Patent Publication Number: US-2019178260-A1

Title: Fan

Description:
The invention relates to domestic fans and can be used to move air in the desk area at home, in offices, public eating places, educational establishments. 
     Desktop fans are known, in particular, DAYSON AM01, a bladeless fan with a ring equipped with nozzles, www.technopark.ru. 
     The disadvantages of desktop fans, either with a ring or with open blades, are as follows:
         the fan occupies part of the desk top and interferes with the location of other objects of use, such as cutlery, dishes, etc., stationery, computer, documents, business papers, etc., thus disturbing the user, especially if at the desk, for example, in public eating places, there are four places of use and four fans are required;   with its air flow the fan negatively affects other objects of use located on the desk top between the fan and the user, and, for example, an unstable vase with flowers or, for example, business papers, small objects may be blown off the desk top with its air flow, thus disturbing the user;   the distance from the fan to the user is ˜700 mm, therefore, a fan of increased power, dimensions and airflow with a blade diameter of more than 200 mm is required to make the air flow cover this distance;   the air flow from the fan is directed only to the user&#39;s upper body, since the desk top is located across the air flow path.       

     The advantage of desktop fans is that with a variety of user needs, including changing the position of the user at the desk, different physical conditions and clothing of the users, the fans have four possibilities to change a microclimate by directing air flow to all the points of the user&#39;s upper body local space as a result of:
         adjustment of the fan position on the desk top;   rotation of the fan in the horizontal plane;   rotation of the fan in the form of inclinations in the vertical plane;   changing the rotation speed of the blades.       

     A desk air distribution device is known, the device containing air diffuser located under the desk top and separating the incoming air into streams directed to the local zone, that is, to the space immediately around the user, patent RU 2497048. 
     The disadvantage is that the device does not have the ability to change the microclimate created, which is unacceptable for the diversity of user needs, and also that the air flow reaches only the user&#39;s lower body. 
     The advantage is that the device does not occupy part of the desk top, the air flow does not affect objects located on the desk top, the device does not disturb the user with its location. 
     The closest technical solution according to the fan capabilities is a manual mini fan, for example, USB Portable fan, see www.cena.ru. 
     Among the disadvantages of the fan there is a fact that the manual fan is a personal appliance and after applying it one have to put it somewhere, for example, on the desk top or in the bag, which disturbs the user, and the fact that it is impossible to equip desks with fans for public use, for example, in public eating places, since the fans are located on the desk top and disturb users, wherein there is a great probability for the fan to be theft. 
     The problem the invention is aimed at, is as follows. 
     Known domestic fans and ventilation systems in terms of the diversity of user needs can be divided into two groups:
         with significant abilities to change a microclimate, for example, four possibilities for a desktop fan, though it disturbs the user with its location on the desk top, affects objects located on the desk top by the air flow, is arranged at a considerable distance from the user, which requires an increase in power and dimensions of the fan, directs the air flow to the user&#39;s upper body only;   with no significant abilities to change a microclimate, for example, RU 2497048 prior art has no options, but at the same time it does not occupy a part of the desk top, the air flow does not affect objects located on the desk top, the device does not disturb the user with its position.       

