BACKGROUND
1. Field
[0001] Embodiments of the present disclosure relate to a washing machine, and more particularly,
to a washing machine provided with a drain pump configured to pump the washing water
stored in a tub.
2. Description of the Related Art
[0002] A washing machine designed to wash laundry by use of electric power, in general,
includes a tub to accommodate a washing water, a rotating tub rotatably installed
at an inside the tub, a driving apparatus to rotate the rotating tub, a water supply
apparatus to supply water to an inside the tub, and a drain pump to forcedly drain
water in the tub.
[0003] In general, the drain pump includes a pump case provided with a washing water inlet
compartment to accommodate washing water and a drain pump compartment, and a pumping
motor installed at one side of the pump case. The interior of the pump case is provided
at an inside thereof with a pump filter to filter foreign substance contained in the
washing water. The drain pump compartment is provided with an impeller configured
to be rotated by the pumping motor.
[0004] When the impeller is rotated by the pumping motor, the washing water in the tub is
introduced into the washing water inlet compartment. The washing water introduced
into the washing water inlet compartment passes through the filter, and is withdrawn
into the drain pump compartment. The washing water reached to the drain pump compartment
is forcedly discharged to an outside the drain pump by the impeller.
[0005] During such a pumping process, air may be introduced into an inside the drain pump
together with the washing water. If the air is introduced into an inside the pump,
the performance of the impeller installed in the drain pump compartment may be degraded,
and thus a drain fault may occur or an abnormal noise may be generated.
[0006] In general, in order to discharge the air introduced into an inside the drain pump
to an outside, an air outlet port is provided. The air outlet port is connected to
the tub through a hose.
[0007] Accordingly, the air at an inside the pump is discharged to a side of the tub through
the air outlet port and the hose.
[0008] Since the region where air stays in the drain pump is an upper part of the drain
pump compartment, the position of the air outlet port is needed to be adjusted so
as to discharge the air.
[0009] In addition, there is a need for the air to be discharged to other side than the
tub provided at an upper side of the drain pump so as to enhance the efficiency of
discharging air.
[0010] EP 2 363 526 A2 discloses a washing machine and a corresponding drain pump. Air and wash water are
transported to the outside of the corresponding washing machine by a wash water outlet
port. An air discharge port is provided to discharge air contained in the drain pump
compartment to the outside. Corresponding air discharge port is provided below and
above a wash water suction port which is connected to the wash water outlet port.
[0011] US 2 873 598 A1 discloses a washing machine and a corresponding pump. An air outlet is provided on
an upper portion of the pump case for discharging air to the fill hose of the tub.
SUMMARY
[0012] It is an object of the present disclosure to provide a drain pump capable of easily
discharging air thereof to an outside, and a washing machine having the same.
[0013] The object is solved by the features of claim 1.
[0014] Additional aspects of the disclosure will be set forth in part in the description
which follows and, in part, will be apparent from the description, or may be learned
by practice of the disclosure.
[0015] The air passage may include a rubber hose.
[0016] The air inlet port may be integrally formed with the drain line.
[0017] The air inlet port may be separately formed with the drain line and coupled to the
drain line.
[0018] According to the invention, the drain line includes a drain passage connected to
the drain pump compartment, and an air passage connected to the air outlet port.
[0019] The air passage may be branched from the drain passage.
[0020] The air passage may be integrally formed with the drain passage.
[0021] The air passage may have a diameter smaller than a diameter of the drain passage.
[0022] The drain line may include an outlet port protruded at the pump case, and a drain
hose including one end connected to the outlet port and the other end extended to
an outside.
[0023] The drain hose may include an air inlet port protruded at the drain hose, wherein
the air passage may have one end connected to the air outlet port and the other end
connected to the air inlet port.
[0024] The other end of the air passage may be integrally formed with the drain hose.
[0025] The drain pump may include an air outlet port protruded upward, at the drain pump,
and the drain line comprises an air inlet port protruded upward, at the drain line,
wherein one end of the air passage may be connected to the air outlet port and the
other end of the air passage is connected to the air inlet port.
