U.S. patent application number 17/269303 was filed with the patent office on 2021-06-24 for pump.
This patent application is currently assigned to Yoshiaki MIYAZATO. The applicant listed for this patent is THE BIZSER CO., LTD, Yoshiaki MIYAZATO, WINSTAR DEVELOPMENT GROUP. Invention is credited to Young Kwon KIM, Yoshiaki MIYAZATO, Dae Ki PARK.
Application Number | 20210190054 17/269303 |
Document ID | / |
Family ID | 1000005445199 |
Filed Date | 2021-06-24 |
United States Patent
Application |
20210190054 |
Kind Code |
A1 |
MIYAZATO; Yoshiaki ; et
al. |
June 24, 2021 |
PUMP
Abstract
A pump in which fluid is fed out through piping by compression
and vacuum in a compression chamber due to linear reciprocating
motion of a drive part, so as to provide a low-noise product and an
energy-efficient pump. The pump has a suction port, compression
chamber, outlet port, drive source having a rotating shaft; a
rotating part having a central portion connected to the rotating
shaft and having at least one pair of rotating-side magnets of
different magnetic poles arranged in a circumferential direction;
and a drive part including a pair of linear-motion-side magnets of
different magnetic poles wherein the pair of linear-motion-side
magnets is arranged so as to correspond to the pair of magnets, and
the drive part is mounted to be able to move towards or away from
the rotating part and able to perform linear reciprocating motion
within the compression chamber by suction force or repulsive force
between the rotating-side magnets and the liner-motion-side
magnets.
Inventors: |
MIYAZATO; Yoshiaki;
(Chiyoda-ku, Tokyo, JP) ; PARK; Dae Ki;
(Chiyoda-ku, Tokyo, JP) ; KIM; Young Kwon;
(Chiyoda-ku, Tokyo, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
MIYAZATO; Yoshiaki
WINSTAR DEVELOPMENT GROUP
THE BIZSER CO., LTD |
Tokyo
Tokyo
Tokyo |
|
JP
JP
JP |
|
|
Assignee: |
MIYAZATO; Yoshiaki
Chiyoda-ku, Tokyo
JP
WINSTAR DEVELOPMENT GROUP
Tokyo
JP
THE BIZSER CO., LTD
Tokyo
JP
|
Family ID: |
1000005445199 |
Appl. No.: |
17/269303 |
Filed: |
August 20, 2019 |
PCT Filed: |
August 20, 2019 |
PCT NO: |
PCT/JP2019/032467 |
371 Date: |
February 18, 2021 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04B 27/1081 20130101;
F04B 27/1063 20130101; F04B 45/047 20130101 |
International
Class: |
F04B 27/10 20060101
F04B027/10; F04B 45/047 20060101 F04B045/047 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 24, 2018 |
JP |
2018-157730 |
Claims
1. A pump having a suction port for sucking a fluid, a compression
chamber for compressing the sucked fluid, and an outlet port for
feeding out the compressed fluid, the pump comprising: a drive
source having a rotating shaft; a rotating part having a central
portion connected to the rotating shaft and having at least one
pair of rotating-side magnets of different magnetic poles arranged
in a circumferential direction; and a drive part including at least
one pair of linear-motion-side magnets of different magnetic poles
wherein the at least one pair of linear-motion-side magnets is
arranged so as to correspond to the at least one pair of magnets of
the rotating part, wherein the drive part is mounted to be able to
move close to or away from the rotating part and able to perform
linear reciprocating motion within the compression chamber by
suction force or repulsive force between the rotating-side magnets
and the liner-motion-side magnets that is displaced by rotation of
the rotating part.
2. The pump according to claim 1, comprising: a housing head in
which the suction port and the outlet port are formed; a wheel
housing that houses the rotating part and the drive part; and a
housing that rotatably holds the rotating shaft and fixes the drive
source.
3. The pump according to claim 2, wherein the housing head and the
wheel housing are fixed via a fixing step of a drive membrane.
4. The pump according to claim 3, wherein the compression chamber
is defined by at least the housing head and the drive membrane.
