DE2501488A1 - Refrigerated foods displayed for sale on standard shelving - cooled by air currents issuing through perforated partition behind shelves - Google Patents

Abstract

Foods which have to be kept under refrigeration are to be displayed for sale in supermarkets on standard adjustable open shelving (7, 8), instead of in special cabinets, and kept cool by a flow of cold air coming partly through perforations in the wall behind the shelves and partly through air passages in section dividers which run across the shelves from back to front. The general flow of cold air is controlled at the air-cooler (16) or in the ceiling-level ducting (17). The pattern of its distribution according to the requirements of the various foods is set by the number, size and placing of the perforations and section dividers.

Description

Arrangement for cooling rooms through a cold wall with zones of different Temperature altitude.

Description The invention relates to an arrangement for maintaining of temperatures of different heights in a room without partitions.

It is known to be useful and economical Storage of so-called fresh goods in grocery stores or in the grocery departments The groceries required by department stores and markets is different at different To store temperatures or to offer them to the customer. The storage of fresh produce takes place today mostly in cold storage rooms, the exhibition is accessible to the customer, in refrigerated free choice shelves.

This method of handling fresh produce within a grocery store is expensive in terms of investment and labor.

The invention has set itself the task of avoiding these disadvantages. According to the invention, in a separate part of the shop, but from the customer walk-in room to maintain a temperature which is made for both the customer health reasons is still permissible as is medium-term cold storage of bulk fresh goods, such as shortening and margarine, on transport pallets packed, allows. A time-consuming repackaging of the above fresh product groups, delivery containers - Presentation of sales units on the free choice shelf, can be omitted.

All product groups that require storage at lower temperatures, for example + -OOC to + 20C, require, are according to the invention on a cold wall, in element construction created, within the room with reduced temperature either on shelves, Shelf-like, conventionally, or optionally placed on standard pallets and the Offered to customers for purchase.

The particular advantage of the invention is also the elimination of Cooled, additional free choice shelves with internal shelf temperatures below room temperature. The function of the conventional, refrigerated free choice shelving is carried out by the cold wall of the climatic room.

Through an empirically determined in its dimensioning and arrangement Hole nozzle system of the cold wall with the possibility of regulating the air volume is used in heat exchangers cooled supply air to the room via the goods stored directly in front of the cold wall pressed into the room so that the goods take about the temperature of the supply air.

By regulating the air volume, together with the formation of the Hole nozzles in the cold wall create the turbulence zone with the injection of the desired room air Goods loading depth can be adjusted.

The heat exchanger system is used to cool the circulated air with fans in special design with infinitely variable speed preselection the room air heated up by lighting, people, etc.

The quantities of air cooled in the heat exchangers are replaced by the Fans in an airtight, duct-like cavity up to the cold wall pressed. With the air outlet from the cold wall nozzle system is the room-internal air circulation circuit closed.

The innovation is shown for example: Through Figure 1 - as a side view of a room with turbulence zone and air circulation, through Figure 2 - as a view of the cold wall section A - A of Figure 1.

Through Figure 3 - as a detailed view of the load-bearing, vertical and horizontal modular element - grid system of the cold wall.

Through Figure 4 - as a detailed plan view of the grid system according to the figure 3 but folded down by 900.

Through Figure 5 - as a detailed arrangement of a nozzle block grid in the cold wall.

Through Figure 6 - as a detail, side view with air volume control flap designed as a scoop plate with holder for nozzle holder grid.

Through Figure 7 - .. as a detail, top view of Figure 6, however Folded to the right by 900 and without a scoop plate.

One of the grid system of the cold wall front elements (2) with associated Number of vertical square tube profiles (1), one-sided, adapted to the required length open and provided with elongated holes (6), forms the load-bearing, highly resilient frame the cold wall elements (2).

Brackets (3) and (4) attached to the tube profiles are used for fixing the profiles (1) on the floor and ceiling of the room (21).

The angle (4) is also a receiving element for the ceiling duct cavity with overlying insulating materials (22).

