CN110743723A - Atomization device - Google Patents
Atomization device Download PDFInfo
- Publication number
- CN110743723A CN110743723A CN201910971853.2A CN201910971853A CN110743723A CN 110743723 A CN110743723 A CN 110743723A CN 201910971853 A CN201910971853 A CN 201910971853A CN 110743723 A CN110743723 A CN 110743723A
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- China
- Prior art keywords
- cavity
- liquid inlet
- air inlet
- chamber
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
- B05B7/0458—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being perpendicular just upstream the mixing chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2483—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device the supplying means involving no pressure or aspiration, e.g. means involving gravity or capillarity
Abstract
The invention relates to an atomization device comprising: a spray head; the nozzle is arranged on the spray head and provided with a liquid inlet cavity and an air inlet cavity, the liquid inlet cavity is communicated with a first cavity and a second cavity, and the second cavity is communicated with the air inlet cavity; the air inlet pipeline penetrates through the spray head and is communicated with the second cavity through the air inlet cavity; and the liquid inlet pipeline penetrates through the spray head and extends into the second cavity from the first cavity, the outer wall of the liquid inlet pipeline is in sealing fit with the side wall of the first cavity, and the outer wall of the liquid inlet pipeline and the side wall of the second cavity are arranged at intervals. The atomization device has uniform water mist and can prevent the liquid drops from being frozen before being sprayed out and being incapable of atomizing.
Description
Technical Field
The invention relates to the technical field of atomization, in particular to an atomization device.
Background
The panel needs atomizing device to spray water mist to cool the local part of the panel in the production process. However, most of the existing atomization devices separate gas and liquid, and then mix and atomize the gas and the liquid in an atomization mixing chamber before spraying out, when the external temperature is too low, the liquid may freeze and cannot form tiny liquid drops, which causes the phenomena of incapability of atomization or poor atomization effect.
Disclosure of Invention
In view of the above, it is necessary to provide an atomizing device which can solve the problems of the atomizing device that the atomization is impossible and the atomization effect is poor.
An atomizing device comprising:
a spray head;
the nozzle is arranged on the spray head and provided with a liquid inlet cavity and an air inlet cavity, the liquid inlet cavity is communicated with a first cavity and a second cavity, and the second cavity is communicated with the air inlet cavity;
the air inlet pipeline penetrates through the spray head and is communicated with the second cavity through the air inlet cavity; and
and the liquid inlet pipeline penetrates through the spray head and extends into the second cavity from the first cavity, the outer wall of the liquid inlet pipeline is in sealing fit with the side wall of the first cavity, and the outer wall of the liquid inlet pipeline and the side wall of the second cavity are arranged at intervals.
Foretell atomizing device, gaseous by the chamber of admitting air get into the second chamber after, gaseous surrounding in the feed liquor pipeline outer wall that is located the second intracavity for gaseous and liquid form water smoke blowout at the feed liquor pipeline exit of nozzle mixedly, and water smoke is even, and can prevent that the liquid drop from freezing and can't atomize before the blowout.
In one embodiment, the extending direction of the air inlet cavity is perpendicular to the extending direction of the first cavity and the second cavity, and the air inlet cavity is communicated with the middle part of the second cavity.
In one embodiment, the spray head is provided with a liquid inlet channel and an air inlet channel, the liquid inlet channel is communicated with the first cavity so that the liquid inlet pipeline penetrates through the liquid inlet channel and then enters the first cavity and the second cavity, and the air inlet channel is communicated with the air inlet cavity so that the air inlet pipeline penetrates through the air inlet channel and then enters the air inlet cavity.
In one embodiment, the liquid inlet channel is perpendicular to the liquid inlet cavity, the liquid inlet pipeline includes a first branch pipe and a second branch pipe which are communicated with each other, the first branch pipe is inserted into the liquid inlet channel, and the second branch pipe is inserted into the liquid inlet cavity.
In one embodiment, the second branch pipe is arranged coaxially with the liquid inlet cavity.
In one embodiment, the nozzle is provided with a notch, the notch is communicated with the liquid inlet channel, and the first cavity and the second cavity are opened at the bottom wall of the notch, so that the second branch pipe enters the first cavity and the second cavity from the notch.
