Range hood and volute casing thereof

A range hood includes a housing defining a first outer air vent and a second outer air vent; a volute casing disposed within the housing, including a volute casing body having a bottom plate, a top plate and a side encasing plate disposed between the bottom plate and the top plate, the volute casing body defining an outer air outlet communicated with the first outer air vent and the second outer air vent, an opening direction of the outer air outlet being orthogonal to that of the second outer air vent; a fan wheel disposed within the volute casing body; and an outer switching cover plate movable between a first position, in which the first outer air vent is opened and the second outer air vent is closed, and a second position, in which the first outer air vent is closed and the second outer air vent is opened.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a national phase entry under 35 USC § 371 of International Application PCT/CN2014/091295, filed Nov. 17, 2014, which claims the benefit of and priority to Chinese Patent Application No. 201410466253.8 filed Sep. 12, 2014 and No. 201420526495.7 filed Sep. 12, 2014, the entire disclosures of which are incorporated herein by reference.

FIELD

The present disclosure relates to a range hood and a volute casing for the range hood.

BACKGROUND

In the related art, the range hood is generally formed with a plurality of air vents, whose opening directions are orthogonal to each other, in order to make it easier to connect the range hood with air vent flues in different positions to discharge air outdoors. The range hood with a plurality of air vents has defects of a large loss of air volume and air pressure, a low efficiency of fan wheel and too much noise.

SUMMARY

The present disclosure is based on the finding of the following facts and issues by the inventors:

For example, in the related art, the range hood with a plurality of air vents is generally formed with a rear air vent and an upper air vent, and the opening direction of the rear air vent is orthogonal to that of the upper air vent. When air is discharged through the upper air vent, the air discharged from an air outlet of a volute casing of the range hood is substantially orthogonal to the upper air vent. When the air stream is discharged from the upper air vent, the air stream needs to be turned though 90 degrees, which results in a larger loss of the air volume and air pressure, reduces the efficiency of the fan wheel of the range hood and generates more noise in a vortex region.

The present disclosure seeks to solve at least one of the problems existing in the related art to at least some extent. Therefore, the present disclosure provides a range hood having advantages of less loss of air volume and air pressure, a high efficiency of fan wheel and less noise.

The present disclosure also relates to a volute casing of the range hood.

A range hood according to embodiments of a first aspect of the present disclosure includes: a housing defining a first outer air vent and a second outer air vent; a volute casing disposed within the housing, and including a volute casing body having a bottom plate, a top plate and a side encasing plate disposed between the bottom plate and the top plate, the volute casing body defining an outer air outlet communicated with the first outer air vent and the second outer air vent, and an opening direction of the outer air outlet being orthogonal to that of the second outer air vent; a fan wheel disposed within the volute casing body; and an outer switching cover plate disposed on one of the volute casing and the housing and movable between a first position, in which the first outer air vent is opened by the outer switching cover plate and the second outer air vent is closed by the outer switching cover plate, and a second position, in which the first outer air vent is closed by the outer switching cover plate and the second outer air vent is opened by the outer switching cover plate, an angle α between the outer switching cover plate in the second position and the opening direction of the second outer air vent being greater than 0 degree and less than 90 degrees.

The range hood according to embodiments of the present disclosure has advantages of less loss of air volume and air pressure, a high efficiency of fan wheel and less aerodynamic noise.

In some embodiments, an opening direction of the first outer air vent is orthogonal to the opening direction of the second outer air vent.

In some embodiments, the angle α is equal to or greater than 30 degrees and equal to or less than 60 degrees.

In some embodiments, the outer switching cover plate is disposed on the side encasing plate and pivotable between the first position and the second position.

In some embodiments, a snapping groove is formed in the side encasing plate, and the outer switching cover plate includes a plate body and a pivot which is disposed on the plate body and rotatably fitted within the snapping groove.

In some embodiments, the first outer air vent is formed in a rear wall plate of the housing, and the second outer air vent is formed in a top wall plate of the housing.

In some embodiments, the outer switching cover plate is a flat plate or a curved plate.

In some embodiments, the housing defines a cover plate position-restricting hole, the outer switching cover plate includes a plate body and a catching jaw which is disposed on the plate body and engaged within the cover plate position-restricting hole in the first position.

