Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F21/00—Dissolving
  • B01F21/40—Dissolving characterised by the state of the material being dissolved
  • B01F21/402—Dissolving characterised by the state of the material being dissolved characterised by the configuration, form or shape of the solid material, e.g. in the form of tablets or blocks
  • B01F21/4021—Dissolving characterised by the state of the material being dissolved characterised by the configuration, form or shape of the solid material, e.g. in the form of tablets or blocks in the form of tablets stored in containers, canisters or receptacles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F21/00—Dissolving
  • B01F21/20—Dissolving using flow mixing
  • B01F21/22—Dissolving using flow mixing using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles
  • B01F21/221—Dissolving using flow mixing using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles comprising constructions for blocking or redispersing undissolved solids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/20—Measuring; Control or regulation
  • B01F35/21—Measuring
  • B01F35/211—Measuring of the operational parameters
  • B01F35/2115—Temperature
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/20—Measuring; Control or regulation
  • B01F35/22—Control or regulation
  • B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
  • B01F35/2211—Amount of delivered fluid during a period
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
  • B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
  • B01F35/718051—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings being adjustable

Definitions

• This invention relates generally to the invention of dispensing a solid product with a diluent, and more particularly to a method and apparatus of controlling the dispensing rate when the diluent changes temperature.
• Dispensers that utilize a diluent to erode a product, such as a sanitizer or detergent, are well known.
• the product being dispensed is typically a solid product and can take the form of either a solid block of chemicals, pellets or a cast product.
• a solid block chemical dispenser for cleaning systems.
• the dispenser includes a spray nozzle for directing a uniform dissolving spray on to a surface of a solid block of cleaning composition. The nozzle sprays on the exposed surface of the solid block, dissolving a portion of the block and forming a use solution.
• the present invention addresses the problems associated with the prior art dispensers and provides for a method and apparatus for controlling the dispensing rate of a solid product with changing temperature of a diluent.
• the invention is a dispenser for supplying or spraying a diluent onto a solid to create a use solution.
• the dispenser includes a housing for holding the solid.
• a spray nozzle is used for impinging a diluent on a solid to form a use solution.
• the dispenser has a first incoming diluent passageway in fluid communication with the spray nozzle and a first flow control, positioned in the first incoming diluent passageway, for maintaining a first flow range independent of the diluent's pressure within a pressure range.
• the dispenser also has a second incoming diluent passageway in fluid communication with the use solution and a second flow control, positioned in the second incoming diluent passageway, for maintaining a second flow range independent of the diluent's pressure within the pressure range, wherein the use solution's concentration is maintained over the pressure range.
• the invention is a dispenser for supplying a diluent to a solid and creating a use solution.
• the dispenser includes a housing for holding the solid.
• a spray nozzle is provided for use in impinging the diluent to form the use solution.
• An incoming diluent passageway is operatively connected to the spray nozzle.
• a dispenser outlet passageway having a dispenser outlet, is positioned below the spray nozzle for providing a pathway for the use solution.
• a bypass valve is operatively connected to the diluent passageway.
• the bypass valve having a temperature control valve.
• the temperature control valve has a bypass passageway.
• the bypass passageway is operatively connected to the diluent passageway to the dispenser outlet, wherein additional diluent is added to the use solution, thereby controlling the use solution's concentration.
• the invention is a dispenser for spraying a diluent onto a solid to create a use solution.
• the dispenser includes a housing for holding the solids and a spray nozzle for use in impinging the diluent on a solid to form the use solution.
• An incoming diluent passageway is operatively connected to the spray nozzle.
• a dispenser outlet passageway, having a dispenser outlet, is positioned below the spray nozzle for providing a pathway for the use solution.
• An additional incoming diluent passageway is provided.
• a foam control member includes a chamber and an exit conduit, having an opening in fluid communication with the chamber.
• the exit conduit extending generally downward in the dispenser outlet passageway.
• the foam control member also includes the additional incoming diluent passageway in fluid communication with the chamber, wherein diluent exits from the exit conduit and mixes with the use solution, when both the use solution and the diluent are moving generally downward.
• the invention is a dispenser for spraying a diluent on to a solid to create a use solution.
• the dispenser includes a housing for holding the solid.
• a spray nozzle is used for impinging a diluent on a solid to form a use solution.
• a first incoming diluent passageway is in fluid communication with the spray nozzle.
• a first flow control positioned in the first incoming diluent passageway, is provided for maintaining a flow rate range independent of the diluent's pressure within a pressure range.
