JPH0397367U

JPH0397367U -

Info

Publication number: JPH0397367U
Application number: JP1990003425U
Authority: JP
Priority date: 1990-01-18
Filing date: 1990-01-18
Publication date: 1991-10-07
Anticipated expiration: 2005-01-18
Also published as: JPH0739331Y2

Description

[Brief explanation of the drawing]

第１図は本考案の制御方式を用いる圧縮機の断
面図、第２図は第１図に示した圧縮機の−断
面図、第３図は実際の圧縮機に位置検出器を付け
た状態を示す要部断面図、第４図は第３図に示し
た圧縮機の上面図、第５図は第３図に示したデイ
スクの上面図、第６図は第５図に示したデイスク
の−断面図、第７図は第６図に示したデイス
クの組み立て図、第８図は第７図に示したホルダ
の展開図、第９図は他の実施例によるホルダを用
いたデイスクの断面図、第１０図は第１図〜第３
図に示した圧縮機に用いる制御回路図、第１１図
は第１０図に示すスイツチング素子のＯＮ／ＯＦ
Ｆの変化を示す説明図、第１２図は第１０図に示
した制御部の動作を示すフローチヤート、第１３
図は第１２図に示すフローチヤートを実行した際
に得られる交流電力の電圧波形図、第１４図は圧
縮機を駆動しているときの圧縮機の振動状態を示
した振動特性図、第１５図は圧縮機を３０Ｈｚで
駆動したときの振動波形図、第１６図はホール素
子の取付状態を示す他の実施例の圧縮機の要部断
面図、第１７図は第１６図に示した圧縮機の上面
図である。１……圧縮機、４……圧縮要素、５……誘導電
動機、６……回転子、２２……デイスク、２３…
…マグネツト、２４……ホール素子、２７〜２９
……固定子巻線、３０……位置検出回路、３１…
…制御部、３２〜３７……スイツチング素子、４
０……速度指令回路、５３……ホルダ、５９……
透口。 Figure 1 is a sectional view of a compressor using the control method of the present invention, Figure 2 is a sectional view of the compressor shown in Figure 1, and Figure 3 is an actual compressor with a position detector attached. Fig. 4 is a top view of the compressor shown in Fig. 3, Fig. 5 is a top view of the disk shown in Fig. 3, and Fig. 6 is a top view of the disk shown in Fig. 5. - sectional view, FIG. 7 is an assembled view of the disk shown in FIG. 6, FIG. 8 is a developed view of the holder shown in FIG. 7, and FIG. 9 is a cross-sectional view of a disk using a holder according to another embodiment. Figures and Figure 10 are Figures 1 to 3.
The control circuit diagram used in the compressor shown in the figure, Figure 11 shows the ON/OF of the switching element shown in Figure 10.
FIG. 12 is a flowchart showing the operation of the control section shown in FIG. 10;
The figure is a voltage waveform diagram of AC power obtained when the flowchart shown in Figure 12 is executed, Figure 14 is a vibration characteristic diagram showing the vibration state of the compressor when the compressor is being driven, and Figure 15 is a diagram of the vibration characteristics of the compressor. The figure is a vibration waveform diagram when the compressor is driven at 30Hz, Figure 16 is a sectional view of the main parts of a compressor of another embodiment showing the installation state of the Hall element, and Figure 17 is the compression diagram shown in Figure 16. FIG. DESCRIPTION OF SYMBOLS 1... Compressor, 4... Compression element, 5... Induction motor, 6... Rotor, 22... Disk, 23...
...Magnet, 24...Hall element, 27-29
...Stator winding, 30...Position detection circuit, 31...
...Control unit, 32-37...Switching element, 4
0...Speed command circuit, 53...Holder, 59...
Through mouth.

Claims

[Claims for Utility Model Registration] (1) A compressor comprising an electric motor and a compression element connected to the electric motor via a rotating shaft and driven by the electric motor, housed in a single closed container,
A cylinder with a bottom is inserted from the outside of the sealed container while keeping the sealed container airtight toward a permanent magnet that rotates with the rotating shaft, a magnetic detector provided at the bottom of this cylinder, and a magnet that rotates with the rotating shaft. Moreover, it is equipped with a disk whose center of rotation coincides with this rotation axis, and a non-magnetic member that covers the magnetic detector and is fixed on the disk, so that the output of the magnetic detector changes with the rotation of the rotor. A rotational position detection device for a compressor motor, characterized in that: (2) The rotational position detection device for a compressor motor according to claim 1, wherein the member is provided with a through hole through which a permanent magnet can be seen.