WO2019010850A1 - Pompe de lavage de lave-vaisselle et lave-vaisselle - Google Patents

Pompe de lavage de lave-vaisselle et lave-vaisselle Download PDF

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Publication number
WO2019010850A1
WO2019010850A1 PCT/CN2017/105501 CN2017105501W WO2019010850A1 WO 2019010850 A1 WO2019010850 A1 WO 2019010850A1 CN 2017105501 W CN2017105501 W CN 2017105501W WO 2019010850 A1 WO2019010850 A1 WO 2019010850A1
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WO
WIPO (PCT)
Prior art keywords
water
dishwasher
flow
pump
pump casing
Prior art date
Application number
PCT/CN2017/105501
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English (en)
Chinese (zh)
Inventor
徐伟
董媛媛
杨林
Original Assignee
青岛海尔洗碗机有限公司
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Application filed by 青岛海尔洗碗机有限公司 filed Critical 青岛海尔洗碗机有限公司
Publication of WO2019010850A1 publication Critical patent/WO2019010850A1/fr

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    • 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
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • 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

Definitions

  • the invention belongs to the field of kitchen equipment, in particular to a dishwasher washing pump and a dishwasher.
  • the dishwasher is a device that automatically cleans dishes, chopsticks, plates, dishes, knives, forks, etc., which can reduce labor intensity, improve work efficiency, and improve hygiene.
  • the water used in the dishwasher washing cycle is circulating water, and the sink of the dishwasher is fitted with the bottom of the tank as a container for storing circulating water.
  • the circulating water flows into the washing pump from the bottom of the sink, and is sprayed by the washing pump to the shower to wash the dishes, which flows down from the inner surface of the tableware and the inner tank and flows back to the sink.
  • the washing pump needs enough power, and the head and water pressure are sufficient to spray the water to the desired position to achieve the desired washing effect.
  • partial pressure loss refers to the pressure loss caused by the local resistance of the liquid flowing through the valve port, the elbow, and the change of the flow cross section.
  • the cause of partial pressure loss when the liquid flows through the local device, it forms a dead water zone or a vortex zone. The liquid does not participate in the main flow in this zone, but continuously swirls, accelerates the liquid friction or causes the particle collision, and generates local energy loss; When the liquid flows through the local device, the magnitude and direction of the flow rate change abruptly, and the velocity distribution law on each cross section also changes constantly, causing additional friction and consuming energy.
  • the cause of the partial pressure loss is the energy loss caused by the "dead water zone” or the "vortex zone”. Therefore, it is necessary to provide a corresponding device to avoid the above-mentioned energy loss zone of the washing water at the washing pump, thereby reducing the pressure caused thereby. Loss, thereby increasing the efficiency of the washing pump.
  • the present invention has been made in view of the above.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a dishwasher washing pump and a dishwasher, which eliminate energy loss caused by "dead water zone” or “vortex zone” in the washing pump, Improve the working efficiency of the washing pump.
  • a dishwasher washing pump comprising a spray arm, the washing pump comprising a pump casing having an inner cavity, the pump casing having an opening communicating with the spray arm, the inside of the pump casing a flow guiding portion is disposed in the cavity, and a part of the structure of the guiding portion is located The opening is within the projection of the inner cavity, and the flow guiding portion is configured to guide the water flow in the pump casing to change the moving direction, break up the vortex, and reduce the partial pressure loss of the water flow.
  • the flow guiding portion is a water guiding rib protruding from an inner surface of the pump casing
  • the water guiding rib is integrally formed on an inner wall of the pump casing.
  • one end of the water guiding rib is located at the beginning of the water flow vortex in the pump casing, and is tangential to the water flow vortex.
  • the other end of the water guiding rib extends along the curve in the direction of the water flow in the pump casing toward the side wall of the pump casing, and the curve is a water guiding rib curve.
  • the water guiding curve of the same strip includes curves of different radii of curvature
  • the radius of curvature is greater than a radius of curvature of the pump casing.
  • the number of openings is plural, and the number/length of the water guiding ribs corresponding to the different openings varies according to the intensity of the water flow at the inner cavity where the water guiding rib is located;
  • the opening corresponds to a plurality of water guiding ribs
  • the plurality of water guiding ribs do not intersect each other.
  • the height of the water guiding rib is smaller than the height of the cavity.
  • the flow guiding portion is a cylindrical water guiding column protruding from the inner surface of the pump casing and closely adhering to the surface;
  • the water guiding column height is smaller than the height of the cavity; and the water flow is in a vortex in the inner cavity;
  • the number/height/thickness of the water guiding column varies according to the intensity of the water flow at the inner cavity where the water guiding column is located.
  • the flow guiding portion is a strip-shaped guide groove having a curved curve which is recessed on an inner surface of the pump casing;
  • one end of the flow guiding trough is located at the beginning of the water flow vortex in the pump casing and is tangential to the water flow vortex there.
  • a dishwasher using the dishwasher washing pump of any of the above characterized in that the washing pump casing of the dishwasher has the flow guiding portion for eliminating a swirl of water flow in the washing pump.
  • the present invention has the following advantageous effects compared with the prior art.
  • the dishwasher washing pump and the dishwasher of the present invention guide the water flow in the pump casing to change the moving direction and break up the vortex by the flow guiding portion provided in the inner cavity of the washing pump casing, thereby reducing the water flow. Partial pressure loss improves the working efficiency of the washing pump.
  • One of the flow guiding portions of the present invention is a water guiding rib protruding from the inner surface of the pump casing and having one end located inside the pump casing The beginning of the water vortex, and tangential to the water flow vortex, and the curve of the appropriate radius of curvature in the direction of its extension, so that when the water rib breaks the vortex and eliminates the "dead water zone", The blockage of the water flow and the energy loss caused by the flow are minimized.
