close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2403602

код для вставки
July 9, 1946,
W. H. KlTTO
2,403,602
SUCTION CLEANER
Filed Jan. 28, 1944
4 Sheets-Sheet 1
y_.v..
` .~;l.
-. . .
INVENTOR.
William IZ Killa
July 9, 1946»
w. H. Kn'To
2,403,602
SUCTIQN CLEANER
4 sheets-sheet 2
l Filed Jan. 28, 1944
l
K
6.9
.'rNVENToR.
m’llialß Hl?illo
BY'
@SW
Patented July 9,1946 i
2,403,602' '
UNITED STATES PATENT
FFECE
2,403,602
SUCTION CLEANER
William H. Kitto, Greentown, Ohio, assigner to
The Hoover Company,‘North Canton, Ollio, a
corporation of Ohio
Application January 28, 1944, Serial No. 520,043
3 Claims.
(Cl. 18S-»57)
l
2.
The present invention relates to suction clean
Figure 4 is a partial section upon the line ti--d A
ers in general and more particularly to a suction
cleaner incorporating a dirt separator with auto
of Figure 2 and shows the pressure-responsive
means which initiate the filter-cleaning oper
matic cleaning features. More particularly the
invention comprises a suction cleaner of the type
ation;
'
`
Figure 5 is a view looking in the direction of
including an initial dirt separator and a iinal
dirt-separator in combination with means which
the arrows upon the line 5_5 of Figure 4 and
shows the pressure-controlled locking means "for
the stator;
automatically clean the final' dirt separator re
turning the collected foreign material to the in
Figure 6 is a section through the motor upon
.itial separator. Still more speciñcally the inven 10 the line 6-8 of Figure 1 and shows an end- view
of the motor field and armature;
Figure 7 is a diagrammatic view of the electri
cal circuit of the machine;
clean same.
.
Figure 8 is a view similar to Figure 1 of a ,
It is an object of the present invention to pro*l 15 second preferred embodiment of the invention.
vide a new and improved suction cleaner.. It is
In cleaners of the type to> which the present
' tion relatesto a new and novel nozzle-actuating
mechanism in a suction cleaner incorporating a
dirt collecting iilter and automatic means to
_ another object of the invention to provide a new
invention relates, to wit, suction cleaners in
and improved suction cleaner of the type in
corporating initial and final dirt separators and
automatic means to clean the final dirt sep
arator and return the collected material to the
initial dirt separator. A further object of the
invention is to provide a suction cleaner in
corporating a dirt separator and cleaning means
for that separator which are actuated -by new
and novel means. A still further object of the
invention is to provide a suction cleaner in which
a. dirt-collecting ñlter is cleaned by a movable
nozzle which is driven by the motor stator, the
motor armature being connected to the suction
creating means. Still another object of the in
vention is to provide a suction cleaner in which
cleaning air is _drawn~ through an initial sep
arator by suction-creating means which exhaust
clean air to a final dirt separator incorporating
a ñlter, the suction-creating means being driven
by the rotatable armature of a motor the-stator
of which propels the filter-cleaning’nozzle rela
tive to the ñlter. These and other more speciiic
objects will appear upon reading the following
»speciñcation and claims -and upon considering
corporating a dirt separator with means to re
in connection therewith the attached drawings
to which they relate.
'
Referring now to the drawings in which pre
ferred embodiments of the present invention are
disclosed:
_
Figure 41 is a longitudinal section of the cleaner
with the rear portion of the nozzle conduit shown
upon the line l-I of Figure 2 to illustrate the
gearing for driving the escapement mechanism;
move foreign material therefrom, the problem of20 actuating the separator~c1eaning means auto-l
matically and' at a desirable speed is a serious»
one. The normal suction-creating fan rotates.
at 10,000 R. P. M. or more and its driving motor
_is iixedly attached thereto. To actuate the .
25 cleaning means for the dirt separator from this
motor requires. some form of speed reduction
which will enable the älter-cleaning nozzle to
rotate at approximately 5A to 10 R. P. M., al-though slightly higher speeds are acceptable. Inl
the present invention the filter-cleaning nozzle
is driven -by the field, usually known as the
stator, of the motor which actuates the suction
creating fan unit.v The stator is normally fixed
in position but is rotatable during „the operation
35 of the älter-cleaning nozzle. Automatic meansl
are provided which initiate and end the oper-.
ation of the filter-cleaning nozzle.
ì
dust pan or container Il is formed fixedly upon
the removable end cap 6 and is removable there
with from the casing.
.
