WO2020034828A1 - 泵组件及配置有该泵组件的洗涤设备 - Google Patents

泵组件及配置有该泵组件的洗涤设备 Download PDF

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Publication number
WO2020034828A1
WO2020034828A1 PCT/CN2019/098090 CN2019098090W WO2020034828A1 WO 2020034828 A1 WO2020034828 A1 WO 2020034828A1 CN 2019098090 W CN2019098090 W CN 2019098090W WO 2020034828 A1 WO2020034828 A1 WO 2020034828A1
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WIPO (PCT)
Prior art keywords
pump assembly
impeller
pump
blade
cavity
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PCT/CN2019/098090
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English (en)
French (fr)
Inventor
赵志强
许升
吕佩师
赵新宇
Original Assignee
青岛海尔滚筒洗衣机有限公司
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Publication of WO2020034828A1 publication Critical patent/WO2020034828A1/zh

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    • 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
    • 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
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2216—Shape, geometry
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape

Definitions

  • the present invention relates to the field of pump devices, and in particular, to a pump assembly and a washing device equipped with the pump assembly.
  • the importance of the water pump as an indispensable power unit for a washing machine is self-evident.
  • the existing washing machine pump is an AC pump driven by a permanent magnet synchronous motor.
  • the basic speed is 3000 rpm and the drainage flow is about 20L per minute.
  • the price is cheap, the drainage flow is low. It is used in the drainage system or circulating spray of washing machines.
  • the hydraulic performance in the shower system is poor.
  • washing machine models are equipped with a drain pump or a circulating pump with a brushless DC motor.
  • Various speeds such as minutes, 4500 rpm, 6000 rpm, etc., achieve a drainage flow of about 40-120L per minute, or even a higher drainage flow, thereby improving the hydraulic performance of the pump.
  • a pump device is expensive, and has a control box more than a permanent magnet synchronous motor, which requires a larger installation space in a washing machine.
  • a first aspect of the present invention provides a pump assembly including a pump body, A water inlet cavity and at least one drainage cavity are formed, the water inlet cavity and the drainage cavity meet and thus form a junction, and the pump body is provided with a water inlet that communicates with the water inlet cavity and the drainage A water outlet connected to the cavity; an impeller provided in the drainage cavity, the impeller including a wheel disc and a plurality of blades on one side of the wheel disc; a driving component connected to the impeller for driving The impeller rotates; wherein, in a direction parallel to the axis of the impeller, a pressure relief channel is formed between the junction and the upper edge of the blade, so as to increase the flow rate of the water outlet.
  • a peak is formed on the upper edge of the blade, and a channel between the peak and the intersection is the pressure relief channel.
  • the impeller includes a center shaft, and a plurality of the blades are connected to the center shaft and thus form an intersection line, and the height of the intersection line is lower than that of the disc surface to the center. The height of the upper edge of the blade.
  • the junction includes an annular protrusion extending into the drainage cavity, and a passage between the annular protrusion and the upper edge of the blade is the pressure relief aisle.
  • a width of the pressure relief channel is 0 to 4 mm.
  • the width of the pressure relief channel is 2 to 3 mm.
  • the impeller is a backward curved impeller.
  • the exit angle of the blade is 0-60 °.
  • the exit angle of the blade is 15-60 °.
  • the pump assembly when used as a drainage pump of a washing machine, the drainage efficiency of the washing machine can be effectively improved; when the pump assembly is used as a circulation pump of the washing machine, it can effectively accelerate the water circulation speed and enhance the spray pressure of the circulating water on the laundry , Thereby improving the washing effect of the washing machine.
  • the width of the pressure-relief passage is set to 2 to 3 mm, it can provide sufficient displacement space for the impeller in operation, and avoid the increase in processing accuracy requirements due to the gap being too small.
  • the pressure relief effect avoids increasing processing costs.
  • the output pressure of the pump assembly can be effectively increased, thereby improving the pump flow rate better.
  • washing apparatus which comprises at least one pump assembly according to any one of the above technical solutions.
  • washing equipment in the present invention has all the technical effects of the above-mentioned pump assembly, which is not repeated here.
