JP2007196168A - Sprayer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sprayer capable of jetting a fine sprayed granule. <P>SOLUTION: In the sprayer provided with a base cap 1, a pump 2, a pressing head for operating the pump 2 and a nozzle 6, the nozzle 6 is constituted by a nozzle body 6a fixed/retained to the pressing head 5 and having an opened hole 6c on a peripheral wall of the pressing head 5, a first chip 7 arranged on an inner side of the nozzle body 6a with a clearance and a second chip 8 having an internal passage 8c connected with a discharge route of air and arranged on an inner side of the first chip 7 with a clearance. Further, openings 9, 10 in a series arrangement having the same axis L as the hole 6c of the nozzle body 6a are provided on a distal end wall 7b of the first chip 7 and a distal end wall 8b of the second chip 8 respectively. The discharge route of air is connected to the clearance t formed between the nozzle body 6a and the first chip 7. Whereas, a discharge route m of contents is connected to the clearance formed between the first chip 7 and the second chip 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sprayer suitable for spraying the contents in a container in the form of a mist, and is intended to further refine the spray particles when atomizing the contents by mixing air. is there.

  As a sprayer for finely spraying the contents, a so-called aerosol type sprayer in which a container is filled with a dispersion medium together with a pressurized medium is conventionally used. By the way, such a sprayer is expensive to manufacture, and it is normal for the pressurized medium to remain in the container even after all of the dispersion medium has been used up. Thus, it is indispensable to discharge the pressurized medium, and it takes time and effort to dispose of the pressurized medium, and there is a concern that the release of the pressurized medium into the atmosphere may lead to environmental pollution.

For this reason, recently, without using a pressurizing medium as used in aerosol type sprayers, the pump is operated by repeated operation of the pressure head to suck, pressurize, and mix the contents and air, respectively. A sprayer that sprays in the form of a mist has been proposed, and as a prior art related to this point, there is known a manual spray container that sucks up contents by blowing air at high speed from a nozzle hole and jets the sucked contents together with air (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 11-114462

  However, the sprayer that mixes and jets the air and the contents is coarser than the sprayed particles that are sprayed by an aerosol type sprayer, and there remains room for improvement in that respect.

  The subject of this invention exists in the place which proposes the novel sprayer which can make a spray particle finer in mixing air and ejecting the contents in the shape of a mist.

The present invention includes a base cap that is detachably fixed and held at the mouth of a container, and two discharge paths that are held by the base cap and are individually sucked and pressurized to discharge the contents and air in the container. And a pump head connected to the pump and operating the pump by a return operation by pushing and releasing, and contents and air discharged into the pressure head and discharged through the two discharge paths, respectively. A sprayer equipped with a nozzle that mixes each other, mists and jets to the outside,
The nozzle is fixedly held by the pressing head and has a nozzle body having a hole opened in the peripheral wall of the pressing head, and a first chip disposed inside the nozzle body with a gap therebetween,
The second chip has an internal passage that leads to the air discharge path and is arranged inside the first chip with a gap between them,
Provided in each of the tip wall of the first tip and the tip wall of the second tip is a serially arranged opening having the same axis as the hole of the nozzle body,
The air discharge path is connected to the gap between the nozzle body and the first chip, while the content discharge path is connected to the gap between the first chip and the second chip. It is the atomizer characterized.

  In the sprayer configured as described above, the pump is supported by the valve body of the check valve at least in the initial stage of the return operation from the pressing of the pressing head, and the discharge path of the contents is maintained in an open state. It is preferable to arrange a lifting rod that sucks the remaining contents into the cylinder of the pump by back suction.

  Opening that blows air before and after the opening that blows liquid is performed, and the contents and air are mixed by blowing air from the rear opening (make it into a mist). Since the contents of mixing are stirred by blowing, the spray particles become so small that they are not inferior to the spray particles ejected by the aerosol sprayer.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows an embodiment of a sprayer according to the present invention as a whole, and FIG. 2 is an enlarged view of a main part of FIG.

  In the figure, 1 is a base cap that is detachably screwed to the mouth of the container (may be engaged by undercut), 2 is suspended by the base cap 1 and sucks the contents and air in the container individually. The pump has two discharge paths for discharging under pressure.

