WO2010030112A2

WO2010030112A2 - Air intake/discharge structure for vacuum pump and vacuum pump using the same

Info

Publication number: WO2010030112A2
Application number: PCT/KR2009/005100
Authority: WO
Inventors: 최영오
Original assignee: (주)한별특허기술개발
Priority date: 2008-09-09
Filing date: 2009-09-09
Publication date: 2010-03-18
Also published as: KR100960306B1; WO2010030112A3; KR20100030150A

Abstract

The present invention relates to an air intake/discharge structure for a vacuum pump and a vacuum pump using the same. The structure comprises a T-shaped ventilation body (10) including a central vertical pipe (a) and a circular horizontal plate (b), and vertical cylinders (20, 20’) of which the top is open. The body (10) includes an air intake hole (h2) and an air discharge hole (h3) which are respectively connected to a vent (h1) inside the central vertical pipe (a). In the vertical cylinders (20, 20’), the inner circumference and bottom central vent thereof are respectively coupled with the outer circumference of the circular horizontal plate (b) and the outer circumference of the central vertical pipe (a), and permitted to move. The intake/discharge structure draws air into a sealed container, which is about to form a vacuum, into the cylindrical space formed between the circular horizontal plate (b) and the bottoms of vertical cylinders (20, 20’), then discharges the air. According to the development of the intake/discharge structure and a vacuum pump using the same with the above features, the entire structure including an air discharge structure for expelling air from the vacuum pump is simplified and an excellent vacuum is secured. In addition, a small vacuum pump with high work efficiency is provided.

Description

Air suction and discharge structure for vacuum pump and vacuum pump using same

The present invention relates to an air intake / discharge structure for a vacuum pump and a vacuum pump using the same, and more particularly, to an air intake / discharge structure of a very preferred form capable of securing a high degree of vacuum while having a simple internal structure, and a vacuum pump using the same. Invention.

In order to prevent corruption of foods, it is common to put them in a sealed container and put them in a refrigerator. Recently, the inside of the sealed container is first vacuumed with a vacuum pump before being put into the refrigerator.

Even in the case of storing fruits and vegetables in a sealed container in a refrigerator, it is common to see their decay after a considerable period of time, and this decay process is due to the presence of air in the sealed container and the growth of microorganisms therein. In consideration of this, the vacuum storage as described above has a significant meaning in terms of suppressing corruption.

In view of this, in recent years, several types of vacuum pumps for hermetic containers have been developed and marketed.

However, due to the structural irrationality in which the intake from the sealed container to the vacuum pump and the evacuation operation from the vacuum pump to the atmosphere are simultaneously performed, the pumping operation for evacuation is difficult, and the overall structure including the exhaust passage structure There is a complicated problem.

Moreover, since it is a unique structure in which a conventional airtight O-ring is used as a valve member, air mixing on the exhaust passage is inevitable and high despite several pumpings. It is difficult to secure the degree of vacuum.

As another structural irrationality problem related to the degree of vacuum, it cannot be pointed out that a complete vacuuming operation is impossible since the air sucked into the vacuum pump from the sealed container to be evacuated is virtually completely discharged.

The present invention has been made in view of such a conventional problem, and provides an air intake / exhaust structure for a vacuum pump and a vacuum pump using the same, which are highly desirable in that the internal structure is simple and reasonable, so that a high degree of vacuum can be secured quickly with a small force. Its purpose is to.

An object of the present invention as described above is composed of a central vertical pipe portion and a circular horizontal plate portion at the top thereof, and a T-shaped ventilation body provided with a through hole in the central vertical pipe portion and an intake hole and an exhaust hole, respectively; An upper open cylindrical body, wherein an inner circumferential portion of the cylindrical body includes an outer circumferential surface of the circular horizontal plate portion, and a through-hole of the bottom center portion thereof comprises a vertical cylindrical body coupled to the outer circumferential surface of the vertical tube portion in a relative movable state; An air intake / exhaust structure for a vacuum pump that inhales the air inside the sealed container side to be evacuated and immediately discharges it into the atmosphere into a cylindrical space formed between the upper horizontal plate portion on the vent body and the bottom surface of the vertical cylinder; This is achieved by developing a vacuum pump using the air intake / exhaust structure of this characteristic structure.

