Sprayer head assembly

Abstract

 A sprayer head assembly includes a substantially cylindrical hollow body (2) with an opening formed at one end thereof, defining a chamber (24) therein. A central circular recess (53) and four peripheral conical recesses (55) are formed on an inner wall of the other end of the cylindrical hollow body (2). Each peripheral conical recess (55) is in fluid communication with the central circular recess (53) and has a nozzle (56) through which flud is outputted. A helical slot (22) is formed in a periphery of the cylindrical hollow body (22). The sprayer head assembly further includes an adjusting member (30) displaceably received in the chamber (24). The adjusting member (30) includes a fluid passage (31) and a socket (38) for coupling with an inlet pipe (52) through which fluid is applied. A flange (32) is formed on an upper portion of the adjusting member (30) with an annular groove (33) formed therein for receiving an O-ring (4). An elastic arm (30) extends downward from the flange (32) with an adjusting knob (35) at a distal end thereof. The adjusting knob (35) is movable along the helical slot (22) to vary the volume of the chamber (24), thereby varying the output sprays.

Description

BACKGROUND OF THE INVENTION

[0001] The present invention relates to a sprayer head assembly and, more particularly, to a sprayer head assembly which is adjustable to output various spray patterns.

[0002] Current sprayers are used for dispensing water, pesticide solution, fertilizer solution, or the like, and generally output linear sprays, resulting in several drawbacks. Firstly, uniform spraying is not available since no nozzle is provided in the center of the sprayer head. Secondly, the spraying area is limited since the output sprays are linear and thus can not expand. Thirdly, the strong streams of water or pesticide solution directly impact the plants and thus injure them. Fourthly, the sprayer head has numerous nozzles which require time-consuming processing. Finally, a high pressure fluid source is required in order to obtain atomization.

[0003] Therefore, there has been a long and unfulfilled need for an improved sprayer head assembly to mitigate and/or obviate the above-mentioned problems.

SUMMARY OF THE INVENTION

[0004] A sprayer head assembly according to the present invention comprises a substantially cylindrical hollow body with an opening formed in one end thereof, defining a chamber therein. A central circular recess and four peripheral conical recesses are formed on an inner wall of the other end of the cylindrical hollow body. Each peripheral conical recess is in fluid communication with the central circular recess and has a nozzle through which fluid is outputted. A helical slot is formed on a periphery of the cylindrical hollow body.

[0005] The sprayer head assembly further includes an adjusting means displaceably received in the chamber. The adjusting means includes a fluid passage communicating with the chamber and a coupling means, such as a socket for coupling with an inlet pipe through which water or pesticide solution is applied. A flange is formed on an upper portion of the adjusting means with an annular groove formed therein for receiving a sealing means, such as an O-ring. An elastic arm extends downward from the flange with an adjusting knob at a distal end thereof.

[0006] Water or pesticide solution from the source flows through the pipe, the inner passage, the central circular recess, and the peripheral conical recess and then sprays out via the nozzles. The adjusting knob is movable along the helical slot to vary the volume of the chamber, thereby varying the patterns of the outputted sprays.

[0007] Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 

Fig. 1 is a perspective view of a sprayer head assembly in accordance with the present invention;

Fig. 2 is an exploded view of the sprayer head assembly in accordance with the present invention;

Fig. 3 is a cross-sectional view of the sprayer head assembly;

Fig. 4 is a cross-sectional view similar to Fig. 3 in which an adjusting knob of the sprayer head is in another position; and

Fig. 5 is an enlarged cross-sectional view taken along line 5-5 of Fig. 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Referring to the drawings and initially to Figs. 1 through 3, a sprayer head assembly according to the present invention comprises a substantially cylindrical hollow body 2 with an opening formed at one end thereof, defining a chamber 24 therein. Referring to Fig. 5, a central circular recess 53 and four peripheral conical recesses 55 are formed on an inner wall of the other end of the cylindrical hollow body 2. Each peripheral conical recess 55 is in fluid communication with the central circular recess 53 via a respective passage 54 and has a nozzle 56 through which fluid is outputted. A helical slot 22 is formed on a periphery of the cylindrical hollow body 2.