In some embodiments, the range hood further includes an outer air vent seal-plate, in which the housing defines an inner air vent, the volute casing body defines an inner air outlet communicated with the inner air vent, the volute casing further includes an inner switching cover plate movable between an opened position, in which the inner air outlet is opened by the inner switching cover plate, and a closed position, in which the inner air outlet is closed by the inner switching cover plate, in which the outer air vent seal-plate seals an opened one of the first outer air vent and the second outer air vent in the opened position.

In some embodiments, a shape of the inner switching cover plate is configured such that a complete volute casing curved surface is formed by the side encasing plate and a part of the inner switching cover plate in the closed position corresponding to the inner air outlet.

In some embodiments, the inner air outlet is formed in a helical curved surface of the volute casing curved surface.

In some embodiments, the side encasing plate includes a first side encasing plate and a second side encasing plate, in which a first end of the first side encasing plate is spaced apart from a first end of the second side encasing plate such that the inner air outlet is defined by the first end of the first side encasing plate, the first end of the second side encasing plate, the top plate and the bottom plate, in which a second end of the first side encasing plate is spaced apart from a second end of the second side encasing plate such that the outer air outlet is defined by the second end of the first side encasing plate, the second end of the second side encasing plate, the top plate and the bottom plate.

In some embodiments, a first position-restricting groove is formed in the first end of the first side encasing plate, a second position-restricting groove is formed in the first end of the second side encasing plate, the first end of the inner switching cover plate is engaged within the first position-restricting groove in the closed position, and the second end of the inner switching cover plate is engaged within the second position-restricting groove in the opened position.

In some embodiments, the inner switching cover plate clings to the side encasing plate closely during moving between the opened position and the closed position.

In some embodiments, the bottom plate defines a chute penetrating therethrough in a thickness direction thereof, the inner switching cover plate is slidably fitted within the chute, the inner switching cover plate is provided with a snapping projection on the bottom plate and an operation portion which is below the bottom plate for moving the inner switching cover plate along the chute.

In some embodiments, the bottom plate is provided with a first position-restricting column and a second position-restricting column thereon, the snapping projection is abutted against the first position-restricting column in the closed position, and the snapping projection is abutted against the second position-restricting column in the opened position.

In some embodiments, the bottom plate is provided with a first position-restricting boss and a second position-restricting boss thereon, the operation portion defines a first position-restricting hole and a second position-restricting hole therein, the first position-restricting boss is engaged within the first position-restricting hole in the closed position, and the second position-restricting boss is engaged within the second position-restricting hole in the opened position.

A volute casing according to embodiments of a second aspect of the present disclosure includes: a volute casing body including a bottom plate, a top plate and a side encasing plate disposed between the bottom plate and the top plate, the volute casing body defining a first outer air outlet and a second outer air outlet, and an opening direction of the first outer air outlet being orthogonal to that of the second outer air outlet; and an outer switching cover plate disposed on the volute casing body and movable between a first position, in which the first outer air outlet is opened by the outer switching cover plate and the second outer air outlet is closed by the outer switching cover plate, and a second position, in which the first outer air outlet is closed by the outer switching cover plate and the second outer air outlet is opened by the outer switching cover plate, an angle α between the outer switching cover plate in the second position and the opening direction of the second outer air outlet being greater than 0 degree and less than 90 degrees.

In some embodiments, the angle α is equal to or greater than 30 degrees and equal to or less than 60 degrees.

REFERENCE NUMERALS

DETAILED DESCRIPTION

Embodiments of the present disclosure will be described in detail and examples of the embodiments will be illustrated in the drawings, where same or similar reference numerals are used to indicate same or similar members or members with same or similar functions. The embodiments described herein with reference to drawings are explanatory, which are used to illustrate the present disclosure, but shall not be construed to limit the present disclosure.

The range hood100according to embodiments of the present disclosure is described with reference toFIG. 1-25. As shown inFIG. 1-25, the range hood100according to embodiments of the present disclosure includes a housing20, a volute casing1, a fan wheel30and an outer switching cover plate40.

