Patent Description:
The document <CIT> discloses an apparatus for cleaning a soft serve machine, the apparatus comprising a manifold assembly configured to engage a soft serve machine and a pressurized solution input in the manifold assembly to receive a solution to pass along a portion of a food flow path of the soft serve machine in a reverse direction, and a method of using this apparatus.

It is generally understood that fluid dispensing systems having fluid lines that carry fluids to a point of use need cleaning from time to time in order to ensure that no deposits or microorganisms collect in the fluid lines. For example, beverage distribution systems employ the use of beverage lines to carry beverages from beverage containers, or tanks, to dispensing units, which dispense the beverages to drinking containers. If for some reason, these beverage lines are not cleaned on a regular basis, the collection of bacteria and deposits therein may contaminate the beverages thereby making the beverages unsafe to drink. Moreover, in commercial restaurant settings, food and health regulations actually require the periodic cleaning of beverage dispensing systems.

Similarly, food processors having a food flow path require periodic rinsing, cleaning and/or sanitizing.

It is well known to use portable chemical dispenser systems to clean out beverage lines and other components of beverage dispensing systems. With these portable systems, users have become quite effective in meeting the various requirements imposed by food and health regulations. However, these prior art methods are extremely time consuming and require the attention of at least one person to manually move the chemical dispense systems between each of the various beverage lines that require cleaning in a particular beverage dispense system. To add to the frustration, more and more restaurants are offering a larger variety of beverages than offered in years past, thereby making an extremely time demanding process even more demanding.

Therefore, a need exists for a system for selectively rinsing, cleaning and/or sanitizing a food flow path in a food processor with reduced operator input and time, while providing enhanced reporting and monitoring.

In accordance with the invention, an apparatus according to claim <NUM>, and a method according to claim <NUM> are provided.

Further disclosed is a method including the steps of engaging a manifold assembly with a food processor having a food flow path with a forward flow direction for processing a food product from an upstream end to a downstream dispensing port; and passing a pressurized cleaning solution from the engaged manifold assembly through the dispensing port to pass the cleaning solution along a portion of the food flow path in a reverse flow direction from the dispensing port toward the upstream end.

It is further contemplated locating a dispensing valve in the food flow path controlling flow of the food product in the forward direction passing through the dispensing port, the dispensing valve moveable between an open position and a closed position, and the manifold assembly including distribution manifold having a wash barrel sized to be received within the food processor and move the dispensing valve to the open position. It is understood the dispensing port is an extrusion die. The steps can also include locating a bypass line at a forward flow outlet of a hopper to pass the cleaning solution along the food flow path in the reverse direction without contacting food product in the hopper.

A further step can include locating a pressure cover having a drain port to cover a hopper and sufficiently seal the hopper so that pressure of the cleaning solution entering the hopper is sufficient to force material through the drain port in the cover.

The cleaning solution can be formed to include at least one of lactic acid, acetic acid, caprylic acid an levulinic acid and at least one of sodium dodecyl sulfate and sodium lauryl sulfate. A cleaning agent can be manually introduced into the manifold assembly.

The discharge port can be constructed as a pinch off valve having an open position and a closed position.

A further method of cleaning a food processor having a forward flow direction for processing a food product along a food flow path terminating at a dispensing port, the food flow path including an enclosed length, is provided through the steps of passing a cleaning solution in a reverse direction along at least a portion of the enclosed length of the food flow path. The cleaning solution can be formed to include at least one of citric, lactic, malic, acetic, adipic, fumaric, glutaric, tartaric, fumaric, succinic, propionic, aconitic, sorbic, gluconic, ascorbic, and/or humic acids and at least one of sodium dodecyl sulfate and sodium lauryl sulfate.

The method can include passing the cleaning solution in a reverse direction through the dispensing port to one of an inlet or hopper in the food flow path, the one of the inlet or hopper being upstream of the dispensing port with respect to the forward flow direction.

Further, the method can also include passing the cleaning solution through a bypass line in the one of the inlet or hopper to isolate food product in the hopper from the cleaning solution. The steps can include moving a dispensing valve of the food processor to an open position and passing the cleaning solution through the open dispensing valve prior to entering the enclosed length. It is also understood the method can include passing the cleaning solution through an aperture in a bushing to expose an upstream side and a downstream side of the bushing to the cleaning solution.

The cleaning solution can be passed through a plurality of apertures in a beater blade within the enclosed length. Thus, the cleaning solution contacts a sealing surface in the food flow path, and the sealing surface includes PTFE.

The cycling the cleaning solution and a rinse in the reverse direction along the portion of the enclosed length can be automatically regulated.

The steps can include providing an aperture in the beater blade in the food flow path for food product having at least an <NUM>% fat content or added particulates.

An apparatus is disclosed for cleaning a food processor having a forward flow direction along a food flow path for processing a food product, the food flow path including an enclosed length and terminating at a dispensing port, the apparatus having a manifold assembly engaging the food processor, the manifold assembly including an induction port, a solution input and an outlet configured to fluidly engage the dispensing port; and a control valve operably coupled to the manifold assembly to selectively pass a cleaning solution through the outlet and into the food flow path in the reverse direction.

The apparatus can include a drain line fluidly connected to the flood flow path at a location upstream of the dispensing port relative to the forward flow direction. The apparatus can also include a bypass tube fluidly connecting to the food flow path at a location upstream of the dispensing port relative to the forward flow direction, the bypass tube isolating food product in a portion of the food flow path from the cleaning solution.