     Thus, in particular, the object is to develop a fan located at the minimum distance from the user, having minimum power, exhibiting sufficient microclimate change abilities for the diverse needs of users, enabling to direct air flow to all points of the space immediately around the user, but without disturbing the user by its location on the desk top and without affecting objects located on the desk top by the air flow. 
     The technical effect, which can be achieved by solving the problem, is to reduce the distance from the fan to the user, providing the abilities for the fan to change the microclimate at the desk at all points of the space immediately around the user without disturbing the user. 
     This technical effect is achieved by the fact that the known fan for creating a microclimate in the desk area of the user is that the fan is positioned under the desk top and equipped with a device for moving the fan beyond the edge of the desk top, enabling adjustment of the spatial position of the fan. 
     Besides, the device for moving the fan beyond the edge of the desk top is made in the form of a lever rotatable in the vertical plane about the horizontal axis, the lever being connected to the fan by the rotation axis of the fan perpendicular to the horizontal axis. 
     Besides, the device is equipped with a clamp for one extreme position of the fan provided in the form of a spring latch. 
     Besides, the device is equipped with clamps in the form of a friction washer, two anti-friction washers and a compression spring therebetween for any positions of the fan about the horizontal axis, and in the form of a friction washer, an axis with a threaded section, a nut and a lock nut about the rotation axis perpendicular to the horizontal axis. 
     Besides, the device for moving the fan beyond the edge of the desk top is made in the form of a cylindrical slider capable of a reciprocating movement and a rotation about its axis, the slider being located in the guide and connected to the fan by the rotation axis perpendicular to the axis of the cylindrical slider. 
     Besides, the device is provided without retaining fan positions. 
     Besides, the device is equipped with clamps in the form of a friction radial stop, a screw and a lock nut for any positions of the fan during the reciprocating movement and rotation about the axis of the cylindrical slider, and in the form of a friction washer, two anti-friction washers and a compression spring therebetween about the rotation axis perpendicular to the axis of the cylindrical slider. 
     Besides, the device for moving the fan beyond the edge of the desk top is made in the form of a bar rotatable in the horizontal plane about the vertical axis of the bar, the bar being connected to the fan holder by the vertical axis of the holder connected to the fan by the horizontal rotation axis of the fan. 
     Besides, the device is provided without retaining fan positions. 
     Besides, the device is provided with clamps in the form of friction washers, nuts and lock nuts for any positions of the fan about the vertical axis of the bar and the vertical axis of the holder, and in the form of an additional fan casing fixedly connected with two semi-axes located on both sides about the horizontal rotation axis of the fan in the holder, the semi-axes being provided with friction washers, nuts and lock nuts. 
     Besides, the fan is a three-speed fan. 
     The essential feature “ . . . is equipped with a device for moving the fan . . . ” is expressed in general form, as in the embodiments it covers three disclosed types of movement: rotation in the vertical plane on the lever, reciprocating movement in the horizontal plane on the slider with rotation about its axis, rotation in the horizontal plane on the bar. 
     Other types of fan movement beyond the edge of the desk top are possible along all three space coordinates with many of their mutual combinations, for example, using toggle mechanisms, gears, universal ball joint, electric drives, flexible metal leg with an additional rotation axis of the fan, see www.op12.ru, MINI USB fan for a laptop, etc., but they are more complicated and bulky, and eventually achieve the same technical effect, that is, they move the fan beyond the edge of the desk top, therefore they are cited only as examples of plurality of the general concept. 
     The essential feature “ . . . is equipped with a device for moving the fan beyond the edge of the desk top . . . ” is in a causal relationship with the technical effect, as it reduces the distance from the fan to the user and as a result of movement provides the fan with abilities to change the spatial position and direct the air flow to any point in the space immediately around the user:
         without moving beyond the edge of the desk top the fan directs the air flow under the desk top similar to the closest prior art, which is not enough;   the fan moved beyond the edge of the desk top is able to direct the air flow without disturbance from the desk top to any point in the space immediately around the user, including upwards, while the fan is located at the point in space near the edge of the desk which is not occupied by other objects and the user, hence not disturbing the user;   the fan moved to its original position particularly does not disturb the user.       

     The essential feature “ . . . enabling adjustment of the spatial position of the fan” is expressed in general terms, since for each form of the essential feature “is equipped with a device for moving the fan beyond the edge of the desk top” this “ . . . ability to change the position of the fan . . . ” has its peculiarities determined just by the device for moving, including:
         rotation of the lever in the vertical plane about the horizontal axis enables adjustment of the fan position through the arc in the vertical plane,  FIG. 1, 2, 4, 5 ;   reciprocating movement of the slider with rotation about its axis enables adjustment of the fan position in a circular motion,  FIG. 6, 7 ;   rotation of the bar in the horizontal plane about the vertical axis enables adjustment of the fan position through the arc in the horizontal plane,  FIG. 8, 9 .       

     The essential feature “ . . . enabling adjustment of the spatial position of the fan” in all the embodiments, along with the movements of the device for moving, covers the types of movements able to adjust the position of the fan to change the direction of the air flow in the space immediately around the user without directing the air flow to the desk top, including up, down, right, left, forward and combination of directions and rotations in the space between these movements, therefore, providing the fan with sufficient abilities in a causal relationship with the technical effect. 
     It is the set of essential features of the claimed invention that:
         is a solution to the problem and a design concept;   ensures achieving the specified novel technical effect;   determines the novelty and the inventive step.       

