DE70674C - Control of the inlet and outlet valves of the expansion cylinder of compression refrigeration machines by the compressor pressure - Google Patents
Control of the inlet and outlet valves of the expansion cylinder of compression refrigeration machines by the compressor pressureInfo
- Publication number
- DE70674C DE70674C DENDAT70674D DE70674DA DE70674C DE 70674 C DE70674 C DE 70674C DE NDAT70674 D DENDAT70674 D DE NDAT70674D DE 70674D A DE70674D A DE 70674DA DE 70674 C DE70674 C DE 70674C
- Authority
- DE
- Germany
- Prior art keywords
- expansion cylinder
- inlet
- control
- compression refrigeration
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007906 compression Methods 0.000 title claims description 12
- 238000005057 refrigeration Methods 0.000 title claims description 3
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000284 resting Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/14—Power generation using energy from the expansion of the refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMTPATENT OFFICE
Die nachfolgend beschriebene Steuerung des Expansionscylinders an Compressionskühlmaschinen beruht auf die Bethätigung der Ein- und Austrittsventile des Expansionscylinders durch den veränderlichen Druck im Compressionscylinder, wobei vorausgesetzt ist, dafs der ganze Procefs sich in einem Cylinder derart vollzieht, dafs die eine (vordere) Kolbenseite E als Expansionscylinder, die andere (hintere) C dagegen als Compressionscylinder dient (Fig. 3).The control of the expansion cylinder on compression refrigeration machines described below is based on the actuation of the inlet and outlet valves of the expansion cylinder by the variable pressure in the compression cylinder, whereby it is assumed that the entire process takes place in a cylinder in such a way that one (front) piston side E becomes Expansion cylinder, the other (rear) C, on the other hand, serves as a compression cylinder (Fig. 3).
Zu diesem Zweck ist das nach aufsen hin öffnende Einlafsventil F1, Fig. 1, mit einem in seiner Führung dicht beweglichen Kolben K1 versehen, auf dem vermittelst der Rohrleitung L der. Druck der Compression lastet, derart, dafs er den Kolben vorzuschieben und damit das Ventil zu schliefsen strebt. Während der Admissionsperiode des Expansionscylinders, welche bei der gedachten Anordnung (Fig. 3) mit der Verdichtungsperiode des Compressionscylinders zusammenfällt, bleibt das Ventil F1, dessen Gehäuse durch c mit dem Condensator in Verbindung steht, geöffnet, bis der Druck hinter K1 über den Condensatordruck steigt. Alsdann wird das Ventil V1 durch den Kolben -KT1 geschlossen und die Expansionsperiode beginnt, während im Compressor das verdichtete Medium (Gas oder Dampf) durch das Druckventil D hinausgeschoben wird. In dieser Periode ist der auf dem Ventil F1 ruhende Condensatordruck grofs genug, um dasselbe geschlossen zu halten. Dies gilt auch für die mit dem Rückgang (Linkshub) des Kolbens K0, Fig. 3, und der Saugperiode im Compressor verbundene Ausschubperiode des Expansionscylinders. Wird dann auf weiter unten zu beschreibende Art das während dieser Periode geöffnete Auslafsventil F2 geschlossen, so wird das Eintrittsventil entweder durch die rasch ansteigende Compression im Expansionscylinder oder auch durch einen Anschlag an dem zurückkehrenden Kolben K0 wieder gehoben, und das Spiel beginnt von neuem.For this purpose, the outwardly opening inlet valve F 1 , Fig. 1, is provided with a piston K 1 , which is tightly movable in its guide and on which, by means of the pipeline L, the. The pressure of the compression is such that it tends to advance the piston and thus to close the valve. During the admission period of the expansion cylinder, which in the imaginary arrangement (Fig. 3) coincides with the compression period of the compression cylinder, the valve F 1 , the housing of which is connected to the condenser by c , remains open until the pressure behind K 1 is above the Condenser pressure increases. Then the valve V 1 is closed by the piston -KT 1 and the expansion period begins while the compressed medium (gas or steam) is pushed out through the pressure valve D in the compressor. During this period the condenser pressure on valve F 1 is high enough to keep it closed. This also applies to the extension period of the expansion cylinder associated with the decrease (left stroke) of the piston K 0 , FIG. 3, and the suction period in the compressor. If the outlet valve F 2 , which is open during this period, is then closed in a manner to be described below, the inlet valve is lifted again either by the rapidly increasing compression in the expansion cylinder or by a stop on the returning piston K 0 , and the game starts again .