[0026] The drain pump may include an air outlet port protruded upward, at the drain pump,
wherein one end of the air passage is connected to the air outlet port and the other
end of the air passage is integrally formed with the drain line.
[0027] According to the invention, the air outlet port is formed at an upper side of the
drain pump compartment, and the air outlet port is connected to the drain hose to
easily remove the air in the drain pump.
BRIEF DESCRIPTION OF THE DRAWINGS
[0028] These and/or other aspects of the disclosure will become apparent and more readily
appreciated from the following description of embodiments, taken in conjunction with
the accompanying drawings of which:
FIG. 1 is a cross-sectional view illustrating the configuration of a washing machine
in accordance with an embodiment of the present disclosure.
FIG. 2 is a perspective view illustrating a drain pump and a drain hose of the washing
machine in accordance with an embodiment of the present disclosure.
FIG. 3 is a perspective view illustrating the drain pump of the washing machine of
FIG. 1.
FIG. 4 is a view illustrating a pump case of the drain pump of FIG. 3.
FIG. 5 is a view illustrating the drain hose of FIG. 3.
FIG. 6 is a cross-sectional view illustrating the pump case taken along line I-I.
FIG. 7 is a perspective view illustrating a drain pump in accordance with another
embodiment of the present disclosure.
DETAILED DESCRIPTION
[0029] Reference will now be made in detail to embodiments of the present disclosure, examples
of which are illustrated in the accompanying drawings, wherein like reference numerals
refer to like elements throughout.
[0030] Referring to FIGS. 1 and 2, a washing machine 1 includes a cabinet 10 forming the
exterior of the washing machine 1, a tub 20 disposed at an inside the cabinet 10,
a rotating tub 30 rotatably disposed at the tub 20, and a motor 40 to drive the rotating
tub 30.
[0031] The cabinet 10 includes a plurality of frames 10a, 10b, and 10c including a front
side frame 10a forming the front surface of the cabinet 10, lateral side frames 10c
forming the lateral surfaces and the rear surface of the cabinet 10, and a lower side
frame 10b framing the lower surface of the cabinet 10.
[0032] The lower side frame 10b is provided at a front side thereof with a predetermined
portion that is bent upward to be coupled to the front side frame 10a.
[0033] The cabinet 10 is provided at a front surface thereof with an inlet 11 through which
a laundry is input into the rotating tub 30. The inlet 11 is open/closed by the door
12 installed at the front surface of the cabinet 10.
[0034] The tub 20 is supported by a damper 25. The damper 25 connects the bottom surface
of an inner side of the cabinet 10 to an outer surface of the tub 20.
[0035] A water supply pipe 50 to supply the tub 20 with washing water is installed at an
upper portion of the tub 20. One side of the water supply pipe 50 is connected to
an outside water supply source (not shown), and the other side of the water supply
pipe 50 is connected to a detergent dispensing apparatus 52.
[0036] The detergent dispensing apparatus 52 is connected to the tub 20 through a connection
pipe 54. The water supplied through the water supply pipe 50 is supplied to an inside
the tub 20 together with detergent via the detergent dispensing apparatus 52.
[0037] The rotating tub 30 includes a cylindrical part 31, a front side panel 32 disposed
at a front side of the cylindrical part 31, and a rear side panel 33 disposed at a
rear side of the cylindrical part 31. The front side panel 32 has an opening 32a through
which a laundry is input/withdrawn. The rear side panel 33 is connected to a driving
shaft 41 configured to transmit a driving force of the motor 40.
[0038] A plurality of through-holes 34 is formed through a circumference of the rotating
tub 30 for circulation of the washing water, so that an inner space of the rotating
tub 30 communicates with an inner space of the tub 20.
[0039] A plurality of lifters 35 is installed at an inner circumferential surface of the
rotating tub 30 to enable the ascending and descending of laundry when the rotating
tub 30 rotates.
[0040] The driving shaft 41 has one end connected to the rear side panel 33 of the rotating
tub 30, and the other end extended to an outside the tub 20. When the motor 40 drives
the driving shaft 41, the rotating tub 30 connected to the driving shaft 41 rotates
about the driving shaft 41.
