EP2708161A1 - Comptoir réfrigéré à circulation d'air et procédé de fonctionnement d'un comptoir réfrigéré à circulation d'air - Google Patents

Comptoir réfrigéré à circulation d'air et procédé de fonctionnement d'un comptoir réfrigéré à circulation d'air Download PDF

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Publication number
EP2708161A1
EP2708161A1 EP13004429.0A EP13004429A EP2708161A1 EP 2708161 A1 EP2708161 A1 EP 2708161A1 EP 13004429 A EP13004429 A EP 13004429A EP 2708161 A1 EP2708161 A1 EP 2708161A1
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EP
European Patent Office
Prior art keywords
fan
goods
air
counter
recirculating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13004429.0A
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German (de)
English (en)
Inventor
Günther Hertel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aichinger GmbH
Original Assignee
Aichinger GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aichinger GmbH filed Critical Aichinger GmbH
Publication of EP2708161A1 publication Critical patent/EP2708161A1/fr
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation
    • A47F3/0456—Cases or cabinets of the counter type

Definitions

  • the invention relates to a circulating air cooling counter, in which an air flow circulates through a goods compartment and through a recirculating air duct and sweeps over a goods floor arranged in the goods floor, wherein in the recirculation duct a fan and in the circulation direction behind the fan, a cold point of a cooling unit is arranged.
  • the invention relates to a method for operating a recirculating air cooling counter, in which an air flow through a goods room and through a recirculating air duct and arranged in the recirculating air duct fan and circulating at a circulation point behind the fan cold spot circulates and sweeps over a shelf.
  • Such recirculating air cooling counters are well known in various forms in the prior art and in the public, wherein to be cooled goods presented on the bottom of the goods and is usually protected by a glass top.
  • the goods floor is usually arranged horizontally or slightly inclined to a customer side, the glass top is usually on a seller side, ie on a side facing away from the customer, open, so that the goods from the sales staff from the back on the Goods floor can be placed and removed again.
  • Recirculating refrigerated counters of this type are common in food retail, for example, confectionery, such as cakes and pieces of cake, or meat and sausage products. To offer cheese or fish.
  • a recirculating air cooling counter in which an air flow circulates through a goods compartment and through a recirculating air duct and sweeps over a goods floor arranged in the goods floor, wherein in the recirculation duct a fan and in the circulation direction behind the fan, a cold point of a cooling unit is arranged characterized in that the fan with respect to two arranged at an angle to each other and successive sections of the circulating air channel is arranged inclined, wherein the angle of inclination to both sections is less than 90 °.
  • a method for operating a recirculating air cooling counter in which an air flow through a cloth beam and through a recirculating air duct and arranged in the circulating air duct fan and circulating at a behind arranged in the circulation direction cold spot over circulates and sweeps over a shelf, characterized in that the fan accelerates the airflow with a direction that deviates in at least one component from both an initial direction and an end direction of a change in direction of the airflow in the recirculating air passage.
  • Both the aforementioned air-cooled counter and the aforementioned operating method require that an air flow following a change in direction is accelerated by the fan. This means that turbulences, which reduce the efficiency by the air can be driven against changes in the circulating air duct or can only reach the fan through a narrow access space, are minimized and the air flow is not subject to unnecessary flow losses. Accordingly, the recirculating air channel can be made narrower overall, whereby the efficiency also increases.
  • a corresponding improvement in efficiency follows in particular if the operating method is designed such that the direction in which the fan accelerates the air flow is arranged at an acute angle both to the initial direction and to the output direction.
  • the fan is arranged in a transition region between the two sections of the circulation channel.
  • it can be particularly effective in reversing the direction support, without the air flow is too much affected.
  • a recirculating air channel is defined by a thickness and a width which are perpendicular to each other and both perpendicular to the direction of circulation.
  • the width is aligned horizontally and is therefore to be understood in parallel to the width of the convection refrigerated display.
  • the recirculating air duct can be extended at least in the partial area almost over the entire width of the refrigerated display counter.
  • several smaller recirculating air ducts can be arranged parallel to each other.
  • the transitional region between the two sections of the recirculating air duct is defined as the area which extends in each case at the maximum over the thickness of the circulating air duct into the two sections in parallel to the direction of circulation.
  • the central region of the transition region, in which at least one of the conversions makes a change in direction in order to pass from one section to the other section, is referred to in the present context as the connecting region of the two sections.
  • a plurality of fans and / or a plurality of cooling points can be provided over the width of the recirculation air duct.
  • a particularly effective flow or flow around the cold spot and thus beyond maximized efficiency follows, when the cold spot is arranged in the rear in the direction of circulation portion of the two at an angle arranged portions.
  • the fan can then possibly from the transition region accelerate the air directly to the Katstelle, so that it comes as intimately as possible due to the turbulence caused by the fan with the air flow in contact.
  • the fan can be arranged in an extended and tapered in the direction of circulation region of the rear part in the circulation direction, so that it can be effective over a large area in relation to the total size of the air conditioning chilled counter. By the rejuvenation takes place an advantageous acceleration of the air flow.
