EP2670265B1 - Schutzanzug zur verwendung in einem kühlraum - Google Patents

Schutzanzug zur verwendung in einem kühlraum Download PDF

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Publication number
EP2670265B1
EP2670265B1 EP12702764.7A EP12702764A EP2670265B1 EP 2670265 B1 EP2670265 B1 EP 2670265B1 EP 12702764 A EP12702764 A EP 12702764A EP 2670265 B1 EP2670265 B1 EP 2670265B1
Authority
EP
European Patent Office
Prior art keywords
glove
suit
heating
protective suit
operator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12702764.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2670265A2 (de
Inventor
Günter R. FUHR
Heiko Zimmermann
Klaus-Peter Hoffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Publication of EP2670265A2 publication Critical patent/EP2670265A2/de
Application granted granted Critical
Publication of EP2670265B1 publication Critical patent/EP2670265B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
    • A41D13/005—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
    • A41D13/0051—Heated garments
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/005—Active or passive body temperature control
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/015—Protective gloves
    • A41D19/01529—Protective gloves with thermal or fire protection
    • A41D19/01535—Heated gloves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/033—Heater including particular mechanical reinforcing means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/036—Heaters specially adapted for garment heating

Definitions

  • the invention relates to a protective suit for use by an operator in a cold room, in particular in a cooling system for the cryopreservation of biological samples.
  • the invention also relates to a glove in combination with the protective suit.
  • Applications of the invention are in the operation of refrigeration systems for long-term storage of samples in the cooled state, especially in the cryopreservation of biological samples, given.
  • cryobanks are typically operated at temperatures below -80 ° C, in particular at a temperature below the recrystallization temperature of water ice (-138 ° C). They contain a coolant reservoir with liquid nitrogen (temperature: about -195 ° C) and a large number of individual tanks (so-called cryogenic tanks, mostly double-walled Dewar vessels). The cryogenic tanks stand in rooms at normal temperature (room temperature), in which operators can be without special protective measures.
  • Conventional cryobanks with individual cryotanks have disadvantages when it comes to cryopreserving large quantities of samples, such as ten thousand to one million or more samples. There are limitations to the effectiveness of the cryogenic tank operation, the provision of constant cooling conditions, and the automation of cryobank operation, particularly sample handling. To overcome these limitations, there is an interest to replace the conventional cryogenic tanks with larger storage units.
  • the cooling system comprises a cooling space and a cooling device, which is provided for cooling the cooling space with liquid nitrogen.
  • the cooling system operates fully or semi-automatically in normal operation, ie no personal inspection is required, an inspection by operators must be possible in the event of maintenance and damage. Without protective measures, however, people can not enter rooms with temperatures below -70 ° C, since frostbite of the skin, eyes and lungs would be unavoidable and would soon lead to life-threatening conditions. For example, it is known that at the cold poles of the earth at temperatures below -60 ° C physical activity of humans with a strong inhalation lead to frostbite of the alveoli.
  • the object of the invention is to provide an improved protection of an operator in a refrigeration system for the cryopreservation of biological samples, overcoming the disadvantages and limitations of conventional protective measures.
  • This object is achieved by a protective suit having the features of claim 1.
  • Advantageous embodiments and applications of the invention will become apparent from the dependent claims.
  • a protective suit in particular for an operator in a cold room with a temperature below -100 ° C, especially below -150 ° C, z. B. -190 ° C or below, in particular, a body suit for receiving the operator and a heater for heating the body suit comprises.
  • the protective suit is adapted for use in a cold room cooled in particular with liquid nitrogen or liquid nitrogen vapor.
  • the body suit is made of a thermally insulating jacket material (shell material).
  • the jacket material forms a gas-tight envelope for the operator.
  • the heater is connected to the body suit and tuned with the thermal conductivity of the jacket material so that inside the body suit a physiological acceptable temperature (temperature above -30 ° C, especially above -10 ° C, eg 0 ° C or above) is provided.
  • the heater or parts of this are connected to the jacket material of the body suit, so that it is directly tempered by the heater.
  • a protective suit can be provided which provides reliable protection to a person in the suit even at extremely low temperatures in a refrigerated space cooled with liquid nitrogen .
  • the protective suit provides complete and safe thermal insulation of the entire body of the operator. At the same time, the heat output from the operator in the cold room is minimized.
  • the operator may wear normal clothing, laboratory clothing or warm (lined) textile clothing in the suit.
  • the heater performs a dual function by firstly providing a sufficient temperature inside the body suit and secondly, the jacket material and / or other parts of the body suit such. B. joint areas can be heated so that at the low temperature in the refrigerator sufficient flexibility is given to ensure the mobility of the operator in the refrigerator.
  • the protective suit according to the invention provides protection of the entire body of the operator, in particular the legs, feet, arms and hands against cooling, even in the case of direct contact of the outside of the suit with liquid nitrogen.
  • the operator can move freely in the protective suit in the cold room and use the protective suit autonomously.
  • the use in the cold room is for a period of at least 10 Minutes, especially at least 30 minutes, such as 60 minutes or longer possible.
  • the heating device comprises an electrical resistance heater.
  • the resistance heating can advantageously be easily embedded in the jacket material of the body suit or positioned on its inner surface.
  • the resistance heating also has advantages in terms of power supply via an electrical line connection to an internal and / or external power source and a short response time when changing the temperature in the body suit.
  • the electrical resistance heating comprises heating layers which are positioned distributed in the body suit. Heating layers comprise layered resistance materials, such as e.g. metallic alloys, tungsten, plastic films coated with heating resistors, or indium tin oxide layers. Heating layers have the advantage of minimizing the wearing comfort for the operator.
  • the heating device may comprise a heating medium circuit which extends into the body suit.
  • the heating medium circuit is embedded in the sheath material of the body suit or positioned on the inner surface thereof and connected to an internal and / or external heating medium source for a gaseous or liquid heating means, such as air or silicone oil.
  • a gaseous or liquid heating means such as air or silicone oil.
  • the use of the heating medium circuit can have advantages in terms of the effectiveness of the heating and a uniform distribution of heat in the body suit.
  • the heating medium circuit comprises a multiplicity of lines which are distributed in the body suit and form one or more ring lines (partial circuits).
  • the cladding material is constructed in multiple layers from at least two cladding layers (layers).
  • the multilayer structure has advantages in terms of adaptation of the cladding material to a mechanical protection and sealing function and to a thermal insulation function.
  • an outer cladding layer may be formed of a material that is designed for sealing and mechanical protection, while another, inner cladding layer forms an insulating layer.
  • the outermost cladding layer has a gas-tight outer skin, e.g. from polymers, e.g. PTFE, metal coatings, silicone coating, ceramics or paints, under which a stabilizing layer, e.g.