[0041] A bearing housing 42 rotatably supporting the driving shaft 41 is installed at a
rear wall of the tub 20. The bearing housing 42 may be formed using an aluminum alloy.
The bearing housing 42 may be inserted into the rear wall of the tub 20 when the tub
20 is formed through an injection molding. A plurality of bearings 43 is installed
between the bearing housing 42 and the driving shaft 41 to enable a smooth rotation
of the driving shaft 41.
[0042] During a washing cycle, the motor 40 rotates the rotating tub 30 in reverse/ forward
directions at a low speed. As the rising and falling of the laundry at an inside the
rotating tub 30 is repeated, the dirt on the laundry is removed.
[0043] During a spin-dry cycle, the motor 40 rotates the rotating tub 30 in one direction
at a high speed, so that water is separated from the laundry by a centrifugal force
acting on the laundry.
[0044] A drain pump 100 to pump the washing water stored in the tub 20 is installed at a
lower portion at an inside of the cabinet 10. The drain pump 100 is connected to the
outside through a drain hose 60.
[0045] The drain pump 100 is exposed to the front surface of the cabinet 10 through a through-hole
13 that is provided at a portion where the protrusion of the lower side frame 10b
overlaps a lower end of the front side frame 10a.
[0046] The drain hose 60 is coupled to an inner side of the cabinet 10 by a hose wire 92
and a hose holder 91 while preventing the drain hose 60 from interfering with other
components at an inside the cabinet 10. The drain hose 61 is guided to an outside
by a hose guide 90.
[0047] FIG. 3 is a perspective view illustrating the drain pump of the washing machine of
FIG. 1. FIG. 4 is a view illustrating a pump case of the drain pump of FIG. 3. FIG.
5 is a view illustrating the drain hose of FIG. 3. FIG. 6 is a cross-sectional view
illustrating the pump case taken along line I-I. The pump case illustrated on the
FIG. 6 has the pump filter omitted therefrom.
[0048] Referring to FIGS. 3 to 6, a drain pump 100a includes a washing water inlet compartment
111, a pump case 110 including a drain pump compartment 120 and a bubble generating
compartment 130, and a pump filter 140 configured to be inserted into the washing
water inlet compartment 111. The drain pump compartment 120 and the bubble generating
compartment 130 are disposed opposite to each other while interposing the washing
water inlet compartment 111 thereinbetween.
[0049] A bubble generating motor 131 is disposed at a side of the pump case 110 adjacent
to the bubble generating compartment 130. A circulation impeller 132 is connected
to the bubble generating motor 131. The circulation impeller 132 is disposed at an
inside the bubble generating compartment 130.
[0050] The bubble generating compartment 130 is provided, at an upper portion of the bubble
generating compartment 130, with a circulation port 134 that protrudes upward to circulate
the washing water 20 to an inside of the tub 20. A circulation pipe 80 is connected
to the circulation port 134.
[0051] As the circulation impeller 132 is rotated by the bubble generating motor 131, the
washing water in the washing water inlet compartment 111 is drawn into the shaft direction.
Bubbles are generated by mixing air with washing water by the difference in pressure
in the bubble generating compartment 130 due to the pressure drop caused by the flowing
of washing water. The bubbles are introduced into the tub 20 through the circulation
port 134 and the circulation pipe 80 by the circulation impeller 132.
[0052] The pump filter 140 is mounted at the front surface of the washing water inlet compartment
111 to remove foreign substance on the washing water that is introduced into the tub
20.
[0053] The pump filter 140 is provided in the form of a cylinder having a hollowness, and
includes a head part 141 and a body part 145. If the pump filter 140 is mounted on
the pump case 110, the body part 145 of the pump filter 140 is accommodated at an
inside the washing water inlet compartment 111 of the pump case 110.
[0054] The head part 141 is provided at a lateral side thereof with a second screw thread
143 that is screwed to the pump case 110. The head part 141 is provided at a front
side thereof with a grip 142 that is grippable by a user to rotate the head part 141.
[0055] The washing water inlet compartment 111 is provided at a front side thereof with
an entry 116 into which the pump filter 140 is inserted. A rim of the entry 116 is
provided with a first screw thread 117 having a shape corresponding to the second
screw thread 143 of the pump filter 140.