  The pump 2 includes a small-diameter cylindrical portion 2a having an opening h connected to the suction pipe 3 for sucking the contents in the container, and a large-diameter cylindrical portion 2b integrally connected to the rear end (upper end) of the small-diameter cylindrical portion 2a. It consists of a single cylinder S with

  The small-diameter cylindrical portion 2a of the cylinder S includes a piston 2c slidable therein, a spring 2d that elastically supports the piston 2c, a poppet 2e having a valve body V at the tip (upper end), and the poppet 2e A hollow stem 2f that has a valve seat Z that engages with the valve body V and that presses the piston 2c at its lower end is disposed, thereby constituting a suction, pressurization, and discharge mechanism for the contents.

  The large-diameter cylindrical portion 2b is provided with a piston 2g that starts moving with a slight time difference when the hollow stem 2f starts to move and slides inside the hollow stem 2f in accordance with the movement of the hollow stem 2f. An air suction, pressurization, and discharge mechanism are configured.

  Reference numeral 4 denotes a valve provided on the piston 2g and opened only when air is sucked in. Reference numeral 5 denotes a pressing head connected to the pump 2. Reference numeral 6 denotes a nozzle incorporated in the pressing head 5.

The pressing head 5 has a cylindrical body 5a inner forming the discharge path m ₁ of the contents to the inwardly fitted to the rear end of the hollow stem 2f (upper part), positioned outside the inner cylindrical member 5a It has an outer cylindrical body 5b to form the air discharge path m ₂ at the inner side and in conjunction with the piston 2g rear end of the annular cylindrical portion 2g ₁ of _(upper portion).

  As shown in FIG. 2, the nozzle 6 has its main body 6a fixedly held in a laterally-oriented recess 5c formed in the peripheral wall of the pressing head 5, and a hole 6c penetrating in the inside and outside of the tip wall 6b. .

Reference numeral 7 denotes a first chip disposed inside the nozzle body 6a with a gap t therebetween. And the first chip 7 cylindrical body 7a, made from the tip wall 7b integrally connected to the cylindrical body 7a, the clearance t is linked to the discharge path m ₂ holes 6c and air. 8 is a second chip disposed at a clearance t ₁ inside the first chip 7, and the second chip 8 cylindrical body 8a, from the front end wall 8b integrally connected to the cylindrical body 8a becomes, internal passage 8c is provided leading to the air discharging channel m ₂ to the cylindrical body 8a, the clearance t ₁ is linked to the supply path m ₁ of the contents.

  Further, 9 is an opening provided in the tip wall 7b of the first chip 7, and 10 is an opening provided in the tip wall 8b of the second chip 8. The sizes of the openings 9 and 10 can be changed, but are arranged in series having the same axis L as the hole 6c.

  A check valve 11 is provided in the rear end region of the hollow stem 2f of the pump 2. The check valve 11 includes a valve seat 11a integrally formed on the inner wall of the hollow stem 2f, and a ball 11b that fits the valve seat 11a and closes the passage of the hollow stem 2f.

  In order to eject the contents in the container in the form of a mist, it is performed by repeatedly pressing the pressing head 5 and releasing it.

Suction by the small diameter tubular portion 2a by the above operation, pressurized contents as indicated by an arrow B in FIG. 2, the discharge path m ₁ from the output side of the pump 2 (the uppermost end of the hollow stem 2f), a gap t ₁ It is ejected from the opening 9 through the hole. On the other hand, the air sucked and pressurized in the large diameter cylindrical portion 2b is a gap formed between the piston 2g and the hollow stem 2f as shown by an arrow A in FIG. It passes through the gap formed between the stems 2f and is ejected from the hole 6c of the nozzle 6 through the discharge path m ₂ and the gap t. At this time, the air that has entered the internal passage 8c of the second tip 8 is ejected from the opening 10 formed in the tip wall 8b of the second tip 8 through the passage 8c.

  Since the holes 6c and the openings 9 and 10 are arranged in series having the same axis L, the contents ejected from the opening 9 are drawn out by the air ejected from the rear opening 10 thereof. Atomized and further stirred (applied with turbulent flow) by the air from the gap t toward the hole 6c to become fine spray particles and discharged from the hole 6c to the outside.