  • a heating area forms a separate innermost cladding layer, wherein in the heating area at least parts of the heating means, e.g. the heating layers or the lines of the heating medium circuit are arranged.
  • the insulating layer according to the invention is provided with a heat reflection foil, e.g. equipped with a metal-coated plastic film.
  • the jacket material can carry more layers especially on its outside.
  • the insulating layer is formed of a plastic material having a thermal conductivity below 0.1 or 0.05 W / (m ⁇ K).
  • the jacket material contains at least one inflatable or evacuated intermediate layer, which is preferably arranged inside or outside adjacent to the heating area.
  • the jacket material of the body suit is flexible.
  • the flexibility is realized at any temperature in the cold room by at least the outer layers of the jacket material are formed from a -200 ° C flexible plastic and / or heated by the heater to a temperature above -200 ° C, in which the outer Layers of the jacket material are flexible.
  • the jacket material of the body suit is rigid, wherein parts of the body suit are connected via joint areas.
  • fewer requirements are placed on the materials of the outermost cladding layers and / or their heating in this case.
  • the joint areas must be heated in order to remain flexible at a low temperature.
  • the position of the heater in the composite layer and the thermal conductivity of the materials used are chosen so that a heat flow from the heater for the most part flows inward and flows to a lesser extent to the outside.
  • more than half, preferably more than 75%, of the heat flow flows inward, while the remainder of the heat flow flows outward and heats the outer cladding region.
  • the heater is operated with such a power that the physiologically acceptable temperature is reached inside the protective suit and the outer jacket or hinge region layers are heated to a temperature at which they remain at an ambient temperature below z. B. -90 ° C are flexible.
  • the position of the heating device can be selected, for example, such that it is arranged on the inner surface of the jacket material.
  • the inside of the suit can be heated particularly effectively.
  • the cladding material would be selected with a small thickness. In this variant, there is an increased energy consumption of the heater, but due to the small thickness of the jacket material, a low weight of the suit and its easy mobility is achieved.
  • the heater may be embedded in the depth of the cladding material.
  • the inward or outward flowing portions of the heat flow delivered by the heater may be selected to effectively heat the outer cladding layers and the interior of the protective suit while still maintaining good thermal insulation of the operator from the environment.
  • the body suit is provided with flexibility of the jacket material on a front side with a manhole at which layers of the jacket material are arranged overlapping each other.
  • a step-shaped overlap region is provided in the multilayer construction of the jacket material.
  • the access opening is preferably provided in a shoulder region or a body region of the body suit.
  • rigid or flexible connecting elements may be provided which lock during assembly and seal the interior of the suit.
  • the body suit of the protective suit according to the invention is equipped with a helmet.
  • the helmet is located at the top of the body suit and set up for a gas-tight enclosure of the operator at her head.
  • the helmet comprises a mechanically stable, the head of the operator completely surrounding and gas-tight with the body suit connected component which has a transparent front window at least in the viewing direction of the operator.
  • the helmet has a shape that is adapted to the shape of the head, in particular the shape of a ball or a spherical section. If at least the windscreen, preferably the entire helmet, is formed from a double-walled, evacuated disk material, there are advantages for the thermal insulation of the interior of the helmet.
  • a ball or a ball section of a double-walled, evacuated material is provided.
  • the helmet can take on at least one of the following additional functions of the protective suit.
  • a pressure relief valve may be provided on the helmet, over which in case of malfunction of the breathing air supply, an overpressure in the suit can be reduced.
  • the helmet can be equipped with a disk heater to improve the operator's view.
  • the disc heater consists eg of a transparent heating material, such as ITO (indium tin oxide).
  • the helmet can be equipped with a rear-view mirror, which improves the operator's view to the rear and reduces the demands on the mobility of the suit.
  • the helmet can be equipped with a coupling device, via which the protective suit can be connected via a supply line with another protective suit or an emergency supply device.
  • leg and arm parts are elongated sections of the body suit that may be equipped with other joint areas in the area of the knee and ankle or elbow and wrist.
  • the provision of the joint areas has the advantage that lower requirements can be placed on the flexibility of the jacket material without impairing the mobility of the operator in the cold room.
  • the body suit is equipped with a belt device which preferably surrounds the body part and optionally parts of the leg parts.
  • a belt device which preferably surrounds the body part and optionally parts of the leg parts.
  • an external support means e.g. a tether, be coupled.
  • the operator can be reliably pulled out of the cold room in the suit by means of the support means.
  • the belt device can be used to attach loads to the suit.
  • the protective suit according to the invention can be equipped with an emergency supply device, which is a respiratory air reservoir in the protective suit and / or a coupling device for connection to an external supply device.
  • the breathing air reservoir comprises, for example, a compressed air cylinder, a heating cartridge and a valve-controlled connecting line between the compressed air cylinder and the inside of the protective suit.
  • the breathing air reservoir can be integrated into the helmet of the body suit, for example.
  • Further components of the protective suit which are preferably arranged in the helmet, comprise a lighting device for illuminating the environment of the protective suit, a sensor device for detecting the oxygen content, the temperature and / or physiological properties of the operator, an alarm device for warning the operator of undesired operating states and / or a communication device for wireless or wired communication of the operator with other assistants in or outside the refrigerator.
  • the protective suit according to the invention has shoes for receiving the feet of the operator.
  • the shoes are made for use in cold rooms, which are typically cooled from the ground using liquid nitrogen, special requirements in terms of mechanical and thermal protection of the operator.
  • the shoes have at least one of the following features.
  • platform soles, z. B. provided with a thickness of at least 4 cm, in particular at least 6 cm.
  • the platform soles offer the possibility of effective thermal insulation and increase the distance of the shoes from a provided in the bottom of the refrigerator cooling device with liquid nitrogen.
  • the platform soles can be equipped with sole profiles, which allow a reduction in the contact area between the shoe and the ground.
  • the shoes according to the invention be equipped with sole cavities. These include gas-filled or evacuated areas in the soles.
  • this improves the thermal insulation of the shoes.
  • the shoes can be provided with protective layers against mechanical injuries, eg using ceramics.
  • the interior of the shoes is sized to provide adequate room for movement of the foot in the shoe, even when the operator is wearing thermal insulation clothing.
  • flexible adjustment elements are preferably provided in the leg portion or in the shoe configured to receive a portion of the leg or foot of the operator and support in the protective suit are.
  • the protective suit according to the invention is connected to an external breathing air supply via a supply line, in particular a heated hose line, or a breathing air source is provided in the protective suit.
  • the source of breathing air is adapted to supply breathable air to the interior of the suit.
  • the breathing air source is housed in a back part of the protective suit.
  • a portion of the heater is configured to heat the air provided by the source of breathing air.
