DE2317621A1 - Compressed air drying by refrigeration - having means of switching between normal and standby operation - Google Patents

Compressed air drying by refrigeration - having means of switching between normal and standby operation

Info

Publication number
DE2317621A1
DE2317621A1 DE19732317621 DE2317621A DE2317621A1 DE 2317621 A1 DE2317621 A1 DE 2317621A1 DE 19732317621 DE19732317621 DE 19732317621 DE 2317621 A DE2317621 A DE 2317621A DE 2317621 A1 DE2317621 A1 DE 2317621A1
Authority
DE
Germany
Prior art keywords
compressed air
normal
refrigeration
switching
air
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.)
Pending
Application number
DE19732317621
Other languages
German (de)
Inventor
Horst Gluschke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DRUCKLUFT CENTER STUTTGART GMB
Original Assignee
DRUCKLUFT CENTER STUTTGART GMB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DRUCKLUFT CENTER STUTTGART GMB filed Critical DRUCKLUFT CENTER STUTTGART GMB
Priority to DE19732317621 priority Critical patent/DE2317621A1/en
Publication of DE2317621A1 publication Critical patent/DE2317621A1/en
Pending legal-status Critical Current

Links

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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/16—Filtration; Moisture separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • 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
    • F04B49/10—Other safety measures
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/11—Outlet temperature

Abstract

Power consumption is reduced by being able to switch between normal and standby. In normal operation, the refrigerator operates continuously, controlling to a constant dew-point of +2 degrees C. In the standby position at low loads, the dew point is controlled in a band by a thermostat, and the compressor is brought in when the dew point rises to the max agreed value, being switched out when it reaches the lower value again. Switching between the two modes can be manual or by a timer.

Description

Druckluft-Kältetrockner mit Umschaltmöglichkeit von Durchlaufbetrieb auf Aussetzbetrieb.Compressed air refrigeration dryer with switchover from continuous operation on intermittent operation.

Die Erfindung betrifft einen Druckluft-Kaltetrockner in dem die Druckluft durch einen Luft-Luft-Wärmetauscher und einen Luft-Kältemittel-Wärmetauscher auf ca. + 20r abgekühlt wird, dadurch gekennzeichnet, daß die Steuerung der Kältemaschine so ausgeführt ist, dass sie entweder von Hand oder automatisch durch eine Zeitschaltuhr an veränderte Betriebsbedingungen angepasst werden kann.The invention relates to a compressed air cold dryer in which the compressed air by an air-to-air heat exchanger and an air-to-refrigerant heat exchanger is cooled approx. + 20r, characterized in that the control of the refrigeration machine is designed so that it can be done either manually or automatically by a timer can be adapted to changed operating conditions.

Durch ein By-Pass-Regelventil im Kältekreislauf wird dafür gesorgt, dass über dem gesamten Leistungsbereich der Anlage (0-100% Luftdurchsatz) eine konstante Lufttemperatur von ca. + 200 gehalten wird. (Zeitschrift Druckluftpraxis, Krausskopf-Verlag Mainz 3. Jahrgang Nr. 3 März 1971) Das hat den Nachteiltdass die Kältemaschine auch in der Nacht, wenn gar keine Druckluft verbraucht wird, immer unter Vollast läuft.A by-pass control valve in the refrigeration circuit ensures that that over the entire performance range of the system (0-100% air throughput) a constant Air temperature of approx. + 200 is maintained. (Magazine compressed air practice, Krausskopf-Verlag Mainz 3rd year No. 3 March 1971) This has the disadvantage that the refrigeration machine too at night, when no compressed air is consumed, always runs under full load.

Der Erfindung liegt die Aufgabe tugrunde 1. zu gewährleisten, dass bei Verbrauch von Druckluft die Kältemaschine sofort arbeitet und 2. eine Möglichkeit zu schaffenrdie Kältemaschine in Zeiten geringen Bedarfs an Druckluft abzuschalten, gleichzeitig aber dafür zu sorgen, dass bei einsetzendem Verbrauch auch in dieser Zeit eine Kühlung der Druckluft und damit eine Trocknung sichergestellt ist.The invention is based on the task of 1. to ensure that when compressed air is consumed, the refrigeration machine works immediately and 2. one possibility to switch off the refrigeration machine in times of low compressed air demand, at the same time, however, to ensure that when consumption begins, also in this Time a cooling of the compressed air and thus a drying is ensured.

