WO2023146240A1

WO2023146240A1 - Noise reduction-type solenoid valve assembly

Info

Publication number: WO2023146240A1
Application number: PCT/KR2023/001061
Authority: WO
Inventors: 원철호
Original assignee: 슬립나이저 주식회사
Priority date: 2022-01-26
Filing date: 2023-01-20
Publication date: 2023-08-03
Also published as: KR102440275B1

Abstract

The present invention provides a noise reduction-type solenoid valve assembly comprising: a housing comprising a noise reduction chamber having an inlet for introducing a fluid into the inside thereof, and an in/out chamber having at least two outlets for discharging fluid that has passed through the noise reduction chamber to the outside; and an upright solenoid valve, coupled in the housing so as to open and close in the vertical direction, for opening and closing the outlets.

Description

Reduced noise solenoid valve assembly

The present invention relates to a noise reduction type solenoid valve assembly, and relates to a noise reduction type solenoid valve assembly in which the solenoid valve is arranged upright so as to be operated in a vertical direction.

In general, a solenoid valve is a device that opens and closes a valve with an electromagnet using electricity, and is used to provide high reliability and efficiency according to the development of computer-controlled automatic hydraulic and pneumatic devices.

In such a solenoid valve, a solenoid coil is usually disposed inside the coil, and a plunger or an armature moves depending on whether current is applied to open or close a pipe through which fluid moves.

However, since the conventional solenoid valve is usually installed in a horizontal direction, a plunger reciprocating in a straight line is worn by friction in the gravitational direction, resulting in loss of valve function.

Moreover, hydraulic pressure or pneumatic pressure supplied to the inside of the solenoid valve is usually supplied by a pump generating pulsating waves, but there is a limit to continuously supplying a constant pressure due to the pulsating waves generated at this time.

The present invention is to solve this problem, and more particularly, an object of the present invention is to provide a noise reduction type solenoid valve assembly installed in the vertical direction through an upright solenoid valve.

In addition, the present invention provides a noise reduction type solenoid valve assembly capable of solving problems caused by noise and pulsation waves while providing a constant pressure of the fluid supplied from the pump in the process of supplying the fluid through the upright solenoid valve. There is a purpose.

The present invention for carrying out the above object is a noise reduction chamber provided with an inlet for introducing fluid into the interior, and an entrance and exit chamber provided with at least two outlets to discharge the fluid passing through the noise reduction chamber to the outside. housing; and an upright solenoid valve coupled to open and close in the housing in a vertical direction to open and close the outlet. It provides a noise reduction type solenoid valve assembly comprising a.

The housing may include a buffer chamber disposed between the noise reduction chamber and the entrance/exit chamber to temporarily store fluid passing through the noise reduction chamber.

The noise reduction chamber may include a plurality of diaphragms for changing a moving direction of the fluid supplied from the inlet to the buffer chamber a plurality of times while moving in the direction of the buffer chamber.

The noise reduction chamber includes at least one shielding wall that divides the inside of the chamber from each other, a first region and a second region divided around the shielding wall, and provided inside the first region and the second region, respectively, so that the first region It may include a plurality of diaphragms for changing a moving direction a plurality of times while the fluid is supplied from a first inlet provided in the first inlet or a second inlet provided in the second region and moves toward the buffer chamber.

The buffer chamber may be arranged so that air moves in a direction opposite to the direction of air flowing inside the noise reduction chamber.

The buffer chamber may be disposed such that one side communicates with the noise reduction chamber and the other side communicates with the entrance/exit chamber.

The entrance chamber includes at least two openings and closing openings opened and closed by operation of the upright solenoid valve, and a nozzle protruding forward in communication with each opening opening, and when the upright solenoid valve is opened inside the entrance chamber, the opening and closing openings All can be arranged to communicate.

According to the noise reduction solenoid valve assembly according to the present invention,

First, as the upright solenoid valve is arranged to operate in the vertical direction on the housing, it is possible to solve problems caused by uneven wear or noise caused by valve operation, thereby increasing the usable life.