  • the breathing air source has the additional advantage that the protective suit can be subjected to an overpressure compared to the environment in the cold room.
  • the overpressure can be chosen so that the protective suit physiological breathing conditions are given and unfolds the interior of the body suit or parts of this under the effect of the internal pressure (inflated).
  • an additional thermal insulation is thus achieved.
  • the suit may be equipped with a compressed air source independent of the source of breathing air to produce the overpressure.
  • the protective suit according to the invention is equipped with at least one glove for receiving a hand of the operator.
  • the glove is formed from a thermally insulating glove material and provided with an electric and / or supplied with heating glove heater.
  • the glove may be integral with or separable from the body suit.
  • the glove material is preferably constructed like the jacket material.
  • the at least one glove comprises at least two, preferably at least three, more preferably five finger chambers, which are individually movable.
  • the at least one glove allows the gripping of objects such as e.g. Sample container in the refrigerator.
  • the interior of the at least one glove is dimensioned so that at least the fingers, preferably the entire hand, the operator in the glove is free to move.
  • the glove is provided with support members configured to receive or support part of the hand, wrist or forearm of the operator in the glove are.
  • the hand can be moved in the glove so that the fingers are in different positions relative to the glove. In a first position, the fingers may be located near the glove heater, preferably on the back of the glove. In a second position, the fingers may abut the handle sides of the finger parts to grip an object.
  • the finger chambers of the at least one glove are equipped with grip areas in which the glove material has a reduced thickness compared to the rest of the glove.
  • the gripping areas are arranged and dimensioned so that contact surfaces can be formed between adjacent fingers, such as when gripping an object with one hand without a glove.
  • the thermally insulating glove material is designed to be particularly thin in the grip areas in order to obtain a finger pressure sensor for the operator.
  • the gripping areas allow the operator to have a feeling for gripping an object.
  • the grip areas on the outside of the glove may have a profiled surface. This enables a secure gripping of even small objects, such as e.g. Sample tubes or the like.
  • the at least one glove is particularly preferably configured to be subjected to an internal pressure such that there is sufficient space inside the glove for a movement of fingers from a gripping position with contact of the fingers with the glove material, in particular the gripping areas, into a heating position without contact of the fingers with the glove material is formed.
  • the glove is in combination with the rest of the body suit or a cooling system, eg. B. inflatable with dry or warm air to form the internal pressure.
  • the at least one glove can be equipped according to a further variant of the invention with recordings for sample carrier.
  • the recordings for sample carriers are e.g. arranged on an outer side of the glove and serve the intermediate storage of a removed from a shelf device sample carrier before its transfer to another shelf device or a transport container.
  • the protective suit according to the invention has the following further advantages. Due to the internal respiratory air source with temperature control, the suit can be used in the cold room in air or in a pure nitrogen atmosphere. It is a good mobility of the limbs of the operator even at low temperatures, e.g. given to -190 ° C or below. In the protective suit, a physiological temperature of the operator can be maintained. The temperature may be regulated by the operator or automatically adjusted by a controller. The suit allows a quick on or off by the operator, which is beneficial for both the normal operation of the cooling system as well as for the accident. The at least one glove offers a good grip for the hands with a safe physiological tempering.
  • the Figures 1A and 1B schematically illustrate two embodiments of the protective suit 100 according to the invention.
  • the protective suit 100 each comprises a body suit 10 made of a jacket material 20 (see FIG FIGS. 2 to 4 ) with a helmet 40 (see FIG. 5 ), Shoes 50 (see FIG. 6 ), a back part 60 with a breathing air source (see FIG. 14 ), and gloves 70 (see FIGS. 7 to 11 ).
  • the protective suit 100 comprises a schematically shown heating device 30 (see FIGS. 2 to 4 ).
  • the body suit 10 includes two leg portions 11 for receiving the legs, a body portion 12 for receiving the trunk and two arm portions 13 for receiving the arms of the operator 1.
  • the overall composite of the jacket material 20 with a manhole and the coupling between body suit 10 and helmet 40 are gas-tight educated. They are particularly impermeable to moisture (water vapor) to to keep a cold room when entering by the operator 1 in the protective suit 100 ice and frost.
  • the jacket material 20 has a layer structure of a plurality of directly superposed cladding layers. Inflatable or evacuated intermediate layers are not provided in this case.
  • the materials of the cladding layers and the layer sequence are chosen so that the majority of the heat emitted by the heater 30 flows inwardly, while the cladding material 20 heats up to the outside so that it remains flexible even at low temperatures in the refrigerator.
  • the required surface temperature of the jacket material 20 does not necessarily have to be set above 0 ° C.
  • the protective suit 100 forms a pressure suit.
  • an increased internal pressure in the jacket material 20 and / or in the interior of the body suit 10 is set therein, so that the jacket material 20 bulges outward.
  • the jacket material 20 has compared to the embodiment according to FIG Figure 1A a greater wall thickness.
  • the jacket material 20 is rigid at least at low temperatures in the cooling space. Nevertheless to ensure the free movement of the operator 1 in the protective suit 100, the hinge portions 14 are provided.
  • a manhole for the operator 1 can be formed by an interruption of the jacket material 20 along an opening line 16.
  • a closure such as a bayonet closure, Velcro closure with elastic and sealing bands to open or close the manhole.
  • the manhole is provided by a two-piece construction of the body suit 10. Between the leg parts 11 and the body part 12, the jacket material 20 is interrupted. At the edges of the adjoining parts 11, 12 are rigid coupling rings 17 (dashed lines).
  • the coupling rings 17 are arranged for a gas and pressure-tight coupling of the parts 11, 12. For example, they form a bayonet closure with a sealing layer provided between the coupling rings 17.
  • the in the Figures 1A and 1B schematically shown heaters 30 include, for example, electrical heating layers or lines of a Schuffennikanks, as will be described in more detail below.
  • the parts of the heater are distributed in the body suit 10 and / or in the back 60. They are especially positioned in areas in which when used in the refrigerator relatively much heat flows out, such as on the leg and arm parts 11, 13.
  • electrical heating elements such as heating layers are provided.
  • the helmet 40 is attached to a coupling ring 18 at an upper end of the body suit 10 gas-tight and locked.
  • a hinge may be provided, on which the helmet 40 can be folded back in an unlocked state to facilitate the exit of the operator 1 from the protective suit 100.
  • the back part 60 On the back side of the body part 12 is the back part 60.
  • the back part 60 may be fixedly connected to the jacket material 20 or coupled to the body suit 10 via straps such as a backpack.
  • the breathing air source a part of the heater for heating the breathing air, a power source, in particular a battery, a control device, and possibly an additional compressed air source.
