CN108661943A

CN108661943A - draining pump

Info

Publication number: CN108661943A
Application number: CN201810173707.0A
Authority: CN
Inventors: 郑连玉
Original assignee: Anhui Da Lai Electric Machine Co Ltd
Current assignee: Anhui Da Lai Electric Machine Co Ltd
Priority date: 2018-03-02
Filing date: 2018-03-02
Publication date: 2018-10-16

Abstract

The invention discloses a kind of draining pumps, including water pump shell (1), motor casing (2), impeller (3) and driving impeller (3) are rotated to realize the motor (4) of drain function, block water plate (5), it is characterised in that：The impeller (3) includes that centre is provided with the wheel shaft (31) being connect with the motor shaft of motor (4) (6), with centered on wheel shaft (31) configuration wheel shaft (31) peripheral side blade (32), and the restrictor ring (34) around upper leaf piece (32), upper leaf piece (32) transits to interconnecting piece (321) by fillet part (322a) or chamfered section (322b), and it is connected with wheel shaft (31) by interconnecting piece (321), the lower end of blade (32) is provided with lower blade (33).Draining pump provided by the present invention can guarantee its flow in limiting water level, and noise when low water level can be inhibited to work.

Description

Draining pump

Technical field

The present invention relates to a kind of draining pumps, are mounted in air conditioner more particularly to one kind, for that will condense in water pond The draining pump of condensed water discharge.

Background technology

When carrying out refrigeration operation, the moisture in air can condense and be attached to heat exchanger the indoor set of air conditioner On, then dropping onto in the condensation water pond being located at below heat exchanger slowly, cold in the condensation water pond in order to accumulate in Condensate is discharged, therefore the draining pump equipped with this suction condensed water.This draining pump is connected by the motor shaft of driving motor with impeller It is connected together, when drive motor makes impeller rotate, the water accumulated in condensation water pond will be from the water inlet quilt of water pump shell It is drawn into pump body, is discharged under the influence of centrifugal force along water pump shell inner wall.This draining pump requires to have certain Lift and flow, and use environment has it very strict noise requirements.This draining pump is public in many patents Cloth.

Water inlet is arranged in a kind of draining pump disclosed in wherein Chinese patent CN1804403A, including lower end, and on top The pump housing of water outlet, the impeller being placed in the pump housing and the motor for making impeller rotate is arranged in side, and impeller includes blade, is located at phase It short impeller between adjacent blade, the current stabilization ring for surrounding blade top outer rim and the short impeller outer edge heart and is connect with motor output shaft Wheel shaft, main, short impeller radial arrangement centered on the axle center of wheel shaft, the inner edge of blade is connected on wheel shaft, short leaf There is a distance in the inner edge of wheel with wheel shaft.There is this problems for this kind of draining pump, i.e., after condensed water enters pump body portion, open The moment for beginning to drain will produce larger noise, this is because bubble is generated out of liquid around impeller, the bubble hit leaf Wheel and water pump shell inner wall will produce noise, and the lift of this draining pump and flow are relatively low.

Chinese patent ZL95107436.9 was once disclosed a kind of draining pump technical solution, which is by lower end Suction inlet is set and the pump ontology of discharge opening is set in upper side, what is rotated freely is accommodated in the intrinsic rotary body of said pump With so that the motor of above-mentioned rotary body rotation is constituted, impeller (including big blade, the leaflet that above-mentioned rotary body has axle portion, connects axis body The components such as piece, disk are constituted).The blade of above-mentioned draining pump rotary body is generally used prismatic blade structure, and this structure is convenient for mould Tool processing and manufacturing, but there are low production efficiencies, and draining pump high, medium and low each shelves lift noise in draining cannot be taken into account, with Cause generates larger noise in individual lifts.

Chinese patent ZL01801754.1 illustrates another draining pump configuration.The drain pump impeller also uses prismatic blade shape Formula, in order to reduce noise, which is provided with condensed water collector ring in the periphery of blade.The draining pump of this structure is due to adopting The impeller of prismatic blade form is taken, workmanship efficiency is more low, and the setting of blade periphery collector ring makes blade arrange outward The efficiency of water substantially reduces.

Invention content

The purpose of the present invention is to provide one kind to solve the above problems, in the premise for ensureing higher lift and flow Under, noise is lower, is better able to meet the requirement of use environment, and the higher draining pump of production efficiency.

Draining pump provided by the invention, including water pump shell, motor casing, impeller and the driving impeller rotation are to realize draining The motor of function, block water plate, the impeller include the intermediate wheel shaft being provided with the motor axis connection of motor, and with wheel The blade in wheel shaft peripheral side is configured centered on axis, and around the restrictor ring of upper leaf piece, upper leaf piece passes through circle Corner or chamfered section transit to interconnecting piece, and are connected with wheel shaft by interconnecting piece.

The interconnecting piece and the ratio range of the height and total height on the inside of blade of taking turns shaft connection place are 0.1~0.46, The ratio range of the interconnecting piece radical length and upper leaf piece radial direction total length is 0.3~0.75.