In other words, the vacuum pump of this invention is a vacuum pump provided with the above-mentioned air discharge structure.

1 is a front view of a vacuum pump according to an embodiment of the present invention,

2 is a plan view of a vacuum pump according to the embodiment;

3 is a cross-sectional view taken along line A-A in FIG. 2;

4 is a plan view of the ventilation body constituting the vacuum pump of the embodiment of the present invention,

5 is a cross-sectional view taken along line B-B on FIG. 4;

Figure 6 is a plan view of the outer body constituting the vacuum pump of the embodiment of the present invention,

7 is a front view of the push operation body constituting the vacuum pump of the embodiment of the present invention;

8 is a cross-sectional view taken along line C-C on FIG. 7;

9 is a front sectional view of a vacuum pump showing a vacuuming process by the vacuum pump of the embodiment of the present invention;

10 is a cross-sectional view of the vacuum pump showing the final exhaust process by the vacuum pump of the embodiment of the present invention,

11 is a cross-sectional view of a vacuum pump according to another embodiment of the present invention and corresponds to FIG. 3.

Explanation of symbols on the main parts of the drawings

10: ventilation body 20, 20 ': vertical cylindrical body

30, 30 ': Lower support 40, 40': Outer body

50: spring 60, 60 ': pressing operation body

h2: intake hole h3: exhaust hole

EMBODIMENT OF THE INVENTION Hereinafter, the air suction / discharge structure and the vacuum pump using the same for a vacuum pump of an Example of this invention are demonstrated in detail based on an accompanying drawing.

1 is a front view of a vacuum pump according to an embodiment of the present invention, it can be understood that the operation interrupted state briefly during the pumping operation.

Here, the work suspended state means that both the intake and exhaust valves are closed by their elastic force as the work is stopped.

As shown, the vacuum pump of the present invention has a relatively simple shape in which the pressing body 60 protrudes upward from the outer cylinder 40, and the support plate 31 at the bottom of the outer cylinder 40 has a coupling structure. In some cases, it may not be revealed to the outside.

FIG. 2 is a plan view of the vacuum pump according to the above embodiment, which is merely a simple outline, but is shown in the meaning of revealing along which cutting line the vacuum pump cross section to be described below is taken.

As will be described later, in the vacuum pump of the embodiment, intake valves and exhaust valves are alternately arranged at 90 ° intervals on the same plane, so that these intake valves and exhaust valves are shown at right angles as in the AA line in order to show them on one cross section. A cut line is taken.

Referring to FIG. 3, which is a cross-sectional view along the line AA in FIG. 2, the air intake / exhaust structure of the vacuum pump according to the embodiment of the present invention will be described. (h1) and a T-shaped ventilating body (10) provided with an intake hole (h2) and an exhaust hole (h3), respectively; An open top cylindrical body, wherein the inner circumference of the cylindrical body includes an outer circumferential surface of the circular horizontal plate portion, and a through-hole of the bottom center portion thereof includes a vertical cylindrical body 20 coupled to the outer circumferential surface of the vertical pipe portion in a relative movable state, respectively. ; It is characterized in that the intake of the air inside the sealed container side to be evacuated into the cylindrical space formed between the upper horizontal plate portion on the vent body 10 and the bottom surface of the vertical cylindrical body 20, and then immediately discharge it to the atmosphere.

In addition, as shown in FIGS. 4 and 1BB, which are plan views of the ventilation body 10, and FIG. 5, the intake hole h2 and the exhaust hole h3 on the ventilation body 10 are circular horizontal plate portions b. It is formed through the upper end of the intake hole (h2) is connected to the upper end of the through hole (h1) in the central vertical pipe portion (a) through the passage groove (T) on the surface of the circular horizontal plate portion (b), these through holes (h1) ) And a cover plate 12 are attached above the intake hole h2, and the valve member V is attached to one opening of the intake hole h2 and the exhaust hole h3, respectively.

