DE6607439U - REFRIGERATED FURNITURE - Google Patents

Description

PATENT ANWAtV.

HELMUf G

6 Frankfurt "tu Main 70 iwlwhlb 27" M " 7079

D 3o 276 / 17c Gbm November 27, 197o

Dual Jet Refrigeration Co. Gzb / Ha.

Refrigeration units

The ^1T euerung relates to refrigeration appliances with an unlocked by a multi-layered air curtain under preferably wise cooling of the innermost layer bridged ZugangQöffnung, at the one hand, the velocity distribution in the individual layers of air influencing air outlet nozzles I are provided. f

In refrigeration units of this type, it is disadvantageous that large cooling losses enter and that the cold air currents can annoy people staying there.

Also in the US patent Io. 2,862,369 is a cooled Schaustel- lung box _h known which is provided with access openings. |; which is exposed to the atmosphere and yet is able to keep the contents in a refrigerated state. The cooling loss of the enclosed space through the access opening is reduced in a highly effective way through the use of gaseous curtains, especially air,]:

which is continuously conveyed across the open side from one edge of the ^B opening to the opposite edge. The air curtain is created by adjacent air currents, with the innermost flow containing chilled, cold air and one or more outer flows having temperatures that

approach the ambient temperature. It turned out to be desirable to circulate the internal, cold air flow and Means for the circulation of the neighboring Sohutz currents ■ provide to receive the cold sra and the trapped To keep the room in a sufficiently cooled condition.

Other known embodiments also include internals with nozzles extending across the bottom edge of the access opening to move the air currents upwardly across the inlet openings that extend to the top of the access opening. In all of these known designs, the efficiency leaves something to be desired. The performance is mostly dependent on the cooling of the moving air currents * that flow through the access opening of the refrigerated cabinet. To a lesser extent, power is consumed during defrosting periods and to drive fans to circulate the currents. In cooling the flows of the cooling method U 1 Ittät bsi ?, is the heat absorption through access opening essential

Lich for the amount of power consumption.

The object of the innovation is not only to avoid these disadvantages, but also to allow through proper guidance of the air currents economical operation of refrigeration units and to provide a refrigerator in a simple manner, which is such that the power consumption is reduced and gleielsstohl a desired cooling level is maintained

Another aim is to provide a quay construction of the type described , which is equipped with special outlet nozzles

is from which the cooled streams emerge transversely to an inlet

gangsSffnung "move, said nozzles reduce turbulence which employ" wipe άκο. flows and the TJmgebungsluf t, this will increase the efficiency of the box.

660743Sii.3.7l

This complex task of the innovation is achieved in that separate, over in front of the outlet nozzles in the air stream Air streams extending over the entire cross-section of an air layer are arranged.

Further improvements can be achieved in that the '3teuelemente on a pulley of the air flow are located and that the -J expensive elements in the outer air flow as Guide piece running across the air outlet nozzles is formed are, and that the guide piece air ducts in a honeycomb arrangement comprehends.

Of particular advantage with the "abenkanäle is further in accordance with the innovation that the guide piece naherungnvveise has triangular cross section, extend between dsn long triangle sides and are arranged so that the \. ^R abenkanqle are inclined against the direction of the nozzle inside, and The long side facing the air stream is inclined inwards and the other long side is approximately horizontal, and that the side of the part facing the air stream is curved in a cross-section known per se.

"'fester" grants of the fire consist in there !; the iteuerelenenlie an oblique arrangement in the air flow form, the slits of which are obliquely inward against the direction of the nozzles and that the control elements as vo2i arranged outside inward with increasing mutual spacing Cross bars are formed.

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I According to the innovation, it has also proven to be very advantageous

I indicate when the guide piece in a "known manner" as a hole

I "sheet with holes from the outside to the inside growing cross-section

| / is formed and if from the cross bars or the perforated plate

j screens are arranged.

j exemplary embodiments are illustrated in the drawing

| j and are described below.

j It shows:

j Pig. 1 is a partially sectioned elevation of a 'cooling cabinet, ] which is characterized by the features of this innovation

i is

{Pig. 2 is an enlarged partial view in section showing a ■ the type of bar construction according to the invention

^ borrows,

\ Pig. 3 is an enlarged partial view in section showing a

I shows other possible Büseji construction

i Pig »4 is an enlarged partial view in section showing an " additional form of a nozzle construction ";

. Pig. 5 is an enlarged partial view in section showing an I = further possible I ^x orm of the barrel construction;

| ^? : Pig. β is an enlarged partial view in section showing a

represents another porm of the sweet construction,

Il 660743911.3.71

Pig. 7 is a plan view of teilvei ^ e T, uftdurchla ^i: -.mittel, dip Zn ¹ "enutsung in net · Aunführungr- ^ orffi acc I ⁵¹ 6 Ig suitable InO ^15, and?.

