred. The gas stream is heated and then discharged by the dryer, usually directly to the palm of the user for drying. In Fig. 2, the hand dryer has a device casing 10, 11 including a main cover 1 and a bottom plate u. The hood 10 is attached to the bottom plate u by a plurality of hinges 12. 5 The bottom plate 11 can be fixed to the wall with several screws, bolts or other suitable fastening mechanism. Figure 1A illustrates the hood 10 in a closed position, ready for use (e. g., mounted on a wall). Airflow 10 The hand dryer 1 is designed to discharge airflow or a substantially sterilized hot air for dry palms. In this particular embodiment, the hot air has an operating range of between about 55 and 65 °C. In summary, when the dryer 1 is operated to dry the palm of the user, the ambient air is drawn into the device housing, then heated and discharged by the device. 15 Air is drawn into the dryer 1 (indicated by arrow 200A in Figure 1A) and finally discharged by the dryer (indicated by arrow 200E in Figure 1A). ί , main screen (the first picture is the front view, and the second picture is the rear view. In the first picture, the airflow 200A enters the dryer in the area on the left hand side of the drawing. However, in the 2nd 20th figure, The introduction of airflow 200A will enter the dryer 1) in the area on the right hand side of the drawing. In Fig. 2, in the dryer 1, the introduced air 200A passes through the main screen assembly 410. In this particular embodiment, the primary screen assembly includes four main filter holders 410A, 410B, 410C, 410D (see Figure 3 for a more detailed illustration). 17 200916038 The function of the master web and its web is to kill and remove bacterial particles. In this particular embodiment, the gas stream is substantially sterile, and 100% sterility is preferred. The characteristics of the filter embodiment and its bactericidal action are described in the inventor's earlier corresponding International Patent Application No. PCT/AU2005/001803 (filed in the name of the s. This is incorporated herein by way of example only as a non-limiting example of a filter function. The information in PCT/AU2005/001803 explains how the exemplary embodiment of the dryer can discharge a substantially sterile stream of air, preferably discharging a 100 Torr/inch sterile stream. 10 Subsequent Screens In this embodiment, after the airflow passes through the screens of the main screen clamps 410A, 410B, 410C, 410D, the airflow is drawn to the fan casings 400A, 400B containing a fan. A portion of the airflow will pass through a sleeve 400A into the fan casing and through the subsequent mesh of the subsequent mesh clamps 420A, 420B. The subsequent upstream network is used to distribute and add beneficial substances to the airflow. For example, the screen of one of the subsequent screens 420A or 420B can spread another antimicrobial substance within the gas stream. The subsequent antibacterial material dispersed by the screen of the subsequent jig 420A or 420B will remain in the airflow until it is discharged from the dryer 1 by the outgoing airflow 200E and can be applied to the palm of the user. One or more of the primary clamps (preferred at the rear 410C, 410D) or the subsequent screens of the clamps 420A, 420B can be used to dispense beneficial material into the gas stream. The material may eventually be applied to the palm of the user 18 200916038 as it exits the dryer 1 or alternatively the material is dispersed throughout the ambient air around the hand dryer 1. For example, the fragrance is dispersed in the airflow to make the atmosphere in the bathroom smell comfortable. As another example, the antimicrobial material is dispersed within the atmosphere of the restroom to minimize airborne bacteria. 5 Many people who use public toilets feel uncomfortable after washing their hands and must touch the doorknob that is full of bacteria in the toilet door. If the bacteria are returned because they touch the dirty toilet doorknob, this will make the hand washing almost empty. Some users attempt to open the door with their feet to avoid touching the door handle. In this particular embodiment, the air stream will be coated with a small amount of expellable material (expellabie_substance) in the palm of the hand. For example, the user's palm can be coated with a small amount of antibacterial material. In this particular embodiment, the amount of the palm of the user is sufficient to provide a greater degree of protection when the toilet door is in contact with the handle of the bacteria. In some embodiments, the mass of material scattered on the palm of the user is sufficient to provide a feeling of cream on the hand. This makes the user feel that there are 15 kinds of beneficial things on the hand. Some examples of materials that can be dispersed in a gas stream for this purpose are described in the inventor's corresponding International Patent Application No. PCT/AU2006/001815 (filed in the name of Panache Global Holdings Pty Ltd), which is hereby incorporated by reference. It is incorporated herein by way of example only as a non-limiting example of a chemical that can be dispersed in a gas stream in this manner. Preferably, the repellent material is dispersed by subsequent screens (420A or 420B) located on the fan casings 400A, 400B, rather than by the earlier main filter, net clamps 410A, 410B, 410C, 410D. This ensures that all expellable material can enter the fan casing substantially. On the other hand, if it is mainly to distribute the repellent substance by using one of the main filter screens 19 200916038 410A, 410B, 410C, 410D, the partially expellable substance may be additionally stored in the outer casing 1 On the inner surface of 11. Depending on the nature of the repellent material, the user can determine whether the optimal position of the filter with special repellent material should be on the main screen clamp 5 410A, 410B, 410C, 410D or in the subsequent filter, net 420A , on the 420B. After the airflow is sucked into the fan casings 400A, 400B, it is discharged from the dryer 1 through the outlet nozzle 14 in the airflow 200E. Filter options 0 The number of screens actually used depends on the user responsible for installing and/or servicing the dryer 1.

