CN105673521A - Drainage pump capable of reducing gas trapping at initial drainage stage - Google Patents
Drainage pump capable of reducing gas trapping at initial drainage stage Download PDFInfo
- Publication number
- CN105673521A CN105673521A CN201610173016.1A CN201610173016A CN105673521A CN 105673521 A CN105673521 A CN 105673521A CN 201610173016 A CN201610173016 A CN 201610173016A CN 105673521 A CN105673521 A CN 105673521A
- Authority
- CN
- China
- Prior art keywords
- filter
- impeller
- draining
- pump
- impeller cavity
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Abstract
The invention discloses a drainage pump capable of reducing gas trapping at the initial drainage stage. The drainage pump is provided with a filter cavity, an impeller cavity and a separation component for separating the filter cavity from the impeller cavity, wherein a drainage pump water inlet is formed in the filter cavity; a centrifugal type impeller is arranged in the impeller cavity; an impeller cavity water suction opening is formed in the separation component; the drainage pump is characterized in that a filter body for blocking foreign matters is arranged in the filter cavity; a gas flow channel penetrating through the filter cavity and the impeller cavity is formed between a water outlet of the filter body and the impeller cavity water suction opening. Under identical conditions, compared with the conventional drainage pump without the gas flow channel in the center of the filter, the drainage pump with the gas flow channel in the center of the filter has the advantages that the time of filling a pipe is greatly shortened, the problem of gas trapping at the initial drainage stage is solved, and an outstanding effect is achieved.
Description
Technical field
The present invention relates to draining pump technical field, particularly relate to the draining pump with filter.
Background technology
Roller washing machine or dish-washing machine are usually mounted with the alternating current permanent magnet synchronous water discharge pump with filter. Such as, the Korean utility model patent that application number is 20-2009-0000761 discloses a kind of draining pump being installed on washing machine, this draining pump is provided with the partition member of separator-filter chamber and pump chamber, the washings flowing into pump chamber partition member form connecting hole, so that can pass back into filter chamber. Connecting hole is positioned at the outside in impeller radius direction. By such design, the noise produced when reducing washing machine work.
Being existing a kind of alternating current permanent magnet synchronous water discharge pump as shown in Figure 1, it includes pump cover 4, spiral cover, filter 3, impeller 5, contains the motor part 6 of stator core and coil block, etc. During coil switch power, the alternating magnetic field that coil produces drives rotor assembly (comprising impeller) to rotate in certain direction by stator core, when impeller quick rotation, impeller promotes water quickly to rotate, and the water being rotated by impeller is thrown out of under the influence of centrifugal force, and the core of impeller forms negative pressure region, the water making water inlet is inhaled into, water enters impeller cavity through filter center filter screen, then discharges from outlet, so continuously works. Pump cover chamber is divided into two parts by filter mounting, and in pump operation, water is gentle to be entered in pump cover chamber, needs guiding through filter center filter screen. At the draining initial stage of washing machine or dish-washing machine, as there is gas in pump cover, being then difficult to full packages draining at once, postponing water discharge time, the tired gas phenomenon at draining initial stage occurs.
Summary of the invention
It is an object of the invention to improve the deficiencies in the prior art, it is provided that a kind of draining pump solving draining initial stage tired gas phenomenon, minimizing water discharge time.
To achieve these goals, present invention employs techniques below scheme:
A kind of draining pump reducing draining initial stage tired gas, there is filter chamber, impeller cavity and separate the partition member of filter chamber and impeller cavity, filter chamber is provided with draining pump water inlet, impeller cavity is provided with centrifugal impeller, partition member is provided with impeller cavity water sucking mouth, it is characterized in that: be provided with the filtering bodies for blocking foreign body in described filter chamber, there is between filtering bodies outlet and impeller cavity water sucking mouth the gas channel of through filter chamber and impeller cavity.
Described filtering bodies has the tubular body extended along impeller direction of principal axis, so that foreign body can be more effectively blocked in water, it is to avoid it enters filter chamber.
Preferably, the some connecting portions of formation are extended towards between the circumference of the impeller cavity water sucking mouth of described tubular body water side and partition member, described gas channel is constituted between abutting connection, can blocking foreign body effectively, filter intracavity gas can be made to enter impeller cavity quickly through gas channel under impeller effect at first bleeding stage again.
Preferably, described gas channel is the long and narrow cannelure being distributed in impeller cavity water sucking mouth circumference.
