KR20230074356A - Portable ulv spraying device - Google Patents

Abstract

The present invention relates to a portable medicine spraying device, which, in particular, sucks air into the inner space of a main air chamber (20) by a fan motor (30) to discharge the air to an ultrafine particle generation unit (42) through an air passage (43) of a two-fluid nozzle (40), and at the same time injects the air into the upper space of a medicine tank (10) through an air injection pipe (50) to pressurize the medicine in the medicine tank (10) and discharge the medicine to the ultrafine particle generation unit (42) through a medicine supply tube (80) and an inner medicine spray nozzle (45) so that the medicine collides with the air discharged to the ultrafine particle generation unit (42) and is sprayed through a discharge port (44) in a state of being crushed into ultrafine particles. Disinfection effects can increase.

Description

Portable ultra-fine particle liquid spray device {PORTABLE ULV SPRAYING DEVICE}

The present invention relates to a portable atomizer, and more particularly, to a device for spraying a chemical solution stored in a drug storage container into ultra-low volume particles.

For quarantine or disinfection, a portable chemical spraying device of a type that atomizes a chemical solution stored in a chemical storage container and sprays it in a space to be disinfected or disinfected while being carried and moved is known. In the case of quarantine or sterilization by chemical spraying of the chemical spraying device, in order to increase the disinfection effect, it is necessary to uniformly spray the chemical solution sprayed from the chemical spraying device over a wider range. To this end, the chemical spraying device sprays It is necessary to convert the particles into ultra-low volume within several tens of μm.

In this way, if the chemical solution in the state of ultra-fine particles is sprayed on a target, it can be uniformly sprayed over a wide area with a small amount, the chemical solution is attached only to the target to be sprayed to increase the efficiency of spraying the chemical solution, and the chemical solution is applied to unnecessary parts. The problem of spraying and contamination can be prevented.

On the other hand, conventional chemical liquid spraying devices are disclosed in the following patent documents.

KR 10-2292847B KR 10-1844488B The chemical liquid spraying device of Patent Document 1 uses a pump 500 to pressurize the chemical liquid in the chemical tank 300 to the spray nozzle 600. In the case of using the pump in this way, the overall weight of the spraying device is heavy, making it inconvenient to handle, and there is a disadvantage in that the volume of the device is unnecessarily increased because a space is required to install the pump inside the spraying device case. In particular, since the pump is corroded by the chemical solution and malfunctions occur, it has inconvenience in maintenance such as repairing or replacing the pump. In addition, the chemical spraying device of Patent Document 2 uses a pump 5 to pressurize the chemical solution in the liquid case (referred to as 'medicine storage container' 5) to the spray nozzle 600, and the spray nozzle through which the chemical solution is sprayed. (2) It has an air flow guide device 4 composed of a plurality of guide blades 41 and a spiral channel 21 around it. Accordingly, the chemical liquid spraying device of Patent Document 2 uses the pump 5 as in Patent Document 1, so it has the above-described disadvantages, and in particular, the air flow guide device 4 provided around the spray nozzle 2 is provided. Since the flow of the mixed gas of the sprayed chemical liquid and air is obstructed by the air flow guide device 4 and the flow rate is lowered, it is difficult to make the chemical liquid ultra-fine, and thus the spray effect of the chemical liquid is low.

Accordingly, the present invention has been devised to solve the problems of the prior art, and an object of the present invention is to provide a portable ultra-fine particle liquid chemical spray device capable of ultra-fine atomizing and spraying liquid liquid without using a separate power unit such as a pump.

In addition, another object of the present invention is to provide a portable ultra-fine particle liquid chemical spray device capable of finely adjusting the amount of ultra-fine particle spray of the liquid chemical.

