CN112601891A

CN112601891A - Pump and method of operating the same

Info

Publication number: CN112601891A
Application number: CN201980055191.2A
Authority: CN
Inventors: 宫里义章; D.K.朴; Y.K.金
Original assignee: Shengxing Co ltd; Bizser Co Ltd
Current assignee: Shengxing Co ltd; Bizser Co Ltd
Priority date: 2018-08-24
Filing date: 2019-08-20
Publication date: 2021-04-02
Also published as: US20210190054A1; JP2020029855A; WO2020040146A1

Abstract

The invention provides a pump which utilizes the linear reciprocating motion of a driving part and utilizes the compression and vacuum of a compression chamber to send out fluid through a pipeline, and the pump is a low-noise product and has excellent energy conversion efficiency. The pump has: the suction port (41) for sucking fluid, a compression chamber (99) for compressing the sucked fluid, and a delivery port (42) for delivering the compressed fluid, wherein the suction port comprises: a drive source (10) having a rotating shaft (50); a rotating part (70) having a central part connected to the rotating shaft and at least one pair of rotating-side magnet groups having different magnetic poles arranged in the circumferential direction; and a driving unit (80) having at least one pair of linear motion side magnet groups having different magnetic poles and disposed so as to correspond to the at least one pair of magnet groups of the rotating unit, wherein the driving unit is attached so as to be able to move closer to or away from the rotating unit by an attractive force or a repulsive force of the rotating side magnet group and the linear motion side magnet group that are displaced in accordance with rotation of the rotating unit, and is able to linearly reciprocate in the compression chamber.

Description

Pump and method of operating the same

Technical Field

The present invention relates to a pump that compresses a fluid sucked into a compression chamber and discharges the fluid from a discharge port.

Background

Conventionally, various types of pumps for compressing fluid are known, and for example, a reciprocating pump described in patent document 1 is known. As shown in fig. 17, the pump driving device includes: a cylinder (110) of a certain size; upper and lower cylinder heads (120, 120 ') which are coupled to and hermetically shut off upper and lower sections of the pump cylinder (110), and on both sides of which suction valves (121, 121 ') and discharge valves (122, 122 ') are formed, respectively; a pump piston (130) which is provided inside the pump cylinder (110), has a long hole (131) formed through the center thereof, and has rack and pinion gears (132, 132') formed so as to protrude from the center line of the right and left vertical surfaces of the long hole (131); a drive motor (not shown) coupled to the center of one side of the outer surface of the pump cylinder (110), the rotary shaft (141) of which is positioned on the center line of the long hole (131) of the pump piston (130); and a pinion gear (150) coupled to a rotation shaft (141) of the driving motor, wherein teeth (152) of the gear, which are engaged with the rack gears (132, 132 ') and rotate, are formed on the gear body (151) to protrude within a predetermined angle, wherein a rotating cam (153) is coupled to the rotation shaft of the pinion gear (150), and a predetermined rotating space (133) is formed on one side of the rack gears (132, 132 ') of the pump piston (130) corresponding to the rotating cam (153), and wherein the pump piston (130) is forced to move a predetermined distance in the vertical direction by contacting the upper and lower ends of the rotating space (133) when the rotating cam (153) rotates, in order to smoothly operate the rack gears (132, 132 ') and the pinion gear (150).

Further, pressure buffer chambers (123, 123 ') having a predetermined space are formed outside the intake valves (121, 121 ') and the delivery valves (122, 122 '), and springs (160, 160 ') having a predetermined elastic force are disposed between the upper and lower cylinder heads (120, 120 ') and the end portions of the pump piston (130) on both sides.

Documents of the prior art

Patent document

Patent document 1: korean registration patent No. 10-0781391

Problems to be solved by the invention

In the reciprocating pump using the driving motor configured in this way, the rotating cam (153) is contacted with the upper end and the lower end of the rotating space (133), so that the noise generated by the gear rack (132, 132') and the rotating cam (153) is large.

Various methods have been proposed for preventing such noise, but there is a problem that the reciprocating pump cannot be downsized because a separate sound insulating material is used to reduce the noise of the reciprocating pump using the driving motor.

In addition, in the reciprocating pump using the driving motor, the piston reciprocates up and down through the gear rack (132, 132'), the pinion (150) and the rotating cam (153), but there is a problem of durability of the gear.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a pump which delivers a fluid through a pipe by linear reciprocation of a driving part and compression and vacuum of a compression chamber, and which has low noise and excellent energy conversion efficiency.

