阅读说明：本技术 一种叶轮、离心泵及车辆 (A kind of impeller, centrifugal pump and vehicle ) 是由 刘金科 熊健 张博 郑广华 武圆 南晓峰 于 2018-05-18 设计创作，主要内容包括：本发明涉及一种叶轮、离心泵及车辆。车辆包括车体,所述车体上安装有循环冷却和加热系统,所述循环冷却和加热系统包括离心泵,所述离心泵包括泵体,所述泵体包括蜗壳以及安装在蜗壳内的叶轮,所述叶轮包括安装板,所述安装板的前侧安装有多个前叶片,且多个前叶片在安装板上周向间隔分布,所述前叶片包角为α,且106°≤α≤111°,所述前叶片出口安放角为β,且35°≤β≤38°,所述前叶片出口宽度为d,且4mm≤d≤5mm,所述蜗壳的进口宽度为b,且4.5mm≤b≤5.5mm,所述蜗壳的隔舌安放角为θ,且25.5°≤θ≤26.5°。该离心泵运用于小流量高扬程场合时具有较高的泵效,可用于车辆上的冷却和热循环系统中,增强了车辆中的冷却和热循环系统的性能。(The present invention relates to a kind of impeller, centrifugal pump and vehicles.Vehicle includes car body, circulating cooling and heating system are installed on the car body, the circulating cooling and heating system include centrifugal pump, the centrifugal pump includes the pump housing, the pump housing includes spiral case and the impeller that is mounted in spiral case, the impeller includes mounting plate, the installed in front of the mounting plate has multiple front vanes, and multiple front vanes circumferentially-spaced distribution on a mounting board, the front vane cornerite is α, and 106 °≤α≤111 °, front vane outlet laying angle is β, and 35 °≤β≤38 °, the front vane exit width is d, and 4mm≤d≤5mm, the entrance width of the spiral case is b, and 4.5mm≤b≤5.5mm, the cut water laying angle of the spiral case is θ, and 25.5 °≤θ≤26.5 °.The centrifugal pump applies to pump efficiency with higher when low-flow high-lift occasion, can be used in cooling and heat circulating system on vehicle, enhances the cooling in vehicle and the performance of heat circulating system.)

1. a kind of impeller, including mounting plate, the installed in front of the mounting plate has multiple front vanes, and multiple front vanes are being installed It is circumferentially spaced apart on plate, it is characterised in that: the front vane cornerite is α, and 106 °≤α≤111 °, the front vane export Laying angle is β, and 35 °≤β≤38 °, and the front vane exit width is d, and 4mm≤d≤5mm.

2. impeller according to claim 1, it is characterised in that: be equipped with multiple be used for front vane on rear side of the mounting plate Fixed back blade on a mounting board, the back blade are equipped with the interconnecting piece connecting with front vane.

3. impeller according to claim 2, it is characterised in that: the multiple back blade is in radiation along mounting plate center outward Shape setting, and multiple back blades are uniformly distributed on a mounting board.

4. described in any item impellers according to claim 1 ~ 3, it is characterised in that: the front vane wrap angle sigma is 110 °, before described Blade exit laying angle β is 36 °, and the front vane exit width d is 4.5mm.

5. described in any item impellers according to claim 1 ~ 3, it is characterised in that: the impeller is double shrouded wheel.

6. a kind of centrifugal pump, including the pump housing, the pump housing includes spiral case and the impeller that is mounted in spiral case, and the impeller includes Mounting plate, the installed in front of the mounting plate have multiple front vanes, and the circumferentially-spaced distribution on a mounting board of multiple front vanes, Be characterized in that: the front vane cornerite is α, and 106 °≤α≤111 °, the front vane export laying angle as β, and 35 °≤β≤ 38 °, the front vane exit width is d, and 4mm≤d≤5mm, and the entrance width of the spiral case is b, and 4.5mm≤b≤ 5.5mm, the cut water laying angle of the spiral case are θ, and 25.5 °≤θ≤26.5 °.