^s ig. '; ei ^ ie ^ eilan-sees one possible form of air pollution control for use in the embodiment
j ^ nfc '" ^v ig. ^A.

"As mentioned above, pich üie 7er ν * - -: se rung en
Serve hiring on embodiments, which tufted curtains
Do not use them separately in close proximity
"move. These improvements are particularly directed to refrigerated vessels, the type that have an access port in
oiner .. 'and \; n £ possess, being a connection with deir space
within the 3efä: it is possible. The aefa & e or boxes of this inflation are provided with a plurality of nozzles which are arranged closely adjacent across one edge of an access opening and corresponding inlet openings lie across the opposite edge of the access opening. The inner nozzles and inlet openings are provided for the access of a cooled stream across the access opening, \ vM.hrenr! the adjoining outer throat and mouth openings increasingly v: iJrf! ° r ^a air flow uwviilzen, Jer Minere, jeküiilte ■■ 'rrom is led iu ¹ "^ !: -iuiej? •• .ana], the one arranged in it \ ünlnchlangen cries, and an upper tiehi'pre of "in er? n, angren ^ er ^ er ·
can also be cooled3.

^ ei d »r practiceiiiO / ien iujführuri ^ di ^ er 'ou ^ rung" .'UiMQ found, there is a greater degree of efficiency with regard to the. cooler! below is achievable if there is a means for increasing the value of the nmw * n the air currents are provided in a certain way.

<1 * I.

In particular, it has been found that a reduction the turbulence is possible if you consider the circulation speed which controls air currents. Palis the parts. * v ^ lche touch the relatively calm ambient air, no ΐ Moving at a lower speed than that of other parts -ier flow, can reduce the turbulence. erein>: t be.

The specific embodiments of this innovation, which are used to achieve the desired results, expand nozzles which have a special construction. Preferably, honeycomb-like material is used in the construction of these nozzles as this material is available in a form suitable for the purposes of this invention. This material is characterized by a multitude of narrow passages that are aligned parallel to one another. The material is also available in a wide variety of shapes and sizes. It is clear, however, that '? Other embodiments that have the Lben properties such honigwabenShnliche materials for which P "nut7ung gpnriß the J ^T euerung are included.

The nozzles used in the boxes on which the innovation is based are built in such a way that they influence the speed of movement of the air tones emerging from them, which move animals through the box access opening. Innborsomlei ": ^1; nn <i the: n M5sr built so there" - öi.e Hu ^r older parts of the "trönung which fcovühren the ümgebungsluft or slower air flows over the T'ffnung with relati '' lower. Move speed to manage the desired decrease in turbulence.

The nozzle designs also enable the Speed of air currents in such a way that approximately the same speed of movement in the Intermediate layer can be reached by neighboring currents. This maturity of the puss constructions brings with it, that the air currents are to a high degree laminar, what turn to more uniform temperature conditions in the neighboring ones Currents leads. This condition has also been recognized as a means of increasing efficiency.

The accompanying drawing shows in Figure 1 a cooled box 1o, which nozzle elemento has the features

"" The box times this innovation expand. 1o includes a top wall 12, a bottom wall 14, a rear wall 16 and a front spar 18. The latter includes an opening 2o which Eiren access to the interior 22 of the cooled box made possible. An inner wall 24 determines the Size of the cooled room.

An intermediate wall 26 is built in, so that an inner passage 28 and an outer passage "o" the inner Passage 28 contains a cooler 32 and a fan 34 provides air movement over the cooler and through passage 28. A similar fan 36 is intended for the outer passage 3o.

■ There are egg openings in each of the passages 28 and 3o? 8 available. The currents 40 and 42, I ^ lche the access opening overflow, enter these inlet ports and are propelled through the passages to outlet nozzles 44 and 46. the Inlet ports 38 may be screened to prevent insects or other foreign matter from entering the passageways to avoid.

