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Publication numberUS1810750 A
Publication typeGrant
Publication dateJun 16, 1931
Filing dateJan 14, 1928
Priority dateJan 15, 1927
Publication numberUS 1810750 A, US 1810750A, US-A-1810750, US1810750 A, US1810750A
InventorsSchulim Braunstein, Semion Meerson
Original AssigneeSchulim Braunstein, Semion Meerson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Process for the generation of alpha refrigerant jet for dental operations
US 1810750 A
Abstract  available in
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Description  (OCR text may contain errors)

June 16, 1931. s. BRAUNSTEIN ETAL 1,310,750

PROCESS FOR THE GENERATION OF A REFRIGERANT JET FOR DENTAL OPERATIONS Filed Jan. 14, 1928 SIM ve ntou fiahulim Brqunsfiein 17627: i 0 71 Meeruson Patented June; 16, 1931 AUNITED-STATES A -EN1-4 FF1E soHULIM BRAUNST'EIN ANDSEMION MEERSON', or BERLIN, GERMANY- rRooEss OR THE GENERATION or a aurmenaenr arrett DENTAL OPERATIONS "Application meal ianu'ar' ia, 192a seriar'No."aeeseafaaaan Germany Ja uar 15, 1927.

j Our invention relates to the generation of a refrigerant jet or stream for dental operations and the like in cases. where a local anaestheticis called for and contemplates the We nployment as a refrigerant of air or other "gas and of liquefiedair or the like as a source ofcold. 7 7 Y According to our invention we use as a source 'ofcold the cold vapour of liquefied air 101 01 gas. 'lhese'cold vapours are ,led counter to, and '0 to pelled byja blower or the like.

in close proximity to the stream of air be cooled, such stream being im- We further M provide means for'efiecting'andicontrolling "'lfil vapourization ofthe liquefiedair or gasyand I I p c V ance ofthe'present process is illustrated diawe achieve'this efiiect by passing warm air through the liquefied air or gas. "It is a further feature of our invention that this warm air "is tapped. from the stream of air 2020 1: its way to be jcooled, 'there being set up in the lcontaiiner for the'liquefied air or gas the necessary excess pressure for imp'elling v the val our throughthe cooler; s I 7 stoo a vehicle for cold in th ti course of flow'fis onlyavailab'le for'use for v :dental'surgery work if its temperature can b'e loweredquite gradually down to that requirements," for example with the employmerit of an oxygen stream cooled expansionof carbonic acid gas, heating devices be- ,in caused t-o act onthe delivery nozzle and being gradually cut out, whereby the tem- 3 5 'peratureof the oxygen streamwas'loweredto "that brought aboutzbyfthe. expansion of the 'carbonic ,acidgas. j

' QAccOrding to our "present invention the cooling Inedium dep'e nds; 'onfthe'required degradual variations of the temperaturefofzthe refrigerant vehicleji's brought about by corree ofcooling so that: it is; possible to operate more economically than known proci es inw ch P1 13 ig ly p s d arf nic. ac d "ga is se a a 9 9E1 2 m d um, 1ml approximately the same quantity is ex:

pended irrespective of the temperaturedesired. A further advantage of the invention resides in the'fe'ature that the heating de-j vices at the delivery nozzle for thev reirig erantv'ehicle are dispensed with,'and that the vapours of th'e'sourc'e of cold can be allowed to escape into the air after having passed through the cooling app aratus', without causing any detrimental effects to living beings.

1 In what foll'ows it'is assumed that liquefied 7 air is employed, it being understood that in lieuof liquefied air there may-beemployed condensed gases which vaporize atlow temperatures. o t i A constructionof apparatus for performf d y firbooompressor A through a pipe a fitted with a valve 6 into a drying ap paratus B inwhich it is. dried and ifdesired sterilized orfdisinfected. "Moisture 'with- V drawn from the "air at 'B *is run 0a from'time" to tim'elbyop eni'ng, airun so'fl' cock c." From the {apparatus B air passes through the pipe 03 into the'cooling apparatus O in whichit is o cooled to the desired temperature by means of surfacecooling, the cooling operation be- "ing effected according to the counter current principle. I From C it is led to the point of fconsumptionthrl u h a tube fitted with, Cut-'Offficock A The cold vapour: used as cooling medium producedby contact of warm with liquefied v air in the container-D issues'through the pipe Z into the cooling'apparatusiG and traverses the samein the direction opposite to the flow l of air to be used as a refrigerant, extracting therefrom= a large part of its heat and escap-, ingto the atmosphere through the pipe 9. A

"branch z'jfrom the pipe d leadsto the con 'tainer D thefwarm'air necessary for vapour v izing'theliq'ui'cl air. Bym'eans of the valve fla the quantity vapourized can be adjusted; depending on" the quantity of cooling medium lexpendedyth'e-rate of cooling and the quan-o tityof air used as a refrig erant can bevariedin accordance with requirements *Inreleased in "the ip-e "zadirecay beyond the point where it issues from the container D is a cut-off valve h adjustment of which may also serve to regulate the temperature of the air to be used as a refrigerant, but which serves principally to cut off the supply of liquefied air from the atmosphere when the apparatus is out of use. p p

With the process according to the invention it is possible to cool air at roomtemperature gradually and at will to the low temperature necessary for anaesthetic purposes. It is to be understood that for the purpose of our invention we may use a stream of oxygen or any equivalent gaseous medium instead of a stream of air as a refrigerant. In the aforegoing'specification and in the claims hereafter, we have specified air as the most expedient gaseous medium for dental or similar purposes.

