DD246745A1 - DEVICE FOR THE OPTIONAL PRODUCTION OF AIR-SEALED, EVACUOUS OR BOTTLED PACKAGING - Google Patents

Abstract

The invention relates to a device which can be preferably used in Haushaltsfolienschweissgeraete or industrial facilities for blowing or sucking the air in or from Einlagerungsbehaeltnissen. The aim of the invention is to provide a filtration device which functions effectively in the suction and blowing function. According to the invention, the object is achieved by arranging a separator, which has an adjustable filter cartridge with filter chambers, between the air flow generator and the suction and blowing nozzle, which is connected to the food container. About an adjusting device, which forcibly determines the suction and blowing function of the air flow generator, the filter chambers of the suction and Blasduese be assigned directly. The adjustable filter cartridge is replaceable or removable for cleaning purposes.

Description

embodiment

The invention will be explained in more detail below with the accompanying drawings, in which:

Fig. 1: Schematic representation of the device

Fig.2: Filter device in section

3: adjusting device

Fig.4: Filter device with modified variant in section

Between the air flow generator 1z. B. a reversible fan, and the suction and blowing nozzle 2 is a separator 3 interposed, in which there is an adjusting device 4 with adjustable filter cartridges 5. The suction and blowing nozzle 2 is received in the receiving opening 6 of the housing 7 so that the flow channel 8 extends into the separator 3 to the adjustable filter cartridge.

The flow channel of the air flow generator 9 opens laterally in the receiving jacket 10 of the separator 3.

The separator 3 receives the adjustable filter cartridge 5. The adjustable filter cartridge 5 has a filter chamber for blowing function 11 and a filter chamber for suction function 12, which is optionally assigned to the suction and blowing nozzle 2 and the air flow generator 1. The blow chamber filter chamber 11 is delimited by the blower filter 13, the suction chamber 12 is confined to the air blower side with the suction filter 14. The two filters 13,14 are removable for the purpose of cleanability or interchangeability and positively and positively fastened in the base body of the adjustable filter cartridge 5.

The setting device 4 determines unmistakably and forcibly the suction or blowing function of the air flow generator 1 and the position of the adjustable filter cartridge 5 via the actuator 15. The unique position of the respective filter chamber 11,12 to suction and blowing nozzle 2 and air flow generator 1 by assigning the adjustable filter cartridge 5 reaches the actuator 15 via the lock for the filter cartridge to the actuator 16, which is preferably realized via a kind of mold-closing connection of the two components.

The holder 17 limits the displacement freedom of the adjustable filter cartridge 5 in the longitudinal axis direction.

The forced switching of the flow direction of the air flow generator 1 for functional fulfillment sucking or blowing is achieved by actuating the switch for suction position 18 or the switch 19 for blowing position via the actuator 15, directly as Figure 3 shows, or indirectly via cam 20 is in Fig.4.

The actuator position is limited or held by the catch for actuator position 21st

In order to avoid flow losses and to improve flow conduction in the suction and blowing streams, it is advisable, in certain embodiments, to provide local seals, e.g. 2, the filter chamber seal 22 and the filter cartridge seal 23rd

For rapid discharge of excessively penetrated into the interior of the device liquid or solid feed particles have the filter chambers 11,12 a separate drain 24. The drain 24 may, as in Fig. 2, open into a collecting cap 25, which simultaneously forms the bottom of the separator 3 and the bracket 17 carries.

In another embodiment, as in Figure 4, the drain 24 leads directly out of the device and is closed via a plug 26. Advantageously, collector cap 25 and plug 26 are made of transparent plastic to check the level of the filter residue 27th

The construction of the means for selectively aspirating and inflating the air from storage containers is such that the adjustable filter cartridge is removable for purposes of cleaning or interchangeability.

Claims (4)

- 1 - Z4Ö / 4Ö Invention claim: 1. A device for selectively producing hermetically sealed, evacuated or inflated packaging in particular packaging bag by means of household foil welders, characterized in that between a air flow generator (1) and the known suction and blowing nozzle of a household foil welding a separator (3) with adjustable filter cartridge (5 ) and adjusting device (4) for selectively setting a suction or blowing function is interposed. 2. Apparatus according to claim 1, characterized in that the adjustable filter cartridge (5) has two filter chambers (11,12), wherein the respective filter chamber intended for the suction or blowing function by means of the adjusting device (4) between the air flow generator (1) and the suction and blowing nozzle (2) is brought, while the filter chamber for the blowing function (11) has a filter (13) at the outlet to the suction and blowing nozzle, the filter chamber for the suction function (12), however, by a filter (14) completed to the flow channel (9). 3. Apparatus according to claim 1 and 2, characterized in that the adjusting device (4) with the filter cartridge (5) is non-positively and positively connected and the switching of the air flow generator (1) from blowing to suction or from suction to blowing function by means Actuator (15) inevitably brings the corresponding filter chamber between the flow channel of the air flow generator '(9) and the flow channel of the suction and blowing nozzle (8) and locked there. 4. Apparatus according to claim 1 and 2, characterized in that at least one of the filter chambers (11,12) of the separator (8) has a drain (24,25) for the Filtrierrückstände (27). For this 3 pages drawings Field of use * The invention relates to a device which can be preferably used in household foil welding or industrial equipment for blowing or sucking the air in or out of storage containers with various Füllinhalten, especially food. Characteristic of the known technical solutions In known household foil welders with air extraction from plastic bags and air in foil bags, the air extraction from the bags via a nozzle which is connected to the bag interior, the air flow channel in the device and the optional reversible suction and Blasstromzeuger, preferably a fan. When the blower function of the device, the air flow direction is reversed by switching the fan. The known technical solutions have the disadvantage that settled by the suction with drawn into the interior of the food particles in the air duct system and germ there. When switching the device to blow function, these germinated food particles and other dirt are blown in part in the storage container, this has a detrimental effect on the shelf life of food to be preserved and is unhygienic. A disassembly of the devices for the purpose of cleaning the air duct system is usually prohibited by the manufacturer and must therefore o.a. be executed. Object of the invention The invention has the objective of eliminating the drawbacks of known technical solutions as much as possible, and of providing a filtration device for selective suction and inflation, preferably in household foil welders or industrial equipment to improve hygiene, increase the shelf life of the food, the ease of servicing such devices by simple cleaning without disassembling the entire device or without intervention in the device to improve. The filtration device must work as effectively as possible for suction and blowing function. Explanation of the essence of the invention The invention has for its object to provide a filtration device for either suction and inflation of the air or in storage containers, insbesondere packaging bag made of film, which makes it possible to prevent the penetration of feed particles from the storage containers into the fan system as far as possible in the suction function of the devices and After switching the device to blow function to prevent the harmful particles as far as possible from entering the storage containers. At the same time, the line system or the filtration device should be easy to clean. According to the invention the object is achieved in that the air flow generator and the suction and blowing nozzle, which is connected to the storage container in a known manner, a separator is interposed, which has an adjustable filter cartridge with a filter chamber for blowing function and a filter chamber for suction. About an adjusting device which unmistakably and forcibly adjusts the suction or blowing function of the air flow generator, the respective filter chamber is forcibly assigned to the suction and blowing nozzle. The adjusting device is positively and positively connected to the adjustable filter cartridge. The adjustable filter cartridge is exchangeable or removable for cleaning purposes.