Abstract: A compact, lightweight integrated environmental control (IEC) system for a helicopter incorporates in operative combination an environmental control system (ECS) and a nuclear/biological/chemical life support system (NBC LSS). The IEC system includes a refrigerant subsystem, a regenerative heat exchange apparatus, a decontamination subsystem, and an airflow distribution network, and is operative to provide super-cooled, super-dry, decontaminated airflow, in seriatim, directly to left and right mission equipment package bays and the cockpit for cooling of avionics/electronic modules and crew comfort. The IEC system is further operative to directly provide cooled, super-dry, decontaminated airflow for cooling of avionics/electronic modules of the mid mission equipment package bay and for over pressurizing the left and right mission equipment package bays to preclude contaminant infiltration thereof.

Abstract: A desiccant air conditioning system (10) is provided for a passenger compartment (28) of a vehicle. Ambient air, to be eventually conditioned, passes through desiccant material maintained in a desiccant chamber (14) where it loses a portion of its moisture content while its temperature rises because of the release of the heat of vapor condensation. Subsequently, this hot, dry air is passed through a heat exchanger (20) where it is cooled down to a temperature close to the ambient. This very dry, cool air is then humidified by a humidifier (24), becoming cool, moist air, that is introduced into the passenger compartment of the vehicle. Exhaust air (30) from the passenger compartment is further humidified by a humidifier (32), so as to cool it. This cooled, humidified air is then passed through the heat exchanger (20) to cool the hot, dry incoming air.

Abstract: An air conditioning system (10), being powered by a supply of compressed air, includes an air cycle machine (12) and incorporates a pair of regenerable bed filters (44,46). In operation, the filters are alternately cycled in and out of service with one of the filters receiving pressurized air for filtration from the air cycle machine compressor (30), while a backflow of purge air is passed through the other filter to remove accumulated contaminants from the bed thereof, thereby regenerating the filter. The purge air comprises conditioned air from the air cycle machine turbine (32). The contaminant laden purge air discharging from the filter being cleansed, is passed to a subatmospheric pressure region (77) in the ram air duct (20) upstream of the air cycle machine fan (28) and downstream of the heat exchangers (22, 24) for venting therefrom to the atmosphere via the fan (28).

Abstract: A cryogenic shipping and storage system includes a cryogenic dewar having a top opening, one or more specimen holders suspended within the dewar, a top housing secured to dewar opening and forming a central opening corresponding with the top dewar opening to allow insertion and withdrawal of the one or more specimen holders, a plug adapted to engage the one or more specimen holders and close the central opening of the top housing, a top cover hingedly carried by the top housing over the central opening, and indicia provided on the top housing to identify each of the one or more specimen holders suspended within the dewar. The top housing includes means for detachably receiving and maintaining the spaced relationship of the one or more specimen holders suspended within the cryogenic dewar.

Abstract: A room air environment conditioner for conditioning and improving the air quality in a room. The apparatus includes an enclosed cabinet containing growing plants on trays filled with water to facilitate sprouting and growing of said plants without dirt or sand. The cabinet is separated into light and dark portions to permit regulated growth of said plants. The trays holding the plants have perforated covers upon which are placed a porous material to hold the seeds and the trays are first placed in the dark portion of the cabinet. Once the seeds sprout with roots they are transferred to the lighted portion of the cabinet to grow and generate oxygen. There is an air ionizer located within the cabinet and also a holder containing various chemicals or powders with curative components. A fan blows air through a wetted filter and the cabinet thus changing the oxygen and ionization content of the air in the room, cooling the air and introducing curative powders into the room.

Abstract: HVAC systems having interior surfaces exposed to moist air are protected against fungal growth by coating the interior surfaces with an adherent flexible polymer film which includes a fungicidal composition in an amount effective to provide a zone of inhibition against multiple fungal species of at least 1 mm, and which employs active fungicidal ingredients which are substantially non-volatile and non-soluble in water.

Abstract: A central air conditioning unit with a blower and feed duct is provided with a filter unit between the blower and the air outlet into the space applied with the conditioned air. The filter unit has both a sorption filter and a suspended filter and is constructed and arranged to form a sound barrier, i.e. a sound-damping or sound-blocking system.