• a second incoming diluent passageway is in fluid communication with the use solution.
• a second flow control positioned in the second incoming diluent passageway, is provided for maintaining a second flow rate range independent of the diluent's pressure within the pressure range, wherein the use solution's concentration is maintained over the pressure range.
• a dispenser outlet passageway having a dispenser outlet, is positioned below the spray nozzle for providing a pathway for the use solution.
• a third incoming diluent passageway is in fluid communication with the use solution.
• a third flow control positioned in the third diluent passageway, is provided for maintaining a third flow rate range independent of the diluent pressure within the pressure range.
• a bypass valve is operatively connected to the third incoming diluent passageway, the bypass valve having a temperature control valve. The temperature control valve having a bypass passageway. The bypass passageway operatively connecting the third incoming diluent passageway to the dispenser outlet, wherein additional diluent is added to the use solution, thereby controlling the use solution's concentration.
• the invention is a method of dispensing a use solution by impinging a diluent on a solid.
• the method includes selecting a nozzle on a flow rate of diluent sufficient to dissolve a solid to provide an amount of dissolved solid.
• a dynamic flow control is positioned in an incoming diluent passageway, the first dynamic flow control for maintaining a first flow rate independent of the diluent's pressure within a first pressure range. An additional amount of diluent needed to provide a desired concentration of use solution is determined.
• a second dynamic flow control is positioned in a first supplemental incoming diluent passageway, the second dynamic flow control for maintaining a second flow rate range within a second pressure range, the second flow rate range sufficient to provide the desired concentration of use solution.
• the method includes supplying a diluent, having a temperature, to act on a solid chemical to form a use solution.
• the temperature of the diluent is sensed.
• a bypass valve is activated when the temperature of the diluent reaches a predetermined temperature and allows the mixing of the diluent with the use solution, thereby reducing the use solution's concentration and maintaining the concentration below an upper limit.
• Figure 1 is a front perspective view of a dispenser according to the present invention.
• Figure 2 is a perspective view, shown generally from the rear with the back and bottom removed, of the dispenser shown in Figure 1;
• Figure 3 is an enlarged view of one embodiment of the present invention that is utilized with the dispenser shown in Figure 1;
• Figure 4 is an exploded front elevational view of a portion of the invention shown in Figure 3;
• Figure 5 is a cross sectional view of a portion of Section 3, taken generally along the lines 5—5;
• Figure 6 is an enlarged perspective view, with portions broken away of a portion of the dispenser shown in Figure 2;
• Figure 7 is an exploded perspective view of the manifold shown in Figure 6;
• Figure 8 is a bottom, plan view of the assembled manifold shown in Figure 7;
• Figure 9 is a chart showing flow rates verses pressure for various flow controls used in the invention.
• Figure 10 is a chart showing grams dispensed for a 20-gallon fill utilizing the thermal valve of the present invention;
• Figure 11 is a chart showing the concentration of the use solution under various conditions.
• Figure 12 is a chart showing concentrations of a use solution utilizing different parameters than the chart in Figure 11.
• the dispenser 10 includes a housing 11.
• the housing 11 has two lids 12, 13 operatively connected to the housing 11 by suitable means such as a hinges 13, 14a.
• the housing 11 encircles the dispenser 10. However, as shown in Figure 2, the back and bottom have been removed for clarity.
• the housing 11 has an inner cavity 1 Ia in which two product holders 14, 15 are positioned.
• the product holders 14, 15 are for receiving a suitable solid product such as a detergent, sanitizer or other suitable chemicals from which it is desired to make a use solution.
• Dispenser 10 is shown as having two product holders 14, 15.
• the dispenser 10 has a screen 16 that extends across the cavity lla and is connected to the sides of the housing 11.
• the product holders 14, 15 may be supported by the screen 16.
• the size and mesh opening of the screen 16 are dependent on the chemical to be dispensed and the other factors, well known in the art.
• Operatively positioned below each product holder 14, 15 is a conical member 17.
• the conical member 17 is shown, in Figure 2, positioned below the product holder 15.
• a similar conical member is positioned underneath the product holder 14, but is obscured from view in Figure 2.
• the conical member 17 forms a conical cavity.
• a manifold 18 is operatively connected below the bottom of the conical member 17 by means well known in the art.
• the conical member 17 sits in the cylindrical opening or bore 18a and rests on the shelf 18b.
• the cylindrical opening 18a extends down to the bottom of the manifold 18, as viewed in Figure 6.