Figures 3 and 4C illustrate a mesh that can be removed by clamps 41a, 410B, 410C, 410D and 420A, 420B. For example, when the life of an active ingredient in a particular raft or mesh expires, the maintenance user can replace the filter with a new 15 filter. As another example, different screens may contain different active ingredients to be injected into the gas stream so maintenance users may purchase different screens to suit specific needs. For example, for a medical professional (e.g., a surgeon), the material dispersed in the airflow will be different from the dispersed material used in the dryer of the public toilet. 20 Air Heater Refer to Figure 4A. The dryer 1 is provided with an electric heating element 4 (not shown in detail). The heating element is located at a heating element location 5 behind the shroud 15 near the opening of the fan sleeves 400A, 400B. The heating element comprises a wire mesh or a mesh which is designed to be electrically heated by the 20 200916038 when the dryer vents the hot gas stream 2〇〇E. Initial Main Inlet and Final Main Inlet In this particular embodiment, the outer casing 10, 11 of the dryer 1 is required to be completely sealed, for example, with a rubber gasket. A complete seal of the outer casing can be achieved by adding a seal to all of the contact points of the main cover 10 and the bottom plate 11. The degree of sealing is such that when the outer casings 10, 11 are closed, all air entering the dryer 1 must pass through the initial main inlet in the form of the initial main perforations 405A. This ensures that all incoming air is filtered by the screens of the main screen clamps 410A, 410B, 410C, 410D. Otherwise, any air that leaks into the outer casing rather than through the initial main inlet 10 will not experience filtration through the screens of the main clamps 410A, 410B, 410C, 410D. Therefore, all of the airflow entering the dryer 1 through the initial main perforation 405A must pass through the screen sequence of the clamps 410A, 410B, 410C, 410D. In the particular embodiment of Figure 1A, there is only one initial main perforation 15 405A, however, in other embodiments, the initial opening may be divided into a plurality of openings as long as the total area of the plurality of initial main inlets is greater than the fan casing The area of the final main entrance. The air then enters the cavity region within the fully sealed and closed outer casing. (The device has a disconnect switch to prevent airflow when the housing is opened). 20 Next, airflow is drawn into the fan casing 400A, 400B from the cavity. Part of the air flow enters the fan through a final main inlet in the form of a number of final main perforations 405B (portion 400A of the fan casing that is filtered by the screens of subsequent filter clamps 420A, 420B). The other part of the airflow is drawn into the fan through another portion of the final main inlet of the form of the final main perforation 21 200916038 405C (which is part of the fan casing that is not filtered, relatively close to the fan motor 43A). casing. Fan The airflow passing through the dryer 1 is generated by the fan 401 shown in Figs. 4B, 4C, and 5D. The fan rotates within the fan casings 4a, 400B. The rotation of the fan 401 is operated by the motor 430. In this embodiment, the motor can be a universal motor at speeds up to 7500 rpm or above under operating conditions, as further described below. In this particular embodiment, the fan blades 401 are formed from injection molded plastic. The fan should not be made of a material that is easily broken at very high rotational speeds. In addition, the fan should not have the flexibility to warp at high rotational speeds. The fan of this embodiment is made of a nylon synthetic material, although other suitable materials can be used. 15 Dual Fan Blades As a background, the screens of the screen clamps 410A, 410B, 410C, 410D & 420A, 420B decelerate the airflow through the dryer. In this embodiment, at least the problem of improving the problem is to make the fan 401 a double fan as shown in Figs. 4C and 4D. 20 The dual fan has two areas each with similar functionality to a standard single fan. In other words, a fan part has the effect of two fans. In Fig. 4D, even if the fan 4〇1 is made of a single part, Hui is considered a double fan because it has two individual fan zones separated by a central web 4〇3, which The central web 4〇3 is extended by a central axial spindle 4〇4 22 200916038. The spindle 404 is coupled to a drive shaft (not shown) of the motor 430. In this particular embodiment, the dual fan is constructed from two fan halves. The cross-sectional view of Fig. 4D illustrates the two half cross sections of the fan halves 4〇2a, 4〇2B. 5 Figure 4E is a side view of the fan 4〇1 showing the fan half 402A relatively close to the final main bore 405B (with filtering). Similarly, Figure 4F illustrates the other side of the same-fan, which is shown closer to the fan half 402B of the opposite final main bore 405C (near the fan motor 43A). 