  • the cross-section, as the strength and width, of the recirculation passage in the influx to the fan can be advantageously chosen smaller than in the outflow from the fan.
  • the space can be optimally used, since then the largest possible Abtromin for the fan is available, which this can work very effectively and thus the efficiency further increases.
  • a particularly compact arrangement follows when the rear portion of the two sections is aligned vertically and the other of the two sections horizontally. These orientations are understood to be perpendicular to the width of the circulating air channel.
  • a convection refrigerated counter in which a stream of air circulates through a cloth beam and through a recirculating air duct and a arranged in the goods compartment goods space arranged goods floor sweeps, wherein in the circulating air duct, a fan and in the circulation direction behind the fan a cold point of a cooling unit is arranged, characterized in that between the fan and the cold point an air guide body is arranged. This breaks up an outgoing air flow from the fan, so that this evenly distributed and highly turbulent reaches the cold junction, which ultimately increases the efficiency.
  • a break of the air flow is particularly effective when the air guide body has a directed to the fan surface component.
  • a surface component convex so with a curvature to the outside, be aligned with the fan, so that a very effective deflection of the air flow can be ensured without losses due to excessive rebounds.
  • a method for operating a convection refrigerated counter in which an air flow through a goods room and through a recirculating air duct and arranged in the circulating air duct fan and at a direction of circulation behind the Fan arranged cold spot circulates over and sweeps over a goods floor, characterized in that the air flow is expanded behind the fan before reaching the area of the cold spot. This requires, in particular, that the cold point can be flowed over a much larger area, which also increases the efficiency.
  • the expansion of the air flow takes place with a component perpendicular to the width of the circulating air channel, so that areas laterally of the fan swept by the air flow and therefore the cold spot over a maximum width can cool the air flow.
  • the cold point may be, for example, an evaporator of a cooling unit, wherein an associated compressor and other components of the cooling unit, such as a heat exchanger and the like, then below the circulating air duct, especially if this is designed as a subchannel and / or in a base, which carries the cloth tree, can be arranged.
  • an associated compressor and other components of the cooling unit such as a heat exchanger and the like
  • the goods tree is open on the personnel side, so that goods can readily be grasped by the staff or stored in the goods space without the risk that the goods will be compromised by customers.
  • Cumulatively or alternatively to the other features of the present invention can, in order to optimize the efficiency of such Um Kunststoffmaschinetheken and thus minimize energy consumption, a convection refrigerated counter, in which an air flow through a goods room and circulating through a recirculating air duct and a arranged in the goods compartment floor goods strokes, wherein in the circulating air duct a fan and in the circulation direction behind the fan, a cold point of a cooling unit is arranged, characterized in that above the fan and below the Kalstelle a drip protection is arranged.
  • a convection refrigerated counter in which an air flow through a goods room and circulating through a recirculating air duct and a arranged in the goods compartment floor goods strokes, wherein in the circulating air duct a fan and in the circulation direction behind the fan, a cold point of a cooling unit is arranged, characterized in that above the fan and below the Kalstelle a drip protection is arranged.
  • Such drops can, especially when they hit the center of the fan, reduce its performance, which can be avoided by such a drip protection, so that the efficiency increases accordingly. Also can be avoided in this way that drops are accelerated back up, which also lowers the efficiency, especially if the drops should thereby evaporate again.
  • Corresponding drip protection is effective if it has a directed to the cold spot surface component.
  • the air guide body or the drip protection is arranged perpendicular to the width of the circulating air channel, so that air distributed in the width around the air guide body or can paint around the drip protection.
  • This requires a special uniform distribution of the air, which is correspondingly advantageous when it comes to the cold spot.
  • the drip protection preferably has a concave configuration which facilitates accumulation of dripping water or condensate and its targeted removal.
  • the air guide or the drip protection is inclined, so that any condensate can be dissipated purposefully.
  • the air guide body or the drip protection can be designed flat, which on the one hand allows an extremely simple and cost-effective design and on the other hand easy handling of these modules. Due to the planar configuration, one and the same module can readily act both as an air guide body and as drip protection, in particular, a concave surface design in the direction of the cold junction and a convex surface design in the direction of the fan can readily be realized simultaneously.
  • the air guide body or the drip protection in the circulation direction does not completely cover the fan. In this way it is ensured that such body does not obstruct the air flow too much, which would ultimately be detrimental to the efficiency again.
  • a recirculating air cooling counter or an operating method for a recirculating air cooling counter can be characterized in that arranged on one edge of the product bottom, a first bearing point and the top side with respect to the first bearing offset by a bearing distance from the center of the commodity floor in the direction of the edge, a second bearing and that a support and an abutment are arranged on a counter body of the convection refrigerated counter, wherein the horizontal distance between the support and abutment smaller than the bearing distance and the vertical distance between support and abutment are selected to be smaller than the distance of the two bearings perpendicular to the goods floor.
  • the goods floor can be placed clamped in an inclined position, for example, for maintenance or cleaning work on the counter body, making such activities considerably easier.