In one embodiment, the joint of the first branch pipe and the second branch pipe is in a circular arc shape, and the side wall of the notch is also in a circular arc shape.
In one embodiment, a shaft hole is formed in the spray head, the shaft hole is communicated with the liquid inlet channel and the air inlet channel, and the spray nozzle is inserted into the shaft hole.
In one embodiment, the outer wall of the air inlet pipeline is connected and sealed with the air inlet cavity and the inner wall of the air inlet channel through threads.
In one embodiment, at least one of the following is included:
the liquid inlet channel penetrates through the first side edge of the spray head to be communicated with the outside; and/or the presence of a gas in the gas,
the air inlet passage penetrates through the second side edge of the spray head to be communicated with the outside.
Drawings
Fig. 1 is an assembled perspective view of an atomizing device in the present embodiment;
FIG. 2 is an isometric view of a nozzle in the atomizing device of FIG. 1;
FIG. 3 is a top view of FIG. 1;
fig. 4 is a sectional view taken along the plane a-a of fig. 3.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of an atomizing device includes a nozzle 100, a liquid inlet pipe 200, an air inlet pipe 300, and a nozzle 400.
Referring to fig. 1, the liquid inlet pipe 200 is connected to the spray head 100, the air inlet pipe 300 is connected to the spray head 100, and the nozzle 400 is disposed on the spray head 100 to spray water mist.
Specifically, referring to fig. 4, the nozzle 100 has a liquid inlet passage 110 for receiving the liquid inlet pipe 200 and a gas inlet passage 120 for receiving the gas inlet pipe 300.
In some embodiments, the inlet passage 110 and the inlet passage 120 are parallel and spaced apart and not communicated, and both the inlet passage 110 and the inlet passage 120 extend along a first direction (i.e., a horizontal direction) to facilitate the arrangement of the pipelines and prevent the pipelines from interfering with each other during installation. In other embodiments, the liquid inlet channel 110 and the air inlet channel 120 may be disposed at an included angle and communicate with each other to meet practical requirements.
In some embodiments, referring to fig. 1, the nozzle 100 includes a first side 101 and a second side 102 opposite to each other, the liquid inlet channel 110 penetrates the first side 101 of the nozzle 100 to communicate with the outside, the air inlet channel 120 penetrates the second side 102 of the nozzle 100 to communicate with the outside, and the liquid inlet channel 110 and the air inlet channel 120 both communicate with the outside and have opposite opening directions, so as to facilitate installation of pipelines and prevent the pipelines from interfering with each other. In other embodiments, the inlet passage 110 may not extend through the first side 101 of the showerhead 100 to be hollow cylindrical, and the inlet passage 120 may not extend through the second side 102 of the showerhead 100 to be hollow cylindrical.
Referring to fig. 1, the nozzle 400 is disposed on the showerhead 100. Specifically, in some embodiments, the shaft hole 130 is formed in the nozzle 100, the shaft hole 130 extends along a second direction (i.e., a vertical direction), the shaft hole 130 is communicated with the liquid inlet channel 110 and the air inlet channel 120, and the nozzle 400 is inserted into the shaft hole 130 so that the nozzle 400 is detachably disposed in the nozzle 100, so that the nozzle 400 or the nozzle 100 can be conveniently replaced after being damaged, and resource recycling is facilitated. In other embodiments, the nozzle 400 and the showerhead 100 may be integrally formed, which is beneficial to enhance the structural strength and sealing performance.
Further, in some embodiments, the radial dimension of the shaft bore 130 is equal to the radial dimension of the nozzle 400 to prevent the nozzle 400 from loosening within the shaft bore 130, resulting in an uneven water mist emitted by the nozzle 400. In other embodiments, the radial dimension of the shaft hole 130 may be larger than the radial dimension of the nozzle 400, and the outer wall of the nozzle 400 and the inner wall of the shaft hole 130 may be connected by a pin key to fix the nozzle 400.
In some embodiments, the nozzle 400 is cylindrical and the shaft bore 130 is also circular. In other embodiments, nozzle 400 may have a rectangular parallelepiped or other irregular shape and shaft bore 130 may have a rectangular or other irregular shape to mate with nozzle 400.