Abstract: A method of freezing a standard donor unit of red blood cells such that it can be stored for long periods and subsequently recovered in a form pure enough for transfusion purposes involves centrifuging a blood unit to remove plasma and platelets and to provide a Packed Cell Volume of the red blood cells of not less than 90%, adding the red blood cells to a freezing bag, containing HES solution such that the ratio of HES/red blood cell freezing unit is not more than 7% (preferably 6%) w/v, positioning the freezing bag in a freezing frame adapted to maintain the thickness of the contents of the bag constant, and placing the frame without shaking, into liquid nitrogen.

Abstract: In a method for preventing bacterial growth in a refrigerating or freezing plant for food, the plant (1 ) includes a substantially closed housing (2) and, arranged therein, a device (3) for refrigerating food in this housing, and has an operating cycle including a work period during which the refrigerating device (3) is active, and a rest period during which the refrigerating device (3) is inactive and the plant can be cleaned. The cleaning includes raising the temperature in the plant above a temperature requisite for killing bacteria. Furthermore, the air pressure in the plant is maintained higher than the ambient pressure, at least during the entire rest period, by supplying air free from bacteria. The plant (1) includes heaters for raising the temperature therein during a rest period above a temperature requisite for killing bacteria, and air supply devices (7, 8) for supplying the air free from bacteria.

Abstract: A deodorizing device is provided in a refrigerator. This device includes a tubular heater and a water droplet prevention member provided above the heater. The deodorizing heater is provided in an air circulation path and below a cooling coil. On the outer periphery of the heating portion of the heater, there is provided a catalyst coat layer for absorbing odor components. The water droplet prevention member is disposed immediately above the tubular heater so as to cover the heater to prevent water droplets falling from the cooling coil, defrosted by the heater, from falling thereon. When the heater is heated, the catalyst coat layer is heated directly by the heater, and the odor components having been absorbed therein are efficiently decomposed. The heat from the heater heats the cooling coil by convection for effecting defrosting thereof.

Abstract: An automatic self-cleaning self-sterilizing ice making machine is having a coolant/refrigerant system, a water-ice system, a cleaning/sterilizing system and a microprocessor operated control system interconnecting the above systems. Methods for automatically cleaning ice maker water-ice systems and establishing safeguards and monitoring of system readiness and operation are also provided.

Abstract: An air quality and temperature responsive air conditioning system wherein modules are employed to precondition the air for humidity control, to heat and cool the air, and to bypass the supply air in excess of the demand of a multiplicity of comfort zones with thermostat control, and featuring a bypass module characterized by parallel ducting, one ducting which is restricted by a damper responsive to a supply air back pressure sensor, and one ducting which is opened by a damper responsive to an air quality sensor.

Abstract: An inner cooled compartment for receiving articles to be preserved has a vacuum environment in it for the prolonged preservation of articles. Door closures for the compartment is associated with vacuum release valves to allow the closures to open. The inner compartment to be subject to vacuum may comprise a refrigerator area of a conventional household refrigerator or the freezer compartment thereof, or both. The vacuum storage hereof also has particular application to the vegetable tray compartment of a refrigerator and may contain a self-contained vacuum producing flexible container. The vacuum pump may be combined with the refrigerator operating structure or may be a separate outside mounted unit connected by a conduit into the compartments.

Abstract: A method for long range transcontinental or transoceanic transport of fresh chilled meat. The method concerns a transport of vacuum packaged chilled beef, pork or lamb meat or poultry or fish in refrigerated containers wherein one part of the container is filled with the frozen meat and the fresh non-frozen but chilled meat is placed in the close proximity of the frozen meat and insulated with foamed polystyrene laminated on both sides with sheets of insulated material. The chilled meat is stored in controlled atmosphere containing less then 1% of oxygen.

Abstract: A thermal cycling apparatus having an upper heat chamber and a lower cold chamber positioned vertically beneath the upper heat chamber and vertically coaxial therewith whereby a material to the thermal cycle tested can be transferred between the upper heat chamber and the lower cold chamber. An externally operated flapper door within the thermal cycling apparatus separates the two chambers. The material to be thermally tested is placed in a basket constructed of suitable material which can be translated between the two chambers from a location externally of the chambers. The temperature in the upper chamber is elevated by gaseous nitrogen to a temperature up to about 1000 degrees F. and the lower cold chamber is cooled by a cryogenic liquid. Cycle testing is preformed by alternately transferring the material, i.e. 40 or more specimens at a time, between the upper and lower chambers the number of times desired.

