CN110665669A - Low-aerodynamic-resistance throttling unit atomization device - Google Patents
Low-aerodynamic-resistance throttling unit atomization device Download PDFInfo
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- CN110665669A CN110665669A CN201910822897.9A CN201910822897A CN110665669A CN 110665669 A CN110665669 A CN 110665669A CN 201910822897 A CN201910822897 A CN 201910822897A CN 110665669 A CN110665669 A CN 110665669A
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- pipe
- inlet pipe
- groove
- water containing
- throttling unit
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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
- B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
- B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
- B05B7/265—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device the liquid being fed by gravity, or sucked into the gas
Abstract
The invention discloses an atomization device with a low aerodynamic resistance throttling unit, which comprises an atomization component and a water containing shell sleeved outside the atomization component, wherein a water containing cavity is formed between the water containing shell and the atomization component; the atomization assembly comprises an inlet pipe, a water drop type throttling unit, a porous pipe and an outlet pipe which are sequentially arranged according to the flowing direction of high-pressure gas after entering, wherein a first step surface is arranged at the first end of the inlet pipe along the inner wall of the inlet pipe in a circle, and the second end of the inlet pipe is connected with a high-pressure gas source; the first end of the outlet pipe is provided with a second step surface along the inner wall in a circle, and the second end of the outlet pipe is a spray outlet; the first end of the inlet pipe is opposite to the first end of the outlet pipe, and the water drop type throttling unit and the porous pipe are positioned between the first step surface and the second step surface; one end of the water containing shell is sleeved on the outer wall of the inlet pipe, and the other end of the water containing shell is sleeved on the outer wall of the outlet pipe. Compared with a hole type and ball type throttling unit, the atomizing device can further generate larger negative pressure, has stronger water absorption and reduces energy consumption.
Description
Technical Field
The invention belongs to the technical field of fluid machinery and gas-liquid two-phase flow, and particularly relates to a low-aerodynamic-resistance throttling unit atomization device.
Background
The atomization device is a device which atomizes and sprays liquid, and liquid particles are uniformly suspended in the air. The air-conditioning system is widely applied to modern life and industry, and can be widely applied to medical instruments for atomization and cooling, air humidification, farmland irrigation and respiratory disease treatment in summer in cities.
Currently, the nebulizers generally available on the market are mainly compression nebulizers, and are mostly applied to the medical field. The air compression type atomizer obtains high-speed gas through compressed air, negative pressure generated along with the high-speed gas can attract liquid to flow in, and then two phases are mixed and collide with each other to generate high-speed spraying finally.
Although the development of atomization technology in China is more and more mature, most atomizers in the market still face the following problems: (1) the atomized particles of the atomizer of the spherical throttling unit are large, uneven and easy to collide and combine, so that the use risk exists for patients with respiratory diseases; (2) the atomizer of the orifice type throttling unit has low water absorption and small spray flow in unit time, which means that the same cooling or dust collection effect is achieved, the time consumption is long, and the energy consumption is high. Most of the existing atomization units are hole-shaped or spherical, the atomization result is strong in water absorption performance and poor in atomization performance, or the atomization performance is strong and the water absorption performance is poor, and the two advantages cannot be well compatible.
Disclosure of Invention
The invention aims to provide an atomization device with a low-aerodynamic resistance throttling unit, which can further generate larger negative pressure, has stronger water absorption and reduces energy consumption compared with a hole-type throttling unit and a ball-type throttling unit.
The invention adopts the technical scheme that the low-aerodynamic resistance throttling unit atomization device comprises an atomization component and a water containing shell sleeved outside the atomization component, wherein a water containing cavity is formed between the water containing shell and the atomization component; the atomization assembly comprises an inlet pipe, a water drop type throttling unit, a porous pipe and an outlet pipe which are sequentially arranged according to the flowing direction of high-pressure gas after entering, wherein a first step surface is arranged at the first end of the inlet pipe along the inner wall of the inlet pipe in a circle, and the second end of the inlet pipe is connected with a high-pressure gas source; the first end of the outlet pipe is provided with a second step surface along the inner wall in a circle, and the second end of the outlet pipe is a spray outlet; the first end of the inlet pipe is opposite to the first end of the outlet pipe, and the water drop type throttling unit and the porous pipe are positioned between the first step surface and the second step surface; one end of the water containing shell is sleeved on the outer wall of the inlet pipe, and the other end of the water containing shell is sleeved on the outer wall of the outlet pipe; the water containing shell is respectively in interference fit with the inlet pipe and the outlet pipe, and the end parts of the two ends of the porous pipe are respectively in interference fit with the inlet pipe and the outlet pipe; the pipe section of the porous pipe which is not contacted with the inlet pipe and the outlet pipe and the water containing shell form a water containing cavity together, and the water containing shell is connected with a water source.