Figure 3 is a partial section upon the line 3~3
of Figure 2 and shows the solenoid-controlling
switch;~
‘
n
‘
'
-
.
_
to comprise a main-elongated cylindrical casing
I which is slidably carried byl side runners 2
andwhich is provided on »its top with a suitable
handle 3. Cylinder í~ is closed at its ends by
45' caps 4 and 6. the latter being sealed tothe end:
of casing I in air tight relationship by a seal
'l and lbeing provided with a suitable indented'
handle 8 which enables the operator to move
the cap lengthwise of the casing after the latch
50 ing means 9 have been manually released. A
Figure 2 is a vertical transverse section upon
the line 2-2 of Figure 1;
.
Returning now to the drawings a preferred
embodiment of the invention is illustrated in
40 Figures 1 to '1, inclusive. The cleaner is seen.
55'
The interior of casing l lis transversely divided
by three spaced walls- l2, I3- and i4, each'of the'
2,408,602
3
4
latter two walls being a double wall with slightly
cleaner end of a dusting tool unit when it is de- >
spaced sides.
'
` sired to use the machine asa'blower.
A truncated cone I6 extends forwardly from
wall I2 which is centrally apertured to form, with
the interior of a cylinder I1 extended between
walls I2 and I3, a whirl chamber I5 the inner end
of which is defined by a transverse wall I8.
Within the cylinder I1 and rearwardly of the wall
I8 is a stationary multi-vaned deilector I9 which
Within the dirt separator chamber 58, and rig
idly attached to the motor frame-casing 4I, is a
iilter-cleaning nozzle 66. A hollow conduit 61
extends from the nozzle 66 in the longitudinal
flector I9 suction-creating fans 22 and 23 are
carried by the extended end of a motor shaft 24,
the motor being positioned upon the opposite side
of the double wall I3 which forms the inner end
sleeve 1I cooperates with a seal 12 to prevent the
collection of foreign material upon the spring
and the bearing 68. The rearward extremity of
conduit 61 seats rotatably in a stationary conduit
13 which extends transversely to pass along the
top of the casing and to connect to the inlet 29
of the‘whirl chamber I5. A pivoted valve 14 inA
conduit 13 controls the flow of air through the
nozzle and the conduit.
axis of the motor and to a central aperture in the
double plate I4, being rotatably mounted in a
suitable bearing 68. A coil spring 69 surrounding
cooperates with the casing I1 to form a two stage lo' shaft 61 abuts the bearing 68 and a shoulder upon
the shaft to take up end play. An enclosing
fan .chamber 2I. Upon opposite sides of the de
of the ian chamber 2 l .
_
_
A port at 26, of a type adapted to seat re
movably a dusting tool hose 21 carrying a suit»
able nozzle 28 at its outer end, is connected by a
tangentially extending inlet conduit 29 to the
whirl chamber I5. The latter is itself open to
the first stage of the fan chamber 2l through an
elongated inlet 3I provided with a strainer 32 at
its outer end. The first stage of the fan chamber
connects through the centrally apertured deilec
tor I9 to the second stage which is provided with
a plurality of circumferential exhaust ports 33
opening into an enclosing circular conduit 34
leading to ports 36 in wall I3 in order that air
exhausted from the fan chamber may pass rear
lAs the nozzle 66 is iixedly connected to the
motor stator at the frame-casing 6I thereof it is
clear that both the stator and the nozzle must
rotate in order for the nozzle to contact the en
tire inner surface of the filter 51 which must be
cleaned from time to time. The normal driving
motor has its stator fixed but in the present in
stance the frame-casing 4I is rotatably mounted,
as described, at one end by the bearing di and at
30 the opposite end through‘the nozzle 66 and con
The driving motor for the suction-creating fans
22 and 23 is positioned rearwardly of the double
wall I3 with its shaft 24, being supported therein
by a bearing 38. The rearward extremity of shaft
24 is supported in a second bearing 39 carried by
duit 61 in the bearing 68. It is clear that in mo
tor operation the reactive forces present tend to
rotate the f‘leld and frame-casing fixed thereto
in one direction while the armature 42, together
with the fans 22 and 23 secured thereto, is urged
in the opposite direction. It is necessary. how
i the motor frame-casing 4I. The motor armature
ever, that the filter-cleaning nozzle rotate at a
and commutator 42 and 43, respectively, are of
very slow speed and that this rotation take place
only when it is desired to clean the filter. To
provide this operation the following mechanism
is provided.
wardly therethrough.
course fixed upon the shaft 24 and rotate with
it while the motor field or stator 44 and com
. mutator brushes 46 Vare carried by the frame.