• the end of the opening 18a forms the outlet for the use solution.
• the conical member 17 also acts as a collection member for directing the use solution to cylindrical opening 18a of the manifold 18.
• a block member 19 is suitably attached to the manifold 18 by means well known in the art such as a screw 20.
• the block member 19 has three bores 19a, 19b, 19c that extend through the block member 19.
• a passageway 18c is formed in the manifold 18 and is in fluid communication with the bore 19a.
• the passageway 18c has its other end in fluid communication with a nozzle 21.
• An O-ring 23 is positioned between the block member 19 and manifold 18 around the bore 19a to provide for a liquid tight seal.
• a fitment 24, having a first member 24a operatively connected to a second member 24b, is positioned in the bore 19a.
• the fitment 24 is adapted and configured to be connected to a conduit, as will be discussed hereafter.
• An O-ring 25 is positioned at the end of the fitment 24 inside of the bore 19a.
• a second passageway 18d is formed in the manifold 18 and has one end in fluid communication with the bore 19b and the other end opening into the cylindrical opening 18a.
• An O-ring 26 is positioned around the passageway 18d and the bore 19b.
• a third passageway 18e is formed in the manifold 18 and is in fluid communication with the bore 19c.
• the second passageway 18b opens into the cylindrical opening 18a.
• a fitment 29, having a first member 29a and a second member 29b, is positioned on an O-ring 30 in the bore 19c.
• An O-ring 31 is positioned between the manifold 18 and block member 19 proximate the bore 19c and passageway 18e.
• the third passageway 18e opens into the cylindrical opening 18a.
• an insert 32 is positioned in the cylindrical opening 18a.
• Three flow controls are utilized in the three passageways formed in the manifold 18 and block 19.
• a first flow control 70 is positioned in an insert 71 and secured in the first passageway 18c.
• a second flow control 73 is positioned in the second insert 74 and positioned in the second passageway 18d.
• the third flow control 75 is positioned in the second insert 76 which is positioned in turn in the third passageway 18e.
• An O-ring 72 is positioned behind the fitment 71.
• the flow controls 70, 73, 75 are flow controls made of a suitable material such as EPM rubber and are flexible and change in shape with respect to changes in pressure in the diluent.
• the flow controls 70, 73, 75 control flow of the diluent independent of pressure within a reasonable flow range and will have variable orifices 70a, 73a, 75a that change in size dependent on the pressure of the diluent.
• Any suitable flow controls may be utilized, such as those available from Vernay Laboratories, Inc.
• the flow controls are referred to as dynamic flow controls.
• the dynamic flow controls restrict their variable orifices based on pressure, thereby providing a range of flow rates over a range of pressures without the use of electronics to control the flow controls.
• the specific flow controls that are utilized will be dependent upon the gallon per minute flow rate that is desired.
• flow control 70 may be a 0.3 gallon per minute flow control, flow control 73 and 2.0 gallon per minute flow control and the third flow control 75 a 3.5 gallon per minute flow control. This will be discussed more fully hereinafter.
• the insert 32 as shown in Figures 6 and 7, has a first section 32a and a second section 32b.
• the second section 32b has an exit opening 32c at its end.
• the insert 32 is a water dampener and reduces turbulents that contributes to foam generation.
• the first section 32a forms a housing that receives the diluent from passageways 18d, 18e.
• the passageways 18d and 18e may enter from the side, as shown in the figures, or from other directions, such as from the top.
• the first section 32a has a rectangular opening that is sized and configured to fit around the passageways 18d, 18e when the insert 32 is placed inside of the bore 18 a.
• the passageway around the insert 32 is defined by the area between the fins and the wall of the cylindrical opening 18a. In this manner, the insert does not block the flow of the use solution.
• the cylindrical opening 18a provides for the dispenser outlet passageway and has a dispenser outlet at its end, wherein a suitable conduit (not shown) will take the use solution and deliver it to an appropriate end use.
• the first section 32a is enclosed and therefore the diluent from passageways 18d, 18e enter into the first section 32a through the rectangular opening 32d and exits through an opening 32e that is in fluid communication with the second section 32b.
• the second section 32b includes a first conical section 32f operatively connected to a tubular section 32g which is an exit conduit.
• Three fins 32h extend radially outward from the first section 32a. The fins 32h form a friction fit with the bore 18a and hold the insert 32 in position.
• the fins provide for a passageway for the use solution that enters the top of the cylindrical opening 18 a.