  • FIG. 1 is a first embodiment of a drum washing machine according to the present invention, which illustrates a case where a drain pump and a circulation pump share a pump body;
  • FIG. 2 is a schematic front view of the drum washing machine in FIG. 1;
  • FIG. 3 is a second embodiment of the drum washing machine of the present invention, in which a drain pump and a circulation pump are independent;
  • FIG. 4 is a schematic isometric side view of a pump assembly of the present invention, showing a first embodiment of the pump assembly;
  • FIG. 5 is a schematic top view of the pump assembly in FIG. 4;
  • FIG. 6 is a schematic front view of the pump assembly in FIG. 4;
  • FIG. 7 is a schematic cross-sectional view taken along A-A in FIG. 5;
  • FIG. 8 is a schematic assembly diagram of a motor and an impeller of the present invention.
  • FIG. 9 is a schematic front view of FIG. 8;
  • FIG. 10 is a schematic top view of FIG. 8;
  • FIG. 11 is a schematic structural diagram of an impeller of the present invention.
  • FIG. 12 is a schematic front view of FIG. 11;
  • the present invention provides a pump assembly, which aims to increase the displacement of the pump assembly and improve the hydraulic performance of the pump device.
  • FIG. 1 is a first embodiment of a drum washing machine according to the present invention, in which a drainage pump and a circulation pump share a pump body;
  • FIG. 2 is a schematic front view of the drum washing machine in FIG. ;
  • Figure 3 is a second embodiment of the drum washing machine of the present invention, which shows the situation where the drainage pump and the circulation pump are independent;
  • Figure 4 is a schematic isometric side view of the pump assembly of the present invention, in which the pump is shown A first embodiment of the assembly;
  • FIG. 5 is a schematic top view of the pump assembly in FIG. 4;
  • FIG. 6 is a schematic front view of the pump assembly in FIG. 4;
  • FIG. 7 is a schematic cross-sectional view taken along the line AA in FIG. 5;
  • FIG. 9 is a schematic front view of FIG. 8;
  • FIG. 10 is a schematic top view of FIG. 8;
  • FIG. 11 is a schematic structural view of the impeller of the present invention;
  • FIG. 12 is a schematic front
  • this embodiment uses a drum washing machine as an example.
  • the drum washing machine has a casing 1, an outer tube 2 is disposed in the casing 1, an inner tube is rotatably disposed in the outer tube 2, and the upper portion of the outer tube 2 is
  • a suspension spring is provided in the space between the shells 1, and a shock absorber 5 is provided below the outer cylinder 2 and between the shell 1.
  • the suspension spring and the shock absorber 5 jointly realize shock absorption of the inner and outer cylinders.
  • the front panel of the washing machine is provided with an observation window for observing the inner environment of the inner tub.
  • An annular cavity 3 is provided in the circumferential direction of the observation window, and a sealed window pad 4 and a plurality of nozzles are provided on the inner periphery of the annular cavity 3.
  • the annular cavity is in communication with the circulation pipe 7 of the washing machine, so that the washing water transported by the circulation pipe 7 can be sprayed to the nozzle On the inner tube.
  • the pump assembly 6 is located at the lower right of the washing machine body.
  • the pump assembly 6 includes a pump body 61, a first motor 62, and a second motor 63, and the first motor 62 and the second motor 63 are both connected to the pump body.
  • the pump body 61 is formed with a pump cavity.
  • the pump body 61 is provided with a water inlet 66, a first water outlet 65 and a second water outlet, which are in communication with the pump cavity, so that the pump assembly 6 can realize two-way drainage.
  • the water inlet 66 is in communication with one end of the water inlet pipe 8, and the other end of the water inlet pipe 8 is connected to the water outlet of the outer cylinder 2.
  • the water in the outer cylinder 2 can enter the pump cavity through the water inlet pipe 8.
  • the first water outlet 65 communicates with a drain pipe 9 in the washing machine.
  • the drain pipe 9 is used to discharge water from the outer tub 2 to the outside of the machine.
  • the second water outlet 64 communicates with a circulation pipe 7 in the washing machine.
  • the circulation pipe 7 is used for The washing water pumped from the outer cylinder 2 is circulated and conveyed into the outer cylinder 2.
  • FIG. 3 shows a second embodiment of the drum washing machine of the present invention.
  • the drum washing machine in this embodiment uses two pump assemblies 6 in the present invention, and a single pump assembly is provided with only one water outlet, so that the pump assembly can be used as a drainage pump of the washing machine respectively. Or circulating pump.
  • the outlet of the outer cylinder 2 is connected with a tee pipe.
  • the two branch pipes of the tee pipe form the inlet pipe 8 of the drainage pump and the inlet pipe 8 of the circulation pump.