7. centrifugal pump according to claim 6, it is characterised in that: be equipped with multiple be used for frontal lobe on rear side of the mounting plate The fixed back blade on a mounting board of piece, the back blade are equipped with the interconnecting piece connecting with front vane.

8. centrifugal pump according to claim 7, it is characterised in that: the multiple back blade is in spoke along mounting plate center outward Shape setting is penetrated, and multiple back blades are uniformly distributed on a mounting board.

9. according to the described in any item centrifugal pumps of claim 6 ~ 8, it is characterised in that: the front vane wrap angle sigma is 110 °, described It is 36 ° that front vane, which exports laying angle β, and the front vane exit width d is 4.5mm.

10. a kind of vehicle, including car body, circulating cooling and heating system be installed on the car body, the circulating cooling and plus Hot systems include centrifugal pump, and the centrifugal pump includes the pump housing, and the pump housing includes spiral case and the impeller that is mounted in spiral case, institute Stating impeller includes mounting plate, and the installed in front of the mounting plate has multiple front vanes, and multiple front vanes are circumferential on a mounting board It is spaced apart, it is characterised in that: the front vane cornerite is α, and 106 °≤α≤111 °, front vane outlet laying angle are β, and 35 °≤β≤38 °, the front vane exit width is d, and 4mm≤d≤5mm, the entrance width of the spiral case are b, and 4.5mm≤b≤5.5mm, the cut water laying angle of the spiral case are θ, and 25.5 °≤θ≤26.5 °.

Technical field

The present invention relates to a kind of impeller, centrifugal pump and vehicles.

Background technique

Need installation to cool and heat system inside new-energy automobile at present, heat transferring medium in cyclic process by heating or Heat dissipation forms the liquid of relatively-high temperature or low temperature, and heat transferring medium is then conveyed each the zero of new-energy automobile by centrifugal pump again Component achievees the purpose that transmit heat by heat exchange, to make each system of new-energy automobile at reliable and stable temperature Longtime running.Centrifugal pump as the power source for driving small flow heat transferring medium flowing, need to overcome pipeline to damage along journey within the system The unfavorable factors such as mistake, local resistance loss, alternate position spike.Therefore the high-efficiency point of the centrifugal pump in new-energy automobile need to be stablized in small stream It measures at high lift, but centrifugal pump currently on the market is mostly low lift electric pump (highest lift about 10m), is difficult to meet heat exchanging The growth requirement of the higher and higher new-energy automobile of performance requirement.

Summary of the invention

The purpose of the present invention is to provide a kind of centrifugal pump suitable for low-flow high-lift occasion, can be improved centrifugation The impeller of the working efficiency of pump；The object of the invention is also to provide a kind of centrifugal pumps and vehicle for installing above-mentioned impeller.

To achieve the above object, the technical solution of impeller of the invention is:

A kind of impeller includes cover board, and the installed in front of the cover board has multiple front vanes, and multiple front vanes are on the cover board Circumferentially-spaced distribution, the front vane cornerite is α, and 106 °≤α≤111 °, the front vane export laying angle as β, and 35 ° ≤ β≤38 °, the front vane exit width are d, and 4mm≤d≤5mm.

It is unfavorable for improving water conservancy efficiency the utility model has the advantages that excessive front vane cornerite increases front vane friction area；Too small Front vane cornerite reduces front vane to the control ability and liquid stream stability of fluid, is also unfavorable for improving the efficiency of pump.Guarantee Front vane is carried out while front vane laying angle is adjusted draws shape, it is any to control front vane cornerite size, it is counted on this basis It is worth simulation test.Through many experiments discovery as 106 °≤α≤111 °, 35 °≤β≤38 ° and 4mm≤d≤5mm, the impeller Pump efficiency with higher when suitable for low-flow high-lift occasion.

Specifically, being equipped with multiple be used for the fixed back blade on a mounting board of front vane, institute on rear side of the mounting plate It states back blade and is equipped with the interconnecting piece connecting with front vane.Be arranged back blade help to enhance front vane fixation on a mounting board it is strong Degree.