Portable ultra-fine particle liquid chemical spraying device of the present invention for achieving the above object,

a chemical solution tank for storing a chemical solution;

a main air chamber having an inner space, having an air inlet on a rear side wall, and having an opening on a front side wall;

a fan motor that sucks external air into the inner space through the air intake of the main air chamber and forcibly blows the air toward the opening;

It has an inner space whose inner diameter is gradually reduced from the inlet to the outlet, is coupled to the opening of the main air chamber to communicate with the inner space of the main air chamber, and air sucked into the inner space by the fan motor is passed through the outlet. an outside air injection nozzle, which is coaxially disposed along a central axis direction in an inner space at a front end of the outside air injection nozzle, and has a chemical liquid passage in the central axis direction, and an outer circumferential surface and the outside air injection nozzle A two-fluid nozzle consisting of an inner chemical liquid injection nozzle forming an air passage whose cross-sectional area gradually decreases toward the discharge port between the inner wall of the front end of the nozzle;

An air injection pipe for introducing a part of the air sucked into the inner space of the main air chamber by the fan motor into the upper space of the chemical solution tank to apply pressure to the chemical solution in the chemical solution tank; When the internal pressure of the main air chamber is above a certain pressure, the air injection pipe is opened to introduce air from the main air chamber into the upper space of the chemical liquid tank, and the air injected into the upper space of the chemical liquid tank is supplied to the main air chamber. An air injection device consisting of a check valve to block the flow back into the inner space of the chamber;

a relief valve that controls the pressure of the inner space of the chemical tank so that the pressure does not exceed a certain level; and

and a chemical solution supply pipe having one end disposed to be immersed in the chemical solution of the chemical solution tank and the other end connected to the inlet of the inner chemical solution injection nozzle to guide the chemical solution in the chemical solution tank to be supplied to the inner chemical solution injection nozzle. .

The present invention is characterized by further comprising a flow control valve for finely adjusting the flow rate of the chemical solution supplied to the inner chemical injection nozzle of the two-fluid nozzle through the chemical solution supply pipe.

The flow control valve is a needle valve that adjusts the flow rate of the chemical solution by changing the cross-sectional area of the through hole provided in the valve seat by moving the spool screwed to the valve body forward/backward as the handle is rotated clockwise or counterclockwise. consists of

In the two-fluid nozzle, the front end of the outer air injection nozzle extends further outward in the direction of the central axis by a predetermined length than the front end of the inner chemical injection nozzle, so that the chemical solution discharged from the inner chemical injection nozzle is discharged from the air container of the outer air injection nozzle. It is characterized by forming an ultra-fine particle generating unit for generating ultra-fine particles by bumping into the increased air flow through the furnace.

It is characterized in that the air injection pipe is provided with at least one orifice for reducing the passing flow rate.

The check valve opens the flow path when the internal pressure of the main air chamber is 3 KPa or more, and the relief valve opens the flow channel when the internal pressure of the chemical liquid tank is 3 KPa or more to maintain the internal pressure of the chemical liquid tank at 3 KPa. It is characterized by being.

A nozzle hole having a diameter of 0.7 mm to 1.8 mm is provided at the front end of the inner chemical liquid injection nozzle according to the specifications of a fan motor, the ultra-fine particle generator is formed with a length of 6 mm to 10 mm, and the internal pressure in the ultra-fine particle generator is It is characterized in that the pressure is relatively lower than the internal pressure of the liquid chemical tank.

The orifice of the air injection pipe is characterized in that it has a diameter of 0.5mm to 2.0mm.

According to the portable ultra-fine particle chemical solution spraying device of the present invention, the chemical solution can be ultra-finely atomized only by adjusting the air pressure and the chemical discharge flow rate without using a separate power device such as a separate pump, and the chemical solution is sprayed by applying a two-fluid nozzle. It is possible to increase the effect of quarantine or disinfection by spraying with ultra-fine particles.

1 is an assembled cross-sectional view showing the overall configuration of an ultrafine particle liquid chemical spraying device according to the present invention.
Figure 2 is an enlarged detailed view of the two-fluid nozzle of Figure 1.
3 is a detailed view of an air injection pipe for supplying air in a chemical liquid tank and a check valve installed in the air injection pipe in the present invention.
Figure 4 is a partially enlarged detailed view of the relief valve for maintaining a constant pressure in the chemical liquid tank in the present invention.
5 is a cross-sectional view of a needle valve as an example of a flow control valve installed in a chemical solution supply pipe.
Figure 6 (a) is a photograph showing a state in which the chemical solution is sprayed in a state in which the two-fluid nozzle of the ultrafine particle chemical spray device of the present invention is placed in a horizontal state, and (b) is a photograph showing the chemical spray state of the chemical spray device according to the prior art is a picture showing

Hereinafter, a preferred embodiment of the portable ultra-fine particle chemical liquid spraying device of the present invention will be described in detail according to the accompanying drawings.