  • the back portion 60 is made of a thermally insulating material, e.g. coated carbon fabric, resin composite foam, glass wool composite material, expanded polystyrene formed to protect said components from hypothermia.
  • the shoes 50 and the gloves 70 may be permanently connected to the body suit 10. Alternatively, a separation of the shoes 50 and / or the gloves 70 from the body suit 10 is provided. In this case, the shoes 50 and the gloves 70 with coupling elements (see FIG. 7 ) to form a gas-tight and possibly pressure-tight connection with the body suit 10.
  • the front ends of the shoes 50 are mechanically reinforced and insensitive to contact with liquid nitrogen.
  • the shoes are 50 this made of plastic material or ceramic, as they are used in conventional cryogenics for cryogenic tanks.
  • Figure 1A further illustrates the optionally provided belt means 15.
  • the belt means 15 may be embedded in the jacket material 20 or disposed on the surface of the jacket material 20.
  • a tether 210 is fixed, with which the operator 1 can be secured in protective suit 100 or lifted in an accident situation from the refrigerator.
  • the use of the protective suit 100 according to Figure 1A takes place such that first the helmet 40 is folded back and the body part 12 is opened along the opening line 16.
  • the operator 1 enters the body suit 10.
  • the operator 1 normal clothes or a warming textile clothing (lined textiles), eg a lined headgear (hatched shown) wear.
  • the manhole is closed along the opening line 16 and the helmet 40 folded forward and closed on the coupling ring 18.
  • the source of breathing air is operated in the back part 60 in order to supply the operating person 1 with breathing air.
  • the operator in protective suit 100 is ready to enter a cold room.
  • the cooling space comprises, for example, a floor area, side walls and a ceiling area, wherein a cooling device for cooling the cooling space using liquid nitrogen is arranged at least in the floor area.
  • the side walls are typically formed closed (without a door opening). Access to the cold room is through an opening in the ceiling area.
  • a work platform is arranged, on which the operator in protective suit 100 moves can, for example, to carry out maintenance work or to receive or deposit sample containers.
  • FIG. 1B is provided accordingly that the operator 1 first enters the leg parts 11 of the body suit 10 and then the torso and arm parts 12, 13 and the helmet 40 touches down.
  • the protective suit 100 is closed gas-tight and pressure-tight on the coupling rings 17.
  • the source of breathing air in the back part 60 is put into operation to provide the operator 1 with breathing air.
  • connection to an external power source may be provided via a supply line 220, which is schematically illustrated in FIG FIG. 1B and with more details in FIG. 13 is shown.
  • FIGS. 2A and 2B show two variants of the jacket material 20, preferably in the embodiment of the protective suit 100 according to Figure 1A is provided.
  • the cladding material 20 comprises, from outside to inside, a gas-tight outer skin 21, a stabilizing layer 22, an insulating layer 23 with a heat reflecting film 24, a heating area 25, a storage layer 26 with an inner skin 27 and a textile layer 28.
  • the body surface (clothing surface) of FIG Operator 1 is designated by the reference numeral 2.
  • the outer skin 21 comprises a gas-tight composite material containing a fabric, eg, coated plastic nets, glass wool, carbon cloth, laminated film, and / or coated foam.
  • the thickness of the outer skin 21 is z. B. 0.5 mm to 3 mm.
  • the stabilization layer 22 is also a composite material into which a mechanically stable grid material, in which Eg from a plastic, is embedded.
  • the thickness of the stabilization layer 22 is, for example, 0.1 mm to 2 mm.
  • the insulating layer 23, for example, with a thickness of 3 mm to 10 mm is for example made of polyurethane foam, polyethylene foam, cork, glass foam granules, airgel, vacuum insulation panels, mineral wool, wherein on the inside of the insulating layer 23, the heat reflective film 24 comprising a plastic film coated with aluminum, is arranged.
  • the heating region 25 comprises heating layers which are uniformly distributed in the jacket material 20, arranged in layers. The heating layers are supplied via electrical lines (not shown) connected to the power source in the back 60 (see FIG. 1 ) and / or are connected via the supply line 220 to an external power source.
  • the storage layer 26 comprises a material having a high heat capacity, such as paraffin, wax, magnesium composite, graphite, foam polystyrene, wood components having a specific heat capacity greater than 1 kJ / kg K. It has a thickness of, for example, 2 mm to 10 mm.
  • the storage layer 26 serves as a heat buffer and for distributing the heat.
  • the inner skin 27 has a mechanical stabilizing function.
  • the textile layer 28 consists of a textile fabric or felt in order to make the inner contact between the operator 1 and the jacket material 20 as comfortable as possible.
  • the body surface 2 of the operator 1 is in direct contact with the inside of the lateral surface 20.
  • the body surface 2 is directly warmed by the jacket material 20.
  • the breathing air is supplied with a pressure in the body suit 10, which is selected above the external atmospheric pressure in the cooling space.
  • the jacket material 20 is inflated so that between the inside of the jacket material 20 and the body surface 2 of the operator 1, a distance 3 (eg a few centimeters) is formed.
  • the generation of the gap 3 between the operator 1 and the cladding material 20 has the advantage of heat buffering and uniform distribution of heat inside the body suit 10.
  • FIGS. 3A to 3C illustrate a modified variant of the jacket material 20 and the protective suit 100, in which the heating device is formed by a heating medium circuit 33 with lines 34, 35.
  • the lines 34, 35 form at least one closed loop.
  • the heating medium circuit 33 comprises a plurality of conduits 34, 35 for a gaseous or liquid heating means. If the heating medium is a liquid, eg water, alcohol or a fluid oil, advantages result from the high heat capacity of the heating medium.
  • a disadvantage may be the relatively high weight of the protective suit 100 and the Havariegefahr at a leakage of Schuschniks.
  • the body suit 10 consists of several parts (see FIG. 1B ), the lines between the parts in the assembled state of the body suit 10 are coupled. In order to prevent leakage of the lines in the separated state of the parts of the body suit 10, valves are arranged in the lines, which prevent leakage of the liquid.
  • the jacket material 20 is a multilayer with a gas-tight outer skin 21, a stabilizing layer 22, an insulating layer 23, which carries a heat reflection film 24, a Heating region 25, in which the lines 34, 35 are arranged, an inner skin 27 and a textile layer 28 constructed, as above with reference to FIG. 2A has been described.
  • the lines 34, 35 are arranged distributed in the jacket material 20.
  • the lines 34, 35 extend annularly around the extremities of the operator 1, while in the body part 12, the lines 34, 35 extend annularly around the trunk of the operator 1.
  • It may be provided a plurality of ring lines, for example, to heat the leg, torso and arm parts 11, 12 and 13 separately.
  • the at least one ring line is provided with a heating medium heating in the back part 60 (see FIG. 1 ) or connected to an external heater.