A wand assembly can be included wherein the wand assembly has a wand manifold, the wand manifold including a venturi, the wand manifold connected to the manifold assembly. In one configuration, a wash barrel is connected to the manifold assembly, the wash barrel sized to engage and seal the dispensing port of the food processor and permit flow into the food flow path in a reverse direction.

A further apparatus is provided for cleaning a food processor having a forward flow direction along a food flow path for processing food, the food flow path including an enclosed length and terminating at a dispensing port, the apparatus includes an intake manifold having a first inlet port and a first outlet port, a control valve intermediate the first inlet port and the first outlet port, a controller connected to the control valve for regulating flow through the control valve from the first inlet port to the first outlet port and a distribution manifold having a first input port and a fluidly connected first outlet port, the distribution manifold having an induction port fluidly intermediate the first input port and the first output port.

In one configuration, the distribution manifold includes a venturi intermediate the first input port and the first output port and the induction port is coupled to the venturi. The distribution manifold can include a check valve intermediate the first input port and the first output port.

A manifold is also disclosed, the manifold having an intake manifold having a first inlet port and a first outlet port, a control valve intermediate the first inlet port and the first outlet port, and a distribution manifold having a first input port and a fluidly connected first outlet port, the first input port fluidly connected to the first outlet port and the distribution manifold having an induction port fluidly intermediate the first input port and the first output port.

The distribution manifold can include a venturi intermediate the first input port and the first output port and the induction port is coupled to the venturi. Also, a controller assembly can be provided and configured to releasably engage a food processor. In one configuration, a wash barrel can be connected to the distribution manifold, the wash barrel selected to engage a dispensing valve of a food processor. A wand assembly fluidly can be connected to the distribution manifold. Further, a check valve can be fluidly connected to the induction port.

A further method includes passing a regulated flow of a solution through a manifold assembly into a downstream portion of a food flow path of a food processor, the downstream portion of the food flow path being downstream of an upstream portion of the food flow path for flow in a forward direction of processing along the food flow path and exiting the regulated flow from the food flow path at an upstream portion of the food flow path.

Yet another method includes controlling a flow of solution through a manifold assembly, introducing an additive through an induction port in the manifold assembly to form a mixture and passing the mixture from the manifold assembly to pass along at least a portion of a food flow path of a food processor in a direction counter to a processing direction along the food flow path.

Referring to <FIG>, a representative food processor <NUM> is shown. The food processor <NUM> can be any of a variety of configurations including, but not limited to, frozen or chilled food product including but not limited to, beverages such as sodas, beer or wine.

Referring to <FIG> and <FIG>, in one configuration, the food processor <NUM> includes a food flow path <NUM> extending from an input or upstream end <NUM>, such as a reservoir, feed tube or line inlets or hopper <NUM> to an output or downstream end <NUM>, such as a dispensing interface <NUM> from which the food product exits the food processor. The food product passes, in a normal or forward direction along the food flow path <NUM>, from the input end <NUM> to the output end <NUM>. In certain configurations, the dispensing interface <NUM> includes at least one dispensing valve <NUM> for selectively passing or allowing passage of the processed food product from the food processor <NUM>. In certain configurations, the dispensing interface <NUM> includes a plurality of dispensing valves <NUM>, such as but not limited to one, two, three or more.

The food processor <NUM> can include any variety of devices, including but not limited to soft serve machines, batch freezers, slush freezers, shake freezers, blended ice machines or food processors for extruding food products which include flows, grains or meats as well as liquid dispensers for beverages including soft drinks, diary drinks or alcoholic beverages such as fermented or distilled spirits. Thus, the food product can be any corresponding product that may be temperature controlled, mixed, blended, altered, processed or extruded.

In certain configurations as seen in <FIG> and <FIG>, the food flow path <NUM> incorporates a number of processing stations <NUM> intermediate the upstream end <NUM> (such as the hopper) and the downstream end <NUM>, (such as the dispensing valve <NUM>). For example, the processing stations <NUM> can include mixing chambers and temperature control chambers along the food flow path <NUM>. The mixing chambers include chambers for mixing ingredients provided in a stream as well as ingredients from different inputs such that the mixing chamber is the volume of initial combination of different ingredients.

In further configurations, processing chambers <NUM>, such as the mixing chamber and/or temperature control chamber of <FIG> can include a blade or beater assembly <NUM> for agitation of the food product within the chamber, such as by rotation within the chamber.

Alternatively, the food flow path <NUM> can function primarily as a conduit from the input end <NUM> to the dispensing interface <NUM>. In these configurations it is understood the food processor <NUM> can function merely to selectively dispense the food product or can provide an alteration or conditioning of the food product such as temperature change, carbonation as well as mixing (compounding). Examples of the food processor <NUM> having these food flow paths <NUM> include dispensing devices such as automated soda dispensers, beer and wine dispensers.

It is further understood the food flow path <NUM> can include a plurality of inputs <NUM> with a corresponding smaller or a greater number of outputs <NUM> depending on the intending operating function of the food processor <NUM>.

A representative food flow path <NUM> through the food processor, with the reverse direction indicated by arrows, is shown in <FIG>.

While the input or upstream end <NUM> of the food flow path <NUM> is shown in <FIG>, above the output or downstream end, it is understood the input can be located below the output, wherein the food product is pumped up from a supply, hopper or reservoir and along the food flow path to exit at the dispensing interface <NUM>.

