DE10342204A1 - Device for cleaning an automatic whipped-cream making machine, has closed storage device for input and output of liquid and joined to pumping unit - Google Patents

Abstract

A device for cleaning an automatic whipped cream making machine has devices for transporting water and cleaning fluid, and has a closed storage unit, at least up to the terminals of the valves, for entry and exit of liquid and which is joined to a pumping unit which controls and sucks or pressurizes air. The outputs of the storage unit also lead via further devices into the appliance to be cleaned, preferably into the whipped cream automat.

Description

The invention relates to a device for cleaning preferably an automatic whipped cream machine. such equipment are used to prepare whipped cream from liquid cream. It exists the need for these devices Every day thoroughly to clean, including water for rinsing and pre-rinsing, warm water with detergent for washing and again water for rinsing through the one to be cleaned Channel of the whipped cream machine. This channel exists from the cream container or, if this is cleaned separately, from the sink the intake pipe for the cream with a filter basket placed in the cream container or in the sink from the motor pump for Cream and air and from the mixing device and from the nozzle who exits the cream. The cleaning is considered to be done correctly is proven by tests and certified when pre-defined quantities of Water and water with a specified detergent content with a specified Temperature and flow rate or dwell time led the parts to be cleaned have been.

Similar Cleaning tasks also arise with other devices, in particular at such for the food and -processing where the device presented according to application Can be found. In this respect, the whipped cream machine is only an example Application of the device.

With the whipped cream machines previously offered are subject to the choice of which to pass through the channel to be cleaned Amounts of water, the flow rate and thus the dwell or Exposure time, the choice of temperature, the amount of detergent and the sequence of steps largely the subjective influence of the person doing the cleaning incumbent. From this follows the basic Danger when manually controlled cleaning that the cleaning process is not carried out correctly or not at all in sections.

In the patent DE 29920423 a device for cleaning an automatic cream machine has already been proposed. This works automatically and ensures a defined cleaning success if the process implemented by it runs smoothly. The solution is complex, not very compact, is not very suitable for retrofitting and cannot monitor the cleaning process itself. It requires a considerable effort from the user when assembling and dismantling before or after use, which makes regular and scheduled use more difficult.

OBJECT OF THE INVENTION

The inventive task is therein, a device for cleaning a whipped cream machine Specify the pre-defined cleaning process automatically doing self-checking, and the compact, production-friendly, inexpensive and user-oriented accomplished is.

According to the invention, this object is achieved as follows:
The device for cleaning a whipped cream machine, in short the cleaning device, is arranged above the whipped cream machine or placed on it. Outlet openings on the cleaning device for water and detergent aim at the cream container or the sink, which was used instead of the cream container, and in which the filter basket for the cream is located, which is followed by the suction pipe.

Liquids from the cleaning device dispensed, fall into the cream container or into the sink.

The cleaning device preferably has two containers on, the water storage tank and the detergent storage tank. Both The storage tanks are sealed airtight except for the connection openings.

Both containers are preferred two probes or level switches for signaling one lower and an upper level or with more probes for the Signaling of further water levels equipped. The lower probe can be dispensed with if safety is dispensed with become. Safety is lower when using only one probe, because the complete Leak and thus the regular use of the liquids cannot be checked exactly can. The probes or other level or level indicators change you State when a certain level, a certain level, in the memory is reached.

The cleaning device has a Pump unit on, which can suck air as well as compress, whereby the change of working direction preferably by reversing the polarity of the Drive motor of a bidirectional pump takes place. Such Pump unit is also available with a unidirectional pump and switching valves built up. The effect of the pump or pump unit is two Valves and hoses either on the water storage tank or on the detergent storage tank directed.

The water storage tank has a connection from which a hose over a check valve leads to a water supply. This water supply can be in a provided bucket or in a other vessel included his.

The outlet of the water tank leads locally via a further check valve via the cream container or the sink. If liquid escapes from the outlet of the water storage tank, it runs into the cream container or the sink. The water tank is provided with a heater and a temperature measuring or switching device that the heating controls.

