Abstract:
본원발명의 기술적 과제는 위와 같은 종래 압축기의 문제점을 해결하는 것으로서, 사이클 매칭 능력이 없는 냉장고 또는 제어부를 포함하지 않는 냉장고에 적용되어, 압축기 자체적으로 리니어 모터의 구동을 제어할 수 있는 압축기 및 그의 제어방법을 제공하는 것으로서, 상술한 바와 같은 과제를 해결하기 위한 본 명세서에 개시된 냉매 싸이클을 포함하는 기기에 설치된 압축기에 있어서, 실린더의 내부에서 왕복 운동하는 피스톤, 상기 피스톤의 운동을 위하여, 구동력을 제공하는 리니어 모터, 상기 리니어 모터의 모터전류를 감지하는 감지부 및 기기의 본체를 제어하는 제어부와 별도로, 상기 기기의 부하와 관련된 정보를 검출하는 압축기 제어부를 포함하고, 압축기 제어부는, 피스톤의 스트로크와, 상기 감지된 모터전류의 위상차이를 산출하고, 상기 산출된 위상차이와 기준 위상차이 값을 비교하여, 비교결과에 따라 상기 검출된 부하에 대응하여 상기 리니어 모터의 구동을 제어하는 것을 특징으로 한다.
Abstract:
A linear compressor (100) is provided. The linear compressor (100) includes an electro-magnetic spring (150) and a casing (110) that defines a chamber (112). A piston (120) is received within the chamber (1 12) of the casing (110). The electro-magnetic spring (150) can apply a non-linear force to the piston (120) such that a total spring force applied to the piston (120) during a compression stroke is substantially linear.
Abstract:
The present invention relates to a system and method for controlling the piston of a resonant linear compressor (100) especially designed to operate with maximum efficiency, wherein the system can actuate the compressor without using sensors for measuring mechanical values or variables. The present invention further relates to a method for controlling a resonant linear compressor piston, the method comprising steps that make it possible to evaluate piston speed and displacement in order to control the compressor motor in an efficient manner. In addition, the present invention relates to a resonant linear compressor (100) provided with the claimed control system.
Abstract:
The present invention relates to a system and method of controlling a linear compressor (10), which is capable of fine-tuning the compressor when necessary, throughout the operating period of the compressor, so that said compressor operates at maximum capacity, wherein the piston (1) achieves a maximum displacement amplitude, closely approaching the cylinder head (2) without colliding with it. The system and the method according to the invention are also intended to control the operation of the linear compressor throughout its operating period, also seeking to maximize its performance and to reduce or optimize its power consumption. According to the present invention, the fine-tuning and control of the operation of the linear compressor are carried out by means of the combination of a technique for controlling a compressor without a sensor, and a technique for controlling the compressor with the aid of a sensor.
Abstract:
Rotational force from a driving device 11 is transmitted to an eccentric cam 32 through a rotating rod 31, and the eccentric cam 32 causes a piston 22 and a piston rod 25 to move up and down in a reciprocating manner by its rotation. Atmospheric air is inspired into a first chamber R1 in a cylinder 21 upon the descent of the piston 22. Upon the rise of the piston 22, the air in the first chamber R1 is compressed, and the compressed high-pressure air is discharged to an accumulator 12 through a discharge valve 25. The accumulator communicates with a second chamber R2 in the cylinder 21. When the air pressure in the accumulator 12 increases, this high-pressure air pushes the piston 22 to cancel the contact between the piston rod 26 and the eccentric cam 32, whereby the power transmission from a power transmission device 30 to a pressure conversion mechanism 20 is cut off.
Abstract:
A stroke adjustment mechanism having fewer parts that are easier to manufacture. In order to translate stroke adjustment into an eccentric offset of a rotating shaft to act as a rotating cam surface, the present invention utilizes two separate and identical plungers. The plungers are easier to manufacture as they do not require complex machining in mating parts. The present invention is also easier to assemble than prior designs. The present invention allows the drive gear to be produced with a simple round ID bore and also uses a one-piece, easy to machine round shaft. This provides for a simple and strong design.
