US 2092257 A
Description (OCR text may contain errors)
Sept. 7, 1937. G, A LEWIS 2,092,257
BEER COIL CLEANER Original Filed Oct. 21, 1933 iii n, :if f5 d KEE/ (79W 6A, zz
Inventar www Patented Sept. 7, 1937 UNiTED STATES ATE GFFMJE Reiiled for abandoned application Serial No. 694,572, October 21, 1933.
This application August 14, 1935, Serial No. 36,075
This invention relates to beer coil cleaners.
This application is a substitute for the applicants allowed and forfeited application Ser, No.
694,572 filed October 21, 1933, and allowed April It is an object of this invention to provide an improved beer coil cleaner which is relatively simple and inexpensive in construction and efflcient in use.
Another object of this invention is: to provide an improved coil cleaner by means of which a simple cleansing fluid such as water, and a chemical and fungicidal cleansing uid such as that hereinafter referred to, may be circulated through beer cooling coils in the order named.
A further object of the invention is to provide an improved method for cleansing and washing beer cooling coils and by means of which method the growth of fungi in the coils may be prevented or at least materially retarded.
Other objects will appear hereinafter.
The invention will be best understood by reference to the accompanying drawing, showing a preferred form of construction of the new apparatus and in which:
The single figure in the drawing is, in general, diagrammatic and shows the preferrred arrangement of parts in the new apparatus.
Bacteria or fungus growths in beer cooling coils consist largely of moulds from the yeast used in making beer, acetic acid bacteria, and albumen. These substances accumulate or grow quite rapidly in beer .cooling coils, making it necessary to clean or flush the coils periodically, otherwise the accumulation in the coils will spoil the taste of the beer and cause it to taste bitter. It' is to prevent this that the' present apparatus and method have beenV designed.
To this end' the new coil cleansing apparatus, generally indicated at l in the drawing, is provided. This apparatus is arranged within a suitable portable cabinet or4 case Il and comprises a fluid pressure pump i2, which may be ofA any suitable or conventional design, and which is driven by an electric motor 9 of any desired or suitable type. A control switch I'3 is provided for the circuit to the motor 9, and a connecter ill is provided forattachment to av source of current such as a wall outlet. An indicator or tell-tale light l is provided in the motor circuit in front'of the switch i3'.
The iiuidV pressure pump I2 has a fluid intake sideV Ill and a fluid discharge side I6. Connected tothe discharge side I6 of the pump l2 is a sight glass IB throughl which the outgoing iluid circulates after passing from the pump I2. A flexible intake conduit or hose 2ileads to a chemical tankl 2i which is arranged on the intake side Il of the pump l2. A pressure gauge is arranged on the outlet or discharge side of the pump between the sight glass i8 and a flexible discharge hose i9.
The intake side il of the piunp i2 leads to the chemical tank 2l which has an open top over which is arranged a detachable closure 22. This tank 2i has an inlet 23 to which the flexible rubber hose or conduit 2H is attached.
A by-pass .'25 is provided between the intake and outlet sides Il and I6, respectively, of the pump l2 and a control or shut-olf valve i2 is arranged in this by-pass.
A conventional two coil draft beer cooling unit is generally indicated at 28 in the drawing and includes two Cooling coils 2l and 28 which are arranged within a suitable ice box or cooling chamber 25. To the uppermost convolution of the coil 2l is attached a faucet 3B and a faucet 3i is attached to the uppermost convolution of the coil 28.
The lowermost convolution of the coil 21 is connected to a conventional flexible conduit 32 which may be a rubber hose or a flexible tin tubing. This conduit 3?. is ordinarily connected (in dotted line position) to a conventional so-called beer rod which is generally indicated at 43. This so-called rod 43 projects into the beer barrel 33 and has an air intake 44. Similarly, the lowermost convolution of the coil 28 is connected to a flexible conduit 3ft that is similar to the conduit 32 and this conduit 3l! is in turn coni nected to a beer rod l5 which is similar to the rod 43; the beer rod d5 extending into a beer barrel or container 35.
interconnecting the two flexible conduits 32 and 34 is a coupling 38.
A short piece of rubber hose or tubing is indicated at lli in the drawing and a source of water under pressure is indicated at fil. l
Arranged at the outer end of the intake hose 24 or conduit is a connecter 36 by means of which the hose 2E, may be attached, as will be set forth hereinafter, either to the beer faucet 3l or to the water supply faucet lll. Attached to this connecter 36 is a gas pressure relief cock or valve 3l.
