초록 ▼

A multi-outlet soft frozen dessert apparatus for a self-service restaurant with multiple freezers attached to the wall dividing the client area of the restaurant from the kitchen area is provided. The freezers of apparatus may include an evaporation tube comprised of an aluminum alloy micro-channel

A multi-outlet soft frozen dessert apparatus for a self-service restaurant with multiple freezers attached to the wall dividing the client area of the restaurant from the kitchen area is provided. The freezers of apparatus may include an evaporation tube comprised of an aluminum alloy micro-channel parallel flow extruded tape. The mix vats of the apparatus may include circulating water in a hydraulic system having added antifreeze to suppress a freezing temperature in the range of −2° C. to −5° C. to assure adequate approach temperature to cool a mix in the mix vat. The apparatus may include scrape blades mounted on a helical part of the beater-scraper that scrape a thin layer of ice crystals from an internal surface of the inner cylinder and fold the ice crystals inside the mix bulk.

대표청구항 ▼

1. A multi-outlet soft frozen dessert apparatus comprising: at least two semi-independent stations distributed along a wall, each of the at least two stations are manipulated by a customer to dispense a soft frozen dessert,a condenser with a single refrigerant expansion device and a partially expand

1. A multi-outlet soft frozen dessert apparatus comprising: at least two semi-independent stations distributed along a wall, each of the at least two stations are manipulated by a customer to dispense a soft frozen dessert,a condenser with a single refrigerant expansion device and a partially expanded refrigerant distributor,each of the at least two stations comprising:a freezing cylinder mounted on a plurality of brackets attached to the wall, the freezing cylinder is served by the condenser with the single refrigerant expansion device and a partially expanded refrigerant distributor, the freezing cylinder has a solenoid valve installed between the distributor and the freezing cylinder, the condenser has variable capacity utilizing one or more compressors, the wall divides a service area from a customer area of a self-service restaurant, the freezing cylinder includes an inner cylinder and a micro channel evaporator tube made of micro channel tape wound on a mandrel that is forced on the inner cylinder of the freezing cylinder or an evaporator, a heating disk is coupled to a back cap of the freezing cylinder,the micro channel evaporator tube has headers brazed to both ends of the evaporator tube serving as connectors, the headers are made of cylindrical tubing and have slots for micro channel tube penetration,the freezing cylinder having a mix inlet connector for delivering a mix to the freezing cylinder,an air vent tube is disposed at the top of the freezing cylinder with the solenoid valve and a light proximity sensor installed on a transparent part for detection of mix foam reaching a top portion of the freezing cylinder,wherein variable capacity is achieve by multiple compressors with constant capacity by turning on a different number of compressors or a single variable capacity compressor, the capacity changes or a single variable capacity compressor,wherein the capacity changes in steps and if one of the compressors has variable capacity the capacity control is stepless;a product dispenser having a dispensing lever and a spigot the product dispenser located in a window-port of the wall;a geared motor mounted on a back of the freezing cylinder, the geared motor rotating a beater-scraper inside the freezing cylinder;a current sensor measuring a current of the geared motor, the current sensors reports a current measurement to a control system, the current measurement is a function of viscosity of a product, so a value of the viscosity of the product is represented as a value of the current, then the current reaches a set point, the control system issues a command to stop flow of a refrigerant through the micro-channel evaporator of the freezing cylinder and stop the geared motor;a mix vat located below the freezing cylinder, the mix vat includes a pair of concentric pots, said pair of concentric pots comprising a larger concentric pot and a smaller concentric pot inside of the larger concentric pot, with a gasket between the pair of concentric pots and a drain disposed on a center bottom portion of the larger concentric pot, the mix vat having a thermally insulated cover and a non-contact mix level sensor mounted in a recess of the thermally insulated cover, the mix vat also having a hydraulic system, the hydraulic system selectively provides chilled water or hot water to the mixing vat;one or more water inlet pipes tangentially mounted or welded close to the top of a cylindrical wall of the larger pot below the gasket in a way that axes of the pipes are parallel to the bottom surface of the larger pot;an insertion type temperature sensor measuring product temperature in a dispensing compartment of the freezing cylinder, anda tee in a mix suction line upstream from a pump with a precision air intake regulator installed on a branch anda restrictor on the mix suction line upstream from the tee increasing the mix suction line hydraulic resistance and reducing influence of a mix level on overrun value. 2. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the air vent tube purges air during priming the freezing cylinder. 3. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the insertion type temperature sensor is coupled at a bottom of a mix suction pipe of the mix vat. 4. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the proximity sensor signals to the control system when the customer starts and stops dispensing the product. 5. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the soft frozen dessert is selected from the group consisting of any combination of soft-serve ice cream, ice milk, yogurt, custard, carbonated ice slush drinks and non-carbonated ice slush drinks. 6. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the evaporator tube is an aluminum alloy micro-channel parallel flow extruded tape inserted inside the headers before brazing. 7. The multi-outlet soft frozen dessert apparatus according to claim 1 wherein an extruded tube is winded on a smaller mandrel and is forced on the inner cylinder greased with heat conducting paste creating contact pressure between the extruded tube and the inner cylinder. 8. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the window-port has a drip pan. 9. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein a plurality of scraper blades are mounted on a helical part of the beater-scraper in a manner that scrape a thin layer of ice crystals from an internal surface of the inner cylinder and fold the ice crystals inside the mix. 10. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the water circulated in the hydraulic system has antifreeze added to suppress a freezing temperature in the range of −2° C. to −5° C. to assure adequate approach temperature to cool the mix in the mix vat. 11. The multi-outlet soft frozen dessert apparatus according to claim 1, wherein the mix vat is installed on a dolly for ease of moving the mix vat to fill, wash and maintaining the mix vat.