The radian of the fillet part is π/36~π/12, and the chamfered section is 35~65 ° with horizontal angle α.

Upper leaf piece is uniformly arranged on the peripheral side of wheel shaft, and blade is preferably set to 8.

The lower end of upper leaf piece is provided with lower blade, the diameter of the lower impeller and the lower end water inlet of water pump shell Diameter ratio ranging from 0.6~0.85.

The hollow portion of motor casing, and the internal diameter of the top outer diameter and motor casing hollow portion of wheel shaft are run through in the top of the wheel shaft Ratio range be 0.6~0.9.

Gap width ranging from 1~7mm of the block water plate and motor casing end.

The motor shaft end is provided with straight knurling or hatching knurling, and is assembled with wheel shaft.

The beneficial effects of the invention are as follows：

Present invention eliminates the distance between the inner edge of short impeller and short impeller in existing draining pump and wheel shaft spaces, no Draining pump performance can be only improved, and obtains higher lift and flow, and noise is lower.

On this basis, it is further found by experiment a large amount of, repeatedly, interconnecting piece and the wheel shaft connection place of blade Height has a very big impact effect with total height on the inside of blade to noise reduction, therebetween best ratio range for 0.1~ 0.46, select the proportionate relationship of this creativeness proposed by the present invention, it is possible to reduce after condensed water is inhaled into, encounter blade institute The bubble of generation, to play the role of reducing noise.

On this basis, it is further found by experiment a large amount of, repeatedly, interconnecting piece radical length and upper leaf piece Radial total length equally has a very big impact noise reduction effect, and best ratio range is 0.3~0.75 therebetween, selection The proportionate relationship of this creativeness proposed by the present invention, after condensed water is inhaled into, after encountering blade generation bubble, bubble Flowing can generate noise than that smoothly, will not hit blade always, and condensed water can also smoothly flow to water outlet, so as to Make lower noise.

And interconnecting piece is extended through fillet part or chamfered section to top, also condensed water can be allow smoothly to flow to water outlet Mouthful, to further make lower noise.

Blade is uniformly arranged on the peripheral side of wheel shaft, although the quantity of blade is adjustable, the present invention is excellent Choosing is set as 8, the lower end of upper leaf piece is provided with lower blade, the peripheral side of upper leaf piece is provided with restrictor ring.

It can ensure that when draining pump is in running order, there is more preferably dynamic balancing, performance and noise to stablize in this way,

In addition, the ratio range of the outer diameter on the top of the wheel shaft and the internal diameter of the hollow portion is set as 0.6~ 0.9, it can further inhibit noise under the premise of not influencing startup time and the performance of draining pump in this way.

Further, the diameter ratio range of the diameter of the lower blade and the lower end water inlet of water pump shell is set as 0.6~0.85, when can not only ensure flow of the draining pump in limiting water level in this way, and low water level can be inhibited to work Noise.

The gap width range of block water plate and motor casing end is set as 1~7mm, then when the moment that draining pump is stopped, It may insure that the return water in drainpipe will not impact motor body, while reducing noise caused by return water, and meeting In the case of applying working condition, the volume of draining pump is limited.

Motor shaft end is provided with straight knurling or hatching knurling and is assembled with wheel shaft, not only simple for process, and And the two reliably combines the long-life that ensure that draining pump.

Description of the drawings

Fig. 1 is the overall structure diagram of draining pump of the present invention.

Fig. 2 is the stereogram of upper impeller of the present invention.

Fig. 3 is the stereogram of impeller lower part of the present invention.

Fig. 4 is the sectional view of impeller of the present invention.

Fig. 5 is the first structural schematic diagram of blade of the present invention.

Fig. 6 is second of structural schematic diagram of blade of the present invention.

Fig. 7 is the sectional view of motor casing of the present invention and impeller cooperation.

Fig. 8 is the sectional view of block water plate of the present invention and motor casing cooperation.

Fig. 9 is the structural schematic diagram of motor shaft of the present invention and the cooperation of impeller wheel shaft.

Figure 10 is the structural schematic diagram of motor shaft straight knurling of the present invention.

Figure 11 is the structural schematic diagram of motor shaft hatching knurling of the present invention.

In attached drawing marked as：

Water pump shell 1, motor casing 2, impeller 3, motor 4, block water plate 5, motor shaft 6, motor casing hollow portion 21, wheel shaft 31, Blade 32, lower blade 33, restrictor ring 34, interconnecting piece 321, straight knurling 61, the net being connected with wheel shaft 31 on blade 32 Line annular knurl 62.

Specific implementation mode

In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing The present invention is described in further detail.

As shown in Figure 1, a kind of draining pump in air conditioner, including water pump shell (1), motor casing (2), impeller (3) With driving impeller (3) rotation to realize the motor (4) of drain function, block water plate (5), the impeller (3) is intermediate to be set It is equipped with the wheel shaft (31) being connect with the motor shaft of motor (4) (6), the top of the wheel shaft (31) is in motor casing (2) Empty portion (21).Motor casing top is provided with block water plate (5), and the gap width A ranging from 1 of block water plate (5) and motor casing (2) end~ 7mm (as shown in Figure 8).

