Patent Application
20100320289
The present invention generally relates to a structure of spraying device, and more particularly to a spraying device that generates high speed rotating air streams to cause a water stream ejected from the spraying device to mix with the high pressure rotating air streams to generate high speed rotating impacting forces for effectively improving the effect of dust removal and also featuring rinsing the surface of an object.
A conventional cleaning device is often a manually-operated spraying device, which applies air pressure in such a way that when an operation bar is pushed/pulled, water is drawn into a spraying tube and then ejected from the spraying tube through the application of a driving force. This type of known spraying device allows only for single ejection of water and operation of the device through multiple times of pushing/pulling is effort-consuming and may be troublesome for the general consumers.
To overcome such a problem, a water spraying device that allows water to be sprayed through both pushing and pulling operations. An example is shown in Taiwan Patent Publication No. 88275, which discloses a structure composed of an outer tube, which is of a hollow tubular body having a front end opening forming therein internal threading, a cap being attached to the front end and forming a threaded hole in communication with the outer tube, the tubular body of the outer tube having an end forming external threading; a central tube, which has a front end forming an opening and a rear end that is closed, a push disk, an O-ring, a notched plate, and a piston being sequentially mounted to the front end of the tube, the tube forming two symmetrically arranged water ingresses; and a minor tube, which is tightly coupled to a rear center of a spraying head, the spraying head comprising a screw bar, the minor tube being arranged inside the outer tube with a rear end extending into the front end opening, the minor tube having an outside diameter substantially corresponding to an inside diameter of the central tube. With such an arrangement, water spraying can be realized through frontward pushing and rearward pulling of the central tube.
Although such a known structure can perform water spraying with frontward pushing and rearward pulling of the central tube, yet such a structure is of small water storage, so that in a practical application, the water sprayed can cover only a limited range with a limited amount of water. This leads to a drawback that a user must frequently replenish water. Further, since the spraying of water is realized through manually pushing and pulling the central tube, the repeated and frequent pushing and pulling may cause troubles to the user.
The primary objective of the present invention is to provide a structure of spraying device, which comprises a control handle, a first hollow barrel, a second hollow barrel, a driving unit, a spraying tube, and a liquid ejection tube. With the driving unit that is driven by high pressure air to rotate received inside the second hollow barrel, when the control handle is operated to supply high pressure air to drive the driving unit to rotate in high speed, the spraying tube is simultaneously caused to rotate with a high speed, making high pressure rotating air ejected from the spraying tube inducing repeated and rotating impacts on a surface to be cleaned to thereby improve the effect of dust removal and cleaning. Further, the liquid ejection tube is located within the spraying tube and ejects a stream of water (or cleaning agent), which is mixed with the high pressure air to generate a high speed rotating impact to also realize surface rinsing of an object.
Another objective of the present invention is to provide a structure of spraying device, wherein the first hollow barrel is coupled to a liquid storage container, which comprises a vessel that forms, in an outside surface thereof, at least one recess, which allows a user to tightly hold the vessel with the recess even though the hand is wet and slipping in order to effectively open/close the cap.
A further objective of the present invention is to provide a structure of spraying device, wherein the liquid storage container can receive therein rustproof oil, chemical agents or other solvent, whereby with the spraying tube of the sprayer ejecting air in a rotating fashion, the rustproof oil or chemical agent or other solvent can be atomized to form extremely tiny droplets for spraying on a large area of an object to thereby realize the efficacies of spraying and coating.
The foregoing objectives and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
Referring to
The control handle 11 forms one or a plurality of air inlet openings 111 for connection with an external air supply device and one or a plurality of air outlet openings 112. The air inlet opening 111 and the air outlet opening 112 are in communication with each other and a manually-operated depressible air valve 113 is arranged on a passage connecting between the air inlet opening 111 and the air outlet opening 112.
The first hollow barrel 12 has an end forming a first coupling end 121, which is connected to the air outlet opening 112 of the control handle 11 and an opposite end forming a second coupling end 122. The first hollow barrel 12 receives and retains therein a block 123, which forms an internal passage 1231, located between the first coupling end 121 and the second coupling end 122. The block 123 has an outside surface forming one or a plurality of air passageways 124 communicating between the first coupling end 121 and the second coupling end 122. The internal passage 1231 of the block 123 has an end forming a first end port 1232 that faces outward of the first hollow barrel 12 and another end of the passage 1231 opposes the second coupling end 122 and forms a second end port 1233. The first end port 1232 and the first coupling end 121 are arranged to have the openings thereof facing different directions. Further, the first hollow barrel 12 comprises a coupling portion 125 that extends outward from the opening of the second coupling end 122. The coupling portion 125 has a surface forming one or a plurality of grooves 1251 in communication with the second coupling end 122. The coupling portion 125 forms one or a plurality of bolt holes 1252. The first hollow barrel 12 forms on an outside surface thereof one or a plurality of hooking rings 126.
The second hollow barrel 13 has an end that is an open end 131 and an opposite end forming a coupling end 132 coupled to the coupling portion 125 of the first hollow barrel 12. The coupling end 132 forms one or a plurality of fastening holes 1321 respectively corresponding to the bolt holes 1252 of the first hollow barrel 12. Further, the second hollow barrel 13 forms therein an accommodation chamber 133, and also forms a first channel 1331 in an upper wall of the accommodation chamber 133 and a second channel 1332 in a lower wall of the accommodation chamber 133.