Das nach dem Cylinderinnern öffnende Auslafsventil F2, Fig. 2, besitzt ebenfalls einen Kolben K2, welcher durch L unter dem veränderlichen Compressordruck steht, so dafs dieser das Ventil auf seinem Sitz festzuhalten sucht. Auf diesem Ventil lastet von aufsen her durch R, ebenso auf der anderen Kolbenseite durch R1 der constante Refrigeratordruck. Während der Admissions - und Expansionsperiode ist nun der Druck im Innern des Expansionscylinders vereinigt, mit dem Compressordruck, ausreichend, das Ventil F2 gegen den auf diesem wie auf der anderen Seite des Kolbens K2 ruhenden Refrigeratordruck geschlossen zu halten. Beginnt jedoch mit dem Linkshub des Kolbens X0 die Saugperiode im Compressor durch Oeffnen von S, Fig. 3, so wird sich das Ventil F2 sofort mit der unter den Refrigeratordruck herabsinkenden Saugdepression im Compressor öffnen, und die Ausschubperiode beginnt. Am Ende derselben mufs das Ventil F0 entweder durch den Kolben K0 selbst oder einen an demselben angebrachten The outlet valve F 2 , Fig. 2, which opens towards the inside of the cylinder , also has a piston K 2 which, through L, is under the variable compressor pressure, so that it tries to hold the valve firmly in its seat. The constant refrigerator pressure acts on this valve from the outside through R, and likewise on the other side of the piston through R 1. During the admission and expansion period, the pressure inside the expansion cylinder is now combined with the compressor pressure, sufficient to keep the valve F 2 closed against the refrigerator pressure resting on this and on the other side of the piston K 2. If, however, the suction period in the compressor begins with the left stroke of the piston X 0 by opening S, Fig. 3, the valve F 2 will open immediately with the suction depression in the compressor falling below the refrigerator pressure, and the extension period begins. At the end of the same, the valve F 0 must either be attached to the piston K 0 itself or one to the same
elastischen Anschlag geschlossen werden, worauf die Compression im Expansionscylinder beginnt. elastic stop are closed, whereupon the compression begins in the expansion cylinder.
Die Uebertragung des Druckes vom Compressor auf die Ventilkolben K1 und K9 geschieht durch die mit einer geeigneten Flüssigkeit gefüllte Leitung L. The pressure is transmitted from the compressor to the valve pistons K 1 and K 9 through the line L filled with a suitable liquid.
Die hier beschriebene Steuerungsmethode ist auch anwendbar bei getrenntem bezw. doppelt wirkendem Compressions- und Expansionscylinder, wenn nur die beiden Arbeitskolben entweder vollständig oder doch nahezu gleichlaufend sind.The control method described here can also be used with separate bezw. double acting compression and expansion cylinder, if only the two working pistons are either completely or almost concurrently.
Eine derartige Anordnung stellt Fig. 4 dar, wobei der Expansionscylinder K0 sich hinter dem Compressionscylinder K0 1 befindet. Die Kolben beider Cylinder K0 und K0 : sind durch eine gemeinsame Stange verbunden, also gleichlaufend, während der Raum zwischen den beiden Kolben sowohl offen, wie geschlossen sein kann. Diese Anordnung hat vor der in Fig. 3 dargestellten den Vor.theil, dais das Austrittsventil F2 des Expansionscylinders in axialer Richtung vom Kolben, K0 getroffen und geschlossen wird. Endlich kann man noch das Eintrittsventil V1 in den Kolben K0 verlegen und den Raum zwischen den beiden Kolben K0 und K0 1 mit dem Condensator verbinden, ohne dafs an der Wirkungsweise der Ventile eine' Aenderung eintritt.Such an arrangement is shown in FIG. 4, the expansion cylinder K 0 being located behind the compression cylinder K 0 1 . The pistons of both cylinders K 0 and K 0 : are connected by a common rod, i.e. they run in the same direction, while the space between the two pistons can be both open and closed. This arrangement has the advantage over the one shown in FIG. 3 that the outlet valve F 2 of the expansion cylinder is hit and closed in the axial direction by the piston K 0. Finally, the inlet valve V 1 can be relocated into the piston K 0 and the space between the two pistons K 0 and K 0 1 can be connected to the condenser without any change in the way the valves work.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE70674C true DE70674C (en) |
Family
ID=344038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT70674D Expired - Lifetime DE70674C (en) | Control of the inlet and outlet valves of the expansion cylinder of compression refrigeration machines by the compressor pressure |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE70674C (en) |
-
0
- DE DENDAT70674D patent/DE70674C/en not_active Expired - Lifetime
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