The present invention is also characterized in that,
the water drop type throttling unit comprises a hemisphere assembly and a cone assembly connected with the hemisphere assembly, the connection part of the hemisphere assembly and the cone assembly is smooth and tangent, an annular mounting seat is further sleeved on the periphery of the hemisphere assembly and connected with the outer wall of the hemisphere assembly through two mounting rods, and the annular mounting seat is located between the first step face and one end of the perforated pipe.
The ratio of the cross-sectional area of the hemispherical assembly to the diameter of the lumen cross-section of the inlet tube was 0.429.
The holes on the wall of the porous pipe are uniformly distributed.
The water containing shell comprises a tubular shell and a water inlet pipe, a fifth groove is formed in the circumferential direction of the inner wall of the tubular shell, the fifth groove and a pipe section, which is not in contact with the inlet pipe and the outlet pipe, on the porous pipe form a water containing cavity together, one end of the water inlet pipe is connected with the side wall of the tubular shell and communicated with the water containing cavity, and the other end of the water inlet pipe is connected with a water source.
A first groove is formed in the circumferential direction of the outer wall of the inlet pipe, a second groove is formed in the circumferential direction of the outer wall of the outlet pipe, and a third groove and a fourth groove are formed in the circumferential direction of the inner wall of the tubular shell; the cross sections of the first groove, the second groove, the third groove and the fourth groove are semicircular, the first groove and the third groove are correspondingly matched in position, and a first sealing ring is arranged in a space formed by combining the first groove and the third groove; the second groove and the fourth groove are correspondingly matched in position, and a second sealing ring is arranged in a space formed by combining the second groove and the fourth groove.
The first sealing ring and the second sealing ring are both sealing rubber rings.
The invention has the advantages that when high-speed high-pressure gas is introduced from the inlet pipe and passes through the water drop type throttling unit, negative pressure is formed in the water containing cavity, so that liquid is automatically sucked into the water containing cavity through the porous pipe and is further smashed into small liquid drops by the high-speed gas, and the small liquid drops are discharged from the outlet pipe together under the wrapping of the gas.
Drawings
FIG. 1 is a schematic structural diagram of an atomizing device with a low aerodynamic resistance throttling unit according to the invention;
FIG. 2 is a front cross-sectional view of an atomizing device of a low aerodynamic resistance throttling unit of the present invention;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
fig. 5 is a front view of the water drop type throttling unit;
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a graph of atomizer pressure simulations for three types of throttling units;
in fig. 7, a graph (a) is a simulation graph of the atomizer pressure with the orifice type of the throttling unit; the diagram (b) is a pressure simulation diagram of the atomizer with a spherical throttling unit; FIG. (c) is a pressure simulation diagram of the atomizing device of the throttling unit of the present invention;
FIG. 8 is a graph of atomizer velocity simulations for three types of throttling units;
in fig. 8, a graph (a) is a velocity simulation graph of an atomizer in which the throttling unit is a hole type; the diagram (b) is a speed simulation diagram of the atomizer with a spherical throttling unit; figure (c) is a velocity simulation plot for a throttling unit atomizer of the present invention;
FIG. 9 is a graph comparing the effect of water droplet type throttling units having different ratios of the cross-sectional area of the hemispherical assembly to the cross-sectional area of the lumen of the inlet tube on water absorption under the same operating conditions.