The further details of structure for showing impeller of the present invention (3) in Fig. 2 and Fig. 3, as shown in Figures 2 and 3, the impeller (3) include wheel shaft (31), and configure the blade (32) in wheel shaft (31) peripheral side centered on wheel shaft (31), and around institute The restrictor ring (34) for stating blade (32) is provided with lower blade (33) in the lower end of upper leaf piece (32).The lower blade (33) diameter ratio of diameter and the lower end water inlet of water pump shell (1) ranges preferably from 0.6~0.85, and ratio range is more excellent It is selected as 0.7~0.8.

Upper leaf piece (32) is uniformly arranged on the peripheral side of wheel shaft (31), and it is 8 that upper leaf piece (32), which is preferable to provide, It is a.

And as shown in figure 4, the inside of upper leaf piece (32) is connected by interconnecting piece (321) with wheel shaft (31), institute The ratio range for stating total height (H2) on the inside of the height (H1) and blade (32) of interconnecting piece (321) and wheel shaft (31) junction is 0.1~0.46, preferred ratio range is 0.15~0.4, and preferred ratio range is 0.20~0.38, best ratio model Enclose is 0.25~0.3.

The ratio range of the radial total length (L2) of interconnecting piece (321) radical length (L1) and upper leaf piece (32) is 0.3~0.75, preferred ratio range is 0.35~0.65, and preferred ratio range is 0.4~0.6, best ratio model Enclose is 0.45~0.55.

As shown in figure 5, the even width of upper leaf piece (32) in the vertical direction.But it is preferably designed as, interconnecting piece (321) most narrow with the junction of wheel shaft (31), extend to top and gradually broadens.Upper leaf piece (32) passes through fillet part (322a) transits to interconnecting piece (321), and is connected with wheel shaft (31) by interconnecting piece (321), the preferred fillet part The radian of (322a) is π/36~π/12.

Can also as shown in fig. 6, upper leaf piece (32) transits to interconnecting piece (321) by chamfered section (322b), and with Wheel shaft (31) is connected, and the preferred chamfered section (322b) is 35~65 ° with horizontal angle α.

As shown in fig. 7, the hollow portion (21) of motor casing (2) is run through on the top of the wheel shaft (31), the wheel shaft (31) The outer diameter (R1) on top and the ratio range of the internal diameter (R2) of the hollow portion (21) are preferably 0.6~0.9, and ratio range is more excellent It is selected as 0.7~0.85, optimum range is 0.75~0.8.

As shown in figs. 9-11, motor shaft (6) shaft end be provided with straight knurling (61) or hatching knurling (62) and with wheel Axis (31) is assembled.

Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention Within the scope of shield.

Claims

1. a kind of draining pump, including water pump shell (1), motor casing (2), impeller (3) and driving impeller (3) rotation are with the row of realization The motor (4) of water function, block water plate (5), it is characterised in that：The impeller (3) includes that centre is provided with and motor (4) Motor shaft (6) connection wheel shaft (31), and centered on wheel shaft (31) configuration wheel shaft (31) peripheral side blade (32), And the restrictor ring (34) around upper leaf piece (32), upper leaf piece (32) pass through fillet part (322a) or chamfered section (322b) transits to interconnecting piece (321), and is connected with wheel shaft (31) by interconnecting piece (321), the interconnecting piece (321) and wheel The ratio range of the height (H1) of axis (31) junction and total height (H2) on the inside of blade (32) is 0.1~0.46, the company Socket part (321) radical length (L1) and the ratio range of the radial total length (L2) of upper leaf piece (32) are 0.3~0.75.

2. draining pump according to claim 1, it is characterised in that：The radian of the fillet part (322a) be π/36~π/ 12, the chamfered section (322b) is 35~65 ° with horizontal angle α.

3. draining pump according to claim 1, it is characterised in that：Upper leaf piece (32) is uniformly arranged on wheel shaft (31) Peripheral side, upper leaf piece (32) are set as 8.

4. draining pump according to claim 1, it is characterised in that：The lower end of upper leaf piece (32) is provided with inferior lobe The diameter ratio ranging from 0.6 of piece (33), the diameter of the lower blade (33) and the lower end water inlet of water pump shell (1)~ 0.85。

5. draining pump according to claim 1, it is characterised in that：The top of the wheel shaft (31) is through motor casing (2) Hollow portion (21), the outer diameter (R1) on the top of the wheel shaft (31) and the ratio range of the internal diameter (R2) of the hollow portion (21) are 0.6~0.9.

6. draining pump according to claim 1, it is characterised in that：The gap of the block water plate (5) and motor casing (2) end Ranging from 1~7mm of value.

7. draining pump according to claim 1, it is characterised in that：Motor shaft (6) shaft end is provided with straight knurling (61) or hatching knurling (62) it is assembled, and with wheel shaft (31).