Second, since the noise or pulsation included in the compressed air introduced into the noise reduction chamber can be minimized through the breaking structure, it is possible to maintain a low-noise design and continuous air supply pressure,

Third, since air of a set capacity can be temporarily stored inside the noise reduction chamber and the buffer chamber, sufficient space and time to absorb or dissipate noise and pulsation waves can be provided,

Fourth, there is an effect of controlling the air supply and discharge path in various ways through the opening and closing operation of the valve on the entry and exit chamber.

1 is a perspective view showing a bed structure in which a noise reduction type solenoid valve assembly according to an embodiment of the present invention is installed.

2 is an exploded perspective view showing a structure for supplying fluid to each mattress in the noise reducing solenoid valve assembly shown in FIG. 1;

FIG. 3 is a perspective view showing the noise reducing solenoid valve assembly shown in FIG. 1;

4 is an exploded perspective view showing the noise reduction type solenoid valve assembly shown in FIG. 3 in an exploded manner;

FIG. 5 is a cross-sectional view showing an area AA′ of the noise reducing solenoid valve assembly shown in FIG. 3 .

FIG. 6 is a cross-sectional view showing an area BB′ of the noise reducing solenoid valve assembly shown in FIG. 3 .

FIG. 7 is a cross-sectional view showing a region C-C′ of the noise reducing solenoid valve assembly shown in FIG. 3;

8 and 9 are cross-sectional views showing a state in which the valve is opened and closed in the region DD′ of the noise reducing solenoid valve assembly shown in FIG. 3 .

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated and described in the drawings.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms.

These terms are only used for the purpose of distinguishing one component from another.

For example, a second element may be termed a first element, and similarly, a first element may be termed a second element, without departing from the scope of the present invention.

The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be.

On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings, but the same or corresponding components regardless of reference numerals are given the same reference numerals, and overlapping descriptions thereof will be omitted.

1 is a perspective view showing a bed structure in which a noise reduction type solenoid valve assembly according to an embodiment of the present invention is installed, and FIG. 2 shows a structure for supplying fluid to each mattress from the noise reduction type solenoid valve assembly shown in FIG. 1 It is an isolated perspective view of

Referring to Figures 1 and 2, the noise reduction type solenoid valve assembly according to an embodiment of the present invention will be described as being installed in the bed structure 100 as an example. Of course, the noise reduction type solenoid valve assembly 200 can be selectively applied to vehicles, construction equipment, automatic control systems requiring computer control, and the like.

The bed structure 100 shown in FIGS. 1 and 2 includes a first mattress 110, a second mattress 120, a reinforcing part 130, and a housing 140, and a fluid is applied to each mattress. A noise reducing solenoid valve assembly 200 for supplying or discharging is installed.

First, the first mattress 110 and the second mattress 120 will be described as having the same structure as an example. For example, the first mattress 110 and the second mattress 120 may be arranged in a symmetrical structure with respect to the reinforcing part 130 disposed therebetween.

Although not shown in the drawings, the first mattress 110 and the second mattress 120 may have different sizes or heights, or may have different internal structures.

Each mattress (110, 120) may be formed long along the direction in which the user lies down. For example, the first mattress 110 and the second mattress 120 may be made of a single size, and may have approximately width * length of 1000 * 2000 mm. Each mattress is made of synthetic resin including rubber, vinyl, PVC or polyurethane film, and silicone, and can be prepared to be deformable in volume or size. can be restricted from expanding indefinitely.

Although not shown in the drawing, each

mattress

110, 120 may have a cell structure in which one inner chamber is divided into a plurality of areas. When such a cell structure is provided, each

mattress

110, 120 may adjust the filling amount of air so as to have air pressures of different set sizes for each cell area.