The detergent storage has a connection, from which a hose via a check valve into a detergent supply leads. This stock can be supplied in a commercially available bottle be included. The exit of the detergent storage introduces via another check valve locally via the cream container or the sink. Occurs fluid from the outlet of the detergent storage, it runs in the cream container or in the sink.

[Examples]

1 shows the device for cleaning a whipped cream machine, placed on this in the section indicated whipped cream machine.

The housing 1 of the whipped cream machine contains the cream storage or the sink 2 , into which the SK suction cup and the SR suction pipe protrude, which lead to the machine's SPU pump. The cleaning device RV according to the invention is placed on the cream machine. It has the water reservoir WS and the detergent reservoir RS. The water reservoir WS has a probe for an upper level SWO and one for a lower level SWU. The cleaning agent reservoir RS has a probe for an upper level SRO and one for a lower level SRU. The pump PU, preferably a reversible air pump, is connected to the water reservoir via a valve V1 and to the detergent reservoir via a valve V2.

Introduces from the water storage Hose over a check valve RV1, which opens towards the water storage, to the water supply WV in a container to be provided.

Another hose leads from Water storage above a check valve, that opens away from the water reservoir, to place over the cream container or sink of the whipped cream machine.

A hose leads from the detergent store through check valve RV3, which opens towards the detergent store, into the Detergent supply RV in a bottle.

Another hose leads from Detergent storage over a check valve, that opens from the detergent storage to the location above cream container or the sink.

The water storage is with one Heating HEI provided and has a means TM for temperature determination on that on the activity the heating.

The cleaning device continues Means with which they switch the pump of the whipped cream machine can. That can over a cable with plug and socket. However, preferably contains the additional device a magnetic coil MSP, which is magnetic and thereby through the stainless steel cladding of both devices through a magnetic field sensitive Switch RKON operated in the whipped cream machine and thus its pump SPU on.

The whipped cream machine shows medium with which he informs the cleaning device of his type can. This too can over Cables and plugs are made. Preferably, however, by several distributed permanent magnets MAG under the stainless steel cladding magnetic digital pattern on the surface of the whipped cream machine generated, the arrangement of which signals the device type. In the There are so many magnetically sensitive sensors in the cleaning device or switch SM in the position of use compared to the permanent magnets, like places in whipped cream machines for permanent magnets in total, which do not all have to be occupied. The Switching pattern of the outputs these sensors or switches signal the cleaning device the type of whipped cream machine so that by a controller in the cleaning device, at the inputs of which the signals are present, then the cleaning process and in particular the running time the cream pump during the exposure time depending of the flow the pump can be adapted to the type.

Another version consists of a transmitter coil in the cleaning device and in the whipped cream machine, which each in the other device a reception coil opposite stands. Current pulses in the transmitter coils turn into voltage pulses induced in the receiving coils, the coils each with one data processing device are connected, which in a known manner serial data transmission protocol is realized.