The present clean in place (CIP) system <NUM> cooperates with the food processor <NUM> to selectively pass a solution or a rinse through at least a portion of the food flow path <NUM> intermediate the downstream end <NUM> and the upstream end <NUM>, wherein the introduced solution or rinse travels counter current or reverse to the forward, or normal, direction through the food flow path.

The term solution is intended to encompass a cleaning, rinsing, disinfecting or sterilizing solution, as well as combinations or mixtures. For purposes of description, the present system is set forth in terms of using the solution, however it is understood the term solution encompasses water (or other liquid) such as a rinse that may be employed. The term solution also includes a gas or vapor such as steam as well as other disinfecting gas. It is understood, the present system <NUM> can employ any of a variety of cleaning (and/or disinfecting) materials including liquids, gases and combinations thereof. The solution can be at least partly formed by an addition of an acidic or basic wash concentrate to public utility water. Exemplary acidic washes for the solution include citric, lactic, malic, acetic, adipic, fumaric, glutaric, tartaric, fumaric, succinic, propionic, aconitic, sorbic, gluconic, ascorbic, and/or humic acids and at least one of sodium dodecyl sulfate and sodium lauryl sulfate.

In one configuration, the solution is presented to the system <NUM> at or within a given pressure range. However, it is understood the solution can be drawn from a reservoir or supply, wherein a pump (not shown) can be used to pressurize the solution for presentation to the system <NUM>. The solution, or select constituents of the solution are a motive fluid for use in the system.

Referring to <FIG>, <FIG>, and <FIG>, the CIP system <NUM> includes a controller assembly <NUM> and a manifold assembly <NUM>, wherein the manifold assembly includes an intake manifold <NUM> and a distribution manifold <NUM> (<FIG>). The manifold assembly <NUM> can further include mounting hardware, such as arms <NUM>.

The CIP system <NUM> can assume a variety of configurations. In one example, the CIP system is (i) referring to <FIG>, a standalone system wherein the controller assembly <NUM> and the manifold assembly <NUM> are a single unit that is a separate construction from the food processor <NUM> and releasably engages the food processor, (ii) referring to <FIG>, an integral system, wherein the controller assembly and the manifold assembly are substantially incorporated within or integral with the food processor (either as an after-market or original equipment manufacturer) or (iii) referring to <FIG>, a hybrid system, wherein certain portions are integral with or embedded in the food processor and certain portions are separate or interchangeable - such as the distribution manifold <NUM> being integral (or coupled to) with the food processor <NUM> and the intake manifold <NUM> along with controller assembly being separate (interchangeable).

Referring to <FIG>, in the integral configuration, the system <NUM> is effectively an internal mechanism to the food processor <NUM>. By embedding the system <NUM> into the food processor <NUM>, the system becomes a component of the food processor. The integral configuration eliminates the need of an operator to engage the system <NUM> with the food processor <NUM> every time cleaning is to be performed. The integral configuration also simplifies the interface of the manifold assembly <NUM> and the food processor <NUM>. By combining the system <NUM> into the food processor <NUM>, a door assembly <NUM> of the food processor can incorporate the manifold assembly to the food processor itself, only requiring an external, or internal liquid and/or gas supply to perform the desired cleaning process.

In the hybrid modular configuration, interchangeability is provided between different designs of the food processor <NUM>. That is, as seen in <FIG>, the intake manifold <NUM> and the controller assembly <NUM> are separated from the distribution manifold <NUM>, yet operably connected by tubing or piping (umbilical) allowing for functionality as set forth below. The hybrid configuration allows for quick change out of the distribution manifold <NUM>, while retaining standard controller assembly <NUM> (and intake manifold <NUM>) configurations across multiple platforms. The controller assembly <NUM> can be mounted separately from the food processor <NUM> to provide even greater design flexibility, and reduction of overall weight of the combined system.

Referring to <FIG>, the controller assembly <NUM> includes control circuitry <NUM>, a user interface and a control valve <NUM> (<FIG>), wherein at least some of the components are retained in a housing <NUM> and the control valve operates in the intake manifold <NUM>. In one configuration, the housing <NUM> is water or splash resistant and in certain configurations water or splash proof (for intended operating parameters). In certain configurations, the controller assembly <NUM> also includes a power supply <NUM> and a communications module <NUM>, as seen in <FIG>.

As seen in <FIG>, the intake manifold <NUM> includes an inlet port <NUM> for receiving a pressurized source of solution, such as publically available water, into the system <NUM> and a plurality of outlet ports <NUM>, wherein the outlet ports are fluidly connected to the distribution manifold <NUM>. As seen in the configuration in the accompanying Figures, the intake manifold <NUM> includes a single inlet port <NUM> and two outlet ports <NUM>. However, it is understood the intake manifold <NUM> can include a plurality of inlet ports <NUM> and a plurality of outlet ports <NUM> or a plurality of inlet ports and a single outlet port.

Referring to <FIG>, at least one control valve <NUM> is located fluidly intermediate the inlet port <NUM> and the outlet ports <NUM>. In one configuration, the intake manifold <NUM> includes a single inlet port <NUM> and two outlet ports <NUM>, wherein the control valve <NUM> regulates which outlet port is fluidly connected to the inlet port. In a further configuration, as seen in <FIG>, the controller assembly <NUM> includes a first 90a and a second control valve 90b, wherein flow to each outlet port <NUM> is regulated by a corresponding control valve.

