KR20100024017A - A vacuum pump for an airtight container - Google Patents

Abstract

The present invention relates to a vacuum pump for a sealed container,

A cylindrical body having an open lower end portion having a cylindrical body 10 formed at an inner central upper end portion thereof, a lower movable body 20 coupled to a lower end of the cylindrical space in the cylindrical body 10 in a relative movable state, and the lower movable element ( 20 that penetrates the center portion and has an upper end portion connected to the cylinder body 10 and penetrates an upper end portion of the cylinder body 10 and extends vertically downward to contact the lower movable body 20. Press power transmission 40, a lower support 50 coupled to the lower end of the intake pipe 30 and the lower end of the cylinder 10, and a spring located between the lower movable body 20 and the lower support 50 ( By including 60),

Since the internal structure is simple and reasonable, it is possible to obtain a vacuum pump for a hermetically sealed container in which a high degree of vacuum can be secured quickly with little force.

Description

Vacuum pump for an airtight container

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum pump for a closed container, and more particularly, to a vacuum pump of a very preferred form capable of ensuring a high degree of vacuum while having a simple internal structure.

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 or vegetables in an airtight container in a refrigerator, it is common to confirm their decay after a considerable period of time, and the process of decay is due to the presence of air inside the airtight container and the propagation of microorganisms. Vacuum state storage such as this is said to have 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 structural irrationality such as the intake from the sealed container to the vacuum pump and the evacuation operation from the vacuum pump to the atmosphere at the same time, it is difficult to pump the pumping operation for the vacuumization, and also includes the exhaust passage structure as a whole. There is a complicated structure.

Furthermore, since it is a kind of unusual structure that uses a conventional airtight O-ring as a valve, it is inevitable that air is mixed on the exhaust passage and high vacuum is maintained despite several pumpings. It is inevitable to point out the intrinsic problem that is actually difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and an object thereof is to provide a vacuum pump for a closed container of a preferred form, which is capable of ensuring a high degree of vacuum quickly with low force due to a simple and reasonable internal structure.

The object of the present invention as described above is achieved by adopting an air releasing structure in which the air inside the vacuum container to be evacuated is sucked into the cylindrical space having the through hole and the valve plate leading to the atmosphere, and at the same time, the air is discharged directly to the atmosphere.

According to the present invention, it is possible to obtain a vacuum pump for an airtight container of a very preferable form, in which the overall structure including the air discharge structure from the vacuum pump to the atmosphere is simple as well as high vacuum can be secured and work efficiency is high.

EMBODIMENT OF THE INVENTION Hereinafter, the vacuum pump for sealed containers of the Example of this invention is demonstrated in detail based on an accompanying drawing.

As shown in the front sectional view of FIG. 1, the vacuum pump for sealed containers which concerns on the 1st Embodiment of this invention is the cylinder 10 in which the cylindrical space which opened the lower end was formed in the inner center upper part, and this cylinder 10 inside The lower movable body 20 coupled to the lower end of the cylindrical space in the center upper end in a state capable of relative movement, and the intake pipe 30 penetrating the central portion of the lower movable body 20 and the upper end coupled to the cylinder 10. And a push power transmission body 40 extending vertically downward through the upper end of the cylinder 10 and contacting the lower movable body 20, a lower end of the intake pipe 30, and a lower end of the cylinder 10. It is configured to include a bottom support 50 coupled with the spring 60 located between the bottom movable body 20 and the bottom support 50.

The lower movable body 20 includes a disk-shaped upper end surface 21 having a central through hole and a side wall 22 having a lower end portion bent outward from the upper end surface 21. And a groove for inserting the inner diameter seal member S1 in the central through-edge portion on the top surface 21, a groove for the outer diameter seal member S2 in the outer end portion of the upper surface 21, respectively, An outer end of the 22 is formed with an annular groove in which the lower end of the push power transmission body 40 is engaged.

