SU1345034A1 - Device for cooling articles - Google Patents

Abstract

The invention relates to the field of refrigeration processing equipment, namely, devices for cooling products with a developed bearing surface, and allows to increase the productivity of the device. The product (s) 9 enters the heat-insulated chamber 1 and, falling into the tray 2, floats under the influence of air jets emanating from the inclined holes 8 in the upper wall 6 of the lower duct (NC) 4. At the same time, AND 9 is blown from above by jets of air flowing out of inclined holes 7 in the bottom wall 5 of the upper box (VK) 3. Contact with | by the load-carrying elements 12 fixed on the surface of the endless elastic bands 10, And 9 moves SS / 1 (L with: (.Z

Description

along tray 2, subjected to thermal action from the cooling compressed air flowing out of the inclined holes 7 and 8 When moving endless elastic bands: (P) 11 along the grooves 13, the friction between them and the bottom of the grooves 13 decreases due to the outflow of compressed air, from the holes 14, reported to the cavity NK.

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The invention relates to refrigeration processing equipment, in particular, to devices for cooling products with a developed supporting surface.

The purpose of the invention is to improve the performance of the device,

Fig 1 schematically shows the proposed device, a general view, a longitudinal section; FIG. 2 is a section A-A in FIG. one; FIG. 3 is a section BB in FIG. 1; in fig. 4 - fragment of the device bed in a perspective view „

The device for cooling products includes a heat-insulated chamber 1 inside of which a tray 2, closed in cross section, is formed, which is formed by the upper 3 and additional lower 4 air distribution ducts, interconnected by vertical walls. Box 3 is located above the upper branch of the conveyor, box 4 - under it. In the bottom wall 5 of the upper duct 3 and in the upper wall 6 of the lower duct 4 there are inclined holes 7 and 8, respectively, with an angle of inclination on the side opposite to the cooling movement;

The traction bodies of the conveyor 10 include infinite elastic strips 11 with cargo devices 12 fixed on their surface. In the upper wall of the lower b: the duct 4 there are gutters 13 in which the traction bodies of the conveyor 10 are placed, and there are through holes 14, equally distant from each other along the length of the chute 13, at the entrance to the tray 2 mouth

The exhaust air flows out of the inlet of the tray 2 and is supplied by the suction fan 15 to the air cooler 16, from which the cooled air is blown by the fan 17 to the VC 3 and NK 4, from where it enters through the holes 7 and 8 to the tray 2. The cycle repeats 2 hp f-ly. 4 il.

An additional intake fan 15 is connected, connected to an air cooler 16 having an injection fan 17, the output of which is communicated via pipelines to the sides of both air distribution ducts 3 and 4.

The drive and tension drums 18 and 19 of the conveyor 10, respectively, have equidistant from each other annular guide grooves 20 whose horizontal symmetry axes are parallel to the longitudinal axis of symmetry of the grooves 13 and are in the same planes perpendicular to the plane of the upper wall 6 of the lower one box 4.

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The device works as follows.

The product 9 is supplied to the heat insulating chamber 1 and, falling into the tray 2, floats under the influence of air jets emanating from the inclined holes 8 in the upper wall 6 of the lower duct 4. At the same time the product 9 is blown from above by air jets emanating from the inclined holes 7 in the lower the wall 5 of the upper duct 3. In contact with the loading elements 12, p) placed on the surface of the endless elastic bands 11, the product 9 moves along the tray 2, while thermally acting from the side of the cooling compressed air flowing out of inclined holes 7 and 8. In this case, the upper surface of the endless elastic bands 11 is flush with the upper plane of the lower box 4. When the strips 11 move along the grooves 13

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The distance between them and the bottom of the grooves 13 is reduced due to the outflow of compressed air from the holes 14 communicated with the cavity of the lower box 4. The holes 14 are made at a right angle to the upper wall 6 of the lower box 4, which ensures maximum use of the air gap created. A stream of exhausted (deferred cold) air escapes from the inlet of tray 2 and is supplied by the suction fan 15 to the air separator 16. From the air cooler 16, the cooled air is blown by fan 17 to ducts 3 and 4, from where it enters through holes 7 and 8 to tray 2 The cycle is repeated.

The holes 8 in the upper wall 6 of the lower box 4 are designed to create an air gap that reduces friction between the transported product 9 and the upper plane of the wall 6, and to intensify the cooling process due to flow through the cooling air to the movement of the product 9. In this case, the intensification of heat exchange processes occurs due to the fact that the product is contacted directly with cooling water, the melt is in the air gap. This leads to a decrease in the thickness of the thermal boundary layer on the lower surface of the product 9, and, therefore, intensifies the heat exchange processes.

Increasing the productivity of the proposed device increases the yield of conditioned products, since contact of product 9 with loading elements 12 is minimized by intensification of heat exchange processes, by having holes 7 and 8 in the bottom wall 5 of the upper box 3 and in the top wall 6 of the lower box 4, which allows the heat treatment (cooling) of products 9 to be carried out evenly throughout their volume by means of a virtually non-contact thermal effect. In addition, the implementation of traction organs in the form of endless elastic bands 11 reduces the mass of traction organs;

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that is, the percentage of cold loss caused by the cooling of tagged organs that heated up outside the thermally insulated chamber 1 is reduced, and the friction between the endless elastic strips 11 and the surface of the grooves 13, in which they move, is reduced due to the effect of compressed air flowing out from the holes 14 in the bottom of the grooves 13, which makes it possible to reduce the drive power.

Claims (3)

1. A device for cooling products, including a heat-insulated chamber and an air separator located in it, fans, a conveyor for moving products and located in the upper branch of the latter in a distribution box with openings in its bottom wall, characterized in that provided with an additional air distribution duct placed under the upper branch of the conveyor and having openings in its upper wall, with both ducts interconnected vertical with the formation of a tray closed along the transverse perimeter, and the conveyor bodies include infinite elastic bands with cargo-carrying elements fixed on their surface, and in the upper wall of the lower duct there are chutes with through holes in the bottom box and air cooler communicated with cavities of both ducts through pipelines. 2. The device according to claim 1, characterized in that the holes in the bottom wall of the upper duct and in the upper wall of the lower box have an inclination in the direction opposite to the movement of products. 3. The device according to paragraphs. 1 and 2, due to the fact that it is equipped with an additional fan installed at the inlet of the products and a tray communicated with the air cooler.  Phage.4 Editor N. Shvydka Compiled by, Chanturi Tehred A, Kravchuk Proofreader M. Maksimishinets 4908/39 Circulation 475 Subscription VNIIPI USSR State Committee. for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4