Description
TECHNICAL FIELD
[0001] The present invention relates to a pump for compressing a
sucked fluid in a compression chamber and delivering the compressed
fluid from an outlet port.
BACKGROUND ART
[0002] Conventionally, various types of pumps for compressing fluid
have been known, for example, a reciprocating pump described in
Patent Document 1 is known. As shown in FIG. 17, a drive of this
pump includes: a cylindrical pump cylinder (110) of a certain size;
upper and lower cylinder heads (120, 120') that are coupled to
upper and lower stages of the pump cylinder 110 in a hermetically
sealed manner and have suction valves (121, 121') and delivery
valves (122, 122') formed on both sides respectively; a pump piston
(130) that is installed inside the pump cylinder (110), has a long
hole (131) formed in the center therethrough, and has rack gears
(132, 132') formed to protrude on the centerlines of left and right
vertical planes of the long hole (131); a drive motor (not shown)
that is coupled to the center of one side of the outer surface of
the pump cylinder (110) and has a rotating shaft (141) positioned
on the centerline of the long hole (131) of the pump piston (130);
and a pinion gear (150) that has teeth (152) of a toothed gear
formed to protrude within a certain angle on a gear body (151)
wherein the gear is coupled to the rotating shaft (141) of the
drive motor to be engaged and rotated with the rack gears (132,
132'). In this configuration, a rotating cam (153) is coupled to a
rotating shaft of the pinion gear (150), and a certain 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);
however, for smooth operation of the rack gears (132, 132') and the
pinion gear (150), the pump piston (130) is forcibly moved up and
down a certain distance in contact with upper and lower ends of the
rotating space (133) when the rotating cam (153) is rotated.
[0003] Further, pressure buffer chambers (123, 123') having certain
space are formed outside the suction valves (121, 121') and the
delivery valves (122, 122'), and springs (160, 160') with constant
elastic force are disposed between the upper and lower cylinder
heads (120, 120') and corresponding ends of the pump piston (130),
respectively.
CITATION LIST
Patent Literature
[0004] Patent Literature 1: Korean Patent No. 10-0781391
SUMMARY OF INVENTION
Technical Problem
[0005] In the reciprocating pump employing the drive motor
configured as described above, since the rotating cam (153)
contacts the upper and lower ends of the rotating space (133), a
problem is that noise that can be generated by the rack gears (132,
132') and the rotating cam (153) is large.
[0006] Although various forms of devices for preventing such noise
can be considered, another problem is that it is impossible to
reduce the size of the reciprocating pump when an additional
soundproofing member is used to reduce the noise of the
reciprocating pump employing the drive motor.
[0007] Further, in the reciprocating pump employing this drive
motor, while the piston is reciprocated up and down by the rack
gears (132, 132'), the pinion gear (150), and the rotating cam
(153), there is a concern that this may cause a problem in gear
durability.
[0008] An object of the present invention, which has been made in
view of the above described problems, is to provide a pump in which
fluid is fed out through piping by compression and vacuum in a
compression chamber due to linear reciprocating motion of a drive
part, so as to provide a low-noise product and an energy-efficient
pump.
[0009] Another object of the present invention is to provide a high
output pump which achieves a larger delivery volume of suction
fluid with the same energy so that it can form higher pressure in a
compression chamber.
[0010] A further object of the present invention is to provide a
high capacity pump which achieves a larger delivery volume of
suction fluid with the same product size.
[0011] A further object of the present invention is to provide a
pump having excellent low noise and excellent durability in which a
frictional surface of a drive part is minimized to a central
oil-less bushing to provide reversible and smooth driving.
Solution to Problem
[0012] A pump according to the present invention is a pump having a
suction port for sucking a fluid, a compression chamber for
compressing the sucked fluid, and an outlet port for feeding out
the compressed fluid, the pump including: a drive source having a
rotating shaft; a rotating part having a central portion connected
to the rotating shaft and having at least one pair of rotating-side
magnets of different magnetic poles arranged in a circumferential
direction; and a drive part including at least one pair of
linear-motion-side magnets of different magnetic poles wherein the
at least one pair of linear-motion-side magnets is arranged so as
to correspond to the at least one pair of magnets of the rotating
part, wherein the drive part is mounted to be able to move close to
or away from the rotating part and able to perform linear
reciprocating motion within the compression chamber by suction
force or repulsive force between the rotating-side magnets and the
liner-motion-side magnets that is displaced by rotation of the
rotating part.