The housing20is formed with a first outer air vent201and a second outer air vent202therein. The volute casing1is disposed within the housing20, and includes a volute casing body10. The volute casing body10includes a bottom plate101, a top plate106and a side encasing plate102disposed between the bottom plate101and the top plate106. In this embodiment, the top plate106of the volute casing body10is formed by a part of the top wall plate205of the housing20. The volute casing body10is formed with an outer air outlet105communicated with the first outer air vent201and the second outer air vent202, an opening direction of the outer air outlet105is substantially orthogonal to that of second outer air vent202. Herein, it should be understood broadly, for example, an angle between the opening direction of the outer air outlet105and the opening direction of second outer air vent202may be in the range of (90±10) degrees. The fan wheel30is disposed in the volute casing1, and may be actuated by an electric motor (not shown).

The outer switching cover plate40may be disposed on the volute casing1or the housing20and movable between a first position (as shown inFIG. 4andFIG. 5), in which the first outer air vent201is opened by the outer switching cover plate40and the second outer air vent202is closed by the outer switching cover plate40, and a second position (as shown inFIG. 7andFIG. 8), in which the first outer air vent201is closed by the outer switching cover plate40and the second outer air vent202is opened by the outer switching cover plate40. An angle α between the outer switching cover plate40in the second position and the opening direction of the second outer air vent202is greater than 0 degree and less than 90 degrees.

In other words, the outer switching cover plate40may be moved between the first position in which the outer air outlet105is communicated with the first outer air vent201and separated from the second outer air vent202and the second position in which the outer air outlet105is separated from the first outer air vent201and communicated with the second outer air vent202. In the second position, the outer switching cover plate40is tilted relative to the opening direction S2of the second outer air vent202, the angle α between them is greater than 0 degree and less than 90 degrees. More preferably, the angle α is equal to or greater than 30 degrees and equal to or less than 60 degrees.

In some embodiments, an opening direction S1of the first outer air vent201is substantially orthogonal to the opening direction S2of the second outer air vent202.

In the following, unless specified otherwise, the first outer air vent201is formed in a rear wall plate206of the housing20and opened backwards, and the second outer air vent202is formed in a top wall plate205of the housing20and opened upwards, which is taken for example. Therefore, the first outer air vent201also may be called a rear outer air vent, and the second outer air vent202also may be called an upper outer air vent. It should be understood that the first outer air vent201may be formed in a side wall plate207of the housing20and the second outer air vent202may be formed in the top wall plate205of the housing20. Alternatively, the first outer air vent201may be formed in the side wall plate207of the housing20and the second outer air vent202may be formed in the rear wall plate206of the housing20.

The range hood100according to embodiments of the present disclosure may discharge air outdoors through the first outer air vent201or the second outer air vent202. When the outer switching cover plate40opens the first outer air vent201and closes the second outer air vent202, the range hood100may discharge air backwards through the first outer air vent201. When the outer switching cover plate40opens the second outer air vent202and closes the first outer air vent201, the range hood100may discharge air upwards through the second outer air vent202.

In the second position, the outer switching cover plate40is disposed obliquely, i.e. the angle α between the outer switching cover plate40and the opening direction S2(an upward direction inFIG. 3) of the second outer air vent202is greater than 0 degree and less than 90 degrees. Thus, the outer switching cover plate40may form a drainage slope to guide air to flow upwards and discharge air through the second outer air vent202. It is possible to prevent air streams from turning through 90 degrees because the outer switching cover plate40is parallel to the second outer air vent202(i.e. perpendicular to the opening direction S1of the first outer air vent201and an air stream discharged from the outer air outlet105) in the related art, which may greatly reduce the flow loss of the air stream, improve the efficiency of the fan wheel, and reduce a vortex region in order to reduce aerodynamic noise. That is, the outer switching cover plate40in the second position is further used as a drainage plate.

With the range hood100according to embodiments of the present disclosure, by disposing the outer switching cover plate40in the second position obliquely relative to the second outer air vent202, the outer switching cover plate40may form a drainage slope to guide the air to flow upwards to prevent air streams from turning through 90 degrees. Thus, it is possible to reduce the flow loss of the stream, improve the efficiency of the fan wheel, and reduce the vortex region in order to reduce aerodynamic noise.

Therefore, the range hood100according to embodiments of the present disclosure has advantages of less loss of air volume and air pressure, a high efficiency of the fan wheel and less aerodynamic noise.