Show special forms of the nozzle structure according to the innovation Figures 2, 3, 4, 5, 6, 7 and 8. The one for the inside Nozzle assembly 46 provided through passage 28 contains a honeycomb-like ion Section having a plurality of aligned passages parallel to the walls which define the passage 28 outside the corner 48. In the door the nozzles 46 to carry out the set The special embodiment shown, the edges 50 of the nozzles begin at a point below the Wall 52, which defines the lower extent of the passage 28. Because of this arrangement, the airflow in the passage 28, preferably directed into the outer passages of the nozzle 46. It has been found that the inner parts of the Flow 42, which with the relatively calm air are in contact within the box, moving more slowly than the outer parts of this flow. This arrangement aims at the possibility of turbulence between this internal flow and the air inside the box to decrease.

In the embodiment shown in FIG. 2, the dune for the outer flow is formed by two sections b ^f * and 56. The upper portion 54 includes a generally triangular portion, the hypotenuse of which extends along a line between the edges 58 and 60 which represent the corners in the passage 3o. The base of the upper section 54 has a horizontal position, and therefore the passages in section 54 are at an acute angle to the side walls which define the passage 3o.

• ·

• · I

9 -

The lower section 56 contains a plurality of "passageways, which are directed parallel with respect to the side wall. It can be seen that air currents flowing through the section 54 step, preferably directed against the inner passages lsi section 56. i.! it this arrangement becomes a lower speed reached in those parts of the air which exit from the outer passages and accordingly a reduction in the turbulence with regard to the ambient air can be achieved.

In the embodiment according to FIG. 3 there are also two sections 62 and 64 provided to dip the nozzle for outside To form flow. Here, all passages in the honeycomb-like sections are arranged in parallel Es wjrd , -but less movement in the outer parts of the external flow reached because of the curved shape of the section 62. The emphasized curvature which this section in the inner Parts indicates that this section takes up a larger proportion of air in these inner parts. In With regard to the outer flow parts, this then leads to less movement, which in turn reduces the turbulence can be reached.

In the embodiment shown in FIG. 4, the outer Flow through a nozzle 66, which is essential is larger than the nozzle 46. The longer passages in the nozzle 66 result in a greater resistance for the person passing through there Air. As a result, the speed of the external stream becomes lower than the speed of the adjacent inner stream. Furthermore, the vsinklige

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Arrangement of the -upper iieite 68 of the nozzle 66 longer nozzle passages, which guide the outer parts of the flow 40, while the inner passages of the nozzle become progressively shorter. The outer parts of the air flow Ao are therefore subject to greater resistance, and accordingly these outer parts will have less tendency to turbulence.

The embodiment shown in Figure 5 uses a slotted one Element 7o, which is arranged in the passage 3o in front of the nozzle 72. It can be seen that each of the elements 74, which form the protection arrangement, at an angle aligned, forcing the air in the passageway inward of the box contents. Each of these elements 74 extends over the entire dimension of the box, with the channels located between the elements also extend across the box. Reinforcement means Jj can be at one or more intermediate points adjacent

Elements are provided to form a completely rigid structure to achieve.

The illustrated slotted arrangement causes the air in the passage 3o to be guided against the inner side of the honeycomb will. As a result, the speed of movement of the air in the outer part, which is exposed to the ambient air is reduced in size.

The arrangement shown in Figure 3 includes a combination of screen elements 76 and a means 78 which has openings 8o forms for the passage of the air to the nozzle 82. As in the previous cases, the arrangement to achieve the Air conditioning provided in passage 3o.

A plan view of the means 78 shown in Figure 6 "is ^in; |. Shown Figure 7 Y / ie, there is shown, a plurality of rods 84 are arranged spatially separated from each other, whereby the apertures 8o are formed It will be seen that the. Openings become progressively larger from the outer part of the means 78 to the inner part. This arrangement also has the effect of pushing a major part of the air towards the inner part

'* Side of the passage 3o to direct while a lesser one

Part of it moves in part of the external flow which is adjacent to the ambient air.

FIG. 8 illustrates a proposed modification 78 ', where openings 8o' which are becoming larger and larger are approximate functionally correspond to the openings 8o. It is Obviously, this arrangement acts on the air flow in basically the same way as described above became. The screen 76, for example a fly gas has been found to be a desirable addition because it has the Has the effect of separating the air so that it does not runs through the outlet nozzles in the form of jets. this leads to to a gentler increase in air speed across the board to a given wall, as it is in relation to FIG. 2 should be explained.