[0013] Further, the pump according to the present invention
preferably includes: a housing head in which the suction port and
the outlet port are formed; a wheel housing that houses the
rotating part and the drive part; and a housing that rotatably
holds the rotating shaft and fixes the drive source.
[0014] Further, in the pump according to the present invention, it
is preferable that the housing head and the wheel housing are fixed
via a fixing step of a drive membrane.
[0015] Further, in the pump according to the present invention, it
is preferable that the compression chamber is defined by at least
the housing head and the drive membrane.
[0016] The above summary of the invention does not enumerate all
the necessary features of the invention, and a sub-combination of
these features may also be an invention.
Advantageous Effects of Invention
[0017] According to the pump of the present invention, the drive
part is driven by suction force and repulsive force of magnets, so
that direct friction between parts is reduced, noise and wear are
reduced, and durability is improved, and further the suction force
and repulsive force of the magnets which are stronger in orthogonal
direction are obtained, and the drive part is driven in linear
reciprocating motion by generation of energy which is stronger than
force for rotation, and thereby highly efficient energy can be
obtained, and the drive part is driven while the magnets are
displaced, and thereby excellent sealing force of the compression
chamber is obtained, so that a high output pump having a higher
delivery pressure relative to required energy and a high efficiency
pump having a smaller product size relative to delivery volume can
be provided.
BRIEF DESCRIPTION OF DRAWINGS
[0018] FIG. 1 is a sectional view of a schematically arranged pump
according to the present invention.
[0019] FIG. 2 is a perspective view showing some partially coupled
components of a motor and a housing of the pump according to the
present invention.
[0020] FIG. 3 is a perspective view showing some partially coupled
components including the housing, a thrust bearing, and an inserted
rotating shaft of the pump according to the present invention.
[0021] FIG. 4 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein the thrust bearing is inserted in the rotating shaft.
[0022] FIG. 5 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein a wheel housing is coupled with the housing.
[0023] FIG. 6 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein a key is coupled to the rotating shaft and a rotating
plate.
[0024] FIG. 7 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein the rotating plate is fixed by a fixing nut to the rotating
shaft.
[0025] FIG. 8 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein magnets are inserted in the rotating plate.
[0026] FIG. 9 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein a drive membrane is mounted and assembled on the wheel
housing.
[0027] FIG. 10 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein magnets are inserted in the rotating plate and coupled to
the rotating part.
[0028] FIG. 11 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein magnets are inserted in the drive membrane and coupled to
the drive part.
[0029] FIG. 12 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein a compression chamber is in a vacuum state.
[0030] FIG. 13 is a perspective view showing some extracted and
enlarged components of the pump according to the present invention
wherein a compression chamber is in a compressed state.
[0031] FIG. 14 is a perspective view showing an appearance of the
pump according to the present invention.
[0032] FIG. 15 is an extracted and enlarged perspective view of a
magnet of the pump according to the present invention.
[0033] FIG. 16 is an extracted and enlarged perspective view of a
housing head of the pump according to the present invention.
[0034] FIG. 17 is a configuration diagram showing a schematic block
diagram of a reciprocating pump of the conventional art.
DESCRIPTION OF EMBODIMENTS
[0035] Hereinafter, preferred embodiments for carrying out the
present invention will be described with reference to the drawings.
The following embodiments do not limit the invention according to
each claim, and not all the combinations of features described in
the embodiments are necessarily essential for the solution of the
invention.