  • the invention is also well suited for use in a dishwasher that drives a plurality of spray arms through a wash pump.
  • the portion of the pump casing that is in communication with the lower portion of each of the spray arms is partially resisted due to a change in the bend or flow cross section, causing local pressure loss.
  • the water guiding rib is arranged at the opening of each pump casing and the spray arm, and the number/length of the water guiding ribs at each opening is increased or decreased according to the change of the water flow intensity and the special
  • the design fully considers the requirements of each area that is prone to local pressure loss, and balances the overall requirements of the dishwasher, greatly improving the efficiency of the entire washing pump.
  • due to the shape, quantity and spatial distribution of the water guiding ribs the factors are optimized accordingly, and the pressure loss caused by the obstruction of the whole guiding device itself is minimized.
  • the invention further designs an implementation form of a plurality of water guiding portions such as a water guiding column or a water guiding trough, and can individually select different washing pumps to maximize the utilization of the water guiding unit after the combination of the diversion portion and the specific pump casing.
  • the effect is that the washing pump is more efficient in water spraying, and the washing effect of the dishwasher is better and the water saving is more.
  • the flow guiding portion eliminates eddy currents and turbulence, the working noise of the washing pump during operation is also greatly reduced.
  • Figure 1 is a schematic view of a pump casing of a dishwasher washing pump and a dishwasher of the present invention
  • FIG. 2 is a schematic view showing the appearance of a pump casing of a dishwasher washing pump and a dishwasher according to the present invention
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the present invention discloses a dishwasher washing pump and a dishwasher, the dishwasher comprising a spray arm, the washing pump comprising a pump casing 2 having a cavity 3, the pump An opening is opened in the shell 2 to communicate with the spray arm, and a flow guiding portion is disposed in the inner cavity 3 of the pump casing 2, and a partial structure of the flow guiding portion is located at a projection of the opening in the inner cavity 3.
  • the flow guiding portion is configured to guide the water flow in the pump casing 2 to change the moving direction, break up the vortex, and reduce the partial pressure loss of the water flow.
  • the invention eliminates the energy loss caused by the "dead water zone" or "vortex zone” in the wash pump, thus improving the working efficiency of the wash pump.
  • a dishwasher washing pump is disclosed in this embodiment.
  • the washing pump is installed in the dishwasher and communicates with the spray arm of the dishwasher to provide high pressure washing water for the spray arm, so that the spray arm rotates rapidly under the reaction force of the sprayed washing water.
  • high-pressure washing water is sprayed onto the tableware to wash the dishwasher.
  • the washing effect of the dishwasher is directly related to the working efficiency of the washing pump, that is, the washing water pressure provided by the washing pump.
  • partial pressure loss refers to the pressure loss caused by the local resistance of the liquid flowing through the valve port, the elbow, and the change of the flow cross section.
  • the cause of partial pressure loss when the liquid flows through the local device, it forms a dead water zone or a vortex zone. The liquid does not participate in the main flow in this zone, but continuously swirls, accelerates the liquid friction or causes the particle collision, and generates local energy loss; When the local device flows through, the magnitude and direction of the flow rate change abruptly, and the velocity distribution law on each cross section also changes constantly, causing additional friction and consuming energy.
  • the opening on the dishwasher pump casing that communicates with the spray arm is most likely to cause the above partial pressure loss due to the sharply smaller cross-sectional area of the water flow here and the radius of curvature of the inner wall of the pump casing is too small.
  • the present invention provides corresponding flow guiding portions for these regions to eliminate the vortex region or the dead water region.
  • the present invention is provided with a flow guiding portion in the inner cavity 3 of the pump casing 2, a partial structure of the flow guiding portion is located in the projection of the opening in the inner cavity 3, and the flow guiding portion is used.
  • the water flow in the pump casing is changed to change the direction of motion, and the vortex is scattered to reduce the partial pressure loss of the water flow.
  • the flow guiding portion in this embodiment is a water guiding rib protruding from the inner surface of the pump casing; specifically, that is, the first guiding corresponding to the first opening 6 in FIGS. 1 and 2, respectively.
  • the rib 1, and the second water guiding rib 5 corresponding to the second opening 7.
  • the water guiding rib is an elongated water guiding rib which is closely adhered to the inner wall as a whole, and is integrally formed on the inner wall of the pump casing 2.
  • the number of the spray arms can be increased or decreased, and the water guiding ribs as described in the embodiment are disposed in the inner cavity 3 of the corresponding lower opening, which will not be described herein.
  • one ends of the first water guiding rib 1 and the second water guiding rib 5 are located at the beginning of the water flow vortex in the pump casing, and are tangential to the water flow vortex at that place; One end extends along the curve in the direction of the water flow in the pump casing toward the side wall of the pump casing, and the curve is a water guiding curve.
  • the first water guiding rib 1 comprises two water guiding ribs, and respectively forms a starting point of the water flow vortex from the first opening 6 in the pump casing, and extends in a curve direction toward the sidewall of the pump casing at the first opening 6.
  • the way to extend and eventually intersect on the side wall of the pump casing; and the second water guiding rib 5 includes only one water guiding rib, which is the starting point of the water flow vortex from the second opening 7 in the pump casing, to the second
  • the direction of the side wall of the pump casing at the opening 7 extends in a curved manner. Due to the direction of the water flow at the second opening 7, as shown in Fig. 1, the second water guiding rib 5 does not intersect the side wall.
  • the first water guiding rib 1 and the second water guiding rib 5 both extend along the curve toward the water pump, and the water guiding rib curves all include curves of different radii of curvature, and the radius of curvature is a value calculated according to a simulation experiment of the water flow and a fluid calculation.
  • the radius of curvature is larger than the radius of curvature of the pump casing.