The control valves <NUM> are configured to selectively pass water (solution) from the inlet port <NUM> through one or a plurality of the outlet ports <NUM>. That is, the control valves <NUM> are moveable to provide a flow (including partial or full flow) and no-flow status.

The control circuitry <NUM> of the controller assembly <NUM> is operably connected to the control valves <NUM>, the user interface <NUM> and the power supply <NUM> to provide for control of the passage of the pressurized water from a given inlet port <NUM> to a given outlet port or ports <NUM> of the intake manifold <NUM>.

Referring to <FIG>, the control circuitry <NUM> can include timing circuits <NUM> as well as counter circuits <NUM> for controlling the passage of material from the controller assembly <NUM>, and hence the CIP system <NUM>. It is understood the control circuitry <NUM> can incorporate the functionality of commercially available sprinkler systems.

The control circuitry <NUM> can be provided in a dedicated processor or programmed into a processor <NUM>, such as a PCB microprocessor or controller.

As shown in <FIG>, the control circuitry <NUM> can also include a communication module <NUM> which can include readers <NUM> such as contact or contactless readers for communicating with RFID or RFID type tags for data storage/identification/controller manipulation. It is also contemplated the control circuitry <NUM> can include memory <NUM>, such as but not limited to nonvolatile memory (NVM), wherein the readers allow for receiving internal software NVM/firmware updates.

The communication module <NUM> and/or control circuitry <NUM> can include, but is not limited to, capability of bluetooth or Wi-Fi type communication protocol. Thus, the communication module <NUM> is capable of sending and receiving data for control specific functions pertaining to the performance of the system <NUM> and/or data transfer to an external device capable of receiving and storing information externally for later manipulation. The communication module <NUM> can also be configured to communicate/control extensions of the system <NUM> that are not physically attached to the housing <NUM>, such as controlling an external valve(s) that also redirects liquid and/ or gas based agents such as for introduction through the manifold assembly <NUM>.

The communication module <NUM> can include the reader <NUM>, such as a wireless, RFID or contactless reader. In one configuration, the agents introduced into the system <NUM> or employed by the system can be accompanied by a tag or card, such as an RFID tag that can be read by the communication module <NUM>. The control circuitry <NUM> can then identify and verify the additive to ensure compliance with cleaning procedures. Thus, the system <NUM> can be programmed to operate only with material from an original equipment manufacturer.

The communication module <NUM> can be incorporated into the control circuitry <NUM> or can be a separate module. The communication module <NUM> provides for communication with an operator to and from the control circuitry <NUM> through any available channel including, but not limited to wireless and wireless networks such as blue tooth, Wi-Fi, cellular, satellite as well as local WI-FI.

The communication module <NUM> can also be configured to communicate directly with the food processor <NUM>. It is known that certain food processors <NUM> include a control system for monitoring and reporting, both for diagnostics and processing. The communication module <NUM> of the CIP system <NUM> can be selected to communicate directly with the food processor <NUM> and thus respond to use cycles and operation parameters of the food processor to provide efficient and timely cleaning of the food processor under an automated cycle without requiring operator intervention. Thus, as the CIP system <NUM> can provide automated cleaning, the controller assembly <NUM> can record operations and thereby provide a record of food processor cleaning.

The wireless communication via the communication module <NUM> and associated apps of the user interface provide an external control of the system <NUM>. Thus, an operator can remotely control the cleaning process. In certain constructions, the user interface <NUM> is sufficiently water resistant to preclude the introduction of liquid into the system <NUM> through the user interface. Thus, an operator can program or use the system <NUM> with damp or wet hands without precluding the intended operation of the system.

The user interface <NUM> can be any of a variety of configurations, including touch screen, button or switch operated or application driven, wherein the application is remotely accessed by an operator. Thus, the user interface <NUM> can include smart phones, tablets and other portable wirelessly communicating devices and associated apps. The user interface <NUM> encompasses an interface capable of receiving physical user inputs such as a TUI (tactile user interface), shown in <FIG>.

The power supply <NUM> can be any of a variety of constructions. In one embodiment, the power supply <NUM> is a battery, which can be either disposable or rechargeable (such as by a power docking station), depending on the intended operating environment of the system. Alternatively, the power supply <NUM> can be drawn from available electrical supply, wherein commercially available converters or transformers are intermediate the available power supply and the control circuitry <NUM>. In a further configuration, the power supply <NUM> can be provided by a wireless interaction such as inductive power transfer, either to directly power or to charge a battery that then powers the system. Alternatively, the power supply <NUM> can be provided by solar energy, hydrogen conversion or scrubbing of available waste energy. Thus, the power supply <NUM> can be dry cell batteries, AC/DC inlet from wall outlet, rechargeable power supplies, either removable or embedded in the housing as well as rechargeable by a cable or wireless charging technology.

As set forth above and shown in <FIG>, the manifold assembly <NUM> includes the intake manifold <NUM> and the distribution manifold <NUM>. Referring to <FIG>, the distribution manifold <NUM> is shown having a number of inputs <NUM> corresponding to the number of outlets <NUM> of the intake manifold <NUM>. In one configuration, as seen in <FIG>, the distribution manifold <NUM> includes a first and a second input 154a, 154b and a plurality of output openings <NUM>. The specific number of inputs <NUM> and outputs <NUM> is dictated by the intended operating environment of the system <NUM>, and is not limited to the illustrated configuration.