The cover plate 12 is attached by a method such as using an adhesive or fusion, and covers the upper opening of the passage groove T on the surface of the circular horizontal plate part b, and thus the through hole h1 in the central vertical pipe part a. ), One passage is connected to the intake hole h2. (See FIG. 5 Simultaneously)

As shown in Fig. 3, the vacuum pump using the air suction / discharge structure for the small vacuum pump of the above embodiment, that is, the vacuum pump of the embodiment of the present invention, has a central vertical pipe portion a and a circular horizontal plate portion b at the upper end thereof. A T-shaped ventilation body 10 having a through hole h1 in the central vertical pipe part a, and an intake hole h2 and an exhaust hole h3 of the connection structure, respectively; An upper open cylindrical body, wherein an inner circumferential portion of the cylindrical body is coupled to the outer circumferential surface of the circular horizontal plate portion (b), and a through hole in the bottom center portion thereof is coupled to the outer circumferential surface of the central vertical pipe portion (a) in a relative movable state (ie, 20); A lower supporter 30 coupled to a lower end of the central vertical pipe part on the vent body 10 and supporting the lower end; A cylindrical body coupled to the outer circumferential portion of the lower supporter 30, the outer cylindrical body 40 having a structure surrounding the ventilating body 10 and the vertical cylindrical body 20; A spring (50) included in the outer cylinder (40) and applying elasticity to the vertical cylindrical body (20); It comprises a press operating body 60 which transmits external press power with respect to the vertical cylinder 20 above the outer cylinder 40. As shown in FIG.

More specifically, the push operation body 60 has the structure through which the lower end part contacts the lower end outer end part of the said vertical cylindrical body 20 through the through-hole h5 of the upper end of the outer shape cylinder 40.

Here, the external pressing power means a force that the vacuum pump user presses the pressing manipulation body 60 by hand.

Seal rings (S) are mounted at the relative movement portions between the ventilating body (10) and the vertical cylindrical body (20), and these seal rings (S) are, of course, an O-ring as shown. Other shapes may be used.

The intake hole h2 and the exhaust hole h3 on the ventilating body 10 are formed through the circular horizontal plate part b, and the upper end of the intake hole h2 is concave on the surface of the circular horizontal plate part b. It is connected to the upper end of the through hole (h1) in the central vertical pipe portion (a) through the groove (T).

The lower support 30 is inserted together in contact with the support plate 31 as a disc body having a central through hole and a lower end of the central vertical pipe portion a on the vent body 10 in the central through hole on the support plate 31. It is comprised including the sealing tube 32, The threaded part for engagement with the said outer cylinder 40 is formed in the outer end part of the support plate 31. As shown in FIG.

The sealing tube 32 is a soft synthetic resin or a rubber material, and is a portion that comes into close contact with the exhaust port on the side of the sealed container to be evacuated.

On the support plate 31, it is preferable to form an annular positioning jaw (not shown) for holding the position of the lower end of the spring 50.

In addition, the support plate 31 has a through hole h6 having the same shape as the through hole h5 (see FIG. 6), which will be described later. After completion of the vacuuming operation, the press operating body 60 is turned upside down. This is to store the vacuum pump in the state inserted in (h6).

The through hole h6 is merely an example of storing the vacuum pump of the embodiment of the present invention to the last, and does not particularly limit the technical scope of the present invention.

In terms of material, the seal ring S and the sealing tube 32 are made of rubber (including silicon rubber) or soft synthetic resin, and the spring 50 is preferably made of metal or synthetic resin.

4 is a plan view of a ventilating body, which is an element of a vacuum pump according to an embodiment of the present invention, and which implicitly shows an air intake and exhaust structure for a vacuum pump according to an embodiment of the present invention.

As shown, the ventilating body 10 has an intake pipe 11 which forms the basis of the vertical pipe portion and the horizontal plate portion as described above, and is attached on the upper surface thereof to the through hole h1 and the passage groove T. And a valve plate (V) attached to one side opening of the intake hole (h2) and the exhaust hole (h3), and the cover plate (12) which maintains the airtight above the intake hole (h2).

One opening of the intake hole h2, that is, the valve member (intake valve) mounted at the lower end thereof, is not shown in the drawing.

The valve member (V) is made of a rubber or synthetic resin material having appropriate flexibility, and is shown as a structure for adhering one end thereof to the side of the intake hole (h2) and the through hole (h3) (the hatched portion represents the adhesive portion). Of course, the meaning is not limited to the simple valve structure as shown.

On the other hand, the same shape as the valve member V and indicated by a slightly larger outline is the portion of the valve seat, that is, the portion where the valve member mounting target portion is formed in a concave shape in advance.