The lower supporter 50 includes a support plate 51 as a disc body having a central hole and a sealing tube 52 inserted together in contact with the lower end of the intake pipe 30 in the central hole on the support plate 51. It is configured to include, the outer end of the support plate 51 is formed with a screw portion for coupling with the cylinder (10).

The sealing tube 52 is a soft synthetic resin or a rubber material that is in close contact with the outlet side of the closed container to be evacuated.

In addition, it is preferable to form an annular positioning jaw 53 for holding the position of the lower end of the spring 60 on the support plate 51.

Reference numeral “33” denotes a valve body for preventing gas backflow from the vacuum pump to the sealed container, and the shape and associated structure of the valve body 30 is a conventional check valve that is common in the field of fluid control. It is understood that the same as the valve) structure.

On the other hand, the vacuum pump as shown is a storage state in which the press power transmission body 40 is completely pressed, and then slightly rotated to either side, and in this state, the press power transmission body 40 via a locking jaw, which will be described later. ) Is held on the upper surface of the cylinder (10).

Fig. 2 is a front view of the vacuum pump of the embodiment of the present invention, which shows the state during the vacuuming operation in which the press power transmission body 40 repeats vertically lowering and raising.

As shown, the top of the side wall 42 on the push power transmission 40 of the configuration including the top surface 41 and the side wall 42, the groove having a width corresponding to the thickness of the top surface of the cylinder 10, That is, the locking jaw C is formed.

3 and 4 are front and sectional views taken along line A-A of the push power transmission body constituting the vacuum pump according to the first embodiment of the present invention.

According to the figure, the press power transmission body 40 is comprised from the upper surface 41 as a disk body, and the side wall 42 extended vertically downward from this upper surface 41, This side wall 42 is It is characterized by being divided into a plurality of zones (four in the drawing) around the plurality of openings H.

It is preferable to compensate for the decrease in rigidity of the entire side wall due to the presence of the opening H by forming a force, ie, a rib 43, in the central portion of each zone of the side wall 42.

On the other hand, the reference numeral "w1" denotes the width of the rib 43, the reference numeral "w2" denotes the width of each zone on the side wall 42, and the reference numeral "d" denotes the hook formed at both upper ends of the opening H. The depth of the jaw C is shown, respectively.

5 and 6 are plan views and cross-sectional views taken along line B-B of the cylinder constituting the vacuum pump according to the first embodiment of the present invention.

According to the figure, the cylinder 10 has the inner cylinder 11 which forms the cylindrical space of the inner center upper-end part, and the outer cylinder 12 of the shape which shares the upper end surface with this inner cylinder 11, and encloses the inner cylinder 11. And a valve plate 13 attached to the side of the exhaust hole h1 formed through the inner cylinder 11 (hatched portion) to open and close it, and between the inner cylinder 11 and the outer cylinder 12. The upper surface is characterized in that a plurality of through holes (h3) is inserted into the vertical side wall 42 of the pressing power transmission body 40 of FIG.

As a valve related part structure including the shape of the valve plate 13 and the attachment method, various forms other than those shown are, of course, possible.

The through hole h3 is a hole into which the side wall 42 for each zone on the pressing power transmission body 40 is inserted, and of course, the through hole width W2 is also for each zone on the side wall 42. It has a dimension corresponding to the width w2.

On the other hand, the width W1 of the groove portion into which the rib 43 on FIG. 4 is inserted is characterized by having a dimension larger than the width w1 of the rib 43.

This is for the side wall 42 of each zone on the press power transmission body 40 to be slightly rotatable in the relative through hole h3, and the width W1 is preferably about three times the width w1. (The user can rotate the power transmission body 40 clockwise or counterclockwise by the width w1 according to the selection)

3, 4 and 5, the principle that the engaging, that is, interlocking between the cylinder 10 and the pressing power transmission body 40 via the locking jaw (C) as described above. When described as follows.

It is assumed that the vacuum pump of the embodiment of the present invention is to be stored after the completion of the vacuuming operation.