In the figure, 1, an inlet pipe, 2, a first sealing ring, 3, a water drop type throttling unit, 4, a porous pipe, 5, a water containing shell, 6, a second sealing ring, 7, an outlet pipe, 8, a first groove, 9, a second groove, 10, a third groove, 11 and a fourth groove are arranged;
1-1. a first step surface;
3-1, a hemisphere component, 3-2, a cone component and 3-3, an annular mounting seat;
5-1 parts of a tubular shell, 5-2 parts of a water inlet pipe, and 5-3 parts of a fifth groove;
7-1, a second step surface.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to an atomization device with a low aerodynamic resistance throttling unit, which comprises an atomization component and a water containing shell 5 sleeved outside the atomization component, wherein a water containing cavity is formed between the water containing shell 5 and the atomization component, and the water containing cavity is formed between the water containing shell 5 and the atomization component; the atomization assembly comprises an inlet pipe 1, a water drop type throttling unit 3, a porous pipe 4 and an outlet pipe 7 which are sequentially arranged in the flowing direction of high-pressure gas after entering, wherein a first step surface 1-1 is arranged at the first end of the inlet pipe 1 along the inner wall in a circle, and the second end of the inlet pipe 1 is connected with a high-pressure gas source; a first end of the outlet pipe 7 is provided with a second step surface 7-1 along the inner wall in a circle, and a second end of the outlet pipe 7 is a spray outlet; the first end of the inlet pipe 1 is opposite to the first end of the outlet pipe 7, and the water drop type throttling unit 3 and the porous pipe 4 are positioned between the first step surface 1-1 and the second step surface 7-1; one end of the water containing shell 5 is sleeved on the outer wall of the inlet pipe 1, and the other end of the water containing shell 5 is sleeved on the outer wall of the outlet pipe 7; the water containing shell 5 is respectively in interference fit with the inlet pipe 1 and the outlet pipe 7, and the end parts of the two ends of the porous pipe 4 are respectively in interference fit with the inlet pipe 1 and the outlet pipe 7; the section of the porous pipe 4 which is not contacted with the inlet pipe 1 and the outlet pipe 7 and the water containing shell 5 form a water containing cavity together, and the water containing shell 5 is connected with a water source.
The porous pipe 4 and the outlet pipe 7 are connected to form an atomization channel, and the inlet pipe 1 is used for introducing high-speed high-pressure gas;
the water drop type throttling unit 3 comprises a hemisphere assembly 3-1 and a cone assembly 3-2 connected with the hemisphere assembly 3-1, the joint of the hemisphere assembly 3-1 and the cone assembly 3-2 is smooth and tangent to transition, an annular mounting seat 3-3 is further sleeved on the periphery of the hemisphere assembly 3-1, the annular mounting seat 3-3 is connected with the outer wall of the hemisphere assembly 3-1 through two mounting rods, and the annular mounting seat 3-3 is located between the first step surface and one end of the porous pipe 4.
As shown in FIG. 9, in the same condition (air flow rate 50m/s), the water absorption is best when the ratio of the cross-sectional area of the hemispherical assembly 3-1 to the cross-sectional area of the inner cavity of the inlet pipe 1 is 0.429 as can be seen from FIG. 9, because the water absorption is affected by the water drop type throttling unit having different ratios of the cross-sectional area of the hemispherical assembly 3-1 to the cross-sectional area of the inner cavity of the inlet pipe 1.
The holes on the pipe wall of the porous pipe 4 are uniformly distributed.
The water containing shell 5 comprises a tubular shell 5-1 and a water inlet pipe 5-2, a fifth groove 5-3 is formed along the circumferential direction of the inner wall of the tubular shell 5-1, the fifth groove 5-3 and a pipe section on the porous pipe 4 which is not contacted with the inlet pipe 1 and the outlet pipe 7 form a water containing cavity together, one end of the water inlet pipe 5-2 is connected with the side wall of the tubular shell 5-1 and is communicated with the water containing cavity, and the other end of the water inlet pipe 5-2 is connected with a water source.
A first groove 8 is formed in the circumferential direction of the outer wall of the inlet pipe 1, a second groove 9 is formed in the circumferential direction of the outer wall of the outlet pipe 7, and a third groove 10 and a fourth groove 11 are formed in the circumferential direction of the inner wall of the tubular shell 5-1; the cross sections of the first groove 8, the second groove 9, the third groove 10 and the fourth groove 11 are semicircular, the positions of the first groove 8 and the third groove 10 are correspondingly matched for use, and a first sealing ring 2 is arranged in a space formed by combining the first groove 8 and the third groove 10; the positions of the second groove 9 and the fourth groove 11 are correspondingly matched, and a second sealing ring 6 is arranged in a space formed by combining the second groove 9 and the fourth groove 11.
The first sealing ring 2 and the second sealing ring 6 are both sealing rubber rings.
