TW474878B - A hand-held suction pump - Google Patents

Abstract

A hand-held suction pump for creating a vacuum in a container (2) provided with a suction valve (3), comprising an elongated outer casing in which an electric motor (7) and a piston pump (14, 15) driven by the motor (7) are accomodated, wherein the pump chamber (14) of the piston pump is connected by an inlet valve and a suction duct (28) to a hollow tip (34) at the free end of the casing for direct coupling with the suction valve of the container, the pump chamber being further connected by an outlet valve to an exhaust duct (29) having a duct opening on the outer surface of the wall of the outer casing for porting an exhaust flow to the exterior of the outer casing. In order to reduce noise caused by the exhaust flow, the duct opening of the exhaust duct (29) is overlapped by a baffle (38) which is separated by a gapped distance from the outer surface of the wall of the outer casing so as to deflect the exhaust flow exiting the duct opening by a substantial angle.

Description

474878 V. Description of the invention (1) The present invention relates to a hand-held suction pump for manufacturing a vacuum in a container having a suction valve, including an extended housing, an electric motor in the housing, and a A piston motor driven by an electric motor; where the suction chamber of the piston motor is connected to a hollow tip through a channel valve and a suction line, and the hollow tip is located at the free end of the housing and is directly connected to the container's The exhaust valve is connected, and the exhaust chamber is further connected to an exhaust pipe through an external valve. The exhaust pipe has a pipe opening on the outer surface of the shell wall to release the exhausted gas to the outside of the shell. The hand-held suction pump described above has been disclosed in European Patent No. 0 5 1 0 3 6 〇 A. This hand-held suction pump is very useful, especially for domestic use, for High vacuum is created in domestic containers of solid or liquid foods, so that food is kept in the absence or presence of air, especially in the absence of oxygen. Known hand-held pumping devices have been provided and meet the above requirements, but some further noise related to pumping must be improved. These noises are intermittent due to the need to pump off the device during operation. Caused by gas. In view of this, the present invention provides a hand-held pumping pump, which can reduce the noise generated when the gas is pumped out of the container when the gas is pumped out of the container. In order to achieve the above purpose, the present invention The pipe opening of the exhaust pipe overlaps with a baffle. The pipe opening is located on the outer surface of the pump casing wall, and there is a crack between the baffle and the outer surface of the casing wall.

474878 V. Description of the invention (2) The general distance, so that the discharged gas can deviate from a considerable angle before leaving the pipeline and being discharged into the surrounding air. By deviating the gas released from the exhaust opening of the exhaust pipe by a considerable angle, in order to properly reduce the noise generated by the air flow interrupted during the operation. The value of the deviation angle is mainly related to the shape and direction of the exhaust pipe, and the contour of the outer surface of the shell at the open end of the pipe is quite related to the shape and structure of the pipe opening. In most cases, the edge angle is 60 degrees to 120 degrees. If the exhaust pipe and the shaft corresponding to the exhaust pump casing extend roughly in a radial collision, and if the casing at the open end The extension direction of the outer surface of is parallel to the axis, and the value of the deviation angle is approximately 90 degrees. In addition, depending on the shape of the exhaust pipe and the outer surface of the casing, the angle of deviation may vary over a wide range. Therefore, the exhaust gas can be diverted by using a baffle mounted on the top of the outboard boat in the direction of the shaft center of the pump. In other cases, the direction of the deviation may be horizontal. In addition, it is also possible to provide air outlet cracks or openings on both sides of the baffle in the horizontal or axial direction, so as to simultaneously disperse a part of the gas in the opening of the pipe for exhausting the exhaust pipe. In the present invention, it is preferable to arrange an outlet between the baffle and the wall of the housing, so that the exhaust gas is directly discharged along the hollow tip of the free end of the housing in a direction almost parallel to the outline of the surface of the housing. In this method, the user can directly extract the existing gas during the process of operating the pumping device with one hand. In addition, the structure of the baffle plate and its connection to the shell can be freely selected according to the structure of the shell. In the present invention, it is preferable to use a sleeve connected to the shell.

