A SQUARE SHAPED GUARD FOR TABLE, WALL, PEDESTAL FANS

TECHNICAL FIELD
[0001] The present subject matter described herein, relates to a fan guard for mounting on an electrically-operated axial-flow portable fan, for example, Table, Wall and Pedestal (TPW) fans. More particularly, the present fan guard is a square shaped guard having plurality of radial ribs which is being reinforced by a plurality of square shaped peripheral wire frames ensuring accuracy, productivity, and safety in course of operating the fan.
REARGROUND OF THE INVENTION
[0002] Rear ground description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Generally, table, wall, and pedestal (TPW) fan Impeller (blade) is being protected by utilizing a circular or square grill/guard. The fan guard mainly serves as a safety guard to prevent any accident, such as preventing insertion of finger into the fan and to inhibit entering of external material, for example, cloth into a fan.
[0004] In the aforementioned conventional fan guard, the wide space between the radial ribs and the square shaped peripheral frames reduces the rigidity of the fan guard in the radial direction as well as in the circumferential direction. Due to the decrement in the rigidity of the fan guard, there is high chances of accident to take place. For example, if any external material got stuck into the grills of the fan guard due to any possible reason, there is great risk of accident as there is high chances that the external material can go inside the fan guard as the space between the radial ribs got expand due to less rigidity of the fan guard.
[0005] The existing square guards comprise multiple parts which are welded at different locations to provide effect of square shape. With the multiple parts, the existing square guards have multiple joints which make the existing structure cumbersome during manufacturing and prone to failure over a time of use. For example, to obtain the square shape multiple ribs are joined in vertical and horizontal shape which requires multiple joints and corners of the square shape are achieved by joining small ribs together. With multiple joints, the existing designs of the square shaped guard do not provide aesthetic appeal to customers as well.
[0006] In order to solve the technical problems as mentioned above, there is a need of a fan guard which is highly rigid that prevents the entry of any external material, such as finger or any other material inside the fan from the fan guard and also provides the sufficient flow of air volume.
[0007] Therefore, there is a need in the art to develop a fan guard that is aesthetically better and can prevent expansion of ribs during forceful insertion of any external object. The present subject matter as explained and claimed provides a technical solution for the same. This will be achieved by firmly reinforcing all the radial ribs by plurality of peripheral frames, which not only ensures safety in course of operation, but also provides high productivity and high accuracy.
OBJECTS OF THE DISCLOSURE
[0008] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.
[0009] The principal object of the present invention is to develop a square shaped fan guard with a plurality of radial ribs reinforced by a plurality of peripheral wire frames that ensures high accuracy, high productivity, and safety in course of operating the fan.
[0010] Another object of the present invention is to firmly weld the plurality of peripheral frames with each and every radial rib that ensures safety level by preventing the entry of any external material inside the fan guard.
[0011] Another object of the present invention is to join a front fan guard and a rear fan guard by means of a wide ring made of Acrylonitrile butadiene styrene (ABS) material.
[0012] These and other objects and advantages will become more apparent when reference is made to the following description and accompanying drawings.
SUMMARY OF THE INVENTION
[0013] This summary is provided to introduce concepts related to a square shaped fan guard with plurality of radial ribs reinforced by a plurality of peripheral wire frames that helps in achieving high accuracy, productivity, and safety in course of operating the fan. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0014] In an embodiment, the present disclosure relates to a square shaped fan guard having a front fan guard and a rear fan guard for mounting on an electrically operated axial –flow fan.
[0015] In an aspect, the fan guard comprising a ring provided at center and a plurality of radial ribs protruding radially outwards from periphery of the ring at equidistance from each other. Further, a square step provided at a distance ‘R1’ from the center of the ring and a plurality of square shaped peripheral frames disposed concentrically at rear surface of the plurality of radial ribs at a pre-determined distance ‘R2’ and ‘R3’ from the center of the ring. The plurality of radial ribs bent inwardly at the pre-determined distance ‘R3’ and a square shaped peripheral frames provided at end of the plurality of radial ribs.
