Search

CN-120466212-B - Electronic water pump with variable-angle impeller

CN120466212BCN 120466212 BCN120466212 BCN 120466212BCN-120466212-B

Abstract

The invention relates to an electronic water pump with an angle-variable impeller, which comprises a pump shell assembly and an angle-variable impeller assembly, wherein the pump shell assembly comprises a pump shell base and a pump cover, a cylindrical auxiliary flow cavity is arranged at the front end of the base, an annular main flow cavity is arranged in the pump cover, the annular main flow cavity and the pump cover form a liquid flow cavity, a liquid outlet pipe is arranged on the side wall of the main flow cavity, a liquid inlet pipe is arranged in the axial middle part of the main flow cavity, the centrifugal impeller is rotationally connected with the base, the electromagnetic assembly is used for driving the angle-variable impeller assembly, a driving part comprises a driving ring corresponding to the end face of the auxiliary flow cavity of the pump shell assembly, a plurality of driving mechanisms are arranged on the driving ring, each mechanism comprises a plurality of driving windings, a driven ring is connected with the inner wall of the auxiliary flow cavity in a floating manner, a plurality of driving permanent magnets are arranged on the driving ring corresponding to the driving ring, and a blade part is formed by a plurality of elastic material guide blades fixed between the auxiliary flow cavity and the driven ring through the interaction of the driving windings and the driving permanent magnets.

Inventors

  • SHAO WANSHU
  • SHAO ZUOYOU
  • DOU XINMING

Assignees

  • 温州日益机电科技有限公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (7)

  1. 1. An electronic water pump with a variable angle impeller, comprising: The pump comprises a pump shell assembly, wherein the pump shell assembly comprises a pump shell base (1) and a pump cover (6), a cylindrical auxiliary flow cavity (12) is arranged at the front end of the pump shell base (1), an annular main flow cavity (13) is arranged in the pump cover (6), the main flow cavity (13) and the auxiliary flow cavity (12) form a liquid flow cavity, a liquid outlet pipe (7) is arranged on the side wall of the main flow cavity (13), a liquid inlet pipe (8) is arranged in the axial middle of the main flow cavity (13), a centrifugal impeller (10) is rotationally connected to the pump shell base (1), the centrifugal impeller (10) is arranged in the auxiliary flow cavity (12) in a penetrating manner, and the centrifugal impeller (10) is driven by an electromagnetic assembly which is arranged in the pump shell base (1) in a sealing manner; the variable-angle impeller is characterized by further comprising an angle-variable impeller assembly; The variable angle impeller assembly includes: the driving part comprises a driving ring (17) arranged on the end surface of the pump shell assembly corresponding to the auxiliary flow cavity (12), a plurality of driving mechanisms are arranged on the driving ring (17) in an annular array manner, each driving mechanism comprises a plurality of driving windings (18), the driving part also comprises a driven ring (19) which is connected to the inner wall of the auxiliary flow cavity (12) in a floating manner, and a plurality of driving permanent magnets (20) corresponding to the driving windings (18) are arranged on the driven ring (19) in an annular array manner; The device comprises a blade part, wherein the blade part comprises a plurality of guide blades (15) which are fixed between a secondary flow cavity (12) and a driven ring (19) in an annular array, the guide blades (15) are made of elastic materials, a plurality of floating seats (23) are arranged in an annular array of an inner ring of the driven ring (19), floating grooves with longitudinal axes perpendicular to the plane of the driven ring (19) are arranged in the floating seats (23), and the tail ends of the guide blades (15) are connected in the floating grooves in a sliding mode.
  2. 2. An electronic water pump with variable angle impeller according to claim 1, characterized in that the centrifugal impeller (10) comprises a rotary support part connected with the electromagnetic assembly, a vane mechanism is arranged above the rotary support part, a first annular structural groove (28) is arranged between the bottom of the rotary support part and the end surface of the auxiliary flow cavity (12), and the floating seat (23) is arranged in the first structural groove (28).
  3. 3. The electronic water pump with the variable-angle impeller according to claim 2, wherein a pushing seat (24) is fixedly connected to the inner ring of the auxiliary flow cavity (12) corresponding to the outer ring of the rotary supporting part, an inner sliding gap is arranged between the inner ring of the pushing seat (24) and the rotary supporting part, an outer sliding gap is arranged between the outer ring of the pushing seat (24) and the driven ring (19), a pushing ring (25) is further arranged at the top end position of the outer ring of the pushing seat (24), a limiting ring (26) is fixed above the driven ring (19) through an array of floating seats (23), a wave reed (27) is arranged between the limiting ring (26) and the pushing ring (25), the wave reed (27) is in sliding contact with the limiting ring (26) and the pushing ring (25), and the height of the floating groove is larger than the tail end of the guide vane (15).
  4. 4. An electronic water pump with an angle-variable impeller according to claim 1, characterized in that a rotary groove is arranged at the bottom of the auxiliary flow chamber (12), a driven ring (19) is slidably connected in the rotary groove, and a driving ring (17) is inlaid at the bottom of the rotary groove.
  5. 5. The electronic water pump with the variable-angle impeller as claimed in claim 1, wherein a second structural groove (29) is formed in the inner ring of the driven ring (19), a first positioning ring (22) is arranged at the bottom of the second structural groove (29), a supporting protrusion (21) extending towards the second structural groove (29) is formed in the inner ring of the auxiliary flow cavity (12), the supporting protrusion (21) is arranged on the second positioning ring which is embedded with the first positioning ring (22), a plurality of embedded protrusions are arranged on the first positioning ring (22) and the second positioning ring in an annular array, and the cross section of each embedded protrusion is triangular or arc-shaped.
  6. 6. The electronic water pump with the variable-angle impeller as claimed in claim 1, wherein a plurality of embedded seats (14) are arranged on the outer ring annular array of the auxiliary flow cavity (12), a liquid inlet gap is arranged between the array axis of the embedded seats (14) and the outer ring boundary of the auxiliary flow cavity (12), an embedded groove is arranged on one side, facing the center of the auxiliary flow cavity (12), of the embedded seats (14), and the outer ring of the guide vane (15) is fixedly connected into the embedded groove.
  7. 7. The electronic water pump with the variable-angle impeller as claimed in claim 1, wherein both end parts of the guide vane (15) are provided with a bending part, and the bending part comprises an arc-shaped stress releasing part with an arc degree larger than 180 degrees.