  • the two inlet pipes 8 are connected to the respective pump components.
  • the pump cavity is formed with a water inlet cavity 611 and a drainage cavity, and the drainage cavity is in communication with the water outlet.
  • the pump assembly 6 located on the left side of the washing machine is a drainage pump, and its water outlet is connected to the drain pipe 9 of the washing machine; the pump assembly 6 located on the right side of the washing machine is a circulation pump, and its water outlet is connected to the circulation pipe 7 of the washing machine.
  • the pump assembly 6 includes a pump body 61.
  • the pump body 61 is formed with a pump cavity.
  • the pump cavity includes a water inlet cavity 611, a first drainage cavity 612, and a second drainage cavity.
  • the pump body 61 is provided with a water inlet 66, a first water outlet 65 and a second water outlet 64.
  • the water inlet 66 communicates with the water inlet cavity 611
  • the first water outlet 65 communicates with the first drainage cavity 612
  • the second water outlet 64 communicates with The second drainage cavity communicates.
  • the pump assembly 6 further includes a driving component.
  • the driving part is used for driving the impeller 67 in the pump cavity to rotate.
  • the driving component in this embodiment includes a first motor 62 and a second motor 63.
  • the first motor 62 and the second motor 63 are both permanent magnet synchronous motors, and the rotation speed is 3000 rpm.
  • the connection between the first motor 62 and the impeller 67 is taken as an example.
  • the impeller 67 is fixedly connected to the pump shaft 621, and the first motor 62 drives the pump shaft 621 to rotate, thereby driving the impeller 67 to rotate.
  • the first motor 62 is fixedly connected to the pump body 61 through a motor base 68.
  • the impeller 67 and the motor base 68 are separated by an isolation plate 681, and the isolation plate 681 and the pump body 61 are sealed by an annular sealing ring 682 to prevent water leakage of the pump body 61.
  • the connecting member for connecting the driving part and the pump body 61 may be other connecting structures besides the motor base 68.
  • the pump assembly 6 further includes an impeller 67 including a blade 672, and the following uses the impeller 67 provided in the first drainage cavity 612 as an example.
  • the water inlet cavity 611 and the first drainage cavity 612 meet and thus form an intersection portion 613.
  • a pressure relief channel is formed between the intersection 613 and the upper edge of the blade, so as to increase the flow rate of the water outlet.
  • the edge of the intersection 613 extends into the drainage cavity to form a ring-shaped protrusion 6131, and the ring-shaped protrusion 6131 is arranged adjacent to the impeller 67 (not shown) whose upper edge of the blade is flat and formed to prevent leakage. Pressure channel to achieve anti-pressure relief effect.
  • a pressure-relief channel with a very small gap is formed between the blade 672 peak portion 6722 and the ring-shaped projection 6131, which can raise To better anti-pressure relief effect.
  • a peak portion is provided on the upper edge of the blade, and / or an annular protrusion facing the drainage cavity is provided at the intersection of the water inlet cavity and the drainage cavity, and the peak portion and the annular protrusion are disposed adjacent to each other.
  • the impeller 67 includes a wheel disc 671 and a plurality of blades 672 on one side of the wheel disc 671.
  • the plurality of blades 672 and the wheel disc 671 may be integrally formed, and the individual blades 672 may also be fixed to the wheel disc 671 by means of bonding or plugging.
  • the integrally formed impeller 67 is stronger and easier to process.
  • the wheel disc 671 is provided with a plurality of balancing holes 6711 for balancing the pressure on both sides of the wheel disc 671 and at the same time reducing the noise during the operation of the impeller 67.
  • a reinforcing rib is also provided on the side of the wheel disc 671 opposite to the blade 672 to enhance the strength of the wheel disc 671.
  • a peak portion 6722 is formed on the blade of the impeller 67 in this embodiment, and the upper edge of the blade is divided into two consecutive sections due to the existence of the peak portion 6722, which are the first upper edge 6721 and the blade first
  • the two upper edges 6723, the intersection of the first upper edge 6721 and the second upper edge 6723 of the blade are peaks 6722.
  • the first upper edge 6721 of the blade starts from the central axis of the impeller 67, gradually climbs up to the peak 6722, and then gradually extends downward to form the second upper edge 6723 of the blade. There is a very small gap between the peak portion 6722 and the junction portion 613, and thus a pressure relief channel is formed.
