US 2770242 A
Description (OCR text may contain errors)
53 J. II... TUBIOLO LIQUID DETERGENT DISPENSER Filed Aug. 24, 1953 2 Sheets-Sheet .1
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IN V EN TOR.
United rates Patent LIQUID DETERGENT DISPENSER Justin L. Tubiolo, San Gabriel, Calif.
Application August 24, 1953, Serial No. 376,071
3 Claims. (Cl. 134-48) This invention relates to a liquid detergent dispenser.
The general object of the invention is to provide an improved liquid detergent dispenser which is particu larly adapted for use with dish washing machines.
A more specific object of the invention is to provide a novel liquid detergent dispenser for use with dish washing machines, which have a rinsing station and a wash water station and wherein the supply of fresh water to the rinsing station acts to supply liquid detergent to the water at the wash water station.
Another object of the invention is to provide a novel liquid detergent dispenser including a container and a novel valve member which is pressure actuated.
A further object of the invention is to provide a novel diaphragm operated valve assembly for use in a liquid detergent dispenser.
Other objects and advantages of my invention will be apparent from the following description taken in con nection with the accompanying drawings wherein:
Fig. l is an isometric view with parts in elevation and with parts broken away showing my invention;
Fig. 2 is a fragmentary sectional view showing the apparatus with which my invention is used;
Fig. 3 is a fragmentary central sectional view showing the dispenser;
Fig. 4 is a top plan view showing the dispenser;
Fig. 5 is a section taken on line 55, Fig. 3;
Fig. 6 is a section taken on line 6--6, Fig. 4;
Fig. 7 is an isometric view showing valve member; and
Fig. 8 is an enlarged sectional view showing valve member.
Referring to the drawing by reference characters the invention is shown as embodied in a dish washing machine which is indicated generally at 10. As shown, the dish washing machine includes a receptacle 11 which has an inlet opening 12 and an outlet opening 13 and is provided with an endless conveyor 14 on which dish racks 15 may travel from the washing station 16 to the rinsing station 17 and thence through the outlet 13.
The structure includes a fresh water supply pipe 18 which communicates with a valve 19 which latter is of a conventional type and includes a lever 20 which, while it engages one side of the rack 15 at the rinsing station 17, causes fresh water to flow from the valve 19 to pipes 21 and 22 and to headers 23 and 24, thence to nozzle pipes 25 and 26, to thus direct forceful, fine sprays of fresh water against the dishes 27 in the rack 15, which is at the rinsing station 17.
The rinse water passes through the rack and down an inclined portion 28 of the housing 29 and passes through perforations 30 into a wash water tank 31.
Wash water is drawn from the tank 31 through the inlet 32 of a pump 33 which may be suitably driven and into a wash water supply line 34 whence the wash water passes to headers 35 and 36 and thence to nozzles 37 where it is directed onto the dishes 38 in the rack 15, which is at the wash water station. After passing from the rack the wash water passes through the perforations 30 back into the tank 31.
The supply of water at the rinsing station maintains the wash water in the tank 31 sufficiently fresh for use. Excess water in the tank 31 passes through an overflow pipe 39 and carries with it the grease and food particles which rise to the surface in the tank 31.
As stated above, it is a principal purpose of my invention to provide a highly efficient and. novel means for supplying liquid detergent to the wash water of a dish washing machine such as has just been described. In the embodiment of my invention shown in the accompanying drawings, the liquid detergent supply means or dis penser is indicated generally at 40.
As shown, the dispenser includes an open top container 41 in which a bottle 42 of liquid detergent may have the open end thereof inserted. The tank 41 includes a fitting 43 which includes a union 44 and a conduit 45 which extends through a shut-off valve 46 to a conduit 47 which has an end outlet 48 disposed in the wash water tank 41.
The fitting 43 communicates through a conduit 49 with the upper chamber 50 of a valve assembly indicated generally at 51. The valve assembly 51 includes the upper part 52 in which the cavity 50 is disposed and a lower portion 53 in which a cavity 54 is disposed. The parts 52 and 53 may be secured together in any desired manner, suchas by screws 55 as shown in the drawing.
A diaphragm member 56 which is flexible and which may be made of thin artificial or natural rubber, metal or plastic, is clamped between the portions 52 and 53 to seal oif the chambers 50 and 54 from each other.