The horizontal grid spacing of the profiles (1) is determined by a Corresponding number of hat cross members (5) fixed.

In the oblong holes (6) punched into the profiles (L) on all sides laterally the hat plug-in traverses (5) or in the direction of the room consoles (7) for receiving the shelves (8) inserted.

The hat plug-in traverses (5) also serve as a clamp mount at the same time the cold wall front elements (G) to) with standard nozzle holes (9) and Z.-profiles (23). The air volume regulating flaps are designed as scoop plates (10) with Tongues (11) hinged in the Z profile (23).

For the assembly of the entire cold wall, with the exception of the floor and fixing the profiles (1) to the ceiling, no tools are required.

There are grid outlet nozzles on the individual cold wall front panels (2) (12) exquisitely fastened from thermoplastic material The respectively desired The opening angle of the scoop plate (10) is made possible by a flexible cam holder (14), locked into place in a bayonet hole (15) in the front panels (2). Will When the scoop plate (lo) moves in the direction of space (21), it first closes the standard nozzle holes (9) in the front panel (2). The cold air must have practically the same volume flow adjacent scoop plate (10) to the front plate (2) at increased speed flow through the air exhaust grid nozzle system (12). The throw of the blown out Cold air and thus the storage zone for fresh products to be stored at low temperatures is increased or

the storage depth increases; e.g. conventional shelf storage e packaged meat and sausage products on shelves (8).

Depending on the number of grid fields and thus the total length of the cold wall front elements (2) Depending on the length of the room (21), one or more heat exchanger registers are used (16) with a low overall height in front of the duct-like false ceiling plenum (17) mounted. The heat exchanger air outlet openings are connected via vibration-absorbing sleeves (18) on the false ceiling plenum (17) airtight.

The cladding of the heat exchanger register (16) is on the air inlet side (19) designed so that the fans mounted on the heat exchanger cladding (20) the amount of air heated in space (21) without energy-consuming turbulence can pick up.

All fans (20) of the heat exchanger systems (16) can through Speed change, switched individually or in groups, depending on what is required Air capacity and, depending on this, the cooling capacity of the cold wall front elements (2) to be customized.

Claims (8)

Arrangement for cooling rooms through a cold wall with zones different temperature levels. Protection claims 1 .; Arrangement for creation and maintenance of 2 temperature zones of different temperature levels in rooms without partition walls, characterized in that the amount of air required for cooling, volume flow and the exit speed can be variably pre-selected0 2nd arrangement according to 1 characterized in that the cold air through a cold wall with the opening size and opening shape empirically determined nozzle hole cross-sections and dimensions in the room enters 3. Arrangement according to 1 to 2, characterized in that by a Additional nozzle grid system, the distance between the turbulence zone, blown cold air - Room air, and thus the cold storage zone depth in front of the cold wall can be changed. 4. Arrangement according to 1 to 3, characterized in that the distribution the cold air into a room via a cold wall in a modular construction, mounted with Square tube profiles and plug-in traverses, any height and length without special tools to expand, takes place. 5. Arrangement according to 1 to 4, characterized in that one forcibly Cross-flushing of the room to be cooled takes place in that heat exchanger systems Equipped with fans that can be regulated with respect to speed and thus air volume will. 6. Arrangement according to 1 to 5, characterized in that the load-bearing, vertical square tube profiles also to accommodate brackets for shelves or without light strips underneath are suitable. The consoles can be used in one Distance of approx. 40 mm each can be hooked in height-adjustable as required. Also hanging bulk goods baskets and special shelves for for example, a hanging packaging presentation is possible. 7. Arrangement according to 1 to 6, characterized in that ventilator ventilated Heat exchanger systems each equipped with several fans in front of the outlet from the cold wall to the same level over the entire cold wall surface, however, through stepless Build up preselectable pressure by changing the fan speed. 8. Arrangement according to 1 to 7, characterized in that the room cooling Required air volumes from the heat exchanger systems via a duct-like, all-round insulated ceiling plenum can be led to the cold wall.