Further, the multiple back blade is radially arranged outward along mounting plate center, and multiple back blades are being pacified It is uniformly distributed in loading board.

Further, the front vane wrap angle sigma is 110 °, and the front vane outlet laying angle β is 36 °, the front vane Exit width d is 4.5mm.

Further, the impeller is double shrouded wheel.

The technical solution of centrifugal pump of the invention is:

A kind of centrifugal pump includes the pump housing, and the pump housing includes spiral case and the impeller that is mounted in spiral case, the impeller packet Mounting plate is included, the installed in front of the mounting plate has multiple front vanes, and the circumferentially-spaced distribution on a mounting board of multiple front vanes, The front vane cornerite is α, and 106 °≤α≤111 °, and front vane outlet laying angle is β, and 35 °≤β≤38 °, described Front vane exit width is d, and 4mm≤d≤5mm, and the entrance width of the spiral case is b, and 4.5mm≤b≤5.5mm, described The cut water laying angle of spiral case is θ, and 25.5 °≤θ≤26.5 °.

It is unfavorable for improving water conservancy efficiency the utility model has the advantages that excessive front vane cornerite increases front vane friction area；Too small Front vane cornerite reduces front vane to the control ability and liquid stream stability of fluid, is also unfavorable for improving the efficiency of pump.Guarantee Front vane is carried out while front vane laying angle is adjusted draws shape, it is any to control front vane cornerite size, it is counted on this basis It is worth simulation test.By many experiments discovery when impeller parameters be 106 °≤α≤111 °, 35 °≤β≤38 ° and 4mm≤d≤ 5mm, spiral case parameter is 4.5mm≤b≤5.5mm, and when 25.5 °≤θ≤26.5 °, centrifugal pump pump efficiency with higher and is raised Journey.

Specifically, being equipped with multiple be used for the fixed back blade on a mounting board of front vane, institute on rear side of the mounting plate It states back blade and is equipped with the interconnecting piece connecting with front vane.Be arranged back blade help to enhance front vane fixation on a mounting board it is strong Degree.

Further, the multiple back blade is radially arranged outward along mounting plate center, and multiple back blades are being pacified It is uniformly distributed in loading board.

Further, the front vane wrap angle sigma is 110 °, and the front vane outlet laying angle β is 36 °, the front vane Exit width d is 4.5mm.

Further, the impeller is double shrouded wheel.

The technical solution of vehicle of the invention is:

A kind of vehicle includes car body, is equipped with circulating cooling and heating system on the car body, the circulating cooling and plus Hot systems include centrifugal pump, and the centrifugal pump includes the pump housing, and the pump housing includes spiral case and the impeller that is mounted in spiral case, institute Stating impeller includes mounting plate, and the installed in front of the mounting plate has multiple front vanes, and multiple front vanes are circumferential on a mounting board It is spaced apart, the front vane cornerite is α, and 106 °≤α≤111 °, and front vane outlet laying angle is β, and 35 °≤β ≤ 38 °, the front vane exit width is d, and 4mm≤d≤5mm, and the entrance width of the spiral case is b, and 4.5mm≤b≤ 5.5mm, the cut water laying angle of the spiral case are θ, and 25.5 °≤θ≤26.5 °.

It is unfavorable for improving water conservancy efficiency the utility model has the advantages that excessive front vane cornerite increases front vane friction area；Too small Front vane cornerite reduces front vane to the control ability and liquid stream stability of fluid, is also unfavorable for improving the efficiency of pump.Guarantee Front vane is carried out while front vane laying angle is adjusted draws shape, it is any to control front vane cornerite size, it is counted on this basis It is worth simulation test.By many experiments discovery when impeller parameters be 106 °≤α≤111 °, 35 °≤β≤38 ° and 4mm≤d≤ 5mm, spiral case parameter are 4.5mm≤b≤5.5mm, and when 25.5 °≤θ≤26.5 °, which is suitable for low-flow high-lift Pump efficiency with higher when occasion enhances cooling and thermal cycle in vehicle in the cooling and heat circulating system on vehicle The performance of system.

