U.S. patent application number 11/378942 was filed with the patent office on 2007-09-20 for diaphragm pumping device.
Invention is credited to Jackey Chiou.
Application Number | 20070217929 11/378942 |
Document ID | / |
Family ID | 38518029 |
Filed Date | 2007-09-20 |
United States Patent
Application |
20070217929 |
Kind Code |
A1 |
Chiou; Jackey |
September 20, 2007 |
Diaphragm pumping device
Abstract
A diaphragm pumping device includes a housing having a partition
to form two chambers and two ports communicating with the
respective chambers for receiving a fluid, one or more bladders
attached to the housing and communicating with the chambers of the
housing respectively, and an actuating device for actuating the
bladder to force the fluid to flow between the chambers of the
housing via the bladders. One or more check valves may be disposed
between the bladder and the chambers of the housing to control the
flowing direction of the fluid. The housing and the bladder may be
acted as a silencer for reducing the noises that may be generated
by various pumping devices.
Inventors: |
Chiou; Jackey; (Nangan
Gonyeh Chu, TW) |
Correspondence
Address: |
CHARLES E. BAXLEY, ESQ.
90 JOHN STREET
THIRD FLOOR
NEW YORK
NY
10038
US
|
Family ID: |
38518029 |
Appl. No.: |
11/378942 |
Filed: |
March 17, 2006 |
Current U.S.
Class: |
417/412 |
Current CPC
Class: |
F04B 43/04 20130101;
F04B 43/026 20130101; F04B 43/084 20130101; F04B 45/022 20130101;
F04B 45/027 20130101 |
Class at
Publication: |
417/412 |
International
Class: |
F04B 43/00 20060101
F04B043/00 |
Claims
1. A diaphragm pumping device comprising: a housing including a
partition provided therein, to separate an inner portion of said
housing into a first chamber and a second chamber, said housing
including at least one first port provided thereon and
communicating with said first chamber thereof, and including a
second port provided thereon and communicating with said second
chamber thereof, for receiving a fluid, at least one bladder
attached to said housing, and communicating with said first chamber
and said second chamber of said housing, and means for actuating
said at least one bladder to force the fluid into or out of said
second chamber of said housing via said second port, and then into
or out of said first chamber of said housing, and to flow into or
out through said at least one first port of said housing.
2. The diaphragm pumping device as claimed in claim 1, wherein said
housing includes a first check valve attached thereto and disposed
between said at least one bladder and said first chamber of said
housing, and arranged to allow the fluid to flow from said at least
one bladder into said first chamber of said housing only, and to
prevent the fluid from flowing backward from said first chamber of
said housing into said at least one bladder, and includes a second
check valve attached thereto and disposed between said at least one
bladder and said second chamber of said housing, and arranged to
allow the fluid to flow from said second chamber of said housing
into said at least one bladder only, and to prevent the fluid from
flowing backward from said at least one bladder into said second
chamber of said housing.
3. The diaphragm pumping device as claimed in claim 2, wherein said
housing includes a first cavity and a second cavity formed therein
and communicating with said first and said second chambers of said
housing respectively, said first and said second check valves each
includes a shank extended therefrom, for engaging through said
housing, and each includes a ratchet catch provided on said shank
for engaging with said housing, to anchor and secure said first and
said second check valves to said housing, and each includes a blade
provided on said shank for engaging with said housing, and for
selectively blocking said first and said second cavities of said
housing respectively.
4. The diaphragm pumping device as claimed in claim 3, wherein said
housing includes two annular depressions formed therein and
communicating with said first and said second cavities of said
housing respectively, to form two peripheral bulges which are
located around said first and said second cavities of said housing
respectively, and provided for engaging with said blades of said
first and said second check valves respectively.
5. The diaphragm pumping device as claimed in claim 1, wherein said
actuating means includes an arm attached to said at least one
bladder, and means for operating said arm to depress and to expand
said at least one bladder, in order to force the fluid to flow to
or from said second port of said housing toward said at least one
first port of said housing.