  • the gap is extremely small, which can effectively prevent water from passing through the gap between the upper edge of the blade and the cavity wall of the drainage cavity, so that the water in the water inlet cavity 611 can only be discharged through the flow channel formed between the blades 672, effectively avoiding The pressure and flow caused by the gap between the blade 672 and the pump cavity is too large, thereby effectively increasing the pump pressure and pump flow at the water outlet.
  • a plurality of blades 672 are connected to the center axis and thus form an intersection line.
  • the height of the intersection line is lower than the height of the disk 671 disk surface to the blade upper edge, that is, the blade first upper edge 6721 is close to the middle.
  • the position of the shaft is closest to the disk 671 disk surface, the peak portion 6722 is farthest from the disk 671 disk surface, and the height of the second upper edge 6723 of the blade from the disk surface 671 is between the beginning of the blade 672 and the peak portion 6722.
  • the pressure-relief passage be formed with the intersection 613 on the pump cavity near the tail of the blade 672, but also the upper edge of the impeller 67 can form a concave curved surface, thereby increasing the water inflow and the pump's water discharge. And hydraulic performance. While using the existing permanent magnet synchronous motor, the displacement of the pump is increased by three times or more.
  • the impeller 67 adopts the backward curved impeller 67, which helps to increase the drainage pressure.
  • the backward curved impeller 67 that is, the impeller in which the bending direction of the blade 672 is opposite to the rotation direction of the impeller 67, and the exit angle of the blade 672 is less than 90 °, the use of the backward curved impeller 67 can achieve a better pressure increase effect and can effectively increase the pump flow.
  • the exit angle of the blade 672 is set to 0-60 °, and more preferably, the exit angle of the blade 672 is set to 15-60 °.
