Vojta – Freezers

VOJTA continuous freezers for ice cream production

Company Vojta s.r.o. offers a range of continuous freezers for industrial ice cream production, designed for stable, repeatable and cost-effective operation. The equipment combines a robust stainless steel construction, compact design and a high level of automation, ensuring consistent product quality across different production modes.

VOJTA freezer model range

• F700 — compact continuous freezer for medium-sized production lines;
• F1200 — a model with increased productivity for intensive production;
• F1500/2 — dual-circuit freezer for simultaneous operation with two mixtures.

General technical specifications

All VOJTA freezer models share a common technical platform focused on reliability, hygiene and precise control of the freezing process.

• completely stainless steel construction;
• high-efficiency refrigeration unit with semi-hermetic compressor Bitzer;
• direct expansion system with R404A refrigerant;
• horizontal freezing cylinder with chrome-plated, mirror-polished inner surface;
• stainless steel rotor with scraper blades and beater;
• gear pumps for mixing and dispensing in CIP design;
• highly efficient air filtration and sterilisation system;
• mass air flow controller;
• mixture flow meter;
• temperature sensors at the mixture inlet and ice cream outlet;
• pressure sensor in the freezing cylinder;
• openable capacitor for convenient service access;
• consistent and repeatable ice cream quality;
• remote technical support via the Internet.

Features of the F1500/2 model

Freezer F1500/2 combines two F700 freezers in one compact housing. This configuration allows two different mixtures to be produced independently at the same time, which is an optimal solution for multi-product lines and flexible production.

Control and automation system

VOJTA freezers are equipped with a 7-inch touch screen that provides complete control over key parameters of the freezing process:

• automatic performance control using a volumetric mixture flow meter;
• automatic viscosity control by means of hot gas injection;
• automatic air saturation coefficient based on mass flow meter;
• automatic pressure regulation in the cylinder;
• automatic temperature control at the ice cream outlet.

The control panel provides the operator with complete and clear information about the status of the process, including automated start-up and shutdown sequences, product holding modes, and CIP cleaning.

Additional equipment and options

• variable rotor speed;
• additional pumps for precise distribution of ice cream on filling and extrusion lines;
• built-in control of simple filling devices with manual feed;
• starting valve with manual or automatic three-way valve;
• duplication of freezer control on the displays of extrusion or packaging machines;
• collection and transfer of production data to the enterprise management system.

Application in industrial production

VOJTA continuous freezers are a reliable solution for industrial production of ice cream in various formats. They ensure consistent product quality, high process efficiency and easy integration into modern production lines.