The range hood100according to some specific embodiments of the present disclosure is described below.

As shown inFIGS. 1-12, in some specific embodiments, the range hood100includes a housing20, a volute casing1, a fan wheel30and an outer switching cover plate40.

The volute casing1includes a volute casing body10, and the volute casing body10includes a bottom plate101, a top plate106and a side encasing plate102disposed between the bottom plate101and the top plate106. The outer switching cover plate40is disposed on the side encasing plate102and pivotable between the first position and the second position.

The top plate106of the volute casing body10may be formed by a part of the top wall plate205of the housing20.

As shown inFIGS. 10-12, the outer switching cover plate40includes a plate body401, and a pivot402and a catching jaw403disposed on the plate body401. The side encasing plate102is formed with a snapping groove1025, which is opened upwards. The pivot402is rotatably fitted within the snapping groove1025, so that the outer switching cover plate40may be rotatably mounted on the side encasing plate102.

A first free end10232of two free ends of the side encasing plate102is formed with a snapping groove1025therein, and a second free end10242of the two free ends of the side encasing plate102is formed with a snapping groove1025therein. There are two pivots402disposed on the plate body401, one of the pivots402is rotatably fitted within the snapping groove1025in the first free end10232, and the other one of the pivots402is rotatably fitted within the snapping groove1025in the second free end10242.

As shown inFIGS. 1, 4-6, 8-10, the housing20is formed with a cover plate position-restricting hole204therein. The catching jaw403is engaged within the cover plate position-restricting hole204in the first position. Thus, the outer switching cover plate40may be stably maintained in the first position, in order to prevent the outer air outlet105from being closed when the outer air outlet105is used to discharge air outdoors.

The cover plate position-restricting hole204may be a through hole, i.e. the cover plate position-restricting hole204may penetrate through the top wall plate205of the housing20in an up-down direction. There may be a plurality of the catching jaws403and a plurality of the cover plate position-restricting holes204. A plurality of catching jaws403may be engaged within a plurality of the cover plate position-restricting holes204in one-to-one correspondence in the first position. Thus, the outer switching cover plate40may be held stably in the first position.

The outer switching cover plate40may be a flat plate or a curved plate. The outer switching cover plate40is disposed obliquely in the second position so that the outer switching cover plate40may form a drainage slope. That is, in the second position, a surface of the outer switching cover plate40facing an air stream discharged from the outer air outlet105may form a drainage surface404.

As described above, in the second position, the angle between the outer switching cover plate40and an exit direction of the second outer air vent202is greater than 0 degree and less than 90 degrees, more preferably, equal to or greater than 30 degrees and less than 60 degrees, i.e., the angle between the outer switching cover plate40and the bottom plate101is equal to or greater than 120 degrees and equal to or less than 150 degrees. Thus, it is possible to further reduce the flow loss of the air stream, improve the efficiency of the fan wheel, and further reduce the vortex region in order to further reduce aerodynamic noise.

In the above embodiments, the outer switching cover plate40may be pivotably disposed on the side encasing plate102, and the outer air outlet105is opened backwards and upwards. Thus, in the first position, the outer switching cover plate40opens a rear opening of the outer air outlet105and the first outer air vent201(i.e. the rear opening of the outer air outlet105is communicated with the first outer air vent201), while the outer switching cover plate40closes an upper opening of the outer air outlet105and the second outer air vent202(i.e. the upper opening of the outer air outlet105is separated from the second outer air vent202). In the second position, the outer switching cover plate40closes the rear opening of the outer air outlet105and the first outer air vent201(i.e. the rear opening of the outer air outlet105is separated from the first outer air vent201), while the outer switching cover plate40opens the upper opening of the outer air outlet105and the second outer air vent202(i.e. the upper opening of the outer air outlet105is communicated with the second outer air vent202).

The range hood100according to a further specific embodiment of the present disclosure will be described below with reference toFIGS. 13-25. As shown inFIGS. 13-25, the range hood100includes a housing20, a volute casing1, a fan wheel30, an outer switching cover plate40and an outer air vent seal-plate41.