10 Figures 4E and 4F show that the periphery of the fan 401 is provided with a fan blade 406 which is evenly arranged in a circular frame. When the fan blades 4〇6 are rotated, air is drawn into the fan casing, thereby also sucking ambient air into the dryer 1. The 4Gth image is similar to the 4D image, however the 4Gth image is a cross-sectional view or "slice diagram" of the double fan 401 along the dotted line 407 of Fig. 4E. The dual fan can be generally described as a specific embodiment having a cylindrical outer rim carrying a plurality of fan blades, wherein the cylinder has a central partition or central web 4〇3. The central web divides the body into two halves. Not limited to theory, it is believed that the use of the dual fan reduces the degree of turbulence in the airflow exiting the fan 20. It is believed that the airflow from the dual fans is more streamlined and less turbulent than the airflow from a single non-double fan. According to the 4s' less end flow, the advantage of back-pressure is particularly low in the fan and exit nozzles 14 . Thus, by minimizing the occurrence of turbulence in the interior 23 200916038 of the airflow (which is exhausted by the fan via the outlet nozzle 14), the dual fan is beneficial for enhancing the airflow. It is advantageous to minimize the back pressure of the outlet nozzle 14, except for other reasons, because back pressure can slow the exit airflow and/or increase the level of the arpeggio. In the side cross-sectional view of Fig. 4D, the fan is slightly tapered, meaning that the diameter of the first fan half 402A is slightly smaller than the diameter of the second fan half 402B. In other words, the cross section of the dual fan is slightly truncated. Outlet Nozzles As described above, the filter nets of the screen clamps 41A, 41〇B, 41〇C, 410D&420A, 420B have an effect on the deceleration of the g of the secret dryer. 10 1 can improve this - the problem is characterized by the fact that under the heater position 5, the airflow system for the dryer 1 is provided with a small airflow path along the passage. The outlet nozzle 14 downstream of the (four) (four) shape 5 is tilted. The position of the pirate ... 15 ritual buy cry 14 is a cone 'by this it can be used to fill the cross section along the path will gradually change the _ pass request. By the initial flow through the nozzle, the pass-through velocity will increase. When the flow passage 14 is gradually reduced in cross section, the air flow is passed through the outlet 20 dryer 1. , the outlet member of % 14 flows out and bakes

The exit of the 7k road is faster than the speed of the mouth U, and the mouth 14 does not allow the outgoing airflow to have a larger and faster fan motor as described in this patent (which leads to problems related to the second soul). In the embodiment of Fig. 2, the outlet mouthpiece 14 has a taper of about 7 degrees for the vertical line 24,160,038, however, in other embodiments, the taper can be modified. Figure 5 illustrates a number of nozzles having different tapers instead of the specific embodiments 14A, 14B, 14C. When the dryer 1 is used in a different user environment, the various end uses may have different requirements. Another criterion is that the taper affects the level of noise when the airflow exits the nozzle 14. Different uses In some environments, users need to exit the airflow as quickly as possible. For example, when spreading the beneficial substance into the gas stream, it is necessary to spread the 10 beneficial substances to the surrounding environment outside the dryer 1 as quickly as possible. For example, public toilets or washrooms are best spread out of spices throughout the restroom atmosphere. This requires a rapid exit of the airflow 200E so that it has the opportunity to reach the farthest point in the bathroom. This application benefits from the narrower nozzle 14C of Figure 5. For other uses, when the velocity of the exiting airflow 200E is still important 15, the end user may prefer a wider airflow edge to ensure that the palm can fully or effectively coat the beneficial material in the outgoing airflow 200E. This application can benefit from the wider nozzle 14A of Figure 5. In some other cases, a trade-off is required whereby a device can be used to achieve both of the above applications. This application can benefit from the medium 20 nozzle 14B of Figure 5. Changing the nozzle size produces different noise, and smaller nozzles produce louder noise than larger nozzles. In the nozzle of Fig. 5, nozzles of different modes are used interchangeably for the specific embodiment of Fig. 2. 