KR102311655B1 - Portable electric spray - Google Patents

Abstract

The present invention provides a portable electric spray comprising: a storage tank for storing a liquid and having a circular cross-section; a communication hole formed in the center of the storage tank; and a pump assembly coupled to communicate with the communication hole. The pump assembly comprises: a driving motor provided in the pump assembly to generate rotational force; a driven gear receiving the rotational force from a driving gear of the driving motor; a crankshaft disposed on a rotational shaft of the driven gear; a pair of eccentric parts separately disposed on the crankshaft and positioned to face each other on both sides with the driven gear therebetween; and a valve assembly alternately generating pumping pressure by respective pistons of a pair of connecting rods connected to each of the eccentric parts to convert a rotational motion into a reciprocating motion. Accordingly, it is possible to increase the amount of liquid discharged.

Description

Portable electric spray {PORTABLE ELECTRIC SPRAY}

The present invention embodies the portable electric spray of the applicant's application number 10-2020-0131662, which was previously applied, and in more detail, it implements various functions and at the same time reduces the vibration transmitted to the user when carrying it. is about

Recently, due to environmental pollution, which is getting serious day by day, we are exposed to various sources of pollution, and as the number of outside activities is gradually increasing, prevention and measures for personal hygiene are not taken properly. There are many concerns.

Accordingly, it is the largest medium that can directly and indirectly transmit various pathogenic and infectious microorganisms and foreign substances between people and people, people and things, things and things, and their body parts for personal hygiene from various contaminants. As a (Vector), microorganisms (Microbe, Bacteria, Fungi, Rickettsia, Protozoas, etc.) must be sterilized.

To this end, when it is necessary to spray liquid (water or a mixture of water and drug) in a place where there is a risk of contamination or a place where there is a risk of contamination, the weight and volume are minimized to be applicable to each place, and A portable electric sprayer with power supply is required.

A conventional portable electric sprayer is a means for pumping a liquid, and a motor must be mounted, and the liquid is sprayed at a predetermined pressure by using the rotational force of the motor.

However, when the liquid is sprayed, there is a problem that not only the discharge amount is lowered as discontinuity occurs due to rotation, but also vibration is generated in the portable electric spray, which causes a malfunction, and increases the feeling of fatigue transmitted to the user.

Accordingly, the present invention has been devised to solve the above problems, and it is an object of the present invention to provide a portable electric spray that is convenient to carry, increases the discharge amount of liquid when carrying, and minimizes vibration transmitted to a user.

A portable electric spray according to an embodiment of the present invention is a storage tank containing a liquid and having a circular cross-section, a communication port formed in the center of the circle of the storage tank, and a pump assembly coupled to directly communicate with the upper side of the communication port. The pump assembly includes a driving motor provided in the pump assembly to generate a rotational force, and a spur gear to rotate integrally with the driving motor, the pitch circle of which is located at the center of the communication hole from the upper side of the storage tank. A driving gear disposed at an overlapping position, a rotational force is transmitted from a driving gear of the driving motor, and is located on an extension line dividing the storage tank concentric with the communication port into two, the rotation axis of which is horizontally disposed on the storage tank A driven gear, a crankshaft disposed on the rotation shaft of the driven gear, a pair of eccentric portions disposed on the crankshaft, respectively, positioned to face each other on both sides with the driven gear therebetween, and each of the eccentric portions It is connected to convert a rotational motion into a reciprocating motion, and includes a valve assembly in which pumping pressure is alternately generated by each piston of a pair of connecting rods disposed symmetrically on both sides around the communication port, The eccentric parts may be formed to extend to the crankshaft, and each eccentric parts may be shifted to opposite sides with respect to the rotation shaft of the crankshaft, and may be disposed to face both sides with the driven gear interposed therebetween.

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The valve assembly may include a pair of cylinders in which a piston of the piston rod reciprocates.

It may include a casing coupled to the upper portion of the storage tank and formed to surround the pump assembly, and a battery accommodating part formed in the casing and mounted on the battery accommodating part.

and a hose connector coupled through the casing, one end of the hose connector communicating with the pump assembly, and a nozzle assembly communicating with the other end of the hose connector.

