CN108866964A - Drainage pump of washing machine without semi-load noise and the washing machine comprising it - Google Patents
Drainage pump of washing machine without semi-load noise and the washing machine comprising it Download PDFInfo
- Publication number
- CN108866964A CN108866964A CN201811020981.0A CN201811020981A CN108866964A CN 108866964 A CN108866964 A CN 108866964A CN 201811020981 A CN201811020981 A CN 201811020981A CN 108866964 A CN108866964 A CN 108866964A
- Authority
- CN
- China
- Prior art keywords
- water
- pump housing
- washing machine
- semi
- water container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005406 washing Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 152
- 229920003023 plastic Polymers 0.000 claims abstract description 60
- 239000004033 plastic Substances 0.000 claims abstract description 60
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 25
- 230000001360 synchronised effect Effects 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims description 41
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 230000009972 noncorrosive effect Effects 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000012279 drainage procedure Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
- D06F39/085—Arrangements or adaptations of pumps
Abstract
This application involves a kind of drainage pump of washing machine of no semi-load noise and include its washing machine.Including plastics pump housing water container and permanent-magnet synchronous drain motor, when full water in plastics pump housing water container, two conductive phosphor bodies are connected by the resistance of water, the output that water expires signal trigger circuit is high level, trigger the control electrode of bidirectional triode thyristor, bidirectional triode thyristor conducting, the stator coil of drain motor obtain electric, drain motor work.Conversely, when water in plastics pump housing water container is discontented, i.e. half cargo condition, two conductive phosphor bodies are in off state, and the output that water expires signal trigger circuit is low level, cannot trigger the control electrode of bidirectional triode thyristor, bidirectional triode thyristor is not turned on, and drain motor does not work.Therefore draining pump only works in the case where full water is fully loaded, and does not work in the state of half water, half gas (semi-load), which had not only solved the semi-load noise of draining, but also saved the energy.The field of household appliances such as the draining pump suitable for washing machine.
Description
Technical field
This application involves be applied to family's electro-technical field, the in particular to a kind of drainage pump of washing machine and packet of no semi-load noise
Containing its washing machine.
Background technique
The drainage noise of drainage pump of washing machine currently on the market, the especially upper row of the roller washing machine with certain lift
Water pump, most noises derive from draining pump and sewage all can not be discharged.When the water remained is few, that is, half
When discharging residual water under half gas of water (semi-load) state, because not being vacuum pump, this Water pumping installation with certain lift is just
Have no idea the residual water that there is not much left to be all discharged into eminence by upper curved drainpipe, about one glass of residual water is draining
Under the high-speed rotating driving of impeller of pump, a part is done to succeed in the civil service examination in old times in drainpipe jumps not past movement always, and one
Divide gas-vapor mix body high speed impact filtering plug, the vibration of air pulsation and plastics pump housing is caused, to generate a large amount of impulse noise
Sound.
In the entire drainage procedure of draining pump, when water much namely fully loaded (full water), due to not having in the pump housing
The drainage noise of air, this when is very small, and water discharge time is very short, only about account for entire drainage procedure six/
One time, remaining institute's having time draining pump is all in discharging residual water under half water, half gas (semi-load) state, and this when does washing
The computer program of machine controls the numerous operation of dampening pumping frequency, but also is intermittent Fraquent start, then half water, half gas at this moment is more
Noise generation is aggravated, and just row is not discharged water pump at all when half half gas of water, is flogging a dead horse always, is both producing make an uproar in this way
Sound, while electric energy is wasted again.Due to the presence of this semi-load noise, the complaint of client is often made in the market.
The semi-load noise for how preferably reducing drainage pump of washing machine becomes when previous very serious technical problem, passes
The drainage pump of washing machine of system cannot preferably meet the industry requirement of continuous development.
Summary of the invention
The application is intended to provide a kind of draining pump and does not work under half cargo condition, only work under full water state without semi-load
The drainage pump of washing machine of noise and washing machine comprising it.