  • the lines 34, 35 are placed so that the supply with the warm heating means from the Schuffenracung (line 34) alternates with the return to the cooled heating means (line 35).
  • the feeds with the warm heating means (line 34) are arranged in an inner layer of the heating area 25, while the recirculations with the cooled heating means (line 35) are arranged in an outer layer of the heating area 25.
  • the SchuffenSullivanung supplies the heating means with a temperature of z. B. 15 ° C to 30 ° C.
  • FIG. 3C further illustrates a star shaped manifold 36 for exposing the leg, torso and arm portions 11, 12 and 13 to separate flows of heating means.
  • the jacket material 20 comprises an outer shell 20.1 and an inner shell 20.2. It is similar to the layer sequence in FIG. 2A with an outer skin 21, a stabilizing layer 22 and a first insulating layer 23. 1, provided with a heat reflection foil 24. Furthermore, a second insulating layer 23. 2, likewise provided with a heat-reflecting film 24. 2, and a textile layer 28 are provided on the inwardly-facing side of the jacket material 20.
  • the materials and dimensions of the cladding layers may be selected as described with reference to FIG FIG. 2 is described.
  • FIG. 4A Between the first and second insulation layers 23.1, 23.2 there is a gas-filled ( FIG. 4A ) or an evacuated ( FIG. 4B ) Interlayer 29.
  • the inner surfaces of the gas-filled intermediate layer 29.1 are mechanically stabilized by stabilizing ribs 29.1.
  • the heating region 25 On the outwardly facing inner surface of the intermediate layer 29, the heating region 25 is arranged with heating layers for electrical resistance heating of the jacket material 20.
  • the intermediate layer 29 is not filled with gas, but with evacuated components 29.3 (evacuated plastic bricks) formed.
  • the heating layer 25 is provided on the inner surface of the intermediate layer 29.
  • Both variants of the FIGS. 4A and 4B are characterized by a reduced flexibility or complete rigidity of the cladding material 20. In this case, the mobility of the operator 1 in the protective suit 100 through the hinge portions 14 (see FIG. 1B ) guaranteed.
  • FIGS. 5A and 5B illustrate the helmet 40 of the protective suit 100 according to the invention in a schematic front view ( FIG. 5A ) and cross-sectional side view ( FIG. 5B ).
  • the helmet 40 comprises a truncated, double-walled ball of a transparent plastic material, for example copolymer (elastomers), cellulose acetate, acrylonitrile, polystyrene.
  • the ball is formed by an outer wall 40. 1 and an inner wall 40. 2, which are connected to the coupling ring 18.
  • the space between the outer and inner walls 40.1, 40.2 is evacuated to reduce the heat conduction from the interior of the helmet 40 to the outside.
  • the front side of the helmet 40 which faces in the direction of the operator 1, forms a windshield 41, which is equipped with a glass heater 41.1.
  • the inner surface of the inner wall 40.2 is mirrored, so that heat radiation inside the helmet 40 is reflected inward.
  • Warmed breathing air from the breathing air source in the back part 60 is fed into the helmet 40 via a thermally insulated supply line 45. If a breathing circuit is provided, the breathing can also be via a mouthpiece with valves (not shown), so that advantageously fogging of the inner surface of the helmet 40 is avoided.
  • a shock protection 40.3 is arranged, the protection against mechanical shocks and the inclusion of functional components, such as a lighting device 40.4, eg a white light LED, an antenna 40.5 for wireless communication and / or a pressure relief valve 42nd serves.
  • a lighting device 40.4 eg a white light LED
  • an antenna 40.5 for wireless communication and / or a pressure relief valve 42nd serves.
  • the pressure relief valve 42 is provided with an emergency opening element 42.1. This can be operated in an emergency situation from the outside, eg to air in to let in the interior of the helmet 40.
  • a window (not shown) may be provided which can be opened from the outside.
  • the helmet 40 is further equipped with an emergency supply device 44.
  • the emergency supply device 44 is arranged on the back (occipital region) of the helmet 40. It contains a compressed air cylinder 44.1, a heating cartridge 44.2 and a valve-controlled connection line 44.3.
  • the emergency supply device 44 can be actuated to direct tempered breathing air via the connecting line 44.3 directly into the interior of the helmet 40.
  • the breathing air reserve provided with the compressed air cylinder 44.1 suffices for an emergency supply of eg 5 minutes. If an emergency supply for a long time via an external emergency supply device is required, then the supply of breathing air from the external emergency supply device via a port 44.4, which is connected to the connecting line 44.3.
  • helmet 40 Other functional elements of the helmet 40 include a microphone 40.6, ear speaker 40.7, an emergency button 40.8, which can be actuated by a movement of the head of the operator 1, and a rearview mirror 40.9.
  • the Figures 6A and 6B show the shoe 50 of the body suit 10 according to the invention (see FIG. 1 ) in a schematic longitudinal sectional view of the front shoe area ( FIG. 6A ) and reduced in schematic side sectional view ( FIG. 6B ).
  • the design of the shoes 50 is of particular importance to the safety of the operator since the shoes 50 come into direct contact with the coldest surfaces in a cold room.
  • At the bottom of a cold room is located eg in a thermally insulated pan an open nitrogen lake, which is covered with a grid. On the grid, the operator 1 moves in the protective suit 100.
  • the temperature at the bottom is almost equal to the temperature of the liquid nitrogen, ie at about -195 ° C.
  • the shoes 50 are configured to ensure safe protection of the operator's foot 4, even when liquid nitrogen is sprayed up from the ground or is placed in the liquid nitrogen with the shoe 50 in an emergency situation.
  • the nitrogen lake of a cooler of the cold room in the thermally insulated pan typically has a depth no greater than 5 cm.
  • the shoe 50 is therefore equipped with a platform sole 51 and designed so that the sole of the foot 5 of the operator 1 has a distance h above the ground which is greater than the depth of the nitrogen lake of the cooling device.
  • the distance h is e.g. greater than 5 cm, in particular greater than 6 cm.
  • the bottom of the shoe 50 is formed so that the shoe 50 is impermeable to liquid nitrogen.
  • the platform sole 51 and the upper shoe area 52 are therefore made of a low temperature resistant plastic material, e.g. PTFE, ceramic, glass composite, carbon laminate formed.
  • a protective layer 53 against mechanical injuries e.g. consists of a ceramic, a metal grid or a plastic grid.
  • the platform sole 51 has a sole profile 51.1 (see FIG. 6A ), which improves the tread resistance and at the same time reduces the contact surface with the ground.
  • evacuated cavities 51.2 are provided in the platform sole.
  • a heat reflection layer 54 e.g. an aluminum-coated plastic film, and an insulating layer 55, e.g. made of polymer foam, arranged inside the shoe 50.