casing 4I which is itself‘rotatably mounted in a.
compound bearing structure 41 carried by the
rearward face of the wall I3. «As the motor field
44 is mounted-for rotation it is necessary to pro
vide a pair of stationary slip rings 48 and a pair
of cooperating brushes 49 on the field. The rings
are carried by an insulating plate 5I fixed to the
wall I3 and are supplied with current through
leads 52 which extend rearwardly along the un
derside of the main casing I to connect to _a man
ually operable switch 53 which is itself connected
to the incoming power leads 54. The electrical
circuit of the motor is illustrated in Figure 7 and
will be discussed later, it being sumcient _here to
point out that it is capable of giving two speeds
of rotation and is controlled by a switch 50 car
ried by and rotatable with frame-casing 4I,
Spaced concentrically within the main casing I
A gear 11 is keyed to hollow shaft 61 inside '
the double wall I 4 and is rotatable with the nozzle
66. In mesh with the gear 11 is a second small
dlameter gear 18 keyed to a shaft 18 rotatable in
bearings 80 and 8| in the sides of the double wall
I4 and extended rearwardly from that wall to
carry flxedly a crank arm 82. Crank arm 82
pivotally connects to a link 83 which at its c_‘po
site end pivotally connects to a second crank arm
84, as is clearly illustrated in Figure 2. Crank
arm 84 is keyed to a shaft 86 which ñxedly carries
-a valve element 81 formed with a small aperture
88 at a midpoint and movable angularly within
a casing 89 with the walls of which it makes
substantially sealing contact. - Casing 89 is flxedly
mounted on the rear face of double wall I4, is
fluid and air tight, and is adapted to contain
either a fiuid or air, to provide a resistance to
and carried at one end by an inwardly-extending 60 thearcuate movement of the flat valve 81. The
valve Velement and its casing constitute an escape
collar 56 adjacent wall I3 and at its opposite end
ment which limits the speed of rotation of the
upon a shoulder on the double wall I4 is a cylin
motor stator and nozzle 66. .The relationships
drical filter 51. The chamber 58 within the filter
of the crank arms 82 and 84 and the'link 83 is
51 in which is located the driving motor may be
referred to as the final filter chamber or dirt 65 such that the crank arm s2 rotates continuously
during the rotation of the nozzle while the crank
separator chamber. The chamber immediately
arm 84 which is flxedly connected to the valve
outside thereof is known as the discharge cham
81 moves in an arcuate path between the limits
ber and bears the reference charactel` 59. Filter
shown in dotted lines in Figure 2. Clearly the
chamber 58 is connected to the exhaust ports 33
of the fan chamber by the ports 36 and ring con 70 selection of the gear ratio and of the size of the
aperture 88 will determine the exact load placed
duit 34, while discharge chamber 59 is open
upon the motor stator and so will determine its
through ports 6I in the double wall I4 to the space
rotational speed when released.
between that wall and the rear cover 4. An ex
It is not desired that the filter-cleaning nozzle
haust port 62, similar to intake port 26 is formed
in cover 4 and is adapted to receive and seat the 15 66 operate at all times but instead only when the
2,403,608
7
.
8
,
i
_
plished merely by releasing manually the latch
is itself immovably mounted at its forward end
upon the wall |3. Casing |26 is shaped similarly
to the motor which it encloses and is provided in
9, of which there may be one or more and pulling
its rearward wall with a bearing |21 which ro
From time to time it is necessary for the dirt
container II to be emptied and this is accom
the end plate 6 longitudinally outward by the use
of the depressed handle 8. After being removed
tatably `>supports the extended end of the motor
the foreign material is readily emptied from the
shaft 24.
The filter-cleaning nozzle 66 is rotatably sup
dirt container || in an obvious manner. There
ported at the double wall I4 as in the first em
bodiment but at its side adjacent the motor in
again ready> for operation.
10 stead of being flxedly connected to the frame
casing 4| is formed with an integral cylindrical
Attention is directed to a reñnement com
cup portion |28 which is rotatably mounted upon
prising the means by which the speed of rotation
a bearing |29 carried by an axially projecting
of the armature ' 42 is increased during the
neck |3| formed upon the supporting housing.y
operation of the ñlter-cleaning nozzle in order
|26.
that the suction-creating fans 22 and 23 can
As the motor frame-casing 4I is not fixedly
rotate at higher speed to create an increased
connected to the filter-cleaning nozzle which it
suction in order tha-t the cleaning effectiveness
is intended to drive means must be provided to
of the dusting tool nozzle 28 willnot be reduced.