In order to solve the above technical problems, technical solution provided by the present application is：Drainage pump of washing machine without semi-load noise, packet
Plastics pump housing water container and permanent-magnet synchronous drain motor are included, there is impeller on the motor shaft of the permanent-magnet synchronous drain motor,
The impeller protrudes into plastics pump housing water container, and the plastics pump housing water container has water inlet and discharge outlet, the draining
The position of mouth corresponds to the drainage position of the impeller, has two in the plastics pump housing water container and leads motor body, described
At least provided with a conductive phosphor bodies at the top of the water level of plastics pump housing water container, described two conductive phosphor bodies are completely believed with water
Number trigger circuit is connected, and the output that the water expires signal trigger circuit is connected with the control electrode of bidirectional triode thyristor.
Preferably, also there is electric conductor branch on at least one conductive phosphor bodies, the electric conductor branch can
Any position in plastics pump housing water container is arranged in.
Preferably, the either described electric conductor branch of the conductive phosphor bodies has with plastics pump housing water container junction
The material of sealant, the conduction phosphor bodies and the electric conductor branch is surface non-corrosive metal material.
Preferably, the first anode of the bidirectional triode thyristor and second plate respectively with the input of alternating current and the permanent magnetism
The stator coil series connection of synchronous drain motor.
Preferably, the water expires the step-down rectifier voltage regulator circuit that signal trigger circuit includes an alternating current, is described
Water expires signal trigger circuit and provides a DC power supply VCC.
Preferably, it also includes an operational amplifier, the same phase of the operational amplifier that the water, which expires signal trigger circuit,
Input terminal meets capacitor one end, another electric conductor master through the conductive phosphor bodies and the DC power supply VCC respectively
Body is connected with the other end of the capacitor and direct current, and the inverting input terminal of the operational amplifier is followed by described through resistance decompression
DC power supply VCC provides a DC reference voltage for the operational amplifier.
The another technical solution that the application also provides is：Drainage pump of washing machine without semi-load noise, including plastics pump housing
Water container and permanent-magnet synchronous drain motor have impeller, the impeller on the motor shaft of the permanent-magnet synchronous drain motor
It protrudes into plastics pump housing water container, the plastics pump housing water container has water inlet and discharge outlet, the position pair of the discharge outlet
There are in the plastics pump housing water container drainage position of impeller described in Ying Yu two to be led motor body, and the plastics pump housing is held
At least provided with a conductive phosphor bodies at the top of the water level of hydrophone, described two conductive phosphor bodies expire signal trigger circuit with water
It is connected, the output that the water expires signal trigger circuit is connected with the control electrode of bidirectional triode thyristor.
Preferably, also there is electric conductor branch on at least one conductive phosphor bodies, the electric conductor branch can
Any position in plastics pump housing water container is arranged in.
Preferably, the either described electric conductor branch of the conductive phosphor bodies has with plastics pump housing water container junction
The material of sealant, the conduction phosphor bodies and the electric conductor branch is surface non-corrosive metal material.
Preferably, the first anode of the bidirectional triode thyristor and second plate respectively with the input of alternating current and the permanent magnetism
The stator coil series connection of synchronous drain motor.
Preferably, the water expires the step-down rectifier voltage regulator circuit that signal trigger circuit includes an alternating current, is described
Water expires signal trigger circuit and provides a DC power supply VCC.
Preferably, the water expire signal trigger circuit include a triode, the transistor collector respectively with one
The conduction phosphor bodies are connected with the DC power supply VCC, and the transistor base is through resistance and another electric conductor master
Body is connected, and the transistor emitter resistance grounded, the triode emission extremely water expires the output of signal trigger circuit.
The another aspect of the application is related to a kind of washing machine, including the washing machine drainage as described above without semi-load noise
Pump.