[0056] The head part 141 of the pump filter 140 is exposed to the front surface of the cabinet
10 by the through-hole 13 that passes through the lower side frame 10b and the front
side frame 10a. A cover (not shown) to cover the through-hole 13 is coupled to the
front side frame 10a.
[0057] The user opens the cover (not shown) to expose the head part 141, and holds the grip
142 to rotate the head part 141 , thereby separating the pump filter 140 from the
drain pump 100a so as to replace or clean the pump filter 140.
[0058] The pump case 110 is coupled to a lower side frame 10b through a mount part 150 that
is formed at a lower portion of the pump case 110. As the mount part 150 is inserted
into a coupling groove 14 which is formed at a portion of the lower side frame 10b
corresponding to the mount part 150, the pump case 110 is coupled to the lower side
frame 10b.
[0059] Fastening holes 155 and 156 are formed at a lower portion of an outer side of the
bubble generating compartment 130 and the drain pump compartment 120 of the pump case
110 such that the pump case 110 is coupled to the protruding portion of the lower
side frame 10b. If a fastening member (not shown) is coupled to the fastening holes
155 and 156 through the protruding portion of the lower side frame 10b, the protruding
portion of the lower surface frame 10b is coupled to the pump case 110.
[0060] Water remaining in the pump case 110 is discharged through a residual water outlet
port 180 that is formed at a lower portion of the pump case 110. One end of a residual
water hose (not shown) is connected to the residual water outlet port 180, and the
other end of the residual water hose is exposed to the front surface of the cabinet
10 through the through-hole 13. Accordingly, a user removes the water remaining in
the pump case 110 by use of the residual water hose (not shown) exposed to the front
surface of the cabinet 10.
[0061] An inlet port 114 is provided on the washing water inlet compartment 111 while protruding
to the rear side of the washing water inlet compartment 111. The washing water inlet
compartment 111 communicates with the inlet port 114. A connection part connecting
the washing water inlet compartment 111 to the inlet port 114 has an inlet hole 115
that is configured to connect the washing water inlet compartment 111 to the inlet
port 114.
[0062] An inlet hose 70 is connected to the inlet port 114 such that the washing water in
the tub 20 is introduced to the washing water inlet compartment 111 by passing through
the inlet hose 70 and the inlet port 114 via the inlet hole 115.
[0063] An impeller 122 to forcedly draw the washing water in the washing water inlet compartment
111 and to discharge the drawn washing water, is installed in the drain pump compartment
120 of the pump case 110. The pumping motor 121 is connected to the impeller 122.
The impeller 122, which is rotated by the pumping motor 121, draws in the washing
water of the washing water inlet compartment 111 in the shaft direction, and discharges
the washing water in the radial direction.
[0064] A drain hose 60a is connected to the drain pump compartment 120 and configured to
guide and drain the washing water pumped by the impeller 122 to the outside the cabinet
10.
[0065] A first suction port 123 is formed between the drain pump compartment 120 and the
washing water inlet compartment 111, and serves as a passage, into which the washing
water in the washing water inlet compartment 111 is drawn.
[0066] A second suction port 133 is formed between the bubble generating compartment 130
and the washing water inlet compartment 111, and serves as a passage, into which the
washing water in the washing water inlet compartment 111 is drawn.
[0067] An outlet port 124 to discharge the washing water pumped by the impeller 122 is formed
on the drain pump compartment 120 while extending to the rear side of the drain pump
compartment 120.
[0068] The drain hose 60a is connected to the outlet port 124.
[0069] The outlet port 124 and the drain hose 60a form a drain line configured to guide
the washing water from the drain pump compartment 120 to an outside.
[0070] In order to remove the air, which is generated by collision between the impeller
122 and the washing water, and the air, which is introduced when the washing water
is introduced into the washing water inlet compartment 111, from the pump case 110,
an air outlet port 160 is formed on the drain pump compartment 120 while protruding
upward.
[0071] The washing water introduced into the washing water inlet compartment 11 naturally
moves. However, the washing water, after passing through the washing water inlet compartment
111 and the drain pump compartment 120, is drained through the outlet port 124 and
the drain hose 60a while being forcedly discharged by the impeller 122 at a high speed.