25 200916038 Back pressure In the context of other parameters of the dryer 1, if the taper is too large, there may be a problem of back pressure. Without being bound by theory, it is believed that when the taper is too large, the desired thin layer gas flow through the nozzle 14 may be destroyed, and the exit velocity of the exit gas stream 200E may also be lowered. Therefore, when the airflow cannot flow out of the dryer too quickly, there is a problem of back pressure accumulation. Back pressure may accumulate in the nozzle or it may be in the dryer. Although the conical nozzle can increase the exit speed, on the other hand, the large taper will cause the airflow speed to be inadvertently slowed down due to the reverse accumulation. Therefore, the designer must also consider some other parameters of the dryer when the designer determines that the upper limit of the taper will occur. In this embodiment, it has been found that the optimum taper for the vertical line is about 7 degrees 'but 'when the shape of the inner cavity of the dryer, the design of the wind and the force of the horse 15, the diameter of the fan, the length of the mouth. The number of crossings, the smoothness of the nozzles, and other variables that affect the overall velocity of the airflow through the dryer may require some experimentation. All of these factors affect the optimum taper for a particular embodiment of the dryer. Also the tampering of the nozzle 20 produces eight • one.../, τ, 疋μ + the air passage that the passage will gradually become smaller. For example, the nozzle may be comprised of an initial non-cone having a larger flow cross-section and a subsequent non-tapered region having a smaller flow cross-section. This feature is not limited to a specific embodiment with a taper. In other words, in some other embodiments, the taper of the nozzle is defined not only by the slope but also by the conversion method, for example, by a square cross section at one end of the nozzle that can be converted to the other end of the same nozzle. Round or differently shaped perforations. 5 Different nozzles can be used to change the arpeggio level of the airflow, so the basic background of the dryer must be considered. Some environments are more or less critical to high voice levels. Enhancement of Airflow In this patent specification, the concept of enhanced airflow encompasses the concept of a faster airflow 10, however, the concept of enhanced airflow also includes the concept of maintaining proper airflow through and out of the dryer 1, regardless of the deceleration effect of the filter. . In other words, the reinforcement is derived from overcoming the deceleration of the airflow when it is blocked by one or more screens to a detrimental level in the dryer, causing the airflow to have a normal deceleration. Thus, in some embodiments, the present invention is capable of achieving a faster 15 airflow, but is not necessarily limited thereto. In contrast to the absence of improved features of such specific embodiments in the dryer, the present invention can encompass situations where the gas flow rate is not substantially reduced even with the use of one or more flow blocking screens. Motor Design 20 The airflow flowing through the airflow system in the hand dryer 1 is driven by a fan 401. In this particular embodiment, a universal commutator motor is used to start and rotate the fan. In the provision of a dryer 1 with a motor to address the problems described above and to meet the requirements of the appliances described herein (eg, a sterilization hand dryer), 27 200916038 The inventors discovered the need to build a motor (universal type) Preferably, the relationship between the stationary field and its rotating armature. The cause of such motor damage is often that the bearing is damaged by overheating, which can cause the lubricant to leak out and cause at least one of the following conditions: the bearing is noisy; the friction is higher; the heat is generated by 5 to overcome the friction and the final result It is the motor burned. Therefore, we have established a magnetic relationship to achieve a relatively cold armature. The general purpose of the universal motor is to attempt to maintain the magnetic (or magnetic field strength) ratio of the armature and the fixed field to 1:1. The magnetic relationship established in accordance with the preferred embodiment is a ratio of less than 1:1. The ratio is about 9.9:1 is preferred. Even if the motor is operated at full power corresponding to a full load of 10, a colder armature can be provided. In fact, the inventors have discovered that this relationship helps to increase power while reducing the heat dissipation of the electric raft. Referring to Figures 6A and 6B, which are plan views of a laminating arm 600, it is preferred to add a 15 armature magnetization region of the universal motor in accordance with several embodiments. As shown in Fig. 6A, the conventional motor provides a curved winding 601, 602 composed