Specifically, being equipped with multiple be used for the fixed back blade on a mounting board of front vane, institute on rear side of the mounting plate It states back blade and is equipped with the interconnecting piece connecting with front vane.Be arranged back blade help to enhance front vane fixation on a mounting board it is strong Degree.

Further, the multiple back blade is radially arranged outward along mounting plate center, and multiple back blades are being pacified It is uniformly distributed in loading board.

Further, the front vane wrap angle sigma is 110 °, and the front vane outlet laying angle β is 36 °, the front vane Exit width d is 4.5mm.

Further, the impeller is double shrouded wheel.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the centrifugal pump in the embodiment of vehicle of the invention；

Fig. 2 is the main view of the front end pump housing in Fig. 1；

Fig. 3 is the right view of the front end pump housing in Fig. 1；

Fig. 4 is the left view of the front end pump housing in Fig. 1；

Fig. 5 is the waterpower figure of spiral case；

Fig. 6 is the schematic cross-section of spiral case；

Fig. 7 is the structural schematic diagram of impeller in Fig. 1；

Fig. 8 is the sectional view along A-A in Fig. 7；

Fig. 9 is the right view of the impeller in Fig. 7；

In attached drawing: 1, the front end pump housing；11, spiral case；12, inlet；13, liquid outlet；2, impeller；21, front vane；22, it carries on the back Blade；23, front shroud；24, back shroud；3, the rear end pump housing；4, impeller shaft；5, bearing；6, motor；7, motor connector.

Specific embodiment

Embodiments of the present invention are described further with reference to the accompanying drawing.

The specific embodiment of vehicle of the invention, including car body are equipped with circulating cooling and heating system in car body, recycle It cools and heats system and heat transferring medium is pumped to by interior each components by centrifugal pump, entire vehicle is made to be in normal temperature model Enclose interior work.As shown in Figures 1 to 9, centrifugal pump includes the front end pump housing 1, impeller 2, the rear end pump housing 3, impeller shaft 4, bearing 5, electricity The components such as machine 6 and motor plug connector 7.

Spiral case 11 is installed inside the front end pump housing 1, there is helical cavity road in spiral case 11, helical cavity and front end pump Inlet 12, liquid outlet 13 on body 1 are connected to.Liquid outlet 13 in the present embodiment is located at the top of the front end pump housing 1, inlet 12 Positioned at the center side position of the front end pump housing 1.

The section of spiral case 11 in the present embodiment be it is trapezoidal, the benefit designed in this way is runner along direction of rotation outlet gradually Increase, so that flow velocity is more uniform.Referring to Fig. 6 it is found that there are 11 runners, 11 runners are respectively I-I in spiral case 11 Runner, II-II runner ... Ⅹ I-Ⅹ I runners.The entrance width b of spiral case 11 in the present embodiment is 4.5~5.5mm, and snail The line and horizontal angle of 11 cut water of shell and 11 center of spiral case, i.e. the cut water laying angle θ of spiral case 11 are more than or equal to 25.5 ° simultaneously Less than or equal to 26.5 °, certainly, cut water laying angle θ using design is in this way obtained on the basis of many experiments.Cut water laying angle Preferably the helical cavity of rotation can be smoothly connected with outlet using above-mentioned design, reduce while guaranteed efficiency every Impact loss at tongue.