As a kind of embodiment, described draining pump at least includes the motor of impeller described in transmission, holds the pump cover of described impeller and be removably installed in the filter of pump cover inner chamber, filter includes described filtering bodies and is connected to the filter bottom bottom filtering bodies, described filter bottom constitutes the partition member of described separation filter chamber and impeller cavity, and filter bottom is removably secured and is connected to described pump cover.
As another embodiment, described draining pump at least includes the motor of impeller described in transmission, holds the pump cover of described impeller and be installed on the filter of pump cover inner chamber, filter includes described filtering bodies and is connected to the support baseboard bottom filtering bodies, and described support baseboard is removably secured the boss being connected to pump cover internal chamber wall and collectively forms the partition member of described separation filter chamber and impeller cavity with this boss.
As another embodiment, described draining pump at least includes the motor of impeller described in transmission, holds the pump cover of described impeller and be installed on the filter of pump cover inner chamber, filter includes described filtering bodies, described pump cover internal chamber wall is provided with the annular slab inwardly protruded out, and described annular slab constitutes the partition member of described separation filter chamber and impeller cavity.
Described gas channel is disposed proximate or at described impeller cavity water sucking mouth periphery.
The present invention offers gas channel at the periphery of the filter center of pump cover, filter element water side. Principle according to centrifugal pump, the center of impeller is negative pressuren zone, the gas of pump cover inner chamber and water, enter in impeller cavity quickly through gas channel and center core respectively under the suction of negative pressure, gas is without walking around filtering bodies, it is possible to enter directly into the impeller cavity of pump cover, at once can full packages draining, reduce the drainage exhaust time of machine, be better protected from the tired gas phenomenon at draining initial stage. Owing to impeller central position vacuum is the highest, it is arranged at the gas channel of impeller suction periphery owing near impeller central position, being therefore also at negative pressuren zone, can farthest eliminate tired gas problem. And be higher-pressure region at the blade peripheral position away from impeller central, gas channel is arranged on these regions can not play gas ease effect when just starting. After adopting this perforate, under the same conditions, filter center offers gas channel and filter center without compared with offering gas channel, and the time needed for full packages (namely the fully loaded water of drain pipe is absent from the state of air) is shortened to 1.6s by 11s, has significant effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing alternating current permanent magnet synchronous water discharge pump.
Fig. 2 is the structural representation of the alternating current permanent magnet synchronous water discharge pump of embodiment one.
Fig. 3 is the schematic diagram of the alternating current permanent magnet synchronous water discharge pump decomposition of embodiment one.
Fig. 4 is the cross-sectional view of the filter of embodiment one.
Fig. 5 is that the A of Fig. 4 is to schematic diagram.
Fig. 6 is structural representation during pump cover no installation filter of the present embodiment one.
Fig. 7 is the decomposing schematic representation of the alternating current permanent magnet synchronous water discharge pump of embodiment two.
Fig. 8 is structural representation during embodiment two pump cover installation filtering bodies.
Fig. 9 is the cross-sectional view of the alternating current permanent magnet synchronous water discharge pump of embodiment two.
Figure 10 a is the structural representation of embodiment one filter and pump cover.
Figure 10 b is the structural representation of filtering bodies and partition member, and in this embodiment, the water side of filtering bodies is less than the diameter of impeller cavity water sucking mouth.
Figure 10 c is the structural representation of filtering bodies and partition member, and in this embodiment, the water side of filtering bodies is more than the diameter of impeller cavity water sucking mouth.
Figure 10 d is the structural representation of filtering bodies and partition member, and in this embodiment, filtering bodies adopts barrier rib form.
Wherein, spiral cover 1, filter seal pad 2, filter 3, filter bottom 3.1, gas channel 3.2, front end-plate 3.3, floor 3.4, center drum 3.5, barrier rib 3.6, connecting portion 3.7, pump cover 4, water inlet 4.1, outlet 4.2, impeller 5, motor 6, filtering bodies 7, annular slab 8, tired gas 100, filtering bodies 130, partition member 140, gas channel 150
Detailed description of the invention
Should be understood that the upper and lower, left and right in this specification, upwards, downwards, to the left, to the right directional terms be the description for the orientation shown in accompanying drawing, these orientation are not restrictive. Without certain illustrated, term herein is inside, outside, inside and outside, inner side, outside refer to the scope relative to part centre, such as using electrical axis as reference, interior and inner side refers to closer to or points to position or the orientation of electrical axis, refers to further from motor center position with outside outward. Additionally, term level, hold up, the term such as pendency is not offered as requiring parts abswolute level or pendency, and allow to be slightly tilted. As level simply means to its direction opposed vertical level more, it is not represent that this structure is perfectly level, but can be slightly tilted.
