DE8806978U1 - Outdoor temperature refrigerator - Google Patents

Description

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DESCRIPTION OF THE OUTDOOR TERRACE REFRIGERATOR

I. Saving electricity through natural cooling

The basic idea behind the outdoor temperature refrigerator is to save electricity. In climates with cold winters and cold nights in spring, autumn and summer, it actually seems absurd that today's standard household refrigerator is located in the middle of a heated apartment with a room temperature of around +20°C and constantly uses electrical energy to cool the food to &tgr;5 ~ +7 ⁰ C.

II. Outside temperature plus tiled stove principle

The design basis of the ATK cabinet (outside temperature refrigerator) is based on the principle of the earlier wooden and non-heat-insulated food refrigerator, which stood on the outside wall of the house in the kitchen and which usually had two ventilation openings of approx. 10/10 cm through the woodwork to the outside on the back. This uninsulated food refrigerator would no longer work in today's often overheated apartments. Nevertheless, the function of naturally cooling the food through the colder outside temperature is taken over by the ATK cabinet, but then additionally combined with the so-called tiled stove principle.

The design of the tiled stove (in contrast to an iron stove, for example) is based on the principle that the tiled stove is built from a material (bricks, fireclay, tiles) which stores the temperature once it has been absorbed, i.e. the heat, for hours or days and then releases it again very gradually. The function of the ATK cupboard is also based on this tiled stove principle, but in the opposite sense with regard to temperature (cold storage instead of heat storage). This means that a material is used for the walls of the ATK cupboard (concrete, bricks, clinker) which is particularly well suited to absorbing and storing the cold outside temperature (especially at night) in order to cool the food during the day.

In order to achieve this function not only in winter, but also in the long transition periods, the ATK cabinet has the following design features.

III. Mass, insulation and ventilation

1. The body (The four side walls: left, right, top, bottom)

The four side walls of the ATK cabinet are made of approximately 10 cm thick concrete and can be installed as a prefabricated concrete part when building a house, or later on in the outside wall of the house. On the inside, these four concrete walls are covered with white ceramic tiles. On the four outside sides, this concrete frame has approximately 5 cm thick heat and cold insulation (styrofoam on plasterboard or similar), which has a dual function. Firstly, it protects the inside of the hay from the cold outside temperature stored in the ATK cabinet and secondly, it insulates the refrigerator from the heat inside the house.

2. The interior door

The ATK-3 cabinet has two doors. One facing inwards and one facing outwards. The inner door corresponds in purpose, material and all construction features to the door of today's standard electrically cooled household refrigerators. It is light, well insulated and has a rubber seal. It also has compartments on the inside for storing food.

5. The outside door

The outside door is a folding door and sits flush with the outside of the house wall. The outside door is used for ventilation and cooling of the ATK cabinet. Its material (wood, plastic, light metal, etc.) must be weatherproof.

The outside door can be left slightly open at temperatures below + 5 C. However, it can also be fully open at night and closed during the day during the transitional periods (cold outside at night and warm during the day). For this purpose, the outside door also has approx. 5 cm of heat and cold insulation (styrofoam or similar) and a rubber seal, which protects the inside of the refrigerator from the warm outside air during the day. The outside door can be operated from the inside. Either manually with a pull rod or using a telescopic crank mechanism. With technically sophisticated (industrial) production, an inside

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and outside temperature sensor with mechanical automatic opening provided as additional equipment.

Directly behind the outside door, two grilles are required to protect the food. First, a sturdy galvanized steel grille with a mesh size of 2.5/2.5 cm to protect against theft and larger animals (cats, birds). And behind that, a particularly fine-meshed fly screen to protect against flies and small insects, which can be removed and cleaned from the inside.

IV. Variation options

1. The size

The ATK cabinet can be varied in size. However, it should not be smaller than approx. 40/60/100 cm, because otherwise there is not enough material mass to store the coolness of the night temperature.

2. Manual or automatic regulation

With the simple design of the ATK cabinet, the cooling and storage of cold is regulated manually. This means that, depending on the outside temperature, the outside door is opened or closed more or less by hand from the inside.

As already mentioned, automatic regulation is also possible with a temperature sensor and an electric telescopic opener (see ROTO roof window 410).

3· Additional electrical cooling

A combination of the ATK cabinet with additional electrical cooling is also sensible and feasible. This additional electrical cooling works like a normal household refrigerator and would always switch on in the warmer seasons when the internal temperature of the ATK cabinet rises above a certain minimum temperature. The ATK cabinet would then be fully functional in our climate zone not just for 7-9 months per year but all year round. Due to the given ability to store cold, cheaper night-time electricity could be used in this case.

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4* Precast concrete part'"plus modular system

The most efficient way to assemble the ATK cabinet is to move the heavy precast concrete body with the help of a crane during the shell construction of the house.

The external and internal doors as well as all other structural components described are only assembled or installed during the interior work. A modular system with appropriate design variants (technical and external) is provided for this purpose.

Since the body of the ATK cabinet is an integral part of the shell, it is theoretically of unlimited durability. This is also an advantage with the current bulky waste problem. The other components affected by material wear (doors, cooling unit, etc.) can be replaced using this modular system.

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Description of the attached drawn construction example·

The drawing shows the ATK cabinet in Schmitt and in the floor plan.

The ATK cabinet consists of a body made of reinforced concrete (precast concrete part) as a cold storage device 1; this is firmly embedded in the outside wall of the house 2. The body is covered on the inside of the house with heat-cold insulation 3; this is covered with normal interior plaster 4. The inside door 5 is similar to the door of a household refrigerator that is common today and can be swiveled. The outside door 6 is weatherproof and has a heat-cold insulation layer on the inside. When opened 7, cold outside air penetrates into the interior of the refrigerator 9. The outside door 6 is a folding door and can be operated from the inside using a mechanical opening device 10. Instead of manual operation 10, an automatic opening device can also be installed 11. This is controlled by combined inside and outside temperature sensors 12. Directly behind the outside door 6, a sturdy galvanized steel grille 13 is embedded in the concrete as protection against theft and larger animals. Behind this steel grille there is a frame 14 that can be removed from the inside with a particularly fine-meshed fly screen to protect against insects. The ATK cabinet can also be equipped (modular system) with an electric cooling unit 15; this is installed above the ATK cabinet.

Claims (3)

Protection claims for the outside temperature refrigeratorJ1 1. Outside temperature refrigerator, characterized in that its body consists of reinforced concrete as a cold storage unit and a thermal insulation, which can be installed as a prefabricated part in the outside wall of the house and is provided with an outside door 6 that can be operated manually from the inside for temperature adjustment. 2. Outside temperature refrigerator according to claim 1, characterized in that instead of the manual operating mechanism of the outside door 10, an electric opening device with inside and outside temperature sensors is installed, which automatically controls the opening and closing processes required for optimal cooling. 3. Outside temperature refrigerator according to claim 1 and 2, characterized in that in addition to the natural cooling by the existing cool outside air if necessary, further electrical cooling of the usual type is provided, which is connected to temperature sensors and an automatic switch