transmit the reactive torque of the frame-casing
To accomplish this result one Winding of the
field 44 is divided, as clearly illustrated in Figure 20 to the nozzle. These driving means comprise a
gear |32 rotatable with the frame-casing which
7, the leads ||| therefrom passing through a two
meshes with a relatively large diameter gear |33
position switch 50 to which is connected the lead
fixed upon a shaft |34. Shaft |34 is itself rotat
||4 leading to the brush 49 riding upon the slip
ably mounted in bearings |36 and |31 supported
>ring 48. The second slip ring 48 contacts a
second brush 49 _to which connects the lead |I3 25 respectively in a bracket |38 and in the rear Iwall
of the housing |26. At its rearward end shaft
to the opposite side of the field 44. The stator
|34 carries a second gear |39 which meshes with
carried switch 58 includes a spring-biased actu
a final gear | 4| iixedly secured to the outer sur
ating element I|_2 normally held in the full line
face of the cup |26 on the nozzle 66. Through
position illustrated in Figure 7 in which the
after the container is replaced and the machine is
. entire motor ñeld is energized. Element I I2 is 30 the gear train described rotation of the frame
casing 4| will be transmitted at greatly reduced
positioned by means of a fixed abutment IIS so
located below the motor as to contact the element
|I2 when the stator is held locked. Uponthe
nozzle being released by the movement of the
lock lever 96, however. the motor stator begins
to rotate and switch element ||2 moves from the
abutment IIB and immediately thereafter iiies
into its opposite position shown in dotted lines in
Figure '7. In this second position part of the
field winding is cut out and the motor rotates 40
at increased speed as do the fans 22 and 23. At
the end of the filter-cleaning operation the
stator again takes its original fixed position as
but one stop pin 8l is present upon the gear 11.
In this position the abutment IIB again returns 45
the switch to its full ñeld position.
Referring now to Figure 8 a second preferred
embodiment of the invention is illustrated which
speed to the nozzle with a r'esulting increase in
the reaction torque on the nozzle.
The speed-controlling means described in con
nection with the first embodiment comprising the
escapement 85|> and its drive means are as illus
trated in the first embodiment. Likewise the
electrical control for this second embodiment
and the actuation of the butteriiy valve 14 remain
unchanged.
The operation of the second embodiment of the
invention is believed to be clear, lit being neces
sary to point out only that rather than rotating
?lxedly with the motor frame-casing 4| the nozzle
66 rotates at a reduced speed being connected to
the frame-casing through the reduction gearing
described. The fixed connection of the frame
casing and the nozzle of the first embodiment is
replaced by the presence of a housing |26upon
is distinguished from the ñrst embodiment pri
marily in that gearing has been provided between 50 which both the frame-casing 4| and the nozzle
66 are rotatably mounted.
the motor stator and particularly the frame
casing 4| `mand the filter-»cleaning nozzle 66 in
order to increase the reaction torque acting upon
the nozzle. To accomplish this result certain
structural changes have been embodied which
will be described. it being understood that in
other respects the construction is like in the ñrst
described embodiment.
In the second embodiment of the invention the
motor frame-casing 4| is provided at its forward
I claim:
`
1. In a suction cleaner of the type having an
initial dirt separator, a suction-creating fan unit
to draw air into and through said initial sepa
rator, and a final dirt separator to receive air ex
hausted from said fan unit; a motor to drive said
fan unit including a plurality of individually ro
tatable electric-current-carrying parts, one of
said rotatable parts being connected to said fan
end with a forward wall |2I which carries an 60 unit to actuate same, and cleaning means for
said final dirt separator connected to a second ro
insulating block |22 in which the ñeld brushes
tatable part of said motor- and actuated thereby.
Ml4 are mounted. The two speed swìtch'äß is
2. In a suction cleaner of the type having an
also mounted on the motor wall |2I. At its
initial dirt separator, a suction-creating fan unit
center wall I2| -is provided with an axially 65 to draw air into and through said initial sepa
extending sleeve portion which rides upon a
rator, and a iinal dirt separator to receive'air
bearing |23 carried by a projecting' sleeve |24 on
exhausted from said fan unit. a motor to drive
the casing of bearing 38 in wall I3 and in which
said fan unit including a rotor and a stator, said
motor shaft 24 rotates. .The motor stator does
rotor being connected to said 'fan unit in driving
not rotate at a very high rate of speed and 70 relationship, means mounting said stator for ro
inexpensive bearing mountings are suitable.
tation, and a cleaning element movable with re
In the first embodiment the rearward end of
the motor frame-casing `4| was >fixed to the rof
tatable nozzle 66 but in the' present embodiment
an enclosing iixed casing |26 is provided which
said stator and driven thereby.