Operation To institute the coil cleansing and washing operation the connecter 3S on the intake hose or conduit 24 is attached to the source 6! of water under pressure; the conductor I4 is attached to an electric wall outlet or like source of current; the drain hose 4d is attached to the beer faucet 3i; the by-pass valve 42 is closed; the flexible conduits 32 and 34 are detached from the beer rods i3 and 45 and these conduits 32 and 34 are then connected by the coupling 33. During this operation the valves 46 in the beer rods 43 and 45 are, of course, shut off. The motor control switch i3 is then closed to set the motor 9 and its associated pump i2 in operation, whereupon water from the pressure supply source fil is led through the flexible intake hose or conduit 24, into and through the tank 2l and thence into the pump l2 through the intake side il thereof. The pump l2 then forces the Water through the discharge or outlet side l@ thereof, through the sight glass i8, into the conduit i9; thence through the beer faucet 3Q, coil 2l, conduit 32, coupling 38 and conduit 3Q; through the coil 23 and faucet 3l, out through the drain hose 43 to the sewer. This flow of water is kept up for suitable length of time to flush the beer cooling coils 2l and 28 thoroughly, whereupon the water supply is shut off at 4l, and the motor at i3, leaving 'the coils 2l and 28 full of water.
During this operation the tell-tale light i8 is illuminated and helps to illuminate the casing ll and the sight glass i8 so that the fluid flow I through the glass may readily be observed.
The drain hose. il@ is then detached from the beer faucet 3l and the hose 2li is attached to' the faucet 3l by means of connecter 36, in the manner shown in full lines in the drawing.
The closure 22 is then removed from the chemical tank 2l. An alkaline chemical cleansing and fungicidal charge or solution is then introduced into the tank 2l and the closure 22 therefor replaced. The motor control switch I3 is then closed to set the motor 9 and the pump l2 in operation whereupon the chemical cleansing and fungicidal solution in the tank 2| is drawn out of the tank 2l by way of the pump in-v take il, thence through the pump l2, out of the latter by way of its discharge side i6, and thence through the circuit l9-2-2l-32H31- 34- 23-3l-33 and 24 back into the tank 2l.. This circulation of the chemical cleansing and fungicidal solution through the coils 2l and 28 is kept up for a suitable length of time, at a preferred rate of about three gallons per minute, whereupon the pressure relief valve 37 is opened to permit the escape of gas formed in the system by action of the chemical cleansing agent, as will be pointed out more fully hereinafter. The parts are then rinsed by attaching the flexible conduit 2li to the water supply 4l, attaching the drain hose 4t* to the faucet 3|, and then circulating rinsing water through the system, which includes the coils 2l' and 28, for a suitable length of time until the rinse water is neutral to an alkali indicator.
After the washing and rinsing operations, the motor 9 is shut off, the drain hose 40 is detached from the beer faucet 3l, the flexible conduit 24 is detached from the water supply 4i the conduit i9 is detached from the beer faucet 35, and the conduits 32 and 34 are separated at the coupling 38 and reattached to the beer rods 43 and 45 so that beer may be drawn from the barrels 33 and 35 as desired.
To cleanse a single beer cooling coil by means of water, using the present apparatus, the intake side i7 of pump is connected to the water supply 4l by means of the conduit Z4 and the conduit i9 is attached to the uppermost convolution of the coil; and to cleanse a single coil with the chemical cleansing and fungicidal solution, hereinafter referred to, the conduit i9 is attached to the uppermost convolution of the single coil and the conduit 24 is attached to the lowerrnost con- Volutions thereof, whereupon the motor 9 is set in operation to circulate the cleansing fluid through the single coil.