As shown inFIG. 13, the housing20is formed with a first outer air vent201, a second outer air vent202and an inner air vent203therein. As shown inFIG. 14, the volute casing1includes a volute casing body10and an inner switching cover plate103. The volute casing body10includes a bottom plate101, a top plate and a side encasing plate102disposed between the bottom plate101and the top plate. The volute casing1is formed with an outer air outlet105communicated with the first outer air vent201and the second outer air vent202, and an inner air outlet104communicated with the inner air vent203.

The inner switching cover plate103is movable between an opened position, in which the inner air outlet104is opened by the inner switching cover plate103, and a closed position, in which the inner air outlet104is closed by the inner switching cover plate103. In the opened position, the outer air vent seal-plate41seals an opened one of the first outer air vent201and the second outer air vent202.

In other words, in this embodiment, the range hood100has three air discharging modes: an inward air discharging mode of discharging air indoors from the inner air outlet104and the inner air vent203, a backward air discharging mode of discharging air outdoors from an outer air outlet105and the first outer air vent201, and an upward air discharging mode of discharging air outdoors from the outer air outlet105and the second outer air vent202.

For example, in the inward air discharging mode, the inner switching cover plate103is in the opened position. If the outer switching cover plate40is in the first position (i.e. the first outer air vent201is opened and the second outer air vent202is closed), the outer air vent seal-plate41needs to seal the first outer air vent201. If the outer switching cover plate40is in the second position (i.e. the first outer air vent201is closed and the second outer air vent202is opened), the outer air vent seal-plate41needs to seal the second outer air vent202.

In the backward air discharging mode, the inner switching cover plate103is in the closed position, and the outer switching cover plate40is in the first position (i.e. the first outer air vent201is opened and the second outer air vent202is closed).

In the upward air discharging mode, the inner switching cover plate103is in the closed position, and the outer switching cover plate40is in the second position (i.e. the first outer air vent201is closed and the second outer air vent202is opened).

Preferably, a shape of the inner switching cover plate30is configured such that in the closed position, a complete volute casing curved surface is formed by the side encasing plate102and a part of the inner switching cover plate103corresponding to the inner air outlet104. More preferably, the inner air outlet104is formed in a helical curved surface of the volute casing curved surface.

That is, in the closed position, a part of the inner switching cover plate103for closing the inner air outlet104forms a complete volute casing curved surface with the side encasing plate102. In other words, the inner air outlet104may be formed by cutting off a part of the side encasing plate102, the part of the side encasing plate102is equivalent to the inner switching cover plate103or the part of the inner switching cover plate103corresponding to the inner air outlet104.

According to embodiments of the present disclosure, the inner switching cover plate103may be used to open or close the inner air outlet104by providing the inner switching cover plate103movable between the opened position and the closed position. A complete volute casing curved surface is formed by a part of the inner switching cover plate30in the closed position corresponding to the inner air outlet104and the side encasing plate102. Therefore, when the range hood100discharges air outdoors, the volute casing curved surface of the volute casing1may remain complete and will not be broken by the inner air outlet104, so as to greatly reduce the flow loss of the air stream and improve the efficiency of the fan wheel of the range hood100.

Moreover, the length of the air flue between the inner air outlet104and the inner air vent203may be reduced or there is even no need for an air flue by providing the inner switching cover plate103for opening or closing the inner air outlet104. Therefore, it is possible to reduce the flow loss of the air stream and improve the efficiency of the fan wheel of the range hood100.

As shown inFIG. 13, in one embodiment, the side encasing plate102includes a first side encasing plate1023and a second side encasing plate1024. A first end10231of the first side encasing plate1023is spaced apart from a first end10241of the second side encasing plate1024so as to define the inner air outlet104, and a second end10232of the first side encasing plate1023is spaced apart from a second end10242of the second side encasing plate1024so as to define the outer air outlet105.

Specifically, a front end of the first side encasing plate1023is spaced apart from a front end of the second side encasing plate1024so as to form the inner air outlet104, and a rear end of the first side encasing plate1023is spaced apart from a rear end of the second side encasing plate1024so as to form the outer air outlet105. The front-rear direction is shown by an arrow J inFIG. 22.

As shown inFIG. 18andFIG. 22, in one specific embodiment of the present disclosure, the inner air outlet104is away from the outer air outlet105in a circumferential direction of the side encasing plate102.

