KR20220145639A - Vacuum generator - Google Patents

Abstract

Disclosed is a vacuum generator. According to the present invention, the vacuum generator comprises: a first block in which air emission holes having an inlet and an outlet are formed in a straight line on the center, an air inlet groove connected with a compression air supply unit is formed around the inlet while forming a concentric circle with the air emission hole and interposing a partition wall therebetween, and a first inducement curved surface curved from the outside to the inside of the inlet is formed on an end part of the partition wall; and a second block in which a negative pressure generation hole matched with the air emission hole is formed on the center, an insertion coupling unit, of which a part is inserted into the inlet, is formed around the negative pressure generation hole corresponding to the inlet while protruding from a surface, a second inducement curved surface is formed on the outer circumferential surface of the insertion coupling unit corresponding to the first inducement curved surface to form a compression air flow path curved between the first inducement curved surface and the second inducement curved surface, and a vacuum chamber is formed on an opposite side of the insertion coupling unit. When compression air supplied from the compression air supply unit is emitted from the air emission hole through the compression air flow path, negative pressure is generated in the vacuum chamber as air inside the vacuum chamber is moved to the outlet through the negative pressure generation hole.

Description

Vacuum generator {VACUUM GENERATOR}

The present invention relates to a vacuum generator, and more particularly, a vacuum generator capable of forming a negative pressure using compressed air with a small number of parts and a simple structure, controlling the degree of vacuum, and forming a stable negative pressure is about

A vacuum pump (vacuum generator) generally refers to a device that exhausts a predetermined space using high-speed compressed air in a vacuum transport system. Among these vacuum pumps, in particular, a compressed air supply line and an exhaust line arranged in a straight line are called "in-line vacuum pumps". Since a separate pumping means is not required by using this device, there is a very advantageous advantage in the design of the transport system.

As a prior art of the vacuum pump, Korean Patent Registration No. 10-1157542 (published on June 22, 2012) discloses an in-line vacuum pump. Such a vacuum pump has a cylindrical housing in which a discharge port is formed in a lower portion of a side wall, a discharge passage extending laterally from the upper surface hole, and a longitudinal path not communicating with the discharge passage, and the discharge passage when mounted inside the housing The end of the vacuum includes a guide communicating with the outlet port, an upper inlet, a lower outlet, and a side wall inlet, wherein the inlet portion is fixed to the upper end of the housing when disposed inside the housing, and the outlet portion is fitted into the hole An ejector and a gripper connector coupled to the lower end of the housing, the gripper connector having an exhaust passage communicating with the inlet via the pass therein.

The vacuum pump according to the prior art has the effect that the generation and maintenance of a vacuum can be made stably, and the selection and application of the ejector is relatively free.

However, these vacuum pumps have a large number of parts and a complicated structure, which increases the manufacturing cost, and has problems in that maintenance is difficult, and it is difficult to control the degree of vacuum.

. Republic of Korea Patent No. 10-1157542 (Announcement Date: 2012.06.22)

An object of the present invention is to provide a means for remarkably reducing the number of components, stably forming the negative pressure, and controlling the degree of vacuum by simply configuring the structure for forming the negative pressure that enables vacuum adsorption.

In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

The above object is, according to the present invention, an air outlet hole having an inlet and an outlet in the center is formed in a straight line, and around the inlet, an air inlet groove connected to the compressed air supply unit is concentric with the air outlet hole with a partition wall interposed therebetween. a first block having a first guide curved surface curved from the outside to the inside of the inlet at the end of the partition wall; and a negative pressure forming hole coincident with the air outlet hole is formed in the center, and an insertion coupling part partially inserted into the inlet is formed protruding from the surface around the negative pressure forming hole corresponding to the inlet, and corresponding to the first guided curved surface A second block is formed on the outer circumferential surface of the insertion coupling part to be a second guide curved surface so that a curved compressed air flow path is formed between it and the first guide curved surface, and a vacuum chamber is formed on the opposite side of the insertion coupling part, When compressed air supplied from the compressed air supply unit is discharged to the air discharge hole through the compressed air flow path, negative pressure is generated in the vacuum chamber as the air inside the vacuum chamber moves to the discharge port through the negative pressure forming hole It is achieved by a vacuum generator, characterized in that.