of slots 2 through 10 and consisting of slots 12 through 20. The inventors have found that it would be advantageous to provide a fox-shaped winding consisting of approximately slots 1 through 11 and approximately slots 12 through 22, respectively. In accordance with the present invention, in Figures 6A and 6B, the cross in the laminated arm structure represents the direction of the magnetic field 20 from the drawing and the circular indicia within the laminated arm structure indicates the direction of the magnetic field entering the drawing. Furthermore, it has been found to be advantageous to provide a clear electrical connection between the brush and the commutator for all operating times. Preferably, at least one carbon brush and brush holder can be modified to provide a good electrical connection' and a flexible conductor is used to ensure a clear electrical connection at all times. 28 200916038 In an exemplary embodiment, two carbon brushes and brush holders can be modified (i.e., each of the two back brushes has a brush holder) to provide a good electrical connection to the flexible conductor. In this respect, it is preferable to provide a flexible copper braided wire in which a carbon brush is inserted at one end and a copper wire at the other end is attached (for example, soldered or pinched) to a terminal connected to the magnetic field wiring (4). Other suitable materials for the flexible conductor may be silver, brass or other electrically conductive materials known to those skilled in the art. Upgrading to a high-performance commutator with a stiffener can be used to virtually eliminate any strip motion at high speeds. Please refer to the figures 6K(a) to 6K(C). The solution provided by the preferred embodiment is to use the whole machine 61 〇 'the conductive reinforcing ring 612 with the individual copper piece 611 and the conductive reinforcing ring 612 It is located in the commutator body 613 at a distance from the conductive sheet 611 such as shai and is molded into the molding material 614 of the commutator 61. The electrically conductive material used to reinforce the ring 612 can be a metal having sufficient strength (e.g., steel or steel) to provide adequate reinforcement and durability relative to the commutator at high speeds. The commutator 6 of Fig. 6K has the following 15 advantages to ensure that the commutator strip or sheet 611 does not lift or move at high speed: A. The solid and rigid copper sheet 611 does not twist or bend even at high temperatures. The B. mold causes the reinforcing ring 612 of the commutator 610 to function like a reinforcing bar in the cement. C. The reinforcing ring 612 made of a tough material can provide the rigidity of the commutator 61〇 and facilitate the use of the individual copper sheets 611 for the commutator 610. It should be noted that the commutators mentioned by Cooper et al. above may not be applicable to such commutators. According to the above feature, it has been experimentally found that the operating speed of the universal motor can exceed 7,500 rpm. For example, it has been tested that the unloaded speed of the motor can reach 29 200916038 25, OOO rpm +/- about 15-20%. Exemplary test results are listed below. 3. Performance (1) Life test The counterclockwise direction is open for 30 seconds/off for 30 seconds for more than 500 hours.

(2) Insulation class E (3) Characteristic voltage AC 240 volts / 50 Hz No load input Maximum 220.0 watts No load current Maximum 0.95 amps No load speed 25000 ± 15% RPM Rated torque 2.85 kg-cm Rated current 2.55 ± 12% A Rated speed 12000±12% RPM Rated input 585.0±12% W 4. No load starting voltage less than 100V, 50Hz 5. Insulation resistance 10 is greater than 100M ohm, DC500V (under normal temperature and humidity) 6. Dielectric strength is 1500 volts And 1.0 mAh can withstand 1 second. 7. The noise is less than 80dB (A) and is measured at a distance of 1 meter from the motor on the non-resonant rubber. 15 8. Vibration No abnormal vibration. 9. Structure and construction 30 200916038 (9-1) External dimensions such as DWG.NO, W5R32 (9-2) Shaft S45C diameter 2.0 (9-3) Bearing ball bearings (629-2RSLTN9&627-2Z) (9-4) bracket 1.2 mm black steel (9-5) commutator 22 pieces (9-6) electrode 2 electrodes (9-7) wire 〇 _ mm square, 7.5 amp, PVC, V90-ll ( n: 250 volts (9-8) motor weight 1.45 kg

(9-9) Thermal protector VDE License number: 104216 SEKI ST-22 105°C 10 10. Rotor end clearance less than 0·5 mm 11. Screw clamp torque 15·0 kg cm (screw 3/16 英 pairs _ 24) and then kilograms (screw Μ 4χ0.7) 15 (d) The general purpose motor of the specific example also contains robbery as a useful safety measure and failure insurance add-on a _

The motor has a long life expectancy. The motor is serviceable. The motor is suitable for inter-compartment operation and continuous operation. The motor can be operated at a higher (four) temperature.