Embodiment one
The drawings and the embodiments of the present invention are to be illustrated for alternating current permanent magnet synchronous water discharge pump, and practical application is not limited to alternating current permanent magnet synchronous water discharge pump, are equally applicable to other type of draining pump, as long as it adopts centrifugal impeller.
As most basic structure, the draining pump of the present invention includes the motor of impeller described in centrifugal impeller and transmission, and this draining pump has filter chamber, impeller cavity and separates the partition member of filter chamber and impeller cavity. Filter chamber is provided with water inlet, and water enters filter chamber from this water inlet. Impeller it is provided with in impeller cavity. Partition member offers impeller cavity water sucking mouth. The filtering bodies of blocking foreign body effect it has been provided with in filter chamber. Water enters impeller cavity after filtering bodies from impeller cavity water sucking mouth, and drains into outside pump under impeller effect. Gas channel is left, so that gas and a small amount of water in filter chamber can be inhaled in impeller cavity by this gas channel between the impeller cavity water sucking mouth of filtering bodies and partition member.
Filtering bodies is the parts of filtration, especially stops that the small articles such as the coin in water, button enter impeller cavity. Filtering bodies is made up of filter screen or barrier rib and their supporting construction, and filtering bodies can be installed on partition member by its supporting construction, it is also possible to be keep separating independent two parts with partition member. For the occasion that conveying water quality requirement is higher, filtering bodies can also adopt the mode filling filter medium in stiff case.
Alternating current permanent magnet synchronous water discharge pump as shown in Figure 2 and Figure 3, includes the parts such as magneto 6, impeller 5, pump cover 4 and filter 3.Pump cover 4 is provided with water inlet 4.1 and outlet 4.2. Filter 3 as shown in Figure 4, Figure 5 can be filled in Fig. 3 in the filter chamber of pump cover 4, and entirety can extract from filter chamber, and maintenance and installation are all very convenient. Filter 3 includes front end-plate 3.3, filter bottom 3.1, floor 3.4 and along the axially arranged center drum 3.5 of impeller axle, and front end-plate 3.3 is fixed on the front of center drum 3.5 by floor 3.4. Filter bottom 3.1 serves as the partition member that pump cover inner chamber is separated into filter chamber and impeller cavity, and filter bottom central openings is as impeller cavity water sucking mouth. In order to foreign body in the water such as coin is had good barriering effect, center drum 3.5 has certain axial length. The bottom of center drum 3.5 extends to form some connecting portions 3.7 to the impeller cavity water sucking mouth circumference of filter bottom 3.1, gas channel 3.2 is constituted between adjacent connecting portion 3.7, that is, gas channel is positioned at the delivery position of filtering bodies outlet and partition member (filter bottom 3.1), it is positioned at impeller cavity water sucking mouth periphery, is in impeller central negative pressuren zone when motor runs. As it is shown in figure 5, gas channel 3.2 has some, it is some the long and narrow cannelures being distributed in impeller cavity water sucking mouth circumference. Width between the internal-and external diameter of cannelure is 2~4 millimeters. Gas channel 3.2 becomes the passage that filter chamber directly connects with impeller cavity. Barrier rib 3.6 (can also replace with filter screen) is arranged in center drum 3.5, collectively forms filtering bodies with center drum, plays the effect of blocking foreign body. When motor just starts, impeller is quickly rotated in impeller central and forms negative pressuren zone, water in filter chamber is inhaled into impeller cavity through filtering bodies and impeller cavity water sucking mouth, gas and a small amount of liquid in filter chamber are inhaled into impeller cavity by being similarly in the gas channel 3.2 of central negative nip, and then discharge outside pump, time needed for full packages (namely the fully loaded water of drain pipe is absent from the state of air) is greatly shortened 1.6s by 11s, and foreign body is then intercepted by center drum 3.5 and can not enter in impeller cavity.
The front end-plate 3.3 of filter is connected by snap with spiral cover 1, and filter seal pad 2 and filter front plate 3.3 are combined by mounting groove. Spiral cover 1, filter seal pad 2, filter 3, pump cover 4 and the pump body portion comprising magneto 6 are assembled together composition draining pump successively. When, after spiral cover 1 of outwarding winding, filter 3 can be extracted from pump cover 4 inner chamber.