Another object of the present invention is to provide a high output pump capable of forming a high pressure in a compression chamber while increasing the amount of sucked fluid to be delivered with the same energy.

Another object of the present invention is to provide a high capacity pump that can deliver a large amount of sucked fluid with a size of a product.

Another object of the present invention is to provide a pump having low noise and excellent durability, in which an oil-free bush having a friction surface of a driving portion minimized at the center is reversibly driven smoothly.

Means for solving the problems

The pump of the present invention comprises: a suction port for sucking a fluid, a compression chamber for compressing the sucked fluid, and a discharge port for discharging the compressed fluid, the fluid compressor comprising: a drive source having a rotary shaft; a rotating part, the central part of which is connected with the rotating shaft and at least one pair of rotating side magnet groups with different magnetic poles are arranged in the circumferential direction; and a driving unit including at least one pair of linear motion side magnet groups having different magnetic poles and disposed to correspond to the at least one pair of magnet groups of the rotating unit, wherein the driving unit is attached to be able to approach or separate from the rotating unit by an attractive force or a repulsive force of the rotating side magnet group and the linear motion side magnet group that are displaced according to rotation of the rotating unit, and is able to linearly reciprocate in the compression chamber.

Further, the pump of the present invention preferably includes: a housing cover in which the suction port and the delivery port are formed; a wheel housing (wheel housing) that houses the rotating portion and the driving portion; and a housing that holds the rotary shaft rotatably and fixes the drive source.

In the pump of the present invention, it is preferable that the housing cover and the wheel housing are fixed via a fixing step of a drive film.

In the pump of the present invention, it is preferable that the compression chamber is partitioned by at least the housing cover and the drive film.

The summary of the invention does not list all features necessary for the invention, and sub-combinations of these feature groups may also become inventions.

Effects of the invention

The pump of the present invention drives the driving part by using the attractive force and repulsive force of the magnet, thereby reducing direct friction of parts, reducing noise and abrasion, improving durability, obtaining stronger attractive force and repulsive force of the magnet in the orthogonal direction, generating stronger energy than the rotating force to drive the driving part to reciprocate linearly, obtaining high-efficiency energy, driving the driving part by the displacement of the magnet, having excellent sealing force of the compression chamber, and providing a high-output pump which can deliver stronger energy than the required energy and a high-efficiency pump which has a smaller size than the delivered amount.

Drawings

Fig. 1 is a sectional view schematically showing the pump of the present invention arranged.

Fig. 2 is a perspective view showing a motor and a part of constituent parts of a housing of the pump of the present invention partially combined together.

Fig. 3 is a perspective view showing a pump of the present invention in which a housing, a thrust bearing, and a part of constituent parts into which a rotating shaft is inserted are partially combined.

Fig. 4 is a perspective view showing a pump according to the present invention in which a part of the components of the thrust bearing is inserted into the rotary shaft, and the thrust bearing is enlarged.

Fig. 5 is a perspective view showing a part of the constituent parts of the combined housing and wheel housing of the pump of the present invention in an enlarged manner.

Fig. 6 is a perspective view showing a part of the constituent elements of the pump of the present invention, with keys coupled to the rotary shaft and the rotary plate, in an enlarged scale.

Fig. 7 is a perspective view showing a pump according to the present invention in an enlarged manner, with a rotating plate fixed to a part of a rotating shaft by a fixing nut.

Fig. 8 is a perspective view showing a pump according to the present invention in which a part of components of the pump, in which a magnet is inserted into a rotating plate, is removed and enlarged.

Fig. 9 is a perspective view showing a pump according to the present invention, with a part of the components of the drive film attached and assembled to the wheel housing, in an enlarged manner.

Fig. 10 is a perspective view showing a pump according to the present invention in which a magnet is inserted into a rotating plate and a part of the components of the pump combined with a rotating part is removed and enlarged.

Fig. 11 is a perspective view showing a pump according to the present invention in which a magnet is inserted into a drive film and a part of constituent parts of the pump is combined with a drive unit in an enlarged manner.

Fig. 12 is a cross-sectional view showing a part of the components of the pump of the present invention in a vacuum state, in an enlarged manner.

Fig. 13 is an enlarged sectional view of a part of components of the pump according to the present invention in a state where the compression chamber is compressed.