Figure 1 shows an assembled cross-sectional view showing the overall configuration of the ultra-fine particle chemical liquid spraying device of the present invention. As shown in FIG. 1, the ultrafine particle liquid chemical spraying device of the present invention includes a chemical liquid tank 10, a main air chamber 20, a fan motor 30, two fluid nozzles 40, an air injection pipe 50, a check It includes a valve 61, a relief valve 70, and a chemical solution supply pipe 80.

The chemical solution tank 10 injects and stores the chemical solution to be sprayed through the chemical solution inlet 11, and the chemical solution inlet 11 is opened and closed with a stopper 12. Reference numeral 15 denotes a filter.

The main air chamber 20 has an inner space, has an air inlet 21 on a rear side wall, and has an opening 22 on a front side wall. A fan motor 30 is installed in the inner space of the main air chamber 20 , and the two-fluid nozzle 40 is coupled to the opening 22 .

As shown in FIG. 2, the two fluid nozzles 40 include an outside air injection nozzle 41 coupled to the opening 22 of the main air chamber 20 and an internal space of the outside air injection nozzle 41. It consists of an inner chemical liquid injection nozzle 45 disposed coaxially along the direction of the central axis.

The outside air injection nozzle 41 has an inner space whose inner diameter is gradually reduced from the opening 22 toward the discharge port. The inner chemical liquid injection nozzle 45 is coaxially disposed in the inner space of the front end of the outer air injection nozzle 41 along the central axis direction, and has a chemical liquid passage 46 in the central axis direction, and has an outer circumferential surface and the outer An air passage 43 whose cross-sectional area gradually decreases toward the discharge port is formed between the inner wall of the front end of the air injection nozzle 41 .

The outer air injection nozzle 41 has an ultra-fine particle generating unit 42 extending outward in the direction of the central axis by a predetermined length from the front end of the inner chemical liquid injection nozzle 45 at the front end.

The fan motor 30 may use any one of two types of an AC type and a BLDC type driven by AC power. The capacity of the AC type fan motor is generally used within the range of 600W to 2,600W, and the wind pressure is about 9KPa to 30KPa. The air volume varies depending on the size of the fan of the fan motor 30, and the number of revolutions of the motor is within a range of 20,000 to 35,000 RPM. BLDC type fan motors mainly use high-speed types of 40,000 to 100,000 RPM. This is because the capacity of the fan motor cannot be increased. The capacity is about 24V, 200W~ 48V, 600W. Wind pressure of 9KPa to 20KPa is used.

According to the configuration described above, when power is supplied to the fan motor 30 to drive the fan motor 30, the fan motor 30 passes outside air into the main air chamber 20 through the air inlet 21. It is sucked into the inner space and discharged toward the discharge port 44 through the air passage 43 of the two-fluid nozzle 40. At this time, the flow rate of the air sucked into the inner space increases while passing through the air passage 43, and the pressure at the discharge port 44 decreases accordingly. In this way, since the pressure at the discharge port 44 is relatively lower than the pressure in the chemical liquid tank (for example, 3 KPa), an effect of sucking the chemical liquid in the chemical liquid supply pipe toward the discharge port occurs due to the pressure difference.

Meanwhile, as shown in FIGS. 1 and 3 , an air injection device 60 is provided to inject air of a certain pressure or higher sucked into the main air chamber 20 into the upper space of the liquid chemical tank 10 . The air injection device 60 includes an air injection pipe 50 communicating the upper space of the main air chamber 20 and the liquid chemical tank 10 with each other, and a check valve 61 installed in the air injection pipe 50. ) is made up of The air sucked into the inner space of the main air chamber 20 by the fan motor 30 is also discharged toward the discharge port 44 and is injected into the chemical liquid tank 10 through the air injection pipe 50 at the same time as the chemical liquid. The pressure in the upper space of the tank 10 is increased.