• – Ein Controller in der Reinigungsvorrichtung liest die Signale der Sensoren oder Schalter SM und bestimmt aus den Signalen den Typ und damit die Pumpleistung S des Sahneautomaten SPU.
• – Die Pumpe PU wird über V1 mit dem leeren Wasserspeicher WS verbunden.
• – Die Pumpe wird so geschaltet, dass sie Luft aus dem Wasserspeicher WS saugt.
• – Dadurch gelangt Wasser aus dem Wasservorrat WV in den Wasserspeicher WS.
• – Ist der obere Pegel im Wasserspeicher erreicht, schaltet die Pumpe ab und V1 schließt.
• – Die Pumpe wird dann umgekehrt und V1 geöffnet. Dadurch wird Wasser aus dem Wasserspeicher in den Sahnebehälter oder in den Spültopf gefördert bis der untere Pegel des Wasserspeichers erreicht ist.
• – Die Spule MSP schaltet über RKON die Pumpe PU des Schlagsahne-Automaten ein und Spülwasser wird durch den zu reinigenden Kanal gesaugt.
• – Die Reinigungsvorschrift erfordert eine Wirkungszeit Tw des Wasser oder der Lösung im zu reinigenden Kanal des Sahneautomaten. Um auch bei geringen zu fördernden Mengen Vw die Wirkungszeit Tw zu erreichen, wird die Pumpe, die den Förderstrom S hat, während der Einwirkungszeit wiederholt nur für kurze Zeiten eingeschaltet. Die Summe Tan aller Ein-Zeiten verhält sich zu Tw wie Vw/(S*Tw). Dieser Quotient ist das Tastverhältnis mit dem die Pumpe im Sahneautomaten während der Einwirkungszeit intermittierend angesteuert wird.
• – Die Pumpe PU saugt erneut Wasser in den Wasserspeicher bis zu dessen oberem Pegel. Mit der Heizung HEI wird dieses Wasser bis auf eine durch die Temperaturmessvorrichtung TM bestimmte Temperatur erwärmt.
• – V1 wird geschlossen und V2 geöffnet. Die Pumpe PU saugt dann, vorzugsweise während des Heizens, Reinigungsmittel aus dem Reinigungsmittelvorrat in den Reinigungsmittelspeicher bis dessen oberer Pegel erreicht ist.
• – Ist das Wasser warm genug, wird die Pumpe umgekehrt eingeschaltet und drückt dann durch abwechselndes Öffnen von V1 und V2 Wasser und Reinigungsmittel in den Sahnebehälter oder in den Spültopf, in dem aus der Mischung von Wasser und Reinigungsmittel das Waschwasser entsteht.
• – Wieder wird über die Spule MSP die Pumpe des Schlagsahne-Automaten so lange mit dem angeführten oder neuerlich berechneten Tastverhältnis eingeschaltet, bis die gesamte Waschwassermenge während der Einwirkungszeit durch den zu reinigenden Kanal geführt ist.
• – Die Pumpe PU saugt erneut Wasser in den Wasserspeicher bis zu dessen oberem Pegel. Dieses Wasser wird wieder wie beschrieben in den Sahnebehälter oder an dessen statt in den Spültopf gefördert und bildet das Spülwasser, das wieder durch intermittierendes Schalten der Pumpe des Sahne-Automaten durch den zu reinigenden Kanal geführt wird.
• – Damit ist der Reinigungsvorgang abgeschlossen.

A cleaning process now runs as follows

• - A controller in the cleaning device reads the signals from the sensors or switches SM and determines from the signals the type and thus the pumping power S of the automatic cream dispenser SPU.
• - The pump PU is connected to the empty water reservoir WS via V1.
• - The pump is switched so that it sucks air out of the water storage tank WS.
• - As a result, water from the water supply WV enters the water storage WS.
• - When the upper level in the water tank is reached, the pump switches off and V1 closes.
• - The pump is then reversed and V1 opened. As a result, water is pumped from the water reservoir into the cream container or into the sink until the lower level of the water reservoir is reached.
• - The coil MSP switches on the pump PU of the whipped cream machine via RKON and rinsing water is sucked through the channel to be cleaned.
• - The cleaning instruction requires an action time Tw of the water or the solution in the cleaning machine of the cream machine. In order to achieve the action time Tw even with small quantities Vw to be delivered, the pump, which has the delivery flow S, is repeatedly switched on only for short times during the action time. The total tan of all one times is related to Tw like Vw / (S * Tw). This quotient is the duty cycle with which the pump in the cream dispenser is controlled intermittently during the exposure time.
• - The PU pump sucks water into the water reservoir up to its upper level. With the heater HEI this water is heated up to a temperature determined by the temperature measuring device TM.
• - V1 is closed and V2 is opened. The pump PU then, preferably during heating, sucks detergent from the detergent supply into the detergent storage until its upper level is reached.
• - If the water is warm enough, the pump is switched on in reverse and then by alternately opening V1 and V2 presses water and cleaning agent into the cream container or into the sink, in which the washing water is created from the mixture of water and cleaning agent.
• - Again, the pump of the whipped cream machine is switched on via the MSP coil with the specified or recalculated duty cycle until the entire amount of wash water is led through the channel to be cleaned during the exposure time.
• - The PU pump sucks water into the water reservoir up to its upper level. This water is again conveyed as described into the cream container or instead into the sink and forms the rinsing water which is again led through the channel to be cleaned by intermittently switching the pump of the cream machine.
• - The cleaning process is now complete.