FIG. 3 shows another embodiment of the sprayer according to the present invention, in which a lifting rod 12 is integrally connected to the poppet 2e of the pump 2. As shown in FIG. When the check valve 11 is provided on the outlet side of the hollow stem 2f, the contents are likely to remain there, and it is assumed that this can be dried and solidified to prevent good spraying. In addition, the contents remaining above the check valve 11 (nozzle side) may break the balance between the air and the contents at the start of injection, resulting in coarse particles. For this reason, a lifting rod 12 is provided in the poppet 2e, and the ball 11a which is the valve body of the check valve 11 is lifted by the rod 12 at least in the initial stage of the return operation from the pressing of the pressing head 5, as shown in FIG. m ₁ is kept open. As a result, the content remaining at the site is drawn into the cylinder S of the pump 2 by back suction (a suction effect associated with releasing the negative pressure in the container), and the content does not remain. In this embodiment, the ball movement amount is set to be larger than that in the previous embodiment.

  The back surface of the tip wall 6b of the nozzle body 6a, or the front and back surfaces of the tip wall 7b of the first chip 7, and the front and back surfaces of the tip wall 8b of the second chip 8 are used to spin the contents and air. Unevenness can also be provided as appropriate.

  The air jetted from the opening 10 is assumed to have insufficient pressure at the initial stage of pump operation, so the piston 2g and 2c strokes should not be blown out until sufficient pressure and flow rate are obtained. Make adjustments.

  In the sprayer according to the present invention, when the contents are sucked through the suction pipe 3, air is also sucked from the nozzle 6, and the contents do not remain at the check valve 11.

  A sprayer capable of ejecting fine spray particles that are inferior to particles ejected by an aerosol type sprayer can be provided.

It is the figure which showed embodiment of the sprayer according to this invention. It is the figure which expanded and showed the principal part of the sprayer shown in FIG. It is the figure which showed other embodiment of the sprayer according to this invention. It is the figure which showed the use condition of the sprayer shown in FIG.

Explanation of symbols

1 Base cap 2 Pump
2a Small diameter cylinder
2b Large diameter tube
2c piston
2d spring
2e poppet
2f hollow stem
2g Piston 3 Suction tube 4 Valve 5 Pressing head
5a Inner cylinder
5b Outer cylinder 6 Nozzle
6a Nozzle body
6b Tip wall
6c hole 7 first tip
7a cylinder
7b Tip wall 8 Second tip
8a cylinder
8b Tip wall
8c Internal passage 9 Opening
10 Opening
11 Check valve
11a Valve seat
11b ball
12 Lifting rod S Cylinder V Valve body Z Valve seat
m ₁ Discharge route of contents
m ₂ air discharge path t Clearance
t ₁ gap

Claims (2)

A base cap that is detachably fixed and held at the mouth of the container, and a pump having two discharge paths that are suspended and held by the base cap and each sucks and pressurizes and discharges the contents and air in the container. A pressure head that is connected to the pump and operates the pump by a return operation by pushing and releasing, and the contents and air that are incorporated into the pressure head and discharged through the two discharge paths are mixed with each other. A sprayer comprising a nozzle that is atomized and ejected to the outside,
The nozzle is fixedly held by the pressing head and has a nozzle body having a hole opened in the peripheral wall of the pressing head, a first tip disposed with a gap inside the nozzle body, and an air A second chip having an internal passage leading to the discharge path and disposed inside the first chip with a gap therebetween;
Provided in each of the tip wall of the first tip and the tip wall of the second tip is a serially arranged opening having the same axis as the hole of the nozzle body,
The air discharge path is connected to the gap formed between the nozzle body and the first chip, while the contents are discharged into the gap formed between the first chip and the second chip. A sprayer characterized by connecting paths.   The pump lifts the valve body of the check valve at least in the initial stage of the return operation from the pressing of the pressing head to maintain the contents discharge path in an open state, and the contents remaining upstream from the pump by back suction. The sprayer according to claim 1, further comprising a lifting rod that is sucked into the cylinder.

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