The first and second inputs 154a, 154b correspond to and operably align with the outlet ports 114a, 114b of the intake manifold <NUM> for receiving flow from the corresponding first and second outlet ports of the intake manifold.

The output openings <NUM> are in fluid communication with the first and the second inputs 154a, 154b. In one configuration, the number of output openings <NUM> corresponds to the number of dispensing interfaces <NUM>, dispensing valves or processing paths of the food processor <NUM>.

Referring to <FIG>, the manifold assembly <NUM> and specifically the distribution manifold <NUM> also includes an induction port <NUM> for introducing an agent into the solution. The induction port <NUM> is fluidly intermediate the input <NUM> and the output <NUM> of the manifold assembly <NUM> and particularly the input <NUM> and output <NUM> of the distribution manifold <NUM>.

In one configuration, pressurized water is the motive fluid and the induction port <NUM> introduces an additional component or agent to the solution.

The agent is passed through the induction port <NUM> by any of a variety of mechanisms, such as pumping, metering or venturi. In the venturi configuration, the manifold assembly <NUM>, such as the distribution manifold <NUM>, includes a venturi (not shown), wherein the solution or motive fluid passes through the venturi to create a reduced pressure, wherein the reduced pressure is used to introduce the agent through the induction port <NUM>. Alternatively, a pump or metering device can be used independently or in conjunction with the venturi of the manifold assembly <NUM> to introduce the agent into the solution.

As seen in <FIG>, each input <NUM> is fluidly connected to each output <NUM> of the distribution manifold <NUM> (and hence manifold assembly <NUM>) and one induction port <NUM>, such as the venturi, is fluidly intermediate each input and output.

As each flow path between the input <NUM> and the downstream output <NUM> in the distribution manifold <NUM> (or manifold assembly <NUM>) can include one venturi (not limited to one), material or a gas may be drawn into the passing flow. Thus, a plurality of induction ports <NUM> (such as a venturi) can be located along the flow path in the manifold assembly <NUM> between a given input and output. The plurality of induction ports <NUM> provides for the introduction of a plurality of agents to the motive fluid. Specifically, in one configuration, a low pressure port of the venturi is fluidly connected to a supply or source of an agent, wherein the agent can be liquid, solid or gas, such as ambient pressure air. As ambient air is drawn into the venturi and the flow, bubble agitation is formed. The downstream induction port <NUM> (such as the low pressure port of the second venturi between the input and the output) is fluidly connected to a supply or source of the agents, such as cleaning, disinfecting or sterilizing agents, so that the introduced agent is mixed into the aerated flow.

In further configurations, it is contemplated the distribution manifold <NUM> (or manifold assembly <NUM>) can include a single induction port <NUM> fluidly intermediate the input and the output. Alternatively, each flow path in the distribution manifold <NUM> (or manifold assembly <NUM>) between the input and the output can include a corresponding induction port. Thus, different food flow paths can be exposed to different solutions, or processing parameters.

Referring to <FIG>, the distribution manifold <NUM> can include a variety of configurations of input(s) <NUM>, induction port(s) <NUM>, outputs <NUM> and interconnecting flow paths. These configurations can be selected to provide predetermined flows from each of the outputs <NUM> under anticipated operating conditions. Thus, depending on the desired performance, each output <NUM> can provide the same flow rate. That is, the construction of the distribution manifold <NUM> can be tuned to provide the desired flows from the outputs <NUM>.

In a first configuration of <FIG>, the distribution manifold <NUM> includes at least one but may have a plurality of inputs <NUM>. One or more of the inputs <NUM> can include at least one induction port <NUM> to allow the addition of other gas or liquids to the solution. The induction port <NUM> can cooperate with a venturi or an active mechanism such as a pump or meter. Alternatively, agents (gas or liquid) can be passed through the induction port <NUM> by gravity feed, such as by locating a source of the agent above the induction port. Further, an operator can temporarily halt flow, and manually introduce the agent to the system through an access port.

Further, the flow path in the distribution manifold <NUM> can include a return portion <NUM> after (downstream of) the most downstream output <NUM>, wherein the return portion is fluidly connected to the input <NUM> upstream of the most upstream output. The incorporation of the return portion <NUM> as seen in <FIG>, allows each of the outputs <NUM> to have an equal cross sectional area, or diameter for circular outputs, wherein the flow from each output is equal. This eliminates the need to tune the outlet ports <NUM> with different diameters, which would otherwise be required in order to get the same amount of flow from each output.

In a further configuration of <FIG>, the flow path in the distribution manifold <NUM> does not include the return portion <NUM>. To provide for equal flow rate from each output <NUM>, the cross sectional area of each output is formed to accommodate the associated pressure at the particular location in the flow path. Specifically, the outputs <NUM> exposed to higher flow pressures in the distribution manifold <NUM> have a smaller cross sectional area than outputs exposed to lower pressures. Again, the distribution manifold <NUM> can include one or a plurality of inputs <NUM>. One or several inputs <NUM> can include at least one induction port to allow the addition of other liquids and/or gas. Without the return portion in the flow path in the distribution manifold <NUM>, the cross sectional areas of the outputs <NUM>, such as output diameters, is specifically tuned per application in order to make the flow equal between outputs.

In a further configuration of <FIG>, the distribution manifold <NUM> again includes at least one, but may have several inputs <NUM>, wherein at least one of the inputs includes an induction port <NUM> to allow the addition of other liquids and/or gas. In this configuration with inputs <NUM> symmetrically centered between the outputs <NUM>, the cross sectional area of the outputs (output diameters) is specifically sized, tuned, per application in order to make the liquid flow equal between outlet ports.