• the use solution is able to go around the outside of the insert 32. Referring to Figure 8, the top portion of the insert 32 has been removed for clarity when preparing this Figure, so that the nozzle 21 is visible.
• the dispenser 10 has a main diluent inlet 33 that has an opening 33a that is adapted and configured to receive an inlet line (not shown) that carries the diluent, typically water.
• a handle 34 is used as a shut-off valve to open and close the inlet opening 33a.
• the main inlet 33 has two exits 33b, only one of which is shown in Figure 2.
• a schematic of the flow is shown in Figure 3. However, in the figures, for clarity, the conduit or tubing has been replaced with lines having arrows. In Figure 3, sections of the tubing or conduit is shown as illustrative of what the conduit may look like. However, the insertion of the conduit into Figure 2 would obscure several parts from view and accordingly has been replaced by the lines with arrows.
• the exit 33b that is shown is in fluid communication, by suitable means such as a conduit 35 to and inlet 36a of a vacuum breaker 36.
• the other exit of the inlet 33c is in fluid communication by suitable means such as a conduit 37 to an inlet 38a of a second vacuum breaker 38.
• the first vacuum breaker 36 has an outlet 36b that is in fluid communication with a manifold 39 by suitable means such as a conduit 40.
• the manifold 39 may take on any number of different forms, well known in the art.
• the manifold 39 is for taking a single flow of diluent and dividing it into two or more streams of diluent.
• the entrance opening 39a of the manifold 39 is in fluid communication with three outlets 39a, 39b, 39c.
• Outlet 39a is in fluid communication with a thermal valve 41 as will be described more fully hereafter.
• the outlet 39a is in fluid communication by suitable means such as a conduit 42.
• Outlet 39b is in fluid communication with bore 19a by suitable means such as a conduit 43 and outlet 39c is in fluid communication with the thermal valve 41 by suitable means such as a conduit 44.
• a thermal valve assembly 41 includes a typical valve 45 that has an inlet 45a and an outlet 45b.
• a passageway 46 places the inlet 45a in fluid communication with the outlet 45b.
• a spring 47 is positioned inside of bore 48. The spring 47 has one end against the valve 45 and another end against a cap 49.
• a rubber gasket 50 has a central opening and is positioned around the exit 51 of the spool 52.
• a rod 53 is positioned through the spool 52 and goes into the cap 49. A viewed in Figures 4 and 5, movement to the left by the rod 53 will cause the cap 49 to move off of the exit 51 and allowing water to pass from the inlet 45a to the outlet 45b.
• any suitable valve 45 may be utilized with the thermal valve assembly 41.
• the spool 52 is operatively connected to the valve 45 by screw threads 52a and has an O-ring 54 positioned between the valve 45 and the spool 52.
• a cylindrical housing 55 has a first end 55a that is threaded and is adapted and configured to be operatively connected to the valve 45 by threading on to mating grooves in the spool 52.
• the end 55 has an aperture through which the rod 53 is positioned.
• the cylindrical housing 55 has a cavity 55b in which a thermal motor 56 is positioned.
• the cavity 55a has a distal end 55c that is sized and configured to support a first end 56a of the thermal motor 56.
• the cylindrical housing has an inlet opening 55d and an outlet opening 55e to allow water to pass therethrough.
• the thermal motor 56 may be any suitable thermal sensitive member that expands or changes in length as its temperature changes.
• One suitable example is Model No. MMV by Watts Regulator Company, Laurence, Massachusetts.
• the cap 57 includes a generally cylindrical member 57a operatively connected to a disc member 57b.
• the cylindrical member 57a is sized and configured to fit inside of the cavity 55a.
• An 0-ring 58 is positioned between the cylindrical housing 55 and the cap 57 to provide a water-tight seal.
• the cap 57 is secured to the housing 55 by suitable means such as screws 59.
• An adjustment element 60 is operatively connected to the cap 57.
• the element 60 has a cylindrical body that is adapted and configured to fit inside of the cylindrical member 57a of the cap 57.
• the adjustment element 60 has a cylindrical element 60a that has a threaded section 60b that matches with corresponding grooves formed in the cap 57.
• the cylindrical member 60a is sealed against the cap 57 by an O-ring 61.
• the cylindrical member 60a is sized and configured to receive the thermal motor 56.
• a ball bearing or similar device 61 is positioned in the inner cavity 60b of the cylindrical member 60a.