The driving unit 14 is received in the accommodation chamber 133 of the second hollow barrel 13. The driving unit 14 has two ends which extend outward to form a shaft 141. Formed through the shaft 141 is a bore 142 that extends through the driving unit 14. The driving unit 14 forms one or a plurality of slots 143, and the slots 143 respectively and movably receive therein blades 144. The driving unit 14 receives a sleeve 15 fit outside the driving unit. The sleeve 15 forms one or a plurality of first air apertures 151 and second air apertures 152. The first air apertures 151 correspond in position to the first channel 1331 of the second hollow barrel 13 and the second air apertures 152 correspond in position to the second channel 1332 of the second hollow barrel 13. The sleeve 15 has a bore having an inside diameter greater than the driving unit 14 for receiving the driving unit therein. The driving unit 14 also receives positioning seats 16, which are hollow, fit over opposite portions of the shaft 141 and tightly positioned against the sleeve 15. Each positioning seat 16 receives and retains therein one or a plurality of bearings 17 through which the shaft 141 extends and is thus supported.
The spraying tube 18 has an end that is curved and an opposite end forming a fitting portion 181 coupled to the shaft 141 of the driving unit 14.
The liquid ejection tube 19 has an end extending through and received in the bore 142 of the driving unit 14 and the spraying tube 18 and an opposite end forming a retention seat 191 coupled to the second end port 1233 inside the first hollow barrel 12.
The liquid storage container 2 comprises a vessel 21, and the vessel 21 has an outside surface forming one or a plurality of recesses 211. The vessel 21 has an open mouth to which a cap 22 is mounted. The cap 22 forms a jointing tube 23 coupled to the first end port 1232 of the first hollow barrel 12. The jointing tube 23 comprises a control valve 231, which controls the flow of liquid, mounted thereto and also comprises a liquid drawing tube 232.
Referring to
Further, the coupling portion 125 of the first hollow barrel 12 and the coupling end 132 of the second hollow barrel 13 may further receive one or a plurality of gaskets 20 interposed therebetween for more tightly coupling the first hollow barrel 12 and the second hollow barrel 13 together. Further, the bolt holes 1252 of the first hollow barrel 12 are set to correspond to the fastening holes 1321 of the second hollow barrel 13 to allow fasteners 3 (such as bolts and rivets) to sequentially extend through the bolt holes 1252 and the fastening holes 1321 for securing the first hollow barrel 12 and the second hollow barrel 13 together. The first coupling end 121 of the first hollow barrel 12 is coupled to the air outlet opening 112 of the control handle 11 through for example bolting or force fitting. The retention seat 191 of the liquid ejection tube 19 is coupled to the second end port 1233 inside the first hollow barrel 12 through for example bolting or force fitting.
Further, the jointing tube 23 of the liquid storage container 2 is coupled to the first end port 1232 of the first hollow barrel 12 through for example bolting or force fitting to joint the sprayer 1 to the liquid storage container 2.
Referring to
When the driving unit 14 of the sprayer 1 according to the present invention is driven by the air flow to rotate, the spraying tube 18 that is coupled to the driving unit 14 is also force to rotate in unison. When air is supplied from the second coupling end 122 to the second hollow barrel 13, since the bore 142 of the driving unit 14 is smaller in diameter than the second coupling end 122, air is subjected to compression to generate high speed and high pressure, whereby when the air reaches the spraying tube 18, Venturi effect is induced, which effect helps drawing the liquid contained in the liquid storage container 2 through the liquid drawing tube 232, the jointing tube 23, and the liquid ejection tube 19 for ejection outward. Thus, with the driving unit 14 driving high speed rotation of the spraying tube 18, the spraying tube 18 sprays high-pressure air in a rotating fashion for inducing repeated and rotating impacts on a surface to be cleaned thereby improving the result of dust removal and cleaning operation. Further, the liquid ejection tube 19 contained inside the spraying tube 18 ejects a stream of for example water (or cleaning agent), which is mixed with the high pressure air to generate a high speed rotating impact to also realize surface rinsing of an object.
Further, the vessel 21 of the liquid storage container 2 according to the present invention forms, in an outside surface thereof, at least one recess 211, which allows a user to tightly hold the vessel 21 even though the hand is wet and slipping in order to effectively open/close the cap 22. Further, the liquid storage container 2 can alternatively receive therein solvent or solution, such as rustproof oil or chemical agents, whereby with the spraying tube 18 of the sprayer 1 ejecting air in a rotating fashion, the rustproof oil or chemical agent or other solvent can be atomized to form extremely tiny droplets for spraying on a large area of an object to thereby realize the efficacies of spraying and coating.
Thus, the feature of the present invention is that the sprayer 1 receives therein a driving unit 14 that is operated with air flows, so that when compressed air supplied through the control handle 11 drives high speed rotation of the driving unit 14, the spraying tube 18 is simultaneously caused to rotate with a high speed, making high pressure rotating air ejected from the spraying tube 18 inducing repeated and rotating impacts on a surface to be cleaned to thereby improve the effect of dust removal and cleaning. Further, the liquid ejection tube 19 located within the spraying tube 18 also ejects a stream of water (or cleaning agent), which is mixed with the high pressure air to generate a high speed rotating impact to also realize surface rinsing of an object.
It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 098220272 | Mar 2009 | TW | national |