  • the exit angle of the blade 672 is set to 15 ° to 60 °, the water in the water inlet chamber 611 can be smoothly discharged along the flow path between the blades 672, and the drainage process will not be hindered by the excessive bending of the blade 672, which will smoothly Realize the increase of drainage flow.
  • the width of the pressure-relief passage is 0 to 4 mm, and further preferably, the width of the pressure-relief passage is 2 to 3 mm. In this way, the processing requirements of the pump body 61 and the blade 672 are not too high, and the processing is performed at low cost. Under the premise, it can increase the flow of the pump.
  • Another aspect of the present invention also provides a drum washing machine.
  • the washing machine in the present invention is equipped with the pump assembly 6 in any of the foregoing technical solutions, and the effect is the same as the effect brought by the pump assembly 6. , Will not repeat them here.
  • the present invention is described by taking the impeller 67 rotating clockwise as an example, this is not restrictive.
  • the motor may also be set to make the impeller 67 rotate counterclockwise.
  • the bending direction of the blade 672 and the figure In 10 the bending direction of the blade 672 is opposite, but the bending direction of the blade 672 in this arrangement is still the same as the rotating direction of the motor, that is, the impeller 67 is still the backward curved impeller 67.
  • the embodiment of the present invention takes the pump device with dual water outlets as an example, it can be understood that the impeller in the present invention can be applied to a pump assembly having one, three, four or more water outlets, Both can achieve the purpose of increasing pump flow and improving hydraulic performance of pump components.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种泵组件（6）及配置有该泵组件（6）的洗涤设备，泵组件（6）包括泵体（61），其形成有进水腔（611）和至少一个排水腔（612），进水腔（611）和排水腔（612）交汇并因此形成交汇部（613）；叶轮（67），其设置在排水腔（612）内，叶轮（67）包括轮盘（671）和位于轮盘（671）一侧的多个叶片（672）；其中，在与叶轮（67）轴线平行的方向上，交汇部（613）与叶片（672）上边缘（6721，6723）之间形成防泄压通道，以便提高出水口（64，65）的流量。

Description

泵组件及配置有该泵组件的洗涤设备 技术领域
本发明涉及泵装置领域，具体涉及一种泵组件及配置有该泵组件的洗涤设备。
背景技术
水泵作为洗衣机必不可少的动力装置，其重要性不言而喻。现有的洗衣机泵为永磁同步电机驱动的交流泵，基本转速为3000转/分钟，排水流量为每分钟20L左右，虽然价格便宜，但排水流量较低，应用在洗衣机的排水系统或循环喷淋系统中水力性能较差。