Diese Aufgabe wird wie folgt gelöst: Die Steuerung erfolgt im Durchlaufbetrieb (Tagbetrieb) durch ein By-Pass-Ventil, das heißt die Kältemaschine arbeitet ununterbrochen. Erfolgt jetzt entweder von Hand oder automatisch durch eine Zeitschaltuhr die Umschaltung auf Aussetzbetrieb (Nachtbetrieb), so wird die Steuerung nicht mehr durch das By-Pass-Ventil durchgeführt, sondern erfolgt durch einen Thermostat innerhalb bestimmter Temperaturgrenzen. Die Kältemaschine wird also, wenn die am Thermostat eingestellte niederste Temperatur erreicht ist abgeschaltet und erst bei Erreichen der eingestellten obersten Temperatur wieder eingeschaltet. Schaltet der Thermostat durch eine Störung nicht mehr aus, so wird die Steuerung automatisch vom By-Pass-Ventil übernommen.This task is solved as follows: The control takes place in continuous operation (Daytime operation) through a by-pass valve, i.e. the refrigeration machine works continuously. The changeover is now carried out either manually or automatically by means of a timer to intermittent operation (night operation), the control is no longer through the by-pass valve carried out, but is carried out by a thermostat within certain temperature limits. The refrigeration machine is activated when the lowest temperature set on the thermostat reached is switched off and only when the set uppermost temperature is reached switched on again. If the thermostat no longer switches off due to a fault, control is automatically taken over by the by-pass valve.

Durch diese Lösung ergeben sich folgende Vorteile: 1. Energieersparniss bei einschichtigem Betrieb von ca. 2/3 des bisherigen Verbrauchs. 2. Erhöhung der Lebensdauer der Kältemaschine um etwa 2/3 der bisherigen Lebensdauer.This solution has the following advantages: 1. Energy savings in single-shift operation of approx. 2/3 of the previous consumption. 2. Increase in Service life of the refrigeration machine by around 2/3 of the previous service life.

Claims (1)

Patentanspruch: Druckluft-Kältetrockner in dem die Druckluft durchClaim: Compressed air refrigeration dryer in which the compressed air passes through einen Luft-Luft-Wärmetauscher und einen Luft-Kältemittel-Wärmetauscher auf ca. + 20C abgekühlt wird, dadurch gekennzeichnet, dass verschiedene Regelungsarten (Durchlaufbetrieb) d. h. konstanter Taupunkt und (Aussetzbetrieb) d. h. einstellbare Taupunkte durch Thermostat gesteuert entweder von Hand oder automatisch miteinander kombiniert werden.an air-to-air heat exchanger and an air-to-refrigerant heat exchanger is cooled to approx. + 20C, characterized in that different types of regulation (Continuous operation) d. H. constant dew point and (intermittent operation) d. H. adjustable Dew points controlled by thermostat either manually or automatically with each other be combined. LeerseiteBlank page
DE19732317621 1973-04-07 1973-04-07 Compressed air drying by refrigeration - having means of switching between normal and standby operation Pending DE2317621A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19732317621 DE2317621A1 (en) 1973-04-07 1973-04-07 Compressed air drying by refrigeration - having means of switching between normal and standby operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732317621 DE2317621A1 (en) 1973-04-07 1973-04-07 Compressed air drying by refrigeration - having means of switching between normal and standby operation

Publications (1)

Publication Number Publication Date
DE2317621A1 true DE2317621A1 (en) 1974-10-24

Family

ID=5877387

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732317621 Pending DE2317621A1 (en) 1973-04-07 1973-04-07 Compressed air drying by refrigeration - having means of switching between normal and standby operation

Country Status (1)

Country Link
DE (1) DE2317621A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368986A1 (en) * 1976-10-28 1978-05-26 Bbc Brown Boveri & Cie Cooling gas for electrical generators cooled and dried - to separate oil and water in process controlled from dew point measurements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368986A1 (en) * 1976-10-28 1978-05-26 Bbc Brown Boveri & Cie Cooling gas for electrical generators cooled and dried - to separate oil and water in process controlled from dew point measurements

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