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KR-20260064814-A - MOTOR PUMP AND HOUSING ASSEMBLY THEREFOR

KR20260064814AKR 20260064814 AKR20260064814 AKR 20260064814AKR-20260064814-A

Abstract

A motor pump according to the present invention comprises: a first housing; an impeller accommodated in the first housing; a magnet confined to the impeller and arranged to form a magnetic flux in a direction parallel to the rotation axis of the impeller; a second housing coupled to the first housing; a circuit board accommodated in the second housing and having a coil pattern formed thereon capable of generating a magnetic flux in a direction parallel to the rotation axis to interact with the magnet by electrical control; and a diaphragm disposed on the upper part of the circuit board and formed to block fluid directed toward the lower part of the circuit board.

Inventors

  • 김형민
  • 권구성
  • 김준섭

Assignees

  • 주식회사 코아비스

Dates

Publication Date
20260508
Application Date
20241029

Claims (13)

  1. First housing; An impeller accommodated in the first housing above; A magnet that is constrained to the impeller and arranged to form a magnetic flux in a direction parallel to the rotation axis of the impeller; A second housing coupled to the first housing above; A circuit board having a coil pattern formed thereon, which is accommodated in the second housing and capable of generating a magnetic flux in a direction parallel to the axis of rotation to interact with the magnet by electrical control; and A motor pump comprising a diaphragm disposed on the upper part of the circuit board and formed to block fluid directed toward the lower part of the circuit board.
  2. In paragraph 1, The above magnet is positioned only between the impeller and the diaphragm, in a motor pump.
  3. In paragraph 1, The above magnet is integrally attached to the above impeller by overmolding, in a motor pump.
  4. In paragraph 3, A motor pump further comprising a first yoke disposed between the magnet and the impeller.
  5. In paragraph 1, A motor pump further comprising a second yoke disposed on the lower surface of the circuit board.
  6. In paragraph 1, A motor pump in which the edges of the first housing and the second housing are joined by fusion.
  7. In paragraph 1, The above diaphragm and the above second housing are attached by fusion, forming a motor pump.
  8. In paragraph 1, The above diaphragm is made of a non-magnetic material, and is a motor pump.
  9. In paragraph 1, The above diaphragm is a motor pump formed of resin material.
  10. In paragraph 1, The above plate is a motor pump comprising stainless steel.
  11. In paragraph 1, A motor pump further comprising at least one sealing disposed between the above-mentioned plate and the above-mentioned first housing, on the center side of the plate or on the edge side of the plate.
  12. Housing; An impeller accommodated in the above housing; A magnet that is constrained to the impeller and arranged to form a magnetic flux in a direction parallel to the rotation axis of the impeller; A circuit board having a coil pattern formed thereon capable of generating a magnetic flux in a direction parallel to the axis of rotation to interact with the magnet by electrical control within the housing; and A motor pump comprising a diaphragm attached to the housing at the upper portion of the circuit board and formed to block fluid directed toward the lower portion of the circuit board.
  13. A second housing formed to be coupled to a first housing in which a rotor containing a magnet is accommodated; A circuit board having a coil pattern formed thereon, which is accommodated inside the second housing and is capable of generating a magnetic flux in a direction parallel to the rotation axis of the rotor to interact with the rotor by electrical control; and A housing assembly for a motor pump, comprising a diaphragm attached to the second housing and positioned above the circuit board and capable of sealing the internal space of the circuit board and the second housing.

Description

Motor pump and housing assembly for motor pump The present invention relates to a motor pump and a housing assembly for a motor pump. A motor pump is a fluid machine that combines a motor, which converts electrical energy into mechanical energy, and a pump, which moves fluid using the driving force of the motor. In the automotive sector, motor pumps are applied to various systems and play a crucial role in improving vehicle performance, fuel efficiency, and reducing emissions. Compared to pumps that utilize engine driving force, motor pumps produce less noise and vibration and are environmentally friendly as they use electrical energy. With the emergence of electric and autonomous vehicles, the applications of motor pumps installed in automobiles are expanding to include cooling systems, air conditioning and heating systems, fuel supply systems, oil supply systems, braking systems, and steering systems. Pumps vary depending on their structure and operating principles, and regarding electric motors, another key component of motor pumps, axial flux motors (AFM) are sometimes adopted in addition to traditional radial flux motors (RFMs) due to their advantages in terms of efficiency, output, and weight reduction. * Related prior art WO 2023-082002 A1 (Published May 19, 2023) US 10141804 B2 (Registered Nov 27, 2018) KR 10-1237023 B1 (Published on Feb. 19, 2013) FIG. 1 is a schematic external perspective view of a motor pump according to an example of the present invention. FIG. 2 is a schematic perspective view showing the motor pump of FIG. 1 viewed from the opposite direction. FIG. 3 is an exemplary cross-sectional view of the motor pump of FIG. 1. FIG. 4 is an exemplary exploded perspective view of the motor pump of FIG. 1. Figure 5 is a cross-sectional view showing an enlarged portion of the motor pump of Figure 3. FIG. 6 is a conceptual diagram illustrating the cooling action by the fluid when the motor pump related to the present invention is in operation. Hereinafter, a motor pump and a housing assembly for a motor pump related to the present invention will be described in detail with reference to the attached drawings. The details shown in the drawings are for convenience of the present invention and do not reflect actual dimensions; furthermore, the possibility that the size or thickness may be exaggerated or reduced to highlight the features of the invention cannot be ruled out. The present invention is not limited to the configurations and methods of the embodiments described in the disclosure below. Various modifications to the embodiments may be made to replaceable equivalents, and all or part of each embodiment may be optionally combined. The terms used in this specification and claims are not limited to their dictionary meanings alone, but may be appropriately defined and understood accordingly to best describe the invention. The terms "comprising" or "consisting of" as used in the specification or claims refer to the existence of a combination of parts, components, steps, etc., and should be understood as not excluding in advance the possibility of combining additional parts, components, or steps. If it is stated that a specific component and another component are "connected" or "combined," it should be understood to include cases where these components are "directly" connected or combined with each other, as well as cases where another component is interposed between them to connect or combine "indirectly." Conversely, if it is stated that a specific component and another component are "directly connected" or "directly combined," it should be understood that no other component exists between these components. FIGS. 1 and FIGS. 2 show the schematic appearance of an exemplary motor pump (100) according to the present invention. The illustrated motor pump (100) is in the form of an assembly of an upper housing (110) and a lower housing (140) having a generally disc-shaped appearance. Here, 'upper' and 'lower' are named for convenience with reference to FIG. 1, and the direction and position of the motor pump (100) may differ when the actual motor pump (100) is mounted on an object of application. The fluid pumped through the motor pump (100) may be a liquid. In this disclosure, a motor pump (100) for pumping water as a liquid will be described. An exemplary object of application for such a motor pump (100) may be a thermal management system of a vehicle or a coolant circulation pump for achieving this. The upper housing (110) may have an inlet (111) positioned at the center and an outlet (112) positioned at the edge. Since the inlet (111) is positioned to penetrate the upper housing (110) vertically and the outlet (112) is formed tangentially around the upper housing (110), the motor pump (100) may be in a shape suitable for applying a centrifugal impeller (120; see FIG. 3) inside. The lower housing (140) may be relatively thin compared to the vertical width of the upper housing (110) to accommodat