According to above scheme it can be seen that the application has the following advantages that：There are two conductive machines in plastics pump housing water container
Main body, this two conductive phosphor bodies expire signal trigger circuit with water and are connected, water expire the output of signal trigger circuit with it is two-way can
The control electrode for controlling silicon is connected, and in plastics pump housing water container when full water, two conductive phosphor bodies are connected by the resistance of water, water
The output of full signal trigger circuit is high level, triggers the control electrode of bidirectional triode thyristor, and bidirectional triode thyristor is connected, drain motor
Stator coil obtains electric, permanent-magnet synchronous drain motor work.Conversely, when water in plastics pump housing water container is discontented, i.e. semi-load
State, two conductive phosphor bodies be in off state, and water expires the output of signal trigger circuit for low level, cannot trigger it is two-way can
The control electrode of silicon is controlled, bidirectional triode thyristor is not turned on, and permanent-magnet synchronous drain motor does not work.Therefore draining pump is only fully loaded in full water
In the case where work, and do not work in the state of half water, half gas (semi-load), the semi-load which had both solved draining make an uproar
Sound, while the energy is saved again.
Detailed description of the invention
Fig. 1 is the schematic diagram of the drainage pump of washing machine embodiment without semi-load noise of the application.
Fig. 2 is the schematic diagram of another embodiment of the drainage pump of washing machine without semi-load noise of the application.
Fig. 3 is that the water of the application expires the circuit diagram of signal trigger circuit embodiment.
Fig. 4 is that the water of the application expires the circuit diagram of another embodiment of signal trigger circuit.
Detailed description of the invention：1, permanent-magnet synchronous drain motor, 2, motor shaft, 3, impeller, 4, plastics pump housing water container, 5, water inlet
Mouthful, 6, discharge outlet, 7, sealant, 8, water expire signal trigger circuit, 9, bidirectional triode thyristor, 10, permanent-magnet synchronous drain motor determines
Subcoil, A, conductive phosphor bodies, A ', electric conductor branch, B, another conductive phosphor bodies, G, water expire signal trigger circuit output and
The controlled stage of bidirectional triode thyristor.
Specific embodiment
Application scheme is described in further detail with reference to the accompanying drawing.
In conjunction with the first embodiment of the drainage pump of washing machine of attached drawing 1, Fig. 2 and no semi-load noise shown in Fig. 3, packet
Plastics pump housing water container 4 and permanent-magnet synchronous drain motor 1 are included, there is impeller 3, leaf on the motor shaft 2 of permanent-magnet synchronous drain motor 1
Wheel 3 protrudes into plastics pump housing water container 4, and plastics pump housing water container 4 has water inlet 5 and discharge outlet 6, the position pair of discharge outlet 6
There should be two in the drainage position of impeller 3, plastics pump housing water container 4 and lead motor body A and B, plastics pump housing water container 4
Expire signal trigger circuit with water at least provided with an electric conductor main body A or B, two electric conductor main body As and B at the top of water level
8 are connected, and water expires the output of signal trigger circuit 8 and is connected with the control electrode G of bidirectional triode thyristor 9.
Also there is electric conductor branch A1, electric conductor branch A1 can be set in plastics in an at least electric conductor main body A
Any position in pump housing water container 4.Electric conductor main body A and B and electric conductor branch A1 and 4 junction of plastics pump housing water container
With sealant 7, the material of electric conductor main body A and B and electric conductor branch A1 are surface non-corrosive metal material.
The first anode A1 and second plate A2 of bidirectional triode thyristor 9 respectively with the input of alternating current, that is, L input and N input with
And the stator coil 10 of drain motor 1 is connected.Water expires the step-down rectifier pressure stabilizing electricity that signal trigger circuit 8 includes an alternating current
Road expires signal trigger circuit for water and provides a DC power supply VCC.Wherein step-down rectifier voltage regulator circuit by C1, R1, R2, D1,
D2, C2 and R3 form half-wave rectifier voltage circuit, select half-wave rectifying circuit here, are also can be selected normal for save the cost
The bridge rectifier seen.