General purpose motors made of small pieces and small pieces. 31 200916038 Various enhancements to the above-mentioned special iron highlights - some features, each feature of the body implementation _ mention - _ ^ = ^ used in the tool, the increase _ sign contains: make 〃 specific example 5 10 nozzle, and / Money (4) when the uniform motor and / or provide a tapered outlet, but in combination with all of these features - dry 1A to 2 - specific embodiment, when all of these features - start: = device - there will be Beyond the general expectation: 'Outflow gas stream 200E can be about 72 meters per second in the first embodiment to the second figure. Other modifications in the other-modified 'not to change to a different nozzle, can be set to a single nozzle = become a material ❹ 丝 职 职 职 职 职 职 锥 - - - - - - - - - - - - - - - - - - - - - - - - All environments. The apparatus can be provided with a plurality of outlet nozzles that incorporate the principles of faster gas flow (as described herein). Therefore, related to the downstream exit gas flow path is an option to include more fluorine flow paths. The system can be used in dryers with more than one or more nets, however the benefits of this system are most pronounced in dryers with multiple crossings. For example, the specific embodiment of Fig. 2 can have six individual webs that can decelerate the airflow. <RTI ID=0.0>>>"""""""""" 32 200916038 In other modifications, it is conceivable and possible that, in another embodiment of the system, the upstream of the heating member is provided with an air flow path in which the flow cross section gradually becomes smaller along the passage, that is, In this embodiment, one or the heater is disposed at the end of the conical nozzle. In the present specification, the use of "including," or "derivatives" is used to mean a material element, an integer, a step or a feature, but is not to be construed as excluding other elements, integers, steps or The possibility of the feature. [Simplified description of the 闺] The front view of the figure shows that the internal airflow is reduced by several filters, and the mobile phone is used for the mobile phone. The modified airflow system of the airflow is a specific embodiment; FIG. 1B is a side view of the brother 1 a Huan mobile phone; FIG. 1C is a bottom view of the bottom of the drying machine of the eighth drawing; 1A is a rear perspective view of the hand dryer when the device casing is opened to expose the inside, "the arrow A direction of FIG. 1B"; the perspective view of FIG. 3 shows one of the four main filter clamps sandwiching the filter. For example, the first clamp with the screen in the figure has been extracted. In the embodiment of Fig. 1A, the screen is used to decelerate the airflow; and Fig. 4A is a perspective view of a specific embodiment of the fan casing and the fan motor. 'Middle, '-for follow-up Net clamp and screen attached to the fan casing: Figure 4B is a development view of the device of Figure 4A, the fan casing contains a double wind is a specific embodiment; Figure 4C is another development of the fourth drawing device The figure shows more details of the double 33 200916038 fan; the 4D is the side cross-sectional view of the double fan of the 4B and 4C; the 4E and 4F are the 4B, 4C and 4D view of the double fan, they are shown on different sides of the fan; 5 4G diagram shows the double fan in Figure 4B, 4C, 4D, 4E and 4F Cross-sectional view of an embodiment Figure 5 illustrates three interchangeable outlet passage embodiments. In the specific embodiments of Figures 1A through 2, embodiments may have different tapers to allow airflow to exit the fan sleeve. Tube and flow out of the hand dryer; 10 Figure 6A is a plan view showing an exemplary curved winding associated with the laminated arm of the electric motor according to at least one prior art identified by the inventors; Figure 6B is a plan view according to a preferred embodiment Embodiments illustrate a curved winding of an electric motor; a plane of Figure 6C The figure shows a magnetic field assembly of a universal motor according to a preferred embodiment of the assembly. Figure 6D is a parts list of the magnetic field assembly of Figure 6C. The plan of Figure 6E is based on a DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A brush motor housing assembly for a universal motor is illustrated in an exploded view of the assembly; Figure 6F is a parts list of the brush commutator housing assembly of Figure 6E; The electrical assembly of the universal motor is illustrated in a component development view in accordance with a preferred embodiment; FIG. 6H is a parts list of the armature assembly of FIG. 6G; and the plan view of FIG. 61 is in accordance with a preferred embodiment. The drive end housing assembly of the universal motor is illustrated in a component development diagram; 34 200916038 Figure 6J is a parts list of the drive end housing assembly of Fig. 61; Figure 6K(a) is a view of the above a commutator of a preferred embodiment; a side cross-sectional view of the 6K(b) diagram illustrating a commutator drawn along a straight line AA of Figure 6K(a); and a sixth K(c) diagram A detailed view of part B of the 6K(b) diagram. [Main component symbol description] 1... for mobile phone 4···electric heating element 5... heating element position 10... main cover 11... bottom plate 12... hinge 14... outlet nozzle HA... slightly wide nozzle 14B... medium nozzle 14C... narrow nozzle 15 ...shield 200A...arrow 200E···exhaust airflow 400A,400B...fan casing 401...fan 402A,4〇2B...subsequent stencil 403...central web 404...spindle 405A...initial main perforation 405B,405C ...final main perforation 406...fan blade 407...dotted line 410...main screen assembly 410A,410B,410C '410D.··Filter clamp 420A, 420B...subsequent filter 430...motor 600··· Laminated arms 601, 602... arc windings 610 ··· commutators 61l···copper sheets 612···conductive reinforcing rings 613·· commutator body 614...molding material 35