Fig. 14 is a perspective view of the pump of the present invention.

Fig. 15 is an enlarged perspective view of the pump of the present invention with the magnet removed.

Fig. 16 is a perspective view of the pump of the present invention with the housing cover removed and shown enlarged.

Fig. 17 is a schematic block diagram of a prior art reciprocating pump.

Detailed Description

The following describes preferred embodiments for carrying out the present invention with reference to the drawings. The following embodiments are not limited to the inventions of the claims, and all combinations of features described in the embodiments are not essential to the solution of the invention.

Fig. 1 is a sectional view schematically showing arrangement of a part of components of a pump including a motor 10 as a driving source, a housing 20, a wheel housing 30, a housing cover 40,

thrust bearings

52 and 53, a fixing pin 51, a rotating plate 60, a rotating part 70, a driving part 80, a driving film 90, and check valves 43 and 44, fig. 2 is a perspective view showing a shape in which a part of components of the motor 10 and the housing 20 are fixedly coupled together and enlarged, fig. 3 is a perspective view showing a form in which a rotating shaft 50 is inserted into a motor shaft 11, a part of components of the fixing pin 51 is inserted into a pin hole 12 of the motor shaft and a pin hole 55 of the rotating shaft and enlarged, fig. 4 is a perspective view showing a part of components of the

thrust bearings

52 and 53 coupled to the rotating shaft 50 and enlarged, and fig. 5 is a perspective view showing a part of the housing 20 and the wheel housing 30 (not shown) coupled together and a part of the key 34 is inserted into a key part 19 of the rotating shaft 50 Fig. 6 is a perspective view showing the rotary shaft and the rotary plate in an enlarged manner by inserting the key 34 into the key 19 of the rotary shaft 50 and the key 69 of the rotary plate 60, and by picking up and freezing the rotary shaft and the rotary plate and forming a part of the constituent parts of the

screw portions

64 and 65 of the fixing nut so as to fix the rotary portion 70 on the rotary plate, and by enlarging the same, fig. 7 is a perspective view showing a part of the constituent parts by picking up and enlarging the rotary shaft 50 and the rotary plate 60 so as to be coupled with and separated from the fixing nut 13, and by separating or not separating the same, fig. 8 is a perspective view showing a part of the constituent parts by picking up and enlarging the same on the rotary plate 60 and by inserting the

magnets

67 and 68 constituting the rotary-side magnet group, and fig. 9 is a perspective view showing a part of the constituent parts by picking up and enlarging the fixing step 91 of the driving film 90 on the fixing portion 39 of the wheel housing 30, fig. 10 is a perspective view showing a part of components which are coupled to the rotating plate 60 by inserting

magnets

67 and 68 into the rotating plate 60 so as to correspond magnetically to each other and are formed at the center thereof with a circular step 66, circular portions 61 and 71, and a key portion 69 so as to be fixedly coupled to the rotating shaft 50 while securing a certain space and to be separated or to smoothly rotate without separating from the rotating shaft, and enlarged, fig. 11 is a perspective view showing a part of components which are coupled to the driving portion 80 and screw portions 84 and 85 by inserting magnets 87 and 88 constituting a linear movement side magnet group into the driving film 90 so as to correspond to each other and are fastened to the driving portion 80 and the screw portions 84 and 85 by screws 17 and 18, and a part of components in a state where an oilless bush 92 is coupled to the center 81, and fig. 16 is a perspective view showing a part of a shape of the case cover 40 in which a fixed step (not shown) and a certain section are extracted and enlarged, the case cover 40 is a case cover having a circular shape with a lower section opened, a fixing portion 49 for fixing a fixing step 91 is formed on the opened circular outer peripheral surface, and a cylindrical shape with

openings

41 and 42 at both ends of the upper section side surface.

As will be described in more detail with reference to the drawings, the pump according to the present embodiment is a pump in which the drive film 90 is driven in the direction of the rotor 70 by the attractive force of the magnets of the rotor 70 and the drive unit 80, the compression chamber 99 is brought into a vacuum state, and the fluid is sucked into the suction port 41, as shown in fig. 12, the drive film 90 is driven in the direction away from the rotor 70 by the repulsive force of the magnets of the rotor 70 and the drive unit 80, the compression chamber 99 is brought into a compression state, and the fluid in the compression chamber 99 is discharged from the discharge port 42, as shown in fig. 13. The compression chamber 99 is defined by the housing cover 40, the drive film 90, and the wheel housing 30, which will be described later.