Water expires signal trigger circuit 8 also comprising an operational amplifier IC1, the non-inverting input terminal "+" of operational amplifier IC1
One end of capacitor C3 is connect through an electric conductor main body A and DC power supply VCC respectively, another conduction phosphor bodies B and capacitor C3's
The other end with direct current is connected, the inverting input terminal "-" of operational amplifier 8 through resistance R4 and R5 decompression be followed by R4 and R5 it
Between, R4 meets DC power supply VCC, and R5 with connecing direct current, for operational amplifier IC1 provides a DC reference voltage.
Due to having two to lead motor body A and B, the water level top of plastics pump housing water container 4 in plastics pump housing water container 4
At least provided with an electric conductor main body A or B, then only when the water level in plastics pump housing water container 4 reaches plastics pump housing
The top of water container 4, that is, when plastics pump housing 4 full water of water container, two electric conductor main body As and B could pass through water
Resistance and constitute circuit, water expires the output of signal trigger circuit 8, i.e. the output of operational amplifier IC1 is high level, triggers two-way
Silicon-controlled 9 control electrode G, bidirectional triode thyristor 9 are connected, and the stator coil 10 of permanent-magnet synchronous drain motor 1 obtains electric, permanent-magnet synchronous row
Hydroelectric machine 1 works.Conversely, when water in plastics pump housing water container 4 is discontented, i.e. half cargo condition, two electric conductor main body As and
B is in off state, and water expires the output of signal trigger circuit 8, i.e. the output of operational amplifier IC1 is low level, cannot trigger
The control electrode G of bidirectional triode thyristor 9, bidirectional triode thyristor 9 are not turned on, and permanent-magnet synchronous drain motor 1 does not work.
The application another program is described in further detail with reference to the accompanying drawing.
In conjunction with the another embodiment of the drainage pump of washing machine of attached drawing 1, Fig. 2 and no semi-load noise shown in Fig. 4, packet
Plastics pump housing water container 4 and permanent-magnet synchronous drain motor 1 are included, there is impeller 3, leaf on the motor shaft 2 of permanent-magnet synchronous drain motor 1
Wheel 3 protrudes into plastics pump housing water container 4, and plastics pump housing water container 4 has water inlet 5 and discharge outlet 6, the position pair of discharge outlet 6
There should be two in the drainage position of impeller 3, plastics pump housing water container 4 and lead motor body A and B, plastics pump housing water container 4
Expire signal trigger circuit with water at least provided with an electric conductor main body A or B, two electric conductor main body As and B at the top of water level
8 are connected, and water expires the output of signal trigger circuit 8 and is connected with the control electrode G of bidirectional triode thyristor 9.
Also there is electric conductor branch A1, electric conductor branch A1 can be set in plastics in an at least electric conductor main body A
Any position in pump housing water container 4.Electric conductor main body A and B and electric conductor branch A1 and 4 junction of plastics pump housing water container
With sealant 7, the material of electric conductor main body A and B and electric conductor branch A1 are surface non-corrosive metal material.
The first anode A1 and second plate A2 of bidirectional triode thyristor 9 respectively with the input of alternating current, that is, L input and N input with
And the stator coil 10 of drain motor 1 is connected.Water expires the step-down rectifier pressure stabilizing electricity that signal trigger circuit 8 includes an alternating current
Road expires signal trigger circuit for water and provides a DC power supply VCC.Wherein step-down rectifier voltage regulator circuit by C1, R1, R2, D1,
D2, C2 and R3 form half-wave rectifier voltage circuit, select half-wave rectifying circuit here, are also can be selected normal for save the cost
The bridge rectifier seen.
It includes a triode Q1 that water, which expires signal trigger circuit 8, triode Q1 collector c respectively with a conductive phosphor bodies
A is connected with DC power supply VCC, and the base stage b of triode Q1 is connected through resistance R4 with another conduction phosphor bodies B, triode Q1's
Emitter e is grounded through resistance R5, and the emitter e of triode Q1 is the output G that water expires signal trigger circuit 8.