As shown inFIG. 15andFIG. 19, the first end10231of the first side encasing plate1023is formed with a first position-restricting groove1021, and the first end10241of the second side encasing plate1024is formed with a second position-restricting groove1022. The first end1036of the inner switching cover plate103is engaged within the first position-restricting groove1021in the closed position, and the second end1037of the inner switching cover plate103is engaged within the second position-restricting groove1022in the opened position.

The first end10231of the first side encasing plate1023is formed with the first position-restricting groove1021therein and the first end1036of the inner switching cover plate103is engaged within the first position-restricting groove1021in the closed position, such that the inner air outlet104may be completely closed so as to prevent the air from leaking through the inner air outlet104.

The first end10241of the second side encasing plate1024is formed with the second position-restricting groove1022therein and the second end1037of the inner switching cover plate103is engaged within the second position-restricting groove1022in the opened position, such that the inner switching cover plate103may remain in the opened position stably. Thus, the inner air outlet104may be prevented from being closed when air is discharged indoors.

Advantageously, as shown inFIG. 14andFIG. 18, the shape of the inner switching cover plate103is adapted to the shape of a part of the side encasing plate102. The inner switching cover plate103is attached to the side encasing plate102when moving in the circumferential direction of the side encasing plate102.

As shown inFIGS. 16-18, the bottom plate101is formed with a chute1011therein. The inner switching cover plate103is slidably fitted within the chute1011, so that the inner switching cover plate103is disposed on the bottom plate101and movable between the opened position in which the inner air outlet104is opened and the closed position in which the inner air outlet104is closed.

In some embodiments, the chute1011may penetrate through the bottom plate101in a thickness direction of the bottom plate101. The inner switching cover plate103is provided with a snapping projection1033on the bottom plate101and an operation portion1032below the bottom plate101for moving the inner switching cover plate103along the chute1011. In other words, the bottom plate101may be clamped between the snapping projection1033and the operation portion1032, and a user may drive the inner switching cover plate103to move by holding the operation portion1032.

As shown inFIGS. 16-17, and 20-21, the bottom plate101is provided with a first position-restricting boss1014and a second position-restricting boss1015thereon, the operation portion1032is formed with a first position-restricting hole1034and a second position-restricting hole1035therein, the first position-restricting boss1014is engaged within the first position-restricting hole1034in the closed position, and the second position-restricting boss1015is engaged within the second position-restricting hole1035in the opened position. Therefore, the inner switching cover plate103may remain in the closed position or the opened position stably, such that the inner air outlet104may be prevented from being opened when air is discharged outdoors and prevented from being closed when air is discharged indoors.

Specifically, both of the first position-restricting boss1014and the second position-restricting boss1015are disposed on the lower surface of the bottom plate101, the first position-restricting hole1034and the second position-restricting hole1035both penetrate through the operation portion1032in the up-down direction. The up-down direction is shown by an arrow I inFIG. 2andFIG. 23.

As shown inFIGS. 18-19, in one embodiment of the present disclosure, the bottom plate101is provided with a first position-restricting column1012and a second position-restricting column1013thereon, which may limit the first switching cover plate103to move between the side encasing plate102and the first and second position-restricting columns1012,1013. Therefore, the first switching cover plate103may be prevented from swinging in a direction away from the side encasing plate102to perform a guiding function when the inner air outlet104is opened or closed.

Specifically, as shown inFIG. 19, the front wall of the second position-restricting groove1022is rolled up in a direction away from the second position-restricting groove1022so as to form the second position-restricting column1013.

In the specification, it is to be understood that terms such as “central,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumference” should be construed to refer to the orientation as then described or as shown in the drawings under discussion. These relative terms are for convenience of description and do not require that the present disclosure be constructed or operated in a particular orientation.

Reference throughout this specification to “an embodiment,” “some embodiments,” “an example,” “a specific example,” or “some examples,” means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. Thus, the appearances of the phrases in various places throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art may combine and composite different embodiments or examples and features of various embodiments or examples embodiment described in the description with no conflicting situation.

Although explanatory embodiments have been shown and described, it would be appreciated by those skilled in the art that the above embodiments are exemplary and cannot be construed to limit the present disclosure, and changes, alternatives, and modifications may be made in the embodiments within the scope of the present disclosure.