Reference numeral R denotes ribs for reinforcing the upper end surface of the intake pipe 11, respectively. As shown in FIG. It is desirable to form a shape that becomes lower toward the stage.

Reference numeral G denotes a seal ring mounting groove formed along the edge of the horizontal plate portion.

For reference, in the illustrated embodiment, a central vertical pipe part a and a circular horizontal plate part b at the upper end thereof are provided together on the intake pipe 11, but these central vertical pipe parts a and the circular shape are provided. Each of the horizontal plate portions b may be separately manufactured to have a mutual coupling structure.

Such a structure is also included in the scope of the air intake and exhaust structure for a vacuum pump according to the present invention.

6 is a plan view of an outer body constituting the vacuum pump of the embodiment of the present invention.

The upper end of the outer cylindrical body 40 is formed with a plurality of arc-shaped through-holes (h5) at regular intervals, the lower end of the pressing operation body as described above is inserted through the through-hole (h5) into the outer body (40).

In other words, the through hole h5 serves as a guide rail for guiding the vertical reciprocating motion, that is, the pumping operation of the pressing operation body.

Reference numeral W2 denotes the width of the through hole h5, and reference numeral W1 denotes the width of the groove formed concavely outwardly in the central portion of the through hole h5.

Meanwhile, the part indicated by the dashed-dotted line in the drawing means that it is an erasable area. Even though this part is deleted, that is, removed from the aspect of the vacuum pump design, there is no problem in serving as a vacuum pump.

In other words, within the range that does not significantly reduce the rigidity of the through hole (h5), that is, to maintain the robustness such that problems such as the shake of the open hole (h5) during the vertical reciprocating motion of the pressing operation body does not occur It is also possible to form a through hole (see the dashed-dotted line) in the center of the upper end of the outer cylinder 40 within the range, and the erasable region is formed at the center of the upper end of the outer cylinder 40 within a range that maintains proper rigidity. Means possible hole part.

7 and 8 are front and sectional views taken along line C-C of the push operation body constituting the vacuum pump of the embodiment of the present invention.

As shown, the push manipulator 60 comprises a top face in the form of a circular horizontal plate and a side wall extending vertically downward from the top face, the side wall being a plurality of zones bounded by a plurality of openings H. As shown in FIG. There are features separated by.

By forming the ribs R as described above in the central portion of each zone of the side wall, it is preferable to compensate for the decrease in rigidity of the entire side wall due to the presence of the opening H.

On the other hand, reference numeral w1 denotes a width for each zone on the sidewall, and reference numeral w2 denotes a width of the rib R, respectively.

The side wall of each zone on the push manipulator 60 is inserted into the through hole h5 (see FIG. 6) on the top surface of the outer body as described above, and is vertically reciprocated. Of course, it has a shape and dimensions corresponding to (h5).

Referring to FIG. 9, a process of substantially evacuating a vacuum using a vacuum pump according to an exemplary embodiment of the present invention, that is, a process of extracting air inside the sealed container side will be described.

First, the sealing tube 32 constituting the lowermost end of the vacuum pump is brought to an exhaust port (not shown) on the side of the vacuum container to be evacuated, and then the pressing operating body 60 is pressed. (See arrow)

On the other hand, the closed container side exhaust port is provided with a separate valve member having a structure that is open to the outside of the container, that is, toward the air, and the valve member is normally kept closed by atmospheric pressure.

As the push manipulator 60 and the vertical cylindrical body 20 in contact therewith are simultaneously lowered, a cylindrical space is formed and expanded between the upper horizontal plate portion on the ventilating body 10 and the bottom surface of the vertical cylindrical body 20. Underpressure is formed in the space.

According to the principle that the gas flows from the high pressure space to the low pressure space, the air inside the high pressure space, that is, the sealed container side to be evacuated, opens the separate valve member on the closed container exhaust port side and escapes into the through hole h1 in the central vertical pipe portion. Then, it passes through the intake hole and then flows into the cylindrical space while opening the left valve member, that is, the intake valve, in the drawing. (See arrow) (No reference numerals are shown to avoid complicated drawing)

While the lowering of the vertical cylindrical body 20 is in progress, the right valve member, that is, the exhaust valve, is pressed by the atmospheric pressure to maintain the closed state.