A control panel is formed on the outer surface of the casing, and by controlling a PCB electrically connected to the pump assembly inside the casing through the control panel, the power on/off of the pump assembly and the rotation speed of the driving motor are controlled. can do.

Portable electric spray according to an embodiment of the present invention can increase the discharge amount of the liquid by driving two pistons.

In addition, the moving directions of the two pistons are driven to be opposite to each other, but are arranged to proceed from the center of the storage tank to the opposite side to cancel the vibration due to the reciprocating motion of the pistons, so that the vibration transmitted to the user can be minimized.

1 is a perspective view showing a portable electric spray according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of FIG. 1 .
3 is a perspective view of a pump assembly applied to a portable electric sprayer according to an embodiment of the present invention.
4 is an exploded perspective view of FIG. 3 .

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. A spatially relative term should be understood as a term including different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a perspective view showing a portable electric spray according to an embodiment of the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a perspective view of a pump assembly applied to a portable electric spray according to an embodiment of the present invention and FIG. 4 is an exploded perspective view of FIG. 3 .

1 to 4 , the portable electric spray according to an embodiment of the present invention is a storage tank 100 , a communication port 120 , a pump assembly 200 , a driving motor 210 , and a driven gear 230 . , a crankshaft 231 , first and second eccentric portions 231a and a valve assembly 200a may be included.

The storage tank 100 has an internal space to accommodate a liquid (eg, water or a mixture of water and a chemical), and may be formed of a material having excellent strength and good corrosion resistance, such as plastic. In this embodiment, the shape of the storage tank 100 is shown to be formed in a disk shape having a predetermined thickness, but if it has an internal space that can accommodate a liquid, it can be formed in any shape other than the disk shape. Of course.

A liquid injection hole 110 may be formed on one outer circumferential surface of the storage tank 100 . Water or a chemical liquid, which is a liquid material, may be injected through the liquid injection port 110 .

As described above, the liquid may be immediately injected through the liquid injection port 110 of the storage tank 100, but when the storage tank 100 is detachably coupled from the casings 301 and 302 to be described later, the user may use the storage tank ( 100) is separated from the casings 301 and 302 so that water or chemical can be injected.

The communication port 120 may function as a flow passage through which the liquid accommodated in the internal space of the storage tank 100 may be supplied to the pump assembly 200 to be described later. The formation position of the communication port 120 is preferably arranged in the center of the circle when the shape of the storage tank 100 is a disk shape. When the shape of the storage tank 100 is a polygonal shape other than the disk shape, if a virtual line connecting each of the opposite vertices is drawn and the intersection point where each virtual line meets is defined, the communication port 120 is located at the intersection point. can

The pump assembly 200 includes a pump housing 201 provided with an internal space, a driving motor 210 generating a rotational force inside the pump housing 201 , and a driven gear receiving rotational force of the driving motor 210 . 230, a crankshaft 231 disposed on the rotation shaft of the driven gear 230, a pair of doedoe disposed on the crankshaft 231, positioned to face each other on both sides with the driven gear 230 interposed therebetween A valve assembly 200a in which pumping pressure is alternately generated by a pair of pistons 232a connected to the eccentric part 231a and the eccentric part 231a of .

The pump housing 201 may be made of a metal or non-metal material, and in particular, it is preferably made of a light ceramic material with good wear resistance and lubricity.

The pump assembly 200 may include a driving motor 210 that is rotated in one direction according to the application of power.

Here, the driving gear 220 integrally rotated with the driving motor 210 is made of a spur gear, and may be integrally rotated according to the rotation of the driving motor 210 .

The gear teeth of the driving gear 220 may be disposed at a position overlapping the center of the communication hole 120 on the storage tank 100 to mesh with the driven gear 230 . In other words, the pitch circle, which is the trajectory in which the gear teeth of the driving gear 220 and the driven gear 230 are rotated, is rotated to be formed on the upper side of the communication hole 120 , so that the center of gravity of the storage tank 100 is balanced. can mean

The crankshaft 231 is formed to extend along the rotational axis of the driven gear 230, and a pair of eccentric portions 231a on the crankshaft 231 may be formed to be shifted to opposite sides with respect to the crankshaft 231. have.