As the pressing power transmission body 40 is fully pushed down, the locking jaw C of FIG. 3 is placed at a position coinciding with the upper surface of the cylinder 10, and then the pressing power transmission body 40 is rotated clockwise ( Or counterclockwise) by the width w1, the left (or right) end of the through hole h3 on the cylinder 10 enters into the locking jaw C.

In consideration of such a mutual engagement process, it is most preferable that the depth d of the locking jaw C is equal to the width w1 of the rib 43.

When the push power transmission body 40 is rotated to the contrary, the locking state is released and at the same time, the push power transmission body 40 is vertically raised by the elastic force of the spring 60 as described above.

7 is a rear view of the lower movable body 20 constituting the vacuum pump of the embodiment of the present invention.

As shown, the lower end of the side wall 22 forms a horizontally extending shape, and a plurality of ribs 23 for rigid reinforcement are formed on the lower end of the extension part.

Reference numeral 24 denotes an annular positioning jaw 53 for positioning the upper end of the spring 60 on FIG. 1.

As shown in Fig. 8, the intake pipe 30 constituting the vacuum pump of the embodiment of the present invention includes a passage pipe 31 having a plurality of through holes h4 formed at the upper edge of the upper end portion thereof, and the inside of the passage pipe 31. The neck and its outer diameter are in close contact with each other, and include a blocking tube 32 formed with a through hole h5 in the center, and the above-described valve body is placed in the through hole h5 on the block tube 32.

In the case of the through hole (h4), but the upper end portion is shown in an open structure, a kind of groove shape, it may be a circular hole in order to supplement the strength of the passage pipe (31).

On the other hand, the internal air discharged from the sealed container is introduced into the cylindrical space on the cylinder described above through the through hole (h5) and the through hole (h4).

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 52 constituting the lowermost end of the vacuum pump is brought to an exhaust port (not shown) on the side of the sealed container to be evacuated, and then the pressing power transmission body 40 is pressed. (See arrow)

As the push power transmission body 40 and the lower movable body 20 in contact therewith are simultaneously lowered in the inner cylinder 11 on the tubular body 10, the cylindrical space above the lower movable body 20 expands and the negative pressure in the space is reduced. Is formed.

According to the principle that the gas flows from the high pressure space to the low pressure space, the low pressure space, that is, the cylindrical space above the lower movable body 20 while the air inside the high pressure space, that is, the airtight container-side sealed container side lifts the valve body 33. Flows into. (See arrow)

While the lowering of the lower movable body 20 is in progress, the valve plate 13 is pressed by atmospheric pressure to maintain the closed state.

Referring to FIG. 10, a process of returning to the original state by the spring force of the spring, that is, the process of finally evacuating the air from the vacuum pump to the air will be described.

When the user removes the pressing force against the pressing power transmission body 40, as the elastic restoring force of the spring 60 in the compressed state acts, the lower movable body 20 and the pressing power transmission body 40 are raised while the lower movable body ( 20) The upper cylindrical space is shrunk and at the same time the internal pressure thereof is higher than the internal pressure at the closed vessel side. (See arrow)

As a result, the valve body 33 closes the through hole h5 by the high pressure and the own weight from the cylindrical space above the lower movable body 20.

As the elastic force of the spring 6 continues to act, if the cylindrical space above the lower movable body 20 is reduced to a certain degree or less, the internal pressure thereof becomes higher than atmospheric pressure and at the same time the valve plate 13 at the upper end of the cylinder 10. Opening towards this atmosphere, the final exhaust of the internal air is achieved. (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.

Fig. 11 is a cross-sectional view showing the vacuum pump for the hermetic container of the second embodiment of the present invention, in which a spring support 54 is added to shorten the length of the spring 60 'to achieve more stable spring action.

The vacuum pump operating state as shown is the same as in the case of FIG. 10, and no further description of this embodiment is omitted in view of the fact that there are no structural features other than the spring bearing 54.

As mentioned above, although the vacuum pump for airtight containers of the Example of this invention was demonstrated in detail based on an accompanying drawing, various design changes within the range which does not deviate from the meaning of this invention are possible.