为提高洗衣机循环喷淋程序中的喷淋效果，部分洗衣机机型配置了带有无刷直流电机的排水泵或循环泵，此类泵装置能根据洗衣机的运行状况调节转速，例如实现3000转/分钟、4500转/分钟、6000转/分钟等多种转速，实现排水流量为每分钟40-120L左右，甚至更高的排水流量，进而提高了泵的水力性能。但是此类泵装置的价格昂贵，且较永磁同步电机多了一个控制盒，应用在洗衣机中需要更大的安装空间。
相应地，本领域需要一种新的泵组件来解决上述问题。
发明内容
为了解决现有技术中的上述问题，即为了解决现有洗衣机的泵装置排水量低、水力性能差的问题，本发明的第一方面提供了一种泵组件，该泵组件包括：泵体，其形成有进水腔和至少一个排水腔，所述进水腔和所述排水腔交汇并因此形成交汇部，所述泵体上设有与所述进水腔连通的进水口和与所述排水腔连通的出水口；叶轮，其设置在所述排水腔内，所述叶轮包括轮盘和位于所述轮盘一侧的多个叶片；驱动部件，其与所述叶轮连接，用于驱动所述叶轮旋转；其中，在与所述叶轮轴线平行的方向上，所述交汇部与叶片上边缘之间形成防泄压通道，以便提高所述出水口的流量。
在上述泵组件的优选技术方案中，所述叶片上边缘形成有峰 部，所述峰部与所述交汇部之间的通道为所述防泄压通道。
在上述泵组件的优选技术方案中，所述叶轮包括中轴，多个所述叶片均连接到所述中轴并因此形成交线，所述交线的高度低于所述轮盘盘面至所述叶片上边缘的高度。
在上述泵组件的优选技术方案中，所述交汇部包括向所述排水腔内延伸的环状凸起，所述环状凸起与所述叶片上边缘之间的通道为所述防泄压通道。
在上述泵组件的优选技术方案中，所述防泄压通道的宽度为0～4mm。
在上述泵组件的优选技术方案中，所述防泄压通道的宽度为2～3mm。
在上述泵组件的优选技术方案中，所述叶轮为后弯叶轮。
在上述泵组件的优选技术方案中，所述叶片的出口角为0～60°。
在上述泵组件的优选技术方案中，所述叶片的出口角为15～60°。
本领域技术人员能够理解的是，在本发明的优选技术方案中，通过在叶片上边缘设置峰部，并且/或者在进水腔和排水腔交汇处设置朝向排水腔的环状凸起，将峰部与环状凸起临近设置，使叶片上边缘与交汇部之间仅保持极小的间隙并因此形成防泄压通道，这样能有效阻碍水从叶片上边缘与排水腔内壁面之间的空隙中通过，保证进水腔中绝大部分的水从叶片之间形成的流道排出，进而有效避免因叶片与泵腔内壁面之间的间隙过大而导致的泄压泄流，从而提高泵的排水流量和水力性能。
进一步地，该泵组件作为洗衣机的排水泵使用时，能有效提高洗衣机的排水效率；该泵组件作为洗衣机的循环泵使用时，能有效加快水的循环速度，增强循环水对衣物的喷淋压力，从而提高洗衣机的洗净效果。
进一步地，通过将叶片上边缘设置成自中轴起逐渐爬升，至峰部后逐渐下降的丘状结构，且将位于中轴处的叶片的上边缘的高度设 置为最低，这样能有效增大进入排水腔的水流量，进一步提高泵的排水压力与排水量。
进一步地，通过将防泄压通道的宽度设置为2～3mm，既能为运转中的叶轮提供足够的位移空间，又避免因间隙太小而对加工精度的要求提高，使得泵组件实现了防泄压效果的同时避免了增加加工成本。
进一步地，通过采用后弯叶轮并将出口角限制在15～60°，能有效增大泵组件的输出压力，从而更好地提升泵流量。
本发明的另一方面还提供了一种洗涤设备，该洗涤设备包括至少一个上述任一项技术方案中的泵组件。
可以理解的是，本发明中的洗涤设备具备上述泵组件的所有技术效果，在此不再赘述。
附图说明
下面参照附图并结合滚筒洗衣机来描述本发明的优选实施方式。附图中：
图1为本发明的滚筒洗衣机的第一种实施方式，其中示出了排水泵与循环泵共用一个泵体的情形；
图2为图1中的滚筒洗衣机的正视示意图；
图3为本发明的滚筒洗衣机的第二种实施方式，其中示出了排水泵与循环泵相独立的情形；
图4为本发明的泵组件的等轴侧视示意图，其中示出了泵组件的第一种实施方式；
图5为图4中的泵组件的俯视示意图；
图6为图4中的泵组件的正视示意图；
图7为图5中的A-A向剖视示意图；
图8为本发明的电机和叶轮的装配示意图；
图9为图8的正视示意图；
图10为图8的俯视示意图；
图11为本发明的叶轮的结构示意图；
图12为图11的正视示意图；
附图标记列表：
1、壳体；2、外筒；3、环形腔；4、密封窗垫；5、减震器；6、泵组件；61、泵体；611、进水腔；612、第一排水腔；613、交汇部；6131、环状凸起；62、第一电机；621、泵轴；63、第二电机；64、第二出水口；65、第一出水口；66、进水口；67、叶轮；671、轮盘；6711、平衡孔；672、叶片；6721、叶片第一上边缘；6722、峰部；6723、叶片第二上边缘；68、电机座；681、隔离板；682、环形密封圈；7、循环管；8、进水管；9、排水管。
具体实施方式
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。例如，虽然下述的实施方式是结合滚筒洗衣机来解释说明的，但是，这并不是限制性的，本发明的技术方案同样适用于其他洗涤设备，例如波轮洗衣机、洗碗机、洗干一体机等，这种应用对象的改变并不偏离本发明的原理和范围。