The invention relates to an atomization device with a low pneumatic resistance throttling unit, which is characterized in that when high-speed high-pressure gas is introduced from an inlet pipe and passes through a water drop type throttling unit, negative pressure is formed in a middle cavity, so that liquid is automatically sucked into the middle cavity through a porous pipe, is further smashed into small liquid drops by the high-speed gas, and is discharged from an outlet together under the wrapping of the gas. The water drop structure can enable gas to flow along the periphery and tightly cling to the porous pipe, so that larger negative pressure can be further generated, the water absorption is stronger, and the energy consumption is reduced.
As can be seen from fig. 7- (a), in the atomizer in which the throttling unit is of a hole type, in the perforated tube, the negative pressure near the central axis is greater than the negative pressure near the perforated tube wall, which results in difficulty in flowing the liquid sucked from the perforated tube to the vicinity of the central axis; it can be seen from fig. 8- (a) that the air velocity at the central axis of the atomizer with the orifice type throttling unit is the largest, and the velocity near the wall surface of the outlet pipe is the smallest, so the liquid crushing effect of the atomizer with the orifice type throttling unit is not good, while it can be seen from fig. 7- (b) and 7- (c) that the negative pressure of the atomizer with the ball type and drop type throttling unit is also in the pipe wall, but it can be seen from fig. 8- (b) and 8- (c) that the velocity of the atomizer with the ball type and drop type throttling unit is the largest near the pipe wall, so the sucked liquid can be crushed well without reaching the pipe axis, so the crushing performance of the ball type and drop type throttling unit is better than that of the atomizer with the orifice type throttling unit.
As can be seen from fig. 7- (b) and 7- (c), the water droplet type throttling unit atomizer has a significantly longer negative pressure region in the vicinity of the porous medium than the spherical throttling unit atomizer, and therefore has better water absorption than the spherical throttling unit atomizer.
Aiming at the problems of the existing structure and the uncertainty of related physical property parameters, the atomizing device designed by the invention changes a commonly used ball-shaped throttling unit of the existing atomizer, designs a raindrop-shaped throttling unit structure with low wind resistance, utilizes Fluent software to carry out numerical simulation on the internal flow of the atomizing device with the hole-shaped throttling unit, the ball-shaped throttling unit and the raindrop-shaped throttling unit respectively, and selects the optimal throttling unit scheme after determining the corresponding optimal benefit specification, so that the atomizing effect of the double-fluid atomizer is optimal, and the atomizing device with small atomizing particle diameter and good water absorption is designed.
In conclusion, the atomizer of the drop-shaped throttling unit not only has better effect on breaking liquid drops, but also has better effect on water absorption.
Claims (7)
1. A low aerodynamic resistance throttling unit atomization device is characterized by comprising an atomization component and a water containing shell (5) sleeved outside the atomization component, wherein a water containing cavity is formed between the water containing shell (5) and the atomization component; the atomizing assembly comprises an inlet pipe (1), a water drop type throttling unit (3), a perforated pipe (4) and an outlet pipe (7) which are sequentially arranged in the flowing direction of high-pressure gas after entering, wherein a first step surface (1-1) is arranged at the first end of the inlet pipe (1) along the inner wall in a circle, and the second end of the inlet pipe (1) is connected with a high-pressure gas source; a second step surface (7-1) is arranged at the first end of the outlet pipe (7) along the inner wall in a circle, and the second end of the outlet pipe (7) is a spray outlet; the first end of the inlet pipe (1) is opposite to the first end of the outlet pipe (7), and the water drop type throttling unit (3) and the perforated pipe (4) are positioned between the first step surface (1-1) and the second step surface (7-1); one end of the water containing shell (5) is sleeved on the outer wall of the inlet pipe (1), and the other end of the water containing shell (5) is sleeved on the outer wall of the outlet pipe (7); the water containing shell (5) is in interference fit with the inlet pipe (1) and the outlet pipe (7) respectively, and the end parts of the two ends of the porous pipe (4) are in interference fit with the inlet pipe (1) and the outlet pipe (7) respectively; the pipe section of the porous pipe (4) which is not contacted with the inlet pipe (1) and the outlet pipe (7) and the water containing shell (5) form a water containing cavity together, and the water containing shell (5) is connected with a water source.