Draining pump in this example adopts alternating current permanent magnet synchronous water discharge pump, including pump cover, spiral cover, filter, vane rotor assembly, stator core and coil block. Stalloy stator teeth notching part is made up of two sections of different radii circular arcs, namely the polar arc part of stator core defines a staged, asymmetric, uneven gap structure, this gap structure can realize self-starting, it is not necessary to starts winding, play dynamic condenser or other external auxiliary devices. During coil switch power, the alternating magnetic field that coil produces drives rotor assembly (comprising impeller) to rotate in certain direction by stator core, when impeller quick rotation, impeller promotes water quickly to rotate, the water being rotated by impeller is under the influence of centrifugal force, the core of impeller forms negative pressure region, makes the water of water inlet be inhaled into. In filtering bodies water side, periphery opens gas channel, gas in filter chamber and water, it is possible to be diverted in impeller cavity respectively through gas channel and filtering bodies.Especially the gas in filter chamber can be directly entered in impeller cavity by gas channel, it is not necessary to passes over many obstacles, at once can full packages draining, reduce the water discharge time of machine, be better protected from tired gas phenomenon.
Embodiment two
If Fig. 7~9 are another embodiment of the invention, as different from Example 1, spiral cover 1, filter seal pad 2, filtering bodies 7, pump cover 4 and the pump body portion that comprises magneto 6 are assembled together composition draining pump successively.
Filtering bodies 7 is to be collectively formed by barrier rib and rigid support thereof. As shown in Figure 8, the internal chamber wall of pump cover 4 has the annular slab 8 inwardly protruded out, and annular slab 8 is separately formed the partition member for separating filter chamber and impeller cavity, and annular slab central authorities have impeller cavity water sucking mouth, and impeller cavity water sucking mouth periphery offers gas channel 3.2. Filtering bodies 7 is assembled together by the rigid support of barrier rib and annular slab.
In this example, the partition member of filter chamber and impeller cavity is separately formed by the annular slab on pump cover inner chamber, and filtering bodies is the parts relative to partition member independent separate. Certainly, the composition of partition member can also adopt other embodiment, such as, filtering bodies that the filter used includes filtration and the support baseboard linked together with filtering bodies, support baseboard and be arranged at the boss of pump cover internal chamber wall and collectively form the partition member between described filter chamber and impeller cavity.
For gas channel, the present invention also has multiple embodiment that may be present. Such as above example one and embodiment two, being all that the position extended to partition member bottom filtering bodies is stayed and set gas channel, filtering bodies and partition member are connected with each other. Such as, in the embodiment of the shown embodiment one of Figure 10 a, center drum 3.5 and being connected by connecting portion 3.7 between filter bottom 3.1, gas channel 3.2 connects between portion 3.7 at adjacent edge. Filtering bodies and the disjunct mode of partition member can also be adopted, such as, in Figure 10 b, Figure 10 c, Figure 10 d, partition member 140 central authorities have impeller cavity water sucking mouth, filtering bodies 130 is effectively fixed on front, impeller cavity water sucking mouth, filtering bodies 130 has can the effective depth of blocking foreign body, and leave bottom filtering bodies 130 and between partition member 140 be only available for air-flow and a small amount of water passes through, the narrow gap of not allowing the foreign bodies such as coin to pass through, this gap is as the gas channel 150 solving the tired problem of start gas. Filtering bodies 130 can select conventional mechanical system to be fixedly connected on pump cover inner chamber. In figure 10b, filtering bodies bottom opening is less than impeller cavity water sucking mouth. In Figure 10 c, filtering bodies bottom opening is more than impeller cavity water sucking mouth. In Figure 10 d, filtering bodies adopts fence structure on the whole, and the spacing distance of fence can ensure that the foreign bodies such as coin will not be inhaled in impeller cavity water sucking mouth.
The present invention includes, but are not limited to above-described embodiment and content shown in the drawings, other all with technical scheme, there is the product structure of identical essentiality content and each fall within protection scope of the present invention.
Claims (8)
1. the draining pump that can reduce draining initial stage tired gas, there is filter chamber, impeller cavity and separate the partition member of filter chamber and impeller cavity, filter chamber is provided with draining pump water inlet, impeller cavity is provided with centrifugal impeller, partition member is provided with impeller cavity water sucking mouth, it is characterized in that: be provided with the filtering bodies for blocking foreign body in described filter chamber, there is between filtering bodies outlet and impeller cavity water sucking mouth the gas channel of through filter chamber and impeller cavity.
2. a kind of draining pump reducing draining initial stage tired gas according to claim 1, it is characterised in that: described filtering bodies has the tubular body extended along impeller direction of principal axis.
3. a kind of draining pump reducing draining initial stage tired gas according to claim 2, it is characterized in that: extend towards the some connecting portions of formation between the circumference of the impeller cavity water sucking mouth of described tubular body water side and partition member, between abutting connection, constitute described gas channel.
