RU2495340C2 - Thermal container for storage and transportation of biopreparations - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: thermal container for storage and transportation of biopreparations includes a housing with thermal insulation, a cover plate with a seal, and cold accumulators, and an internal container with thermal insulation and a cover plate with a seal. Cold accumulators are located with a gap in cavities between the walls of the housing and the inner chamber. Inner chamber has the possibility of alternating air exchange with the environment or the cavity between walls of the housing and the inner chamber through air ducts with built-in valves, which are connected to a temperature sensor, bellows or a bimetallic spring arranged in the inner chamber.

EFFECT: improvement of a thermal container.

3 dwg

Description

The invention relates to portable thermostats for transporting and storing biological substances, biological products that require maintaining thermal conditions within strictly specified limits.

Known thermal container (RF patent 2004 No. 2235254), containing a closed container with a bottom, front, rear and side walls, a lid, openings, a closed container is made in the form of a housing with a lid, one-piece of food two-layer polyethylene, between the inner and outer layers of the walls case and cover laid a layer of aluminum foil and a layer of expanded polystyrene [1].

Also known is a thermal container (1999 RF patent No. 2132522) containing two concentrically mounted glasses of vacuum-tight material, between which vacuum-powder thermal insulation is placed. The gap between the glasses is closed at the top with a spacer ring. The cover has a fitting for connecting a vacuum pump. A check valve [2] is installed in the fitting.

The closest analogue of the claimed invention is a technical solution according to patent document SU 1836062 A3, F25D 3/14, 08/23/1993, which describes a thermal container for storing and transporting biological products, containing a housing with thermal insulation, a lid with a seal, an inner chamber, in the cavities between the walls of the housing and the cold chamber [3] are located with an air gap in the inner chamber.

The disadvantage of these devices is to lower the temperature below that required during long-term storage or transportation due to the low heat capacity and mass of biological products.

The proposed device allows to obtain a new technical effect of maintaining in the thermal container the optimum temperature for storing the microorganism at a higher ambient temperature.

This effect is achieved by the fact that the inner chamber with thermal insulation has a lid and a seal, the inner chamber is made with the possibility of alternating air exchange with the environment or the cavity between the walls of the housing and the inner chamber through air ducts with integrated valves connected to the temperature sensor by a bellows or a bimetallic spring placed in inner chamber. The invention is illustrated in the drawing, where figure 1 shows a diagram of a thermal container, figure 2 and 3 are diagrams of levers.

The thermal container consists of a body 1 made of heat-insulating material with a cover 2, inside the body 1 there is a lockable cover 3 with seals, an inner chamber 4, in which a thermosensitive element is installed, made in the form of a bellows 5 filled with a substance that changes its pressure when the temperature changes, in the cavities between cold accumulators 6 are located with the walls of the housing 1 and the inner chamber 4 with an air gap. The bellows 5 by means of the two shoulders lever 7 is connected by a rod 8 with a valve 9 for supplying cold air. The atmospheric air supply valve 10 through the rod 11 is connected to the L-shaped lever 12, the opposite end of which abuts the rod 8. The atmospheric air is supplied through the air ducts 13 and 14. The coil springs 15 and 16 return the valves 9 and 10 to the closed position. In the inner chamber 4 is placed a container with biological products 17. To provide a dead zone in the rods 8 and 11, oblong grooves are made with the possibility of moving the fingers 18 and 19 of the fastening levers 7 and 12 in them.

Thermal container works as follows.

Cold accumulators 6, cooled in the freezer, are placed with an air gap in the cavities between the walls of the housing 1 and the inner chamber 4. A biological product 17 is located in the inner chamber 4. Due to the efforts of the springs 15 and 16, the valves 9 and 10 are in the closed position. The heat gain through the enclosing walls leads to a gradual increase in the temperature of the inner chamber 4, while the substance inside the bellows 5 changes the pressure, which leads to a change in the linear size of the bellows 5. The latter acts with its cam on the short arm of the lever 7, and its long arm through the rod 8, overcoming the resistance of the spring 15, opens the valve 9, the valve 10 does not change its position due to the groove made on the rod 11 (figure 2). Cold air passes through an open valve 9 and cools the inner chamber 4. The substance inside the bellows 5 changes the pressure and the latter takes its initial linear size. Due to the spring 15, the valve 9 is closed. With excessive cooling through the walls of the inner chamber 4, the bellows 5 changes its linear size, while through the levers 7 and 12, the rods 8 and 11, this leads to the opening of the valve 10, the valve 9 does not change its position due to the groove of the interference fit 8 (Fig. .3). This provides heat from the environment and after reaching the required temperature, the bellows 5 assumes the initial linear size and the valve 10 closes.

Thus, the proposed invention provides a technical result: maintaining the set temperature in the thermocontainer by functionally related to the temperature of opening and closing the valves, through which the cooled air from the zone where the cold accumulators are located or when it is lower, warmer air enters the inner chamber when the temperature rises above the set temperature from the environment.

Information sources:

[one]. RF patent No. 2235254 dated August 27, 2004. “A container for storing and transporting fish in a preserving medium”.

[2]. RF patent No. 2132522 dated 06/27/1999, "Device for storing biological objects."

[3] Copyright certificate SU 1836062 A3, F25D 3/14 of 08/23/1993, "Thermal container for the storage and transportation of biological products."

Claims (1)

Thermal container for storing and transporting biological products, containing a case with thermal insulation, a cover with a seal, an inner chamber, cold accumulators are located with air gap in the cavities between the walls of the case and the inner chamber, characterized in that the inner chamber with thermal insulation has a cover and a seal, the inner chamber is made with the possibility of alternating air exchange with the environment or the cavity between the walls of the housing and the inner chamber through air ducts with integrated valves connected to the dates ICOM bellows temperature or a bimetallic spring disposed within the interior chamber.

Images