Due to having two to lead motor body A and B, the water level top of plastics pump housing water container 4 in plastics pump housing water container 4
At least provided with an electric conductor main body A or B, then only when the water level in plastics pump housing water container 4 reaches plastics pump housing
The top of water container 4, that is, when plastics pump housing 4 full water of water container, two electric conductor main body As and B could pass through water
Resistance and constitute circuit, water expires the output of signal trigger circuit 8, i.e. the emitter e output of triode Q1 is high level, and triggering is double
To silicon-controlled 9 control electrode G, bidirectional triode thyristor 9 is connected, and the stator coil 10 of permanent-magnet synchronous drain motor 1 obtains electric, permanent-magnet synchronous
Drain motor 1 works.Conversely, when water in plastics pump housing water container 4 is discontented, i.e. half cargo condition, two electric conductor main body As
It is in off state with B, water expires the output of signal trigger circuit 8, i.e. the output of the emitter e of triode Q1 is low level, no
The control electrode G of bidirectional triode thyristor 9 can be triggered, bidirectional triode thyristor 9 is not turned on, and permanent-magnet synchronous drain motor 1 does not work.
The application further relates to a kind of washing machine, including draining pump as described above.Since the application is only related to draining pump
Improvement, without regard to the improvement of other component, so being repeated no more to other component.It is to be understood that washing according to the application
The other component of clothing machine is the prior art, and those skilled in the art are fully able to realize.
The application and embodiments thereof are described above, description is not limiting, it is shown in the drawings also only
It is one of presently filed embodiment, actual structure is not limited to this.All in all if the ordinary skill people of this field
Member is enlightened by it, in the case where not departing from the application creation objective, is not inventively designed similar to the technical solution
Frame mode and embodiment, should belong to the protection scope of the application.
Claims (9)
1. the drainage pump of washing machine without semi-load noise, including plastics pump housing water container and permanent-magnet synchronous drain motor, it is described forever
There is impeller, the impeller protrudes into plastics pump housing water container, the plastics pump housing on the motor shaft of magnetic-synchro drain motor
Water container has water inlet and discharge outlet, and the position of the discharge outlet corresponds to the drainage position of the impeller, which is characterized in that
There are two in the plastics pump housing water container and lead motor body, at the top of the water level of the plastics pump housing water container at least provided with
A piece conductive phosphor bodies, described two conductive phosphor bodies expire signal trigger circuit with water and are connected, and the water expires signal triggering electricity
The output on road is connected with the control electrode of bidirectional triode thyristor.
2. the drainage pump of washing machine of no semi-load noise according to claim 1, which is characterized in that at least led described in one
Also there is electric conductor branch, any position in plastics pump housing water container can be set in the electric conductor branch on electric phosphor bodies
It sets.
3. the drainage pump of washing machine of no semi-load noise according to claim 1 or 2, which is characterized in that the electric conductor master
The either described electric conductor branch of body and plastics pump housing water container junction have a sealant, conduction phosphor bodies and described
Electric conductor branch material be surface non-corrosive metal material.
4. the drainage pump of washing machine of no semi-load noise according to claim 1 or 3, which is characterized in that described two-way controllable
The first anode and second plate of silicon are connected with the stator coil of the input of alternating current and the permanent-magnet synchronous drain motor respectively.
5. the drainage pump of washing machine of no semi-load noise according to claim 4, which is characterized in that the water expires signal triggering
Circuit includes the step-down rectifier voltage regulator circuit of an alternating current, expires signal trigger circuit for the water and provides a DC power supply
VCC。
6. the drainage pump of washing machine of no semi-load noise according to claim 5, which is characterized in that the water expires signal triggering
Circuit also includes an operational amplifier, the non-inverting input terminal of the operational amplifier respectively through the conductive phosphor bodies and
The DC power supply VCC connects capacitor one end, and another conductive phosphor bodies are connected with the other end of the capacitor and direct current,
The inverting input terminal of the operational amplifier is followed by the DC power supply VCC through resistance decompression, provides for the operational amplifier
One DC reference voltage.