Accordingly, the amount of washing water being discharged is larger than that of washing
water being introduced.
[0072] Due to the difference in amount between the washing water being introduced and the
washing water being discharged, the upper portion of the drain pump compartment 120
is filled with a larger amount of air than the washing water inlet compartment 111
is.
[0073] Further, the velocity of the washing water is increased by the impeller rotating
at a high speed, and the pressure of the drain pump compartment 120 is decreased.
If the pressure falls below the saturated vapor pressure of the washing water, cavitation
phenomenon that generates air bubbles dissolved in the washing water occurs. The air
generated in the drain pump compartment 120 fills the drain pump compartment 120.
[0074] The air filled in the upper portion of the drain pump compartment 120 causes an abnormal
oscillation and noise, and degrades the function of the drain pump 100a. Accordingly,
there is a need for removing the air. By forming the air outlet port 160 at the upper
portion of the drain pump compartment 120 filled with the air, the discharging of
air is effectively achieved.
[0075] One end of the drain hose 60a, as described above, is guided to an outside the cabinet
10 by the hose guide 90. The other end of the drain hose 60a is provided with a connection
part 62a configured to connect the other end of the drain hose 60a to the outlet port
124.
[0076] An air inlet port 61 a is formed while protruding at the drain hose 60a, and the
air outlet port 160 is connected to the air inlet port 61 a through an air passage
170a. One end of the air passage 170a is connected to the air outlet port 160, and
the other end of the air passage 170a is connected to the air inlet port 160.
[0077] The air inlet port 61 a according to an embodiment of the present disclosure has
been described as being formed on the drain hose 60a. However, the aspect of the present
disclosure is not limited thereto, and the air inlet port 61 a may be formed on the
connection part 62a or the air outlet port 160.
[0078] Hereinafter, the flow of the washing water and the air will be described.
[0079] As the impeller 122 rotates, the washing water moves from the washing water inlet
compartment 111 to the drain pump compartment 120 via the first suction port 123.
Thereafter, the washing water, by passing through an outlet hole 125 of the drain
pump compartment 120, is discharged to an outside the cabinet 10 via the outlet port
124 and the drain hose 60a.
[0080] The washing water in the drain pump compartment 120 is moved to the outlet port 124
and the drain hose 60a by the impeller 122 at a high speed. In this case, the washing
water flowing from the washing water inlet compartment 111 to the drain pump compartment
120, that is, the washing water passing through the first suction port 123, flows
at a velocity higher than that of the washing water passing through the outlet port
124 and the drain hose 60a.
[0081] Since the pump case 110 is not substantially different in height from the drain hose
60a, when the heights of the pump case 110 and the drain hose 60a are assumed to be
same, the pressure of the drain hose 60a is lower than the pressure of the first suction
port 123 according to Bernoulli's principle.
[0082] That is, the pressure of the air outlet port 160 is higher than the pressure of the
air inlet port 61a.
[0083] As described above, the difference in amount between the washing water being discharged
and the washing water being introduced as well as the cavitation phenomenon cause
the upper portion of the drain pump compartment 120 to be filled with air. The difference
in pressure allows the air to flow from the air outlet port 160 to the air inlet port
61 a through the air passage 170a.
[0084] According to the above structure as such, the air in the drain pump 100a is naturally
discharged to an outside the cabinet 10 through the drain hose 60a.
[0085] Therefore, the air is removed from the drain pump 100a, in particular, from the drain
pump compartment 120, so that the vibration and noise are removed, and the efficiency
of the drain pump is enhanced.
[0086] FIG. 7 is a perspective view illustrating a drain pump in accordance with another
embodiment of the present disclosure.
[0087] The description of the same reference numerals will be assigned to elements identical
to the elements according to the previous embodiment, and description thereof will
be omitted.
[0088] Referring to FIG. 7, a drain pump 100b includes a washing water inlet compartment
(111 in FIG. 6), a pump case 110 provided with a drain pump compartment (120 in FIG.
6) and a bubble generating compartment (130 in FIG. 6), and a pump filter 140 inserted
into the washing water inlet compartment 111.