Page 7 474878 V. Description of the invention (3) The wall of the cylinder forms a baffle plate. If the suction pump includes a replaceable top cover on the hollow tip of the free end of the casing, this baffle plate structure has special advantages. The top cover is connected by a movable sleeve, which can also serve as a baffle in the present invention. In order for your reviewing committee to understand the purpose, features and effects of the present invention, the following specific embodiments are described in conjunction with the accompanying drawings to explain the present invention in detail, as follows: Please refer to FIGS. 1 to 3 Figure, the reference number of the overall device of the suction pump provided according to the present invention is 1, the first figure shows the state where the suction pump 1 is set on the suction valve 3 of the container 2, A vacuum is created. Figure 2 shows an exploded view that is easier to see. The hand-held suction pump 1 includes an extended casing. A part of the casing is formed by fixing two substantially identical halves 4, 5 through screws 6. In the casing, The upper part is equipped with an electric motor 7, which can be started by pressing the switch 8 activated by the pivot key 9. In these illustrations, a part of the power line 10 is shown. This power line 10 is used to provide line power when the motor is driven by the line. Obviously, the pump can also be driven by a battery that can be recharged through line current. These diagrams also show three different colors of light-emitting diodes 11, which are determined by the load of the motor 7, and can provide a status signal showing the degree of vacuum in the container during the operation of the pump. Below the motor 7, there is a steel frame 13 for supporting, to support the cylinder 14 of the pump. 4. The speed is slowed down (to be described later), and it will move back and forth.

474878 V. Description of the invention (4) The moving action is transmitted to the piston 15. A pinion 17 is locked on the outer end of the shaft 16 of the motor 7. The pinion 17 can be combined with a leaf fan 18 to cool the motor. The pinion 17 is partly connected to a crown gear 1 9 The crown gear 19 is rotatably mounted on a shaft 20 supported by a steel frame. A hollow recess 3 7 of different center is provided inside the crown gear 19 to support the connecting rod 23. The free end of the connecting rod 23 is used to support the piston 15. In particular, the free end mentioned above has a spherical 40 shape, and is located in a hemispherical space 4 1 composed of two symmetrical cushions 4 2, and this position 41 is opposite to the piston. The pad 42 is fixed by a bushing 43 inserted above the pad, and a pad 44 is provided between the pad and the bushing. In the embodiments described in Figs. 1 to 3, the shaft 2 0 used as the axis of the crown gear 19 is perpendicular to the shaft 16 of the motor, and the unit of the piston-cylinder of the suction pump is relatively It is better to pair ¥ with the axis of the motor 7. Therefore, in Figure 3, the cylinder 4 can be tilted to 90 degrees relative to the motor axis 16 in a state perpendicular to the plane of the drawing page. Axis 20 is maintained in a fixed state. Below the cylinder 14, there is a valve body 24. This body 24 is separated from the cylinder 14 by a diaphragm valve 25. In fact, it is like an inlet valve and an outlet valve. There are two openings 2 6 and 27 at the bottom of the cylinder 1 4. They are connected to the exhaust pipe 2 8 through the diaphragm valve 25 and extend to the exhaust pipe of the valve. Road connected. As shown in Figure 3, the valve body 24, the diaphragm valve 25, and the cylinder 14 (which may also be combined with the steel strand structure 13 later) all pass through a tool