    
    
     
         FIG. 1  is a side view of a device for moving the fan beyond the edge of the desk top provided in the form of a lever rotatable in the vertical plane about the horizontal axis with a clamp for one extreme position of the fan, scale 1:2. 
         FIG. 2  is a front view of the same. 
         FIG. 3  is a front view of a spring clamp of the same, scale 1:1. 
         FIG. 4  is a side view of a device for moving the fan beyond the edge of the desk top provided in the form of a lever rotatable in the vertical plane about the horizontal axis with a clamp of any position of the fan, scale 1:2. 
         FIG. 5  is a front view of the same. 
         FIG. 6  is a side view of a device for moving the fan beyond the edge of the desk top provided in the form of a cylindrical slider capable of a reciprocating movement and a rotation about its axis, with a clamp of any position of the fan, scale 1:2. 
         FIG. 7  is a top view of the same. 
         FIG. 8  is a front view of a device for moving the fan beyond the edge of the desk top provided in the form of a bar and a holder rotatable in the horizontal plane about the vertical axes with a clamp of any position of the fan, scale 1:2. 
         FIG. 9  is a top view of the same. 
     
    
    
     The data proving the possibility of production and the operability of the fan in all the embodiments with the achievement of the said technical effect are as follows. 
     In an embodiment of the essential feature “the device for moving the fan beyond the edge of the desk top is made in the form of a lever rotatable in the vertical plane about the horizontal axis, the lever being connected to the fan by the rotation axis of the fan perpendicular to the horizontal axis”, wherein “the device is equipped with a clamp for one extreme position of the fan provided in the form of a spring latch”,  FIG. 1, 2, 3 , the fan comprises a fan  1 , for which, for example, a computer fan mod. KDE1206PKV3 is used, with the dimensions of 60×60×15 mm, performance of 25 CFM, corresponding to 42,5 m 3 /h, located under the desk top  2 , a lever  3  in the form of an axis with a head, a hole made therein and a threaded section for rotation of the fan  1  perpendicular to the horizontal axis  4 , a spring latch  5  for retaining the extreme position, a bracket  6  with eyelets for connecting the device for moving with the desk top  2 , a front protective grid  7  connected to the fan  1  and a rear wall  8  with bolts  9  and nuts, wherein the rear wall  8  can be provided with a protective grid, not shown in the Fig., and provided with eyelets for the lever  3 , a diffuser  10 , which can be installed if necessary. 
     However, fans of various sizes and performances may be used, including computer fans, see www.cqam.ru. Up-to-date computer fans for amateur equipment, tables, as well as mini fans, including bladeless ones with a ring, for example, www.icover.ru, Coolguy OZ-360 fan or Clever &amp; Clean FH-01/may be used as well. 
     The fan operates as follows. 
     The fan  1  is removed from the spring latch  5 , moved to the desired position, for example, beyond the edge of the desk top  2 , turned on the fan  1  with a button, not shown in Fig., located on the backside or on the end of the desk top  2 , and the air flow is directed towards the user to the desired point, the fan  2  still being held in the same position or directed to another point and held for the required time, similarly to a manual fan; if necessary, the fan  2  is turned off and returned to its original position in the spring latch  5 . 
     This ensures the achievement of said technical effect. 
     In the form of the same essential feature, but at the same time “the device is equipped with clamps in the form of a friction washer, two anti-friction washers and a compression spring therebetween for any positions of the fan about the horizontal axis, and in the form of a friction washer, an axis with a threaded section, a nut and a lock nut about the rotation axis perpendicular to the horizontal axis”,  FIG. 4,5 , the fan comprises a fan  1 , located under the desk top  2 , a lever  3  in the form of an axis with a head, a hole and a threaded section for rotation of the fan  1  perpendicular to the horizontal axis  4 , a bracket  6 , a front protective grid  7 , a rear wall  8  with eyelets, bolts  9  and nuts, and a friction washer  11 , for example, made of retinax, ferrodo etc., two anti-friction washers  12 , for example, made of babbit etc., a compression spring  13 , a friction washer  14  of the lever  3 , a nut  15  and a lock nut. 