Referring to FIG. 10, the process of returning to the original state by the spring force of the spring, that is, the process of the final exhaust from the cylindrical space in the vacuum pump to the atmosphere is as follows.

When the user removes the pressing force against the pressing operating body 40, as the elastic restoring force of the spring 50 in the compressed state acts, the vertical cylindrical body 20 and the pressing operating body 40 are raised to raise the vertical cylindrical body ( The cylindrical space above the bottom surface of 20) is reduced while its internal pressure is higher than the internal pressure on the closed vessel side.

As a result, the left valve member (intake valve) in the figure is closed by the high pressure in the cylindrical space above the bottom surface of the vertical cylindrical body 20.

If the cylindrical space is reduced to some extent as the spring force of the spring 50 continues to act, the internal pressure is higher than atmospheric pressure and the right valve member, that is, the exhaust valve is opened toward the atmosphere, the final of the internal air. Exhaust is made. (See arrow)

By repeatedly performing this process, the air inside the sealed container to be evacuated is taken out into the atmosphere to achieve a vacuum state.

At the same time as the exhausting operation is completed, the sealing tube and the sealed container are separated into mutually spaced areas with the separate valve member on the sealed container exhaust port side as mentioned above.

Therefore, the entire vacuum pump including the sealing tube can be easily separated from the hermetically sealed container having an internal vacuum situation.

On the other hand, at the completion of the final exhaust process, i.e., when the upper horizontal plate portion on the vent body 10 and the bottom surface of the vertical cylindrical body 20 come into contact with each other, the volume of the cylindrical space therebetween becomes zero (0), As the pumping operation is continued, all the air inside the sealed container to be evacuated is evacuated, and as a result, the inside of the sealed container is completely evacuated.

As described above, it will be emphasized again that complete vacuuming within the sealed container to be evacuated is one of the main features of the air intake / exhaust structure for the vacuum pump and the vacuum pump using the same.

FIG. 11 is a cross-sectional view illustrating a vacuum pump according to another exemplary embodiment of the present invention, and corresponds to FIG. 3.

The difference with respect to the vacuum pump of the above-described embodiment is that the pressing operation body 60 'is coupled to the upper end of the vertical cylindrical body 20' (screwed in the drawing) while the upper end of the outer cylinder 40 'is opened. There is one characteristic.

In this case, an appropriate number of protrusions are formed on the outer end of the lower end of the vertical cylindrical body 20 ', and a vertical guide groove having a corresponding shape is formed on the inner circumferential surface of the outer cylindrical body 40', thereby providing the outer cylindrical body 40 '. The inner peripheral surface of the vertical cylindrical body 20 'to support and guide the reciprocating motion.

The interrelationship between these protrusions and the guide grooves is the relationship between the ribs R on the pressing manipulator 60 (see FIG. 8) and the center grooves on the through hole h5 (see FIG. 6), that is, the appearance. It is to be understood that the vertical guide groove on the inner circumferential surface of the cylinder 40 'is the same as the relationship serving as a guide rail for the lower end of the outer cylinder 40'.

The lower support 30 'is the same as the embodiment described above except that there is no through hole h6 (see FIG. 3).

It is obvious that the vacuum pump of this embodiment also uses the air suction / discharge structure for the vacuum pump of the present invention described above.

As mentioned above, although the air suction / discharge structure and the vacuum pump using the same for the vacuum pump of the Example of this invention were demonstrated in detail based on an accompanying drawing, various design changes within the range which does not deviate from the meaning of this invention will be possible.

However, it should be understood that all minor changes which characterize the configuration specified in the claims are within the technical scope of the present invention.

According to the present invention, it is possible to obtain a compact vacuum pump of a very preferred form, in which the overall structure including the structure of evacuating the air from the vacuum pump to the atmosphere is simple, as well as high vacuum degree, that is, it is possible to secure a full vacuum state and work efficiency is high.