It is also contemplated an access port or hatch, detachable or refillable reservoir or dispenser, can be provided along with, or in place of the induction port <NUM> for the operator to introduce agents or additives into the flow path.

In another configuration of <FIG>, the distribution manifold <NUM> includes at least one, but may have a plurality of inputs <NUM>. At least one of the inputs <NUM> can include the induction port <NUM> to allow the addition of other liquids and/or gas to the solution. In this configuration with input symmetrically centered with the output <NUM>, no tuning of the output is required.

Alternatively, as seen in <FIG>, the distribution manifold <NUM> includes at least one, but may have several inputs <NUM>, wherein at least one of the inputs includes an induction port <NUM> to allow the addition of other liquids and/or gas. In this configuration having only a single output <NUM>, no tuning of the outlet port is required.

However, it is understood the tuning of the distribution manifold <NUM> may not always be required for the system <NUM> to be operational, and such tuning can be selected to provide enhanced control over the exposure of the food processor <NUM> to the solution. Particularly, if regulation of the flow from each output <NUM> is not critical, the tuning of the distribution manifold <NUM> can be decreased.

In a further configuration, the manifold assembly <NUM> (including at least one of the intake manifold <NUM> and the distribution manifold <NUM>) or an input <NUM> to the manifold assembly can include an ultrasonic generator <NUM> to impart pressure waves in the solution sufficient to create cavitation in the solution. The ultrasonic generator <NUM> can be internal or external to the food processor <NUM> or the system <NUM>, thus introducing cavitation in the solution at any location along the food flow path <NUM>. As known in the art, the ultrasonic generator <NUM> can be piezoelectric or magnetostrictive transducers as well as sonifier or sonicators, wherein the sonication can be direct or indirect. Thus, the solution can be in contact with a probe or can be isolated or separated from the probe. Commercially available sonifier or sonicators can be employed in the system.

In one configuration, each output of the distribution manifold <NUM> includes a wash barrel <NUM>, as shown in <FIG>, sized to be at least partially received within the dispensing interface <NUM> of the food processor <NUM>. The wash barrel <NUM> is configured to physically contact a corresponding dispensing valve <NUM> of the food processor <NUM>, such that upon operable engagement of the manifold assembly <NUM> with the food processor, each wash barrel contacts a corresponding dispensing valve of the food processor and disposes the corresponding dispensing valve in an open (or flow passing) position.

The wash barrel <NUM> includes or defines a flow path extending along a longitudinal dimension of the wash barrel. Depending upon the specific design of the dispensing valve <NUM> in the food processor <NUM>, the wash barrel <NUM> includes a transverse exit port <NUM> for passing liquid from the flow path. The wash barrel <NUM> also includes an engaging surface <NUM> for engaging the dispensing valve <NUM> and moving the dispensing valve to the open position in response to operable engagement of the wash barrel and the dispensing interface <NUM> of the food processor <NUM>. The wash barrel <NUM> also forms a sealed connection with the dispensing interface <NUM> to provide for fluid transfer to the food flow path <NUM>.

In an alternative configuration, dispensing pistons which reside within the dispensing interface <NUM> can be first removed before installing the manifold assembly <NUM> (and the wash barrel(s) <NUM>). Thus, in this configuration while the wash barrels <NUM> do not include the engaging surface <NUM> for engaging the dispensing valves <NUM>, the wash barrel(s) include a sealing surface <NUM> for contacting the food processor <NUM> to create a seal for ensuring passage of the solution into the food flow path <NUM>.

The manifold assembly <NUM> includes an interconnect mechanism <NUM> for operably engaging and retaining the manifold assembly, and any affixed components relative to the food processor <NUM>, and specifically the dispensing interface <NUM>. As shown in <FIG>, a pair of mounting arms <NUM> are rotatably mounted to the manifold assembly <NUM>, wherein the mounting arms can be moved between a release position and an engaged position. In the engaged position, the mounting arms <NUM> operably retain the manifold assembly <NUM> and the attached controller assembly <NUM> relative to the food processor <NUM>. It is understood that in alternative configurations, such as the system having a single wash barrel <NUM>, the system <NUM> could rotate or snap into operable engagement with the food processor <NUM> without requiring independent mounting arms <NUM> or movement of such mounting arms.

For those configurations employing a gas or vapor as the solution, such as steam or disinfecting gas, the control assembly <NUM> and manifold assembly <NUM> are configured to provide sufficient pressurization of the food flow path <NUM>.

In configurations of the food processor <NUM> in which the hoppers <NUM> define the upstream end <NUM> of the food flow path <NUM>, one configuration as shown in <FIG>, the system <NUM> includes a pressure cover <NUM> for substantially sealing the upstream end of hopper-by-pass tube(s) <NUM> and tubing, which extend from the hopper(s) product inlet orifice(s). The pressure cover <NUM> includes a lid <NUM> and seated seal <NUM> for engaging a corresponding surface adjacent a periphery of the hopper <NUM> or engaging the periphery of the hopper. The pressure cover <NUM> also includes a drain port for passing solution that has flowed counter current through the food flow path <NUM>. A drain line(s) is connected to the drain port to direct the passed solution to a catch basin or disposal. The pressure cover <NUM> and the by-pass tube(s) <NUM> sufficiently seal the hopper(s) and inlet orifice(s) so that pressure of the cleaning solution entering the hopper by-pass-tube(s) <NUM> is sufficient to force material into and through the drain port. As seen in the left hopper of <FIG>, an insert hopper, with associated drain line, can be temporarily located within the system hopper. The insert hopper / or hopper sealed cover <NUM> can be located within / or top mounted to the food processor hopper, wherein the insert / or cover hopper is sized to be spaced/ or seal fitted from the food processor hopper so that solution can pass between / or within the hopper(s) and into the insert / or within the hopper itself.