To explain in more detail with reference to the drawings, as shown in fig. 2, a fixing portion (not shown) of the motor 10 and fixing

portions

22 and 23 of the housing 20 are fastened and fixed by screws (not shown).

As shown in fig. 3, the thrust bearing 52 is inserted into the bearing holder 21 attached to the housing 20 so that the axial load can be applied to the rotary shaft 50, the motor shaft 11 is inserted into the rotary shaft 50, and the fixing pin 51 is inserted into and coupled to the pin hole 12 of the motor 10, the pin hole 55 of the rotary shaft, and the pin hole 54 of the thrust bearing. Further, as shown in fig. 4, the thrust bearing 53 is inserted into the rotary shaft 50, and as shown in fig. 5, the thrust bearing 53 is attached to the bearing holder 31, and the housing 20 and the wheel housing 30 are fixed (not shown) to each other.

As shown in fig. 5, the key 34 is inserted into the key portion 19 of the rotary shaft 50, as shown in fig. 6, into the key portion 69 of the rotary plate 60, and the rotary shaft and the rotary plate are coupled, and as shown in fig. 7, the fixing nut 13 is coupled to the screw portion of the rotary shaft, and the rotary shaft 50 and the rotary plate 60 are coupled and separated or not separated, and are assembled to be smoothly rotatable.

The structure of the rotating shaft and the rotating plate of the motor used in the pump of the present embodiment is preferably formed separately and assembled to each other, but the rotating shaft and the rotating plate may be formed integrally.

As shown in fig. 8, in the pump of the present embodiment,

magnets

67 and 68 are inserted into

magnet grooves

62 and 63 of a rotating plate 60 in a magnetically corresponding manner and coupled to a rotating portion (not shown). As shown in fig. 9, the fixing step 91 of the driving film 90 is coupled to the fixing portion 39 of the wheel housing 30.

The drive membrane of the pump of the present embodiment is preferably configured to be separated from the wheel housing and to be attached to the fixing portion, but the drive membrane may be configured to be integrated with the wheel housing, or may be configured to be fixed by a fixing method in another form.

As shown in fig. 10, in the pump of the present embodiment,

magnets

67 and 68 are inserted into

magnet portions

62 and 63 of the rotating plate 60 and magnet portions 72 and 73 of the rotating portion 70 so as to magnetically correspond to each other, and are fastened to screw

portions

64 and 65 of the rotating plate and screw

portions

74 and 75 of the rotating portion by screws 15 and 16, and a circular step 66, circular portions 61 and 71, and a key portion 69 are formed at the center so as to be coupled to the rotating shaft 50 and arranged in the wheel housing so as to be smoothly rotatable and so as to be separable or non-separable from each other in the wheel housing so as to be reversibly rotatable.

As shown in fig. 11, in the pump of the present embodiment, magnets 87 and 88 are disposed on a drive film 90 so as to correspond magnetically to each other, magnet portions 82 and 83 of a drive portion 80 are inserted, screw portions (not shown) of the drive film 90 and screw portions 84 and 85 of the drive portion 80 are fastened and coupled to each other with screws 17 and 18, a fixing nut 13 is inserted into a center 81, and an oilless bush 92 is inserted so as to be rotatable reversibly. As shown in fig. 15, it is preferable that the

magnets

67 and 68 constituting the rotation-side magnet group and the magnets 87 and 88 constituting the translation-side magnet group are formed in a substantially cylindrical shape and have S poles or N poles at both ends in the axial direction.

As shown in fig. 12, in the pump of the present embodiment, when the motor shaft 11 of the motor 10 and the rotary shaft 50 rotate, the rotating plate 60 and the rotating portion 70 rotate, and when the

magnets

67 and 68 of the rotating portion and the magnets 87 and 88 of the driving portion 80 are respectively positioned on the same line with different polarities, an attractive force is generated between the

magnets

67 and 68 and the magnets 87 and 88, and the driving portion 80 and the driving film 90 move in a direction approaching the rotating portion 70.

The wings (not shown) of the driving film 90 of the pump of the present embodiment are made of a soft mixed material or an elastic material, are controlled to be driven within a certain interval, and are configured to maintain a certain distance between the driving part 80 and the rotating part 70 even when the driving film 90 is closest to the rotating part 70 so that the driving part and the rotating part do not abut.