Impeller 2 in the present embodiment is double shrouded wheel, and impeller 2 is including front shroud 23, back shroud 24 and is located at front/rear cover Front vane between plate.Back shroud 24 is circular slab, and the installed in front of back shroud 24 has seven front vanes 21, seven front vanes 21 It is smooth streamlined structure and the indexing of seven front vanes 21 is distributed on round back shroud 24, front vane protrusion Side is working face.Front vane 21 uses smooth streamlined structure, not only has splendid cavitation resistive property, Er Qieji Hydraulic loss caused by the big reduction separation of flow, impact, directional velocity and size variation.Front vane 21 is using this design so that leaf It takes turns 2 hydraulic efficiencies and is up to 62%, 21 working face curve flattening of front vane is smooth to have high transfer efficiency, i.e. mechanical energy converts For the potential energy of liquid.In order to apply bigger rotary force to sucking liquid, front vane 21 uses front vane 21 in the present embodiment Vertical.To make output flow control in suitable range, while by output power in maximum magnitude, pass through reality Preferred 21 exit width d of front vane is tested within the scope of 4~5mm.The blade tip point of front vane 21 and the line of cover plate central and frontal lobe It is α that the blade root point of piece 21 and the line of cover plate central, which form angle, i.e. subtended angle of blade；Tangent line and lid of the front vane 21 in blade root point Angle of the plate between the tangent line of blade root point is β, i.e. blade angle.It is unfavorable that excessive subtended angle of blade increases blade rubbing area In raising water conservancy efficiency；Too small subtended angle of blade reduces blade to the control ability and liquid stream stability of fluid, is also unfavorable for Improve the efficiency of pump.Guarantee to carry out Vane drawing while blade angle is adjusted, it is any to control subtended angle of blade size, in this base Pass through numerical experiments on plinth.Through many experiments discovery when 106 °≤α≤111 ° and 35 °≤β≤38 °, front vane The whirlpool area of 21 working faces disappears, and the liquid in 2 runner of impeller is almost along 21 surface smooth flow of front vane, runner diffusion Small, hydraulic efficiency is high, can significantly provide the lift of centrifugal pump using the impeller 2.

In order to keep front vane 21 more firm on back shroud 24, the rear side of the back shroud 24 of impeller 2 has back blade 22. Back blade 22 in the present embodiment is six, and six back blades 22 index arrangement on the cover board, and radially with cover plate central Arrangement.For six back blades 22 in the present embodiment using symmetrical arrangement, experiment finds that the arrangement can reduce impeller 2 40% axial force generated when work, this greatly improves the stability of 2 bearing 5 of impeller.

Centrifugal pump in the present invention is used cooperatively by above-mentioned impeller 2 with spiral case 11, not only stablizes the high-efficiency point of centrifugal pump At low-flow high-lift, and hydraulic efficiency is high, greatly reduces the unnecessary waterpower due to caused by the Hydraulic Design defect Loss.Centrifugal pump in the present embodiment also has the pump housing rear end connecting with pump housing nose threads, and the pump housing is equipped with electricity in rear end The impeller shaft 4 of machine 6, motor 6 is mounted on the pump housing of rear end by bearing 5, and motor 6 is connect by impeller shaft 4 with impeller 2, rear end Motor connector 7 is installed on the shell of the pump housing 3, the setting of motor 6 and motor connector 7 so that centrifugal pump also by electric power Driving, and motor 6 and impeller 2, the integrated design of spiral case 11 greatly improve centrifugal pump ease of use.

The front vane cornerite of the impeller in the present invention, front vane laying angle and front vane thickness are verified below, tested Card method is using CFD (computational fluid dynamics) method that is usual in industry and approving.For impeller design parameter of the invention Design value, i.e. 106 °≤front vane wrap angle sigma≤111 °, 35 °≤front vane laying angle β≤38 °, 4mm≤front vane exit width d ≤ 5mm establishes nine models and is verified.

Model A: the front vane cornerite of impeller is 90 ° in this model, and front vane laying angle is 36 °, front vane exit width For 4.5mm；

Model B: the front vane cornerite of impeller is 130 ° in this model, and front vane laying angle is 36 °, front vane exit width For 4.5mm；

MODEL C: the front vane cornerite of impeller is 110 ° in this model, and front vane laying angle is 36 °, front vane exit width For 4.5mm；

Model D: the front vane cornerite of impeller is 110 ° in this model, and front vane laying angle is 36 °, front vane exit width For 3.5mm；

Model E: the front vane cornerite of impeller is 110 ° in this model, and front vane laying angle is 36 °, front vane exit width For 5.5mm；

