FR2538514A1 - EVAPORATOR SYSTEM FOR FREEZING FURNITURE AND ESPECIALLY FOR HOUSEHOLD OR OTHER REFRIGERATED CABINETS - Google Patents

Abstract

Evaporator system for freezer cabinets and, in particular, for household refrigerated cabinets, or others, comprising several evaporator planes superimposed at a certain distance corresponding to the various freezer compartments and composed of coils aligned side by side, the turns of which are assembled in the form of panels by heat-conducting elements such as metal bars, conductive sheets and others, characterized in that one or more turns of the evaporator coil 20 assigned to the lowest panel 14, 14 'is extended on one side beyond of the limit of the table and returns to the center of the table passing under the latter, while its end in the form of a hairpin 21 is then curved downwards. (CF DRAWING IN BOPI)

Description

EVAPORATOR SYSTEM FOR FROZEN FURNITURE AND IN

  PARTICULAR FOR HOUSEHOLD OR OTHER REFRIGERATED CABINETS

  The invention relates to an evaporator system for

  freezers and in particular for refrigerated cabinets

  households or others, with several plans

  porters arranged one above the other and at a distance from each other, assigned to

  different compartments of the freezer cabinet,

  serpentines aligned side by side whose turns are connected by heat conducting elements such as metal bars, conductive sheets and

others, in the form of tables.

  Evaporative systems of this kind should be designed in the interest of operation that is as economical and as energy efficient as possible, and they must be equipped to maintain, wherever possible, the usable volume of the freezer at all times. the conservation of the product con

  This is particularly true for freezing

  high-end players who have to meet standards

  my strict from the point of view maintaining a temperature

of regular conservation.

  On conventional evaporator systems, we have

  therefore the practice of providing additional coils

  in the zones of the usable volume of the freezer where the temperature is higher by heat input or convection, than in the others.

  regions of usable volume These additional coils

  are intended to rapidly evacuate the heat

produced in these places.

  Extra coils needed for regular temperature distribution inside

  of the freezer nevertheless require, on the systems

  known porters, weld points or solder

  which increase the cost of production

  freezers equipped with these evaporator systems.

  In addition, points of solder or additional solder

  should be made with the utmost care as they may fail to seal and increase

warranty claims.

  The object of the present invention is to avoid additional welding spots on the evaluation systems.

  porters of the type described above, thanks to a confi-

  appropriate management of the coils, which both reduces the cost of production and increases

  the operational reliability of the refrigerated cabinets

  equipped with these evaporator systems.

  The problem is solved by the present invention in that one or more coils of the coil

  evaporator assigned to the lower table, are

  on one side beyond the limit of the table, then returned to the center below the table, while

  their hairpin-shaped ends are

gaped down.

  According to the design of the present invention, it is easy to secure additional heat exchanger elements in a place where the proximity

  of the compressor capsule installed at the bottom of the

  household refrigeration provokes an external contribution

  On the other hand, the present invention eliminates additional solder or solder points of the evaporator coil corresponding to the lower table so that the operational reliability of the household refrigerating cabinet

is greatly increased.

  An interesting improvement of the subject of this invention is obtained on a freezer cabinet

  whose casing has at its lower

  crooked projecting inside the fact that the shape given to the extended turns of one side beyond

  the limit of the lower table of the evapo-

  rator, marries the shape of the recess.

253851-4

  Given the particular conception of serpents

  evaporators, it is always possible to adapt

  the number and the length of the turns the power fri-

  in the lower part of the freezer cabinet and thus obtain an optimum configuration

  Evaporator male for each type of device.