A reinforcing part 130 is disposed in a region between the first mattress 110 and the second mattress 120 . The reinforcing part 130 provides a cushion similar to that of each mattress in an area between the first mattress 110 and the second mattress 120 connected, contributing to reducing the sense of difference between cushions between mattresses.

The reinforcing part 130 may be disposed so that surfaces facing each other between the first mattress 110 and the second mattress 120 come into close contact with each other. For example, the side of the reinforcing part 130 may have a shape corresponding to the shape of the side where the first mattress 110 and the second mattress 120 face each other. That is, in contrast to the fact that the first mattress 110 and the second mattress 120 protrude to form a curved side by air pressure or by a user's pressure, both sides of the reinforcing part 130 may be made of a concave curved surface. there is.

If both sides of the reinforcing part 130 are made of concave curved surfaces, the space between the first mattress 110 and the second mattress 120 can be minimized, and the inside of each mattress can be minimized. Since the internal pressure of the reinforcing part 130 may also increase in response to the increase in pressure, there is an advantage in that the mattress and the reinforcing part 130 maintain a similar pressure to each other to reduce a sense of difference between the cushion in the area between them.

A housing 140 is provided outside the first mattress 110 and the second mattress 120 .

The housing 140 has an accommodation space 141 formed therein so as to cover the outer and rear surfaces of the first mattress 110 and the second mattress 120, and the first mattress 110 inside the accommodation space 141. ) and the second mattress 120 may be accompanied by a function of preventing them from being pushed in the horizontal direction while being accommodated.

The housing 140 may be made of a structure in which air is filled inside like a mattress, or may be made of a cushion structure having a predetermined elasticity. Of course, it may be made of a structure made of an inelastic material such as a bed frame. In this embodiment, a case in which the housing 140 is made of a cushion structure having a predetermined elasticity and is applied with a structure in which external deformation due to elastic restoration is less than that of a mattress is applied will be described as an example.

And, the noise reduction type solenoid valve assembly 200 is installed to be accommodated in the accommodation space of the housing 140, and supplies air to provide a set pressure to the first mattress 110 and the second mattress 120. In addition, the noise reduction type solenoid valve assembly 200 may have a function of constantly maintaining a set pressure of air supplied to the inside of the first mattress 110 and the second mattress 120 .

Although not shown in the drawings, the noise reduction type solenoid valve assembly 200 may be separately accommodated outside the housing 140 .

3 is a perspective view showing the noise reduction type solenoid valve assembly shown in FIG. 1, and FIG. 4 is an exploded perspective view showing the noise reduction type solenoid valve assembly shown in FIG. 3 in an exploded view.

A noise reduction solenoid valve assembly 200 according to an embodiment of the present invention includes a cover housing 210 and an upright solenoid valve 300 .

First, the cover housing 210 can remove noise and pulsating waves generated in the process of receiving air supplied from an external pump (see FIG. 2 151 ) and temporarily storing the air therein.

The cover housing 210 includes a noise reduction chamber 220 , a buffer chamber 230 and an entry/exit chamber 240 .

The noise reduction chamber 220 is located above the buffer chamber 230 and is arranged side by side with the upright solenoid valve 300 in the horizontal direction. The open top of the noise reduction chamber 220 may be opened and closed by a separate cover 211 .

And, the noise reduction chamber 220 may be provided with a separate plate 212 inside the cover 211. The plate 212 may provide a function of sealing between the upper portion of the noise reduction chamber 220 and the cover 211 or blocking transmission of noise toward the cover 211 .

A plurality of diaphragms 213 are provided inside the noise reduction chamber 220 to induce a direction change of the air introduced in the side direction at least twice or more times. Of course, the injection port 214 is formed on the side of the noise reduction chamber 220, and a nozzle structure connected thereto may be provided.

The diaphragm 213 has a plate shape bent at least once in the vertical direction, such as an “a” shape, a “b” shape, a “c” shape, and a “d” shape. The diaphragm 213 has an advantage of contributing to supplementing the rigidity of the noise reduction chamber 220 or the cover housing 210 .