Abstract: An interior atmosphere control system contains a group of sensors to detect/measure indoor and outdoor air temperature, humidity, air pressure, oxygen content, carbon-dioxide content, static electric charge, indoor wall temperature, sound and light. These measured results, through a signal transfer interface, are sent to a microcomputer which also accepts a user's command as input data through a user's interface.

Abstract: A refrigerator includes a vegetable storage drawer. A gas-absorbing member is disposed over the drawer for absorbing noxious gas emitted by vegetables. The gas-absorbing member is formed of zeolite, and an ultraviolet lamp is provided for periodically illuminating the gas-absorbing member to regenerate the latter.

Abstract: An automatic ice making machine of the type which includes an ice making unit provided therein with an electric control apparatus for an ice making mechanism contained therein and combined with an ice storage bin to store therein an amount of ice cubes or chips formed by operation of the ice making mechanism under control of the electric control apparatus, wherein an ice detection element is previously contained within the ice making unit to be inserted into the interior of the ice storage bin after installation of the ice making unit on the ice storage bin for deactivating the electric control apparatus when detected the ice cubes fully stored in the ice storage bin, wherein a connector for connection to a source of electricity is connected to the electric control apparatus by means of conductive wires and arranged within the ice making unit to disconnect the electric control apparatus from the source of electricity when the ice detection element is remained in the ice making unit and to connect the electric

Abstract: The different compartments of the preserving vessel are sequentially supplied with a controlled atmosphere by means of a first permeator providing a controlled atmosphere with an oxygen content of about 2% for the step of loading the compartment, then by means of an another separator providing a controlled atmosphere with an oxygen content which does not exceed 1% for a phase of extended conservation. The separators are typically of the type with a membrane and are supplied through a group of common compression, and the oxygen contents of the gases which are provided are controlled by means of flow limiters located downstream.

Abstract: The invention relates to a method and apparatus for freezing a sample by solidifying a liquid contained in the sample and widen the distance within the sample where the same is amorphously solidified. For this purpose, the sample is cooled immediately after being irradiated with an electromagnetic wave. The apparatus includes an electromagnetic irradiating means for irradiatine an electromagnetic wave on a sample immediately before freezing thereof.

Abstract: A sterilizing/deodorizing apparatus for a refrigerator comprises an air intake section for introducing air thereinto, a sterilizing/deodorizing section including a discharge lamp to remove floating bacteria, odors, and the like contained in the air which passes through the intake section, a discharge section for discharging purified air. The apparatus is operated automatically by a temperature sensor or by an odor detector.

Abstract: A low-temperature storage case having; a food storage room inside a thermally good conductive inner box which is surrounded by a thermally insulating outer box, and a cold-air circulation space between the two boxes; and a refrigeration unit disposed in the cold-air circulation space. Ethylene adsorbing members are provided on at least a portion of the inner box with one surface of each ethylene adsorbing member is exposed to the storage room and other surfaces exposed to the cold-air circulation space so as to adsorb ethylene gas in the storage room. In order to re-activate the ethylene adsorptibity of the adsorbing members, ther are provided; ventilation holes in the outer box; a heater disposed in the cold-air circulation space; and a ventilation unit mounted on the outer box for ventilating the cold-air circulation space as required.

Abstract: A gas under pressue is sent to a first compartment of a separation module having permeation membrane, the first modified gas mixture which exits from the first compartment being introduced into the enclosure to constitute therein a controlled atmosphere which is removed and circulated in counter-current in the second compartment of the module towards the discharge orifice of the latter so as to substantially recombine the two gaseous modified mixtues before discharging same thereby increasing the performances of the separation module.

Abstract: The invention relates to a cooling process and to a refrigerated container into which nitrogen is delivered, which nitrogen is transported in liquid form in containers with the refrigerated container, at least one cooling system being provided in order to cool the atmosphere of the refrigerated container (1). According to the invention it is provided that the atmosphere is circulated via the cooling system (3) for periods of time given by a control means (13) by at least one blower (44), and that at least one means (6,7,7') for warming the nitrogen before supplying it into the cool room (40), of the refrigerated container (1) is provided, by means of which the nitrogen can be warmed to a temperature substantially corresponding to the temperature within the cool room (40), preferably being only slightly lower than this temperature.

