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US2442272A - Degreasing apparatus embodying means for confining solvent vapor - Google Patents

Degreasing apparatus embodying means for confining solvent vapor Download PDF

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Publication number
US2442272A
US2442272A US527513A US52751344A US2442272A US 2442272 A US2442272 A US 2442272A US 527513 A US527513 A US 527513A US 52751344 A US52751344 A US 52751344A US 2442272 A US2442272 A US 2442272A
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tank
frame
wall
solvent
confining
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US527513A
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Jaffa Mose
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/04—Apparatus

Definitions

  • My invention relates to a new and improved degreasing apparatus for degreasing metal articles or the like.
  • One of the objects of my invention is to provide a portable degreasing apparatus which utilizesa grease-solvent which is or may be vaporized under operating conditions.
  • a grease-solvent which is or may be vaporized under operating conditions.
  • Such solvent may be tetra-chloro-ethylene, CChzCCh, which is also designated as perchloroethylene. a boiling point of 121 C.
  • Another object of my invention is to provide a portable degreasing unit which has means for preventing the vapor of the solvent from entering the work-room.
  • Another object is to provide an apparatus which has a tank whose upper end has an outer and laterally extending exhaust casing, and a cover for the tank which is located above said casing.
  • Fig. l is a front elevation of one embodiment which is provided with a spray head.
  • the upper positions of the cover for the tank and of the frame on which said cover is supported, are. shown inbroken lines.
  • Fig. 2 is a vertical section, partially in elevation, of a second embodiment.
  • Fig. 3 is a section on the lines 3-3 of'Fig. '1 and Fig. 2, part of the representation of the frame [a being omitted.
  • Fig. 4 is a side elevation of Fig. 1, on a smaller scale.
  • Fig. 5 is a top plan of Figs. 1 and 2, taken at a level directly above the cover.
  • the tank I which is rectangular in horizontal cross-section, has a bottom tank-wall, in which the end 4a of pipe 4 is fixed by means of'a liquid- This has tight joint.
  • the other end of said pipe 4 is connected to the casing of a pump I, which is operated by motor 5.
  • Said casing has a discharge pipe 6.
  • the solvent such as perchloroethylene or the like, is forced out of the casing of pump 1, upwardly through pipe 5.
  • the pipe 6 is connected to a flexible pipe 8, to which spray-head 9 is connected.
  • the heater is of the conventional electric type.
  • the solvent is maintained at the bottom of the tank I, in a pool P whose height is maintained at about four inches. This pool of solvent is maintained at a temperature which is below and close to its boiling point by means of the heater and thermostat. Some of the solvent will vaporize and some of said vapor will condense on the thin vertical metal walls of tank I, which radiate heat .very freely so that the temperature of said walls frame F which is adjacent heater 2 I, is vertically slotted, in order to clear tubes 20 when the frame F is raised and lowered.
  • Said frame F has horizontal supporting flanges I50 at the bottom ends of its vertical walls I517. The horizontal flange I50 which is adjacent heater 2! is horizontally slotted, so that the tubes 20 will not obstruct the free raising and lowering of frame F.
  • Standards l5 are fixed to the top wall l5a of frame F.
  • top wall 15a of frame F is provided with a series of openings 18, so that the vaporized solvent can pass from the bottom of the tank to the interior thereof.
  • cover I! is fixed to the top horizontal flanges of standards l5.
  • An eye llb is fixed to the top wall of coverported from a hook H which is fixed to diagonal bar I I.
  • the top of said hook H is threaded and said hpok is fixed to bar- II by nut He.
  • Said bar H is fixed to the tops of standards l9, Whose bottom end-portions are fixed to the outer wall of tank I.
  • the frame aeeaam 22 communicate with the interior space of an external exhaust casing l9, which is fixed to the outer wall of tank I.
  • Said exhaust casing is has an outlet port 28, which is connected to exhaust pipe 24, which is provided with a blower 25, which is operated by motor 26.
  • the liquid solvent will be discharged downwardly through the holes 28, upon the metal objects which are supported on the top wall l5a of frame F, or which are held in perforated baskets which are supported on said top wali of frame F.
  • the metal objects will thus be supported above the top of pool P.
  • the articles can be located in perforated baskets which are located in tank I.
  • the frame F can be raised high enough so that it will not be in the path of the spray of solvent which is produced by spray-head 9.