A check valve 61 is provided in the air injection pipe 50 . The check valve 61 opens the flow path of the air injection pipe 50 when a certain pressure of the air flowing into the main air chamber 20 is higher than a certain pressure, for example, 3KPa or higher, so that the main air chamber 20 ) is allowed to be injected into the chemical liquid tank 10, and when the spraying device stops operating, the air and chemical liquid injected into the chemical liquid tank 10 into the main air chamber 20 It is blocked so that it does not flow back.

Also, a relief valve 70 is installed in the chemical liquid tank 10 . As shown in FIG. 4, the relief valve 70 opens the flow path when the pressure in the upper space of the chemical liquid tank 10 exceeds a certain pressure, preferably 3KPa, to open the upper space of the chemical liquid tank 10. The air is discharged to the outside to maintain the pressure in the upper space of the chemical liquid tank 10 at a constant pressure. Accordingly, the discharge pressure of the chemical solution is maintained uniformly, so that the spraying force from the nozzle capable of spraying ultra-fine particles is maintained constant.

As shown in detail in FIG. 4, the relief valve 70 is provided with a discharge pipe 76, a relief valve body 71 is coupled to the outer front end of the discharge pipe 76, and the relief valve body 71 An air discharge path 75 is pierced, and a diaphragm 72 elastically supported by a spring 73 is provided inside the relief valve body 71, and the upper space of the chemical tank 10 has a certain pressure. In the case of more than 3KPa or more, for example, the diaphragm 72 receives air pressure and moves against the force of the spring 73 to separate from the valve seat 74 to form an air discharge passage.

One end of the chemical liquid supply pipe 80 is disposed submerged in the chemical liquid tank 10 and the other end passes through the main air chamber 20 and is connected to the inlet of the inner chemical liquid injection nozzle 45 .

With the above configuration, the air introduced into the inner space of the main air chamber 20 through the air inlet 21 by the operation of the fan motor 30 passes through the air passage 43 of the dual fluid nozzle 40. It flows out toward the discharge port 44 and the flow rate increases while passing through the air passage 43, and as a result, the pressure in the ultrafine particle generator 42 is lower than the pressure in the upper space of the chemical liquid tank 10. Accordingly, the chemical solution in the chemical solution tank 10 is pressurized by the air pressure in the upper space and supplied into the inner chemical solution injection nozzle 45 through the chemical solution supply pipe 80, and through the nozzle hole 47 at the tip of the ultrafine particle generator 42 ), and is pulverized into ultra-fine particles by colliding with the air discharged from the ultra-fine particle generator 42 through the air passage 43 of the outside air injection nozzle 41, and discharge port 44 in the state of ultra-fine particles together with the air sprayed through

As shown in FIG. 6, the ultrafine particle chemical spraying device of the present invention shows more improved performance in terms of spraying amount or spraying range of the chemical compared to the prior art.

Meanwhile, a chemical solution flow control valve 90 for adjusting the flow rate of the chemical solution passing through the chemical solution supply pipe 80 is connected to the chemical solution supply pipe 80 . As shown in FIG. 5, the flow control valve 90 advances/reverses the spool 93 screwed to the valve body 92 by rotating the handle 91 clockwise or counterclockwise. It consists of a needle valve that finely adjusts the flow rate of the chemical solution by varying the cross-sectional area of the through hole 95 provided in the seat 94.

By adjusting the amount of the chemical solution supplied to the inner chemical solution injection nozzle 45 with the needle valve, the spray amount of the chemical solution of ultra-fine particles can be finely controlled.

10: chemical solution tank 11: chemical solution inlet
12: stopper 15: filter
20: main air chamber
21: air inlet 22: opening
30: fan motor 40: 2 fluid nozzles
41: external air injection nozzle 42: ultrafine particle generator
43: air passage 44: discharge port
45: inner chemical liquid injection nozzle 46: chemical liquid passage
50: air injection pipe 51: orifice
60: air injection device 61: check valve
70: relief valve 71: relief valve body
72: diaphragm 73: spring
74: valve seat
75: air discharge path 76: discharge pipe
80: chemical solution supply pipe 90: flow control valve
91: handle 92: valve body
93: spool 94: valve seat
95: through hole 96: chemical solution through hole