spect to said final separator and connected to
-
3. In a suction cleaner'of the type having an
initial dirt separator, a, suction-creating fan unit
2,403,60ß
to draw air into and through said initial sepa
rator, and a ñnal dirt separator to receive air
exhausted from said fan unit and including an
lair permeable iilter element; a motor to drive
said fan unit including a rotor and a stator, said
rotor being connected to said fan unit in driving
relationship, means mounting said stator for ro
tation, releasable means normally- retaining said
stator against rotation, and a ñlter-cleaning noz
zle connected to said-initial separator and driven 10
'
by said stator and movable relative to said ñlter
to remove foreign material therefrom.
motor to drive said fan unit including a rotor
connected directly thereto and a' stator, means
rotatably mounting said stator, a ñlter~cleaning
nozzle fixed to lsaid stator and rotatable there
with, means to control the speed of rotation of
said stator and nozzle, and means including pres
sure-operated means exposed to the air pressure
acting on said filter to release and lock said sta
tor and nozzle.
n
-~
7. In a suction cleaner of the type having an
initial dirt separator, a suction-'creating fan unit
to draw air into and through said initial separa
tor, and a ñnal dirt separator to receive air ex
hausted from said fan unit and including an air
permeable filter element; a motor to drive said
»
4. In a suction cleaner of the type having an
initial dirt separator, a suction-creating fan unit
to draw air into and through said initial sepa
rator, and'a ñnal dirt separator to receive air ex
hausted from said fan unit and including an air
fan unit including a rotor and a stator, said- ro- 1
tor being connected to said fan unit in driving
permeable filter elementça motor to drive said „
relationship, means mounting said stator for ro
fan unit including a current-carrying rotor and
tation, a älter-cleaning nozzle, means mount
a current-carrying stator, said rotor being con- ` ing said nozzle for rotation relative to said ñlter,
nected to said fan unit in driving relationship, Y speed-reducing gear means connecting said sta
means mounting said stator for rotation, pres-`
tor to said nozzle, means to restrain rotation of
sure-operated means controlled bythe pressure in
said stator and said nozzle, pressure-operated
said final separator to lock said stator against ro
means exposed to the pressure acting on said ñl
tation and adapted to release said stator for rota~ 25 ter controlling -said last-mentioned means and
tion in the presence of a predetermined pressure
adapted to actuate same to release said stator
in said final separator, a illter-cleaning nozzle,
and nozzle in the »presence of a predetermined
movably mounted with respect to said ñlter and
pressure acting on said ñlter, and air-conducting
connected to said stator to be actuated thereby,
means to convey air and collected foreign ma
and 'means controlled by said pressure-operated
terial from said nozzle to said initialseparator.
means to connect said nozzle to said initial sepa
>8. In a suction -cleaner of the type having an
rator.
initial dirt separator, a suction-creating fan unit
5. In a suction cleaner of the type having an
connected to said initialseparator to draw air
initial dirt separator, a suction-creating fan unit
thereinto' and to exhaust it therefrom, and a iinal
to draw air into and through said initial separa 35 dirt separator to receive air exhausted from said
tor, and a iinal dirt separator to receive air ex
fan unit; a two speed motor includingY a rotor
hausted from said fan unit and including an air
and a stator, said rotor being directly connected
permeable ñlter element; a motor to drive said
to said fan unit to drive same, means rotatably
mounting said stator, a älter-cleaning nozzle con
nected to said stator and _driven thereby relative
to saidñnal dirt separator to collect foreign ma
terial therefrom, air-conducting means connect
ing said nozzle to said >initial separator, means
fan unit including a current-carrying rotor and
a current-carrying stator, said rotor being con
nected to said fan unit in driving relationship,
means mounting said stator for rotation, a iilter
cleaning nozzle ñxedly mounted on said stator
and rotatable therewith and over said filter ele
ment, and air-conducting means connecting said
nozzle to said initial dirt separator.
6. In a suction cleaner of the type having an
initial dirt separator, a suction-creating fan unit
to draw air into and through said initial'separa
tor, and a final dirt separator to receive air ex
hausted from said fan unit and including a cylin
drical air permeable filter arranged concentrical
ly with respect to the axis of said fan unit; a
normally locking said stator against rotation,
‘ pressure-responsive means controlled by the pres
50
sure acting on said final separator adapted to
release said locking means upon a predetermined
pressure existing in said iinal separator, and
means to increase the speed of rotation of said
motor upon the actuation oi' said pressure-respon
sive means.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 081 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа