# US 2021/0276750 A1 · Apparatus for the vacuum packaging of food > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276750 A1 - Document ID: US20210276750A1 - Status: Published application - Kind: A1 - Application number: 17/190,941 - Filed: 2021-03-03 - Published: 2021-09-09 - Earliest claimed: 2020-03-04 - Inventors: Marziano SALVARO - Web page: https://patentgrep.com/patent/US20210276750A1 ## CPC - B65B 31/024: {specially adapted for wrappers or bags (B65B31/021, B65B31/022 take precedence)} - B65B 31/046: {the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper (B65B31/06 takes precedence)} - F04B 53/08: Cooling; Heating; Preventing freezing - F04B 53/20: Filtering - F28D 7/0008: {the conduits for one medium being in heat conductive contact with the conduits for the other medium} - F28F 7/02: Blocks traversed by passages for heat-exchange media {(F28D7/0008 takes precedence)} - B01D 2259/4525: for storage and dispensing systems - F04B 2201/0801: Temperature - F28D 2021/0038: {for drying or dehumidifying gases or vapours} - B65B: MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING (bundling and pressing devices for cigars A24C1/44; devices for tensioning and securing binders adapted to be supported by the article or articles to be bound B25B25/00; applying closure members to bottles, jars or similar containers B67B1/00-B67B6/00; concurrent cleaning, filling and closing of bottles B67C7/00; emptying bottles, jars, cans, casks, barrels or similar containers B67C9/00) - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract An apparatus for the vacuum packaging of food, which includes a base structure which defines a vacuum chamber which can be connected to a vacuum pump. Between the vacuum chamber and the vacuum pump, at least one air filtration device is provided which has elements for varying at least one thermo-fluid dynamics parameter of the flow of air extracted from the vacuum chamber by the vacuum pump, in order to enable the elimination, from the air extracted from the vacuum chamber, of water, biochemical liquids and biological materials. ## Claims ### Claim 1 An apparatus for the vacuum packaging of food, which comprises a base structure which defines a vacuum chamber which is configured to be connected to a vacuum pump, further comprising, between said vacuum chamber and said vacuum pump, at least one air filtration device which has variation means configured for varying at least one thermo-fluid dynamics parameter of a flow of air extracted from said vacuum chamber by said vacuum pump, in order to enable the elimination, from the air extracted from said vacuum chamber, of water, biochemical liquids, and biological materials. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein said filtration device comprises an enclosure which has at least one inlet which communicates with said vacuum chamber and at least one outlet which communicates with said vacuum pump, said variation means being interposed along the path of the flow of air inside said enclosure from said inlet to said outlet. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein said variation means comprise means for varying a temperature of the flow of air extracted from said vacuum chamber. ### Claim 4 (depends on 1) The apparatus according to claim 1, wherein said variation means comprise means for varying a momentum of a quantity of motion of said flow of air extracted from said vacuum chamber. ### Claim 5 (depends on 1) The apparatus according to claim 1, wherein said variation means comprise means for varying a pressure/speed of the flow of air extracted from said vacuum chamber. ### Claim 6 (depends on 1) The apparatus according to claim 1, wherein said variation means comprise means for varying a density, at a constant volume, of the air extracted from said vacuum chamber. ### Claim 7 (depends on 3) The apparatus according to claim 3, wherein said means for varying the temperature comprise cooling means. ### Claim 8 (depends on 2) The apparatus according to claim 2, wherein at least one air conveyance channel is defined in said enclosure and extends from said inlet to said outlet, along said conveyance channel there being at least one condensation chamber for condensing the water contained in the flow of air that passes through said conveyance channel, said cooling means comprising means configured for circulating a cooling fluid, in a heat exchange relationship with said condensation chamber, at least one discharge port for the water condensed and separated from the flow of air passing through said conveyance channel being defined in said enclosure. ### Claim 9 (depends on 8) The apparatus according to claim 8, wherein said enclosure has an axial extension, said inlet being defined axially at one end of said enclosure, said condensation chamber extending along the axis of said enclosure. ### Claim 10 (depends on 8) The apparatus according to claim 8, wherein said outlet is defined radially at another end of said enclosure and communicates with at least one connecting portion of said conveyance channel which is connected to said condensation chamber and extends circumferentially around the axis of said enclosure. ### Claim 11 (depends on 8) The apparatus according to claim 8, wherein at least one portion which increases a speed of the flow of air that passes through said conveyance channel is defined along said conveyance duct, between said condensation chamber and said outlet. ### Claim 12 (depends on 8) The apparatus according to claim 8, further comprising heating means in a heat exchange relationship with said conveyance channel.