Between the outer edge of the air inlet groove and the surface of the second block, 1-7 for maintaining the airtight between the first block and the second block, and adjusting the interval of the compressed air flow path to increase or decrease the degree of vacuum A gap control film may be provided.

The curvature of the first guided curved surface and the second guided curved surface forming the compressed air flow path may be the same, and the compressed air may be discharged in the direction of the air discharge hole.

The compressed air passage may include a curved portion for guiding compressed air supplied in a straight direction from the air inlet groove toward the air outlet; and a straight part formed in parallel with the air outlet hole so that the compressed air passing through the curved part is discharged toward the outlet.

A breaking means for breaking the vacuum is provided in the first block and the second block, and the breaking means includes: a breaking air supply hole provided in the first block to be connected to a breaking air supply part; and a breaking hole formed in the second block to coincide with the breaking air supply hole so that the breaking air supplied from the breaking air supply unit is supplied to the vacuum chamber.

The digging hole may be formed of 1 to 4 holes.

According to the present invention, the vacuum generator is provided with a first block consisting of an air discharge hole and an air inlet groove, a vacuum chamber and a negative pressure forming hole, and is combined with the first block to form a compressed air flow path. It is possible to provide an effect that the components can be simplified, so that not only can the number of products be reduced, but also maintenance can be made easily.

In addition, it is possible to provide an effect of controlling the degree of vacuum by adjusting the number (thickness) of the gap control film provided between the first block and the second block to adjust the gap of the compressed air flow path.

1 is a bottom exploded perspective view of a vacuum generator according to the present invention.
FIG. 2 is a bottom surface coupled perspective view of the vacuum generator shown in FIG. 1 .
3 is a cross-sectional view taken along line AA of FIG. 2 .
4 is a cross-sectional view taken along line BB of FIG. 2 .
5 is a cross-sectional view taken along line CC of FIG. 2 .
6 is a cross-sectional view taken along line DD of FIG. 2 .
7 is a schematic cross-sectional view for explaining a negative pressure forming process of the vacuum generator according to the present invention.
8 is a schematic cross-sectional view for explaining a process in which the vacuum of the vacuum generator according to the present invention is broken.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.

In this specification, the terminology used is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, 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 elements.

In this specification, when a certain element is referred to as being “connected” to another element, it may be directly connected to the other element, but it should be understood that another element may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle.

In this specification, the terms used are only used to describe specific embodiments, and are not intended to limit the present invention.

In this specification, the singular expression includes the plural expression unless the context clearly dictates otherwise.

Among the accompanying drawings, Figure 1 is an exploded perspective view of the bottom of the vacuum generator according to the present invention, Figure 2 is a bottom coupled perspective view of the vacuum generator shown in Figure 1, Figure 3 is a cross-sectional view taken along line A-A of Figure 2, Fig. 4 is a cross-sectional view taken along line B-B of FIG. 2 , and FIG. 5 is a cross-sectional view taken along line C-C of FIG. 2 . And, FIG. 6 is a cross-sectional view taken along line D-D of FIG. 2 .

1 to 6, the vacuum generator 10 according to the present invention is for forming a vacuum degree in order to vacuum adsorb various products, and an air discharge hole 22 and an air inlet groove 24 and a compressed air flow path ( 40) comprising a second block 30 having a second guided curved surface 34A. In this vacuum generator 10, when the compressed air supplied from the compressed air supply unit 80 is discharged to the air discharge hole 22 through the compressed air flow passage 40, the air inside the vacuum chamber 36 is negative pressure type. Negative pressure is generated in the vacuum chamber 36 as it moves through the succession 32 to the outlet 22B.