6. The diaphragm pumping device as claimed in claim 5, wherein said
operating means includes a magnetic member attached to said arm,
and an electromagnetic device to actuate said magnetic member to
operate said arm.
7. The diaphragm pumping device as claimed in claim 6, wherein said
housing includes a retainer provided thereon, and said arm includes
a first end pivotally coupled to said retainer of said housing, and
a second end having said magnetic member attached thereto.
8. The diaphragm pumping device as claimed in claim 1 further
comprising an outer receptacle, and a container disposed in said
outer receptacle, to support said housing in said outer
receptacle.
9. The diaphragm pumping device as claimed in claim 8, wherein said
container includes at least one cushioning member disposed between
said container and said outer receptacle, to cushion said
container.
10. A silencer comprising: a housing including a partition provided
therein, to separate an inner portion of said housing into a first
chamber and a second chamber, said housing including at least one
first port provided thereon and communicating with said first
chamber thereof, and including a second port provided thereon and
communicating with said second chamber thereof, for receiving a
fluid, said housing including a casing, said partition being
extended from said casing to have said casing communicated with
said first and said second chambers of said housing, and said
casing including a first cavity and a second cavity formed therein
and communicating with said first and said second chambers of said
housing respectively, and at least one bladder attached to said
casing, and including a compartment formed therein and arranged
between said at least one bladder and said casing, and
communicating with said first and said second chambers of said
housing, for allowing the fluid to flow between said first and said
second chambers of said housing, via said compartment of said at
least one bladder.
11. The diaphragm pumping device as claimed in claim 10, wherein
said casing includes two holes located in different side of said
partition and communicating with said first and said second
chambers of said housing respectively, and first and said second
cavities are arranged around said holes of said casing
respectively.
12. The diaphragm pumping device as claimed in claim 10, wherein
said housing includes two annular depressions formed therein and
communicating with said first and said second cavities of said
housing respectively, to form two peripheral bulges which are
located around said first and said second cavities of said housing
respectively.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a diaphragm pumping device,
and more particularly to a diaphragm pumping device for vacuuming
or air pumping purposes, and having one or more silencers for
reducing noises that may be generated by the pumping device.
[0003] 2. Description of the Prior Art
[0004] Typical air pumping devices or air compressors comprise a
piston slidably received and engaged in a cylinder housing, and a
motor driving device coupled to a piston rod for moving or driving
the piston to move in reciprocating action within the cylinder
housing, in order to generate and to supply a pressurized air to
inflate various objects.
[0005] For example, U.S. Pat. No. 5,215,447 to Wen discloses one of
the typical mini-type air compressors comprising a motor having a
driving axle connected with a driving gear, for coupling to and for
moving or driving the piston to move in reciprocating action within
the cylinder housing via an eccentric member. However, a great
noise will be generated when the piston is moved in a great speed
relative to the cylinder housing.
[0006] U.S. Pat. No. 5,358,385 to Wang discloses a typical dual
diaphragm pump with adjustable discharge side pressure trip switch
comprising a dual piston device coupled to a motor driving device
via an eccentric transmission device for generating and supplying a
pressurized air to inflate various objects. However, the movement
and thus pumping operation of the disk shaped suction disk is
limited.
[0007] U.S. Pat. No. 6,413,056 to Chou discloses another typical
air compressor comprising a motor coupled to a fan device for
moving or driving the fan device to pump the air and to generate
and supply a pressurized air to various objects. However,
similarly, a great noise will also be generated by the fan device
when the fan device is operated or driven by the motor.
[0008] The present invention has arisen to mitigate and/or obviate
the afore-described disadvantages of the conventional diaphragm
pumping devices.
SUMMARY OF THE INVENTION
[0009] The primary objective of the present invention is to provide
a diaphragm pumping device for being actuated or operated by
electric actuating device, and for vacuuming or air pumping
purposes.