[0089] The bubble generating motor 131 is connected to one end of the pump case 110 including
the bubble generating compartment 130. The circulation port 134 is formed at the upper
portion of the bubble generating compartment 130. The circulation pipe 80 is connected
to the circulation port 134.
[0090] The pump filter 140 is inserted into the front surface of the drain pump 100b.
[0091] The washing inlet compartment (111 in FIG. 6) is formed in the center at an inside
of the drain pump 100b. The inlet port 114 is provided on the washing water inlet
compartment 111 while protruding to the rear side of the washing water inlet compartment
111. An inlet hose 70 is connected to the inlet port 114 such that the washing water
in the tub 20 is introduced to the washing water inlet compartment 111. One end of
the inlet hose 70 is connected to the inlet port 114 and the other end of the inlet
hose 70 is connected to the tub (20 in FIG. 1).
[0092] The washing water in the tub 20 is introduced into the washing water inlet compartment
111 in the drain pump 100b through the inlet hose 70.
[0093] The drain pump compartment (120 in FIG. 6) is formed at the opposite end of the pump
case 110 including the bubble generating motor 131. The pumping motor 121 provided
with the impeller (122 in FIG. 3) is mounted on the drain pump compartment 120.
[0094] As described above, the upper portion of the inner side of the drain pump compartment
120 is filled with air. Accordingly, the air outlet port 160 is provided while protruding
at the upper portion of the outer side of the drain pump compartment 120 to discharge
air.
[0095] A drain hose 60b is provided with a connection part 62b configured to connect to
the outlet port 124 that protrudes to the rear side of the pump case 110.
[0096] An air passage 170b branches from the drain hose 60b while being integrally formed
with the drain hose 60b. The air passage 170b is connected to the air outlet port
160.
[0097] As described above, since the velocity of the washing water at the drain hose 60b
is higher than that of the washing water in the drain pump compartment120, the pressure
in the pump case 110 is higher than the pressure in the drain hose 60b according to
Bernoulli's principle.
[0098] Accordingly, the air in the upper portion of the drain pump compartment 120 moves
along from the air outlet port 160 to the drain hose 60b. The air reached to drain
hose 60b is discharged to an outside of the cabinet 10 together with the washing water.
[0099] As the air in the pump case 110 is reduced, the vibration and noise occurring in
the drain pump is reduced, and the efficiency of the drain pump is enhanced.
[0100] Although a few embodiments of the present disclosure have been shown and described,
it would be appreciated by those skilled in the art that changes may be made in these
embodiments without departing from the principles and spirit of the disclosure, the
scope of which is defined in the claims and their equivalents.
1. A washing machine (1) comprising:
a tub (20) configured to accommodate washing water therein; and
a drain pump (100, 100a, 100b) configured to pump the washing water in the tub (20),
wherein the drain pump comprises:
a washing water inlet compartment (111);
a drain pump compartment (120) configured to pump washing water contained in the washing
water inlet compartment to an outside;
a pumping motor (121) coupled to the drain pump compartment (120);
a suction port (123) provided between the washing water inlet compartment (111) and
the drain pump compartment (120) to move the washing water from the washing water
inlet compartment to the drain pump compartment; and
a drain line (60, 60a, 60b) connecting from the drain pump compartment (120) to an
outside to discharge the washing water; and
an air outlet port (160) provided on an upper portion of the drain pump compartment
(120) to discharge air contained in the drain pump compartment to an outside; characterized by
an air inlet port (61 a) provided on the drain line, and
an air passage (170a,b) connecting the air outlet port (160) to the air inlet port
(61 a) such that air flows from the air outlet port to the air inlet port due to the
difference in pressure between the air outlet port and the air inlet port caused by
a velocity of the washing water at the drain hose (60b) being higher than he velocity
of the washing water in the drain pump compartment (120) and thus the pressure in
the pump case (110) being higher than the pressure in the drain hose (60b).
2. The washing machine of claim 1, wherein the air outlet port (160) protrudes at the
upper portion of the drain pump compartment (120).
3. The washing machine of claim 1, wherein the air passage (170a,b) comprises a rubber
hose.