  • the objects can be supported on frame F, or in perforated baskets which are supported on frame F, and said frame can be raised to any convenient height, at which cover if is located above spray-head 9.
  • frame F oan be located within the tank i, at any desired distance below the top of tank i. or frame F can be located above the top of tank i, at any desired height above said top of tank i.
  • the motor 29 and blower 25 can be operated. if desired, or the operation of motor 26 and blower it can be stopped.
  • the spray-pipe 21 is shaped and located so that I the frame F and the uprights 85 can be raised until said frame F is above the tank, without contacting with said spray-pipe.
  • Said spraypipe can be of rectangular shape, located close to the upstanding tank-walls of tank i.
  • the spray openings 28 are directed so as to spray the solvent over the entire horizontal cross-section of the tank I.
  • a degreasing device comprising a tank, said tank having upstanding tank-walls and a bottom tank-wall, an electric heater associated with said :tank, heat-transmitting means associated with said heater, said heat-transmitting means being located in said tank adjacent its bottom tank-wall and being fixed to said tank, a frame located in lowered, said frame having upstanding supporting means fixed thereto, a cover ,for said tank, said cover being connected to the top of said upstanding supporting means, said cover closing said tank when said frame rests on said bottom tank-wall, said tank having an external exhaustcasing fixed to said tank adjacent the upper end of said tank, the top of said exhaust casing being below said cover when said cover is in closing position, the upstanding tank-walls having perforations at said exhaust casing to provide communication between said tank and the interior space of said exhaust-casing, said exhaust-casing being closed save at an outlet port in the outer wall of said casing, a spray pipe located in said tank below said perforations, pumping means for pumping liquid from the bottom of
  • a degreasing device comprising a tank which has a bottom tank wall and upstanding tank walls, said tank being open at its top, heater tube means located in said tank, a frame which is shaped to be located in said tank, said heater tube means being located in said tank above said bottom tank wall and extending inwardly into said tank from an upstanding tank wall, said frame being vertically movable up-and-down relative to said tank, said frame having a top wall and a bottom supporting flange and an upstanding wall which connects said top wall and said bottom supporting flange, said frame being downwardly movable relative to said tank to a lower position in which said bottom supporting-wall rests on said bottom tank well, said tube means being located in a vertical zone between said top wall and said bottom supportingwall when said frame is in said lower position, said bottom supporting-wall and said upstanding wall being shaped to clear said tube means, said frame being upwardly movable above the top of said tank, a cover for said tank, said cover being located above said frame and being fixed to said frame, said cover

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

M. JAFFA May 25, 194%.
DEGREASING APPARATUS EMBODYING MEANS FOR CONFINING SOLVENT VAPOR 3 Sheets-Sheet 1 Filed March 21, 1944 INVENTORL Mose Jajfa BY ma /(r 1%1444/ ATTORNEYS May 25,1942, AFFA 2,442,272
DEGREASING APPARATUS EMBODYING MEANS FOR CONFINING SOLVENT VAPOR Filed March 21, 1944 3 Sheets-Sheet 2 IN EN 0R. Mose a BY 77M f ATTORNEYS May 25, 1948. M, JAFFA 2,442,272
DEGREASING APPARATUS EMBODYING MEANS FOR CONFINING SOLVENT VAPOR Filed March 21, 1944 3 Sheets-Sheet 3 j .i a I 12 i BY I mmmzzm/ 20 2 ,0 ATTORNEYS Patented May 25, 1948 DEGREASING APPARATUS EMBODYING MEANS FOR VAPOR CONFINING SOLVENT Mose Jafla, Brooklyn, N. Y.
A lication March 21, 1944, Serial No. 527,513
2 Claims. 1
My invention relates to a new and improved degreasing apparatus for degreasing metal articles or the like.
One of the objects of my invention is to provide a portable degreasing apparatus which utilizesa grease-solvent which is or may be vaporized under operating conditions. Such solvent may be tetra-chloro-ethylene, CChzCCh, which is also designated as perchloroethylene. a boiling point of 121 C.
Another object of my invention is to provide a portable degreasing unit which has means for preventing the vapor of the solvent from entering the work-room.
Another object is to provide an apparatus which has a tank whose upper end has an outer and laterally extending exhaust casing, and a cover for the tank which is located above said casing.