[0010] The other objective of the present invention is to provide a
diaphragm pumping device including one or more silencers or
silencing devices for reducing noises that may be generated by the
pumping device.
[0011] In accordance with one aspect of the invention, there is
provided a diaphragm pumping device includes a housing including a
partition provided therein, to separate an inner portion of the
housing into a first chamber and a second chamber, the housing
including at least one first port provided thereon and
communicating with the first chamber thereof, and including a
second port provided thereon and communicating with the second
chamber thereof, for receiving a fluid, at least one bladder
attached to the housing, and communicating with the first chamber
and the second chamber of the housing, and an actuating device for
actuating the bladder to force the fluid into or out of the second
chamber of the housing via the second port, and then into or out of
the first chamber of the housing, and to flow into or out through
the first port of the housing.
[0012] The housing includes a first check valve attached thereto
and disposed between the bladder and the first chamber of the
housing, and arranged to allow the fluid to flow from the bladder
into the first chamber of the housing only, and to prevent the
fluid from flowing backward from the first chamber of the housing
into the bladder, and includes a second check valve attached
thereto and disposed between the bladder and the second chamber of
the housing, and arranged to allow the fluid to flow from the
second chamber of the housing into the bladder only, and to prevent
the fluid from flowing backward from the bladder into the second
chamber of the housing.
[0013] The housing includes a first cavity and a second cavity
formed therein and communicating with the first and the second
chambers of the housing respectively, the first and the second
check valves each includes a shank extended therefrom, for engaging
through the housing, and each includes a ratchet catch provided on
the shank for engaging with the housing, to anchor and secure the
first and the second check valves to the housing, and each includes
a blade provided on the shank for engaging with the housing, and
for selectively blocking the first and the second cavities of the
housing respectively.
[0014] The housing includes two annular depressions formed therein
and communicating with the first and the second cavities of the
housing respectively, to form two peripheral bulges which are
located around the first and the second cavities of the housing
respectively, and provided for engaging with the blades of the
first and the second check valves respectively.
[0015] The actuating device includes an arm attached to the
bladder, and device for operating the arm to depress and to expand
the bladder, in order to force the fluid to flow to or from the
second port of the housing toward the first port of the
housing.
[0016] The operating device includes a magnetic member attached to
the arm, and an electromagnetic device to actuate the magnetic
member to operate the arm. The housing includes a retainer provided
thereon, and the arm includes a first end pivotally coupled to the
retainer of the housing, and a second end having the magnetic
member attached thereto.
[0017] An outer receptacle may further be provided, and a container
may further be provided and disposed in the outer receptacle, to
support the housing in the outer receptacle. The container includes
at least one cushioning member disposed between the container and
the outer receptacle, to cushion the container.
[0018] The housing and the bladder may also be used or acted as a
silencer for coupling to various pumping devices and for reducing
or decreasing the noises that may be generated by the pumping
devices.
[0019] Further objectives and advantages of the present invention
will become apparent from a careful reading of the detailed
description provided hereinbelow, with appropriate reference to the
accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1 is a partial exploded view of an air compressing
assembly having a diaphragm pumping device in accordance with the
present invention;
[0021] FIG. 2 is another partial exploded view illustrating the
diaphragm pumping device;
[0022] FIG. 3 is a further partial exploded view of the diaphragm
pumping device;
[0023] FIG. 4 is a still further partial exploded view of the
diaphragm pumping device;
[0024] FIG. 5 is a still further partial exploded view of the
diaphragm pumping device;
[0025] FIG. 6 is a partial perspective view of the diaphragm
pumping device;
[0026] FIG. 7 is a cross sectional view of the diaphragm pumping
device, taken along lines 7-7 of FIG. 6;
[0027] FIG. 8 is a cross sectional view similar to FIG. 7,
illustrating the other operation of the diaphragm pumping device
which is acted as a silencer;
[0028] FIGS. 9, 10 are cross sectional view similar to FIGS. 7 and
8, illustrating the operation of the diaphragm pumping device as an
air pumping device; and
[0029] FIGS. 11, 12, 13-are partial perspective views similar to
FIG. 6, illustrating other arrangements of the diaphragm pumping
device.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0030] Referring to the drawings, and initially to FIG. 1, an air
compressing assembly 10 in accordance with the present invention
comprises an outer receptacle 11 including such as two members 12,
13 or a base member 12 and an upper member 13 to be secured
together with fasteners (not shown), or by welding processes, and
including a plug 14 for coupling to an electric energy source and
for receiving an electric energy to energize the air compressing
assembly 10.
