ELECTRIC PUMP DEVICE

• Main Authors: SAKATA TOMOHIRO, SAKAMOTO HITOSHI, KANAMONO HIROTAKA, SEKIGUCHI CHISATO, KOBAYASHI YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 09.04.2020
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BLASTING; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

To provide an electric pump device capable of curbing deformation of an inverter substrate by reducing reaction force on a heat conduction sheet.SOLUTION: An inverter substrate 40 has a plurality of heater elements 46 which are mounted thereon and arranged at intervals. A housing 11 has an inverter housing section 13 which stores the inverter substrate. The inverter housing section has: a first member which is arranged opposite to one of a pair of substrate surfaces of the inverter substrate; a second member which is arranged opposite to the other of the pair of substrate surfaces; and a plurality of heat conduction sheets 13c which are arranged between either one of the first member or the second member and the inverter substrate and brought into contact with either one of the first member or the second member and the inverter substrate. The heat conduction sheets are thermally connected to the heater elements. The plurality of heat conduction sheets are individually arranged at positions overlapping with each of the plurality of heater elements in the planar view of the inverter substrate.SELECTED DRAWING: Figure 4 【課題】熱伝導シートの反力を低減して、インバータ基板の変形を抑制できる電動ポンプ装置を提供する。【解決手段】インバータ基板４０は、インバータ基板に実装され、互いに間隔をあけて配置される複数の発熱素子４６を有する。ハウジング１１は、インバータ基板を収容するインバータハウジング部１３を有する。インバータハウジング部は、インバータ基板の一対の板面のうち、一方の板面と対向する第１部材と、一対の板面のうち、他方の板面と対向する第２部材と、第１部材または第２部材と、インバータ基板との間に配置され、第１部材または第２部材と、インバータ基板とに接触する複数の熱伝導シート１３ｃと、を有する。熱伝導シートは、発熱素子と熱的に接続される。インバータ基板の平面視において、複数の熱伝導シートは、複数の発熱素子と重なる位置に、個別に配置される。【選択図】図４