DE594810C - Device for regulating compression refrigeration machines - Google Patents
Device for regulating compression refrigeration machinesInfo
- Publication number
- DE594810C DE594810C DEN33822D DEN0033822D DE594810C DE 594810 C DE594810 C DE 594810C DE N33822 D DEN33822 D DE N33822D DE N0033822 D DEN0033822 D DE N0033822D DE 594810 C DE594810 C DE 594810C
- Authority
- DE
- Germany
- Prior art keywords
- compressed air
- air line
- line
- compression refrigeration
- refrigeration machines
- 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
Links
Classifications
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Description
Die Erfindung betrifft das bekannte Verfahren zur Regelung von Kompressionskältemaschinen, bei dem die Saugventile der Kältemaschine offen gehalten werden, wenn die Kühlsole eine gewisse Temperatur unterschreitet. The invention relates to the known method for controlling compression refrigeration machines, in which the suction valves of the refrigeration machine are kept open when the Cooling brine falls below a certain temperature.
Das Neue besteht darin, daß ein unter demThe novelty is that one under the
Einfluß der Kühlsole stehender Wärmeregler,Influence of the cooling brine of standing heat regulators,
z. B. Dehnungsmesser, eine das Offenhalten der Saugventile bewirkende Druckluftleitung steuert.z. B. strain gauge, a compressed air line that keeps the suction valves open controls.
Die Druckluft wirkt beispielsweise auf einen oberhalb des Saugventils angeordneten Kolben, dessen Kolbenstange auf der Spindel des Saugventils aufsitzt. Bei sinkender Soletemperatur öffnet der Wärmeregler die Druckluftleitung, wodurch der auf die Spindel des Saugventils wirkende Kolben das Saugventil von seinem Sitz abhebt und so lange offen hält, bis die Temperatur der Kühlsole wieder um einen entsprechenden Betrag gestiegen ist. Diese Regelung läßt sich so genau einstellen, daß die Temperatur der Kühlsole nur noch um 2 bis 30C schwankt, während bei der Handregelung weit größere Schwankungen unvermeidlich sind.The compressed air acts, for example, on a piston arranged above the suction valve, the piston rod of which is seated on the spindle of the suction valve. When the brine temperature drops, the heat regulator opens the compressed air line, whereby the piston acting on the spindle of the suction valve lifts the suction valve from its seat and keeps it open until the temperature of the cooling brine has risen again by a corresponding amount. This control can be set so precisely that the temperature of the cooling brine only fluctuates by 2 to 3 ° C., while much larger fluctuations are inevitable with manual control.
In den beiliegenden Zeichnungen ist eine beispielsweise Ausführung derErfindung dargestellt. An exemplary embodiment of the invention is shown in the accompanying drawings.
Abb. ι zeigt die ganze Anlage in schernatischer Darstellung.Fig. Ι shows the whole system in a Schernatic representation.
Abb. 2 zeigt das Saugventil mit dem darüber angeordneten Druckkolben.Fig. 2 shows the suction valve with the pressure piston arranged above it.
Ein von der Kühlsole 1 beeinflußter Wärmeregler 2 steuert vermittels eines Ventils 3 eine Druckluftleitung 4", die von der Hauptleitung 4 abgezweigt ist. Ist Druckluftleituhg 4" geöffnet, so hebt die Druckluft einen in einem Zylinder 5 befindlichen Doppelkolben 6, bis dieser seine höchste Stellung erreicht hat.A heat regulator 2 influenced by the cooling brine 1 controls by means of a valve 3 a Compressed air line 4 ", which is branched off from the main line 4. Is compressed air line 4" open, the compressed air lifts a double piston 6 located in a cylinder 5 to this has reached its highest position.
In dieser Stellung gibt der obere Kolben des Doppelkolbens 6 eine Druckluftleitung 46 frei, so daß die in der Leitung 4 befindliehe Druckluft durch Leitung 4* hindurch in die auf den Saugventilen 7 sitzenden Steuerzylinder 8 strömen kann.In this position, the upper piston of the double piston 6 releases a compressed air line 4 6 so that the compressed air located in the line 4 can flow through the line 4 * into the control cylinders 8 seated on the suction valves 7.
Infolgedessen werden die Steuerkolben 9 abwärts gedrückt. Da nun Kolbenstange 10 des Steuerkolbens 9 auf der Spindel 11 des Saugventils 12 aufsitzt, wird Saugventil 12 geöffnet und so lange offen gehalten, bis die Temperatur der Kühlsole wieder ansteigt. Wärmeregler 2 bringt dann Ventil 3 wieder in die ursprüngliche Stellung zurück, in welcher es Druckluftleitung 4a von der Leitung 4 wieder absperrt und die Druckluft aus der Leitung 4a ausströmen läßt.As a result, the control pistons 9 are pressed downwards. Since the piston rod 10 of the control piston 9 is now seated on the spindle 11 of the suction valve 12, the suction valve 12 is opened and kept open until the temperature of the cooling brine rises again. Heat regulator 2 then brings valve 3 back to its original position, in which it again blocks compressed air line 4 a from line 4 and lets the compressed air flow out of line 4 a.
Infolgedessen bewegt sich Doppelkolben 6 im Zylinder 5 wieder abwärts (was durch ein Gewicht 13 unterstützt werden kann), bis der obere Kolben die Druckluftleitung 4 abschließt, während die Luft aus der Leitung 4* durch den oberen Teil des Zylinders 5 ins Freie strömt.As a result, the double piston 6 moves downwards again in the cylinder 5 (which is caused by a weight 13 can be supported) until the upper piston closes the compressed air line 4, while the air from the line 4 * through the upper part of the cylinder 5 into the Free flows.
Zur Rückführung von indirekt wirkenden 6g Geschwindigkeitsreglern bei Kraftmaschinen hat man schon die Verwendung eines Servomotors mit HilfsSteuerung vorgeschlagen, die ihren Impuls von einem Geschwindigkeitsregler erhält.For the return of indirectly acting 6g Speed controllers in prime movers have already used a servo motor with auxiliary control proposed that its impulse from a speed controller receives.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEN33822D DE594810C (en) | Device for regulating compression refrigeration machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEN33822D DE594810C (en) | Device for regulating compression refrigeration machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE594810C true DE594810C (en) | 1934-03-22 |
Family
ID=7346620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEN33822D Expired DE594810C (en) | Device for regulating compression refrigeration machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE594810C (en) |
-
0
- DE DEN33822D patent/DE594810C/en not_active Expired
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