Abstract:
Eine elektrohydraulische Steueranordnung ist mit einer verstellbaren Fluidpumpe und mit einem drehzahlvariablen elektrischen Antrieb ausgestattet. Eine Druckerfassungseinrichtung erlaubt die Erfassung des Fluiddrucks. Der Hauptregelkreis dieser elektrohydraulischen Steueranordnung besitzt ein Drehzahlstellglied des elektrischen Antriebs als Stellglied. Mittels des Hauptregelkreises lässt sich der Fluiddruck und damit z.B. eine durch eine Zylinder ausgeübte Kraft oder eine nachgeordnete Stellgröße wie z.B. eine Position oder eine Geschwindigkeit regeln. Ein Verdrängungsvolumenstellglied der Fluidpumpe wird mittels einer Nebenstellkette in Abhängigkeit von dem erfassten Fluiddruck angesteuert.
Abstract:
Die Erfindung betrifft eine Vorrichtung (1) mit einem Linearantrieb (2), der einen Stator (4) und einen darin entlang einer Antriebsachse (9) zwischen einem ersten (11) und einem zweiten (12) Läuferumkehrpunkt um eine Läufernulllage (13) hin und her beweglichen Läufer (5) aufweist, und/oder mit einem Linearverdichter (3), der ein Kolbengehäuse (7) und einen darin entlang einer Kolbenachse (8) und einem ersten (21) und einem zweiten (22) Kolbenumkehrpunkt um eine Kolbennulllage (23) hin und her beweglichen, von dem Linearantrieb (2) antreibbaren Verdichterkolben (6) aufweist, wobei entweder die Läufernulllage (13) bzw. die Kolbennulllage (23) verstellbar ist und/oder mindestens ein Federelement (14, 15) an dem Läufer (5) bzw. an dem Verdichterkolben (6) wirkt, dessen Länge verändert, insbesondere verkürzt werden kann, und/oder dessen Federkonstante geändert, insbesondere erhöht werden kann; und ein Verfahren zum Kühlen von Waren (27) bzw. zum Verdichten eines Fluids (18). Die Erfindung zeichnet sich dadurch aus, dass eine Anpassung der von der Vorrichtung abgegebenen Leistung keinen wesentlichen Einfluss auf den elektromechanischen Wirkungsgrad der Vorrichtung aufweist, wodurch ein Linearantrieb (2) und ein Linearverdichter (3) besonders kostengünstig gebaut werden können, da die Vielfalt der Produkte erheblich reduziert werden kann.
Abstract:
An operation controlling apparatus for a reciprocating compressor, and a method thereof, which are capable of accurately controlling the reciprocating compressor by sensing a size of a load applied to the reciprocating compressor and a stroke estimation value of the reciprocating compressor and then compensating a parameter of a motor in the reciprocating compressor based upon the sensing, the operation controlling apparatus comprising a controlling unit a controlling unit for comparing a phase difference between a detected current and a stroke with a reference phase difference to determine a size of a load, and outputting, according to the determined size of the load, a compensation control signal to compensate a parameter of a motor and a stroke control signal to control the stroke.
Abstract:
A rodless pump is disclosed which is connected to a pressure source via a conduit. In a common oilfield application the pump would be connected to the bottom of a tubing string within the reservoir fluid to be produced. A pressure source such as a hydraulic pump would be connected at the surface to the tubing string so as to selectively apply pressure via fluid in the conduit to the pump, raising the plunger assembly in the pump drawing reservoir fluid into the pump. When pressure via the surface pressure source is released, a gas source in the pump urges the plunger assembly downward in the pump urging the reservoir fluid in the pump into the tubing and to the surface. Preferably, the pump includes dampening mechanisms at both the top and bottom of the plungers stroke so as to reduce metal to metal impact within the pump. This dampening mechanism may include but is not limited to elastomer barriers, springs, and other dampening mechanisms such as discussed further below.