JPH0457695U

JPH0457695U -

Info

Publication number: JPH0457695U
Application number: JP9855090U
Authority: JP
Priority date: 1990-09-21
Filing date: 1990-09-21
Publication date: 1992-05-18

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例の主要部縦断面図
、第２図は本考案の第２実施例の主要部縦断面図
、第３図は従来の通風フアン付冷媒循環ポンプの
縦断面図、第４図は第３図の−矢視図である
。２……インペラ、２ａ……インペラボス部、３
……固定軸、２０……マグネツトカツプリング、
２１……インナーマグネツト、２２……アウター
マグネツト、３０，４０……ポンプケーシング、
３３，４３……通風フアン、３４，４４……ロー
タ、３６，４６……ステータコイル、３７，４７
……ロータマグネツト、４８……もう一つのロー
タマグネツト。 Fig. 1 is a vertical sectional view of the main part of the first embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the main part of the second embodiment of the invention, and Fig. 3 is a longitudinal sectional view of a conventional refrigerant circulation pump with ventilation fan. The top view, FIG. 4 is a view taken along the - arrow in FIG. 2... Impeller, 2a... Impeller boss section, 3
... Fixed shaft, 20 ... Magnetic coupling spring,
21... Inner magnet, 22... Outer magnet, 30, 40... Pump casing,
33, 43... Ventilation fan, 34, 44... Rotor, 36, 46... Stator coil, 37, 47
...Rotor magnet, 48...Another rotor magnet.

Claims

[Scope of Claim for Utility Model Registration] (1) An impeller for circulating a refrigerant is housed in a pump casing, a ventilation fan for cooling the pump casing is provided outside the pump casing, and the impeller and ventilation fan are connected together. These impellers and ventilation fans are arranged on the same axis, and the inner magnet and outer magnet of a magnetic coupling that transmits rotational force without contact across the wall of the pump casing are attached to the impeller and the ventilation fan, respectively. In a refrigerant circulation pump with a ventilation fan, in which the fan is rotated by a motor, the impeller is rotated by the action of a magnetic coupling. The ventilation fan is fixed to the outer periphery of the rotor magnet, the rotor magnet is extended toward the impeller, and the extended portion of the rotor magnet is used as the outer magnet, A refrigerant circulation pump with a ventilation fan, characterized in that an inner magnet provided on the impeller side is located on the inner peripheral side of the extending portion of the rotor magnet. (2) An impeller for circulating a refrigerant is housed in the pump casing, a ventilation fan for cooling the pump casing is provided outside the pump casing, the impeller and the ventilation fan are arranged on the same axis, and By rotating the ventilation fan with a motor, the rotational force is transmitted to the impeller across the pump casing without contact, and the impeller is thereby rotated.In a refrigerant circulation pump with a ventilation fan, the motor generates a rotating magnetic field. It is composed of a stator coil and a rotor magnet arranged around the outer periphery of the stator coil, the ventilation fan is fixed to the outer periphery of the rotor magnet, and the boss part of the impeller is inserted into the inner periphery of the stator coil. , a refrigerant circulation pump with a ventilation fan, characterized in that another rotor magnet is attached to this boss part.