Numerous additional objects of my invention will be stated in the annexed description and drawings, which illustrate preferred embodiments thereof.
Fig. l is a front elevation of one embodiment which is provided with a spray head. The upper positions of the cover for the tank and of the frame on which said cover is supported, are. shown inbroken lines.
Fig. 2 is a vertical section, partially in elevation, of a second embodiment.
Fig. 3 is a section on the lines 3-3 of'Fig. '1 and Fig. 2, part of the representation of the frame [a being omitted.
Fig. 4 is a side elevation of Fig. 1, on a smaller scale.
Fig. 5 is a top plan of Figs. 1 and 2, taken at a level directly above the cover.
Both embodiments are the same, save that the embodiment of Fig. 1 has a spray-head 9 andthe embodiment of Fig. 2 has a spray pipe 21, which has spraying perforations 28.
The tank I, which is rectangular in horizontal cross-section, has a bottom tank-wall, in which the end 4a of pipe 4 is fixed by means of'a liquid- This has tight joint. The other end of said pipe 4 is connected to the casing of a pump I, which is operated by motor 5. Said casing has a discharge pipe 6. The solvent, such as perchloroethylene or the like, is forced out of the casing of pump 1, upwardly through pipe 5.
In the embodiment of Fig. l, the pipe 6 is connected to a flexible pipe 8, to which spray-head 9 is connected.
The heater is of the conventional electric type.
electric heater 2|, whose heat is communicated to the tubes 20. These tubes 20 are closed at their free ends, and they are laterally disposed. These parts and the control whereby a substantially uniform temperature of the solvent is maintained, are standard equipment, so that no detailed description thereof is necessary. The tubes 20, which are closed to save adjacent the heater, conduct the heat to the interior of the tank.
The solvent is maintained at the bottom of the tank I, in a pool P whose height is maintained at about four inches. This pool of solvent is maintained at a temperature which is below and close to its boiling point by means of the heater and thermostat. Some of the solvent will vaporize and some of said vapor will condense on the thin vertical metal walls of tank I, which radiate heat .very freely so that the temperature of said walls frame F which is adjacent heater 2 I, is vertically slotted, in order to clear tubes 20 when the frame F is raised and lowered. Said frame F has horizontal supporting flanges I50 at the bottom ends of its vertical walls I517. The horizontal flange I50 which is adjacent heater 2! is horizontally slotted, so that the tubes 20 will not obstruct the free raising and lowering of frame F.
Standards l5 are fixed to the top wall l5a of frame F.
As shown in Fig. 3, top wall 15a of frame F is provided with a series of openings 18, so that the vaporized solvent can pass from the bottom of the tank to the interior thereof.
cover I! is fixed to the top horizontal flanges of standards l5.
When frame F is supported upon the bottom wall of tank I, said cover I! closes theopen top of tank I.
An eye llb is fixed to the top wall of coverported from a hook H which is fixed to diagonal bar I I. The top of said hook H is threaded and said hpok is fixed to bar- II by nut He. Said bar H is fixed to the tops of standards l9, Whose bottom end-portions are fixed to the outer wall of tank I.
As shown in broken lines in Fig. 1, the frame aeeaam 22 communicate with the interior space of an external exhaust casing l9, which is fixed to the outer wall of tank I. Said exhaust casing is has an outlet port 28, which is connected to exhaust pipe 24, which is provided with a blower 25, which is operated by motor 26.
When the cover I! is in its closing position, any vapor which rises to the top of tank i will escape through perforations 22 into the interior space of the exhaust casing i9, and such vapors will be discharged through exhaust pipe 24 to any convenient outlet, 50 that such vapor cannot enter the work-room.
Only a small amount of vapor will be produced under normal working conditions, so that the fan-blower 25 will be operated at low speed, and the internal pressure in tank I can be kept close to atmospheric pressure. The vapor which is forced through pipe 2| can be condensed and returned to the tank.
In the embodiment of Fig. 2, the liquid solvent will be discharged downwardly through the holes 28, upon the metal objects which are supported on the top wall l5a of frame F, or which are held in perforated baskets which are supported on said top wali of frame F.
The metal objects will thus be supported above the top of pool P. In the embodiment of Fig. 1, when the sprayhead 8 is used, the articles can be located in perforated baskets which are located in tank I.
The frame F can be raised high enough so that it will not be in the path of the spray of solvent which is produced by spray-head 9.