While the chemical tank 2l may be charged with chemical cleansing agents or fungicides, other than that presently to be referred. to, a preferred composition for this purpose is a mixture or solution of aluminum silicate or meta-silicate and sodium hydroxide, which forms, in effect, a fluid silicate. While this substance Will flow freely through the cooling coils, under pressure, it nevertheless exerts considerable friction against the walls of the coils and very effectively tears down and emulsies the fungus growths and other .accumulations in the cooling coils. Moreover, it forms or deposits on the insides of the coils a silicate lm which hardens and is very effective in preventing fungus or like. growths in the beer cooling coils. Furthermore, when this alkaline silicate mixture is introduced into the cooling coils it apparently reacts in the mixture of water and substance that accumulate in the coils, since a Very considerable amount of gas is formed during the chemical cleansing operation. Often this gas will form as much as 40 lbs. of pressure in the system, which helps to circulate the chemical cleansing agent therethrough and lightens the load on the pump. It is to permit the escape of this gas, before opening the system after the chemical cleansing operation, that the relief valve 37 is provided.
In cases where the pressure of the water at the source 4l is sufficiently high, the operator may rinse the cooling coils without using the pump l2 and without running the motor 9. This may be accomplished by opening the bypass valve 42, attaching the hose 24 to water source 4l, attaching the drain hose 4D to the faucet 3l and attaching the hose i9 to the faucet 30 whereupon the rinse water will circulate through the system by way of the by-pass 25 and its Valve 42. This effects economy in the use of the apparatus since it permits the operator to cut out'the motor and thereby eliminate the expense'of its current consumption when the municipal Water supply pressure is sufficiently high.
It is a decided advantage to have the combination of elements `forming the apparatus assembled into a portable unit since by this arrangement one operator may service a large number of beer cooling units, each of which is preferably serviced about once each Week.
While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capableof Variation and modification, without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.
Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:
l. A beer coil cleaning unit comprising a portable casing having arranged therein a circulating pump with input and output ports, a tank for cleansing chemicals, a conduit connecting said tank with said input port and providing a support for the tank, a conduit connected with said output port and through valve means with said first-mentioned conduit, the said output conduit having a sight glass connected thereto and supported thereby and the said sight glass having a fitting for coupling to a cleansing line, the said cleansing tank likewise having a coupling for connection with a cleansing line whereby fluid may be circulated by said pump through said tank, said sight glass and said cleansing lines.
2. A portable device for cleansing and washing beer coils and the like comprising a portable casing having arranged therein a pump, a tank for cleansing chemicals, a conduit connecting said tank and pump and forming a support for the tank, a second conduit connected to said pump and to a sight glass, the latter being supported by said connection with said conduit in a position for ready inspection in said casing, and having a iitting including a pressure gauge, and means for coupling said sight glass and conduit with a cleansing line, and said tank having means for coupling with a second cleansing line.
3. A portable beer coil cleansing unit comprising a cabinet, a pump arranged within the cabinet and having input and output ports, a tank having a removable closure and means for coupling said tank with a cleansing line, conduit means connecting said input port in circuit with said output port, valve means for shutting oi the circuit between said ports through said conduit means, said tank being connected to and supported by said conduit means between said valve means and said input port, a sight glass connected to and supported by said conduit means between said Valve means and said output port, said sight glass having a fitting including a pressure gauge and adapted for connection with a second cleansing line and being disposedin a position in said cabinet accessible for ready inspection.
4. A device for cleansing pipe lines and the like, said device comprising a cabinet, a powerdriven pump arranged within said cabinet and having input and output ports, a tank for cleansing chemicals, means on said tank for coupling engagement with a rst cleansing line, a conduit connecting said tank and pump and supporting the tank within the cabinet, a sight glass, a conduit connecting said sight glass with said pump and forming a support for the glass, a fitting connected with said glass and adapted for coupling engagement with a second cleansing line, said first and second cleansing lines being adapted for connection with a pipe line to be cleansed in such manner that uid may be circulated by said pump through said several cleansing lines, said pipe line, said tank and said sight glass.
5. A portable device for cleansing pipe lines and the like, said device comprising a portable cabinet, a pump arranged within said cabinet and having input and output ports, conduit means interconnecting said ports and including valve means for closing oli said interconnection, a tank for cleansing chemicals and having a connection with said conduit means between said input port and said Valve means, said connection also serving to support said tank and the latter having means for coupling engagement with a rst cleansing conduit, a sight glass having a connection with said conduit means between said output port and said valve means, said connection serving to support said sight glass and the latter having a pressure gauge operably supported thereby and connected therewith and having means for coupling engagement with a second cleansing conduit, the said cleansing conduits being adapted for connection with a pipe line to be cleansed whereby cleansing fluid may be circulated through said pipe line, said tank and said sight glass.
GEORGE A. LEWIS.