The member 52 has an axial hole 57 through which a valve member 58 extends. The valve member has an annular groove 59 which receives a packing member 60 such as an O ring. The packing member is urged against a valve seat 70 and is normally urged to seating position by a spring 71, one end of which engages the member 52 and the other end of which engages a head member 72 which is rigidly connected to the valve member 58 as by threads 73.
A fluid groove 74 is arranged in the valve 58 and the construction is such that when the diaphragm 56 is moved against the tension of the spring 71 the head member 72 will be raised to the position shown in Fig. 3 of the drawing and will open the valve to permit fluid in the container 21 to pass through the groove 74, thence into the conduit 49 to the conduit 47 and the outlet 48 to the wash water tank 31.
-In order to distend the diaphragm 56 the member 53 is provided with a pipe 75 which communicates with the chamber 54 at one end and at the other end the pipe 75 communicates with the header 23 through one of the nozzle pipes 25. The pipe 75 includes a. shut-off valve 76.
From the foregoing description it will be apparent that when the lever 20 is rocked by engagement with the dish rack, fresh water will flow through the header 23, nozzle pipes 25, and through the pipe 75 into the chamber 54 to thus create pressure beneath the diaphragm to raise the diaphragm and valve 57 and allow liquid detergent to flow through the groove 74 into the chamber 50 thence to the conduit 49 to the pipes 45 and 47 and to the discharge outlet 48.
The valves 46 and '76 may be adjusted to control action of the diaphragm 56 and flow through the pipe 47. Also when valves 46 and 76 are fully closed the dispenser tank 41 and associated parts may be readily removed. The pipe 75 includes a fitting 77 similar to the fitting 43 previously mentioned.
Having thus described my invention, 1 claim:
1. In a liquid detergent dispenser for use in a dish washing machine which includes a rinsing station and a 2, 3 wash water station, means to supply fresh Water to dishes at the rinsing station, rack operated valve means to control the flow of fresh Water, a wash water tank disposed to receive water from the rinsing station, and means to pump water from the Wash water tank and to'discharge it upon dishes at the Wash Water station, said detergent dispenser including a liquid detergent container, a normally closed valve, said valve having an inlet communicating with the interior of the container, said valve having an'outlet, a conduit connecting said valve outlet and said wash water tank, said valve controlling flow of liquid determent from said container to said Wash Water tank and means operated by fluid pressure of the fresh Water supply means when the fresh Water valve is open to move the valve in the liquid detergent conduit to open position.
2. A dishwashing machine including a rinsing station, a wash Water station, means to discharge fresh water upon dishes at the rinsing station, a fresh water line adapted to to supply fresh Water to the discharge means at the rinsing station, valve means to control the flow of fresh water through'the fresh water line, a wash Water tank at the wash water station and disposed to receive water from the rinsing station, means to pump water from the wash Water tank and to discharge it upon dishes in the wash water tank, a liquid detergent container, a conduit connecting the detergent container and the Wash Water tank, a valve controlling flow through said conduit and means communicating with the fresh Water line and operated by fluid pressure in the fresh water line when the fresh Water line valve is open to move the valve in the liquid detergent conduit to open position.
' 3. A dishwashing machine including a rinsing station,
a wash Water station, header means to discharge fresh Water upon dishes at the rinsing station, a fresh Water line adapted to supply fresh water to the header means at the rinsing station, valve means to control the flow of fresh water through the fresh Water line, a wash water tank disposed to receive Water from the rinsing station, means to pump water from the wash Water tank and to discharge it upon dishes at the Wash Water station, a liquid detergent container, a valve member in the container, said valve member having a chamber communicating with the header means, said valve member having a second chamber and having an inlet from the container to the second chamber, a valve normally closing passage through the inlet, a diaphragm closing the second chamber and movable by fluid under pressure in the first chamber, means operated by the diaphragm for moving the valve to open position to allow detergent in the container to flow into the second chamber, and conduit means to connect the second chamber With the wash Water tank.
References Cited in the file of this patent UNITED STATES PATENTS 1,512,918 Forsgard Oct. 28, 1924 1,664,637 Merseles Apr. 3, 1928 1,709,325 Runser Apr. 16, 1929 1,923,585 Reeves Aug. 22, 1933 2,228,205 DWyer Jan. 7, 1941 2,266,205 Hunter Dec. 16, 1941 2,333,805 Matheson Nov. 9, 1943 2,459,527 Herbert Jan. 18, 1949 2,574,058 Porter Nov. 6, 1951