This will be described in more detail.

3, the first block 20 constituting the upper body of the vacuum generator 20 has a cylindrical shape having a predetermined length, and an inlet 22A is formed in the inner center on one side and an outlet 22B on the other side. ) The air outlet hole 22 is formed is formed in a straight line. That is, the air outlet hole 22 having an inlet 22A and an outlet 22B inside the first block 20 having a predetermined length is formed in a straight line along the longitudinal direction.

Hereinafter, with reference to FIG. 3 , it is assumed that the outlet 22B is positioned at the upper portion and the inlet 22A is positioned at the lower portion.

In addition, a connecting body 50 for coupling with an appliance is coupled to one surface of the first block 20 on the side of the outlet 22B, and the silencer 52 is coupled to communicate with the outlet 22B through the connecting body 50 . do.

The air inlet groove 24 is for receiving compressed air and guiding it to the air outlet hole 22, and parallel to the air outlet hole 22 around the inlet 22A so as to form a concentric circle with the air outlet hole 22. dent is formed. The air inlet groove 24 has a cylindrical shape as a whole and is connected to the air supply hole 25 formed on the side surface of the first block 20 . A supply pipe connected to the compressed air supply unit 80 is coupled to the air supply hole 25 . With this structure, the compressed air generated and supplied from the compressed air supply unit 80 may be uniformly supplied to the entire air inlet groove 24 through the air supply hole 25 .

The first guide curved surface 26 is formed continuously on the inner peripheral surface of the inlet 22A, that is, the end and the inner peripheral surface of the partition wall 23 between the air inlet groove 24 and the air outlet hole 22 . The first guided curved surface 26 has a fallopian tube shape that gradually widens from the inside of the air outlet hole 22 to the outside of the inlet 22A. In other words, the first guided curved surface 26 is formed to be curved from the outside of the partition wall 23 to the inside of the inlet 22A.

On the other hand, in the first block (20), the digging air supply hole (27) constituting the scraping means (90) is formed in parallel with the air outlet hole (22), and the destroying air supply hole (27) is the discarding air supply part The connection pipe of (96) is in communication with the breaking air connection hole (27A) formed on the side of the first block (20) to be coupled.

The second block 30 is provided with a vacuum chamber 36 and is coupled to the first block 20 to form a compressed air flow path 40 , and a negative pressure forming hole coincides with the air discharge hole 22 in the center. (32) is formed. The insertion coupling portion 34 is formed to protrude in a conical shape from the surface around the negative pressure forming hole 32 corresponding to the inlet 22A.

A second guide curved surface 34A is formed to be curved on the outer peripheral surface of the insertion coupling portion 34 . The second guided curved surface 34A is a curved surface formed between the peripheral surface of the negative pressure forming hole 32 and the outer peripheral surface of the insertion coupling portion 34 .

The protruding insertion coupling portion 34 is partially inserted into the inlet 22A when the second block 30 is coupled to the first block 20 .

The above-described first guided curved surface 26 and the second guided curved surface 34A are formed to have the same curvature.

And when the second block 30 is coupled to the first block 20, a portion of the insertion coupling portion 34 protrudingly formed is inserted into the inlet 22A. Accordingly, a curved compressed air flow path 40 is formed between the first guided curved surface 26 and the second guided curved surface 34A.

As shown in FIG. 3 , the compressed air flow path 40 receives the compressed air supplied in a straight direction (directly downward with respect to FIG. 3 ) from the air inlet groove 24 in the 360° opposite direction to the air outlet hole 22 . It consists of a curved part 42 for guiding the direction, and a straight part 44 formed in parallel with the air exhaust hole 22 so that the compressed air passing through the curved part 42 is discharged toward the exhaust port 22B. In particular, the straight portion 44 is formed by a straight portion on the inner circumferential surface of the inlet portion 22A where the first guide curved surface 26 ends and a straight portion on the outer circumferential surface of the insertion coupling portion 34 where the second guide curved surface 34A is not formed, Compressed air discharged through the straight part 44 can be quickly drawn out to the outlet 22B along the inner circumferential surface of the inlet 22A and the inner circumferential surface of the air outlet 22 .