' As an alternative, the objects can be supported on frame F, or in perforated baskets which are supported on frame F, and said frame can be raised to any convenient height, at which cover if is located above spray-head 9. When the cover i7 is above spray-head 9, frame F oan be located within the tank i, at any desired distance below the top of tank i. or frame F can be located above the top of tank i, at any desired height above said top of tank i.
When the spray-head 9 is utilized in the embodiment of Fig. 1,- the motor 29 and blower 25 can be operated. if desired, or the operation of motor 26 and blower it can be stopped.
The spray-pipe 21 is shaped and located so that I the frame F and the uprights 85 can be raised until said frame F is above the tank, without contacting with said spray-pipe. Said spraypipe can be of rectangular shape, located close to the upstanding tank-walls of tank i. The spray openings 28 are directed so as to spray the solvent over the entire horizontal cross-section of the tank I.
I have described preferred embodiments of my invention, but numerous changes and additions an'd'omissions can be made without departing from its scope, as defined in the appended claims.
Iclaim:
1, A degreasing device comprising a tank, said tank having upstanding tank-walls and a bottom tank-wall, an electric heater associated with said :tank, heat-transmitting means associated with said heater, said heat-transmitting means being located in said tank adjacent its bottom tank-wall and being fixed to said tank, a frame located in lowered, said frame having upstanding supporting means fixed thereto, a cover ,for said tank, said cover being connected to the top of said upstanding supporting means, said cover closing said tank when said frame rests on said bottom tank-wall, said tank having an external exhaustcasing fixed to said tank adjacent the upper end of said tank, the top of said exhaust casing being below said cover when said cover is in closing position, the upstanding tank-walls having perforations at said exhaust casing to provide communication between said tank and the interior space of said exhaust-casing, said exhaust-casing being closed save at an outlet port in the outer wall of said casing, a spray pipe located in said tank below said perforations, pumping means for pumping liquid from the bottom of said tank to said spray pipe.
2. A degreasing device comprising a tank which has a bottom tank wall and upstanding tank walls, said tank being open at its top, heater tube means located in said tank, a frame which is shaped to be located in said tank, said heater tube means being located in said tank above said bottom tank wall and extending inwardly into said tank from an upstanding tank wall, said frame being vertically movable up-and-down relative to said tank, said frame having a top wall and a bottom supporting flange and an upstanding wall which connects said top wall and said bottom supporting flange, said frame being downwardly movable relative to said tank to a lower position in which said bottom supporting-wall rests on said bottom tank well, said tube means being located in a vertical zone between said top wall and said bottom supportingwall when said frame is in said lower position, said bottom supporting-wall and said upstanding wall being shaped to clear said tube means, said frame being upwardly movable above the top of said tank, a cover for said tank, said cover being located above said frame and being fixed to said frame, said cover closing the top of said tank when said bottom supporting-wall rests on said supporting means, said top walLof said frame having an opening therein, a, pump which has an inlet which is connected to said bottom tank wall, said pump having an outlet which is located to communicate with the interior of said tank above said frame when said frame is in said lower position.