• the adjustment element 60 has an end 60b that is secured to a knob 62 by suitable means such as a screw 63. It can therefore be seen that as a knob 62 is rotated, the adjustment element 60 will move in and out of the cap 57 thereby moving the thermal motor 56 closer to or further away from the end of the rod 53 and thereby changing the temperature at which the rod 53 will open the valve 45. It is also understood that another way of adjusting the valve assembly 41 is to change the length of rod 53.
• An adapter 80 is secured to the bottom of the manifold 18.
• the adapter 80 has a central bore that is in alignment with the cylindrical opening 18a and provides for a mechanism to collect the use solution and guide it into a suitable conduit (not shown) that is connected on. the end of the adapter 80.
• the conduit that would be connected to the adapter 80 would remove not only the use solution, but also the diluent exiting the insert 32.
• the product in the holder 14 does not utilize a thermal valve assembly and therefore has a slightly different construction with respect to the flow of the diluent or water.
• the water flows from the outlet 38b of the second vacuum breaker 38 to a manifold 65.
• the manifold 65 is similar in construction to the manifold 39.
• the manifold 65 is in fluid communication with the outlet 38b of the second vacuum breaker by suitable means such as a conduit 64.
• the manifold 65 has an inlet 65a that is in fluid communication with three outlets 65a, 65b, 65c.
• the third outlet port 65c is plugged, with a suitable plug (not shown).
• the dispenser 10 delivers use solutions from solids through the use of flow controls for the diluent.
• the diluent is split into either two or three streams depending on whether or not the product being dispensed is temperature sensitive for erosion.
• the handle 34 is rotated thereby allowing diluent to pass through the main inlet 33.
• the present invention can be utilized with one or more different products, two of which are shown in the drawings. Further, it is understood that the present invention may be utilized with or without the temperature control feature of the thermal valve assembly 41.
• the product being dispensed from holder 15 will be described with respect to use of the thermal valve 41 and the product to be dispensed from product holder 14 will be described with respect to not using the thermal valve 41.
• the water flowing into the main inlet 33 will be diverted to both the first vacuum breaker 36 and second vacuum breaker 38, although it is understood that only one may be utilized with the present invention.
• the water passes to the first manifold 39a through the inlet 39a and exits the three outlets 39a, 39b, 39c.
• the water exiting outlet 39b passes through the second manifold through bore 19a and passageway 18c. There, the water will exit the nozzle 21 and form an appropriate spray pattern and erode the product (not shown) held in the product holder 15 and a use solution will be formed.
• the use solution will fall down into the conical member 17 and enter the cylindrical opening 18a in the manifold 18.
• the use solution will pass around the insert 32 in the channels created by the fins and exit the outlet of the cylindrical opening 18a between the adapter 80 and the second section 32b of the insert 32.
• the diluent exiting outlet 39a will enter the thermal valve 41 and pass through the opening 55d and out of the opening 55e into the bore 19b. It will then exit the second passageway 18d and empty into the first section 32a of the insert 32.
• the diluent exiting the outlet 39c will pass, via conduit 44, to the inlet 45a of the valve 45. However, if the temperature of the diluent is below a predetermined value, the valve 45 will be closed. The predetermined value will change dependent on the product and concentration needed.
• the thermal motor 56 is exposed to the diluent as it is passing through the openings 55d, 55e. As the temperature increases, the thermal motor 56 expands in size and opens the valve 45, thereby allowing more water to enter into the first section 32a of the insert 32 through the bore 19c and third passageway 18e. This additional diluent reduces the concentration of the use solution that would increase as the temperature increases.
• the flow controls 70, 73, 75 are seated dynamic flow control devices that control the flow of the water, as will be described more fully hereafter, to provide for a controlled reasonable flow range of the diluent.
• the diluent that enters the insert 32 does not mix immediately with the use solution.
• the use solution, as it is passing outside the insert 32, is generally in a downward direction.
• the diluent in the insert 32 will be redirected so that it is not at an angle to the use solution, but will again be flowing generally downward and parallel to the use solution. Therefore, when the use solution mixes with the diluent from the insert 32, the diluent and use solution are moving generally in the same direction, thereby minimizing shear forces and thereby reducing foam.
• the product to be dispensed from product holder 14 does not erode at substantially different rates, dependent upon the temperature of the diluent. Accordingly, it is not necessary that a thermal valve 41 is utilized.
• the flow control members 70, 73 are utilized to again control the volume of diluent as will be described more fully hereafter. Again, the diluent through the second passageway 18d enters the insert 32 to reduce foaming.
• the present invention is able to provide a dispenser that is able to provide a use solution at a desired concentration without the use of electronics or controls.