Claims (1)

, 916038, the scope of patent application: a kind of airflow system, which is designed to enhance the gas in a hand dryer ~'Shai for the mobile phone system to discharge a heating element with a heating element, substantially sterilized, 'for drying The hot air of the palm where the airflow in the device is 9 or more decelerating the mesh through which the airflow passes, wherein the system downstream of the heating member is provided with a flow cross section that gradually follows the path The air flow path is reduced, whereby, in use, the air flow is enhanced by the initial flow through a larger portion of the air flow path and subsequently through a smaller portion of the air flow path and then the air flow exits the device. 'The part of the taper. 2. If the patent application scope (4) is applied, the airflow path includes at least one system having "-^ patent track circumference item 2", wherein the degree can be selectively changed by the user. In the case of 1 item or phantom item, the air flow path non-tapering 16 is selectively changed by rotation, and the replacement is replaced by a 冋 size (from the sequence-sequence with different taper generation air passage means. · As in the scope of the patent application, items 2 to 4, the air flow path contains several non-cone materials = 1 (four) system. Among them, as in the above all patent applications, the material is used as a material machine. System of the system 2 + "The complete seal of the battalion 36 200916038 7. The system of claim 6 wherein all of the air flow enters the device housing through the initial main air intake member on the outer casing of the device And all of the airflow then enters the fan casing through a final main air intake member on the fan casing, wherein the initial main air intake member is larger than the final main air intake member, whereby, in use, the air flow By initial By moving the larger of the initial and subsequent main intake member is enhanced by the relatively small primary inlet of the final member. 8. The system of claim 7, wherein the larger initial primary inlet member and the smaller final primary inlet member have a flow cross-section of about 1.38. 9. The system of claim 6 wherein the fan is a pair of fans comprising two fan halves each designed to draw airflow into the fan casing. 10. The system of any of the preceding claims, wherein the airflow within the apparatus is decelerated by a plurality of screens. 11. The airflow system of any of the preceding claims, wherein the airflow through the system is driven by a fan device, and the fan device is used in accordance with items 17 to 25 of the patent application scope. Any one of the universal commutator motors to start. 12. A sterilization drying machine comprising an improved airflow system according to any one of claims 1 to 11. 13. A method for enhancing airflow through a hand dryer, the dryer system discharging a hot air heated by a heating member, substantially sterilized, used to dry the palm, and the airflow in the device Decelerating by one or more screens through which the airflow passes: 37 200916038, wherein the method includes providing the apparatus with a flow system that includes a flow cross section downstream of the heating member that gradually changes along the passage The small airflow path, and, in use, enhances the airflow by causing the airflow to initially flow through a larger portion of the airflow path and subsequently through a smaller portion of the airflow path, and then the airflow exits the device. 14. The method of claim 13, wherein the system is a system according to any one of claims 1 to 12. 15. A hand dryer airflow system designed to enhance airflow in a device that discharges a heated air that is heated by a heating member and substantially sterilized for drying the palm of the hand. The airflow within the apparatus is decelerated by one or more screens through which the airflow passes, wherein the dryer package includes a fully sealed enclosure containing a fan casing of a fan, wherein The fan is a pair of fans that contain two fan halves each designed to draw airflow into the fan casing. 16. — The use of a dual fan in a sterilization dryer. 17. A universal commutator motor designed to drive an apparatus for providing air flow, the motor comprising: a magnetic field generating member for generating a magnetic field; and a rotational motion operatively associated with the magnetic field A rotating armature; wherein the ratio of the strength of the magnetic field at the electrical field to the intensity of the magnetic field 38 200916038 within the magnetic field is less than about one to one. 18. For the motor of the 17th item, the magnetic field strength ratio is approximately 0.9 to 1. 19. The motor of claim 17 or claim 18, wherein the armature comprises: a stack of electrical frame structures having - consisting of approximately slot i to approximately slot 11 and approximately approximately slot 12 to approximately The arc 22 of the slot 22 is formed. 20. The motor of claim 17 to 19, further comprising: at least two carbon brushes; to v two carbon grips operatively associated with at least two carbon brushes of δ hai; wherein the flexible conductive The material is designed to provide an electrical connection to a commutator under variable operating conditions. 