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

1 is a front sectional view of a vacuum pump for a sealed container according to a first embodiment of the present invention,

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

3 is a front view of a press power transmission constituting the vacuum pump of the first embodiment;

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a plan view of a cylinder constituting the vacuum pump of the first embodiment;

6 is a cross-sectional view taken along line B-B of FIG. 5;

7 is a rear view of the lower movable body constituting the vacuum pump of the first embodiment;

8 is a partial sectional view of an intake pipe constituting the vacuum pump of the first embodiment;

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

10 is a front sectional view of a vacuum pump showing a final exhaust process by the vacuum pump of the first embodiment;

11 is a front sectional view of a vacuum pump for a hermetically sealed container according to a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

      10: cylinder 11: inner cylinder

      12: outer cylinder 13: valve plate

      20: lower movable body 30: intake pipe

      31: passage pipe 33: valve body

      40: push power transmission member 50: lower support plate

      52: sealing tube 60: spring

Claims (7)

A cylindrical body having an open lower end portion having a cylindrical body 10 formed at an inner central upper end portion thereof, a lower movable body 20 coupled to a lower end of the cylindrical space at an inner central upper end portion thereof in a relatively movable state, and the lower movable member The inlet pipe 30 penetrates the center portion of the sieve 20 and the upper end portion thereof is coupled to the tube body 10, and extends vertically downward through the upper end portion of the tube body 10. A press-fitting power transmission body 40 in contact with a lower support 50 coupled with a lower end of the intake pipe 30 and a lower end of the cylinder 10, and positioned between the lower movable body 20 and the lower support 50. Vacuum pump for sealed container, characterized in that it comprises a spring (60). The method of claim 1, The cylinder 10 has an inner cylinder 11 forming a cylindrical space at an inner central upper end portion thereof, an outer cylinder 12 having a shape sharing a top surface with the inner cylinder 11 and surrounding the inner cylinder 11, and an inner cylinder ( 11 includes a valve plate 13 attached to the side of the exhaust hole h1 formed through the opening 11 to open and close the exhaust hole h1, and the push power transmission body 40 is provided at an upper end surface between the inner cylinder 11 and the outer cylinder 12. A vacuum pump for a closed container, characterized in that a plurality of through holes (h3) is formed is inserted into the vertical side wall (42) of. The method of claim 1, The lower movable body 20 includes a disk-shaped upper end surface 21 having a central through hole and a side wall 22 having a lower end portion bent outward from the upper end surface 21. And a groove for inserting the inner diameter seal member S1 in the central through-edge portion on the top surface 21, a groove for the outer diameter seal member S2 in the outer end portion of the upper surface 21, respectively, At the outer end of the (22), the vacuum pump for a sealed container, characterized in that an annular groove is formed in which the lower end of the pressing power transmission body 40 is engaged. The method of claim 1, The intake pipe 30 has a passage pipe 31 having a plurality of through holes h4 formed at the edge of the upper end thereof, and an outer diameter thereof closely attached to the inner diameter portion of the passage pipe 31, and a blocking hole having a through hole h5 formed at the center thereof. It comprises a pipe 32, the vacuum pump for a sealed container, characterized in that the valve body 33 is placed in the through hole (h5) on the blocking pipe (32). The method of claim 1, The push power transmission body 40 includes an upper surface 41 as a disk body and a side wall 42 extending vertically downward from the upper surface 41, the side wall 42 having a plurality of openings ( A vacuum pump for a closed container, characterized in that divided into a plurality of zones on the basis of H). The method of claim 1, The lower supporter 50 includes a support plate 51 as a disc body having a central hole and a sealing tube 52 inserted together in contact with the lower end of the intake pipe 30 in the central hole on the support plate 51. It is configured to include, the outer end of the support 51 is a vacuum pump for a sealed container, characterized in that a threaded portion for coupling with the cylinder (10) is formed. The method of claim 5, wherein A vacuum pump for a closed container, characterized in that the engaging groove (C) is formed on both side ends of the upper end of each opening (H) on the side wall (42).

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