Model F: the front vane cornerite of impeller is 110 ° in this model, and front vane laying angle is 45 °, front vane exit width For 4.5mm；

Model G: the front vane cornerite of impeller is 110 ° in this model, and front vane laying angle is 30 °, front vane exit width For 4.5mm；

Model H: the front vane cornerite of impeller is 106 ° in this model, and front vane laying angle is 35 °, front vane exit width For 4mm；

Model I: the front vane cornerite of impeller is 111 ° in this model, and front vane laying angle is 38 °, front vane exit width For 5mm；

Above-mentioned nine impeller patterns are tested for the property respectively, described in test result is as follows table.

Contrast model A and MODEL C and Model B and MODEL C find that front vane cornerite is less than 106 ° and front vane respectively Cornerite, which is greater than 111 °, can all cause lift and efficiency to reduce.Contrast model C and model D has found that front vane exit width is less than 4mm, lift and efficiency reduce.Contrast model C and model E find that front vane exit width will lead to power greater than 5mm and be more than 300W, which is difficult to and efficiency interior suitable for interior heat-exchange system, to be reduced；Contrast model C and model F discovery, front vane laying angle Will lead to power greater than 38 ° is more than that 300W is difficult to suitable in interior heat-exchange system；Contrast model C and model G has found, preceding Blade angle will lead to centrifugal pump lift and efficiency less than 35 ° and reduce.Reference model H and model I can be seen that power and pump Effect can reach high levels.

In conclusion 106 °≤front vane wrap angle sigma≤111 °, 35 °≤blade angle β≤38 °, 4≤blade exit are wide In the case where spending d≤5mm, centrifugal pump cools and heats system suitable for the car of low-flow high-lift.

The entrance width to the spiral case in the present invention and cut water laying angle are verified below.For spiral case of the invention Design parameter design value, i.e. 25.5 °≤cut water laying angle are θ≤26.5 °, 4.5mm≤entrance width b≤5.5mm, establish seven A model is verified.

Model A: the entrance width of spiral case is 4mm in this model, and cut water laying angle is 26 °；

Model B: the entrance width of spiral case is 6mm in this model, and cut water laying angle is 26 °；

MODEL C: the entrance width of spiral case is 5mm in this model, and cut water laying angle is 26 °；

Model D: the entrance width of spiral case is 5mm in this model, and cut water laying angle is 25 °；

Model E: the entrance width of spiral case is 5mm in this model, and cut water laying angle is 27 °；

Model F: the entrance width of spiral case is 4.5mm in this model, and cut water laying angle is 25.5 °；

Model G: the entrance width of spiral case is 5.5mm in this model, and cut water laying angle is 26.5 °；

Above-mentioned seven spiral case models are tested for the property respectively, described in test result is as follows table.

Contrast model A and MODEL C find that entrance width is less than when 4.5mm, and efficiency of centrifugal pump is lower respectively；Compare mould Type B and MODEL C are found, when entrance width is greater than 5.5, the lift of centrifugal pump is excessively high to be difficult to suitable for interior heat-exchange system It is interior.Contrast model C and model D has found, when cut water laying angle is less than 25.5 °, the power of centrifugal pump is reduced；Contrast model C and mould Type E discovery, when cut water laying angle is greater than 26.5 °, the power of centrifugal pump is reduced；Reference model F and model G can be seen that power with Pump efficiency can reach high levels.

In conclusion 25.5 °≤cut water laying angle be θ≤26.5 °, 4.5mm≤entrance width b≤5.5mm, the case where Under, centrifugal pump cools and heats system suitable for the car of low-flow high-lift.

The specific embodiment of impeller of the invention, the impeller in the present embodiment and the impeller in the embodiment of above-mentioned vehicle Structure is identical, repeats no more.

The specific embodiment of centrifugal pump of the invention, centrifugal pump in the present embodiment and in the embodiment of above-mentioned vehicle from The structure of heart pump is identical, repeats no more.