Claims

It consists of a central vertical pipe portion (a) and a circular horizontal plate portion (b) at the top thereof, and includes a through hole (h1) in the central vertical pipe portion (a) and an intake hole (h2) and an exhaust hole (h3) of the connection structure, respectively; A T-shaped venting body 10; An upper open cylindrical body, wherein an inner circumferential portion of the cylindrical body is coupled to the outer circumferential surface of the circular horizontal plate portion (b), and a through hole in the bottom center portion thereof is coupled to the outer circumferential surface of the central vertical pipe portion (a) in a relative movable state (ie, 20); It is characterized in that the intake of the air inside the sealed container side to be evacuated into the cylindrical space formed between the circular horizontal plate portion (b) on the ventilating body 10 and the bottom surface of the vertical cylindrical body 20 and immediately discharge it to the atmosphere. Air suction and discharge structure for vacuum pump
The method of claim 1,

The intake hole h2 and the exhaust hole h3 on the ventilation body 10 are formed through the circular horizontal plate part b, and the upper end of the intake hole h2 is a passage groove T on the surface of the circular horizontal plate part b. It is connected to the upper end of the through hole (h1) in the central vertical pipe portion (a) through the), and the cover plate 12 is attached above the through hole (h1) and the intake hole (h2), the intake hole (h2) and exhaust Air suction and discharge structure for a vacuum pump, characterized in that the valve member (V) is attached to one opening of the ball (h3), respectively.
It consists of a central vertical pipe portion (a) and a circular horizontal plate portion (b) at the top thereof, and includes a through hole (h1) in the central vertical pipe portion (a) and an intake hole (h2) and an exhaust hole (h3) of the connection structure, respectively; A T-shaped venting body 10; An upper open cylindrical body, wherein an inner circumferential portion of the cylindrical body is coupled to the outer circumferential surface of the circular horizontal plate portion (b), and a through hole in the bottom center portion thereof is coupled to the outer circumferential surface of the central vertical pipe portion (a) in a relative movable state (ie, 20, 20 '); Lower supporters 30 and 30 'coupled to the lower end of the central vertical pipe part a on the vent body 10 and supporting the lower end; A cylindrical body coupled to the outer circumferential portion of the lower supports 30 and 30 ', and having an outer cylindrical body 40 and 40' having a structure surrounding the venting body 10 and the vertical cylindrical bodies 20 and 20 '; A spring (50) contained in the outer cylinder (40, 40 ') and applying elasticity to the vertical cylindrical body (20, 20'); A vacuum pump comprising a push manipulator (60, 60 ') for transmitting external push power to the vertical cylinder (20, 20') above the outer cylinder (40, 40 ').
The method of claim 3, wherein

The intake hole h2 and the exhaust hole h3 on the ventilation body 10 are formed through the circular horizontal plate part b, and the upper end of the intake hole h2 is a passage groove T on the surface of the circular horizontal plate part b. It is connected to the upper end of the through hole (h1) in the central vertical pipe portion (a) through the), and the cover plate 12 is attached above the through hole (h1) and the intake hole (h2), the intake hole (h2) and exhaust A vacuum pump, characterized in that the valve member (V) is attached to one side opening of the ball (h3), respectively.
The method of claim 3, wherein

Vacuum pump, characterized in that the seal ring (S) is mounted on the relative movement between the vent body (10) and the vertical cylindrical body (20).
The method of claim 3, wherein

The lower supporters 30, 30 'are support plates 31, 31' as a disk body having a central hole, and a central vertical tube portion a on the vent body 10 in the central hole on the support plates 31, 31 '. It is configured to include a sealing tube 32 is inserted together in contact with the lower end, characterized in that the outer end of the support plate (31, 31 ') is formed with a screw for coupling with the outer cylinder (40, 40') Vacuum pump.
The method of claim 3, wherein

The push manipulator (60) is a vacuum pump, characterized in that the through-hole (h5) of the upper end of the outer cylindrical body (40) and its lower end is in contact with the lower outer end of the vertical cylindrical body (20).
The method of claim 3, wherein

The press operating body (60 ') is coupled to the upper end of the vertical cylindrical body (20'), the upper end of the outer cylinder (40 ') is a vacuum pump, characterized in that open.
The method according to claim 3 or 7,

The pressing manipulator (60) is composed of a circular horizontal plate portion at the top and a sidewall portion extending vertically downwards therefrom, wherein the sidewall portion is separated by a plurality of openings (H) as a boundary.
The method according to claim 3 or 8,

A plurality of protrusions are formed at the outer end of the lower end of the vertical cylindrical body (20 '), and a vertical guide groove having a corresponding shape is formed on the inner circumferential surface of the outer cylindrical body (40').