     At the same time, the friction washer  11  is compressed between the eyelet of the bracket  6  and the side surface of the lever  3  head, preventing movement about the horizontal axis  4  under the action of the operating fan  1  and allowing the movement of the fan  1  with a low manual force, while the compression spring  13  is located between two anti-friction washers  12 , providing the necessary compression force, determined experimentally by the selection of springs. 
     At the same time, the friction washer  14  of the lever  3  is compressed between the bottom surface of the lever  3  head and eyelet of the rear wall  8 , preventing the movement about the lever  3  under the action of the operating fan  1  and allowing the movement of the fan  1  with a low manual force, wherein the necessary compression force is provided with a proper torqueing of the nut  15  and its lock nut. 
     The fan operates similarly to the previous embodiment of  FIG. 1, 2 , but with retaining the fan in any position thus achieving said technical effect. 
     In an embodiment of the essential feature “the device for moving the fan beyond the edge of the desk top is made in the form of a cylindrical slider capable of a reciprocating movement and a rotation about its axis, the slider being located in the guide and connected to the fan by the rotation axis perpendicular to the axis of the cylindrical slider”, it is possible to perform a fan without retaining its positions and with retaining any position of the fan, differing only in the presence of clamps. 
     Without retaining the positions of the fan, the device does not contain clamps, its operation is similar to that of  FIG. 1, 2 , that is, the position of the fan is retained by the user&#39;s hand, so it is not further disclosed. 
     With retaining the position of the fan according to the same essential feature “the device is equipped with clamps in the form of a friction radial stop, a screw, a nut and a lock nut for any positions of the fan during the reciprocating movement and rotation about the axis of the cylindrical slider, and in the form of a friction washer, two anti-friction washers and a compression spring therebetween about the rotation axis perpendicular to the axis of the cylindrical slider”, the fan comprises a fan  1 , located under the desk top  2 , a cylindrical slider  16 , a guide  17  connected to the desk top  2 , a friction radial stop  18 , a screw  19 , a lock nut  20 , a rotation axis  21  perpendicular to the cylindrical slider  16  axis, a friction washer  22 , two anti-friction washers  23  and a spring  24  therebetween. 
     The fan operates as follows. 
     The fan  1  is moved beyond the edge of the desk top  2  and turned on, directing the air flow towards the user to the desired point, thereby achieving said technical effect. 
     In an embodiment of the essential feature “the device for moving the fan beyond the edge of the desk top is made in the form of a bar rotatable in the horizontal plane about the vertical axis of the bar, the bar being connected to the fan holder by the vertical axis of the holder connected to the fan by the horizontal rotation axis of the fan”, it is possible to perform a fan without retaining its positions and with retaining any position of the fan, differing only in the presence of clamps. 
     Without retaining the positions of the fan, the device does not contain clamps, it operates similar to that of  FIG. 1, 2 , that is, the position of the fan is retained by the user&#39;s hand, so it is not further disclosed. 
     With retaining the positions of the fan according to the same essential feature “the device is provided with clamps in the form of friction washers, nuts and lock nuts for any positions of the fan about the vertical axis of the bar and the vertical axis of the holder, and in the form of an additional fan casing fixedly connected with two semi-axes located on both sides, about the horizontal rotation axis of the fan in the holder, the semi-axes being provided with friction washers, nuts and lock nuts”, the fan comprises a fan  1  located under the desk top  2 , a vertical axis  25  of the bar, a vertical axis  26  of the holder, friction washers  27 , nuts  28  and lock nuts, an additional casing  29  of the fan  1 , two semi-axes  30 , fixedly connected to the additional casing  29 , friction washers  31 , nuts  32  and lock nuts. 
     The fan operates as follows. 
     The fan  1  is moved beyond the edge of the desk top  2  and turned on, directing the air flow towards the user to the desired point, thereby achieving said technical result. 
     Thus, the above data proves that the invention as claimed is intended for providing a microclimate at any point in the desk area of the user in all the embodiments of the essential features, ensuring its feasibility with the achievement of said technical effect, thus being industrially applicable.