US1875875A - Refrigerating method and apparatus - Google Patents

Refrigerating method and apparatus Download PDF

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Publication number
US1875875A
US1875875A US348743A US34874329A US1875875A US 1875875 A US1875875 A US 1875875A US 348743 A US348743 A US 348743A US 34874329 A US34874329 A US 34874329A US 1875875 A US1875875 A US 1875875A
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US
United States
Prior art keywords
absorber
generator
pipe
evaporator
liquid
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
Application number
US348743A
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English (en)
Inventor
Kindermann Erich
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.)
DEUTSCHE GASGLUHLICHT-AUER-GESELLSCHAFT mbH
Gasgluhlicht Auer Deutsch GmbH
Original Assignee
Gasgluhlicht Auer Deutsch GmbH
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Publication date
Application filed by Gasgluhlicht Auer Deutsch GmbH filed Critical Gasgluhlicht Auer Deutsch GmbH
Application granted granted Critical
Publication of US1875875A publication Critical patent/US1875875A/en
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Expired - Lifetime legal-status Critical Current

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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
    • F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

Definitions

  • Absorption refrigerating machinesworliing periodically with mixtures of liquid 'wlll require a device for the return of the re's1due of the solvent from the refrigerator to the absorption device. -It is not possible to construct the evaporator as a pot-like liquid collector without the use of mechanical closing members, and in such collectors the liquid of greater specific gravity will not flow ofi' at once.
  • the return of the residue is particularly difcult, if the said residue of the solvent forms a constant mixture with the freshly admitted condensate owing to physical or chemical action, and thus the removal of the residue, if it is eected' only after a fresh admission of condensate, will be possible only by continuous dilution; With stationary machines it is necessary to remove the residue after the fresh admission of condensate, since mechanical closing elements cannot be employed with these household appliances.
  • the present invention relates to a method and apparatus for the return of the solvent in a safe manner without any losses thereof.
  • the admission is effected during the period of condensation and only such quantities of solvent are returned to the generator-absorber as have given olf excess refrigerant while producing cold.
  • the simple evaporatmg vessel is dispensed with and is substituted by a system of individual evaporators, whose aggregate capacity is as large as, or larger than, the maximum quantity of refrigerant forced out.
  • the evaporating chambers of the individual evaporators are in open connection, and the liquid chambers are connected by means of circulation pipes, since they are charged with condensate not simultaneously but in succession in order to be able to remove the solvent, which in this manner is transferred or conveyed to the last individual evaporator during the charging operation.
  • the liquids will be til generator-absorber is effected in various ways according tothe present invention. As the available space in the system corresponds to the maximum quantity of condensate, it is obvious that in the case of relatively high condenser pressure the system will b e filled only partly and considerable quantities of solvent will collect therein.
  • the solution discharged from the last individual evaporator, according to the present invention can be conveyed to the generatorabsorber in various ways. lf the evaporator is at a higher level than the generator-absorber, no special pump or other transferring device is necessary and the solvent is allowed to pass into the generator-absorber by providing a suiiicient head. If the evaporator is placed at a lower level than the generatorabsorber, the supply according to the present invention is effected by means of the pumping effect of rising gas bubbles, corresponding to the evaporation proceedings in vertical heating tubes or to the operation of an air-lift.
  • the solution passes from the evaporator to a vertically arranged pipe with narrow cross-section, said pipe being heated from outside whereby the solution will be further relieved of gas and through the action of the risinggas bubbles in the various liquid containers it is lifted to the level of the generator-absorber.
  • I-Ieating can be effected leither by means of an additional source of heat or through the hot solution from the boiler or generator absorber.
  • the solution enters in the same manner as described before into a vertically arranged pipe of narrow crosssection, into which pipe the vapours of the refrigerant expelled from the solution to the boiler or generator-absorber are passed, and during their upward flow to the condenser they will effect-the conveyance of the solution in the same manner as referred to above.