  • the edge on which the corresponding bearing points are provided is a customer-side and / or a staff-side edge.
  • a glass cover which may be present, but also in the case of very wide recirculating air cooling counters, since corresponding maintenance or cleaning steps can then be carried out by the customer or the personnel.
  • both a customer-side and a personnel-side edge is provided with corresponding bearing points, and accordingly corresponding supports and abutments are preferably also arranged on the counter body for each of the edges. In such a configuration, the goods floor can be clamped in two different positions accordingly to the counter body.
  • the bottom of the goods is particularly compact when at least one of the bearings is seconded to a body which serves as a storage location for the goods floor for the purpose of merchandise presentation. Then need for such bearings for the purpose of goods presentation no separate bearings can be provided.
  • the goods space 3 is protected in its upper area by a transparent cover 5, which is closed towards a customer side 6 and by a personnel side 7 facing the customer side 6 lies, is accessible from.
  • a goods floor 8 is arranged, wherein the circulating air cooling counter 1 has on its counter body 9 several presentation pads 10, on which the goods floor 8 can be placed in different angles of attack for the presentation of goods.
  • the circulating air channel 4 can be divided into four essential sections, a substantially vertical section 11, which is provided on the customer side 6 and in which the circulating air flow 12 flows from the goods compartment 3, a substantially horizontally oriented portion 12, in which the air flow. 2 flows from the customer side 6 from the personnel side 7 under the goods floor 8, a vertical portion 13, which is provided in a counter area 14 and a horizontal portion 15 in the upper area the counter area 14, from which the air flow 2 enters the goods compartment 3 again.
  • the convection refrigerated counter 1 extends perpendicular to the plane in the horizontal direction, which defines the width of the convection refrigerated counter 1 by this extension.
  • the circulating air channel 4 extends over this width, the direction of which only by way of example by a double arrow 16 in FIG. 3 is indicated.
  • the thickness 17 of the recirculating air duct 2 varies considerably, as shown by way of example in FIG FIG. 1 shown.
  • a cold spot 18 is arranged in the vertical section 13 of the circulating air channel 4, which is impinged by a fan 19, which causes a directed to the cold spot 18 air flow and circulate the air flow 2 in this way.
  • the fan 19 is disposed in an extended region 20 of the vertical section 13 of the circulating air duct 4, which extends through a baffle 21, which extends in the horizontal portion 12 of the recirculating air duct 4 and this in its thickness 17 to a minimum thickness 22 reduced.
  • the smallest thickness 22 of the horizontal portion 12 is smaller than the largest thickness 23 of the vertical portion 13 and even smaller than the smallest thickness 24 of the vertical portion 13, which ultimately the fan 18 can work very effectively.
  • an air guide body 25 is arranged with a directed onto the fan 19 surface component 26, which is made of a sheet and thus formed flat, at the same time serves as drip protection 27 and having a surface component 28, which is directed to the cold spot 18.
  • the air guide body 25 is arranged obliquely and has with respect to the fan 19 a convex configuration which corresponds to a concave configuration with respect to the cold spot 18.
  • the air guide body 25 of this embodiment is bent and formed without kinks, but this is not absolutely necessary, as in FIG. 5 illustrated embodiment, which may alternatively be used.
  • the air flow 2 is deflected by the air guide 25, 29 or by the drippers 27, 30 in the width of the circulating air duct 16 and distributed as extremely effective on the entire cold spot 18.
  • the in the FIGS. 6 to 10 shown goods floor has a presentation storage point 32, which is provided on an edge 33 of the merchandise floor 31 and can be placed on the presentation pads 10 in a conventional manner so that goods can be presented in a suitable manner on the bottom of goods 31.
  • a bearing body 35 is arranged in the region of the edge 33, which has a first bearing 36.
  • a second bearing 37 is provided by the presentation bearing 32 or by the associated assembly therefor.
  • the bearing body 35 In a lowermost presentation position, the bearing body 35 rests against the baffle 21 and thus likewise serves for a storage of the goods floor 31 for presentation purposes.
  • the convection refrigerated counter 1 in its the goods compartment 3 and the circulating air duct 4 forming the counter body 38 a support 39, which is formed in this embodiment by the lower conversion of the horizontal portion 12 of the recirculating air duct 4, and an abutment 40, which in this embodiment by a lower edge of the baffle 21 is formed.
  • the support 39 upwardly and interacts with the first bearing 36, while the abutment 40 faces downward and the interaction with the second bearing 37, which at an upper side 41 of the merchandise floor 31 and the presentation storage 32, which down is directed, is arranged.
  • the first bearing 36 and the second bearing 37 are arranged offset with respect to the plane of the product floor 31 by a bearing distance 42, wherein the second bearing 37 is arranged from a center 43 of the bottom 31 further outward.
  • the support 39 and the abutment 40 are spaced horizontally by a distance 44 from each other.
  • the vertical distance H of the two bearings 39, 40 is in this case smaller than and the distance L between the two bearings 36, 37 perpendicular to the bottom of the goods 31 and the horizontal distance 44 between support and abutment is smaller than the bearing distance 42nd
  • the goods floor 31 can then, as in FIGS. 8 to 10 indicated, be clamped in the counter body 38. It is self-evident that such a configuration can also be provided on another edge, for example instead of or in addition to the personnel-side edge 33, also on the opposite edge facing the customer side 6.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP13004429.0A 2012-09-14 2013-09-11 Comptoir réfrigéré à circulation d'air et procédé de fonctionnement d'un comptoir réfrigéré à circulation d'air Withdrawn EP2708161A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012018153.1A DE102012018153B4 (de) 2012-09-14 2012-09-14 Umluftkühltheke und Verfahren zum Betrieb einer Umluftkühltheke

