CN209892498U - Impeller of open water pump - Google Patents
Impeller of open water pump Download PDFInfo
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- CN209892498U CN209892498U CN201720868037.5U CN201720868037U CN209892498U CN 209892498 U CN209892498 U CN 209892498U CN 201720868037 U CN201720868037 U CN 201720868037U CN 209892498 U CN209892498 U CN 209892498U
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Abstract
The utility model discloses an impeller of open water pump, including the axle that is located the center and along the first blade of two at least edge axial extensions of circumference evenly distributed on the global of axle, first blade divide into interconnect's the first upper segment as centrifugal section and the first lower segment as axial compressor section in the axial, its characterized in that: the height ratio of the first lower section to the first upper section of the first blade is less than 1. The height ratio of the lower section to the upper section of the full blade is set to be less than 1, so that the flow section of a larger centrifugal section of the impeller can be ensured, and water obtained by pumping of an axial flow section of the impeller can quickly flow into the centrifugal section to accelerate; through setting up the splitter blade that the bottom is higher than full blade, can ensure that impeller the latter half has sufficient through-flow area and the better constraint performance of impeller upper segment to the fluid.
Description
Technical Field
The utility model relates to a water pump, especially an impeller of open water pump.
Background
Before the water pump works, the water pump and the water inlet pipe must be filled with water, then the liquid obtains energy under the action of inertial centrifugal force by means of the impeller rotating at high speed, so that the internal pressure of the liquid can be increased, when the impeller rotates fast, the blades promote the water to rotate fast, the water flies out of the impeller under the action of the centrifugal force, after the water in the water pump is thrown out, the central part of the impeller forms a vacuum area, then the water in a water source enters the water inlet pipe under the action of atmospheric pressure (or water pressure), and continuous water pumping can be realized without circulation. The water pump has the advantages of simple structure, easy operation, easy flow regulation, suitability for conveying various materials with special properties and the like, and is widely applied to various fields, such as various industrial places, and various household appliances, such as washing machines, dish washing machines, air conditioners and the like.
In order to facilitate the processing, manufacturing and installation of the water pump, an open type water pump is provided at present, the open type water pump breaks through the problems of complex structure, high processing difficulty and the like of the traditional water pump, and the advantages of simplicity in installation and manufacturing and the like are favored.
The disclosed open water pump for dish washing machine, such as the water tank dish washing machine water pump disclosed in Chinese patent with application number 201620744144.2, comprises a motor and a motor shaft, wherein the upper and lower ends of the motor shaft extend out of the motor, the upper part of the motor is provided with a spray arm, the upper end of the motor shaft is connected with an upper impeller, the upper impeller comprises an upper half impeller and a lower half impeller which are separately arranged up and down, the upper half impeller is uniformly distributed with a plurality of vertical water retaining blades along the circumferential direction, the lower half impeller is uniformly distributed with a plurality of inclined water retaining blades along the circumferential direction, the upper end of the upper half impeller is also provided with a water retaining end face, when the upper impeller rotates along with the motor shaft, the inclined water retaining blades of the lower half impeller absorb water and pump washing water upwards along the water flow channel between two adjacent inclined water retaining blades, the vertical water retaining blades of the upper half impeller throw water and throw washing water in a water flow channel between two adjacent vertical water retaining blades outwards to enter the spraying arm.
In the dish washer, the higher water drawing level easily causes the washing liquid foam to enter the pump along with the water flow, and influences the water drawing effect of the pump and the washing capacity of the dish washer, so the existing water pump is still to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the problem to above-mentioned prior art exists provides an impeller of open water pump that improves flow and hydrologic cycle speed.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: an impeller of open water pump, includes the axle that is located the center and along the first blade of at least two axial extensions of circumference evenly distributed on the global of axle, first blade divide into interconnect in the axial as the first upper segment of centrifugation section and as the first lower segment of axial compressor section, its characterized in that: the height ratio of the first lower section to the first upper section of the first blade is less than 1.
Preferably, the height ratio of the first lower section to the first upper section of the first blade is 0.75, 0.5 or 0.25.
In order to take into account the following performance of fluid to the impeller and the through-flow area of impeller, improve pump efficiency, still be provided with the second blade between two adjacent first blades, the height of second blade is less than the height of first blade, and the bottom of second blade is higher than the bottom of first blade.
The partial blade hypomere of reposition of redundant personnel blade disappearance can ensure that the impeller latter half has sufficient through-flow area and the better constraint performance of impeller upper segment to the fluid, according to the utility model discloses an aspect, the second blade also falls into in the axial as the second upper segment of centrifugation section, as the second hypomere of axial compressor section, the height that highly is less than the first hypomere of first blade of the second hypomere of second blade, and the bottom of the second hypomere of second blade is higher than the bottom of the first hypomere of first blade.
Splitter blade lacks partial blade hypomere, can ensure that the impeller the latter half has sufficient through-flow area and the better constraint performance of impeller upper segment to the fluid, according to the utility model discloses a further aspect, the second blade only has the second upper segment as centrifugal section.