  • an electrical heating layer 37 (shown dotted) that extends on the underside of the foot 4 and optionally also on the sides or top of the foot 4.
  • the insulating layer 55 includes a gas-filled interior 56 of the shoe 5 for receiving the foot 4.
  • the interior 56 is formed significantly larger than a human footwell would need. This allows the operator to additionally wear lined textiles and the shoe 50 can be used by people with different foot size.
  • 50 flexible adjustment elements 58 are arranged in the shaft 57 of the shoe. The adjustment elements 58 give the upper part of the foot 4 and / or the lower leg 6 sufficient support to be able to transmit the required force to the shoe 50 during movement.
  • the insulating layer 55 is transformed into a shoe insert 55.1 made of an elastic and heat-reflecting material, e.g. metal coated plastic films, PTFE films, felt layers, foam layers, glass laminates.
  • the shoe insert 55.1 is used for the thermal insulation of the foot 4 and the improvement of the fit of the shoe 50th
  • the use of the hands is of particular importance to the operator who is in the protective suit in the cold room, for example during maintenance work or when taking sample containers from a shelf.
  • the gloves 70 see FIG. 1 .
  • the operator comes into direct contact with cold surfaces.
  • Sample containers with small dimensions, such as sample tubes with a size of a few centimeters, must be securely gripped and held with the gloves.
  • a mobility of the fingers is required, at the same time a heat transfer from the fingers to the sample container is to be minimized.
  • the glove is adapted for use in conjunction with the protective suit, or alternatively with a refrigeration system (eg, cool box or freezer) under normal pressure at temperatures down to -200 ° C.
  • a refrigeration system eg, cool box or freezer
  • the glove can be connected to supply and control systems, which depend on the design of the glove heater (in particular electrical resistance heating or Schuffenniklauf), the design of the glove material (especially with or without deployment possibility under the action of compressed air) and use with a protective suit or a cooling system comprising a power source or a heating medium source, a compressed air source and a sensor device.
  • the compressed air source is connected to a part of the heater for air heating and air drying and with a flow control for adjusting the effluent from the glove exhaust air.
  • the sensor device preferably comprises temperature sensors in each finger chamber and in the back of the hand and the palm of the glove. Furthermore, sensors for detecting the air pressure and the air flow in the glove may be provided. The sensor device is connected to an alarm device to signal unwanted operating conditions in the glove can.
  • the heater is configured as described above with respect to the heater in the body suit and will be discussed in further detail below. The features mentioned are met by gloves 70, the in preferred embodiments in the FIGS. 7 to 11 are shown.
  • the glove 70 is made with a plurality of finger chambers 73 made of a thermally insulating glove material 71 which forms an internal space for receiving the hand of the operator.
  • the glove material 71 is generally multi-layered and constructed like the shell material of the body suit, optionally without the storage layer.
  • the thermally insulating glove material 71 comprises, from outside to inside, a gas-impermeable, cold-resistant outer skin 71.1 and at least one insulating layer 71.2.
  • the outer skin 71.1 comprises a composite material, such as a tissue bonded with a binder.
  • the insulation layer 71.2 consists, for example, of metal-coated plastic material PTFE film, carbon composite material, felt fabric, paraffin or wax composite material and laminates.
  • a heat reflection film for reflecting heat radiation is disposed inside the glove 70.
  • the thermal insulating glove material 71 can have a simplified structure and a reduced insulating ability. However, this is not critical for the practical use of the protective suit according to the invention, since the gloves 70 form only a small heat source compared to the remaining surface of the protective suit.
  • heating layers (heating foils) 77 are disposed for electrical resistance heating.
  • the heating layers 77 are arranged so that heat is conducted in particular into the environment of the forearm, the palms and the fingers becomes. It can be provided that in the front part of the gripper fingers (thumb, forefinger, middle finger) only the top of the gloves 70 (side facing the back of the hand) is heated.
  • Gripping areas 74 are provided on the gripping surfaces of the finger chambers 73 for the gripping fingers, in which the thermally insulating glove material 71 has a reduced thickness of less than 1 cm, in particular less than 0.5 cm, compared with the rest of the glove 70.
  • the grip regions 74 advantageously allow a finger pressure sensor system to be utilized in spite of the low temperature and to give the operator a feeling for the grip.
  • the outer surfaces of the gripping regions 74 are covered with a profiled, flexible material which has advantages for gripping the sample containers. The profiling of the gripping regions 74 reduces the risk of slipping out of sample containers.
  • the thermally insulating glove material 71 is heated from the inside so that the outer surface (outer skin 71.1) of the thermally insulating glove material 71 remains flexible and flexible.
  • the temperature of the outer skin 71.1 is set, for example, in a range of -10 ° C to -60 ° C.
  • the embodiments of the gloves 70 in the FIGS. 7A and 7B are illustrated with a schematically shown coupling element 76, which is used to connect the glove 70 with the arm part 13 of the body suit 10 (see FIG. 1 ) is set up.
  • the coupling elements 76 are connected to an outer wall of the cooling system so that an operator's hands from the outside in the gloves can be stuck. Furthermore, in this case, a connection is made to an external power source for supplying the electric glove heater via the coupling elements 76.
  • the gloves 70 are separable from the body suit 10.
  • gloves can thus be replaced depending on the specific requirements of the application in the cold room and the size of the hand of the operator.
  • receptacles 75 for sample containers such as sample tubes are provided.
  • the receptacles 75 are adapted to the shape of the sample container. For example, quivers are provided for receiving sample tubes (so-called "straws"), while for bag-shaped sample containers as a receptacle 75 a box or a hitch is provided.
  • the receptacles 75 have the advantage that sample containers can be stored temporarily, whereby they do not have to be held between the fingers and thus remain cool. Notwithstanding the illustrations in FIG. 7 However, it is possible that the gloves 70 are firmly connected to the arm parts 13 of the body suit 10.
  • FIG. 7B shows an embodiment in which the glove 70 in combination with the pressure suit according to FIG. 1B is used.
  • 76 are in the coupling element lines for incoming (76.1) and outgoing (76.2) gases.
  • the glove 70 is heated and inflated by the inflowing warm gas (temperature eg 25 ° C to 35 ° C).
  • heating layers may be provided, as with reference to FIG. 7A are described. Due to the pressure in the glove 70 is formed between the hand 6 of the operator and the inner surface of the glove 70, a gas-filled space 78 in which the hand 6 is movable.
  • retaining elements 72 are provided in order to To support a part of the hand 6 or the forearm of the operator in the glove 70.
  • Retaining elements 72 include, for example, one or more rings, which surround the glove 70 in the region of the wrist.
  • the holding elements 72 allow the hand 6 to be slipped in and out and at the same time give the hand 6 enough grip to be able to transmit forces with the fingers when gripping.