In addition, each of the eccentric portions 231a may be positioned to face each other on both sides with the driven gear 230 interposed therebetween. That is, the eccentric portion 231a is positioned to face both sides with a point at which the center of gravity of the storage tank 100 is balanced when viewed with respect to the storage tank 100 .

The pair of connecting rods 232 may be respectively connected to the eccentric portion 231a to perform a function of converting the rotational motion of the driven gear 230 into a reciprocating motion. A piston 232a is coupled to each end of the connecting rod 232 , and the piston 232a reciprocates inside the pair of cylinders 241 as described below, thereby generating a pumping pressure.

Here, since the two pistons 232a are driven, the discharge amount can be increased compared to the conventional one piston pump, and the two pistons by the eccentric portion 231a formed to be shifted from the crankshaft 231 to opposite sides. (232a) will alternately reciprocate. At this time, when one of the pistons 232a proceeds in one direction, the other piston 232a proceeds in the opposite direction, so that the directions of each force are opposite to each other and cancel each other, so that noise and vibration can be reduced.

Each of the pistons 232a uses the pressure formed inside the cylinder 241 in the process of reciprocating the inner space of each of the cylinders 241 formed in the valve assembly 200a. allow it to be discharged.

The valve assembly 200a includes a suction port (not shown) communicating with the communication port 120 , and the liquid flowing in from the suction port by the pumping pressure formed from the cylinder 241 can communicate with the hose connector 340 . have.

In other words, the valve assembly 200a may include an inlet (not shown) through which the liquid to be sprayed is discharged and a discharge portion 203 .

The pump assembly 200 may further include a pressure regulating member 202 for maintaining a constant pressure of the liquid when the injection of the liquid is stopped.

Meanwhile, the casings 301 and 302 coupled to the upper portion of the storage tank 100 and formed to surround the pump assembly 200 may be included.

The casings 301 and 302 may be integrally formed, but in this embodiment, a case in which the front casing 301 and the rear casing 302 are separated and coupled to facilitate disassembly and assembly for maintenance will be described as an example.

A battery accommodating part 320 may be formed in the rear casing 302 . A battery 330 for supplying power may be mounted in the battery receiving unit 320 . When it is difficult to supply power from the outside, the battery 330 is used to supply power, so that it can be carried and used without restriction of place.

In addition, a hose connector 340 coupled through the casings 301 and 302 may be included.

One end of the hose connector 340 may communicate with the pump assembly 200 , and the other end of the hose connector 340 may communicate with a nozzle assembly 360 to be described later.

The nozzle assembly 360 may be mounted on the side surfaces of the casings 301 and 302 through the nozzle assembly support 350 .

One end of the nozzle assembly 360 communicates with the discharge unit 203 of the pump assembly 200 , and the liquid discharged from the discharge unit 203 is discharged to the nozzle assembly 360 through the hose connector 340 .

The nozzle assembly 360 may include a user gripping portion 361 and an actuation lever 362 for controlling spraying.

In addition, the control panel 370 may be formed on the outer surface of the front casing 301 . The user controls the PCB 310 electrically connected to the pump assembly 200 inside the casings 301 and 302 through the control panel 370 to turn on/off the power of the pump assembly 200 and drive the motor 210 . can control the rotation speed. By controlling the rotation speed of the driving motor 210 as described above, the flow rate of the liquid sprayed from the nozzle assembly 360 is adjusted and the discharge pressure is controlled at the same time. In addition, when the lighting device is installed on the control panel 370, it is of course also possible to display the operating state.

In the case of using a portable electric sprayer according to an embodiment of the present invention, when the power switch of the control panel 370 is turned on to drive the driving motor 210, the driving gear ( When 220 rotates, the driven gear 230 meshed therewith rotates.

The crankshaft 231 is rotated by the rotation of the driven gear 230, and accordingly, the pair of connecting rods 232 are rotated while the pair of eccentric portions 231a are rotated.

At this time, each piston 232a formed at the end of the connecting rod 232 makes a reciprocating motion, and a pressure change is formed in each cylinder 241 due to the reciprocating motion of the piston 232a, thereby forming the storage tank 100. of the liquid is sucked in and it acts as a pump.