Claims (6)

As a portable ultra-fine particle chemical spray device,
a chemical solution tank 10 for storing a chemical solution;
a main air chamber 20 having an inner space, having an air inlet 21 on a rear side wall, and having an opening 22 on a front side wall;
a fan motor (30) for forcibly discharging external air into the inner space through the air inlet (21) of the main air chamber (20) and forcibly discharging it toward the opening (22);
It has an inner space whose inner diameter gradually decreases from the opening 22 toward the discharge port 44, and is coupled to the opening 22 of the main air chamber 20 to communicate with the inner space of the main air chamber 20, An outside air injection nozzle 41 for guiding the air sucked into the internal space by the fan motor 30 to be discharged to the outside through the discharge port 44, and an inner space at the front end of the outside air injection nozzle 41 It is arranged coaxially along the central axis direction, has a chemical liquid passage 46 in the central axis direction, and the cross-sectional area between the outer circumferential surface and the inner wall of the front end of the outside air injection nozzle 41 gradually increases toward the discharge port 44. a two-fluid nozzle 40 composed of an inner chemical liquid injection nozzle 45 forming a decreasing air passage 43;
Air that introduces a part of the air sucked into the inner space of the main air chamber 20 by the fan motor 30 into the upper space of the chemical liquid tank 10 to apply pressure to the chemical liquid in the chemical liquid tank 10 When the internal pressure of the injection pipe 50 and the air injection pipe 50 of the main air chamber 20 is higher than a certain pressure, the flow path is opened to supply air in the main air chamber 20 to the chemical liquid tank ( Air injection device 60 composed of a check valve 61 that introduces air into the upper space of the 10) and blocks the air in the upper space of the chemical liquid tank 10 from flowing back into the inner space of the main air chamber 20 );
a relief valve 70 for controlling the pressure in the inner space of the liquid chemical tank 10 not to exceed a certain pressure; and
One end is immersed in the chemical solution of the chemical solution tank 10 and the other end is connected to the inlet of the inner chemical solution injection nozzle 45 to guide the chemical solution in the chemical solution tank 10 to the inner chemical solution injection nozzle 45 A portable ultra-fine particle chemical spraying device comprising a; chemical solution supply pipe 80. According to claim 1,
A flow control valve 90 is further provided to control the flow rate of the chemical solution supplied to the inner chemical injection nozzle 45 of the two-fluid nozzle 40 through the chemical solution supply pipe 80, and the flow control valve 90 As the handle 91 is rotated clockwise or counterclockwise, the spool 93 screwed to the valve body 92 is moved forward/backward to open the through hole 95 provided in the valve seat 94. Portable ultra-fine particle chemical spraying device, characterized in that composed of a needle valve that controls the flow rate of the chemical by varying the cross-sectional area. According to claim 1,
In the two-fluid nozzle 40, the front end of the outside air jet nozzle 41 extends further outward in the central axis direction than the front end of the inner chemical liquid jet nozzle 45 by a predetermined length, so that the inner chemical liquid jet nozzle 45 and an ultra-fine particle generating unit 42 for generating ultra-fine particles by colliding with the increased air flow through the air passage 43 of the external air injection nozzle 41. Portable ultra-fine particle chemical spraying device. According to claim 1,
Portable ultra-fine particle chemical liquid spraying device, characterized in that the air injection pipe (50) is provided with at least one orifice (51) for reducing the passing flow rate. According to claim 1,
The check valve 61 opens the passage when the internal pressure of the main air chamber 20 is 3KPa or more, and the relief valve 70 opens the passage when the internal pressure of the liquid chemical tank 10 is 3KPa or more. , Portable ultra-fine particle chemical solution spraying device that maintains the internal pressure of the chemical solution tank 10 at 3KPa. According to claim 3,
A nozzle hole 47 having a diameter of 0.7 mm to 1.8 mm is provided at the front end of the inner chemical liquid injection nozzle 45, and the ultra-fine particle generator 42 is formed with a length of 8 mm to 10 mm. The portable ultra-fine particle chemical spray device, characterized in that the internal pressure at (42) is relatively lower than the internal pressure of the chemical liquid tank (10).

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