MOSE JAFFA.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,057,177 Wolfl' Oct. 13, 1936 2,208,659 Boggs July 23, 1940 2,253,579 Phillips Aug. 26, 1941 2,277,919 Liptak Mar. 31, 1942 2,305,166 Koch Dec. 15, 1942
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651607A (en) * 1948-11-17 1953-09-08 Detrex Corp Degreasing machine or apparatus
US2653116A (en) * 1949-03-16 1953-09-22 Cee Bee Chemical Co Inc Method of removing sealant from fuel tanks
US2653617A (en) * 1946-07-15 1953-09-29 Gray Mills Corp Parts washer with safety hose
US2653420A (en) * 1947-05-02 1953-09-29 Acquilla R Ruth Method and apparatus for cleaning radiator tubes and the like
US2747590A (en) * 1951-10-04 1956-05-29 Harold N Ipsen Washer for workpieces
US2867225A (en) * 1953-10-26 1959-01-06 Metalwash Machinery Co Degreaser
US3061898A (en) * 1959-09-16 1962-11-06 Richard K Maliszewski Denture flask de-waxer
US3128779A (en) * 1953-12-21 1964-04-14 Frank E Morris Line cleaning equipment
DE1208150B (en) * 1959-06-01 1965-12-30 Du Pont Process for the continuous degreasing, phosphating, rinsing and drying of metal bodies
US3345994A (en) * 1965-09-20 1967-10-10 Grassland Dairy Products Inc Apparatus for cleaning articles
US3350734A (en) * 1964-03-06 1967-11-07 Uddeholms Ab Degreasing of strip material by solvent vapour
US3675666A (en) * 1967-04-13 1972-07-11 Coltex S L Apparatus for cleaning metallic parts
US3896829A (en) * 1971-08-12 1975-07-29 Finishing Equipment Inc Apparatus for spraying and otherwise treating pieces in a vapor
US4630625A (en) * 1981-01-22 1986-12-23 Quadrex Hps, Inc. Tool decontamination apparatus
US4773436A (en) * 1987-03-09 1988-09-27 Cantrell Industries, Inc. Pot and pan washing machines
US5246578A (en) * 1991-02-20 1993-09-21 Von Roll Ag Filter press and cleaning means therefor
US5464033A (en) * 1994-05-20 1995-11-07 Major Industrial Technology, Inc. Hot solvent cleaning tank

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2057177A (en) * 1932-08-01 1936-10-13 Wacker Chemie Gmbh Apparatus for cleaning and degreasing metal articles and the like
US2208659A (en) * 1936-08-08 1940-07-23 Boggs Charles Lee Cleaning device
US2253579A (en) * 1940-06-03 1941-08-26 Dow Chemical Co Portable degreasing unit
US2277919A (en) * 1939-07-18 1942-03-31 Stephen J Liptak Watch cleaning machine
US2305166A (en) * 1940-06-06 1942-12-15 Roderic M Koch Degreasing apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2057177A (en) * 1932-08-01 1936-10-13 Wacker Chemie Gmbh Apparatus for cleaning and degreasing metal articles and the like
US2208659A (en) * 1936-08-08 1940-07-23 Boggs Charles Lee Cleaning device
US2277919A (en) * 1939-07-18 1942-03-31 Stephen J Liptak Watch cleaning machine
US2253579A (en) * 1940-06-03 1941-08-26 Dow Chemical Co Portable degreasing unit
US2305166A (en) * 1940-06-06 1942-12-15 Roderic M Koch Degreasing apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653617A (en) * 1946-07-15 1953-09-29 Gray Mills Corp Parts washer with safety hose
US2653420A (en) * 1947-05-02 1953-09-29 Acquilla R Ruth Method and apparatus for cleaning radiator tubes and the like
US2651607A (en) * 1948-11-17 1953-09-08 Detrex Corp Degreasing machine or apparatus
US2653116A (en) * 1949-03-16 1953-09-22 Cee Bee Chemical Co Inc Method of removing sealant from fuel tanks
US2747590A (en) * 1951-10-04 1956-05-29 Harold N Ipsen Washer for workpieces
US2867225A (en) * 1953-10-26 1959-01-06 Metalwash Machinery Co Degreaser
US3128779A (en) * 1953-12-21 1964-04-14 Frank E Morris Line cleaning equipment
DE1208150B (en) * 1959-06-01 1965-12-30 Du Pont Process for the continuous degreasing, phosphating, rinsing and drying of metal bodies
US3061898A (en) * 1959-09-16 1962-11-06 Richard K Maliszewski Denture flask de-waxer
US3350734A (en) * 1964-03-06 1967-11-07 Uddeholms Ab Degreasing of strip material by solvent vapour
US3345994A (en) * 1965-09-20 1967-10-10 Grassland Dairy Products Inc Apparatus for cleaning articles
US3675666A (en) * 1967-04-13 1972-07-11 Coltex S L Apparatus for cleaning metallic parts
US3896829A (en) * 1971-08-12 1975-07-29 Finishing Equipment Inc Apparatus for spraying and otherwise treating pieces in a vapor
US4630625A (en) * 1981-01-22 1986-12-23 Quadrex Hps, Inc. Tool decontamination apparatus
US4773436A (en) * 1987-03-09 1988-09-27 Cantrell Industries, Inc. Pot and pan washing machines
US5246578A (en) * 1991-02-20 1993-09-21 Von Roll Ag Filter press and cleaning means therefor
US5464033A (en) * 1994-05-20 1995-11-07 Major Industrial Technology, Inc. Hot solvent cleaning tank

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