[0031] Referring next to FIGS. 2-4, and again to FIG. 1, the air
compressing assembly 10 further includes a container 20 disposed in
the outer receptacle 11 for receiving a diaphragm pumping device 30
therein. It is preferable that the outer receptacle 11 includes a
number of pads or cushioning legs or members 21 (FIG. 2) disposed
between the container 20 and the outer receptacle 11 for cushioning
the container 20 and the diaphragm pumping device 30 and for
reducing a vibration of the container 20 and the diaphragm pumping
device 30 relative to the outer receptacle 11.
[0032] As shown in FIGS. 1 and 3-4, the container 20 may include a
large chamber 22 formed therein for receiving the diaphragm pumping
device 30 therein, and a cover 23 attached or secured onto the
container 20 for enclosing the chamber 22 of the container 20.
Alternatively, as shown in FIG. 2, the chamber 22 of the container
20 may include a relatively smaller volume and enclosed with a
larger housing-shaped cover 23, for allowing the diaphragm pumping
device 30 to be easily engaged into the chamber 22 of the container
20.
[0033] The diaphragm pumping device 30 includes a housing 4 having
such as two housing members 40 to be anchored or secured together
with such as a peripheral recess and peripheral protrusion
engagement 41 (FIGS. 7-10), latches or fasteners (not shown), or
the like for solidly anchoring or securing the two housing members
40 together. The two housing members 40 may further be solidly
coupled and secured together with such as adhesive materials, or by
welding processes.
[0034] The housing 4 includes a partition 43 provided therein, such
as extended from the housing members 40, to separate the inner
portion of the housing 4 into two chambers 44, 45, as also shown in
FIGS. 7-10, and preferably includes a narrowed neck portion 46
formed in a middle portion of the chamber 44 thereof (FIGS. 5, 6).
The housing 4 further includes one or more, such as two tubes or
ports 47 provided thereon, or extended therefrom, such as extended
from the two housing members 40 respectively, and communicating
with the chamber 44 thereof, for receiving fluid or liquid or air
(FIGS. 7, 9) or for outwardly supplying the fluid or liquid or air
(FIGS. 8, 10).
[0035] The housing 4 further includes another tube or port 48
provided thereon, or extended therefrom, such as extended from one
of the housing members 40, and communicating with the other chamber
45 thereof, for engaging with a hose 42 (FIGS. 3, 4). For example,
the hose 42 may be engaged through a hole or notch 24 of the
container 20 and attached or coupled to the inlet port 48 of the
housing 4, for allowing the fluid or liquid or air to flow into or
out of the chamber 45 of the housing 4 (FIGS. 7-10).
[0036] As also shown in FIGS. 7-10, the housing 4 further includes
one or more, such as two casings 50 oppositely protruded from the
housing members 40 respectively and having the partition 43
extended from the middle portions of the casings 50 respectively,
to have the casings 50 communicated with the chambers 44, 45 of the
housing 4, and further includes two holes 51, 52; 53, 54 formed in
each of the casings 50, and located in different side of the
partition 43, and communicating with the chambers 44, 45 of the
housing 4 respectively, and further includes a number of cavities
55 formed in each of the casings 50 and arranged around the holes
51, 52; 53, 54 of the casings 50 respectively, and also
communicating with the chambers 44, 45 of the housing 4
respectively.