[0036] FIG. 1 is a sectional view in which some components of a
pump are schematically arranged, and the pump includes a motor 10
as a drive source, a housing 20, a wheel housing 30, a housing head
40, thrust bearings 52, 53, a fixing pin 51, a rotating plate 60, a
rotating part 70, a drive part 80, a drive membrane 90, and check
valves 43, 44, which are coupled together; FIG. 2 is a perspective
view showing some extracted and enlarged components wherein the
motor 10 and the housing 20 are fixedly coupled; FIG. 3 is a
perspective view showing some extracted and enlarged components
wherein a rotating shaft 50 is inserted in a motor shaft 11 and
coupled therewith by the fixing pin 51 being inserted in a pin hole
12 of the motor shaft and a pin hole 55 of the rotating shaft; FIG.
4 is a perspective view showing some extracted and enlarged
components wherein the thrust bearings 52, 53 are coupled to the
rotating shaft 50; FIG. 5 is a perspective view showing some
extracted and enlarged components wherein the housing 20 and the
wheel housing 30 are coupled with each other (not shown), and a key
34 is inserted in and coupled to a key portion 19 of the rotating
shaft 50; FIG. 6 is a perspective view showing some extracted and
enlarged components wherein the key 34 is inserted in the key
portion 19 of the rotating shaft 50 and a key portion 69 of the
rotating plate 60, so that the rotating shaft and the rotating
plate are coupled with each other as if frozen, and threaded
portions 64, 65 are formed to which fixing nuts are coupled to fix
the rotating part 70 to the rotating plate; FIG. 7 is a perspective
view showing some extracted and enlarged components wherein the
rotating shaft 50 and the rotating plate 60 are coupled with a
fixing nut 13 so as to be coupled not to be separated and detached
from each other; FIG. 8 is a perspective view showing some
extracted and enlarged components wherein magnets 67, 68, which
form rotating-side magnets, are inserted in and coupled to the
rotating plate 60; FIG. 9 is a perspective view showing some
extracted and enlarged components wherein a fixing step 91 of the
drive membrane 90 is coupled to a fixing portion 39 of the wheel
housing 30; FIG. 10 is a perspective view showing some extracted
and enlarged components wherein the magnets 67, 68 are inserted in
and coupled to the rotating plate 60 such that their magnetisms
correspond to each other, and a circular step 66, circular portions
61, 71, and the key portion 69 are formed in the central portion,
so that the rotating plate 60 is fixedly coupled with the rotating
shaft 50 to be able to smoothly rotate without being separated and
detached therefrom while a certain space is being kept; FIG. 11 is
a perspective view showing some extracted and enlarged components
wherein magnets 87, 88, which form liner-motion-side magnets, are
arranged so as to correspond to each other and inserted in the
drive membrane 90, which is fastened and coupled to the drive part
80 and threaded portions 84, 85 by screws 17, 18, and an oil-less
bushing 92 is inserted in and coupled to a center 81; and FIG. 16
is an extracted and enlarged perspective view of the shape of the
housing head 40 in which a lower section is opened and formed as a
circular shape, a fixing portion 49 to which a fixing step 91 is to
be fixed is formed on the opened circumference surface, a
cylindrical shape having openings 41, 42 at both ends of an upper
section is formed, and a fixing step (not shown) and a
regular-interval thread portion are formed therein.
[0037] The pump according to the present embodiment will be
described in more detail with reference to the illustrated
drawings, in which as shown in FIG. 12, the drive membrane 90 is
driven toward the rotating part 70 by suction forces of magnets of
the rotating part 70 and the drive part 80, so that a compression
chamber 99 becomes in a vacuum state, and fluid is sucked through
the suction port 41, and as shown in FIG. 13, the drive membrane 90
is driven apart from the rotating part 70 by repulsive forces of
magnets of the rotating part 70 and the drive part 80, so that the
compression chamber 99 becomes in a compressed state, and the fluid
in the compression chamber 99 is delivered from the outlet port 42.
The compression chamber 99 is defined by the housing head 40, the
drive membrane 90, and the wheel housing 30, which will be
described later.
[0038] More specifically, with reference to the accompanying
drawings, a fixing portion (not shown) of the motor 10 and fixing
portions 22, 23 of the housing 20 are fastened and fixed by screws
(not shown), as shown in FIG. 2.