另外，为了更好地说明本发明，在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解，没有某些具体细节，本发明同样可以实施。在一些实例中，对于本领域技术人员熟知的滚筒洗衣机中的外筒、内筒的运转、洗衣机的减震机构等未作详细描述，以便于凸显本发明的主旨。
基于背景技术指出的现有洗衣机的泵装置排水量低、水力性能差的问题，本发明提供了一种泵组件，旨在提高泵组件的排水量，提高泵装置的水力性能。
参照图1-图12，图1为本发明的滚筒洗衣机的第一种实施方式，其中示出了排水泵与循环泵共用一个泵体的情形；图2为图1中的滚筒洗衣机的正视示意图；图3为本发明的滚筒洗衣机的第二种实施方式，其中示出了排水泵与循环泵相独立的情形；图4为本发明的泵组件的等轴侧视示意图，其中示出了泵组件的第一种实施方式；图5为图4中的泵组件的俯视示意图；图6为图4中的泵组件的正视示意图；图7为图5中的A-A向剖视示意图；图8为本发明的电机和叶轮的装配示意 图；图9为图8的正视示意图；图10为图8的俯视示意图；图11为本发明的叶轮的结构示意图；图12为图11的正视示意图。
参照图1和图2，本实施例以滚筒洗衣机为例，该滚筒洗衣机具有壳体1，外筒2设置在壳体1内，内筒可旋转地设置在外筒2中，外筒2上方与壳体1之间的空间内设置有吊簧，外筒2下方与壳体1之间设置有减震器5，吊簧和减震器5共同实现内外筒的减震。洗衣机前面板上设有观察窗，用于观察内筒的内环境。观察窗的周向设有环形腔3，环形腔3的内周设有密封窗垫4和若干喷嘴，环形腔与洗衣机的循环管7连通，从而使循环管7输送的洗涤用水能通过喷嘴喷淋至内筒中的衣物上。
继续参照图1和图2，泵组件6位于洗衣机机体的右下方，当然泵组件的位置是示意性的，也可以位于外筒下方的其他位置。泵组件6包括泵体61、第一电机62和第二电机63，第一电机62和第二电机63均连接到泵体上。泵体61形成有泵腔，泵体61上设有与泵腔连通的进水口66，第一出水口65和第二出水口，从而使泵组件6能实现两路排水。进水口66与进水管8的一端连通，进水管8的另一端连接到外筒2的出水口，外筒2内的水能通过进水管8进入泵腔内。第一出水口65与洗衣机中的排水管9连通，排水管9用于将外筒2中的水排出至机体外，第二出水口64与洗衣机中的循环管7连通，循环管7用于将从外筒2中泵出的洗涤用水循环输送至外筒2中。
参照图3，图3示出了本发明的滚筒洗衣机的第二种实施方式。与图1中技术方案不同的是，本实施例中的滚筒洗衣机，采用了两个本发明中的泵组件6，单个泵组件仅设置有一个出水口，使得泵组件能分别作为洗衣机的排水泵或循环泵使用。如图3，外筒2出水口连接有一个三通管道，三通管道的两个分支管道分别形成排水泵的进水管8和循环泵的进水管8，两个进水管8连接到各自泵组件6的进水口66，泵腔形成有进水腔611和一个排水腔，排水腔与出水口连通。位于洗衣机左侧的泵组件6为排水泵，其出水口连接洗衣机的排水管9；位于洗衣机右侧的泵组件6为循环泵，其出水口连接洗衣机的循环管7。
参照图4-图6，具体地，以图1中的洗衣机配置的泵组件为例，该泵组件6包括泵体61。泵体61形成有泵腔，泵腔包括进水腔611、 第一排水腔612和第二排水腔。泵体61设置有进水口66、第一出水口65和第二出水口64，进水口66与进水腔611连通，第一出水口65与第一排水腔612连通，第二出水口64与第二排水腔连通。
继续参照图4，该泵组件6还包括驱动部件。驱动部件用于驱动泵腔内的叶轮67旋转。本实施例中的驱动部件包括第一电机62和第二电机63。第一电机62和第二电机63均为永磁同步电机，转速为3000转/分钟。
参照图7-图9，以第一电机62与叶轮67的连接为例。叶轮67与泵轴621固定连接，第一电机62驱动泵轴621旋转，进而带动叶轮67旋转。第一电机62通过电机座68固定连接到泵体61上。叶轮67与电机座68之间通过隔离板681隔离，隔离板681与泵体61之间通过环形密封圈682密封，防止泵体61的水泄漏。
当然，用于连接驱动部件和泵体61的连接构件除电机座68外，还可以为其他连接结构。
参照图5、图7、图11和图12，该泵组件6还包括叶轮67，叶轮67包括叶片672，下面以设置在第一排水腔612内的叶轮67为例。
参照图7，进水腔611和第一排水腔612交汇并因此形成交汇部613。在与叶轮67轴中轴平行的方向上，交汇部613与叶片上边缘之间形成防泄压通道，以便提高出水口的流量。
替代性地，参照图7，交汇部613的边缘向排水腔内延伸形成环状凸起6131，环状凸起6131与叶片上边缘为平面的叶轮67(未图示)临近设置并形成防泄压通道，以实现防泄压效果。
替代性地，当叶片上边缘具有峰部6722，且交汇部613具有环状凸起6131时，叶片672峰部6722与环状凸起6131之间形成间隙极小的防泄压通道，能起到更好的防泄压效果。
在本发明的优选技术方案中，通过在叶片上边缘设置峰部，并且/或者在进水腔和排水腔交汇处设置朝向排水腔的环状凸起，将峰部与环状凸起临近设置，使叶片上边缘与交汇部之间仅保持极小的间隙并因此形成防泄压通道，这样能有效阻碍水从叶片上边缘与排水腔内壁面之间的空隙中通过，保证进水腔中绝大部分的水从叶片之间形成的流道 排出，进而有效避免因叶片与泵腔内壁面之间的间隙过大而导致的泄压泄流，从而提高泵的排水流量和水力性能。