  • a particular advantage of the glove 70 according to FIG. 7B is that in the case of hypothermia of the fingertips or other emergency situation, the arm of the operator can be withdrawn and a fist can be formed (in FIG. 7B shown in dashed lines). In this situation, rapid warming of supercooled limbs is possible.
  • the conduit for the incoming (76.1) gas may, by derogation of the illustration, preferably be formed so that the gas at the outermost end of the glove 70 between the fingertip and the end of the finger chambers 73 flows into the glove 70 and then along the fingers over the hand flows in the direction of the wrist in order to achieve rapid warming of the fingers and hand and a distance between the fingers and the glove filled with flowing gas. It is advantageous if, in addition to the pressure, the flow of the gas is maintained constant, especially in its flow direction.
  • the glove 70 may be provided, for example, as a three-fingered glove or as a five-fingered glove, as shown schematically in FIG Figures 8A and 8B is shown.
  • Figure 8A are each a finger chamber 73 and the remaining fingers of the operator another finger chamber 73 are provided for the thumb and forefinger of the operator.
  • a part of the heater 30 is arranged in each of the finger chambers 73.
  • the heater comprises 30 a heating medium circuit with a conduit 34 for supplying the heated heating means and a line 35 for returning the cooled heating medium, which are split at a distributor 36 on three loops.
  • FIG. 8B five finger chambers are respectively provided for receiving one finger each of the operator.
  • the lines 34, 35 of the heater 30 are split at the manifold 36 on five loops, each extending on the back of the hand of the glove 70.
  • the Figures 8A and 8B further illustrate schematically a pressure line connection 76.3 with a line for supplying a compressed gas, eg compressed air, in the glove 70 and a line for the discharge of the compressed gas.
  • the overpressure creates between the hand of the operator and the inner surface of the glove 70 a gas-filled space in which the hand of the operator is movable (see FIG. 7B ).
  • the pressure line connection 76.3 is through the coupling element 76 (see FIG. 7B ) and is connected to a compressed gas source.
  • FIG. 8C schematically illustrates that also the glove 70 may be provided with a hinge portion 14 which in this case forms a gripping fold on the thumb of the glove 70.
  • the grip fold is, for example, constructed as below with reference to FIG. 12 is explained.
  • the glove material may be modified in the area of the thumb crease to ensure the flexibility of the glove. For example, in the area of the thumb crease an interruption in the layer composite of the glove material, for example a gap or a region with a reduced thickness of the insulation layer 71.1 (see FIG. 7A ) be provided.
  • FIGS. 9 and 10 illustrate further details of the gripping regions 74 on the finger chambers of the glove 70 FIG. 9
  • the grip portions 74 are positioned on the portions of the finger chambers for receiving the thumb and the index finger in the area of the finger berries of the hand inserted into the glove 70.
  • the grip portions 74 are arranged so as to be opposed to each other in the case of a glove 70 closing to a grip.
  • the grip regions 74 are characterized by a reduced thickness of the glove material in comparison to the rest of the glove. As a result, the sense of touch for the operator is maintained in the grip areas 74.
  • a secure holding example of sample containers is ensured because the holding force controlled manually and accidental slipping of the sample container can be avoided.
  • the grip areas 74 are a particularly important feature of the gloves.
  • the finger cavities are formed on the inside of the finger with the thinner, profiled material for the delicate gripping of even small objects.
  • the grip portions 74 when in contact with an external solid which is very cold, cause the operator's fingers to cool in the contact area.
  • the layers are formed so that the contact even at a temperature of the solid -200 ° C can easily exist for minutes. After the release of a held object, the heating of the cooled finger areas of the operator takes place.
  • This heating is inventively achieved in that after release of the handle by the internal pressure in the glove, the finger berries are no longer in contact with the glove material, so that they are warmly flowed around by the inner medium in the glove and heat up quickly.
  • the internal pressure in the glove is chosen so that when gripping no great mechanical resistance must be overcome in order to bring the finger surface with the jacket material in contact.
  • This glove finger principle is particularly advantageous for repeated gripping and depositing of articles used in cryobanks.
  • FIG. 10 illustrates a variant of the glove 70 in which the glove heater is formed by a heating medium circuit.
  • the according to FIG. 10 by way of example on the index finger illustrated grip area 74 is enlarged in the schematic sectional view of the glove material in FIG. 11 shown.
  • FIG. 11 shows a grip portion 74 in the glove material, which is formed in this example with a gas-tight outer skin 71.3, a stabilization layer 71.4, an insulating layer 71.5 with a heat reflective film 71.6, a heating area 25, a storage layer 71.7 with an inner skin 71.8 and a textile layer 71.9.
  • To provide an effective gripping region 74 it is sufficient to fill a gap in the storage layer 71.7 in the glove material with a lateral extent of, for example, 10%. B. release 2 cm.
  • FIG. 12A includes a hinge portion 14, a movable member part 14.1.
  • the link part 14.1 is located between rigid, tubular components 13.1, 13.2 of the arm part.
  • the link part 14.1 is incorporated in the glove material.
  • the hinge portion 14 has the structure of a bellows connection. Relative to each other movable ribs 14.2 are connected to each other via a flexible composite material 14.3.
  • the composite material is composed from outside to inside of a gas-tight, mechanically robust outer skin 14.4, a mechanical coupling layer 14.5, a heating area 25 and an insulating layer 14.6.
  • the mechanical coupling layer 14.5 includes, for example, a grid material, by which the ribs 14.2 are connected to each other.
  • the heating area 25 is provided for electrical resistance heating of the hinge area 14. This allows the entire articulation area to be mobile even at outdoor temperatures as low as -200 ° C. The increased heat losses at the joint areas can be tolerated because of their small size compared to the entire surface of the body suit and because of the importance of their function.
  • Other joint regions 14 provided on the body suit 10, such as leg or hip joints or the grip folds of the glove, are similar to those in FIG FIG. 12 shown constructed.
  • FIG. 13 schematically illustrated by the example of an electrical line.
  • the supply lines are preferably formed stretchable. This is due to the spiral shape ( FIG. 13A ) reached.
  • the spiral supply line is elastic and adaptable in length to the specific conditions of use in the cold room.
  • the supply line 220 is electrically heated, as in FIG. 13B is shown schematically.
  • a heating layer 223 with a heat reflection foil (not shown) is disposed inside the supply line 220.
  • a thermal insulation layer 224 On the outside of the heating layer 223 is a thermal insulation layer 224 which is surrounded by a flexible, liquid nitrogen-resistant shell layer 225.
  • the heating layer 223 is supplied with electric current such that the temperature of the supply line 220 is increased up to the surface thereof.