Referring to <FIG>, the by-pass tube(s) <NUM> sufficiently seal hopper(s) outlet orifice(s) <NUM> so that pressure of the cleaning solution entering the hopper by-pass-tube(s) is sufficient to force material into and through the drain port. The bypass tube <NUM> connects to the food processor <NUM> by inserting into the product mix ports <NUM> in the bottom of the hopper <NUM>. The bypass tubes <NUM> can be held in place by either active (mechanical) or non-active (interference fit) engagement. The connected bypass tubing <NUM> dispenses the machine waste into a catch basin or floor drain.

In a further alternative configuration, an insert hopper / or hopper sealed cover <NUM> can be located within / or top mounted to the food processor hopper, wherein the insert / or cover hopper is sized to be spaced/ or seal fitted from the food processor hopper so that solution can pass between / or within the hopper(s) and into the insert / or within the hopper itself.

The bypass assembly of the present system fluidly connects to the food flow path <NUM> in the food processor <NUM> intermediate the upstream end <NUM> and the downstream end <NUM> of the food flow path. The bypass assembly includes the bypass line <NUM> fluidly connected to the food flow path <NUM> intermediate the upstream end <NUM> and the downstream end <NUM> of the flow path. That is, as seen in <FIG>, the bypass line <NUM> connects to the food flow path <NUM> at a location downstream (in the normal or forward direction of product along food flow path in the food processor) and terminates at a point outside of the food flow path. Referring to <FIG>, in one configuration, the bypass line <NUM> fluidly connects to the food flow path <NUM> at the exit of the hopper <NUM> and terminates in a drain or catch basin. Thus, solution introduced into the food flow path <NUM> at the dispensing interface <NUM> and flowing in the reverse direction along the food flow path passes into the bypass line <NUM> without contacting the material in the hopper <NUM> and the solution is guided from the food processor <NUM> through the bypass line without contacting any material in the hopper.

In select configurations shown in <FIG>, the food processor <NUM> includes a bushing or bearing <NUM> for retaining or locating a beater assembly <NUM> as seen in <FIG>. The bushing <NUM> provides a wearable interface between a rotatable beater bar <NUM> and the mandrel or chiller tubes. The present system employs a modified bushing <NUM> having a flow port <NUM> allowing water or solution to flow to both sides (upstream and downstream side) of the bushing. Thus, solution from the manifold assembly <NUM> can migrate between the bushing <NUM> and the surrounding portion of the food processor <NUM> thereby allowing more complete exposure of the food path to the introduced solution. That is, the bushing <NUM> has an internal surface and an external surface, wherein the flow port <NUM> connects the internal surface to the external surface.

In a further configuration shown in <FIG>, the present system modifies the beater blade <NUM> of the food processor <NUM>. Specifically, the present beater blade <NUM> includes a plurality of flow holes <NUM> through the beater blade, wherein the flow holes permit the introduced solution, flowing in the reverse direction along the food flow path <NUM>, to migrate between the beater bar in the beater blade, thereby providing further cleaning. It has been found advantageous to employ the apertures <NUM> in the beater blade <NUM> for food product having a relatively high fat content, such at least <NUM>% as well as <NUM> to <NUM>% or more fat content. For food product having particulate matter, such as seeds or solid food particles (cookies in dairy dessert), the beater blade <NUM> is employed without flow holes. In a further configuration, the beater blade <NUM> is modified to include only one surface contacting member to a beater barrel of the food processor <NUM>. That is, only a single beater blade edge contacts the beater barrel. As seen in the <FIG>, the beater bar supports two beater blades <NUM>, however the modification removes one of the blades so only one edge of one beater blade contacts the barrel.

In a further alternative structure, a sealant is located between the beater bar and the beater blade <NUM> to form a self-conforming configuration of the beater blade and forms a one-to-one seal between the beater bar and the beater blade, thereby reducing migration of product between the beater bar and the beater blade. A commercially available food grade sealant can be used between the beater blade <NUM> and the beater bar. This reduces the amount of fluid used to clean the machine and reduces the cycle time of the system <NUM>. It is understood any combination of these beater blade, beater bar configurations can be employed.

Referring to <FIG>, the present system also optionally self-lubricating O-rings and seals <NUM> in place of traditional food grade grease for sealing. The use of self-lubricating O-rings and seals <NUM> allows for the elimination of a food safe lubrication to place the food processor in an operable status. As the reintroduction of the food grade lubricant is not necessary after cleaning, the present system <NUM> provides for reduced maintenance time. Satisfactory self-lubricating O-rings and seals <NUM> include commercially available plastic or elastomer O-rings and seals impregnated with approximately <NUM>%-<NUM>% polytetrafluoroethylene (PTFE) or bearing, but not limited to a PTFE coating as commercially available. The present O-rings and food contacting sealing surfaces <NUM> include a PTFE (Teflon® coating a registered mark of E. Du Pont De Nemours and Company Corporation) coating or impregnation, thereby removing the need for removal and reapplication of food grade grease.