[0010] As clearly shown in Fig. 2, the sprayer head assembly further includes an adjusting means 30 displaceably received in the chamber 24. The adjusting means 30 includes a fluid passage 31 communicating with the chamber 24 and a coupling means, such as a socket 38 for coupling with an inlet pipe 52 through which water, pesticide solution, or fertilizer solution is applied. A flange 32 is formed on an upper portion of the adjusting means 30 with an annular groove 33 formed therein for receiving a sealing means, such as an O-ring. An elastic arm 34 extends downward from the flange 32 with an adjusting knob 35 at a distal end thereof. Alternatively, the adjusting knob 35 may directly extend from the adjusting means 30 to the helical slot 22.

[0011] As shown in Fig. 3, the adjusting knob 35 is in its lowermost position, such that the chamber 24 is in its largest volume. Water or pesticide solution from the source flows through the pipe 52, the inner passage 31, the central circular recess 53, and the peripheral conical recess 54 and then sprays out via the nozzles 56. When the adjusting knob 35 moves along the helical slot 22 to its topmost position, as can be seen in Fig. 4, the chamber 24 is in its smallest volume. The path of the water or pesticide solution is the same as that in Fig. 3, but the stream is stronger than that in Fig. 3 since the volume of the chamber 24 is reduced.

[0012] Further, two annular flanges 36 and 37 may be provided on the socket 38, contacting an inner perpheral wall of the cylindrical hollow body 2 and having an inclining angle the same as that of the helical slot 22 to provide a stable displacement of the adjusting means 30 in the cylindrical hollow body 2.

[0013] According to the above, the present invention has the following advantages:

(1) When the sprayer head assembly is used to dispense pesticide solution or fertilizer solution, turbulence occurs as the fluid flows from the central circular recess 53 into the peripheral conical recesses 55, providing a second mixing of pesticide or fertilizer;

(2) Each nozzle of the present sprayer head assembly outputs spray in a rotational manner, resulting in a circular and uniform spraying area;

(3) The particles of outputted sprays of the nozzles collide with each other in the air, breaking up into smaller particles and reducing the impact to the plants;

(4) The present sprayer head assembly is easily manufactured and is low in cost; and

(5) A low pressure head can be used as the pressure source without affecting the atomization of the fluid.

[0014] Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing the spirit and scope of the invention as hereinafter claimed.

Claims

1. A sprayer head assembly comprising:
   a substantially cylindrical hollow body (2) with an opening formed at one end thereof, defining a chamber (24) therein, a central circular recess (53) and a plurality of peripheral conical recesses (55) being formed on an inner wall of the other end of said cylindrical hollow body (2), each said peripheral conical recess (55) being in fluid communication with said central circular recess (53) and having a nozzle (56) through which fluid is outputted, a helical slot (22) being formed in a periphery of said cylindrical hollow body (2); and
   an adjusting means (30) displaceably received in said chamber (24), comprising a fluid passage (31) communicating with said chamber (24) and a coupling means (38) for coupling with an inlet pipe (52) through which fluid is applied, a flange (32) being formed on an upper portion of said adjusting means (30) with an annular groove (33) formed therein for receiving a sealing means (4), an adjusting knob (35) extending outward from a periphery of said adjusting means (30) to said helical slot (22), said adjusting means (30) being longitudinally movable in said cylindrical hollow body (2) by moving said adjusting knob (35) along said helical slot (22) to vary a volume of said chamber (24), thereby varying output sprays.

2. A sprayer head assembly as claimed in claim 1, wherein said adjusting means (30) has flanges (30, 37) formed on said periphery thereof, contacting an inner perpheral wall of said cylindrical hollow body (2) and having an inclining angle the same as that of said helical slot (22).

Drawing