Referring to fig. 2, the nozzle 400 is provided with a liquid inlet chamber 410 and an air inlet chamber 420, the liquid inlet passage 110 is communicated with the liquid inlet chamber 410 so that the liquid inlet pipeline 200 penetrates through the liquid inlet passage 110 and then enters the liquid inlet chamber 410, and the air inlet passage 120 is communicated with the air inlet chamber 420 so that the air inlet pipeline 300 penetrates through the air inlet passage 120 and then enters the air inlet chamber 420.
Specifically, in some embodiments, the liquid inlet chamber 410 is stepped, the liquid inlet chamber 410 includes a first chamber 411 and a second chamber 412 that are communicated with each other, the first chamber 411 is located above the second chamber 412, the second chamber 412 is communicated with the gas inlet chamber 420, the liquid inlet pipeline penetrates through the spray head 100 and extends into the second chamber 412 from the first chamber 411, the outer wall of the liquid inlet pipeline 200 is in sealed fit with the side wall of the first chamber 411, and the outer wall of the liquid inlet pipeline 200 is spaced from the side wall of the second chamber 412. The radial dimension of the first chamber 411 is equal to the radial dimension of the liquid inlet pipeline 200, and the radial dimension of the second chamber 412 is larger than the radial dimension of the liquid inlet pipeline 200, so that after the gas enters the second chamber 412 from the gas inlet chamber 420, the gas surrounds the outer wall of the liquid inlet pipeline 200 in the second chamber 412, so that the gas and the liquid are mixed at the outlet 413 of the liquid inlet pipeline 200 of the nozzle 400, water mist is formed and sprayed out, and the phenomenon that liquid drops are frozen before being sprayed out due to too low external temperature and cannot be sprayed out from the nozzle 400 is prevented.
In other embodiments, the liquid inlet chamber 410 may not be stepped, the radial dimension of the first chamber 411 is equal to the radial dimension of the second chamber 412, and the second chamber 412 is communicated with the gas inlet chamber 420, so that the gas and the liquid are mixed and then sprayed out from the second chamber 412, and the water mist can also be formed.
In some embodiments, the cross-section of the first cavity 411 and the second cavity 412 perpendicular to the extending direction is circular, and the first cavity 411 and the second cavity 412 are coaxially arranged along the second direction (i.e. vertical direction), that is, the cross-sectional circles of the side wall of the first cavity 411 and the side wall of the second cavity 412 form concentric circles. In other embodiments, the cross-section of the first cavity 411 and the second cavity 412 perpendicular to the extending direction may also be rectangular, oval or other irregular shapes.
In some embodiments, the first chamber 411 and the second chamber 412 extend along the second direction (i.e. vertical direction), the gas inlet chamber 420 extends along the first direction (i.e. horizontal direction), and the gas inlet chamber 420 is connected to the middle of the second chamber 412. preferably, the gas inlet chamber 420 is disposed at a distance of 2 mm from the bottom of the second chamber 412, so that the gas can generate a high-speed gas flow when being ejected to disperse the liquid into minute droplets and make the mist uniform. In other embodiments, the liquid inlet chamber 410 and the gas inlet chamber 420 may be disposed at an included angle, and the gas inlet chamber 420 is disposed at a distance greater than or less than 2 mm from the bottom of the second chamber 412, so as to meet the actual spraying requirement of the water mist.
Since the liquid inlet channel 110 is perpendicular to the liquid inlet cavity 410, the liquid inlet pipeline 200 needs to be bent by 90 degrees after penetrating through the liquid inlet channel 110 to enter the liquid inlet cavity 410, and further, referring to fig. 2, a notch 430 is formed on the nozzle 400 in order to prevent the liquid inlet pipeline 200 from being damaged due to transitional bending.
In some embodiments, referring to fig. 2, the notch 430 is U-shaped, and the opening direction of the notch 430 faces the liquid inlet channel 110, so that the notch 430 is communicated with the liquid inlet channel 110, the first cavity 411 and the second cavity 412 are opened on the bottom wall 431 of the notch 430 and extend downwards along the bottom wall 431, referring to fig. 4, the liquid inlet pipeline 200 includes a first branch pipe 210 and a second branch pipe 220 which are communicated with each other, the first branch pipe 210 is inserted into the liquid inlet channel 110, the second branch pipe 220 is inserted into the first cavity 411 and the second cavity 412, the connection 230 of the first branch pipe 210 and the second branch pipe 220 is arc-shaped, and the side wall 432 of the notch 430 is also arc-shaped, so as to prevent the notch 430 from damaging or scratching the liquid inlet pipeline 200. In other embodiments, a protection pad may be further disposed on the sidewall 432 of the gap 430 to enhance protection of the liquid inlet pipe 200, and prevent the sidewall 432 of the gap 430 from directly abutting against the liquid inlet pipe 200 to press the liquid inlet pipe 200.
