JPS6398496U

JPS6398496U -

Info

Publication number: JPS6398496U
Application number: JP19305086U
Authority: JP
Priority date: 1986-12-17
Filing date: 1986-12-17
Publication date: 1988-06-25

Description

[Brief explanation of the drawing]

第１図は本考案に係る直流キヤンドモータポン
プの一実施例を示す要部断面図、第２図は第１図
に示す直流ブラシレスモータの制御系の系統図、
第３図は本考案に係る直流キヤンドモータポンプ
の別の実施例を示す要部断面図である。１０……キヤンドモータ部、１２……ポンプ、
１４……モータケーシング、１６……ステータ、
１８……ステータライナ、２０……ロータ、２２
……永久磁石、２４……ロータスリーブ、２６…
…ロータ軸、２８……シヤフトスリーブ、３０…
…前部ベアリング、３２……後部ベアリング、３
４……前部ベアリングハウジング、３６……後部
ベアリングハウジング、３８……端子箱、４０…
…ステータ室、４２……磁気センサ、４４……サ
イリスタインバータ回路、４６……ゲート制御回
路、４８……ポンプケーシング、５０……ポンプ
室、５２……インペラ、５４……吐出液通路、５
６……通液孔、５８……ロータ室、６０……後部
液室、６２……通液孔、６４……中心孔、６６…
…バランスホール、６８……吸込管、７０……吐
出管、７２……開口。 FIG. 1 is a sectional view of essential parts showing an embodiment of the DC canned motor pump according to the present invention, FIG. 2 is a system diagram of the control system of the DC brushless motor shown in FIG. 1,
FIG. 3 is a sectional view of main parts showing another embodiment of the DC canned motor pump according to the present invention. 10... Canned motor section, 12... Pump,
14...Motor casing, 16...Stator,
18...Stator liner, 20...Rotor, 22
...Permanent magnet, 24...Rotor sleeve, 26...
...Rotor shaft, 28...Shaft sleeve, 30...
...Front bearing, 32...Rear bearing, 3
4...Front bearing housing, 36...Rear bearing housing, 38...Terminal box, 40...
... Stator chamber, 42 ... Magnetic sensor, 44 ... Thyristor inverter circuit, 46 ... Gate control circuit, 48 ... Pump casing, 50 ... Pump chamber, 52 ... Impeller, 54 ... Discharge liquid passage, 5
6...Liquid hole, 58...Rotor chamber, 60...Rear liquid chamber, 62...Liquid hole, 64...Center hole, 66...
... Balance hole, 68 ... Suction pipe, 70 ... Discharge pipe, 72 ... Opening.

Claims

[Scope of Claim for Utility Model Registration] (1) Consisting of a canned motor section consisting of a DC brushless motor and a pump section, configured to circulate and supply part of the liquid handled by the pump to the lubricated surface of a bearing that supports the rotor shaft of the canned motor section. A DC canned motor pump characterized by: (2) Scope of Utility Model Registration In the DC canned motor pump described in claim 1, the canned motor section has a stator hermetically arranged on the inner circumference of the motor casing, and a rotor using a permanent magnet inside the stator. A rotor is rotatably supported and the outer periphery of the rotor is hermetically sealed with a rotor can, and a magnetic sensor is provided adjacent to the hermetically arranged core of the stator to detect magnetic changes in the permanent magnets of the rotor, and this magnetic sensor is attached to the stator. A DC canned motor pump configured as a rotational displacement detection element that generates a signal to be input to a control circuit that performs power control. (3) In the DC canned motor pump described in claim 1 of the utility model registration claim, the pump section has a pump chamber formed on the side surface of a bearing housing for holding a bearing that supports one end of the rotor shaft. A DC canned motor pump configured to guide the discharged liquid obtained in the chamber to the outer periphery of the motor casing and to circulate a part of this discharged liquid into the rotor chamber.