What we claim as our invention and desire to secure by Letters Patent of the United States, is

1. A process for the generationof a refrigerant stream for dental purposes consisting in impelling a stream of air, subjecting said stream of air to the cooling influence of the vapor of a liquefied gas, and by-passing a part of the stream of air into the liquefied gas to vaporize the same.

2. A process for the generation of a refrigerant stream for dental purposes consisting in impelling a stream of air, subjecting said stream of air to the cooling influence of the vapor of a liquefied gas, and controlling the vaporization of said liquefied gas by passing an uncooled portion of the stream of air therethrough. e 3. A process for the generation ofa refrigerant stream for dental purposesconsisting in impelling a stream of air, and subjecting said stream of air to the cooling influence of the vapor of a liquefied gas, controlling the vaporization of said liquefied gas by passing air therethrough, and branching said last-named air oif said first-named stream of am.

4. A'process for the generation of a refrig erant stream for dental purposes consisting in impelling a stream of air, subjecting said stream of air to the cooling influence of the vapor of a liquefied gas, vaporizing said liquefied gas by passing an uncooled portion of the stream of air through said liquefied gas, and varyingthe temperature ofsaid stream of air by accordingly varying the rate of passage of air through-said liquefied gas.

7 5. A process "for the generation of a refrigerant stream for dental purposes consisting in impelling a stream of air, drying said stream of air, subjecting said stream of air to the cooling lnfluence of the vapor of a liquefied gas, and diverting a portion of the dried air into the liquefied gas to vaporize the same. i

6. A process for the generation of a refrigerant stream for dental purposes consistin in impelling a stream of air, drying said stream of air, subjecting said stream of air to the cooling influence of the vapor of a liquefied gas, controlling the vaporization of said liquefied gas by passing air therethrough, and branching said last-named air off said first-named stream of air.

7. An apparatus for the generation of a refrigerant stream for dental purposes, comprising in combination, means for impelling a stream of air, acooling apparatus for said stream of air, a connection between said impelling meansand said cooling apparatus, a container for a liquefied gas, and a connection between said container and said cooling apparatus whereby the vapors arising from the liquefied gas insaid container are passed through said cooling apparatus in an opposite direction to the flow of air therethrough to extract heat from said stream of air.

8. An apparatus for the generation of a refrigerant stream for'dental purposes, comprising in combination, means for impelling Q a stream of air, a cooling apparatus for said stream of air, a connection between said impelling means and said cooling apparatus, a contamer for a liquefiedgas, a connection between said container and said cooling ap- Q paratus whereby the vapors arising from the liquefied gas in said container are passed through said cooling apparatus in an opposite direction to the flow of air therethrough to extract heat from said stream of air, and -1 means for passing through said container a part of the air for the purpose of controlling the vaporization of the liquefied gas in said container.

9. An apparatus for the generation of 1 4 refrigerant stream'for dental purposes, com

prising in combination, means for impelling a stream of air, a cooling apparatus for said stream .of air, a connection between said impelling means and said cooling apparatus, a,,1 10 container for a liquefied gas, a connection between saidcontainer and said cooling apparatus whereby the vapor arising from the liquefied gas in said container is passed through said cooling apparatus to extract heat from said stream of air, means for pass- I ing through said container air for the purpose of controlling the vaporization of the liquefied. gas in said container, and means for tapping said last-named air from the 1 stream of air between said impelling means and said cooling apparatus. f

10. An apparatus for the generation of a refrigerant stream for dental purposes, comv prising in combination, means for impelling- I a stream of air, an apparatus for drying said stream of air, a cooling apparatusfor said stream of air, a connection between said dry- 1ng apparatus. and said cooling apparatus, a

container for a liquefiedgas, means for.di-.--

verting some of the air into the container to vaporize the liquefied gas therein, and a connection between said container and said cooling apparatus whereby the Vapors arising from the liquefied gas in said container are passed through said cooling apparatus in'an opposite direction to the. flow of air therethrough to extract heat from said streamof a1r.

11. An apparatus for the generation of a refrigerant stream for dental purposes, comprising in combination, means for impelling a stream of air, a device for drying said air, a cooling apparatus for said stream of air, a connection between said drying device and said cooling apparatus, a container for a liquefied gas, a connection between said container and said cooling apparatuswhereby V the vapor arising from the liquefied gas in said container is passed through said cooling apparatus to extract heat from said stream of air, means for tapping air from said firstnamed streamof air between said drying device and said cooling apparatus and passing tapped air through the liquefied gas, and

means for regulating the passage of the tapped air., V

. SCHULIM BRAUNSTEIN. SEMION MEERSON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4287724 *Dec 17, 1979Sep 8, 1981Morehouse Industries, Inc.Air chiller/drier
US5357764 *Oct 27, 1992Oct 25, 1994Dickman & Dickman, Inc.Condensate evaporator
Classifications
U.S. Classification62/93, 62/406, 62/95, 62/439, 62/51.1
International ClassificationA61C1/00
Cooperative ClassificationA61C1/0007
European ClassificationA61C1/00C