A vacuum chamber 36 is formed on the opposite side of the insertion coupling portion 34 of the second block 30 . The vacuum chamber 36 communicates with the adsorption block 70 coupled to the second block 30 , the adsorption tube, the adsorption pad, and the like. Accordingly, when a negative pressure is formed in the vacuum chamber 36 , the adsorbent in contact with the outer surface of the adsorption block 70 is adsorbed by the adsorption block 70 .

The destruction means 90 is formed in the second block 30 so as to coincide with the destruction air supply hole 27 formed in the first block 20 and the destruction air supply hole 27 formed in the first block 20 as described above. It is configured to include a pore hole 37 so that the evacuation air supplied from the supply unit 96 is supplied to the vacuum chamber 36 . The drilling holes 37 are formed to penetrate toward the peripheral surface of the insertion coupling portion 34 in the vacuum chamber 36, and four are formed radially at positions not interfering with the screw coupling holes by maintaining a 90° angle. In this way, when the first block 20 and the second block 30 are combined by forming the four drilling holes 37 in this way, when the four bolt coupling holes coincide with each other, one drilling air supply hole 27 and 4 This is to improve assembling property by making the digging hole 37 of any one of the dogs match. That is, even if the bolt coupling holes in any direction coincide, the air supply hole 27 and any one of the four digging holes 37 are consistent with each other.

An O-ring insertion groove for installing an O-ring for airtightness is formed on the surface of the second block 30 .

When the first block 20 and the second block 30 are coupled by the respective coupling bolts, between the first block 20 and the second block 30, that is, the outer edge of the air inlet groove 24 and Between the surface of the second block 30, maintaining the airtight between the first block 20 and the second block 30, by adjusting the gap (t) of the compressed air flow path 40 to increase or decrease the degree of vacuum For 1 - 7 gap control film 60 is provided.

The gap control film 60 has a thickness of 0.05mm - 0.2mm, and serves as a packing for maintaining airtightness between the first and second blocks 20 and 30 and the gap between the first and second blocks 20 and 30 is to adjust the interval of the compressed air flow path 40 by adjusting. That is, when one 0.1mm-thick spacing control film 60 is disposed between the first and second blocks 20 and 30, the compressed air flow path 40 has an interval of 0.1mm, so the speed of the discharged air is fast. and the vibration level is increased. In addition, when three 0.1mm-thick spacing control films 60 are disposed between the first and second blocks 20 and 30, the compressed air flow path 40 has an interval of 0.3mm, so the amount of discharged air is immediately increased. Although the discharge speed is slow, the discharge amount may be increased to increase the vacuum force.

In this way, the degree of vacuum inside the vacuum chamber 36 through the adjustment of the gap (t) of the compressed air flow path 40 by adjusting the number of the gap control films 60 disposed between the first and second blocks 20 and 30. can be adjusted.

On the other hand, the gap control film 60 is formed with a through-hole 61 for making the digging air supply hole 27 and the digging hole 37 coincide with each other. The digging air supply hole 27 and the digging hole 37 may be coincidentally communicated with each other by the through hole 61 .

The operation of the vacuum generator 10 according to the present invention configured as described above will be described.

Of the accompanying drawings, Figure 7 is a schematic cross-sectional view for explaining the negative pressure forming process of the vacuum generator according to the present invention.

7, when compressed air is supplied from the compressed air supply unit 80 to the air inlet groove 24, the compressed air is discharged from the inside of the air outlet hole 22 through the compressed air flow path 40 ( 22B) direction.

As the compressed air is rapidly discharged toward the outlet 22B through the compressed air flow path 40, the pressure around the inlet 22A is lowered. After moving toward 22A), it rapidly moves toward the outlet (22B) together with compressed air.