21. A motor as claimed in claim 2G wherein the flexible conductive material comprises a copper braided wire. 22. The motor of claim 17 to 2, further comprising: a positive flow comprising a reinforcing ring in the body of the commutator such that it is isolated from and detached from the plurality of conductive sheets Designed to substantially reduce strip-to-strip motion. 23. A universal commutator motor designed to provide air flow, the motor comprising: a magnetic field generating member for generating a magnetic field; a rotation designed to be rotationally coupled to the magnetic field The ratio of the magnetic field strength of the armature to the magnetic field strength in the field is less than 1 to 1; wherein the armature comprises a __ laminated armature structure, which has a respectively 39 200916038 from approximately slot 1 to Approximately about the groove 11 and an arcuate winding consisting of approximately the groove 12 to about the groove 2 2; at least two carbon brushes; at least two carbon holders operatively associated with the at least two carbon brushes, wherein the flexible conductive material is Designed to provide electrical connection of the carbon brushes to a commutator under variable operating conditions; and, the commutator includes a stiffening ring within the body of the commutator such that it is isolated from the plurality of conductive sheets and It is designed to substantially reduce strip-to-strip motion. 24. The motor of any one of clauses 17 to 23, wherein the means for providing air flow comprises an air dryer. 25. The motor of any one of clauses 17 to 23, wherein the means for providing air flow comprises a gas flow system according to any one of claims 1 to 11. . 26. A method of operating a universal commutator motor, the motor being designed to drive an electrical appliance for providing air flow, the method comprising the steps of: generating a magnetic field within the motor; causing one of the motors The rotating electric field is operatively associated with the magnetic field; the ratio of the strength of the magnetic field held at the electrical field to the strength of the magnetic field within the magnetic field is less than about one to one. 27. The method of claim 26, wherein the magnetic field strength ratio is about 0.9 to 1. 28. The method of claim 26 or 27, further comprising the following 40 200916038 steps: providing the armature with an increased magnetization zone corresponding to a stack of armature structures δ 玄 叠 片 armature The structure has a solitary winding consisting of approximately slot 1 to approximately slot η and consisting of approximately slot 12 to approximately slot 22. 29. The method of claim 26, wherein the method further comprises the steps of: providing at least two carbon brushes; providing at least two carbon grips operatively associated with the at least two carbon brushes; A flexible conductive material that provides electrical connection to the commutator under variable conditions to provide electrical connection to a commutator under variable operating conditions is contemplated. The method of claim 29, wherein the flexible conductive material comprises a copper braided wire. 31. The method of claim 26, wherein the method further comprises the steps of: providing a commutator that includes a % of reinforcement within the body of the commutator such that it is isolated from the plurality of conductive sheets and Designed to substantially reduce strip-to-strip motion. . A method of operating a commutator motor that is designed to be driven - an electrical appliance for providing air flow, the method comprising the steps of: operatively associating the motor-rotating armature with the magnetic field The ratio of the strength of the magnetic field held at the armature to the intensity of the magnetic field 200916038 within the magnetic field is less than about 1 to 1; providing the armature with an increased magnetization zone corresponding to a stack of armature structures, the lamination The armature structure has an arcuate winding consisting of approximately slot 1 to approximately slot 11 and from approximately slot 12 to approximately slot 22; providing at least two carbon brushes; providing at least two with the at least two carbon brushes An operationally associated carbon-grip; utilizing a flexible conductive material designed to provide electrical connection of the carbon brushes to a commutator under variable operating conditions to provide electrical connection to a commutator under variable operating conditions And, a commutator is provided that includes a stiffening ring within the body of the commutator such that it is isolated from the plurality of conductive sheets and is designed to substantially reduce strip-to-strip motion. The method of any one of claims 26 to 32, wherein the means for providing air flow comprises an air dryer. The method of any one of claims 26 to 32, wherein the means for providing air flow comprises a hand dryer according to any one of claims 1 to 11. Airflow system. 35. An airflow system designed to enhance airflow in a hand dryer that discharges a heated air that is heated by a heating member and substantially sterilized for drying the palm of the hand. The air flow in the device is decelerated by one or more screens through which the air flow passes, wherein the system is provided with an air flow path through which the flow cross section gradually decreases along the passage 42 200916038, thereby The air flow is enhanced by the initial flow through a larger portion of the air flow path and subsequently through a smaller portion of the air flow path, and then the air flow exits the device. 36. The system of claim 35, wherein the gas flow path that tapers along the passage is disposed downstream of the heating member. 37. A system, apparatus, appliance or component as disclosed herein. 38. A method as disclosed herein. 43