4. The washing machine of claim 1, wherein the air inlet port (61a) is integrally formed
with the drain line (60a,b).
5. The washing machine of claim 1, wherein the air inlet port (61 a) is separately formed
with the drain line and coupled to the drain line.
6. The washing machine of claim 1, wherein the drain line (60, 60a, 60b) comprises a
drain passage connected to the drain pump compartment (120).
7. The washing machine of claim 6, wherein the air passage (170a, b) is branched from
the drain passage.
8. The washing machine of claim 6, wherein the air passage (170b) is integrally formed
with the drain passage (60b).
9. The washing machine of claim 6, wherein the air passage (170a, b) has a diameter smaller
than a diameter of the drain passage.
10. The washing machine of claim 1, wherein the drain line comprises an outlet port (124)
protruding at the pump case, and a drain hose (60a, b) having one end connected to
the outlet port and the other end extended to an outside.
1. Waschmaschine (1), die umfasst:
eine Wanne (20), die konfiguriert ist, um darin Waschwasser aufzunehmen, und
eine Ablaufpumpe (100, 100a, 100b), die konfiguriert ist, um das Waschwasser aus der
Wanne (20) zu pumpen,
wobei die Ablaufpumpe umfasst:
einen Waschwasser-Einlassteil (111),
einen Ablaufpumpenteil (120), der konfiguriert ist, um in dem Waschwasser-Einlassteil
enthaltenes Waschwasser nach außen nach außen zu pumpen,
einen Pumpmotor (121), der mit dem Ablaufpumpenteil (120) gekoppelt ist,
einen Ansaugstutzen (123), der zwischen dem Waschwasser-Einlassteil (111) und dem
Ablaufpumpenteil (120) vorgesehen ist, um das Waschwasser aus dem Waschwasser-Einlassteil
zu dem Ablaufpumpenteil zu bewegen,
eine Ablaufleitung (60, 60a, 60b), die von dem Ablaufpumpenteil (120) nach außen führt,
um das Waschwasser auszuführen, und
einen Luftauslassstutzen (160), der an einem oberen Teil des Ablaufpumpenteils (120)
vorgesehen ist, um in dem Ablaufpumpenteil enthaltene Luft nach außen abzulassen,
gekennzeichnet durch:
einen Lufteinlassstutzen (61 a), der an der Ablaufleitung vorgesehen ist, und
einen Luftdurchgang (170a,b), der den Luftauslassstutzen (160) mit dem Lufteinlassstutzen
(61 a) verbindet, sodass Luft von dem Luftauslassstutzen zu dem Lufteinlassstutzen
aufgrund einer Druckdifferenz zwischen dem Luftauslassstutzen und dem Lufteinlassstutzen
fließt, die dadurch verursacht wird, dass die Geschwindigkeit des Waschwassers an dem Ablaufschlauch
(60b) höher ist als die Geschwindigkeit des Waschwassers in dem Ablaufpumpenteil (120),
sodass also der Druck in dem Pumpengehäuse (110) höher ist als der Druck in dem Ablaufschlauch
(60b).
2. Waschmaschine nach Anspruch 1, wobei der Luftauslassstutzen (160) an dem oberen Teil
des Ablaufpumpenteils (120) vorsteht.
3. Waschmaschine nach Anspruch 1, wobei der Luftdurchgang (170a,b) einen Gummischlauch
umfasst.
4. Waschmaschine nach Anspruch 1, wobei der Lufteinlassstutzen (61a) einstückig mit der
Ablaufleitung (60a,b) ausgebildet ist.
5. Waschmaschine nach Anspruch 1, wobei der Lufteinlassstutzen (61 a) separat zu der
Ablaufleitung ausgebildet und mit der Ablaufleitung gekoppelt ist.
6. Waschmaschine nach Anspruch 1, wobei die Ablaufleitung (60, 60a, 60b) einen Ablaufdurchgang
umfasst, der mit dem Ablaufpumpenteil (120) verbunden ist
7. Waschmaschine nach Anspruch 6, wobei der Luftdurchgang (170a,b) von dem Ablaufdurchgang
verzweigt.