Air supplied to the inlet 214 is guided along the shape of the diaphragm 213 and moves in a direction of low pressure. Therefore, the noise reduction chamber 220 induces the movement of air to the side where the diaphragm 213 is not blocked, thereby extending the movement path of the air, and generating noise or pulsating waves of air generated from the pump during the movement of the air. can absorb or dissipate at least some of them. For example, the outer surface of the diaphragm 213 may be finished with a sound-absorbing material (eg, wood, cement, fabric, synthetic resin, etc. compressed under high pressure, or a panel treated with antibacterial and flame retardant treatment after foam molding).

In addition, the noise reduction chamber 220 may be configured to be divided into a plurality of spaces. In FIG. 4, a shielding plate 215 is provided in the middle of the noise reduction chamber 220 to divide both sides into spaces of the same size, and a first area (see FIG. 5, A1 ) and the second area (see FIG. 5, A2) are formed, and the diaphragms 213 inside each area configure the air movement path as an example. Of course, the noise reduction chamber 220 may be configured (not shown) to be divided into one space or three or more spaces.

A buffer chamber 230 is located below the noise reduction chamber 220 . The buffer chamber 230 moves inside the noise reduction chamber 220 in a zigzag direction to supply air in which noise and pulsation are removed, and has a function of temporarily storing compressed air together with the noise reduction chamber 220. to provide. Since there are no elements obstructing the movement or flow of air inside the buffer chamber 230, it is possible to store as much air as possible within the set volume while inducing smooth air movement.

In addition, the buffer chamber 230 may store a large amount of air and provide a buffer function to continuously discharge air at a constant pressure in a situation where air is supplied to a consumer. In this embodiment, the consumer may be the above-described first mattress (see FIG. 2 110) and second mattress (see FIG. 2 120).

The entrance/exit chamber 240 receives air from the buffer chamber 230 and discharges it to a consumer, or conversely provides a function of branching the air introduced therein.

In front of the entrance chamber 240, at least two

openings

241a, 242a, and 243a and

nozzles

241b, 242b, and 243b communicating with the

openings

241a, 242a, and 243a are included.

In the embodiment of the present invention, first openings 241a to third openings 241a to 3rd openings 243a are provided inside the entrance chamber 240, and the first nozzle 241b protrudes forward of the entrance chamber 240 to communicate with them, respectively. ) to third nozzles 243b are provided.

Since the

openings

241a, 242a, and 243a are arranged to communicate with each other inside the entry/exit chamber 240, the air supply direction is determined according to the open and closed openings among the three

openings

241a, 242a, and 243a. .

An upright solenoid valve 300 is disposed above the entry/exit chamber 240 .

The upright solenoid valve 300 is provided with a first valve 310 to a third valve 330 to correspond to the number of openings. Accordingly, the first valve 310 opens and closes the first opening and closing port 241a, the second valve 320 opens and closes the second opening and closing port 242a, and the third valve 330 opens and closes the third opening and closing port 243a. open and close

A sealing member 250 may be provided on a contact surface where the upright solenoid valve 300 is coupled to the upper part of the entry/exit chamber 240 .

And, each of the

valves

310, 320, and 330 includes a basic configuration for the operation of the solenoid valve. In each of the

valves

310, 320, and 330, a coil 312 is disposed so as to wrap around the bobbin 311, a core 313 and a plunger 314 are disposed inside the bobbin 311, and the coil 312 As the power is turned on/off, the shielding member 315 coupled to the end of the plunger 314 opens and closes each opening. A fixing plate 316 for guiding the movement of the plunger 314 may be provided below each of the

valves

310 , 320 , and 330 . These

valves

310, 320, and 330 may be fixed on the cover housing 210 while the case 317 covering the outside is coupled.

FIG. 5 is a cross-sectional view showing an area AA′ of the noise reducing solenoid valve assembly shown in FIG. 3 . ①, ②, ③, and ④ indicated in FIG. 5 indicate directions according to the movement of air.