  • the invention is applicable to a plurality of spray arms, the pump casing opening is a plurality of washing pumps, and the number/length of the water guiding ribs corresponding to different pump casing openings is different according to the water flow intensity at the inner cavity of the water guiding rib. Variety.
  • the dishwasher of this embodiment uses a water pump and simultaneously supplies water to the two spray arms.
  • the two spray arms are respectively in communication with the first opening 6 and the second opening 7, and the lower portions of the first opening 6 and the second opening 7 are simultaneously communicated with the pump wheel of the water pump through the water channel 4.
  • the first opening 6 in this embodiment is closer to the pump wheel of the water pump, and the water flow intensity here is greater than that of the second opening 7.
  • the vortex water flow intensity at the first opening 6 is greater, and the corresponding partial pressure loss is also greater, so the first water guiding rib 1 needs to be composed of two water guiding ribs, and the second guiding The ribs 5 only need a water guiding rib.
  • the length of the first water guiding rib 1 is also longer than that of the second water guiding rib 5
  • the length is long, because only in this way is it possible to achieve a better effect of eliminating local pressure loss at the first opening 6 having a greater strength. Since the second opening 7 is far away from the pump wheel, the water flow pressure is reduced after the water flow passes through the water channel 4, and the vortex and turbulence are reduced. Therefore, in order to enable the water spray and washing of the two spray arms Balancing, compared with the first opening 6, the second opening 7 is to minimize the pressure loss caused by the diversion itself, and the requirement for eliminating the vortex and turbulence is much lower than that of the first opening 6. Therefore, there is only one second water guiding rib 5 at the second opening 7, and the length is also shorter than the first water guiding rib 1.
  • a first water guiding rib 1 composed of a plurality of water guiding ribs is correspondingly arranged at the first opening 6 , and the plurality of water guiding bodies are reduced in order to minimize the pressure loss caused by the guiding current itself.
  • the ribs cannot intersect each other.
  • each of the water guiding ribs in the first water guiding rib 1 faces away from each other in a direction extending toward the side wall of the pump casing.
  • the height of the water guiding rib in the embodiment is smaller than the height of the inner cavity 3, so that the bottom water flow which eliminates the vortex at the bottom can flow in the upper part of the water guiding rib, further reducing the water flow pressure loss caused by the water guiding rib itself.
  • the flow guiding portion in the embodiment 2 is a cylindrical water guiding column that protrudes from the inner surface of the pump casing and closely adheres to the surface. Similar to Embodiment 1, the water guiding column height is less than the height of the cavity; and the water flow creates a vortex within the inner cavity.
  • the function of the water guiding column is similar to that of the above-mentioned water guiding rib, which changes the traveling direction of the original water flow, breaks up the vortex water flow, eliminates the vortex area and the dead water area, thereby reducing the partial pressure loss of the washing pump.
  • the number and height of the water guiding columns of Embodiment 2 and the thickness vary depending on the intensity of the water flow at the inner cavity where the water guiding column is located. Thereby the effective power of the washing pump is more effectively ensured and the water flow at different outlets is more balanced. For example, a water guide column with more, and or higher, and or thicker at a position where the water flow intensity is greater is required to achieve the technical requirements.
  • the flow guiding portion in the embodiment 3 is a strip-shaped guide groove having a curved curve which is recessed on the inner surface of the pump casing; One end of the diversion trough is located at the beginning of the water vortex in the pump casing and is tangential to the water flow vortex there.
  • the length, depth and number of the flow guiding groove are also related to the intensity of the vortex water flow at the position. When the vortex water flow intensity is large, the guiding groove here should be selected in length. Longer, and or deeper, and or a larger number of diversion channels.
  • the flow guiding portion used in the embodiment 4 is not a water guiding rib protruding from the inner surface of the pump casing, but a semi-suspended water guiding water fixed by the fixing device and the inner wall of the pump casing. Partition.
  • the water guiding partition of the present embodiment is different from the water guiding rib of the first embodiment in that the bottom of the water guiding partition is not closely attached to the inner surface of the pump casing, but is suspended.
  • the water guiding partition of the embodiment is designed to allow water to flow freely from the top and bottom of the water guiding partition, but the middle portion of the water flow is still deflected by the water guiding partition, thereby eliminating the swirl of the water flow. Partial pressure loss caused.
  • the embodiment discloses a dishwasher using the dishwasher washing pump according to any of the above embodiments, wherein the washing pump casing of the dishwasher has the above-mentioned embodiment for eliminating the washing pump.
  • a water flow vortex deflector that is an efficient dishwasher that eliminates partial pressure loss within the dishwasher wash pump.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une pompe de lavage de lave-vaisselle et un lave-vaisselle. Le lave-vaisselle comprend un bras de pulvérisation. La pompe de lavage comprend un boîtier de pompe (2) comprenant une cavité interne, des ouvertures (6, 7) étant disposées sur le boîtier de pompe (2) pour communiquer avec le bras de pulvérisation ; des parties de guidage d'écoulement (1, 5) sont agencées à l'intérieur de la cavité interne du boîtier de pompe (2) ; certaines des structures des parties de guidage d'écoulement (1, 5) sont situées dans des saillies des ouvertures (6, 7) dans la cavité interne (3) ; et les parties de guidage d'écoulement (1, 5) sont utilisées pour guider un écoulement d'eau à l'intérieur du boîtier de pompe (2) pour modifier une direction de mouvement de manière à rompre un tourbillon et à réduire une perte de pression locale de l'écoulement d'eau, ce qui permet d'éliminer une perte d'énergie provoquée par une "zone d'eau morte" ou "zone de tourbillon" dans la pompe de lavage et d'améliorer l'efficacité de travail de la pompe de lavage.
PCT/CN2017/105501 2017-07-14 2017-10-10 Pompe de lavage de lave-vaisselle et lave-vaisselle WO2019010850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710576409.1 2017-07-14
CN201710576409.1A CN109247895B (zh) 2017-07-14 2017-07-14 一种洗碗机洗涤泵及洗碗机