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EP2708161A1 true EP2708161A1 (fr) 2014-03-19

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EP13004429.0A Withdrawn EP2708161A1 (fr) 2012-09-14 2013-09-11 Comptoir réfrigéré à circulation d'air et procédé de fonctionnement d'un comptoir réfrigéré à circulation d'air

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EP (1) EP2708161A1 (fr)
DE (1) DE102012018153B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11553807B2 (en) 2018-03-26 2023-01-17 Hussmann Corporation Merchandiser with even distribution fan plenum

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013007922A1 (de) 2013-05-10 2014-11-13 Aichinger Gmbh Umluftkühltheke sowie Verfahren zum Betrieb einer Umluftkühltheke

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8632023U1 (de) * 1986-11-29 1987-03-05 TYLER Refrigeration GmbH, 6250 Limburg Bedienungstheke mit Umluft- bzw. stiller Kühlung
DE9316571U1 (de) * 1993-10-29 1994-01-05 Sümak Kältetechnik GmbH, 71229 Leonberg Kühltheke mit Luftaustrittskassette

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1864746U (de) * 1962-10-15 1963-01-03 Kurt Dunkel Mettkuehlung in umluft-kuehltheken.
DE1542624A1 (de) * 1965-05-19 1970-03-26 Basf Ag Verfahren zur kontinuierlichen,katalytischen Spaltung von gasfoermigen und/oder verdampfbaren Kohlenwasserstoffen
DE1946787C3 (de) 1969-09-16 1975-07-17 Graebner & Kretzschmar Ohg, 6201 Nordenstadt Kühltheke mit Umwälzung der Kühlluft
DE7711392U1 (de) 1977-04-12 1977-07-21 Ludwig Kiesel Ohg, 8500 Nuernberg Selbstbedienungs-tiefkuehlvitrine
DE3201819A1 (de) * 1982-01-21 1983-09-08 Allgemeine Kühlmöbelbau GmbH & Co KG, 8904 Friedberg Verkaufstheke
DE3313399A1 (de) * 1983-04-13 1984-10-18 Karl 8904 Friedberg Leuprecht Kuehltheke
DE9113819U1 (de) * 1991-11-06 1992-02-27 Aichinger GmbH & Co. Einrichtungsbau Aluminium-Fenster- und -Fassaden KG, 8500 Nürnberg Verkaufstheke, insbesondere Kühltheke
DE20012190U1 (de) * 2000-07-13 2001-01-11 Hakemann Hergen Kühltheke mit Luftumwälzung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8632023U1 (de) * 1986-11-29 1987-03-05 TYLER Refrigeration GmbH, 6250 Limburg Bedienungstheke mit Umluft- bzw. stiller Kühlung
DE9316571U1 (de) * 1993-10-29 1994-01-05 Sümak Kältetechnik GmbH, 71229 Leonberg Kühltheke mit Luftaustrittskassette

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11553807B2 (en) 2018-03-26 2023-01-17 Hussmann Corporation Merchandiser with even distribution fan plenum

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DE102012018153A1 (de) 2014-03-20
DE102012018153B4 (de) 2023-11-09

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