• the use of the dynamic flow control in the passageway provides for flow, within a range, independent of pressure within the system over a reasonable flow range such as from 30-100 psi.
• Figure 9 is a chart of the range of the flow rate in gallons per minute verses pressure in pounds per square inch of a dispenser that utilizes a .33 gallon per minute flow control and a 3.0 gallon per minute flow control with a .28 nozzle.
• the bottom line shows that the dispensing rate of the .33 flow control is relatively constant over the measured range of from 15 to 90 psi.
• the flow rate of the 3.0 gallon per minute flow control is relatively constant between the pressures of 15 and 90, and especially more consistent within the range of 30 to 90 psi.
• the flow rate is at or above the desired rate. Applicant has also found that this relationship extends to 100 psi, even though not shown in the chart.
• Figure 10 is a chart showing use of the present invention for dispensing quaternary salt from a detergent having 40 percent quaternary salt.
• the chart is representative of a 20-gallon fill.
• the line for "without temperature compensation" indicates a dispenser that does not have the thermal valve of the present invention, wherein the lower line utilizes the thermal valve of the present invention.
• the thermal valve assembly 41 is set to open at 120 degrees. Therefore, since the thermal valve would open at 120 degrees, additional water would be dispensed, thereby decreasing the time to dispense 20 gallons and thereby deleting the total number of grams of product dispensed for a 20- gallon fill.
• Figure 11 utilizes a dispenser that has a flow control 70 of 0.33 gallons per minute, a flow control 73 of 3.5 gallons per minute and a flow control 75 of 2.0 gallons per minute.
• the nozzle 21 is rated at 0.28 gallons per minute. This is also for a quaternary salt where a desired concentration is between 150- 300 parts per million.
• the thermal valve 41 is set to open at 120 degrees. It can be seen that there are certain areas that are not in the desired range of 150-300 parts per million as represented by the lightest shade and the darkest shade.
• the present invention it is then able to be adjusted by simply changing one or more of the variables. For instance, it would be possible to increase the flow rate through the thermal bypass 41, thereby bringing down the concentration at the higher temperatures. Alternately, the amount of product being dissolved may be controlled by reducing the flow through the nozzle 21.
• Figure 12 represents a dispenser, similar to Figure 11, expect flow control 70 was lowered to a 0.3 gallons per minute. Then, the parts per million reading are represented by the numbers in the chart. It can be seen that all of the numbers are within the desired range of 150-300 parts per million throughout the range of 30-100 psi and a temperature range of from 90-140 degrees. It is recognized that two of the readings are at 310, slightly out of the desired range.
• a nozzle 21 is selected that provides for an appropriate spray on the area of the product being dispensed.
• the spray pattern should typically cover the entire block.
• the flow control 70 for the nozzle 21 is typically sized slightly larger then that of the capacity of the nozzle. For instance, if a 0.28 flow rate nozzle is desired, a 0.30 or 0.33 flow control is provided.
• the nozzles are typically rated at the flow rate at 10 psi.
• the pressure will effect the force on which the water is impinged on the product and the flow rate will determine the amount of product dissolved.
• One can easily measure the amount of product that is dissolved over a targeted time. Then, it is simply necessary to supply an additional amount of diluent through the flow control 73 to provide the desired concentration.
• the thermal valve 41 may be utilized and flow is provided through the flow control 75.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
• Nozzles (AREA)
• Loading And Unloading Of Fuel Tanks Or Ships (AREA)
• Accessories For Mixers (AREA)
• Control Of Temperature (AREA)
• Devices For Dispensing Beverages (AREA)
• Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
• Polysaccharides And Polysaccharide Derivatives (AREA)
• Centrifugal Separators (AREA)
• Extrusion Moulding Of Plastics Or The Like (AREA)

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• 2005
  • 2005-10-14 DE DE602005027271T patent/DE602005027271D1/de active Active
  • 2005-10-14 DE DE602005009571T patent/DE602005009571D1/de active Active
  • 2005-10-14 PL PL10160228T patent/PL2216089T3/pl unknown
  • 2005-10-14 PL PL08013057T patent/PL1980315T3/pl unknown
  • 2005-10-14 EP EP10160228A patent/EP2216089B1/de active Active
  • 2005-10-14 EP EP05808958A patent/EP1814649B1/de active Active
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  • 2005-10-14 JP JP2007536947A patent/JP5426096B2/ja active Active
  • 2005-10-14 EP EP08013057A patent/EP1980315B1/de active Active
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