[0037] It is preferable that the housing 4 further includes two
annular depressions 56 formed in each of the casings 50 and
arranged around the holes 51, 52; 53, 54 of the casings 50
respectively, and communicating with the cavities 55 of the housing
4 respectively, to form or define two peripheral bulges 57, 58, in
which the inner peripheral bulge 57 is formed and located around
the holes 51, 52; 53, 54 of the casings 50 respectively, and the
outer peripheral bulge 58 is formed and located around the cavities
55 of the housing 4 respectively, or to have the cavities 55 of the
housing 4 formed and located between the two peripheral bulges 57,
58, best shown in FIGS. 5 and 7-10.
[0038] One or more, such as two bladders 60 are attached onto the
casings 50 respectively, and each includes a compartment 62 formed
therein (FIGS. 5, 7-10) and arranged or located between the
bladders 60 and the casings 50 respectively, and the bladders 60
are deformable or compressible and expandable to force air or water
or fluid or liquid through the cavities 55 of the housing 4 (FIGS.
7-10), which will be discussed hereinafter. Two arms 63 are further
provided and attached or coupled to the bladders 60 respectively
(FIG. 2), for depressing or compressing and expanding the bladders
60 respectively.
[0039] For example, the housing 4 further includes two hooks or
retainers 49 provided thereon, such as extended from the housing
members 40 respectively (FIG. 2), and located close to the outlet
ports 47. The arms 63 each includes a middle portion attached or
coupled to the bladders 60 respectively, and one end 64 hooked or
pivotally coupled to the housing 4 with the retainers 49 (FIG. 2),
and the other end or the free end having a magnet or magnetic
member 65 attached thereto.
[0040] An electro-magnetic device 66 is attached to the housing 4,
and disposed close to or beside the magnetic members 65 of the arms
63, for generating electromagnetic field or force to force or to
move the magnetic member 65 toward each other, and/or away from
each other, in order to actuate the arms 63 to depress or compress
and expand the bladders 60 respectively, and thus to force the air
or water or fluid or liquid to flow between the compartments 62 of
the bladders 60 and the chambers 44, 45, of the housing 4 and/or of
the casings 50. It is preferable that the electromagnetic device 66
is disposed or supported in the chamber 22 of the container 20.
[0041] Four check valves 70, 71, 72, 73 each includes a shank 74
extended therefrom, for engaging through the holes 51, 52; 53, 54
of the casings 50 respectively, and each further includes a ratchet
catch 75 provided on the shank 74, for engaging through the holes
51, 52; 53, 54 of the casings 50 respectively, and for engaging
with the casings 50, for anchoring or securing the check valves
70-73 to the casings 50 and between the bladders 60 and the
chambers 44, 45, of the housing 4 and/or of the casings 50
respectively.
[0042] Each of the check valves 70, 71, 72, 73 includes a resilient
blade 76 formed or provided on one end of the shank 74, for
engaging with the peripheral bulges 57, 58 of the casings 50
respectively, and for selectively blocking or opening the cavities
55 of the housing 4 respectively, best shown in FIGS. 9, 10, in
order to form the check valves 70, 71, 72, 73, and so as to control
the flowing of the air or water or fluid or liquid between the
compartments 62 of the bladders 60 and the chambers 44, 45, of the
housing 4 and/or of the casings 50.
[0043] For example, when the magnetic member 65 are forced or moved
away from each other by the electro-magnetic device 66, or when the
bladders 60 are expanded by the arms 63, the check valves 70, 72
may be opened by the bladders 60, to allow the air or water or
fluid or liquid to flow or to be drawn form the chamber(s) 44 of
the housing 4 and/or of the casings 50 toward the compartments 62
of the bladders 60 (FIG. 9), and thus to allow the air or water or
fluid or liquid to be drawn into the chamber(s) 44 of the housing 4
and/or of the casings 50 via the ports 47 of the housing 4.