In order to ensure the flow area and the constraint effect on fluid, the first blades and the second blades are uniformly arranged at intervals, the included angle between each first blade and each adjacent second blade is alpha, and the value range of alpha is 36-60 degrees.
In order to enable the axial flow section to better draw water and the centrifugal section to better output the water, the first upper section of the first blade is perpendicular to the circumferential surface of the shaft, the first lower section of the first blade is gradually and smoothly bent on the circumferential surface of the shaft along the rotating direction of the impeller, and the bent part is twisted in the rotating direction.
In order to reduce the flow speed and change the water flow direction, the periphery of the top of the shaft is turned outwards in the radial direction to form a circle of arc-shaped surface.
Compared with the prior art, the utility model has the advantages of: the height ratio of the lower section to the upper section of the full blade is set to be less than 1, so that the flow section of a larger centrifugal section of the impeller can be ensured, and water obtained by pumping of an axial flow section of the impeller can quickly flow into the centrifugal section to accelerate; through setting up the splitter blade that the bottom is higher than full blade, can ensure that impeller the latter half has sufficient through-flow area and the better constraint performance of impeller upper segment to the fluid.
Drawings
Fig. 1 is a schematic view of a first embodiment of an impeller of the present invention;
fig. 2 is a schematic view of a second embodiment of the impeller of the present invention;
fig. 3 is a schematic view of a third embodiment of the impeller of the present invention;
fig. 4 is a schematic view of a fourth embodiment of the impeller of the present invention;
FIG. 5 is a top view of the impeller of FIG. 4;
fig. 6 is a schematic view of a fifth embodiment of the impeller of the present invention;
fig. 7 is a schematic view of a sixth embodiment of the impeller of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Referring to fig. 1, an impeller of an open type water pump includes a central shaft 11 and at least two first blades 12 extending in an axial direction uniformly distributed in a circumferential direction on a circumferential surface of the shaft 11, and a lower end of the shaft 11 is adapted to be connected to an output shaft (not shown) of a motor for driving the water pump so that the impeller 1 is driven to rotate when the motor rotates.
The first blade 12 may be divided into two sections in the axial direction, i.e., a first upper section 121 of the first blade 12 as a centrifugal section, and a first lower section 122 of the first blade 12 as an axial flow section, the first upper section 121 and the first lower section 122 being integrally formed. The first upper section 121 of the first vane 12 extends along the axial plane of the shaft 11 while being perpendicular to the outer circumferential surface of the shaft 11, and the first lower section 122 of the first vane 12 is smoothly curved gradually along the rotational direction of the impeller at least at the bottom on the circumferential surface of the shaft 11 while the curved portion is twisted in the curved direction. The arrangement of the first blades 12 can enable the bottom of the first blades 12 to lift water upwards when the first blades 12 rotate, so that the water can flow into the centrifugal section along the axial direction of the flow channel between the adjacent first blades 12 after the axial flow section of the impeller applies work, the water flow is sprayed into the flow channel of the spray arm under the action of the centrifugal force, the axial flow section continuously draws water to supply to the centrifugal section, and the process is repeated. Even if the impeller is not in the closed space, water can still be sucked without the action of vacuum, and the water is sent from the bottom to the top along with the rotation of the impeller.
The height ratio of the first lower section 122 to the first upper section 121 of the first blade 12 is smaller than 1, so that the flow section of the centrifugal section of the impeller is large, and water obtained by pumping of the axial flow section of the impeller can quickly flow into the centrifugal section to accelerate. In the present embodiment, it is preferable that the height ratio of the first lower section 122 to the first upper section 121 of the first blade 12 is 0.75.
In the above, the first lower section 122 of the first blade 12 is smoothly curved at the bottom, and it will be understood by those skilled in the art that the curve may also occur throughout the first lower section 122, as long as a smoothly curved flow path is formed to lift the water flow from the lowermost end upwards.
The top periphery of the axle 11 of impeller is radially outwards overturned and is formed a round arcwall face 111, consequently, when rivers are followed the rotation of impeller by the bottom to the top when moving, not only the velocity of flow reduces gradually, moreover because the effect of arcwall face 111, the vertical direction can be followed to the flow direction of rivers, becomes transversely at the top of axle 11 time to arcwall face 111 plays the effect of direction to rivers, makes rivers also can change the flow direction under the condition of not sealing up the impeller. Preferably, the top surface of the first upper section 121 of the first vane 12 may also form an everted arc surface having the same arc as the arc surface 111 at the top of the shaft 11.
Example two
Referring to fig. 2, a second embodiment of the impeller of the present invention is different from the first embodiment in that the height ratio of the first lower section 122 to the first upper section 121 of the first blade 12 is 0.5.
EXAMPLE III
Referring to fig. 3, a third embodiment of the impeller of the present invention is different from the first embodiment in that the height ratio of the first lower section 122 and the first upper section 121 of the first blade 12 is 0.25.
Example four
For the pump, more impeller blades can better restrict the fluid, so that the motion characteristic of the fluid and the impeller have better following performance, and the efficiency is improved. However, the arrangement of more vanes affects the flow area of the fluid, so that the flow rate of the pump is reduced under the condition of the same rotating speed, and the cleaning capacity of the dishwasher is affected.