Referring to FIG. 5 , the noise reduction chamber 220 includes a first area A1 and a second area A2 centered on the shielding plate 215 therein. Air moving inside the first area A1 and the second area A2 may be arranged symmetrically with each other.

The air introduced into the inlet 214a from the first area A1 of the noise reduction chamber 220 moves in the direction ④ and then turns again in the direction ②, and then switches to the

direction

①, ③, ①, and ②. After repeating, it moves to the buffer chamber 230. Of course, the moving direction of the air inside the noise reduction chamber 220 is not limited thereto, and modifications may be implemented through various design changes. In addition, even if the direction is not changed, any structure in which the moving distance of the air increases inside the noise reduction chamber 220 may be included in the embodiment of the present invention.

The air introduced into the inlet 214b from the second area A2 of the noise reduction chamber 220 moves in the direction ④ and then turns again in the direction ③, then moves in the

directions

①, ②, ①, and ③. After repeating the conversion, it moves to the buffer chamber 230.

Referring to FIG. 6 , the buffer chamber 230 has a first area A1 and a second area identically corresponding to the structure in which the noise reduction chamber 220 is divided into a first area A1 and a second area A2. It is divided into area A2. The buffer chamber 230 may be provided with a separate cover 231 detachably at the rear so that it may be partially opened and closed. When the cover 231 of the buffer chamber 230 is removed, the overall size of the buffer chamber 230 may be selectively increased by connecting to a separate buffer chamber (not shown) connected to the buffer chamber 230 .

6 and 7, the entrance chamber 240 is arranged to partially communicate with the buffer chamber 230, and when the valve 300 is opened inside the entrance chamber 240, all

openings

241a, 242a, 243a and formed to communicate.

Accordingly, air may be supplied or discharged through various paths according to the opening/closing operation of the valve.

For example, the first nozzle 241b and the third nozzle 243b are connected to the consumer by a hose, the second nozzle 242b is exposed to the outside air, and the buffer chamber 230 (or the entrance chamber 240) When the pressure is greater than that of the first nozzle 241b and only the first valve (see FIG. 5 310) is open, air may be supplied to a consumer through the first nozzle 241b. At this time, when the pressure of the first nozzle 241b is greater than the pressure of the buffer chamber 230 and only the first valve (see FIG. 5, 310) and the second valve (see FIG. 5, 320) are open, the first valve While the air flows backward through the 310, the air may be discharged to the outside through the second nozzle 242b. Of course, when the pressure of the first nozzle 241b and the third nozzle 243b is greater than the pressure of the buffer chamber 230, and the first valve 310 to the third valve (see FIG. 5, 330) are all open. , while the air flows backward through the first valve 310 and the third valve 330, the air can be discharged to the outside through the second nozzle 242b.

That is, when the second valve (refer to FIG. 5 320) is opened in a state where the pressures of the first nozzle 241b and the third nozzle 243b are relatively higher than those of the entry/exit chamber 240, the air of the consumer is supplied to the outside. can be ejected.

8 and 9 show a state in which the valve is opened and closed in the region D-D' of the noise reducing solenoid valve assembly shown in FIG. show

8 shows a state where the valve closes the opening and closing port, and FIG. 9 shows a state where the valve opens the opening port.

First, as shown in FIG. 8 , in a state where the first valve 310 is blocking the first opening/closing port 241a, the plunger 314 and the shielding member 315 simultaneously descend to close the first opening/closing port 241a. In this way, if the second valve 320 and the third valve 330 also close the second opening (see FIG. 6, 242a) and the third opening and closing opening (see FIG. 6, 243a), respectively, the noise reduction chamber (see FIG. 7 , 220 ), the buffer chamber (see FIG. 7 230 ), and the inside of the entrance/exit chamber 240 , air of a set capacity may be compressed and stored.