  • the heating of the supply line 220 is preferably carried out with a power source in the back part 60 (see FIG. 1 ).
  • a power source in the back part 60 (see FIG. 1 ).
  • this ensures a constant operational readiness of the flexible supply line 220 in the cold room.
  • Other lines, such as pressure lines, liquid lines or vacuum lines are the same as in FIG. 13B shown constructed.
  • FIG. 14 shows an overview of the supply and control systems for a protective suit 100 according to the invention, with which an operator in a cold room under normal pressure at temperatures up to z. B. -200 ° C can work.
  • an operating unit 80 On the protective suit 100 is an operating unit 80, can be submitted to the signals and settings on parts of the protective suit 100 can be made.
  • the supply and control systems are shown grouped around the protective suit 100, wherein lines represent schematically connections (signal connections and / or material connections) with the protective suit 100.
  • the supply and control systems preferably provided for operation of the protective suit 100 include a Power supply 61 (battery), the heater 30 and the Atemluftquelle 62.
  • the power supply 61 is provided with thermal insulation in the back part 60 (see FIG. 1 ) and with a capacity sufficient for the heating and operation of the suit for a period of 15 to 60 minutes. It is a coupling via a supply line 220 to an external power supply, eg in the refrigerator or an adjacent operating room, provided. This allows the internal power supply 61 to be conserved or recharged, or to provide additional power for special operations.
  • the heating device 30 comprises the heating elements integrated in the protective suit, which are operated electrically or with a heating medium, and a heating control.
  • the breathing air source 62 is also provided with thermal insulation in the back portion 60 (see FIG. 1 ) arranged. Both the breathing air source 62 as such as breathing air lines and valves are thermally insulated and possibly heated. Preferably, the respiratory air source 62 is based on a compressed air system or on a circulatory system with CO 2 removal and oxygen addition. The respiratory air is tempered with a portion of the heater 30 and possibly using sensors in protective suit 100 and a control loop.
  • the protective suit 100 as a pressure suit ( FIG. 1B ) is constructed, there is additionally a compressed air source 63 in the back part 60 (see FIG. 1 ). From the compressed air source 63 are inflatable intermediate layers 29 for thermal insulation in the jacket material 20 (see FIG. 4A ) is exposed to air. Furthermore, the compressed air source 63 may be connected to a heating medium circuit. In addition, means 65 for pressurizing or pumping in a liquid circuit or for vacuum generation may be provided.
  • a radio system is connected to an antenna 40.5 for communication with the outside and other persons in the refrigerator, as well as a lighting device 40.4, a camera device 40.10 and a microphone 40.6 for a radio communication.
  • the suit has a sensor device 90 with external sensors 91 (temperature, oxygen content) and internal sensors 92 (temperature, pressure, oxygen content, remaining time, alarms, audible announcements) in various places (extremities, body area, head).
  • sensors 91 temperature, oxygen content
  • sensors 92 temperature, pressure, oxygen content, remaining time, alarms, audible announcements
  • the shoes and there the soles of the shoes are equipped with temperature sensors.
  • an alarm device 64 When an impermissible deviation from a normal state is detected with the sensor device 90, an alarm device 64 gives an alarm (alarm signals or messages) to the operator and to the outside.
  • the alarm can z. B. displayed in the windshield 41 of the helmet 40 or reflected in this and / or transmitted acoustically to the operator.
  • the operator can automatically receive instructions for further behavior, e.g. Immediate leaving of the cold room, switching on the emergency power supply or coupling to an external energy or compressed gas supply.
  • an emergency supply device 44 is provided, which in FIG. 14 schematically illustrated and z. B. in the back of the head on the helmet 40 is integrated (see FIG. 5B ).
  • the emergency supply device 44 may alternatively be mounted elsewhere on the suit (eg on a belt).
  • the system contains in thermal insulation and its own tempering a Atemluftnotzer for about 5 minutes, and an electrical supply for the radiotelephone, the lighting and heating of the main tightening elements (eg the joints, feet). Furthermore, instructions are stored in predetermined programs for the various cases, which are communicated via radio to the outside and speech as well as speakers in the helmet of the disabled person.
  • the disabled person can try to save alone in the time spent announcing or being displayed, or persons within the cooling chamber and from outside can approach or rescue systems can be activated.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
EP12702764.7A 2011-02-02 2012-02-01 Schutzanzug zur verwendung in einem kühlraum Active EP2670265B1 (de)

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DE102011010119A DE102011010119A1 (de) 2011-02-02 2011-02-02 Schutzanzug zur Verwendung in einem Kühlraum
PCT/EP2012/000452 WO2012104081A2 (de) 2011-02-02 2012-02-01 Schutzanzug zur verwendung in einem kühlraum

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DE102011010121B4 (de) * 2011-02-02 2016-09-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Begehbare Kühlanlage, insbesondere zur Kryokonservierung biologischer Proben, und Verfahren zu deren Betrieb
ES2571442B9 (es) * 2014-11-25 2017-12-26 Mat Product & Technology, S.L. Prenda transpirable
JP6325485B2 (ja) * 2015-05-13 2018-05-16 学校法人 神野学園 蛇腹構造
JP2019527166A (ja) * 2016-07-07 2019-09-26 セサール ヴィグノラ，マリオ 高い機能及び断熱を有する難破船用のサルベージスーツ
US10568766B2 (en) * 2017-12-07 2020-02-25 David Benton Mechanically heated/cooled air system for welding helmet
KR101979204B1 (ko) * 2018-02-22 2019-05-15 김길훈 구명 조끼
CA3162887A1 (en) * 2019-11-26 2021-06-03 Ronie Reuben Composite down insulated assembly for controlled energy transfer from an integral thermal source
US20210315312A1 (en) * 2020-04-08 2021-10-14 Hamilton Sundstrand Corporation Speaker integrated into helmet
US20210315313A1 (en) * 2020-04-08 2021-10-14 Hamilton Sundstrand Corporation Microphone integrated into helmet
CN114616713A (zh) * 2020-07-30 2022-06-10 谷歌有限责任公司 优化电子设备中电池温度的设备、系统和方法
CN112206432B (zh) * 2020-09-27 2021-08-27 金琦曼 一种透明透气的全覆盖式防护头罩

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EP2670265A2 (de) 2013-12-11
JP2014504686A (ja) 2014-02-24
WO2012104081A2 (de) 2012-08-09
US20130305438A1 (en) 2013-11-21
CN103747696B (zh) 2016-08-10
WO2012104081A3 (de) 2013-01-10
CN103747696A (zh) 2014-04-23
US9381385B2 (en) 2016-07-05
WO2012104081A8 (de) 2012-11-08
JP6200329B2 (ja) 2017-09-20
DE102011010119A1 (de) 2012-08-02

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