In this process, the pressure inside the vacuum chamber 36 is lowered to form a negative pressure, and the adsorbent can be adsorbed on the outer surface of the adsorption block 70 .

At this time, in order to increase or decrease the degree of vacuum inside the vacuum chamber 36, as described above, the number (thickness control) of the interval control film 60 is adjusted to adjust the interval (t) of the compressed air flow path 40 . . As the interval of the compressed air passage 40 is narrowed or widened, the speed or amount of the discharged air is changed, so that the degree of vacuum inside the vacuum chamber 36 can be adjusted.

Meanwhile, in the accompanying drawings, FIG. 8 is a schematic cross-sectional view for explaining a process in which the vacuum of the vacuum generator according to the present invention is broken.

As shown in FIG. 8 , when the supply of compressed air for vacuum formation is cut off and the breaking air is supplied from the breaking air supply unit 96 to the breaking air supply hole 27 , the breaking air is removed from the breaking air supply hole 27 . It is discharged to the digging hole 37 through the. Accordingly, the vacuum inside the vacuum chamber 36 is released.

In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

10: vacuum generator 20: first block
22: air outlet hole 24: air inlet groove
22A: inlet 22B: outlet
26: first guided curved surface 30: second block
32: negative pressure forming hole 34: insertion coupling part
34A: second guided curved surface 36: vacuum chamber
40: compressed air flow path 50: connecting body
52: silencer 60: gap maintaining film
70: adsorption block 80: compressed air supply
90: means of destruction

Claims (6)

An air outlet hole having an inlet and an outlet in the center is formed in a straight line, and an air inlet groove connected to the compressed air supply unit is formed concentrically with the air outlet hole with the partition wall interposed therebetween, and the end of the partition wall a first block having a first guide curved surface curved from the outside to the inside of the inlet; and
A negative pressure forming hole coincident with the air outlet hole is formed in the center, and an insertion coupling part partially inserted into the inlet is formed protruding from the surface around the negative pressure forming hole corresponding to the inlet, and corresponding to the first guided curved surface A second guiding curved surface is formed on the outer peripheral surface of the insertion coupling part to form a curved compressed air flow path between the insertion coupling part and the first guiding curved surface, and a second block in which a vacuum chamber is formed on the opposite side of the insertion coupling part,
When the compressed air supplied from the compressed air supply unit is discharged to the air discharge hole through the compressed air flow path, as the air inside the vacuum chamber moves to the discharge port through the negative pressure forming hole, a negative pressure is generated in the vacuum chamber characterized in that
vacuum generator. According to claim 1,
Between the outer edge of the air inlet groove and the surface of the second block,
Maintaining the airtightness between the first block and the second block, characterized in that 1 to 7 gap control films are provided to increase or decrease the degree of vacuum by adjusting the interval of the compressed air flow path,
vacuum generator. According to claim 1,
The curvature of the first guide curved surface and the second guide curved surface forming the compressed air flow path is formed to be the same, characterized in that it is formed to discharge compressed air in the direction of the air discharge hole,
vacuum generator. 4. The method of claim 3,
The compressed air flow path is
a curved part for guiding compressed air supplied in a straight direction from the air inlet groove toward the air outlet hole; and
characterized in that it consists of a straight part formed in parallel with the air outlet hole so that the compressed air passing through the curved part is discharged toward the outlet,
vacuum generator. According to claim 1,
In the first block and the second block,
A destruction means for breaking the vacuum is provided, and the destroying means,
a digging air supply hole provided in the first block to be connected to the digging air supply unit; and
characterized in that it is formed in the second block to coincide with the evacuation air supply hole and comprises a void hole for supplying the voiding air supplied from the voiding air supply unit to the vacuum chamber,
vacuum generator. 6. The method of claim 5,
The digging hole is
Characterized in that it consists of 1 - 4,
vacuum generator.

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