具体地，叶轮67包括轮盘671和位于轮盘671一侧的多个叶片672。多个叶片672与轮盘671可一体成型，也可通过粘接或插接等方式将单独的叶片672固定到轮盘671上。一体成型的叶轮67强度更大，且方便加工。轮盘671上开设有多个平衡孔6711，用于平衡轮盘671两侧的压力，同时还能降低叶轮67运转过程中的噪音。轮盘671上与叶片672相背的一侧还设有加强筋，以增强轮盘671的强度。
参照图7和图11，本实施例中的叶轮67的叶片上边形成有峰部6722，叶片上边缘因峰部6722的存在分成了连续的两段，分别为叶片第一上边缘6721和叶片第二上边缘6723，叶片第一上边缘6721和叶片第二上边缘6723交汇处为峰部6722。叶片第一上边缘6721自叶轮67的中轴处起始，逐渐向上爬升至峰部6722，然后又逐渐向下延伸形成叶片第二上边缘6723。峰部6722与交汇部613之间具有极小的间隙，并因此形成防泄压通道。该间隙极小，能有效阻碍水从叶片上边缘与排水腔的腔壁之间的空隙中通过，使进水腔611中的水只能通过叶片672之间形成的流道排出，有效避免了因叶片672与泵腔之间的间隙过大而导致的泄压泄流，从而有效提高出水口的泵压和泵流量。
继续参照图11，多个叶片672均连接到中轴并因此形成交线，优选地，交线的高度低于轮盘671盘面至叶片上边缘的高度，即，叶片第一上边缘6721靠近中轴的位置距离轮盘671盘面最近，峰部6722距离轮盘671盘面最远，叶片第二上边缘6723距离轮盘671盘面的高度介于叶片672始端和峰部6722之间。这样，既能在靠近叶片672尾部的位置与泵腔上的交汇部613形成防泄压通道，又能使叶轮67上边缘形成一个内凹的曲面，从而增大进水量，进而提升泵的排水量和水力性能。在使用现有永磁同步电机的同时，使泵的排水量增加三倍甚至更多。
叶轮67采用后弯叶轮67，有助于提高排水压力。后弯叶轮67即叶片672弯曲方向与叶轮67旋转方向相反，且叶片672出口角小于90°的叶轮，采用后弯叶轮67能实现较好的增压效果，能有效增大泵流量。
优选地，叶片672的出口角设置为0～60°，更优选地，叶片672的出口角设置为15～60°。通过将叶片672出口角设置为15～60°，既 能保证进水腔611的水能沿叶片672间的流道顺利排出，同时还不会因叶片672弯曲过大对排水过程造成阻碍，顺利实现排水流量的增加。
进一步地，防泄压通道的宽度为0～4mm，进一步优选地，防泄压通道的宽度为2～3mm，这样对泵体61和叶片672加工工艺的要求不会太高，在低成本加工的前提下，能提升泵的流量。
本发明的另一方面还提供了一种滚筒洗衣机，参照图1-图3，本发明中的洗衣机配置有前述任一个技术方案中的泵组件6，其效果与泵组件6带来的效果相同，在此不再赘述。
需要说明的是，本发明虽然是以叶轮67顺时针旋转为例进行说明的，但这并不是限制性的，电机也可以设置为使得叶轮67逆时针方向旋转，此时叶片672弯曲方向与图10中叶片672弯曲方向相反，但此种设置方式的叶片672弯曲方向与电机旋转方向仍然相同，即叶轮67依然为后弯叶轮67。
另外，虽然本发明实施例是以双出水口的泵装置为例的，可以理解的是，本发明中的叶轮可以应用在有一个、三个、四个甚至更多出水口的泵组件中，均能实现增大泵流量、提升泵组件水力性能的目的。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种泵组件，其特征在于，所述泵组件包括：
    泵体，其形成有进水腔和至少一个排水腔，所述进水腔和所述排水腔交汇并因此形成交汇部，所述泵体上设有与所述进水腔连通的进水口和与所述排水腔连通的出水口；
    叶轮，其设置在所述排水腔内，所述叶轮包括轮盘和位于所述轮盘一侧的多个叶片；
    驱动部件，其与所述叶轮连接，用于驱动所述叶轮旋转；
    其中，在与所述叶轮轴线平行的方向上，所述交汇部与叶片上边缘之间形成防泄压通道，以便提高所述出水口的流量。
  2. 根据权利要求1所述的泵组件，其特征在于，所述叶片上边缘形成有峰部，所述峰部与所述交汇部之间的通道为所述防泄压通道。
  3. 根据权利要求2所述的泵组件，其特征在于，所述叶轮包括中轴，多个所述叶片均连接到所述中轴并因此形成交线，所述交线的高度低于所述轮盘盘面至所述叶片上边缘的高度。
  4. 根据权利要求1-3中任一项所述的泵组件，其特征在于，所述交汇部包括向所述排水腔内延伸的环状凸起，所述环状凸起与所述叶片上边缘之间的通道为所述防泄压通道。
  5. 根据权利要求4所述的泵组件，其特征在于，所述防泄压通道的宽度为0～4mm。
  6. 根据权利要求5所述的泵组件，其特征在于，所述防泄压通道的宽度为2～3mm。
  7. 根据权利要求1所述的泵组件，其特征在于，所述叶轮为后弯叶轮。
  8. 根据权利要求7所述的泵组件，其特征在于，所述叶片的出口角为0～60°。
  9. 根据权利要求8所述的泵组件，其特征在于，所述叶片的出口角为15～60°。
  10. 一种洗涤设备，其特征在于，包括至少一个根据权利要求1-9中任一项所述的泵组件。
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