474878 V. Description of the invention (5) Threaded sleeves 30 are assembled together. The threaded sleeves are formed on a thread 3 1, and this thread 31 is formed on the lower half of the two shells 4 and 5 On the outer end. The outer pipe opening of the exhaust pipe 29 is overlapped by a seeding plate 38, which is separated by a crack distance between the target plate 38 and the housing wall, so that the extracted gas can be mixed with the surrounding air before Deviate the gas exhausted from the opening of the pipeline by a considerable angle. At this end, the inner wall where the sleeve overlaps the exhaust opening is in a recessed state, so that a distance like a crack is formed between the baffle plate 38 and the shell wall, and an exit located between the baffle plate and the shell wall is created. 39, whereby the extracted gas is led out from the axis of the shell to the hollow tip 34 parallel to the free end of the shell. In another embodiment not shown in the figure, the outward pipe opening of the exhaust pipe 29 may be moved upward by a considerable distance, thereby making the sleeve 30 shorter. The top cover 3 2 is fixed to the main body valve 24. The fixing method is, for example, a bayonet or a threaded joint, and a sleeve 31 which can be twist-locked is inserted therein. The top cover is preferably made of a transparent material, and has an internal space 3 3 that can accommodate a pressed tip 3 4. The tip 3 4 is made of a flexible material, such as rubber. This tip will engage the suction valve 3 located on the container 2. In the embodiment shown in the figure, the tip 34 and the corresponding space on the suction valve 3 have complementary chamfers. The space 33 in the top cover 32 has a sturdy end 35. As shown in the exploded view in Figure 2, during the pump operation, the space 3 3 and the opening 3 6 are forcibly evacuated from the container 2 air. Passes through the space 3 3 and the opening 3 6. In this way, there may be any condensate on the top cover 32, and the cover is removed

Page 10 474878 V. Description of the invention (6) The pump is discharged immediately after pumping. The transparent top cover 3 2 can be used to check the status of the compression of the top cover. In addition, the light-emitting diode 11 can also be used to display the degree of vacuum. A mechanical indicator including a cylinder 45 can be used, and the cylinder 45 is connected to the suction tip 3 4 and is therefore connected to the pumped tip. The vacuum container 2 is connected to the suction nozzle 3 4 through a pipe (not shown) located on the side wall of the main valve 2 4. The piston 46 and its packing 47 are placed inside the cylindrical body 45 and are subjected to upward pressure from the spring 48. When the suction pump is operated, the vacuum state of the container 2 will suck the piston 46 down, just opposite to the upward pressure of the spring 48. The position of the spring 48 can be seen through the transparent cylinder 45, or it can be seen through the two An opening 49 between the half edges 4 and 5 is provided for viewing, thereby providing an index for judging the degree of vacuum. The operation of the hand-held suction pump of the present invention is described as follows: Hold the suction pump with one hand, as shown in Figure 1 (or the index finger of the other hand can be used to activate the switch), and Place the suction pump directly on the container 2 to be evacuated, insert its tip 34 into the position of the container 2 corresponding to the suction valve 3, press the center button 9 to start the motor 7, and rotate the cylindrical pinion 17, the pinion 17 will drive the rotation of the crown gear 19, and the connecting rod 23-the piston 15 is repeatedly moved through the recesses 37 at different centers. During the upward movement of the piston, it is equivalent to the suction state. The air will be evacuated from the container through the opening 36. If any condensate and solid particles are left, it will be left in the top cover. The evacuated air will Enter the space in the cylinder, through the line 28 of the main valve 24, through the diaphragm valve 25, and then through the bottom of the cylinder

Page 11 474878 V. Opening 2 6 of the description of invention (7). In this case, the opening 2 7 at the bottom of the cylinder will be closed by the diaphragm valve 2 5. During the downward movement of the piston, the diaphragm valve closes the opening 2 6 and opens the opening 2 7 of the bottom 14 of the cylinder, thereby allowing the air stored in the cylinder to pass through the pipe 29 located inside the main valve 24. Drain. Therefore, the exhaust gas is deflected by the baffle 38 by an angle of about 90 degrees, and the noise caused by the exhaust gas is reduced. To further reduce noise, a standard sponge filter (not shown) can also be plugged into the exhaust line 29. When the vacuum in the container 2 increases, the load of the motor 7 will increase accordingly. This increase can be sensed by observing the electronic circuit, and the user can be informed of the container by selectively emitting light-emitting diodes. The degree of vacuum in. In the case of using a mechanical indicator, the user can tell the user the degree of vacuum of the container through the position of the piston 46, and its movement will increase as the vacuum in the container increases. When the above-mentioned elements are perfectly aligned, the transmission system between the motor and the suction horse of the present invention works particularly well, but it can also be operated at a 45-degree tilt according to convenience. Even though a fixed-shaped container is shown in FIG. 1, it is obvious that the suction pump provided by the present invention can be used on any type of container, such as a flexible container, as long as it has a tip 3 4 valve, the tip 34 has a suitable square section, but it can also be replaced with a section between different sections, such as a pyramid. In Figs. 5 and 6, another possible embodiment of the present invention is shown. The gear 17 is replaced by a thread, and its reference numeral is also 17. This thread position