In operation, the operator mechanically connects the manifold assembly <NUM> to the dispensing interface <NUM> of the food processor <NUM> by engaging the mounting arms <NUM> with the food processor, as shown in <FIG>. The wash barrels <NUM> contact the corresponding dispensing valves <NUM> of the food processor <NUM> and upon operable engagement of the manifold assembly <NUM> to the food processor <NUM>, the wash barrels dispose the dispensing valves to the open position. One induction port <NUM> of the manifold assembly <NUM> is connected to a supply of cleaning, disinfecting or sterilizing solution as depending upon the intended cleaning process, and the remaining induction port may be allowed to aspirate ambient air. The inlet port <NUM> of the intake manifold <NUM> is connected to the public utility water supply or a portable pressurized water supply and thus a positive pressure is placed upon the control valves <NUM>.

The operator then programs the controller assembly <NUM> via the available user interface <NUM> for the desired cleaning (wash) - rinse cycles. For example, the operator can select from one of three options: (i) Rinse only; (ii) Wash only and (iii) Rinse-Wash cycle. Alternatively a second and final rinse cycle can be performed if the operator desires to rinse out the wash solution residual prior to reintroducing the food product mix back into the machine. That is, the controller assembly <NUM> can include a number of predetermined rinse, wash or combination cycles along with preset soak times.

Further, depending upon the intended cleaning with respect to the material in the hopper(s) <NUM> of the food processor <NUM>, the bypass lines <NUM> may be fluidly connected to the ports <NUM> of the hoppers such that introduced solution passes through the bypass tubes <NUM> rather than contacting the hopper and thus does not contact any material within the hoppers, thereby permitting the operator to minimize the waste of food product, while reducing entire cleaning cycle time.

Alternatively, if the hoppers <NUM> are part of the entire food processor cleaning process, the bypass lines <NUM> are placed in the hoppers after the operator cleans the hopper using the wand assembly and/or sanitation wipes. The drain line(s) are connected to the drain port(s).

The controller assembly <NUM> selectively controls the control valves <NUM> corresponding to the input program to pass water or solution through the wash barrel(s) <NUM> and into the open dispensing valve(s) <NUM> of the food processor <NUM>. The introduced water/solution passes countercurrent through the food flow path <NUM> in the food processor <NUM> and the apertures in the bushings <NUM> and beater blades <NUM> (if employed).

The controller assembly <NUM> is also operatively connected to the ultrasonic generator <NUM> for selectively operating the generator to introduce corresponding cavitation in the solution.

Additionally or alternatively, the controller assembly <NUM> can control the optional aspiration of air into the flow via the induction port <NUM> including a first venturi. Thus, the controller assembly <NUM> provides for the selective introduction of bubbles into the counter current flow, wherein the bubbles enhance the cleaning action of the rinse. It is believed the bubbles increase turbulence and kinetic energy in the passing flow, thereby enhancing the cleaning action.

The cleaning solution ultimately passes into the bypass tubes <NUM> and may be captured or disposed of down the available drain. Alternatively, if the bypass lines <NUM> are not employed, the solution passes from the drain port <NUM> in the pressure cover <NUM> for disposal.

Upon completing the programmed cycles, the present system <NUM> automatically terminates the flow of solutions - rinses through the food processor. The present system <NUM> can be then disconnected from the dispensing interface <NUM> of the food processor <NUM> and the bypass tubes <NUM> removed from the hopper(s) <NUM> (or the pressure cover <NUM> removed) thereby allowing for normal operation of the food processor, subsequent to the present clean in place.

In a further configuration, the wand assembly <NUM> can be selected to accommodate two different and selectable flow rates. The wand <NUM> and venturi <NUM> are selected such that (i) a first flow rate which does not draw in the additive (agent) - thereby providing an additive free rinse and (ii) a second flow rate which draws the solution into the passing flow. The flow rates can be provided by operating positions of the wand <NUM>, such as a position of the tip or an orientation of the tip or mechanical flow control such as valving or selective flow obstruction.

It is further contemplated the present system may be stored on a rack <NUM> for retaining the controller assembly <NUM>, the wand manifold <NUM> as well as supplies of cleaning solution and the wand assembly.

Although the present system <NUM> has been set forth as providing for passage of the solution counter current (or reverse) of the forward flow through the food flow path <NUM> in the food processor <NUM>, it is understood the system can be operably located at an upstream position or upstream end of the food flow path to pass the solution in a forward direction along the food flow path.

It is also contemplated that agents or additives can be introduced by the operator introducing such agents or additives through an access door or port during a flow or no-flow status of the system <NUM>.

Claim 1:
An apparatus for cleaning a soft serve machine, the soft serve machine comprising a first food flow path having a forward flow direction for processing a first food product from an upstream section to a downstream section, the apparatus comprising:
(a) a manifold assembly (<NUM>) including a first wash barrel (<NUM>) configured to engage the soft serve machine; and
(b) a pressurized solution input in the manifold assembly to receive a solution to pass from the first wash barrel and flow along a portion of the first food flow path in a reverse flow direction for exiting the first food flow path at an exit location, wherein the exit location is upstream, relative to the forward flow direction, of the first wash barrel;
the manifold assembly (<NUM>) having an induction port (<NUM>) fluidly intermediate the pressurized solution input and the first wash barrel configured such that an additive can be introduced through the induction port in the manifold assembly into the solution to form a mixture.