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Cited By (2)

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CN110192827A (zh) * 2019-07-04 2019-09-03 樱花卫厨（中国）股份有限公司 一种洗碗机喷淋装置及洗碗机
CN112568849A (zh) * 2019-09-27 2021-03-30 青岛海尔洗碗机有限公司 一种洗碗机

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CN102131439A (zh) * 2008-07-15 2011-07-20 伊莱克斯家用产品公司 用于洗碗机的水槽组件以及相关方法
JP2011036527A (ja) * 2009-08-17 2011-02-24 Panasonic Corp 食器洗い機
EP2730788A2 (fr) * 2012-11-12 2014-05-14 Coprececitec, S.L. Pompe de circulation de fluides adaptée à un appareil ménager
CN103075372A (zh) * 2013-01-16 2013-05-01 江苏大学 一种改善离心泵进口非均匀入流装置
CN204318683U (zh) * 2014-10-31 2015-05-13 青岛海尔洗碗机有限公司 一种用于洗碗机的过滤系统及洗碗机
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CN205383114U (zh) * 2016-03-14 2016-07-13 四川航天世源汽车部件有限公司 一种水泵出水结构
CN205697646U (zh) * 2016-05-09 2016-11-23 佛山市顺德区美的洗涤电器制造有限公司 洗碗机的进气装置及洗碗机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110192827A (zh) * 2019-07-04 2019-09-03 樱花卫厨（中国）股份有限公司 一种洗碗机喷淋装置及洗碗机
CN112568849A (zh) * 2019-09-27 2021-03-30 青岛海尔洗碗机有限公司 一种洗碗机

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