[0044] At this moment, the other check valves 71, 73 will be forced
to enclose the chamber(s) 45 of the housing 4 and/or of the casings
50 by the bladders 60, to prevent the air or water or fluid or
liquid from flowing backward form the chamber(s) 45 of the housing
4 and/or of the casings 50 toward the compartments 62 of the
bladders 60, and thus to allow the air or water or fluid or liquid
to be drawn from the chamber(s) 44 of the housing 4 and/or of the
casings 50 into the compartments 62 of the bladders 60 only.
[0045] On the contrary, as shown in FIG. 10, the check valves 70,
71, 72, 73 may be disposed or arranged in the position different
from that shown in FIG. 9, for allowing the check valves 70, 72 to
be opened by the bladders 60 and to allow the air or water or fluid
or liquid to be forced to flow form the compartments 62 of the
bladders 60 toward the chamber(s) 44 of the housing 4 and/or of the
casings 50 and then to allow the air or water or fluid or liquid to
flow out of the housing 4 via the ports 47 of the housing 4 when
the magnetic member 65 are forced or moved toward each other by the
electromagnetic device 66 and when the bladders 60 are compressed
by the arms 63.
[0046] At this moment, the other check valves 71, 73 will be forced
to be forced to enclose the chamber(s) 45 of the housing 4 and/or
of the casings 50 by the depressing or compressing or pumping force
of the bladders 60, to prevent the air or water or fluid or liquid
from flowing backward form the compartments 62 of the bladders 60
toward the chamber(s) 45 of the housing 4 and/or of the casings 50,
and thus to prevent the air or water or fluid or liquid from being
forced to flow backwardly into the chamber(s) 45 of the housing 4
and/or of the casings 50.
[0047] In operation, the air or water or fluid or liquid may be
drawn to flow into the chamber(s) 45 of the housing 4 and/or of the
casings 50 via the inlet port 48 of the housing 4 (FIG. 10), and
then to flow form the chamber(s) 45 of the housing 4 and/or of the
casings 50 toward the compartments 62 of the bladders 60 when the
bladders 60 are expanded in the configuration or arrangement as
shown in FIG. 10. The air or water or fluid or liquid may then be
forced to flow form the compartments 62 of the bladders 60 toward
the chamber(s) 44 of the housing 4 and/or of the casings 50, and
then to flow out through the ports 47 of the housing 4 when the
bladders 60 are depressed or compressed, such that the air or water
or fluid or liquid may be pumped to flow form the inlet port 48 of
the housing 4 to the outlet ports 47 of the housing 4 by the
bladders 60 step by step.
[0048] The arms 63 and the magnetic member 65 and the
electromagnetic device 66 may thus be formed as an actuating means
or device for depressing or compressing or pumping the bladders 60,
to draw the fluid or liquid or air into one of the chambers 45 of
the housing 4 and/or of the casings 50 via the inlet port 48 of the
housing 4, and then to force the fluid or liquid to flow into the
other chamber 44 of the housing 4 and/or of the casings 50, and
then to force the fluid or liquid to flow out through the port 47
of the housing 4. The magnetic member 65 and the electromagnetic
device 66 may thus be formed as an operating means or device for
actuating or operating the arms 63 to depress or compress or pump
or to expand the bladders 60, in order to draw and to force the
fluid or liquid to flow form the port 48 of the housing 4 to the
ports 47 of the housing 4.