8. Waschmaschine nach Anspruch 6, wobei der Luftdurchgang (170b) einstückig mit dem Ablaufdurchgang
(60b) ausgebildet ist.
9. Waschmaschine nach Anspruch 6, wobei der Luftdurchgang (170a,b) einen Durchmesser
aufweist, der kleiner als der Durchmesser des Ablaufdurchgangs ist.
10. Waschmaschine nach Anspruch 1, wobei die Ablaufleitung einen Auslassstutzen (124),
der an dem Pumpengehäuse vorsteht, und einen Ablaufschlauch (60a,b), dessen eines
Ende mit dem Auslassstutzen verbunden ist und dessen anderes Ende sich nach außen
erstreckt, umfasst.
1. Machine à laver (1) comprenant :
une cuve (20) configurée pour recevoir de l'eau de lavage ; et
une pompe de drainage (100, 100a,100b) configurée pour pomper l'eau de lavage dans
la cuve (20),
dans laquelle la pompe de drainage comprend :
un compartiment d'entrée d'eau de lavage (111) ;
un compartiment de pompe de drainage (120) configuré pour pomper de l'eau de lavage
contenue dans le compartiment d'entrée d'eau de lavage vers l'extérieur ;
un moteur de pompage (121) couplé au compartiment de pompe de drainage (120) ;
un orifice d'aspiration (123) pourvu entre le compartiment d'entrée d'eau de lavage
(111) et le compartiment de pompe de drainage (120) pour déplacer l'eau de lavage
depuis le compartiment d'entrée d'eau de lavage vers le compartiment de pompe de drainage
; et
une ligne de drainage (60, 60a, 60b) qui connecte le compartiment de pompe de drainage
(120) à l'extérieur pour décharger l'eau de lavage ; et
un port de sortie d'air (160) pourvu sur une portion supérieure du compartiment de
pompe de drainage (120) pour décharger l'air contenu dans le compartiment de pompe
de drainage vers l'extérieur ;
caractérisée par
un port d'entrée d'air (61a) pourvu sur la ligne de drainage, et
un passage d'air (170a,b) qui connecte le port de sortie d'air (160) au port d'entrée
d'air (61a) de telle sorte que de l'air s'écoule depuis le port de sortie d'air vers
le port d'entrée d'air du fait de la différence de pression entre le port de sortie
d'air et le port d'entrée d'air provoquée par le fait que la vitesse de l'eau de lavage
dans le tuyau de drainage (60b) est supérieure à la vitesse de l'eau de lavage dans
le compartiment de pompe de drainage (120) et par conséquent la pression dans le boîtier
de pompe (110) est supérieure à la pression dans le tuyau de drainage (60b).
2. Machine à laver selon la revendication 1, dans laquelle le port de sortie d'air (160)
ressort de la portion supérieure du compartiment de pompe de drainage (120).
3. Machine à laver selon la revendication 1, dans laquelle le passage d'air (170a,b)
comprend un tuyau en caoutchouc.
4. Machine à laver selon la revendication 1, dans laquelle le port d'entrée d'air (61a)
est formé intégralement avec la ligne de drainage (60a,b).
5. Machine à laver selon la revendication 1, dans laquelle le port d'entrée d'air (61a)
est formé séparément de la ligne de drainage et couplé à la ligne de drainage.
6. Machine à laver selon la revendication 1, dans laquelle la ligne de drainage (60,
60a, 60b) comprend un passage de drain connecté au compartiment de pompe de drainage
(120).
7. Machine à laver selon la revendication 6, dans laquelle le passage d'air (170a, b)
est dérivé du passage de drain.
8. Machine à laver selon la revendication 6, dans laquelle le passage d'air (170b) est
formé intégralement avec le passage de drain (60b).
9. Machine à laver selon la revendication 6, dans laquelle le passage d'air (170a,b)
présente un diamètre inférieur au diamètre du passage de drain.
10. Machine à laver selon la revendication 1, dans laquelle la ligne de drainage comprend
un port de sortie (124) qui ressort du boîtier de pompe, et un tuyau de drainage (60a,b)
qui présente une extrémité connectée au port de sortie et l'autre extrémité étendue
vers l'extérieur.