Because both in the water as well the respective liquid is stored one or more times in the detergent storage can move between the lower and lower levels can by Tracking the associated switching operations with regard to occurrence and the time interval of the cleaning process is comprehensively monitored become. From a process that deviates too far from the specifications an indication of an error can be derived.

Another version is the entrance of the water storage over an inlet valve to a central water supply network that is under Pressure is connected. The water is then no longer drawn in. The water reservoir is filled by opening the inlet valve until the upper level indicator is activated.

S

Förderstrom der Sahnepumpe (Liter/min)

Vw

durch die Sahnepumpe zu förderndes Volumen

während eines Reinigungsabschnittes

Tw

Einwirkungszeit während eines Reinigungsab

schnittes

Tan

Summe der Zeiten in der die Sahnepumpe während

eines Reinigungsabschnittes aktiv ist

Symbols:

S

Delivery rate of the cream pump (liters / min)

vw

volume to be conveyed by the cream pump

during a cleaning section

tw

Exposure time during a cleaning

section

Tan

Sum of the times in which the cream pump during

a cleaning section is active

Claims (10)

Device for cleaning preferably an automatic whipped cream machine with means that transport water and detergents and dosing, characterized in that the device at least one except connections, which are connected to valves for the entry or exit of liquid has closed storage with a pump unit, the controlled sucking or pressing air, is connected, the outputs the store too over run further agents into the device to be cleaned, preferably in the whipped cream machine. Device according to claim 1, characterized in that that the device has two stores, a water store WS and a detergent storage RS, each one Valve are connected to the pump unit. Device according to claim 1 and 2, characterized by the fact that the memory or the storage means have a or to several water levels address in or in the memory by changing the state. Device according to claim 1, characterized in that that the valves on the connections the memory check valves are permeable towards the store at the entrance to the store, permeable at the exit towards away from the store. Device according to claim 1, characterized in that that the device has a magnetic coil and the whipped cream machine a magnetic field sensitive contact, the activation of which the cream pump of the whipped cream machine activated, taking a sufficiently large current activated by the magnetic coil the contact and so the cream pump. Device according to claim 1, characterized in that the device has a plurality of magnetic field-sensitive elements, which when the device is in the working position in the Whipped cream machines are opposed to magnets that form a digital pattern that is recognized by the magnetic field sensitive elements in the device, whereby information can be transmitted from the whipped cream machine to the device. Device according to claim 1, characterized in that that both the device and the whipped cream machine each have one Have a transmitter coil, each of which is opposed by a receiver coil in the other device, being about Current pulses in the transmitter coils and voltage pulses in the receiver coils realized a serial data transmission protocol is. Device according to claim 1, characterized in that that the device contains a programmed controller the one with the state changes the level sensor connected signals act and the by means of a Program the logical and temporal sequence of the occurring changes in state compares with a specified stored sequence and at too huge Differences an error message is activated. Device according to claim 1 and according to claims 5 and 6, characterized in that the device by means of a controller from the signals of the magnetic field sensitive elements via a saved table the flow rate S the pump in the automatic cream machine and from there for the intermittent Switch on the pump via the solenoid during the exposure time Tw a duty ratio Tan / Tw according to the equation Vw / S * Tw determined, where Vw is to be promoted in the exposure time Volume is. Device according to claim 1, characterized in that that the inlet of the water tank via an inlet valve with a central pressurized water supply network is.