[0039] As shown in FIG. 3, the thrust bearing 52 is inserted and
mounted in a bearing holder 21 of the housing 20 so that the
rotating shaft 50 can support load in the axial direction, and the
motor shaft 11 is inserted in the rotating shaft 50 and coupled
therewith by the fixing pin 51 being inserted in the pin hole 12 of
the motor 10, the pin hole 55 of the rotating shaft, and a pin hole
54 of the thrust bearing. As shown in FIG. 4, the thrust bearing 53
is inserted in the rotating shaft 50, the thrust bearing 53 is
mounted to a bearing holder 31, and the housing 20 and the wheel
housing 30 are fixed (not shown) and coupled with each other.
[0040] The key 34 is inserted in the key portion 19 of the rotating
shaft 50 as shown in FIG. 5 and inserted in the key portion 69 of
the rotating plate 60 as shown in FIG. 6, so that the rotating
shaft and the rotating plate are coupled with each other, and the
fixing nut 13 is coupled to the threaded portion of the rotating
shaft as shown in FIG. 7, so that the rotating shaft 50 and the
rotating plate 60 are coupled with each other and assembled to be
able to smoothly rotate without being separated and detached.
[0041] Although the rotating shaft of the motor and the rotating
plate used in the pump according to the present embodiment are
preferably constructed individually and then integrated with each
other, the rotating shaft and the rotating plate may be integrally
constructed.
[0042] As shown in FIG. 8, in the pump according to the present
embodiment, the magnets 67, 68 are arranged in magnet grooves 62,
63 of the rotating plate 60 such that their magnetisms correspond
to each other, and inserted therein to be coupled with the rotating
part (not shown). As shown in FIG. 9, the fixing step 91 of the
drive membrane 90 is coupled and mounted to the fixing portion 39
of the wheel housing 30.
[0043] Although it is desirable that the drive membrane of the pump
according to the present embodiment is separated from the wheel
housing and the drive membrane is mounted to the fixing portion,
the drive membrane may be formed integrally with the wheel housing,
and may be fixed by an alternatively configured fixing method.
[0044] As shown in FIG. 10, in the pump according to the present
embodiment, the magnets 67, 68 are inserted in magnet portions 62,
63 of the rotating plate 60 and magnet portions 72, 73 of the
rotating part 70 such that their magnetisms correspond to each
other, and the threaded portions 64, 65 of the rotating plate and
threaded portions 74, 75 of the rotating part are fastened by
screws 15, 16, and the circular step 66, the circular portions 61,
71, and the key portion 69 are formed in the central portion, so
that the rotating plate is coupled with the rotating shaft 50 and
arranged to be able to smoothly rotate within the wheel housing so
as to allow reversible rotation without being separated and
detached within the wheel housing.
[0045] As shown in FIG. 11, in the pump according to the present
embodiment, the magnets 87, 88 are arranged in the drive membrane
90 such that their magnetisms correspond to each other, and
inserted in magnet portions 82, 83 of the drive part 80, and
threaded portions (not shown) of the drive membrane 90 and the
threaded portions 84, 85 of the drive part are fastened and coupled
by the screws 17, 18, the oil-less bushing 92 is inserted in the
center 81 such that the fixing nut 13 is inserted therein to allow
reversible rotation. Preferably, the magnets 67, 68, constituting
the rotating-side magnets, and the magnets 87, 88, constituting the
liner-motion-side magnets, are formed in generally cylindrical
shape and configured to have S or N poles at both ends of the axial
direction as shown in FIG. 15.
[0046] As shown in FIG. 12, in the pump according to the present
embodiment, when the motor shaft 11 and the rotating shaft 50 of
the motor 10 rotate, the rotating plate 60 and the rotating part 70
are rotated, and when the magnets 67 and 68 of the rotating part
and the magnets 87, 88 of the drive part 80 are positioned on the
same line with different polarities respectively, suction force is
generated between the magnets 67, 68 and the magnets 87, 88 so that
the drive part 80 and the drive membrane 90 are moved in a
direction closer to the rotating part 70.
