PUMP

• Main Authors: TAM NGUYEN THI THANH, LETHITHANH THAO, KATAOKA YOSHIHIRO, SHIZUKU OSAMICHI, YAHATA TAKANOBU
• Format: Patent
• Language: English; Japanese
• Published: 24.01.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

To provide a pump which can cool a circuit board efficiently while inhibiting increase in the size of the pump.SOLUTION: One embodiment of a pump of the invention includes: a rotor which may rotate around a center axis; a stator which is positioned at the radial outer side of the rotor and encloses the rotor; a pump part connected to one axial side of the rotor; a circuit board disposed at the other axial side of the stator; a support member positioned at the radial inner side of the stator and having a rotor housing part which houses the rotor therein; and a fixed shaft which rotatably supports the rotor. The rotor housing part has: a lid part which covers the rotor from the other axial side; and a cylindrical part which is positioned between the rotor and the stator in a radial direction and open to one axial side. The fixed shaft is held by the lid part and has an exposed part which is exposed to the other axial side relative to the lid part and faces the circuit board. A heat conductive material is sandwiched between the exposed part and the circuit board.SELECTED DRAWING: Figure 2 【課題】ポンプの大型化を抑制しつつ回路基板を効率的に冷却できるポンプを提供する。【解決手段】本発明のポンプの一つの態様は、中心軸線を中心として回転可能なロータと、ロータの径方向外側に位置しロータを囲むステータと、ロータの軸方向一方側に繋がるポンプ部と、ステータの軸方向他方側に配置される回路基板と、ステータの径方向内側に位置しロータを内部に収容するロータ収容部を有する支持部材と、ロータを回転可能に支持する固定シャフトと、を備える。ロータ収容部は、ロータを軸方向他方側から覆う蓋部と、径方向においてロータとステータとの間に位置し、軸方向一方側に開口する筒状部と、を有する。固定シャフトは、蓋部に保持され、蓋部に対して軸方向他方側に露出し回路基板と対向する露出部を有する。露出部と回路基板との間には、熱伝導材が挟まれる。【選択図】図２