Description

Electronic water pump with variable-angle impeller Technical Field The invention relates to an electronic water pump with an angle-variable impeller, and belongs to the field of automobile accessory equipment. Background The electronic water pump is used as a key component of an automobile cooling system in the traditional automobiles and new energy automobiles, the electronic water pump in the prior art is mainly used for controlling the flow rate of cooling liquid in the automobiles by adjusting the rotating speed of an impeller and is used for controlling the cooling intensity under the cold automobile, hot automobile and different load working conditions, but when the rotating speed of the electronic water pump is too low, the output kinetic energy of the electronic water pump is also influenced, the pressure in a pipeline is further influenced, and the pressure in the pipeline is too low, so that the cooling liquid at a local position cannot flow in real time due to the flowing resistance in the pipeline, and the situation of local overheating possibly occurs. Disclosure of Invention The invention aims to solve the technical problem that the pressure of a cooling pipeline is too low due to the fact that the rotating speed of an electronic water pump is too low in the prior art, and provides the electronic water pump with the variable-angle impeller. The technical scheme adopted for solving the technical problems is as follows: an electronic water pump with a variable angle impeller, comprising: The pump shell assembly comprises a pump shell base and a pump cover, wherein a cylindrical auxiliary flow cavity is arranged at the front end of the pump shell base, an annular main flow cavity is arranged in the pump cover, the main flow cavity and the auxiliary flow cavity form a liquid flow cavity, a liquid outlet pipe is arranged on the side wall of the main flow cavity, a liquid inlet pipe is arranged in the axial middle of the main flow cavity, a centrifugal impeller is rotationally connected in the pump shell base, the centrifugal impeller penetrates through the auxiliary flow cavity, and the centrifugal impeller is driven by an electromagnetic assembly which is hermetically arranged in the pump shell base; the variable-angle impeller assembly is also included; The variable angle impeller assembly includes: the driving part comprises a driving ring arranged on the end face of the pump shell assembly corresponding to the auxiliary flow cavity, a plurality of driving mechanisms are arranged on the driving ring in an annular array manner, each driving mechanism comprises a plurality of driving windings, and the driving part also comprises a driven ring which is connected to the inner wall of the auxiliary flow cavity in a floating manner, wherein a plurality of driving permanent magnets corresponding to the driving windings are arranged on the driven ring in an annular array manner; And the blade part comprises a plurality of guide blades which are fixed between the auxiliary flow cavity and the driven ring in an annular array, and the guide blades are made of elastic materials. As a further improvement of the invention, a plurality of floating seats are arranged in an annular array of the inner ring of the driven ring, floating grooves with longitudinal axes perpendicular to the plane of the driven ring are arranged in the floating seats, and the tail ends of the guide blades are connected in the floating grooves in a sliding manner; The floating groove structure can compensate the change of radial distance brought by the deflection process of the guide blade, and prevent the plastic deformation of the guide blade or the damage of the connecting mechanism caused by the over-stretching or the over-extrusion of the guide blade. As a further improvement of the invention, the centrifugal impeller comprises a rotary supporting part connected with the electromagnetic assembly, a vane mechanism is arranged above the rotary supporting part, an annular first structural groove is arranged between the bottom of the rotary supporting part and the end surface of the auxiliary flow cavity completely, and the floating seat is arranged in the first structural groove; the first structure groove can enable the floating seat structure not to interfere liquid discharged from the impeller, so that the flow efficiency of the liquid is improved, and the flow resistance of the whole structure is reduced. As a further improvement of the invention, a pushing seat is fixedly connected with the position of the inner ring of the auxiliary flow cavity corresponding to the outer ring of the rotary supporting part, a sliding gap is arranged between the inner ring of the pushing seat and the rotary supporting part, and an outer sliding gap is arranged between the outer ring of the pushing seat and the driven ring; The pushing seat can limit the axial floating position of the driven ring, meanwhile, the driven ring is extruded through the