Here, when any one of the pistons 232a moves from top dead center to bottom dead center, the pressure in the cylinder 241 is lowered, and accordingly, the inlet valve (not shown) is opened and the liquid introduced through the storage tank 100 is transferred to the cylinder ( 241) is introduced into the

Conversely, when any one of the pistons 232a moves from the bottom dead center to the top dead center, the pressure of the liquid flowing into the cylinder 241 is increased to open the discharge valve (not shown) and the discharge valve 203 is discharged from the discharge unit 203 . The liquid is passed through a discharge pipe (not shown). At this time, when the operation lever 361 of the nozzle assembly 360 is pulled, it is sprayed with a predetermined pressure (eg, 10 kg/cm 2 ) through the nozzle assembly 360 .

When the actuating lever 361 of the nozzle assembly 360 is released, the spraying of the liquid is stopped, but the pumping action is continued. Therefore, the pressure of the liquid must be kept constant, and for this purpose, it can be controlled by the pressure adjusting member 202 .

That is, when the liquid flowing through the discharge valve has a predetermined pressure or higher, the liquid flows into the pressure adjusting member 202 through a passage (not shown) communicating with the discharge pipe. The liquid introduced into the pressure regulating member 202 is again discharged to the inlet pipe through the passage communicating with the inlet pipe. As this action is repeated, it keeps the pressure of the liquid constant.

Therefore, the portable electric spray according to an embodiment of the present invention can increase the discharge flow rate of the liquid by driving two pistons.

In addition, the moving directions of the two pistons are driven to be opposite to each other, but are arranged to proceed from the center of the storage tank to the opposite side to cancel the vibration due to the reciprocating motion of the pistons, so that the vibration transmitted to the user can be minimized.

As described above, the portable electric spray according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings described above, and within the scope of the claims, it is common in the technical field to which the present invention pertains. Various implementations are possible by those with the knowledge of

100: storage tank
110: liquid inlet
120: Yeontong-gu
200: pump assembly
200a: valve assembly
201: pump housing
202: pressure regulating member
203: discharge unit
210: drive motor
220: drive gear
230: driven gear
231: crankshaft
231a: eccentric
232a: piston
241: cylinder
232: connecting rod
301, 302: casing
310: PCB
320: battery compartment
330: battery
360: nozzle assembly

Claims (7)

a storage tank containing a liquid and having a circular cross-section;
a communication hole formed in the center of the circle of the storage tank; and
It includes a pump assembly coupled to directly communicate with the upper side of the communication port,
the pump assembly,
a driving motor provided in the pump assembly to generate a rotational force;
a driving gear made of a spur gear to rotate integrally with the driving motor, the pitch circle of which is disposed at a position overlapping the center of the communication hole on the upper side of the storage tank;
a driven gear receiving rotational force from the driving gear of the driving motor and positioned on an extension line dividing the storage tank forming a concentric circle with the communication hole, the rotational shaft of which is horizontally disposed on the storage tank;
a crankshaft disposed on the rotational shaft of the driven gear;
a pair of eccentric portions respectively disposed on the crankshaft and positioned to face each other on both sides with the driven gear therebetween; and
A valve assembly in which pumping pressure is alternately generated by each piston of a pair of connecting rods connected to each of the eccentrics to convert a rotational motion into a reciprocating motion, and to be symmetrically disposed on both sides around the communication port. including,
Each of the eccentric parts is formed extending from the crankshaft, and each eccentric part is formed to be shifted to opposite sides with respect to the rotation shaft of the crankshaft, and disposed to face both sides with the driven gear therebetween. delete delete According to claim 1,
wherein the valve assembly includes a pair of cylinders in which a piston of the connecting rod reciprocates. 5. The method of claim 4,
a casing coupled to an upper portion of the storage tank and formed to surround the pump assembly; and
A battery receiving portion is formed in the casing, and comprising a battery mounted on the battery receiving portion, portable electric spray. 6. The method of claim 5,
It includes a hose connector coupled through the casing,
One end of the hose connector communicates with the pump assembly, and a nozzle assembly communicating with the other end of the hose connector, portable electric spray. 7. The method of claim 6,
A control panel is formed on the outer surface of the casing, and by controlling a PCB electrically connected to the pump assembly inside the casing through the control panel, the power on/off of the pump assembly and the rotation speed of the driving motor are controlled. A portable electric sprayer.

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