Page 12 474878 V. Description of the invention (8) At the turning point corresponding to the rod 23, the rod 23 is used to drive a crown gear 19 with an appropriate contour. According to this embodiment, a battery 50 for supplying electric power is provided, which overlaps with one end of the suction pump; the battery 5 1 may also be used, and a socket for charging the battery may be used to provide power through line current. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the scope of this & Ming implementation. Any person skilled in the art can make various changes without departing from the spirit and scope of the present invention. And retouching, that is, all equal changes and modifications made in accordance with the present invention shall be covered by the scope of the patent for the invention, and the definition shall be based on the scope of the patent application.

Page 474878 Brief description of the diagram. Figure 1 shows a device for generating a vacuum in a container with a suction valve according to a preferred embodiment of the present invention; Fig. 1 shows the exploded device of the pump according to the preferred embodiment; Fig. 3 shows the middle section of the pump of the invention; Fig. 4 shows the other section of the pump Figure 5 shows a side view of another embodiment of the suction pump shown in the previous figure with a change in appearance; Figure 6 shows a middle sectional view of another embodiment of the suction pump of the present invention . Brief description of drawing number: 3 suction valve 6 screw 9 rotary shaft recording key 1 0 power cord 1 3 supporting steel frame 2 container 4 and 5 half of the same 7 electric motor 8 pressing switch 1 1 light emitting diode 14 cylinder 1 6 axis 1 8 leaf fan 2 0 shaft 24 main valve 2 6, 2 7 opening 2 9 exhaust line 1 5 piston 1 7 pinion 1 9 crown gear 2 3 connecting rod 2 5 diaphragm valve 2 8 suction line 30 sleeve

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Claims (1)

/ 、、 Scope of patent application In the empty room of the drive, the air exhaust plate circuit is as follows: 3. As medium, empty 4. As medium — I — 5 • As two types of hand-held exhaust pumps, it is suitable for use in a container (2) with an exhaust valve (3) ) Generates a vacuum state, including an extended M housing containing an electric motor, and a piston motor (1, 4, 5) driven by the electric horse (7, 4); wherein the piston motor (1 pumping The chamber is connected to the tip (34) of a core * through a channel valve and an exhaust line (28), and the hollow tip is located at the outer end of the shell-directly connected to the exhaust valve of the container. Then, the pump is further connected to an exhaust pipe (29) through an external valve, and the exhaust pipe has a pipe opening on the outer surface of the wall of the casing for the gas released to the outside of the casing; Among them, the pipe opening of the row of pipes (2 9) will overlap with a baffle plate (3 8), and the joint system is separated from the wall of the casing by a distance of cracks, so as to separate the gas from the opening. Equivalent angle. The angle of the hand-held pump as described in item 1 of the scope of patent application is equivalent to 90 degrees. The hand-held pumping pump described in item 1 or 2 of the scope of patent application in China. An outlet (39) is located at the door of the baffle plate (38) and the casing wall, so that the extracted gas can be removed from the casing. The center of the shaft is derived in a direction parallel to the tip (34) of the housing. The hand-held suction pump described in item ⑷ of the scope of application, the part Γ: (.38) is connected to the housing by a sleeve The hand-held suction pump described in item 3 of the scope of patent application of the cylinder (3.), the baffle plate (3 8) uses a sleeve (30), 474878 Page 17