In some embodiments, the second branch pipe 220 is arranged coaxially with the inlet chamber 410 to make the generated water mist more uniform. In other embodiments, the second branch pipe 220 and the liquid inlet chamber 410 may be arranged non-coaxially as long as the water mist can be generated.
Further, in some embodiments, the outer wall of the inlet conduit 300 is threaded with the inlet chamber 420 and the inner wall of the inlet passage 120 and is sealed by a sealing ring to prevent air leakage during the air supply process. In other embodiments, the outer wall of the inlet pipe 300, the inlet chamber 420 and the inner wall of the inlet passage 120 may be further provided with a sealing gasket or sealant to enhance the sealing effect.
It should be noted that, the liquid inlet pipeline 200 is used as a liquid supply pipe, please refer to fig. 4, the liquid inlet pipeline 200 has a first input end 201 and a first output end (i.e. an outlet 413 of the liquid inlet pipeline 200), the first input end 201 is connected to a liquid supply device (not shown in the figure), and the first output end is disposed at an outlet of the nozzle 400, so that external liquid provided by the liquid supply device can reach the first output end after passing through the liquid inlet pipeline 200. In some embodiments, the external liquid is purified water. In other embodiments, the external liquid is a cooling fluid, which may be one of a coolant, ethylene glycol, a mixture of ethylene glycol and water, synthetic hydrocarbon oil, and the like.
The air inlet pipeline 300 serves as an air supply pipe, the air inlet pipeline 300 is provided with a second input end 301 and a second output end 302, the second input end 301 is connected with an air supply device (not shown in the figure), and the second output end 302 extends into the air inlet cavity 420, so that external air provided by the air supply device can enter the air inlet cavity 420 after passing through the air inlet pipeline 300. The external gas is compressed air.
In the atomizing device, the liquid inlet cavity 410 is stepped, and after the gas enters the second cavity 412 from the gas inlet cavity 420, the gas surrounds the outer wall of the liquid inlet pipeline 200 in the second cavity 412, so that the gas and the liquid are mixed at the outlet 413 of the liquid inlet pipeline 200 of the nozzle 400 to form water mist for spraying, and the liquid is prevented from being frozen before being sprayed out again due to too low external temperature and cannot be sprayed out from the nozzle 400; the second branch pipe 220 is coaxially arranged with the liquid inlet cavity 410 so as to generate more uniform water mist; the outer wall of the air inlet pipeline 300 is connected and sealed with the air inlet cavity 420 and the inner wall of the air inlet channel 120 through threads, air leakage in the air supply process is prevented, the structural design is simple, and the atomization effect is good.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An atomizing device, comprising:
a spray head;
the nozzle is arranged on the spray head and provided with a liquid inlet cavity and an air inlet cavity, the liquid inlet cavity is communicated with a first cavity and a second cavity, and the second cavity is communicated with the air inlet cavity;
the air inlet pipeline penetrates through the spray head and is communicated with the second cavity through the air inlet cavity; and
and the liquid inlet pipeline penetrates through the spray head and extends into the second cavity from the first cavity, the outer wall of the liquid inlet pipeline is in sealing fit with the side wall of the first cavity, and the outer wall of the liquid inlet pipeline and the side wall of the second cavity are arranged at intervals.
2. The atomizing device according to claim 1, wherein the air inlet chamber extends in a direction perpendicular to the direction in which the first chamber and the second chamber extend, and the air inlet chamber communicates with the middle of the second chamber.
3. The atomizing device according to claim 1, wherein a liquid inlet channel and an air inlet channel are provided on the nozzle, the liquid inlet channel is communicated with the first chamber, the liquid inlet pipeline penetrates through the liquid inlet channel and enters the first chamber and the second chamber, and the air inlet channel is communicated with the air inlet chamber, so that the air inlet pipeline penetrates through the air inlet channel and enters the air inlet chamber.