[0047] A vane (not shown) of the drive membrane 90 of the pump
according to the present embodiment is made of soft mixed material
or elastic material, and configured such that driving is controlled
within a certain range, and a constant distance is maintained
between the drive part 80 and the rotating part 70 even when the
drive membrane 90 comes closest to the rotating part 70, so that
the drive part and the rotating part do not come into contact with
each other.
[0048] At this time, a vacuum is formed in the sealed compression
chamber 99 by the drive membrane 90, and therefore, the fluid is
sucked through the suction port into the compression chamber 99 by
one check valve 44, which closes a flow path so that the fluid is
sucked through the suction port 41, and the other check valve 43,
which opens a flow path.
[0049] As shown in FIG. 13, in the pump according to the present
embodiment, when the motor shaft 11 and the rotating shaft of the
motor 10 are rotated, the rotating plate 60 and the rotating part
70 are rotated, and the magnets 67 and 68 of the rotating part and
the magnets 87, 88 of the drive part 80 are positioned on the same
line with the same polarities respectively, repulsive force is
generated between the magnets 67, 68 and the magnets 87, 88 so that
the drive part 80 and the drive membrane 90 are linearly moved
within the compression chamber 99 in the direction of the
compression chamber.
[0050] At this time, the sealed compression chamber 99 becomes in a
compressed state by the movement of the drive membrane, and
therefore, the fluid in the compression chamber is fed out through
the outlet port 42 by one check valve 43, which closes a flow path
so that the fluid in the compression chamber is delivered through
the outlet port 42, and the other check valve 44, which opens a
flow path.
[0051] Accordingly, as shown in FIG. 12, when the compression
chamber 99 becomes in a vacuum state, the check valve 44 of the
outlet port 42 is closed and the check valve 43 of the suction port
41 is opened so that fluid is sucked through the suction port, and
as shown in FIG. 13, when the compression chamber 99 becomes in a
compressed state, the check valve 43 of the suction port 41 is
closed and the check valve 44 of the outlet port 42 is opened so
that fluid is fed out through the outlet port.
[0052] Therefore, the pump according to the present embodiment
allows continuous suction and delivery of fluid by repeatedly
performing the operations of FIG. 12 and FIG. 13.
[0053] The pump according to the present embodiment is preferably
configured so that the thrust bearings 52, 53 can support load of
axial force as shown in FIG. 4, but may be replaced with other
types of bearings or deleted.
[0054] In the pump according to the present embodiment, the shape
of the rotating shaft 50 as shown in FIG. 3 may be changed to a
shape not shown, and the rotating shaft 50 may be replaced with a
different power transmission device.
[0055] The pump according to the present embodiment is preferably
configured so that the rotating plate 60 and the rotating part 70
are separately constructed and then coupled with each other as
shown in FIG. 10, but may be integrally constructed. Further, it is
preferable that the drive membrane 90 and the drive part 80 are
separately constructed and then coupled with each other as shown in
FIG. 11, but they may be integrally constructed.
[0056] The pump according to the present embodiment is preferably
configured so that the drive membrane 90 is made of soft or elastic
material as shown in FIG. 11, but may be deformed into a cylinder.
In addition, since the outer peripheral surface of the drive part
80 and the inner peripheral surface 33 of the wheel housing 30 are
not frictioned, a pump having excellent low noise and excellent
durability can be provided, and since the drive part is driven only
by displacement of magnets, a high efficiency pump can be provided.
It is apparent from the claims that embodiments with such
modifications or improvements may also be included in the technical
scope of the present invention.
REFERENCE SIGNS LIST
[0057] 10 Motor (Drive source) [0058] 20 Housing [0059] 30 Wheel
housing [0060] 40 Housing head [0061] 41 Suction port [0062] 42
Outlet port [0063] 50 Rotating shaft [0064] 60 Rotating plate
[0065] 67, 68 Magnet (Rotating-side magnets) [0066] 70 Rotating
part [0067] 80 Drive part [0068] 87, 88 Magnet (Liner-motion-side
magnets) [0069] 90 Drive membrane [0070] 99 Compression chamber
* * * * *