And, as shown in FIG. 9 , in a state in which the first valve 310 opens the first opening/closing port 241a, the plunger and the shielding member simultaneously rise to open the first opening/closing port 241a. In the state in which the first opening/closing port 241a is open, air is supplied to the consumer when the pressure of the entrance/exit chamber 240 is higher, or air from the consumer enters and exits when the pressure of the first nozzle (see FIG. 7 241b) is higher. It may flow backward in the direction of the chamber 240 . Normally, when the air inside the first nozzle 241b or the third nozzle 243b flows backward, the air flowing backward through the second nozzle 242b may be discharged to the outside.

Although not shown in the drawings, the description of the opening and closing operation of the second valve 320 and the third valve 330 provides the same structure as the operating structure of the first valve 310, so duplicate descriptions are omitted.

Therefore, according to the noise reduction type solenoid valve assembly according to the present invention, while the upright solenoid valve is arranged to operate in the vertical direction on the housing, it is possible to solve the problem of uneven wear or noise caused by valve operation, and thereby increase the usable life. Since the noise or pulsation included in the compressed air introduced into the noise reduction chamber can be minimized through the breaking structure, it is possible to maintain a low-noise design and continuous air supply pressure, and the capacity set inside the noise reduction chamber and buffer chamber Since air can be temporarily stored, sufficient space and time can be provided to absorb or dissipate noise and pulsating waves, and air supply and discharge routes can be adjusted in various ways through the opening and closing operation of the valve on the entry and exit chamber. There is an effect.

Although the above has been shown and described as specific embodiments to illustrate the technical idea of the present invention, the present invention is not limited to the same configuration and operation as the specific embodiments as described above, and various modifications do not depart from the scope of the present invention. can be carried out within Accordingly, such modifications should also be regarded as falling within the scope+ of the present invention, which should be determined by the claims set forth below.

100: Mattress core with adjustable sleep environment

110: first mattress

120: second mattress

130, 230, 330, 430: reinforcement part

140: housing

200: noise reduction solenoid valve assembly

300: upright solenoid valve

Claims

A housing including a noise reduction chamber provided with an inlet for introducing fluid into the interior, and an entrance/exit chamber provided with at least two outlets to discharge the fluid passing through the noise reduction chamber to the outside;

an upright solenoid valve coupled to open and close in the housing in a vertical direction to open and close the outlet;

Noise reduction type solenoid valve assembly comprising a.
The method of claim 1,

the housing,

A noise reduction type solenoid valve assembly comprising a buffer chamber disposed between the noise reduction chamber and the entrance chamber to temporarily store the fluid passing through the noise reduction chamber.
The method of claim 2,

The noise reduction chamber,

A noise reduction type solenoid valve assembly comprising a plurality of diaphragms for changing a moving direction a plurality of times while the fluid supplied from the inlet moves toward the buffer chamber.
The method of claim 2,

The noise reduction chamber,

At least one or more shielding walls dividing the interior from each other;

A first area and a second area divided around the shielding wall, and

In the process of supplying fluid from a first inlet provided in the first area or a second inlet provided in the second area provided inside the first area and the second area and moving in the direction of the buffer chamber, a plurality of moving directions are selected. Noise reduction solenoid valve assembly, characterized in that it comprises a plurality of diaphragms for converting times.
According to claim 3 or claim 4,

The buffer chamber,

Noise reduction type solenoid valve assembly, characterized in that arranged so that the air moves in the opposite direction to the direction of the air flowing inside the noise reduction chamber.
The method of claim 5,

The buffer chamber,

A noise reduction type solenoid valve assembly, characterized in that disposed so that one side communicates with the noise reduction chamber and the other side communicates with the entrance chamber.
The method of claim 2,

The entry chamber,

At least two openings and closing openings opened and closed by operation of the upright solenoid valve;

Including a nozzle that communicates with each of the openings and protrudes forward,

Noise reduction type solenoid valve assembly, characterized in that the opening and closing openings are arranged to communicate with each other when the upright solenoid valve is opened inside the entrance chamber.