4. The atomizing device according to claim 3, wherein the liquid inlet channel is perpendicular to the liquid inlet chamber, the liquid inlet channel includes a first branch pipe and a second branch pipe that are connected to each other, the first branch pipe is inserted into the liquid inlet channel, and the second branch pipe is inserted into the liquid inlet chamber.
5. The atomizing device of claim 4, wherein the second branch is disposed coaxially with the inlet chamber.
6. The atomizing device according to claim 4, wherein the nozzle has a notch, the notch communicates with the liquid inlet channel, and the first and second chambers are opened at a bottom wall of the notch, so that the second branch pipe enters the first and second chambers from the notch.
7. The atomizing device according to claim 6, wherein the junction between the first branch pipe and the second branch pipe is formed in a circular arc shape, and the side wall of the notch is also formed in a circular arc shape.
8. The atomizing device according to claim 3, wherein a shaft hole is formed in the nozzle head, the shaft hole is communicated with the liquid inlet channel and the air inlet channel, and the nozzle is inserted into the shaft hole.
9. The atomizing device of claim 1, wherein the outer wall of the air inlet pipe is in threaded connection and sealed with the air inlet cavity and the inner wall of the air inlet channel.
10. The atomizing device of claim 1, comprising at least one of:
the liquid inlet channel penetrates through the first side edge of the spray head to be communicated with the outside; alternatively, the first and second electrodes may be,
and/or the air inlet passage penetrates through the second side edge of the spray head to be communicated with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910971853.2A CN110743723A (en) | 2019-10-14 | 2019-10-14 | Atomization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910971853.2A CN110743723A (en) | 2019-10-14 | 2019-10-14 | Atomization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110743723A true CN110743723A (en) | 2020-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910971853.2A Pending CN110743723A (en) | 2019-10-14 | 2019-10-14 | Atomization device |
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| CN (1) | CN110743723A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2695842A1 (en) * | 1992-09-18 | 1994-03-25 | Bertin & Cie | Apparatus for linear spraying of a liquid, in particular for cooling. |
| US6920749B2 (en) * | 2002-03-15 | 2005-07-26 | Parker-Hannifin Corporation | Multi-function simplex/prefilmer nozzle |
| CN201257412Y (en) * | 2008-06-30 | 2009-06-17 | 珠海格力电器股份有限公司 | Sprayer |
| CN201529588U (en) * | 2009-06-11 | 2010-07-21 | 中国石油化工集团公司 | Atomizing cool-down nozzle |
| CN202070435U (en) * | 2011-05-10 | 2011-12-14 | 中冶京诚（营口）装备技术有限公司 | Air cooling double-swirl tangential external-mixing water atomizing nozzle |
| CN204107782U (en) * | 2014-10-10 | 2015-01-21 | 刘芳芳 | Tubing workpiece inner wall spray gun |
| CN206168606U (en) * | 2016-11-04 | 2017-05-17 | 深圳市洁源生物工程有限公司 | Double fluid shower nozzle |
-
2019
- 2019-10-14 CN CN201910971853.2A patent/CN110743723A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2695842A1 (en) * | 1992-09-18 | 1994-03-25 | Bertin & Cie | Apparatus for linear spraying of a liquid, in particular for cooling. |
| US6920749B2 (en) * | 2002-03-15 | 2005-07-26 | Parker-Hannifin Corporation | Multi-function simplex/prefilmer nozzle |
| CN201257412Y (en) * | 2008-06-30 | 2009-06-17 | 珠海格力电器股份有限公司 | Sprayer |
| CN201529588U (en) * | 2009-06-11 | 2010-07-21 | 中国石油化工集团公司 | Atomizing cool-down nozzle |
| CN202070435U (en) * | 2011-05-10 | 2011-12-14 | 中冶京诚（营口）装备技术有限公司 | Air cooling double-swirl tangential external-mixing water atomizing nozzle |
| CN204107782U (en) * | 2014-10-10 | 2015-01-21 | 刘芳芳 | Tubing workpiece inner wall spray gun |
| CN206168606U (en) * | 2016-11-04 | 2017-05-17 | 深圳市洁源生物工程有限公司 | Double fluid shower nozzle |
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Application publication date: 20200204 |