4. a kind of draining pump reducing draining initial stage tired gas according to claim 3, it is characterised in that: described gas channel is the long and narrow cannelure being distributed in impeller cavity water sucking mouth circumference.
5. a kind of draining pump reducing draining initial stage tired gas according to claim 1, it is characterized in that: described draining pump at least includes the motor of impeller described in transmission, holds the pump cover of described impeller and be removably installed in the filter of pump cover inner chamber, filter includes described filtering bodies and is connected to the filter bottom bottom filtering bodies, described filter bottom constitutes the partition member of described separation filter chamber and impeller cavity, and filter bottom is removably secured and is connected to described pump cover.
6. a kind of draining pump reducing draining initial stage tired gas according to claim 1, it is characterized in that: described draining pump at least includes the motor of impeller described in transmission, holds the pump cover of described impeller and be installed on the filter of pump cover inner chamber, filter includes described filtering bodies and is connected to the support baseboard bottom filtering bodies, and described support baseboard is removably secured the boss being connected to pump cover internal chamber wall and collectively forms the partition member of described separation filter chamber and impeller cavity with this boss.
7. a kind of draining pump reducing draining initial stage tired gas according to claim 1, it is characterized in that: described draining pump at least includes the motor of impeller described in transmission, holds the pump cover of described impeller and be installed on the filter of pump cover inner chamber, filter includes described filtering bodies, described pump cover internal chamber wall is provided with the annular slab inwardly protruded out, and described annular slab constitutes the partition member of described separation filter chamber and impeller cavity.
8. a kind of draining pump reducing draining initial stage tired gas according to claim 1, it is characterised in that: described gas channel is disposed proximate or at described impeller cavity water sucking mouth periphery.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610173016.1A CN105673521B (en) | 2016-03-23 | 2016-03-23 | A kind of draining pump for reducing draining initial stage trapped gas |
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CN201610173016.1A CN105673521B (en) | 2016-03-23 | 2016-03-23 | A kind of draining pump for reducing draining initial stage trapped gas |
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CN105673521A true CN105673521A (en) | 2016-06-15 |
CN105673521B CN105673521B (en) | 2018-07-03 |
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CN201610173016.1A Active CN105673521B (en) | 2016-03-23 | 2016-03-23 | A kind of draining pump for reducing draining initial stage trapped gas |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106762697A (en) * | 2016-12-20 | 2017-05-31 | 江门市地尔汉宇电器股份有限公司 | Reduce the alternating current permanent magnet synchronous water pump of exhaust noise |
CN107904870A (en) * | 2017-10-23 | 2018-04-13 | 无锡小天鹅股份有限公司 | Draining pump and there is its washing machine |
CN109026670A (en) * | 2017-06-08 | 2018-12-18 | 佛山市顺德区美的饮水机制造有限公司 | The water pump component of ice machine and ice machine with it |
CN113862971A (en) * | 2020-06-30 | 2021-12-31 | 苏州三星电子有限公司 | Drain pump and filter piece, washing machine thereof |
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CN104169487A (en) * | 2012-02-27 | 2014-11-26 | 伊莱克斯家用产品股份有限公司 | Draining device for washing machine and washing machine |
CN205559299U (en) * | 2016-03-23 | 2016-09-07 | 江门市地尔汉宇电器股份有限公司 | Can reduce drain pump of tired gas of drainage initial stage |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN106762697A (en) * | 2016-12-20 | 2017-05-31 | 江门市地尔汉宇电器股份有限公司 | Reduce the alternating current permanent magnet synchronous water pump of exhaust noise |
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CN109026670A (en) * | 2017-06-08 | 2018-12-18 | 佛山市顺德区美的饮水机制造有限公司 | The water pump component of ice machine and ice machine with it |
CN109026670B (en) * | 2017-06-08 | 2024-04-12 | 佛山市顺德区美的饮水机制造有限公司 | Water pump assembly of ice machine and ice machine with same |
CN107904870A (en) * | 2017-10-23 | 2018-04-13 | 无锡小天鹅股份有限公司 | Draining pump and there is its washing machine |
CN113862971A (en) * | 2020-06-30 | 2021-12-31 | 苏州三星电子有限公司 | Drain pump and filter piece, washing machine thereof |
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Address after: 529040 No. 336 Qing Lan Road, hi tech Development Zone, Guangdong, Jiangmen Patentee after: Hanyu Group Co., Ltd. Address before: 529000 No. 336 Qing Lan Road, hi tech Development Zone, Guangdong, Jiangmen Patentee before: Jiangmen Idear-hanyu Electrical Joint-stock Co., Ltd. |