Abstract: An oxygen generator accompanied with an air conditioner comprises a reservoir for collecting condensed water outside the evaporator, an electrolyzer for electrolizing the water from the reservoir to produce oxygen, and a controller for controlling the operation of the electrolyzer and providing suitable amount of oxygen into the room.

Abstract: A cryogenic storage system affords dense packing and easy access to individually identified storage packets of frozen fluid, such as blood, by storing the storage packets in an array of individually identified vertically movable racks, each containing a stack of individually identified storage packets, within a grid beneath the opening of a cryogenic tank. Preferably, the storage packets are substantially flat and the racks hold the storage packets in vertical edge-to-edge relationship.

Abstract: An organ preservation apparatus including an organ-receiving chamber, a pulsatile pump in continuous uninterrupted liquid communication with the organ-receiving chamber, and a fluid delivery tube interconnected between the organ-receiving chamber and the pulsatile pump for passing the organ preservation fluid from the organ-receiving chamber to the pulsatile pump. The pulsatile pump is configured to pass an organ preservation fluid to the organ-receiving chamber in a dichrotic pulse pattern. The organ-receiving chamber has an outer box with an insulated interior area, an organ-receiving cassette removably contained within the insulated interior area, and a lid detachably fastened to the outer box. The pulsatile pump includes a bladder pump, a motor, and a cam connected to the motor. The cam is connected to an actuator so as to compress the bladder pump is a dichrotic pulse pattern.

Abstract: Method for storing and maintaining produce under controlled conditions in a transport container (5) during transportation. Nitrogen-rich gas and carbon dioxide gas are supplied to the container when required by a compact and efficient system wherein the nitrogen gas is generated from the ambient air surrounding the container using an air splitter (35) and the carbon-dioxide is generated from a store of dry-ice (40).

Abstract: The refrigerator, in its internal cavity (2), comprises a compartment (4) in which at least a part manually movable and defining a second internal cavity (5) which is substantially water tight with respect to the first internal cavity (2) and communicating with a gas source containing less oxygen than air, typically consisting of a separation module (17) cyclically supplied with compressed air by means of a moto-compressor unit (19).Application to the long term domestic preservation of fruits and vegetables.

Abstract: Moisture is removed from the compressed feed air to a separator and collected in liquid form in a reservoir. The humidity in a controlled atmosphere container is monitored and moisture is taken from the reservoir and added to the container in order to provide an ideal environment for the preservation of foodstuffs.

Abstract: A method for storing a semiconductor substrate preserves the semiconductor substrate at a temperature not more than 10.degree. C. in a sealed manner. After the surface of the semiconductor substrate has been cleaned by etching or the like, the semiconductor substrate is put in a bag of a synthetic resin sheet. An inert gas is introduced into the bag or the bag is brought into a vacuum state, the bag is sealed, and then maintained at the above temperature, whereby the cleaned surface is not recontaminated for a prolonged period of time.

Abstract: The present invention includes a composition and method for culturing and freezing cells and tissues without serum or serum products in the culture medium by substituting hyaluronic acid for the serum or serum products. The composition and method are especially well-suited for culturing and freezing embryos, ova and sperm. The present invention reduces the risk of transmittal of microorganisms such as viruses.

Abstract: An indoor unit of an air-conditioning system is provided with a heat exchanger, a fan, and an air cleaner. The fan introduces the air in a room into the indoor unit, and blows the air back into the room after guiding the air to pass through both the heat exchanger and the air cleaner. The heat exchanger performs heat exchange with reference to the air circulated by the fan, for air-cooling, heating, or dehumidification. The air cleaner is arranged in front of the heat exchanger, with a predetermined gap maintained with reference to the heat exchanger. The air cleaner catches dust particles in the air and eliminates odorants from the air. The air cleaner is provided with engaging members. These engaging members are projected from the air cleaner and engage with the heat exchanger. Accordingly, the air cleaner is prevented from swinging, and the gap between the air cleaner and the heat exchanger is maintained at a constant value.