[0016] In an aspect, the plurality of radial ribs protruding radially outwards from the periphery of the ring at radially equidistantly from one another.
[0017] In an aspect, the plurality of square shaped peripheral frames are in the range of 2 to 5.
[0018] In an aspect, the ring is connected with the plurality of radial ribs by various welding means, such as spot welding or arc welding.
[0019] In an embodiment, the wide ring is provided to facilitate joining between the front fan guard and the rear fan guard.
[0020] In an embodiment, the wide ring is provided with a lock to firmly attach the front fan guard and the rear fan guard placed opposite to one another.
[0021] In an aspect, the lock is fastened firmly with the wide ring by means of a screw.
[0022] In an aspect, the wide ring is made of plastic material, preferably, Acrylonitrile butadiene styrene (ABS material).
[0023] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
[0025] Figure 1 illustrates an isometric view of a square shaped guard from a front end.
[0026] Figure 2 illustrates a front view of the square shaped fan guard.
[0027] Figure 3 illustrates a rear view of the square shaped fan guard.
[0028] Figure 4 illustrates a side view of the square shaped fan guard.
[0029] Figure 5 illustrates a bottom side view of the square shaped guard.
[0030] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
[0031] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0032] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0033] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes” and/or “including”, when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0034] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0035] In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include at least one of the features, either explicitly or implicitly.
[0036] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0037] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0038] The subject matter disclosed herein relates to a square shaped fan guard having high productivity, high accuracy and high level of safety. Referring to Figure 1 illustrating an isometric view of a square shaped fan guard (300) from the front end. The square shaped fan guard (300) comprising a front fan guard (100) and a rear fan guard (200) for mounting on an electrically-operated axial flow fan. The front fan guard (100) have a plurality of radial ribs (102) and a plurality of square shaped peripheral frames (104) that lie in the range of two to five. The plurality of radial ribs (102) are welded with the plurality of square shaped peripheral frames (104) in such a manner that it provides rigidity to the square shaped fan guard (300). The rigidity of the square shaped fan guard (300) facilitates in obstructing the entrance of any external material inside the fan guard (300) and also allows the movement of sufficient volume of air flowing through the fan guard. A wide ring (301) is provided to connect the front fan guard (100) with the rear fan guard (200). A lock (302) is provided in the wide ring (301) that facilitates in firmly attaching the front fan guard (100) with the rear fan guard (200).
[0039] Referring to Figure 2 illustrating the front view of the square shaped fan guard (300). The fan guard (300) comprising a ring (101) that is provided at a centre of the fan guard. The plurality of radial ribs (102) protruding radially outwards from periphery of the ring (101) are placed at equal distance from one another. The ring (101) provides rigidity to the plurality of radial ribs (102). A square step (103) is provided at a distance (R1) from the centre of the ring (101). The plurality of square shaped peripheral frames (104) lies in a range of 2 to 5 are disposed concentrically to the square step (103). The plurality of square shaped peripheral frames (104) provided at the rear surface of the plurality of radial ribs (102) and are placed at a pre-determined distance (R2, R3) from the centre of the ring (101). The plurality of radial ribs (102) bent inwardly at the pre-determined distance (R3) from the centre of the ring (101) and attached with the plurality of square shaped peripheral frames (103) through various welding means, such as spot welding or resistance welding that facilitates in increasing the rigidity of the fan guard. The square shaped peripheral frames (105) provided at end of the plurality of radial ribs (102) also provide strength to the fan guard (300).