[0049] On the contrary, as shown in FIG. 9, when the bladders 60
are depressed or compressed by the arms 63 and the electromagnetic
device 66, the fluid or liquid may be drawn and forced to flow form
the compartments 62 of the bladders 60 into the chambers 45 of the
housing 4 and/or of the casings 50 and then to flow out through the
inlet port 48 of the housing 4. The fluid or liquid may be drawn
and forced to flow form the chamber 44 of the housing 4 and/or of
the casings 50 into the compartments 62 of the bladders 60 when the
bladders 60 are expanded by the arms 63 and the electromagnetic
device 66, such that the fluid or liquid may also be drawn and
forced to flow form the ports 47 of the housing 4 to the port 48 of
the housing 4 by the bladders 60 step by step.
[0050] As shown in FIGS. 1-4 and 11-13, the air compressing
assembly 10 may further include one or more kinds of silencers 8
having various kinds of ports 47, 48 for coupling to either or both
of the ports 47, 48 of the diaphragm pumping device 10 or other
kinds of pumping devices. The silencers 8 include a structure or
configuration identical to the housing 4 as those shown in FIGS.
5-8, except that the silencers 8 do not include the check valves
70, 71, 72, 73 engaged into the housing members 40. The silencers 8
are provided for allowing the fluid or liquid or air to flow into
or out of the ports 47, 48 of the housing 4 with a decreased
noise.
[0051] For example, the silencers 8 each may also include two
housing members 40 to be anchored or secured together, a partition
43 extended from the housing members 40 to separate the inner
portion of the silencer 8 into two chambers 44, 45 (FIGS. 7-8), and
preferably includes a narrowed neck portion 46 formed in a middle
portion of the chamber 44 thereof, one or more, such as two tubes
or ports 47 extended from such as the two housing members 40 and
communicating with the chamber 44 thereof, and another tube or port
48 extended from one of the housing members 40, and communicating
with the other chamber 45 thereof.
[0052] The silencers 8 each may also include two casings 50
oppositely protruded from the housing members 40 respectively and
having the partition 43 extended from the middle portions of the
casings 50 respectively, to have the casings 50 communicated with
the chambers 44, 45 of the silencer 8, and further includes two
holes 51, 52; 53, 54 formed in each of the casings 50, and located
in different side of the partition 43, and communicating with the
chambers 44, 45 of the silencer 8 respectively, and further
includes a number of cavities 55 formed in each of the casings 50
and arranged around the holes 51, 52; 53, 54 of the casings 50
respectively, and also communicating with the chambers 44, 45 of
the silencer 8 respectively.
[0053] In operation, as shown in FIGS. 7-8, the air or-fluid
flowing into or out of either of the ports 47, 48 of the silencer 8
may flow from one of the chambers 44, 45 of the silencer 8 through
the compartments 62 of the bladders 60 and then into the other
chambers 45, 44, of the silencer 8, such that the silencer 8 may be
used to reduce or to decrease the noises that may be generated by
various pumping devices. In addition, the flowing speed of the air
or fluid flowing out through the narrowed neck portion 46 may be
decreased such that the noises may further be reduced or decreased
by the silencer 8.
[0054] It is to be noted that the silencers 8 include a structure
or configuration identical to the housing 4 as those shown in FIGS.
5-8, such that the housing 4 as shown in FIGS. 5-8 may be used for
the pumping purposes as those shown in FIGS. 9 and 10, or for the
noise silencing purposes as those shown in FIGS. 1-4 and 11-13. It
is only required to engage the check valves 70, 71, 72, 73 into the
housing members 40 (FIGS. 9, 10) when the housing 4 is going to be
used for the pumping purposes, such that the manufacturing for the
silencers 8 and the pumping housing 4 may be simplified.
[0055] Accordingly, the diaphragm pumping device in accordance with
the present invention may be actuated or operated by electric
actuating device, and may be used for vacuuming or air pumping
purposes, and having one or more silencers for reducing noises that
may be generated by the pumping device.
[0056] Although this invention has been described with a certain
degree of particularity, it is to be understood that the present
disclosure has been made by way of example only and that numerous
changes in the detailed construction and the combination and
arrangement of-parts may be resorted to without departing from the
spirit and scope of the invention as hereinafter claimed.
* * * * *