JPH01136860U

JPH01136860U -

Info

Publication number: JPH01136860U
Application number: JP3223188U
Authority: JP
Priority date: 1988-03-11
Filing date: 1988-03-11
Publication date: 1989-09-19

Description

[Brief explanation of the drawing]

第１図はこの考案による冷凍装置の全体構成図
、第２図はその冷凍装置の構成図、第３図は制御
部の構成図、第４図はその動作を示すフローチヤ
ート、第５図、第６図、第７図はその動作説明用
線図、第８図は従来の冷凍装置を示す構成図、第
９図はその制御部の構成図である。図において１はコンプレツサ、２はデイスプレ
ーサ、３は制御部、４はコンプレツサピストン、
５はデイスプレーサピストン、６は熱交換器、８
はコールドフインガ、９，１０は位置検出器、１
１，１２はリニアモータ、２４はピストン位置検
出手段、２５は位置信号比較手段、２６は駆動波
形記憶手段、２７は位置補正信号作成手段、３６
はモータ制御部である。なお、各図中同一符号は
同一または相当部分を示す。 Fig. 1 is an overall block diagram of the refrigeration system according to this invention, Fig. 2 is a block diagram of the refrigeration system, Fig. 3 is a block diagram of the control section, Fig. 4 is a flowchart showing its operation, and Fig. 5. 6 and 7 are diagrams for explaining its operation, FIG. 8 is a block diagram showing a conventional refrigeration system, and FIG. 9 is a block diagram of its control section. In the figure, 1 is a compressor, 2 is a displacer, 3 is a control unit, 4 is a compressor piston,
5 is a displacer piston, 6 is a heat exchanger, 8
is a cold finger, 9 and 10 are position detectors, 1
1 and 12 are linear motors, 24 is a piston position detection means, 25 is a position signal comparison means, 26 is a drive waveform storage means, 27 is a position correction signal creation means, 36
is the motor control section. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A compressor that has a piston inside that is connected to and driven by a linear motor, a displacer that consists of a variable space inside the compressor, a variable space connected by a connecting pipe, a piston, and a variable space on the other side. a heat exchanger connecting the two variable spaces of the displacementr; a linear motor connected to the displacementr; a position detector connected to the piston inside the compressor to detect the position of the piston; a position detector that is connected to the piston inside the spacer and detects the position of the piston; a cold finger that is integrated with the displacer and transmits cold heat to the outside; and a position sensor that is connected to the piston of the compressor. A detector, a piston position detection means that receives a detection signal from a position detector connected to the piston of the displacer and detects the position of each piston, and preset drive waveforms and operation of each of the compressor and displacer. drive waveform storage means for storing patterns; position signal comparison means for comparing the output of the piston position detection means with the output of the drive waveform storage means; and position correction for creating a position correction signal based on the output of the position signal comparison means. a signal generating means; a motor controlling means for controlling the linear motor connected to each of the compressor and the displacer based on the output of the position correction signal generating means; Comparing the output of the piston position detection means and the output of the drive waveform storage means at intervals, and from the outputs, the position correction signal creation means determines the ratio of the respective outputs,
A position correction signal is generated by multiplying the reciprocal of the signal stored in the drive waveform storage means corresponding to the position of the next sample, and the drive waveform storage means, the position signal comparison means, and the position correction signal A refrigeration device whose creation means is realized by a microcomputer.