2. The low-aerodynamic-resistance throttling unit atomizing device as claimed in claim 1, wherein the water-drop throttling unit (3) comprises a hemisphere assembly (3-1) and a cone assembly (3-2) connected with the hemisphere assembly (3-1), the joint of the hemisphere assembly (3-1) and the cone assembly (3-2) is smooth and tangent, an annular mounting seat (3-3) is further sleeved on the periphery of the hemisphere assembly (3-1), the annular mounting seat (3-3) is connected with the outer wall of the hemisphere assembly (3-1) through two mounting rods, and the annular mounting seat (3-3) is located between the first step surface and one end of the perforated pipe (4).
3. The atomizing device with low aerodynamic resistance of the throttling unit according to claim 2, wherein the ratio of the sectional area of the hemispherical assembly (3-1) to the diameter of the cross section of the inner cavity of the inlet pipe (1) is 0.429.
4. The atomizing device with low aerodynamic resistance and throttle unit according to claim 1, characterized in that the holes on the wall of said perforated tube (4) are uniformly distributed.
5. The low aerodynamic resistance throttling unit atomizing device of claim 1, wherein the water containing housing (5) comprises a tubular housing (5-1) and a water inlet pipe (5-2), a fifth groove (5-3) is formed along the circumferential direction of the inner wall of the tubular housing (5-1), the fifth groove (5-3) and a pipe section of the perforated pipe (4) which is not in contact with the inlet pipe (1) and the outlet pipe (7) form a water containing cavity together, one end of the water inlet pipe (5-2) is connected with the side wall of the tubular housing (5-1) and is communicated with the water containing cavity, and the other end of the water inlet pipe (5-2) is connected with a water source.
6. A low aerodynamic resistance throttling unit atomizing device according to claim 5, characterized in that, there are first grooves (8) along the outer wall circumference direction of said inlet pipe (1), second grooves (9) along the outer wall circumference direction of said outlet pipe (7), third grooves (10) and fourth grooves (11) along the inner wall circumference direction of tubular housing (5-1); the cross sections of the first groove (8), the second groove (9), the third groove (10) and the fourth groove (11) are semicircular, the first groove (8) and the third groove (10) are correspondingly matched in position, and a first sealing ring (2) is arranged in a space formed by combining the first groove (8) and the third groove (10); the second groove (9) and the fourth groove (11) are correspondingly matched in position, and a second sealing ring (6) is installed in a space formed by combining the second groove (9) and the fourth groove (11).
7. The low aerodynamic resistance throttling unit atomizing device of claim 6, characterized in that, the first sealing ring (2) and the second sealing ring (6) are both sealing rubber rings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910822897.9A CN110665669B (en) | 2019-09-02 | 2019-09-02 | Low-aerodynamic-resistance throttling unit atomization device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910822897.9A CN110665669B (en) | 2019-09-02 | 2019-09-02 | Low-aerodynamic-resistance throttling unit atomization device |
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| CN110665669A true CN110665669A (en) | 2020-01-10 |
| CN110665669B CN110665669B (en) | 2021-04-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8708949D0 (en) * | 1986-04-30 | 1987-05-20 | Pringle J M | Mixing fluids |
| US20020070294A1 (en) * | 2000-12-12 | 2002-06-13 | Steven Bertrand | Shower device |
| US8177146B2 (en) * | 2010-05-04 | 2012-05-15 | Sunrise Shower Products Co. Ltd. | Shower head having a larger flushing angle |
| CN105234018A (en) * | 2015-11-25 | 2016-01-13 | 中国矿业大学 | Foam and sprayed mist integrated sprayer |
| CN109692764A (en) * | 2017-10-20 | 2019-04-30 | 美的集团股份有限公司 | Atomizer and cooling device with it |
-
2019
- 2019-09-02 CN CN201910822897.9A patent/CN110665669B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8708949D0 (en) * | 1986-04-30 | 1987-05-20 | Pringle J M | Mixing fluids |
| US20020070294A1 (en) * | 2000-12-12 | 2002-06-13 | Steven Bertrand | Shower device |
| US8177146B2 (en) * | 2010-05-04 | 2012-05-15 | Sunrise Shower Products Co. Ltd. | Shower head having a larger flushing angle |
| CN105234018A (en) * | 2015-11-25 | 2016-01-13 | 中国矿业大学 | Foam and sprayed mist integrated sprayer |
| CN109692764A (en) * | 2017-10-20 | 2019-04-30 | 美的集团股份有限公司 | Atomizer and cooling device with it |
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