  Other interesting features of this

  invention mentioned in the

  the following description of two examples

  Simplified form on the attached diagram of evaporator systems for freezers On these drawings: Figure-1 shows an evaporator system for

  freezer with several evaporator planes su-

  placed at a distance and assigned to the different

  chambers of the freezer, composed of serpents

  side-by-side aligned, whose turns are connected by metal bars in the form of tables, the sketch being three-dimensional, Figure 2 shows the lower table whose evaporator coil has several turns which are extended on one side beyond the rear limit and which are then brought back to the center below the table with, from there, their hairpin-shaped ends curved downwards, seen from the front,

  Figure 3 shows the lower table of the

  evaporator, seen from the side, with

  interrupted indicating the part of the housing of a household refrigerated cabinet next to this table,

  Figure 4 represents a second example of

  the lower table of an evaporator system with the evaporator coil curved downwards,

  distinguished from the previous one by a longer branch

  curved downwards, seen from side also,

  FIG. 5, a piece of tube used in the ser-

  evaporators with the metal bars

  dice or brazed above serving as conductive elements of heat and at the same time stabilization of the evaporator coil. An evaporator system for freezer cabinets designated 10 in FIG. 1 comprises several evaporator planes placed at a certain distance above

  from each other and corresponding to the different

  parts of the freezer cabinet, in the form of

  11, 12, 13 and 14, composed of the coils 15

  whose turns are assembled by elements

  ductors of heat, in the form of metal bars

  qẻs 16 to form sturdy and flat sets.

  Tables formed, preferably by a single line of continuous tube, are interconnected by the tubes of

  connection 17 and 18 At the top of the system

  evaporator 10, there is a manifold 19 connected

  on the connection tube under the upper table.

  Table 14 corresponding to the lower compartment

  of the freezer cabinet not shown, has a service

  Evaporator pentin 20 whose turns are extended one side beyond the rear boundary of Table 14 and are returned to the center of this table passing underneath while their pin-shaped ends.

  21 are bent downwards as indicated

  2, the ends in the form of hairpins can be bent differently so as to be able to fit as shown in FIG. 3, in the shape of the recess 22 arranged in the housing 23 of the freezer cabinet FIG. another form

  corresponding to the second example of

  The lower table 14 ', in which the coils of the evaporator coil extended beyond the rear boundary of this table, are curved with branches of different lengths. This embodiment of the lower table is mainly used when the lower compartment of the cabinet freezer is quite high or when the dimensions of the recess

are different.

  The evaporator system shown and described can be modified at will in the context of the present invention. Thus, for example, the lower ends in the form of hairpins 21 can

  be bent again to follow the bottom of the housing.

  By lengthening or shortening as appropriate

  different turns, the evaporation system can be adapted

  having the characteristics of the present invention

  vention, to the specific needs of the furniture freezer thus equipped On each table, one can obviously

  also provide for elements corresponding to the characteristics

  special features of the freezers and to distribute the temperature inside

  usable volume of the freezer.

  Independently of the examples shown and described above, it is naturally also possible that the hairpin ends 21, extended and bent on one side, beyond the limit of the table, are fully or particularly provided with soldered or soldered wire that is attached to the tube

  on one side or both sides, as needed.

  Evaporator systems designed in the form

  described and represented, constitute groups relating to

  robust, which can be mounted

  according to need and which can be stacked and trans-

  carried until they are installed in the refrigerator

pacity.

Claims (5)

  1 Evaporator system for freezer cabinets   and, in particular, for household refrigerated cabinets   res, or others, comprising several evaporator planes superimposed at a distance corresponding to different compartments of the freezer and composed of coils aligned side by side, whose turns are assembled in the form of tables by heat conducting elements such as metal bars, sheets conductive and other, characterized in that one or more turns of the evaporator coil (20) assigned to the lowest array (14, 14 ') is extended one side beyond the limit of the array and returns to the center of the painting passing under it, while its hairpin-shaped end (21) is then bent down.   2 Evaporator system for freezer cabinet according to claim 1, the housing comprises at its   lower part a recess protruding towards the   interior, characterized by the fact that the turns of the ser-   evaporator coil (20) extended one side beyond the lower table boundary (14, 14 ') has a shape   which marries the shape of the recess (22).   3 Evaporator system according to the claims   1 or 2, characterized in that the number and   length of the turns are adapted to the cooling   necessary in the lower part of the cabinet gelator.   4 Evaporator system according to the claims   1, 2 or 3, characterized in that the turns of the different boards (11, 12, 13, 14 and 14 ') form with   the corresponding connecting tubes, one set consistent tubular wire.