  • Figure 1 shows the system with helical separate evaporators; the boiler or generator-absorber lying at a lower level.
  • Figure 2 shows a similar system with cylindrical separate evaporators.
  • FIG. 3 shows a system in which the boiler or generator-absorber lies at a higher level than the helical separate evaporators and conveying by heating from outside.
  • Figure 1- shows the same as Figure 3, but with conveying by the vapor to be condensed.
  • FIGS 1 and 2 show a system in which separate evaporators are provided.
  • the discharge of the solvent is effected by means of an overflow owing to high fall by gravity.
  • the discharge is effected by heating the vapors of the refrigerant from outside.
  • l designates the system of separate evaporators, which latter are shown in Figure 2 as cylindrical containers a to g, while according to Figure l they possess the form of a horizontal helical pipe.
  • the individual windings or coils a to g of this pipe form the separate evaporators and are connected to a pressure compensating pipe 4. by means of the pressure compensating nozzles 2 and 3.
  • a return pipe 6 connects the last evaporator g or g respectively, with the generator-absorber 7.
  • the liquid With ⁇ n the conveying pipe 6 the liquid willcommunicate with that contained in the evaporator g, that is to say the level of the4 liquid is so high that the latter can be heated by the hot solution from the generator-absorber passing through the circulating device and 5.
  • refrigerant 1s expelled in the state of vapor, which latter will carry the liquid up to the separator 14 if the generation of steam is sufficiently strong and the conveying pipe possesses a suciently small cross-section.
  • the vapors could be conducted from said separator 14 directly to the condenser, but this is not intended in the present instance, and provision is made for the vapors and solution to pass together through the pipe 15 to the generator-absorber.
  • Figure 4 illustrates the same evaporating system, however in this instance the conveying means, are altered in conformity with the method observed.
  • the solution flows from the last separate evaporator g through the pipe 6 to the liquid separator 14.
  • the solution remaining in the separator 14 passes to the generatorabsorber through a pipe 15.
  • the,step which consists in returning said solvent from the condenser through the evaporator to the generatorabsorber during the period of heating the generator-absorber and of condensing the refrigerant.
  • An absorption refrigerating apparatus comprising a generator-absorber having an inlet and an outlet, a condenser whose inlet is connected with the outlet of the generatorabsorber, and evaporating means having an inlet connected with the outlet of the condenser and an outlet connected with the inlet of the generator-absorber, said means consisting of a plurality of separate evaporators each having an upper space for gas and a lower space for liquid, the gas spaces of all of said evaporators being in permanent communication with each other, while the liquid spaces of the several evaporators normally hold separate bodies of liquid but are connected in series to permit successive passage of liquid from one evaporator to the next.
  • An apparatus in which the generator-absorber is at a higher level than the outlet of the last evaporator, and in which a pipe is provided for conveying liquid from such outlet upwardly to the generator-absorber, and in which a conduit connected with the generator-absorber conveys hot liquid from the generator-absorber to the vicinity of said pipe, to heat the rising column of liquid and produce gas bubbles therein.
  • a pipe is provided for conveying liquid from such outlet upwardly to the generator-absorber, and in which a connection is provided for leading gases to the lower portion of said pipe, ⁇ from a point located between the outlet of the generator-absorber and the inlet of the condenser.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
US348743A 1928-03-26 1929-03-21 Refrigerating method and apparatus Expired - Lifetime US1875875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1875875X 1928-03-26

Publications (1)

Publication Number Publication Date
US1875875A true US1875875A (en) 1932-09-06

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ID=7747130

Family Applications (1)

Application Number Title Priority Date Filing Date
US348743A Expired - Lifetime US1875875A (en) 1928-03-26 1929-03-21 Refrigerating method and apparatus

Country Status (3)

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US (1) US1875875A (fr)
FR (1) FR672061A (fr)
GB (1) GB308692A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115682472B (zh) * 2022-11-01 2024-09-24 浙江宝丰科技股份有限公司 一种蒸发式冷凝器

Also Published As

Publication number Publication date
FR672061A (fr) 1929-12-23
GB308692A (en) 1930-06-26

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