FIG. 2 illustrates the results using a KXirvenbiläes ^ soften with the nozzle design according to the innovation can achieve. In this diagram, the horizontal aelise corresponds to the width of the nozzles used in the embodiment be used. If you record the speed of a stream across this latitude as shown, you can

the desired feature of the flows emerging from the nozzles can be recognized. With reference to nozzle sections 54 and 56 of Figure 2, crosses "x" are used in the diagram to indicate the velocity of the flow across the nozzle width. It can be seen that a comparatively low air speed is achieved in the outer parts of the air, while a comparatively high air speed occurs in the inner parts. The circles drawn in the diagram together with the crosses represent the results. when the upper section 54 is removed, it can be seen that the outer parts of the flow are then actually moving at a higher speed than the inner ones, it is obvious that with this arrangement the possibility of turbulence would be increased, j

ί The right-hand section of the diagram represents the effect

! of the nozzles 46 to the speed of the cooled flows

j. It turns out that the lowest speed at

j the inside of the flow is reached, and therefore is

{ a decrease in turbulence in this “area can be achieved.

As for the outer nozzles, it should be understood that these

j are to be used in any situation where the currents, wel-

] before stepping through it, in contact with other air

] come with a much lower movement speed

keit .has or as in the room of the ambient air, practiccii none Has movement.

From the above description it will be apparent that embodiments have been described which serve to improve the properties moving air currents in a desirable manner

• t

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to influence. The embodiments described allow a relatively low exit air velocity at the outer edges of the outer Sohutz flow. At the same time, these embodiments enable a relatively high speed in the interface between the cooled flow un <? the protective current. It has been found that the use of arrangements of the type described significantly improves the operating efficiency of refrigerated systems. The arrangement permits the use of larger air curtains, which can increase the size of an access opening. One embodiment using these arrangements has less compressor run time, less frost build-up, and it also reduces airflow so that a person standing in front of an ice maker is not bothered by exposure to a stream of cold air. In view of the above advantages, it is apparent that similar steps in other port Auaführungsformen which _t use the renewal contemporary elements can be achieved.

Claims (1)

sayings: 1. Refrigerated cabinets with an unspoiled by a multilayer Air curtain with preferably cooling of the innermost layer bridged access opening on one side the speed distribution in the individual tufted layers influencing air outlet nozzles are provided, thereby characterized that in front of the outlet nozzles (44, 46, 56, 64, 72, 82) in the air stream separate, over d'en f zen cross section of an air slide extending air flow Control elements (54, 61, 72, 74, 78) are arranged. 2. Cooling cabinet according to claim 1, characterized in that the control elements are located at a deflecting part of the air flow are located. 3. Cooling cabinet according to claim 1 and 2, characterized in that the control elements are designed in the outer air flow as a guide piece (54, 62, 7o) extending transversely over the air outlet nozzles . 4. Cooling cabinet according to claims 1 to 3, characterized in that that the guide piece takes up air ducts in a honeycomb arrangement. 5. Cooling cabinet according to claim 1 to 4, characterized in that the guide piece (54) has an approximately triangular cross-section, the ^v tebenkanöle extending between the long triangle sides, and are arranged so that the Y'abenkanäle against the direction of the nozzles ( 44, 46) to-J-nnen-inclined aind, and the one facing the air flow 5 Ι - 15 - long side slanting inwards and the other long side r. ^ herweise horisor.t ^ l runs. "" hlrV- ^ rel nach te Spruch 1 Mo 4., öa-ur "!; marked, because" the side of the 'eitstücka (oL' ¹ facing the airflow) is curved in the well-known .'eise in: cross-section . Refrigerated cabinet according to Claims 1 "to 3, characterized in that the control elements (74) form a protective arrangement (7o) extending obliquely in the air flow * their bchlitae
are inclined obliquely inwards against the direction of the nozzles (72). ^g '8. Refrigerated cabinet according to claim 1 to 3, characterized in that the control elements are designed as from the outside to the inside with v / aehsen- crossbars (84) arranged at the mutual distance (8o) are trained. 9. Cooling cabinet according to claim 1 to 3, characterized in that the guide piece is formed in a manner known to 3ich as a perforated plate (78 ') with holes (8o ^f ) from the outside to the inside growing cross-section. 1o. Refrigerated cabinet according to claims 8 and 9, characterized in that in front of the cross bars (84) or the perforated plate (78 *)
Screens (76) are arranged.