Therefore, it is important to increase the flow rate of the pump while ensuring that the impeller has a better restriction capability to the fluid, so as to greatly improve the working performance of the pump of the dishwasher. Referring to fig. 4, a fourth embodiment of the impeller of the present invention, in the present embodiment, the difference from the first embodiment is that a second blade 13 is further disposed between two adjacent first blades 12, that is, the first blades 12 and the second blades 13 are circumferentially spaced and uniformly arranged. The first blade 12 is a full blade, and the second blade 13 is a splitter blade. In the present embodiment, the height ratio of the first lower section 122 and the first upper section 121 of the first blade 12 is 0.75.
The second blade 13 is also divided in the axial direction into a second upper section 131, which is a centrifugal section, and a second lower section 132, which is an axial flow section, the first upper section 121 and the first upper section 131 being similar in shape, and the first lower section 122 and the second lower section 132 being similar in shape. Wherein the height of the second lower section 132 of the second blade 13 is smaller than the height of the first lower section 122 of the first blade 12, i.e. the bottom of the second lower section 132 of the second blade 13 is higher than the bottom of the first lower section 122 of the first blade 12.
Referring to fig. 5, in order to ensure the flow area and the fluid binding effect, and to reasonably control the number of the blades, the included angle α between the first blade 12 and the adjacent second blade 13 (the included angle between the first upper section 121 of the first blade 12 and the second upper section 131 of the adjacent second blade 13) is preferably in the range of 36 ° to 60 °, and more preferably 45 °.
Through such setting, can compromise the following performance of fluid to the impeller (the constraint of blade to the fluid) and the through-flow area of impeller, improve pump efficiency, splitter blade lacks partial blade hypomere (axial compressor section), and the guarantee impeller the latter half has sufficient through-flow area and the better constraint performance of impeller upper segment to the fluid.
EXAMPLE five
Referring to fig. 6, for the fifth embodiment of the impeller of the present invention, in this embodiment, the difference from the fourth embodiment is that the second blade 13 only has the second upper segment 131 as the centrifugal segment, which not only can consider that the area of the impeller through which water flows can also realize the staged work of water flows, and the binding force of the upper segment of the impeller to water flows is stronger.
EXAMPLE six
Referring to fig. 7, a sixth embodiment of the impeller of the present invention is different from the fourth embodiment in that the included angle α between the first blade 12 and the adjacent second blade 13 is 60 °.
Claims (7)
1. An impeller of an open water pump, comprising a shaft (11) at the center and at least two first blades (12) extending in the axial direction, which are uniformly distributed in the circumferential direction on the circumferential surface of the shaft (11), the first blades (12) being divided in the axial direction into a first upper section (121) as a centrifugal section and a first lower section (122) as an axial flow section, which are connected to each other, characterized in that: the height ratio of the first lower section (122) to the first upper section (121) of each first blade (12) is smaller than 1, a second blade (13) is further arranged between every two adjacent first blades (12), the height of the second blade (13) is smaller than that of each first blade (12), and the bottom of the second blade (13) is higher than that of each first blade (12).
2. The impeller of an open water pump according to claim 1, wherein: the ratio of the height of the first lower section (122) to the first upper section (121) of the first blade (12) is 0.75, 0.5 or 0.25.
3. The impeller of an open water pump according to claim 1 or 2, wherein: the second blade (13) is also divided in the axial direction into a second upper section (131) as a centrifugal section, a second lower section (132) as an axial flow section, the height of the second lower section (132) of the second blade (13) is smaller than the height of the first lower section (122) of the first blade (12), and the bottom of the second lower section (132) of the second blade (13) is higher than the bottom of the first lower section (122) of the first blade (12).
4. The impeller of an open water pump according to claim 1 or 2, wherein: the second blade (13) has only a second upper section (131) as a centrifugal section.
5. The impeller of an open water pump according to claim 1 or 2, wherein: the first blades (12) and the second blades (13) are uniformly arranged at intervals, the included angle between each first blade (12) and each adjacent second blade (13) is alpha, and the value range of alpha is 36-60 degrees.
6. The impeller of an open water pump according to claim 1 or 2, wherein: the first upper section (121) of the first blade (12) is perpendicular to the circumferential surface of the shaft (11), the first lower section (122) of the first blade (12) is smoothly curved gradually in the rotational direction of the impeller on the circumferential surface of the shaft (11), and the curved portion is twisted in the rotational direction.
7. The impeller of an open water pump according to claim 1, wherein: the top periphery of the shaft (11) is turned outwards in the radial direction to form a circle of arc-shaped surface (111).
Priority Applications (1)
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CN201720868037.5U CN209892498U (en) | 2017-07-18 | 2017-07-18 | Impeller of open water pump |
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CN201720868037.5U CN209892498U (en) | 2017-07-18 | 2017-07-18 | Impeller of open water pump |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108005949A (en) * | 2017-07-18 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of impeller of open water pump |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108005949A (en) * | 2017-07-18 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of impeller of open water pump |
CN108005949B (en) * | 2017-07-18 | 2024-05-14 | 宁波方太厨具有限公司 | Impeller of open type water pump |
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