7. the drainage pump of washing machine without semi-load noise, including plastics pump housing water container and drain motor, the permanent-magnet synchronous row
There is impeller, the impeller protrudes into plastics pump housing water container, the plastics pump housing water container tool on the motor shaft of hydroelectric machine
There are water inlet and discharge outlet, the position of the discharge outlet corresponds to the drainage position of the impeller, which is characterized in that the plastics
There are two to be led motor body, the water level top of the plastics pump housing water container is at least provided with a conduction in pump housing water container
Phosphor bodies, described two conductive phosphor bodies expire signal trigger circuit with water and are connected, and the water expires the output of signal trigger circuit
It is connected with the control electrode of bidirectional triode thyristor.
8. the drainage pump of washing machine of no semi-load noise according to claim 5, which is characterized in that the water expires signal triggering
Circuit includes a triode, the transistor collector respectively with the conductive phosphor bodies and the DC power supply VCC
It is connected, the transistor base is connected through resistance with another conductive phosphor bodies, and the transistor emitter connects through resistance
Ground, the triode emission extremely water expire the output of signal trigger circuit.
9. a kind of washing machine, which is characterized in that the washing machine including no semi-load noise according to claim 1-8
Draining pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020981.0A CN108866964A (en) | 2018-09-03 | 2018-09-03 | Drainage pump of washing machine without semi-load noise and the washing machine comprising it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020981.0A CN108866964A (en) | 2018-09-03 | 2018-09-03 | Drainage pump of washing machine without semi-load noise and the washing machine comprising it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108866964A true CN108866964A (en) | 2018-11-23 |
Family
ID=64323181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811020981.0A Pending CN108866964A (en) | 2018-09-03 | 2018-09-03 | Drainage pump of washing machine without semi-load noise and the washing machine comprising it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108866964A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168914A (en) * | 2006-10-25 | 2008-04-30 | 苏州三星电子有限公司 | Modified residual water discharging structure for washing machine drainage pump |
| CN102817214A (en) * | 2012-08-08 | 2012-12-12 | 海尔集团公司 | Drainage system capable of lowering drainage noise of washing machine and control method thereof |
| CN205258904U (en) * | 2015-11-30 | 2016-05-25 | 无锡小天鹅股份有限公司 | Washing machine |
| JP2017133409A (en) * | 2016-01-27 | 2017-08-03 | 株式会社日立製作所 | Drainage pump and operational method therefor |
| CN107769503A (en) * | 2017-11-28 | 2018-03-06 | 无锡好力泵业有限公司 | Electronic type alternating-current synchronous drain motor and draining pump, washing machine comprising it |
| CN209010780U (en) * | 2018-09-03 | 2019-06-21 | 无锡好力泵业有限公司 | Drainage pump of washing machine without semi-load noise and the washing machine comprising it |
-
2018
- 2018-09-03 CN CN201811020981.0A patent/CN108866964A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168914A (en) * | 2006-10-25 | 2008-04-30 | 苏州三星电子有限公司 | Modified residual water discharging structure for washing machine drainage pump |
| CN102817214A (en) * | 2012-08-08 | 2012-12-12 | 海尔集团公司 | Drainage system capable of lowering drainage noise of washing machine and control method thereof |
| CN205258904U (en) * | 2015-11-30 | 2016-05-25 | 无锡小天鹅股份有限公司 | Washing machine |
| JP2017133409A (en) * | 2016-01-27 | 2017-08-03 | 株式会社日立製作所 | Drainage pump and operational method therefor |
| CN107769503A (en) * | 2017-11-28 | 2018-03-06 | 无锡好力泵业有限公司 | Electronic type alternating-current synchronous drain motor and draining pump, washing machine comprising it |
| CN209010780U (en) * | 2018-09-03 | 2019-06-21 | 无锡好力泵业有限公司 | Drainage pump of washing machine without semi-load noise and the washing machine comprising it |
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