At this time, since the sealed compression chamber 99 is in a vacuum state by driving the film 90, the fluid is sucked into the compression chamber 99 through the suction port by the one check valve 44 which closes the flow path and the other check valve 43 which opens the flow path so that the fluid is sucked into the suction port 41.

As shown in fig. 13, in the pump of the present embodiment, if the motor shaft 11 and the rotary shaft of the motor 10 rotate, the rotating plate 60 and the rotating portion 70 rotate, the

magnets

67 and 68 of the rotating portion and the magnets 87 and 88 of the driving portion 80 are respectively positioned on the same line so as to have the same polarity, a repulsive force is generated between the

magnets

67 and 68 and the magnets 87 and 88, and the driving portion 80 and the driving film 90 linearly move in the compression chamber in the direction of the compression chamber 99.

At this time, since the sealed compression chamber 99 is compressed by the movement of the driving film, the compressed fluid is sent out through the outlet 42 by the one check valve 43 that closes the flow path and the other check valve 44 that opens the flow path so that the fluid in the compression chamber is sent out to the outlet 42.

Therefore, as shown in fig. 12, when the compression chamber 99 is in the vacuum state, the check valve 44 of the delivery port 42 is closed, the check valve 43 of the suction port 41 is opened, and the fluid is sucked into the suction port, and as shown in fig. 13, when the compression chamber 99 is in the compression state, the check valve 43 of the suction port 41 is closed, the check valve 44 of the delivery port 42 is opened, and the fluid is delivered to the delivery port.

Therefore, the pump of the present embodiment is driven by repeating the operations of fig. 12 and 13, and can realize continuous suction and discharge of the fluid.

As shown in fig. 4, in the pump of the present embodiment, the

thrust bearings

52 and 53 are preferably configured to be able to receive axial force, but may be configured by other types of bearings instead of or in addition to being eliminated.

As shown in fig. 3, in the pump of the present embodiment, the rotary shaft 50 may be deformed into a shape not shown, or may be configured instead of another power transmission device.

As shown in fig. 10, in the pump of the present embodiment, the rotating plate 60 and the rotating portion 70 are preferably configured separately and coupled to each other, but may be configured integrally. As shown in fig. 11, the driving film 90 and the driving portion 80 are preferably configured separately and coupled to each other, but may be configured integrally.

As shown in fig. 11, in the pump of the present embodiment, the material of the drive membrane 90 is preferably made of a soft or elastic material, but may be formed by deforming into a cylinder. Further, since the outer peripheral surface of the driving portion 80 and the inner peripheral surface 33 of the wheel housing 30 do not rub against each other, a pump with low noise and excellent durability can be provided, and the driving of the driving portion is driven only by the displacement of the magnet, a high-efficiency pump can be provided. The technical scope of the present invention also includes the modifications and improvements, which are obvious from the description of the claims.

Description of the symbols

10 Motor (Driving source)

20 casing

30 wheel casing

40 casing cover

41 suction inlet

42 outlet

50 rotating shaft

60 rotating plate

67. 68 magnet (rotating side magnet group)

70 rotating part

80 drive part

87. 88 magnet (direct-acting side magnet group)

90 drive membrane

99 compression chamber

Claims

1. A pump, having: a suction port for sucking a fluid, a compression chamber for compressing the sucked fluid, and a discharge port for discharging the compressed fluid, the fluid compressor comprising:

a drive source having a rotary shaft;

a rotating part, the central part of which is connected with the rotating shaft and at least one pair of rotating side magnet groups with different magnetic poles are arranged in the circumferential direction;

a drive unit including at least one pair of linear motion side magnet groups having different magnetic poles and arranged to correspond to the at least one pair of magnet groups of the rotating unit,

the driving unit is mounted so as to be movable toward and away from the rotating unit by an attractive force or a repulsive force of the rotating-side magnet group and the linear-motion-side magnet group, which are displaced according to the rotation of the rotating unit, and to be linearly reciprocated in the compression chamber.

2. The pump according to claim 1, comprising:

a housing cover in which the suction port and the delivery port are formed;

a wheel housing that houses the rotating portion and the driving portion;

and a housing that holds the rotary shaft rotatably and fixes the drive source.

3. The pump of claim 2,

the housing cover and the wheel housing are fixed via a fixing step of a driving film.

4. The pump of claim 3,

the compression chamber is divided by at least the housing cover and the driving film.