[0040] Referring to Figure 3 illustrating the rear view of the square shaped fan guard from the rear end. The rear fan guard (200) shown in the figure 2 also ensures safety during the course of operation of fan. The structure of the rear fan guard (200) is quite similar to the front fan guard (100). The plurality of square shaped peripheral frames (203) are welded with each and every radial ribs (202) through various welding means such as spot welding or arc welding for ensuring the safety level during the course of operation of fan as it prevents entry of any external material inside the guard from the rear side of the fan. A ring (201) is provided with holes (204,205) that are used to mount motor through various fastening means, such as screw, bolt and nuts. The motor is connected to the fan having blades through a shaft. The motor provides power for rotating the fan. A handle (206) is provided to remove the fan guard (300) while cleaning the fan and the fan guard (300). The handle (206) also facilitates in placing the fan from one place to another.
[0041] Referring to Figure 4 illustrating the side view of the fan guard (300). It shows the wide ring (301) that is used to attach the front fan guard (100) and the rear fan guard (200). A lock (302) is provided at the bottom of the wide ring (301) to firmly attach the front fan guard (100) and the rear fan guard (200). The wide ring (301) is made of plastic material, preferably, Acrylonitrile butadiene styrene (ABS material).
[0042] Referring to Figure 5 illustrating the bottom view of the fan guard (300). It shows the wide ring (301) having lock (302) that is firmly fastened with the wide ring (301) by means of a screw (303).
[0043] Technical advantages: Thus, the current invention provides the square shaped fan guard having plurality of radial ribs which is being reinforced by plurality of peripheral wire frames ensuring accuracy, productivity and safety in course of operating the fan. The square shaped fan guard of the present invention also has less no. of joints that provides strength to the fan guard.
[0048] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to”, the term “having” should be interpreted as “having at least”, the term “includes” should be interpreted as “includes but is not limited to”, etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B”.
While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

WE CLAIM:

1. A square shaped fan guard (300) having a front fan guard (100) and a rear fan guard (200) for mounting on an electrically-operated axial-flow fan, the square shaped fan guard (300) comprising:
a ring (101) provided at center;
a plurality of radial ribs (102) protruding radially outwards from periphery of the ring (101) at equidistance from each other;
a square step (103) provided at distance (R1) from center of the ring (101);
a plurality of square shaped peripheral frames (104) disposed concentrically at rear surface of the plurality of radial ribs (102) at a pre-determined distance (R2, R3) from the center of the ring (101);
wherein the plurality of radial ribs (102) bent inwardly at the pre-determined distance (R3); and
a square shaped peripheral frames (105) provided at end of the plurality of radial ribs (102).
2. The square shaped fan guard (300) as claimed in claim 1, wherein the front fan guard (100) and the rear fan guard (200) are made either from polybutylene terephthalate (PBT) or acrylonitrile butadiene styrene (ABS) material.
3. The square shaped fan guard (300) as claimed in claim 1, wherein the plurality of radial ribs (102) protruding outwards from the periphery of the ring (101) are placed radially equidistantly from one another.
4. The square shaped fan guard (300) as claimed in claim 1, wherein the plurality of square shaped peripheral frames (104) are two in number.
5. The square shaped fan guard (300) as claimed in claim 1, wherein the plurality of square shaped peripheral frames (104) are three in number.
6. The square shaped fan guard (300) as claimed in claim 1, wherein the ring (101) is connected with the plurality of radial ribs (102) by means of spot welding or arc welding.
7. The square shaped fan guard (300) as claimed in claim 4, wherein a wide ring (301) is provided to facilitate joining between the front fan guard (100) and the rear fan guard (200).
8. The square shaped fan guard (300) as claimed in claim 7, wherein the wide ring (301) is provided with a lock (302) to attach the front fan guard (100) and the rear fan guard (200) opposite to one another.
9. The square shaped fan guard (300) as claimed in claim 8, wherein the lock (302) is fastened firmly with the wide ring (301) by means of a screw (303).
10. The square shaped fan guard (300) as claimed in claim 7, wherein the wide ring (301) is made of plastic material, preferably, Acrylonitrile butadiene styrene (ABS) material.