Abstract: Method of encapsulating a hyperbaric gas for the treatment of diseases in humans with encapsulated gaseous precursors, such as microbubbles of oxygen. The method includes the step of immersing a receptacle containing an encapsulating material into a reaction vessel. An ultrasonic probe is then inserted into the reaction vessel. When the vessel is sealed, a source of hyperbaric gas is communicated therewith, and the vessel is then immersed within a cooling fluid so that the hyperbaric gas condenses. Thermal energy is then applied to the receptacle and ultrasound energy is delivered to the ultrasonic probe. When the probe vibrates, hyperbaric gas is distributed within the heated encapsulating material. After the cooling fluid chills the mixture of hyperbaric gas in the encapsulating material, the hyperbaric gas is entrapped therewithin. The encapsulated oxygen precursor can be used to treat atherosclerosis, infections and neoplasms, as well as to provide systemic oxygenation of tissues.

Abstract: A filter in the inlet stream of a heating system or air-conditioning system of a motor vehicle for retaining noxious gaseous air components has the form of a tubular section which has air flowing through it transversely. The filter can be sealed at one end by a flap. For the purpose of rapidly implementable desorption with low expenditure, the filter be constructed from layered discs filled with activated carbon. The discs are separated from one another in each case by an intermediate layer consisting of material with good heat-conducting properties. The discs and the intermediate layers are clamped to each other by armatures penetrating the discs in the direction of the central longitudinal axis of the tubular section. The armatures, which have a heat-conducting connection to the intermediate layers, can be heated.

Abstract: A deodorizer device for use in a refrigerator has an absorbent capable of absorbing odor components from air, a layer of a photocatalyst deposited on the surface of the absorbent, and a light source for illuminating the photocatalyst layer to excite the same. Air containinig odor components is forced by a blower to flow through the absorbent.

Abstract: The invention relates to a method and an equipment for the preservation of vegetables, meat or other organic substances. The essential feature of the method proposed by the invention consists of placing the goods to be preserved into a hermetically sealed chamber (I, II), then varying the composition of the gases bound by the cell material of products. The essential feature of the equipment complying with the invention consists of placing the goods to be preserved into a hermetically sealed chamber (I, II), where the chamber (I, II) is connected with some means, advantageously with a gas pump, for varying the pressure within said chamber, or providing said chamber (I, II) with at least one hermetically sealed, movable wall for varying the volume of said chamber, further connecting the latter with a cooling circuit for providing the cooling of the chamber (I, II).

Abstract: Apparatus for storing produce under controlled conditions embodied in a transport container (5) for maintaining produce under controlled conditions during transportation. Nitrogen-rich gas and carbon dioxide gas are supplied to the container when required by a compact and efficient system wherein the nitrogen gas is generated from the ambient air surrounding the container using an air splitter (35) and the carbon-dioxide is generated from a store of dry-ice (40).

Abstract: A freshener device for air for use in a refrigerator or freezer compartment for replacing an unwanted odor with a food or fruit-like scent. A process therefor is also provided. The device includes a perforated front plate and a perforated rear plate and a peripheral plate enclosing a chamber containing a selected particle mixture of about a 5 percent food or fruit extract, about 47 percent carbon filter type particles and about 48 percent sodium carbonate particles. The rear plate has a support and attachment means for mounting the device on an inner surface of a refrigerator or freezer wall and spaced therefrom.

Abstract: A refrigeration unit, especially a refrigerator or the like, includes a useful space. At least one container at least partially occupies the useful space for storing perishables. A device lowers pressure prevailing in the at least one container by partial aspiration of a remaining air volume surrounding the perishables. A device fills the at least one container with a gas atmosphere for increasing the storage life of the stored perishables.

Abstract: A cryogenic method for strengthening an orthopedic implant prior to its use is disclosed. The cryogenic method for strengthening an orthopedic implant includes the steps of placing the orthopedic implant and/or the implant material in a treatment chamber which is kept at room temperature, applying the total number of temperature steps to the orthopedic implant, as a first variable, to bring the orthopedic impalant and/or the implant material in the treatment chamber to -320.degree. F. or below, applying the total number of temperature steps to the orthopedic implant, as a second variable, to bring the orthopedic implant and/or the implant material in the treatment chamber to +295.degree. F., or below, depending on material type, applying the total number of temperature steps to the orthopedic implant, as a third variable, to bring the orthopedic implant and/or the implant material in the treatment chamber to room temperature.

Abstract: A configuration for enhancing the performance of air pollution removal integrated air conditioning systems for airstreams having low level gaseous contaminants. The configuration includes a first filter comprising activated carbon for adsorbing gaseous contaminants, wherein adsorption is degraded by the presence of moisture, a means for increasing the moisture content of the airstream, and a second filter impregnated with chemical reagents for removal of gaseous contaminants, such gaseous contaminants reacting with the reagents to form noncontaminants, wherein the reaction is enhanced by the presence of moisture. The means for increasing the moisture content is positioned downstream of said first filter and upstream of said second filter. Also disclosed is a method for enhancing the performance of air pollution removal integrated air conditioning systems for airstreams having low level gaseous contaminants by utilizing the configuration of the present invention.

Abstract: A method of preserving harvested viable organs for transplant is provided. The method includes the steps of preparing a brine including a cruciferous oil and a glycol, cooling the brine, and subjecting the harvested viable organ to the cooled brine in order to chill the viable organ and maintain its viability.

Abstract: For the freezing of baked goods, one exposes the baked goods, at least during the freezing procedure, to an atmosphere of increased atmospheric humidity. For the carrying out of this process, there is preferably used a container for the freezing of baked goods, the inner chamber of which consists of 2 parts which are separated from one another by a water vapor-permeable wall, whereby in the one part are present the baked goods and in the other part an aqueous solution which contains an agent lowering the freezing point.

Abstract: A switch-controlled, ballasted, low-frequency, ultraviolet device mounted inline in an air-return system of an air-conditioning unit to resupply return air. The air-return system has an upstream filter and downstream cooling coil, drain pan and blower fan. The ultraviolet device is disposed inline between the filter and cooling coil, and in closest proximity to the cooling coil to maximize its effectiveness. Ultraviolet emissions, directed at the cooling coil and drain pan, destroy cooling-coil-and-drain-pan bacterial accumulations, growth of mold spores or slime, dust mites, airborne diseases, pollens and pollutants, and purify such return air.

Abstract: A method of transporting a quantity of a comestible which may be subject to degradation as a result of respiration during transportation, comprising the steps of: (a) sealing or substantially sealing said quantity of the respiring comestible within a container as hereinbefore described sufficiently to ensure that less oxygen of the ambient air can diffuse into the container than is required for full respiration by the respiring comestible, flushing the container with an oxygen low or oxygen free gas so as to provide a reduced oxygen level in the sealed or substantially sealed container, such flushing occurring before, during and/or after said sealing or substantial sealing, and (b) transporting the container with the respiring comestible therein while (i) monitoring the oxygen level within said container and automatically adjusting the oxygen level as necessary by a positive infusion of ambient air into the container in response to such monitoring towards an optimum or predetermined value or range of values a

Abstract: A method of fabricating frozen fine liver pieces for an artificial liver which comprises cutting a liver removed from a human being or an animal, from which blood is removed into fine pieces of square shape and freezing the liver pieces with helium gas. A freezing apparatus for an artificial liver which has gas phase pressurizing means for pressurizing liquid helium coupled to a chamber for storing the liquid helium, a helium gas conduit dipped in the liquid helium passed through the chamber to be closed and contained, in which the liver fine pieces are telescopically received and an exhaust conduit provided with a control valve coupled to the freezing chamber.

Abstract: A refrigerated container 2 has associated therewith a compressor 6 which receives filtered air and passes it to a small apparatus 12 for separating air by pressure swing adsorption or by different rates of permeation of gas through semi-permeable membranes. Resulting air depleted in oxygen and water vapor flows into the interior of the container 2 and displaces atmosphere from the container 2 through a vent tube 20. Reducing the oxygen and water vapor content of the atmosphere in the container 2 (which may be a refrigerator or freezer) helps to preserve food stored therein and reduces the deposition of water or ice.

Abstract: This invention relates to an apparatus and method for distillation drying of one or more biological samples. The drying apparatus includes a retaining assembly, a vacuum assembly, cooling means, monitoring means and control means for actively regulating the temperature and pressure conditions of biological tissue so that such tissue may be dried without substantial ultrastructural damage.

Abstract: A storing volume is formed within a box which also houses a temperature detector for detecting the temperature of the gas within the storing volume, a cooling mechanism for cooling the interior of the storing volume, a nitrogen-rich gas supplying device, for supplying nitrogen-rich gas into the storing volume, and a controller which functions in such a manner that it activates the cooling mechanism in response to signals from the temperature detector in order to control the temperature of the interior of the storing volume, and also activates the nitrogen-rich gas supplying device in response to the variation of the gas contents of the storing volume in order to control the gas contents of the storing volume.